TUCSON ELECTRIC POWER CO
10-Q, 1997-05-14
ELECTRIC SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C.  20549

                                  FORM 10-Q
                                        
 (Mark One)
   [X]                   QUARTERLY REPORT PURSUANT TO
                            SECTION 13 OR 15(D) OF
                       THE SECURITIES EXCHANGE ACT OF 1934
                                        
                 For The Quarterly Period Ended March 31, 1997
                                        
                                       OR
                                        
   [ ]                   TRANSITION REPORT PURSUANT TO
                            SECTION 13 OR 15(D) OF
                       THE SECURITIES EXCHANGE ACT OF 1934
                                        
            For the transition period from __________ to __________.
                                        
                                        
                          Commission File Number 1-5924
                                        
                                        
                          TUCSON ELECTRIC POWER COMPANY
             (Exact Name of Registrant as Specified in its Charter)
                                        
                    ARIZONA                       86-0062700
        (State or Other Jurisdiction of         (IRS Employer
        Incorporation or Organization)       Identification No.)
                                                       
    220 WEST SIXTH STREET, TUCSON, ARIZONA       P.O. BOX 711
                     85701                          85702
   (Address of Principal Executive Offices)       (Zip Code)
                                        
                                 (520) 571-4000
              (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE)
                                        
                                        
                                        
     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.
Yes     X     No _____

     At May 8, 1997, 32,133,345 shares of the registrant's Common Stock,
no par value (the only class of Common Stock), were outstanding.


 

                               TABLE OF CONTENTS
                                                                       Page
                                                                       ----
Definitions                                                              ii
Independent Accountants' Report                                           1

                         PART I - FINANCIAL INFORMATION

Item 1.  --  Financial Statements
     Comparative Condensed Consolidated Statements of Income              2
     Comparative Condensed Consolidated Statements of Cash Flows          3
     Comparative Condensed Consolidated Balance Sheets                    4
     Notes to Condensed Consolidated Financial Statements
     Note 1.  Tax Assessments                                             5
     Note 2.  Income Taxes                                                6
     Note 3.  Long-Term Debt                                              6
     Note 4.  Valencia Merger                                             7
     Note 5.  Common Stock Reverse Split                                  7
     Note 6.  New Accounting Standard                                     7
     Note 7.  Reclassification                                            7

Item 2.  --  Management's Discussion and Analysis of Financial Condition and
Results of Operations
   Overview                                                               8
   Competition
     Wholesale                                                            9
     Retail                                                               9
   Holding Company Proposal                                              12
   Accounting for the Effects of Regulation                              12
   Dividends on Common Stock                                             13
   Earnings                                                              13
Results of Operations
   Results of Utility Operations
     Sales and Revenues                                                  14
     Operating Expenses                                                  14
     Other Income                                                        15
Liquidity and Capital Resources                                          15
   Cash Flows                                                            15
   Financing Developments                                                16
Safe Harbor for Forward-Looking Statements                               16

                          PART II - OTHER INFORMATION

Item 1. -- Legal Proceedings
     Tax Assessments                                                     18

Item 6.  --  Exhibits and Reports on Form 8-K                            18

Signature Page                                                           19

Exhibit Index                                                            20

                                  DEFINITIONS

The abbreviations and acronyms used in the 1997 First Quarter Form 10-Q are
defined below:
- -------------------------------------------------------------------------------
ACC...............   Arizona Corporation Commission.
ADOR..............   Arizona Department of Revenue.
Banks.............   Various banks with which the Company has credit
                       relationships.
Common Stock......   The Company's common stock, without par value.
Company or TEP....   Tucson Electric Power Company.
FAS 71............   Statement of Financial Accounting Standards #71:
                      Accounting for the Effects of Certain Types of
                      Regulation.
FAS 101...........   Statement of Financial Accounting Standards #101:
                      Regulated Enterprises - Accounting for the
                      Discontinuation of Application of FAS 71.
FAS 121...........   Statement of Financial Accounting Standards #121:
                      Accounting for the Impairment of Long-Lived Assets and
                      for Long-Lived Assets to be Disposed Of.
FERC..............   Federal Energy Regulatory Commission.
First Mortgage
  Bonds...........   First mortgage bonds issued under the General First
                      Mortgage.
General First
  Mortgage........   The Indenture, dated as of April 1, 1941, of Tucson
                      Gas, Electric Light and Power Company to The Chase
                      National Bank of the City of New York, as trustee, as
                      supplemented and amended.
IDBs..............   Industrial development revenue or pollution control bonds.
Irvington.........   Irvington Generating Station.
Irvington Lease...   The leveraged lease arrangement relating to Irvington
                      Unit 4.
ITC...............   Investment Tax Credit for income tax purposes.
kWh...............   Kilowatt-hour(s).
LOC...............   Letter of Credit.
MRA...............   Master restructuring agreement between the Company and the
                      Banks which includes the Renewable Term Loan, Revolving
                      Credit and certain replacement reimbursement agreements.
MSR...............   Modesto, Santa Clara and Redding Public Power Agency.
MW................   Megawatt(s).
1994 Rate Order...   ACC Rate Order concerning an increase in the Company's
                      retail base rates and certain regulatory write-offs,
                      issued January 11, 1994.
1996 Rate Order...   ACC Rate Order concerning an increase in
                      the Company's retail base rates and the recovery of
                      Springerville Unit 2 costs, issued March 29, 1996.
NOL...............   Net Operating Loss carryforward for income tax purposes.
Renewable Term
  Loan............   Credit facility that replaced the Term Loan pursuant to
                      the MRA Sixth Amendment, dated as of November 1, 1994,
                      and effective March 7, 1995.
Revolving Credit..   $50 million revolving credit facility entered into between
                      a syndicate of banks and the Company.
SEC...............   Securities and Exchange Commission.
Shareholders......   Holders of Common Stock.
Springerville.....   Springerville Generating Station.
Springerville Coal
  Handling Facilities
  Leases.........    Leveraged lease arrangements relating to the coal
                      handling facilities serving Springerville.
Springerville Common
  Facilities
  Leases..........   Leveraged lease arrangements relating to one-half interest
                      in certain facilities at Springerville used in common
                      with Springerville Unit 1 and Springerville Unit 2.
Springerville Unit 1
  Leases..........   Leveraged lease arrangements relating to
                      Springerville Unit 1, and one half interest in certain
                      facilities at Springerville used in common with
                      Springerville Unit 1 and Springerville Unit 2.
Valencia..........   Valencia Energy Company, previously a wholly-owned
                      subsidiary of the Company, merged into the Company on May
                      31, 1996.




INDEPENDENT ACCOUNTANTS' REVIEW REPORT

Tucson Electric Power Company and its Stockholders
220 West Sixth Street
Tucson, Arizona  85701

We have reviewed the accompanying condensed consolidated balance sheet of Tucson
Electric Power Company and subsidiaries (the Company) as of March 31, 1997 and
the related condensed consolidated statements of income and of cash flows for
the three-month periods ended March 31, 1997 and 1996.  These financial
statements are the responsibility of the Company's management.

We conducted our review in accordance with standards established by the American
Institute of Certified Public Accountants.  A review of interim financial
information consists principally of applying analytical procedures to financial
data and of making inquiries of persons responsible for financial and accounting
matters.  It is substantially less in scope than an audit conducted in
accordance with generally accepted auditing standards, the objective of which is
the expression of an opinion regarding the financial statements taken as a
whole.  Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should
be made to such condensed consolidated financial statements for them to be in
conformity with generally accepted accounting principles.

We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheet and statement of capitalization of the
Company as of December 31, 1996 and the related consolidated statements of
income, cash flows, and changes in stockholders' equity (deficit) for the year
then ended (not presented herein); and in our report dated January 27, 1997, we
expressed an unqualified opinion on those consolidated financial statements.  In
our opinion, the information set forth in the accompanying condensed
consolidated balance sheet as of December 31, 1996 is fairly stated, in all
material respects, in relation to the consolidated balance sheet from which it
has been derived.




DELOITTE & TOUCHE LLP
Tucson, Arizona
May 2, 1997



                        PART I - FINANCIAL INFORMATION

Item 1.  FINANCIAL STATEMENTS
- -----------------------------------------------------------------------------

     The March 31 condensed consolidated financial statements are unaudited
but reflect all normal recurring accruals and other adjustments which are, in
the opinion of management, necessary for a fair presentation of the results
for the interim periods covered.  Due to seasonal fluctuations in sales, the
quarterly results are not indicative of annual operating results.  Also see
Item 2. - Management's Discussion and Analysis of Financial Condition and
Results of Operations.


COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

                                                       Three Months Ended
                                                            March 31,
                                                         1997       1996
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $129,937    $125,210
 Amortization of MSR Option Gain Regulatory Liability    5,013       5,013
 Sales for Resale                                       19,331      17,805
                                                      ---------   ---------
    Total Operating Revenues                           154,281     148,028
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                               45,646      45,824
 Capital Lease Expense                                  26,276      25,805
 Amortization of Springerville Unit 1 Allowance         (7,009)     (7,273)
 Other Operations                                       26,296      24,088
 Maintenance and Repairs                                10,231       9,534
 Depreciation and Amortization                          21,774      23,753
 Taxes Other Than Income Taxes                          12,625      15,051
 Income Taxes                                           (2,348)     (5,872)
                                                      ---------   ---------
    Total Operating Expenses                           133,491     130,910
                                                      ---------   ---------
      Operating Income                                  20,790      17,118
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                           14,558       7,357
 Interest Income                                         1,756       1,473
 Other Deductions                                       (1,010)       (562)
                                                      ---------   ---------
    Total Other Income (Deductions)                     15,304       8,268
                                                      ---------   ---------

Interest Expense
 Long-Term Debt - Net                                   14,117      14,644
 Interest Imputed on Losses Recorded at Present Value    8,279       8,363
 Other                                                   2,641       2,328
 Allowance for Borrowed Funds Used During Construction    (435)       (368)
                                                      ---------   ---------
    Total Interest Expense                              24,602      24,967
                                                      ---------   ---------

Net Income                                            $ 11,492    $    419
                                                      =========   =========


Average Shares of Common Stock Outstanding (000)        32,135      32,134
                                                      =========   =========

Net Income per Average Share                          $   0.36    $   0.01
                                                      =========   =========


See Notes to Condensed Consolidated Financial Statements.


COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                       Three Months Ended
                                                            March 31,
                                                         1997       1996
                                                     -Thousands of Dollars-
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers                 $142,918    $140,519
  Cash Receipts from Sales for Resale                   22,402      17,037
  Fuel and Purchased Power Costs Paid                  (39,847)    (39,985)
  Wages Paid, Net of Amounts Capitalized               (20,259)    (24,824)
  Payment of Other Operations and Maintenance Costs    (18,876)    (20,806)
  Capital Lease Interest Paid                          (37,512)    (37,838)
  Interest Paid, Net of Amounts Capitalized            (13,400)    (13,739)
  Taxes Paid, Net of Amounts Capitalized               (11,121)    (12,013)
  Emission Allowance Inventory Sale                          -       4,120
  Interest Received                                      2,262       1,890
  Other                                                    410         884
                                                      ---------   ---------
    Net Cash Flows - Operating Activities               26,977      15,245
                                                      ---------   ---------

Cash Flows from Investing Activities
  Construction Expenditures                            (15,602)    (17,835)
  Investments in Joint Ventures                         (1,338)          -
  Other                                                    988         311
                                                      ---------   ---------
    Net Cash Flows - Investing Activities              (15,952)    (17,524)
                                                      ---------   ---------

Cash Flows from Financing Activities
  Payments to Retire Long-Term Debt                          -     (10,000)
  Payments on Renewable Term Loan                      (31,000)          -
  Payments to Retire Capital Lease Obligations          (4,061)     (4,150)
  Other                                                    383         288
                                                      ---------   ---------
    Net Cash Flows - Financing Activities              (34,678)    (13,862)
                                                      ---------   ---------

Net Decrease in Cash and Cash Equivalents              (23,653)    (16,141)
Cash and Cash Equivalents, Beginning of Year           130,291      85,094
                                                      ---------   ---------
Cash and Cash Equivalents, End of Period              $106,638    $ 68,953
                                                      =========   =========


SUPPLEMENTAL CONDENSED CONSOLIDATED CASH FLOW INFORMATION

                                                       Three Months Ended
                                                            March 31,
                                                         1997       1996
                                                     -Thousands of Dollars-

Net Income                                            $ 11,492    $    419
Adjustments to Reconcile Net Income
 to Net Cash Flows
  Depreciation and Amortization Expense                 21,774      23,753
  Deferred Income Taxes and
   Investment Tax Credits - Net                        (16,907)    (13,229)
  Lease Payments Deferred                               (8,306)     (9,308)
  Regulatory Amortizations, Net of Interest Imputed
   on Losses Recorded at Present Value                  (3,743)     (3,923)
  Other                                                 (1,954)       (353)
  Changes in Assets and Liabilities which
   Provided (Used) Cash Exclusive of
   Changes Shown Separately
    Accounts Receivable                                  7,534       6,929
    Materials and Fuel                                     153       1,290
    Accounts Payable                                     2,369      (1,656)
    Taxes Accrued                                       11,826      14,173
    Other Current Assets and Liabilities                  (436)     (7,456)
    Other Deferred Assets and Liabilities                3,175       4,606
                                                      ---------   ---------
Net Cash Flows - Operating Activities                 $ 26,977    $ 15,245
                                                      =========   =========


See Notes to Condensed Consolidated Financial Statements.


COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS

ASSETS
                                                     March 31, December 31,
                                                       1997        1996
                                                   - Thousands of Dollars -
Utility Plant
  Plant in Service                                  $2,135,620  $2,129,205
  Utility Plant Under Capital Leases                   893,064     893,064
  Construction Work in Progress                         81,705      74,210
                                                    ----------- -----------
    Total Utility Plant                              3,110,389   3,096,479
  Less Accumulated Depreciation and Amortization      (938,132)   (922,947)
  Less Accumulated Amortization of Capital Leases      (60,524)    (56,240)
  Less Springerville Unit 1 Allowance                 (164,479)   (163,388)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,947,254   1,953,904
                                                    ----------- -----------

Investments and Other Property                          70,443      69,289
                                                    ----------- -----------

Current Assets
  Cash and Cash Equivalents                            106,638     130,291
  Accounts Receivable                                   58,371      65,905
  Materials and Fuel                                    30,203      30,356
  Deferred Income Taxes - Current                        4,842      10,223
  Other                                                 13,766      14,026
                                                    ----------- -----------
    Total Current Assets                               213,820     250,801
                                                    ----------- -----------

Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        174,955     173,731
  Deferred Common Facility Costs                        60,127      60,762
  Deferred Springerville Unit 2 Costs                   18,558      21,260
  Deferred Lease Expense                                14,081      15,067
  Other Deferred Regulatory Assets                       7,806       8,004
Deferred Debits - Other                                 15,813      15,723
                                                    ----------- -----------
    Total Deferred Debits                              291,340     294,547
                                                    ----------- -----------
Total Assets                                        $2,522,857  $2,568,541
                                                    =========== ===========

CAPITALIZATION AND OTHER LIABILITIES
                                                     March 31, December 31,
                                                       1997        1996
                                                   - Thousands of Dollars -
Capitalization
  Common Stock                                      $  645,265  $  645,243
  Capital Stock Expense                                 (6,357)     (6,357)
  Accumulated Deficit                                 (494,106)   (505,598)
                                                    ----------- -----------
  Common Stock Equity                                  144,802     133,288
  Capital Lease Obligations                            892,570     895,867
  Long-Term Debt                                     1,192,025   1,223,025
                                                    ----------- -----------
    Total Capitalization                             2,229,397   2,252,180
                                                    ----------- -----------

Current Liabilities
  Short-Term Debt                                        3,567       3,567
  Current Obligations Under Capital Leases              15,833      10,383
  Current Maturities of Long-Term Debt                   1,635       1,635
  Accounts Payable                                      32,241      28,806
  Interest Accrued                                      41,314      57,404
  Taxes Accrued                                         35,833      24,007
  Other                                                 11,855      15,614
                                                    ----------- -----------
    Total Current Liabilities                          142,278     141,416
                                                    ----------- -----------

Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    76,335      96,422
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 14,212      15,188
  MSR Option Gain Regulatory Liability                   3,017       7,853
  Other Regulatory Liabilities                          17,585      17,596
  Other                                                 40,033      37,886
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       151,182     174,945
                                                    ----------- -----------
Total Capitalization and Other Liabilities          $2,522,857  $2,568,541
                                                    =========== ===========


See Notes to Condensed Consolidated Financial Statements.


NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
- -----------------------------------------------------------------------------

NOTE 1.  TAX ASSESSMENTS
- ------------------------

  RULING ON ARIZONA SALES TAX ASSESSMENTS - COAL SALES

     The Arizona Department of Revenue (ADOR) issued transaction privilege
(sales) tax assessments to the Company alleging that Valencia was liable for
sales tax on gross income received from coal sales, transportation and coal-
handling services to the Company for the period November 1985 through May
1993.  The Company protested these assessments.  On March 11, 1994, the
Arizona Tax Court issued a Minute Entry granting Summary Judgment to the ADOR
and upholding the validity of the assessment issued for the period November
1985 through March 1990.  The Company appealed this decision to the Court of
Appeals.  On September 12, 1996, the Arizona Court of Appeals upheld the
validity of the assessment issued for the period November 1985 through March
1990.  The Company filed with the Court of Appeals a motion for
reconsideration of their September 12, 1996 decision which was denied.  On
December 10, 1996, the Company filed with the Court of Appeals a Petition for
Review by the Arizona Supreme Court of the September 12, 1996 decision.
Additionally, the Company is protesting the assessments for the period April
1990 through May 1993.

     Previously, the Company had recorded an expense through the Consolidated
Statements of Income (Loss) in current and prior years and related liability
for the amount of sales taxes and interest thereon which the Company then
believed was probable of incurrence.  As a result of the Court of Appeals
decision, the Company recorded an additional expense of approximately $9.2
million in September 1996.  The amounts recorded by the Company included
estimates for the period June 1993 through May 1996, the period for which the
Company has not yet been assessed.

     On May 31, 1996, Valencia was merged into the Company.  Effective with
the merger, Valencia no longer supplies coal to the Company.  Instead the
Company acquires coal directly from the supplier.  As a result, the Company
believes it is not liable for transaction privilege tax computed on a basis
similar to the assessments described above subsequent to May 31, 1996.  For
periods subsequent to May 31, 1996 the Company continues to record an
estimated interest expense on the above assessments.

     Generally, Arizona law requires payment of an assessment due prior to
pursuing the appellate process.  The Company has previously paid, under
protest, a total of $23 million of the disputed sales tax assessments,
subject to refund in the event the Company would prevail.

  ARIZONA SALES TAX ASSESSMENTS - LEASES

     The ADOR has issued transaction privilege (sales) tax assessments to the
lessors from whom the Company leases certain property.  The assessments
allege sales tax liability on a component of rents paid by the Company on the
Springerville Unit 1 Leases, Springerville Common Facilities Leases,
Irvington Lease and Springerville Coal Handling Facilities Leases.
Assessments cover the period August 1, 1988 to September 30, 1993.  Under the
terms of the lease agreements, if the ADOR prevails the Company must
reimburse the lessors for taxes paid by them pursuant to indemnification
provisions.

     In the opinion of management, the Company has recorded, through the
Consolidated Statements of Income (Loss) in current and prior years, a
liability for the amount of state taxes and interest thereon for which the
Company feels incurrence is probable as of March 31, 1997.  In the event that
the assessments by the ADOR are sustained, an additional liability would
result.  Although it is reasonably possible that the ultimate resolution of
such matter could result in an additional sales tax expense of up to
approximately $20 million in excess of amounts recorded, management and
outside tax counsel believe that the Company has meritorious defenses to
mitigate or eliminate the assessed amounts.

     Based on the current status of the legal proceedings, the Company
believes that the ultimate resolution of such dispute will occur over a
period of two to four years. Based on consultations with counsel and
considering the amounts already accrued, the Company believes that the
resolution of this tax matter should not have a material adverse effect on
the Company's Consolidated Financial Statements.

NOTE 2.  INCOME TAXES
- ---------------------

     The benefit for income taxes included in the Comparative Condensed
Consolidated Statements of Income consists of the following:

                                               Three Months Ended
                                                    March 31,
                                                 1997       1996
                                              ---------- ----------
                                            - Thousands of Dollars -
Operating Expenses:
 Deferred Tax Benefit
   Federal                                    $   1,859  $   4,657
   State                                            479      1,201
                                              ---------- ----------
    Total                                         2,338      5,858
 Investment Tax Credit Amortization                  10         14
                                              ---------- ----------
Total Benefit Included in
 Operating Expenses                               2,348      5,872
                                              ---------- ----------
Other Income (Deductions):
 Deferred Tax (Expense) Benefit
   Federal                                         (577)     1,030
   State                                           (149)       265
                                              ---------- ----------
    Total                                          (726)     1,295
 Reduction in Valuation Allowance                14,318      4,849
 Investment Tax Credit Amortization                 966      1,213
                                              ---------- ----------
Total Benefit Included in
 Other Income (Deductions)                       14,558      7,357
                                              ---------- ----------
    Total Benefit for Federal and State
     Income Taxes                             $  16,906  $  13,229
                                              ========== ==========

     The differences between income tax benefit and the amount obtained by
multiplying income before income taxes by the U.S. statutory federal income
tax rate are as follows:

                                               Three Months Ended
                                                    March 31,
                                                 1997       1996
                                              ---------- ----------
                                            - Thousands of Dollars -
Federal Income Tax Benefit at
 Statutory Rate                               $   1,895  $   4,484
  State Income Tax Benefit, Net of
   Federal Deduction                                291        690
  Investment Tax Credit Amortization                976      1,227
  Reduction in Valuation Allowance               14,318      4,849
  Use of Capital Loss Carryforwards                   -      1,663
  Other                                            (574)       316
                                              ---------- ----------
     Total Benefit for Federal and
      State Income Taxes                      $  16,906  $  13,229
                                              ========== ==========

NOTE 3.  LONG-TERM DEBT
- -----------------------

     In February 1997, the Company repaid the outstanding Renewable Term Loan
balance of $31 million thereby reducing its Long-Term Debt.  At April 30,
1997, the Company had $140 million available for borrowing under the
Renewable Term Loan.

     In April 1997, the City of Farmington, New Mexico issued $80.4 million
of Pollution Control Revenue Bonds for the benefit of the Company.  The
proceeds will be used in June 1997 to redeem $47.9 million principal amount
of previously issued 6.25% bonds that mature in 2003 and $32.5 million
principal amount of previously issued 6.10% bonds that mature in 2007.   The
new bonds, which are unsecured, bear interest at 6.95% and mature in 2020.

     In April 1997, the Coconino County, Arizona Pollution Control
Corporation issued $36.7 million of Pollution Control Revenue Bonds for the
benefit of the Company.  The net proceeds loaned to the Company will be used
to fund $20 million of construction costs of additional pollution abatement
facilities at Navajo Generating Station and to redeem, in June 1997,  $16.7
million principal amount of previously issued variable rate bonds that mature
in 2031.  The new bonds, which are unsecured, bear interest at 7.125% and
mature in 2032.

     In April 1997, the Coconino County, Arizona Pollution Control
Corporation issued $14.7 million of Pollution Control Revenue Bonds for the
benefit of the Company.  The net proceeds loaned to the Company will be used
in June 1997 to redeem $14.7 million principal amount of previously issued
variable rate bonds that mature in 2031.  The new bonds, which are unsecured,
bear interest at 7.00% and mature in 2032.

NOTE 4.  VALENCIA MERGER
- ------------------------

     On May 31, 1996, Valencia Energy Company, a wholly-owned subsidiary of
the Company, was merged into the Company.  Effective with the merger, the
Company assumed all of the assets and liabilities of Valencia; the
responsibilities for the coal procurement, coal transportation and coal
handling services at Springerville Generating Station; and the
responsibilities as the lessee of the Springerville Coal Handling Facilities
Leases.  Certain amounts previously included in Fuel and Purchased Power have
been reclassified to Capital Lease Expense, Other Operations, Maintenance and
Repairs, Depreciation and Amortization and Taxes Other Than Income Taxes on
the Company's Condensed Consolidated Statements of Income to conform to the
current year's presentation.

NOTE 5.  COMMON STOCK REVERSE SPLIT
- -----------------------------------

     In May 1996, Shareholders approved a one-for-five reverse split of the
Company's common stock.  All references in the financial statements to
average number of shares and per share amounts of Common Stock have been
retroactively restated to reflect the reverse split.  In addition,
Shareholders also approved the reduction in the number of authorized shares
of Common Stock from 200 million to 75 million.

NOTE 6.  NEW ACCOUNTING STANDARD
- --------------------------------

     In February 1997, the Financial Accounting Standards Board issued
Statement of Financial Accounting Standards No. 128 (FAS 128), Earnings per
Share.  This Statement simplifies the standards for computing earnings per
share (EPS) and replaces the presentation of primary EPS with a presentation
of basic EPS.  It requires a dual presentation of basic and diluted EPS on
the face of the income statement.  The Company is required to adopt FAS 128
in the fourth quarter of 1997.  The Company does not expect the adoption of
FAS 128 to have a material impact on the Company's calculation of EPS.

NOTE 7.  RECLASSIFICATION
- -------------------------

     Minor reclassifications, other than those described in Note 4, have been
made to the prior year financial statements to conform to the current year's
presentation.


ITEM 2. - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
- -------------------------------------------------------------------------
     The following contains information regarding the results of the Company's
operations during the first quarter of 1997 compared with the first quarter of
1996, the outlook for dividends on Common Stock, and changes in liquidity and
capital resources of the Company during the first quarter of 1997.  Also
management's expectations of identifiable material trends are discussed.

OVERVIEW
- --------
     Earnings for the Company improved significantly during the first quarter of
1997 relative to the same period in 1996.  Net income increased from $0.4
million in the first quarter of 1996 to $11.5 million in the first quarter of
1997.  This improvement was due primarily to an increase in the amount of non-
cash income tax benefits recognized by the Company and to growth in the
Company's sales and revenues.  Due to continuing improvement in the Company's
profitability, the Company recognized non-cash tax benefits associated with the
expected future utilization of federal and state net operating loss
carryforwards generated in prior periods.  Such recognized benefits totaled
$14.3 million for the first quarter of 1997 compared with $4.8 million recorded
for the first quarter of 1996.  See Results of Utility Operations, Other Income
below.  Total kWh sales increased by 1.6% during the first quarter of 1997
relative to the same period in 1996.  Due to the increase in sales, higher
wholesale energy prices, and a 1.1% retail rate increase implemented on March
31, 1996, total operating revenues increased by 4.2% in the first quarter of
1997 compared with the same period in 1996.  Despite a 2.0% increase in the
Company's operating expenses, first quarter operating income increased by 21% in
1997 compared with the same period in 1996.

     Despite such improvements, the Company's financial prospects continue to be
subject to significant economic, regulatory and other uncertainties, some of
which are beyond the Company's control.  These uncertainties include the degree
of utilization of generation capacity through either retail electric service or
wholesale sales and the extent to which the Company, due to continued high
financial and operating leverage, can alter operations and reduce costs in
response to industry changes or unanticipated economic downturns.  The Company's
success will depend, in part, on the Company's ability to contain the costs of
serving retail customers and the level of sales to such customers.  Although the
Company anticipates continued growth in sales over the next five years primarily
as a result of anticipated population and economic growth in the Tucson area, a
number of factors such as changes in the economic and regulatory environment and
the increasingly competitive electric markets could affect the Company's levels
of sales.

     The Company is developing strategies to address the uncertainties discussed
above as well as to position itself to benefit from the changing regulatory
environment.  Such strategies include the implementation of enhanced cost
measurement and management techniques, organizational realignment and staffing
reductions, and the development of new entities to provide energy services to
markets beyond the Company's retail service territory.

     If the Company is unable to make sales at prices adequate to recover its
costs or if for other reasons the Company fails to maintain or improve its cash
flows, the Company's ability to meet its obligations may be jeopardized.  During
the period 1999-2003, $192 million of the Company's long-term debt obligations
will mature.  Letters of credit supporting $805 million of the Company's long-
term variable rate debt obligations also have scheduled expiration dates between
December 31, 1999 and December 31, 2002.  See Financing Developments below.
Should the credit ratings on the Company's senior debt securities reach
investment grade levels on certain dates or during certain periods subsequent to
January 1, 1998, the expiration dates for such letters of credit would move
forward to the period December 31, 1998 to December 31, 2000.  In the event that
expiring letters of credit are not replaced or extended, the corresponding
variable rate debt obligations would be subject to mandatory redemption.  While
the Company intends to pay or refinance maturing bonds, and to replace or extend
expiring letters of credit, there can be no assurance that the Company will be
able to pay such debt or replace or extend such letters of credit.  The
Company's future cash flows will also be affected by the level of interest rates
due to the significant amount of variable rate debt outstanding.  See Liquidity
and Capital Resources below.

     The Company's capital structure is highly leveraged and the Company's
ability to raise capital (through either public or private financings) is
limited.  The Company's ability to obtain debt financing is limited due to the
restrictive covenants contained in existing obligations to creditors.  To the
extent the Company refinances its debt obligations in order to repay them when
due, such refinancing may be made on terms which may be adverse to the Company.
Such terms could include, among other things, higher interest rates and various
restrictive covenants, such as dividend payment restrictions.  Access to equity
capital may be limited because of the Company's present inability to pay
dividends.  See Dividends on Common Stock below.

     During the next twelve months, the Company expects to be able to fund
operating activities and construction expenditures with internal cash flows,
existing cash balances, and, if necessary, drawdowns under the Renewable Term
Loan and/or borrowings under the Revolving Credit.  As discussed in Liquidity
and Capital Resources below, there are a variety of factors that could cause
actual cash flows to differ materially from projected cash flows.  As of May 8,
1997, the Company's cash balance including cash equivalents was approximately
$88 million.  Cash balances are invested in investment grade, money-market
securities with an emphasis on preserving the principal amount invested.



COMPETITION
- -------------

    WHOLESALE

     The Company competes with other utilities, marketers and independent power
producers in the sale of electric capacity and energy in the wholesale market.
The Company's prices for wholesale sales of capacity and energy, generally, are
not permitted to exceed rates determined on a cost of service basis.  In the
current market,  wholesale prices are substantially below costs determined on a
fully allocated cost of service basis, but, in all instances, wholesale sales
have been made at prices which exceed the level necessary to recover fuel and
other variable costs.  It is expected that competition to sell capacity will
remain vigorous, and that prices may remain depressed for at least the next
several years, due to increased competition and surplus capacity in the
southwestern United States.  Competition for the sale of capacity and energy is
influenced by many factors, including the availability of capacity in the
southwestern United States, the availability and prices of natural gas and oil,
spot energy prices and transmission access.  In addition, the Energy Policy Act
of 1992 has promoted increased competition in the wholesale electric power
markets by encouraging the participation of utility affiliates, independent
power producers and other non-utility participants in the development of power
generation.

     The FERC issued two orders pertaining to transmission access in April 1996.
FERC Order No. 888, among other things, requires all public utilities that own,
control, or operate interstate transmission facilities to offer transmission
service to others under a single tariff that incorporates certain minimum terms
and conditions of transmission service established by the FERC.  This tariff
must also be used by public utilities for their own wholesale market
transactions.  Transmission and generation services for new wholesale service
are to be unbundled and priced separately.  A Phase I open access tariff
containing the terms and conditions outlined in the Order was filed by the
Company on July 9, 1996.  The Company has since filed a Stipulation in Offer of
Settlement regarding the proposed tariff.  Such settlement has been certified as
being uncontested by the Administrative Law Judge assigned to this matter and
has been referred to the FERC for approval.

     FERC Order No. 889 requires transmission service providers to establish or
participate in an open access same-time information system (OASIS) that provides
information on the availability of transmission capacity to wholesale market
participants.  The order also establishes standards of conduct that are designed
to prevent employees of a public utility engaged in marketing functions from
obtaining preferential access to OASIS-related information or from engaging in
unduly discriminatory business practices.  The Company is in compliance with
these requirements.

     The Company and several other electric utilities located in the
southwestern United States have recently begun to investigate the feasibility of
forming an independent system operator for the region.  It is presently
contemplated that such an organization, if formed, would be responsible for
ensuring transmission reliability and nondiscriminatory access to the regional
transmission grid.  Other utilities involved in the feasibility study include
Arizona Public Service Company, El Paso Electric Company, Nevada Power Company,
Public Service Company of New Mexico, Salt River Project, Texas-New Mexico Power
Company, and the Western Area Power Administration - Desert Southwest Region.
Several public meetings have been held in order to obtain public input to the
study.  The feasibility study is expected to be completed by the end of 1997.
The formation of an independent system operator would be subject to approval by
the FERC and state regulatory authorities in the region.  The financial aspects
of forming an independent system operator, including the potential effects on
the Company's future results of operations, are being examined as part of the
feasibility study.

     Given the level of competition already present in the wholesale market for
electricity, the Company does not believe that FERC Order No. 888 or Order No.
889 will have a material effect on the Company's future results of operations.
However, such orders could assume greater significance if the Company's retail
service territory were to be opened to competing suppliers of electricity.


     RETAIL

     Under current law, the Company is not in direct competition with any other
regulated electric utility for electric service in the Company's retail service
territory.  However, the Company does compete against gas service suppliers and
others who may provide energy services which would be substitutes for, or bypass
of, the Company's services.  In addition, the ACC recently adopted rules that
require a phase-in of retail electric competition in Arizona over a four year
period beginning January 1, 1999.

     Electric energy for meeting retail customers' needs primarily competes with
natural gas, an alternative fuel source for certain retail energy uses.  Such
uses may include heating, cooling and a limited number of other energy
applications.  In most applications, electric energy is a cost effective source
of energy compared with natural gas.  Also, customers, particularly industrial
and large commercial customers, may own and operate facilities to generate their
own electric energy requirements and, if such facilities are qualifying
facilities, to require the displaced electric utility to purchase the output of
such facilities at "avoided costs" pursuant to the Public Utilities Regulatory
Act of 1978, as amended.  Such facilities may be operated by the customers
themselves or by other entities engaged for such purpose.

     The Company actively markets energy and customized energy-related services
to meet customer needs. The Company has to date lost no customers to self-
generation in part because of such efforts.  For example, the Company's two
principal mining customers, which provide approximately 10% of the Company's
total annual revenues from retail customers, each have considered self-
generation.  However, following negotiations with the Company in 1993 and 1994,
new contracts were executed that included, among other things, price reductions
and term extensions.  In 1996, the Company negotiated contract amendments with
its largest mining customer.  The contract amendments include, among other
things, price reductions, a market pricing mechanism covering a portion of the
customer's electrical load, and a change in service from a firm basis to an
interruptible basis.  Such contract is scheduled to expire in January 2003,
while the contract with the Company's other principal mining customer is
scheduled to expire in March 2001.  Early terminations of the contracts by
mining customers require at least one and up to two years prior notice.  To
date, no such notice has been received.  The ability to enter into or extend
contracts, to avoid early termination, and to retain customers will be dependent
on, among other things, the Company's ability to contain its costs, market
conditions and alternatives available to customers.  Changes in service
requirements (from a firm basis to an interruptible basis) may also permit the
Company to delay additions to peaking capacity.

     On December 23, 1996, the ACC voted to adopt rules on retail electric
competition.  The rules require each "Affected Utility" to open its retail
service area to competing electric service providers on a phased-in basis over
the period 1999 to 2003. Beginning no later than January 1, 1999, retail
customers representing at least 20% of each Affected Utility's 1995 peak demand
will be eligible to choose their electric service provider from companies
certificated by the ACC.  Such service providers would include Affected
Utilities as well as other entities that apply for and receive a certificate of
convenience and necessity from the ACC.  Beginning no later than January 1,
2001, retail customers representing at least 50% of each Affected Utility's 1995
peak demand will be eligible to choose their service provider.  All remaining
retail customers would then be eligible to choose from certificated service
providers by January 1, 2003.  Under the rules, Affected Utilities will be
required to provide distribution wheeling services (i.e., retail wheeling) at
rates approved by the ACC in order to facilitate sales by competing energy
providers.  Such wheeling services would involve the transmission of energy
produced by other entities over the Company's transmission and distribution
system to consumers located in the Company's present retail service area.
While retail wheeling will expose the Company's service area to increased
competition, it will also open additional markets into which the Company may
sell its electric power.

     The Affected Utilities whose service territories will be open to competing
service providers under the rules include the Company, Arizona Public Service
Company, Citizens Utilities Company, and several electric cooperatives.
However, electric cooperatives will be permitted to request a modification to
the phase-in schedule in order to preserve their tax exempt status or to modify
power supply arrangements and related loan agreements.  Each of the Affected
Utilities will be eligible to offer electric service to customers of other
certificated entities within Arizona.   Participation in competitive retail
markets by other electric utilities which are not regulated by the ACC, such as
the Salt River Project and certain municipal utilities, will be permitted under
the rules on a similar reciprocal basis (i.e., their service territories would
be similarly open to competing service providers).

     The rules require new market entrants to obtain a certificate of
convenience and necessity from the ACC prior to offering retail electric
service.  New market entrants will be required to demonstrate adequate technical
and financial capabilities to the ACC prior to certification.  In addition, all
competitive market participants, including Affected Utilities, will be required
to obtain at least one-half of one percent of the energy sold competitively in
the Arizona retail market from new solar generating resources by January 1,
1999.  This required percentage will increase to one percent on January 1, 2002.
New solar resources are defined under the rules as photovoltaic or solar thermal
resources that are installed on or after January 1, 1997.   Electric service
providers not in compliance with these solar resource standards will be subject
to a penalty of up to 30 cents per kWh to be applied to the kWh deficiency in
solar energy provided.

     The rules specify that the ACC shall allow the recovery of unmitigated
stranded costs by Affected Utilities.  Stranded cost is defined in the rules as
the net difference between the value of prudent jurisdictional assets and
obligations under traditional regulation and the market value of those assets
and obligations in a competitive retail market.  In order to recover stranded
costs, utilities would have to demonstrate to the ACC that they have taken every
feasible, cost effective measure to mitigate or offset stranded costs, and
utilities would have to file estimates of unmitigated stranded costs with the
ACC which are fully supported by analyses and records of market transactions
undertaken by willing buyers and sellers.  Furthermore, Affected Utilities would
have to seek ACC approval of distribution charges or other means of recovering
unmitigated stranded costs from customers who reduce or terminate service as a
direct result of retail competition.  The rules specify that other issues
related to the analysis and recovery of stranded costs would be examined by a
working group following adoption of the rules.  Until such time as the ACC
adopts specific guidelines for quantifying unmitigated stranded costs, including
the methods used to identify and value jurisdictional assets and obligations,
the Company believes that any estimate of unmitigated stranded costs would be
highly speculative.

     Each Affected Utility will be required to file unbundled service tariffs
with the ACC by December 31, 1997, for the following services: distribution
wheeling service, metering and meter reading services, billing and collection
services, open access transmission service (as approved by the FERC, if
applicable), ancillary services (as defined by FERC Order No. 888), information
services such as the provision of customer information to other service
providers, and other ancillary services necessary for safe and reliable system
operation.  Until such time as the ACC determines that retail competition has
been substantially implemented, each Affected Utility will also have to provide
standard offer bundled service equivalent to the services currently being
provided at regulated rates to all consumers located in their current retail
service areas.

     Pursuant to the rules, working groups have been formed to analyze various
issues related to retail competition.   Each working group consists of members
representing a wide variety of interests including the ACC Staff, consumers,
Affected Utilities, and potential new service providers.  Separate working
groups have been established to investigate issues related to the quantification
and recovery of stranded costs, the unbundling of utility services and rates,
the maintenance of system reliability and safety, the methods to be used in
determining consumer participation during the early phase-in periods, and
certain legal issues related to the rules.  Reports describing the activities
and recommendations of working group members are scheduled to be provided to the
ACC by the fourth quarter of 1997.  The Company is actively participating in
each of the working groups investigating retail competition issues.

     On January 10, 1997, the Company filed with the ACC a motion for
reconsideration and request for stay of the rules. Concerns expressed by the
Company in its motion included the potential impact on system reliability,
mechanisms for stranded cost quantification and recovery, the ability to compete
fairly with public power entities and recipients of federal preference power,
and certain legal deficiencies which would likely result in legal appeals and
litigation.  On January 30, 1997, the Company's motion for reconsideration was
deemed denied by the ACC by operation of law.  On February 28, 1997, the Company
filed an appeal of the ACC order in both the Arizona Superior Court and the
Arizona Court of Appeals.   At the present time, the Company is unable to
predict the outcome of the appeals or the effects such rules, in their present
form, would have on the Company's future results of operations.

     The Arizona Legislature is also investigating the potential merits of
retail electric competition.  Legislation was passed in 1996 requiring the
establishment of a joint legislative study committee on electric industry
competition.  This committee is charged with studying and making recommendations
on a wide variety of issues related to electric industry competition.   The
committee is to complete a report to the legislature no later than December 31,
1997.  Such report is to contain a proposal for electric utility competition for
implementation by December 31, 1999.  An advisory committee on electric industry
competition was also created, consisting of members representing electric
consumers, electric utilities, various State offices and agencies, and other
interested parties.  The Company has a representative on such advisory committee
who is actively participating as a committee member.   Three subcommittees of
the advisory committee were recently formed for purposes of evaluating the
timing of retail competition, reviewing tax issues related to retail competition
and identifying specific legislative actions necessary to implement retail
competition.

     The Company cannot predict whether or not there will be competing
initiatives on industry restructuring from both the ACC and the Arizona
Legislature.  However, the Company believes that certain matters contained in
the ACC's rules on retail competition may require legislative changes, while
other matters may require constitutional amendments.  Additionally, several
federal initiatives regarding retail electric competition have been introduced
in Congress which, if passed, could modify, augment or preempt the actions taken
by the ACC or the Arizona Legislature.  The Company will continue to assess the
likely impact of the ACC's rules on retail competition, proposed legislation on
retail competition, and other potential market reforms on the Company.  At the
present time the Company is unable to predict the ultimate impact of increased
retail competition on the Company's future results of operations. See Accounting
for the Effects of Regulation below for a discussion of the potential impact of
increased competition on the Company's accounting policies.


HOLDING COMPANY PROPOSAL
- ------------------------
     On April 4, 1997, the Company filed with the ACC a notice of intent to
organize a public utility holding company.  If approved by the ACC and the FERC,
the Company intends to establish through a one-for-one share exchange a new
corporate structure in which the Company will be a subsidiary of a new holding
company named UniSource Energy Corporation.  The Company is seeking to establish
a holding company structure because the Company believes that it is in the best
interests of its Shareholders for the Company to participate in various segments
of the evolving and expanding electric energy business.  The Company believes
that such participation would be facilitated and enhanced by the holding company
structure, a structure commonly used in the electric industry and other
industries to conduct different lines of business.  In May 1995, Shareholders
approved the formation of a holding company and the related one-for-one share
exchange.  If regulatory approvals are received, it is likely that no further
Shareholder approval would be required to effect the share exchange.

     If the holding company structure is established, substantially all of the
assets of the holding company initially following the share exchange would
consist of the Company's Common Stock.  The holding company would rely primarily
on funding sources other than TEP to fund its operations and to capitalize
affiliate companies because the Company is currently prohibited from paying
dividends (see Dividends on Common Stock below) and because the Company may be
prohibited from making investments in the holding company or affiliated
companies.  Also, the ACC's affiliated interest rules would limit certain
transactions between the holding company and the Company unless approved by the
ACC.  Accordingly, funds for the holding company would be limited until the
holding company obtains outside financing or until the affiliate companies are
able to pay cash dividends to the holding company.  The Company is reviewing
various methods for the holding company to obtain outside financing, including
the issuance of new equity by the holding company.

     In the unlikely event the holding company incurs liabilities in excess of
cash flow available from the Company, the affiliate companies or outside
financings, the holding company might not have sufficient cash available to meet
such liabilities.  Under such circumstances the Company may be required to seek
waivers of the provisions of certain of its credit agreements and leases and the
affiliated interest rules in order to permit the Company to provide interim
financing to the holding company.  There can be no assurance that a holding
company structure will be effected in the future, that the holding company will
be able to obtain outside financing, or that the Company would be able to obtain
necessary waivers if so required.


ACCOUNTING FOR THE EFFECTS OF REGULATION
- ----------------------------------------
     The Company prepares its financial statements in accordance with the
provisions of FAS 71.  This statement requires a cost-based rate-regulated
utility to reflect the effect of regulatory decisions in its financial
statements.  In certain circumstances, FAS 71 requires that certain costs and/or
obligations be reflected in a deferral account in the balance sheet and not be
reflected in the statement of income or loss until matching revenues are
recognized.  Therefore, the Company's Consolidated Balance Sheets at March 31,
1997, and at December 31, 1996, contain certain line items (for example,
Deferred Debits - Regulatory Assets and MSR Option Gain Regulatory Liability,
Accumulated Deferred Investment Tax Credits Regulatory Liability, and Other
Regulatory Liabilities) solely as a result of the application of FAS 71.  In
addition, a number of line items in the Company's Consolidated Statements of
Income for the quarters ended March 31, 1997 and 1996 also reflect the
application of FAS 71.

     As noted in Competition, Retail above, on December 23, 1996, the ACC voted
to adopt rules on retail electric competition.  Until such time as the ACC
adopts specific guidelines for quantifying unmitigated stranded  costs,
including the methods used to identify and value jurisdictional assets and
obligations, the Company is unable to predict whether it will recover the full
costs of its investments in utility plant assets and regulatory assets.  If less
than full recovery is provided, write-offs of assets may occur and the Company
may be unable to continue to apply FAS 71.

     Further, in response to the legislation adopted by the State of California
in 1996 establishing competitive markets for electricity in that state, the SEC
is reported to have questioned the continued applicability of FAS 71 by
California investor-owned utilities even though the recovery of stranded
costs is provided through a statutory funding mechanism.  It is reasonably
possible that the SEC could question the continued applicability of FAS 71 to
investor-owned utilities subject to similar legislation or regulatory action in
other states.  The Company understands that the Financial Accounting Standards
Board's Emerging Issues Task Force has agreed to commence consideration of this
issue during the second quarter of 1997.  Depending upon the outcome of such
review, the SEC's response to this issue, and the applicability to the retail
electric competition rules adopted in Arizona, the Company may be unable to
continue to apply FAS 71, even if it believes it will recover the full
amount of its costs under the ACC competition phase-in plan.  The Company is
unable to predict the outcome of these matters.

     If at some point in the future the Company determines that all or a portion
of the Company's regulated operations  no longer meet the criteria for continued
application of FAS 71, the Company would be required to adopt the provisions of
FAS 101 for that portion of the operations for which FAS 71 no longer applied.
Adoption of FAS 101 would require the Company to write off its regulatory assets
and liabilities as of the date of adoption of FAS 101 and would preclude the
future deferral in the balance sheet of costs not recovered through rates at the
time such costs were incurred, even if such costs were expected to be recovered
in the future.  Based on the balances of the Company's regulatory assets and
liabilities as of March 31, 1997, the Company estimates that if FAS 101 were
adopted and applied to all segments of the Company's operations,  an
extraordinary loss of $158 million, which includes a reduction for the related
deferred income taxes of $82 million, would be required.  The Company's cash
flows would not be affected by the adoption of FAS 101.

    At the present time, the Company recovers the costs of its plant assets
through its regulated revenues.  If in the future the Company discontinues
accounting according to the provisions of FAS 71, the Company would also need to
consider whether the markets in which the Company is then selling power will
allow the Company to recover the costs of its plant assets.  At that time, if
market prices are not expected to allow the Company to recover the costs of its
plant assets, additional write-downs may be required in accordance with the
provisions of FAS 121.


DIVIDENDS ON COMMON STOCK
- ------------------------
     The Company is precluded by restrictive covenants in certain debt
agreements from declaring or paying dividends.  No dividend on common stock has
been declared or paid since 1989.

     Under the applicable provisions of amendments to the Arizona General
Corporation Law, in effect starting in 1996, a company is permitted to make
distributions to shareholders unless, after giving effect to such distribution,
either (i) the company would not be able to pay its debts as they come due in
the usual course of business, or (ii) the company's total assets would be less
than the sum of its total liabilities plus the amount necessary to satisfy any
liquidation preferences of shareholders with preferential rights.  The Company
is not currently prevented from declaring and paying a dividend under such
provisions.

     The Company's ability to pay a dividend is restricted by certain covenants
of the General First Mortgage.  So long as certain series of First Mortgage
Bonds (aggregating $184 million in principal amount) are outstanding, these
covenants restrict the payment of dividends on Common Stock if certain cash flow
coverage and retained earnings tests are not met.  The cash flow coverage test
would prevent the Company from paying dividends on its Common Stock until such
time as the Company's cash flow coverage ratio, as defined therein, is greater
or equal to a ratio of 2 to 1, and the retained earnings test would permit
dividend payments if the Company has positive retained earnings rather than an
accumulated deficit.  As of March 31, 1997, the Company had a  cash flow
coverage ratio in excess of 2 to 1 and the Company's accumulated deficit was
$494 million.  Such covenants will remain in effect until the First Mortgage
Bonds of such series have been paid or redeemed.  The latest maturity of such
First Mortgage Bonds is in 2003.

     The MRA contains a dividend restriction based on the amount of retained
earnings.  Such restriction will no longer apply if (i) the Renewable Term Loan
and the Revolving Credit have been paid in full and the commitments relating
thereto have been terminated and (ii) the Company's senior long-term debt is
rated investment grade.  At May 8, 1997, there was no outstanding balance due
under the Renewable Term Loan, and to date no amounts have been borrowed under
the Revolving Credit.  Commitments relating to such facilities permit the
Company to borrow $140 million under the Renewable Term Loan and $50 million
under the Revolving Credit.  The Company's senior long-term debt is currently
rated below investment grade.

     In order for the Company to pay a dividend when such covenants would
otherwise restrict such payment, the Company would have to (i) obtain a waiver
or an amendment to the MRA's retained earnings covenant and (ii) redeem all
outstanding First Mortgage Bonds of the series that contain dividend
restrictions or amend the General First Mortgage.  Such General First Mortgage
amendment would require approval by holders of 75% of all First Mortgage Bonds.

     In addition to such restrictive covenants, the Federal Power Act states
that dividends shall not be paid out of funds properly included in the capital
account.  It is unclear whether such provisions of the Federal Power Act
restrict the Company from paying dividends.


EARNINGS
- --------
     The Company recorded net income of $11.5 million in the first quarter of
1997 compared with net income of $0.4 million in the first quarter of 1996.  The
net income per average share of Common Stock was $0.36 for the first quarter of
1997 compared with net income per average share of Common Stock of $0.01 for the
first quarter of 1996.


RESULTS OF OPERATIONS
- ---------------------

RESULTS OF UTILITY OPERATIONS

   SALES AND REVENUES

     Comparisons of kilowatt-hour sales and electric revenues are shown below:

                                                   Increase/(Decrease)
                                                   -------------------
Three Months Ended March 31      1997     1996     Amount      Percent
- ---------------------------      ----     ----    ------      -------
Electric kWh Sales (000):
   Retail Customers           1,622,441  1,581,425  41,016       2.6%
   Sales for Resale             715,187    719,064  (3,877)     (0.5)
                              ---------  ---------  ------
       Total                  2,337,628  2,300,489  37,139       1.6
                              ========   =========  ======

Electric Revenues (000):
   Retail Customers          $129,937    $125,210  $  4,727      3.8%
   Amortization of MSR Option
    Gain Regulatory Liability   5,013       5,013         -        -
   Sales for Resale            19,331      17,805     1,526      8.6
                              -------    --------  --------
       Total                 $154,281    $148,028  $  6,253      4.2
                             ========    ========  ========


     KWh sales to retail customers increased by 2.6% in the first quarter of
1997 compared with the first quarter of 1996, due primarily to a 2.6% increase
in the average number of retail customers.  Revenues from sales to retail
customers increased by 3.8% in the first quarter of 1997 compared with the same
period in 1996 due to higher kWh sales and a 1.1% retail rate increase
implemented by the Company on March 31, 1996.

     Sales for resale decreased by 0.5% in the first quarter of 1997 relative to
the same period in 1996.  However, revenues from sales for resale increased by
8.6% due to higher market prices for wholesale economy energy in the first
quarter of 1997 compared with the first quarter of 1996.  Factors contributing
to higher market prices included an increase in natural gas prices and a
reduction in regional generating capability due to planned and forced outages of
generating facilities in the southwestern United States.

  OPERATING EXPENSES

     Fuel and Purchased Power expense decreased slightly in the first quarter of
1997 compared with the same period in 1996.  This expense did not increase
proportionately with the increase in kWh sales due to take-or-pay payments for
fuel accrued in the first quarter of 1996.  No such payments were made or
accrued in the first quarter of 1997.

     Other Operations expense increased by $2.2 million in the first quarter of
1997 relative to the same period in 1996.  This increase was attributable to an
increase in payments for outside services as well as an adjustment related to
post-retirement benefits other than pensions.

     Depreciation and Amortization expense decreased by $2.0 million in the
first quarter of 1997 compared with the first quarter of 1996.  This decrease
was attributable to the completion in January 1997 of a three year amortization
period for Springerville Unit 2 Rate Synchronization Costs established in the
1994 Rate Order, as well as an extension of the depreciable life for pollution
control facilities as required by the Company's 1996 Rate Order.

     Taxes Other Than Income Taxes decreased by $2.4 million in the first
quarter of 1997 compared with the same period in 1996.  This decrease was due
primarily to a reduction in property tax rates and reduced property valuations
for tax purposes.

     Income Tax benefit included in Operating Expenses decreased by $3.5 million
in the first quarter of 1997 compared with the first quarter of 1996 due to an
increase in pre-tax operating income net of interest expense.

OTHER INCOME

     Income Tax benefits included in Other Income increased $7.2 million in the
first quarter of 1997 compared with the first quarter of 1996 due primarily to
increased NOL benefit recognition resulting from a revision in the expected
future utilization of NOLs generated in prior periods.  The Company recognizes
benefits related to prior period NOLs based on changes in the estimated amount
of NOLs that in the Company's judgment are more likely than not to be realized
in the future.  A significant factor, among others, considered in estimating
such amount is the three year historical average book income before taxes.

     If the Company's operating results continue to improve, the three year
historical average net book income would continue to increase.  Correspondingly,
the Company would likely recognize additional NOL benefits totaling up to
approximately $27 million over the next two years relating to prior period NOLs
unrecognized at March 31, 1997.  The amount of NOL benefits recognized in
periods subsequent to March 31, 1997, if any, and the timeframe in which such
benefits are recognized, may vary significantly from the estimate described in
this paragraph.  In addition, in future periods when such NOLs are utilized for
income tax purposes to offset taxable income, income tax expense shown on the
Company's Consolidated Statements of Income will not be reduced to reflect such
utilization.


LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------
     The Company expects to generate sufficient cash flows during 1997 to fund
its continuing operating activities and construction expenditures.  However, the
Company's projected cash flows are subject to variation due to changes in
wholesale revenues, changes in short-term interest rates, and other factors.
For example, an increase in short-term interest rates of 100 basis points (1%)
would result in an approximate $9 million increase in annual interest payments.
If cash flows were to fall short of expectations, the Company would rely on
existing cash balances, borrowings under the Renewable Term Loan and, if
necessary, borrowings under the Revolving Credit.

     At May 8, 1997, there was no outstanding balance due under the Renewable
Term Loan, and to date, no amount has been borrowed under the Revolving Credit.
Pursuant to the terms of the MRA, the Renewable Term Loan commitment is
scheduled to decrease by 5% per quarter during 1997 and by 10% per quarter in
1998 and 1999, resulting in termination of the commitment by December 31, 1999.
As such, the Renewable Term Loan commitment decreased from $164 million to $156
million as of March 31, 1997.  Due to MRA provisions regarding the optional
prepayment of debt obligations, and the April 1997 refinancing of $31.4 million
of floating rate IDBs (see Financing Developments below), the Renewable Term
Loan commitment was reduced by an additional $16 million as of April 29, 1997,
to $140 million.  The Revolving Credit commitment remained at $50 million as of
May 8, 1997.

     The Company's cash and cash equivalents balance at May 8, 1997 was
approximately $88 million.  Cash balances are invested in investment grade
money-market securities with an emphasis on preserving the principal amounts
invested.

CASH FLOWS

     The Company's cash and cash equivalents increased $37.7 million or 55%,
from the March 31, 1996 ending balance of $68.9 million to the March 31, 1997
ending balance of $106.6 million.  This increase was due to the receipt of net
cash flows from operating activities in excess of the net cash flows required
for investing and financing activities for the twelve month period ended March
31, 1997.

     Net cash flows from operating activities increased in aggregate by $11.7
million in the first quarter of 1997 compared with the same period in 1996.
This increase was due primarily to an increase in cash receipts from retail and
wholesale customers and a $4.6 million reduction in wages paid (net of amounts
capitalized) during the first quarter of 1997 compared with the same period in
1996.  These increases to net cash flows were partially offset by the receipt of
$4.1 million in cash related to the sale of emission allowances in the first
quarter of 1996.

     Net cash outflows from investing activities decreased in aggregate by $1.6
million in the first quarter of 1997 compared with the same period in 1996, due
primarily to a reduction in construction expenditures.  This reduction was
partially offset by a $1.3 million increase in investments in joint ventures.

     Net cash outflows from financing activities increased in aggregate by $20.8
million in the first quarter of 1997 compared with the same period in 1996 as a
result of the Company's repayment of the $31 million Renewable Term Loan balance
during the first quarter of 1997.


FINANCING DEVELOPMENTS

     On April 29, 1997, the City of Farmington, New Mexico issued $80.41 million
aggregate principal amount of its 1997 Series A Pollution Control Revenue Bonds
(Tucson Electric Power Company San Juan Project) for the benefit of the Company.
The proceeds from this issuance have been made available to the Company under an
installment sale agreement and will be used on June 12, 1997 to redeem all of
the City of Farmington's Series 1973 Pollution Control Revenue bonds (Tucson Gas
& Electric Company San Juan Project), 6.25% due in 2003 ($47.91 million
aggregate principal amount) and all of the City of Farmington's 1977 Series A
Collateralized Pollution Control Revenue bonds (Tucson Gas & Electric Company
San Juan Project), 6.10% due 2007 ($32.5 million aggregate principal amount).
The Farmington 1977 Series A bonds were secured by an equal principal amount of
First Mortgage Bonds.  The new bonds, which are unsecured,  pay interest at a
fixed annual rate of 6.95% and will mature in October 2020.

     On April 29, 1997, the Coconino County, Arizona Pollution Control
Corporation issued $36.7 million aggregate principal amount of its 1997 Series A
Pollution Control Revenue Bonds (Tucson Electric Power Company Navajo Project)
for the benefit of the Company.  The proceeds from this issuance have been
loaned to the Company and will be used on June 4, 1997 to (i) redeem all of the
1996 Series A Pollution Control Revenue Bonds (Tucson Electric Power Company
Project), variable rate due 2031 ($16.7 million aggregate principal amount) and
(ii) fund the construction of additional pollution abatement facilities at the
Navajo Generating Station.  The new bonds, which are unsecured, pay interest at
a fixed annual rate of 7.125% and will mature in October 2032.

     On April 29, 1997, the Coconino County, Arizona Pollution Control
Corporation also issued $14.7 million aggregate principal amount of its 1997
Series B Pollution Control Revenue Bonds (Tucson Electric Power Company Navajo
Project) for the benefit of the Company.  The proceeds from this issuance have
been loaned to the Company and will be used on June 4, 1997 to redeem all of the
1996 Series B Pollution Control Refunding Revenue Bonds (Tucson Electric Power
Company Project), variable rate due 2031 ($14.7 million aggregate principal
amount).  The new bonds, which are unsecured,  pay interest at a fixed annual
rate of 7.00% and will mature in October 2032.

     The refunded Coconino bonds are backed by letters of credit.  The issuers
of such letters of credit received First Mortgage Bonds in the aggregate
principal amount of $34.5 million to secure the Company's reimbursement
obligations.  Upon the redemption of such Coconino bonds, the aggregate
principal amount of Company debt backed by letters of credit will be reduced
from $805 million to $774 million.  The aggregate principal amount of First
Mortgage Bonds outstanding will also be reduced by $34.5 million.

SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS
- ------------------------------------------
     This Quarterly Report on Form 10-Q contains forward-looking statements as
defined by the Private Securities Litigation Reform Act of 1995.  The Company is
including the following cautionary statements to make applicable and take
advantage of the safe harbor provisions of the Private Securities Litigation
Reform Act of 1995 for any forward-looking statements made by, or on behalf, of
the Company in this Quarterly Report on Form 10-Q.  Forward-looking statements
include statements concerning plans, objectives, goals, strategies, future
events or performance and underlying assumptions and other statements which are
other than statements of historical facts.  Such forward-looking statements may
be identified, without limitation, by the use of the words "anticipates,"
"estimates," "expects," "intends," "plans," "predicts," "projects," and similar
expressions.  From time to time, the Company may publish or otherwise make
available forward-looking statements of this nature.  All such forward-looking
statements, whether written or oral, and whether made by or on behalf of the
Company, are expressly qualified by these cautionary statements and any other
cautionary statements which may accompany the forward-looking statements.  In
addition, the Company disclaims any obligation to update any forward-looking
statements to reflect events or circumstances after the date hereof.

     Forward-looking statements involve risks and uncertainties which could
cause actual results or outcomes to differ materially from those expressed in
the forward-looking statements.  The Company's expectations, beliefs and
projections are expressed in good faith and are believed by the Company to have
a reasonable basis, including without limitation, management's examination of
historical operating trends, data contained in the Company's records and other
data available from third parties, but there can be no assurance that
management's expectations, beliefs or projections will result or be achieved or
accomplished.  In addition to other factors and matters discussed elsewhere
herein, some of the important factors that, in the view of the Company, could
cause actual results to differ materially from those discussed in the forward-
looking statements include the following:

1. Effects of restructuring initiatives in the electric industry and other
   energy-related industries.

2. Changes in economic conditions, demographic patterns and weather conditions
   in the Company's retail service area.

3. Changes affecting the Company's cost of providing electrical service
   including, but not limited to, changes in fuel costs, generating unit
   operating performance, interest rates, tax laws, environmental laws, and the
   general rate of inflation.

4. Changes in governmental policies and regulatory actions with respect to
   allowed rates of return, financings, and rate structures.

5. Changes affecting the cost of competing energy alternatives, including
   changes in available generating technologies and changes in the cost of
   natural gas.

6. Changes in accounting principles or the application of such principles to the
   Company.


                          PART II - OTHER INFORMATION

ITEM 1. -- LEGAL PROCEEDINGS
==============================================================================
TAX ASSESSMENTS

     See Note 1 of Notes to Condensed Consolidated Financial Statements, Tax
Assessments.


ITEM 6. -- EXHIBITS AND REPORTS ON FORM 8-K
==============================================================================
(a)   Exhibits.

        -  See Exhibit Index.


(b)   Reports on Form 8-K.

        -  The Company has not filed any Current Reports on Form 8-K since
        filing the Form 10-K for 1996.



                                   SIGNATURE


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


                                     TUCSON ELECTRIC POWER COMPANY
                                     =============================
                                               (Registrant)


Date:  May 14, 1997                             Ira R. Adler
                                   ------------------------------------
                                                Ira R. Adler
                                   Senior Vice President and Principal
                                             Financial Officer



                                 EXHIBIT INDEX

     4a - Amended and Restated Installment Sale Agreement, dated as of April 1,
          1997, between the City of Farmington, New Mexico and the Registrant
          relating to Pollution Control Revenue Bonds, 1997 Series A (Tucson
          Electric Power Company San Juan Project).
     4b - City of Farmington, New Mexico Ordinance No. 97-1055, adopted April
          17, 1997, authorizing Pollution Control Revenue Bonds, 1997 Series A
          (Tucson Electric Power Company San Juan Project).
     4c - Loan Agreement, dated as of April 1, 1997, between Coconino County,
          Arizona Pollution Control Corporation and the Registrant relating to
          Pollution Control Revenue Bonds, 1997 Series A (Tucson Electric Power
          Company Navajo Project).
     4d - Indenture of Trust, dated as of April 1, 1997, between Coconino
          County, Arizona Pollution Control Corporation and First Trust of New
          York, National Association, authorizing Pollution Control Revenue
          Bonds, 1997 Series A  (Tucson Electric Power Company Navajo Project).
     4e - Loan Agreement, dated as of April 1, 1997, between Coconino County,
          Arizona Pollution Control Corporation and the Registrant relating to
          Pollution Control Revenue Bonds, 1997 Series B (Tucson Electric Power
          Company Navajo Project).
     4f - Indenture of Trust, dated as of April 1, 1997, between Coconino
          County, Arizona Pollution Control Corporation and First Trust of New
          York, National Association, authorizing Pollution Control Revenue
          Bonds, 1997 Series B  (Tucson Electric Power Company Navajo Project).
     15 - Letter regarding unaudited interim financial information.
     27 - Financial Data Schedule.



                                                               
                                                               
                                                               
                                                               
                                                               
                                                               
                                                               
                                                               
                                                               
                                                     Exhibit 15
                                                               
                                                               




Tucson Electric Power Company
220 West Sixth Street
Tucson, Arizona  85701

We have made a review, in accordance with standards established
by the American Institute of Certified Public Accountants, of
the unaudited interim financial information of Tucson Electric
Power Company and subsidiaries (the Company) for the three-
month periods ended March 31, 1997 and 1996, as
indicated in our report dated May 2, 1997; because we did not
perform an audit, we expressed no opinion on that information.

We are aware that our report referred to above, which is
included in your Quarterly Report on Form 10-Q for the
quarter ended March 31, 1997, is incorporated by reference in
Post-Effective Amendment No. 1 to Registration Statement No. 33-
55732 of the Company on Form S-3, Registration Statement No. 33-
58173 of UniSource Energy Corporation on Form S-4, and
Registration Statements No. 33-56523, No. 33-57233 and No. 33-
57231 of the Company on Form S-8.

We are also aware that the aforementioned report, pursuant to
Rule 436(c) under the Securities Act of 1933, is not considered
a part of the Registration Statement prepared or certified by
an accountant or a report prepared or certified by an
accountant within the meaning of Sections 7 and 11 of that Act.



DELOITTE & TOUCHE LLP

May 12, 1997


<TABLE> <S> <C>



<ARTICLE> UT
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               MAR-31-1997
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    1,947,254
<OTHER-PROPERTY-AND-INVEST>                     70,443
<TOTAL-CURRENT-ASSETS>                         213,820
<TOTAL-DEFERRED-CHARGES>                       291,340
<OTHER-ASSETS>                                       0
<TOTAL-ASSETS>                               2,522,857
<COMMON>                                       638,908
<CAPITAL-SURPLUS-PAID-IN>                            0
<RETAINED-EARNINGS>                          (494,106)
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 144,802
                                0
                                          0
<LONG-TERM-DEBT-NET>                         1,192,025
<SHORT-TERM-NOTES>                               3,567
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                    1,635
                            0
<CAPITAL-LEASE-OBLIGATIONS>                    892,570
<LEASES-CURRENT>                                15,833
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 272,425
<TOT-CAPITALIZATION-AND-LIAB>                2,522,857
<GROSS-OPERATING-REVENUE>                      154,281
<INCOME-TAX-EXPENSE>                           (2,348)
<OTHER-OPERATING-EXPENSES>                     135,839
<TOTAL-OPERATING-EXPENSES>                     133,491
<OPERATING-INCOME-LOSS>                         20,790
<OTHER-INCOME-NET>                              15,304
<INCOME-BEFORE-INTEREST-EXPEN>                  36,094
<TOTAL-INTEREST-EXPENSE>                        24,602
<NET-INCOME>                                    11,492
                          0
<EARNINGS-AVAILABLE-FOR-COMM>                   11,492
<COMMON-STOCK-DIVIDENDS>                             0
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                          26,977
<EPS-PRIMARY>                                     0.36
<EPS-DILUTED>                                     0.36
        


</TABLE>

                                                          EXHIBIT 4a

          =================================================================




                   AMENDED AND RESTATED INSTALLMENT SALE AGREEMENT
             (AMENDING AND RESTATING THE TWO INSTALLMENT SALE AGREEMENTS
           DATED AS OF DECEMBER 1, 1973 AND NOVEMBER 1, 1977, RESPECTIVELY)



                                       BETWEEN



                            CITY OF FARMINGTON, NEW MEXICO
                                        VENDOR



                                         AND



                            TUCSON ELECTRIC POWER COMPANY
                                        VENDEE


                                     ------------




                              DATED AS OF APRIL 1, 1997



                                    -------------



                                     RELATING TO

                           POLLUTION CONTROL REVENUE BONDS,
                                    1997 SERIES A
                   (TUCSON ELECTRIC POWER COMPANY SAN JUAN PROJECT)



          =================================================================

   <PAGE> 




                                  TABLE OF CONTENTS

                                                                       Page
                                                                       ----

          AMENDED AND RESTATED INSTALLMENT SALE AGREEMENT . . . . . . .   1

                                      ARTICLE I

                                     DEFINITIONS

          SECTION 1.01.  Definitions  . . . . . . . . . . . . . . . . .   3
          SECTION 1.02.  Incorporation of Certain 
                         Definitions by Reference  . . . . . . . . . .    7

                                     ARTICLE II

                       REPRESENTATIONS, WARRANTIES AND FINDINGS

          SECTION 2.01.  Representations and Warranties of the City.  .   7
          SECTION 2.02.  Representations and Warranties of the Company    7
          SECTION 2.03.  Findings of the City.  . . . . . . . . . . . .   8

                                     ARTICLE III

                     PRIOR CONVEYANCE TO THE CITY; THE FACILITIES

          SECTION 3.01.  Prior Conveyance to the City.  . . . . . . . .   8
          SECTION 3.02.  Revision of Plans and Specifications . . . . .   8
          SECTION 3.03.  Maintenance of Facilities; Remodeling; Notice of
                          Damages . . . . . . . . . . . . . . . . . . .   9
          SECTION 3.04.  Insurance  . . . . . . . . . . . . . . . . . .   9
          SECTION 3.05.  Condemnation; Eminent Domain.  . . . . . . . .   9

                                      ARTICLE IV

                           ISSUANCE AND SALE OF THE BONDS;
                         DISPOSITION OF PROCEEDS OF THE BONDS

          SECTION 4.01.  Issuance of the Bonds  . . . . . . . . . . . .  10
          SECTION 4.02.  Issuance of Other Obligations. . . . . . . . .  10
          SECTION 4.03.  Disposition of Bond Proceeds.  . . . . . . . .  10
          SECTION 4.04.  Investment of Moneys in Funds and Accounts.  .  10

                                      ARTICLE V

                               PURCHASE BY THE COMPANY;
                      PURCHASE PRICE PAYMENTS; OTHER OBLIGATIONS

          SECTION 5.01.  Prior Purchase by the Company. . . . . . . . .  10
          SECTION 5.02.  Purchase Price Payments. . . . . . . . . . . .  11

          -----------------
          *    This table of contents is not part of the Installment Sale
               Agreement, and is for convenience only.  The captions herein
               are of no legal effect and do not vary the meaning or legal
               effect of any part of the Installment Sale Agreement.


   <PAGE> 

          SECTION 5.03.  Payments Pledged and Assigned; Obligation
                          Absolute  . . . . . . . . . . . . . . . . . .  11
          SECTION 5.04.  Payment of Expenses  . . . . . . . . . . . . .  11
          SECTION 5.05.  Indemnification  . . . . . . . . . . . . . . .  11
          SECTION 5.06.  Payment of Taxes; Discharge of Liens . . . . .  12

                                      ARTICLE VI

                                  SPECIAL COVENANTS

          SECTION 6.01.  Maintenance of Corporate Existence . . . . . .  12
          SECTION 6.02.  Permits or Licenses  . . . . . . . . . . . . .  13
          SECTION 6.03.  City's Access to Facilities. . . . . . . . . .  13
          SECTION 6.04.  Tax-Exempt Status of Interest on Bonds.  . . .  13
          SECTION 6.05.  Use of Facilities  . . . . . . . . . . . . . .  14
          SECTION 6.06.  Financing Statements . . . . . . . . . . . . .  14
          SECTION 6.07.  No Warranties. . . . . . . . . . . . . . . . .  14
          SECTION 6.08.  Quiet Enjoyment. . . . . . . . . . . . . . . .  14
          SECTION 6.09.  Additional Payments by Company Concerning the
                          Facilities. . . . . . . . . . . . . . . . . .  15
          SECTION 6.10   Qualification in New Mexico  . . . . . . . . .  15

                                     ARTICLE VII

                           ASSIGNMENT, LEASING AND SELLING

          SECTION 7.01.  By the City. . . . . . . . . . . . . . . . . .  15
          SECTION 7.02.  By the Company . . . . . . . . . . . . . . . .  15
          SECTION 7.03.  Instrument Furnished to the City and Trustee .  17
          SECTION 7.04.  Limitation . . . . . . . . . . . . . . . . . .  17

                                     ARTICLE VIII

                            EVENTS OF DEFAULT AND REMEDIES

          SECTION 8.01.  Events of Default  . . . . . . . . . . . . . .  17
          SECTION 8.02.  Force Majeure  . . . . . . . . . . . . . . . .  17
          SECTION 8.03.  Remedies . . . . . . . . . . . . . . . . . . .  18
          SECTION 8.04.  No Remedy Exclusive  . . . . . . . . . . . . .  18
          SECTION 8.05.  Reimbursement of Attorneys' and Agents' Fees .  18
          SECTION 8.06.  Waiver of Breach . . . . . . . . . . . . . . .  18

                                      ARTICLE IX

                        PREPAYMENT OF PURCHASE PRICE PAYMENTS;
                                 REDEMPTION OF BONDS

          SECTION 9.01.  Prepayment of Purchase Price Payments; Redemption
                          of Bonds  . . . . . . . . . . . . . . . . . .  19
          SECTION 9.02.  Compliance with the Ordinance  . . . . . . . .  19

   <PAGE> 


                                      ARTICLE X

                                    MISCELLANEOUS

          SECTION 10.01.  Term of Agreement . . . . . . . . . . . . . .  19
          SECTION 10.02.  Effect of Plant Agreements  . . . . . . . . .  19
          SECTION 10.03.  Notices . . . . . . . . . . . . . . . . . . .  19
          SECTION 10.04.  Parties in Interest . . . . . . . . . . . . .  20
          SECTION 10.05.  Amendments  . . . . . . . . . . . . . . . . .  20
          SECTION 10.06.  Counterparts  . . . . . . . . . . . . . . . .  20
          SECTION 10.07.  Severability  . . . . . . . . . . . . . . . .  20
          SECTION 10.08.  Governing Law . . . . . . . . . . . . . . . .  20

          Signatures  . . . . . . . . . . . . . . . . . . . . . . . . .  21
          Exhibit A Description of Facilities . . . . . . . . . . . . . A-1


   <PAGE> 



                   AMENDED AND RESTATED INSTALLMENT SALE AGREEMENT 

               THIS AMENDED AND RESTATED INSTALLMENT SALE AGREEMENT, dated
          as of April 1, 1997 (this "Agreement"), between the CITY OF
          FARMINGTON, in the County of San Juan, an incorporated
          municipality, a body politic and corporate, existing under the
          Constitution and laws of the State of New Mexico (hereinafter
          called the "City"), as Vendor, and TUCSON ELECTRIC POWER COMPANY,
          a corporation organized and existing under the laws of the State
          of Arizona, formerly known as Tucson Gas & Electric Company
          (hereinafter called the "Company"), as Vendee, being an amendment
          to and a restatement in its entirety of those certain Installment
          Sale Agreements, dated as of December 1, 1973 (the "Series 1973
          Installment Sale Agreement") and November 1, 1977 (the "Series
          1977 Installment Sale Agreement"), each between the City, as
          Vendor, and the Company, as Vendee (it being understood that
          Public Service Company of New Mexico was, but no longer is, an
          additional Vendee under such Installment Sale Agreement dated as
          of December 1, 1973).

                                W I T N E S S E T H :

               WHEREAS, the City is authorized and empowered under the
          Pollution Control Revenue Bond Act, Chapter 397, Laws of 1973 of
          the State of New Mexico, 31st Legislature, 1st Session, as
          amended (the "Act"), to issue revenue bonds for and to acquire,
          whether by construction, purchase, gift or lease, one or more
          projects consisting of any land, interest in land, building,
          structure, facility, system, fixture, improvement, appurtenance,
          machinery, equipment or any combination thereof, or any interest
          in any one or more of the foregoing, whether or not presently in
          existence or under construction, used by any individual,
          partnership, firm, company, corporation (including a public
          utility), association, trust, estate, political subdivision,
          state agency or any other legal entity, or its legal
          representative, agent or assigns, substantially for the
          reduction, abatement or prevention of pollution, including, but
          not limited to, the removal of pollutants, contaminants or
          foreign substances from land, air or water, or for the removal or
          treatment of any substance in a processed material which would
          otherwise cause pollution when such material is used, provided
          that any such project shall be located within the State of New
          Mexico and within or without or partially within or without the
          City, but not more than fifteen miles outside of the corporate
          limits of the City (or that, if there is no municipality within
          fifteen miles of the project, the City is in the county in which
          the project is or may be located) and to sell or lease or
          otherwise dispose of any or all of such projects upon such terms
          and conditions as the governing body of the City (hereinafter
          called the "City Council") may deem advisable and as shall not
          conflict with the provisions of the Act; and

               WHEREAS, the San Juan Generating Station, an electric power
          generating plant, is located within fifteen miles of the
          corporate limits of the City in San Juan County, New Mexico but
          not within the corporate limits of any municipality; and

               WHEREAS, on August 28, 1973, the City Council adopted
          Resolution Number 709 ("Resolution No. 709") determining to issue
          and, subject to certain conditions, agreeing to issue revenue
          bonds under the Act to finance the costs to the Company of
          certain facilities for the reduction, abatement or prevention of
          pollution caused by the operation of the San Juan Generating
          Station, including facilities for the reduction, abatement or
          prevention of pollution caused by the operation of Units 1 and 2
          of such generating station (the "Facilities") and authorizing the
          Mayor of the City to execute and deliver preliminary agreements
          relating thereto and, subject to certain conditions, to take such
          steps and actions as required or necessary in order to issue such
          revenue bonds, and a Preliminary Agreement (the "Original
          Preliminary Agreement"), in the form contemplated by Resolution
          No. 709, was executed and delivered by the City and the Company;
          and

               WHEREAS, on November 27, 1973, the City Council adopted
          Resolution Number 721 ("Resolution No. 721") in order to
          authorize consideration of the adoption of a proposed Ordinance,
          in order to, among other matters, increase the aggregate
          principal amount of revenue bonds authorized to be issued by the
          City to finance the costs to the Company of the acquisition,
          construction and installation of the Facilities; and

               WHEREAS, on August 13, 1974, the City Council adopted
          Resolution Number 751 ("Resolution No. 751") authorizing the
          Mayor of the City to execute and deliver certain amendments to
          the Original Preliminary Agreement in order to, among other
          matters, further increase the aggregate principal amount of
          revenue bonds authorized to be issued by the City to finance the
          costs to the Company of the acquisition, construction and
          installation of the Facilities; and

               WHEREAS, a supplemental preliminary agreement (the
          "Supplemental Preliminary Agreement," and, together with the
          Original Preliminary Agreement and Resolution No. 721, the
          "Preliminary Agreement"), in the form contemplated by Resolution
          No. 751, was executed and delivered by the City and the Company
          on August 13, 1974; and

               WHEREAS, pursuant to Ordinance No. 486, adopted by the City
          Council on December 17, 1973, as supplemented by Ordinance No.
          487, adopted by the City Council on January 3, 1974 (together,
          the "Series 1973 Ordinance"), the City has heretofore issued and
          sold $55,000,000 aggregate principal amount of its Pollution
          Control Revenue Bonds, Series 1973 (Tucson Gas & Electric Company
          San Juan Project), of which $47,910,000 in principal amount
          remains outstanding (the "1973 Bonds"), the proceeds of which
          were to be used to finance a portion of the costs to the Company
          of the acquisition, construction and installation of the
          Facilities at Units 1 and 2 of the San Juan Generating Station
          described in Exhibit A to the Series 1973 Installment Sale
          Agreement; and

               WHEREAS, Public Service Company of New Mexico has redeemed
          the pollution control revenue bonds secured by revenues derived
          pursuant to the Series 1973 Installment Sale Agreement and its
          obligations and rights pursuant thereto have been discharged so
          that the Company remains the sole Vendee thereunder; and

               WHEREAS, pursuant to Ordinance No. 579, adopted by the City
          Council on November 1, 1977, as supplemented by Ordinance No.
          580, adopted by the City Council on November 8, 1977 (together,
          the "Series 1977 Ordinance"), the City has also heretofore issued
          and sold $32,500,000 aggregate principal amount of its
          Collateralized Pollution Control Revenue Bonds, 1977 Series A
          (Tucson Gas & Electric Company San Juan Project), of which
          $32,500,000 in principal amount remains outstanding (the "1977
          Bonds") (the 1973 Bonds and the 1977 Bonds being hereinafter
          called, collectively, the "Prior Bonds"), the proceeds of which
          were to be used to finance a portion of the costs to the Company
          of the acquisition, construction and installation of the
          Facilities at Units 1 and 2 of the San Juan Generating Station
          described in Exhibit A to the Series 1977 Installment Agreement;
          and

               WHEREAS, in order to refinance the Facilities through the
          refunding and redemption of the Prior Bonds, the City intends to
          issue and sell its Pollution Control Revenue Bonds, 1997 Series A
          (Tucson Electric Power Company San Juan Project) (the "Bonds")
          pursuant to Ordinance No. 97-1055, adopted by the City Council on
          April 17, 1997, and Resolution No. 97-879, adopted by the City
          Council on April 17, 1997 (together, the "Ordinance"), for the
          purpose of providing funds which, together with other funds
          available therefor, will be sufficient to refund and redeem the
          Prior Bonds; and

               WHEREAS, in connection with the issuance of the Bonds, the
          Company has requested that the Series 1973 Installment Sale
          Agreement and the Series 1977 Installment Sale Agreement (each an
          "Original Sale Agreement," and hereinafter collectively referred
          to as the "Original Sale Agreements") be amended and restated;

               NOW, THEREFORE, the parties hereto, intending to be legally
          bound hereby and in consideration of the premises, DO HEREBY
          AGREE as follows:

   <PAGE> 



                                      ARTICLE I

                                     DEFINITIONS

               SECTION 1.01.  Definitions.  The terms defined in this
          Article I shall for all purposes of this Agreement have the
          meanings herein specified, unless the context clearly requires
          otherwise: 

          Act:

               "Act" shall mean the Pollution Control Revenue Bond Act,
          Chapter 397, Laws of 1973 of the State of New Mexico, 31st
          Legislature, 1st Session, as amended by Chapter 312, Laws of 1977
          of the State of New Mexico, 33rd Legislature, 1st Session, by
          Chapter 181, Laws of 1978 of the State of New Mexico, 33rd
          Legislature, 2nd Session, and by Chapter 114, Laws of 1983 of the
          State of New Mexico, 36th Legislature, 1st Session, and all acts
          supplemental thereto or amendatory thereof.

          Administration Expenses:

               "Administration Expenses" shall mean the reasonable expenses
          incurred by the City with respect to this Agreement, the
          Ordinance and any transaction or event contemplated by this
          Agreement or the Ordinance, including the compensation and
          reimbursement of expenses and advances payable to the Trustee, to
          the paying agent, any co-paying agent and the registrar under the
          Ordinance.

          Agreement:

               "Agreement" shall mean this Amended and Restated Installment
          Sale Agreement, dated as of April 1, 1997, between the City and
          the Company, and any and all modifications, alterations,
          amendments and supplements hereto.

          Authorized Company Representative:

               "Authorized Company Representative" shall mean each person
          at the time designated to act on behalf of the Company by written
          certificate furnished to the City and the Trustee containing the
          specimen signature of such person and signed on behalf of the
          Company by its President, any Vice President or its Treasurer,
          together with its Secretary or any Assistant Secretary.

          Bond Counsel:

               "Bond Counsel" shall mean any firm or firms of nationally
          recognized bond counsel experienced in matters pertaining to the
          validity of, and exclusion from gross income for federal tax
          purposes of interest on bonds issued by states and political
          subdivisions, selected by the Company and acceptable to the City.

          Bond Fund:

               "Bond Fund" shall mean the fund created by Section 4.01 of
          the Ordinance.

          Bonds:

               "Bond" or "Bonds" shall mean the Pollution Control Revenue
          Bonds, 1997 Series A (Tucson Electric Power Company San Juan
          Project) of the City.

          City:

               "City" shall mean the City of Farmington, in the County of
          San Juan, an incorporated municipality, a body politic and
          corporate, existing under the Constitution and laws of the State
          of New Mexico, and its successors and their assigns.

          City Council:

               "City Council" shall mean the City Council of the City or
          the board or other body in which general legislative powers of
          the City subsequently may be vested.

          Code:

               "Code" shall mean the Internal Revenue Code of 1986 or any
          successor statute thereto.  Each reference to a section of the
          Code herein shall be deemed to include the United States Treasury
          Regulations proposed or in effect thereunder and applicable to
          the Bonds or the use of the proceeds thereof, unless the context
          clearly requires otherwise.  Reference to any particular Code
          section shall, in the event of a successor Code, be deemed to be
          a reference to the successor to such Code section.

          Company:

               "Company" shall mean Tucson Electric Power Company, a
          corporation organized and existing under the laws of the State of
          Arizona, its successors and their assigns, including, without
          limitation, any successor obligor under Section 6.01 and 7.02 to
          the extent of the obligations assumed thereunder.

          Company Mortgages:

               "Company Mortgages" shall mean the Indenture, dated as of
          April 1, 1941, between The Tucson Gas, Electric Light and Power
          Company (predecessor of the Company) and The Chase National Bank
          of the City of New York (now The Chase Manhattan Bank), as
          trustee, as heretofore and hereafter amended and supplemented and
          the Indenture of Mortgage and Deed of Trust, dated as of December
          1, 1992, between the Company and Bank of Montreal Trust Company,
          as trustee, as heretofore and hereafter amended and supplemented.

          Company Project:

               "Company Project" shall mean the interests in the Facilities
          previously sold by the City to the Company, pursuant to the
          Original Sale Agreements.

          Facilities:

               "Facilities" shall mean the systems and facilities for the
          reduction, abatement or prevention of pollution caused by the
          operation of the Plant which are described in Exhibit A hereto,
          as from time to time amended or modified, and related
          improvements.

          1954 Code:

               "1954 Code" shall mean the Internal Revenue Code of 1954, as
          amended.

          1977 Bonds:

               "1977 Bonds" shall mean the $32,500,000 aggregate principal
          amount of the City's Collateralized Pollution Control Revenue
          Bonds, 1977 Series A (Tucson Gas & Electric Company San Juan
          Project), all of which remain outstanding.

          1973 Bonds:

               "1973 Bonds" shall mean the $55,000,000 aggregate principal
          amount of the City's Pollution Control Revenue Bonds, Series 1973
          (Tucson Gas & Electric Company San Juan Project), of which
          $47,910,000 in principal amount remains outstanding.

          Ordinance:

               "Ordinance" shall mean Ordinance No. 97-1055 adopted by the
          City Council on April 17, 1997 creating and securing the Bonds,
          as modified, altered, amended or supplemented by any and all
          ordinances and resolutions supplemental thereto or amendatory
          thereof adopted by the City Council and effective prior to the
          initial issuance of the Bonds, including without limitation,
          Resolution No. 97-879 adopted by the City Council on April 17,
          1997 and any Supplemental Ordinances and related resolutions
          adopted thereafter by the City Council pursuant thereto.

          Original Sale Agreements:

               "Original Sale Agreements" shall mean the Series 1973
          Installment Sale Agreement and the Series 1977 Installment Sale
          Agreement.

          Outstanding:

               "Outstanding", when used in reference to the Bonds, shall
          mean, as at any particular date, the aggregate of all Bonds
          authenticated and delivered under the Ordinance except: 

                    (a)  those canceled by the Trustee at or prior to such
               date or delivered to or acquired by the Trustee at or prior
               to such date for cancellation; 

                    (b)  those deemed to be paid in accordance with Article
               VIII of the Ordinance; and

                    (c)  those in lieu of or in exchange or substitution
               for which other Bonds shall have been authenticated and
               delivered pursuant to the Ordinance, unless proof
               satisfactory to the Trustee and the Company is presented
               that such Bonds are held by a bona fide holder in due
               course.

          Permitted Encumbrances:

               "Permitted Encumbrances" shall mean and include (a) liens
          for taxes, assessments and other governmental charges not
          delinquent or which can be paid without penalty; (b) unfiled,
          inchoate mechanics' and materialmen's liens for construction work
          in progress; (c) workmen's, repairmen's warehousemen's and
          carriers' liens and other similar liens, if any, arising in the
          ordinary course of business; (d) all the following, if they do
          not individually or in the aggregate materially impair the use of
          the Facilities or materially detract from the value thereof to
          the Company, viz.: any easements, restrictions, mineral, oil, gas
          and mining rights and reservations, zoning laws and defects in
          title or other encumbrances to which the Facilities may be
          subject because of the installation thereof at the Plant; (e) any
          lien for the satisfaction and discharge of which a sum of money
          or a surety bond deemed adequate by the Trustee is on deposit
          with the Trustee; (f) the rights of the City and the Company
          under this Agreement and any prior or subsequent installment sale
          agreement or lease between the City and Company relating to all
          or any part of the Facilities and the issuance of revenue bonds
          in connection therewith; (g) the lien of the Company Mortgages
          and liens, encumbrances and defects of the character of the
          permitted encumbrances referred to therein; and (h) the Plant
          Agreements.

          Person:

               "Person" means (i) any corporation, limited liability
          company, partnership, joint venture, association, joint-stock
          company, business trust or unincorporated organization, in each
          case formed or organized under the laws of the United States of
          America, any state thereof or the District of Columbia, or (ii)
          the United States of America or any state thereof, or any
          political subdivision of either thereof, or any agency, authority
          or other instrumentality of any of the foregoing.  

          Plant:

               "Plant" shall mean Units 1 and 2 and related common
          facilities of the San Juan Generating Station, an electric power
          generating plant located northwest of and within fifteen miles of
          the corporate limits of the City in San Juan County, New Mexico,
          and not within the corporate limits of any municipality, and any
          additions or improvements thereto or replacements thereof.

          Plant Agreements:

               "Plant Agreements" shall mean all contracts relating to the
          ownership, construction and operation of the Plant, including the
          Facilities, as from time to time amended or supplemented.

          Prior Bonds:

               "Prior Bonds" shall mean the 1973 Bonds and the 1977 Bonds,
          collectively.

          Purchase Price Payments:

               "Purchase Price Payments" shall mean the payments required
          to be made by the Company pursuant to Section 5.02 hereof.

          Series 1973 Installment Sale Agreement:

               "Series 1973 Installment Sale Agreement" shall mean the
          Installment Sale Agreement, dated as of December 1, 1973, between
          the City, as Vendor, and Public Service Company of New Mexico
          (which has now been discharged therefrom) and the Company, as
          Vendees, as amended and supplemented pursuant to the terms
          thereof prior to the date hereof.

          Series 1977 Installment Sale Agreement:

               "Series 1977 Installment Sale Agreement" shall mean the
          Installment Sale Agreement, dated as of November 1, 1977, between
          the City, as Vendor, and the Company, as Vendee, as amended and
          supplemented pursuant to the terms thereof prior to the date
          hereof.

          Supplemental Ordinance:

               "Supplemental Ordinance" shall mean any ordinance or
          resolution adopted by the City Council and effective subsequent
          to the initial issuance of the Bonds modifying, altering,
          amending, supplementing or confirming the Ordinance or for any
          purpose, in accordance with the terms of the Ordinance, as such
          Supplemental Ordinance may be modified, altered, amended or
          supplemented by any and all ordinances and related resolutions of
          the City Council of the City adopted pursuant thereto.

          Tax Agreement:

               "Tax Agreement" shall mean that tax certificate and
          agreement, dated the date of the initial authentication and
          delivery of the Bonds, between the City and the Company, relating
          to the requirements of the Code and the 1954 Code, and any and
          all modifications, alterations, amendments and supplements
          thereto.

          Trustee:

               "Trustee" shall mean First Trust of New York, National
          Association, as trustee under the Ordinance, its successors in
          trust and their assigns.

               SECTION 1.02.  Incorporation of Certain Definitions by
          Reference.  Each capitalized term used herein and not otherwise
          defined herein shall have the meaning set forth in the Ordinance.


                                      ARTICLE II

                       REPRESENTATIONS, WARRANTIES AND FINDINGS

               SECTION 2.01.  Representations and Warranties of the City. 
          The City makes the following representations and warranties as
          the basis for the undertakings on the part of the Company
          contained herein:

                    (a)  The City is an incorporated municipality, a body
               politic and corporate, existing under the Constitution and
               laws of the State of New Mexico;

                    (b)   The City has the power to enter into this
               Agreement and to perform and observe the agreements and
               covenants on its part contained herein, including without
               limitation the power to issue and sell the Bonds as
               contemplated herein and in the Ordinance, and by proper
               corporate action has duly authorized the execution and
               delivery hereof;

                    (c)  The execution and delivery of this Agreement by
               the City do not, and consummation of the transactions
               contemplated hereby and fulfillment of the terms hereof by
               the City will not, result in a breach of any of the terms or
               provisions of, or constitute a default under, any ordinance,
               indenture mortgage, deed of trust or other agreement or
               instrument to which the City is now a party or by which it
               is now bound, or any order, rule or regulation applicable to
               the City of any court or of any regulatory body or
               administrative agency or other governmental body having
               jurisdiction over the City or over any of its properties, or
               the Constitution or laws of the State of New Mexico;

               SECTION 2.02.  Representations and Warranties of the
          Company.  The Company makes the following representations and
          warranties as the basis for the undertakings on the part of the
          City contained herein:

                    (a)  The Company is a corporation duly organized and
               existing in good standing under the laws of the State of
               Arizona and duly qualified as a foreign corporation in the
               State of New Mexico; 

                    (b)  The Company has power to enter into this Agreement
               and to perform and observe the agreements and covenants on
               its part contained herein and by proper corporate action has
               duly authorized the execution and delivery hereof; 

                    (c)  The execution and delivery of this Agreement by
               the Company do not, and consummation of transactions
               contemplated hereby and fulfillment of the terms hereof by
               the Company will not, result in a breach of any of the terms
               or provisions of, or constitute a default under, any
               ordinance, indenture mortgage, deed of trust or other
               agreement or instrument to which the Company is a party or
               by which it is now bound, or the Restated Articles of
               Incorporation or by-laws of the Company, or any order, rule
               or regulation applicable to the Company of any court or of
               any regulatory body or administrative agency or other
               governmental body having jurisdiction over the Company or
               over any of its properties, or any statute of any
               jurisdiction applicable to the Company; 

                    (d)  The Arizona Corporation Commission has approved
               all matters relating to the Company's participation in the
               transactions contemplated by this Agreement which require
               said approval, and no other consent, approval, authorization
               or other order of any regulatory body or administrative
               agency or other governmental body is legally required for
               the Company's participation therein, except such as may have
               been obtained or may be required under the securities laws
               of any jurisdiction;

                    (e)  The Facilities (i) are designed to meet applicable
               federal, state and local requirements for the control of
               pollution now in effect, (ii) are to be used to reduce,
               abate or prevent pollution and (iii) are located or are to
               be located in San Juan County within fifteen miles outside
               the corporate limits of the City and not within the
               corporate limits of any municipality;

                    (f)  All of the proceeds of the Bonds (exclusive of
               accrued interest, if any, to be paid by the initial
               purchasers of the Bonds upon delivery thereof) will be
               expended to refund the Prior Bonds;

                    (g)  The Company presently owns and undivided 50%
               interest in Unit 1 of the Plant and an undivided 50%
               interest in Unit 2 of the Plant.

                    (h)  With respect to the Facilities as of the date of
               execution and delivery of this Agreement, the Company has
               good and marketable title to its interest in such Facilities
               free and clear of all claims, liens and encumbrances, other
               than Permitted Encumbrances;

                    (i)  The Facilities consist of those facilities
               described in Exhibit A attached hereto, and so long as the
               Company owns an interest in the Facilities, the Company
               shall cause to be made, or consent to, no changes to the
               Facilities or to the operation thereof which would affect
               the qualification of the Facilities as pollution control
               facilities under the Act or impair the tax-exempt status of
               interest on the Bonds;

                    (j)  To the extent necessary to preserve the security
               for the Bonds, the validity of the Bonds under the Act and
               the tax-exempt status of interest on the Bonds, all material
               certificates, approvals, permits and authorizations with
               respect to the construction of the Facilities of applicable
               local, state and federal governmental agencies have been
               obtained, and the Facilities have been constructed and are
               in operation in all material respects in accordance with
               such certificates, approvals, permits and authorizations;
               and

                    (k)  The Company has used the proceeds of the Prior
               Bonds and the proceeds from the sale of any facilities
               financed with the Prior Bonds for purposes which are
               authorized by the Act and which would not adversely affect
               the exclusion from gross income for federal tax purposes of
               interest on the Prior Bonds or the exemption of interest on
               the Prior Bonds from State of New Mexico income taxation.

               SECTION 2.03.  Findings of the City.  The City hereby
          confirms its findings that its financing and refinancing of the
          Company's interest in the Facilities will serve the public
          purpose of the Act to protect and promote the health, welfare and
          safety of the citizens of the State of New Mexico and its habitat
          and wildlife, with the resultant higher level of employment and
          economic activity and stability.


                                     ARTICLE III

                     PRIOR CONVEYANCE TO THE CITY; THE FACILITIES

               SECTION 3.01.  Prior Conveyance to the City.  The Company
          and the City confirm that, pursuant to the Original Sale
          Agreements, the Company has heretofore sold and conveyed to the
          City, and the City has heretofore purchased and acquired from the
          Company, the Company's interest in the Facilities, subject only
          to Permitted Encumbrances.

               SECTION 3.02.  Revision of Plans and Specifications.  The
          Company may consent to one or more revisions to the plans and
          specifications for the Facilities (including without limitation
          any changes therein, additions thereto, substitutions therefor
          and deletions therefrom) in any respect; provided, however, that,
          if any such revision shall render inaccurate the description of
          the Facilities contained in Exhibit A hereto, the Company shall
          deliver to the City and the Trustee (a) a revised Exhibit A
          containing a description of the Facilities as revised, the
          accuracy of which shall have been certified by an Authorized
          Company Representative, and (b) an opinion of Bond Counsel to the
          effect that the Facilities as described in the revised Exhibit A
          are such that the expenditure of the proceeds of the Bonds
          pursuant to this Agreement will not, in and of itself, impair the
          validity of the Bonds under the Act or the exclusion from gross
          income for federal tax purposes of interest on the Bonds.  A
          revision of Exhibit A hereto pursuant to this Section 3.02 shall
          not constitute an amendment, change or modification of this
          Agreement within the meaning of Article XII of the Ordinance.

               SECTION 3.03.  Maintenance of Facilities; Remodeling; Notice
          of Damages.  The Company shall at all times exercise all of its
          rights, powers, elections and options under the Plant Agreements
          to cause the Facilities, and every element and unit thereof, to
          be maintained, preserved and kept in thorough repair, working
          order and condition and to cause all needful and proper repairs
          and renewals thereto to be made; provided, however, that the
          Company may exercise all of its rights, powers, elections and
          options under the Plant Agreements to cause the operation of the
          Facilities, or any element or unit thereof, to be discontinued
          if, in the judgment of the Company, it is no longer advisable to
          operate the same, or if the Company intends to sell or dispose of
          the same and within a reasonable time shall endeavor to
          effectuate such sale or disposition; provided further that prior
          to any such discontinuation, the Company shall furnish to the
          City and the Trustee a certificate executed by an Authorized
          Company Representative stating that the operation of the
          Facilities, or any element or unit thereof, is being discontinued
          and the reasons therefor.

               The Company may, subject to the provisions of Section 6.05
          hereof, at its own expense consent to the remodeling of the
          Facilities or to the making of such substitutions, modifications
          and improvements to the Facilities from time to time as it, in
          its discretion, may deem to be desirable for its uses and
          purposes, which remodeling, substitutions, modifications and
          improvements shall be included under the terms of this Agreement
          as part of the Facilities.  

               After the occurrence of any material damage or loss to the
          Facilities, if any Bonds are then Outstanding, the Company shall
          notify the City as to the nature and extent of such damages or
          loss and whether it is practicable and desirable to rebuild,
          repair, or restore such damage or loss.

               SECTION 3.04.  Insurance.  The Company shall exercise all of
          its rights, powers, elections and options under the Plant
          Agreements to keep the Facilities insured against fire, casualty,
          public liability and other risks to the extent usually insured
          against by companies owning and operating similar property, by
          reputable insurance companies or, at the Company's election, with
          respect to all or any element or unit of the Facilities, by means
          of an adequate insurance fund set aside and maintained by it out
          of its own earnings or in conjunction with other companies
          through an insurance fund, trust or other agreement or, by means
          of unfunded self-insurance as may be reasonable and customary by
          companies owning and operating similar property.  All proceeds of
          such insurance shall be for the account of the Company.  

               SECTION 3.05.  Condemnation; Eminent Domain.  (a)  In the
          event that title to or the temporary use of the Facilities, or
          any part thereof, shall be taken in condemnation or by the
          exercise of the power of eminent domain by any governmental body
          or by any person, firm or corporation acting under governmental
          authority, any proceeds received by the City from any award or
          awards in respect of the Facilities or any part thereof made in
          such condemnation or eminent domain proceedings, after payment of
          all expenses incurred in the collection thereof, shall to the
          extent of the Company's interest therein be paid for the account
          of the Company, and the City hereby assigns to the Company all of
          its right, title and interest in and to any claim for and rights
          with respect to any such condemnation award.

                    (b)  The City shall cooperate fully with the Company in
          the handling and conduct of any prospective or pending
          condemnation proceedings with respect to the Facilities or any
          part thereof.  In no event will the City voluntarily settle or
          consent to the settlement of any prospective or pending
          condemnation proceedings with respect  to the Facilities or any
          part thereof without the written consent of the Company  and the
          City will, at the request of the Company, accept a sum in payment
          therefor at any stage of the condemnation proceedings which the
          Company shall certify to the City to be fair.  Unless and until
          such a request is made by the Company, the City will take or
          cause to be taken all actions necessary to obtain the award of
          fair compensation for the taking and the collecting thereof.

                    (c)  The Company shall be entitled to the entire
          proceeds of any condemnation award or portion thereof made for
          damages to or takings of its own property other than the
          Facilities.


                                      ARTICLE IV

                           ISSUANCE AND SALE OF THE BONDS;
                         DISPOSITION OF PROCEEDS OF THE BONDS

               SECTION 4.01.  Issuance of the Bonds.  The City shall issue
          the Bonds under and in accordance with the Ordinance subject to
          the provisions of the bond purchase agreement among the City, the
          initial purchaser or purchasers of the Bonds and the Company. 
          The Company hereby approves the issuance of the Bonds and all
          terms and conditions thereof.  

               SECTION 4.02.  Issuance of Other Obligations.  The City and
          the Company expressly reserve the right to enter into, to the
          extent permitted by law, but shall not be obligated to enter
          into, an agreement or agreements other than this Agreement with
          respect to the issuance by the City, under an ordinance or
          ordinances other than the Ordinance, of obligations to provide
          additional funds to pay the cost of construction of the
          Facilities or obligations to refund all or any principal amount
          of the Bonds, or any combination thereof.  

               SECTION 4.03.  Disposition of Bond Proceeds.  The City and
          the Company shall enter into escrow arrangements with the trustee
          for each series of Prior Bonds and shall cause a portion of the
          proceeds of the Bonds in amount equal to (i) the proceeds of the
          Bonds, other than accrued interest, if any, paid by the initial
          purchaser or purchasers thereof, multiplied by the ratio
          determined by multiplying outstanding principal amount of such
          series of Prior Bonds by the aggregate outstanding principal
          amount of the Prior Bonds, to be deposited in escrow with such
          trustee to be applied to the payment of such series of Prior
          Bonds upon the redemption thereof.

               The City shall establish the Bond Fund with the Trustee in
          accordance with Section 4.01 of the Ordinance.  The accrued
          interest, if any, paid by the initial purchasers of the Bonds
          shall be deposited into the Bond Fund.

               SECTION 4.04.  Investment of Moneys in Funds and Accounts. 
          The Company and the City agree that any moneys held in any fund
          or account created by the Ordinance shall be invested as provided
          in the Ordinance.


                                      ARTICLE V

                               PURCHASE BY THE COMPANY;
                      PURCHASE PRICE PAYMENTS; OTHER OBLIGATIONS

               SECTION 5.01.  Prior Purchase by the Company.  The City and
          the Company confirm that pursuant to the Original Sale
          Agreements, the City has heretofore sold and conveyed  to the
          Company, without warranty of any kind whatsoever, and the Company
          confirms that it has purchased and acquired from the City, the
          interest in the Facilities acquired by the City as described in
          Section 3.01 hereof.  The parties hereto agree that
          notwithstanding anything to the contrary in the Original Sale
          Agreements, effective as of the date of initial issuance of the
          Bonds the respective purchase prices for the interest in the
          Facilities shall be the purchase price payments set forth in
          Section 5.02 hereof.

               SECTION 5.02. Purchase Price Payments.  As the purchase
          price to be paid by the Company for the interest in the
          Facilities which comprise the Company Project, the Company shall
          pay, or cause to be paid, to the Trustee for the account of the
          City an amount equal to the aggregate principal amount of the
          Bonds from time to time Outstanding and, as interest on such
          amount, an amount equal to premium, if any, and interest on such
          Bonds, such amounts to be paid in installments due on the dates,
          in the amounts and in the manner provided in the Ordinance for
          the City to cause amounts to be deposited in the Bond Fund for
          the timely payment of the principal of and premium, if any, and
          interest on the Bonds whether at stated maturity, upon redemption
          or acceleration or otherwise; provided, however, that the
          obligation of the Company to make any such payment hereunder
          shall be reduced by the amount of any reduction under Section
          2.12 and Section 3.05 of the Ordinance of the amount of the
          corresponding payment required to be made by the City thereunder.

               SECTION 5.03.  Payments Pledged and Assigned; Obligation
          Absolute.  It is understood and agreed that all Purchase Price
          Payments are, by the Ordinance, to be pledged by the City to the
          Trustee, and that all rights and interest of the City hereunder
          (except for the City's rights under Sections 5.04, 5.05, 6.03 and
          8.05 hereof and any rights of the City to receive notices,
          certificates, requests, requisitions and other communications
          hereunder) are to be pledged and assigned to the Trustee.  The
          Company assents to such pledge and assignment and agrees that the
          obligation of the Company to make the Purchase Price Payments and
          the other charges payable hereunder shall be absolute,
          irrevocable and unconditional and shall not be subject to
          cancellation, termination or abatement, or to any defense other
          than payment or to any right of set-off, counterclaim or
          recoupment arising out of any breach by the City or the Trustee
          or any other party under this Agreement, the Ordinance or
          otherwise, or out of any obligation or liability at any time
          owing to the Company by the City, the Trustee or any other party,
          and, further, that the Purchase Price Payments and the other
          payments due and charges payable hereunder shall continue to be
          payable at the times and in the amounts herein and therein
          specified, whether or not the Facilities, or any portion thereof,
          shall have been completed or shall have been destroyed by fire or
          other casualty, or title thereto, or the use thereof, shall have
          been taken by the exercise of the power of eminent domain, and
          that there shall be no abatement of or diminution in any such
          payments by reason thereof, whether or not the Facilities shall
          be used or useful, whether or not any applicable laws,
          regulations or standards shall prevent or prohibit the use of the
          Plant or the Facilities, or for any other reason, all of the
          foregoing being subject, however, to the provisions of Sections
          6.01 and 7.02 hereof.

               SECTION 5.04.  Payment of Expenses.  (a)  The Company shall
          pay all Administration Expenses, including, without limitation,
          Administration Expenses incurred at and subsequent to the time
          the Bonds are deemed to have been paid in accordance with Article
          VIII of the Ordinance.  The payment of the compensation and the
          reimbursement of expenses and advances of the Trustee, of the
          paying agent, any co-paying agent and the registrar under the
          Ordinance shall be made directly to such entities.

                    (b)  The City may submit to the Company periodic
          statements, not more frequently than monthly, for the reasonable
          value of services of any City employees utilized, and the full
          amount of any City expenses incurred, by the City in connection
          with the performance or attainment by the City of its obligations
          and rights under or pursuant to the Ordinance, the Bonds or this
          Agreement, and the Company shall make payment to the City of the
          full amount of each such statement within thirty (30) days after
          the Company receives such statement, provided that the Company
          within such thirty (30) day period may in writing and in good
          faith specifically protest all or any portion of the amounts
          included in such statement and in such event the Company shall
          not be obligated to make payment to the City of the amount which
          has been protested in such manner until ten (10) days after such
          protest shall have been resolved either by agreement between the
          City and the Company or by an appropriate tribunal.  The Company
          agrees that the provisions of this Section 5.04 shall survive the
          payment, redemption or defeasance of the Bonds.

               SECTION 5.05.  Indemnification.  The Company releases the
          City and the Trustee from, and covenants and agrees that neither
          the City nor the Trustee shall be liable for, and covenants and
          agrees, to indemnify and hold harmless the City and the Trustee
          and their officers (including members of the City Council),
          employees and agents from and against, any and all losses,
          claims, damages, liabilities (including, without limitation,
          those resulting from any environmental laws), taxes (including,
          without limitation, gross receipts taxes but, with respect to the
          Trustee, not including taxes owing in the ordinary course of
          business), or expenses, of every conceivable kind, character and
          nature whatsoever arising out of, resulting from or in any way
          connected with (1) the Facilities or the conditions, occupancy,
          use, possession, conduct or management of, or work done in or
          about, or from the planning, design, acquisition, installation or
          construction of the Facilities or any part thereof, except for
          those arising out of the activities described in Section 56-7-1 A
          or B, N.M.S.A. 1978, or in Section 56-7-2 A or B, N.M.S.A. 1978,
          to the extent such Sections are applicable; (2) the issuance of
          any Bonds or any certifications or representations made in
          connection therewith and the carrying out of any of the
          transactions contemplated by the Bonds, the Ordinance and this
          Agreement; (3) the Trustee's acceptance or administration of the
          trusts under the Ordinance; or (4) any untrue statement or
          alleged untrue statement of any material fact or omission or
          alleged omission to state a material fact necessary to make the
          statements made, in light of the circumstances under which they
          were made, not misleading, in any official statement or other
          offering circular utilized by the City or any underwriter or
          placement agent in connection with the sale of any Bonds;
          provided that such indemnity shall not be required for losses,
          claims, damages, liabilities or expenses that result from, in the
          case of parties other than the City, negligence or from willful
          misconduct on the part of the party seeking such indemnity.  The
          indemnity of the Trustee and the City required by this Section
          shall be only to the extent that any loss sustained by the
          Trustee or the City, as the case may be, exceeds the net proceeds
          the Trustee or the City, as the case may be, receives from any
          insurance carried with respect to the loss sustained.  The
          Company further covenants and agrees, to the extent permitted by
          law, to pay or to reimburse the City and the Trustee and their
          officers, employees and agents for any and all reasonable costs,
          attorneys fees and expenses, liabilities or expenses incurred in
          connection with investigating, defending against or otherwise in
          connection with any such losses, claims, damages, liabilities,
          expenses or actions, except to the extent that the same arise out
          of the negligence or willful misconduct of the party claiming
          such payment or reimbursement.  The provisions of this Section
          shall survive the retirement of the Bonds or resignation or
          removal of the Trustee.

               SECTION 5.06.  Payment of Taxes; Discharge of Liens.  The
          Company shall: (a) pay, or make provision for payment of, all
          lawful taxes and assessments, including income, profits, property
          or excise taxes, if any, or other municipal or governmental
          charges, levied or assessed by any federal, state or municipal
          government or political body upon the Facilities or any part
          thereof or upon the City with respect to the Purchase Price
          Payments, when the same shall become due; and (b) pay or cause to
          be satisfied and discharged or make adequate provision to satisfy
          and discharge, within sixty (60) days after the same shall
          accrue, any lien or charge upon the Purchase Price Payments, and
          all lawful claims or demands for labor, materials, supplies or
          other charges which, if unpaid, might be or become a lien upon
          such amounts, except Permitted Encumbrances; provided, that, if
          the Company shall first notify the City and the Trustee of its
          intention so to do, the Company may in good faith contest any
          such lien or charge or claims or demands in appropriate legal
          proceedings, and in such event may permit the items so contested
          and identified as such by the Company to remain undischarged and
          unsatisfied during the period of such contest and any appeal
          therefrom, unless the Trustee shall notify the Company in writing
          that, in the opinion of counsel to the Trustee, based upon
          material facts disclosed to the Trustee without any duty of
          investigation, by nonpayment of any such items the lien of the
          Ordinance as to the Purchase Price Payments will be materially
          endangered, in which event the Company shall promptly pay and
          cause to be satisfied and discharged all such unpaid items.  The
          City shall cooperate fully with the Company in any such contest.


                                      ARTICLE VI

                                  SPECIAL COVENANTS

               SECTION 6.01.  Maintenance of Corporate Existence.  Except
          as permitted in this Section 6.01, the Company shall maintain its
          corporate existence, shall not sell, transfer or otherwise
          dispose of all of its assets, as or substantially as an entirety,
          and shall not consolidate with or merge with or into another
          corporation.  The Company may consolidate with or merge into
          another corporation incorporated under the laws of the United
          States of America, any state thereof or the District of Columbia,
          or sell, transfer or otherwise dispose of all of its assets, as
          or substantially as an entirety, to any Person, if the surviving
          or resulting corporation (if other than the Company) or the
          transferee Person, as the case may be, prior to or simultaneously
          with such merger, consolidation, sale, transfer or other
          disposition, assumes, by delivery to the Trustee and the City of
          an instrument in writing satisfactory in form to the Trustee and
          the City, all the obligations of the Company under this
          Agreement, including without limitation the obligations of the
          Company under Section 5.02 hereof.  Upon such an assumption
          following any such sale, transfer or other disposition of assets,
          the Company shall be released and discharged from all liability
          in respect of all obligations under this Agreement. 
          Notwithstanding the foregoing, in the case of any such sale,
          transfer or other disposition of assets, which do not include the
          Facilities, the Company shall remain liable in respect of all
          obligations under this Agreement other than the obligations under
          Section 5.02 hereof, and the transferee shall not be required to
          assume any obligations hereunder other than the obligations under
          Section 5.02 hereof; provided, however, that the transferee shall
          be required to assume all such other obligations unless the
          Company shall have delivered to the City and the Trustee an
          opinion of Bond Counsel to the effect that the non-assumption by
          the transferee of such other obligations will not impair the
          validity under the Act of the Bonds and will not adversely affect
          the exclusion from gross income for federal tax purposes of
          interest on the Bonds.

               If consolidation, merger or sale, transfer or other
          disposition is made as permitted by this Section 6.01, the
          provisions of this Section 6.01 shall continue in full force and
          effect and no further consolidation, merger or sale or other
          transfer or other disposition shall be made except in compliance
          with the provisions of this Section 6.01.  
               Anything in this Agreement to the contrary notwithstanding,
          the sale, transfer or other disposition by the Company of all of
          its facilities (a) for the generation of electric energy, (b) for
          the transmission of electric energy or (c) for the distribution
          of electric energy, in each case considered alone, or all of its
          facilities described in clauses (a) and (b), considered together,
          or all of its facilities described in clauses (b) and (c),
          considered together, shall in no event be deemed to constitute a
          sale, transfer or other disposition of all the properties of the
          Company, as or substantially as an entirety, unless, immediately
          following such sale, transfer or other disposition, the Company
          shall own no properties in the other such categories of property
          not so sold, transferred or otherwise disposed of.  The character
          of particular facilities shall be determined by reference to the
          Uniform System of Accounts prescribed for public utilities and
          licensees subject to the Federal Power Act, as amended, to the
          extent applicable.

               SECTION 6.02.  Permits or Licenses.  In the event that it
          may be necessary for the proper performance of this Agreement on
          the part of the Company or the City that any application or
          applications for any permit or license to do or to perform
          certain things be made to any governmental or other agency by the
          Company or the City, the Company and the City each shall, upon
          the request of either, execute such application or applications. 


               SECTION 6.03.  City's Access to Facilities.  The City shall
          have the right, upon appropriate prior notice to the Company, to
          have reasonable access to the Facilities during normal business
          hours for the purpose of making examinations and inspections of
          the same.  

               SECTION 6.04.  Tax-Exempt Status of Interest on Bonds.
          (a)  It is the intention of the parties hereto that interest on
          the Bonds shall be and remain tax-exempt, and to that end the
          covenants and agreements of the City and the Company in this
          Section 6.04 and the Tax Agreement are for the benefit of the
          Owners from time to time of the Bonds.

                    (b)  The City covenants and agrees that it will not
          take or omit to take any action reasonably within its control
          that will cause the Bonds to be "arbitrage bonds" within the
          meaning of Section 148 of the Code or otherwise subject to
          federal income taxation by reason of Section 103 and Section 141
          through 150 of the Code or Section 103 of the 1954 Code and Title
          XIII of the Tax Reform Act of 1986, as applicable, and any
          applicable regulations promulgated thereunder.  To such end, the
          City covenants to the extent reasonably within its control to
          comply with all covenants set forth in the Tax Agreement, which
          is hereby incorporated by reference as though fully set forth
          herein.

                    (c)  The Company covenants and agrees for the benefit
          of the Owners from time to time of the Bonds that it will not
          directly or indirectly use or permit the use of (to the extent
          within its control) the proceeds of any of the Bonds or any other
          funds, or take or omit to take any action, if and to the extent
          such use, or the taking or omission to take such action, would
          cause any of the Bonds to be "arbitrage bonds" within the meaning
          of Section 148 of the Code or otherwise subject to federal income
          taxation by reason of Section 103 and 141 through 150 of the Code
          or Section 103 of the 1954 Code and Title XIII of the Tax Reform
          Act of 1986, as applicable, and any applicable regulations
          promulgated thereunder.  To such ends, the Company will comply
          with all requirements of such Section 148 to the extent
          applicable to the Bonds.  In the event that at any time the
          Company is of the opinion that for purposes of this Section
          6.04(c) it is necessary to restrict or limit the yield on the
          investment of any moneys held by the Trustee under the Ordinance,
          the Company shall so notify the Trustee in writing.

                    Without limiting the generality of the foregoing, the
          Company agrees that there shall be paid from time to time all
          amounts required to be rebated to the United States of America
          pursuant to Section 148(f) of the Code and any applicable
          Treasury Regulations.  This covenant shall survive payment in
          full or defeasance of the Bonds and the satisfaction and
          discharge of the Ordinance.  The Company specifically covenants
          to pay or cause to be paid the Rebate Requirement as defined and
          described in the Tax Agreement.

                    (d)  The Company certifies and represents that it has
          not taken or (to the extent within its control) permitted to be
          taken, and the Company covenants and agrees that it will not take
          or (to the extent within its control) permit to be taken any
          action which will cause the interest on the Bonds to become
          includable in gross income for federal income tax purposes;
          provided, however, that neither the Company nor the City shall be
          deemed to have violated the covenants set forth in this Section
          6.04 if the interest on any of the Bonds becomes taxable to a
          person solely because such person is a "substantial user" of the
          Project or a "related person" within the meaning of Section
          103(b)(13) of the 1954 Code and provided, further, that none of
          the covenants and agreements herein contained shall require
          either the Company or the City to enter an appearance or
          intervene in any administrative, legislative or judicial
          proceeding in connection with any changes in applicable laws,
          rules or regulations or in connection with any decisions of any
          court or administrative agency or other governmental body
          affecting the taxation of interest on the Bonds.  The Company
          acknowledges having read Section 7.08 of the Ordinance and agrees
          to perform all duties imposed on it by such Section 7.08, by this
          Section and by the Tax Agreement.  Insofar as Section 7.08 of the
          Ordinance and the Tax Agreement impose duties and
          responsibilities on the Company, they are specifically
          incorporated herein by reference.

                    (e)  Notwithstanding any provision of this Section 6.04
          and Section 7.08 of the Ordinance, if the Company shall provide
          to the City and the Trustee an opinion of Bond Counsel to the
          effect that any specified action required under this Section 6.04
          and Section 7.08 of the Ordinance is no longer required or that
          some further or different action is required to maintain the tax-
          exempt status of interest on the Bonds, the Company, the Trustee
          and the City may conclusively rely upon such opinion in complying
          with the requirements of this Section 6.04, and the covenants
          hereunder shall be deemed to be modified to that extent.

               SECTION 6.05.  Use of Facilities.  So long as any Bonds are
          Outstanding and the Facilities are operated by or for the benefit
          of the Company, the Company shall exercise all of its rights,
          powers, elections and options under the Plant Agreements to cause
          the Facilities to be used for purposes contemplated by the Act
          and in the Tax Agreement.

               SECTION 6.06.  Financing Statements.  The Company shall file
          and record, or cause to be filed and recorded, all financing
          statements and continuation statements referred to in Section
          7.07 of the Ordinance.

               SECTION 6.07.  No Warranties.  The City makes no warranty,
          either express or implied, with respect to the Facilities as a
          whole or with respect to any item or portion of the Facilities. 
          Without limiting the effect of the preceding sentence, it is
          expressly agreed that in connection with the sale or conveyance
          pursuant to Section 5.01 of this Agreement (a) the City make no
          warranty that the title conveyed shall be good or that its
          transfer is rightful or that the goods shall be delivered free
          from any security interest or other lien or encumbrance, (b) the
          City makes NO WARRANTY OF MERCHANTABILITY, and (c) THERE ARE NO
          WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE
          HEREOF.

               SECTION 6.08.  Quiet Enjoyment.  The City covenants that the
          Company, upon observing and performing the terms, conditions and
          covenants on the Company's part to be observed and performed
          under this Agreement, shall peaceably and quietly have, hold and
          enjoy the Company Project as purchaser in possession, free from
          molestation, hindrance, eviction or disturbance by the City or by
          any other person or persons claiming the same by, through or
          under the City.

               SECTION 6.09.  Additional Payments by Company Concerning the
          Facilities.  In addition to the payments provided for in Section
          5.02 and Section 5.04 hereof, the Company will pay, or will
          exercise all of its rights, powers, elections and options under
          the Plant Agreements to cause to be paid, as applicable, all of
          the expenses of operation of the Facilities, including, without
          limitation, the cost of all necessary and proper repairs,
          replacements and renewals made pursuant to Section 3.03 hereof
          and premiums for insurance pursuant to Section 3.04 hereof.

               SECTION 6.10  Qualification in New Mexico.  The Company
          agrees that throughout the term of this Agreement it, or any
          successor or assignee as permitted by Section 6.01 or Section
          7.02 hereof, will be qualified to do business in the State of New
          Mexico.


                                     ARTICLE VII

                           ASSIGNMENT, LEASING AND SELLING

               SECTION 7.01.  By the City.  Except as provided in Article V
          of this Agreement, the City will not sell, lease, assign,
          transfer, convey or otherwise dispose of its interest in the
          Facilities or any portion thereof or interest therein or in the
          revenues therefrom without the written consent of the Company,
          nor will it create or suffer to be created any debt, lien or
          charge thereon, not consented to by the Company, except Permitted
          Encumbrances.

               SECTION 7.02.  By the Company.  The Company's interest in
          this Agreement may be assigned as a whole or in part, and its
          interest in the Facilities may be leased, sold, transferred or
          otherwise disposed of by the Company as a whole or in part
          (whether an interest in a specific element or unit or an
          undivided interest), to any Person; provided, however, that no
          such assignment, lease, sale, transfer or other disposition (a)
          shall relieve the Company from its primary liability for its
          obligations under Section 5.02 hereof or (b) shall be made unless
          the assignee, lessee, purchaser or other transferee, as the case
          may be, prior to or simultaneously with such assignment, lease,
          sale, transfer or other disposition, assumes, by delivery of an
          instrument to the Trustee and the City of an instrument in
          writing satisfactory in form to the Trustee, all other
          obligations of the Company hereunder to the extent of the
          interest assigned, leased, sold, transferred or otherwise
          disposed of, and the Company shall be released of and discharged
          from such obligations to the extent so assumed.  Notwithstanding
          the foregoing, (a) if (i) the Company's interest in this
          Agreement shall be assigned as a whole or in undivided part, (ii)
          the Company's interest in the Facilities shall be leased as a
          whole or in undivided part and the term of such leasehold or the
          term of any extension or extensions thereof at the option of the
          Company shall extend beyond the maturity date of the Bonds or
          (iii) the Company's interest in the Facilities shall be sold,
          transferred or otherwise disposed of as a whole or in undivided
          part, and (b) if the assignee, lessee, purchaser or other
          transferee shall assume the obligations of the Company under
          Section 5.02 hereof for the remaining term of this Agreement, to
          the extent of such assignment, lease, sale, transfer or other
          disposition, the Company shall be released from and discharged of
          all liability in respect of such obligations to the extent so
          assumed (but only to such extent); provided, however, that the
          release and discharge of the Company pursuant to clause (b) shall
          be conditioned upon delivery by the Company to the City and the
          Trustee of a certificate of an Independent Expert (as hereinafter
          defined) describing the interests so assigned, leased, sold,
          transferred or otherwise disposed of, together with all other
          rights, interests, assets and/or properties assigned, leased,
          sold, transferred or otherwise disposed of by the Company to the
          same Person in the same or a related transaction, stating that
          such rights, interests, assets and/or properties so described
          constitute facilities for the generation, transmission  and/or
          distribution of electric energy and stating that, in the opinion
          of such Independent Expert, the Fair Value (as hereinafter
          defined) of such rights, interests, assets and/or properties to
          the Person acquiring the same is not less than an amount equal to
          10/7 of the sum of (x) the aggregate principal amount of the
          Bonds then Outstanding and (y) the outstanding principal amount
          of all other obligations of the Company representing indebtedness
          for borrowed money or for the deferred purchase price of property
          which are being assumed by such Person; and provided, further,
          that after any such assumption, release and discharge as
          aforesaid, the Company may again assume such obligations under
          Section 5.02 hereof, in whole or in part, at any time and from
          time to time, and, to the extent of any such assumption by the
          Company (but only to such extent), the aforesaid assignee,
          lessee, purchaser or other transferee shall be released from and
          discharged of all liability in respect of such obligations.

               Anything herein to the contrary notwithstanding, the Company
          shall not make any assignment, lease or sale as provided in the
          immediately preceding paragraph unless it shall have furnished to
          the City and the Trustee an opinion of Bond Counsel to the effect
          that the proposed assignment, lease or sale will not impair the
          validity under the Act of the Bonds and will not adversely affect
          the exclusion from gross income for federal tax purposes of
          interest on the Bonds.

               After any lease, sale, transfer or other disposition of any
          element or unit of the Facilities, or any interest therein, the
          Company may, at its option, cause such element or unit, or
          interest therein, to no longer be deemed to be part of the
          Facilities for the purposes of this Agreement by delivering to
          the City and the Trustee the agreements or other documents
          required pursuant to Section 7.03 hereof together with an
          instrument signed by an Authorized Company Representative stating
          that such element or unit, or interest therein, shall no longer
          be deemed to be part of the Facilities for the purposes of this
          Agreement.  

               For purposes of this Section 7.02:

                    (a)  "Independent Expert" means a Person which (i) is
          an engineer, appraiser or other expert and which, with respect to
          any certificate to be delivered pursuant to this Section, is
          qualified to pass upon the matter set forth in such certificate
          and (ii)(A) is in fact independent, (B) does not have any direct
          material financial interest in the transferee or in any obligor
          upon the Bonds or under this Agreement or in any affiliate of the
          transferee or any such obligor, (C) is not connected with the
          transferee or any such obligor as an officer, employee, promoter,
          underwriter, trustee, partner, director or any person performing
          similar functions and (D) is approved by the Trustee in the
          exercise of reasonable care; for purposes of this definition
          "engineer" means a Person engaged in the engineering profession
          or otherwise qualified to pass upon engineering matters
          (including, but not limited to, a Person licensed as a
          professional engineer, whether or not then engaged in the
          engineering profession); and for purposes of this definition
          "appraiser" means a Person engaged in the business of appraising
          property or otherwise qualified to pass upon the Fair Value or
          fair market value of property.

                    (b)  "Fair Value" means the fair value of the
          interests, rights, assets and/or properties assigned, leased,
          sold, transferred or otherwise disposed of (but, in the case of a
          lease, only to the extent of such lease) as may be determined by
          reference to (i) except in the case of a lease, the amount which
          would be likely to be obtained in an arm's-length transaction
          with respect to such interests, rights, assets and/or properties
          between an informed and willing buyer and an informed and willing
          seller, under no compulsion, respectively, to buy or sell, (ii)
          in the case of a lease, the amount (discounted to present value
          at a rate not lower than the taxable equivalent of the yield to
          maturity of the Bonds based on prevailing market prices
          immediately prior to the first public announcement of the
          proposed transaction) which would be likely to be obtained in an
          arm's-length transaction with respect to such interests, rights,
          assets and/or properties between an informed and willing lessee
          and an informed and willing lessor, neither under any compulsion
          to lease; (iii) the amount of investment with respect to such
          interests, rights, assets and/or properties which, together with
          a reasonable return thereon, would be likely to be recovered
          through ordinary business operations or otherwise, (iv) the cost,
          accumulated depreciation and replacement cost with respect to
          such interests, rights, assets and/or properties and/or (v) any
          other relevant factors; provided, however, that (x) Fair Value
          shall be determined without deduction for any mortgage, deed of
          trust, pledge, security interest, encumbrance, lease,
          reservation, restriction, servitude, charge or similar right or
          any other lien of any kind and (y) the Fair Value to the
          transferee of any property shall not reflect any reduction
          relating to the fact that such property may be of less value to a
          Person which is not the owner, lessee or operator of the property
          or any portion thereof than to a Person which is such owner,
          lessee or operator.  Fair Value may be determined, without
          physical inspection, by the use of accounting and engineering
          records and other data maintained by the Company or the
          transferee or otherwise available to the Expert certifying the
          same.

               SECTION 7.03.  Instrument Furnished to the City and Trustee. 
          The Company shall, within fifteen (15) days after the delivery
          thereof, furnish to the City and the Trustee a true and complete
          copy of the agreements or other documents effectuating any such
          assignment, lease, sale, transfer or other disposition.  

               SECTION 7.04.  Limitation.  This Agreement shall not be
          assigned nor shall the Facilities be leased, sold, transferred or
          otherwise disposed of, in whole or in part, except as provided in
          this Article VII or in Section 6.01 or 5.03 hereof.  This Article
          VII shall not apply to any sale, transfer or other disposition by
          the Company of all of its assets, as or substantially as an
          entirety, as contemplated in Section 6.01.


                                     ARTICLE VIII

                            EVENTS OF DEFAULT AND REMEDIES

               SECTION 8.01.  Events of Default.  Each of the following
          events shall constitute and is referred to in this Agreement as
          an "Event of Default": 

                    (a)  a failure by the Company to make any Purchase
               Price Payment, which failure shall have resulted in an
               "Event of Default" under clause (a) or (b) of Section 9.01
               of the Ordinance;

                    (b)  a failure by the Company to pay when due any other
               amount required to be paid under this Agreement or to
               observe and perform any covenant, condition or agreement on
               its part to be observed or performed (other than a failure
               described in clause (a) above), which failure shall continue
               for a period of sixty (60) days after written notice,
               specifying such failure and requesting that it be remedied,
               shall have been given to the Company by the City or the
               Trustee, unless the City and the Trustee shall agree in
               writing to an extension of such period prior to its
               expiration; provided, however, that the City and the Trustee
               shall be deemed to have agreed to an extension of such
               period if corrective action is initiated by the Company
               within such period and is being diligently pursued; or 

                    (c)  the dissolution or liquidation of the Company, or
               failure by the Company promptly to lift any execution,
               garnishment or attachment of such consequence as will impair
               its ability to make any payments under this Agreement, or
               the entry of an order for relief by a court of competent
               jurisdiction in any proceeding for its liquidation or
               reorganization under the provisions of any bankruptcy act or
               under any similar act which may be hereafter enacted, or an
               assignment by the Company for the benefit of its creditors,
               or the entry by the Company into an agreement of composition
               with its creditors (the term "dissolution or liquidation of
               the Company," as used in this clause, shall not be construed
               to include the cessation of the corporate existence of the
               Company resulting either from a merger or consolidation of
               the Company into or with another corporation or a
               dissolution or liquidation of the Company following a
               transfer of all or substantially all its assets, as or
               substantially as an entirety, under the conditions
               permitting such actions contained in Section 6.01 hereof).  

               SECTION 8.02.  Force Majeure.  The provisions of Section
          8.01 hereof are subject to the following limitations: if by
          reason of acts of God; strikes, lockouts or other industrial
          disturbances; acts of public enemies; orders of any kind of the
          government of the United States or of the State of New Mexico, or
          any department, agency, political subdivision, court or official
          of any of them, or any civil or military authority;
          insurrections; riots; epidemics; landslides; lightning;
          earthquakes; volcanoes; fires; hurricanes; tornadoes; storms;
          floods; washouts; droughts; arrests; restraint of government and
          people; civil disturbances; explosions; breakage or accident to
          machinery; partial or entire failure of utilities; or any cause
          or event not reasonably within the control of the Company, the
          Company is unable in whole or in part to carry out any one or
          more of its agreements or obligations contained herein, other
          than its obligations under Sections 5.02, 5.04, 5.06, and 6.01
          hereof, the Company shall not be deemed in default by reason of
          not carrying out said agreement or agreements or performing said
          obligation or obligations during the continuance of such
          inability.  The Company shall make reasonable effort to remedy
          with all reasonable dispatch the cause or causes preventing it
          from carrying out its agreements; provided, that the settlement
          of strikes, lockouts and other industrial disturbances shall be
          entirely within the discretion of the Company, and the Company
          shall not be required to make settlement of strikes, lockouts and
          other industrial disturbances by acceding to the demands of the
          opposing party or parties when such course is in the judgment of
          the Company unfavorable to the Company.  Any failure of the
          Company to perform its obligations under Sections 5.02, 5.04,
          5.06 and 6.01 hereof shall constitute an Event of Default
          hereunder regardless of the reason for such failure to perform.

               SECTION 8.03.  Remedies.  (a)  Upon the occurrence and
          continuance of any Event of Default described in clause (a) of
          Section 8.01 hereof, and further upon the condition that, in
          accordance with the terms of the Ordinance, the Bonds shall have
          been declared to be immediately due and payable pursuant to any
          provision of the Ordinance, the Purchase Price Payments shall,
          without further action, become and be immediately due and
          payable.  
                    Any waiver of any "Event of Default" under the
               Ordinance and a rescission and annulment of its consequences
               shall constitute a waiver of the corresponding Event or
               Events of Default under this Agreement and a rescission and
               annulment of the consequences thereof.  

                    (b)  Upon the occurrence and continuance of any Event
               of Default, the City, or the Trustee with respect to the
               rights of the City assigned to the Trustee by the Ordinance,
               may take any action at law or in equity to collect any
               payments then due and thereafter to become due, or to
               enforce performance and observance of any obligation,
               agreement or covenant of the Company hereunder.  

                    (c)  Any amounts collected by the Trustee from the
               Company pursuant to this Section 8.03 shall be applied in
               accordance with the Ordinance.

               SECTION 8.04.  No Remedy Exclusive.  No remedy conferred
          upon or reserved to the City hereby is intended to be exclusive
          of any other available remedy or remedies, but each and every
          such remedy shall be cumulative and shall be in addition to every
          other remedy given hereunder or now or hereafter existing at law
          or in equity or by statute.  No delay or omission to exercise any
          right or power accruing upon any default shall impair any such
          right or power or shall be construed to be a waiver thereof, but
          any such right or power may be exercised from time to time and as
          often as may be deemed expedient.  In order to entitle the City
          to exercise any remedy reserved to it in this Article VIII, it
          shall not be necessary to give any notice, other than such notice
          as may be herein expressly required.

               SECTION 8.05.  Reimbursement of Attorneys' and Agents' Fees. 
          If the Company shall default under any of the provisions hereof
          and the City or the Trustee shall employ attorneys or agents or
          incur other reasonable expenses for the collection of payments
          due hereunder or for the enforcement of performance or observance
          of any obligation or agreement on the part of the Company
          contained herein, the Company will on demand therefor reimburse
          the City or the Trustee and any predecessor Trustee, as the case
          may be, for the reasonable fees of such attorneys or agents and
          such other reasonable expenses so incurred.  

               SECTION 8.06.  Waiver of Breach.  In the event any
          obligation created hereby shall be breached by either of the
          parties and such breach shall thereafter be waived by the other
          party, such waiver shall be limited to the particular breach so
          waived and shall not be deemed to waive any other breach
          hereunder.  In view of the assignment of certain of the City's
          rights and interest hereunder to the Trustee, the City shall have
          no power to waive any breach hereunder by the Company in respect
          of such rights and interest without the consent of the Trustee,
          and the Trustee may exercise any of the rights of the City
          hereunder.  


                                      ARTICLE IX

                        PREPAYMENT OF PURCHASE PRICE PAYMENTS;
                                 REDEMPTION OF BONDS

               SECTION 9.01.  Prepayment of Purchase Price Payments;
          Redemption of Bonds.  The Company shall have, and is hereby
          granted, the option to prepay all or any portion of the Purchase
          Price Payments and in conjunction therewith to direct the
          redemption, or provision for payment or redemption, of a
          principal amount of Bonds equal to the amount of principal of the
          Purchase Price Payments to be prepaid, any such redemption to be
          in accordance with Section 3.01(a) or (b) of the Ordinance.  In
          order to exercise such option, the Company shall deliver to the
          City and the Trustee a notice designating the principal amount of
          the Bonds to be redeemed, or for the payment or redemption of
          which provision is to be made, and, in the case of redemption of
          Bonds, or provision therefor, specifying the date of redemption
          and the applicable redemption provision of the Ordinance.  Upon
          receipt of such notice, the City shall take, or cause to be
          taken, the actions required by the Ordinance to discharge the
          lien created thereby through the redemption, or provision for
          payment or redemption, of all Bonds then Outstanding, or to
          effect the redemption, or provision for payment or redemption, of
          less than all the Bonds then Outstanding.  The date of any such
          redemption shall not be less than 45 days from the date such
          notice is given (unless a shorter notice is satisfactory to the
          Trustee).  Unless otherwise stated therein, such notice shall be
          revocable by the Company at any time prior to the time at which
          the Bonds to be redeemed, or for the payment or redemption of
          which provision is to be made, are first deemed to be paid in
          accordance with Article VIII of the Ordinance.  The Company shall
          furnish any moneys or Government Obligations (as defined in the
          Ordinance) required by the Ordinance to be deposited with the
          Trustee or otherwise paid by the City in connection with any of
          the foregoing purposes.  The redemption, or provision for payment
          or redemption, of Bonds as contemplated in this Section shall,
          pro tanto, reduce and constitute a prepayment of the Purchase
          Price Payments.

               SECTION 9.02.  Compliance with the Ordinance.  Anything in
          this Agreement to the contrary notwithstanding, the City and the
          Company shall take all actions required by this Agreement and the
          Ordinance in order to comply with any provisions of the Ordinance
          requiring the mandatory redemption of Bonds, including, without
          limitation, Section 3.01(c) of the Ordinance.


                                      ARTICLE X

                                    MISCELLANEOUS

               SECTION 10.01.  Term of Agreement.  This Agreement shall
          remain in full force and effect from the date hereof until the
          right, title and interest of the Trustee in and to the Trust
          Estate (as defined in the Ordinance) shall have ceased,
          terminated and become void in accordance with Article VIII of the
          Ordinance and until all payments required under this Agreement
          shall have been made.  Notwithstanding the foregoing, the
          covenants contained in Section 5.04, 5.05, Section 6.04 and 8.05
          hereof shall survive the termination of this Agreement.

               SECTION 10.02.  Effect of Plant Agreements.  The City
          acknowledges that the Company has executed and delivered certain
          of the Plant Agreements and may execute and deliver others.  The
          Company agrees that none of the Plant Agreements heretofore or
          hereafter executed and delivered shall in any way affect or
          diminish the rights of the City or the obligations to the City of
          the Company created by this Agreement.  The City acknowledges
          that the Facilities are subject to the lien of the Company
          Mortgages and are or may be subject to other Permitted
          Encumbrances.

               SECTION 10.03.  Notices.  Except as otherwise provided in
          this Agreement, all notices, certificates, requests, requisitions
          and other communications hereunder shall be in writing and shall
          be sufficiently given and shall be deemed given when mailed by
          registered mail, postage prepaid, addressed as follows: if to the
          City, at 800 Municipal Drive, Farmington, New Mexico  87401,
          Attention: Treasurer; if to the Company, at 220 West Sixth
          Street, Tucson, Arizona  85702, Attention: Treasurer; and if to
          the Trustee, at such address as shall be designated by it in
          accordance with the provisions of the Ordinance.  A copy of each
          notice, certificate, request or other communication given
          hereunder to the City, the Company, or the Trustee shall also be
          given to the others.  The City, the Company, and the Trustee may,
          by notice given hereunder, designate any further or different
          addresses to which subsequent notices, certificates, requests or
          other communications shall be sent.  

               SECTION 10.04.  Parties in Interest.  This Agreement shall
          inure to the benefit of and shall be binding upon the City, the
          Company and their respective successors and assigns, and no other
          person, firm or corporation shall have any right, remedy or claim
          under or by reason of this Agreement; provided, however, that the
          rights and remedies granted to the City in Article VIII hereof
          shall inure to the benefit of the Trustee, on behalf of the
          Owners from time to time of the Bonds, and shall be enforceable
          by the Trustee as a third party beneficiary or as assignee of the
          City; and provided, further, that any obligation of the City
          created by or arising out of this Agreement shall not be a
          general obligation of the City within the meaning of Article 9,
          Sections 12 and 13 of the Constitution of the State of New Mexico
          and shall be payable solely out of the Receipts and Revenues of
          the City from the Sale Agreement and shall never constitute an
          indebtedness of the City within the meaning of any state
          constitutional provision or statutory limitation and shall never
          constitute or give rise to a pecuniary liability of the City or a
          charge upon the City's general credit or against its taxing
          powers.

               SECTION 10.05.  Amendments.  This Agreement may be amended
          only by written agreement of the parties hereto, subject to the
          limitations set forth herein and in the Ordinance.

               SECTION 10.06.  Counterparts.  This Agreement may be
          executed in any number of counterparts, each of which, when so
          executed and delivered, shall be an original; but such
          counterparts shall together constitute but one and the same
          Agreement.

               SECTION 10.07.  Severability.  If any clause, provision or
          section of this Agreement shall, for any reason, be held illegal
          or invalid by any court, the illegality or invalidity of such
          clause, provision or section shall not affect any of the
          remaining clauses, provisions or sections hereof, and this
          Agreement shall be construed and enforced as if such illegal or
          invalid clause, provision or section had not been contained
          herein.  In case any agreement or obligation contained in this
          Agreement be held to be in violation of law, then such agreement
          or obligation shall be deemed to be the agreement or obligation
          of the City or the Company, as the case may be, to the full
          extent permitted by law.  

               SECTION 10.08.  Governing Law.  The laws of the State of New
          Mexico shall govern the construction and enforcement of this
          Agreement.


   <PAGE> 


                                      SIGNATURES

               IN WITNESS WHEREOF, the parties hereto have caused this
          Amended and Restated Installment Sale Agreement to be duly
          executed as of the day and year first above written.



                                             CITY OF FARMINGTON,
                                              as Vendor


          ATTEST:                            By /s/ Thomas C. Taylor
						----------------------
                                                  Mayor
          /s/ Mary L. Banks
        -----------------------------     
               City Clerk

          (SEAL)                             TUCSON ELECTRIC POWER COMPANY,
                                               as Vendee

          ATTEST:                            By  /s/ Kevin Larson
						----------------------
                                                  Vice President

	  /s/ Vincent Nitido Jr.
	--------------------------
             Assistant Secretary

   <PAGE> 

                                                                  EXHIBIT A


                            DESCRIPTION OF THE FACILITIES


               The Facilities consist of various systems and facilities to
          abate or control water and atmospheric pollution from the
          generation of electricity by Units 1 and 2 of the San Juan
          Generating Station (the "Plant").  Such systems and facilities
          contain equipment to collect, remove, alter, and dispose of air
          and water pollutants so that gaseous and liquid emissions to the
          environment from Units 1 and 2 meet all applicable government air
          and water quality standards.  Both Units 1 and 2 are coal-fired,
          steam turbine electric generating units.  Combustion of
          pulverized coal in these Units is the primary cause of pollution
          at the Plant.  Ash, nitrogen oxide, and sulfur oxides are by-
          products of combustion that must be controlled in order to meet
          environmental quality standards.  Because pulverized coal is used
          as a fuel, coal dust must be suppressed when coal is loaded,
          transported, or crushed.  Also, the generation of steam requires
          large quantities of fresh water for boiler makeup and condenser
          cooling.  Cooling tower blowdown has a high concentration of
          dissolved solids and must be treated in order to prevent the
          possibility of contamination of surrounding surface water with
          inorganic salts.  In addition, wastewater from the Plant's
          sanitary system must be treated.

               Major components of the project are as follows:

                    (A)  Ash Handling System.  A pneumatic system including
               blowers, valves, pipes, storage silos, unloading facilities,
               associated structural supports and controls to transfer and
               store fly ash collected from the steam generator economizer
               and precipitator hoppers of both Units 1 and 2.  A high
               pressure water sluicing system including pumps, valves, ash
               grinder, pipes, dewatering tanks, unloading facilities,
               associated structural supports, and controls to transfer and
               store bottom ash from the steam generators of both Units 1
               and 2.

                    (B)  Nitrogen Oxides Reduction System.  Windbox
               modification to include overfire air ports to reduce NOx
               formation by off stoichiometric combustion for Unit 2. 
               Windbox modification to include overfire air ports and duct
               work, dampers, fan and motor for gas recirculation to reduce
               NOx formation by reducing flame temperatures and diluting
               combustion air for Unit 1.

                    (C)  Electrostatic Precipitators.  High efficiency
               electrostatic precipitators for both Units 1 and 2, along
               with associated structural supports and duct work, to remove
               fly ash from flue gas exiting the steam boiler.

                    (D)  Sulfur Oxide and Particulate Removal System. 
               Duplicate equipment is provided at both Units 1 and 2.

                         (1)  Venturi scrubber-A variable throat venturi to
                    provide (i) backup fly ash removal to the electrostatic
                    precipitators and (ii) incidental sulfur oxide removal.

                         (2)  Sulfur oxide absorber-Open, multi-stage,
                    spray chamber to contact a reagent solution with sulfur
                    oxide in the flue gas in order to chemically remove the
                    sulfur oxide.

                         (3)  Demisting train-Cyclone separator followed by
                    a chevron demister and a mesh pad demister (i) to
                    remove fly ash from the flue gas in case of
                    precipitator upset and (ii) to prevent particle
                    reentrainment from the scrubber system itself by
                    physical entrapment of particulate matter.

                         (4)  Reheat section-Oil burner and related duct
                    work to reheat flue gas in order to keep sulfur oxide
                    in a gaseous form to maintain operating reliability of
                    the Scrubber System and to provide additional plume
                    buoyancy.

                         (5)  Calcium sulfate stabilization system-Primary
                    and secondary dewatering tanks, a mixing and
                    conditioning tank, reagent dispensing tanks, and
                    associated piping, conveyors, pumps, and other
                    equipment to chemically fix calcium sulfate residue.

                    (E)  Dust Suppression System.  Pipes, pumps, pipe
               nozzles, tanks, and associated equipment to spray water over
               coal transfer points in order to control the escape of coal
               dust to the atmosphere.

                    (F)  Wastewater Treatment System.

                         (1)  Collecting basin-A two and one-half million
                    gallon soil cement pond to receive and settle
                    wastewater from steam boiler blowdown, cooling tower
                    blowdown, and sanitary waste treatment.

                         (2)  Evaporator-Mechanical evaporator to remove
                    inorganic salts from process wastewater.

                         (3)  Sanitary system-An extended aeration system
                    to treat sanitary wastes.

                         (4)  Sewer system-Sewers, pipes, pumps, sumps, and
                    associated equipment necessary to interconnect the
                    various components of the Wastewater Treatment System.


                                                     EXHIBIT 4b






          =================================================================







                                 CITY OF FARMINGTON,
                                      NEW MEXICO




                                   ----------------




                                ORDINANCE NO. 97-1055
                                ADOPTED APRIL 17, 1997




                                  -----------------




                                     AUTHORIZING

                           POLLUTION CONTROL REVENUE BONDS,
                                    1997 SERIES A
                   (TUCSON ELECTRIC POWER COMPANY SAN JUAN PROJECT)




                                  -----------------







          =================================================================

   <PAGE> 

                                  TABLE OF CONTENTS

                                                                       Page
                                                                      -----

               Title  . . . . . . . . . . . . . . . . . . . . . . . . .   1
               Recitals . . . . . . . . . . . . . . . . . . . . . . . .   1
               Granting Clause  . . . . . . . . . . . . . . . . . . . .   2


                                      ARTICLE I

                 DEFINITIONS; FINDINGS, DECLARATIONS, DETERMINATIONS,
                             APPROVALS AND AUTHORIZATIONS

          Section 1.01.  Definitions  . . . . . . . . . . . . . . . . .   3
          Section 1.02.  Findings, Declarations, Determinations, 
                           Approvals and Authorizations  . .  . . . . .  10

                                      ARTICLE II

                                      THE BONDS

          Section 2.01.  Creation of Bonds. . . . . . . . . . . . . . .  11
          Section 2.02.  Form of Bonds. . . . . . . . . . . . . . . . .  11
          Section 2.03.  Execution of Bonds.  . . . . . . . . . . . . .  12
          Section 2.04.  Authentication of Bonds. . . . . . . . . . . .  12
          Section 2.05.  Bonds Not General Obligations  . . . . . . . .  12
          Section 2.06.  Prerequisites to Authentication of Bonds.  . .  13
          Section 2.07.  Lost or Destroyed Bonds or Bonds Canceled in
                          Error . . . . . . . . . . . . . . . . . . . .  13
          Section 2.08.  Transfer, Registration and Exchange of Bonds .  14
          Section 2.09.  Other Obligations  . . . . . . . . . . . . . .  15
          Section 2.10.  Temporary Bonds  . . . . . . . . . . . . . . .  15
          Section 2.11.  Cancellation of Bonds  . . . . . . . . . . . .  15
          Section 2.12.  Payment of Principal and Interest  . . . . . .  15
          Section 2.13.  Bonds Equally Secured  . . . . . . . . . . . .  16
          Section 2.14.  Applicability of Book-Entry Provisions . . . .  16


                                     ARTICLE III

                                 REDEMPTION OF BONDS

          Section 3.01.  Redemption Provisions  . . . . . . . . . . . .  16
          Section 3.02.  Selection of Bonds to be Redeemed  . . . . . .  17
          Section 3.03.  Procedure for Redemption . . . . . . . . . . .  18
          Section 3.04.  No Partial Redemption After Default  . . . . .  18
          Section 3.05.  Payment of Redemption Price  . . . . . . . . .  18


          --------------
          *    This table of contents is  not a part of the Ordinance,  and
               is  for convenience  only.   The captions  herein are  of no
               legal  effect and do not vary the meaning or legal effect of
               any part of the Ordinance.



   <PAGE> 

					-ii-

                                      ARTICLE IV

                                    THE BOND FUND

          Section 4.01.  Creation of Bond Fund  . . . . . . . . . . . .  19
          Section 4.02.  Liens  . . . . . . . . . . . . . . . . . . . .  19
          Section 4.03.  Deposits into Bond Fund  . . . . . . . . . . .  19
          Section 4.04.  Use of Moneys in Bond Fund . . . . . . . . . .  19
          Section 4.05.  Custody of Bond Fund; Withdrawal of Moneys . .  19
          Section 4.06.  Bonds Not Presented for Payment  . . . . . . .  19
          Section 4.07.  Moneys Held in Trust . . . . . . . . . . . . .  20

                                      ARTICLE V

                               DISPOSITION OF PROCEEDS

          Section 5.01.  Disposition of Proceeds. . . . . . . . . . . .  20

                                      ARTICLE VI

                                     INVESTMENTS

          Section 6.01.  Investments  . . . . . . . . . . . . . . . . .  20

                                     ARTICLE VII

                                  GENERAL COVENANTS

          Section 7.01.  No General Obligations . . . . . . . . . . . .  21
          Section 7.02.  Performance of Covenants of the City;
                          Representations . . . . . . . . . . . . . . .  21
          Section 7.03.  Maintenance of Rights and Powers; Compliance with
                          Laws  . . . . . . . . . . . . . . . . . . . .  21
          Section 7.04.  Enforcement of Obligations of the Company;
                          Amendments  . . . . . . . . . . . . . . . . .  21
          Section 7.05.  Further Instruments. . . . . . . . . . . . . .  21
          Section 7.06.  No Disposition of Trust Estate.  . . . . . . .  22
          Section 7.07.  Financing Statements.    . . . . . . . . . . .  22
          Section 7.08.  Tax Covenants; Rebate Fund.  . . . . . . . . .  22
          Section 7.09.  Notices of Trustee.  . . . . . . . . . . . . .  23

                                     ARTICLE VIII

                                      DEFEASANCE

          Section 8.01.  Defeasance.  . . . . . . . . . . . . . . . . .  23

                                      ARTICLE IX

                                DEFAULTS AND REMEDIES

          Section 9.01.  Events of Default. . . . . . . . . . . . . . .  24
          Section 9.02.  Remedies.  . . . . . . . . . . . . . . . . . .  25
          Section 9.03.  Restoration to Former Position.  . . . . . . .  25
          Section 9.04.  Owners' Right to Direct Proceedings. . . . . .  25


   <PAGE> 

					-iii-


          Section 9.05.  Limitation on Owners' Right to Institute
                          Proceedings.  . . . . . . . . . . . . . . . .  26
          Section 9.06.  No Impairment of Right to Enforce Payment. . .  26
          Section 9.07.  Proceedings by Trustee without Possession of
                          Bonds.  . . . . . . . . . . . . . . . . . . .  26
          Section 9.08.  No Remedy Exclusive. . . . . . . . . . . . . .  26
          Section 9.09.  No Waiver of Remedies. . . . . . . . . . . . .  26
          Section 9.10.  Application of Moneys. . . . . . . . . . . . .  27
          Section 9.11.  Severability of Remedies.  . . . . . . . . . .  27
          Section 9.12.  No Obligation of City to Act.  . . . . . . . .  27

                                      ARTICLE X

                TRUSTEE; PAYING AGENT AND CO-PAYING AGENTS; REGISTRAR

          Section 10.01. Acceptance of Trusts.  . . . . . . . . . . . .  28
          Section 10.02. No Responsibility for Recitals.  . . . . . . .  28
          Section 10.03. Limitations on Liability.  . . . . . . . . . .  28
          Section 10.04. Compensation, Expenses and Advances. . . . . .  28
          Section 10.05. Notice of Events of Default. . . . . . . . . .  29
          Section 10.06. Action by Trustee. . . . . . . . . . . . . . .  29
          Section 10.07. Good Faith Reliance. . . . . . . . . . . . . .  29
          Section 10.08. Dealings in Bonds and with the City and the
                          Company.  . . . . . . . . . . . . . . . . . .  29
          Section 10.09. Allowance of Interest. . . . . . . . . . . . .  30
          Section 10.10. Construction of Ordinance. . . . . . . . . . .  30
          Section 10.11. Resignation of Trustee.  . . . . . . . . . . .  30
          Section 10.12. Removal of Trustee.  . . . . . . . . . . . . .  30
          Section 10.13. Appointment of Successor Trustee.  . . . . . .  30
          Section 10.14. Qualifications of Successor Trustee. . . . . .  31
          Section 10.15. Judicial Appointment of Successor Trustee. . .  31
          Section 10.16. Acceptance of Trusts by Successor Trustee. . .  31
          Section 10.17. Successor by Merger or Consolidation.  . . . .  31
          Section 10.18. Standard of Care.  . . . . . . . . . . . . . .  32
          Section 10.19. Notice to Owners of Bonds of Event of Default.  32
          Section 10.20. Intervention in Litigation of the City.  . . .  32
          Section 10.21. Paying Agent; Co-Paying Agents.  . . . . . . .  32
          Section 10.22. Qualifications  of  Paying  Agent   and  Co-Paying
          Agents;
                          Resignation; Removal. . . . . . . . . . . . .  32
          Section 10.23. Registrar. . . . . . . . . . . . . . . . . . .  33
          Section 10.24. Qualifications of Registrar; Resignation;
                          Removal.  . . . . . . . . . . . . . . . . . .  33
          Section 10.25. Several Capacities.  . . . . . . . . . . . . .  34

                                      ARTICLE XI

                   EXECUTION OF INSTRUMENTS BY OWNERS OF BONDS AND
                             PROOF OF OWNERSHIP OF BONDS

          Section 11.01. Execution of Instruments; 
			    Proof of Ownership . . . . . . . . . . . .  34

                                     ARTICLE XII

                MODIFICATION OF THIS ORDINANCE AND THE SALE AGREEMENT

          Section 12.01. Limitations. . . . . . . . . . . . . . . . . .  34
          Section 12.02. Supplemental Ordinances without Owner Consent.  35


   <PAGE> 

					-iv-


          Section 12.03. Supplemental Ordinances with Consent of Owners.  
                                                                         35
          Section 12.04. Effect of Supplemental Ordinance.  . . . . . .  36
          Section 12.05. Consent of the Company.  . . . . . . . . . . .  36
          Section 12.06. Amendment of Sale Agreement without Consent of
                          Owners. . . . . . . . . . . . . . . . . . . .  37
          Section 12.07. Amendment of Sale Agreement with Consent of
                          Owners. . . . . . . . . . . . . . . . . . . .  37

                                     ARTICLE XIII

                                    MISCELLANEOUS

          Section 13.01. Successors of the City.  . . . . . . . . . . .  37
          Section 13.02. Parties in Interest. . . . . . . . . . . . . .  37
          Section 13.03. Ratification of Prior Action.  . . . . . . . .  38
          Section 13.04. Severability.  . . . . . . . . . . . . . . . .  38
          Section 13.05. No Personal Liability of City Officials. . . .  38
          Section 13.06. Bonds Owned by the City or the Company.  . . .  38
          Section 13.07. Acceptance by Trustee. . . . . . . . . . . . .  38
          Section 13.08. Governing Law. . . . . . . . . . . . . . . . .  38
          Section 13.09. Notices. . . . . . . . . . . . . . . . . . . .  38
          Section 13.10. Holidays.  . . . . . . . . . . . . . . . . . .  39
          Section 13.11. Emergency Circumstances  . . . . . . . . . . .  39


          Signatures and Seals  . . . . . . . . . . . . . . . . . . . .  40
          Acceptance of Duties by the Trustee . . . . . . . . . . . . .  40

          Exhibit A Form of Bond  . . . . . . . . . . . . . . . . . . . A-1
          Exhibit B Form of Endorsement of Transfer . . . . . . . . . . B-1
          Exhibit C Form of Certificate of Authentication . . . . . . . C-1

   <PAGE> 

                                ORDINANCE NO. 97-1055

               An Ordinance  authorizing and providing for  the issuance by
          the City  of Farmington, New  Mexico of an  issue of its  revenue
          bonds designated  "Pollution Control Revenue Bonds, 1997 Series A
          (Tucson  Electric Power Company  San Juan Project)"  to be issued
          pursuant to the  provisions of the Pollution Control Revenue Bond
          Act,  Chapter 397, Laws of 1973 of  the State of New Mexico, 31st
          Legislature,  1st  Session,  as   amended,  for  the  purpose  of
          refunding certain outstanding revenue bonds issued under such Act
          the  proceeds of which were used to  finance certain costs of the
          acquisition, construction and installation of projects consisting
          of undivided interests in certain air and water pollution control
          facilities at the San Juan Generating Station, an  electric power
          generating  plant  located  in   San  Juan  County,  New  Mexico,
          undivided  interests in which are  owned by Tucson Electric Power
          Company, a corporation  organized and existing under  the laws of
          the State of  Arizona, formerly  known as Tucson  Gas &  Electric
          Company, said revenue bonds to be payable by the City solely from
          the revenues payable to the City by Tucson Electric Power Company
          pursuant  to  a certain  Amended  and  Restated Installment  Sale
          Agreement dated as of April 1,  1997 between the City, as Vendor,
          and  Tucson Electric Power Company, as  Vendee, and certain other
          moneys pledged  therefor hereunder,  said revenue bonds  never to
          constitute  an indebtedness of the City within the meaning of any
          State constitutional provision or statutory limitation, and never
          to constitute or  give rise to a pecuniary liability  of the City
          or  a  charge against  its general  credit  or taxing  powers and
          declaring an emergency.


               WHEREAS,   the   City   of   Farmington,   an   incorporated
          municipality, a  body politic  and corporate, existing  under the
          Constitution and  laws of  the State  of New Mexico  (hereinafter
          called  the  "City"),  is  authorized  and  empowered  under  the
          Pollution Control Revenue Bond Act, Chapter 397, Laws  of 1973 of
          the  State of  New  Mexico,  31st  Legislature, 1st  Session,  as
          amended  (the "Act") to issue  revenue bonds for  and to acquire,
          whether by  construction, purchase,  gift or  lease, one  or more
          projects  consisting of  any  land, interest  in land,  building,
          structure, facility, system, fixture,  improvement, appurtenance,
          machinery, equipment or any  combination thereof, or any interest
          in any one or more of the foregoing, whether or  not presently in
          existence  or  under   construction,  used   by  an   individual,
          partnership,  firm,  company,  corporation  (including  a  public
          utility),  association,  trust,  estate,  political  subdivision,
          state   agency  or   any  other   legal  entity,  or   its  legal
          representative,  agent   or   assigns,  substantially   for   the
          reduction, abatement  or prevention  of pollution  including, but
          not  limited  to,  the  removal of  pollutants,  contaminants  or
          foreign substances from land, air or water, or for the removal or
          treatment of any  substance in a  processed material which  would
          otherwise cause  pollution when  such material is  used, provided
          that any such project  shall be located within  the State of  New
          Mexico and within or  without or partially within or  without the
          City,  but not more than  fifteen miles outside  of the corporate
          limits of  the City (or that, if  there is no municipality within
          fifteen miles of the project, the City is in the  county in which
          the  project is  or  may be  located)  and to  sell  or lease  or
          otherwise dispose of any or all  of such projects upon such terms
          and conditions  as the  governing body  of the City  (hereinafter
          called  the "City Council") may  deem advisable and  as shall not
          conflict with the provisions of the Act; and

               WHEREAS, the  City is authorized and empowered under the Act
          to issue  revenue bonds  to refund  bonds issued  and outstanding
          under the Act; and 

               WHEREAS,  on  August  28,  1973, the  City  Council  adopted
          Resolution Number 709 ("Resolution No. 709") determining to issue
          and,  subject to  certain conditions,  agreeing to  issue revenue
          bonds under the Act to finance the costs to Tucson Electric Power
          Company  formerly known  as  Tucson  Gas  & Electric  Company,  a
          corporation organized and existing under the laws of the State of
          Arizona (the "Company"), of certain facilities for the reduction,
          abatement or prevention of  pollution caused by the  operation of
          the  San Juan  Generating Station,  an electric  power generating
          plant  located   in  San  Juan  County,   New  Mexico,  including
          facilities   for  the  reduction,   abatement  or  prevention  of
          pollution  caused by  the operation  of  Units 1  and  2 of  such
          generating station  (the "Facilities") and  authorizing the Mayor
          of  the  City  to  execute  and  deliver  preliminary  agreements
          relating thereto and, subject to certain conditions, to take such
          steps and actions as required or necessary in order to issue such
          revenue  bonds,   and  a  Preliminary  Agreement  (the  "Original
          Preliminary  Agreement"), in the  form contemplated by Resolution
          No. 709, was executed and delivered  by the City and the Company;
          and

               WHEREAS,  on November  27,  1973, the  City Council  adopted
          Resolution  Number  721  ("Resolution   No.  721")  in  order  to
          authorize consideration  of the adoption of  a proposed ordinance
          in order to,  among other matters, increase  the aggregate amount
          of  revenue bonds authorized to be  issued by the City to finance
          the costs  to the Company  of the  acquisition, construction  and
          installation of the Facilities; and

               WHEREAS,  on  August  13,  1974, the  City  Council  adopted
          Resolution  Number  751  ("Resolution No.  751")  authorizing the
          Mayor  of the City to  execute and deliver  certain amendments to
          the  Original  Preliminary Agreement  in  order  to, among  other
          matter, further  increase the  aggregate amount of  revenue bonds
          authorized  to be issued by the City  to finance the costs to the
          Company of the acquisition,  construction and installation of the
          Facilities; and

               WHEREAS,   a   supplemental   preliminary   agreement   (the
          "Supplemental  Preliminary  Agreement",  and,  together  with the
          Original   Preliminary  Agreement   and   Resolution   No.   721,
          hereinafter   collectively  referred   to  as   the  "Preliminary
          Agreement"), in the form contemplated  by Resolution No. 751, was
          executed  and delivered by the City and the Company on August 13,
          1974; and

               WHEREAS, the City has heretofore issued and sold $55,000,000
          aggregate  principal  amount  of  its  Pollution  Control Revenue
          Bonds,  Series  1973  (Tucson  Gas &  Electric  Company  San Juan
          Project),  of  which $47,910,000  remain  outstanding (the  "1973
          Bonds"),  the proceeds  of which  were to  be used  to  finance a
          portion  of  the  costs  to   the  Company  of  the  acquisition,
          construction and  installation  of the  Facilities  described  in
          Exhibit A of that certain Installment Sale Agreement, dated as of
          December 1,  1973, as  amended and supplemented  pursuant to  the
          terms  thereof  prior  to  the  date  hereof  (the  "Series  1973
          Installment Sale  Agreement"), between  the City, as  Vendor, and
          Public Service Company of New Mexico and the Company, as Vendees;
          and 

               WHEREAS, Public  Service Company of New  Mexico has redeemed
          the pollution  control revenue bonds secured  by revenues derived
          pursuant  to the Series  1973 Installment Sale  Agreement and its
          obligations and  rights pursuant thereto have  been discharged so
          that the Company remains as the sole Vendee pursuant thereto; and

               WHEREAS,  the  City  has  also heretofore  issued  and  sold
          $32,500,000  aggregate  principal  amount of  its  Collateralized
          Pollution  Control Revenue  Bonds,  1977 Series A  (Tucson Gas  &
          Electric Company  San Juan Project), of  which $32,500,000 remain
          outstanding  (the "1977  Bonds")  (the 1973  Bonds  and the  1977
          Bonds, collectively,  the "Prior  Bonds"), the proceeds  of which
          were  to be used to finance a portion of the costs to the Company
          of  the   acquisition,  construction  and  installation   of  the
          Facilities  described in  Exhibit A  of that  certain Installment
          Sale Agreement,  dated as  of  November 1, 1977,  as amended  and
          supplemented pursuant  to the  terms thereof  prior  to the  date
          hereof  (the "Series 1977  Installment Sale  Agreement"), between
          the City, as Vendor, and the Company, as Vendee;  and

               WHEREAS,  the Company  has  requested the  City to  consider
          taking steps,  in  accordance  with  the  Preliminary  Agreement,
          necessary  for the issuance of  revenue bonds under  the Act, the
          proceeds  of which revenue  bonds are  to be  used to  refund and
          redeem the Prior Bonds; and

               WHEREAS,  the City  is adopting  a resolution  approving and
          authorizing  the execution and delivery by the Mayor and the City
          Clerk of the City, on behalf of the City, of that certain Amended
          and Restated  Installment Sale  Agreement, dated as  of April  1,
          1997 (hereinafter called the "Sale Agreement"), between the City,
          as Vendor, and the  Company as Vendee, which amends  and restates
          in their entirety the Series 1973 Installment Sale Agreement, and
          the Series  1977 Installment  Sale Agreement (each,  an "Original
          Sale Agreement", and hereinafter  collectively referred to as the
          "Original Sale Agreements"); and

               WHEREAS,  the Sale Agreement restates the  prior sale by the
          Company  of its undivided interest in the Facilities described in
          Exhibit A to each of the Original Sale Agreements to the City and
          the  prior  sale  back  by  the  City  of  its  interest  in  the
          Facilities, and sets forth  the undertaking by the City  to issue
          and sell its issue of revenue bonds designated "Pollution Control
          Revenue Bonds,  1997 Series A (Tucson Electric  Power Company San
          Juan  Project)  (hereinafter called  the  "Bonds"),  if and  when
          authorized by the City  pursuant to this Ordinance,  the proceeds
          of the Bonds (except for accrued  interest, if any) to be used to
          refund and redeem the Prior Bonds; and 

               WHEREAS, pursuant to  the Sale Agreement referred  to in the
          preceding clause,  the  Company will  release the  City and  will
          agree that  the City shall not  be liable for, and  will agree to
          indemnify and hold the City harmless from, certain matters; and

               WHEREAS, certain findings and determinations relating to the
          Sale  Agreement and the Facilities have  heretofore been made and
          are set forth in this Ordinance; and

               WHEREAS,  this  Ordinance shall  serve  as  an indenture  of
          trust.

               NOW, THEREFORE,

               BE  IT ORDAINED  BY  THE  GOVERNING  BODY  OF  THE  CITY  OF
          FARMINGTON, NEW  MEXICO that the  City, in  consideration of  the
          covenants  herein contained and of the purchase and acceptance of
          the Bonds  by  the Owners  thereof, and  in order  to secure  the
          payment  of  all  Bonds  at   any  time  outstanding  under  this
          Ordinance,  according   to  their  tenor  and   effect,  and  the
          performance and observance of all the covenants and conditions in
          the  Bonds and  herein contained,  and to  declare the  terms and
          conditions upon and  subject to  which the Bonds  are issued  and
          secured,  does  grant,  pledge  and  assign to  the  Trustee  (as
          hereinafter defined), and to  its successors and assigns forever,
          upon written  acceptance of  this Ordinance by  the Trustee,  the
          Trust  Estate   (as  hereinafter  defined)  for   the  equal  and
          proportionate benefit, security and protection of all holders and
          owners  of the Bonds issued  under and secured  by this Ordinance
          without privilege,  priority or  distinction  as to  the lien  or
          otherwise of  any of the Bonds  over any other of  the Bonds, all
          upon the terms stated in this Ordinance.


                                      ARTICLE I

                 DEFINITIONS; FINDINGS, DECLARATIONS, DETERMINATIONS,
                             APPROVALS AND AUTHORIZATIONS

               Section 1.01.  Definitions.    The  terms  defined  in  this
          Article I shall,  for all  purposes of this  Ordinance, have  the
          meanings herein specified,  unless the  context clearly  requires
          otherwise:

          Act:

               "Act"  shall mean  the Pollution  Control Revenue  Bond Act,
          Chapter 397,  Laws of  1973  of the  State  of New  Mexico,  31st
          Legislature, 1st Session, as amended by Chapter 312, Laws of 1977
          of the State  of New  Mexico, 33rd Legislature,  1st Session,  by
          Chapter 181,  Laws  of 1978  of  the State  of New  Mexico,  33rd
          Legislature, 2nd Session, and by Chapter 114, Laws of 1983 of the
          State  of New Mexico, 36th Legislature, 1st Session, and all acts
          supplemental thereto or amendatory thereof.

          Administration Expenses:

               "Administration Expenses" shall mean the reasonable expenses
          incurred by the  City with  respect to the  Sale Agreement,  this
          Ordinance and any  transaction or event contemplated  by the Sale
          Agreement or  this  Ordinance,  including  the  compensation  and
          reimbursement of expenses and advances payable to the Trustee, to
          the Paying Agent, any Co-Paying Agent and the Registrar.

          Authorized Company Representative:

               "Authorized Company Representative"  shall mean each  person
          at the time designated to act on behalf of the Company by written
          certificate furnished to the City  and the Trustee containing the
          specimen signature of  such person  and signed on  behalf of  the
          Company by  its President, any  Vice President or  its Treasurer,
          together with its Secretary or any Assistant Secretary.

          Bond Counsel:

               "Bond Counsel" shall  mean any firm  or firms of  nationally
          recognized bond counsel experienced  in matters pertaining to the
          validity  of, and  exclusion from  gross income  for federal  tax
          purposes  of  interest on  bonds issued  by states  and political
          subdivisions, selected by the Company and acceptable to the City.

          Bond Fund:

          "Bond Fund" shall mean the fund created by Section 4.01 hereof.

          Bonds:

               "Bond"  or  "Bonds" shall  mean the  bonds authorized  to be
          issued under this Ordinance.

          City:

               "City" shall mean the  City of Farmington, in the  County of
          San  Juan,  an  incorporated  municipality, a  body  politic  and
          corporate, existing  under the Constitution and laws of the State
          of New Mexico, and its successors and their assigns.

          City Council:

               "City  Council" shall mean the  City Council of  the City or
          the  board or other body  in which general  legislative powers of
          the City subsequently may be vested.

          Code:

               "Code" shall mean the  Internal Revenue Code of 1986  or any
          successor  statute thereto.  Each  reference to a  section of the
          Code herein shall be deemed to include the United States Treasury
          Regulations proposed  or in  effect thereunder and  applicable to
          the  Bonds or  the use  of proceeds  thereof, unless  the context
          clearly requires  otherwise.   References to any  particular Code
          section shall, in the event of a successor Code, be  deemed to be
          a reference to the successor to such Code section.

          Company:

               "Company"  shall  mean  Tucson  Electric  Power  Company,  a
          corporation organized and existing under the laws of the State of
          Arizona,  its successors  and their  assigns, including,  without
          limitation, any successor obligor under  Section 6.01 or 7.02  of
          the  Sale  Agreement to  the  extent of  the  obligations assumed
          thereunder.

          Depositary:

               "Depositary" shall mean The  Depository Trust Company or any
          successor thereto as a securities repository for the Bonds.

          Facilities:

               "Facilities" shall  mean the systems and  facilities for the
          reduction,  abatement or  prevention of  pollution caused  by the
          operation of  the Plant which  are described in Exhibit  A to the
          Sale Agreement, as  from time  to time amended  or modified,  and
          related improvements.

          Government Obligations:

               "Government Obligations" shall mean:

                    (a) direct obligations of, or obligations the principal
               of and interest on  which are unconditionally guaranteed by,
               the  United States of America entitled to the benefit of the
               full faith and credit thereof; and

                    (b)   certificates,   depositary   receipts  or   other
               instruments which  evidence a  direct ownership  interest in
               obligations described in clause (a) above or in any specific
               interest  or  principal  payments due  in  respect  thereof;
               provided, however, that the custodian of such obligations or
               specific interest or principal  payments shall be a  bank or
               trust company organized under the laws of the  United States
               of America  or of any state  or territory thereof or  of the
               District of Columbia, with  a combined capital stock surplus
               and undivided profits of at least $50,000,000; and provided,
               further,  that except as  may be otherwise  required by law,
               such custodian shall be  obligated to pay to the  holders of
               such certificates, depositary  receipts or other instruments
               the full  amount received  by such  custodian in  respect of
               such  obligations  or specific  payments  and  shall not  be
               permitted to make any deduction therefrom.

          Investment Securities:

               "Investment  Securities" shall  mean  any  of the  following
          obligations or securities on which neither the Company nor any of
          its subsidiaries is the obligor but only to the extent investment
          in said obligations or securities is permitted by applicable law:
          (a) Government Obligations; (b) interest bearing deposit accounts
          (which  may  be  represented   by  certificates  of  deposit)  in
          national, state or  foreign banks having  a combined capital  and
          surplus of  not less  than $10,000,000; (c)  bankers' acceptances
          drawn on  and  accepted by  commercial  banks having  a  combined
          capital  and surplus of not less than $10,000,000; (d) (i) direct
          obligations of, (ii) obligations the principal of and interest on
          which  are unconditionally  guaranteed  by, and  (iii) any  other
          obligations the interest on  which is exempt from  federal income
          taxation  issued by, any state  of the United  States of America,
          the District of Columbia  or the Commonwealth of Puerto  Rico, or
          any   political   subdivision,   agency,   authority   or   other
          instrumentality  of any of the foregoing, which, in any case, are
          rated  by a  nationally recognized  rating agency  in any  of its
          three highest rating categories; (e) obligations of any agency or
          instrumentality of  the United States of  America; (f) commercial
          or  finance  company  paper  which   is  rated  by  a  nationally
          recognized  rating  agency in  any  of its  three  highest rating
          categories; (g) corporate debt securities issued by  corporations
          having debt  securities rated  by a nationally  recognized rating
          agency  in  any of  its  three  highest  rating  categories;  (h)
          repurchase  agreements  with  banking or  financial  institutions
          having  a  combined  capital  and   surplus  of  not  less   than
          $10,000,000 with  respect to any of the  foregoing obligations or
          securities;  (i) shares  or  interests  in registered  investment
          companies whose assets consist of obligations or securities which
          are described in  any other clause of this sentence;  and (j) any
          other obligations which may lawfully be purchased by the Trustee.
          The commercial  banks and banking institutions  referred to above
          may  include  the  entities  acting  as  Trustee,  Paying  Agent,
          Co-Paying  Agent or  Registrar hereunder  if such  entities shall
          otherwise satisfy the requirements set forth above.

          1954 Code:

               "1954 Code" shall mean the Internal Revenue Code of 1954, as
          amended.

          1977 Bonds:

               "1977 Bonds" shall mean  the $32,500,000 aggregate principal
          amount of  the City's  Collateralized  Pollution Control  Revenue
          Bonds,  1977 Series  A (Tucson  Gas &  Electric Company  San Juan
          Project), all of which remain outstanding.

          1973 Bonds:

               "1973 Bonds" shall mean  the $55,000,000 aggregate principal
          amount of the City's Pollution Control Revenue Bonds, Series 1973
          (Tucson  Gas &  Electric  Company  San  Juan Project),  of  which
          $47,910,000 in principal amount remains outstanding.

          Notice by Mail:

               "Notice  by Mail" or "notice" of any action or condition "by
          Mail" shall  mean a  written notice  meeting the requirements  of
          this  Ordinance  mailed by  first-class  mail  to the  Owners  of
          specified  registered  Bonds  at   the  addresses  shown  in  the
          registration books  maintained pursuant  to Section  2.08 hereof;
          provided, however, that if, because of the temporary or permanent
          suspension  of delivery  of  first-class mail  or  for any  other
          reason,  it is impossible or impracticable to give such notice by
          first-class mail,  then such giving  of notice  in lieu  thereof,
          which may include publication, as shall be made with the approval
          of the Trustee (or, if  there be no trustee hereunder, the  City)
          shall constitute a sufficient giving of such notice.

          Notice by Publication:

               "Notice  by  Publication"  or  "notice"  of  any  action  or
          condition  "by Publication"  shall mean  publication of  a notice
          meeting  the requirements  of  this Ordinance  in a  newspaper or
          financial journal of general circulation in The City of New York,
          New York, which carries financial news, is printed in the English
          language  and  is customarily  published  on  each business  day;
          provided,  however,  that  any successive  weekly  publication of
          notice required hereunder may be made, unless otherwise expressly
          provided herein, on the same or different days of the week and in
          the  same  or different  newspapers  or  financial journals;  and
          provided, further, that if, because of the temporary or permanent
          suspension  of  the publication  or  general  circulation of  any
          newspaper or financial  journal or  for any other  reason, it  is
          impossible or impracticable  to publish such notice in the manner
          herein described, then such publication  in lieu thereof as shall
          be made  with the approval  of the  Trustee (or, if  there be  no
          trustee  hereunder,  the  City)  shall  constitute  a  sufficient
          publication of such notice.

          Ordinance:

               "Ordinance"  shall  mean  this  Ordinance  of  the  City  as
          modified,  altered,  amended  or  supplemented  by  any  and  all
          ordinances  and  resolutions  supplemental hereto  or  amendatory
          hereof adopted by  the City  Council and effective  prior to  the
          initial issuance of the Bonds and all Supplemental Ordinances and
          related  resolutions  adopted  thereafter  by  the  City  Council
          pursuant hereto.

          Original Sale Agreements:

               "Original  Sale  Agreements"  shall  mean  the  Series  1973
          Installment Sale  Agreement and the Series  1977 Installment Sale
          Agreement.

          Outstanding:

               "Outstanding", when  used in  reference to the  Bonds, shall
          mean,  as  at any  particular date,  the  aggregate of  all Bonds
          authenticated and delivered under this Ordinance except:

                    (a) those canceled by  the Trustee at or prior  to such
               date or delivered  to or acquired by the Trustee at or prior
               to such date for cancellation;

                    (b) those  deemed to be paid in accordance with Article
               VIII hereof; and

                    (c) those in lieu of or in exchange or substitution for
               which  other   Bonds  shall  have  been   authenticated  and
               delivered   pursuant   to  this   Ordinance,   unless  proof
               satisfactory  to the  Trustee and  the Company  is presented
               that  such Bonds  are  held by  a  bona fide  holder  in due
               course.

          Owner:

               "Owner"  shall mean  the person  in whose  name any  Bond is
          registered  upon the  registration books  maintained pursuant  to
          Section 2.08 hereof.  The Company may be an Owner.

          Paying Agent; Co-Paying Agent; Principal Office thereof:

               "Paying Agent"  and "Co-Paying Agent" shall  mean the paying
          agent  and  any  co-paying  agent appointed  in  accordance  with
          Section  10.21 hereof.  "Principal Office" of the Paying Agent or
          any  Co-Paying Agent shall mean the  office thereof designated in
          writing to the Trustee.

          Plant:

               "Plant"  shall  mean  Units  1  and  2  and  related  common
          facilities of  the San Juan Generating Station, an electric power
          generating plant located northwest of and within fifteen miles of
          the corporate limits of  the City in San Juan  County, New Mexico
          and  not within the corporate limits of any municipality, and any
          additions or improvements thereto or replacements thereof.

          Plant Agreements:

                    "Plant Agreements" shall mean all contracts relating to
          the ownership, construction and operation of the Plant, including
          the Facilities, as from time to time amended or supplemented.

          Prior Bonds:

               "Prior  Bonds" shall mean the 1973 Bonds and the 1977 Bonds,
          collectively.

          Purchase Price Payments:

               "Purchase Price  Payments" shall mean the  payments required
          to be  made by the Company  pursuant to Section 5.02 of  the Sale
          Agreement.

          Rebate Fund:

               "Rebate  Fund" shall mean  the fund created  by Section 7.08
          hereof.

          Receipts and Revenues of the City from the Sale Agreement:

               "Receipts and Revenues of the City from the  Sale Agreement"
          shall mean  all moneys  paid or  payable to  the Trustee  for the
          account  of the City  by the Company  in respect  of the Purchase
          Price Payments and all  receipts of the Trustee which,  under the
          provisions of this Ordinance, reduce the amount of such payments.

          Record Date:

               "Record  Date"  shall  mean the  close  of  business on  the
          fifteenth (15th) day of  the calendar month immediately preceding
          each regularly scheduled interest payment date.

          Registrar; Principal Office thereof:

               "Registrar" shall mean the registrar appointed in accordance
          with Section 10.23 hereof.   "Principal Office" of the  Registrar
          shall  mean  the office  thereof  designated  in writing  to  the
          Trustee.

          Sale Agreement:

               "Sale  Agreement"  shall  mean  the  Amended   and  Restated
          Installment Sale Agreement, dated as  of April 1, 1997,  amending
          and restating the Original Sale Agreements, between the City,  as
          Vendor and the Company, as Vendee, and any and all modifications,
          alterations, amendments and supplements thereto.

          Series 1973 Installment Sale Agreement:

               "Series  1973 Installment  Sale  Agreement"  shall mean  the
          Installment Sale Agreement, dated as of December 1, 1973, between
          the City, as  Vendor, and  Public Service Company  of New  Mexico
          (which  has now  been discharged therefrom)  and the  Company, as
          Vendees,  as  amended  and  supplemented pursuant  to  the  terms
          thereof prior to the date hereof.

          Series 1977 Installment Sale Agreement:

               "Series  1977 Installment  Sale  Agreement"  shall mean  the
          Installment Sale Agreement, dated as of November 1, 1977, between
          the City, as Vendor,  and the Company, as Vendee, as  amended and
          supplemented pursuant  to the  terms  thereof prior  to the  date
          hereof.

          State:

               "State" shall mean the State of New Mexico.

          Supplemental Ordinance:

               "Supplemental  Ordinance"  shall   mean  any  ordinance   or
          resolution adopted  by the City Council  and effective subsequent
          to  the  initial  issuance  of  the  Bonds  modifying,  altering,
          amending,  supplementing  or  confirming this  Ordinance  for any
          purpose,   in  accordance   with  the   terms  hereof,   as  such
          Supplemental  Ordinance  may  be modified,  altered,  amended  or
          supplemented by  any and  all ordinances  and resolutions of  the
          City Council adopted pursuant hereto.

          Supplemental Sale Agreement:

               "Supplemental  Sale  Agreement"  shall  mean  any  agreement
          between the City and the Company modifying, altering, amending or
          supplementing the  Sale Agreement,  in accordance with  the terms
          thereof and hereof.

          Tax Agreement:

               "Tax   Agreement"  shall  mean   that  tax  certificate  and
          agreement,  dated  the date  of  the  initial authentication  and
          delivery of the Bonds, between the City and the Company, relating
          to the  requirements of the Code  and the 1954 Code,  and any and
          all  modifications,  alterations,   amendments  and   supplements
          thereto.

          Trust Estate:

               "Trust Estate" shall mean at any particular time all  right,
          title and  interest  of the  City in  and to  the Sale  Agreement
          (except  its rights  under  Sections 5.04,  5.05,  6.03 and  8.05
          thereof  and  any  rights   of  the  City  to   receive  notices,
          certificates,  requests,  requisitions  and other  communications
          thereunder),  including  without  limitation,  the  Receipts  and
          Revenues of the City  from the Sale Agreement, the Bond  Fund and
          all moneys and Investment Securities from time to time on deposit
          therein (excluding, however, any  moneys or Investment Securities
          held   in  the  Rebate  Fund),  any  and  all  other  moneys  and
          obligations (other than Bonds)  which at such time are  deposited
          or are required to be deposited with, or are held or are required
          to be held by or on behalf  of, the Trustee, the Paying Agent  or
          any Co-Paying Agent in trust under any of the provisions  of this
          Ordinance and  all other  rights, titles and  interests which  at
          such  time are subject to  the lien of  this Ordinance; provided,
          however, that  in no event shall  there be included in  the Trust
          Estate  (a) moneys or obligations  deposited with or  held by the
          Trustee in the Rebate Fund pursuant to Section 7.08 hereof or (b)
          moneys or obligations deposited  with or paid to the  Trustee for
          the redemption or payment  of Bonds which are deemed to have been
          paid  in  accordance  with Article  VIII  hereof  or moneys  held
          pursuant to Section 4.06 hereof.

          Trustee; Principal Office thereof:

               "Trustee" shall mean the bank or trust  company appointed as
          trustee in a resolution  of the City Council of the  City adopted
          prior to the first issuance of the Bonds, its successors in trust
          and  their assigns.  "Principal Office" of the Trustee shall mean
          the principal corporate trust office of the Trustee, which office
          at  the  date of  acceptance by  the  Trustee of  the  duties and
          obligations imposed on  the Trustee by this Ordinance  is located
          at the address specified in such resolution.

               Section 1.02.  Findings,    Declarations,    Determinations,
          Approvals and Authorizations.  It is hereby found and  determined
          that:

               (1)       The City is authorized and empowered under the Act
          to issue and sell  the Bonds authorized under this  Ordinance and
          to enter  into the Sale Agreement  and the same  will further the
          intent of the Act.

               (2)       The Facilities are located  within 15 miles of the
          corporate  limits of the City and not within the corporate limits
          of any municipality.

               (3)       The  amount  necessary in  each  year  to pay  the
          principal of and premium, if any, and interest (excluding accrued
          interest and purchase premium, if any, to be paid  by the initial
          purchasers of the Bonds) on the Bonds is equal to  the portion of
          the purchase price of the Facilities refinanced with the proceeds
          of the Bonds in each such year required to be paid by the Company
          to the Trustee  by Section 5.02 of the Sale Agreement.   The City
          Council  shall determine  and set  forth in a  resolution adopted
          prior to the first issuance of Bonds the amount necessary  to pay
          in each year the principal of and interest on the Bonds.

               (4)       It is not advisable  or necessary to establish any
          reserve  fund in connection with  the retirement of  the Bonds or
          the  maintenance of the Facilities  and no reserve  fund has been
          established  for the Bonds.  The Sale Agreement provides that, as
          purchaser  of an  undivided interest in  the Facilities  from the
          City,  the Company  shall  exercise all  of  its rights,  powers,
          elections and  options under  the Plant  Agreements to  cause the
          Facilities to be maintained in  good repair and to keep or  cause
          to  be kept the Facilities  properly insured, and  under the Sale
          Agreement the Company is obligated to make payments that shall be
          at least sufficient to pay before  the same shall become due,  as
          set forth in subsection (3) above,  the principal of and premium,
          if any, and interest on the Bonds.

               (5)       The  City shall  not operate  the Facilities  as a
          business  or in  any  manner except  as  seller of  an  undivided
          interest therein under the Sale Agreement.

               (6)       The Bonds shall not  be the general obligations of
          the City within the  meaning of Article 9, Sections 12 and  13 of
          the  Constitution of  New Mexico,  shall be  payable by  the City
          solely from the Receipts and Revenues  of the City from the  Sale
          Agreement, and  the Bonds shall never  constitute an indebtedness
          of  the City  within  the  meaning  of any  State  constitutional
          provision or statutory limitation,  and shall never constitute or
          give rise  to any  pecuniary liability of  the City  or a  charge
          against  its general credit or taxing powers, and such fact shall
          be plainly stated on the face of each such Bond.

               (7)       In connection with the authorization, issuance and
          sale  of the Bonds pursuant to this Ordinance, it is advantageous
          that  the sale thereof be  private rather than  public within the
          meaning of the Act.

               (8)       The Mayor and the City Clerk are, and each of them
          is,  authorized  and  directed  to  cause this  Ordinance  to  be
          published one time by title and a general summary of the  subject
          matter contained herein in the manner provided by Section 3-17-5,
          New  Mexico Statutes  Annotated 1978.   This  Ordinance  shall be
          effective five days after it has been so published.

               (9)       The  authority previously granted by resolution on
          February 25, 1997  to the Mayor and the City  Clerk to cause this
          Ordinance in proposed form  to be published by title  and subject
          matter  in  the manner  provided  by  Section 3-17-3, New  Mexico
          Statutes Annotated 1978, is hereby confirmed and such publication
          is hereby adopted, ratified and confirmed.

               (10) The  Trustee,  Paying  Agent  and  Registrar  shall  be
          designated by a resolution  of the City Council adopted  prior to
          the first issuance of Bonds under this Ordinance.

               (11) The Mayor, the City Clerk and the City Treasurer or the
          Deputy City Treasurer are authorized to take all action necessary
          or appropriate  to effectuate  the provisions of  this Ordinance,
          including  without  limiting  the  generality  of the  foregoing,
          preparation  of  the  Bonds,  the execution,  delivery,  and,  if
          required  or   desirable,  the  filing  and   recording  of  such
          documents, instruments, financing statements and  certificates as
          are  required by this Ordinance and as may reasonably be required
          by the purchasers of  the Bonds, including, without limiting  the
          generality of the foregoing, certificates relating to the signing
          of the Bonds, the tenure and identity of the municipal officials,
          the  delivery of  the  Bonds and  payment  therefor, and,  if  in
          accordance  with the facts, the absence of litigation, pending or
          threatened, affecting the  validity of the Bonds, and the absence
          and existence of  factors affecting the exemption  of interest on
          the  Bonds from federal income  taxation, and, upon  or after the
          effective date  of this  Ordinance,  to execute  and deliver  the
          Bonds in accordance with this Ordinance and to do and cause to be
          done any and all acts and things necessary or proper for carrying
          out  the transactions  contemplated  by this  Ordinance, and  all
          actions taken pursuant to such authorization are hereby ratified,
          approved and confirmed.


                                      ARTICLE II

                                      THE BONDS

               Section 2.01.  Creation   of   Bonds.     There   is  hereby
          authorized  and created under this Ordinance,  for the purpose of
          providing  moneys to refund, pay  and redeem the  Prior Bonds, an
          issue of Bonds,  entitled to the benefit, protection and security
          of this  Ordinance, in the  aggregate principal amount  of Eighty
          Million Four Hundred Ten Thousand Dollars ($80,410,000).  Each of
          the Bonds shall be  designated by the title "City  of Farmington,
          New Mexico Pollution Control  Revenue Bond, 1997 Series A (Tucson
          Electric  Power Company  San  Juan Project)".    The Bonds  shall
          mature in such amounts on such date or dates not exceeding thirty
          years from  the date of  the Bonds, and  shall bear such  rate or
          rates  of  interest from  their  date,  payable semi-annually  on
          October 1 and April 1 of each year, commencing on October 1, 1997
          until  payment of the principal  thereof shall have  been made or
          duly provided  for  in accordance  with  the provisions  of  this
          Ordinance, all as shall be set forth in a resolution  of the City
          Council  adopted prior  to  the initial  issuance  of the  Bonds,
          provided  that such interest rate  or rates shall  not exceed the
          maximum  interest  rate  of  10%  per annum.    Unless  otherwise
          provided  in such resolution of the City Council adopted prior to
          the  issuance  of  the Bonds,  interest  on  the  Bonds shall  be
          calculated  on the basis of  a 360-day year  consisting of twelve
          30-day months.

               Section 2.02.  Form of Bonds.  Bonds shall be  authenticated
          and delivered hereunder solely  as fully registered bonds without
          coupons  in  the denomination  of  $5,000  or integral  multiples
          thereof.  Bonds shall  be numbered as determined by  the Trustee.
          Bonds  authenticated prior  to  the first  interest payment  date
          shall be dated  April 1, 1997  or such other  date as may  be set
          forth in a  resolution of the City  Council adopted prior to  the
          initial  issuance  of  the  Bonds.   Bonds  authenticated  on  or
          subsequent  to the first  interest payment date  thereon shall be
          dated  the interest  payment  date  next  preceding the  date  of
          authentication thereof, unless such date  of authentication shall
          be an  interest payment date to  which interest on the  Bonds has
          been paid in full or duly provided for, in which  case they shall
          be dated such date of authentication; provided, however, that if,
          as shown  by the records  of the Trustee,  interest on the  Bonds
          shall  be  in   default,  Bonds  issued  in  exchange  for  Bonds
          surrendered for transfer or  exchange shall be dated the  date to
          which interest has been paid in full on the Bonds surrendered.

               Principal  of and premium, if any, on Bonds shall be payable
          to  the Owners of such  Bonds upon presentation  and surrender of
          such Bonds at  the Principal  Office of the  Paying Agent or  any
          Co-Paying Agent.   Interest on the  Bonds shall be paid  by check
          drawn  upon the Paying  Agent and  mailed to  the Owners  of such
          Bonds as of the close of business on the Record Date with respect
          to each interest payment date at the registered addresses of such
          Owners as they  shall appear as of the close  of business on such
          Record  Date on  the  registration books  maintained pursuant  to
          Section 2.08 hereof notwithstanding  the cancellation of any such
          Bond upon  any exchange or registration of transfer subsequent to
          such  Record Date, except  that if and  to the extent  that there
          should be a default on the payment of interest on  any Bond, such
          defaulted interest shall be paid to the Owners in whose name such
          Bond   (or  any  Bond  or  Bonds  issued  upon  any  exchange  or
          registration  of transfer thereof) is  registered as of the close
          of business on a date selected by the Trustee in  its discretion,
          but not more than 15 days or less than 10 days  prior to the date
          of  payment  of  such  defaulted  interest;  notwithstanding  the
          foregoing, upon  request to the Paying  Agent by an Owner  of not
          less  than $1,000,000  in  aggregate principal  amount of  Bonds,
          interest on such Bonds  and, after presentation and  surrender of
          such Bonds, the principal thereof shall be paid to such Owner  by
          wire transfer  to the  account maintained within  the continental
          United States specified by such Owner or, if such Owner maintains
          an account with  the entity  acting as Paying  Agent, by  deposit
          into  such account.   Payment as aforesaid shall  be made in such
          coin or  currency of  the  United States  of America  as, at  the
          respective  times  of  payment, shall  be  legal  tender  for the
          payment of public and private debts.

               The  Bonds and the form for registration of transfer and the
          form  of certificate of authentication to be printed on the Bonds
          are  to  be  in substantially  the  forms  thereof  set forth  in
          Exhibits  A, B  and  C hereto,  respectively,  with necessary  or
          appropriate variations, omissions and  insertions as permitted or
          required by this Ordinance.

               Section 2.03.  Execution of  Bonds.    The  Bonds  shall  be
          executed  on behalf  of the  City by its  Mayor and  Treasurer or
          Deputy  City  Treasurer  and  shall have  affixed,  impressed  or
          reproduced  thereon the corporate seal of the City which shall be
          attested  by the  City Clerk.   Each  of the  foregoing officers,
          after filing  with the Secretary  of State  of the  State of  New
          Mexico the manual signature of such officer certified under oath,
          may  execute or  cause to be  executed or  attest or  cause to be
          attested  with a  facsimile  signature  in  lieu  of  his  manual
          signature the Bonds.

               In  case  any  officer of  the  City  whose  signature or  a
          facsimile  of whose  signature shall  appear  on the  Bonds shall
          cease to be such officer before the authentication by the Trustee
          and  delivery of  such Bonds,  such signature  or such  facsimile
          shall nevertheless be valid and sufficient for  all purposes, the
          same  as if such officer  had remained in  office until delivery;
          and any Bond may be signed on behalf of  the City by such persons
          as, at  the time of execution  of such Bond, shall  be the proper
          officers of the City, even though at  the date of such Bond or of
          the  execution and delivery of this Ordinance any such person was
          not such officer.

               Section 2.04.  Authentication of Bonds.   Only such Bonds as
          shall  have  endorsed  thereon  a  certificate  of authentication
          substantially  in the  form set  forth in  Exhibit C  hereto duly
          executed by the Trustee shall be entitled to any right or benefit
          under this Ordinance.   No Bond shall be  valid or obligatory for
          any purpose  unless and until such  certificate of authentication
          shall have been duly  executed by the Trustee, and  such executed
          certificate  of authentication of the Trustee upon any such Bonds
          shall   be  conclusive   evidence   that  such   Bond  has   been
          authenticated and delivered under  this Ordinance.  The Trustee's
          certificate of authentication on any Bond shall be deemed to have
          been executed by it if signed with an authorized signature of the
          Trustee, but it shall not be  necessary that the same person sign
          the  certificate of  authentication on  all of  the Bonds  issued
          hereunder.  This  Section 2.04 is  subject to  the provisions  of
          Section 10.17 hereof.

               Section 2.05.  Bonds Not General Obligations.  The Bonds and
          the  premium, if  any,  and the  interest  thereon shall  not  be
          general  obligations  or  indebtedness  of the  City  within  the
          meaning of  Article 9, Sections 12 and 13 of  the Constitution of
          the  State of New Mexico, but shall be limited obligations of the
          City  payable solely from the  Receipts and Revenues  of the City
          from the Sale  Agreement and  the other  moneys pledged  therefor
          under this Ordinance.   The Bonds  and the  premium, if any,  and
          interest thereon  shall never  constitute an indebtedness  of the
          City within the  meaning of any state constitutional provision or
          statutory limitation, and shall never constitute nor give rise to
          a pecuniary liability of the City or a charge against its general
          credit or taxing powers, and such fact shall be plainly stated on
          the face of each Bond.

               Section 2.06.  Prerequisites  to  Authentication  of  Bonds.
          The City shall execute and deliver to the Trustee and the Trustee
          shall  authenticate  the Bonds  and  deliver  said  Bonds to  the
          initial purchasers thereof as may be directed hereinafter in this
          Section 2.06.

               Prior to the delivery on original issuance by the Trustee of
          any  authenticated Bonds there shall be or have been delivered to
          the Trustee:

                    (a) a duly certified copy of the Ordinance;

                    (b)  an original  duly executed  counterpart or  a duly
               certified copy of the Sale Agreement;

                    (c)  a  request and  authorization  to  the Trustee  on
               behalf of the City, signed by its Mayor, to authenticate and
               deliver  the   Bonds  in  the  aggregate   principal  amount
               determined by this Ordinance  to the purchaser or purchasers
               therein identified upon payment to the Trustee, but  for the
               account of the City, of a sum specified in such  request and
               authorization plus any accrued interest on such Bonds to the
               date  of   delivery,  in  the  aggregate   principal  amount
               determined by this Ordinance; and

                    (d)  a  written statement  on  behalf  of the  Company,
               executed  by  the  President,  any  Vice  President  or  the
               Treasurer, (i)  approving the  issuance and delivery  of the
               Bonds and  (ii) consenting to  each and  every provision  of
               this Ordinance.

               Section 2.07.  Lost or Destroyed Bonds  or Bonds Canceled in
          Error.   If any Bond, whether in temporary or definitive form, is
          lost  (whether  by  reason  of  theft  or  otherwise),  destroyed
          (whether  by   mutilation,  damage,  in  whole  or  in  part,  or
          otherwise) or canceled  in error,  the City may  execute and  the
          Trustee may authenticate a new Bond of like date and denomination
          and bearing a number not contemporaneously outstanding;  provided
          that (a) in the case  of any mutilated Bond, such  mutilated Bond
          shall first be surrendered to the Trustee and (b) in  the case of
          any lost  Bond or Bond destroyed  in whole, there shall  be first
          furnished  to the City, the  Trustee and the  Company evidence of
          such loss or  destruction.  In  every case, the  applicant for  a
          substitute  Bond shall  furnish  the City,  the  Trustee and  the
          Company such security or indemnity as  may be required by any  of
          them.  In the event any lost or destroyed Bond or a Bond canceled
          in error  shall have matured or  is about to mature,  or has been
          called for redemption,  instead of issuing a substitute  Bond the
          Trustee may, in  its discretion, pay  the same without  surrender
          thereof  if there  shall  be first  furnished  to the  City,  the
          Trustee  and the Company  evidence of  such loss,  destruction or
          cancellation,  together with  indemnity,  satisfactory  to  them.
          Upon  the issuance  of  any substitute  Bond,  the City  and  the
          Trustee may require the payment of a sum sufficient to  cover any
          tax  or other governmental charge that may be imposed in relation
          thereto.  The Trustee may charge  the Owner of any such Bond with
          the Trustee's reasonable fees and expenses in connection with any
          transaction described in this Section 2.07.

               Every substitute  Bond issued pursuant to  the provisions of
          this Section  2.07 by virtue of  the fact that any  Bond is lost,
          destroyed  or canceled  in error  shall constitute  an additional
          contractual  obligation of the City,  whether or not  the Bond so
          lost, destroyed or canceled shall be at any time enforceable, and
          shall be entitled to  all the benefits of this  Ordinance equally
          and  proportionately with  any and  all  other Bonds  duly issued
          hereunder.  All  Bonds shall be held  and owned upon  the express
          condition that,  to the  extent permitted  by law,  the foregoing
          provisions  are  exclusive with  respect  to  the replacement  or
          payment  of   lost,  destroyed  or  improperly   canceled  Bonds,
          notwithstanding  any law  or  statute now  existing or  hereafter
          enacted.

               Section 2.08.  Transfer, Registration and Exchange of Bonds.
          The Registrar shall  maintain and keep, at its  Principal Office,
          books for the registration and registration of transfer of Bonds,
          which, at all reasonable  times, shall be open for  inspection by
          the City, the Trustee and the Company; and, upon presentation for
          such purpose of any Bond entitled to registration or registration
          of  transfer at  the  Principal  Office  of  the  Registrar,  the
          Registrar shall register or register  the transfer in such books,
          under such reasonable regulations as the Registrar may prescribe.
          The  Registrar shall make all necessary  provisions to permit the
          exchange  or registration of  transfer of Bonds  at its Principal
          Office.

               The  transfer  of  any  Bond shall  be  registered  upon the
          registration books of the Registrar at the written request of the
          Owner thereof  or his attorney  duly authorized in  writing, upon
          surrender  thereof  at the  Principal  Office  of the  Registrar,
          together with  a written  instrument of transfer  satisfactory to
          the Registrar duly executed  by the Owner or his  duly authorized
          attorney.   Upon the registration of transfer of any such Bond or
          Bonds, the City  shall issue  in the name  of the transferee,  in
          authorized  denominations,  a  new  Bond or  Bonds  in  the  same
          aggregate principal amount as the surrendered Bond or Bonds.

               The City, the Trustee, the Paying Agent, any Co-Paying Agent
          and the Registrar may deem and treat the Owner of any Bond as the
          absolute owner of such  Bond, whether such Bond shall  be overdue
          or not, for  the purpose of receiving  payment of, or on  account
          of, the principal of and premium, if any, and, except as provided
          in Section 2.02  hereof, interest on such Bond  and for all other
          purposes, and  neither the City,  the Trustee, the  Paying Agent,
          any  Co-Paying Agent nor the  Registrar shall be  affected by any
          notice to  the contrary.  All  such payments so made  to any such
          Owner or upon his order  shall be valid and effective to  satisfy
          and discharge  the liability upon such Bond  to the extent of the
          sum or sums so paid.

               Bonds, upon surrender thereof at the Principal Office of the
          Registrar may, at the  option of the Owner thereof,  be exchanged
          for  an  equal  aggregate  principal   amount  of  Bonds  of  any
          authorized denomination.

               In all cases in  which the privilege of exchanging  Bonds or
          registering the  transfer of Bonds  is exercised, the  City shall
          execute and the Trustee  shall authenticate and deliver  Bonds in
          accordance with the provisions of this Ordinance.  For every such
          exchange or registration of  transfer of Bonds, whether temporary
          or definitive, the City, the Registrar, or the Trustee may make a
          charge  sufficient  to   reimburse  it  for  any   tax  or  other
          governmental charge  required  to be  paid with  respect to  such
          exchange  or registration of transfer, which sum or sums shall be
          paid by  the person requesting  such exchange or  registration of
          transfer  as  a  condition  precedent  to  the  exercise  of  the
          privilege of  making such  exchange or registration  of transfer.
          The  Registrar  shall  not be  obligated  (a)  to  make any  such
          exchange  or registration of transfer of Bonds during the fifteen
          (15) days next preceding the date on which notice of any proposed
          redemption  of  Bonds  is given,  (b)  to  make  any exchange  or
          registration of transfer of any Bonds called for redemption.

               The Bonds are to be initially registered in the name of Cede
          & Co.,  as nominee for the  Depositary.  Such Bonds  shall not be
          transferable or exchangeable, nor shall any purported transfer be
          registered, except as follows:

                    (a)  such  Bonds  may  be  transferred  in  whole,  and
               appropriate  registration  of  transfer  effected,  if  such
               transfer is by  such nominee  to the Depositary,  or by  the
               Depositary to another nominee thereof, or by any nominee  of
               the  Depositary to  any  other nominee  thereof,  or by  the
               Depositary   or  any  nominee   thereof  to   any  successor
               securities depositary or any nominee thereof; and

                    (b)  such Bond  may be  exchanged for  definitive Bonds
               registered in the respective names of the beneficial holders
               thereof,  and  thereafter   shall  be  transferable  without
               restriction, if:

                    (i)  the Depositary  shall have notified the  City, the
               Company  and the Trustee that  it is unwilling  or unable to
               continue  to act  as securities  depositary with  respect to
               such Bonds and the  Trustee shall not have been  notified by
               the City at the direction of the Company within a reasonable
               time after the identity of a successor securities depositary
               with respect to such Bonds;

                    (ii)  the Company shall have delivered to the Trustee a
               written instrument to the effect that such Bonds shall be so
               exchangeable on and after a date specified therein; or

                    (iii)  (1) an Event of  Default shall have occurred and
               be  continuing, (2) the  Trustee shall have  given notice of
               such  Event of Default pursuant  to Section 10.19 hereof and
               (3) there shall have been delivered to the City, the Company
               and the Trustee an opinion of counsel to the effect that the
               interests of the beneficial owners of such Bonds in  respect
               thereof  will  be  materially  impaired unless  such  owners
               become owners of definitive Bonds.

               The  Bonds delivered to the Depositary  may contain a legend
          reflecting the foregoing restrictions on registration of transfer
          and exchange.

               Section 2.09.  Other  Obligations.     The  City   expressly
          reserves the  right to issue, to the extent permitted by law, but
          shall  not  be  obligated  to issue,  obligations  under  another
          ordinance or ordinances  to provide additional  funds to pay  the
          cost  of construction of  the Facilities or to  refund all or any
          principal amount of the Bonds, or any combination thereof.

               Section 2.10.  Temporary Bonds.   Pending the preparation of
          definitive Bonds,  the  City may  execute and  the Trustee  shall
          authenticate and deliver temporary  Bonds.  Temporary Bonds shall
          be  issuable   as  registered  Bonds  without   coupons,  of  any
          authorized  denomination, and  substantially in  the form  of the
          definitive  Bonds  but  with   such  omissions,  insertions   and
          variations  as may be appropriate for temporary Bonds, all as may
          be  determined by  the City.   Temporary  Bonds may  contain such
          reference  to  any   provisions  of  this  Ordinance  as  may  be
          appropriate.   Every temporary Bond shall be executed by the City
          and  be authenticated by the Trustee upon the same conditions and
          in  substantially the same manner,  and with like  effect, as the
          definitive Bonds.   As  promptly as  practicable  the City  shall
          execute   and  shall  furnish   definitive  Bonds  and  thereupon
          temporary Bonds  may be surrendered in  exchange therefor without
          charge  at the Principal Office  of the Trustee,  and the Trustee
          shall  authenticate and  deliver in  exchange for  such temporary
          Bonds a like  aggregate principal amount  of definitive Bonds  of
          authorized denominations.  Until so exchanged the temporary Bonds
          shall  be entitled to the  same benefits under  this Ordinance as
          definitive Bonds.

               Section 2.11.  Cancellation of Bonds.  All Bonds which shall
          have  been surrendered to the Paying Agent or any Co-Paying Agent
          for  payment or redemption, and  all Bonds which  shall have been
          surrendered  to the  Registrar  for exchange  or registration  of
          transfer,  shall be  delivered to  the Trustee  for cancellation.
          All  Bonds   delivered  to  or   acquired  by  the   Trustee  for
          cancellation shall be canceled and destroyed by the Trustee.  The
          Trustee  shall  furnish  to  the  City,  the  Paying  Agent,  the
          Registrar and the Company counterparts of certificates evidencing
          such cancellation  and destruction  and specifying such  Bonds by
          number.

               Section 2.12.  Payment  of Principal and  Interest.  For the
          payment of interest  on the  Bonds, the  City shall  cause to  be
          deposited in the Bond Fund, on each interest payment date, solely
          out of  the  Receipts and  Revenues  of the  City  from the  Sale
          Agreement and other moneys pledged therefor, an amount sufficient
          to pay the interest  to become due on such interest payment date.
          The obligation of the City  to cause any such deposit to  be made
          hereunder  shall be reduced  by the amount of  moneys in the Bond
          Fund available on such  interest payment date for the  payment of
          interest on the Bonds.

               For the payment of the principal of the Bonds upon maturity,
          the  City shall cause  to be deposited  in the Bond  Fund, on the
          stated  or  accelerated  date  of  maturity,  solely  out  of the
          Receipts and Revenues  of the  City from the  Sale Agreement  and
          other moneys  pledged therefor, an  amount sufficient to  pay the
          principal of the Bonds.  The obligation of the City  to cause any
          such deposit to be made hereunder shall be  reduced by the amount
          of moneys in the Bond Fund available on the maturity date for the
          payment of the principal of the Bonds.

               Section 2.13.  Bonds  Equally  Secured.    The  Trust Estate
          shall be for  the equal and  proportionate benefit, security  and
          protection of all Owners of the Bonds issued under and secured by
          this Ordinance  without privilege, priority or  distinction as to
          the lien  or otherwise of any of the Bonds  over any other of the
          Bonds, all upon the terms stated herein.

               Section 2.14.  Applicability   of   Book-Entry   Provisions.
          Anything in  this Ordinance to the  contrary notwithstanding, (a)
          the provisions  of the Blanket Issuer  Letter of Representations,
          dated December 5, 1996, between the City and The Depository Trust
          Company  relating to the manner of and procedures for payment and
          redemption  of Bonds and related  matters shall apply  so long as
          such Depositary shall be  the Owner of all Outstanding  Bonds and
          (b) the City, the Trustee or the Paying Agent, as applicable, may
          enter  into a  similar agreement,  on  terms satisfactory  to the
          Company,  with  any  subsequent  Depositary  and  the  provisions
          thereof shall apply so long as such Depositary shall be the Owner
          of all Outstanding Bonds.


                                     ARTICLE III

                                 REDEMPTION OF BONDS

               Section 3.01.  Redemption Provisions.   (a) The Bonds  shall
          be  subject to  redemption by the  City, at the  direction of the
          Company, on any date on or after October 1, 2007  in whole at any
          time or in  part from time to time, at  the applicable redemption
          price (expressed as a  percentage of principal amount) set  forth
          below, plus accrued interest to the redemption date:

                         Redemption Period                  Redemption
          Price
                         ----------------                   ---------------
          -

               October 1, 2007 through September 30, 2008          102%
               October 1, 2008 through September 30, 2009          101%
               October 1, 2009 and thereafter                      100%

               (b)   The Bonds shall be subject  to redemption by the City,
          at the  direction of the  Company, in  whole at any  time at  the
          principal amount thereof plus  accrued interest to the redemption
          date, if:

                    (i)  the  Company  shall   have  determined  that   the
               continued   operation  of   the   Plant  is   impracticable,
               uneconomical or undesirable for any reason;

                    (ii)  the  Company  shall   have  determined  that  the
               continued  operation  of  the  Facilities  is impracticable,
               uneconomical  or undesirable  due to  (A) the  imposition of
               taxes,  other than  ad valorem  taxes currently  levied upon
               privately owned  property used for the  same general purpose
               as  the Facilities,  or  other liabilities  or burdens  with
               respect to the Facilities  or operation thereof, (B) changes
               in  technology,   in   environmental  standards   or   legal
               requirements or in the  economic availability of  materials,
               supplies, equipment or labor or (C) destruction of or damage
               to all or part of the Facilities;

                    (iii)  all or  substantially all  of the  Facilities or
               the Plant  shall  have been  condemned or  taken by  eminent
               domain; or

                    (iv)  the operation  of  the Facilities  or  the  Plant
               shall  have  been  enjoined  or shall  have  otherwise  been
               prohibited by,  or shall  conflict with, any  order, decree,
               rule or  regulation of any court or of any federal, state or
               local   regulatory  body,  administrative  agency  or  other
               governmental body.

               (c)  The Bonds  shall be subject to  mandatory redemption by
          the City, at the  principal amount thereof plus accrued  interest
          to the redemption date, on the 180th day (or such earlier date as
          may  be designated by the Company) after a final determination by
          a court of competent jurisdiction or an administrative agency, to
          the  effect that,  as a  result of  a failure  by the  Company to
          perform  or  observe  any covenant,  agreement  or representation
          contained  in the  Sale Agreement,  the interest  payable on  the
          Bonds  is included for federal  income tax purposes  in the gross
          income of the owners thereof, other than any owner of  a Bond who
          is a "substantial user"  of the Facilities or a  "related person"
          within  the meaning of Section 103(b)(13)  of the 1954  Code.  No
          determination  by any  court  or administrative  agency shall  be
          considered final for the purposes of this Section 3.01 (b) unless
          the Company shall have been given timely notice of the proceeding
          which  resulted  in  such  determination and  an  opportunity  to
          participate  in such  proceeding, either  directly or  through an
          owner of a Bond, and until the conclusion of any appellate review
          sought by any party to  such proceeding or the expiration  of the
          time  for seeking such review. The Bonds shall be redeemed either
          in whole  or in part in  such principal amount that  the interest
          payable on the Bonds  remaining outstanding after such redemption
          would not  be included in the gross  income of any owner thereof,
          other than an owner of a Bond  who is a "substantial user" of the
          Facilities  or   a  "related   person"  within  the   meaning  of
          Section 103(b)(13) of the 1954 Code.

               Section 3.02.  Selection of  Bonds to be Redeemed.   If less
          than  all  the Bonds  shall be  called  for redemption  under any
          provision of  this Ordinance permitting such  partial redemption,
          the particular Bonds or portions of Bonds to be redeemed shall be
          selected  by the Trustee,  in such manner  as the  Trustee in its
          discretion  may deem  proper, in  the aggregate  principal amount
          designated to the Trustee by the Company or otherwise as required
          by  this Ordinance; provided, however, that if, as indicated in a
          certificate of an Authorized Company Representative delivered  to
          the Trustee, the Company shall have offered to purchase all Bonds
          then  Outstanding and less than all such Bonds have been tendered
          to the Company for  such purchase, the Trustee, at  the direction
          of  an   Authorized  Company  Representative,  shall  select  for
          redemption  all such Bonds which shall not have been so tendered;
          and  provided,  further,  that the  portion  of  any  Bond to  be
          redeemed  shall  be in  the principal  amount  of $5,000  or some
          integral  multiple  thereof  and  that, in  selecting  Bonds  for
          redemption,  the Trustee  shall treat  each Bond  as representing
          that  number of Bonds which is obtained by dividing the principal
          amount of such Bond by  $5,000.  If it is determined  that one or
          more,  but not  all,  of the  $5,000  units of  principal  amount
          represented  by any  such Bond  is to  be called  for redemption,
          then,  upon notice  of intention  to redeem  such $5,000  unit or
          units, the Owner of such Bond shall forthwith surrender such Bond
          to the Paying  Agent or  any Co-Paying Agent  for (y) payment  to
          such  Owner of  the  redemption price  (including the  redemption
          premium,  if  any, and  accrued interest  to  the date  fixed for
          redemption)  of  the $5,000  unit  or units  of  principal amount
          called for  redemption and (z)  delivery to such  Owner of a  new
          Bond or Bonds in the aggregate principal amount of the unredeemed
          balance  of the  principal  amount  of  any  such  Bond.    Bonds
          representing the  unredeemed balance  of the principal  amount of
          any  such Bond shall be  delivered to the  Owner thereof, without
          charge therefor.  If the Owner of any such Bond of a denomination
          greater than $5,000 shall fail to present such Bond to the Paying
          Agent  or  any  Co-Paying  Agent  for  payment  and  exchange  as
          aforesaid, such Bond shall,  nevertheless, become due and payable
          on the date fixed for redemption to the extent of the $5,000 unit
          or units of principal  amount called for redemption (and  to that
          extent only).

               Section 3.03.  Procedure  for Redemption.   (a) In the event
          any of the  Bonds are  called for redemption,  the Trustee  shall
          give notice, in  the name of the City, of  the redemption of such
          Bonds, which notice shall  (i) specify the Bonds to  be redeemed,
          the  redemption  date, the  redemption  price, and  the  place or
          places  where amounts  due upon  such redemption will  be payable
          (which shall be  the Principal Office of the Paying  Agent or any
          Co-Paying Agent) and,  if less than  all of the  Bonds are to  be
          redeemed,  the numbers  of  the Bonds  to  be redeemed,  and  the
          portion of  the principal amount  of any Bond  to be redeemed  in
          part, (ii) state any condition to such redemption and (iii) state
          that on the  redemption date,  and upon the  satisfaction of  any
          such condition,  the  Bonds or  portions thereof  to be  redeemed
          shall cease  to bear  interest.  Such  notice may  set forth  any
          additional information relating to  such redemption.  Such notice
          shall  be given by  Mail at least  thirty (30) days  prior to the
          date  fixed for  redemption  to the  Owners of  the  Bonds to  be
          redeemed;  provided,  however, that  failure  duly  to give  such
          Notice  by  Mail, or  any defect  therein,  shall not  affect the
          validity of any  proceedings for  the redemption of  Bonds as  to
          which there  shall have  been no  such failure or  defect.   If a
          notice of redemption shall be unconditional, or if the conditions
          of a conditional notice or redemption shall have been  satisfied,
          then  upon presentation  and  surrender of  Bonds  so called  for
          redemption at the place or places of payment, such Bonds shall be
          redeemed.   The Trustee shall  promptly deliver to  the Company a
          copy of each such notice of redemption.

               (b) With respect  to any  notice of redemption  of Bonds  in
          accordance  with subsection  (a) or  (b) of  Section 3.01 hereof,
          unless,  upon  the giving  of such  notice,  such Bonds  shall be
          deemed  to  have been  paid within  the  meaning of  Article VIII
          hereof,  such notice  shall state  that such redemption  shall be
          conditional upon the receipt,  by the Trustee on or prior  to the
          opening of business  on the  date fixed for  such redemption,  of
          moneys  sufficient to pay the  principal of and  premium, if any,
          and  interest on  such Bonds  to be  redeemed,  and that  if such
          moneys shall not have been so received said notice shall be of no
          force and  effect and the  City shall  not be required  to redeem
          such Bonds.  In the event that such notice of redemption contains
          such  a  condition  and such  moneys  are  not  so received,  the
          redemption  shall  not be  made and  the  Trustee shall  within a
          reasonable time  thereafter give notice,  in the manner  in which
          the notice of redemption was given,  that such moneys were not so
          received.

               (c)  Any Bonds and  portions of Bonds  which have been  duly
          selected  for redemption  shall  cease to  bear  interest on  the
          specified redemption date provided  that moneys sufficient to pay
          the principal of,  premium, if  any, and interest  on such  Bonds
          shall be  on  deposit with  the  Trustee on  the date  fixed  for
          redemption  so  that such  Bonds  will be  deemed  to be  paid in
          accordance with Article VIII hereof.

               Section 3.04.  No   Partial    Redemption   After   Default.
          Anything in  this Ordinance  to the contrary  notwithstanding, if
          there shall have occurred  and be continuing an Event  of Default
          defined in clause (a)  or (b) of  the first paragraph of  Section
          9.01 hereof, there shall be no redemption of less than all of the
          Bonds  at the time Outstanding other than a partial redemption in
          connection with an  offer by  the Company to  purchase all  Bonds
          Outstanding as contemplated  in the  first proviso  to the  first
          sentence of Section 3.02 hereof.

               Section 3.05.  Payment  of  Redemption   Price.    For   the
          redemption  of any  of  the Bonds,  the City  shall  cause to  be
          deposited in the Bond Fund, on the redemption date, solely out of
          the Receipts and Revenues of the City from the Sale Agreement, an
          amount  sufficient to pay the  principal of and  premium, if any,
          and  interest to  become  due  on  such  redemption  date.    The
          obligation  of the  City to  cause any  such deposit  to be  made
          hereunder  shall be reduced  by the amount of  moneys in the Bond
          Fund available  on  such  redemption  date  for  payment  of  the
          principal of and  premium, if  any, and accrued  interest on  the
          Bonds to be redeemed.


                                      ARTICLE IV

                                    THE BOND FUND

               Section 4.01.  Creation  of  Bond  Fund.   There  is  hereby
          created and established with the Trustee a trust fund in the name
          of  the City  to be  designated "City  of Farmington,  New Mexico
          Pollution Control Revenue  Bonds, 1997 Series A  (Tucson Electric
          Power  Company San Juan Project)  Bond Fund".   The Trustee shall
          establish  and  maintain within  the  Bond  Fund such  segregated
          accounts and  subaccounts as  may be  requested by  an Authorized
          Company  Representative.    The Bond  Fund,  and  all moneys  and
          certificated securities therein, shall  be kept in the possession
          of the Trustee.

               Section 4.02.  Liens.   The City  shall not create  any lien
          upon the  Bond Fund or upon the Receipts and Revenues of the City
          from the Sale Agreement other than the lien hereby created.

               Section 4.03.  Deposits into Bond Fund.   (a) There shall be
          deposited into the Bond Fund:

                    (i)  the accrued interest, if any, on the Bonds accrued
               to  the date  of delivery  thereof and  paid by  the initial
               purchasers thereof;

                    (ii) all Purchase Price Payments; and

                    (iii) all  other moneys  received by the  Trustee under
               and pursuant to any  provision of the Sale  Agreement, other
               than Sections 5.04, 5.05 and 8.05 thereof, or from any other
               source when  accompanied by  directions by the  Company that
               such moneys are to be paid into the Bond Fund;

               (b) All income or  other gain from the investment  of moneys
          in the Bond Fund shall be deposited into the Bond Fund.  

               Section 4.04.  Use of Moneys in Bond  Fund.  Moneys, if any,
          paid into the Bond Fund pursuant to clause (i) of Section 4.03(a)
          hereof shall be applied to the payment of interest on  the Bonds.
          Except as  otherwise provided  in Sections 4.06,  9.01 and  10.04
          hereof,  all other moneys in  the Bond Fund  constituting part of
          the Trust  Estate shall  be used  solely for  the payment  of the
          principal of and  premium, if any, and  interest on the Bonds  as
          the  same  shall  become  due  and  payable  at  maturity,   upon
          redemption or otherwise.

               Section 4.05.  Custody of Bond  Fund; Withdrawal of  Moneys.
          The  Bond Fund shall be in the custody  of the Trustee but in the
          name of  the City and the City  hereby authorizes and directs the
          Trustee  to withdraw from the Bond Fund and furnish to the Paying
          Agent funds constituting  part of the Trust  Estate sufficient to
          pay the  principal of and  premium, if  any, and interest  on the
          Bonds as the same  shall become due and payable, and  to withdraw
          from  the Bond  Fund funds  sufficient to  pay any  other amounts
          payable therefrom as the same shall become due and payable.

               Section 4.06.  Bonds Not  Presented  for Payment.    In  the
          event  any  Bonds shall  not be  presented  for payment  when the
          principal thereof and premium, if any, thereon become due, either
          at  maturity or  at  the date  fixed  for redemption  thereof  or
          otherwise, if moneys sufficient to pay such Bonds are held by the
          Paying Agent or any Co-Paying Agent for the benefit of the Owners
          thereof, the Paying Agent shall segregate and hold such moneys in
          trust, without liability for interest thereon, for the benefit of
          the Owners  of such Bonds,  who shall, except as  provided in the
          following paragraph, thereafter be restricted exclusively to such
          fund  or  funds for  the satisfaction  of  any claim  of whatever
          nature on their  part under  this Ordinance or  relating to  said
          Bonds.

               Any moneys  which the Paying Agent shall  segregate and hold
          in trust for the payment of the principal of and premium, if any,
          or  interest on  any Bond  and remaining  unclaimed for  one year
          after such principal, premium, if any, or interest has become due
          and  payable shall,  upon  the Company's  written request  to the
          Paying Agent, be paid to the Company, with notice  to the Trustee
          of  such action; provided, however,  that before the Paying Agent
          shall  be required to make  any such repayment,  the Paying Agent
          may, and at the request  of the Trustee shall, at the  expense of
          the Company cause  notice to be given once by  Publication to the
          effect that such money  remains unclaimed and that, after  a date
          specified  therein, which shall not be less than thirty (30) days
          from  the  date  of such  notice  by  Publication, any  unclaimed
          balance  of  such  moneys then  remaining  will  be  paid to  the
          Company.    After the  payment of  such  unclaimed moneys  to the
          Company, the Owner of such Bond shall thereafter look only to the
          Company for the payment  thereof, and all liability of  the City,
          the  Trustee and  the Paying  Agent with  respect to  such moneys
          shall thereupon cease.

               Section 4.07.  Moneys  Held   in  Trust.    All  moneys  and
          Investment Securities held by  the Trustee in the Bond  Fund, and
          all moneys  required to be deposited with  or paid to the Trustee
          for deposit into the Bond Fund, and all moneys withdrawn from the
          Bond  Fund and  held  by  the  Trustee,  the  Paying  Agent,  any
          Co-Paying Agent, shall be  held by the Trustee, the  Paying Agent
          or any  Co-Paying Agent, as the  case may be, in  trust, and such
          moneys and Investment Securities (other than moneys held pursuant
          to Section 4.06 hereof  and moneys or Investment Securities  held
          in the Rebate Fund established  in furtherance of the obligations
          of  the Company  under clause  (b) of  Section 6.04  of the  Sale
          Agreement), while so held or so required to be deposited or paid,
          shall constitute  part of the Trust Estate  and be subject to the
          lien  and  security interest  created  hereby  in  favor  of  the
          Trustee, for the  benefit of the Owners from time  to time of the
          Bonds.  The Company shall have no right, title or interest in the
          Bond Fund, except such rights as may arise after the right, title
          and interest  of the Trustee in  and to the Trust  Estate and all
          covenants,  agreements and  other obligations  of the  City under
          this Ordinance shall have ceased, terminated  and become void and
          shall  have  been satisfied  and  discharged  in accordance  with
          Article VIII hereof.


                                      ARTICLE V

                               DISPOSITION OF PROCEEDS

               Section 5.01.  Disposition of Proceeds.   The proceeds  from
          the issuance and  sale of the Bonds shall  be applied as provided
          in Section 4.03 of the Sale Agreement.


                                      ARTICLE VI

                                     INVESTMENTS

               Section 6.01.  Investments.   The  moneys in  the Bond  Fund
          shall,  at  the  direction  of  the  Company,  be   invested  and
          reinvested in Investment  Securities.  Any Investment  Securities
          may  be purchased  subject to  options or  other rights  in third
          parties to acquire the  same.  Subject to the  further provisions
          of  this  Section 6.01,  such investments  shall  be made  by the
          Trustee  as   directed  and  designated  by  the   Company  in  a
          certificate  of, or  telephonic  advice promptly  confirmed by  a
          certificate  of, an  Authorized Company  Representative.   As and
          when any amounts  thus invested may  be needed for  disbursements
          from  the Bond  Fund, the  Trustee shall  request the  Company to
          designate such investments to be sold or otherwise converted into
          cash to the  credit of the  Bond Fund as  shall be sufficient  to
          meet  such disbursement  requirements and  shall then  follow any
          directions   in  respect   thereto  of   an  Authorized   Company
          Representative.   As long as no  Event of Default  (as defined in
          Section 9.01 hereof) shall  have occurred and be continuing,  the
          Company shall have the  right to designate the investments  to be
          sold  and  to  otherwise  direct  the  Trustee  in  the  sale  or
          conversion to cash of the investments made with the moneys in the
          Bond Fund,  provided  that  the  Trustee  shall  be  entitled  to
          conclusively  assume the  absence of  any such  Event  of Default
          unless  it has notice thereof within the meaning of Section 10.05
          hereof.  


                                     ARTICLE VII

                                  GENERAL COVENANTS

               Section 7.01.  No  General  Obligations.    Each  and  every
          covenant herein made, including all covenants made in the various
          sections of  this Article VII,  is predicated upon  the condition
          that any obligation for the payment of money incurred by the City
          shall not be the  general obligation or indebtedness of  the City
          within  the  meaning  of Article 9,  Sections 12  and  13  of the
          Constitution  of  the  State  of  New  Mexico,  and  shall  never
          constitute  an indebtedness of the City within the meaning of any
          state constitutional provision or statutory limitation, and shall
          never  constitute nor give rise  to a pecuniary  liability of the
          City or a charge against its general credit or taxing powers, but
          shall  be  payable  by the  City  solely  from  the Receipts  and
          Revenues  of the City from the Sale Agreement, which are required
          to  be set  apart and  transferred to  the Bond Fund,  and which,
          along  with  the  balance   of  the  Trust  Estate,  are   hereby
          specifically  pledged to the payment thereof in the manner and to
          the  extent in this Ordinance specified, and nothing in the Bonds
          or  in this Ordinance shall  be considered as  pledging any other
          funds or assets of the City.

               The  City shall promptly cause  to be paid,  solely from the
          sources  stated herein, the principal of and premium, if any, and
          interest  on every Bond issued under this Ordinance at the place,
          on the dates and in the  manner provided herein and in said Bonds
          according to the true intent and meaning thereof.

               Section 7.02.  Performance   of   Covenants  of   the  City;
          Representations.   The City shall faithfully perform at all times
          any and  all covenants, undertakings, stipulations and provisions
          contained  in this  Ordinance, in  any and  every Bond  executed,
          authenticated  and delivered  hereunder, and  in all  proceedings
          pertaining  thereto.    The  City  represents  that  it  is  duly
          authorized  under the Constitution and  laws of the  State of New
          Mexico  to issue the Bonds  authorized hereby, to  enter into the
          Sale Agreement and  to adopt  this Ordinance, and  to pledge  and
          assign to the Trustee the Trust Estate, and that the Bonds in the
          hands of  the Owners thereof  are and  will be valid  and binding
          limited obligations of the City.

               Section 7.03.  Maintenance of Rights and  Powers; Compliance
          with Laws.   The City shall  at all times  maintain its corporate
          existence or  assure the assumption of its obligations under this
          Ordinance by any public  body succeeding to its powers  under the
          Act; and it  shall at all  times use its  best efforts to  comply
          with all valid acts, rules, regulations, orders and directions of
          any legislative, executive, administrative or judicial body known
          to it to be applicable to the Sale Agreement and this Ordinance.

               Section 7.04.  Enforcement  of  Obligations of  the Company;
          Amendments.    Upon  receipt  of written  notification  from  the
          Trustee, the City  shall cooperate with the  Trustee in enforcing
          the obligation of the Company to pay  or cause to be paid all the
          payments and other costs and charges payable by the Company under
          the Sale Agreement.  The City shall not enter into  any agreement
          with the Company  amending the Sale  Agreement without the  prior
          written consent of the Trustee and compliance with Sections 12.06
          and 12.07 of this Ordinance.

               Section 7.05.  Further  Instruments.   The City  shall, upon
          the  reasonable request of the Trustee, from time to time execute
          and deliver such further instruments and take such further action
          as may  be reasonable  and as  may be required  to carry  out the
          purposes  of  this Ordinance;  provided,  however,  that no  such
          instruments or actions shall pledge the credit or taxing power of
          the  State of  New  Mexico,  the  City  or  any  other  political
          subdivision of said State.

               Section 7.06.  No Disposition  of Trust  Estate.  Except  as
          permitted  by this  Ordinance, the  City shall  not sell,  lease,
          pledge, assign or otherwise  dispose of or encumber  its interest
          in  the  Trust Estate  and  will  promptly  pay or  cause  to  be
          discharged  or make adequate  provision to discharge  any lien or
          charge on any part thereof not permitted hereby.

               Section 7.07.  Financing  Statements.    The  City  and  the
          Trustee shall  cooperate with the Company  in causing appropriate
          financing  statements,  naming  the  Trustee as  pledgee  of  the
          Receipts and Revenues  of the City from the Sale Agreement and of
          the other moneys pledged  under the Ordinance for the  payment of
          the principal of and premium, if any,  and interest on the Bonds,
          and  as pledgee and assignee of  the balance of the Trust Estate,
          and the City shall cooperate with the Trustee and the Company  in
          causing appropriate continuation statements  to be duly filed and
          recorded in the appropriate state and county  offices as required
          by the provisions of the Uniform Commercial Code or other similar
          law  as  adopted  in  the  State  of  New Mexico  and  any  other
          applicable jurisdiction, as  from time to time  amended, in order
          to perfect and  maintain the security  interests created by  this
          Ordinance.

               Section 7.08.  Tax  Covenants; Rebate  Fund.   (a)  The City
          covenants for the benefit of all  Owners from time to time of the
          Bonds that the  City, to the extent within  its control, will not
          take or omit  to take any  action which, would  cause any of  the
          Bonds to be "arbitrage  bonds" within the meaning of  Section 148
          of  the Code or otherwise  subject to federal  income taxation by
          reason of Sections 103 and 141 through 150 of the Code or Section
          103  of  the  1954  Code,  as  applicable,  and   any  applicable
          regulations  promulgated  thereunder.    To  that  end  the  City
          covenants  to  comply with  all covenants  set  forth in  the Tax
          Agreement, which  is hereby  incorporated herein by  reference as
          though fully set forth herein.

               (b)  The  Trustee  shall  establish   and  maintain  a  fund
          separate from any other fund established and maintained hereunder
          designated the "City of  Farmington, New Mexico Pollution Control
          Revenue Bonds,  1997 Series A (Tucson Electric  Power Company San
          Juan  Project) Rebate Fund" (herein called  the "Rebate Fund") in
          accordance  with the provisions of the Tax Agreement.  Within the
          Rebate Fund, the Trustee shall maintain such accounts as shall be
          directed by the Company in order  for the City and the Company to
          comply with the provisions of the  Tax Agreement.  Subject to the
          transfer provisions provided in paragraph (c) below, all money at
          any  time deposited  in  the Rebate  Fund  shall be  held by  the
          Trustee  in trust, to the  extent required to  satisfy the Rebate
          Requirement (as defined in the Tax Agreement), for payment to the
          United  States of America, and  neither the Company,  the City or
          the Owners shall have any rights in or claim to such moneys.  All
          amounts deposited into or on deposit in the  Rebate Fund shall be
          governed  by this  Section  7.08, by  Section  6.04 of  the  Sale
          Agreement  and  by  the  Tax   Agreement.    The  Trustee   shall
          conclusively be  deemed to have complied with  such provisions if
          it follows the directions of the Company, including supplying all
          necessary  information  in  the  manner  set  forth  in  the  Tax
          Agreement,  and  shall  not  be  required  to  take  any  actions
          thereunder in the absence of written directions from the Company.

               (c)  Upon receipt of the Company's written instructions, the
          Trustee shall  remit part or  all of  the balances in  the Rebate
          Fund to  the  United States  of  America,  as so  directed.    In
          addition, if the  Company so directs,  the Trustee shall  deposit
          moneys into  or transfer moneys  out of the  Rebate Fund from  or
          into  such accounts or funds as directed by the Company's written
          directions.  Any funds remaining in  the Rebate Fund after all of
          the Bonds shall have  been paid and any Rebate  Requirement shall
          have   been   satisfied,   or   provision   therefor   reasonably
          satisfactory to  the  Trustee  shall have  been  made,  shall  be
          withdrawn and remitted to the Company.

               (d)  Notwithstanding  any provision  of this  Ordinance, the
          obligation to remit the  Rebate Requirement to the United  States
          of  America and  to comply  with all  other requirements  of this
          Section  7.08, Section  6.04 of  the Sale  Agreement and  the Tax
          Agreement  shall  survive  the  payment  of  the  Bonds  and  the
          satisfaction and discharge of this Ordinance.

               Section 7.09.  Notices of  Trustee.  The  Trustee shall give
          notice to both  the City and the Company  whenever it is required
          hereby to give notice to either and, additionally, shall  furnish
          to  the City  and the  Company copies  of any  Notice by  Mail or
          Publication given by it pursuant to any provision hereof.


                                     ARTICLE VIII

                                      DEFEASANCE


               Section 8.01.  Defeasance.   If the City shall  pay or cause
          to be paid to the Owner  of any Bond secured hereby the principal
          of  and  premium,  if any,  and  interest  due  and payable,  and
          thereafter  to  become due  and payable,  upon  such Bond  or any
          portion  of such Bond  in the principal  amount of  $5,000 or any
          integral  multiple thereof,  such Bond  or portion  thereof shall
          cease  to be entitled to any lien, benefit or security under this
          Ordinance.  If  the City  shall pay or  cause to  be paid to  the
          Owners  of  all the  Bonds secured  hereby  the principal  of and
          premium,  if any, and interest due and payable, and thereafter to
          become due  and payable, thereon,  and shall pay  or cause  to be
          paid  all  other   sums  payable  hereunder  including,   without
          limitation,  amounts payable  pursuant to  Section  10.04 hereof,
          then, and  in that  case, the  right, title  and interest of  the
          Trustee in  and  to  the  Trust  Estate  shall  thereupon  cease,
          terminate  and become  void.   In such  event, the  Trustee shall
          assign, transfer and turn  over to the Company the  Trust Estate,
          including, without limitation, any surplus  in the Bond Fund  and
          any  balance remaining  in  any  other  fund created  under  this
          Ordinance.

               All or any portion of Outstanding Bonds or portions of Bonds
          in principal amounts of $5,000 or any integral  multiple thereof,
          shall  prior to the maturity or redemption date thereof be deemed
          to  have been  paid  within  the  meaning  and  with  the  effect
          expressed in  this Article VIII,  and the entire  indebtedness of
          the City with respect thereof shall be  satisfied and discharged,
          when

                    (a) in  the event said  Bonds or portions  thereof have
               been selected for redemption in accordance with Section 3.02
               hereof,  the Trustee shall have given,  or the Company shall
               have given  to  the  Trustee  in  form  satisfactory  to  it
               irrevocable instructions  to give,  on a date  in accordance
               with  the  provisions  of  Section 3.03  hereof,  notice  of
               redemption of such Bonds or portions thereof,

                    (b) there  shall have  been deposited with  the Trustee
               either moneys  in an  amount which  shall be  sufficient, or
               Government  Obligations which  shall not  contain provisions
               permitting  the  redemption thereof  at  the  option of  the
               issuer, the  principal of  and the interest  on which,  when
               due, and  without regard  to any reinvestment  thereof, will
               provide  moneys which,  together  with the  moneys, if  any,
               deposited with or held by the Trustee,  shall be sufficient,
               to pay  when due the principal  of and premium,  if any, and
               interest due and  to become  due on said  Bonds or  portions
               thereof on and prior to the redemption date or maturity date
               thereof, as the case may be; and

                    (c)  in the event said Bonds or portions thereof do not
               mature and are not to be redeemed within the next succeeding
               sixty (60) days, the Company shall have given the Trustee in
               form satisfactory to it irrevocable instructions to give, as
               soon  as practicable  in  the same  manner  as a  notice  of
               redemption  is  given pursuant  to  Section  3.03 hereof,  a
               notice  to the Owners of said Bonds or portions thereof that
               the  deposit required by clause (b) above has been made with
               the  Trustee and  that  said Bonds  or portions  thereof are
               deemed to  have been  paid in accordance  with this  Article
               VIII and stating  the maturity or redemption date upon which
               moneys  are to be available for the payment of the principal
               of  and premium,  if  any, and  interest  on said  Bonds  or
               portions thereof.

               Neither the Government Obligations nor moneys deposited with
          the  Trustee  pursuant  to this  Article  VIII  nor principal  or
          interest  payments on  any such  Government Obligations  shall be
          withdrawn or used for any purpose other than, and such Government
          Obligations, moneys  and principal or interest  payments shall be
          held in  trust for, the payment of  the principal of and premium,
          if any, and interest on said Bonds or portions thereof; provided,
          that any  cash received from such principal  or interest payments
          on such Government Obligations deposited with the Trustee, if not
          then needed for such purposes,  shall, to the extent practicable,
          be invested in  Government Obligations of  the type described  in
          clause  (b) of the preceding  paragraph maturing at  times and in
          amounts  sufficient to pay when due the principal of and premium,
          if any,  and interest  to become  due on  said Bonds or  portions
          thereof on and  prior to  such redemption date  or maturity  date
          thereof,  as the  case  may be,  and  interest earned  from  such
          reinvestments shall be paid  over to the Company, as  received by
          the  Trustee, free  and  clear  of  any  trust,  lien  or  pledge
          hereunder.    If payment  of less  than all  the  Bonds is  to be
          provided for in  the manner and with the effect  provided in this
          Article  VIII, the Trustee shall select such Bonds or portions of
          Bonds  in  the  manner  specified  by  Section  3.02  hereof  for
          selection  for redemption of less than all Bonds in the principal
          amount designated to the Trustee by  the Company.  At or prior to
          the  time of the deposit  of any Government  Obligations with the
          Trustee pursuant to this Section 8.01, the Company shall  provide
          the  Trustee with a certificate of an accountant or an accounting
          firm  as to the sufficiency of such Government Obligations to pay
          when due the principal  of and premium, if any,  and interest due
          and to  become due as  set forth in  clause (b) of  the preceding
          paragraph.


                                      ARTICLE IX

                                DEFAULTS AND REMEDIES

               Section 9.01.  Events of  Default.   Each  of the  following
          events shall constitute and  is referred to in this  Ordinance as
          an "Event of Default":

                    (a)  a failure to pay  the principal of  or premium, if
               any, on any of the Bonds  when the same shall become due and
               payable at maturity, upon redemption or otherwise;

                    (b)  a failure to pay an installment of interest on any
               of the Bonds after  such interest shall have become  due and
               payable for a period of thirty (30) days;

                    (c)  a failure by the  City to observe  and perform any
               covenant, condition,  agreement or provision (other  than as
               specified  in clauses  (a)  and (b)  of  this Section  9.01)
               contained in the  Bonds or in this Ordinance  on the part of
               the City to  be observed or  performed, which failure  shall
               continue  for a  period  of sixty  (60)  days after  written
               notice, specifying  such failure  and requesting that  it be
               remedied,  shall have been given to the City and the Company
               by the Trustee, which may give such notice in its discretion
               and which shall give  such notice at the written  request of
               Owners of not less than 33% in principal amount of the Bonds
               then  Outstanding, unless  the Trustee,  or the  Trustee and
               Owners  of a  principal amount  of Bonds  not less  than the
               principal amount of Bonds the Owners of which requested that
               such  notice be given,  as the case  may be, shall  agree in
               writing  to  an  extension  of  such  period  prior  to  its
               expiration;  provided,  however, that  the  Trustee, or  the
               Trustee and the Owners of such principal amount of Bonds, as
               the case  may  be, shall  be  deemed to  have agreed  to  an
               extension of  such period if corrective  action is initiated
               by  the City, or the  Company on behalf  of the City, within
               such period and is being diligently pursued.

               Upon the occurrence and continuance of any Event  of Default
          described  in clause (a) or  (b) of the  preceding paragraph, the
          Trustee  may, and at  the written request  of Owners of  not less
          than  33% in principal amount of Bonds then Outstanding shall, by
          written notice to the  City and the Company, declare the Bonds to
          be  immediately due  and payable,  whereupon they  shall, without
          further  action,  become  and  be immediately  due  and  payable,
          anything  in this  Ordinance  or in  the  Bonds to  the  contrary
          notwithstanding,  and the  Trustee shall  give notice  thereof by
          Mail to all Owners of Outstanding Bonds.

               The  provisions of  the  preceding  paragraph, however,  are
          subject  to the  condition that  if, after  the principal  of the
          Bonds shall  have been  so declared to  be due  and payable,  and
          before any judgment or decree  for the payment of the  moneys due
          shall have  been obtained or entered as hereinafter provided, the
          City  shall  cause  to  be  deposited  with  the  Trustee  a  sum
          sufficient to pay all  matured installments of interest  upon all
          Bonds and the  principal of any  and all Bonds  which shall  have
          become due  otherwise than  by reason of  such declaration  (with
          interest upon such  principal and, to  the extent permissible  by
          law, on overdue installments  of interest, at the rate  per annum
          borne by the  Bonds) and such amounts  as shall be sufficient  to
          cover  reasonable  compensation  and  reimbursement  of  expenses
          payable  to the  Trustee  and any  predecessor  Trustee, and  all
          Events  of  Default  hereunder   other  than  nonpayment  of  the
          principal  of  Bonds  which   shall  have  become  due   by  said
          declaration  shall have been remedied, then,  in every such case,
          such Event of Default shall be deemed waived and such declaration
          and  its consequences  rescinded  and annulled,  and the  Trustee
          shall promptly give written notice of such waiver, rescission and
          annulment to  the City  and the  Company, and,  if notice  of the
          acceleration of the Bonds shall have been  given to the Owners of
          the Bonds,  shall give notice  thereof by Mail  to all  Owners of
          Outstanding Bonds;  but no such waiver,  rescission and annulment
          shall  extend to  or affect  any subsequent  Event of  Default or
          impair any right or remedy consequent thereon.

               Section 9.02.  Remedies.      Upon   the    occurrence   and
          continuance of any Event of Default, then and in every  such case
          the Trustee in its  discretion may, and upon the  written request
          of Owners of not less than a majority in principal  amount of the
          Bonds  then   Outstanding  and   receipt  of  indemnity   to  its
          satisfaction shall, in  its own  name and  as the  Trustee of  an
          express trust:

                    (a) by mandamus, or other suit, action or proceeding at
               law or in equity,  enforce all rights of  the Owners of  the
               Bonds, and require the City or  the Company to carry out any
               agreements with or  for the  benefit of such  Owners and  to
               perform  its  or  their  duties  under  the  Act,  the  Sale
               Agreement and this Ordinance;

                    (b) bring suit upon the Bonds; or

                    (c)  by action  or suit  in equity  enjoin any  acts or
               things which may be  unlawful or in violation of  the rights
               of the Owners of the Bonds.

               Section 9.03.  Restoration to Former Position.  In the event
          that any proceeding  taken by  the Trustee to  enforce any  right
          under this  Ordinance shall  have been discontinued  or abandoned
          for  any reason, or shall  have been determined  adversely to the
          Trustee,  then  the City,  the Trustee  and  the Owners  shall be
          restored,  subject to  any determination  in such  proceeding, to
          their former  positions and  rights hereunder,  respectively, and
          all  rights, remedies and powers of the Trustee shall continue as
          though no such proceeding had been taken.

               Section 9.04.  Owners'   Right    to   Direct   Proceedings.
          Anything in  this Ordinance to the  contrary notwithstanding, the
          Owners  of a  majority  in principal  amount  of the  Bonds  then
          Outstanding  hereunder shall have the right,  by an instrument in
          writing  executed and  delivered to  the  Trustee, to  direct the
          time,  method and  place of  conducting all  remedial proceedings
          available to the  Trustee under this Ordinance  or exercising any
          trust  or  power  conferred  on the  Trustee  by  this Ordinance;
          provided,  however, that  such direction  shall not  be otherwise
          than  in accordance with law and the provisions of this Ordinance
          and   that  the  Trustee  shall  have  the  right  (but  not  the
          obligation)  to  decline  to follow  any  such  direction if  the
          Trustee,  being  advised by  counsel,  shall  determine that  the
          action or proceeding so directed may not lawfully be taken, or if
          the  Trustee in  good faith  shall determine  that the  action or
          proceedings  so directed  would involve  the Trustee  in personal
          liability or if the Trustee in good faith shall so determine that
          the actions  or forbearances  specified  in or  pursuant to  such
          direction would  be unduly prejudicial to the interests of Owners
          not  joining in the giving of said direction, it being understood
          that the Trustee shall have  no duty to ascertain whether  or not
          such  actions  or forbearances  are  unduly  prejudicial to  such
          Owners.

               Section 9.05.  Limitation  on  Owners'  Right  to  Institute
          Proceedings.  No Owner of Bonds shall have any right to institute
          any  suit, action  or proceeding  in  equity or  at  law for  the
          execution  of any trust or  power hereunder, or  any other remedy
          hereunder or  on said Bonds,  unless such Owner  previously shall
          have  given to the Trustee written  notice of an Event of Default
          as hereinabove provided and unless the Owners of not less than  a
          majority  in principal amount of the Bonds then Outstanding shall
          have made  written request  of the  Trustee so  to do, after  the
          right to  institute said  suit, action  or proceeding  shall have
          accrued,  and  shall  have  afforded  the  Trustee  a  reasonable
          opportunity to proceed  to institute  the same in  either its  or
          their  name, and unless there also shall have been offered to the
          Trustee  security and  indemnity satisfactory  to it  against the
          costs,  expenses  and  liabilities  to  be  incurred  therein  or
          thereby, and  the  Trustee  shall  not have  complied  with  such
          request within a reasonable  time; and such notification, request
          and offer of indemnity are hereby declared in every such case, at
          the  option of  the Trustee,  to be  conditions precedent  to the
          institution  of  said  suit,   action  or  proceeding;  it  being
          understood and intended that no one or more of the  Owners of the
          Bonds shall have any right in any manner whatever by his or their
          action  to affect,  disturb  or prejudice  the  security of  this
          Ordinance,  or to enforce any right hereunder or under the Bonds,
          except in the manner herein provided, and that all suits, actions
          and proceedings at law or in  equity shall be instituted, had and
          maintained in  the  manner  herein provided  and  for  the  equal
          benefit of all Owners of the Bonds.

               Section 9.06.  No  Impairment of  Right to  Enforce Payment.
          Notwithstanding any other provision  in this Ordinance, the right
          of any Owner of a Bond to receive payment of the principal of and
          premium, if  any,  and interest  on such  Bond, on  or after  the
          respective due dates expressed therein, or to institute  suit for
          the enforcement of any  such payment on or after  such respective
          dates, shall not be  impaired or affected without the  consent of
          such Owner.

               Section 9.07.  Proceedings by Trustee without  Possession of
          Bonds.  All rights of action under this Ordinance or under any of
          the Bonds secured hereby which are enforceable by the Trustee may
          be enforced by it without the possession of any of  the Bonds, or
          the production thereof on the trial or other proceedings relative
          thereto,  and any such  suit, action or  proceeding instituted by
          the  Trustee shall  be  brought in  its  name for  the  equal and
          ratable  benefit of  the  Owners of  the  Bonds, subject  to  the
          provisions of this Ordinance.

               Section 9.08.  No  Remedy  Exclusive.     No  remedy  herein
          conferred upon or reserved to the Trustee or to the Owners of the
          Bonds  is intended  to  be  exclusive  of  any  other  remedy  or
          remedies, and each and every such remedy shall be cumulative, and
          shall be in  addition to  every other remedy  given hereunder  or
          under the Sale Agreement, now or hereafter existing  at law or in
          equity or by statute.

               Section 9.09.  No Waiver of Remedies.   No delay or omission
          of the Trustee or of any Owner of a Bond to exercise any right or
          power  accruing upon any default  shall impair any  such right or
          power  or shall be construed to be  a waiver of any such default,
          or an acquiescence therein;  and every power and remedy  given by
          this Article  IX to the Trustee  and to the Owners  of the Bonds,
          respectively, may be exercised  from time to time and as often as
          may be deemed expedient.

               Section 9.10.  Application of Moneys.   Any moneys  received
          by  the Trustee,  by  any receiver  or  by any  Owner  of a  Bond
          pursuant  to any right given or action taken under the provisions
          of this  Article IX, after payment  of the costs and  expenses of
          the proceedings resulting in the collection of such moneys and of
          all  amounts due to the Trustee and any predecessor Trustee under
          Section 10.04 hereof, shall be deposited in the Bond Fund and all
          moneys so deposited in the Bond Fund during the continuance of an
          Event  of Default  (other than  moneys for  the payment  of Bonds
          which had matured or otherwise become payable prior to such Event
          of Default or for the payment of interest due prior to such Event
          of Default) shall be applied as follows:

                    (a) Unless  the principal of  all the Bonds  shall have
               become due and payable, all such moneys shall be applied (i)
               first, to the payment to the persons entitled thereto of all
               installments  of  interest  then  due  on  the  Bonds,  with
               interest on overdue installments, if lawful, at the rate per
               annum borne  by the Bonds, in  the order of  maturity of the
               installments of  such interest and, if  the amount available
               shall  not  be sufficient  to  pay  in full  any  particular
               installment  of  interest,  then  to  the  payment  ratably,
               according  to the amounts due on  such installment, and (ii)
               second,  to the payment  to the persons  entitled thereto of
               the  unpaid principal of any  of the Bonds  which shall have
               become due (other  than Bonds called for  redemption for the
               payment of which money is held pursuant to the provisions of
               this Ordinance),  with interest on such Bonds  at their rate
               from the respective dates upon which they became due and, if
               the  amount available shall not be sufficient to pay in full
               Bonds  due  on  any  particular  date,  together  with  such
               interest,  then to  the  payment ratably,  according to  the
               amount of principal and  interest due on such date,  in each
               case  to   the   persons  entitled   thereto,  without   any
               discrimination or privilege.

                    (b) If the principal of all the Bonds shall have become
               due and payable,  all such  moneys shall be  applied to  the
               payment of  the principal and  interest then due  and unpaid
               upon  the  Bonds,  with  interest on  overdue  interest  and
               principal,  as aforesaid, without  preference or priority of
               principal over interest or of interest over principal, or of
               any installment  of interest  over any other  installment of
               interest,  or of  any  Bond over  any  other Bond,  ratably,
               according to the amounts  due respectively for principal and
               interest,  to  the  persons  entitled  thereto  without  any
               discrimination or privilege.

                    (c) If the principal of all the Bonds shall have become
               due  and payable, and if acceleration of the maturity of the
               Bonds  by reason of  such Event of  Default shall thereafter
               have  been rescinded  and annulled  under the  provisions of
               this Article IX,  then, subject to the  provisions of clause
               (b)  of this Section 9.10  which shall be  applicable in the
               event that the principal of all the Bonds shall later become
               due and payable, the  moneys shall be applied in  accordance
               with the provisions of clause (a) of this Section 9.10.

               Section 9.11.  Severability  of Remedies.  It is the purpose
          and intention of this  Article IX to provide rights  and remedies
          to the Trustee and the Owners which may be lawfully granted under
          the provisions  of the Act, but should any right or remedy herein
          granted be held to  be unlawful, the Trustee and the Owners shall
          be entitled, as above set forth,  to every other right and remedy
          provided in this Ordinance and by law.

               Section 9.12.  No  Obligation of  City to  Act.   Subject to
          Sections 7.04 and 7.05, the City shall have no obligation to take
          any action  or pursue any right  or remedy of the  Trustee or any
          Owner  under  this Ordinance  or  otherwise,  including, but  not
          limited to, taking any action in a bankruptcy proceeding.


                                      ARTICLE X

                TRUSTEE; PAYING AGENT AND CO-PAYING AGENTS; REGISTRAR

               Section 10.01. Acceptance  of  Trusts.    By  executing  the
          Acceptance  of the Duties of  the Trustee and  the certificate of
          authentication with  respect to  each of  the Bonds,  the Trustee
          shall signify its acceptance and agreement to  execute the trusts
          hereby created, but only  upon the additional terms set  forth in
          this  Article X,  to  all  of  which  the  City  agrees  and  the
          respective Owners agree by their acceptance of delivery of any of
          the Bonds.

               Section 10.02. No   Responsibility   for   Recitals.     The
          recitals,   statements  and  representations  contained  in  this
          Ordinance or in the Bonds, save only the Trustee's authentication
          upon the Bonds, are not made by the Trustee, and the Trustee does
          not assume, and shall not have, any responsibility or  obligation
          for  the  correctness  of any  thereof.    The  Trustee makes  no
          representation  as  to  the   validity  or  sufficiency  of  this
          Ordinance or the Bonds.

               Section 10.03. Limitations  on Liability.   The  Trustee may
          execute any of the trusts or powers hereof and perform the duties
          required  of  it  hereunder  by  or  through  attorneys,  agents,
          receivers, or  employees,  and shall  be  entitled to  advice  of
          counsel concerning  all matters of trust and  its duty hereunder,
          and  the Trustee  shall  not be  answerable  for the  default  or
          misconduct  of any  such attorney,  agent, receiver,  or employee
          selected by  it with reasonable  care.  The Trustee  shall not be
          answerable for the exercise of any discretion or power under this
          Ordinance or for anything whatsoever in connection with the trust
          created hereby, except only for its own negligence or bad faith.

               Anything in  this Ordinance to the contrary notwithstanding,
          the  Trustee shall in no event be  required to expend or risk its
          own funds  or otherwise incur personal financial liability in the
          performance of any of its duties or in the exercise of any of its
          rights  or  powers,  if there  shall  be  reasonable grounds  for
          believing that the repayment of such funds or  adequate indemnity
          against such liability is not reasonably assured to it.

               Section 10.04. Compensation,  Expenses  and  Advances.   The
          Trustee,  the  Paying  Agent  and any  Co-Paying  Agent,  and the
          Registrar under  this Ordinance  shall be entitled  to reasonable
          compensation for  their services rendered hereunder  (not limited
          by any provision of law regarding the compensation of the trustee
          of  an  express  trust) and  to  reimbursement  for their  actual
          out-of-pocket  expenses  (including   counsel  fees)   reasonably
          incurred  in connection  therewith except  as  a result  of their
          negligence   or   bad  faith,   including,   without  limitation,
          compensation for any services rendered, and reimbursement for any
          expenses  incurred, at and subsequent  to the time  the Bonds are
          deemed  to have been paid in accordance with Article VIII hereof.
          If  the  City  shall fail  to  perform  any of  the  covenants or
          agreements contained in this  Ordinance, other than the covenants
          or agreements in respect of  the payment of the principal of  and
          premium, if  any, and interest on the  Bonds, the Trustee may, in
          its uncontrolled discretion  and without notice to the  Owners of
          the Bonds,  at any time and  from time to time,  make advances to
          effect performance  of the same  on behalf  of the City,  but the
          Trustee shall  be under no obligation  so to do; and  any and all
          such advances may bear interest at a rate per annum not exceeding
          the base rate then in  effect for 90-day commercial loans  by the
          Trustee  or  a  commercial   banking  affiliate  of  the  Trustee
          designated as such by the Trustee in the city in which is located
          the  Principal Office of the  Trustee (or such  affiliate, as the
          case may be) to borrowers of the highest credit standing;  but no
          such advance shall operate  to relieve the City from  any default
          hereunder.   In Section 5.04  of the Sale  Agreement, the Company
          has  agreed  that  it will  pay  to  the  Trustee (including  any
          predecessor Trustee),  the Paying  Agent and any  Co-Paying Agent
          and   the  Registrar,  such  compensation  and  reimbursement  of
          expenses and  advances, but the  Company may, without  creating a
          default hereunder,  contest in  good faith the  reasonableness of
          any such services, expenses  and advances.  If the  Company shall
          have failed to make any payment to the Trustee or any predecessor
          Trustee under Section 5.04 of the Sale Agreement and such failure
          shall  have  resulted  in an  Event  of  Default  under the  Sale
          Agreement, the Trustee, and  any predecessor Trustee, shall have,
          in addition to  any other rights hereunder, a claim, prior to the
          claim of the Owners, for the  payment of its compensation and the
          reimbursement of its  expenses and  any advances made  by it,  as
          provided in this Section  10.04, upon the moneys  and obligations
          in the Bond Fund; provided, however, that neither the Trustee nor
          any  predecessor Trustee shall have any such claim upon moneys or
          obligations  deposited  with or  paid  to  the  Trustee  for  the
          redemption or payment of Bonds which are deemed to have been paid
          in accordance with Article VIII hereof.

               In  Section 5.05  of  the Sale  Agreement,  the Company  has
          agreed to  indemnify the Trustee  and any predecessor  Trustee to
          the extent provided therein.

               Section 10.05. Notice  of  Events of  Default.   The Trustee
          shall not  be  required to  take  notice, or  be  deemed to  have
          notice, of any default  or Event of Default under  this Ordinance
          other  than an Event  of Default under  clause (a) or  (b) of the
          first  paragraph  of  Section  9.01  hereof,  unless  an  officer
          assigned  by  the  Trustee  to  administer  its  corporate  trust
          business  has  been  specifically  notified in  writing  of  such
          default  or  Event  of Default  by  Owners  of  at least  33%  in
          principal amount of the Bonds then Outstanding.  The Trustee may,
          however, at any time, in its  discretion, require of the City and
          the  Company full information and advice as to the performance of
          any of the covenants, conditions and agreements contained herein.

               Section 10.06. Action  by  Trustee.   The  Trustee shall  be
          under no obligation to  take any action in respect of any default
          or  Event  of  Default  hereunder  or  toward  the  execution  or
          enforcement of any of the trusts hereby created, or to institute,
          appear  in or defend any  suit or other  proceeding in connection
          therewith,  unless requested in writing  so to do  by Owners of a
          majority in principal  amount of the Bonds then Outstanding, and,
          if in its  opinion such action may tend to  involve it in expense
          or liability, unless furnished, from time to  time as often as it
          may require, with security and indemnity satisfactory to it.  The
          foregoing provisions  are intended only for the protection of the
          Trustee,  and shall not affect  any discretion or  power given by
          any provisions of this Ordinance to the Trustee to take action in
          respect of any default or Event of Default without such notice or
          request from the Owners of the Bonds, or without such security or
          indemnity.

               Section 10.07. Good Faith  Reliance.  The  Trustee shall  be
          protected and shall incur no liability in acting or proceeding in
          good  faith  upon   any  resolution,  notice,   telegram,  telex,
          facsimile  transmission,  request, consent,  waiver, certificate,
          statement, affidavit, voucher, bond,  requisition or other  paper
          or document which it  shall in good faith  believe to be  genuine
          and to  have been passed or  signed by the proper  board, body or
          person or to have been prepared and furnished  pursuant to any of
          the provisions of this  Ordinance or the Sale Agreement,  or upon
          the  written opinion  of  any attorney,  engineer, accountant  or
          other  expert believed by the Trustee to be qualified in relation
          to the subject matter, and the  Trustee shall be under no duty to
          make any investigation or inquiry  as to any statements contained
          or matters referred to in any such instrument, but may accept and
          rely  upon the  same  as conclusive  evidence  of the  truth  and
          accuracy of  such statements.   Neither the  Trustee, the  Paying
          Agent,  any Co-Paying Agent nor  the Registrar shall  be bound to
          recognize any person as an Owner of a Bond or to take  any action
          at  his request unless  the ownership of  such Bond  is proved as
          contemplated in Section 11.01 hereof.

               Section 10.08. Dealings in  Bonds and with the  City and the
          Company.  The Trustee,  the Paying Agent, any Co-Paying  Agent or
          the  Registrar, in its individual  or any other  capacity, may in
          good faith  buy, sell, own,  hold and  deal in any  of the  Bonds
          issued hereunder, and may join in any action which any Owner of a
          Bond  may be entitled to  take with like effect  as if it did not
          act  in any capacity hereunder.   The Trustee,  the Paying Agent,
          any  Co-Paying Agent or the  Registrar, in its  individual or any
          other  capacity, either as principal or agent, may also engage in
          or be interested in  any financial or other transaction  with the
          City or the Company, and may act as depositary, trustee, or agent
          for any committee  or body of Owners  of Bonds secured  hereby or
          other obligations of the  City as freely as if it did  not act in
          any capacity hereunder.

               Section 10.09. Allowance of Interest.   The Trustee may, but
          shall not be  obligated to,  allow and credit  interest upon  any
          moneys which  it  may  at  any  time receive  under  any  of  the
          provisions  of  this  Ordinance, at  such  rate,  if  any, as  it
          customarily allows upon similar  funds of similar size  and under
          similar  conditions.   All  interest allowed  on any  such moneys
          shall  be  credited as  provided in  Article  IV with  respect to
          interest on investments.

               Section 10.10. Construction of Ordinance.   The Trustee  may
          construe any of the  provisions of this Ordinance insofar  as the
          same  may appear to be  ambiguous or inconsistent  with any other
          provision  hereof, and  any construction  of any  such provisions
          hereof  by the Trustee  in good faith  shall be  binding upon the
          Owners of the Bonds.

               Section 10.11. Resignation  of  Trustee.   The  Trustee  may
          resign  and be discharged of the trusts created by this Ordinance
          by executing an  instrument in writing  resigning such trust  and
          specifying the  date when such resignation shall take effect, and
          filing the  same with the  City Clerk  of the City  and with  the
          Company,  not  less than  forty-five  (45) days  before  the date
          specified  in such  instrument when  such resignation  shall take
          effect, and by  giving notice of such resignation by  Mail to all
          Owners of Bonds.  Such resignation shall take effect on the later
          to occur of (i) the day specified in such instrument  and notice,
          unless previously  a successor Trustee shall  have been appointed
          as hereinafter  provided, in  which event such  resignation shall
          take effect  immediately upon  the appointment of  such successor
          Trustee and (ii) the appointment of a successor Trustee.

               So long  as no event which  is, or after notice  or lapse of
          time,  or  both, would  become, an  Event  of Default  shall have
          occurred and be continuing,  if the City shall have  delivered to
          the  Trustee (i)  an instrument  appointing a  successor Trustee,
          effective as of a  date specified therein and (ii)  an instrument
          of  acceptance of such appointment, effective as of such date, by
          such  successor Trustee  in  accordance with  Section 10.16,  the
          Trustee  shall be deemed to have resigned as contemplated in this
          Section,  the  successor Trustee  shall  be deemed  to  have been
          appointed pursuant  to subsection (b)  of Section 10.13  and such
          appointment shall be deemed to have been accepted as contemplated
          in Section 10.16,  all as of such date,  and all other provisions
          of  this  Article X  shall  be  applicable to  such  resignation,
          appointment and acceptance except to the extent inconsistent with
          this  paragraph.  The City  shall deliver any  such instrument of
          appointment at the direction of the Company.

               Section 10.12. Removal  of  Trustee.    The Trustee  may  be
          removed at any  time by filing with  the Trustee so  removed, and
          with  the City and the  Company, an instrument  or instruments in
          writing, appointing a successor,  or an instrument or instruments
          in writing, consenting  to the  appointment by the  City (at  the
          direction  of the Company) of  a successor and  accompanied by an
          instrument  of appointment by the  City (at the  direction of the
          Company) of such successor,  and in any event executed  by Owners
          of not less than a majority in principal amount of the Bonds then
          Outstanding, such filing to be made by any Owner of a Bond or his
          duly authorized attorney.

               Section 10.13. Appointment  of  Successor Trustee.    (a) In
          case at any  time the Trustee shall be removed,  or be dissolved,
          or if its property or affairs shall be taken under the control of
          any state  or federal  court  or administrative  body because  of
          insolvency or bankruptcy, or for any other reason, then a vacancy
          shall  forthwith  and ipso  facto exist  and  a successor  may be
          appointed, and in case at any time the Trustee shall resign or be
          deemed  to have resigned, then  a successor may  be appointed, by
          filing with the  City and  the Company an  instrument in  writing
          appointing such successor  Trustee executed by Owners of not less
          than a  majority in principal  amount of Bonds  then Outstanding.
          Copies of such instrument shall be promptly delivered by the City
          to  the predecessor Trustee to  the Trustee so  appointed and the
          Company.

               (b)  Until a  successor Trustee  shall be  appointed by  the
          Owners  of  the  Bonds as  herein  authorized,  the  City, by  an
          instrument authorized  by resolution,  shall appoint  a successor
          Trustee as directed by the Company.  After any appointment by the
          City, it shall  cause notice of  such appointment to be  given by
          Mail to all Owners of Bonds.  Any new Trustee so appointed by the
          City shall immediately and without further act be superseded by a
          Trustee appointed by the Owners of  the Bonds in the manner above
          provided.

               (c)    No  resignation or  removal  of  the  Trustee and  no
          appointment of a successor Trustee pursuant to this Article shall
          become  effective  until the  acceptance  of  appointment by  the
          successor Trustee.

               Section 10.14. Qualifications of Successor  Trustee.   Every
          successor  Trustee  (a) shall  be a  bank  or trust  company duly
          organized under  the laws  of the United  States or any  state or
          territory thereof authorized  by law  to perform  all the  duties
          imposed upon it  by this  Ordinance and  (b) shall  have (or  the
          parent  holding company of  which shall have)  a combined capital
          stock, surplus and  undivided profits of at least $100,000,000 if
          there can be located, with reasonable effort, such an institution
          willing  and able to accept the trust on reasonable and customary
          terms.

               Section 10.15. Judicial  Appointment  of Successor  Trustee.
          In case at any  time the Trustee shall resign  and no appointment
          of  a successor Trustee shall  be made pursuant  to the foregoing
          provisions of this  Article X prior to the date  specified in the
          notice of resignation  as the  date when such  resignation is  to
          take  effect, the retiring Trustee may forthwith apply to a court
          of  competent jurisdiction  for  the appointment  of a  successor
          Trustee.   If no appointment of a successor Trustee shall be made
          pursuant to the foregoing provisions of this Article X within six
          months  after  a vacancy  shall have  occurred  in the  office of
          Trustee, any Owner of a Bond may apply to any  court of competent
          jurisdiction  to appoint  a  successor Trustee.   Such  court may
          thereupon, after such notice,  if any, as it may  deem proper and
          prescribe, appoint a successor Trustee.

               Section 10.16. Acceptance  of  Trusts by  Successor Trustee.
          Any   successor  Trustee   appointed  hereunder   shall  execute,
          acknowledge and deliver to the  City an instrument accepting such
          appointment  hereunder, and  thereupon  such  successor  Trustee,
          without any  further act, deed  or conveyance, shall  become duly
          vested with  all the  estates, property, rights,  powers, trusts,
          duties and obligations of its predecessor in the trust hereunder,
          with like effect  as if  originally named Trustee  herein.   Upon
          request  of such Trustee,  such predecessor Trustee  and the City
          shall  execute and  deliver  an instrument  transferring to  such
          successor Trustee  all the estates, property,  rights, powers and
          trusts hereunder of such predecessor  Trustee and, subject to the
          provisions  of  Section  10.04 hereof,  such  predecessor Trustee
          shall  pay over  to the  successor Trustee  all moneys  and other
          assets at the time held by it hereunder.

               Section 10.17. Successor  by Merger  or Consolidation.   Any
          corporation or  association into which any  Trustee hereunder may
          be merged or converted or with  which it may be consolidated,  or
          any  corporation  or association  resulting  from  any merger  or
          consolidation  to which any Trustee hereunder shall be a party or
          any corporation or association  succeeding to the corporate trust
          business of  the Trustee, shall  be the  successor Trustee  under
          this Ordinance, without the  execution or filing of any  paper or
          any further act on  the part of the  parties hereto, anything  in
          this Ordinance to the contrary notwithstanding.

               If,  at the  time any  such successor  to the  Trustee shall
          succeed to the trusts created by this Ordinance, any of the Bonds
          shall have  been authenticated but not  delivered, such successor
          Trustee  may  adopt  the  certificate of  authentication  of  any
          predecessor Trustee and deliver  such Bonds so authenticated; and
          if  at  that  time,  any  of  the  Bonds  shall   not  have  been
          authenticated, such successor Trustee may authenticate such Bonds
          either in  the name of any  such predecessor hereunder  or in the
          name  of such successor; and, in all such cases, such certificate
          of  authentication shall have the full force which it is anywhere
          in the Bonds or  in this Ordinance provided that  the certificate
          of authentication  of the Trustee shall  have; provided, however,
          that  the right to adopt the certificate of authentication of any
          predecessor Trustee or to  authenticate Bonds in the name  of any
          predecessor  Trustee  shall  apply   only  to  its  successor  or
          successors by merger, conversion or consolidation.

               Section 10.18. Standard of Care.  Notwithstanding  any other
          provisions  of  this Article  X,  the Trustee  shall,  during the
          existence of an Event  of Default of which the Trustee has actual
          notice, exercise  such of the rights  and powers vested in  it by
          this Ordinance and use the same degree of skill and care in their
          exercise  as a  prudent  man would  use  and exercise  under  the
          circumstances in the conduct of his own affairs.

               Section 10.19. Notice   to  Owners  of  Bonds  of  Event  of
          Default.  If an Event  of Default occurs of which the  Trustee by
          Section 10.05 hereof  is required  to take notice  and deemed  to
          have notice,  or any other Event  of Default occurs  of which the
          Trustee has been specifically notified in accordance with Section
          10.05 hereof, and any such Event of Default shall continue for at
          least two days after the Trustee acquires actual  notice thereof,
          unless the  Trustee  shall have  theretofore  given a  notice  of
          acceleration pursuant  to Section 9.01 hereof,  the Trustee shall
          give Notice by Mail to all Owners of Outstanding Bonds.

               Section 10.20. Intervention in  Litigation of the City.   In
          any judicial proceeding to which the City is a party and which in
          the  opinion of  the Trustee  and its  counsel has  a substantial
          bearing on  the interests of the Owners of Bonds, the Trustee may
          intervene on behalf of  the Owners of the  Bonds and shall,  upon
          receipt  of indemnity satisfactory to  it, do so  if requested in
          writing by Owners of a majority in principal  amount of the Bonds
          then Outstanding if permitted by the court having jurisdiction in
          the premises.

               Section 10.21. Paying  Agent; Co-Paying  Agents.   The  City
          shall, with the approval of the Company, appoint the Paying Agent
          for the Bonds and may at any time or from time to time,  with the
          approval of the Company, appoint one or more Co-Paying Agents for
          the Bonds, subject to  the conditions set forth in  Section 10.22
          hereof.    The  Paying  Agent  and  each  Co-Paying  Agent  shall
          designate to  the Trustee  its Principal  Office and  signify its
          acceptance  of  the  duties   and  obligations  imposed  upon  it
          hereunder by a written instrument of acceptance delivered to  the
          City  and the  Trustee in  which such  Paying Agent  or Co-Paying
          Agent will agree, particularly:

                    (a) to hold all sums held  by it for the payment of the
               principal  of and premium, if  any, or interest  on Bonds in
               trust for the benefit of the Owners of the Bonds until  such
               sums shall be paid  to such Owners or otherwise  disposed of
               as herein provided;

                    (b)  to  keep  such  books  and  records  as  shall  be
               consistent  with  prudent industry  practice,  to make  such
               books and records available for inspection  by the City, the
               Trustee  and the Company at all reasonable times and, in the
               case of  a Co-Paying  Agent, to promptly  furnish copies  of
               such books and records to the Paying Agent; and

                    (c)  in the case of a Co-Paying Agent, upon the request
               of the  Paying Agent,  to  forthwith deliver  to the  Paying
               Agent all sums so held in trust by such Co-Paying Agent.

               The City shall cooperate with the Trustee and the Company to
          cause  the necessary arrangements to be made and to be thereafter
          continued  whereby funds  derived from  the sources  specified in
          Sections  4.03  and 4.04  hereof will  be  made available  to the
          Paying Agent and each Co-Paying Agent for the payment when due of
          the principal of, premium, if any, and interest on the Bonds.

               Section 10.22. Qualifications of Paying Agent  and Co-Paying
          Agents; Resignation; Removal.  The Paying Agent and any Co-Paying
          Agent shall be a corporation  or association duly organized under
          the  laws  of the  United  States  of  America  or any  state  or
          territory thereof,  having a combined capital  stock, surplus and
          undivided profits of  at least $15,000,000 and authorized  by law
          to perform all the duties imposed upon it by this Ordinance.  The
          Paying Agent and any Co-Paying Agent  may at any time resign  and
          be discharged  of  the duties  and  obligations created  by  this
          Ordinance by giving at least sixty (60) days' notice to the City,
          the Company and the Trustee.  The Paying Agent  and any Co-Paying
          Agent  may  be  removed at  any  time, at  the  direction  of the
          Company, by an  instrument, signed  by the City,  filed with  the
          Paying Agent or  such Co-Paying  Agent, as the  case may be,  and
          with the Trustee.

               In the event  of the  resignation or removal  of the  Paying
          Agent  or any Co-Paying Agent, the Paying Agent or such Co-Paying
          Agent, as the case may be, shall pay over, assign and deliver any
          moneys held by it in such  capacity to its successor or, if there
          be no successor, to the Trustee.

               In the event that  the City shall  fail to appoint a  Paying
          Agent  hereunder, or  in the  event that  the Paying  Agent shall
          resign or  be removed,  or be  dissolved, or  if the property  or
          affairs of the  Paying Agent shall be taken under  the control of
          any state  or  federal court  or administrative  body because  of
          bankruptcy or insolvency, or  for any other reason, and  the City
          shall  not have  appointed  its successor  as  Paying Agent,  the
          Trustee shall ipso facto be deemed to be the Paying Agent for all
          purposes of this Ordinance  until the appointment by the  City of
          the Paying Agent or successor Paying Agent, as the case may be.

               Upon  the  appointment  of  a successor  Paying  Agent,  the
          Trustee shall give notice thereof by Mail to all Owners of Bonds.

               Section 10.23. Registrar.  The City shall, with the approval
          of the Company, appoint  the Registrar for the Bonds,  subject to
          the  conditions set forth in Section 10.24 hereof.  The Registrar
          shall designate to the  Trustee its Principal Office  and signify
          its  acceptance  of the  duties imposed  upon  it hereunder  by a
          written  instrument of acceptance  delivered to the  City and the
          Trustee in which such Registrar will agree, particularly, to keep
          such  books  and records  as  shall  be consistent  with  prudent
          industry  practice and to  make such books  and records available
          for inspection  by the City, the  Trustee and the  Company at all
          reasonable times.

               The City shall cooperate with the Trustee and the Company to
          cause  the necessary arrangements to be made and to be thereafter
          continued whereby  Bonds, executed by the  City and authenticated
          by   the  Trustee,   shall  be   made  available   for  exchange,
          registration and registration of transfer at the Principal Office
          of the Registrar.  The City shall cooperate with the Trustee, the
          Registrar and the Company to cause the necessary arrangements  to
          be made and thereafter continued whereby the Paying Agent and any
          Co-Paying  Agent  shall  be  furnished  such  records  and  other
          information,  at such times, as  shall be required  to enable the
          Paying Agent and such  Co-Paying Agent to perform the  duties and
          obligations imposed upon them hereunder.

               Section 10.24. Qualifications  of   Registrar;  Resignation;
          Removal.   The Registrar  shall be  a corporation  or association
          duly organized under the laws of the  United States of America or
          any state  or territory thereof, having a combined capital stock,
          surplus  and  undivided  profits  of  at  least  $15,000,000  and
          authorized by  law to perform all  the duties imposed  upon it by
          this Ordinance.   The  Registrar may  at any  time resign and  be
          discharged  of  the  duties   and  obligations  created  by  this
          Ordinance by giving at least sixty (60) days' notice to the City,
          the Trustee and the Company.  The Registrar may be removed at any
          time, at the direction of the Company, by an instrument signed by
          the City filed with the Registrar and the Trustee.

               In the event of the resignation or removal of the Registrar,
          the Registrar shall deliver any Bonds held by it in such capacity
          to its successor or, if there be no successor, to the Trustee.

               In the event that the City shall fail to appoint a Registrar
          hereunder, or in the event that  the Registrar shall resign or be
          removed,  or be dissolved,  or if the property  or affairs of the
          Registrar  shall be  taken  under the  control  of any  state  or
          federal  court or  administrative body  because of  bankruptcy or
          insolvency, or for  any other reason, and the City shall not have
          appointed  its successor  as  Registrar, the  Trustee shall  ipso
          facto be deemed  to be  the Registrar  for all  purposes of  this
          Ordinance until the appointment  by the City of the  Registrar or
          successor Registrar, as the case may be.

               Upon the  appointment of a successor  Registrar, the Trustee
          shall give notice thereof by Mail to all Owners of Bonds.

               Section 10.25. Several  Capacities.  Anything  herein to the
          contrary notwithstanding, the same  entity may serve hereunder as
          the  Trustee, the  Paying  Agent or  a  Co-Paying Agent  and  the
          Registrar and in any combination of such capacities to the extent
          permitted by law.


                                      ARTICLE XI

                   EXECUTION OF INSTRUMENTS BY OWNERS OF BONDS AND
                             PROOF OF OWNERSHIP OF BONDS

               Section 11.01. Execution of Instruments; Proof of Ownership.
          Any request,  direction, consent or other  instrument in writing,
          whether  or not  required or  permitted by  this Ordinance  to be
          signed or executed by Owners  of the Bonds, may be in  any number
          of concurrent instruments of  similar tenor and may be  signed or
          executed by  Owners of the Bonds  or by an agent  appointed by an
          instrument  in writing.    Proof of  the  execution of  any  such
          instrument  and of the ownership of Bonds shall be sufficient for
          any purpose of this Ordinance and shall be conclusive in favor of
          the  Trustee with  regard to any  action taken  by it  under such
          instrument if made in the following manner:

                    (a) The fact and date of the execution by any person of
               any  such instrument may be proved by the certificate of any
               officer in  any jurisdiction who,  by the laws  thereof, has
               power to take  acknowledgments within such jurisdiction,  to
               the  effect   that  the   person  signing  such   instrument
               acknowledged  before him  the  execution thereof,  or by  an
               affidavit of a witness to such execution.

                    (b) The ownership or former ownership of Bonds shall be
               proved by  the registration books kept  under the provisions
               of Section 2.08 hereof.

               Nothing contained in  this Article XI shall  be construed as
          limiting  the Trustee to such  proof, it being  intended that the
          Trustee may  accept any other  evidence of matters  herein stated
          which it  may deem  sufficient.   Any request or  consent of  any
          Owner of a Bond shall bind every future Owner of the same Bond or
          any Bond or  Bonds issued in lieu thereof in  respect of anything
          done by the Trustee or  the City in pursuance of such  request or
          consent.


                                     ARTICLE XII

                MODIFICATION OF THIS ORDINANCE AND THE SALE AGREEMENT

               Section 12.01. Limitations.  Neither  this Ordinance nor the
          Sale  Agreement  shall  be  modified or  amended  in  any respect
          subsequent  to the  original  issuance  of  the Bonds  except  as
          provided  in and in accordance with and subject to the provisions
          of this Article XII and Section 7.04 hereof.

               The Trustee may, but  shall not be obligated to,  accept any
          Supplemental  Ordinance which affects  the Trustee's  own rights,
          duties or immunities under this Ordinance or otherwise.

               Section 12.02. Supplemental    Ordinances   without    Owner
          Consent.   The City  may,  from time  to time  and  at any  time,
          without the  consent of  or notice  to the  Owners of the  Bonds,
          adopt,  and the  Trustee may  accept, Supplemental  Ordinances as
          follows:

                    (a) to cure any formal defect, omission,  inconsistency
               or ambiguity in this Ordinance, provided, however, that such
               cure shall not materially and adversely affect the interests
               of the Owners of the Bonds;

                    (b)  to grant to or  confer or impose  upon the Trustee
               for  the benefit of the  Owners of the  Bonds any additional
               rights, remedies, powers,  authority, security,  liabilities
               or  duties  which  may  lawfully be  granted,  conferred  or
               imposed;

                    (c)  to add  to the  covenants and  agreements  of, and
               limitations  and   restrictions  upon,  the  City   in  this
               Ordinance  other  covenants,  agreements,   limitations  and
               restrictions to be observed by the City;

                    (d) to confirm, as further assurance, any pledge under,
               and the subjection to  any claim, lien or pledge  created or
               to be  created  by,  this  Ordinance, of  the  Receipts  and
               Revenues of the City from the Sale Agreement or of any other
               moneys, securities or funds;

                    (e)   to   authorize   a   different   denomination  or
               denominations  of  the   Bonds  and   to  make   correlative
               amendments  and modifications  to  this Ordinance  regarding
               exchange  ability  of  Bonds  of   different  denominations,
               redemptions of portions of Bonds of particular denominations
               and  similar amendments  and  modifications of  a  technical
               nature;

                    (f)  to  modify,   alter,  supplement  or  amend   this
               Ordinance in  such manner as shall  permit the qualification
               hereof under the Trust  Indenture Act of 1939, as  from time
               to time amended;

                    (g)  to   modify,  alter,  supplement  or   amend  this
               Ordinance in such manner as shall be necessary, desirable or
               appropriate  in  order  to  provide  for  or  eliminate  the
               registration  and registration  of  transfer  of  the  Bonds
               through a book-entry  or similar method, whether  or not the
               Bonds are evidenced by certificates;

                    (h)  to   modify,  alter,  amend  or   supplement  this
               Ordinance  in  any other  respect  which  is not  materially
               adverse  to the Owners and  which does not  involve a change
               described  in clause  (i),  (ii), (iii)  or (iv)  of Section
               12.03(a) hereof; and

                    (i) to provide any additional procedures, covenants  or
               agreements necessary or desirable to maintain the tax-exempt
               status of interest on the Bonds.

               Before the City  shall adopt, and the  Trustee shall accept,
          any Supplemental Ordinance pursuant to this  Section 12.02, there
          shall have been delivered to the City and the Trustee  an opinion
          of  Bond  Counsel stating  that  such  Supplemental Ordinance  is
          authorized  or permitted by this  Ordinance and the Act, complies
          with their respective terms, will,  upon the adoption thereof, be
          valid and binding upon the City in  accordance with its terms and
          will not, in and  of itself, adversely affect the  exclusion from
          gross  income for  federal tax  purposes of  the interest  on the
          Bonds.

               Section 12.03. Supplemental   Ordinances  with   Consent  of
          Owners.    (a)  Except  for any  Supplemental  Ordinance  adopted
          pursuant to  Section  12.02  hereof, subject  to  the  terms  and
          provisions contained in this Section  12.03 and Section 12.05 and
          not  otherwise, Owners of not  less than a  majority in aggregate
          principal  amount of  the Bonds then  Outstanding which  would be
          adversely affected thereby shall have the right from time to time
          to  consent  to  and  approve  the  adoption  by  the  City,  and
          acceptance by  the Trustee, of any  Supplemental Ordinance deemed
          necessary or desirable by the City for the purposes of modifying,
          altering,  amending,   supplementing   or  rescinding,   in   any
          particular,  any of  the terms  or provisions  contained  in this
          Ordinance; provided, however, that, unless approved in writing by
          the  Owners  of all  the Bonds  then  Outstanding which  would be
          adversely   affected  thereby,  nothing  herein  contained  shall
          permit, or be construed as permitting, (i) a change in the times,
          amounts or currency of payment of the principal of or premium, if
          any,  or interest  on any  Outstanding Bond,  a reduction  in the
          principal amount or redemption price of any Outstanding Bond or a
          change in  the rate of interest thereon, or any impairment of the
          right of any Owner to institute suit for the payment  of any Bond
          owned by it, or (ii)  the creation of a claim or lien  upon, or a
          pledge  of, the Receipts  and Revenues of the  City from the Sale
          Agreement ranking prior to or on a parity with the claim, lien or
          pledge  created  by  this Ordinance  (except  as  referred  to in
          Section 10.04 hereof), or  (iii) a preference or priority  of any
          Bond  or Bonds over any other Bond  or Bonds, or (iv) a reduction
          in the aggregate  principal amount  of Bonds the  consent of  the
          Owners of which  is required for any such  Supplemental Ordinance
          or  which  is required,  under  Section  12.07  hereof,  for  any
          modification, alteration,  amendment  or supplement  to the  Sale
          Agreement.

               (b)  If at any  time the City  shall request  the Trustee to
          accept any Supplemental Ordinance for any of the purposes of this
          Section 12.03, the  Trustee shall  cause notice  of the  proposed
          Supplemental  Ordinance  to be  given by  Mail  to all  Owners of
          Outstanding Bonds.    Such notice  shall  briefly set  forth  the
          nature  of the  proposed Supplemental  Ordinance and  shall state
          that a  copy thereof is  on file at  the Principal Office  of the
          Trustee for inspection by all Owners of Bonds.

               (c) Within two years  after the date of the first mailing of
          such notice, the City may adopt, and the Trustee may accept, such
          Supplemental Ordinance  in  substantially the  form described  in
          such notice only if there shall have first been delivered  to the
          Trustee (i) the required consents, in writing, of Owners of Bonds
          and  (ii)  an   opinion  of  Bond   Counsel  stating  that   such
          Supplemental   Ordinance  is  authorized  or  permitted  by  this
          Ordinance and the Act, complies with their  respective terms and,
          upon the adoption  thereof, will  be valid and  binding upon  the
          City in accordance with its terms and will not, in and of itself,
          adversely affect the exclusion from  gross income for federal tax
          purposes of the interest on the Bonds.

               (d)  If  Owners of  not less  than  the percentage  of Bonds
          required by  this  Section  12.03 shall  have  consented  to  and
          approved the  execution and delivery thereof  as herein provided,
          no Owner shall have any  right to object to the adoption  of such
          Supplemental  Ordinance, or  to object  to any  of the  terms and
          provisions contained  therein or the operation thereof, or in any
          manner to question the  propriety of the adoption thereof,  or to
          enjoin or restrain  the City  or the Trustee  from executing  and
          delivering the same  or from  taking any action  pursuant to  the
          provisions thereof.

               Section 12.04. Effect of  Supplemental Ordinance.   Upon the
          adoption of any Supplemental Ordinance pursuant to the provisions
          of this Article  XII, this Ordinance shall  be, and be  deemed to
          be,  modified,  altered,  amended or  supplemented  in accordance
          therewith, and  the  respective rights,  duties  and  obligations
          under  this Ordinance of the City,  the Trustee and Owners of all
          Bonds then Outstanding shall thereafter be determined,  exercised
          and enforced under this Ordinance subject in all respects to such
          modifications, alterations, amendments and supplements.

               Section 12.05. Consent of the Company.   Anything herein  to
          the  contrary notwithstanding,  any Supplemental  Ordinance under
          this Article  XII which affects any rights, powers, agreements or
          obligations of the Company under  the Sale Agreement, or requires
          a  revision  of the  Sale Agreement,  shall not  become effective
          unless  and  until  the  Company  shall  have  consented to  such
          Supplemental Ordinance.

               Section 12.06. Amendment of Sale  Agreement without  Consent
          of Owners.  Without the consent of or notice to the Owners of the
          Bonds, the  City may enter into any  Supplemental Sale Agreement,
          and  the Trustee may  consent thereto, as may  be required (a) by
          the  provisions of the Sale Agreement and this Ordinance, (b) for
          the purpose of curing  any formal defect, omission, inconsistency
          or ambiguity  therein, (c) to provide  any additional procedures,
          covenants or  agreements necessary  or desirable to  maintain the
          tax-exempt  status of interest on the Bonds, or (d) in connection
          with  any other change therein which is not materially adverse to
          the Owners of the Bonds.

               Before the  City shall  enter into,  and  the Trustee  shall
          consent  to, any  Supplemental  Sale Agreement  pursuant to  this
          Section  12.06, there shall have  been delivered to  the City and
          the  Trustee  an  opinion  of  Bond  Counsel  stating  that  such
          Supplemental Sale  Agreement is  authorized or permitted  by this
          Ordinance  and the  Act,  complies with  their respective  terms,
          will,  upon the  execution  and delivery  thereof,  be valid  and
          binding  upon the  City and  the Company  in accordance  with its
          terms  and will  not,  in and  of  itself, adversely  affect  the
          exclusion from  gross income for federal tax purposes of interest
          on the Bonds.

               Section 12.07. Amendment of  Sale Agreement with  Consent of
          Owners.   Except  in the  case  of Supplemental  Sale  Agreements
          referred to in  Section 12.06  hereof, the City  shall not  enter
          into, and the Trustee shall not consent to, any Supplemental Sale
          Agreement without the written approval  or consent of the  Owners
          of not less than a majority in  aggregate principal amount of the
          Bonds then Outstanding which would be adversely affected thereby,
          given and procured as provided in Section 12.03 hereof; provided,
          however,  that, unless approved in  writing by the  Owners of all
          Bonds then Outstanding which would be adversely affected thereby,
          nothing  herein  contained  shall  permit,  or  be  construed  as
          permitting,  a change  in the  obligations of  the  Company under
          Section 5.02 of the  Sale Agreement.  If at any  time the City or
          the  Company shall request the consent of the Trustee to any such
          proposed  Supplemental  Sale Agreement,  the Trustee  shall cause
          notice of such proposed  Supplemental Sale Agreement to be  given
          in  the  same manner  as provided  by  Section 12.03  hereof with
          respect to  Supplemental Ordinances.   Such notice  shall briefly
          set forth the nature of such proposed Supplemental Sale Agreement
          and  shall state that copies of the instrument embodying the same
          are on file at the Principal Office of the Trustee for inspection
          by  all Owners of  the Bonds.   The City may  enter into, and the
          Trustee  may  consent to,  any  such  proposed Supplemental  Sale
          Agreement  subject  to the  same  conditions, and  with  the same
          effect,  as provided  by  Section 12.03  hereof  with respect  to
          Supplemental Ordinances.


                                     ARTICLE XIII

                                    MISCELLANEOUS

               Section 13.01. Successors of the City.  In the event of  the
          dissolution  of  the  City,   all  the  covenants,  stipulations,
          promises and  agreements in  this Ordinance  contained, by  or on
          behalf  of, or for the benefit of,  the City, shall bind or inure
          to the  benefit of the successors  of the City from  time to time
          and  any   entity,   officer,  board,   commission,   agency   or
          instrumentality to whom or to which any power or duty of the City
          shall be transferred.

               Section 13.02. Parties   in  Interest.    Except  as  herein
          otherwise  specifically  provided,   nothing  in  this  Ordinance
          expressed  or implied is intended or shall be construed to confer
          upon any person,  firm or  corporation other than  the City,  the
          Company  and the Trustee and their successors and assigns and the
          Owners of the Bonds any right, remedy or claim under or by reason
          of  this Ordinance, this Ordinance  being intended to  be for the
          sole  and  exclusive benefit  of the  City,  the Company  and the
          Trustee  and their successors and  assigns and the  Owners of the
          Bonds.

               Section 13.03. Ratification  of  Prior Action.    All action
          (not  inconsistent  with   the  provisions  of  this   Ordinance)
          heretofore taken by the City Council and the officers of the City
          directed toward the  refunding of  the Prior Bonds  and sale  and
          issuance of the Bonds and all action taken in connection with the
          use of proceeds of the Prior Bonds insofar as consistent with the
          Act, is ratified, approved and confirmed.

               Section 13.04. Severability.  In case any one or more of the
          provisions of this Ordinance or  of the Sale Agreement or  of the
          Bonds shall, for any  reason, be held to  be illegal or  invalid,
          such  illegality  or  invalidity   shall  not  affect  any  other
          provisions of this Ordinance or of the Sale  Agreement or of such
          Bonds, and this Ordinance  and the Sale Agreement and  such Bonds
          shall be construed  and enforced  as if such  illegal or  invalid
          provisions had not been contained herein or therein.

               Section 13.05. No Personal Liability of City Officials.   No
          covenant or agreement contained in the Bonds or in this Ordinance
          shall be deemed to be the covenant or agreement of any  director,
          official,  officer,  agent,  or  employee  of  the  City  in  his
          individual capacity, and  neither the members of the City Council
          of the City nor any official  executing the Bonds shall be liable
          personally on the Bonds  or be subject to any  personal liability
          or accountability by reason of the issuance thereof.

               Section 13.06. Bonds Owned by  the City or the  Company.  In
          determining whether  Owners of the requisite  aggregate principal
          amount of the Bonds  have concurred in any direction,  consent or
          waiver under this Ordinance, Bonds which are owned by the City or
          the  Company or by any  person directly or indirectly controlling
          or  controlled by or under direct or indirect common control with
          the Company (unless the City, the Company or such person owns all
          Bonds which  are then  Outstanding, determined without  regard to
          this Section 13.05)  shall be  disregarded and deemed  not to  be
          Outstanding  for the  purpose of  any such  determination, except
          that, for the purpose of determining whether the Trustee shall be
          protected in  relying on any  such direction, consent  or waiver,
          only  Bonds which  the Trustee  knows are  so owned  shall be  so
          disregarded.   Upon the request  of the Trustee,  the Company and
          the City shall  furnish to the Trustee  a certificate identifying
          all Bonds, if any, actually  known to either of them to  be owned
          or  held by  or for  the account  of  any of  the above-described
          persons,  and the  Trustee  shall be  entitled  to rely  on  such
          certificate as conclusive evidence of the facts set forth therein
          and that all other Bonds are Outstanding for the purposes of such
          determination.   Bonds so owned  which have been  pledged in good
          faith may be  regarded as Outstanding if the  pledgee establishes
          to the satisfaction  of the Trustee the pledgee's right so to act
          with respect to  such Bonds and that the pledgee  is not the City
          or the Company or any  person directly or indirectly  controlling
          or  controlled by or under direct or indirect common control with
          the Company. In case of a  dispute as to such right, any decision
          by the Trustee  taken upon  the advice of  counsel shall be  full
          protection to the Trustee.

               Section 13.07. Acceptance by  Trustee.  The execution by the
          party  designated and appointed as  Trustee of the acceptance set
          forth at the end of this Ordinance certified by the City Clerk of
          the  City shall  be sufficient  to constitute  said party  as the
          Trustee  hereunder  in  accordance  with  the  provisions  hereof
          without the execution of any other instrument.

               Section 13.08. Governing Law.  The laws of  the State of New
          Mexico  shall govern  the  construction and  enforcement of  this
          Ordinance and of all Bonds.

               Section 13.09. Notices.   Except  as  otherwise provided  in
          this Ordinance, all notices, certificates,  requests requisitions
          or other communications  by the City,  the Company, the  Trustee,
          the Paying Agent, any  Co-Paying Agent or the Registrar  pursuant
          to this Ordinance shall  be in writing and shall  be sufficiently
          given and shall be  deemed given when mailed by  registered mail,
          postage prepaid, addressed as  follows:  If  to the City, at  800
          Municipal   Drive,  Farmington,  New   Mexico  87401,  Attention:
          Treasurer; if to the  Company, at 220 West Sixth  Street, Tucson,
          Arizona 85702, Attention:   Treasurer; if to the Trustee,  at the
          address  specified in the resolution  of the City  Council of the
          City  appointing  the  Trustee;  if  to  the  Paying  Agent,  any
          Co-Paying Agent  or the Registrar,  at the address  designated in
          the  acceptance  of  appointment  or  engagement.    Any  of  the
          foregoing may, by notice  given hereunder to each of  the others,
          designate any further or  different addresses to which subsequent
          notices, certificates, requests or other  communications shall be
          sent hereunder.

               Section 13.10. Holidays.  If the date for making any payment
          or the last date for performance of any act or  the exercising of
          any  right, as provided in  this Ordinance, shall  be a Saturday,
          Sunday or  a public holiday in  the city in which  is located the
          Principal  Office of the Trustee, such payment may be made or act
          performed or right exercised on the next succeeding business day,
          with  the same force  and effect as  if done on  the nominal date
          provided  in this Ordinance, and no interest shall accrue for the
          period after such nominal date.  If the last day of any period of
          grace, as provided in this Ordinance, shall be a Saturday, Sunday
          or a public holiday in the city in which is located the Principal
          Office of the Trustee, the last day of such period of grace shall
          be deemed to be the next succeeding business day.

               Section 13.11. Emergency Circumstances.  The City Council of
          the City declares that emergency circumstances exist which are of
          an immediate danger to  the public health, safety and  welfare of
          the City and that this Ordinance shall therefore take effect five
          days after publication in The Farmington Daily Times of the title
          and a general summary of the subject matter thereof.

   <PAGE> 

               Passed, Adopted, Signed and Approved this 17th day of April,
          1997.




          (SEAL) 			/s/ Thomas C. Taylor
					------------------------
                                                   Mayor

          Attest:

                /s/ Mary L. Banks
          --------------------------------------------
                    City Clerk


               I,  Thomas C. Taylor, Mayor  of the City  of Farmington, New
          Mexico,  do  hereby  declare  that, pursuant  to  Section  3-17-3
          N.M.S.A.  1978, this  Ordinance  deals with  an  emergency of  an
          immediate  danger to the public health, safety and welfare of the
          City, and any publication of such Ordinance prior to its adoption
          is hereby declared to be unnecessary.


			/s/ Thomas C. Taylor
          ---------------------------------------------------------------
                                   Mayor


                         ACCEPTANCE OF DUTIES BY THE TRUSTEE


                    First  Trust  of  New  York,  National  Association, as
          Trustee, hereby accepts as of April 29, 1997  the trust under the
          foregoing Ordinance and the duties and obligations imposed on the
          Trustee thereby.



          FIRST TRUST OF NEW YORK,
                                               NATIONAL ASSOCIATION



                                             By /s/ Patrick J. Crowley	
						-----------------------	
                                                  Authorized Officer

          Attest:

		/s/ Steven Haas
          ----------------------------------------
                    Authorized Officer


   <PAGE> 
                                                                  EXHIBIT A


                                    (FORM OF BOND)

          No.


                            CITY OF FARMINGTON, NEW MEXICO
                           POLLUTION CONTROL REVENUE BOND,
                                    1997 SERIES A
                   (TUCSON ELECTRIC POWER COMPANY SAN JUAN PROJECT)

          INTEREST RATE (PER ANNUM):
          MATURITY DATE:                                         DATED:
          CUSIP:
          REGISTERED OWNER:
          PRINCIPAL AMOUNT:                                      DOLLARS


               The City of Farmington, an incorporated municipality, a body
          politic and  corporate, existing under the  Constitution and laws
          of  the  State  of New  Mexico,  United  States  of America  (the
          "City"), for value received, hereby promises to pay (but only out
          of the Receipts and Revenues of the City from the Sale Agreement,
          as hereinafter defined, and other moneys pledged therefor) to the
          Registered Owner  identified above or registered  assigns, on the
          Maturity  Date  set  forth   above,  upon  the  presentation  and
          surrender hereof, the Principal Amount set forth above and to pay
          (but  only out of the Receipts and  Revenues of the City from the
          Sale Agreement  and other  moneys pledged therefor),  interest on
          said Principal Amount until payment of said  Principal Amount has
          been made  or duly  provided for,  from the  date hereof,  at the
          Interest Rate set forth above, semi-annually on the first days of
          October  and April  in  each year,  commencing  October 1,  1997.
          Interest will  be calculated on  the basis of  a 360-day year  of
          twelve 30-day months.

               The  principal  of and  premium, if  any,  on this  Bond are
          payable  at  the principal  office of  First  Trust of  New York,
          National Association, as Paying Agent, or at the principal office
          of any co-paying agent appointed in accordance with the Ordinance
          (as hereinafter defined), at  the option of the Registered  Owner
          hereof.  Interest on this Bond is payable by check drawn upon the
          Paying Agent and mailed to  the Registered Owner of this Bond  as
          of the  close of business on  the Record Date (as  defined in the
          Ordinance), at  the registered address of  such Registered Owner;
          notwithstanding the  foregoing, upon request to  the Paying Agent
          by  a Registered Owner of  not less than  $1,000,000 in aggregate
          principal amount  of  Bonds, interest  on such  Bonds and,  after
          presentation and  surrender of such Bonds,  the principal thereof
          shall be  paid to such Registered  Owner by wire  transfer to the
          account maintained within the continental United States specified
          by such Registered Owner  or, if such Registered  Owner maintains
          an account with  the entity  acting as Paying  Agent, by  deposit
          into such  account.  Payment of the  principal of and premium, if
          any,  and interest on this Bond shall  be in any coin or currency
          of the United  States of America as,  at the respective  times of
          payment,  shall be  legal tender  for the  payment of  public and
          private debts.  
               As more fully provided  in the Ordinance, the Bonds  and the
          premium, if any, and interest thereon are not general obligations
          to  which the full faith and credit  of the City are pledged, but
          are  limited obligations of the  City, which is  obligated to pay
          the principal of  and premium, if any, and interest  on the Bonds
          only  out of the Receipts and Revenues  of the City from the Sale
          Agreement.   This Bond does  not, and shall  never, constitute an
          indebtedness  of  the  City  within  the  meaning  of  any  state
          constitutional provision or statutory limitation, and shall never
          constitute or give rise to a pecuniary liability of the City or a
          charge against its general credit or taxing powers.

               This Bond is one  of the duly  authorized issue of bonds  of
          the  City designated  as  Pollution Control  Revenue Bonds,  1997
          Series A (Tucson  Electric Power  Company San Juan  Project) (the
          "Bonds"), aggregating Eighty  Million Four  Hundred Ten  Thousand
          Dollars  ($80,410,000) in  principal  amount,  issued  under  and
          pursuant to the Constitution and laws of the State of New Mexico,
          particularly the Pollution Control Revenue Bond Act, Chapter 397,
          Laws of 1973  of the State of  New Mexico, 31st  Legislature, 1st
          Session, as amended (the "Act"), and Ordinance No. 97-1055 of the
          City adopted April 17, 1997  by the City Council of the  City and
          Resolution 
          No. 97-879  of  the City,  adopted  April 17,  1997  by the  City
          Council of  the City (collectively  the "Ordinance").   The Bonds
          are being issued to refund certain prior bonds issued by the City
          for the benefit of  Tucson Electric Power Company   a corporation
          organized and existing  under the  laws of the  State of  Arizona
          (the "Company"), for  the purpose  of defraying the  cost to  the
          Company  of  the acquisition,  construction  and  installation of
          certain  air   and  water   pollution  control  facilities   (the
          "Facilities")  at  Units  1 and  2  of  the  San Juan  Generating
          Station,  an  electric  power  generating  plant  located  within
          fifteen miles of the corporate limits of the City  but not within
          the corporate limits of any municipality, in San Juan County, New
          Mexico.   Pursuant  to an Amended  and Restated  Installment Sale
          Agreement (amending and restating the Original Sale Agreements as
          defined in the  Ordinance), dated as of April 1,  1997 (the "Sale
          Agreement"),  between the City and the Company, the prior sale by
          the  Company to the City of undivided interests in the Facilities
          and  the prior  sale  back of  such  undivided interests  in  the
          Facilities by the City to the Company has been confirmed.

               The  Bonds are  equally and ratably  secured, to  the extent
          provided  in  the  Ordinance, by  the  pledge  thereunder  of the
          "Receipts  and Revenues  of the  City from  the Sale  Agreement",
          which term is  used herein as defined in the  Ordinance and which
          as  therein defined  means  all moneys  paid  or payable  to  the
          Trustee for  the account of the City by the Company in respect of
          the  Purchase Price Payments (as such term is defined in the Sale
          Agreement), including  all receipts  of the Trustee  which, under
          the provisions  of  the Ordinance,  reduce  the amounts  of  such
          payments.  The City has also pledged  and assigned to the Trustee
          as  security for the Bonds all  other rights and interests of the
          City  under  the  Sale  Agreement   (other  than  its  rights  to
          indemnification and its administrative expenses and certain other
          rights).

               The  transfer  of this  Bond  shall be  registered  upon the
          registration books kept at the principal office of First Trust of
          New  York, National  Association,  as Registrar,  at the  written
          request  of  the registered  owner  hereof or  his  attorney duly
          authorized  in  writing,  upon surrender  of  this  Bond  at said
          office,  together   with   a  written   instrument  of   transfer
          satisfactory  to the  Registrar duly  executed by  the registered
          owner or his duly authorized attorney.

               In the manner and with the effect provided in the Ordinance,
          each of the Bonds may be redeemed prior to maturity, as follows:

                    (a)  The Bonds  shall be subject  to redemption  by the
               City, at  the direction of  the Company, on  any date on  or
               after October  1, 2007, in whole at any time or in part from
               time to time, at  the applicable redemption price (expressed
               as  a percentage of principal amount)  set forth below, plus
               accrued interest to the redemption date:

                    Redemption Period                  Redemption Price
                    ------------------                 ----------------

               October 1, 2007 through September 30, 2008          102%
               October 1, 2008 through September 30, 2009          101%
               October 1, 2009 and thereafter                      100%


                    (b)   The Bonds shall  be subject to  redemption by the
               City, at the direction of the Company, in whole  at any time
               at the principal amount thereof plus accrued interest to the
               redemption date, if:

                         (i)  the Company  shall have  determined  that the
                    continued  operation of  the Plant  (as defined  in the
                    Ordinance)    is    impracticable,   uneconomical    or
                    undesirable for any reason;

                         (ii)  the Company  shall have determined  that the
                    continued operation of the Facilities is impracticable,
                    uneconomical or  undesirable due to (A)  the imposition
                    of taxes, other than  ad valorem taxes currently levied
                    upon privately owned property used for the same general
                    purpose  as  the Facilities,  or  other liabilities  or
                    burdens  with  respect to  the Facilities  or operation
                    thereof,  (B) changes  in technology,  in environmental
                    standards or  legal  requirements or  in  the  economic
                    availability of materials, supplies, equipment or labor
                    or (C) destruction  of or damage to all or  part of the
                    Facilities;

                         (iii) all or  substantially all of the  Facilities
                    or  the  Plant shall  have been  condemned or  taken by
                    eminent domain; or

                         (iv) the operation of  the Facilities or the Plant
                    shall have  been enjoined or shall  have otherwise been
                    prohibited by,  or  shall  conflict  with,  any  order,
                    decree,  rule  or regulation  of  any court  or  of any
                    federal, state or local regulatory body, administrative
                    agency or other governmental body.

                    (c)  The Bonds shall be subject to mandatory redemption
               by  the City, at  the principal amount  thereof plus accrued
               interest to the redemption  date, on the 180th day  (or such
               earlier  date as may be  designated by the  Company) after a
               final determination by a  court of competent jurisdiction or
               an administrative agency, to the effect that, as a result of
               a failure by the Company to perform or observe any covenant,
               agreement or representation contained in the Sale Agreement,
               the interest payable  on the Bonds  is included for  Federal
               income tax  purposes  in  the  gross income  of  the  owners
               thereof,  other  than  any   owner  of  a  Bond  who   is  a
               "substantial user"  of the Facilities or  a "related person"
               within  the meaning  of Section  103(b)(13) of  the Internal
               Revenue Code of 1954 (the "1954 Code").  No determination by
               any court or administrative agency shall be considered final
               for the  purposes of this  paragraph (c) unless  the Company
               shall have been given timely  notice of the proceeding which
               resulted  in  such  determination  and   an  opportunity  to
               participate in such proceeding,  either directly or  through
               an  owner of  a  Bond,  and  until  the  conclusion  of  any
               appellate  review sought by any  party to such proceeding or
               the  expiration of  the time  for seeking  such review.  The
               Bonds shall be  redeemed either in whole or  in part in such
               principal  amount that  the  interest payable  on the  Bonds
               remaining  outstanding  after such  redemption would  not be
               included in  the gross  income of  any owner  thereof, other
               than  an owner of a Bond who  is a "substantial user" of the
               Facilities  or  a "related  person"  within  the meaning  of
               Section 103(b)(13) of the 1954 Code.

               If less than all of the Bonds at the time outstanding are to
          be  called for redemption,  the particular  Bonds or  portions of
          Bonds to be redeemed  shall be selected  by the Trustee, in  such
          manner as the Trustee in  its discretion may deem proper,  in the
          principal amounts  designated to  the Trustee  by the  Company or
          otherwise as required by the Ordinance.

               In the event any of the Bonds are called for redemption, the
          Trustee  shall give  notice,  in the  name  of the  City,  of the
          redemption of such  Bonds.  Such notice shall be given by mailing
          a  copy of  the redemption  notice by  first-class mail  at least
          thirty (30) days  prior to the date  fixed for redemption to  the
          Registered  Owners of the Bonds  to be redeemed  at the addresses
          shown on the registration  books; provided, however, that failure
          duly to give such notice by mailing, or any defect therein, shall
          not  affect the validity of any proceedings for the redemption of
          the Bonds as to which there shall be no such failure or defect.

               With  respect  to  any  notice of  redemption  of  Bonds  in
          accordance  with the  redemption provisions  lettered (a)  or (b)
          above, unless, upon the  giving of such notice, such  Bonds shall
          be deemed to have been paid  within the meaning of the Ordinance,
          such  notice   shall  state   that  such  redemption,   shall  be
          conditional  upon the receipt, by the  Trustee on or prior to the
          opening  of business  on the  date fixed  for such  redemption of
          moneys  sufficient to pay the  principal of and  premium, if any,
          and  interest on  such Bonds  to be  redeemed, and  that  if such
          moneys shall not have been so received said notice shall be of no
          force  and effect and  the City shall  not be  required to redeem
          such  Bonds. In the event that such notice of redemption contains
          such  a  condition  and such  moneys  are  not  so received,  the
          redemption  shall  not be  made and  the  Trustee shall  within a
          reasonable time thereafter  give notice, in  the manner in  which
          the notice of redemption was given, that  such moneys were not so
          received.

               If  a notice of redemption shall be unconditional, or if the
          conditions of a conditional notice of redemption  shall have been
          satisfied,  then  upon presentation  and  surrender  of Bonds  so
          called for redemption  at the  place or places  of payment,  such
          Bonds shall be redeemed.

               Any  Bonds  and  portions  of  Bonds  which  have been  duly
          selected for  redemption  shall cease  to  bear interest  on  the
          specified redemption date provided  that moneys sufficient to pay
          the principal of,  premium, if  any, and interest  on such  Bonds
          shall be  on  deposit with  the  Trustee on  the  date fixed  for
          redemption so  that such  Bonds  will be  deemed  to be  paid  in
          accordance  with the  Ordinance and  such Bonds  shall thereafter
          cease to be  entitled to any lien, benefit or  security under the
          Ordinance.

               The  owner of this Bond  shall have no  right to enforce the
          provisions of the  Ordinance, or to  institute action to  enforce
          the covenants therein, or to take  any action with respect to any
          default under the Ordinance, or to institute, appear in or defend
          any suit  or other  proceeding  with respect  thereto, except  as
          provided in the Ordinance.

               With certain exceptions  as provided therein,  the Ordinance
          and the Sale Agreement may  be modified or amended only with  the
          consent of the owners of a majority in aggregate principal amount
          of  all  Bonds outstanding  under  the Ordinance  which  would be
          adversely affected thereby.

               Reference  is  hereby made  to  the Ordinance  and  the Sale
          Agreement, copies of which are on file with the  Trustee, for the
          provisions, among others,  with respect to the  nature and extent
          of the rights, duties  and obligations of the City,  the Company,
          the  Trustee  and  the  Registered  Owners  of  the   Bonds.  The
          Registered Owner  of  this Bond,  by  the acceptance  hereof,  is
          deemed to have agreed  and consented to the terms  and provisions
          of the Ordinance and the Sale Agreement.

               Among other things, as provided in the Ordinance and subject
          to  certain  limitations  therein set  forth,  this  Bond  or any
          portion of the  principal amount  hereof will be  deemed to  have
          been paid within the meaning and with the effect expressed in the
          Ordinance, and  the entire indebtedness  of the  City in  respect
          thereof  shall be  satisfied and  discharged,  if there  has been
          irrevocably deposited  with the  Trustee, in  trust, money in  an
          amount which will be sufficient and/or Government Obligations (as
          defined in  the  Ordinance), the  principal  of and  interest  on
          which, when due, without regard to any reinvestment thereof, will
          provide moneys which, together with moneys deposited with or held
          by the Trustee, will be sufficient, to pay when due the principal
          of and premium, if any, and interest on this Bond or such portion
          of the principal amount hereof when due.

               Among  other things,  the  Sale  Agreement  contains  terms,
          provisions and conditions relating to the consolidation or merger
          of the  Company with  or into,  and the  sale, transfer or  other
          disposition, of assets to, another Person (as defined in the Sale
          Agreement),  to  the  assumption   by  such  Person,  in  certain
          circumstances, of all of the obligations of the Company under the
          Sale Agreement and to  the release and discharge of  the Company,
          in certain circumstances, from such obligations.

               The  City, the Trustee, the  Registrar, the Paying Agent and
          any  co-paying agent may deem and  treat the person in whose name
          this  Bond is  registered as  the absolute  owner hereof  for all
          purposes,  whether or not this  Bond is overdue,  and neither the
          City,  the  Trustee,  the Registrar,  the  Paying  Agent  nor any
          co-paying agent shall be affected by any notice to the contrary.

               It is hereby certified, recited and declared that  all acts,
          conditions  and things required  by the Constitution  and laws of
          the  State of New Mexico,  the governing rules  and procedures of
          the City and the Ordinance to exist, to have happened and to have
          been performed, precedent to and in the adoption of the Ordinance
          and the issuance  of this Bond, do exist,  have happened and have
          been performed in regular and due form as required by law.

               No  covenant  or agreement  contained  in this  Bond  or the
          Ordinance  shall be deemed  to be a covenant  or agreement of any
          official,   officer,  agent  or  employee  of  the  City  in  his
          individual capacity, and  neither the members of the City Council
          of  the  City, nor  any official  executing  this Bond,  shall be
          liable  personally on  this Bond  or be  subject to  any personal
          liability  or accountability by reason of the issuance or sale of
          this Bond.

               This  Bond shall  not be  entitled to  any right  or benefit
          under the Ordinance,  or be  valid or become  obligatory for  any
          purpose, until  this Bond  shall have been  authenticated by  the
          execution  by the  Trustee, or  its successor  as Trustee  of the
          certificate of authentication inscribed hereon.

                IN WITNESS WHEREOF, the City of Farmington, New Mexico, has
          caused this Bond to be executed in its  name and on its behalf by
          its Mayor and Treasurer or Deputy City  Treasurer, each by his or
          her manual or facsimile  signature, and has caused  the corporate
          seal  of the City to  be affixed, impressed  or reproduced hereon
          and  attested  by  the  City Clerk  with  his  or  her manual  or
          facsimile signature.




                                             CITY OF FARMINGTON, NEW MEXICO



                                             By___________________________
                                                 Mayor



                                             By____________________________
                                                Deputy City Treasurer


          (Seal)



          ATTEST:




          --------------------------------------
                    City Clerk


   <PAGE> 
                                                                  EXHIBIT B


                     (FORM FOR ORDINARY REGISTRATION OF TRANSFER)

                       COMPLETE AND SIGN THIS FORM FOR ORDINARY
                               REGISTRATION OF TRANSFER


          FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
          transfer(s) unto

          Please  Insert Social  Security  Or Other  Identifying Number  of
          Assignee

          -----------------------------------------------------------------
          --

          -----------------------------------------------------------------
          --
          Please print or typewrite  name and address including  postal zip
          code of assignee

          -----------------------------------------------------------------
          -
          this  bond   and  all   rights  thereunder,  hereby   irrevocably
          constituting and appointing
                                             attorney   to  register   such
          transfer on the registration books in the principal office of the
          Registrar, with full power of substitution in the premises.

          Dated:___________   -------------------------------------------
                              NOTE:   The signature on this assignment must
                              correspond  with the name  as written  on the
                              face  of  this  Bond  in   every  particular,
                              without alteration, enlargement or any change
                              whatsoever.


   <PAGE>

                                                                  EXHIBIT C

                  (FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION)

                            CERTIFICATE OF AUTHENTICATION

                    This  is to certify that this Bond  is one of the Bonds
               described in the within-mentioned Ordinance.


                     First Trust of New York, National Association,
                                   as Trustee

                      By________________________________________
                                          Authorized Officer
 
                   Date of Authentication:____________________



                                                          EXHIBIT 4c
          =================================================================



                                    LOAN AGREEMENT



                                       BETWEEN



                               COCONINO COUNTY, ARIZONA

                            POLLUTION CONTROL CORPORATION



                                         AND



                            TUCSON ELECTRIC POWER COMPANY




                                 --------------------




                              DATED AS OF APRIL 1, 1997



                                ---------------------



                                     RELATING TO

                           POLLUTION CONTROL REVENUE BONDS,
                                    1997 SERIES A
                    (TUCSON ELECTRIC POWER COMPANY NAVAJO PROJECT)



          ================================================================

     <PAGE> 
                                  TABLE OF CONTENTS

                                                                       Page
								      -----
             LOAN AGREEMENT . . . . . . . . . . . . . . . . . . . . . .   1

                                      ARTICLE I

                                     DEFINITIONS

               SECTION 1.01  Definitions  . . . . . . . . . . . . . . .   1
               SECTION 1.02  Incorporation of Certain Definitions by
                            Reference . . . . . . . . . . . . . . . . .   5

                                      ARTICLE II

                            REPRESENTATIONS AND WARRANTIES

               SECTION 2.01  Representations and Warranties of the
                            Pollution Control Corporation . . . . . . .   5
               SECTION 2.02  Representations and Warranties of the
                             Company  . . . . . . . . . . . . . . . . .   6

                                     ARTICLE III

                                    THE FACILITIES

               SECTION 3.01  Construction of the Facilities . . . . . .   7
               SECTION 3.02  Insufficient Moneys in Construction Fund .   7
               SECTION 3.03  Revision of Plans and Specifications . . .   7
               SECTION 3.04  Certification of Completion Date . . . . .   7
               SECTION 3.05  Maintenance of Facilities; Remodeling  . .   8
               SECTION 3.06  Insurance  . . . . . . . . . . . . . . . .   8
               SECTION 3.07  Condemnation . . . . . . . . . . . . . . .   8
               SECTION 3.08  Termination of Construction  . . . . . . .   8

                                      ARTICLE IV

              ISSUANCE OF THE BONDS; THE LOANS; DISPOSITION OF PROCEEDS
                                     OF THE BONDS

               SECTION 4.01  Issuance of the Bonds  . . . . . . . . . .   9
               SECTION 4.02  Issuance of Other Obligations  . . . . . .   9
               SECTION 4.03  The Loans; Disposition of Bond Proceeds  .   9
               SECTION 4.04  Disbursements from Construction Fund . . .   9
               SECTION 4.05  Investment of Moneys in Funds and Accounts.  
                                                                         10

                                      ARTICLE V

                           LOAN PAYMENTS; OTHER OBLIGATIONS
               SECTION 5.01  Loan Payments. . . . . . . . . . . . . . .  11
               SECTION 5.02  Payments Assigned; Obligation Absolute . .  11
               SECTION 5.03  Payment of Expenses  . . . . . . . . . . .  11
               SECTION 5.04  Indemnification  . . . . . . . . . . . . .  11
               SECTION 5.05  Payment of Taxes; Discharge of Liens . . .  12

             -------------------
             *    This table of contents is not part of the Loan Agreement,
                  and is for convenience only.  The captions herein are of
                  no legal effect and do not vary the meaning or legal
                  effect of any part of the Loan Agreement.

     <PAGE> 

                                      ARTICLE VI

                                  SPECIAL COVENANTS

               SECTION 6.01  Maintenance of Corporate Existence . . . .  12
               SECTION 6.02  Permits or Licenses  . . . . . . . . . . .  13
               SECTION 6.03  Pollution Control Corporation's Access to
                            Facilities  . . . . . . . . . . . . . . . .  13
               SECTION 6.04  Tax-Exempt Status of Interest on Bonds.  .  13
               SECTION 6.05  Use of Facilities  . . . . . . . . . . . .  14
               SECTION 6.06  Financing Statements . . . . . . . . . . .  14
               SECTION 7.01  Conditions . . . . . . . . . . . . . . . .  14
               SECTION 7.02  Instrument Furnished to the Pollution
                           Control Corporation and Trustee  . . . . . .  16
               SECTION 7.03  Limitation . . . . . . . . . . . . . . . .  16

                                     ARTICLE VIII

                            EVENTS OF DEFAULT AND REMEDIES
 
              SECTION 8.01  Events of Default  . . . . . . . . . . . .  16
               SECTION 8.02  Force Majeure  . . . . . . . . . . . . . .  17
               SECTION 8.03  Remedies . . . . . . . . . . . . . . . . .  17
               SECTION 8.04  No Remedy Exclusive  . . . . . . . . . . .  18
               SECTION 8.05  Reimbursement of Attorneys' and Agents'
                             Fees . . . . . . . . . . . . . . . . . . .  18
               SECTION 8.06  Waiver of Breach . . . . . . . . . . . . .  18

                                      ARTICLE IX

                                 REDEMPTION OF BONDS

               SECTION 9.01  Redemption of Bonds  . . . . . . . . . . .  18
               SECTION 9.02  Compliance with the Indenture  . . . . . .  18

                                      ARTICLE X

                                    MISCELLANEOUS

               SECTION 10.01  Term of Agreement . . . . . . . . . . . .  19
               SECTION 10.02  Notices . . . . . . . . . . . . . . . . .  19
               SECTION 10.03  Parties in Interest . . . . . . . . . . .  19
               SECTION 10.04  Amendments  . . . . . . . . . . . . . . .  19
               SECTION 10.05  Counterparts  . . . . . . . . . . . . . .  19
               SECTION 10.06  Severability  . . . . . . . . . . . . . .  19
               SECTION 10.07  Governing Law . . . . . . . . . . . . . .  20


          Signatures  . . . . . . . . . . . . . . . . . . . . . . . . .  21
          Exhibit A - Description of the Facilities . . . . . . . . .   A-1

     <PAGE> 
                                   LOAN AGREEMENT 

             THIS LOAN AGREEMENT, dated as of April 1, 1997 (this
          "Agreement"), between COCONINO COUNTY, ARIZONA POLLUTION CONTROL
          CORPORATION, an Arizona nonprofit corporation and a political
          subdivision of the State of Arizona (hereinafter called the
          "Pollution Control Corporation"), and TUCSON ELECTRIC POWER
          COMPANY, a corporation organized and existing under the laws of
          the State of Arizona formerly known as Tucson Gas & Electric
          Company (hereinafter called the "Company"),

                                W I T N E S S E T H :

             WHEREAS, the Pollution Control Corporation is authorized and
          empowered under Title 35, Chapter 6, Arizona Revised Statutes, as
          amended (the "Act"), to issue its bonds in accordance with the
          Act and to make secured or unsecured loans for the purpose of
          financing or refinancing the acquisition, construction,
          improvement or equipping of pollution control facilities
          consisting of real and personal properties, including but not
          limited to machinery and equipment whether or not now in
          existence or under construction, which are used in whole or in
          part to control, prevent, abate, alter, dispose or store, solid
          waste, thermal, noise, atmospheric or water pollutants,
          contaminants or products therefrom, whether such facilities serve
          one or more purposes or functions in addition to controlling,
          preventing, abating, altering, disposing or storing such
          pollutants, contaminants or the products therefrom, and to charge
          and collect interest on such loans and pledge the proceeds of
          loan agreements as security for the payment of the principal of
          and interest on bonds, or designated issues of bonds, issued by
          the Pollution Control Corporation and any agreements made in
          connection therewith, whenever the Board of Directors of the
          Pollution Control Corporation finds such loans to be in
          furtherance of the purposes of the Pollution Control Corporation;


             WHEREAS, the Pollution Control Corporation has heretofore
          issued and sold $16,700,000 aggregate principal amount of its
          Pollution Control Revenue Bonds, 1996 Series A (Tucson Electric
          Power Company Project), all of which remain outstanding (the
          "1996 Bonds"), the proceeds of which were loaned to the Company
          to finance a portion of the costs of the acquisition
          construction, improvement and equipping of a portion of the
          pollution control facilities described in Exhibit A hereto (the
          "Facilities");

             WHEREAS, the Pollution Control Corporation proposes to issue
          and sell its revenue bonds for the purpose of financing a portion
          of the costs of the acquisition, construction, improvement and
          equipping of an additional portion of the Facilities and for the
          purpose of refinancing, by the payment or redemption of the 1996
          Bonds, or provision therefor, the portion of the costs of the
          acquisition, construction, improvement and equipping of the
          Facilities previously financed with the proceeds of the 1996
          Bonds; and

             NOW, THEREFORE, the parties hereto, intending to be legally
          bound hereby and in consideration of the premises, DO HEREBY
          AGREE as follows:


                                      ARTICLE I

                                     DEFINITIONS

             SECTION 1.01  Definitions.  The terms defined in this Article
          I shall for all purposes of this Agreement have the meanings
          herein specified, unless the context clearly requires otherwise: 

          Act:
             "Act" shall mean Title 35, Chapter 6, Arizona Revised
          Statutes, and all acts supplemental thereto or amendatory
          thereof.  

          Administration Expenses:

             "Administration Expenses" shall mean the reasonable expenses
          incurred by the Pollution Control Corporation with respect to
          this Agreement, the Indenture and any transaction or event
          contemplated by this Agreement or the Indenture, including the
          compensation and reimbursement of expenses and advances payable
          to the Trustee, to the paying agent, any co-paying agent and the
          registrar under the Indenture.  

          Agreement:

             "Agreement" shall mean this Loan Agreement, dated as of April
          1, 1997, between the Pollution Control Corporation and the
          Company, and any and all modifications, alterations, amendments
          and supplements hereto.

          Authorized Company Representative:

             "Authorized Company Representative" shall mean each person at
          the time designated to act on behalf of the Company by written
          certificate furnished to the Pollution Control Corporation and
          the Trustee containing the specimen signature of such person and
          signed on behalf of the Company by its President, any Vice
          President or its Treasurer, together with its Secretary or any
          Assistant Secretary.

          Bond Counsel:

             "Bond Counsel" shall mean any firm or firms of nationally
          recognized bond counsel experienced in matters pertaining to the
          validity of, and exclusion from gross income for federal tax
          purposes of interest on bonds issued by states and political
          subdivisions, selected by the Company and acceptable to the
          Pollution Control Corporation.  
          Bond Fund:

             "Bond Fund" shall mean the fund created by Section 4.01 of the
          Indenture.

          Bonds:

             "Bond" or "Bonds" shall mean the Pollution Control Revenue
          Bonds, 1997 Series A (Tucson Electric Power Company Navajo
          Project) of the Pollution Control Corporation.  

          Capital Account:

             "Capital Account" shall mean any of the accounts so named
          established under Sections 4.01 and 5.01 of the Indenture.  

          Code:

             "Code" shall mean the Internal Revenue Code of 1986 or any
          successor statute thereto.  Each reference to a section of the
          Code herein shall be deemed to include the United States Treasury
          Regulations proposed or in effect thereunder and applicable to
          the Bonds or the use of the proceeds thereof, unless the context
          clearly requires otherwise.  Reference to any particular Code
          section shall, in the event of a successor Code, be deemed to be
          a reference to the successor to such Code section.

          Company:

             "Company" shall mean Tucson Electric Power Company, a
          corporation organized and existing under the laws of the State of
          Arizona, its successors and their assigns, including, without
          limitation, any successor obligor under Section 6.01 or 7.01 to
          the extent of the obligations assumed thereunder.

          Completion Date:

             "Completion Date" shall mean the date specified in Section
          3.04 hereof.

          Construction (and other forms of the word "construct"):

             "Construction" (and other forms of the word "construct") shall
          mean, when used with respect to the Facilities, the construction
          of the Facilities and shall include, without limitation, the
          acquisition, construction, improvement and equipping of the
          Facilities, all as contemplated by the Act.

          Construction Fund:

             "Construction Fund" shall mean the fund created by Section
          5.01 of the Indenture.

          Cost of Construction:

             "Cost of Construction" shall embrace all costs paid or
          incurred by the Company with respect to the Facilities and the
          financing thereof for the payment of which the Pollution Control
          Corporation is authorized to issue bonds under the Act, and shall
          include without limitation (a) obligations paid or incurred by
          the Company for labor, materials and other expenses and to
          contractors, builders and materialmen in connection with the
          construction of the Facilities; (b) the costs paid or incurred by
          the Company for contract bonds and for insurance of all kinds
          that may be deemed by the Company to be desirable or necessary
          during the course of construction of the Facilities; (c) the
          expenses paid or incurred by the Company for test borings,
          surveys, estimates, plans and specifications, and preliminary
          investigations therefor, with respect to the Facilities and for
          supervising construction, as well as for the performance of all
          other duties required by or reasonably necessary for the proper
          construction, of the Facilities; (d) Administration Expenses paid
          or incurred prior to the Completion Date and legal, accounting,
          financial, underwriting, advertising, recording and printing
          expenses and all other fees and expenses paid or incurred by the
          Company in connection with the issuance and sale of the Bonds;
          (e) amounts in respect of interest (exclusive of accrued interest
          paid by the initial purchasers upon delivery thereof) accruing
          upon the Bonds until the Completion Date; (f) all other costs
          that the Company shall be required to pay under the terms of any
          contract or contracts for the construction of the Facilities; (g)
          any other costs or expenses paid or incurred by the Company, and
          any sums required to reimburse the Company for work done by it,
          with respect to the Facilities which are properly chargeable to
          the capital account of the Company with respect to the Facilities
          or would be so chargeable for federal income tax purposes either
          with a proper election or but for a proper election to deduct the
          same; and (h) amounts required to be paid to the United States by
          the Company (on behalf of the Pollution Control Corporation) in
          respect of the Bonds pursuant to Section 148 of the Code.  For
          purposes of the application of the proceeds of the Bonds, the
          Cost of Construction shall be deemed to include the payment or
          redemption, or provision therefor, of any obligations, other than
          the Bonds, issued to finance or refinance any of the costs listed
          above.  The Cost of Construction shall also be deemed to include
          all costs paid or incurred with respect to the Facilities by any
          Person to whom the Facilities have been leased or sold as a whole
          or in part, provided that such costs, had they been paid or
          incurred by the Company, would otherwise constitute a portion of
          the Cost of Construction.  

          Facilities:

             "Facilities" shall mean the real and personal properties,
          machinery and equipment currently existing, under construction
          and to be constructed which are described in Exhibit A hereto, as
          revised from time to time to reflect any changes therein,
          additions thereto, substitutions therefor and deletions therefrom
          permitted by the terms hereof, subject, however, to the
          provisions of Section 7.01 hereof.

          Indenture:

             "Indenture" shall mean the Indenture of Trust, dated as of
          April 1, 1997, between the Pollution Control Corporation and the
          Trustee relating to the Bonds, and any and all modifications,
          alterations, amendments and supplements thereto.  

          Investment Account:

             "Investment Account" shall mean any of the accounts so named
          established under Sections 4.01 and 5.01 of the Indenture. 

          Loan Payments:

             "Loan Payments" shall mean the payments required to be made by
          the Company pursuant to Section 5.01 hereof.  

          1954 Code:

             "1954 Code" shall mean the Internal Revenue Code of 1954, as
          amended.

          1996 Bonds:

             "1996 Bonds" shall mean the $16,700,000 aggregate principal
          amount of the Pollution Control Corporation's Pollution Control
          Revenue Bonds, 1996 Series A (Tucson Electric Power Company
          Project).

          Outstanding:

             "Outstanding", when used in reference to the Bonds, shall
          mean, as at any particular date, the aggregate of all Bonds
          authenticated and delivered under the Indenture except: 

               (a)  those canceled by the Trustee at or prior to such date
             or delivered to or acquired by the Trustee at or prior to such
             date for cancellation; 

               (b)  those deemed to be paid in accordance with Article VIII
             of the Indenture; and

               (c)  those in lieu of or in exchange or substitution for
             which other Bonds shall have been authenticated and delivered
             pursuant to the Indenture, unless proof satisfactory to the
             Trustee and the Company is presented that such Bonds are held
             by a bona fide holder in due course.

          Person:

             "Person" means (i) any corporation, limited liability company,
          partnership, joint venture, association, joint-stock company,
          business trust or unincorporated organization, in each case
          formed or organized under the laws of the United States of
          America, any state thereof or the District of Columbia, or (ii)
          the United States of America or any state thereof, or any
          political subdivision of either thereof, or any agency, authority
          or other instrumentality of any of the foregoing.  

          Plant:

             "Plant" shall mean the Navajo Generating Station, an electric
          power generating plant near Page, Arizona, in Coconino County,
          Arizona, and any additions or improvements thereto or
          replacements thereof.

          Plant Agreements:

             "Plant Agreements" shall mean all contracts relating to the
          ownership, construction and operation of the Plant, including the
          Facilities, as from time to time amended or supplemented.

          Pollution Control Corporation:

             "Pollution Control Corporation" shall mean Coconino County,
          Arizona Pollution Control Corporation, an Arizona nonprofit
          corporation and a political subdivision of the State of Arizona
          incorporated for and with the approval of the County of Coconino,
          Arizona, pursuant to the provisions of the Constitution of the
          State of Arizona and the Act, its successors and their assigns.

          Tax Agreement:

             "Tax Agreement" shall mean that tax certificate and agreement,
          dated the date of the initial authentication and delivery of the
          Bonds, between the Pollution Control Corporation and the Company,
          relating to the requirements of the Code, and any and all
          modifications, alterations, amendments and supplements thereto.

          Trustee:

             "Trustee" shall mean First Trust of New York, National
          Association, as trustee under the Indenture, its successors in
          trust and their assigns.

             SECTION 1.02  Incorporation of Certain Definitions by
          Reference.  Each capitalized term used herein and not otherwise
          defined herein shall have the meaning set forth in the Indenture.



                                      ARTICLE II

                            REPRESENTATIONS AND WARRANTIES

             SECTION 2.01  Representations and Warranties of the Pollution
          Control Corporation.  The Pollution Control Corporation makes the
          following representations and warranties as the basis for the
          undertakings on the part of the Company contained herein:

               (a)  The Pollution Control Corporation is an Arizona
             nonprofit corporation and a political subdivision of the State
             of Arizona created and existing under the Constitution and
             laws of the State of Arizona; 

               (b)   The Pollution Control Corporation has the power to
             enter into this Agreement and the Indenture and to perform and
             observe the agreements and covenants on its part contained
             herein and therein, including without limitation the power to
             issue and sell the Bonds as contemplated herein and in the
             Indenture, and by proper action has duly authorized the
             execution and delivery hereof and thereof;

               (c)  The execution and delivery of this Agreement and the
             Indenture by the Pollution Control Corporation do not, and
             consummation of the transactions contemplated hereby and
             fulfillment of the terms hereof and thereof by the Pollution
             Control Corporation will not, result in a breach of any of the
             terms or provisions of, or constitute a default under, any
             indenture, mortgage, deed of trust or other agreement or
             instrument to which the Pollution Control Corporation is now a
             party or by which it is now bound, or any order, rule or
             regulation applicable to the Pollution Control Corporation of
             any court or of any regulatory body or administrative agency
             or other governmental body having jurisdiction over the
             Pollution Control Corporation or over any of its properties,
             or the Constitution or laws of the State of Arizona;

               (d)  No consent, approval, authorization or other order of
             any regulatory body or administrative agency or other
             governmental body is legally required for the Pollution
             Control Corporation's participation in the transactions
             contemplated by this Agreement, except such as may have been
             obtained or may be required under the securities laws of any
             jurisdiction; and

               (e)  The Pollution Control Corporation has found and
             determined that all requirements of the Act with respect to
             the issuance of the Bonds and the execution and delivery of
             the Indenture and this Agreement have been complied with and
             that the financing and refinancing of the Cost of Construction
             of the Facilities by issuing the Bonds and entering into the
             Indenture and this Agreement will be in furtherance of the
             purposes of the Act.

             SECTION 2.02  Representations and Warranties of the Company. 
          The Company makes the following representations and warranties as
          the basis for the undertakings on the part of the Pollution
          Control Corporation contained herein:

               (a)  The Company is a corporation duly organized and
             existing in good standing under the laws of the State of
             Arizona and duly qualified as a foreign corporation in the
             State of New Mexico; 

               (b)  The Company has power to enter into this Agreement and
             to perform and observe the agreements and covenants on its
             part contained herein and by proper corporate action has duly
             authorized the execution and delivery hereof; 

               (c)  The execution and delivery of this Agreement by the
             Company do not, and consummation of transactions contemplated
             hereby and fulfillment of the terms hereof by the Company will
             not, result in a breach of any of the terms or provisions of,
             or constitute a default under, any indenture, mortgage, deed
             of trust or other agreement or instrument to which the Company
             is a party or by which it is now bound, or the Restated
             Articles of Incorporation or by-laws of the Company, or any
             order, rule or regulation applicable to the Company of any
             court or of any regulatory body or administrative agency or
             other governmental body having jurisdiction over the Company
             or over any of its properties, or any statute of any
             jurisdiction applicable to the Company; 

               (d)  The Arizona Corporation Commission has approved all
             matters relating to the Company's participation in the
             transactions contemplated by this Agreement which require said
             approval, and no other consent, approval, authorization or
             other order of any regulatory body or administrative agency or
             other governmental body is legally required for the Company's
             participation therein, except such as may have been obtained
             or may be required under the securities laws of any
             jurisdiction;

               (e)  The Facilities to be financed and refinanced shall
             constitute "pollution control facilities" as such term is
             defined in the Act; and

               (f)  The Company estimates that all of the proceeds of the
             Bonds (exclusive of accrued interest, if any, paid by the
             initial purchasers of such Bonds upon delivery thereof) will
             be expended to pay the Cost of Construction.

                                     ARTICLE III

                                    THE FACILITIES

             SECTION 3.01  Construction of the Facilities.  The Company
          shall exercise all of its rights, powers, elections and options
          under the Plant Agreements to cause the Facilities to be
          constructed with all reasonable dispatch in order to effectuate
          the purposes of the Act.  The Company shall have the sole
          responsibility under this Agreement for the construction of the
          Facilities and may perform the same itself or through its agents,
          and may make or issue such contracts, orders, receipts and
          instructions, and in general do or cause to be done all such
          other things as it may in its sole discretion consider requisite
          or advisable for the construction of the Facilities and for
          fulfilling its obligations under this Article III.  The Company
          shall have full authority and the sole right under this Agreement
          to supervise and control, directly or indirectly, all aspects of
          the construction of the Facilities.  The Pollution Control
          Corporation shall have no right, title or interest in the
          Facilities.  

             SECTION 3.02  Insufficient Moneys in Construction Fund.  If
          the moneys in the Construction Fund, together with any other
          moneys made available to pay the Cost of Construction, shall not
          be sufficient to pay the Cost of Construction in full, then the
          Company shall pay all that portion of the Cost of Construction in
          excess of the moneys available therefor.

             The Pollution Control Corporation does not make any warranty,
          either express or implied, that the moneys which will be paid
          into the Construction Fund will be sufficient to pay the Cost of
          Construction in full.  

             If the Company makes any payments pursuant to this Section
          3.02, it shall not be entitled to any reimbursement therefor from
          the Pollution Control Corporation (except from the proceeds of
          any obligations subsequently issued by the Pollution Control
          Corporation in respect of the Facilities), the Trustee or the
          Owners of the Bonds, nor shall it be entitled to any diminution
          in or postponement of the payment of the Loan Payments or the
          payment of any other amounts payable under this Agreement.  

             SECTION 3.03  Revision of Plans and Specifications.  The
          Company may consent to one or more revisions to the plans and
          specifications for the Facilities (including without limitation
          any changes therein, additions thereto, substitutions therefor
          and deletions therefrom), at any time and from time to time prior
          to the Completion Date in any respect; provided, however, that,
          if any such revision shall render inaccurate the description of
          the Facilities contained in Exhibit A hereto, the Company shall
          deliver to the Pollution Control Corporation and the Trustee (a)
          a revised Exhibit A containing a description of the Facilities as
          revised, the accuracy of which shall have been certified by an
          Authorized Company Representative, and (b) an opinion of Bond
          Counsel to the effect that the Facilities as described in the
          revised Exhibit A are such that the expenditure of the proceeds
          of the Bonds pursuant to this Agreement will not, in and of
          itself, impair the validity of the Bonds under the Act or the
          exclusion from gross income for federal tax purposes of interest
          on the Bonds.  A revision of Exhibit A hereto pursuant to this
          Section 3.03 shall not constitute an amendment, change or
          modification of this Agreement within the meaning of Article XII
          of the Indenture.

             SECTION 3.04  Certification of Completion Date.  The
          Completion Date shall be the date on which the Facilities are
          completed in their entirety and ready to be placed in service and
          operated, all as determined by the Company.  Promptly after the
          Completion Date, the Company shall submit to the Pollution
          Control Corporation and the Trustee a certificate, executed by an
          Authorized Company Representative, which shall specify the
          Completion Date and shall state that (a) construction of the
          Facilities has been completed and the Cost of Construction has
          been paid, except for any portion thereof which has been incurred
          but is not then due and payable, or the liability for the payment
          of which is being contested or disputed by the Company, and for
          the payment of which the Trustee is directed to retain specified
          amounts of moneys in specified accounts within the Construction
          Fund, and (b) the Facilities are suitable for operation for the
          purposes for which they were designed.  Notwithstanding the
          foregoing, such certificate may state that it is given without
          prejudice to any rights against third parties which exist at the
          date thereof or which may subsequently come into being.  

             SECTION 3.05  Maintenance of Facilities; Remodeling.  The
          Company shall at all times exercise all of its rights, powers,
          elections and options under the Plant Agreements to cause the
          Facilities, and every element and unit thereof, to be maintained,
          preserved and kept in thorough repair, working order and
          condition and to cause all needful and proper repairs and
          renewals thereto to be made; provided, however, that the Company
          may exercise all of its rights, powers, elections and options
          under the Plant Agreements to cause the operation of the
          Facilities, or any element or unit thereof, to be discontinued
          if, in the judgment of the Company, it is no longer advisable to
          operate the same, or if the Company intends to sell or dispose of
          the same and within a reasonable time shall endeavor to
          effectuate such sale or disposition.

             After the Completion Date, the Company may, subject to the
          provisions of Section 6.05 hereof, at its own expense consent to
          the remodeling of the Facilities or to the making of such
          substitutions, modifications and improvements to the Facilities
          from time to time as it, in its discretion, may deem to be
          desirable for its uses and purposes, which remodeling,
          substitutions, modifications and improvements shall be included
          under the terms of this Agreement as part of the Facilities.  

             SECTION 3.06  Insurance.  The Company shall exercise all of
          its rights, powers, elections and options under the Plant
          Agreements to keep the Facilities insured against fire and other
          risks to the extent usually insured against by companies owning
          and operating similar property, by reputable insurance companies
          or, at the Company's election, with respect to all or any element
          or unit of the Facilities, by means of an adequate insurance fund
          set aside and maintained by it out of its own earnings or in
          conjunction with other companies through an insurance fund, trust
          or other agreement or, by means of unfunded self-insurance as may
          be reasonable and customary by companies owning and operating
          similar property.  All proceeds of such insurance shall be for
          the account of the Company.  

             SECTION 3.07  Condemnation.  The Company shall be entitled to
          the entire proceeds of any condemnation award or portion thereof
          made for damages to or takings of the Facilities or other
          property of the Company.  

             SECTION 3.08  Termination of Construction.   (a)  Anything in
          this Agreement to the contrary notwithstanding, the Company shall
          have the right at any time to exercise all of its rights, powers,
          elections and options under the Plant Agreements to terminate the
          construction of the Facilities, in whole, if the Company shall
          have determined that the continued construction or operation of
          the Facilities, in whole, is impracticable, uneconomical or
          undesirable for any reason.

             (b)  Promptly after the termination of the construction of the
          Facilities, the Company shall submit to the Pollution Control
          Corporation and the Trustee a certificate, executed by an
          Authorized Company Representative, which shall state the reasons
          for such termination and shall state that the Cost of
          Construction, to the extent of the construction of the Facilities
          as of the date of such termination, has been paid, except for any
          Costs of Construction which have been incurred but are not then
          due and payable, or the liability for the payment of which is
          being contested or disputed by the Company, and for the payment
          of which the Trustee is directed to retain specified amounts of
          moneys in specified accounts within the Construction Fund. 
          Notwithstanding the foregoing, such certificate may state that it
          is given without prejudice to any rights against third parties
          which exist at the date thereof or which may subsequently come
          into being.  


                                      ARTICLE IV

              ISSUANCE OF THE BONDS; THE LOANS; DISPOSITION OF PROCEEDS
                                     OF THE BONDS

             SECTION 4.01  Issuance of the Bonds.  The Pollution Control
          Corporation shall issue the Bonds under and in accordance with
          the Indenture, subject to the provisions of the bond purchase
          agreement among the Pollution Control Corporation, the initial
          purchaser or purchasers of the Bonds and the Company.  The
          Company hereby approves the issuance of the Bonds and all terms
          and conditions thereof.  

             SECTION 4.02  Issuance of Other Obligations.  The Pollution
          Control Corporation and the Company expressly reserve the right
          to enter into, to the extent permitted by law, but shall not be
          obligated to enter into, an agreement or agreements other than
          this Agreement with respect to the issuance by the Pollution
          Control Corporation, under an indenture or indentures other than
          the Indenture, of obligations to provide additional funds to pay
          the Cost of Construction of the Facilities or obligations to
          refund all or any principal amount of the Bonds, or any
          combination thereof.  

             SECTION 4.03  The Loans; Disposition of Bond Proceeds.  The
          Pollution Control Corporation and the Company shall enter into
          escrow arrangements with the trustee for the 1996 Bonds and shall
          cause $16,700,000 of the proceeds of the Bonds to be deposited in
          escrow with such trustee to be applied to the payment of the 1996
          Bonds upon the redemption thereof.  The Pollution Control
          Corporation shall from time to time lend to the Company the
          remaining proceeds of the issuance and sale of the Bonds, other
          than accrued interest, if any, paid by the initial purchaser or
          purchasers thereof, for the purposes specified in this Agreement,
          such proceeds to be applied as hereinafter and in the Indenture
          provided.

             The Pollution Control Corporation shall establish the Bond
          Fund and the Construction Fund with the Trustee in accordance
          with Sections 4.01 and 5.01 of the Indenture.  The proceeds of
          the issuance and sale of the Bonds, other than the $16,700,000
          deposited in escrow with the trustee for the 1996 Bonds as
          hereinabove provided and accrued interest, if any, paid by the
          initial purchaser or purchasers thereof, shall be deposited into
          the Construction Fund, and any such accrued interest shall be
          deposited into the Bond Fund, all in accordance with the
          provisions of the Indenture.  

             The moneys on deposit in the Construction Fund shall be
          applied by the Trustee as provided in Section 4.04 hereof and as
          otherwise provided in Article V of the Indenture.  Until the
          moneys on deposit in the Construction Fund are so applied, such
          moneys shall be and remain the property of the Pollution Control
          Corporation, subject to the lien of the Indenture, and the
          Company shall have no right, title or interest therein except as
          expressly provided in this Agreement and the Indenture.  However,
          in order to secure the payment by the Company of the Loan
          Payments, and the payment by the Pollution Control Corporation of
          the principal of and premium, if any, and interest on the Bonds,
          and the performance and observance by the Company and the
          Pollution Control Corporation of all covenants and conditions
          expressed herein and in the Indenture and contained in the Bonds,
          the Company hereby mortgages, pledges, assigns, creates and
          grants a security interest in and confirms to the Trustee such
          right, title and interest as the Company may be deemed to have or
          hereafter acquire in the proceeds of the issuance and sale of the
          Bonds to be deposited into the Construction Fund and the proceeds
          from the investment and reinvestment thereof, upon terms and
          conditions co-extensive with those set forth in the Indenture
          with respect to the lien and security interest of the Trustee in
          the Trust Estate (as defined in the Indenture). 

             SECTION 4.04  Disbursements from Construction Fund.  (a)  To
          the extent that moneys on deposit in the Construction Fund shall
          not otherwise have been applied in accordance with the provisions
          of Article V of the Indenture, such moneys shall be loaned to the
          Company from time to time to reimburse the Company for portions
          of the Cost of Construction paid by it or to make payments to
          persons designated by the Company in respect of portions of the
          Cost of Construction, upon receipt by the Trustee of requisitions
          executed by, or communications by telegram, telex or facsimile
          transmission from, an Authorized Company Representative, which
          requisitions or communications shall state with respect to each
          payment to be made: (i) the requisition number, (ii) the name and
          address of the person, firm or corporation to whom payment is due
          or has been made (or, in the case of payments to the Bond Fund,
          instructions to make such payments thereto), (iii) the amount
          paid or to be paid, (iv) the account or accounts within the
          Construction Fund from which payment of such requisition, or any
          portion thereof, shall be made, (v) (A) that each obligation,
          item of cost or expense with respect to which such requisition is
          being made has been properly incurred and has been paid or is
          then due and payable as an item of the Cost of Construction, is a
          proper charge against the Construction Fund, and has not been the
          basis of any previous final payment therefrom or from the
          proceeds of any other obligations issued by the Pollution Control
          Corporation or (B) in the event that a portion of the Bonds shall
          have been paid, redeemed or deemed to have been paid within the
          meaning of Article VIII of the Indenture by reason of the
          application of the proceeds of the sale of any obligations issued
          under an indenture other than the Indenture and if the payment of
          such requisition is to be made into the construction, acquisition
          or other similar fund created under such other indenture, that
          upon disbursement from such construction, acquisition or other
          similar fund, each obligation, item of cost or expense mentioned
          in the requisition for such disbursement will have been properly
          incurred and will have been paid or will then be due and payable
          as an item of the Cost of Construction, will be a proper charge
          against the construction, acquisition or other similar fund under
          such indenture, and will not have been the basis of any previous
          final payment therefrom or from the proceeds of any other revenue
          bonds issued by the Pollution Control Corporation, (vi) that the
          payment of such requisition will not result in a breach of any of
          the covenants of the Company contained in subsection (c) or (d)
          of this Section 4.04 and (vii) that, to the best of the knowledge
          of such Authorized Company Representative, there shall not have
          occurred and be continuing any Event of Default described in
          Section 8.01 hereof.  Any such communication by telegram, telex
          or facsimile transmission shall be promptly confirmed by a
          requisition executed by an Authorized Company Representative. 
          The Company shall furnish to the Pollution Control Corporation a
          copy of each requisition delivered to the Trustee promptly upon
          request therefor.

             (b)  In paying any requisition under this Section 4.04, the
          Trustee shall be entitled to conclusively rely as to the
          completeness and accuracy of all statements in such requisition
          upon the approval of such requisition by an Authorized Company
          Representative, execution thereof to be conclusive evidence of
          such approval, and the Company shall indemnify and save harmless
          the Pollution Control Corporation and the Trustee from any
          liability incurred in connection with any requisition so executed
          by an Authorized Company Representative.

             (c)  The Company shall not submit requisitions for Costs of
          Construction which, on a cumulative aggregate basis, if paid,
          would result in less than 97% of the sum of the total amount of
          the proceeds of the Bonds expended, for any purpose, being used
          to provide air or water pollution control or sewage or solid
          waste disposal facilities or other exempt facilities, including
          facilities functionally related or subordinate thereto, within
          the meaning of Section 141 of the Code or Section 103(b)(4) of
          the 1954 Code, as applicable; provided, however, that the moneys
          paid from the Investment Account within the Construction Fund
          shall be disregarded for purposes of the foregoing covenant and
          all computations made in accordance therewith if the Company
          shall have furnished to the Pollution Control Corporation and the
          Trustee an opinion of Bond Counsel to the effect that such moneys
          may be so disregarded without impairing the exclusion from gross
          income for federal tax purposes of interest on the Bonds.

               (d)  The Company shall not submit or cause to be submitted
          to the Trustee any requisition pursuant to this Section 4.04, and
          shall have no claim upon any moneys in the Construction Fund, so
          long as there shall have occurred and be continuing any Event of
          Default described in Section 8.01 hereof.


             SECTION 4.05  Investment of Moneys in Funds and Accounts. The
          Company and the Pollution Control Corporation agree that any
          moneys held in any fund or account created by the Indenture shall
          be invested as provided in the Indenture.


                                      ARTICLE V

                           LOAN PAYMENTS; OTHER OBLIGATIONS

             SECTION 5.01  Loan Payments.  In consideration of the issuance
          of the Bonds and the disposition of the proceeds thereof as
          contemplated in Section 4.03 hereof, the Company shall pay, or
          cause to be paid, to the Trustee for the account of the Pollution
          Control Corporation an amount equal to the aggregate principal
          amount of the Bonds from time to time Outstanding and, as
          interest on its obligation to pay such amount, an amount equal to
          premium, if any, and interest on such Bonds, such amounts to be
          paid in installments due on the dates, in the amounts and in the
          manner provided in the Indenture for the Pollution Control
          Corporation to cause amounts to be deposited in the Bond Fund for
          the payment of the principal of and premium, if any, and interest
          on the Bonds whether at stated maturity, upon redemption or
          acceleration or otherwise; provided, however, that the obligation
          of the Company to make any such payment hereunder shall be
          reduced by the amount of any reduction under the Indenture of the
          amount of the corresponding payment required to be made by the
          Pollution Control Corporation thereunder.

             SECTION 5.02  Payments Assigned; Obligation Absolute.  It is
          understood and agreed that all Loan Payments are, by the
          Indenture, to be pledged by the Pollution Control Corporation to
          the Trustee, and that all rights and interest of the Pollution
          Control Corporation hereunder (except for the Pollution Control
          Corporation's rights under Sections 5.03, 5.04, 6.03 and 8.05
          hereof and any rights of the Pollution Control Corporation to
          receive notices, certificates, requests, requisitions and other
          communications hereunder) are to be pledged and assigned to the
          Trustee.  The Company assents to such pledge and assignment and
          agrees that the obligation of the Company to make the Loan
          Payments shall be absolute, irrevocable and unconditional and
          shall not be subject to cancellation, termination or abatement,
          or to any defense other than payment or to any right of set-off,
          counterclaim or recoupment arising out of any breach by the
          Pollution Control Corporation or the Trustee or any other party
          under this Agreement, the Indenture or otherwise, or out of any
          obligation or liability at any time owing to the Company by the
          Pollution Control Corporation, the Trustee or any other party,
          and, further, that the Loan Payments and the other payments due
          hereunder shall continue to be payable at the times and in the
          amounts herein and therein specified, whether or not the
          Facilities, or any portion thereof, shall have been completed or
          shall have been destroyed by fire or other casualty, or title
          thereto, or the use thereof, shall have been taken by the
          exercise of the power of eminent domain, and that there shall be
          no abatement of or diminution in any such payments by reason
          thereof, whether or not the Facilities shall be used or useful,
          whether or not any applicable laws, regulations or standards
          shall prevent or prohibit the use of the Facilities, or for any
          other reason, all of the foregoing being subject, however, to the
          provisions of Sections 6.01 and 7.01 hereof.

             SECTION 5.03  Payment of Expenses.  The Company shall pay, or,
          to the extent permitted by this Agreement, cause to be paid out
          of the Construction Fund, all Administration Expenses, including,
          without limitation, Administration Expenses incurred at and
          subsequent to the time the Bonds are deemed to have been paid in
          accordance with Article VIII of the Indenture.  The payment of
          the compensation and the reimbursement of expenses and advances
          of the Trustee, of the paying agent, any co-paying agent and the
          registrar under the Indenture shall be made directly to such
          entities.  

             SECTION 5.04  Indemnification.  The Company releases the
          Pollution Control Corporation and the Trustee and their
          directors, officers, employees and agents from, agrees that the
          Pollution Control Corporation and the Trustee shall not be liable
          for, and agrees to indemnify and hold the Pollution Control
          Corporation, the Trustee and any predecessor Trustee and their
          directors, officers, employees and agents free and harmless from,
          any liability (including, without limitation, attorneys' and
          other agents' fees and expenses) for any loss or damage to
          property or any injury to or death of any person that may be
          occasioned by any cause whatsoever pertaining to the Facilities,
          except in any case as a result of the negligence or bad faith or
          willful misconduct of the party otherwise to be indemnified.  

             The Company will indemnify and hold the Pollution Control
          Corporation, the Trustee and any predecessor Trustee, free and
          harmless from any loss, claim, damage, tax, penalty, liability,
          disbursement, litigation expenses, attorneys' and other agents'
          fees and expenses or court costs arising out of, or in any way
          relating to, the execution or performance of this Agreement, the
          issuance or sale of the Bonds, actions taken under the Indenture
          or any other cause whatsoever pertaining to the Facilities,
          except in any case as a result of the negligence or bad faith or
          willful misconduct of the party otherwise to be indemnified.  

             The Company will indemnify and hold the Pollution Control
          Corporation and its directors, officers, employees and agents
          free and harmless from any loss, claim, damage, tax, penalty,
          liability, disbursement, litigation expenses, attorney's fees and
          expenses or court costs arising out of or in any way relating to
          any untrue statements or alleged untrue statement of any material
          fact or omission or alleged omission to state a material fact
          necessary to make the statements made, in light of the
          circumstances under which they were made, not misleading in any
          official statement or other offering material utilized in
          connection with the sale of any Bonds.

             SECTION 5.05  Payment of Taxes; Discharge of Liens.  The
          Company shall: (a) pay, or make provision for payment of, all
          lawful taxes and assessments, including income, profits, property
          or excise taxes, if any, or other municipal or governmental
          charges, levied or assessed by any federal, state or municipal
          government or political body upon the Facilities or any part
          thereof or upon the Pollution Control Corporation with respect to
          the Loan Payments, when the same shall become due; and (b) pay or
          cause to be satisfied and discharged or make adequate provision
          to satisfy and discharge, within sixty (60) days after the same
          shall accrue, any lien or charge upon the Loan Payments, and all
          lawful claims or demands for labor, materials, supplies or other
          charges which, if unpaid, might be or become a lien upon such
          amounts; provided, that, if the Company shall first notify the
          Pollution Control Corporation and the Trustee of its intention so
          to do, the Company may in good faith contest any such lien or
          charge or claims or demands in appropriate legal proceedings, and
          in such event may permit the items so contested and identified as
          such by the Company to remain undischarged and unsatisfied during
          the period of such contest and any appeal therefrom, unless the
          Trustee shall notify the Company in writing that, in the opinion
          of counsel to the Trustee based upon material facts disclosed to
          the Trustee without any duty of investigation, by nonpayment of
          any such items the lien of the Indenture as to the Loan Payments
          will be materially endangered, in which event the Company shall
          promptly pay and cause to be satisfied and discharged all such
          unpaid items.  The Pollution Control Corporation shall cooperate
          fully with the Company in any such contest.


                                      ARTICLE VI

                                  SPECIAL COVENANTS

             SECTION 6.01  Maintenance of Corporate Existence.  Except as
          permitted in this Section 6.01, the Company shall maintain its
          corporate existence, shall not sell, transfer or otherwise
          dispose of all of its assets, as or substantially as an entirety,
          and shall not consolidate with or merge with or into another
          corporation.  The Company may consolidate with or merge into
          another corporation incorporated under the laws of the United
          States of America, any state thereof or the District of Columbia,
          or sell, transfer or otherwise dispose of all of its assets, as
          or substantially as an entirety, to any Person, if the surviving
          or resulting corporation (if other than the Company) or the
          transferee Person, as the case may be, prior to or simultaneously
          with such merger, consolidation, sale, transfer or disposition,
          assumes, by delivery to the Trustee and the Pollution Control
          Corporation of an instrument in writing satisfactory in form to
          the Trustee, all the obligations of the Company under this
          Agreement, including, without limitation, obligations of the
          Company under Section 5.01 hereof. Upon such an assumption
          following any such sale, transfer or other disposition of assets,
          the Company shall be released and discharged from all liability
          in respect of all obligations under this Agreement. 
          Notwithstanding the foregoing, in the case of any such sale,
          transfer or other disposition of assets, which do not include the
          Facilities, the Company shall remain liable in respect of
          obligations under this Agreement other than the obligations under
          Section 5.01 hereof, and the transferee shall not be required to
          assume any obligations hereunder other than the obligations under
          Section 5.01 hereof; provided, however, that the transferee shall
          be required to assume all such other obligations unless the
          Company shall have delivered to the Pollution Control Corporation
          and the Trustee an opinion of Bond Counsel to the effect that the
          non-assumption by the transferee of such other obligations will
          not impair the validity under the Act of the Bonds and will not
          adversely affect the exclusion from gross income for federal tax
          purposes of interest on the Bonds.

             If consolidation, merger or sale, transfer or other
          disposition is made as permitted by this Section 6.01, the
          provisions of this Section 6.01 shall continue in full force and
          effect and no further consolidation, merger or sale or other
          transfer shall be made except in compliance with the provisions
          of this Section 6.01.

             Anything in this Agreement to the contrary notwithstanding,
          the sale, transfer or other disposition by the Company of all of
          its facilities (a) for the generation of electric energy, (b) for
          the transmission of electric energy or (c) for the distribution
          of electric energy, in each case considered alone, or all of its
          facilities described in clauses (a) and (b), considered together,
          or all of its facilities described in clauses (b) and (c),
          considered together, shall in no event be deemed to constitute a
          sale, transfer or disposition of all the properties of the
          Company, as or substantially as an entirety, unless, immediately
          following such sale, transfer or other disposition, the Company
          shall own no properties in the other such categories of property
          not so sold, transferred or otherwise disposed of.  The character
          of particular facilities shall be determined by reference to the
          Uniform System of Accounts prescribed for public utilities and
          licensees subject to the Federal Power Act, as amended, to the
          extent applicable.

             SECTION 6.02  Permits or Licenses.  In the event that it may
          be necessary for the proper performance of this Agreement on the
          part of the Company or the Pollution Control Corporation that any
          application or applications for any permit or license to do or to
          perform certain things be made to any governmental or other
          agency by the Company or the Pollution Control Corporation, the
          Company and the Pollution Control Corporation each shall, upon
          the request of either, execute such application or applications. 


             SECTION 6.03  Pollution Control Corporation's Access to
          Facilities.  The Pollution Control Corporation shall have the
          right, upon appropriate prior notice to the Company, to have
          reasonable access to the Facilities during normal business hours
          for the purpose of making examinations and inspections of the
          same.  

             SECTION 6.04  Tax-Exempt Status of Interest on Bonds.  (a)  It
          is the intention of the parties hereto that interest on the Bonds
          shall be and remain tax-exempt, and to that end the covenants and
          agreements of the Pollution Control Corporation and the Company
          in this Section 6.04 and the Tax Agreement are for the benefit of
          the Owners from time to time of the Bonds.

               (b)  Each of the Company and the Pollution Control
          Corporation covenants and agrees for the benefit of the Owners
          from time to time of the Bonds that it will not directly or
          indirectly use or permit the use of (to the extent within its
          control) the proceeds of any of the Bonds or any other funds, or
          take or omit to take any action, if and to the extent such use,
          or the taking or omission to take such action, would cause any of
          the Bonds to be "arbitrage bonds" within the meaning of Section
          148 of the Code or otherwise subject to federal income taxation
          by reason of Section 103 and 141 through 150 of the Code or
          Section 103 of the 1954 Code and Title XIII of the Tax Reform Act
          of 1986, as applicable, and any applicable regulations
          promulgated thereunder.  To such ends, the Pollution Control
          Corporation and the Company will comply with all requirements of
          such Section 148 to the extent applicable to the Bonds.  In the
          event that at any time the Pollution Control Corporation or the
          Company is of the opinion that for purposes of this Section
          6.04(b) it is necessary to restrict or limit the yield on the
          investment of any moneys held by the Trustee under the Indenture,
          the Pollution Control Corporation or the Company shall so notify
          the Trustee in writing.

               Without limiting the generality of the foregoing, the
          Company and the Pollution Control Corporation agree that there
          shall be paid from time to time all amounts required to be
          rebated to the United States of America pursuant to Section
          148(f) of the Code and any applicable Treasury Regulations.  This
          covenant shall survive payment in full or defeasance of the Bonds
          and the satisfaction and discharge of the Indenture.  The Company
          specifically covenants to pay or cause to be paid, the Rebate
          Requirement as defined and described in the Tax Agreement.

               (c)  The Pollution Control Corporation certifies and
          represents that it has not taken, and the Pollution Control
          Corporation covenants and agrees that it will not take, any
          action which results in interest paid on the Bonds being included
          in gross income of the Owners of the Bonds for federal tax
          purposes pursuant to Sections 103 and 141 of the Code or to
          Section 103 of the 1954 Code and Title XIII of the Tax Reform Act
          of 1986, as applicable, and any regulations thereunder; and the
          Company certifies and represents that it has not taken or (to the
          extent within its control) permitted to be taken, and the Company
          covenants and agrees that it will not take or (to the extent
          within its control) permit to be taken any action which will
          cause the interest on the Bonds to become includable in gross
          income for federal income tax purposes; provided, however, that
          neither the Company nor the Pollution Control Corporation shall
          be deemed to have violated these covenants if the interest on any
          of the Bonds becomes taxable to a person solely because such
          person is a "substantial user" of the Facilities or a "related
          person" within the meaning of Section 103(b)(13) of the 1954
          Code; and provided, further, that none of the covenants and
          agreements herein contained shall require either the Company or
          the Pollution Control Corporation to enter an appearance or
          intervene in any administrative, legislative or judicial
          proceeding in connection with any changes in applicable laws,
          rules or regulations or in connection with any decisions of any
          court or administrative agency or other governmental body
          affecting the taxation of interest on the Bonds.  The Company
          acknowledges having read Section 7.08 of the Indenture and agrees
          to perform all duties imposed on it by such Section 7.08, by this
          Section and by the Tax Agreement.  Insofar as Section 7.08 of the
          Indenture and the Tax Agreement impose duties and
          responsibilities on the Company, they are specifically
          incorporated herein by reference.

               (d)  Notwithstanding any provision of this Section 6.04 and
          Section 7.08 of the Indenture, if the Company shall provide to
          the Pollution Control Corporation and the Trustee an opinion of
          Bond Counsel to the effect that any specified action required
          under this Section 6.04 and Section 7.08 of the Indenture is no
          longer required or that some further or different action is
          required to maintain the tax-exempt status of interest on the
          Bonds, the Company, the Trustee and the Pollution Control
          Corporation may conclusively rely upon such opinion in complying
          with the requirements of this Section 6.04, and the covenants
          hereunder shall be deemed to be modified to that extent.

             SECTION 6.05  Use of Facilities.  So long as any Bonds are
          Outstanding and the Facilities are operated by or for the benefit
          of the Company, the Company shall exercise all of its rights,
          powers, elections and options under the Plant Agreements to cause
          the Facilities to be used for purposes contemplated by the Act
          and in the Tax Agreement.

             SECTION 6.06  Financing Statements.  The Company shall file
          and record, or cause to be filed and recorded, all financing
          statements and continuation statements referred to in Section
          7.07 of the Indenture.


                                     ARTICLE VII

                           ASSIGNMENT, LEASING AND SELLING

             SECTION 7.01  Conditions. The Company's interest in this
          Agreement may be assigned as a whole or in part, and its interest
          in the Facilities may be leased, sold, transferred or otherwise
          disposed of by the Company as a whole or in part (whether an
          interest in a specific element or unit or an undivided interest),
          to any Person; provided, however, that no such assignment, lease,
          sale, transfer or other disposition (a) shall relieve the Company
          from its primary liability for its obligations under Section 5.01
          hereof or (b) shall be made unless the assignee, lessee,
          purchaser or other transferee, as the case may be, prior to or
          simultaneously with such assignment, lease, sale, transfer or
          other disposition, assumes, by delivery of an instrument in
          writing satisfactory in form to the Trustee and the Pollution
          Control Corporation, all other obligations of the Company
          hereunder to the extent of the interest assigned, leased, sold,
          transferred or otherwise disposed of, and the Company shall be
          released of and discharged from such obligations to the extent so
          assumed.  Notwithstanding the foregoing, (a) if (i) the Company's
          interest in this Agreement shall be assigned as a whole or in
          undivided part, (ii) the Company's interest in the Facilities
          shall be leased as a whole or in undivided part and the term of
          such leasehold or the term of any extension or extensions thereof
          at the option of the Company shall extend beyond the maturity
          date of the Bonds or (iii) the Company's interest in the
          Facilities shall be sold, transferred or otherwise disposed of as
          a whole or in undivided part, and (b) in the event that the
          assignee, lessee, purchaser or other transferee shall assume the
          obligations of the Company under Section 5.01 hereof for the
          remaining term of this Agreement, to the extent of such
          assignment, lease, sale, transfer or other disposition, the
          Company shall be released from and discharged of all liability in
          respect of such obligations to the extent so assumed (but only to
          such extent); provided, however, that the release and discharge
          of the Company pursuant to clause (b) shall be conditioned upon
          the delivery by the Company to the Pollution Control Corporation
          and the Trustee of a certificate of an Independent Expert (as
          hereinafter defined) describing the interests so assigned,
          leased, sold, transferred or otherwise disposed of, together with
          all other rights, interests, assets and/or properties assigned,
          leased, sold, transferred or otherwise disposed of by the Company
          to the same Person in the same or a related transaction, stating
          that such rights, interests, assets and/or properties so
          described constitute facilities for the generation, transmission 
          and/or distribution of electric energy and stating that, in the
          opinion of such Independent Expert, the Fair Value (as
          hereinafter defined) of such rights, interests, assets and/or
          properties to the Person acquiring the same is not less than an
          amount equal to 10/7 of the sum of (x) the aggregate principal
          amount of the Bonds then Outstanding and (y) the outstanding
          principal amount of all other obligations of the Company
          representing indebtedness for borrowed money or for the deferred
          purchase price of property which are being assumed by such
          Person; provided, further, that after any such assumption,
          release and discharge as aforesaid, the Company may again assume
          such obligations under Section 5.01 hereof, in whole or in part,
          at any time and from time to time, and, to the extent of any such
          assumption by the Company (but only to such extent), the
          aforesaid assignee, lessee, purchaser or other transferee shall
          be released from and discharged of all liability in respect of
          such obligations.

             Anything herein to the contrary notwithstanding, the Company
          shall not make any assignment, lease or sale as provided in the
          immediately preceding paragraph unless it shall have furnished to
          the Pollution Control Corporation and the Trustee an opinion of
          Bond Counsel to the effect that the proposed assignment, lease or
          sale will not impair the validity under the Act of the Bonds and
          will not adversely affect the exclusion of interest on the Bonds
          from gross income for federal tax purposes.

             After any lease, sale, transfer or other disposition of any
          element or unit of the Facilities, or any interest therein, the
          Company may, at its option, cause such element or unit, or
          interest therein, to no longer be deemed to be part of the
          Facilities for the purposes of this Agreement by delivering to
          the Pollution Control Corporation and the Trustee the agreements
          or other documents required pursuant to Section 7.02 hereof
          together with an instrument signed by an Authorized Company
          Representative stating that such element or unit, or interest
          therein, shall no longer be deemed to be part of the Facilities
          for the purposes of this Agreement.  

             For purposes of this Section 701:

               (a)  "Independent Expert" means a Person which (i) is an
             engineer, appraiser or other expert and which, with respect to
             any certificate to be delivered pursuant to this Section, is
             qualified to pass upon the matter set forth in such
             certificate and (ii)(A) is in fact independent, (B) does not
             have any direct material financial interest in the transferee
             or in any obligor upon the Bonds or under this Agreement or in
             any affiliate of the transferee or any such obligor, (C) is
             not connected with the transferee or any such obligor as an
             officer, employee, promoter, underwriter, trustee, partner,
             director or any person performing similar functions and (D) is
             approved by the Trustee in the exercise of reasonable care;
             for purposes of this definition "engineer" means a Person
             engaged in the engineering profession or otherwise qualified
             to pass upon engineering matters (including, but not limited
             to, a Person licensed as a professional engineer, whether or
             not then engaged in the engineering profession); and for
             purposes of this definition "appraiser" means a Person engaged
             in the business of appraising property or otherwise qualified
             to pass upon the Fair Value or fair market value of property.

               (b)  "Fair Value" means the fair value of the interests,
             rights, assets and/or properties assigned, leased, sold,
             transferred or otherwise disposed of (but, in the case of a
             lease, only to the extent of such lease) as may be determined
             by reference to (i) except in the case of a lease, the amount
             which would be likely to be obtained in an arm's-length
             transaction with respect to such interests, rights, assets
             and/or properties between an informed and willing buyer and an
             informed and willing seller, under no compulsion,
             respectively, to buy or sell, (ii) in the case of a lease, the
             amount (discounted to present value at a rate not lower than
             the taxable equivalent of the yield to maturity of the Bonds
             based on prevailing market prices immediately prior to the
             first public announcement of the proposed transaction) which
             would be likely to be obtained in an arm's-length transaction
             with respect to such interests, rights, assets and/or
             properties between an informed and willing lessee and an
             informed and willing lessor, neither under any compulsion to
             lease; (iii) the amount of investment with respect to such
             interests, rights, assets and/or properties which, together
             with a reasonable return thereon, would be likely to be
             recovered through ordinary business operations or otherwise,
             (iv) the cost, accumulated depreciation and replacement cost
             with respect to such interests, rights, assets and/or
             properties and/or (v) any other relevant factors; provided,
             however, that (x) Fair Value shall be determined without
             deduction for any mortgage, deed of trust, pledge, security
             interest, encumbrance, lease, reservation, restriction,
             servitude, charge or similar right or any other lien of any
             kind and (y) the Fair Value to the transferee of any property
             shall not reflect any reduction relating to the fact that such
             property may be of less value to a Person which is not the
             owner, lessee or operator of the property or any portion
             thereof than to a Person which is such owner, lessee or
             operator.  Fair Value may be determined, without physical
             inspection, by the use of accounting and engineering records
             and other data maintained by the Company or the transferee or
             otherwise available to the Expert certifying the same.

             SECTION 7.02  Instrument Furnished to the Pollution Control
          Corporation and Trustee.  The Company shall, within fifteen (15)
          days after the delivery thereof, furnish to the Pollution Control
          Corporation and the Trustee a true and complete copy of the
          agreements or other documents effectuating any such assignment,
          lease, sale, transfer or other disposition.  

             SECTION 7.03  Limitation.  This Agreement shall not be
          assigned nor shall the Facilities be leased, sold, transferred or
          otherwise disposed of, in whole or in part, except as provided in
          this Article VII or in Section 6.01 or 5.02 hereof.  This Article
          VII shall not apply to any sale, transfer or other disposition by
          the Company of all of its assets, as or substantially as an
          entirety, as contemplated in Section 6.01.


                                     ARTICLE VIII

                            EVENTS OF DEFAULT AND REMEDIES

             SECTION 8.01  Events of Default.  Each of the following events
          shall constitute and is referred to in this Agreement as an
          "Event of Default": 

               (a)  a failure by the Company to make any Loan Payment,
             which failure shall have resulted in an "Event of Default"
             under clause (a) or (b) of Section 9.01 of the Indenture; 

               (b)  a failure by the Company to pay when due any amount
             required to be paid under this Agreement or to observe and
             perform any covenant, condition or agreement on its part to be
             observed or performed (other than a failure described in
             clause (a) above), which failure shall continue for a period
             of sixty (60) days after written notice, specifying such
             failure and requesting that it be remedied, shall have been
             given to the Company by the Pollution Control Corporation or
             the Trustee, unless the Pollution Control Corporation and the
             Trustee shall agree in writing to an extension of such period
             prior to its expiration; provided, however, that the Pollution
             Control Corporation and the Trustee shall be deemed to have
             agreed to an extension of such period if corrective action is
             initiated by the Company within such period and is being
             diligently pursued; or 

               (c)  the dissolution or liquidation of the Company, or
             failure by the Company promptly to lift any execution,
             garnishment or attachment of such consequence as will impair
             its ability to make any payments under this Agreement, or the
             entry of an order for relief by a court of competent
             jurisdiction in any proceeding for its liquidation or
             reorganization under the provisions of any bankruptcy act or
             under any similar act which may be hereafter enacted, or an
             assignment by the Company for the benefit of its creditors, or
             the entry by the Company into an agreement of composition with
             its creditors (the term "dissolution or liquidation of the
             Company," as used in this clause, shall not be construed to
             include the cessation of the corporate existence of the
             Company resulting either from a merger or consolidation of the
             Company into or with another corporation or a dissolution or
             liquidation of the Company following a transfer of all or
             substantially all its assets as an entirety, under the
             conditions permitting such actions contained in Section 6.01
             hereof).  

             SECTION 8.02  Force Majeure.  The provisions of Section 8.01
          hereof are subject to the following limitations: if by reason of
          acts of God; strikes, lockouts or other industrial disturbances;
          acts of public enemies; orders of any kind of the government of
          the United States or of the State of Arizona, or any department,
          agency, political subdivision, court or official of any of them,
          or any civil or military authority; insurrections; riots;
          epidemics; landslides; lightning; earthquakes; volcanoes; fires;
          hurricanes; tornadoes; storms; floods; washouts; droughts;
          arrests; restraint of government and people; civil disturbances;
          explosions; breakage or accident to machinery; partial or entire
          failure of utilities; or any cause or event not reasonably within
          the control of the Company, the Company is unable in whole or in
          part to carry out any one or more of its agreements or
          obligations contained herein, other than its obligations under
          Sections 5.01, 5.03, 5.05 and 6.01 hereof, the Company shall not
          be deemed in default by reason of not carrying out said agreement
          or agreements or performing said obligation or obligations during
          the continuance of such inability.  The Company shall make
          reasonable effort to remedy with all reasonable dispatch the
          cause or causes preventing it from carrying out its agreements;
          provided, that the settlement of strikes, lockouts and other
          industrial disturbances shall be entirely within the discretion
          of the Company, and the Company shall not be required to make
          settlement of strikes, lockouts and other industrial disturbances
          by acceding to the demands of the opposing party or parties when
          such course is in the judgment of the Company unfavorable to the
          Company.

             SECTION 8.03  Remedies.  (a)  Upon the occurrence and
          continuance of any Event of Default described in clause (a) of
          Section 8.01 hereof, and further upon the condition that, in
          accordance with the terms of the Indenture, the Bonds shall have
          been declared to be immediately due and payable pursuant to any
          provision of the Indenture, the Loan Payments shall, without
          further action, become and be immediately due and payable.  

             Any waiver of any "Event of Default" under the Indenture and a
          rescission and annulment of its consequences shall constitute a
          waiver of the corresponding Event or Events of Default under this
          Agreement and a rescission and annulment of the consequences
          thereof.  

             (b)  Upon the occurrence and continuance of any Event of
          Default, the Pollution Control Corporation, or the Trustee with
          respect to the rights of the Pollution Control Corporation
          assigned to the Trustee by the Indenture, may take any action at
          law or in equity to collect any payments then due and thereafter
          to become due, or to enforce performance and observance of any
          obligation, agreement or covenant of the Company hereunder.  

             (c)  Any amounts collected by the Trustee from the Company
          pursuant to this Section 8.03 shall be applied in accordance with
          the Indenture.  

             SECTION 8.04  No Remedy Exclusive.  No remedy conferred upon
          or reserved to the Pollution Control Corporation hereby is
          intended to be exclusive of any other available remedy or
          remedies, but each and every such remedy shall be cumulative and
          shall be in addition to every other remedy given hereunder or now
          or hereafter existing at law or in equity or by statute.  No
          delay or omission to exercise any right or power accruing upon
          any default shall impair any such right or power or shall be
          construed to be a waiver thereof, but any such right or power may
          be exercised from time to time and as often as may be deemed
          expedient.  In order to entitle the Pollution Control Corporation
          to exercise any remedy reserved to it in this Article VIII, it
          shall not be necessary to give any notice, other than such notice
          as may be herein expressly required.

             SECTION 8.05  Reimbursement of Attorneys' and Agents' Fees. 
          If the Company shall default under any of the provisions hereof
          and the Pollution Control Corporation or the Trustee shall employ
          attorneys or agents or incur other reasonable expenses for the
          collection of payments due hereunder or for the enforcement of
          performance or observance of any obligation or agreement on the
          part of the Company contained herein, the Company will on demand
          therefor reimburse the Pollution Control Corporation or the
          Trustee and any predecessor Trustee, as the case may be, for the
          reasonable fees of such attorneys and such other reasonable
          expenses so incurred.  

             SECTION 8.06  Waiver of Breach.  In the event any obligation
          created hereby shall be breached by either of the parties and
          such breach shall thereafter be waived by the other party, such
          waiver shall be limited to the particular breach so waived and
          shall not be deemed to waive any other breach hereunder.  In view
          of the assignment of certain of the Pollution Control
          Corporation's rights and interest hereunder to the Trustee, the
          Pollution Control Corporation shall have no power to waive any
          breach hereunder by the Company in respect of such rights and
          interest without the consent of the Trustee, and the Trustee may
          exercise any of the rights of the Pollution Control Corporation
          hereunder.  


                                      ARTICLE IX

                                 REDEMPTION OF BONDS

             SECTION 9.01  Redemption of Bonds.  The Pollution Control
          Corporation shall take, or cause to be taken, the actions
          required by the Indenture to discharge the lien created thereby
          through the redemption, or provision for payment or redemption,
          of all Bonds then Outstanding, or to effect the redemption, or
          provision for payment or redemption, of less than all the Bonds
          then Outstanding, upon receipt by the Pollution Control
          Corporation and the Trustee from the Company of a notice
          designating the principal amount of the Bonds to be redeemed, or
          for the payment or redemption of which provision is to be made,
          and, in the case of redemption of Bonds, or provision therefor,
          specifying the date of redemption and the applicable redemption
          provision of the Indenture.  Such redemption date shall not be
          less than 45 days from the date such notice is given (unless a
          shorter notice is satisfactory to the Trustee).  Unless otherwise
          stated therein, such notice shall be revocable by the Company at
          any time prior to the time at which the Bonds to be redeemed, or
          for the payment or redemption of which provision is to be made,
          are first deemed to be paid in accordance with Article VIII of
          the Indenture.  The Company shall furnish any moneys or
          Government Obligations (as defined in the Indenture) required by
          the Indenture to be deposited with the Trustee or otherwise paid
          by the Pollution Control Corporation in connection with any of
          the foregoing purposes.  

             SECTION 9.02  Compliance with the Indenture.  Anything in this
          Agreement to the contrary notwithstanding, the Pollution Control
          Corporation and the Company shall take all actions required by
          this Agreement and the Indenture in order to comply with any
          provisions of the Indenture requiring the mandatory redemption of
          Bonds.


                                      ARTICLE X

                                    MISCELLANEOUS

             SECTION 10.01  Term of Agreement.  This Agreement shall remain
          in full force and effect from the date hereof until the right,
          title and interest of the Trustee in and to the Trust Estate (as
          defined in the Indenture) shall have ceased, terminated and
          become void in accordance with Article VIII of the Indenture and
          until all payments required under this Agreement shall have been
          made.  Notwithstanding the foregoing, the covenants contained in
          Section 5.03, 5.04, Section 6.04 and 8.05 hereof shall survive
          the termination of this Agreement.

             SECTION 10.02  Notices.  Except as otherwise provided in this
          Agreement, all notices, certificates, requests, requisitions and
          other communications hereunder shall be in writing and shall be
          sufficiently given and shall be deemed given when mailed by
          registered mail, postage prepaid, addressed as follows: if to the
          Pollution Control Corporation, c/o Mangum, Wall, Stoops & Warden,
          222 East Birch Avenue, Flagstaff, Arizona 86001, Attention:
          President; and if to the Company, at 220 West Sixth Street,
          Tucson, Arizona 85702, Attention: Treasurer; and if to the
          Trustee, at such address as shall be designated by it in the
          Indenture.  A copy of each notice, certificate, request or other
          communication given hereunder to the Pollution Control
          Corporation, the Company, or the Trustee shall also be given to
          the others.  The Pollution Control Corporation, the Company, and
          the Trustee may, by notice given hereunder, designate any further
          or different addresses to which subsequent notices, certificates,
          requests or other communications shall be sent.  

             SECTION 10.03  Parties in Interest.  This Agreement shall
          inure to the benefit of and shall be binding upon the Pollution
          Control Corporation, the Company and their respective successors
          and assigns, and no other person, firm or corporation shall have
          any right, remedy or claim under or by reason of this Agreement;
          provided, however, that the lien and security interest granted to
          the Trustee in Section 4.03 hereof, as well as the rights and
          remedies granted to the Pollution Control Corporation in Article
          VIII hereof, shall inure to the benefit of the Trustee, on behalf
          of the Owners from time to time of the Bonds, and shall be
          enforceable by the Trustee as a third party beneficiary or as
          assignee of the Pollution Control Corporation; and provided,
          further, that neither the County of Coconino, Arizona nor the
          State of Arizona shall in any event be liable for the payment of
          the principal of or premium, if any, or interest on the Bonds or
          for the performance of any pledge, mortgage, obligation or
          agreement created by or arising out of this Agreement or the
          issuance of the Bonds, and further that neither the Bonds nor any
          such obligation or agreement of the Pollution Control Corporation
          shall be construed to constitute an indebtedness of the County of
          Coconino, Arizona or the State of Arizona within the meaning of
          any constitutional or statutory provisions whatsoever, but shall
          be limited obligations of the Pollution Control Corporation
          payable solely out of the revenues derived from this Agreement,
          or from the sale of the Bonds, or from the investment or
          reinvestment of any of the foregoing, as provided herein and in
          the Indenture.  

             SECTION 10.04  Amendments.  This Agreement may be amended only
          by written agreement of the parties hereto, subject to the
          limitations set forth herein and in the Indenture.  

             SECTION 10.05  Counterparts.  This Agreement may be executed
          in any number of counterparts, each of which, when so executed
          and delivered, shall be an original; but such counterparts shall
          together constitute but one and the same Agreement.

             SECTION 10.06  Severability.  If any clause, provision or
          section of this Agreement shall, for any reason, be held illegal
          or invalid by any court, the illegality or invalidity of such
          clause, provision or section shall not affect any of the
          remaining clauses, provisions or sections hereof, and this
          Agreement shall be construed and enforced as if such illegal or
          invalid clause, provision or section had not been contained
          herein.  In case any agreement or obligation contained in this
          Agreement be held to be in violation of law, then such agreement
          or obligation shall be deemed to be the agreement or obligation
          of the Pollution Control Corporation or the Company, as the case
          may be, to the full extent permitted by law.  

             SECTION 10.07  Governing Law.  The laws of the State of
          Arizona shall govern the construction and enforcement of this
          Agreement, except that the provisions of Section 13.09 of the
          Indenture, construed as provided in Section 13.07 of the
          Indenture, shall apply to this Agreement as if contained herein.

             SECTION 10.08  Notice Regarding Cancellation of Contracts.  As
          required by the provisions of Section 38-511, Arizona Revised
          Statutes, as amended, notice is hereby given that political
          subdivisions of the State of Arizona or any of their departments
          or agencies may, within three (3) years of its execution, cancel
          any contract, without penalty or further obligation, made by the
          political subdivisions or any of their departments or agencies on
          or after September 30, 1988, if any person significantly involved
          in initiating, negotiating, securing, drafting or creating the
          contract on behalf of the political subdivisions or any of their
          departments or agencies is, at any time while the contract or any
          extension of the contract is in effect, an employee or agent of
          any other party to the contract in any capacity or a consultant
          to any other party of the contract with respect to the subject
          matter of the contract.  The cancellation shall be effective when
          written notice from the chief executive officer or governing body
          of the political subdivision is received by all other parties to
          the contract unless the notice specifies a later time.

             The Company covenants and agrees not to employ as an employee,
          agent or, with respect to the subject matter of this Agreement, a
          consultant, any person significantly involved in initiating,
          negotiating, securing, drafting or creating such Agreement on
          behalf of the Issuer within three (3) years from the execution
          hereof, unless a waiver is provided by the Pollution Control
          Corporation.

     <PAGE> 


             IN WITNESS WHEREOF, the parties hereto have caused this Loan
          Agreement to be duly executed as of the day and year first above
          written.


                                             COCONINO COUNTY, ARIZONA
                                             POLLUTION CONTROL CORPORATION


          ATTEST:                          By /s/ Bruce J. Nordstrom
                                             -----------------------------
                                                President
          /s/ Terrence J. Rice
          ----------------------
                   Secretary

                                             TUCSON ELECTRIC POWER COMPANY


          ATTEST:                       By  /s/ Kevin Larson
                                           ----------------------------
                                                Vice President
          /s/ Vincent J. Nitido
          -------------------------
                Assistant Secretary

     <PAGE> 

                                                                  EXHIBIT A

             A portion of the costs of the construction, improvement or
          equipping of the following Facilities will be financed or
          refinanced with the proceeds of the Pollution Control Revenue
          Bonds, 1997 Series A (Tucson Electric Power Company Navajo
          Project) issued by Coconino County, Arizona Pollution Control
          Corporation and referred to in the foregoing Loan Agreement.
                                 ____________________



             Sulphur dioxide abatement and related facilities more
          particularly described in the Tax Certificate and Agreement,
          dated as of April 29, 1997, between the Coconino County, Arizona
          Pollution Control Corporation and Tucson Electric Power Company. 










                                                      EXHIBIT 4d



          =================================================================
                                                                            
                                                                            





                                  INDENTURE OF TRUST



                                       BETWEEN



                               COCONINO COUNTY, ARIZONA
                            POLLUTION CONTROL CORPORATION



                                         AND



                    FIRST TRUST OF NEW YORK, NATIONAL ASSOCIATION




                                                   
                                  -----------------




                              DATED AS OF APRIL 1, 1997



                                                   
                                  -----------------




                                     AUTHORIZING

                           POLLUTION CONTROL REVENUE BONDS,
                                    1997 SERIES A
                    (TUCSON ELECTRIC POWER COMPANY NAVAJO PROJECT)

          =================================================================

   <PAGE> 

					(i)

                                  TABLE OF CONTENTS*

                                                                       Page
                                                                       ----

             Parties  . . . . . . . . . . . . . . . . . . . . . . . . .   1
             Recitals . . . . . . . . . . . . . . . . . . . . . . . . .   1
             Granting Clause  . . . . . . . . . . . . . . . . . . . . .   2


                                      ARTICLE I

                                     DEFINITIONS

             Section 1.01.  Definitions.  . . . . . . . . . . . . . . .   2

                                      ARTICLE II

                                      THE BONDS

             Section 2.01.  Creation of Bonds.  . . . . . . . . . . . .   9
             Section 2.02.  Form of Bonds.  . . . . . . . . . . . . . .   9
             Section 2.03.  Execution of Bonds. . . . . . . . . . . . .  10
             Section 2.04.  Authentication of Bonds.  . . . . . . . . .  11
             Section 2.05.  Bonds Not General Obligations.  . . . . . .  11
             Section 2.06.  Prerequisites to Authentication of Bonds. .  11
             Section 2.07.  Lost or Destroyed Bonds or Bonds Canceled in
                            Error   . . . . . . . . . . . . . . . . . .  12
             Section 2.08.  Transfer, Registration and 
                            Exchange of Bonds .  . . . . . . . . . . . . 12
             Section 2.09.  Other Obligations . . . . . . . . . . . . .  14
             Section 2.10   Temporary Bonds.  . . . . . . . . . . . . .  14
             Section 2.11.  Cancellation of Bonds . . . . . . . . . . .  14
             Section 2.12.  Payment of Principal and Interest . . . . .  14
             Section 2.13.  Applicability of Book-Entry Provisions  . .  14

                                     ARTICLE III

                                 REDEMPTION OF BONDS

             Section 3.01.    Redemption Provisions . . . . . . . . . .  15
             Section 3.02.    Selection of Bonds to be Redeemed . . . .  16
             Section 3.03.    Procedure for Redemption  . . . . . . . .  17
             Section 3.04.    Payment of Redemption Price . . . . . . .  17
             Section 3.05.    No Partial Redemption After Default . . .  17


          ---------------------

          *  This table of contents is not a part of the Indenture, and is
             for convenience only.  The captions herein are of no legal
             effect and do not vary the meaning or legal effect of any part
             of the Indenture.

   <PAGE> 
					(ii)

                                      ARTICLE IV

                                    THE BOND FUND

             Section 4.01.    Creation of Bond Fund . . . . . . . . . .  18
             Section 4.02.    Liens . . . . . . . . . . . . . . . . . .  18
             Section 4.03.    Deposits into Bond Fund . . . . . . . . .  18
             Section 4.04.    Use of Moneys in Bond Fund  . . . . . . .  18
             Section 4.05.    Custody of Bond Fund; Withdrawal 
				of Moneys   . . . . . . . . . . . . . .  19
             Section 4.06.    Bonds Not Presented for Payment . . . . .  19
             Section 4.07.    Moneys Held in Trust  . . . . . . . . . .  20

                                      ARTICLE V

                                THE CONSTRUCTION FUND

             Section 5.01.    Creation of, and Disbursements from,
                                Construction Fund   . . . . . . . . . .  20
             Section 5.02.    Completion of Facilities; Termination of
                                Construction. . . . . . . . . . . . . .  21
             Section 5.03.    Redemption of All Outstanding Bonds . . .  22
             Section 5.04.    Acceleration of Bonds . . . . . . . . . .  22
             Section 5.05.    Refunding of Bonds  . . . . . . . . . . .  22
             Section 5.06.    Moneys Held in Trust  . . . . . . . . . .  23

                                      ARTICLE VI

                                     INVESTMENTS

             Section 6.01.    Investments . . . . . . . . . . . . . . .  23

                                     ARTICLE VII

                                  GENERAL COVENANTS

             Section 7.01.    No General Obligations  . . . . . . . . .  23
             Section 7.02.    Performance of Covenants of the Pollution
                                Control Corporation; Representations. .  24
             Section 7.03.    Maintenance of Rights and Powers;
                                Compliance with Laws  . . . . . . . . .  24
             Section 7.04.    Enforcement of Obligations of the Company;
                                Amendments  . . . . . . . . . . . . . .  24
             Section 7.05.    Further Instruments.  . . . . . . . . . .  24
             Section 7.06.    No Disposition of Trust Estate. . . . . .  25
             Section 7.07.    Financing Statements.   . . . . . . . . .  25
             Section 7.08.    Tax Covenants; Rebate Fund. . . . . . . .  25
             Section 7.09.    Notices of Trustee. . . . . . . . . . . .  26

                                     ARTICLE VIII

                                      DEFEASANCE

             Section 8.01.    Defeasance. . . . . . . . . . . . . . . .  26


  <PAGE> 

					(iii)

                                      ARTICLE IX

                                DEFAULTS AND REMEDIES

             Section 9.01.    Events of Default.  . . . . . . . . . . .  27
             Section 9.02.    Remedies. . . . . . . . . . . . . . . . .  28
             Section 9.03.    Restoration to Former Position. . . . . .  29
             Section 9.04.    Owners' Right to Direct Proceedings.  . .  29
             Section 9.05.    Limitation on Owners' Right to Institute
                                 Proceedings.  . . . . . . . . . . . .   29
             Section 9.06.    No Impairment of Right to 
                                 Enforce Payment. . . . . . . . . . . .  29
             Section 9.07.    Proceedings by Trustee without Possession
                                 of Bonds. . . . . . . . . . . . . . .   29
             Section 9.08.    No Remedy Exclusive.  . . . . . . . . . .  30
             Section 9.09.    No Waiver of Remedies.  . . . . . . . . .  30
             Section 9.10.    Application of Moneys.  . . . . . . . . .  30
             Section 9.11.    Severability of Remedies. . . . . . . . .  31

                                      ARTICLE X

                TRUSTEE; PAYING AGENT AND CO-PAYING AGENTS; REGISTRAR

             Section 10.01.   Acceptance of Trusts. . . . . . . . . . .  31
             Section 10.02.   No Responsibility for Recitals. . . . . .  31
             Section 10.03.   Limitations on Liability. . . . . . . . .  31
             Section 10.04.   Compensation, Expenses and Advances.  . .  31
             Section 10.05.   Notice of Events of Default.  . . . . . .  32
             Section 10.06.   Action by Trustee.  . . . . . . . . . . .  32
             Section 10.07.   Good Faith Reliance.  . . . . . . . . . .  32
             Section 10.08.   Dealings in Bonds and with the Pollution
                                 Control Corporation and the Company. .  33
             Section 10.09.   Allowance of Interest.  . . . . . . . . .  33
             Section 10.10.   Construction of Indenture.  . . . . . . .  33
             Section 10.11.   Resignation of Trustee. . . . . . . . . .  33
             Section 10.12.   Removal of Trustee. . . . . . . . . . . .  33
             Section 10.13.   Appointment of Successor Trustee. . . . .  34
             Section 10.14.   Qualifications of Successor Trustee.  . .  34
             Section 10.15.   Judicial Appointment of 
                                Successor Trustee.. . . . . . . . . . .  34    
             Section 10.16.   Acceptance of Trusts by Successor Trustee. 35  
             Section 10.17.   Successor by Merger or Consolidation. . .  35
             Section 10.18.   Standard of Care. . . . . . . . . . . . .  35
             Section 10.19.   Notice to Owners of Bonds of Event of
                                 Default.  . . . . . . . . . . . . . .   35
             Section 10.20.   Intervention in Litigation of the
                                Pollution Control Corporation.  . . . .  35
             Section 10.21.   Paying Agent; Co-Paying Agents. . . . . .  35
             Section 10.22.   Qualifications of Paying Agent and
                                 Co-Paying Agents; Resignation; Removal. 36
             Section 10.23.   Registrar.  . . . . . . . . . . . . . . .  36
             Section 10.24.   Qualifications of Registrar; Resignation;
                                Removal.  . . . . . . . . . . . . . . .  37
             Section 10.25.   Several Capacities. . . . . . . . . . . .  37


   <PAGE> 

					(iv)

                                      ARTICLE XI

                   EXECUTION OF INSTRUMENTS BY OWNERS OF BONDS AND
                             PROOF OF OWNERSHIP OF BONDS

             Section 11.01.   Execution of Instruments; Proof of
                                Ownership.  . . . . . . . . . . . . . .  38

                                     ARTICLE XII

                MODIFICATION OF THIS INDENTURE AND THE LOAN AGREEMENT

             Section 12.01.   Limitations.  . . . . . . . . . . . . . .  38
             Section 12.02.   Supplemental Indentures without Owner
                                Consent.  . . . . . . . . . . . . . . .  38
             Section 12.03.   Supplemental Indentures with Consent of
                                Owners. . . . . . . . . . . . . . . . .  39
             Section 12.04.   Effect of Supplemental Indenture. . . . .  40
             Section 12.05.   Consent of the Company. . . . . . . . . .  40
             Section 12.06.   Amendment of Loan Agreement without
                                Consent of Owners.  . . . . . . . . . .  40
             Section 12.07.   Amendment of Loan Agreement with Consent
                                of Owners.  . . . . . . . . . . . . . ..  41

                                     ARTICLE XIII

                                    MISCELLANEOUS

             Section 13.01.   Successors of the Pollution Control
                               Corporation.  . . . . . . . . . . . . ..  41
             Section 13.02.   Parties in Interest.  . . . . . . . . . .  41
             Section 13.03.   Severability. . . . . . . . . . . . . . .  42
             Section 13.04.   No Personal Liability of Pollution Control
                                Corporation Officials.  . . . . . . . .  42
             Section 13.05.   Bonds Owned by the Pollution Control
                                Corporation or the Company. . . . . . .  42
             Section 13.06.   Counterparts. . . . . . . . . . . . . . .  42
             Section 13.07.   Governing Law.  . . . . . . . . . . . . .  42
             Section 13.08.   Notices.  . . . . . . . . . . . . . . . .  42
             Section 13.09.   Holidays. . . . . . . . . . . . . . . . .  43
             Section 13.10.   Statutory Notice Regarding Cancellation of
                                Contracts.    . . . . . . . . . . . . .  43


          Testimonium . . . . . . . . . . . . . . . . . . . . . . . .    44
          Signatures and Seals  . . . . . . . . . . . . . . . . . . .    44

          Exhibit A - Form of Bond  . . . . . . . . . . . . . . . . . . A-1
          Exhibit B - Form of Endorsement of Transfer . . . . . . . . . B-1
          Exhibit C - Form of Certificate of Authentication . . . . . . C-1

   <PAGE> 


                                  INDENTURE OF TRUST

             THIS INDENTURE OF TRUST, dated as of April 1, 1997 (this
          "Indenture"), between COCONINO COUNTY, ARIZONA POLLUTION CONTROL
          CORPORATION, an Arizona nonprofit corporation and a political
          subdivision of the State of Arizona (hereinafter called the
          "Pollution Control Corporation"), and First Trust of New York,
          National Association, as trustee (hereinafter called the
          "Trustee"),

                                W I T N E S S E T H :


             WHEREAS, the Pollution Control Corporation is authorized and
          empowered under Title 35, Chapter 6, Arizona Revised Statutes, as
          amended (the "Act"), to issue its bonds in accordance with the
          Act and to make secured or unsecured loans for the purpose of
          financing or refinancing the acquisition, construction,
          improvement or equipping of pollution control facilities
          consisting of real and personal properties, including but not
          limited to machinery and equipment whether or not now in
          existence or under construction, which are used in whole or in
          part to control, prevent, abate, alter, dispose or store, solid
          waste, thermal, noise, atmospheric or water pollutants,
          contaminants or products therefrom, whether such facilities serve
          one or more purposes or functions in addition to controlling,
          preventing, abating, altering, disposing or storing such
          pollutants, contaminants or the products therefrom, and to charge
          and collect interest on such loans and pledge the proceeds of
          loan agreements as security for the payment of the principal of
          and interest on bonds, or designated issues of bonds, issued by
          the Pollution Control Corporation and any agreements made in
          connection therewith, whenever the Board of Directors of the
          Pollution Control Corporation finds such loans to be in
          furtherance of the purposes of the Pollution Control Corporation;

             WHEREAS, the Pollution Control Corporation has heretofore
          issued and sold $16,700,000 aggregate principal amount of its
          Pollution Control Revenue Bonds, 1996 Series A (Tucson Electric
          Power Company Project), all of which remain outstanding (the
          "1996 Bonds"), the proceeds of which were loaned to the Tucson
          Electric Power Company, an Arizona corporation (the "Company"),
          for the purpose of financing a portion of the costs of the
          acquisition, construction, improvement and equipping of certain
          of the pollution control facilities (the "Facilities") described
          in Exhibit A to the Loan Agreement, dated as of April 1, 1997
          (the "Loan Agreement"), between the Pollution Control Corporation
          and Company; and

             WHEREAS, the Pollution Control Corporation proposes to issue
          and sell its revenue bonds as provided herein (the "Bonds") for
          the purpose of financing a portion of the costs of the
          acquisition, construction, improvement and equipping certain
          additional items of the Facilities and for the purpose of
          refinancing, by the payment or redemption of the 1996 Bonds, or
          provision therefor, the portion of the costs of the acquisition,
          construction, improvement and equipping of the Facilities
          previously financed with the proceeds of the 1996 Bonds;

             NOW, THEREFORE, for and in consideration of these premises and
          the mutual covenants herein contained, of the acceptance by the
          Trustee of the trusts hereby created, of the purchase and
          acceptance of the Bonds by the Owners (as hereinafter defined)
          thereof and of the sum of one dollar lawful money of the United
          States of America, to it duly paid by the Trustee at or before
          the execution and delivery of these presents, and for other good
          and valuable consideration the receipt and sufficiency of which
          are hereby acknowledged, in order to secure the payment of the
          principal of and premium, if any, and interest on the Bonds at
          any time Outstanding (as hereinafter defined) under this
          Indenture according to their tenor and effect and the performance
          and observance by the Pollution Control Corporation of all the
          covenants and conditions expressed or implied herein and
          contained in the Bonds, the Pollution Control Corporation does
          hereby grant, bargain, sell, convey, mortgage, pledge and assign,
          and grant a security interest in, the Trust Estate (as
          hereinafter defined) to the Trustee, its successors in trust and
          their assigns forever;

             TO HAVE AND TO HOLD all the same with all privileges and
          appurtenances hereby conveyed and assigned, or agreed or intended
          so to be, to the Trustee, its successors in trust and their
          assigns forever;

             IN TRUST NEVERTHELESS, upon the terms and trusts herein set
          forth, first, for the equal and proportionate benefit and
          security of all Owners of the Bonds issued under and secured by
          this Indenture without preference, priority or distinction as to
          the lien of any Bonds over any other Bonds;

             PROVIDED, HOWEVER, that if, after the right, title and
          interest of the Trustee in and to the Trust Estate shall have
          ceased, terminated and become void in accordance with Article
          VIII hereof, the principal of and premium, if any, and interest
          on the Bonds shall have been paid to the Owners thereof, or shall
          have been paid to the Company pursuant to Section 4.06 hereof,
          then and in that case these presents and the estate and rights
          hereby granted shall cease, terminate and be void, and thereupon
          the Trustee shall cancel and discharge this Indenture and execute
          and deliver to the Pollution Control Corporation and the Company
          such instruments in writing as shall be requisite to evidence the
          discharge hereof; otherwise this Indenture is to be and remain in
          full force and effect.

             THIS INDENTURE OF TRUST FURTHER WITNESSETH, and it is
          expressly declared, that all Bonds issued and secured hereunder
          are to be issued, authenticated and delivered, and the Trust
          Estate and the other estate and rights hereby granted are to be
          dealt with and disposed of, under, upon and subject to the terms,
          conditions, stipulations, covenants, agreements, trusts, uses and
          purposes as hereinafter expressed, and the Pollution Control
          Corporation has agreed and covenanted, and does hereby agree and
          covenant, with the Trustee and with the respective Owners, from
          time to time, of the Bonds, as follows:


                                      ARTICLE I

                                     DEFINITIONS

             Section 1.01.    Definitions.  The terms defined in this
          Article I shall, for all purposes of this Indenture, have the
          meanings herein specified, unless the context clearly requires
          otherwise:

          Act:

             "Act" shall mean Title 35, Chapter 6, Arizona Revised
          Statutes, and all acts supplemental thereto or amendatory
          thereof.

          Administration Expenses:

             "Administration Expenses" shall mean the reasonable expenses
          incurred by the Pollution Control Corporation with respect to the
          Loan Agreement, this Indenture and any transaction or event
          contemplated by the Loan Agreement or this Indenture, including
          the compensation and reimbursement of expenses and advances
          payable to the Trustee, to the Paying Agent, any Co-Paying Agent
          and the Registrar.

          Authorized Company Representative:

             "Authorized Company Representative" shall mean each person at
          the time designated to act on behalf of the Company by written
          certificate furnished to the Pollution Control Corporation and
          the Trustee containing the specimen signature of such person and
          signed on behalf of the Company by its President, any Vice
          President or its Treasurer, together with its Secretary or any
          Assistant Secretary.

          Bond Counsel:

             "Bond Counsel" shall mean any firm or firms of nationally
          recognized bond counsel experienced in matters pertaining to the
          validity of, and exclusion from gross income for federal tax
          purposes of interest on bonds issued by states and political
          subdivisions, selected by the Company and acceptable to the
          Pollution Control Corporation.

          Bond Fund:

             "Bond Fund" shall mean the fund created by Section 4.01
          hereof.

          Bonds:

             "Bond" or "Bonds" shall mean the bonds authorized to be issued
          under this Indenture.

          Capital Account:

             "Capital Account" shall mean any of the accounts so named
          established under Sections 4.01 and 5.01 hereof.

          Code:

             "Code" shall mean the Internal Revenue Code of 1986 or any
          successor statute thereto.  Each reference to a section of the
          Code herein shall be deemed to include the United States Treasury
          Regulations proposed or in effect thereunder and applicable to
          the Bonds or the use of proceeds thereof, unless the context
          clearly requires otherwise.  References to any particular Code
          section shall, in the event of a successor Code, be deemed to be
          a reference to the successor to such Code section.

          Company:

             "Company" shall mean Tucson Electric Power Company, a
          corporation organized and existing under the laws of the State of
          Arizona, its successors and their assigns, including without
          limitation, any successor obligor under Section 6.01 or 7.01 of
          the Loan Agreement to the extent of the obligations assumed
          thereunder.

          Completion Date:

             "Completion Date" shall mean the date specified in Section
          3.04 of the Loan Agreement.

          Construction (and other forms of the word "construct"):

             "Construction" (and other forms of the word "construct") shall
          mean, when used with respect to the Facilities, the construction
          of the Facilities and shall include, without limitation, the
          acquisition, construction, improvement and equipping of the
          Facilities, all as contemplated by the Act.

          Construction Fund:

             "Construction Fund" shall mean the fund created by Section
          5.01 hereof.

          Cost of Construction:

             "Cost of Construction" shall embrace all costs paid or
          incurred by the Company with respect to the Facilities and the
          financing thereof for the payment of which the Pollution Control
          Corporation is authorized to issue bonds under the Act, and shall
          include without limitation (a) obligations paid or incurred by
          the Company for labor, materials and other expenses and to
          contractors, builders and materialmen in connection with the
          construction of the Facilities; (b) the costs paid or incurred by
          the Company for contract bonds and for insurance of all kinds
          that may be deemed by the Company to be desirable or necessary
          during the course of construction of the Facilities; (c) the
          expenses paid or incurred by the Company for test borings,
          surveys, estimates, plans and specifications, and preliminary
          investigations therefor, with respect to the Facilities and for
          supervising construction, as well as for the performance of all
          other duties required by or reasonably necessary for the proper
          construction, of the Facilities; (d) Administration Expenses paid
          or incurred prior to the Completion Date and legal, accounting,
          financial, underwriting, advertising, recording and printing
          expenses and all other fees and expenses paid or incurred by the
          Company in connection with the issuance and sale of the Bonds;
          (e) amounts in respect of interest (exclusive of accrued interest
          paid by the initial purchasers upon delivery thereof) accruing
          upon the Bonds until the Completion Date; (f) all other costs
          that the Company shall be required to pay under the terms of any
          contract or contracts for the construction of the Facilities; (g)
          any other costs or expenses paid or incurred by the Company, and
          any sums required to reimburse the Company for work done by it,
          with respect to the Facilities which are properly chargeable to
          the capital account of the Company with respect to the Facilities
          or would be so chargeable for federal income tax purposes either
          with a proper election or but for a proper election to deduct the
          same; and (h) amounts required to be paid to the United States by
          the Company (on behalf of the Pollution Control Corporation) in
          respect of the Bonds pursuant to Section 148 of the Code.  For
          purposes of the application of the proceeds of the Bonds, the
          Cost of Construction shall be deemed to include the payment or
          redemption, or provision therefor, of any obligations, other than
          the Bonds, issued to finance or refinance any of the costs listed
          above.  The Cost of Construction shall also be deemed to include
          all costs paid or incurred with respect to the Facilities by any
          Person (as defined in the Loan Agreement) to whom the Facilities
          have been leased or sold as a whole or in part, provided that
          such costs, had they been paid or incurred by the Company, would
          otherwise constitute a portion of the Cost of Construction.

          Depositary:

             "Depositary" shall mean The Depository Trust Company or any
          successor thereto as a securities repository for the Bonds.

          Facilities:

             "Facilities" shall mean the real and personal properties,
          machinery and equipment currently existing, under construction
          and to be constructed which are described in Exhibit A to the
          Loan Agreement, as revised from time to time to reflect any
          changes therein, additions thereto, substitutions therefor and
          deletions therefrom permitted by the terms of the Loan Agreement,
          subject, however, to the provisions of Section 7.01 of the Loan
          Agreement.

          General Account:

             "General Account" shall mean the account so named established
          under Section 4.01 hereof.

          Government Obligations:

             "Government Obligations" shall mean:

                    (a) direct obligations of, or obligations the principal
             of and interest on which are unconditionally guaranteed by,
             the United States of America entitled to the benefit of the
             full faith and credit thereof; and

                    (b) certificates, depositary receipts or other
             instruments which evidence a direct ownership interest in
             obligations described in clause (a) above or in any specific
             interest or principal payments due in respect thereof;
             provided, however, that the custodian of such obligations or
             specific interest or principal payments shall be a bank or
             trust company organized under the laws of the United States of
             America or of any state or territory thereof or of the
             District of Columbia, with a combined capital stock surplus
             and undivided profits of at least $50,000,000; and provided,
             further, that except as may be otherwise required by law, such
             custodian shall be obligated to pay to the holders of such
             certificates, depositary receipts or other instruments the
             full amount received by such custodian in respect of such
             obligations or specific payments and shall not be permitted to
             make any deduction therefrom.

          Indenture:

             "Indenture" shall mean this Indenture of Trust, dated as of
          April 1, 1997, between the Pollution Control Corporation and the
          Trustee, and any and all modifications, alterations, amendments
          and supplements thereto.

          Investment Account:

             "Investment Account" shall mean any of the accounts so named
          established under Sections 4.01 and 5.01 hereof.

          Investment Securities:

             "Investment Securities" shall mean any of the following
          obligations or securities on which neither the Company nor any of
          its subsidiaries is the obligor: (a) Government Obligations; (b)
          interest bearing deposit accounts (which may be represented by
          certificates of deposit) in national, state or foreign banks
          having a combined capital and surplus of not less than
          $10,000,000; (c) bankers' acceptances drawn on and accepted by
          commercial banks having a combined capital and surplus of not
          less than $10,000,000; (d) (i) direct obligations of, (ii)
          obligations the principal of and interest on which are
          unconditionally guaranteed by, and (iii) any other obligations
          the interest on which is exempt from federal income taxation
          issued by, any state of the United States of America, the
          District of Columbia or the Commonwealth of Puerto Rico, or any
          political subdivision, agency, authority or other instrumentality
          of any of the foregoing, which, in any case, are rated by a
          nationally recognized rating agency in any of its three highest
          rating categories; (e) obligations of any agency or
          instrumentality of the United States of America; (f) commercial
          or finance company paper which is rated by a nationally
          recognized rating agency in any of its three highest rating
          categories; (g) corporate debt securities issued by corporations
          having debt securities rated by a nationally recognized rating
          agency in any of its three highest rating categories; (h)
          repurchase agreements with banking or financial institutions
          having a combined capital and surplus of not less than
          $10,000,000 with respect to any of the foregoing obligations or
          securities; (i) shares or interests in registered investment
          companies whose assets consist of obligations or securities which
          are described in any other clause of this sentence; and (j) any
          other obligations which may lawfully be purchased by the Trustee. 
          The commercial banks and banking institutions referred to above
          may include the entities acting as Trustee, Paying Agent,
          Co-Paying Agent and Registrar, hereunder if such entities shall
          otherwise satisfy the requirements set forth above.

          Loan Agreement:

             "Loan Agreement" shall mean the Loan Agreement, dated as of
          April 1, 1997, between the Pollution Control Corporation and the
          Company relating to the Bonds, and any and all modifications,
          alterations, amendments and supplements thereto.

          Loan Payments:

             "Loan Payments" shall mean the payments required to be made by
          the Company pursuant to Section 5.01 of the Loan Agreement.

          1954 Code:

             "1954 Code" shall mean the Internal Revenue Code of 1954, as
          amended.

          1996 Bonds:

             "1996 Bonds" shall mean the $16,700,000 aggregate principal
          amount of the Pollution Control Corporation's Pollution Control
          Revenue Bonds, 1996 Series A (Tucson Electric Power Company
          Project).

          Notice by Mail:

             "Notice by Mail" or "notice" of any action or condition "by
          Mail" shall mean a written notice meeting the requirements of
          this Indenture mailed by first-class mail to the Owners of
          specified registered Bonds at the addresses shown in the
          registration books maintained pursuant to Section 2.08 hereof;
          provided, however, that if, because of the temporary or permanent
          suspension of delivery of first-class mail or for any other
          reason, it is impossible or impracticable to give such notice by
          first-class mail, then such giving of notice in lieu thereof,
          which may include publication, as shall be made with the approval
          of the Trustee (or, if there be no trustee hereunder, the
          Pollution Control Corporation) shall constitute a sufficient
          giving of such notice.

          Notice by Publication:

             "Notice by Publication" or "notice" of any action or condition
          "by Publication" shall mean publication of a notice meeting the
          requirements of this Indenture in a newspaper or financial
          journal of general circulation in The City of New York, New York,
          which carries financial news, is printed in the English language
          and is customarily published on each business day; provided,
          however, that any successive weekly publication of notice
          required hereunder may be made, unless otherwise expressly
          provided herein, on the same or different days of the week and in
          the same or different newspapers or financial journals; and
          provided, further, that if, because of the temporary or permanent
          suspension of the publication or general circulation of any
          newspaper or financial journal or for any other reason, it is
          impossible or impracticable to publish such notice in the manner
          herein described, then such publication in lieu thereof as shall
          be made with the approval of the Trustee (or, if there be no
          trustee hereunder, the Pollution Control Corporation) shall
          constitute a sufficient publication of such notice.

          Outstanding:

             "Outstanding", when used in reference to the Bonds, shall
          mean, as at any particular date, the aggregate of all Bonds
          authenticated and delivered under this Indenture except:

                    (a) those canceled by the Trustee at or prior to such
             date or delivered to or acquired by the Trustee at or prior to
             such date for cancellation;

                    (b) those deemed to be paid in accordance with Article
             VIII hereof; and

                    (c) those in lieu of or in exchange or substitution for
             which other Bonds shall have been authenticated and delivered
             pursuant to this Indenture, unless proof satisfactory to the
             Trustee and the Company is presented that such Bonds are held
             by a bona fide holder in due course.

          Owner:

             "Owner" shall mean the person in whose name any Bond is
          registered upon the registration books maintained pursuant to
          Section 2.08 hereof.  The Company may be an Owner.

          Paying Agent; Co-Paying Agent; Principal Office thereof:

             "Paying Agent" and "Co-Paying Agent" shall mean the paying
          agent and any co-paying agent appointed in accordance with
          Section 10.21 hereof.  "Principal Office" of the Paying Agent or
          any Co-Paying Agent shall mean the office thereof designated in
          writing to the Trustee.

          Plant:

             "Plant" shall mean the Navajo Generating Station, an electric
          power generating plant near Page, Arizona, in Coconino County,
          Arizona, and any additions or improvements thereto or
          replacements thereof.

          Pollution Control Corporation:

             "Pollution Control Corporation" shall mean Coconino County,
          Arizona Pollution Control Corporation, an Arizona nonprofit
          corporation and a political subdivision of the State of Arizona
          incorporated for and with the approval of the County of Coconino,
          Arizona, pursuant to the provisions of the Constitution of the
          State of Arizona and the Act, its successors and their assigns.

          Rebate Fund:

             "Rebate Fund" shall mean the fund created by Section 7.08
          hereof.

          Receipts and Revenues of the Pollution Control Corporation from
          the Loan Agreement:

             "Receipts and Revenues of the Pollution Control Corporation
          from the Loan Agreement" shall mean all moneys paid or payable to
          the Trustee for the account of the Pollution Control Corporation
          by the Company in respect of the Loan Payments and payments
          pursuant to Section 9.01 of the Loan Agreement, and all receipts
          of the Trustee which, under the provisions of this Indenture,
          reduce the amount of such payments.

          Record Date:

             "Record Date" shall mean the close of business on the
          fifteenth (15th) day of the calendar month immediately preceding
          each regularly scheduled interest payment date.

          Registrar; Principal Office thereof:

             "Registrar" shall mean the registrar appointed in accordance
          with Section 10.23 hereof.  "Principal Office" of the Registrar
          shall mean the office thereof designated in writing to the
          Trustee.

          Supplemental Indenture:

             "Supplemental Indenture" shall mean any indenture of the
          Pollution Control Corporation modifying, altering, amending,
          supplementing or confirming this Indenture for any purpose, in
          accordance with the terms hereof.

          Supplemental Loan Agreement:

             "Supplemental Loan Agreement" shall mean any agreement between
          the Pollution Control Corporation and the Company modifying,
          altering, amending or supplementing the Loan Agreement, in
          accordance with the terms thereof and hereof.

          Tax Agreement:

             "Tax Agreement" shall mean that tax certificate and agreement,
          dated the date of the initial authentication and delivery of the
          Bonds, between the Pollution Control Corporation and the Company,
          relating to the requirements of the Code and the 1954 Code, and
          any and all modifications, alterations, amendments and
          supplements thereto.

          Trust Estate:

             "Trust Estate" shall mean at any particular time all right,
          title and interest of the Pollution Control Corporation in and to
          the Loan Agreement (except its rights under Sections 5.03, 5.04,
          6.03 and 8.05 thereof and any rights of the Pollution Control
          Corporation to receive notices, certificates, requests,
          requisitions and other communications thereunder), including
          without limitation, the Receipts and Revenues of the Pollution
          Control Corporation from the Loan Agreement, the Bond Fund and
          the Construction Fund and all moneys and Investment Securities
          from time to time on deposit therein (excluding, however, any
          moneys or Investment Securities held in the Rebate Fund), any and
          all other moneys and obligations (other than Bonds) which at such
          time are deposited or are required to be deposited with, or are
          held or are required to be held by or on behalf of, the Trustee,
          the Paying Agent or any Co-Paying Agent in trust under any of the
          provisions of this Indenture and all other rights, titles and
          interests which at such time are subject to the lien of this
          Indenture; provided, however, that in no event shall there be
          included in the Trust Estate (a) moneys or obligations deposited
          with or held by the Trustee in the Rebate Fund pursuant to
          Section 7.08 hereof or (b) moneys or obligations deposited with
          or paid to the Trustee for the redemption or payment of Bonds
          which are deemed to have been paid in accordance with Article
          VIII hereof or moneys held pursuant to Section 4.06 hereof.

          Trustee; Principal Office thereof:

             "Trustee" shall mean First Trust of New York, National
          Association, as trustee under this Indenture, its successors in
          trust and their assigns.  "Principal Office" of the Trustee shall
          mean the principal corporate trust office of the Trustee, which
          office at the date of acceptance by the Trustee of the duties and
          obligations imposed on the Trustee by this Indenture is located
          at the address specified in Section 13.08 hereof.


                                      ARTICLE II

                                      THE BONDS

             Section 2.01.    Creation of Bonds.  There is hereby
          authorized and created under this Indenture, for the purpose of
          providing moneys to pay a part of the Cost of Construction, an
          issue of Bonds, entitled to the benefit, protection and security
          of this Indenture, in the aggregate principal amount of Thirty-
          six Million Seven Hundred Thousand Dollars ($36,700,000).  Each
          of the Bonds shall be designated by the title "Coconino County,
          Arizona Pollution Control Corporation Pollution Control Revenue
          Bond, 1997 Series A (Tucson Electric Power Company Navajo
          Project)".  The Bonds shall mature, subject to prior redemption
          upon the terms and conditions hereinafter set forth, on October
          1, 2032 and shall bear interest from the date thereof until
          payment of the principal or redemption price thereof shall have
          been made or provided for in accordance with the provisions
          hereof, whether at maturity, upon redemption or otherwise, at the
          rate of seven and one-eighth per centum (7 1/8%) per annum, with
          interest thereon payable semi-annually on each October 1 and
          April 1, commencing October 1, 1997.  Interest shall be
          calculated on the basis of a 360-day year consisting of twelve
          30-day months.

             Section 2.02.    Form of Bonds.  Bonds shall be authenticated
          and delivered hereunder solely as fully registered bonds without
          coupons in the denomination of $5,000 or integral multiples
          thereof.  Bonds shall be numbered as determined by the Trustee. 
          Bonds authenticated prior to the first interest payment date
          shall be dated April 1, 1997.  Bonds authenticated on or
          subsequent to the first interest payment date shall be dated the
          interest payment date next preceding the date of authentication
          thereof, unless such date of authentication shall be an interest
          payment date to which interest on the Bonds has been paid in full
          or duly provided for, in which case they shall be dated such date
          of authentication; provided, however, that if, as shown by the
          records of the Trustee, interest on the Bonds shall be in
          default, Bonds issued in exchange for Bonds surrendered for
          transfer or exchange shall be dated the date to which interest
          has been paid in full on the Bonds surrendered.

             Principal of and premium, if any, on Bonds shall be payable to
          the Owners of such Bonds upon presentation and surrender of such
          Bonds at the Principal Office of the Paying Agent or any
          Co-Paying Agent.  Interest on the Bonds shall be paid by check
          drawn upon the Paying Agent and mailed to the Owners of such
          Bonds as of the close of business on the Record Date with respect
          to each interest payment date at the registered addresses of such
          Owners as they shall appear as of the close of business on such
          Record Date on the registration books maintained pursuant to
          Section 2.08 hereof notwithstanding the cancellation of any such
          Bond upon any exchange or registration of transfer subsequent to
          such Record Date, except that if and to the extent that there
          should be a default on the payment of interest on any Bond, such
          defaulted interest shall be paid to the Owners in whose name such
          Bond (or any Bond or Bonds issued upon any exchange or
          registration of transfer thereof) is registered as of the close
          of business on a date selected by the Trustee in its discretion,
          but not more than 15 days or less than 10 days prior to the date
          of payment of such defaulted interest; notwithstanding the
          foregoing, upon request to the Paying Agent by an Owner of not
          less than $1,000,000 in aggregate principal amount of Bonds,
          interest on such Bonds and, after presentation and surrender of
          such Bonds, the principal thereof shall be paid to such Owner by
          wire transfer to the account maintained within the continental
          United States specified by such Owner or, if such Owner maintains
          an account with the entity acting as Paying Agent, by deposit
          into such account.  Payment as aforesaid shall be made in such
          coin or currency of the United States of America as, at the
          respective times of payment, shall be legal tender for the
          payment of public and private debts.

             The Bonds and the form for registration of transfer and the
          form of certificate of authentication to be printed on the Bonds
          are to be in substantially the forms thereof set forth in
          Exhibits A, B and C hereto, respectively, with necessary or
          appropriate variations, omissions and insertions as permitted or
          required by this Indenture.

             Section 2.03.    Execution of Bonds.  The Bonds shall be
          executed on behalf of the Pollution Control Corporation by the
          President or a Vice President of the Pollution Control
          Corporation and shall have affixed, impressed or reproduced
          thereon the official seal of the Pollution Control Corporation
          which shall be attested by the Secretary or an Assistant
          Secretary of the Pollution Control Corporation.  Each of the
          foregoing officers may execute or cause to be executed with a
          facsimile signature in lieu of his manual signature the Bonds,
          provided the signature of either the President or a Vice
          President of the Pollution Control Corporation or the Secretary
          or Assistant Secretary of the Pollution Control Corporation
          shall, if required by applicable laws, be manually subscribed.

             In case any officer of the Pollution Control Corporation whose
          signature or a facsimile of whose signature shall appear on the
          Bonds shall cease to be such officer before the authentication by
          the Trustee and delivery of such Bonds, such signature or such
          facsimile shall nevertheless be valid and sufficient for all
          purposes, the same as if such officer had remained in office
          until delivery; and any Bond may be signed on behalf of the
          Pollution Control Corporation by such persons as, at the time of
          execution of such Bond, shall be the proper officers of the
          Pollution Control Corporation, even though at the date of such
          Bond or of the execution and delivery of this Indenture any such
          person was not such officer.

             Section 2.04.    Authentication of Bonds.  Only such Bonds as
          shall have endorsed thereon a certificate of authentication
          substantially in the form set forth in Exhibit C hereto duly
          executed by the Trustee shall be entitled to any right or benefit
          under this Indenture.  No Bond shall be valid or obligatory for
          any purpose unless and until such certificate of authentication
          shall have been duly executed by the Trustee, and such executed
          certificate of authentication of the Trustee upon any such Bonds
          shall be conclusive evidence that such Bond has been
          authenticated and delivered under this Indenture.  The Trustee's
          certificate of authentication on any Bond shall be deemed to have
          been executed by it if signed with an authorized signature of the
          Trustee, but it shall not be necessary that the same person sign
          the certificate of authentication on all of the Bonds issued
          hereunder.  This Section 2.04 is subject to the provisions of
          Section 10.17 hereof.

             Section 2.05.    Bonds Not General Obligations.  Neither the
          County of Coconino, Arizona nor the State of Arizona shall in any
          event be liable for the payment of the principal of or premium,
          if any, or interest on the Bonds, and neither the Bonds nor the
          premium, if any, or the interest thereon, shall be construed to
          constitute an indebtedness of County of Coconino, Arizona or the
          State of Arizona within the meaning of any constitutional or
          statutory provisions whatsoever.  The Bonds and the premium, if
          any, and the interest thereon shall be limited obligations of the
          Pollution Control Corporation payable solely from the Receipts
          and Revenues of the Pollution Control Corporation from the Loan
          Agreement and the other moneys pledged therefor under this

          Indenture, and such fact shall be plainly stated on the face of
          each Bond.

             Section 2.06.    Prerequisites to Authentication of Bonds. 
          The Pollution Control Corporation shall execute and deliver to
          the Trustee and the Trustee shall authenticate the Bonds and
          deliver said Bonds to the initial purchasers thereof as may be
          directed hereinafter in this Section 2.06.

             Prior to the delivery on original issuance by the Trustee of
          any authenticated Bonds there shall be or have been delivered to
          the Trustee:

                    (a) a duly certified copy of a resolution of the Board
             of Directors of the Pollution Control Corporation authorizing
             the execution and delivery of this Indenture and the Loan
             Agreement and the issuance of the Bonds;

                    (b) an original duly executed counterpart or a duly
             certified copy of the Loan Agreement;

                    (c) a request and authorization to the Trustee on
             behalf of the Pollution Control Corporation, signed by its
             President or a Vice President, to authenticate and deliver the
             Bonds in the aggregate principal amount determined by this
             Indenture to the purchaser or purchasers therein identified
             upon payment to the Trustee, but for the account of the
             Pollution Control Corporation, of a sum specified in such
             request and authorization plus any accrued interest on such
             Bonds to the date of delivery; and

                    (d) a written statement on behalf of the Company,
             executed by the President, any Vice President or the
             Treasurer, (i) approving the issuance and delivery of the
             Bonds and (ii) consenting to each and every provision of this
             Indenture.

             Section 2.07.    Lost or Destroyed Bonds or Bonds Canceled in
          Error.  If any Bond, whether in temporary or definitive form, is
          lost (whether by reason of theft or otherwise), destroyed
          (whether by mutilation, damage, in whole or in part, or
          otherwise) or canceled in error, the Pollution Control
          Corporation may execute and the Trustee may authenticate a new
          Bond of like date and denomination and bearing a number not
          contemporaneously outstanding; provided that (a) in the case of
          any mutilated Bond, such mutilated Bond shall first be
          surrendered to the Trustee and (b) in the case of any lost Bond
          or Bond destroyed in whole, there shall be first furnished to the
          Pollution Control Corporation, the Trustee and the Company
          evidence of such loss or destruction.  In every case, the
          applicant for a substitute Bond shall furnish the Pollution
          Control Corporation, the Trustee and the Company such security or
          indemnity as may be required by any of them.  In the event any
          lost or destroyed Bond or a Bond canceled in error shall have
          matured or is about to mature, or has been called for redemption,
          instead of issuing a substitute Bond the Trustee may, in its
          discretion, pay the same without surrender thereof if there shall
          be first furnished to the Pollution Control Corporation, the
          Trustee and the Company evidence of such loss, destruction or
          cancellation, together with indemnity, satisfactory to them. 
          Upon the issuance of any substitute Bond, the Pollution Control
          Corporation and the Trustee may require the payment of a sum
          sufficient to cover any tax or other governmental charge that may
          be imposed in relation thereto.  The Trustee may charge the Owner
          of any such Bond with the Trustee's reasonable fees and expenses
          in connection with any transaction described in this Section
          2.07.

             Every substitute Bond issued pursuant to the provisions of
          this Section 2.07 by virtue of the fact that any Bond is lost,
          destroyed or canceled in error shall constitute an additional
          contractual obligation of the Pollution Control Corporation,
          whether or not the Bond so lost, destroyed or canceled shall be
          at any time enforceable, and shall be entitled to all the
          benefits of this Indenture equally and proportionately with any
          and all other Bonds duly issued hereunder.  All Bonds shall be
          held and owned upon the express condition that, to the extent
          permitted by law, the foregoing provisions are exclusive with
          respect to the replacement or payment of lost, destroyed or
          improperly canceled Bonds, notwithstanding any law or statute now
          existing or hereafter enacted.

             Section 2.08.    Transfer, Registration and Exchange of Bonds. 
          The Registrar shall maintain and keep, at its Principal Office,
          books for the registration and registration of transfer of Bonds,
          which, at all reasonable times, shall be open for inspection by
          the Pollution Control Corporation, the Trustee and the Company;
          and, upon presentation for such purpose of any Bond entitled to
          registration or registration of transfer at the Principal Office
          of the Registrar, the Registrar shall register or register the
          transfer in such books,  under such reasonable regulations as the
          Registrar may prescribe.  The Registrar shall make all necessary
          provisions to permit the exchange or registration of transfer of
          Bonds at its Principal Office.

             The transfer of any Bond shall be registered upon the
          registration books of the Registrar at the written request of the
          Owner thereof or his attorney duly authorized in writing, upon
          surrender thereof at the Principal Office of the Registrar,
          together with a written instrument of transfer satisfactory to
          the Registrar duly executed by the Owner or his duly authorized
          attorney.  Upon the registration of transfer of any such Bond or
          Bonds, the Pollution Control Corporation shall issue in the name
          of the transferee, in authorized denominations, a new Bond or
          Bonds in the same aggregate principal amount as the surrendered
          Bond or Bonds.

             The Pollution Control Corporation, the Trustee, the Paying
          Agent, any Co-Paying Agent and the Registrar may deem and treat
          the Owner of any Bond as the absolute owner of such Bond, whether
          such Bond shall be overdue or not, for the purpose of receiving
          payment of, or on account of, the principal of and premium, if
          any, and, except as provided in Section 2.02 hereof, interest on
          such Bond and for all other purposes, and neither the Pollution
          Control Corporation, the Trustee, the Paying Agent, any Co-Paying
          Agent nor the Registrar shall be affected by any notice to the
          contrary.  All such payments so made to any such Owner or upon
          his order shall be valid and effective to satisfy and discharge
          the liability upon such Bond to the extent of the sum or sums so
          paid.

             Bonds, upon surrender thereof at the Principal Office of the
          Registrar may, at the option of the Owner thereof, be exchanged
          for an equal aggregate principal amount of Bonds of any
          authorized denomination.

             In all cases in which the privilege of exchanging Bonds or
          registering the transfer of Bonds is exercised, the Pollution
          Control Corporation shall execute and the Trustee shall
          authenticate and deliver Bonds in accordance with the provisions
          of this Indenture.  For every such exchange or registration of
          transfer of Bonds, whether temporary or definitive, the Pollution
          Control Corporation, the Registrar, or the Trustee may make a
          charge sufficient to reimburse it for any tax or other
          governmental charge required to be paid with respect to such
          exchange or registration of transfer, which sum or sums shall be
          paid by the person requesting such exchange or registration of
          transfer as a condition precedent to the exercise of the
          privilege of making such exchange or registration of transfer. 
          The Registrar shall not be obligated (a) to make any such
          exchange or registration of transfer of Bonds during the fifteen
          (15) days next preceding the date on which notice of any proposed
          redemption of Bonds is given or (b) to make any exchange or
          registration of transfer of any Bonds called for redemption.

             The Bonds are to be initially registered in the name of Cede &
          Co., as nominee for the Depositary.  Such Bonds shall not be
          transferable or exchangeable, nor shall any purported transfer be
          registered, except as follows:

                    (a) such Bonds may be transferred in whole, and
             appropriate registration of transfer effected, if such
             transfer is by such nominee to the Depositary, or by the
             Depositary to another nominee thereof, or by any nominee of
             the Depositary to any other nominee thereof, or by the
             Depositary or any nominee thereof to any successor securities
             depositary or any nominee thereof; and

                    (b) such Bond may be exchanged for definitive Bonds
             registered in the respective names of the beneficial holders
             thereof, and thereafter shall be transferable without
             restriction, if:

                    (i)  the Depositary shall have notified the Company and
             the Trustee that it is unwilling or unable to continue to act
             as securities depositary with respect to such Bonds and the
             Trustee shall not have been notified by the Company within
             ninety (90) days of the identity of a successor securities
             depositary with respect to such Bonds;

                    (ii)  the Company shall have delivered to the Trustee a
             written instrument to the effect that such Bonds shall be so
             exchangeable on and after a date specified therein; or

                    (iii)  (1) an Event of Default shall have occurred and
             be continuing, (2) the Trustee shall have given notice of such
             Event of Default pursuant to Section 10.19 hereof and (3)
             there shall have been delivered to the Pollution Control
             Corporation, the Company and the Trustee an opinion of counsel
             to the effect that the interests of the beneficial owners of
             such Bonds in respect thereof will be materially impaired
             unless such owners become owners of definitive Bonds.

             The Bonds delivered to the Depositary may contain a legend
          reflecting the foregoing restrictions on registration of transfer
          and exchange.

             Section 2.09.    Other Obligations.  The Pollution Control
          Corporation expressly reserves the right to issue, to the extent
          permitted by law, but shall not be obligated to issue,
          obligations under another indenture or indentures to provide
          additional funds to pay the Cost of Construction of the
          Facilities or to refund all or any principal amount of the Bonds,
          or any combination thereof.

             Section 2.10     Temporary Bonds.  Pending the preparation of
          definitive Bonds, the Pollution Control Corporation may execute
          and the Trustee shall authenticate and deliver temporary Bonds. 
          Temporary Bonds shall be issuable as registered Bonds without
          coupons, of any authorized denomination, and substantially in the
          form of the definitive Bonds but with such omissions, insertions
          and variations as may be appropriate for temporary Bonds, all as
          may be determined by the Pollution Control Corporation. 
          Temporary Bonds may contain such reference to any provisions of
          this Indenture as may be appropriate.  Every temporary Bond shall
          be executed by the Pollution Control Corporation and be
          authenticated by the Trustee upon the same conditions and in
          substantially the same manner, and with like effect, as the
          definitive Bonds.  As promptly as practicable the Pollution
          Control Corporation shall execute and shall furnish definitive
          Bonds and thereupon temporary Bonds may be surrendered in
          exchange therefor without charge at the Principal Office of the
          Trustee, and the Trustee shall authenticate and deliver in
          exchange for such temporary Bonds a like aggregate principal
          amount of definitive Bonds of authorized denominations.  Until so
          exchanged the temporary Bonds shall be entitled to the same
          benefits under this Indenture as definitive Bonds.

             Section 2.11.    Cancellation of Bonds.  All Bonds which shall
          have been surrendered to the Paying Agent or any Co-Paying Agent
          for payment or redemption, and all Bonds which shall have been
          surrendered to the Registrar for exchange or registration of
          transfer, shall be delivered to the Trustee for cancellation. 
          All Bonds delivered to or acquired by the Trustee for
          cancellation shall be canceled and destroyed by the Trustee.  The
          Trustee shall furnish to the Pollution Control Corporation, the
          Paying Agent, the Registrar and the Company counterparts of
          certificates evidencing such cancellation and destruction and
          specifying such Bonds by number.

             Section 2.12.    Payment of Principal and Interest.  For the
          payment of interest on the Bonds, the Pollution Control
          Corporation shall cause to be deposited in the Bond Fund, on each
          interest payment date, solely out of the Receipts and Revenues of
          the Pollution Control Corporation from the Loan Agreement and
          other moneys pledged therefor, an amount sufficient to pay the
          interest to become due on such interest payment date.  The
          obligation of the Pollution Control Corporation to cause any such
          deposit to be made hereunder shall be reduced by the amount of
          moneys in the Bond Fund available on such interest payment date
          for the payment of interest on the Bonds.

             For the payment of the principal of the Bonds upon maturity,
          the Pollution Control Corporation shall cause to be deposited in
          the Bond Fund, on the stated or accelerated date of maturity,
          solely out of the Receipts and Revenues of the Pollution Control
          Corporation from the Loan Agreement and other moneys pledged
          therefor, an amount sufficient to pay the principal of the Bonds. 
          The obligation of the Pollution Control Corporation to cause any
          such deposit to be made hereunder shall be reduced by the amount
          of moneys in the Bond Fund available on the maturity date for the
          payment of the principal of the Bonds.

             Section 2.13.    Applicability of Book-Entry Provisions.
          Anything in this Indenture to the contrary notwithstanding, (a)
          the provisions of the Blanket Issuer Letter of Representations,
          dated October 12, 1995, between the Pollution Control Corporation
          and The Depository Trust Company relating to the manner of and
          procedures for payment and redemption of Bonds and related
          matters shall apply so long as such Depositary shall be the Owner
          of all Outstanding Bonds and (b) the Pollution Control
          Corporation, the Trustee or the Paying Agent, as applicable,  may
          enter into a similar agreement, on terms satisfactory to the
          Company, with any subsequent Depositary and the provisions
          thereof shall apply so long as such Depositary shall be the Owner
          of all Outstanding Bonds.

                                     ARTICLE III

                                 REDEMPTION OF BONDS

             Section 3.01.    Redemption Provisions.  (a)  The Bonds shall
          be subject to redemption by the Pollution Control Corporation, at
          the direction of the Company, on any date on or after October 1,
          2007 in whole at any time or in part from time to time, at the
          applicable redemption price (expressed as a percentage of
          principal amount) set forth below, plus accrued interest to the
          redemption date:

                  Redemption Period         Redemption Price
                  -----------------         ----------------

           October 1, 2007 through
           September 30, 2008                         102%

           October 1, 2008 through
           September 30, 2009                         101%

           October 1, 2009 and thereafter             100%

             (b)  The Bonds shall be subject to redemption by the Pollution
          Control Corporation, at the direction of the Company, in whole at
          any time at the principal amount thereof plus accrued interest to
          the redemption date, if:

                    (i)  the Company shall have determined that the
             continued operation of the Plant is impracticable,
             uneconomical or undesirable for any reason;

                    (ii)  the Company shall have determined that the
             continued operation of the Facilities is impracticable,
             uneconomical or undesirable due to (A) the imposition of
             taxes, other than ad valorem taxes currently levied upon
             privately owned property used for the same general purpose as
             the Facilities, or other liabilities or burdens with respect
             to the Facilities or operation thereof, (B) changes in
             technology, in environmental standards or legal requirements
             or in the economic availability of materials, supplies,
             equipment or labor or (C) destruction of or damage to all or
             part of the Facilities;

                    (iii)  all or substantially all of the Facilities or
             the Plant shall have been condemned or taken by eminent
             domain; or

                    (iv)  the operation of the Facilities or the Plant
             shall have been enjoined or shall have otherwise been
             prohibited by, or shall conflict with, any order, decree, rule
             or regulation of any court or of any federal, state or local
             regulatory body, administrative agency or other governmental
             body.

             (c)  The Bonds shall be subject to mandatory redemption by the
          Pollution Control Corporation, at the principal amount thereof
          plus accrued interest to the redemption date, on the 180th day
          (or such earlier date as may be designated by the Company) after
          a final determination by a court of competent jurisdiction or an
          administrative agency, to the effect that, as a result of a
          failure by the Company to perform or observe any covenant,
          agreement or representation contained in the Loan Agreement, the
          interest payable on the Bonds is included for federal income tax
          purposes in the gross income of the owners thereof, other than
          any owner of a Bond who is a "substantial user" of the Facilities
          or a "related person" within the meaning of Section 103(b)(13) of
          the 1954 Code.  No determination by any court or administrative
          agency shall be considered final for the purposes of this Section
          3.01 (c) unless the Company shall have been given timely notice
          of the proceeding which resulted in such determination and an
          opportunity to participate in such proceeding, either directly or
          through an owner of a Bond, and until the conclusion of any
          appellate review sought by any party to such proceeding or the
          expiration of the time for seeking such review. The Bonds shall
          be redeemed either in whole or in part in such principal amount
          that the interest payable on the Bonds remaining outstanding
          after such redemption would not be included in the gross income
          of any owner thereof, other than an owner of a Bond who is a
          "substantial user" of the Facilities or a "related person" within
          the meaning of Section 103(b)(13) of the 1954 Code.

             (d)  In the event that the aggregate of the amounts deposited
          pursuant to Section 5.02 hereof into the Capital Account and the
          Investment Account maintained within the Bond Fund, together with
          any income or other gain from the investment thereof, shall at
          any time, or from time to time, be equal to or greater than
          $5,000, but only to the extent that such amounts are required
          under Section 4.04(b) hereof to be applied to the redemption of
          Bonds, the Pollution Control Corporation shall redeem Bonds, at
          the principal amount thereof plus accrued interest to the
          redemption date, in the largest aggregate principal amount which
          does not exceed the amount of such deposit or deposits, together
          with such income or gain, on the next interest payment date on
          which a redemption may be made in accordance with the provisions
          of Section 3.03(a) or (b) hereof and on which Bonds, in such
          amount, are otherwise redeemable at the principal amount thereof
          under subsection (a) or (b) of this Section 3.01.

             Section 3.02.    Selection of Bonds to be Redeemed.  If less
          than all the Bonds shall be called for redemption under any
          provision of this Indenture permitting such partial redemption,
          the particular Bonds or portions of Bonds to be redeemed shall be
          selected by the Trustee, in such manner as the Trustee in its
          discretion may deem proper, in the aggregate principal amount
          designated to the Trustee by the Company or otherwise as required
          by this Indenture; provided, however, that if, as indicated in a
          certificate of an Authorized Company Representative delivered to
          the Trustee, the Company shall have offered to purchase all Bonds
          then Outstanding and less than all such Bonds have been tendered
          to the Company for such purchase, the Trustee, at the direction
          of an Authorized Company Representative, shall select for
          redemption all such Bonds which shall not have been so tendered;
          and provided, further, that the portion of any Bond to be
          redeemed shall be in the principal amount of $5,000 or some
          integral multiple thereof and that, in selecting Bonds for
          redemption, the Trustee shall treat each Bond as representing
          that number of Bonds which is obtained by dividing the principal
          amount of such Bond by $5,000.  If it is determined that one or
          more, but not all, of the $5,000 units of principal amount
          represented by any such Bond is to be called for redemption,
          then, upon notice of intention to redeem such $5,000 unit or
          units, the Owner of such Bond shall forthwith surrender such Bond
          to the Paying Agent or any Co-Paying Agent for (y) payment to
          such Owner of the redemption price (including the redemption
          premium, if any, and accrued interest to the date fixed for
          redemption) of the $5,000 unit or units of principal amount
          called for redemption and (z) delivery to such Owner of a new
          Bond or Bonds in the aggregate principal amount of the unredeemed
          balance of the principal amount of any such Bond.  Bonds
          representing the unredeemed balance of the principal amount of
          any such Bond shall be delivered to the Owner thereof, without
          charge therefor.  If the Owner of any such Bond of a denomination
          greater than $5,000 shall fail to present such Bond to the Paying
          Agent or any Co-Paying Agent for payment and exchange as
          aforesaid, such Bond shall, nevertheless, become due and payable
          on the date fixed for redemption to the extent of the $5,000 unit
          or units of principal amount called for redemption (and to that
          extent only).

             Section 3.03.    Procedure for Redemption.  (a) In the event
          any of the Bonds are called for redemption, the Trustee shall
          give notice, in the name of the Pollution Control Corporation, of
          the redemption of such Bonds, which notice shall (i) specify the
          Bonds to be redeemed, the redemption date, the redemption price,
          and the place or places where amounts due upon such redemption
          will be payable (which shall be the Principal Office of the
          Paying Agent or any Co-Paying Agent) and, if less than all of the
          Bonds are to be redeemed, the numbers of the Bonds to be
          redeemed, and the portion of the principal amount of any Bond to
          be redeemed in part, (ii) state any condition to such redemption
          and (iii) state that on the redemption date, and upon the
          satisfaction of any such condition, the Bonds or portions thereof
          to be redeemed shall cease to bear interest.  Such notice may set
          forth any additional information relating to such redemption. 
          Such notice shall be given by Mail at least thirty (30) days
          prior to the date fixed for redemption to the Owners of the Bonds
          to be redeemed; provided, however, that failure duly to give such
          Notice by Mail, or any defect therein, shall not affect the
          validity of any proceedings for the redemption of Bonds as to
          which there shall have been no such failure or defect.  If a
          notice of redemption shall be unconditional, or if the conditions
          of a conditional notice or redemption shall have been satisfied,
          then upon presentation and surrender of Bonds so called for
          redemption at the place or places of payment, such Bonds shall be
          redeemed.  The Trustee shall promptly deliver to the Company a
          copy of each such notice of redemption.

             (b) With respect to any notice of redemption of Bonds in
          accordance with subsection (a) or (b) of Section 3.01 hereof,
          unless, upon the giving of such notice, such Bonds shall be
          deemed to have been paid within the meaning of Article VIII
          hereof, such notice shall state that such redemption shall be
          conditional upon the receipt, by the Trustee at or prior to the
          opening of business on the date fixed for such redemption, of
          moneys sufficient to pay the principal of and premium, if any,
          and interest on such Bonds to be redeemed, and that if such
          moneys shall not have been so received said notice shall be of no
          force and effect and the Pollution Control Corporation shall not
          be required to redeem such Bonds.  In the event that such notice
          of redemption contains such a condition and such moneys are not
          so received, the redemption shall not be made and the Trustee
          shall within a reasonable time thereafter give notice, in the
          manner in which the notice of redemption was given, that such
          moneys were not so received.

             (c)  Any Bonds and portions of Bonds which have been duly
          selected for redemption shall cease to bear interest on the
          specified redemption date provided that moneys sufficient to pay
          the principal of, premium, if any, and interest on such Bonds
          shall be on deposit with the Trustee on the date fixed for
          redemption so that such Bonds will be deemed to be paid in
          accordance with Article VIII hereof.

             Section 3.04.    Payment of Redemption Price.  For the
          redemption of any of the Bonds, the Pollution Control Corporation
          shall cause to be deposited in the Bond Fund, on the redemption
          date, solely out of the Receipts and Revenues of the Pollution
          Control Corporation from the Loan Agreement, an amount sufficient
          to pay the principal of and premium, if any, and interest to
          become due on such redemption date.  The obligation of the
          Pollution Control Corporation to cause any such deposit to be
          made hereunder shall be reduced by the amount of moneys in the
          Bond Fund available on such redemption date for payment of the
          principal of and premium, if any, and accrued interest on the
          Bonds to be redeemed.

             Section 3.05.    No Partial Redemption After Default. 
          Anything in this Indenture to the contrary notwithstanding, if
          there shall have occurred and be continuing an Event of Default
          defined in clause (a) or (b) of the first paragraph of Section
          9.01 hereof, there shall be no redemption of less than all of the
          Bonds at the time Outstanding other than a partial redemption in
          connection with an offer by the Company to purchase all Bonds
          Outstanding as contemplated in the first proviso to the first
          sentence of Section 3.02 hereof.


                                      ARTICLE IV

                                    THE BOND FUND

             Section 4.01.    Creation of Bond Fund.  There is hereby
          created and established with the Trustee a trust fund in the name
          of the Pollution Control Corporation to be designated "Coconino
          County, Arizona Pollution Control Corporation Pollution Control
          Revenue Bonds, 1997 Series A (Tucson Electric Power Company
          Navajo Project) Bond Fund".  The Trustee shall establish and
          maintain within the Bond Fund a "Capital Account", an "Investment
          Account" and a "General Account".  In addition, the Trustee shall
          establish and maintain such segregated subaccounts within the
          Capital Account or the Investment Account and such other
          segregated subaccounts within the Bond Fund as may be requested
          by an Authorized Company Representative.  The Bond Fund, and all
          moneys and certificated securities therein, shall be kept in the
          possession of the Trustee.

             Section 4.02.    Liens.  The Pollution Control Corporation
          shall not create any lien upon the Bond Fund or upon the Receipts
          and Revenues of the Pollution Control Corporation from the Loan
          Agreement other than the lien hereby created.

             Section 4.03.    Deposits into Bond Fund.  (a) There shall be
          deposited into the Bond Fund:

                    (i) the accrued interest, if any, on the Bonds accrued
             to the date of delivery thereof and paid by the initial
             purchasers thereof, such accrued interest to be deposited into
             the General Account;

                    (ii) all amounts required to be deposited into the Bond
             Fund by Section 5.02 hereof, such amounts to be deposited into
             the Capital Account or the Investment Account;

                    (iii) all amounts required to be deposited into the
             Bond Fund by Sections 5.03 and 5.04 hereof, such amounts to be
             deposited into the General Account;

                    (iv) all Loan Payments, such payments and moneys to be
             deposited into the General Account; and

                    (v) all other moneys received by the Trustee under and
             pursuant to any provision of the Loan Agreement, other than
             Sections 5.03, 5.04 and 8.05 thereof, or from any other source
             when accompanied by directions by the Company that such moneys
             are to be paid into the Bond Fund, such moneys to be deposited
             into the account specified by such provision of the Loan
             Agreement or by such directions, or, if no specification is
             made, into the General Account.

             (b) All income or other gain from the investment of moneys in
          the Capital Account or the Investment Account shall be deposited
          into the Investment Account.  All income or other gain from the
          investment of moneys in the General Account shall be deposited
          into the General Account.

             Section 4.04.    Use of Moneys in Bond Fund.  (a)   Moneys, if
          any, paid into the Bond Fund pursuant to clause (i) of Section
          4.03(a) hereof shall be applied to the payment of interest on the
          Bonds.  Except as otherwise provided in Sections 4.06, 9.01 and
          10.04 hereof, all other moneys in the Bond Fund constituting part
          of the Trust Estate shall be used solely for the payment of the
          principal of and premium, if any, and interest on the Bonds as
          the same shall become due and payable at maturity, upon
          redemption or otherwise.  

             (b) Moneys deposited pursuant to Section 5.02 hereof into the
          Capital Account or the Investment Account maintained within the
          Bond Fund, and any income or other gain from the investment
          thereof, shall be applied by the Trustee (i) in whole or in part
          (A) to the purchase of Bonds in such amounts, at such prices, at
          such times and otherwise as directed by an Authorized Company
          Representative, or to the redemption, at the direction of the
          Company, of Bonds pursuant to subsection (b) or, if applicable,
          (a) of Section 3.01 hereof or (B) in any other manner directed by
          an Authorized Company Representative which, as indicated in an
          opinion of Bond Counsel furnished by the Company to the Pollution
          Control Corporation and the Trustee, will not, in and of itself,
          impair the validity under the Act of the Bonds or the exclusion
          of the interest on the Bonds from gross income for federal income
          tax purposes, or, in the absence of any such purchase, redemption
          or direction on or prior to the forty-fifth (45th) day prior to
          the first interest payment date specified in Section 3.01(d)
          hereof, (ii) to the payment of principal upon the redemption,
          from time to time, of Bonds pursuant to Section 3.01(d) hereof,
          any moneys which are not so applied to be retained in the
          accounts into which they were deposited and applied by the
          Trustee to the payment of principal of Bonds either at maturity
          or upon the redemption of all or any portion of the Bonds,
          whichever occurs first.  Pending the application of moneys
          deposited into the Bond Fund pursuant to Section 5.02 hereof,
          such moneys may be invested in Investment Securities in the
          manner permitted by Section 6.01 hereof, provided that such
          investment shall not produce a yield greater than the yield on
          the Bonds unless, as indicated in an opinion of Bond Counsel
          furnished by the Company to the Pollution Control Corporation and
          the Trustee, investments producing a greater yield would not, in
          and of itself, impair the exclusion from gross income for federal
          tax purposes of the interest on the Bonds.

             (c) In the event that all of the Bonds cease to be
          Outstanding, any moneys remaining in the Capital Account or the
          Investment Account shall be deposited into the General Account.

             Section 4.05.    Custody of Bond Fund; Withdrawal of Moneys. 
          The Bond Fund shall be in the custody of the Trustee but in the
          name of the Pollution Control Corporation and the Pollution
          Control Corporation hereby authorizes and directs the Trustee to
          withdraw from the Bond Fund and furnish to the Paying Agent funds
          constituting part of the Trust Estate sufficient to pay the
          principal of and premium, if any, and interest on the Bonds as
          the same shall become due and payable, and to withdraw from the
          Bond Fund funds sufficient to pay any other amounts payable
          therefrom as the same shall become due and payable.


             Section 4.06.    Bonds Not Presented for Payment.  In the
          event any Bonds shall not be presented for payment when the
          principal thereof and premium, if any, thereon become due, either
          at maturity or at the date fixed for redemption thereof or
          otherwise, if moneys sufficient to pay such Bonds are held by the
          Paying Agent or any Co-Paying Agent for the benefit of the Owners
          thereof, the Paying Agent shall segregate and hold such moneys in
          trust, without liability for interest thereon, for the benefit of
          the Owners of such Bonds, who shall, except as provided in the
          following paragraph, thereafter be restricted exclusively to such
          fund or funds for the satisfaction of any claim of whatever
          nature on their part under this Indenture or relating to said
          Bonds.

             Any moneys which the Paying Agent shall segregate and hold in
          trust for the payment of the principal of and premium, if any, or
          interest on any Bond and remaining unclaimed for one year after
          such principal, premium, if any, or interest has become due and
          payable shall, upon the Company's written request to the Paying
          Agent, be paid to the Company, with notice to the Trustee of such
          action; provided, however, that before the Paying Agent shall be
          required to make any such repayment, the Paying Agent may, and at
          the request of the Trustee shall, at the expense of the Company
          cause notice to be given once by Publication to the effect that
          such money remains unclaimed and that, after a date specified
          therein, which shall not be less than thirty (30) days from the
          date of such notice by Publication, any unclaimed balance of such
          moneys then remaining will be paid to the Company.  After the
          payment of such unclaimed moneys to the Company, the Owner of
          such Bond shall thereafter look only to the Company for the
          payment thereof, and all liability of the Pollution Control
          Corporation, the Trustee and the Paying Agent with respect to
          such moneys shall thereupon cease.

             Section 4.07.    Moneys Held in Trust.  All moneys and
          Investment Securities held by the Trustee in the Bond Fund, and
          all moneys required to be deposited with or paid to the Trustee
          for deposit into the Bond Fund, and all moneys withdrawn from the
          Bond Fund and held by the Trustee, the Paying Agent, any
          Co-Paying Agent, shall be held by the Trustee, the Paying Agent
          or any Co-Paying Agent, as the case may be, in trust, and such
          moneys and Investment Securities (other than moneys held pursuant
          to Section 4.06 hereof and moneys or Investment Securities held
          in the Rebate Fund established in furtherance of the obligations
          of the Company under clause (b) of Section 6.04 of the Loan
          Agreement), while so held or so required to be deposited or paid,
          shall constitute part of the Trust Estate and be subject to the
          lien and security interest created hereby in favor of the Trustee
          for the benefit of the Owners from time to time of the Bonds. 
          The Company shall have no right, title or interest in the Bond
          Fund, except such rights as may arise after the right, title and
          interest of the Trustee in and to the Trust Estate and all
          covenants, agreements and other obligations of the Pollution
          Control Corporation under this Indenture shall have ceased,
          terminated and become void and shall have been satisfied and
          discharged in accordance with Article VIII hereof.


                                      ARTICLE V

                                THE CONSTRUCTION FUND

             Section 5.01.    Creation of, and Disbursements from,
          Construction Fund.  (a) There is hereby created and established
          with the Trustee a trust fund in the name of the Pollution
          Control Corporation to be designated "Coconino County, Arizona
          Pollution Control Corporation Pollution Control Revenue Bonds,
          1997 Series A (Tucson Electric Power Company Navajo Project)
          Construction Fund".  The Trustee shall establish and maintain
          within the Construction Fund a "Capital Account" and an
          "Investment Account".  The Trustee shall establish and maintain
          any subaccount within the Capital Account or the Investment
          Account which may be requested by an Authorized Company
          Representative.  The Construction Fund, and all moneys and
          certificated securities therein, shall be kept in the possession
          of the Trustee.  The Pollution Control Corporation shall not
          create any lien upon the Construction Fund other than the lien
          hereby created.

             (b) The proceeds from the issuance and sale of the Bonds,
          other than the $16,700,000 deposited in escrow with the trustee
          for the 1996 Bonds as provided in Section 4.03 of the Loan
          Agreement and accrued interest, if any, on such Bonds to the date
          of delivery thereof paid by the initial purchasers thereof, shall
          be deposited into the Capital Account.  All income or other gain
          from the investment of moneys in the Capital Account or the
          Investment Account shall be deposited into the Investment
          Account.  In the event that all or a portion of the proceeds of
          the Bonds shall have been applied to the payment or redemption,
          or provision therefor, of any obligations issued by the Pollution
          Control Corporation other than Bonds, any balance remaining in
          the construction, acquisition or other similar fund maintained in
          respect of such obligations, which balance shall have been
          delivered to the Trustee accompanied by a direction of the
          Company that such balance be deposited into the Construction
          Fund, shall be deposited into the Capital Account and the
          Investment Account in accordance with such direction.

             (c) The Trustee is hereby authorized and directed to disburse
          moneys in the Construction Fund to or upon the order of the
          Company from time to time upon receipt by the Trustee of
          requisitions executed by, or communications by telegram, telex or
          facsimile transmission from, an Authorized Company
          Representative, which requisitions or communications shall state
          with respect to each payment to be made: (i) the requisition
          number, (ii) the name and address of the person, firm or
          corporation to whom payment is due or has been made (or, in the
          case of payments to the Bond Fund, instructions to make such
          payments thereto), (iii) the amount paid or to be paid, (iv) the
          account or accounts within the Construction Fund from which
          payment of such requisition, or any portion thereof, shall be
          made, (v)(A) that each obligation, item of cost or expense with
          respect to which such requisition is being made has been properly
          incurred and has been paid or is then due and payable as an item
          of the Cost of Construction, is a proper charge against the
          Construction Fund, and has not been the basis of any previous
          final payment therefrom or from the proceeds of any other
          obligations issued by the Pollution Control Corporation or (B) in
          the event that a portion of the Bonds shall have been paid,
          redeemed or deemed to have been paid within the meaning of
          Article VIII hereof by reason of the application of the proceeds
          of the sale of any obligations issued under an indenture other
          than this Indenture and if the payment of such requisition is to
          be made into the construction, acquisition or other similar fund
          created under such other indenture, that upon disbursement from
          such construction, acquisition or other similar fund, each
          obligation, item of cost or expense mentioned in the requisition
          for such disbursement shall have been properly incurred and shall
          have been paid or will then be due and payable as an item of the
          Cost of Construction, (vi) that the payment of such requisition
          will not result in a breach of any of the covenants of the
          Company contained in Section 4.04 (c) or (d) of the Loan
          Agreement and (vii) that, to the best of the knowledge of such
          Authorized Company Representative, there shall not have occurred
          and be continuing any event of default under the Loan Agreement. 
          In Section 4.04 of the Loan Agreement the Company has agreed that
          any such communication by telegram, telex or facsimile
          transmission shall be promptly confirmed by a requisition
          executed by an Authorized Company Representative.

             (d) In paying any requisition under this Section 5.01, the
          Trustee shall be entitled to rely as to the completeness and
          accuracy of all statements in such requisition upon the approval
          of such requisition by an Authorized Company Representative,
          execution thereof to be conclusive evidence of such approval, and
          the Company has by the provisions of the Loan Agreement
          covenanted and agreed to indemnify and save harmless the Trustee
          from any liability incurred in connection with the payment of any
          requisition so executed by an Authorized Company Representative.

             The Trustee shall keep and maintain adequate records
          pertaining to each account within the Construction Fund and all
          disbursements therefrom and, upon receipt of a certificate
          furnished pursuant to Section 3.04 or Section 3.08(b) of the Loan
          Agreement, the Trustee shall, if requested by the Pollution
          Control Corporation or the Company, file an accounting thereof
          with the Pollution Control Corporation and with the Company.

             Section 5.02.    Completion of Facilities; Termination of
          Construction.    Upon receipt by the Trustee of a certificate
          furnished pursuant to Section 3.04 or Section 3.08(b) of the Loan
          Agreement, any balance remaining in the Capital Account or the
          Investment Account maintained within the Construction Fund (other
          than amounts retained by the Trustee at the direction of the
          Company pursuant to Section 3.04 or 3.08 of the Loan Agreement or
          in furtherance of the covenant of the Company contained in clause
          (b) of Section 6.04 of the Loan Agreement) shall (a) be applied
          in whole or in part (i) to the purchase of Bonds in such amounts,
          at such prices, at such times and otherwise as directed by an
          Authorized Company Representative, or (ii) in any other manner
          directed by the Company which, as indicated in an opinion of Bond
          Counsel furnished by the Company to the Pollution Control
          Corporation and the Trustee, will not impair the validity under
          the Act of the Bonds or the exclusion of the interest on the
          Bonds from gross income for federal income tax purposes or (b) in
          the absence of any such purchase or direction within sixty (60)
          days of the receipt by the Trustee of such certificate (or such
          shorter period as the Company shall direct), be deposited by the
          Trustee into the corresponding account maintained within the Bond
          Fund.  From time to time as the proper disposition of the amounts
          retained by the Trustee in the Construction Fund as aforesaid
          shall be determined, to the extent that such amounts are not paid
          out in full by the Trustee pursuant to Section 5.01 or 6.01
          hereof, the Company shall so notify the Trustee and the Pollution
          Control Corporation by one or more certificates as aforesaid and
          any amounts from time to time no longer to be so retained by the
          Trustee shall be applied as aforesaid.  Pending the application
          of any moneys remaining in the Construction Fund following the
          receipt of the aforesaid certificate, such moneys may be invested
          in Investment Securities in the manner permitted by Section 6.01
          hereof, provided that such investments (other than investments
          made with the moneys retained by the Trustee at the direction of
          the Company pursuant to Section 3.04 or 3.08 of the Loan
          Agreement) shall not produce a yield greater than the yield on
          the Bonds unless, as indicated in an opinion of Bond Counsel
          furnished by the Company to the Pollution Control Corporation and
          the Trustee, investments producing a greater yield would not, in
          and of itself, impair the exclusion from gross income for federal
          tax purposes of the interest on the Bonds.

             Section 5.03.    Redemption of All Outstanding Bonds.  Except
          as set forth in Section 5.05 hereof, in the event that all
          Outstanding Bonds are to be redeemed, the Trustee shall, without
          further authorization, deposit into the General Account within
          the Bond Fund all amounts remaining in the Construction Fund
          constituting part of the Trust Estate, with advice to the
          Pollution Control Corporation and the Company of such action,
          such deposit to be made on the date fixed for such redemption.

             Section 5.04.    Acceleration of Bonds.  In the event that the
          principal of the Bonds shall have become due and payable pursuant
          to Section 9.01 hereof, the Trustee shall, without further
          authorization, deposit into the General Account within the Bond
          Fund all amounts constituting part of the Trust Estate remaining
          in the Construction Fund, with advice to the Pollution Control
          Corporation and the Company of such action, such deposit to be
          made on the date fixed for such acceleration.

             Section 5.05.    Refunding of Bonds.  In the event that all
          Outstanding Bonds are paid, redeemed or deemed to have been paid
          within the meaning of Article VIII hereof by reason of the
          application of the proceeds of the sale of any obligations the
          interest on which is exempt from federal income taxation, under
          an indenture other than this Indenture, the Trustee shall,
          without further authorization, withdraw all amounts constituting
          part of the Trust Estate remaining in the Capital Account and the
          Investment Account maintained within the Construction Fund and
          deposit such amounts into corresponding accounts in the
          construction, acquisition or other similar fund created under the
          indenture under which such obligations are issued, with advice to
          the Pollution Control Corporation and the Company of such action,
          such withdrawals and deposits to be made, in accordance with the
          provisions of such indenture, on the date on which such Bonds are
          so paid, redeemed or deemed to have been paid; provided, however,
          that if Bonds shall have been paid, redeemed or deemed to have
          been paid within the meaning of Article VIII hereof by reason of
          the application of the proceeds of the sale of more than one
          issue of obligations the interest on which is excluded from gross
          income for federal income tax purposes under indentures other
          than this Indenture, the Trustee shall, if directed by an
          Authorized Company Representative, withdraw all amounts remaining
          in the Capital Account and the Investment Account maintained
          within the Construction Fund and such amounts shall be allocated
          among, and deposited into, as directed by such Authorized Company
          Representative, corresponding accounts in the construction,
          acquisition or other similar funds created under the indentures
          under which such obligations are issued, with advice to the
          Pollution Control Corporation and the Company of such action,
          such withdrawals and deposits to be made, in accordance with the
          provisions of such indentures, on the date on which all Bonds are
          so paid, redeemed or deemed to have been paid.

             Section 5.06.    Moneys Held in Trust.  All moneys and
          Investment Securities held by the Trustee in the Construction
          Fund, shall be held by the Trustee, in trust and such moneys and
          Investment Securities (other than any moneys or Investment
          Securities held in any subaccount within the Construction Fund
          established in furtherance of the obligations of the Company
          under Section 6.04(b) of the Loan Agreement) while so held or so
          required to be deposited or paid, shall constitute part of the
          Trust Estate and be subject to the lien and security interest
          created hereby in favor of the Trustee for the benefit of the
          Owners from time to time of the Bonds.  The Company shall have no
          right, title or interest in the Construction Fund, except that,
          to the extent not required to be applied in another manner by any
          provision hereof, moneys held by the Trustee in the Construction
          Fund shall be disbursed by the Trustee to the Company upon and to
          the extent of, but solely upon and to the extent of, satisfaction
          of the conditions set forth in Section 5.01(c) hereof.


                                      ARTICLE VI


                                     INVESTMENTS

             Section 6.01.    Investments.  The moneys in the Construction
          Fund and in the Bond Fund shall, at the direction of the Company,
          be invested and reinvested in Investment Securities.  Any
          Investment Securities may be purchased subject to options or
          other rights in third parties to acquire the same.  In addition,
          except with respect to moneys or Investment Securities held
          within the General Account of the Bond Fund, the Trustee shall,
          at the direction of the Company, enter into (i) reverse
          repurchase agreements, option agreements and agreements to lend
          securities with respect to any Investment Securities held by it
          and (ii) transactions for the purchase or sale of financial
          futures contracts in obligations which constitute Investment
          Securities or options on financial futures contracts in
          obligations which constitute Investment Securities.  Subject to
          the further provisions of this Section 6.01, such investments
          shall be made by the Trustee as directed and designated by the
          Company in a certificate of, or telephonic advice promptly
          confirmed by a certificate of, an Authorized Company
          Representative.  As and when any amounts thus invested may be
          needed for disbursements from the Construction Fund or the Bond
          Fund, the Trustee shall request the Company to designate such
          investments to be sold or otherwise converted into cash to the
          credit of such fund as shall be sufficient to meet such
          disbursement requirements and shall then follow any directions in
          respect thereto of an Authorized Company Representative.  As long
          as no Event of Default (as defined in Section 9.01 hereof) shall
          have occurred and be continuing, the Company shall have the right
          to designate the investments to be sold and to otherwise direct
          the Trustee in the sale or conversion to cash of the investments
          made with the moneys in the Construction Fund and in the Bond
          Fund, provided that the Trustee shall be entitled to conclusively
          assume the absence of any such Event of Default unless it has
          notice thereof within the meaning of Section 10.05 hereof.


                                     ARTICLE VII

                                  GENERAL COVENANTS

             Section 7.01.    No General Obligations.  Each and every
          covenant herein made, including all covenants made in the various
          sections of this Article VII, is predicated upon the condition
          that neither the County of Coconino, Arizona nor the State of
          Arizona shall in any event be liable for the payment of the
          principal of, or premium, if any, or interest on the Bonds or for
          the performance of any pledge, mortgage, obligation or agreement
          created by or arising out of this Indenture or the issuance of
          the Bonds, and further that neither the Bonds, nor the premium,
          if any, or interest thereon, nor any such obligation or agreement
          of the Pollution Control Corporation shall be construed to
          constitute an indebtedness of the County of Coconino, Arizona or
          the State of Arizona within the meaning of any constitutional or
          statutory provisions whatsoever.  The Bonds and the interest and
          premium, if any, thereon shall be limited obligations of the
          Pollution Control Corporation payable solely from the Receipts
          and Revenues of the Pollution Control Corporation from the Loan
          Agreement and the other moneys pledged therefor.

             The Pollution Control Corporation shall promptly cause to be
          paid, solely from the sources stated herein, the principal of and
          premium, if any, and interest on every Bond issued under this
          Indenture at the place, on the dates and in the manner provided
          herein and in said Bonds according to the true intent and meaning
          thereof.

             Section 7.02.    Performance of Covenants of the Pollution
          Control Corporation; Representations.  The Pollution Control
          Corporation shall faithfully perform at all times any and all
          covenants, undertakings, stipulations and provisions contained in
          this Indenture, in any and every Bond executed, authenticated and
          delivered hereunder, and in all proceedings pertaining thereto. 
          The Pollution Control Corporation represents that it is duly
          authorized under the Constitution and laws of the State of
          Arizona to issue the Bonds authorized hereby, to enter into the
          Loan Agreement and this Indenture, and to pledge and assign to
          the Trustee the Trust Estate, and that the Bonds in the hands of
          the Owners thereof are and will be valid and binding limited
          obligations of the Pollution Control Corporation.

             Section 7.03.    Maintenance of Rights and Powers; Compliance
          with Laws.  The Pollution Control Corporation shall at all times
          use its best efforts to maintain its corporate existence or
          assure the assumption of its obligations under this Indenture by
          any public body succeeding to its powers under the Act; and it
          shall at all times use its best efforts to comply with all valid
          acts, rules, regulations, orders and directions of any
          legislative, executive, administrative or judicial body known to
          it to be applicable to the Loan Agreement and this Indenture.

             Section 7.04.    Enforcement of Obligations of the Company;
          Amendments.  Upon receipt of written notification from the
          Trustee, the Pollution Control Corporation shall cooperate with
          the Trustee in enforcing the obligation of the Company to pay or
          cause to be paid all the payments and other costs and charges
          payable by the Company under the Loan Agreement.  The Pollution
          Control Corporation shall not enter into any agreement with the
          Company amending the Loan Agreement without the prior written
          consent of the Trustee and compliance with Sections 12.06 and
          12.07 of this Indenture (a revision to Exhibit A to the Loan
          Agreement not being deemed an amendment for purposes of this
          Section).

             Section 7.05.    Further Instruments.  The Pollution Control
          Corporation shall, upon the reasonable request of the Trustee,
          from time to time execute and deliver such further instruments
          and take such further action as may be reasonable and as may be
          required to carry out the purposes of this Indenture; provided,
          however, that no such instruments or actions shall pledge the
          credit or taxing power of the State of Arizona, the County of
          Coconino, the Pollution Control Corporation or any other
          political subdivision of said State.

             Section 7.06.    No Disposition of Trust Estate.  Except as
          permitted by this Indenture, the Pollution Control Corporation
          shall not sell, lease, pledge, assign or otherwise dispose of or
          encumber its interest in the Trust Estate and will promptly pay
          or cause to be discharged or make adequate provision to discharge
          any lien or charge on any part thereof not permitted hereby.

             Section 7.07.    Financing Statements.  The Pollution Control
          Corporation and the Trustee shall cooperate with the Company in
          causing appropriate financing statements and continuation
          statements, naming the Trustee as pledgee of the Receipts and
          Revenues of the Pollution Control Corporation from the Loan
          Agreement and of the other moneys pledged under the Indenture for
          the payment of the principal of and premium, if any, and interest
          on the Bonds, and as pledgee and assignee of the balance of the
          Trust Estate, and the Pollution Control Corporation shall
          cooperate with the Trustee and the Company in causing appropriate
          continuation statements to be duly filed and recorded in the
          appropriate state and county offices as required by the
          provisions of the Uniform Commercial Code or other similar law as
          adopted in the State of Arizona and any other applicable
          jurisdiction, as from time to time amended, in order to perfect
          and maintain the security interests created by this Indenture.

             Section 7.08.    Tax Covenants; Rebate Fund.  (a)  The
          Pollution Control Corporation covenants for the benefit of all
          Owners from time to time of the Bonds that it will not directly
          or indirectly use or (to the extent within its control), permit
          the use of, the proceeds of any of the Bonds or any other funds
          of the Pollution Control Corporation, or take or omit to take any
          other action, if and to the extent that such use, or the taking
          or omission to take such action, would cause any of the Bonds to
          be "arbitrage bonds" within the meaning of Section 148 of the
          Code or otherwise subject to federal income taxation by reason of
          Sections 103 and 141 through 150 of the Code or Section 103 of
          the 1954 Code, as applicable, and any applicable regulations
          promulgated thereunder.  To that end the Pollution Control
          Corporation covenants to comply with all covenants set forth in
          the Tax Agreement, which is hereby incorporated herein by
          reference as though fully set forth herein.

             (b)  The Trustee shall establish and maintain a fund separate
          from any other fund established and maintained hereunder
          designated the "Coconino County, Arizona Pollution Control
          Corporation Pollution Control Revenue Bonds, 1997 Series A
          (Tucson Electric Power Company Navajo Project) Rebate Fund"
          (herein called the "Rebate Fund") in accordance with the
          provisions of the Tax Agreement.  Within the Rebate Fund, the
          Trustee shall maintain such accounts as shall be directed by the
          Company in order for the Pollution Control Corporation and the
          Company to comply with the provisions of the Tax Agreement. 
          Subject to the transfer provisions provided in paragraph (c)
          below, all money at any time deposited in the Rebate Fund shall
          be held by the Trustee in trust, to the extent required to
          satisfy the Rebate Requirement (as defined in the Tax Agreement),
          for payment to the United States of America, and neither the
          Company, the Pollution Control Corporation or the Owners shall
          have any rights in or claim to such moneys.  All amounts
          deposited into or on deposit in the Rebate Fund shall be governed
          by this Section 7.08, by Section 6.04 of the Loan Agreement and
          by the Tax Agreement.  The Trustee shall conclusively be deemed
          to have complied with such provisions if it follows the
          directions of the Company, including supplying all necessary
          information in the manner set forth in the Tax Agreement, and
          shall not be required to take any actions thereunder in the
          absence of written directions from the Company.

             (c)  Upon receipt of the Company's written instructions, the
          Trustee shall remit part or all of the balances in the Rebate
          Fund to the United States of America, as so directed.  In
          addition, if the Company so directs, the Trustee shall deposit
          moneys into or transfer moneys out of the Rebate Fund from or
          into such accounts or funds as directed by the Company's written
          directions.  Any funds remaining in the Rebate Fund after all of
          the Bonds shall have been paid and any Rebate Requirement shall
          have been satisfied, or provision therefor reasonably
          satisfactory to the Trustee shall have been made, shall be
          withdrawn and remitted to the Company.

             (d)  Notwithstanding any provision of this Indenture, the
          obligation to remit the Rebate Requirement to the United States
          of America and to comply with all other requirements of this
          Section 7.08, Section 6.04 of the Loan Agreement and the Tax
          Agreement shall survive the payment of the Bonds and the
          satisfaction and discharge of this Indenture.

             Section 7.09.    Notices of Trustee.  The Trustee shall give
          notice to both the Pollution Control Corporation and the Company
          whenever it is required hereby to give notice to either and,
          additionally, shall furnish to the Pollution Control Corporation
          and the Company copies of any Notice by Mail or Publication given
          by it pursuant to any provision hereof.


                                     ARTICLE VIII

                                      DEFEASANCE

             Section 8.01.    Defeasance.  If the Pollution Control
          Corporation shall pay or cause to be paid to the Owner of any
          Bond secured hereby the principal of and premium, if any, and
          interest due and payable, and thereafter to become due and
          payable, upon such Bond or any portion of such Bond in the
          principal amount of $5,000 or any integral multiple thereof, such
          Bond or portion thereof shall cease to be entitled to any lien,
          benefit or security under this Indenture.  If the Pollution
          Control Corporation shall pay or cause to be paid to the Owners
          of all the Bonds secured hereby the principal of and premium, if
          any, and interest due and payable, and thereafter to become due
          and payable, thereon, and shall pay or cause to be paid all other
          sums payable hereunder including, without limitation, amounts
          payable pursuant to Section 10.04 hereof, then, and in that case,
          the right, title and interest of the Trustee in and to the Trust
          Estate shall thereupon cease, terminate and become void.  In such
          event, the Trustee shall assign, transfer and turn over to the
          Company the Trust Estate, including, without limitation, any
          surplus in the Bond Fund and any balance remaining in any other
          fund created under this Indenture.

             All or any portion of Outstanding Bonds or portions of Bonds
          in principal amounts of $5,000 or any integral multiple thereof,
          shall prior to the maturity or redemption date thereof be deemed
          to have been paid within the meaning and with the effect
          expressed in this Article VIII, and the entire indebtedness of
          the Pollution Control Corporation with respect thereof shall be
          satisfied and discharged, when

                    (a) in the event said Bonds or portions thereof have
             been selected for redemption in accordance with Section 3.02
             hereof, the Trustee shall have given, or the Company shall
             have given to the Trustee in form satisfactory to it
             irrevocable instructions to give, on a date in accordance with
             the provisions of Section 3.03 hereof, notice of redemption of
             such Bonds or portions thereof,

                    (b) there shall have been deposited with the Trustee
             either moneys in an amount which shall be sufficient, or
             Government Obligations which shall not contain provisions
             permitting the redemption thereof at the option of the issuer,
             the principal of and the interest on which, when due, and
             without regard to any reinvestment thereof, will provide
             moneys which, together with the moneys, if any, deposited with
             or held by the Trustee, shall be sufficient, to pay when due
             the principal of and premium, if any, and interest due and to
             become due on said Bonds or portions thereof on and prior to
             the redemption date or maturity date thereof, as the case may
             be, and 

                    (c) in the event said Bonds or portions thereof do not
             mature and are not to be redeemed within the next succeeding
             sixty (60) days, the Company shall have given the Trustee in
             form satisfactory to it irrevocable instructions to give, as
             soon as practicable in the same manner as a notice of
             redemption is given pursuant to Section 3.03 hereof, a notice
             to the Owners of said Bonds or portions thereof that the
             deposit required by clause (b) above has been made with the
             Trustee and that said Bonds or portions thereof are deemed to
             have been paid in accordance with this Article VIII and
             stating the maturity or redemption date upon which moneys are
             to be available for the payment of the principal of and
             premium, if any, and interest on said Bonds or portions
             thereof.

             Neither the Government Obligations nor moneys deposited with
          the Trustee pursuant to this Article VIII nor principal or
          interest payments on any such Government Obligations shall be
          withdrawn or used for any purpose other than, and such Government
          Obligations, moneys and principal or interest payments shall be
          held in trust for, the payment of the principal of and premium,
          if any, and interest on said Bonds or portions thereof; provided,
          that any cash received from such principal or interest payments
          on such Government Obligations deposited with the Trustee, if not
          then needed for such purposes, shall, to the extent practicable,
          be invested in Government Obligations of the type described in
          clause (b) of the preceding paragraph maturing at times and in
          amounts sufficient to pay when due the principal of and premium,
          if any, and interest to become due on said Bonds or portions
          thereof on and prior to such redemption date or maturity date
          thereof, as the case may be, and interest earned from such
          reinvestments shall be paid over to the Company, as received by
          the Trustee, free and clear of any trust, lien or pledge
          hereunder.  If payment of less than all the Bonds is to be
          provided for in the manner and with the effect provided in this
          Article VIII, the Trustee shall select such Bonds or portions of
          Bonds in the manner specified by Section 3.02 hereof for
          selection for redemption of less than all Bonds in the principal
          amount designated to the Trustee by the Company.  At or prior to
          the time of the deposit of any Government Obligations with the
          Trustee pursuant to this Section 8.01, the Company shall provide
          the Trustee with a certificate of an accountant or an accounting
          firm as to the sufficiency of such Government Obligations to pay
          when due the principal of and premium, if any, and interest due
          and to become due as set forth in clause (b) of the preceding
          paragraph.


                                      ARTICLE IX

                                DEFAULTS AND REMEDIES

             Section 9.01.    Events of Default.  Each of the following
          events shall constitute and is referred to in this Indenture as
          an "Event of Default":

                    (a) a failure to pay the principal of or premium, if
             any, on any of the Bonds when the same shall become due and
             payable at maturity, upon redemption or otherwise;

                    (b) a failure to pay an installment of interest on any
             of the Bonds after such interest shall have become due and
             payable for a period of thirty (30) days;

                    (c) a failure by the Pollution Control Corporation to
             observe and perform any covenant, condition, agreement or
             provision (other than as specified in clauses (a) and (b) of
             this Section 9.01) contained in the Bonds or in this Indenture
             on the part of the Pollution Control Corporation to be
             observed or performed, which failure shall continue for a
             period of sixty (60) days after written notice, specifying
             such failure and requesting that it be remedied, shall have
             been given to the Pollution Control Corporation and the
             Company by the Trustee, which may give such notice in its
             discretion and which shall give such notice at the written
             request of Owners of not less than 33% in principal amount of
             the Bonds then Outstanding, unless the Trustee, or the Trustee
             and Owners of a principal amount of Bonds not less than the
             principal amount of Bonds the Owners of which requested that
             such notice be given, as the case may be, shall agree in
             writing to an extension of such period prior to its
             expiration; provided, however, that the Trustee, or the
             Trustee and the Owners of such principal amount of Bonds, as
             the case may be, shall be deemed to have agreed to an
             extension of such period if corrective action is initiated by
             the Pollution Control Corporation, or the Company on behalf of
             the Pollution Control Corporation, within such period and is
             being diligently pursued.

             Upon the occurrence and continuance of any Event of Default
          described in clause (a) and (b) of the preceding paragraph, the
          Trustee may, and at the written request of Owners of not less
          than 33% in principal amount of Bonds then Outstanding shall, by
          written notice to the Pollution Control Corporation and the
          Company, declare the Bonds to be immediately due and payable,
          whereupon they shall, without further action, become and be
          immediately due and payable, anything in this Indenture or in the
          Bonds to the contrary notwithstanding, and the Trustee shall give
          notice thereof by Mail to all Owners of Outstanding Bonds.

             The provisions of the preceding paragraph, however, are
          subject to the condition that if, after the principal of the
          Bonds shall have been so declared to be due and payable, and
          before any judgment or decree for the payment of the moneys due
          shall have been obtained or entered as hereinafter provided, the
          Pollution Control Corporation shall cause to be deposited with
          the Trustee a sum sufficient to pay all matured installments of
          interest upon all Bonds and the principal of any and all Bonds
          which shall have become due otherwise than by reason of such
          declaration (with interest upon such principal and, to the extent
          permissible by law, on overdue installments of interest, at the
          rate per annum borne by the Bonds) and such amounts as shall be
          sufficient to cover reasonable compensation and reimbursement of
          expenses payable to the Trustee and any predecessor Trustee, and
          all Events of Default hereunder other than nonpayment of the
          principal of Bonds which shall have become due by said
          declaration shall have been remedied, then, in every such case,
          such Event of Default shall be deemed waived and such declaration
          and its consequences rescinded and annulled, and the Trustee
          shall promptly give written notice of such waiver, rescission and
          annulment to the Pollution Control Corporation and the Company,
          and, if notice of the acceleration of the Bonds shall have been
          given to the Owners of the Bonds, shall give notice thereof by
          Mail to all Owners of Outstanding Bonds; but no such waiver,
          rescission and annulment shall extend to or affect any subsequent
          Event of Default or impair any right or remedy consequent
          thereon.

             Section 9.02.    Remedies.  Upon the occurrence and
          continuance of any Event of Default, then and in every such case
          the Trustee in its discretion may, and upon the written request
          of Owners of not less than a majority in principal amount of the
          Bonds then Outstanding and receipt of indemnity to its
          satisfaction shall, in its own name and as the Trustee of an
          express trust:

                    (a) by mandamus, or other suit, action or proceeding at
             law or in equity, enforce all rights of the Owners of the
             Bonds, and require the Pollution Control Corporation or the
             Company to carry out any agreements with or for the benefit of
             such Owners and to perform its or their duties under the Act,
             the Loan Agreement and this Indenture;

                    (b) bring suit upon the Bonds; or

                    (c) by action or suit in equity enjoin any acts or
             things which may be unlawful or in violation of the rights of
             the Owners of the Bonds.

             Section 9.03.    Restoration to Former Position.  In the event
          that any proceeding taken by the Trustee to enforce any right
          under this Indenture shall have been discontinued or abandoned
          for any reason, or shall have been determined adversely to the
          Trustee, then the Pollution Control Corporation, the Trustee and
          the Owners shall be restored, subject to any determination in
          such proceeding, to their former positions and rights hereunder,
          respectively, and all rights, remedies and powers of the Trustee
          shall continue as though no such proceeding had been taken.

             Section 9.04.    Owners' Right to Direct Proceedings. 
          Anything in this Indenture to the contrary notwithstanding,
          Owners of a majority in principal amount of the Bonds then
          Outstanding hereunder shall have the right, by an instrument in
          writing executed and delivered to the Trustee, to direct the
          time, method and place of conducting all remedial proceedings
          available to the Trustee under this Indenture or exercising any
          trust or power conferred on the Trustee by this Indenture;
          provided, however, that such direction shall not be otherwise
          than in accordance with law and the provisions of this Indenture
          and that the Trustee shall have the right (but not the
          obligation) to decline to follow any such direction if the
          Trustee, being advised by counsel, shall determine that the
          action or proceeding so directed may not lawfully be taken, or if
          the Trustee in good faith shall determine that the action or
          proceedings so directed would involve the Trustee in personal
          liability or if the Trustee in good faith shall so determine that
          the actions or forbearances specified in or pursuant to such
          direction would be unduly prejudicial to the interests of Owners
          not joining in the giving of said direction, it being understood
          that the Trustee shall have no duty to ascertain whether or not
          such actions or forbearances are unduly prejudicial to such
          Owners.

             Section 9.05.    Limitation on Owners' Right to Institute
          Proceedings.  No Owner of Bonds shall have any right to institute
          any suit, action or proceeding in equity or at law for the
          execution of any trust or power hereunder, or any other remedy
          hereunder or on said Bonds, unless such Owner previously shall
          have given to the Trustee written notice of an Event of Default
          as hereinabove provided and unless the Owners of not less than a
          majority in principal amount of the Bonds then Outstanding shall
          have made written request of the Trustee so to do, after the
          right to institute said suit, action or proceeding shall have
          accrued, and shall have afforded the Trustee a reasonable
          opportunity to proceed to institute the same in either its or
          their name, and unless there also shall have been offered to the
          Trustee security and indemnity satisfactory to it against the
          costs, expenses and liabilities to be incurred therein or
          thereby, and the Trustee shall not have complied with such
          request within a reasonable time; and such notification, request
          and offer of indemnity are hereby declared in every such case, at
          the option of the Trustee, to be conditions precedent to the
          institution of said suit, action or proceeding; it being
          understood and intended that no one or more of the Owners of the
          Bonds shall have any right in any manner whatever by his or their
          action to affect, disturb or prejudice the security of this
          Indenture, or to enforce any right hereunder or under the Bonds,
          except in the manner herein provided, and that all suits, actions
          and proceedings at law or in equity shall be instituted, had and
          maintained in the manner herein provided and for the equal
          benefit of all Owners of the Bonds.

             Section 9.06.    No Impairment of Right to Enforce Payment. 
          Notwithstanding any other provision in this Indenture, the right
          of any Owner of a Bond to receive payment of the principal of and
          premium, if any, and interest on such Bond, on or after the
          respective due dates expressed therein, or to institute suit for
          the enforcement of any such payment on or after such respective
          dates, shall not be impaired or affected without the consent of
          such Owner.

             Section 9.07.    Proceedings by Trustee without Possession of
          Bonds.  All rights of action under this Indenture or under any of
          the Bonds secured hereby which are enforceable by the Trustee may
          be enforced by it without the possession of any of the Bonds, or
          the production thereof on the trial or other proceedings relative
          thereto, and any such suit, action or proceeding instituted by
          the Trustee shall be brought in its name for the equal and
          ratable benefit of the Owners of the Bonds, subject to the
          provisions of this Indenture.

             Section 9.08.    No Remedy Exclusive.  No remedy herein
          conferred upon or reserved to the Trustee or to the Owners of the
          Bonds is intended to be exclusive of any other remedy or
          remedies, and each and every such remedy shall be cumulative, and
          shall be in addition to every other remedy given hereunder or
          under the Loan Agreement, now or hereafter existing at law or in
          equity or by statute.

             Section 9.09.    No Waiver of Remedies.  No delay or omission
          of the Trustee or of any Owner of a Bond to exercise any right or
          power accruing upon any default shall impair any such right or
          power or shall be construed to be a waiver of any such default,
          or an acquiescence therein; and every power and remedy given by
          this Article IX to the Trustee and to the Owners of the Bonds,
          respectively, may be exercised from time to time and as often as
          may be deemed expedient.

             Section 9.10.    Application of Moneys.  Any moneys received
          by the Trustee, by any receiver or by any Owner of a Bond
          pursuant to any right given or action taken under the provisions
          of this Article IX, after payment of the costs and expenses of
          the proceedings resulting in the collection of such moneys and of
          all amounts due to the Trustee and any predecessor Trustee under
          Section 10.04 hereof, shall be deposited in the Bond Fund and all
          moneys so deposited in the Bond Fund during the continuance of an
          Event of Default (other than moneys for the payment of Bonds
          which had matured or otherwise become payable prior to such Event
          of Default or for the payment of interest due prior to such Event
          of Default) shall be applied as follows:

                    (a) Unless the principal of all the Bonds shall have
             become due and payable, all such moneys shall be applied (i)
             first, to the payment to the persons entitled thereto of all
             installments of interest then due on the Bonds, with interest
             on overdue installments, if lawful, at the rate per annum
             borne by the Bonds, in the order of maturity of the
             installments of such interest and, if the amount available
             shall not be sufficient to pay in full any particular
             installment of interest, then to the payment ratably,
             according to the amounts due on such installment, and (ii)
             second, to the payment to the persons entitled thereto of the
             unpaid principal of any of the Bonds which shall have become
             due (other than Bonds called for redemption for the payment of
             which money is held pursuant to the provisions of this
             Indenture), with interest on such Bonds at their rate from the
             respective dates upon which they became due and, if the amount
             available shall not be sufficient to pay in full Bonds due on
             any particular date, together with such interest, then to the
             payment ratably, according to the amount of principal and
             interest due on such date, in each case to the persons
             entitled thereto, without any discrimination or privilege.

                    (b) If the principal of all the Bonds shall have become
             due and payable, all such moneys shall be applied to the
             payment of the principal and interest then due and unpaid upon
             the Bonds, with interest on overdue interest and principal, as
             aforesaid, without preference or priority of principal over
             interest or of interest over principal, or of any installment
             of interest over any other installment of interest, or of any
             Bond over any other Bond, ratably, according to the amounts
             due respectively for principal and interest, to the persons
             entitled thereto without any discrimination or privilege.

                    (c) If the principal of all the Bonds shall have become
             due and payable, and if acceleration of the maturity of the
             Bonds by reason of such Event of Default shall thereafter have
             been rescinded and annulled under the provisions of this
             Article IX, then, subject to the provisions of clause (b) of
             this Section 9.10 which shall be applicable in the event that
             the principal of all the Bonds shall later become due and
             payable, the moneys shall be applied in accordance with the
             provisions of clause (a) of this Section 9.10.

             Section 9.11.    Severability of Remedies.  It is the purpose
          and intention of this Article IX to provide rights and remedies
          to the Trustee and the Owners which may be lawfully granted under
          the provisions of the Act, but should any right or remedy herein
          granted be held to be unlawful, the Trustee and the Owners shall
          be entitled, as above set forth, to every other right and remedy
          provided in this Indenture and by law.


                                      ARTICLE X

                TRUSTEE; PAYING AGENT AND CO-PAYING AGENTS; REGISTRAR

             Section 10.01.   Acceptance of Trusts.  The Trustee hereby
          accepts and agrees to execute the trusts hereby created, but only
          upon the additional terms set forth in this Article X, to all of
          which the Pollution Control Corporation agrees and the respective
          Owners agree by their acceptance of delivery of any of the Bonds.

             Section 10.02.   No Responsibility for Recitals.  The
          recitals, statements and representations contained in this
          Indenture or in the Bonds, save only the Trustee's authentication
          upon the Bonds, are not made by the Trustee, and the Trustee does
          not assume, and shall not have, any responsibility or obligation
          for the correctness of any thereof.  The Trustee makes no
          representation as to the validity or sufficiency of this
          Indenture or the Bonds.

             Section 10.03.   Limitations on Liability.  The Trustee may
          execute any of the trusts or powers hereof and perform the duties
          required of it hereunder by or through attorneys, agents,
          receivers, or employees, and shall be entitled to advice of
          counsel concerning all matters of trust and its duty hereunder,
          and the Trustee shall not be answerable for the default or
          misconduct of any such attorney, agent, receiver, or employee
          selected by it with reasonable care.  The Trustee shall not be
          answerable for the exercise of any discretion or power under this
          Indenture or for anything whatsoever in connection with the trust
          created hereby, except only for its own negligence or bad faith.

             Anything in this Indenture to the contrary notwithstanding,
          the Trustee shall in no event be required to expend or risk its
          own funds or otherwise incur personal financial liability in the
          performance of any of its duties or in the exercise of any of its
          rights or powers, if there shall be reasonable grounds for
          believing that the repayment of such funds or adequate indemnity
          against such liability is not reasonably assured to it.

             Section 10.04.   Compensation, Expenses and Advances.  The
          Trustee, the Paying Agent and any Co-Paying Agent and the
          Registrar under this Indenture shall be entitled to reasonable
          compensation for their services rendered hereunder (not limited
          by any provision of law regarding the compensation of the trustee
          of an express trust) and to reimbursement for their actual
          out-of-pocket expenses (including counsel fees) reasonably
          incurred in connection therewith except as a result of their
          negligence or bad faith, including, without limitation,
          compensation for any services rendered, and reimbursement for any
          expenses incurred, at and subsequent to the time the Bonds are
          deemed to have been paid in accordance with Article VIII hereof. 
          If the Pollution Control Corporation shall fail to perform any of
          the covenants or agreements contained in this Indenture, other
          than the covenants or agreements in respect of the payment of the
          principal of and premium, if any, and interest on the Bonds, the
          Trustee may, in its uncontrolled discretion and without notice to
          the Owners of the Bonds, at any time and from time to time, make
          advances to effect performance of the same on behalf of the
          Pollution Control Corporation, but the Trustee shall be under no
          obligation so to do; and any and all such advances may bear
          interest at a rate per annum not exceeding the base rate then in
          effect for 90-day commercial loans by the Trustee or a commercial
          banking affiliate of the Trustee designated as such by the
          Trustee in the city in which is located the Principal Office of
          the Trustee (or such affiliate, as the case may be) to borrowers
          of the highest credit standing; but no such advance shall operate
          to relieve the Pollution Control Corporation from any default
          hereunder.  In Section 5.03 of the Loan Agreement, the Company
          has agreed that it will pay to the Trustee (including any
          predecessor Trustee), the Paying Agent and any Co-Paying Agent
          and the Registrar such compensation and reimbursement of expenses
          and advances, but the Company may, without creating a default
          hereunder, contest in good faith the reasonableness of any such
          services, expenses and advances.  If the Company shall have
          failed to make any payment to the Trustee or any predecessor
          Trustee under Section 5.03 of the Loan Agreement and such failure
          shall have resulted in an Event of Default under the Loan
          Agreement, the Trustee, and any predecessor Trustee, shall have,
          in addition to any other rights hereunder, a claim, prior to the
          claim of the Owners, for the payment of its compensation and the
          reimbursement of its expenses and any advances made by it, as
          provided in this Section 10.04, upon the moneys and obligations
          in the Bond Fund; provided, however, that neither the Trustee nor
          any predecessor Trustee shall have any such claim upon moneys or
          obligations deposited with or paid to the Trustee for the
          redemption or payment of Bonds which are deemed to have been paid
          in accordance with Article VIII hereof.

             In Section 5.04 of the Loan Agreement, the Company has agreed
          to indemnify the Trustee and any predecessor Trustee to the
          extent provided therein.

             Section 10.05.   Notice of Events of Default.  The Trustee
          shall not be required to take notice, or be deemed to have
          notice, of any default or Event of Default under this Indenture
          other than an Event of Default under clause (a) or (b) of the
          first paragraph of Section 9.01 hereof, unless an officer
          assigned by the Trustee to administer its corporate trust
          business has been specifically notified in writing of such
          default or Event of Default by Owners of at least 33% in
          principal amount of the Bonds then Outstanding.  The Trustee may,
          however, at any time, in its discretion, require of the Pollution
          Control Corporation and the Company full information and advice
          as to the performance of any of the covenants, conditions and
          agreements contained herein.

             Section 10.06.   Action by Trustee.  The Trustee shall be
          under no obligation to take any action in respect of any default
          or Event of Default hereunder or toward the execution or
          enforcement of any of the trusts hereby created, or to institute,
          appear in or defend any suit or other proceeding in connection
          therewith, unless requested in writing so to do by Owners of at
          least a majority in principal amount of the Bonds then
          Outstanding, and, if in its opinion such action may tend to
          involve it in expense or liability, unless furnished, from time
          to time as often as it may require, with security and indemnity
          satisfactory to it.  The foregoing provisions are intended only
          for the protection of the Trustee, and shall not affect any
          discretion or power given by any provisions of this Indenture to
          the Trustee to take action in respect of any default or Event of
          Default without such notice or request from the Owners of the
          Bonds, or without such security or indemnity.

             Section 10.07.   Good Faith Reliance.  The Trustee shall be
          protected and shall incur no liability in acting or proceeding in
          good faith upon any resolution, notice, telegram, telex,
          facsimile transmission, request, consent, waiver, certificate,
          statement, affidavit, voucher, bond, requisition or other paper
          or document which it shall in good faith believe to be genuine
          and to have been passed or signed by the proper board, body or
          person or to have been prepared and furnished pursuant to any of
          the provisions of this Indenture or the Loan Agreement, or upon
          the written opinion of any attorney, engineer, accountant or
          other expert believed by the Trustee to be qualified in relation
          to the subject matter, and the Trustee shall be under no duty to
          make any investigation or inquiry as to any statements contained
          or matters referred to in any such instrument, but may accept and
          rely upon the same as conclusive evidence of the truth and
          accuracy of such statements.  Neither the Trustee, the Paying
          Agent, any Co-Paying Agent nor the Registrar shall be bound to
          recognize any person as an Owner of a Bond or to take any action
          at his request unless the ownership of such Bond is proved as
          contemplated in Section 11.01 hereof.

             Section 10.08.   Dealings in Bonds and with the Pollution
          Control Corporation and the Company.  The Trustee, the Paying
          Agent, any Co-Paying Agent or the Registrar, in its individual or
          any other capacity, may in good faith buy, sell, own, hold and
          deal in any of the Bonds issued hereunder, and may join in any
          action which any Owner of a Bond may be entitled to take with
          like effect as if it did not act in any capacity hereunder.  The
          Trustee, the Paying Agent, any Co-Paying Agent or the Registrar,
          in its individual or any other capacity, either as principal or
          agent, may also engage in or be interested in any financial or
          other transaction with the Pollution Control Corporation or the
          Company, and may act as depositary, trustee, or agent for any
          committee or body of Owners of Bonds secured hereby or other
          obligations of the Pollution Control Corporation as freely as if
          it did not act in any capacity hereunder.

             Section 10.09.   Allowance of Interest.  The Trustee may, but
          shall not be obligated to, allow and credit interest upon any
          moneys which it may at any time receive under any of the
          provisions of this Indenture, at such rate, if any, as it
          customarily allows upon similar funds of similar size and under
          similar conditions.  All interest allowed on any such moneys
          shall be credited as provided in Articles IV and V with respect
          to interest on investments.

             Section 10.10.   Construction of Indenture.  The Trustee may
          construe any of the provisions of this Indenture insofar as the
          same may appear to be ambiguous or inconsistent with any other
          provision hereof, and any construction of any such provisions
          hereof by the Trustee in good faith shall be binding upon the
          Owners of the Bonds.

             Section 10.11.   Resignation of Trustee.  The Trustee may
          resign and be discharged of the trusts created by this Indenture
          by executing an instrument in writing resigning such trust and
          specifying the date when such resignation shall take effect, and
          filing the same with the President of the Pollution Control
          Corporation and with the Company, not less than forty-five (45)
          days before the date specified in such instrument when such
          resignation shall take effect, and by giving notice of such
          resignation by Mail to all Owners of Bonds.  Such resignation
          shall take effect on the later to occur of (i) the day specified
          in such instrument and notice, unless previously a successor
          Trustee shall have been appointed as hereinafter provided, in
          which event such resignation shall take effect immediately upon
          the appointment of such successor Trustee and (ii) the
          appointment of a successor Trustee.

             So long as no event which is, or after notice or lapse of
          time, or both, would become, an Event of Default shall have
          occurred and be continuing, if the Pollution Control Corporation
          shall have delivered to the Trustee (i) an instrument appointing
          a successor Trustee, effective as of a date specified therein and
          (ii) an instrument of acceptance of such appointment, effective
          as of such date, by such successor Trustee in accordance with
          Section 10.16, the Trustee shall be deemed to have resigned as
          contemplated in this Section, the successor Trustee shall be
          deemed to have been appointed pursuant to subsection (b) of
          Section 10.13 and such appointment shall be deemed to have been
          accepted as contemplated in Section 10.16, all as of such date,
          and all other provisions of this Article X shall be applicable to
          such resignation, appointment and acceptance except to the extent
          inconsistent with this paragraph.  The Pollution Control
          Corporation shall deliver any such instrument of appointment at
          the direction of the Company.

             Section 10.12.   Removal of Trustee.  The Trustee may be
          removed at any time by filing with the Trustee so removed, and
          with the Pollution Control Corporation and the Company, an
          instrument or instruments in writing, appointing a successor, or
          an instrument or instruments in writing, consenting to the
          appointment by the Pollution Control Corporation (at the
          direction of the Company) of a successor and accompanied by an
          instrument of appointment by the Pollution Control Corporation
          (at the direction of the Company) of such successor, and in any
          event executed by Owners of not less than a majority in principal
          amount of the Bonds then Outstanding, such filing to be made by
          any Owner of a Bond or his duly authorized attorney.

             Section 10.13.   Appointment of Successor Trustee.  (a) In
          case at any time the Trustee shall be removed, or be dissolved,
          or if its property or affairs shall be taken under the control of
          any state or federal court or administrative body because of
          insolvency or bankruptcy, or for any other reason, then a vacancy
          shall forthwith and ipso facto exist and a successor may be
          appointed, and in case at any time the Trustee shall resign or be
          deemed to have resigned, then a successor may be appointed, by
          filing with the Pollution Control Corporation and the Company an
          instrument in writing appointing such successor Trustee executed
          by Owners of not less than a majority in principal amount of
          Bonds then Outstanding.  Copies of such instrument shall be
          promptly delivered by the Pollution Control Corporation to the
          predecessor Trustee, to the Trustee so appointed and the Company.

             (b)  Until a successor Trustee shall be appointed by the
          Owners of the Bonds as herein authorized, the Pollution Control
          Corporation, shall appoint a successor Trustee as directed by the
          Company.  After any appointment by the Pollution Control
          Corporation, it shall cause notice of such appointment to be
          given by Mail to all Owners of Bonds.  Any new Trustee so
          appointed by the Pollution Control Corporation shall immediately
          and without further act be superseded by a Trustee appointed by
          the Owners of the Bonds in the manner above provided.


             (c)  No resignation or removal of the Trustee and no
          appointment of a successor Trustee pursuant to this Article shall
          become effective until the acceptance of appointment by the
          successor Trustee.

             Section 10.14.   Qualifications of Successor Trustee.  Every
          successor Trustee (a) shall be a bank or trust company duly
          organized under the laws of the United States or any state or
          territory thereof authorized by law to perform all the duties
          imposed upon it by this Indenture and (b) shall have (or the
          parent holding company of which shall have) a combined capital
          stock, surplus and undivided profits of at least $100,000,000 if
          there can be located, with reasonable effort, such an institution
          willing and able to accept the trust on reasonable and customary
          terms.

             Section 10.15.   Judicial Appointment of Successor Trustee. 
          In case at any time the Trustee shall resign and no appointment
          of a successor Trustee shall be made pursuant to the foregoing
          provisions of this Article X prior to the date specified in the
          notice of resignation as the date when such resignation is to
          take effect, the retiring Trustee may forthwith apply to a court
          of competent jurisdiction for the appointment of a successor
          Trustee.  If no appointment of a successor Trustee shall be made
          pursuant to the foregoing provisions of this Article X within six
          months after a vacancy shall have occurred in the office of
          Trustee, any Owner of a Bond may apply to any court of competent
          jurisdiction to appoint a successor Trustee.  Such court may
          thereupon, after such notice, if any, as it may deem proper and
          prescribe, appoint a successor Trustee.

             Section 10.16.   Acceptance of Trusts by Successor Trustee. 
          Any successor Trustee appointed hereunder shall execute,
          acknowledge and deliver to the Pollution Control Corporation an
          instrument accepting such appointment hereunder, and thereupon
          such successor Trustee, without any further act, deed or
          conveyance, shall become duly vested with all the estates,
          property, rights, powers, trusts, duties and obligations of its
          predecessor in the trust hereunder, with like effect as if
          originally named Trustee herein.  Upon request of such Trustee,
          such predecessor Trustee and the Pollution Control Corporation
          shall execute and deliver an instrument transferring to such
          successor Trustee all the estates, property, rights, powers and
          trusts hereunder of such predecessor Trustee and, subject to the
          provisions of Section 10.04 hereof, such predecessor Trustee
          shall pay over to the successor Trustee all moneys and other
          assets at the time held by it hereunder.

             Section 10.17.   Successor by Merger or Consolidation.  Any
          corporation or association into which any Trustee hereunder may
          be merged or converted or with which it may be consolidated, or
          any corporation or association resulting from any merger or
          consolidation to which any Trustee hereunder shall be a party or
          any corporation or association succeeding to the corporate trust
          business of the Trustee, shall be the successor Trustee under
          this Indenture, without the execution or filing of any paper or
          any further act on the part of the parties hereto, anything in
          this Indenture to the contrary notwithstanding.

             If, at the time any such successor to the Trustee shall
          succeed to the trusts created by this Indenture, any of the Bonds
          shall have been authenticated but not delivered, such successor
          Trustee may adopt the certificate of authentication of any
          predecessor Trustee and deliver such Bonds so authenticated; and
          if at that time, any of the Bonds shall not have been
          authenticated, such successor Trustee may authenticate such Bonds
          either in the name of any such predecessor hereunder or in the
          name of such successor; and, in all such cases, such certificate
          of authentication shall have the full force which it is anywhere
          in the Bonds or in this Indenture provided that the certificate
          of authentication of the Trustee shall have; provided, however,
          that the right to adopt the certificate of authentication of any
          predecessor Trustee or to authenticate Bonds in the name of any
          predecessor Trustee shall apply only to its successor or
          successors by merger, conversion or consolidation.

             Section 10.18.   Standard of Care.  Notwithstanding any other
          provisions of this Article X, the Trustee shall, during the
          existence of an Event of Default of which the Trustee has actual
          notice, exercise such of the rights and powers vested in it by
          this Indenture and use the same degree of skill and care in their
          exercise as a prudent man would use and exercise under the
          circumstances in the conduct of his own affairs.

             Section 10.19.   Notice to Owners of Bonds of Event of
          Default.  If an Event of Default occurs of which the Trustee by
          Section 10.05 hereof is required to take notice and deemed to
          have notice, or any other Event of Default occurs of which the
          Trustee has been specifically notified in accordance with Section
          10.05 hereof, and any such Event of Default shall continue for at
          least two days after the Trustee acquires actual notice thereof,
          unless the Trustee shall have theretofore given a notice of
          acceleration pursuant to Section 9.01 hereof, the Trustee shall
          give Notice by Mail to all Owners of Outstanding Bonds.

             Section 10.20.   Intervention in Litigation of the Pollution
          Control Corporation.  In any judicial proceeding to which the
          Pollution Control Corporation is a party and which in the opinion
          of the Trustee and its counsel has a substantial bearing on the
          interests of the Owners of Bonds, the Trustee may intervene on
          behalf of the Owners of the Bonds and shall, upon receipt of
          indemnity satisfactory to it, do so if requested in writing by
          Owners of at least a majority in principal amount of the Bonds
          then Outstanding if permitted by the court having jurisdiction in
          the premises.

             Section 10.21.   Paying Agent; Co-Paying Agents.  The
          Pollution Control Corporation shall, with the approval of the
          Company, appoint the Paying Agent for the Bonds and may at any
          time or from time to time, with the approval of the Company,
          appoint one or more Co-Paying Agents for the Bonds, subject to
          the conditions set forth in Section 10.22 hereof.  The Paying
          Agent and each Co-Paying Agent shall designate to the Trustee its
          Principal Office and signify its acceptance of the duties and
          obligations imposed upon it hereunder by a written instrument of
          acceptance delivered to the Pollution Control Corporation and the
          Trustee in which such Paying Agent or Co-Paying Agent will agree,
          particularly:

                    (a) to hold all sums held by it for the payment of the
             principal of and premium, if any, or interest on Bonds in
             trust for the benefit of the Owners of the Bonds until such
             sums shall be paid to such Owners or otherwise disposed of as
             herein provided;

                    (b) to keep such books and records as shall be
             consistent with prudent industry practice, to make such books
             and records available for inspection by the Pollution Control
             Corporation, the Trustee and the Company at all reasonable
             times and, in the case of a Co-Paying Agent, to promptly
             furnish copies of such books and records to the Paying Agent;
             and

                    (c) in the case of a Co-Paying Agent, upon the request
             of the Paying Agent, to forthwith deliver to the Paying Agent
             all sums so held in trust by such Co-Paying Agent.

             The Pollution Control Corporation shall cooperate with the
          Trustee and the Company to cause the necessary arrangements to be
          made and to be thereafter continued whereby funds derived from
          the sources specified in Sections 4.03 and 4.04 hereof will be
          made available to the Paying Agent and each Co-Paying Agent for
          the payment when due of the principal of, premium, if any, and
          interest on the Bonds.

             Section 10.22.   Qualifications of Paying Agent and Co-Paying
          Agents; Resignation; Removal.  The Paying Agent and any Co-Paying
          Agent shall be a corporation or association duly organized under
          the laws of the United States of America or any state or
          territory thereof, having a combined capital stock, surplus and
          undivided profits of at least $15,000,000 and authorized by law
          to perform all the duties imposed upon it by this Indenture.  The
          Paying Agent and any Co-Paying Agent may at any time resign and
          be discharged of the duties and obligations created by this
          Indenture by giving at least sixty (60) days' notice to the
          Pollution Control Corporation, the Company and the Trustee.  The
          Paying Agent and any Co-Paying Agent may be removed at any time,
          at the direction of the Company, by an instrument, signed by the
          Pollution Control Corporation, filed with the Paying Agent or
          such Co-Paying Agent, as the case may be, and with the Trustee.

             In the event of the resignation or removal of the Paying Agent
          or any Co-Paying Agent, the Paying Agent or such Co-Paying Agent,
          as the case may be, shall pay over, assign and deliver any moneys
          held by it in such capacity to its successor or, if there be no
          successor, to the Trustee.

             In the event that the Pollution Control Corporation shall fail
          to appoint a Paying Agent hereunder, or in the event that the
          Paying Agent shall resign or be removed, or be dissolved, or if
          the property or affairs of the Paying Agent shall be taken under
          the control of any state or federal court or administrative body
          because of bankruptcy or insolvency, or for any other reason, and
          the Pollution Control Corporation shall not have appointed its
          successor as Paying Agent, the Trustee shall ipso facto be deemed
          to be the Paying Agent for all purposes of this Indenture until
          the appointment by the Pollution Control Corporation of the
          Paying Agent or successor Paying Agent, as the case may be.

             Upon the appointment of a successor Paying Agent, the Trustee
          shall give notice thereof by Mail to all Owners of Bonds.

             Section 10.23.   Registrar.  The Pollution Control Corporation
          shall, with the approval of the Company, appoint the Registrar
          for the Bonds, subject to the conditions set forth in Section
          10.24 hereof.  The Registrar shall designate to the Trustee its
          Principal Office and signify its acceptance of the duties imposed
          upon it hereunder by a written instrument of acceptance delivered
          to the Pollution Control Corporation and the Trustee in which
          such Registrar will agree, particularly, to keep such books and
          records as shall be consistent with prudent industry practice and
          to make such books and records available for inspection by the
          Pollution Control Corporation, the Trustee and the Company at all
          reasonable times.

             The Pollution Control Corporation shall cooperate with the
          Trustee and the Company to cause the necessary arrangements to be
          made and to be thereafter continued whereby Bonds, executed by
          the Pollution Control Corporation and authenticated by the
          Trustee, shall be made available for exchange, registration and
          registration of transfer at the Principal Office of the
          Registrar.  The Pollution Control Corporation shall cooperate
          with the Trustee, the Registrar and the Company to cause the
          necessary arrangements to be made and thereafter continued
          whereby the Paying Agent and any Co-Paying Agent shall be
          furnished such records and other information, at such times, as
          shall be required to enable the Paying Agent and such Co-Paying
          Agent to perform the duties and obligations imposed upon them
          hereunder.

             Section 10.24.   Qualifications of Registrar; Resignation;
          Removal.  The Registrar shall be a corporation or association
          duly organized under the laws of the United States of America or
          any state or territory thereof, having a combined capital stock,
          surplus and undivided profits of at least $15,000,000 and
          authorized by law to perform all the duties imposed upon it by
          this Indenture.  The Registrar may at any time resign and be
          discharged of the duties and obligations created by this
          Indenture by giving at least sixty (60) days' notice to the
          Pollution Control Corporation, the Trustee and the Company.  The
          Registrar may be removed at any time, at the direction of the
          Company, by an instrument signed by the Pollution Control
          Corporation filed with the Registrar and the Trustee.

             In the event of the resignation or removal of the Registrar,
          the Registrar shall deliver any Bonds held by it in such capacity
          to its successor or, if there be no successor, to the Trustee.

             In the event that the Pollution Control Corporation shall fail
          to appoint a Registrar hereunder, or in the event that the
          Registrar shall resign or be removed, or be dissolved, or if the
          property or affairs of the Registrar shall be taken under the
          control of any state or federal court or administrative body
          because of bankruptcy or insolvency, or for any other reason, and
          the Pollution Control Corporation shall not have appointed its
          successor as Registrar, the Trustee shall ipso facto be deemed to
          be the Registrar for all purposes of this Indenture until the
          appointment by the Pollution Control Corporation of the Registrar
          or successor Registrar, as the case may be.

             Upon the appointment of a successor Registrar, the Trustee
          shall give notice thereof by Mail to all Owners of Bonds.

             Section 10.25.   Several Capacities.  Anything herein to the
          contrary notwithstanding, the same entity may serve hereunder as
          the Trustee, the Paying Agent or a Co-Paying Agent and the
          Registrar, and in any combination of such capacities to the
          extent permitted by law.


                                      ARTICLE XI

                   EXECUTION OF INSTRUMENTS BY OWNERS OF BONDS AND
                             PROOF OF OWNERSHIP OF BONDS

             Section 11.01.   Execution of Instruments; Proof of Ownership. 
          Any request, direction, consent or other instrument in writing,
          whether or not required or permitted by this Indenture to be
          signed or executed by Owners of the Bonds, may be in any number
          of concurrent instruments of similar tenor and may be signed or
          executed by Owners of the Bonds or by an agent appointed by an
          instrument in writing.  Proof of the execution of any such
          instrument and of the ownership of Bonds shall be sufficient for
          any purpose of this Indenture and shall be conclusive in favor of
          the Trustee with regard to any action taken by it under such
          instrument if made in the following manner:

                    (a) The fact and date of the execution by any person of
             any such instrument may be proved by the certificate of any
             officer in any jurisdiction who, by the laws thereof, has
             power to take acknowledgments within such jurisdiction, to the
             effect that the person signing such instrument acknowledged
             before him the execution thereof, or by an affidavit of a
             witness to such execution.

                    (b) The ownership or former ownership of Bonds shall be
             proved by the registration books kept under the provisions of
             Section 2.08 hereof.

             Nothing contained in this Article XI shall be construed as
          limiting the Trustee to such proof, it being intended that the
          Trustee may accept any other evidence of matters herein stated
          which it may deem sufficient.  Any request or consent of any
          Owner of a Bond shall bind every future Owner of the same Bond or
          any Bond or Bonds issued in lieu thereof in respect of anything
          done by the Trustee or the Pollution Control Corporation in
          pursuance of such request or consent.


                                     ARTICLE XII

                MODIFICATION OF THIS INDENTURE AND THE LOAN AGREEMENT

             Section 12.01.   Limitations.  Neither this Indenture nor the
          Loan Agreement shall be modified or amended in any respect
          subsequent to the original issuance of the Bonds except as
          provided in and in accordance with and subject to the provisions
          of this Article XII and Section 7.04 hereof.

             The Trustee may, but shall not be obligated to, enter into any
          Supplemental Indenture which affects the Trustee's own rights,
          duties or immunities under this Indenture or otherwise.

             Section 12.02.   Supplemental Indentures without Owner
          Consent.  The Pollution Control Corporation and the Trustee may,
          from time to time and at any time, without the consent of or
          notice to the Owners of the Bonds, enter into Supplemental
          Indentures as follows:

                    (a) to cure any formal defect, omission, inconsistency
             or ambiguity in this Indenture, provided, however, that such
             cure shall not materially and adversely affect the interests
             of the Owners of the Bonds;

                    (b) to grant to or confer or impose upon the Trustee
             for the benefit of the Owners of the Bonds any additional
             rights, remedies, powers, authority, security, liabilities or
             duties which may lawfully be granted, conferred or imposed;

                    (c) to add to the covenants and agreements of, and
             limitations and restrictions upon, the Pollution Control
             Corporation in this Indenture other covenants, agreements,
             limitations and restrictions to be observed by the Pollution
             Control Corporation;

                    (d) to confirm, as further assurance, any pledge under,
             and the subjection to any claim, lien or pledge created or to
             be created by, this Indenture, of the Receipts and Revenues of
             the Pollution Control Corporation from the Loan Agreement or
             of any other moneys, securities or funds;

                    (e) to authorize a different denomination or
             denominations of the Bonds and to make correlative amendments
             and modifications to this Indenture regarding exchange ability
             of Bonds of different denominations, redemptions of portions
             of Bonds of particular denominations and similar amendments
             and modifications of a technical nature;

                    (f) to modify, alter, supplement or amend this
             Indenture in such manner as shall permit the qualification
             hereof under the Trust Indenture Act of 1939, as from time to
             time amended;

                    (g) to modify, alter, supplement or amend this
             Indenture in such manner as shall be necessary, desirable or
             appropriate in order to provide for or eliminate the
             registration and registration of transfer of the Bonds through
             a book-entry or similar method, whether or not the Bonds are
             evidenced by certificates;

                    (h) to modify, alter, amend or supplement this
             Indenture in any other respect which is not materially adverse
             to the Owners and which does not involve a change described in
             clause (i), (ii), (iii) or (iv) of Section 12.03(a) hereof;
             and

                    (i) to provide any additional procedures, covenants or
             agreements necessary or desirable to maintain the tax-exempt
             status of interest on the Bonds.

             Before the Pollution Control Corporation and the Trustee shall
          enter into any Supplemental Indenture pursuant to this Section
          12.02, there shall have been delivered to the Trustee an opinion
          of Bond Counsel stating that such Supplemental Indenture is
          authorized or permitted by this Indenture and the Act, complies
          with their respective terms, will, upon the execution and
          delivery thereof, be valid and binding upon the Pollution Control
          Corporation in accordance with its terms and will not, in and of
          itself, adversely affect the exclusion from gross income for
          federal tax purposes of the interest on the Bonds.

             Section 12.03.   Supplemental Indentures with Consent of
          Owners.  (a) Except for any Supplemental Indenture entered into
          pursuant to Section 12.02 hereof, subject to the terms and
          provisions contained in this Section 12.03 and Section 12.05 and
          not otherwise, Owners of not less than a majority in aggregate
          principal amount of the Bonds then Outstanding which would be
          adversely affected thereby shall have the right from time to time
          to consent to and approve the execution and delivery by the
          Pollution Control Corporation and the Trustee of any Supplemental
          Indenture deemed necessary or desirable by the Pollution Control
          Corporation for the purposes of modifying, altering, amending,
          supplementing or rescinding, in any particular, any of the terms
          or provisions contained in this Indenture; provided, however,
          that, unless approved in writing by the Owners of all the Bonds
          then Outstanding which would be adversely affected thereby,
          nothing herein contained shall permit, or be construed as
          permitting, (i) a change in the times, amounts or currency of
          payment of the principal of or premium, if any, or interest on
          any Outstanding Bond, a reduction in the principal amount or
          redemption price of any Outstanding Bond or a change in the rate
          of interest thereon, or any impairment of the right of any Owner
          to institute suit for the payment of any Bond owned by it, or
          (ii) the creation of a claim or lien upon, or a pledge of, the
          Receipts and Revenues of the Pollution Control Corporation from
          the Loan Agreement ranking prior to or on a parity with the
          claim, lien or pledge created by this Indenture (except as
          referred to in Section 10.04 hereof), or (iii) a preference or
          priority of any Bond or Bonds over any other Bond or Bonds, or
          (iv) a reduction in the aggregate principal amount of Bonds the
          consent of the Owners of which is required for any such
          Supplemental Indenture or which is required, under Section 12.07
          hereof, for any modification, alteration, amendment or supplement
          to the Loan Agreement.

             (b) If at any time the Pollution Control Corporation shall
          request the Trustee to enter into any Supplemental Indenture for
          any of the purposes of this Section 12.03, the Trustee shall
          cause notice of the proposed Supplemental Indenture to be given
          by Mail to all Owners of Outstanding Bonds.  Such notice shall
          briefly set forth the nature of the proposed Supplemental
          Indenture and shall state that a copy thereof is on file at the
          Principal Office of the Trustee for inspection by all Owners of
          Bonds.

             (c) Within two years after the date of the first mailing of
          such notice, the Pollution Control Corporation and the Trustee
          may enter into such Supplemental Indenture in substantially the
          form described in such notice only if there shall have first been
          delivered to the Trustee (i) the required consents, in writing,
          of Owners of Bonds and (ii) an opinion of Bond Counsel stating
          that such Supplemental Indenture is authorized or permitted by
          this Indenture and the Act, complies with their respective terms
          and, upon the execution and delivery thereof, will be valid and
          binding upon the Pollution Control Corporation in accordance with
          its terms and will not, in and of itself, adversely affect the
          exclusion from gross income for federal tax purposes of the
          interest on the Bonds.

             (d) If Owners of not less than the percentage of Bonds
          required by this Section 12.03 shall have consented to and
          approved the execution and delivery thereof as herein provided,
          no Owner shall have any right to object to the execution and
          delivery of such Supplemental Indenture, or to object to any of
          the terms and provisions contained therein or the operation
          thereof, or in any manner to question the propriety of the
          execution and delivery thereof, or to enjoin or restrain the
          Pollution Control Corporation or the Trustee from executing and
          delivering the same or from taking any action pursuant to the
          provisions thereof.

             Section 12.04.   Effect of Supplemental Indenture.  Upon the
          execution and delivery of any Supplemental Indenture pursuant to
          the provisions of this Article XII, this Indenture shall be, and
          be deemed to be, modified, altered, amended or supplemented in
          accordance therewith, and the respective rights, duties and
          obligations under this Indenture of the Pollution Control
          Corporation, the Trustee and Owners of all Bonds then Outstanding
          shall thereafter be determined, exercised and enforced under this
          Indenture subject in all respects to such modifications,
          alterations, amendments and supplements.

             Section 12.05.   Consent of the Company.  Anything herein to
          the contrary notwithstanding, any Supplemental Indenture under
          this Article XII which affects any rights, powers, agreements or
          obligations of the Company under the Loan Agreement or requires a
          revision of the Loan Agreement shall not become effective unless
          and until the Company shall have consented to such Supplemental
          Indenture.

             Section 12.06.   Amendment of Loan Agreement without Consent
          of Owners.  Without the consent of or notice to the Owners of the
          Bonds, the Pollution Control Corporation may enter into any
          Supplemental Loan Agreement, and the Trustee may consent thereto,
          as may be required (a) by the provisions of the Loan Agreement
          and this Indenture, (b) for the purpose of curing any formal
          defect, omission, inconsistency or ambiguity therein, (c) to
          provide any additional procedures, covenants or agreements
          necessary or desirable to maintain the tax-exempt status of
          interest on the Bonds, or (d) in connection with any other change
          therein which is not materially adverse to the Owners of the
          Bonds.  A revision of Exhibit A to the Loan Agreement pursuant to
          Section 3.03 thereof, shall not be deemed a Supplemental Loan
          Agreement for purposes of this Indenture.

             Before the Pollution Control Corporation shall enter into, and
          the Trustee shall consent to, any Supplemental Loan Agreement
          pursuant to this Section 12.06, there shall have been delivered
          to the Trustee an opinion of Bond Counsel stating that such
          Supplemental Loan Agreement is authorized or permitted by this
          Indenture and the Act, complies with their respective terms,
          will, upon the execution and delivery thereof, be valid and
          binding upon the Pollution Control Corporation and the Company in
          accordance with its terms and will not, in and of itself,
          adversely affect the exclusion from gross income for federal tax
          purposes of interest on the Bonds.

             Section 12.07.   Amendment of Loan Agreement with Consent of
          Owners.  Except in the case of Supplemental Loan Agreements
          referred to in Section 12.06 hereof, the Pollution Control
          Corporation shall not enter into, and the Trustee shall not
          consent to, any Supplemental Loan Agreement without the written
          approval or consent of the Owners of not less than a majority in
          aggregate principal amount of the Bonds then Outstanding which
          would be adversely affected thereby, given and procured as
          provided in Section 12.03 hereof; provided, however, that, unless
          approved in writing by the Owners of all Bonds then Outstanding
          which would be adversely affected thereby, nothing herein
          contained shall permit, or be construed as permitting, a change
          in the obligations of the Company under Section 5.01 of the Loan
          Agreement.  If at any time the Pollution Control Corporation or
          the Company shall request the consent of the Trustee to any such
          proposed Supplemental Loan Agreement, the Trustee shall cause
          notice of such proposed Supplemental Loan Agreement to be given
          in the same manner as provided by Section 12.03 hereof with
          respect to Supplemental Indentures.  Such notice shall briefly
          set forth the nature of such proposed Supplemental Loan Agreement
          and shall state that copies of the instrument embodying the same
          are on file at the Principal Office of the Trustee for inspection
          by all Owners of the Bonds.  The Pollution Control Corporation
          may enter into, and the Trustee may consent to, any such proposed
          Supplemental Loan Agreement subject to the same conditions, and
          with the same effect, as provided by Section 12.03 hereof with
          respect to Supplemental Indentures.


                                     ARTICLE XIII

                                    MISCELLANEOUS

             Section 13.01.   Successors of the Pollution Control
          Corporation.  In the event of the dissolution of the Pollution
          Control Corporation, all the covenants, stipulations, promises
          and agreements in this Indenture contained, by or on behalf of,
          or for the benefit of, the Pollution Control Corporation, shall
          bind or inure to the benefit of the successors of the Pollution
          Control Corporation from time to time and any entity, officer,
          board, commission, agency or instrumentality to whom or to which
          any power or duty of the Pollution Control Corporation shall be
          transferred.

             Section 13.02.   Parties in Interest.  Except as herein
          otherwise specifically provided, nothing in this Indenture
          expressed or implied is intended or shall be construed to confer
          upon any person, firm or corporation other than the Pollution
          Control Corporation, the Company and the Trustee and their
          successors and assigns and the Owners of the Bonds any right,
          remedy or claim under or by reason of this Indenture, this
          Indenture being intended to be for the sole and exclusive benefit
          of the Pollution Control Corporation, the Company and the Trustee
          and their successors and assigns and the Owners of the Bonds.

             Section 13.03.   Severability.  In case any one or more of the
          provisions of this Indenture or of the Loan Agreement or of the
          Bonds shall, for any reason, be held to be illegal or invalid,
          such illegality or invalidity shall not affect any other
          provisions of this Indenture or of the Loan Agreement or of such
          Bonds, and this Indenture and the Loan Agreement and such Bonds
          shall be construed and enforced as if such illegal or invalid
          provisions had not been contained herein or therein.


             Section 13.04.   No Personal Liability of Pollution Control
          Corporation Officials.  No covenant or agreement contained in the
          Bonds or in this Indenture shall be deemed to be the covenant or
          agreement of any director, official, officer, agent, or employee
          of the Pollution Control Corporation in his individual capacity,
          and neither the members of the Board of Directors of the
          Pollution Control Corporation nor any official executing the
          Bonds shall be liable personally on the Bonds or be subject to
          any personal liability or accountability by reason of the
          issuance thereof.

             Section 13.05.   Bonds Owned by the Pollution Control
          Corporation or the Company.  In determining whether Owners of the
          requisite aggregate principal amount of the Bonds have concurred
          in any direction, consent or waiver under this Indenture, Bonds
          which are owned by the Pollution Control Corporation or the
          Company or by any person directly or indirectly controlling or
          controlled by or under direct or indirect common control with the
          Company (unless the Pollution Control Corporation, the Company or
          such person owns all Bonds which are then Outstanding, determined
          without regard to this Section 13.05) shall be disregarded and
          deemed not to be Outstanding for the purpose of any such
          determination, except that, for the purpose of determining
          whether the Trustee shall be protected in relying on any such
          direction, consent or waiver, only Bonds which the Trustee knows
          are so owned shall be so disregarded.  Upon the request of the
          Trustee, the Company and the Pollution Control Corporation shall
          furnish to the Trustee a certificate identifying all Bonds, if
          any, actually known to either of them to be owned or held by or
          for the account of any of the above-described persons, and the
          Trustee shall be entitled to rely on such certificate as
          conclusive evidence of the facts set forth therein and that all
          other Bonds are Outstanding for the purposes of such
          determination.  Bonds so owned which have been pledged in good
          faith may be regarded as Outstanding if the pledgee establishes
          to the satisfaction of the Trustee the pledgee's right so to act
          with respect to such Bonds and that the pledgee is not the
          Pollution Control Corporation or the Company or any person
          directly or indirectly controlling or controlled by or under
          direct or indirect common control with the Company.  In case of a
          dispute as to such right, any decision by the Trustee taken upon
          the advice of counsel shall be full protection to the Trustee.

             Section 13.06.   Counterparts.  This Indenture may be executed
          in any number of counterparts, each of which, when so executed
          and delivered, shall be an original; but such counterparts shall
          together constitute but one and the same Indenture.

             Section 13.07.   Governing Law.  The laws of the State of
          Arizona shall govern the construction and enforcement of this
          Indenture and of all Bonds, except that the laws of the State of
          New York shall govern the construction and enforcement of the
          rights and duties of the Trustee hereunder and the construction
          of Section 13.09 hereof and the computation of any period of
          grace provided herein.


             Section 13.08.   Notices.  Except as otherwise provided in
          this Indenture, all notices, certificates, requests requisitions
          or other communications by the Pollution Control Corporation, the
          Company, the Trustee, the Paying Agent, any Co-Paying Agent or
          the Registrar pursuant to this Indenture shall be in writing and
          shall be sufficiently given and shall be deemed given when mailed
          by registered mail, postage prepaid, addressed as follows: If to
          the Pollution Control Corporation, c/o Mangum, Wall, Stoops &
          Warden, 222 East Birch Avenue, Flagstaff, Arizona 86001,
          Attention: President; if to the Company, at 220 West Sixth
          Street, Tucson, Arizona 85702, Attention: Treasurer; if to the
          Trustee, at 100 Wall Street, Suite 1600, New York, New York
          10005, Attention: Vice President; if to the Paying Agent, any
          Co-Paying Agent or the Registrar, at the address designated in
          the acceptance of appointment or engagement.  Any of the
          foregoing may, by notice given hereunder to each of the others,
          designate any further or different addresses to which subsequent
          notices, certificates, requests or other communications shall be
          sent hereunder.

             Section 13.09.   Holidays.  If the date for making any payment
          or the last date for performance of any act or the exercising of
          any right, as provided in this Indenture, shall be a Saturday,
          Sunday or a public holiday in the city in which is located the
          Principal Office of the Trustee, such payment may be made or act
          performed or right exercised on the next succeeding business day,
          with the same force and effect as if done on the nominal date
          provided in this Indenture, and no interest shall accrue for the
          period after such nominal date.  If the last day of any period of
          grace, as provided in this Indenture, shall be a Saturday, Sunday
          or a public holiday in the city in which is located the Principal
          Office of the Trustee, the last day of such period of grace shall
          be deemed to be the next succeeding business day.

             Section 13.10.   Statutory Notice Regarding Cancellation of
          Contracts.  As required by the provisions of Section 38-511,
          Arizona Revised Statutes, as amended, notice is hereby given that
          political subdivisions of the State of Arizona or any of their
          departments or agencies may, within three (3) years of its
          execution, cancel any contract, without penalty or further
          obligation, made by the political subdivisions or any of their
          departments or agencies on or after September 30, 1988, if any
          person significantly involved in initiating, negotiating,
          securing, drafting or creating the contract on behalf of the
          political subdivisions or any of their departments or agencies
          is, at any time while the contract or any extension of the
          contact is in effect, an employee or agent of any other party to
          the contract in any capacity or a consultant to any other party
          of the contract with respect to the subject matter of the
          contract.

             The Trustee covenants and agrees not to employ as an employee,
          agent or, with respect to the subject matter of this Indenture, a
          consultant, any person actually known by the Trustee to be
          significantly involved in initiating, negotiating, securing,
          drafting or creating such Indenture on behalf of the Pollution
          Control Corporation within three (3) years from the execution
          hereof, unless a waiver is provided by the Pollution Control
          Corporation.


  <PAGE> 


              IN WITNESS WHEREOF, Coconino County, Arizona Pollution
          Control Corporation has caused this Indenture to be executed by
          its President and First Trust of New York, National Association
          has caused this Indenture to be executed on its behalf by its
          Vice President, all as of the day and year first above written.


                                             COCONINO COUNTY, ARIZONA
                                             POLLUTION CONTROL CORPORATION

          Attest:                            By: /s/ Bruce J. Nordstrom
                                                 --------------------------
                                                  President
           /s/ Terrence J. Rice
          -----------------------------------
          Secretary

                                             FIRST TRUST OF NEW YORK,
                                             NATIONAL ASSOCIATION



          Attest:                            By: /s/ Patrick J. Crowley
                                                --------------------------
                                                Vice President 

 	    /s/ Steven Haas
          -----------------------------------
          Assistant Secretary

   <PAGE>

                                                                  EXHIBIT A

                                    (FORM OF BOND)

          No.


                               COCONINO COUNTY, ARIZONA
                            POLLUTION CONTROL CORPORATION
                           POLLUTION CONTROL REVENUE BOND,
                                    1997 SERIES A
                    (TUCSON ELECTRIC POWER COMPANY NAVAJO PROJECT)

          INTEREST RATE (PER ANNUM):
          MATURITY DATE:                                    DATED:
          CUSIP:
          REGISTERED OWNER:
          PRINCIPAL AMOUNT:                                    DOLLARS



             Coconino County, Arizona Pollution Control Corporation, a
          political subdivision of the State of Arizona (the "Pollution
          Control Corporation"), for value received, hereby promises to pay
          (but only out of the Receipts and Revenues of the Pollution
          Control Corporation from the Loan Agreement, as hereinafter
          defined, and other moneys pledged therefor) to the Registered
          Owner identified above or registered assigns, on the Maturity
          Date set forth above, upon the presentation and surrender hereof,
          the Principal Amount set forth above and to pay (but only out of
          the Receipts and Revenues of the Pollution Control Corporation
          from the Loan Agreement and other moneys pledged therefor),
          interest on said Principal Amount until payment of said Principal
          Amount has been made or duly provided, from the date hereof, at
          the Interest Rate set forth above, semi-annually on the first
          days of October and April in each year, commencing October 1,
          1997.  Interest will be calculated on the basis of a 360-day year
          of twelve 30-day months.

             The principal of and premium, if any, on this Bond are payable
          at the principal office of First Trust of New York, National
          Association, as Paying Agent, or at the principal office of any
          co-paying agent appointed in accordance with the Indenture (as
          hereinafter defined), at the option of the Registered Owner
          hereof.  Interest on this Bond is payable by check drawn upon the
          Paying Agent and mailed to the Registered Owner of this Bond as
          of the close of business on the Record Date (as defined in the
          Indenture), at the registered address of such Registered Owner;
          notwithstanding the foregoing, upon request to the Paying Agent
          by a Registered Owner of not less than $1,000,000 in aggregate
          principal amount of Bonds, interest on such Bonds and, after
          presentation and surrender of such Bonds, the principal thereof
          shall be paid to such Registered Owner by wire transfer to the
          account maintained within the continental United States specified
          by such Registered Owner or, if such Registered Owner maintains
          an account with the entity acting as Paying Agent, by deposit
          into such account.  Payment of the principal of and premium, if
          any, and interest on this Bond shall be in any coin or currency
          of the United States of America as, at the respective times of
          payment, shall be legal tender for the payment of public and
          private debts.

             This Bond is one of the duly authorized Pollution Control
          Revenue Bonds, 1997 Series A (Tucson Electric Power Company
          Navajo Project) (the "Bonds") of the Pollution Control
          Corporation, aggregating Thirty-six Million Seven Hundred
          Thousand Dollars ($36,700,000) in principal amount, issued under
          and pursuant to the Constitution and laws of the State of
          Arizona, particularly Title 35, Chapter 6, Arizona Revised
          Statutes, as amended (the "Act"), and the Indenture of Trust,
          dated as of April 1, 1997 (the "Indenture"), between the
          Pollution Control Corporation and First Trust of New York,
          National Association, as trustee (the "Trustee"), for the purpose
          of financing and refinancing a portion of the costs of the
          acquisition, construction, improvement and equipping of certain
          pollution control facilities (the "Facilities") at the Navajo
          Generating Station (the "Plant").  Pursuant to the Loan
          Agreement, dated as of April 1, 1997 (the "Loan Agreement"),
          between the Pollution Control Corporation and Tucson Electric
          Power Company, a corporation organized and existing under the
          laws of the State of Arizona (the "Company"), the proceeds of the
          Bonds, other than accrued interest, if any, paid by the initial
          purchasers thereof, will be loaned from time to time to the
          Company.

             Neither the County of Coconino, Arizona nor the State of
          Arizona shall in any event be liable for the payment of the
          principal of or premium, if any, or interest on the Bonds, and
          neither the Bonds, nor the premium, if any, or the interest
          thereon, shall be construed to constitute an indebtedness of the
          County of Coconino, Arizona or the State of Arizona within the
          meaning of any constitutional or statutory provisions whatsoever. 
          The Bonds and the premium, if any, and the interest thereon are
          limited obligations of the Pollution Control Corporation payable
          solely from the Receipts and Revenues of the Pollution Control
          Corporation from the Loan Agreement and other moneys pledged
          therefor under the Indenture.

             The Bonds are equally and ratably secured, to the extent
          provided in the Indenture, by the pledge thereunder of the
          "Receipts and Revenues of the Pollution Control Corporation from
          the Loan Agreement", which term is used herein as defined in the
          Indenture and which as therein defined means all moneys paid or
          payable to the Trustee for the account of the Pollution Control
          Corporation by the Company in respect of the loan payments,
          including all receipts of the Trustee which, under the provisions
          of the Indenture, reduce the amounts of such payments. The
          Pollution Control Corporation has also pledged and assigned to
          the Trustee as security for the Bonds all other rights and
          interests of the Pollution Control Corporation under the Loan
          Agreement (other than its rights to indemnification and its
          administrative expenses and certain other rights).

             The transfer of this Bond shall be registered upon the
          registration books kept at the principal office of First Trust of
          New York, National Association, as Registrar, at the written
          request of the Registered Owner hereof or his attorney duly
          authorized in writing, upon surrender of this Bond at said
          office, together with a written instrument of transfer
          satisfactory to the Registrar duly executed by the Registered
          Owner or his duly authorized attorney.

             In the manner and with the effect provided in the Indenture,
          each of the Bonds may be redeemed prior to maturity, as follows:

               (a)  The Bonds shall be subject to redemption by the
             Pollution Control Corporation, at the direction of the
             Company, on any date on or after October 1, 2007 in whole at
             any time or in part from time to time, at the applicable
             redemption price (expressed as a percentage of principal
             amount) set forth below, plus accrued interest to the
             redemption date:

                  Redemption Period         Redemption Price
                  -----------------         ----------------
           October 1, 2007 through
           September 30, 2008                    102%
           October 1, 2008 through
           September 30, 2009                    101%
           October 1, 2009 and thereafter        100%

               (b)  The Bonds shall be subject to redemption by the
             Pollution Control Corporation, at the direction of the
             Company, in whole at any time at the principal amount thereof
             plus accrued interest to the redemption date, if:

                  (i) the Company shall have determined that the continued
               operation of the Plant is impracticable, uneconomical or
               undesirable for any reason;

                  (ii) the Company shall have determined that the continued
               operation of the Facilities is impracticable, uneconomical
               or undesirable due to (A) the imposition of taxes, other
               than ad valorem taxes currently levied upon privately owned
               property used for the same general purpose as the
               Facilities, or other liabilities or burdens with respect to
               the Facilities or operation thereof, (B) changes in
               technology, in environmental standards or legal requirements
               or in the economic availability of materials, supplies,
               equipment or labor or (C) destruction of or damage to all or
               part of the Facilities;

                  (iii) all or substantially all of the Facilities or the
               Plant shall have been condemned or taken by eminent domain;
               or

                  (iv) the operation of the Facilities or the Plant shall
               have been enjoined or shall have otherwise been prohibited
               by, or shall conflict with, any order, decree, rule or
               regulation of any court or of any federal, state or local
               regulatory body, administrative agency or other governmental
               body.

               (c)  The Bonds shall be subject to mandatory redemption by
             the Pollution Control Corporation, at the principal amount
             thereof plus accrued interest to the redemption date, on the
             180th day (or such earlier date as may be designated by the
             Company) after a final determination by a court of competent
             jurisdiction or an administrative agency, to the effect that,
             as a result of a failure by the Company to perform or observe
             any covenant, agreement or representation contained in the
             Loan Agreement, the interest payable on the Bonds is included
             for federal income tax purposes in the gross income of the
             owners thereof, other than any owner of a Bond who is a
             "substantial user" of the Facilities or a "related person"
             within the meaning of Section 103(b)(13) of the Internal
             Revenue Code of 1954, as amended (the "1954 Code").  No
             determination by any court or administrative agency shall be
             considered final for the purposes of this paragraph (c) unless
             the Company shall have been given timely notice of the
             proceeding which resulted in such determination and an
             opportunity to participate in such proceeding, either directly
             or through an owner of a Bond, and until the conclusion of any
             appellate review sought by any party to such proceeding or the
             expiration of the time for seeking such review. The Bonds
             shall be redeemed either in whole or in part in such principal
             amount that the interest payable on the Bonds remaining
             outstanding after such redemption would not be included in the
             gross income of any owner thereof, other than an owner of a
             Bond who is a "substantial user" of the Facilities or a
             "related person" within the meaning of Section 103(b)(13) of
             the 1954 Code.

               (d)  In the event that the aggregate of the amounts, if any,
             of the proceeds of the Bonds remaining unexpended upon the
             completion of the Facilities or upon the termination of the
             acquisition and construction thereof, together with any income
             or other gain from the investment thereof, shall at any time,
             or from time to time, be equal to or greater than $5,000, the
             Pollution Control Corporation shall redeem the Bonds, at the
             principal amount thereof plus accrued interest to the
             redemption date, in the largest aggregate principal amount
             which does not exceed the amount of such proceeds together
             with income or other gain on an interest payment date
             determined as set forth in, and otherwise in accordance with
             the provisions of, the Indenture; provided, however, that the
             Company may direct that such proceeds and income be applied to
             the purchase of the Bonds or in any other manner which will
             not impair the validity of the Bonds or the exemption from
             gross income for federal tax purposes of the interest thereon.

             If less than all of the Bonds at the time outstanding are to
          be called for redemption, the particular Bonds or portions of
          Bonds to be redeemed shall be selected by the Trustee, in such
          manner as the Trustee in its discretion may deem proper, in the
          principal amounts designated to the Trustee by the Company or
          otherwise as required by the Indenture.

             In the event any of the Bonds are called for redemption, the
          Trustee shall give notice, in the name of the Pollution Control
          Corporation, of the redemption of such Bonds.  Such notice shall
          be given by mailing a copy of the redemption notice by
          first-class mail at least thirty (30) days prior to the date
          fixed for redemption to the Registered Owners of the Bonds to be
          redeemed at the addresses shown on the registration books;
          provided, however, that failure duly to give such notice by
          mailing, or any defect therein, shall not affect the validity of
          any proceedings for the redemption of the Bonds as to which there
          shall be no such failure or defect.

             With respect to any notice of redemption of Bonds in
          accordance with the redemption provisions lettered (a) or (b)
          above, unless, upon the giving of such notice, such Bonds shall
          be deemed to have been paid within the meaning of the Indenture,
          such notice shall state that such redemption, shall be
          conditional upon the receipt, by the Trustee on or prior to the
          opening of business on the date fixed for such redemption of
          moneys sufficient to pay the principal of and premium, if any,
          and interest on such Bonds to be redeemed, and that if such
          moneys shall not have been so received said notice shall be of no
          force and effect and the Pollution Control Corporation shall not
          be required to redeem such Bonds. In the event that such notice
          of redemption contains such a condition and such moneys are not
          so received, the redemption shall not be made and the Trustee
          shall within a reasonable time thereafter give notice, in the
          manner in which the notice of redemption was given, that such
          moneys were not so received.

             If a notice of redemption shall be unconditional, or if the
          conditions of a conditional notice of redemption shall have been
          satisfied, then upon presentation and surrender of Bonds so
          called for redemption at the place or places of payment, such
          Bonds shall be redeemed.

             Any Bonds and portions of Bonds which have been duly selected
          for redemption shall cease to bear interest on the specified
          redemption date provided that moneys sufficient to pay the
          principal of, premium, if any, and interest on such Bonds shall
          be on deposit with the Trustee on the date fixed for redemption
          so that such Bonds will be deemed to be paid in accordance with
          the Indenture and such Bonds shall thereafter cease to be
          entitled to any lien, benefit or security under the Indenture.

             The Registered Owner of this Bond shall have no right to
          enforce the provisions of the Indenture, or to institute action
          to enforce the covenants therein, or to take any action with
          respect to any default under the Indenture, or to institute,
          appear in or defend any suit or other proceeding with respect
          thereto, except as provided in the Indenture.

             With certain exceptions as provided therein, the Indenture and
          the Loan Agreement may be modified or amended only with the
          consent of the Registered Owners of a majority in aggregate
          principal amount of all Bonds outstanding under the Indenture
          which would be adversely affected thereby.

             Reference is hereby made to the Indenture and the Loan
          Agreement, copies of which are on file with the Trustee, for the
          provisions, among others, with respect to the nature and extent
          of the rights, duties and obligations of the Pollution Control
          Corporation, the Company, the Trustee and the Registered Owners
          of the Bonds.  The Registered Owner of this Bond, by the
          acceptance hereof, is deemed to have agreed and consented to the
          terms and provisions of the Indenture and the Loan Agreement.

             Among other things, as provided in the Indenture and subject
          to certain limitations therein set forth, this Bond or any
          portion of the principal amount hereof will be deemed to have
          been paid within the meaning and with the effect expressed in the
          Indenture, and the entire indebtedness of the Pollution Control
          Corporation in respect thereof shall be satisfied and discharged,
          if there has been irrevocably deposited with the Trustee, in
          trust, money in an amount which will be sufficient and/or
          Government Obligations (as defined in the Indenture), the
          principal of and interest on which, when due, without regard to
          any reinvestment thereof, will provide moneys which, together
          with moneys deposited with or held by the Trustee, will be
          sufficient, to pay when due the principal of and premium, if any,
          and interest on this Bond or such portion of the principal amount
          hereof when due.

             Among other things, the Loan Agreement contains terms,
          provisions and conditions relating to the consolidation or merger
          of the Company with or into, and the sale, transfer or other
          disposition of assets to, another Person (as defined in the Loan
          Agreement), to the assumption by such other Person, in certain
          circumstances, of all of the obligations of the Company under the
          Loan Agreement and to the release and discharge of the Company,
          in certain circumstances, from such obligations.

             The Pollution Control Corporation, the Trustee, the Registrar,
          the Paying Agent and any co-paying agent may deem and treat the
          person in whose name this Bond is registered as the absolute
          owner hereof for all purposes, whether or not this Bond is
          overdue, and neither the Pollution Control Corporation, the
          Trustee, the Paying Agent nor any co-paying agent shall be
          affected by any notice to the contrary.

             It is hereby certified, recited and declared that all acts,
          conditions and things required by the Constitution and laws of
          the State of Arizona to exist, to have happened and to have been
          performed, precedent to and in the execution and delivery of the
          Indenture and the issuance of this Bond, do exist, have happened
          and have been performed in regular and due form as required by
          law.

             No covenant or agreement contained in this Bond or the
          Indenture shall be deemed to be a covenant or agreement of any
          official, officer, agent or employee of the Pollution Control
          Corporation in his individual capacity, and neither the members
          of the Board of Directors of the Pollution Control Corporation,
          nor any official executing this Bond, shall be liable personally
          on this Bond or be subject to any personal liability or
          accountability by reason of the issuance or sale of this Bond.

             This Bond shall not be entitled to any right or benefit under
          the Indenture, or be valid or become obligatory for any purpose,
          until this Bond shall have been authenticated by the execution by
          the Trustee, or its successor as Trustee of the certificate of
          authentication inscribed hereon.


              IN WITNESS WHEREOF, Coconino County, Arizona Pollution
          Control Corporation has caused this Bond to be executed with the
          manual or facsimile signature of its President or Vice President
          and attested with the manual or facsimile signature of its
          Secretary or Assistant Secretary.

                                        COCONINO COUNTY, ARIZONA
                                        POLLUTION CONTROL CORPORATION



                              By
                                 -----------------------------------------
                                 President

          ATTEST:


          -------------------------------------------
                  Secretary

   <PAGE> 

                                                                  EXHIBIT B


                     (FORM FOR ORDINARY REGISTRATION OF TRANSFER)

                       COMPLETE AND SIGN THIS FORM FOR ORDINARY
                               REGISTRATION OF TRANSFER


          FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
          transfer(s) unto

          Please Insert Social Security Or Other Identifying Number of
          Assignee


          -----------------------------------------------------------------


          -----------------------------------------------------------------
          Please print or typewrite name and address including postal zip
          code of assignee


          -----------------------------------------------------------------
          this bond and all rights thereunder, hereby irrevocably
          constituting and appointing
                                            attorney to register such
          transfer on the registration books in the principal office of the
          Registrar, with full power of substitution in the premises.

          Dated:
                -------------------------

          ----------------------------------------------------------------

                                        NOTE:  The signature on this
                                        assignment must correspond with the
                                        name as written on the face of this
                                        Bond in every particular, without
                                        alteration, enlargement or any
                                        change whatsoever.



   <PAGE> 

                                                                  EXHIBIT C

                  (FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION)

                            CERTIFICATE OF AUTHENTICATION

                    This is to certify that this Bond is one of the Bonds
               described in the within-mentioned Indenture.


                              FIRST TRUST OF NEW YORK, NATIONAL ASSOCIATION
                              as Trustee


                                   By
                                     -------------------------------------
                                     Authorized Officer

          Date of Authentication:
                                 -----------------------



                                                            EXHIBIT 4e


          =================================================================


                                    LOAN AGREEMENT



                                       BETWEEN



                               COCONINO COUNTY, ARIZONA

                            POLLUTION CONTROL CORPORATION



                                         AND



                            TUCSON ELECTRIC POWER COMPANY




                                                  
                                   ---------------




                              DATED AS OF APRIL 1, 1997



                                                  
                                   ---------------



                                     RELATING TO

                           POLLUTION CONTROL REVENUE BONDS,
                                    1997 SERIES B
                    (TUCSON ELECTRIC POWER COMPANY NAVAJO PROJECT)


          =================================================================

   <PAGE> 


                                  TABLE OF CONTENTS*

                                                                       Page
                                                                       ----

             LOAN AGREEMENT . . . . . . . . . . . . . . . . . . . . . .   1

                                      ARTICLE I

                                     DEFINITIONS

               SECTION 1.01.  Definitions . . . . . . . . . . . . . . .   2
               SECTION 1.02.  Incorporation of Certain Definitions by
               Reference  . . . . . . . . . . . . . . . . . . . . . . .   4

                                      ARTICLE II

                            REPRESENTATIONS AND WARRANTIES

               SECTION 2.01.  Representations and Warranties of the
               Pollution Control Corporation  . . . . . . . . . . . . .   5
               SECTION 2.02.  Representations and Warranties of the
               Company  . . . . . . . . . . . . . . . . . . . . . . . .   5

                                     ARTICLE III

                                    THE FACILITIES

               SECTION 3.01.  Facilities; Property of the Company . . .   6
               SECTION 3.02.  Revision of Plans and Specifications  . .   6
               SECTION 3.03.  Maintenance of Facilities; Remodeling . .   6
               SECTION 3.04.  Insurance . . . . . . . . . . . . . . . .   7
               SECTION 3.05.  Condemnation  . . . . . . . . . . . . . .   7
               SECTION 3.06.  Termination of Construction . . . . . . .   7

                                      ARTICLE IV

              ISSUANCE OF THE BONDS; THE LOANS; DISPOSITION OF PROCEEDS
                                     OF THE BONDS

               SECTION 4.01.  Issuance of the Bonds . . . . . . . . . .   7
               SECTION 4.02.  Issuance of Other Obligations.  . . . . .   7
               SECTION 4.03.  The Loan; Disposition of Bond Proceeds. .   7
               SECTION 4.04.  Investment of Moneys in Funds and Accounts  7

                                      ARTICLE V

                           LOAN PAYMENTS; OTHER OBLIGATIONS

               SECTION 5.01.  Loan Payments.  . . . . . . . . . . . . .   8
               SECTION 5.02.  Payments Assigned; Obligation Absolute  .   8
               SECTION 5.03.  Payment of Expenses . . . . . . . . . . .   8
               SECTION 5.04.  Indemnification . . . . . . . . . . . . .   8
               SECTION 5.05.  Payment of Taxes; Discharge of Liens  . .   9

          -------------------------

          *  This table of contents is not part of the Loan Agreement, and
             is for convenience only.  The captions herein are of no legal
             effect and do not vary the meaning or legal effect of any part
             of the Loan Agreement.


   <PAGE> 


                                      ARTICLE VI

                                  SPECIAL COVENANTS

               SECTION 6.01.  Maintenance of Corporate Existence  . . .   9
               SECTION 6.02.  Permits or Licenses . . . . . . . . . . .  10
               SECTION 6.03.  Pollution Control Corporation's Access to
                              Facilities .. . . . . . . . . . . . . . .  10
               SECTION 6.04.  Tax-Exempt Status of Interest on Bonds. .  10
               SECTION 6.05.  Use of Facilities . . . . . . . . . . . .  11
               SECTION 6.06.  Financing Statements  . . . . . . . . . .  11

                                     ARTICLE VII

                           ASSIGNMENT, LEASING AND SELLING

               SECTION 7.01.  Conditions  . . . . . . . . . . . . . . .  11
               SECTION 7.02.  Instrument Furnished to Pollution Control
                              Corporation and Trustee . . . . . . . . .  13
               SECTION 7.03.  Limitation  . . . . . . . . . . . . . . .  13

                                     ARTICLE VIII

                            EVENTS OF DEFAULT AND REMEDIES

               SECTION 8.01.  Events of Default . . . . . . . . . . . .  13
               SECTION 8.02.  Force Majeure . . . . . . . . . . . . . .  14
               SECTION 8.03.  Remedies  . . . . . . . . . . . . . . . .  14
               SECTION 8.04.  No Remedy Exclusive . . . . . . . . . . .  14
               SECTION 8.05.  Reimbursement of Attorneys' and Agents'
                              Fees  . . . . . . . . . . . . . . . . . .  14
               SECTION 8.06.  Waiver of Breach  . . . . . . . . . . . .  15

                                      ARTICLE IX

                                 REDEMPTION OF BONDS

               SECTION 9.01.  Redemption of Bonds . . . . . . . . . . .  15
               SECTION 9.02.  Compliance with the Indenture . . . . . .  15

                                      ARTICLE X

                                    MISCELLANEOUS

               SECTION 10.01.  Term of Agreement  . . . . . . . . . . .  15
               SECTION 10.02.  Notices  . . . . . . . . . . . . . . . .  15
               SECTION 10.03.  Parties in Interest  . . . . . . . . . .  16
               SECTION 10.04.  Amendments . . . . . . . . . . . . . . .  16
               SECTION 10.05.  Counterparts . . . . . . . . . . . . . .  16
               SECTION 10.06.  Severability . . . . . . . . . . . . . .  16
               SECTION 10.07.  Governing Law  . . . . . . . . . . . . .  16
               SECTION 10.08.  Notice Regarding Cancellation of
                               Contracts.  . .  . . . . . . . . . . . .  16


          Signatures  . . . . . . . . . . . . . . . . . . . . . . . . .  18
          Exhibit A - Description of the Facilities . . . . . . . . . . A-1

   <PAGE> 


                                   LOAN AGREEMENT 

             THIS LOAN AGREEMENT, dated as of April 1, 1997 (this
          "Agreement"), between COCONINO COUNTY, ARIZONA POLLUTION CONTROL
          CORPORATION, an Arizona nonprofit corporation and a political
          subdivision of the State of Arizona (hereinafter called the
          "Pollution Control Corporation"), and TUCSON ELECTRIC POWER
          COMPANY, a corporation organized and existing under the laws of
          the State of Arizona formerly known as Tucson Gas & Electric
          Company (hereinafter called the "Company"),

                                W I T N E S S E T H :

             WHEREAS, the Pollution Control Corporation is authorized and
          empowered under Title 35, Chapter 6, Arizona Revised Statutes, as
          amended (the "Act"), to issue its bonds in accordance with the
          Act and to make secured or unsecured loans for the purpose of
          financing or refinancing the acquisition, construction,
          improvement or equipping of pollution control facilities
          consisting of real and personal properties, including but not
          limited to machinery and equipment whether or not now in
          existence or under construction, which are used in whole or in
          part to control, prevent, abate, alter, dispose or store, solid
          waste, thermal, noise, atmospheric or water pollutants,
          contaminants or products therefrom, whether such facilities serve
          one or more purposes or functions in addition to controlling,
          preventing, abating, altering, disposing or storing such
          pollutants, contaminants or the products therefrom, and to charge
          and collect interest on such loans and pledge the proceeds of
          loan agreements as security for the payment of the principal of
          and interest on bonds, or designated issues of bonds, issued by
          the Pollution Control Corporation and any agreements made in
          connection therewith, whenever the Board of Directors of the
          Pollution Control Corporation finds such loans to be in
          furtherance of the purposes of the Pollution Control Corporation;

             WHEREAS, the Pollution Control Corporation has heretofore
          issued and sold $25,000,000 aggregate principal amount of its
          Pollution Control Revenue Bonds, 1974 Series A (Tucson Gas &
          Electric Company Project) (the "1974 Bonds") due December 17,
          1975;

             WHEREAS, the Pollution Control Corporation has also heretofore
          issued and sold $15,700,000 aggregate principal amount of its
          Pollution Control Revenue Bonds, 1975 Series A (Tucson Gas and
          Electric Company Project) (the "1975 Bonds"), the proceeds of
          which were loaned to the Company (formerly known as Tucson Gas &
          Electric Company) to pay a portion of the principal amount of the
          1974 Bonds; and

             WHEREAS, the Pollution Control Corporation has also heretofore
          issued and sold $14,700,000 aggregate principal amount of its
          Pollution Control Refunding Revenue Bonds, 1996 Series B (Tucson
          Electric Power Company Project), all of which remain outstanding
          (the "1996 Bonds"), the proceeds of which were loaned to the
          Company to pay the outstanding principal amount of the 1975
          Bonds; and

             WHEREAS, the Pollution Control Corporation proposes to issue
          and sell its revenue bonds for the purpose of refinancing, by the
          payment or redemption of the 1996 Bonds, or provisions therefor,
          a portion of the cost of the pollution control facilities
          described in Exhibit A hereto (the "Facilities") paid from the
          proceeds of the 1975 Bonds;

             NOW, THEREFORE, the parties hereto, intending to be legally
          bound hereby and in consideration of the premises, DO HEREBY
          AGREE as follows:


                                      ARTICLE I

                                     DEFINITIONS

             SECTION 1.01.  Definitions.  The terms defined in this Article
          I shall for all purposes of this Agreement have the meanings
          herein specified, unless the context clearly requires otherwise: 

          Act:
             "Act" shall mean Title 35, Chapter 6, Arizona Revised
          Statutes, and all acts supplemental thereto or amendatory
          thereof.  

          Administration Expenses:

             "Administration Expenses" shall mean the reasonable expenses
          incurred by the Pollution Control Corporation with respect to
          this Agreement, the Indenture and any transaction or event
          contemplated by this Agreement or the Indenture, including the
          compensation and reimbursement of expenses and advances payable
          to the Trustee, to the paying agent, any co-paying agent and the
          registrar under the Indenture.  

          Agreement:

             "Agreement" shall mean this Loan Agreement, dated as of April
          1, 1997, between the Pollution Control Corporation and the
          Company, and any and all modifications, alterations, amendments
          and supplements hereto.

          Authorized Company Representative:

             "Authorized Company Representative" shall mean each person at
          the time designated to act on behalf of the Company by written
          certificate furnished to the Pollution Control Corporation and
          the Trustee containing the specimen signature of such person and
          signed on behalf of the Company by its President, any Vice
          President or its Treasurer, together with its Secretary or any
          Assistant Secretary.

          Bond Counsel:

             "Bond Counsel" shall mean any firm or firms of nationally
          recognized bond counsel experienced in matters pertaining to the
          validity of, and exclusion from gross income for federal tax
          purposes of interest on bonds issued by states and political
          subdivisions, selected by the Company and acceptable to the
          Pollution Control Corporation.  

          Bond Fund:

             "Bond Fund" shall mean the fund created by Section 4.01 of the
          Indenture.

          Bonds:

             "Bond" or "Bonds" shall mean the Pollution Control Revenue
          Bonds, 1997 Series B (Tucson Electric Power Company Navajo
          Project) of the Pollution Control Corporation.  

          Code:

             "Code" shall mean the Internal Revenue Code of 1986 or any
          successor statute thereto.  Each reference to a section of the
          Code herein shall be deemed to include the United States Treasury
          Regulations proposed or in effect thereunder and applicable to
          the Bonds or the use of the proceeds thereof, unless the context
          clearly requires otherwise.  Reference to any particular Code
          section shall, in the event of a successor Code, be deemed to be
          a reference to the successor to such Code section.

          Company:

             "Company" shall mean Tucson Electric Power Company, a
          corporation organized and existing under the laws of the State of
          Arizona, its successors and their assigns, including, without
          limitation, any successor obligor under Section 6.01 or 7.01 to
          the extent of the obligations assumed thereunder.

          Completion Date:

             "Completion Date" shall be the date on which the Facilities
          are completed in their entirety and ready to be placed in service
          and operated, all as determined by the Company.


          Facilities:

             "Facilities" shall mean the real and personal properties,
          machinery and equipment currently existing, under construction
          and to be constructed which are described in Exhibit A hereto, as
          revised from time to time to reflect any changes therein,
          additions thereto, substitutions therefor and deletions therefrom
          permitted by the terms hereof, subject, however, to the
          provisions of Section 7.01 hereof.

          Indenture:

             "Indenture" shall mean the Indenture of Trust, dated as of
          April 1, 1997, between the Pollution Control Corporation and the
          Trustee relating to the Bonds, and any and all modifications,
          alterations, amendments and supplements thereto.  

          Loan Payments:

             "Loan Payments" shall mean the payments required to be made by
          the Company pursuant to Section 5.01 hereof.  

          1954 Code:

             "1954 Code" shall mean the Internal Revenue Code of 1954, as
          amended.

          1996 Bonds:

             "1996 Bonds" shall mean the $14,700,000 aggregate principal
          amount of the Pollution Control Corporation's Pollution Control
          Refunding Revenue Bonds, 1996 Series B (Tucson Electric Power
          Company Project).

          Outstanding:

             "Outstanding", when used in reference to the Bonds, shall
          mean, as at any particular date, the aggregate of all Bonds
          authenticated and delivered under the Indenture except: 

               (a)  those canceled by the Trustee at or prior to such date
             or delivered to or acquired by the Trustee at or prior to such
             date for cancellation; 

               (b)  those deemed to be paid in accordance with Article VIII
             of the Indenture; and

               (c)  those in lieu of or in exchange or substitution for
             which other Bonds shall have been authenticated and delivered
             pursuant to the Indenture, unless proof satisfactory to the
             Trustee and the Company is presented that such Bonds are held
             by a bona fide holder in due course.

          Person:

             "Person" means (i) any corporation, limited liability company,
          partnership, joint venture, association, joint-stock company,
          business trust, or unincorporated organization, in each case
          formed or organized under the laws of the United States of
          America, any state thereof or the District of Columbia, or (ii)
          the United States of America or any state thereof, or any
          political subdivision of either thereof, or any agency, authority
          or other instrumentality of any of the foregoing.  

          Plant:

             "Plant" shall mean the Navajo Generating Station, an electric
          power generating plant near Page, Arizona, in Coconino County,
          Arizona, and any additions or improvements thereto or
          replacements thereof.

          Plant Agreements:

             "Plant Agreements" shall mean all contracts relating to the
          ownership, construction and operation of the Plant, including the
          Facilities, as from time to time amended or supplemented.

          Pollution Control Corporation:

             "Pollution Control Corporation" shall mean Coconino County,
          Arizona Pollution Control Corporation, an Arizona nonprofit
          corporation and a political subdivision of the State of Arizona
          incorporated for and with the approval of the County of Coconino,
          Arizona, pursuant to the provisions of the Constitution of the
          State of Arizona and the Act, its successors and their assigns.

          Tax Agreement:

             "Tax Agreement" shall mean that tax certificate and agreement,
          dated the date of the initial authentication and delivery of the
          Bonds, between the Pollution Control Corporation and the Company,
          relating to the requirements of the Code, and any and all
          modifications, alterations, amendments and supplements thereto.

          Trustee:

             "Trustee" shall mean First Trust of New York, National
          Association, as trustee under the Indenture, its successors in
          trust and their assigns.

             SECTION 1.02.  Incorporation of Certain Definitions by
          Reference.  Each capitalized term used herein and not otherwise
          defined herein shall have the meaning set forth in the Indenture.



                                      ARTICLE II

                            REPRESENTATIONS AND WARRANTIES


             SECTION 2.01.  Representations and Warranties of the Pollution
          Control Corporation.  The Pollution Control Corporation makes the
          following representations and warranties as the basis for the
          undertakings on the part of the Company contained herein:

               (a)  The Pollution Control Corporation is an Arizona
             nonprofit corporation and a political subdivision of the State
             of Arizona created and existing under the Constitution and
             laws of the State of Arizona; 

               (b)   The Pollution Control Corporation has the power to
             enter into this Agreement and the Indenture and to perform and
             observe the agreements and covenants on its part contained
             herein and therein, including without limitation the power to
             issue and sell the Bonds as contemplated herein and in the
             Indenture, and by proper action has duly authorized the
             execution and delivery hereof and thereof;

               (c)  The execution and delivery of this Agreement and the
             Indenture by the Pollution Control Corporation do not, and
             consummation of the transactions contemplated hereby and
             fulfillment of the terms hereof and thereof by the Pollution
             Control Corporation will not, result in a breach of any of the
             terms or provisions of, or constitute a default under, any
             indenture, mortgage, deed of trust or other agreement or
             instrument to which the Pollution Control Corporation is now a
             party or by which it is now bound, or any order, rule or
             regulation applicable to the Pollution Control Corporation of
             any court or of any regulatory body or administrative agency
             or other governmental body having jurisdiction over the
             Pollution Control Corporation or over any of its properties,
             or the Constitution or laws of the State of Arizona;

               (d)  No consent, approval, authorization or other order of
             any regulatory body or administrative agency or other
             governmental body is legally required for the Pollution
             Control Corporation's participation in the transactions
             contemplated by this Agreement, except such as may have been
             obtained or may be required under the securities laws of any
             jurisdiction; and

               (e)  The Pollution Control Corporation has found and
             determined that all requirements of the Act with respect to
             the issuance of the Bonds and the execution and delivery of
             the Indenture and this Agreement have been complied with and
             that the refinancing of the Company's share of the cost of
             construction of the Facilities by issuing the Bonds and
             entering into the Indenture and this Agreement will be in
             furtherance of the purposes of the Act.

             SECTION 2.02.  Representations and Warranties of the Company. 
          The Company makes the following representations and warranties as
          the basis for the undertakings on the part of the Pollution
          Control Corporation contained herein:

               (a)  The Company is a corporation duly organized and
             existing in good standing under the laws of the State of
             Arizona and duly qualified as a foreign corporation in the
             State of New Mexico; 

               (b)  The Company has power to enter into this Agreement and
             to perform and observe the agreements and covenants on its
             part contained herein and by proper corporate action has duly
             authorized the execution and delivery hereof; 

               (c)  The execution and delivery of this Agreement by the
             Company do not, and consummation of transactions contemplated
             hereby and fulfillment of the terms hereof by the Company will
             not, result in a breach of any of the terms or provisions of,
             or constitute a default under, any indenture, mortgage, deed
             of trust or other agreement or instrument to which the Company
             is a party or by which it is now bound, or the Restated
             Articles of Incorporation or by-laws of the Company, or any
             order, rule or regulation applicable to the Company of any
             court or of any regulatory body or administrative agency or
             other governmental body having jurisdiction over the Company
             or over any of its properties, or any statute of any
             jurisdiction applicable to the Company; 

               (d)  The Arizona Corporation Commission has approved all
             matters relating to the Company's participation in the
             transactions contemplated by this Agreement which require said
             approval, and no other consent, approval, authorization or
             other order of any regulatory body or administrative agency or
             other governmental body is legally required for the Company's
             participation therein, except such as may have been obtained
             or may be required under the securities laws of any
             jurisdiction;

               (e)  The Facilities to be refinanced constitute "pollution
             control facilities" as such term is defined in the Act; and

               (f)  All of the proceeds of the Bonds (exclusive of accrued
             interest, if any, paid by the initial purchasers of such Bonds
             upon delivery thereof) will be expended to refinance the
             Facilities through the payment or redemption of the 1996
             Bonds, or provisions therefor.


                                     ARTICLE III

                                    THE FACILITIES

             SECTION 3.01.  Facilities; Property of the Company.  An
          undivided interest in the Facilities shall be the property of the
          Company and the Pollution Control Corporation shall have no
          right, title or interest in the Facilities.

             SECTION 3.02.  Revision of Plans and Specifications.  The
          Company may consent to one or more revisions to the plans and
          specifications for the Facilities (including without limitation
          any changes therein, additions thereto, substitutions therefor
          and deletions therefrom), at any time and from time to time prior
          to the Completion Date in any respect; provided, however, that,
          if any such revision shall render inaccurate the description of
          the Facilities contained in Exhibit A hereto, the Company shall
          deliver to the Pollution Control Corporation and the Trustee (a)
          a revised Exhibit A containing a description of the Facilities as
          revised, the accuracy of which shall have been certified by an
          Authorized Company Representative, and (b) an opinion of Bond
          Counsel to the effect that the Facilities as described in the
          revised Exhibit A are such that the expenditure of the proceeds
          of the Bonds pursuant to this Agreement will not, in and of
          itself, impair the validity of the Bonds under the Act or the
          exclusion from gross income for federal tax purposes of interest
          on the Bonds.  A revision of Exhibit A hereto pursuant to this
          Section 3.02 shall not constitute an amendment, change or
          modification of this Agreement within the meaning of Article XII
          of the Indenture.

             SECTION 3.03.  Maintenance of Facilities; Remodeling.  The
          Company shall at all times exercise all of its rights, powers,
          elections and options under the Plant Agreements to cause the
          Facilities, and every element and unit thereof, to be maintained,
          preserved and kept in thorough repair, working order and
          condition and to cause all needful and proper repairs and
          renewals thereto to be made; provided, however, that the Company
          may exercise all of its rights, powers, elections and options
          under the Plant Agreements to cause the operation of the
          Facilities, or any element or unit thereof, to be discontinued
          if, in the judgment of the Company, it is no longer advisable to
          operate the same, or if the Company intends to sell or dispose of
          the same and within a reasonable time shall endeavor to
          effectuate such sale or disposition.

             After the Completion Date, the Company may, subject to the
          provisions of Section 6.05 hereof, at its own expense consent to
          the remodeling of the Facilities or to the making of such
          substitutions, modifications and improvements to the Facilities
          from time to time as it, in its discretion, may deem to be
          desirable for its uses and purposes, which remodeling,
          substitutions, modifications and improvements shall be included
          under the terms of this Agreement as part of the Facilities.  

             SECTION 3.04.  Insurance.  The Company shall exercise all of
          its rights, powers, elections and options under the Plant
          Agreements to keep the Facilities insured against fire and other
          risks to the extent usually insured against by companies owning
          and operating similar property, by reputable insurance companies
          or, at the Company's election, with respect to all or any element
          or unit of the Facilities, by means of an adequate insurance fund
          set aside and maintained by it out of its own earnings or in
          conjunction with other companies through an insurance fund, trust
          or other agreement or, by means of unfunded self-insurance as may
          be reasonable and customary by companies owning and operating
          similar property.  All proceeds of such insurance shall be for
          the account of the Company.  

             SECTION 3.05.  Condemnation.  The Company shall be entitled to
          the entire proceeds of any condemnation award or portion thereof
          made for damages to or takings of the Facilities or other
          property of the Company.  

             SECTION 3.06.  Termination of Construction.   Anything in this
          Agreement to the contrary notwithstanding, the Company shall have
          the right at any time to exercise all of its rights, powers,
          elections and options under the Plant Agreements to terminate the
          construction of the Facilities, in whole, if the Company shall
          have determined that the continued construction or operation of
          the Facilities, in whole, is impracticable, uneconomical or
          undesirable for any reason.


                                      ARTICLE IV

              ISSUANCE OF THE BONDS; THE LOANS; DISPOSITION OF PROCEEDS
                                     OF THE BONDS

             SECTION 4.01.  Issuance of the Bonds.  The Pollution Control
          Corporation shall issue the Bonds under and in accordance with
          the Indenture, subject to the provisions of the bond purchase
          agreement among the Pollution Control Corporation, the initial
          purchaser or purchasers of the Bonds and the Company.  The
          Company hereby approves the issuance of the Bonds and all terms
          and conditions thereof.  

             SECTION 4.02.  Issuance of Other Obligations.  The Pollution
          Control Corporation and the Company expressly reserve the right
          to enter into, to the extent permitted by law, but shall not be
          obligated to enter into, an agreement or agreements other than
          this Agreement with respect to the issuance by the Pollution
          Control Corporation, under an indenture or indentures other than
          the Indenture, of obligations to provide additional funds to pay
          the cost of construction of the Facilities or obligations to
          refund all or any principal amount of the Bonds, or any
          combination thereof.  

             SECTION 4.03.  The Loan; Disposition of Bond Proceeds.  The
          Pollution Control Corporation and the Company shall enter into
          escrow arrangements with the trustee for the 1996 Bonds and shall
          cause the proceeds of the Bonds, other than accrued interest, if
          any, paid by the initial purchaser or purchasers thereof, to be
          deposited in escrow with such trustee to be applied to the
          payment of the 1996 Bonds upon the redemption thereof.

             The Pollution Control Corporation shall establish the Bond
          Fund with the Trustee in accordance with Section 4.01 of the
          Indenture.

             SECTION 4.04.  Investment of Moneys in Funds and Accounts. 
          The Company and the Pollution Control Corporation agree that any
          moneys held in any fund or account created by the Indenture shall
          be invested as provided in the Indenture.


                                      ARTICLE V

                           LOAN PAYMENTS; OTHER OBLIGATIONS

             SECTION 5.01.  Loan Payments.  In consideration of the
          issuance of the Bonds and the disposition of the proceeds thereof
          as contemplated in Section 4.03 hereof, the Company shall pay, or
          cause to be paid, to the Trustee for the account of the Pollution
          Control Corporation an amount equal to the aggregate principal
          amount of the Bonds from time to time Outstanding and, as
          interest on its obligation to pay such amount, an amount equal to
          premium, if any, and interest on such Bonds, such amounts to be
          paid in installments due on the dates, in the amounts and in the
          manner provided in the Indenture for the Pollution Control
          Corporation to cause amounts to be deposited in the Bond Fund for
          the payment of the principal of and premium, if any, and interest
          on the Bonds whether at stated maturity, upon redemption or
          acceleration or otherwise; provided, however, that the obligation
          of the Company to make any such payment hereunder shall be
          reduced by the amount of any reduction under the Indenture of the
          amount of the corresponding payment required to be made by the
          Pollution Control Corporation thereunder.

             SECTION 5.02.  Payments Assigned; Obligation Absolute.  It is
          understood and agreed that all Loan Payments are, by the
          Indenture, to be pledged by the Pollution Control Corporation to
          the Trustee, and that all rights and interest of the Pollution
          Control Corporation hereunder (except for the Pollution Control
          Corporation's rights under Sections 5.03, 5.04, 6.03 and 8.05
          hereof and any rights of the Pollution Control Corporation to
          receive notices, certificates, requests, requisitions and other
          communications hereunder) are to be pledged and assigned to the
          Trustee.  The Company assents to such pledge and assignment and
          agrees that the obligation of the Company to make the Loan
          Payments shall be absolute, irrevocable and unconditional and
          shall not be subject to cancellation, termination or abatement,
          or to any defense other than payment or to any right of set-off,
          counterclaim or recoupment arising out of any breach by the
          Pollution Control Corporation or the Trustee or any other party
          under this Agreement, the Indenture or otherwise, or out of any
          obligation or liability at any time owing to the Company by the
          Pollution Control Corporation, the Trustee or any other party,
          and, further, that the Loan Payments and the other payments due
          hereunder shall continue to be payable at the times and in the
          amounts herein and therein specified, whether or not the
          Facilities, or any portion thereof, shall have been completed or
          shall have been destroyed by fire or other casualty, or title
          thereto, or the use thereof, shall have been taken by the
          exercise of the power of eminent domain, and that there shall be
          no abatement of or diminution in any such payments by reason
          thereof, whether or not the Facilities shall be used or useful,
          whether or not any applicable laws, regulations or standards
          shall prevent or prohibit the use of the Facilities, or for any
          other reason, all of the foregoing being subject, however, to the
          provisions of Sections 6.01 and 7.01 hereof.

             SECTION 5.03.  Payment of Expenses.  The Company shall pay all
          Administration Expenses, including, without limitation,
          Administration Expenses incurred at and subsequent to the time
          the Bonds are deemed to have been paid in accordance with Article
          VIII of the Indenture.  The payment of the compensation and the
          reimbursement of expenses and advances of the Trustee, of the
          paying agent, any co-paying agent and the registrar under the
          Indenture shall be made directly to such entities.  

             SECTION 5.04.  Indemnification.  The Company releases the
          Pollution Control Corporation, the Trustee and their directors,
          officers, employees and agents from, agrees that the Pollution
          Control Corporation and the Trustee shall not be liable for, and
          agrees to indemnify and hold the Pollution Control Corporation,
          the Trustee and any predecessor Trustee and their directors,
          officers, employees and agents free and harmless from, any
          liability (including, without limitation, attorneys' and other
          agents' fees and expenses) for any loss or damage to property or
          any injury to or death of any person that may be occasioned by
          any cause whatsoever pertaining to the Facilities, except in any
          case as a result of the negligence or bad faith or willful
          misconduct of the party otherwise to be indemnified.  

             The Company will indemnify and hold the Pollution Control
          Corporation, the Trustee and any predecessor Trustee free and
          harmless from any loss, claim, damage, tax, penalty, liability,
          disbursement, litigation expenses, attorneys' and other agents'
          fees and expenses or court costs arising out of, or in any way
          relating to, the execution or performance of this Agreement, the
          issuance or sale of the Bonds, actions taken under the Indenture
          or any other cause whatsoever pertaining to the Facilities,
          except in any case as a result of the negligence or bad faith or
          willful misconduct of the party otherwise to be indemnified.  

             The Company will indemnify and hold the Pollution Control
          Corporation and its directors, officers, employees and agents
          free and harmless from any loss, claim, damage, tax, penalty,
          liability, disbursement, litigation expenses, attorney's fees and
          expenses or court costs arising out of or in any way relating to
          any untrue statement or alleged untrue statement of any material
          fact or omission or alleged omission to state a material fact
          necessary to make the statements made, in light of the
          circumstances under which they were made, not misleading in any
          official statement or other offering material utilized in
          connection with the sale of any bonds.

             SECTION 5.05.  Payment of Taxes; Discharge of Liens.  The
          Company shall: (a) pay, or make provision for payment of, all
          lawful taxes and assessments, including income, profits, property
          or excise taxes, if any, or other municipal or governmental
          charges, levied or assessed by any federal, state or municipal
          government or political body upon the Facilities or any part
          thereof or upon the Pollution Control Corporation with respect to
          the Loan Payments, when the same shall become due; and (b) pay or
          cause to be satisfied and discharged or make adequate provision
          to satisfy and discharge, within sixty (60) days after the same
          shall accrue, any lien or charge upon the Loan Payments, and all
          lawful claims or demands for labor, materials, supplies or other
          charges which, if unpaid, might be or become a lien upon such
          amounts; provided, that, if the Company shall first notify the
          Pollution Control Corporation and the Trustee of its intention so
          to do, the Company may in good faith contest any such lien or
          charge or claims or demands in appropriate legal proceedings, and
          in such event may permit the items so contested and identified as
          such by the Company to remain undischarged and unsatisfied during
          the period of such contest and any appeal therefrom, unless the
          Trustee shall notify the Company in writing that, in the opinion
          of counsel to the Trustee, based upon material facts disclosed to
          the Trustee without any duty of investigation, by nonpayment of
          any such items the lien of the Indenture as to the Loan Payments
          will be materially endangered, in which event the Company shall
          promptly pay and cause to be satisfied and discharged all such
          unpaid items.  The Pollution Control Corporation shall cooperate
          fully with the Company in any such contest.


                                      ARTICLE VI

                                  SPECIAL COVENANTS

             SECTION 6.01.  Maintenance of Corporate Existence.  Except as
          permitted in this Section 6.01, the Company shall maintain its
          corporate existence, shall not sell, transfer or otherwise
          dispose of all of its assets, as or substantially as an entirety,
          and shall not consolidate with or merge with or into another
          corporation.  The Company may consolidate with or merge into
          another corporation incorporated under the laws of the United
          States of America, any state thereof or the District of Columbia,
          or sell, transfer or otherwise dispose of all of its assets, as
          or substantially as an entirety, to any Person, if the surviving
          or resulting corporation (if other than the Company) or the
          transferee Person, as the case may be, prior to or simultaneously
          with such merger, consolidation, sale, transfer or disposition,
          assumes, by delivery to the Trustee and the Pollution Control
          Corporation of an instrument in writing satisfactory in form to
          the Trustee, all the obligations of the Company under this
          Agreement, including, without limitation, the obligations of the
          Company under Section 5.01 hereof.  Upon such an assumption
          following any such sale, transfer or other disposition of assets,
          the Company shall be released and discharged from all liability
          in respect of all obligations under this Agreement. 
          Notwithstanding the foregoing, in the case of any such sale,
          transfer or other disposition of assets, which do not include the
          Facilities, the Company shall remain liable in respect of all
          obligations under this Agreement other than the obligations under
          Section 5.01 hereof, and the transferee shall not be required to
          assume any obligations hereunder other than the obligations under
          Section 5.01 hereof; provided, however, that the transferee shall
          be required to assume all such other obligations unless the
          Company shall have delivered to the Pollution Control Corporation
          and the Trustee an opinion of Bond Counsel to the effect that the
          non-assumption by the transferee of such other obligations will
          not impair the validity under the Act of the Bonds and will not
          adversely affect the exclusion from gross income for federal tax
          purposes of interest on the Bonds.

             If consolidation, merger or sale, transfer or other
          disposition is made as permitted by this Section 6.01, the
          provisions of this Section 6.01 shall continue in full force and
          effect and no further consolidation, merger or sale or other
          transfer shall be made except in compliance with the provisions
          of this Section 6.01.

             Anything in this Agreement to the contrary notwithstanding,
          the sale, transfer or other disposition by the Company of all of
          its facilities (a) for the generation of electric energy, (b) for
          the transmission of electric energy or (c) for the distribution
          of electric energy, in each case considered alone, or all of its
          facilities described in clauses (a) and (b), considered together,
          or all of its facilities described in clauses (b) and (c),
          considered together, shall in no event be deemed to constitute a
          sale, transfer or other disposition of all the properties of the
          Company, as or substantially as an entirety, unless, immediately
          following such sale, transfer or other disposition, the Company
          shall own no properties in the other such categories of property
          not so sold, transferred or otherwise disposed of.  The character
          of particular facilities shall be determined by reference to the
          Uniform System of Accounts prescribed for public utilities and
          licensees subject to the Federal Power Act, as amended, to the
          extent applicable.

             SECTION 6.02.  Permits or Licenses.  In the event that it may
          be necessary for the proper performance of this Agreement on the
          part of the Company or the Pollution Control Corporation that any
          application or applications for any permit or license to do or to
          perform certain things be made to any governmental or other
          agency by the Company or the Pollution Control Corporation, the
          Company and the Pollution Control Corporation each shall, upon
          the request of either, execute such application or applications. 


             SECTION 6.03.  Pollution Control Corporation's Access to
          Facilities.  The Pollution Control Corporation shall have the
          right, upon appropriate prior notice to the Company, to have
          reasonable access to the Facilities during normal business hours
          for the purpose of making examinations and inspections of the
          same.  

             SECTION 6.04.  Tax-Exempt Status of Interest on Bonds. (a)  It
          is the intention of the parties hereto that interest on the Bonds
          shall be and remain tax-exempt, and to that end the covenants and
          agreements of the Pollution Control Corporation and the Company
          in this Section 6.04 and the Tax Agreement are for the benefit of
          the Owners from time to time of the Bonds.

               (b)  Each of the Company and the Pollution Control
             Corporation covenants and agrees for the benefit of the Owners
             from time to time of the Bonds that it will not directly or
             indirectly use or permit the use of (to the extent within its
             control) the proceeds of any of the Bonds or any other funds,
             or take or omit to take any action, if and to the extent such
             use, or the taking or omission to take such action, would
             cause any of the Bonds to be "arbitrage bonds" within the
             meaning of Section 148 of the Code or otherwise subject to
             federal income taxation by reason of Section 103 and 141
             through 150 of the Code or Section 103 of the 1954 Code and
             Title XIII of the Tax Reform Act of 1986, as applicable, and
             any applicable regulations promulgated thereunder.  To such
             ends, the Pollution Control Corporation and the Company will
             comply with all requirements of such Section 148 to the extent
             applicable to the Bonds.  In the event that at any time the
             Pollution Control Corporation or the Company is of the opinion
             that for purposes of this Section 6.04(b) it is necessary to
             restrict or limit the yield on the investment of any moneys
             held by the Trustee under the Indenture, the Pollution Control
             Corporation or the Company shall so notify the Trustee in
             writing.

               Without limiting the generality of the foregoing, the
             Company and the Pollution Control Corporation agree that there
             shall be paid from time to time all amounts required to be
             rebated to the United States of America pursuant to Section
             148(f) of the Code and any applicable Treasury Regulations. 
             This covenant shall survive payment in full or defeasance of
             the Bonds and the satisfaction and discharge of the Indenture. 
             The Company specifically covenants to pay or cause to be paid
             the Rebate Requirement as defined and described in the Tax
             Agreement.

               (c)  The Pollution Control Corporation certifies and
             represents that it has not taken, and the Pollution Control
             Corporation covenants and agrees that it will not take, any
             action which results in interest paid on the Bonds being
             included in gross income of the Owners of the Bonds for
             federal tax purposes pursuant to Sections 103 and 141 of the
             Code or to Section 103 of the 1954 Code and Title XIII of the
             Tax Reform Act of 1986, as applicable, and any regulations
             thereunder; and the Company certifies and represents that it
             has not taken or (to the extent within its control) permitted
             to be taken, and the Company covenants and agrees that it will
             not take or (to the extent within its control) permit to be
             taken any action which will cause the interest on the Bonds to
             become includable in gross income for federal income tax
             purposes; provided, however, that neither the Company nor the
             Pollution Control Corporation shall be deemed to have violated
             these covenants if the interest on any of the Bonds becomes
             taxable to a person solely because such person is a
             "substantial user" of the Facilities or a "related person"
             within the meaning of Section 103(b)(13) of the 1954 Code and
             provided, further, that none of the covenants and agreements
             herein contained shall require either the Company or the
             Pollution Control Corporation to enter an appearance or
             intervene in any administrative, legislative or judicial
             proceeding in connection with any changes in applicable laws,
             rules or regulations or in connection with any decisions of
             any court or administrative agency or other governmental body
             affecting the taxation of interest on the Bonds.  The Company
             acknowledges having read Section 7.08 of the Indenture and
             agrees to perform all duties imposed on it by such Section
             7.08, by this Section and by the Tax Agreement.  Insofar as
             Section 7.08 of the Indenture and the Tax Agreement impose
             duties and responsibilities on the Company, they are
             specifically incorporated herein by reference.

               (d)  Notwithstanding any provision of this Section 6.04 and
             Section 7.08 of the Indenture, if the Company shall provide to
             the Pollution Control Corporation and the Trustee an opinion
             of Bond Counsel to the effect that any specified action
             required under this Section 6.04 and Section 7.08 of the
             Indenture is no longer required or that some further or
             different action is required to maintain the tax-exempt status
             of interest on the Bonds, the Company, the Trustee and the
             Pollution Control Corporation may conclusively rely upon such
             opinion in complying with the requirements of this Section
             6.04, and the covenants hereunder shall be deemed to be
             modified to that extent.

             SECTION 6.05.  Use of Facilities.  So long as any Bonds are
          Outstanding and the Facilities are operated by or for the benefit
          of the Company, the Company shall exercise all of its rights,
          powers, elections and options under the Plant Agreements to cause
          the Facilities to be used for purposes contemplated by the Act
          and in the Tax Agreement.

             SECTION 6.06.  Financing Statements.  The Company shall file
          and record, or cause to be filed and recorded, all financing
          statements and continuation statements referred to in Section
          7.07 of the Indenture.

                                     ARTICLE VII

                           ASSIGNMENT, LEASING AND SELLING

             SECTION 7.01.  Conditions.  The Company's interest in this
          Agreement may be assigned as a whole or in part, and its interest
          in the Facilities may be leased, sold, transferred or otherwise
          disposed of by the Company as a whole or in part (whether an
          interest in a specific element or unit or an undivided interest),
          to any Person; provided, however, that no such assignment, lease,
          sale, transfer or other disposition (a) shall relieve the Company
          from its primary liability for its obligations under Section 5.01
          hereof or (b) shall be made unless the assignee, lessee,
          purchaser or other transferee, as the case may be, prior to or
          simultaneously with such assignment, lease, sale, transfer or
          other disposition, assumes, by delivery of an instrument in
          writing satisfactory in form to the Trustee and the Pollution
          Control Corporation, all other obligations of the Company
          hereunder to the extent of the interest assigned, leased, sold,
          transferred or otherwise disposed of, and the Company shall be
          released of and discharged from such obligations to the extent so
          assumed.  Notwithstanding the foregoing, (a) if (i) the Company's
          interest in this Agreement shall be assigned as a whole or in
          undivided part, (ii) the Company's interest in the Facilities
          shall be leased as a whole or in undivided part and the term of
          such leasehold or the term of any extension or extensions thereof
          at the option of the Company shall extend beyond the maturity
          date of the Bonds or (iii) the Company's interest in the
          Facilities shall be sold, transferred or otherwise disposed of as
          a whole or in undivided part, and (b) in the event that the
          assignee, lessee, purchaser or other transferee shall assume the
          obligations of the Company under Section 5.01 hereof for the
          remaining term of this Agreement, to the extent of such
          assignment, lease, sale, transfer or other disposition, the
          Company shall be released from and discharged of all liability in
          respect of such obligations to the extent so assumed (but only to
          such extent); provided, however, that the release and discharge
          of the Company pursuant to clause (b) shall be conditioned upon
          the delivery by the Company to the Pollution Control Corporation
          and the Trustee of a certificate of an Independent Expert (as
          hereinafter defined) describing the interests so assigned,
          leased, sold, transferred or otherwise disposed of, together with
          all other rights, interests, assets and/or properties assigned,
          leased, sold, transferred or otherwise disposed of by the Company
          to the same Person in the same or a related transaction, stating
          that such rights, interests, assets and/or properties so
          described constitute facilities for the generation, transmission 
          and/or distribution of electric energy and stating that, in the
          opinion of such Independent Expert, the Fair Value (as
          hereinafter defined) of such rights, interests, assets and/or
          properties as the Person acquiring the same is not less than an
          amount equal to 10/7 of the sum of (x) the aggregate principal
          amount of the Bonds then Outstanding and (y) the outstanding
          principal amount of all other obligations of the Company
          representing indebtedness for borrowed money or for the deferred
          purchase price of property which are being assumed by such
          Person; provided, further, that after any such assumption,
          release and discharge as aforesaid, the Company may again assume
          such obligations under Section 5.01 hereof, in whole or in part,
          at any time and from time to time, and, to the extent of any such
          assumption by the Company (but only to such extent), the
          aforesaid assignee, lessee, purchaser or other transferee shall
          be released from and discharged of all liability in respect of
          such obligations.

             Anything herein to the contrary notwithstanding, the Company
          shall not make any assignment, lease or sale as provided in the
          immediately preceding paragraph unless it shall have furnished to
          the Pollution Control Corporation and the Trustee an opinion of
          Bond Counsel to the effect that the proposed assignment, lease or
          sale will not impair the validity under the Act of the Bonds and
          will not adversely affect the exclusion of interest on the Bonds
          from gross income for federal tax purposes.

             After any lease, sale, transfer or other disposition of any
          element or unit of the Facilities, or any interest therein, the
          Company may, at its option, cause such element or unit, or
          interest therein, to no longer be deemed to be part of the
          Facilities for the purposes of this Agreement by delivering to
          the Pollution Control Corporation and the Trustee the agreements
          or other documents required pursuant to Section 7.02 hereof
          together with an instrument signed by an Authorized Company
          Representative stating that such element or unit, or interest
          therein, shall no longer be deemed to be part of the Facilities
          for the purposes of this Agreement.  

             For purposes of this Section 701:

               (a)  "Independent Expert" means a Person which (i) is an
             engineer, appraiser or other expert and which, with respect to
             any certificate to be delivered pursuant to this Section, is
             qualified to pass upon the matter set forth in such
             certificate and (ii)(A) is in fact independent, (B) does not
             have any direct material financial interest in the transferee
             or in any obligor upon the Bonds or under this Agreement or in
             any affiliate of the transferee or any such obligor, (C) is
             not connected with the transferee or any such obligor as an
             officer, employee, promoter, underwriter, trustee, partner,
             director or any person performing similar functions and (D) is
             approved by the Trustee in the exercise of reasonable care;
             for purposes of this definition "engineer" means a Person
             engaged in the engineering profession or otherwise qualified
             to pass upon engineering matters (including, but not limited
             to, a Person licensed as a professional engineer, whether or
             not then engaged in the engineering profession); and for
             purposes of this definition "appraiser" means a Person engaged
             in the business of appraising property or otherwise qualified
             to pass upon the Fair Value or fair market value of property.

               (b)  "Fair Value" means the fair value of the interests,
             rights, assets and/or properties assigned, leased, sold,
             transferred or otherwise disposed of (but, in the case of a
             lease, only to the extent of such lease) as may be determined
             by reference to (i) except in the case of a lease, the amount
             which would be likely to be obtained in an arm's-length
             transaction with respect to such interests, rights, assets
             and/or properties between an informed and willing buyer and an
             informed and willing seller, under no compulsion,
             respectively, to buy or sell, (ii) in the case of a lease, the
             amount (discounted to present value at a rate not lower than
             the taxable equivalent of the yield to maturity of the Bonds
             based on prevailing market prices immediately prior to the
             first public announcement of the proposed transaction) which
             would be likely to be obtained in an arm's-length transaction
             with respect to such interests, rights, assets and/or
             properties between an informed and willing lessee and an
             informed and willing lessor, neither under any compulsion to
             lease; (iii) the amount of investment with respect to such
             interests, rights, assets and/or properties which, together
             with a reasonable return thereon, would be likely to be
             recovered through ordinary business operations or otherwise,
             (iv) the cost, accumulated depreciation and replacement cost
             with respect to such interests, rights, assets and/or
             properties and/or (v) any other relevant factors; provided,
             however, that (x) Fair Value shall be determined without
             deduction for any mortgage, deed of trust, pledge, security
             interest, encumbrance, lease, reservation, restriction,
             servitude, charge or similar right or any other lien of any
             kind and (y) the Fair Value to the transferee of any property
             shall not reflect any reduction relating to the fact that such
             property may be of less value to a Person which is not the
             owner, lessee or operator of the property or any portion
             thereof than to a Person which is such owner, lessee or
             operator.  Fair Value may be determined, without physical
             inspection, by the use of accounting and engineering records
             and other data maintained by the Company or the transferee or
             otherwise available to the Expert certifying the same.

             SECTION 7.02.  Instrument Furnished to Pollution Control
          Corporation and Trustee.  The Company shall, within fifteen (15)
          days after the delivery thereof, furnish to the Pollution Control
          Corporation and the Trustee a true and complete copy of the
          agreements or other documents effectuating any such assignment,
          lease, sale, transfer or other disposition.  

             SECTION 7.03.  Limitation.  This Agreement shall not be
          assigned nor shall the Facilities be leased, sold, transferred or
          otherwise disposed of, in whole or in part, except as provided in
          this Article VII or in Section 6.01 or 5.02 hereof.  This Article
          VII shall not apply to any sale, transfer or other disposition by
          the Company of all of its assets, as or substantially as an
          entirety, as contemplated in Section 6.01.

                                     ARTICLE VIII

                            EVENTS OF DEFAULT AND REMEDIES

             SECTION 8.01.  Events of Default.  Each of the following
          events shall constitute and is referred to in this Agreement as
          an "Event of Default": 

               (a)  a failure by the Company to make any Loan Payment,
             which failure shall have resulted in an "Event of Default"
             under clause (a) or (b) of Section 9.01 of the Indenture; 

               (b)  a failure by the Company to pay when due any amount
             required to be paid under this Agreement or to observe and
             perform any covenant, condition or agreement on its part to be
             observed or performed (other than a failure described in
             clause (a) above), which failure shall continue for a period
             of sixty (60) days after written notice, specifying such
             failure and requesting that it be remedied, shall have been
             given to the Company by the Pollution Control Corporation or
             the Trustee, unless the Pollution Control Corporation and the
             Trustee shall agree in writing to an extension of such period
             prior to its expiration; provided, however, that the Pollution
             Control Corporation and the Trustee shall be deemed to have
             agreed to an extension of such period if corrective action is
             initiated by the Company within such period and is being
             diligently pursued; or 

               (c)  the dissolution or liquidation of the Company, or
             failure by the Company promptly to lift any execution,
             garnishment or attachment of such consequence as will impair
             its ability to make any payments under this Agreement, or the
             entry of an order for relief by a court of competent
             jurisdiction in any proceeding for its liquidation or
             reorganization under the provisions of any bankruptcy act or
             under any similar act which may be hereafter enacted, or an
             assignment by the Company for the benefit of its creditors, or
             the entry by the Company into an agreement of composition with
             its creditors (the term "dissolution or liquidation of the
             Company," as used in this clause, shall not be construed to
             include the cessation of the corporate existence of the
             Company resulting either from a merger or consolidation of the
             Company into or with another corporation or a dissolution or
             liquidation of the Company following a transfer of all or
             substantially all its assets as an entirety, under the
             conditions permitting such actions contained in Section 6.01
             hereof).  

             SECTION 8.02.  Force Majeure.  The provisions of Section 8.01
          hereof are subject to the following limitations: if by reason of
          acts of God; strikes, lockouts or other industrial disturbances;
          acts of public enemies; orders of any kind of the government of
          the United States or of the State of Arizona, or any department,
          agency, political subdivision, court or official of any of them,
          or any civil or military authority; insurrections; riots;
          epidemics; landslides; lightning; earthquakes; volcanoes; fires;
          hurricanes; tornadoes; storms; floods; washouts; droughts;
          arrests; restraint of government and people; civil disturbances;
          explosions; breakage or accident to machinery; partial or entire
          failure of utilities; or any cause or event not reasonably within
          the control of the Company, the Company is unable in whole or in
          part to carry out any one or more of its agreements or
          obligations contained herein, other than its obligations under
          Sections 5.01, 5.03, 5.05, and 6.01 hereof, the Company shall not
          be deemed in default by reason of not carrying out said agreement
          or agreements or performing said obligation or obligations during
          the continuance of such inability.  The Company shall make
          reasonable effort to remedy with all reasonable dispatch the
          cause or causes preventing it from carrying out its agreements;
          provided, that the settlement of strikes, lockouts and other
          industrial disturbances shall be entirely within the discretion
          of the Company, and the Company shall not be required to make
          settlement of strikes, lockouts and other industrial disturbances
          by acceding to the demands of the opposing party or parties when
          such course is in the judgment of the Company unfavorable to the
          Company.

             SECTION 8.03.  Remedies.  (a)  Upon the occurrence and
          continuance of any Event of Default described in clause (a) of
          Section 8.01 hereof, and further upon the condition that, in
          accordance with the terms of the Indenture, the Bonds shall have
          been declared to be immediately due and payable pursuant to any
          provision of the Indenture, the Loan Payments shall, without
          further action, become and be immediately due and payable.  

             Any waiver of any "Event of Default" under the Indenture and a
          rescission and annulment of its consequences shall constitute a
          waiver of the corresponding Event or Events of Default under this
          Agreement and a rescission and annulment of the consequences
          thereof.  

             (b)  Upon the occurrence and continuance of any Event of
          Default, the Pollution Control Corporation, or the Trustee with
          respect to the rights of the Pollution Control Corporation
          assigned to the Trustee by the Indenture, may take any action at
          law or in equity to collect any payments then due and thereafter
          to become due, or to enforce performance and observance of any
          obligation, agreement or covenant of the Company hereunder.  

             (c)  Any amounts collected by the Trustee from the Company
          pursuant to this Section 8.03 shall be applied in accordance with
          the Indenture.  

             SECTION 8.04.  No Remedy Exclusive.  No remedy conferred upon
          or reserved to the Pollution Control Corporation hereby is
          intended to be exclusive of any other available remedy or
          remedies, but each and every such remedy shall be cumulative and
          shall be in addition to every other remedy given hereunder or now
          or hereafter existing at law or in equity or by statute.  No
          delay or omission to exercise any right or power accruing upon
          any default shall impair any such right or power or shall be
          construed to be a waiver thereof, but any such right or power may
          be exercised from time to time and as often as may be deemed
          expedient.  In order to entitle the Pollution Control Corporation
          to exercise any remedy reserved to it in this Article VIII, it
          shall not be necessary to give any notice, other than such notice
          as may be herein expressly required.

             SECTION 8.05.  Reimbursement of Attorneys' and Agents' Fees. 
          If the Company shall default under any of the provisions hereof
          and the Pollution Control Corporation or the Trustee shall employ
          attorneys or agents or incur other reasonable expenses for the
          collection of payments due hereunder or for the enforcement of
          performance or observance of any obligation or agreement on the
          part of the Company contained herein, the Company will on demand
          therefor reimburse the Pollution Control Corporation or the
          Trustee and any predecessor Trustee, as the case may be, for the
          reasonable fees of such attorneys and such other reasonable
          expenses so incurred.  

             SECTION 8.06.  Waiver of Breach.  In the event any obligation
          created hereby shall be breached by either of the parties and
          such breach shall thereafter be waived by the other party, such
          waiver shall be limited to the particular breach so waived and
          shall not be deemed to waive any other breach hereunder.  In view
          of the assignment of certain of the Pollution Control
          Corporation's rights and interest hereunder to the Trustee, the
          Pollution Control Corporation shall have no power to waive any
          breach hereunder by the Company in respect of such rights and
          interest without the consent of the Trustee, and the Trustee may
          exercise any of the rights of the Pollution Control Corporation
          hereunder.  


                                      ARTICLE IX

                                 REDEMPTION OF BONDS

             SECTION 9.01.  Redemption of Bonds.  The Pollution Control
          Corporation shall take, or cause to be taken, the actions
          required by the Indenture to discharge the lien created thereby
          through the redemption, or provision for payment or redemption,
          of all Bonds then Outstanding, or to effect the redemption, or
          provision for payment or redemption, of less than all the Bonds
          then Outstanding, upon receipt by the Pollution Control
          Corporation and the Trustee from the Company of a notice
          designating the principal amount of the Bonds to be redeemed, or
          for the payment or redemption of which provision is to be made,
          and, in the case of redemption of Bonds, or provision therefor,
          specifying the date of redemption and the applicable redemption
          provision of the Indenture.  Such redemption date shall not be
          less than 45 days from the date such notice is given (unless a
          shorter notice is satisfactory to the Trustee).  Unless otherwise
          stated therein, such notice shall be revocable by the Company at
          any time prior to the time at which the Bonds to be redeemed, or
          for the payment or redemption of which provision is to be made,
          are first deemed to be paid in accordance with Article VIII of
          the Indenture.  The Company shall furnish any moneys or
          Government Obligations (as defined in the Indenture) required by
          the Indenture to be deposited with the Trustee or otherwise paid
          by the Pollution Control Corporation in connection with any of
          the foregoing purposes.  

             SECTION 9.02.  Compliance with the Indenture.  Anything in
          this Agreement to the contrary notwithstanding, the Pollution
          Control Corporation and the Company shall take all actions
          required by this Agreement and the Indenture in order to comply
          with any provisions of the Indenture requiring the mandatory
          redemption of Bonds.


                                      ARTICLE X

                                    MISCELLANEOUS

             SECTION 10.01.  Term of Agreement.  This Agreement shall
          remain in full force and effect from the date hereof until the
          right, title and interest of the Trustee in and to the Trust
          Estate (as defined in the Indenture) shall have ceased,
          terminated and become void in accordance with Article VIII of the
          Indenture and until all payments required under this Agreement
          shall have been made.  Notwithstanding the foregoing, the
          covenants contained in Section 5.03, 5.04, Section 6.04 and 8.05
          hereof shall survive the termination of this Agreement.

             SECTION 10.02.  Notices.  Except as otherwise provided in this
          Agreement, all notices, certificates, requests, requisitions and
          other communications hereunder shall be in writing and shall be
          sufficiently given and shall be deemed given when mailed by
          registered mail, postage prepaid, addressed as follows: if to the
          Pollution Control Corporation, c/o Mangum, Wall, Stoops & Warden,
          222 East Birch Avenue, Flagstaff, Arizona 86001, Attention:
          President; if to the Company, at 220 West Sixth Street, Tucson,
          Arizona 85702, Attention:  Treasurer; and if to the Trustee, at
          such address as shall be designated by it in the Indenture.  A
          copy of each notice, certificate, request or other communication
          given hereunder to the Pollution Control Corporation, the
          Company, or the Trustee shall also be given to the others.  The
          Pollution Control Corporation, the Company, and the Trustee may,
          by notice given hereunder, designate any further or different
          addresses to which subsequent notices, certificates, requests or
          other communications shall be sent.  

             SECTION 10.03.  Parties in Interest.  This Agreement shall
          inure to the benefit of and shall be binding upon the Pollution
          Control Corporation, the Company and their respective successors
          and assigns, and no other person, firm or corporation shall have
          any right, remedy or claim under or by reason of this Agreement;
          provided, however, that the rights and remedies granted to the
          Pollution Control Corporation in Article VIII hereof, shall inure
          to the benefit of the Trustee, on behalf of the Owners from time
          to time of the Bonds, and shall be enforceable by the Trustee as
          a third party beneficiary or as assignee of the Pollution Control
          Corporation; and provided, further, that neither the County of
          Coconino, Arizona nor the State of Arizona shall in any event be
          liable for the payment of the principal of or premium, if any, or
          interest on the Bonds or for the performance of any pledge,
          mortgage, obligation or agreement created by or arising out of
          this Agreement or the issuance of the Bonds, and further that
          neither the Bonds nor any such obligation or agreement of the
          Pollution Control Corporation shall be construed to constitute an
          indebtedness of the County of Coconino, Arizona or the State of
          Arizona within the meaning of any constitutional or statutory
          provisions whatsoever, but shall be limited obligations of the
          Pollution Control Corporation payable solely out of the revenues
          derived from this Agreement, or from the sale of the Bonds, or
          from the investment or reinvestment of any of the foregoing, as
          provided herein and in the Indenture.  

             SECTION 10.04.  Amendments.  This Agreement may be amended
          only by written agreement of the parties hereto, subject to the
          limitations set forth herein and in the Indenture.  

             SECTION 10.05.  Counterparts.  This Agreement may be executed
          in any number of counterparts, each of which, when so executed
          and delivered, shall be an original; but such counterparts shall
          together constitute but one and the same Agreement.

             SECTION 10.06.  Severability.  If any clause, provision or
          section of this Agreement shall, for any reason, be held illegal
          or invalid by any court, the illegality or invalidity of such
          clause, provision or section shall not affect any of the
          remaining clauses, provisions or sections hereof, and this
          Agreement shall be construed and enforced as if such illegal or
          invalid clause, provision or section had not been contained
          herein.  In case any agreement or obligation contained in this
          Agreement be held to be in violation of law, then such agreement
          or obligation shall be deemed to be the agreement or obligation
          of the Pollution Control Corporation or the Company, as the case
          may be, to the full extent permitted by law.  

             SECTION 10.07.  Governing Law.  The laws of the State of
          Arizona shall govern the construction and enforcement of this
          Agreement, except that the provisions of Section 13.09 of the
          Indenture, construed as provided in Section 13.07 of the
          Indenture, shall apply to this Agreement as if contained herein.

             SECTION 10.08.  Notice Regarding Cancellation of Contracts. 
          As required by the provisions of Section 38-511, Arizona Revised
          Statutes, as amended, notice is hereby given that political
          subdivisions of the State of Arizona or any of their departments
          or agencies may, within three (3) years of its execution, cancel
          any contract, without penalty or further obligation, made by the
          political subdivisions or any of their departments or agencies on
          or after September 30, 1988, if any person significantly involved
          in initiating, negotiating, securing, drafting or creating the
          contract on behalf of the political subdivisions or any of their
          departments or agencies is, at any time while the contract or any
          extension of the contract is in effect, an employee or agent of
          any other party to the contract in any capacity or a consultant
          to any other party of the contract with respect to the subject
          matter of the contract.  The cancellation shall be effective when
          written notice from the chief executive officer or governing body
          of the political subdivision is received by all other parties to
          the contract unless the notice specifies a later time.

             The Company covenants and agrees not to employ as an employee,
          agent or, with respect to the subject matter of this Agreement, a
          consultant, any person significantly involved in initiating,
          negotiating, securing, drafting or creating such Agreement on
          behalf of the Issuer within three (3) years from the execution
          hereof, unless a waiver is provided by the Pollution Control
          Corporation.

             IN WITNESS WHEREOF, the parties hereto have caused this Loan
          Agreement to be duly executed as of the day and year first above
          written.


                                             COCONINO COUNTY, ARIZONA
                                             POLLUTION CONTROL CORPORATION


          ATTEST:
          				  By    /s/ Bruce J. Nordstrom
					       -----------------------------
                                                President

		/s/ Terrence J. Rice
          -------------------------------
                   Secretary

                                             TUCSON ELECTRIC POWER COMPANY


          ATTEST:                               By   /s/ Kevin Larson      
                                                   ------------------------
                                                    Vice President

           /s/ Vincent Nitido, Jr.    
          ----------------------------
                Assistant Secretary


   <PAGE> 


                                                                  EXHIBIT A

             A portion of the costs of the construction, improvement or
          equipping of the following Facilities will be refinanced with the
          proceeds of the Pollution Control Refunding Revenue Bonds, 1997
          Series B (Tucson Electric Power Company Navajo Project) issued by
          Coconino County, Arizona Pollution Control Corporation and
          referred to in the foregoing Loan Agreement.

                                 --------------------


             The air and water pollution control facilities, sewage
          disposal facilities and solid waste disposal and related
          facilities more particularly described in Exhibit A to the Loan
          and Escrow Agreement, dated as of December 17, 1974, among the
          Coconino County, Arizona Pollution Control Corporation, Tucson
          Gas & Electric Company and Security Pacific National Bank as
          escrow agent, a copy of which is attached as Exhibit A-1. 

   <PAGE> 



                                                                EXHIBIT A-1


                    The air and water pollution control facilities, sewage
          disposal facilities and solid waste disposal facilities in whole
          or in part with the proceeds of the Bonds will consist of the
          following systems:

                    1.   SO2 Removal System.  This System consists of the
          Basic Removal and Disposal System, and other additional features
          for in-plant SO2 removal.  The Basic Removal and Disposal System
          includes several five-chamber alkaline scrubbing modules which
          may be of either a vertical or horizontal design, and associated
          equipment and piping.  The other additional in-plant features
          include by-pass dampers and ductwork modifications, connections
          for steam extraction, induced draft fans sized to overcome the
          loss of velocity of the flue gas caused by the Basic Removal and
          Disposal System, chimney coating to protect the stack from
          corrosion due to lower exit gas temperatures caused by the Basic
          Removal and Disposal System, miscellaneous electrical equipment
          and building space needed to accommodate the other SO2 removal
          equipment, and a supplementary SO2 monitoring system.

                    2.   Particulate Removal System.  This System, which is
          designated to charge and collect particles contained in the flue
          gas produced by the steam generator, includes a sixteen chamber
          hot electrostatic precipitator, the structural supports for the
          precipitator, guillotine dampers, louver isolation dampers
          ductwork, totally enclosed Nova feeders, opacity monitoring
          equipment, induced draft fans sized to accommodate a maximum
          efficiency precipitator, several electrical fields complete with
          casings and hoppers and the structural steel for such fields.

                    3.   Flue Gas Monitoring System.  This System consists
          of chimney equipment common to both SO2 particulate removal
          systems and NOx particulate removal systems, and includes the
          instrumentation and connections necessary to continuously monitor
          and record emissions from the chimneys and a personal hoist and
          related equipment to permit performance testing and maintenance
          of the monitoring equipment.

                    4.   Dust Suppression System.  The equipment comprising
          this System includes (i) enclosures for the coal conveyors and
          transfer towers, (ii) a shed-like enclosure for the tract hopper,
          (iii) several dust collectors, baghouses, rotary screw conveyors,
          separators and a vacuum conveying system to provide dust
          collection in the cascade gallery, silo, sample building and
          plant surge bin areas, (iv) a dust collector with a baghouse and
          rotary screw conveyor for the yard bin area, (v) a dust
          suppression spray system consisting of jet sprays and associated
          equipment located throughout the plant, (vi) enclosures to
          partition the coal gallery area from the boiler turbine area to
          control coal dust, (vii) a fixed header vacuum cleaning system
          for the coal unloading hopper basement and the coal silo gallery,
          and (viii) portable vacuum cleaners for use in the coal
          pulverizer area and the feeder deck area.

                    5.   Sanitary Sewer System.  Two pumping lift stations
          with dual pumps will be installed on the main collector line and
          an aerated tank located below grade will be provided.  Secondary
          treatment by chlorine dosing may be utilized, and treated
          effluent will be discharged to the evaporation pond system.  A
          service water line will be installed to permit the sewage
          treatment area to be washed and the sump weirs to be cleaned. 
          Equipment will be installed downstream from the sewage treatment
          plant to monitor sanitary waster discharges.

                    6.   Waste Water Disposal System.  This System includes
          the Waste Water Collection System, the Water Reclamation Unit,
          Evaporation Ponds, and the Ground Water Monitoring System.

                         (A)  Waste Water Collection System.  The various
                    types of wastewaters from the Project will be collected
                    and transported by the following facilities:  (i) sumps
                    and duplex regenerative sump pumps to receive drainage
                    from the chemical feed area and the anion-cation
                    regeneration area; (ii) the primary softener tank
                    drain, the sand filter backwash drain, the sodium
                    zeolite softener regeneration rinse tank drain, and a
                    special primary water treatment pump to accommodate
                    those drains; (iii) sumps and acid resistant duplex
                    pumps to accommodate the acid trench and chemical tank
                    area; (iv) a surface drain and associated pumps to
                    receive runoff from the coal storage area; (v) special
                    drains, pumps and piping to permit boiler water to by-
                    pass other boiler water drains and to be pumped
                    directly to the evaporation ponds; (vi) special
                    drainage ditches and culverts to direct all surface
                    water runoff from the coal storage area to the
                    evaporation ponds, and (vii) sumps and associated pumps
                    and piping to permit oily wastes to be transported to
                    the evaporation ponds.

                         (B)  Water Reclamation Unit.  This Unit includes
                    several clarifiers and associated pumps and piping to
                    permit clarification of cooling tower blowdown.

                         (C)  Evaporation Ponds.  A series of terraced and
                    diked evaporation ponds will be provided to receive
                    sanitary wastes, surface water runoff and process
                    wastes, and a second series of terraced diked
                    evaporation ponds will be provided to receive only
                    process wastes.

                         (D)  Ground Water Monitoring System.  An extensive
                    observation well and associated equipment will be
                    installed to monitor seepage from the ash disposal area
                    and the evaporation ponds to insure that such seepage
                    does not enter the underground waterway leading to Lake
                    Powell.

                    7.   Bottom Ash and Economizer Ash Disposal System. 
          This System, which causes bottom ash, economizer ash and
          pulverizer rejects to be transported to dewatering bins, water to
          be drained from the dewatering bins into settling tanks, and
          water from the settling tanks to be recirculated and reused for
          ash transport, includes six dewatering bins, two settling tanks,
          three water surge tanks, one operating centrifugal ash pump, one
          standby centrifugal ash pump and associated piping, an auxiliary
          tank for sluicing economizer ash and the necessary control valves
          and piping to transport water to the mixing chamber and
          economizer ash slurry to the bottom ash hopper.

                    8.   Fly Ash Disposal System.  This System, which
          transports fly ash from the precipitation hoppers to the fly ash
          storage silos, includes several pneumatic conveyors and
          associated blowers, filters and pipelines for transporting ash to
          the ash storage silos, two ash storage silos and associated steel
          support structures, stairs and platforms, and eight dustless
          unloaders.

                    9.   Solid Waste Common Systems.  The equipment
          included in the Systems consists of the trucks that will be used
          to haul damp fly ash, bottom ash, scrubber solids and evaporator
          solids to the disposal area, the initial dikes for the solids
          disposal canyon, the road from the ash handling area to the
          canyon, and fencing for the road and the solids disposal area.

                    10.  Electrical Equipment.  This equipment consists of
          transformers, buses, bus ducts, breakers, switching equipment and
          associated equipment necessary for the operation of the
          facilities.


                                                          EXHIBIT 4f

          =================================================================
                                                                           
                                                                           




                                  INDENTURE OF TRUST



                                       BETWEEN



                               COCONINO COUNTY, ARIZONA
                            POLLUTION CONTROL CORPORATION



                                         AND



                    FIRST TRUST OF NEW YORK, NATIONAL ASSOCIATION




                                   ----------------




                              DATED AS OF APRIL 1, 1997



                                  -----------------




                                     AUTHORIZING

                           POLLUTION CONTROL REVENUE BONDS,
                                    1997 SERIES B
                    (TUCSON ELECTRIC POWER COMPANY NAVAJO PROJECT)


          =================================================================

   <PAGE> 


                                  TABLE OF CONTENTS

                                                                       Page
                                                                       ----

          Parties . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
          Recitals  . . . . . . . . . . . . . . . . . . . . . . . . . .   1
          Granting Clause . . . . . . . . . . . . . . . . . . . . . . .   2

                                      ARTICLE I

                                     DEFINITIONS

          Section 1.01.  Definitions. . . . . . . . . . . . . . . . . .   2

                                      ARTICLE II

                                      THE BONDS

          Section 2.01.  Creation of Bonds. . . . . . . . . . . . . . .   8
          Section 2.02.  Form of Bonds. . . . . . . . . . . . . . . . .   9
          Section 2.03.  Execution of Bonds.  . . . . . . . . . . . . .   9
          Section 2.04.  Authentication of Bonds. . . . . . . . . . . .  10
          Section 2.05.  Bonds Not General Obligations. . . . . . . . .  10
          Section 2.06.  Prerequisites to Authentication of Bonds.  . .  10
          Section 2.07.  Lost or Destroyed Bonds or Bonds Canceled in
                          Error . . . . . . . . . . . . . . . . . . . .  11
          Section 2.08.  Transfer, Registration and Exchange of Bonds .  11
          Section 2.09.  Other Obligations  . . . . . . . . . . . . . .  13
          Section 2.10   Temporary Bonds  . . . . . . . . . . . . . . .  13
          Section 2.11.  Cancellation of Bonds  . . . . . . . . . . . .  13
          Section 2.12.  Payment of Principal and Interest  . . . . . .  13
          Section 2.13.  Applicability of Book-Entry Provisions . . . .  14

                                     ARTICLE III

                                 REDEMPTION OF BONDS

          Section 3.01.  Redemption Provisions  . . . . . . . . . . . .  14
          Section 3.02.  Selection of Bonds to be Redeemed  . . . . . .  15
          Section 3.03.  Procedure for Redemption . . . . . . . . . . .  16
          Section 3.04.  Payment of Redemption Price  . . . . . . . . .  16
          Section 3.05.  No Partial Redemption After Default  . . . . .  16

          *    This table of  contents is not a part  of the Indenture, and
               is  for convenience  only.   The captions  herein are  of no
               legal effect and do  not vary the meaning or legal effect of
               any part of the Indenture.


                                      ARTICLE IV

                                    THE BOND FUND


          Section 4.01.  Creation of Bond Fund  . . . . . . . . . . . .  17
          Section 4.02.  Liens  . . . . . . . . . . . . . . . . . . . .  17
          Section 4.03.  Deposits into Bond Fund  . . . . . . . . . . .  17
          Section 4.04.  Use of Moneys in Bond Fund . . . . . . . . . .  17
          Section 4.05.  Custody of Bond Fund; Withdrawal of Moneys . .  17
          Section 4.06.  Bonds Not Presented for Payment  . . . . . . .  18
          Section 4.07.  Moneys Held in Trust . . . . . . . . . . . . .  18

                                      ARTICLE V

                               DISPOSITION OF PROCEEDS

          Section 5.01.  Disposition of Proceeds. . . . . . . . . . . .  18

                                      ARTICLE VI

                                     INVESTMENTS

          Section 6.01.  Investments  . . . . . . . . . . . . . . . . .  19

                                     ARTICLE VII

                                  GENERAL COVENANTS

          Section 7.01.  No General Obligations . . . . . . . . . . . .  19
          Section 7.02.  Performance of Covenants of the Pollution Control
                          Corporation; Representations  . . . . . . . .  19
          Section 7.03.  Maintenance of Rights and Powers; Compliance with
                          Laws  . . . . . . . . . . . . . . . . . . . .  20
          Section 7.04.  Enforcement   of   Obligations  of   the  Company;
                           Amendments . . . . . . . . . . . . . . . . .  20
          Section 7.05.  Further Instruments. . . . . . . . . . . . . .  20
          Section 7.06.  No Disposition of Trust Estate.  . . . . . . .  20
          Section 7.07.  Financing Statements.    . . . . . . . . . . .  20
          Section 7.08.  Tax Covenants; Rebate Fund.  . . . . . . . . .  20
          Section 7.09.  Notices of Trustee.  . . . . . . . . . . . . .  21

                                     ARTICLE VIII

                                      DEFEASANCE

          Section 8.01.  Defeasance.  . . . . . . . . . . . . . . . . .  21

                                      ARTICLE IX

                                DEFAULTS AND REMEDIES

          Section 9.01.  Events of Default. . . . . . . . . . . . . . .  23
          Section 9.02.  Remedies.  . . . . . . . . . . . . . . . . . .  24
          Section 9.03.  Restoration to Former Position.  . . . . . . .  24
          Section 9.04.  Owners' Right to Direct Proceedings. . . . . .  24
          Section 9.05.  Limitation on Owners' Right to Institute
                          Proceedings.  . . . . . . . . . . . . . . . .  25
          Section 9.06.  No Impairment of Right to Enforce Payment. . .  25
          Section 9.07.  Proceedings by Trustee without Possession of
                          Bonds.  . . . . . . . . . . . . . . . . . . .  25
          Section 9.08.  No Remedy Exclusive. . . . . . . . . . . . . .  25
          Section 9.09.  No Waiver of Remedies. . . . . . . . . . . . .  25
          Section 9.10.  Application of Moneys. . . . . . . . . . . . .  26
          Section 9.11.  Severability of Remedies.  . . . . . . . . . .  26

                                      ARTICLE X

                TRUSTEE; PAYING AGENT AND CO-PAYING AGENTS; REGISTRAR

          Section 10.01. Acceptance of Trusts.  . . . . . . . . . . . .  27
          Section 10.02. No Responsibility for Recitals.  . . . . . . .  27
          Section 10.03. Limitations on Liability.  . . . . . . . . . .  27
          Section 10.04. Compensation, Expenses and Advances. . . . . .  27
          Section 10.05. Notice of Events of Default. . . . . . . . . .  28
          Section 10.06. Action by Trustee. . . . . . . . . . . . . . .  28
          Section 10.07. Good Faith Reliance. . . . . . . . . . . . . .  28
          Section 10.08. Dealings in Bonds and with the Pollution Control
                          Corporation and the Company.  . . . . . . . .  29
          Section 10.09. Allowance of Interest. . . . . . . . . . . . .  29
          Section 10.10. Construction of Indenture. . . . . . . . . . .  29
          Section 10.11. Resignation of Trustee.  . . . . . . . . . . .  29
          Section 10.12. Removal of Trustee.  . . . . . . . . . . . . .  29
          Section 10.13. Appointment of Successor Trustee.  . . . . . .  30
          Section 10.14. Qualifications of Successor Trustee. . . . . .  30
          Section 10.15. Judicial Appointment of Successor Trustee. . .  30
          Section 10.16. Acceptance of Trusts by Successor Trustee. . .  30
          Section 10.17. Successor by Merger or Consolidation.  . . . .  31
          Section 10.18. Standard of Care.  . . . . . . . . . . . . . .  31
          Section 10.19. Notice to Owners of Bonds of Event of Default.  31
          Section 10.20. Intervention  in  Litigation   of  the   Pollution
          Control
                          Corporation.  . . . . . . . . . . . . . . . .  31
          Section 10.21. Paying Agent; Co-Paying Agents.  . . . . . . .  31
          Section 10.22. Qualifications of Paying Agent and Co-Paying 
                           Agents; Resignation; Removal.  . . . . . . .  32
          Section 10.23. Registrar. . . . . . . . . . . . . . . . . . .  33
          Section 10.24. Qualifications of Registrar; Resignation;
                          Removal.  . . . . . . . . . . . . . . . . . .  33
          Section 10.25. Several Capacities.  . . . . . . . . . . . . .  33

                                      ARTICLE XI

                   EXECUTION OF INSTRUMENTS BY OWNERS OF BONDS AND
                             PROOF OF OWNERSHIP OF BONDS

          Section 11.01. Execution of Instruments; Proof of Ownership.   34

                                     ARTICLE XII

                MODIFICATION OF THIS INDENTURE AND THE LOAN AGREEMENT

          Section 12.01. Limitations. . . . . . . . . . . . . . . . . .  34
          Section 12.02. Supplemental Indentures without Owner Consent.  34
          Section 12.03. Supplemental Indentures with Consent of Owners.  
                                                                         35
          Section 12.04. Effect of Supplemental Indenture.  . . . . . .  36
          Section 12.05. Consent of the Company.  . . . . . . . . . . .  36
          Section 12.06. Amendment of Loan Agreement without Consent of
                          Owners. . . . . . . . . . . . . . . . . . . .  37
          Section 12.07. Amendment of Loan Agreement with Consent of
                          Owners. . . . . . . . . . . . . . . . . . . .  37

                                     ARTICLE XIII

                                    MISCELLANEOUS

          Section 13.01. Successors of the Pollution Control Corporation. 
                                                                         37
          Section 13.02. Parties in Interest. . . . . . . . . . . . . .  38
          Section 13.03. Severability.  . . . . . . . . . . . . . . . .  38
          Section 13.04. No Personal Liability of Pollution Control
                          Corporation Officials.  . . . . . . . . . . .  38
          Section 13.05. Bonds Owned by the Pollution Control Corporation 
                          or the Company. . . . . . . . . . . . . . . .  38
          Section 13.06. Counterparts.  . . . . . . . . . . . . . . . .  38
          Section 13.07. Governing Law. . . . . . . . . . . . . . . . .  39
          Section 13.08. Notices. . . . . . . . . . . . . . . . . . . .  39
          Section 13.09. Holidays.  . . . . . . . . . . . . . . . . . .  39
          Section 13.10. Statutory Notice Regarding Cancellation of
                          Contracts.    . . . . . . . . . . . . . . . .  39


          Testimonium . . . . . . . . . . . . . . . . . . . . . . . .    40
          Signatures and Seals  . . . . . . . . . . . . . . . . . . .    40

          Exhibit A - Form of Bond  . . . . . . . . . . . . . . . . . . A-1
          Exhibit B - Form of Endorsement of Transfer . . . . . . . . . B-1
          Exhibit C - Form of Certificate of Authentication . . . . . . C-1


   <PAGE> 



                                  INDENTURE OF TRUST

               THIS INDENTURE OF  TRUST, dated  as of April  1, 1997  (this
          "Indenture"), between COCONINO  COUNTY, ARIZONA POLLUTION CONTROL
          CORPORATION, an  Arizona  nonprofit corporation  and a  political
          subdivision  of  the State  of  Arizona  (hereinafter called  the
          "Pollution Control  Corporation"), and  First Trust of  New York,
          National   Association,  as   trustee  (hereinafter   called  the
          "Trustee"),

                                W I T N E S S E T H :


               WHEREAS, the Pollution Control Corporation is authorized and
          empowered under Title 35, Chapter 6, Arizona Revised Statutes, as
          amended  (the "Act"), to issue  its bonds in  accordance with the
          Act and to  make secured or  unsecured loans  for the purpose  of
          financing   or   refinancing   the   acquisition,   construction,
          improvement   or  equipping   of  pollution   control  facilities
          consisting  of real  and personal  properties, including  but not
          limited  to  machinery  and  equipment  whether  or  not  now  in
          existence  or under construction, which  are used in  whole or in
          part to control,  prevent, abate, alter, dispose or  store, solid
          waste,   thermal,   noise,  atmospheric   or   water  pollutants,
          contaminants or products therefrom, whether such facilities serve
          one  or more purposes  or functions  in addition  to controlling,
          preventing,   abating,  altering,   disposing  or   storing  such
          pollutants, contaminants or the products therefrom, and to charge
          and collect interest  on such  loans and pledge  the proceeds  of
          loan agreements as security  for the payment of the  principal of
          and interest on bonds,  or designated issues of bonds,  issued by
          the  Pollution Control  Corporation  and any  agreements made  in
          connection  therewith, whenever  the  Board of  Directors of  the
          Pollution  Control   Corporation  finds  such  loans   to  be  in
          furtherance of the purposes of the Pollution Control Corporation;

               WHEREAS,  the Pollution  Control Corporation  has heretofore
          issued  and sold  $25,000,000 aggregate  principal amount  of its
          Pollution  Control  Revenue Bonds,  1974 Series  A (Tucson  Gas &
          Electric  Company Project)  (the "1974  Bonds") due  December 17,
          1975,  the proceeds of which were loaned to Tucson Electric Power
          Company, an Arizona  corporation formerly known  as Tucson Gas  &
          Electric Company (the "Company");

               WHEREAS,   the  Pollution   Control  Corporation   has  also
          heretofore issued and sold $15,700,000 aggregate principal amount
          of its Pollution Control Revenue Bonds, 1975 Series A (Tucson Gas
          & Electric Company Project)  (the "1975 Bonds"), the  proceeds of
          which  were  loaned  to the  Company  to  pay  a  portion of  the
          principal amount of the 1974 Bonds; and

               WHEREAS,   the  Pollution   Control  Corporation   has  also
          heretofore issued and sold $14,700,000 aggregate principal amount
          of its  Pollution Control Refunding Revenue Bonds,  1996 Series B
          (Tucson  Electric Power  Company  Project), all  of which  remain
          outstanding (the "1996 Bonds"), the proceeds of which were loaned
          to the Company  to pay  the outstanding principal  amount of  the
          1975 Bonds; and

               WHEREAS, the Pollution Control Corporation proposes to issue
          and  sell its  revenue  bonds to  refinance,  by the  payment  or
          redemption of the 1996 Bonds,  or provisions therefor, a  portion
          of the  costs of  the acquisition, construction,  improvement and
          equipping  of  the  pollution  control  facilities  described  in
          Exhibit A to the Loan  Agreement, dated as of April 1,  1997 (the
          "Loan Agreement"), between the Pollution Control  Corporation and
          the Company, paid from the proceeds of the 1975 Bonds;

               NOW, THEREFORE,  for and in consideration  of these premises
          and the mutual  covenants herein contained, of  the acceptance by
          the Trustee of  the trusts  hereby created, of  the purchase  and
          acceptance of the  Bonds by the  Owners (as hereinafter  defined)
          thereof and of  the sum of one dollar lawful  money of the United
          States of  America, to it duly  paid by the Trustee  at or before
          the  execution and delivery of these presents, and for other good
          and valuable  consideration the receipt and  sufficiency of which
          are  hereby acknowledged, in order  to secure the  payment of the
          principal  of and premium, if  any, and interest  on the Bonds at
          any  time   Outstanding  (as  hereinafter  defined)   under  this
          Indenture according to their tenor and effect and the performance
          and observance by  the Pollution Control  Corporation of all  the
          covenants  and  conditions   expressed  or  implied   herein  and
          contained in  the Bonds,  the Pollution Control  Corporation does
          hereby grant, bargain, sell, convey, mortgage, pledge and assign,
          and   grant  a  security  interest  in,   the  Trust  Estate  (as
          hereinafter  defined) to the Trustee, its successors in trust and
          their assigns forever;

               TO HAVE  AND TO HOLD  all the same  with all privileges  and
          appurtenances hereby conveyed and assigned, or agreed or intended
          so  to be,  to the  Trustee, its  successors in  trust and  their
          assigns forever;

               IN TRUST NEVERTHELESS, upon the terms and trusts  herein set
          forth,  first,  for  the  equal  and  proportionate  benefit  and
          security  of all Owners of the Bonds  issued under and secured by
          this Indenture without preference,  priority or distinction as to
          the lien of any Bonds over any other Bonds;

               PROVIDED,  HOWEVER,  that if,  after  the  right, title  and
          interest of  the Trustee  in and to  the Trust Estate  shall have
          ceased,  terminated and  become void  in accordance  with Article
          VIII hereof, the principal  of and premium, if any,  and interest
          on the Bonds shall have been paid to the Owners thereof, or shall
          have  been paid to the  Company pursuant to  Section 4.06 hereof,
          then and  in that case these  presents and the  estate and rights
          hereby granted shall cease, terminate and be  void, and thereupon
          the Trustee shall cancel and discharge this Indenture and execute
          and deliver  to the Pollution Control Corporation and the Company
          such instruments in writing as shall be requisite to evidence the
          discharge hereof; otherwise this Indenture is to be and remain in
          full force and effect.

               THIS  INDENTURE  OF  TRUST  FURTHER WITNESSETH,  and  it  is
          expressly declared,  that all Bonds issued  and secured hereunder
          are to  be  issued, authenticated  and delivered,  and the  Trust
          Estate and the other estate  and rights hereby granted are  to be
          dealt with and disposed of, under, upon and subject to the terms,
          conditions, stipulations, covenants, agreements, trusts, uses and
          purposes as  hereinafter  expressed, and  the  Pollution  Control
          Corporation has agreed and covenanted, and does hereby  agree and
          covenant, with the  Trustee and with the respective  Owners, from
          time to time, of the Bonds, as follows:



                                      ARTICLE I

                                     DEFINITIONS

               Section 1.01.  Definitions.    The  terms  defined  in  this
          Article I shall,  for all  purposes of this  Indenture, have  the
          meanings  herein specified, unless  the context  clearly requires
          otherwise:

          Act:

               "Act"  shall  mean  Title 35,  Chapter 6,   Arizona  Revised
          Statutes,  and   all  acts  supplemental  thereto  or  amendatory
          thereof.

          Administration Expenses:

               "Administration Expenses" shall mean the reasonable expenses
          incurred by the Pollution Control Corporation with respect to the
          Loan  Agreement,  this Indenture  and  any  transaction or  event
          contemplated by  the Loan Agreement or  this Indenture, including
          the  compensation  and  reimbursement of  expenses  and  advances
          payable  to the Trustee, to the Paying Agent, any Co-Paying Agent
          and the Registrar.

          Authorized Company Representative:

               "Authorized Company Representative"  shall mean each  person
          at the time designated to act on behalf of the Company by written
          certificate furnished  to the Pollution  Control Corporation  and
          the Trustee containing the specimen signature  of such person and
          signed  on behalf  of  the Company  by  its President,  any  Vice
          President  or its Treasurer,  together with its  Secretary or any
          Assistant Secretary.

          Bond Counsel:

               "Bond Counsel"  shall mean any  firm or firms  of nationally
          recognized bond counsel experienced  in matters pertaining to the
          validity  of,  and exclusion  from gross  income for  federal tax
          purposes  of interest  on  bonds issued  by states  and political
          subdivisions,  selected  by the  Company  and  acceptable to  the
          Pollution Control Corporation.

          Bond Fund:

          "Bond Fund" shall mean the fund created by Section 4.01 hereof.

          Bonds:

               "Bond"  or "Bonds"  shall mean  the  bonds authorized  to be
          issued under this Indenture.

          Code:

               "Code" shall mean the  Internal Revenue Code of 1986  or any
          successor  statute thereto.  Each  reference to a  section of the
          Code herein shall be deemed to include the United States Treasury
          Regulations proposed  or in  effect thereunder and  applicable to
          the  Bonds or  the use  of proceeds  thereof, unless  the context
          clearly requires  otherwise.   References to any  particular Code
          section shall, in the event of a successor Code, be  deemed to be
          a reference to the successor to such Code section.

          Company:

               "Company"  shall  mean  Tucson  Electric  Power  Company,  a
          corporation organized and existing under the laws of the State of
          Arizona, its  successors  and their  assigns, including,  without
          limitation, any successor  obligor under Section 6.01 or  7.01 of
          the  Loan  Agreement to  the  extent of  the  obligations assumed
          thereunder.

          Depositary:

               "Depositary" shall mean The  Depository Trust Company or any
          successor thereto as a securities repository for the Bonds.

          Facilities:

               "Facilities" shall mean  the real  and personal  properties,
          machinery  and equipment  currently existing,  under construction
          and to be  constructed which are  described in Exhibit  A to  the
          Loan  Agreement,  as revised  from time  to  time to  reflect any
          changes  therein, additions  thereto, substitutions  therefor and
          deletions therefrom permitted by the terms of the Loan Agreement,
          subject, however, to the  provisions of Section 7.01 of  the Loan
          Agreement.

          Government Obligations:

               "Government Obligations" shall mean:

                    (a) direct obligations of, or obligations the principal
               of and interest on  which are unconditionally guaranteed by,
               the  United States of America entitled to the benefit of the
               full faith and credit thereof; and

                    (b)   certificates,   depositary   receipts  or   other
               instruments which  evidence a  direct ownership  interest in
               obligations described in clause (a) above or in any specific
               interest  or  principal  payments  due in  respect  thereof;
               provided, however, that the custodian of such obligations or
               specific interest or principal  payments shall be a  bank or
               trust company organized under the laws of the  United States
               of  America or of any  state or territory  thereof or of the
               District of Columbia, with  a combined capital stock surplus
               and undivided profits of at least $50,000,000; and provided,
               further,  that except as  may be otherwise  required by law,
               such custodian shall be  obligated to pay to the  holders of
               such certificates, depositary  receipts or other instruments
               the full  amount received  by such  custodian in  respect of
               such  obligations  or specific  payments  and  shall not  be
               permitted to make any deduction therefrom.

          Indenture:

               "Indenture" shall mean this Indenture of Trust,  dated as of
          April 1, 1997, between the Pollution Control Corporation and  the
          Trustee, and any  and all modifications,  alterations, amendments
          and supplements thereto.

          Investment Securities:

               "Investment  Securities" shall  mean  any of  the  following
          obligations or securities on which neither the Company nor any of
          its subsidiaries is the  obligor: (a) Government Obligations; (b)
          interest bearing  deposit accounts  (which may be  represented by
          certificates  of deposit)  in  national, state  or foreign  banks
          having  a  combined   capital  and  surplus  of   not  less  than
          $10,000,000; (c)  bankers' acceptances  drawn on and  accepted by
          commercial banks  having a combined  capital and  surplus of  not
          less  than  $10,000,000;  (d)  (i) direct  obligations  of,  (ii)
          obligations  the   principal  of   and  interest  on   which  are
          unconditionally guaranteed by,  and (iii)  any other  obligations
          the interest  on  which is  exempt from  federal income  taxation
          issued  by,  any  state of  the  United  States  of America,  the
          District of Columbia or  the Commonwealth of Puerto Rico,  or any
          political subdivision, agency, authority or other instrumentality
          of  any of  the foregoing,  which, in  any case,  are rated  by a
          nationally  recognized rating agency in any  of its three highest
          rating   categories;   (e)   obligations   of   any   agency   or
          instrumentality of  the United States of  America; (f) commercial
          or  finance  company  paper  which   is  rated  by  a  nationally
          recognized rating  agency  in any  of  its three  highest  rating
          categories; (g) corporate debt securities issued by  corporations
          having debt  securities rated  by a nationally  recognized rating
          agency  in  any  of  its three  highest  rating  categories;  (h)
          repurchase  agreements with  banking  or  financial  institutions
          having   a  combined  capital  and  surplus   of  not  less  than
          $10,000,000 with respect  to any of the foregoing  obligations or
          securities;  (i) shares  or  interests  in registered  investment
          companies whose assets consist of obligations or securities which
          are described in  any other clause of this  sentence; and (j) any
          other obligations which may lawfully be purchased by the Trustee.
          The commercial  banks and banking institutions  referred to above
          may  include  the  entities  acting  as  Trustee,  Paying  Agent,
          Co-Paying  Agent or  Registrar hereunder  if such  entities shall
          otherwise satisfy the requirements set forth above.

          Loan Agreement:

               "Loan Agreement" shall mean the Loan Agreement, dated as  of
          April 1,  1997, between the Pollution Control Corporation and the
          Company relating  to the  Bonds, and  any and  all modifications,
          alterations, amendments and supplements thereto.

          Loan Payments:

               "Loan Payments" shall mean the  payments required to be made
          by the Company pursuant to Section 5.01 of the Loan Agreement.

          1954 Code:

               "1954 Code" shall mean the Internal Revenue Code of 1954, as
          amended.

          1975 Bonds:

               "1975  Bonds" shall mean the $15,700,000 aggregate principal
          amount of the  Pollution Control Corporation's Pollution  Control
          Revenue  Bonds, 1975  Series  A (Tucson  Gas  & Electric  Company
          Project).

          1974 Bonds:

               "1974  Bonds" shall mean the $25,000,000 aggregate principal
          amount of the  Pollution Control Corporation's Pollution  Control
          Revenue Bonds,  1974  Series A  (Tucson  Gas &  Electric  Company
          Project).

          1996 Bonds:

               "1996  Bonds" shall mean the $14,700,000 aggregate principal
          amount of the  Pollution Control Corporation's Pollution  Control
          Refunding  Revenue Bonds,  1996 Series  B (Tucson  Electric Power
          Company Project).

          Notice by Mail:

               "Notice  by Mail" or "notice" of any action or condition "by
          Mail" shall mean  a written  notice meeting  the requirements  of
          this Indenture  mailed  by  first-class  mail to  the  Owners  of
          specified  registered  Bonds  at   the  addresses  shown  in  the
          registration books  maintained pursuant  to Section  2.08 hereof;
          provided, however, that if, because of the temporary or permanent
          suspension of  delivery  of first-class  mail  or for  any  other
          reason,  it is impossible or impracticable to give such notice by
          first-class  mail, then  such giving  of notice in  lieu thereof,
          which may include publication, as shall be made with the approval
          of  the  Trustee  (or, if  there  be  no  trustee hereunder,  the
          Pollution  Control  Corporation)  shall constitute  a  sufficient
          giving of such notice.

          Notice by Publication:

               "Notice  by  Publication"  or  "notice"  of  any  action  or
          condition  "by Publication"  shall mean  publication of  a notice
          meeting  the requirements  of this  Indenture in  a newspaper  or
          financial journal of general circulation in The City of New York,
          New York, which carries financial news, is printed in the English
          language  and  is customarily  published  on  each business  day;
          provided, however,  that  any successive  weekly  publication  of
          notice required hereunder may be made, unless otherwise expressly
          provided herein, on the same or different days of the week and in
          the  same  or different  newspapers  or  financial journals;  and
          provided, further, that if, because of the temporary or permanent
          suspension  of  the publication  or  general  circulation of  any
          newspaper or financial  journal or  for any other  reason, it  is
          impossible or impracticable to publish such notice in  the manner
          herein  described, then such publication in lieu thereof as shall
          be  made with  the approval of  the Trustee  (or, if  there be no
          trustee  hereunder,  the  Pollution  Control  Corporation)  shall
          constitute a sufficient publication of such notice.

          Outstanding:

               "Outstanding", when  used in  reference to the  Bonds, shall
          mean,  as  at any  particular date,  the  aggregate of  all Bonds
          authenticated and delivered under this Indenture except:

                    (a) those canceled by  the Trustee at or prior  to such
               date or delivered to or acquired by the  Trustee at or prior
               to such date for cancellation;

                    (b) those deemed to be  paid in accordance with Article
               VIII hereof; and

                    (c) those in lieu of or in exchange or substitution for
               which  other  Bonds  shall   have  been  authenticated   and
               delivered   pursuant  to   this   Indenture,  unless   proof
               satisfactory  to the  Trustee and  the Company  is presented
               that  such Bonds  are  held by  a bona  fide  holder in  due
               course.

          Owner:

               "Owner"  shall mean  the person  in whose  name any  Bond is
          registered  upon the  registration books  maintained pursuant  to
          Section 2.08 hereof.  The Company may be an Owner.

          Paying Agent; Co-Paying Agent; Principal Office thereof:

               "Paying Agent"  and "Co-Paying Agent" shall  mean the paying
          agent  and  any  co-paying  agent appointed  in  accordance  with
          Section  10.21 hereof.  "Principal Office" of the Paying Agent or
          any Co-Paying Agent  shall mean the office thereof  designated in
          writing to the Trustee.

          Plant:

               "Plant"  shall  mean  the   Navajo  Generating  Station,  an
          electric power  generating plant near Page,  Arizona, in Coconino
          County,  Arizona, and  any additions  or improvements  thereto or
          replacements thereof.

          Pollution Control Corporation:

               "Pollution Control Corporation"  shall mean Coconino County,
          Arizona  Pollution  Control  Corporation,  an  Arizona  nonprofit
          corporation and  a political subdivision of the  State of Arizona
          incorporated for and with the approval of the County of Coconino,
          Arizona, pursuant  to the provisions  of the Constitution  of the
          State of Arizona and the Act, its successors and their assigns.

          Rebate Fund:

               "Rebate Fund"  shall mean the  fund created by  Section 7.08
          hereof.

          Receipts and  Revenues of the Pollution  Control Corporation from
          the Loan Agreement:

               "Receipts and Revenues of the Pollution Control  Corporation
          from the Loan Agreement" shall mean all moneys paid or payable to
          the Trustee for  the account of the Pollution Control Corporation
          by  the  Company in  respect of  the  Loan Payments  and payments
          pursuant to Section 9.01  of the Loan Agreement and  all receipts
          of  the Trustee  which, under the  provisions of  this Indenture,
          reduce the amount of such payments.

          Record Date:

               "Record  Date"  shall mean  the  close  of  business on  the
          fifteenth (15th) day of  the calendar month immediately preceding
          each regularly scheduled interest payment date.

          Registrar; Principal Office thereof:

               "Registrar" shall mean the registrar appointed in accordance
          with Section 10.23 hereof.   "Principal Office" of  the Registrar
          shall mean  the  office  thereof  designated in  writing  to  the
          Trustee.

          Supplemental Indenture:

               "Supplemental Indenture"  shall mean  any  indenture of  the
          Pollution  Control  Corporation  modifying,  altering,  amending,
          supplementing or  confirming this  Indenture for any  purpose, in
          accordance with the terms thereof and hereof.

          Supplemental Loan Agreement:

               "Supplemental  Loan  Agreement"  shall  mean  any  agreement
          between  the  Pollution  Control  Corporation   and  the  Company
          modifying,   altering,   amending  or   supplementing   the  Loan
          Agreement, in accordance with the terms thereof and hereof.

          Tax Agreement:

               "Tax  Agreement"  shall  mean   that  tax  certificate   and
          agreement,  dated  the date  of  the  initial authentication  and
          delivery of the Bonds,  between the Pollution Control Corporation
          and the Company, relating to the requirements of the Code and the
          1954 Code, and any and all modifications, alterations, amendments
          and supplements thereto.

          Trust Estate:

               "Trust  Estate" shall mean at any particular time all right,
          title and interest of the Pollution Control Corporation in and to
          the Loan Agreement (except its  rights under Sections 5.03, 5.04,
          6.03 and 8.05  thereof and  any rights of  the Pollution  Control
          Corporation   to   receive   notices,   certificates,   requests,
          requisitions  and  other  communications  thereunder),  including
          without limitation,  the Receipts  and Revenues of  the Pollution
          Control Corporation from  the Loan Agreement,  the Bond Fund  and
          all moneys and Investment Securities from time to time on deposit
          therein (excluding, however, any  moneys or Investment Securities
          held   in  the  Rebate  Fund),  any  and  all  other  moneys  and
          obligations (other than  Bonds) which at such  time are deposited
          or are required to be deposited with, or are held or are required
          to be held by or on  behalf of, the Trustee, the Paying  Agent or
          any  Co-Paying Agent in trust under any of the provisions of this
          Indenture and  all other  rights, titles  and interests  which at
          such  time are subject to  the lien of  this Indenture; provided,
          however, that in  no event shall there  be included in the  Trust
          Estate  (a) moneys or obligations  deposited with or  held by the
          Trustee in the Rebate Fund pursuant to Section 7.08 hereof or (b)
          moneys or obligations deposited  with or paid to the  Trustee for
          the redemption or payment  of Bonds which are deemed to have been
          paid  in accordance  with  Article  VIII  hereof or  moneys  held
          pursuant to Section 4.06 hereof.

          Trustee; Principal Office thereof:

               "Trustee"  shall  mean First  Trust  of  New York,  National
          Association, as  trustee under this Indenture,  its successors in
          trust and their assigns.  "Principal Office" of the Trustee shall
          mean the principal corporate trust  office of the Trustee,  which
          office at the date of acceptance by the Trustee of the duties and
          obligations imposed on the  Trustee by this Indenture is  located
          at the address specified in Section 13.08 hereof.

                                      ARTICLE II

                                      THE BONDS

               Section 2.01.  Creation   of   Bonds.     There   is  hereby
          authorized and created under  this Indenture, for the purpose  of
          providing moneys to pay, or redeem, or provide for the redemption
          therefor, of the  1996 Bonds, an issue of Bonds,  entitled to the
          benefit,  protection  and  security  of this  Indenture,  in  the
          aggregate  principal  amount  of Fourteen  Million  Seven Hundred
          Thousand  Dollars  ($14,700,000).   Each  of the  Bonds  shall be
          designated  by  the  title "Coconino  County,  Arizona  Pollution
          Control Corporation Pollution Control Revenue Bond, 1997 Series B
          (Tucson Electric Power Company Navajo Project)".  The Bonds shall
          mature, subject to prior redemption upon the terms and conditions
          hereinafter set forth, on October 1, 2032 and shall bear interest
          from  the  date  thereof  until  payment   of  the  principal  or
          redemption  price thereof shall have been made or provided for in
          accordance with the provisions  hereof, whether at maturity, upon
          redemption or otherwise, at the rate of seven per centum (7%) per
          annum,  with  interest  thereon  payable  semi-annually  on  each
          October  1 and  April 1,  commencing October  1, 1997.   Interest
          shall be calculated  on the basis of a 360-day year consisting of
          twelve 30-day months.

               Section 2.02.  Form of Bonds.   Bonds shall be authenticated
          and delivered hereunder solely  as fully registered bonds without
          coupons  in  the denomination  of  $5,000  or integral  multiples
          thereof.  Bonds shall  be numbered as determined by  the Trustee.
          Bonds  authenticated prior  to  the first  interest payment  date
          shall  be dated  April  1,  1997.    Bonds  authenticated  on  or
          subsequent to the  first interest payment  date thereon shall  be
          dated  the  interest  payment date  next  preceding  the  date of
          authentication thereof, unless such date of authentication  shall
          be an  interest payment date to  which interest on the  Bonds has
          been paid in full or duly  provided for, in which case they shall
          be dated such date of authentication; provided, however, that if,
          as  shown by the  records of the  Trustee, interest on  the Bonds
          shall  be  in  default,  Bonds   issued  in  exchange  for  Bonds
          surrendered for transfer or  exchange shall be dated the  date to
          which interest has been paid in full on the Bonds surrendered.

               Principal  of and premium, if any, on Bonds shall be payable
          to  the Owners of such  Bonds upon presentation  and surrender of
          such Bonds  at the  Principal Office of  the Paying Agent  or any
          Co-Paying Agent.   Interest on the  Bonds shall be paid  by check
          drawn upon the  Paying Agent  and mailed  to the  Owners of  such
          Bonds as of the close of business on the Record Date with respect
          to each interest payment date at the registered addresses of such
          Owners  as they shall appear as of  the close of business on such
          Record  Date on  the  registration books  maintained pursuant  to
          Section 2.08 hereof notwithstanding  the cancellation of any such
          Bond upon any exchange or registration  of transfer subsequent to
          such Record Date,  except that if  and to the  extent that  there
          should be  a default on the payment of interest on any Bond, such
          defaulted interest shall be paid to the Owners in whose name such
          Bond   (or  any  Bond  or  Bonds  issued  upon  any  exchange  or
          registration of transfer thereof) is  registered as of the  close
          of business on a date selected by the Trustee in its  discretion,
          but not more  than 15 days or less than 10 days prior to the date
          of  payment  of  such  defaulted  interest;  notwithstanding  the
          foregoing, upon  request to the Paying  Agent by an Owner  of not
          less  than $1,000,000  in  aggregate principal  amount of  Bonds,
          interest on such  Bonds and, after presentation and  surrender of
          such  Bonds, the principal thereof shall be paid to such Owner by
          wire transfer  to the  account maintained within  the continental
          United States specified by such Owner or, if such Owner maintains
          an account with  the entity  acting as Paying  Agent, by  deposit
          into such  account.  Payment  as aforesaid shall be  made in such
          coin  or currency  of the  United  States of  America as,  at the
          respective  times  of  payment, shall  be  legal  tender for  the
          payment of public and private debts.

               The  Bonds and the form for registration of transfer and the
          form  of certificate of authentication to be printed on the Bonds
          are  to  be  in substantially  the  forms  thereof  set forth  in
          Exhibits  A,  B and  C  hereto, respectively,  with  necessary or
          appropriate variations,  omissions and insertions as permitted or
          required by this Indenture.

               Section 2.03.  Execution  of  Bonds.    The  Bonds  shall be
          executed  on behalf of  the Pollution Control  Corporation by the
          President  or   a  Vice   President  of  the   Pollution  Control
          Corporation  and  shall  have  affixed, impressed  or  reproduced
          thereon the  official seal  of the Pollution  Control Corporation
          which  shall  be  attested  by  the  Secretary  or  an  Assistant
          Secretary of  the Pollution  Control Corporation.    Each of  the
          foregoing officers may  execute or  cause to be  executed with  a
          facsimile signature in  lieu of his  manual signature the  Bonds,
          provided  the  signature  of  either  the  President  or  a  Vice
          President of  the Pollution Control Corporation  or the Secretary
          or  Assistant Secretary  of  the  Pollution  Control  Corporation
          shall, if required by applicable laws, be manually subscribed.

               In  case any  officer of  the Pollution  Control Corporation
          whose signature or a facsimile of whose signature shall appear on
          the   Bonds  shall   cease  to   be  such   officer  before   the
          authentication by the  Trustee and delivery  of such Bonds,  such
          signature  or  such facsimile  shall  nevertheless  be valid  and
          sufficient  for all  purposes, the  same as  if such  officer had
          remained in office until delivery; and any  Bond may be signed on
          behalf of the  Pollution Control Corporation by  such persons as,
          at the  time  of execution  of  such Bond,  shall  be the  proper
          officers of the Pollution Control Corporation, even though at the
          date  of  such Bond  or of  the  execution and  delivery  of this
          Indenture any such person was not such officer.

               Section 2.04.  Authentication of Bonds.   Only such Bonds as
          shall  have  endorsed  thereon  a  certificate  of authentication
          substantially  in the  form set  forth in  Exhibit C  hereto duly
          executed by the Trustee shall be entitled to any right or benefit
          under this Indenture.   No Bond shall be valid or  obligatory for
          any purpose  unless and until such  certificate of authentication
          shall have been duly  executed by the Trustee, and  such executed
          certificate of authentication of the  Trustee upon any such Bonds
          shall   be  conclusive   evidence   that  such   Bond  has   been
          authenticated and delivered under  this Indenture.  The Trustee's
          certificate of authentication on any Bond shall be deemed to have
          been executed by it if signed with an authorized signature of the
          Trustee, but it  shall not be necessary that the same person sign
          the certificate  of  authentication on  all of  the Bonds  issued
          hereunder.   This  Section 2.04 is subject  to the  provisions of
          Section 10.17 hereof.

               Section 2.05.  Bonds Not General  Obligations.  Neither  the
          County of Coconino, Arizona nor the State of Arizona shall in any
          event be liable  for the payment of the principal  of or premium,
          if  any, or interest on the Bonds,  and neither the Bonds nor the
          premium, if any, or  the interest thereon, shall be  construed to
          constitute an indebtedness of County of Coconino,  Arizona or the
          State of  Arizona within  the  meaning of  any constitutional  or
          statutory provisions whatsoever.   The Bonds and the premium,  if
          any, and the interest thereon shall be limited obligations of the
          Pollution Control  Corporation payable  solely from  the Receipts
          and  Revenues of the Pollution Control  Corporation from the Loan
          Agreement  and  the  other  moneys pledged  therefor  under  this
          Indenture,  and such fact shall be plainly  stated on the face of
          each Bond.  

               Section 2.06.  Prerequisites  to  Authentication  of  Bonds.
          The Pollution  Control Corporation  shall execute and  deliver to
          the  Trustee and  the Trustee  shall authenticate  the Bonds  and
          deliver  said Bonds to the  initial purchasers thereof  as may be
          directed hereinafter in this Section 2.06.

               Prior to the delivery on original issuance by the Trustee of
          any  authenticated Bonds there shall be or have been delivered to
          the Trustee:

                    (a)  a duly certified copy of a resolution of the Board
               of   Directors   of   the   Pollution   Control  Corporation
               authorizing the execution and delivery of this Indenture and
               the Loan Agreement and the issuance of the Bonds;

                    (b)  an original  duly executed  counterpart or  a duly
               certified copy of the Loan Agreement;

                    (c)  a  request and  authorization  to  the Trustee  on
               behalf of  the Pollution Control Corporation,  signed by its
               President or  a Vice President, to  authenticate and deliver
               the Bonds  in the  aggregate principal amount  determined by
               this  Indenture  to  the  purchaser  or  purchasers  therein
               identified  upon payment to the Trustee, but for the account
               of the Pollution  Control Corporation, of a sum specified in
               such request and authorization  plus any accrued interest on
               such Bonds to the date of delivery; and

                    (d)  a  written statement  on  behalf  of the  Company,
               executed  by  the  President,  any  Vice  President  or  the
               Treasurer, (i)  approving the  issuance and delivery  of the
               Bonds and (ii)  consenting to  each and  every provision  of
               this Indenture.

               Section 2.07.  Lost or Destroyed Bonds or Bonds  Canceled in
          Error.  If  any Bond, whether in temporary or definitive form, is
          lost  (whether  by  reason  of  theft  or  otherwise),  destroyed
          (whether  by  mutilation,  damage,  in  whole  or  in  part,   or
          otherwise)  or   canceled  in   error,   the  Pollution   Control
          Corporation may  execute and the  Trustee may authenticate  a new
          Bond  of  like date  and denomination  and  bearing a  number not
          contemporaneously outstanding;  provided that (a) in  the case of
          any  mutilated   Bond,  such   mutilated  Bond  shall   first  be
          surrendered  to the Trustee and (b) in  the case of any lost Bond
          or Bond destroyed in whole, there shall be first furnished to the
          Pollution  Control  Corporation,  the  Trustee  and  the  Company
          evidence  of  such  loss or  destruction.    In  every case,  the
          applicant  for  a substitute  Bond  shall  furnish the  Pollution
          Control Corporation, the Trustee and the Company such security or
          indemnity  as may be required  by any of them.   In the event any
          lost  or destroyed Bond  or a Bond  canceled in error  shall have
          matured or is about to mature, or has been called for redemption,
          instead  of issuing  a substitute  Bond the  Trustee may,  in its
          discretion, pay the same without surrender thereof if there shall
          be  first furnished  to  the Pollution  Control Corporation,  the
          Trustee  and the  Company evidence of  such loss,  destruction or
          cancellation,  together  with  indemnity, satisfactory  to  them.
          Upon the issuance  of any substitute Bond,  the Pollution Control
          Corporation  and the  Trustee may  require the  payment of  a sum
          sufficient to cover any tax or other governmental charge that may
          be imposed in relation thereto.  The Trustee may charge the Owner
          of  any such Bond with the Trustee's reasonable fees and expenses
          in  connection with  any  transaction described  in this  Section
          2.07.

               Every substitute  Bond issued pursuant to  the provisions of
          this Section  2.07 by virtue of  the fact that any  Bond is lost,
          destroyed  or canceled  in error  shall constitute  an additional
          contractual  obligation  of  the Pollution  Control  Corporation,
          whether or not  the Bond so lost, destroyed or  canceled shall be
          at  any  time  enforceable, and  shall  be  entitled  to all  the
          benefits of  this Indenture equally and  proportionately with any
          and all other Bonds  duly issued hereunder.   All Bonds shall  be
          held and owned  upon the  express condition that,  to the  extent
          permitted  by law,  the foregoing  provisions are  exclusive with
          respect  to the  replacement  or payment  of  lost, destroyed  or
          improperly canceled Bonds, notwithstanding any law or statute now
          existing or hereafter enacted.

               Section 2.08.  Transfer, Registration and Exchange of Bonds.
          The Registrar shall  maintain and keep, at  its Principal Office,
          books for the registration and registration of transfer of Bonds,
          which, at all reasonable  times, shall be open for  inspection by
          the Pollution  Control Corporation, the Trustee  and the Company;
          and, upon presentation for  such purpose of any Bond  entitled to
          registration or registration of  transfer at the Principal Office
          of the  Registrar, the Registrar  shall register or  register the
          transfer  in such books, under such reasonable regulations as the
          Registrar may prescribe.   The Registrar shall make all necessary
          provisions to permit the exchange  or registration of transfer of
          Bonds at its Principal Office.

               The  transfer  of  any Bond  shall  be  registered  upon the
          registration books of the Registrar at the written request of the
          Owner thereof or  his attorney duly  authorized in writing,  upon
          surrender  thereof  at the  Principal  Office  of the  Registrar,
          together with  a written  instrument of transfer  satisfactory to
          the Registrar duly executed  by the Owner or his  duly authorized
          attorney.  Upon the registration of transfer of any such  Bond or
          Bonds, the Pollution Control Corporation shall issue  in the name
          of  the transferee,  in authorized denominations,  a new  Bond or
          Bonds in the same  aggregate principal amount as the  surrendered
          Bond or Bonds.

               The Pollution  Control Corporation, the  Trustee, the Paying
          Agent, any Co-Paying Agent  and the Registrar may deem  and treat
          the Owner of any Bond as the absolute owner of such Bond, whether
          such Bond shall  be overdue or not, for the  purpose of receiving
          payment  of, or on  account of, the principal  of and premium, if
          any, and, except as provided in Section 2.02 hereof, interest on,
          such Bond and for  all other purposes, and neither  the Pollution
          Control Corporation, the Trustee, the Paying Agent, any Co-Paying
          Agent nor  the Registrar shall be  affected by any notice  to the
          contrary.   All such payments so  made to any such  Owner or upon
          his order shall be  valid and effective to satisfy  and discharge
          the liability upon such Bond to the extent of the sum or sums  so
          paid.

               Bonds, upon surrender thereof at the Principal Office of the
          Registrar may, at the  option of the Owner thereof,  be exchanged
          for  an  equal  aggregate  principal   amount  of  Bonds  of  any
          authorized denomination.

               In all cases in  which the privilege of exchanging  Bonds or
          registering  the transfer  of Bonds  is exercised,  the Pollution
          Control  Corporation   shall  execute  and   the  Trustee   shall
          authenticate and deliver Bonds  in accordance with the provisions
          of  this Indenture.  For  every such exchange  or registration of
          transfer of Bonds, whether temporary or definitive, the Pollution
          Control Corporation,  the Registrar,  or the  Trustee may  make a
          charge  sufficient  to  reimburse   it  for  any  tax   or  other
          governmental  charge required  to  be paid  with respect  to such
          exchange  or registration of transfer, which sum or sums shall be
          paid by the  person requesting such  exchange or registration  of
          transfer  as  a  condition  precedent  to  the  exercise  of  the
          privilege of  making such  exchange or registration  of transfer.
          The  Registrar  shall  not be  obligated  (a)  to  make any  such
          exchange or  registration of transfer of Bonds during the fifteen
          (15) days next preceding the date on which notice of any proposed
          redemption  of  Bonds  is given,  (b)  to  make  any exchange  or
          registration of transfer of any Bonds called for redemption.

               The Bonds are to be initially registered in the name of Cede
          & Co.,  as nominee for the  Depositary.  Such Bonds  shall not be
          transferable or exchangeable, nor shall any purported transfer be
          registered, except as follows:

                    (a)  such  Bonds  may  be  transferred  in  whole,  and
               appropriate  registration  of  transfer  effected,  if  such
               transfer is by  such nominee  to the Depositary,  or by  the
               Depositary  to another nominee thereof, or by any nominee of
               the  Depositary  to any  other  nominee thereof,  or  by the
               Depositary  or   any  nominee   thereof  to   any  successor
               securities depositary or any nominee thereof; and

                    (b)  such Bond  may be  exchanged for  definitive Bonds
               registered in the respective names of the beneficial holders
               thereof,   and  thereafter  shall  be  transferable  without
               restriction, if:

                    (i)  the Depositary shall have notified the Company and
               the  Trustee that it is  unwilling or unable  to continue to
               act as securities depositary with respect to  such Bonds and
               the Trustee  shall not  have  been notified  by the  Company
               within  ninety (90)  days  of the  identity  of a  successor
               securities depositary with respect to such Bonds;

                    (ii)  the Company shall have delivered to the Trustee a
               written instrument to the effect that such Bonds shall be so
               exchangeable on and after a date specified therein; or

                    (iii)  (1) an Event of  Default shall have occurred and
               be continuing, (2)  the Trustee shall  have given notice  of
               such Event of Default  pursuant to Section 10.19 hereof  and
               (3) there shall have been delivered to the Pollution Control
               Corporation,  the  Company and  the  Trustee  an opinion  of
               counsel  to the effect that the  interests of the beneficial
               owners of such  Bonds in respect thereof will  be materially
               impaired  unless such  owners  become  owners of  definitive
               Bonds.

               The Bonds  delivered to the Depositary may  contain a legend
          reflecting the foregoing restrictions on registration of transfer
          and exchange.

               Section 2.09.  Other  Obligations.    The Pollution  Control
          Corporation  expressly reserves the right to issue, to the extent
          permitted   by  law,  but  shall   not  be  obligated  to  issue,
          obligations  under  another indenture  or  indentures to  provide
          additional  funds  to  pay  the  cost  of   construction  of  the
          Facilities or to refund all or any principal amount of the Bonds,
          or any combination thereof.

               Section 2.10   Temporary  Bonds.  Pending the preparation of
          definitive Bonds, the  Pollution Control Corporation may  execute
          and the  Trustee shall authenticate and  deliver temporary Bonds.
          Temporary  Bonds shall  be issuable  as registered  Bonds without
          coupons, of any authorized denomination, and substantially in the
          form of the definitive Bonds but with  such omissions, insertions
          and  variations as may be appropriate for temporary Bonds, all as
          may   be  determined   by  the  Pollution   Control  Corporation.
          Temporary Bonds may  contain such reference to  any provisions of
          this Indenture as may be appropriate.  Every temporary Bond shall
          be  executed   by  the  Pollution  Control   Corporation  and  be
          authenticated  by the  Trustee upon  the  same conditions  and in
          substantially  the  same manner,  and  with like  effect,  as the
          definitive  Bonds.   As  promptly  as  practicable the  Pollution
          Control  Corporation shall  execute and shall  furnish definitive
          Bonds  and  thereupon  temporary  Bonds  may  be  surrendered  in
          exchange therefor without charge  at the Principal Office of  the
          Trustee,  and  the  Trustee  shall authenticate  and  deliver  in
          exchange  for such  temporary  Bonds a  like aggregate  principal
          amount of definitive Bonds of authorized denominations.  Until so
          exchanged the  temporary  Bonds shall  be  entitled to  the  same
          benefits under this Indenture as definitive Bonds.

               Section 2.11.  Cancellation of Bonds.  All Bonds which shall
          have  been surrendered to the Paying Agent or any Co-Paying Agent
          for  payment or redemption, and  all Bonds which  shall have been
          surrendered  to the  Registrar  for exchange  or registration  of
          transfer,  shall be  delivered to  the Trustee  for cancellation.
          All  Bonds   delivered  to  or   acquired  by  the   Trustee  for
          cancellation shall be canceled and destroyed by the Trustee.  The
          Trustee shall  furnish to the Pollution  Control Corporation, the
          Paying  Agent,  the Registrar  and  the  Company counterparts  of
          certificates evidencing  such  cancellation and  destruction  and
          specifying such Bonds by number.

               Section 2.12.  Payment of Principal  and Interest.   For the
          payment  of   interest  on  the  Bonds,   the  Pollution  Control
          Corporation shall cause to be deposited in the Bond Fund, on each
          interest payment date, solely out of the Receipts and Revenues of
          the  Pollution Control  Corporation from  the Loan  Agreement and
          other moneys  pledged therefor, an  amount sufficient to  pay the
          interest  to become  due  on such  interest  payment date.    The
          obligation of the Pollution Control Corporation to cause any such
          deposit to be made  hereunder shall be reduced  by the amount  of
          moneys in the Bond  Fund available on such interest  payment date
          for the payment of interest on the Bonds.

               For the payment of the principal of the Bonds upon maturity,
          the Pollution Control  Corporation shall cause to be deposited in
          the Bond Fund,  on the  stated or accelerated  date of  maturity,
          solely  out of the Receipts and Revenues of the Pollution Control
          Corporation  from the  Loan  Agreement and  other moneys  pledged
          therefor, an amount sufficient to pay the principal of the Bonds.
          The obligation of the Pollution  Control Corporation to cause any
          such deposit to be made hereunder  shall be reduced by the amount
          of moneys in the Bond Fund available on the maturity date for the
          payment of the principal of the Bonds.

               Section 2.13.  Applicability of Book-Entry Provisions. 
          Anything in  this Indenture to the  contrary notwithstanding, (a)
          the provisions  of the Blanket Issuer  Letter of Representations,
          dated October 12, 1995, between the Pollution Control Corporation
          and  The Depository Trust Company  relating to the  manner of and
          procedures  for  payment  and  redemption of  Bonds  and  related
          matters shall apply so long as such Depositary shall be the Owner
          of  all   Outstanding  Bonds   and  (b)  the   Pollution  Control
          Corporation, the Trustee  or the Paying Agent, as applicable, may
          enter  into a  similar agreement,  on terms  satisfactory to  the
          Company,  with  any  subsequent  Depositary  and  the  provisions
          thereof shall apply so long as such Depositary shall be the Owner
          of all Outstanding Bonds.

                                     ARTICLE III

                                 REDEMPTION OF BONDS

               Section 3.01.  Redemption Provisions.  (a)  The  Bonds shall
          be subject to redemption by the Pollution Control Corporation, at
          the direction of the Company, on any date on or  after October 1,
          2007 in whole at  any time or in part  from time to time,  at the
          applicable  redemption  price  (expressed  as  a  percentage   of
          principal amount) set forth  below, plus accrued interest  to the
          redemption date:

                         Redemption Period                  Redemption
							    Price
                         ----------------                   ---------------
               October 1, 2007 through September 30, 2008             102%
               October 1, 2008 through September 30, 2009             101%
               October 1, 2009 and thereafter                         100%

               (b)  The  Bonds  shall  be  subject  to  redemption  by  the
          Pollution Control  Corporation, at the direction  of the Company,
          in whole at any time at the principal amount thereof plus accrued
          interest to the redemption date, if:

                    (i)  the   Company  shall  have   determined  that  the
               continued   operation   of  the   Plant   is  impracticable,
               uneconomical or undesirable for any reason;

                    (ii)  the   Company  shall  have  determined  that  the
               continued  operation  of  the Facilities  is  impracticable,
               uneconomical  or undesirable  due to  (A) the  imposition of
               taxes,  other than  ad valorem  taxes currently  levied upon
               privately owned  property used for the  same general purpose
               as  the Facilities,  or  other liabilities  or burdens  with
               respect to the Facilities  or operation thereof, (B) changes
               in   technology,  in   environmental   standards  or   legal
               requirements or in the  economic availability of  materials,
               supplies, equipment or labor or (C) destruction of or damage
               to all or part of the Facilities;

                    (iii)  all or  substantially all  of the  Facilities or
               the Plant  shall have  been condemned  or  taken by  eminent
               domain; or

                    (iv)  the operation  of  the Facilities  or  the  Plant
               shall  have  been  enjoined  or shall  have  otherwise  been
               prohibited by,  or shall  conflict with, any  order, decree,
               rule or regulation of any court or of any federal,  state or
               local  regulatory  body,  administrative  agency   or  other
               governmental body.

               (c)  The Bonds  shall be subject to  mandatory redemption by
          the  Pollution  Control  Corporation,  at  the  principal  amount
          thereof  plus accrued  interest  to the  redemption date,  on the
          180th  day (or  such earlier  date as  may  be designated  by the
          Company)  after a  final determination  by a  court  of competent
          jurisdiction or an administrative agency,  to the effect that, as
          a result  of a failure by  the Company to perform  or observe any
          covenant,  agreement  or  representation  contained  in the  Loan
          Agreement, the  interest payable  on the  Bonds  is included  for
          federal income tax  purposes in  the gross income  of the  owners
          thereof, other  than any owner  of a  Bond who is  a "substantial
          user"  of the Facilities or a "related person" within the meaning
          of  Section 103(b)(13) of the 1954 Code.  No determination by any
          court or administrative  agency shall be considered final for the
          purposes of this Section  3.01 (c) unless the Company  shall have
          been given timely notice of the proceeding which resulted in such
          determination  and   an  opportunity  to   participate  in   such
          proceeding,  either directly or through  an owner of  a Bond, and
          until  the conclusion of any appellate review sought by any party
          to such proceeding or the expiration of the time for seeking such
          review. The Bonds shall be redeemed either in whole or in part in
          such  principal amount  that the  interest  payable on  the Bonds
          remaining outstanding after such redemption would not be included
          in the gross income of any  owner thereof, other than an owner of
          a  Bond  who  is a  "substantial  user" of  the  Facilities  or a
          "related person" within the  meaning of Section 103(b)(13) of the
          1954 Code.

               Section 3.02.  Selection of  Bonds to be Redeemed.   If less
          than  all  the Bonds  shall be  called  for redemption  under any
          provision of  this Indenture permitting  such partial redemption,
          the particular Bonds or portions of Bonds to be redeemed shall be
          selected by  the Trustee, in  such manner  as the Trustee  in its
          discretion  may deem  proper, in  the aggregate  principal amount
          designated to the Trustee by the Company or otherwise as required
          by  this Indenture; provided, however, that if, as indicated in a
          certificate of an Authorized  Company Representative delivered to
          the Trustee, the Company shall have offered to purchase all Bonds
          then  Outstanding and less than all such Bonds have been tendered
          to the Company for  such purchase, the Trustee, at  the direction
          of  an  Authorized  Company  Representative,  shall   select  for
          redemption  all such Bonds which shall not have been so tendered;
          and  provided,  further,  that the  portion  of  any  Bond to  be
          redeemed  shall  be in  the principal  amount  of $5,000  or some
          integral  multiple  thereof  and  that, in  selecting  Bonds  for
          redemption,  the Trustee  shall treat  each Bond  as representing
          that  number of Bonds which is obtained by dividing the principal
          amount  of such Bond by $5,000.   If it is determined that one or
          more,  but not  all,  of the  $5,000  units of  principal  amount
          represented  by any  such Bond  is to  be called  for redemption,
          then,  upon notice  of intention  to redeem  such $5,000  unit or
          units, the Owner of such Bond shall forthwith surrender such Bond
          to the  Paying Agent  or any Co-Paying  Agent for (y)  payment to
          such  Owner of  the  redemption price  (including the  redemption
          premium,  if  any, and  accrued interest  to  the date  fixed for
          redemption)  of  the $5,000  unit  or units  of  principal amount
          called  for redemption and  (z) delivery to  such Owner of  a new
          Bond or Bonds in the aggregate principal amount of the unredeemed
          balance  of the  principal  amount  of  any  such  Bond.    Bonds
          representing the  unredeemed balance  of the principal  amount of
          any  such Bond shall be  delivered to the  Owner thereof, without
          charge therefor.  If the Owner of any such Bond of a denomination
          greater than $5,000 shall fail to present such Bond to the Paying
          Agent  or  any  Co-Paying  Agent  for  payment  and  exchange  as
          aforesaid, such Bond shall,  nevertheless, become due and payable
          on the date fixed for redemption to the extent of the $5,000 unit
          or units of principal  amount called for redemption (and  to that
          extent only).

               Section 3.03.  Procedure for  Redemption.  (a) In  the event
          any of the  Bonds are  called for redemption,  the Trustee  shall
          give notice, in the name of the Pollution Control Corporation, of
          the  redemption of such Bonds, which notice shall (i) specify the
          Bonds to be redeemed, the redemption  date, the redemption price,
          and  the place or places  where amounts due  upon such redemption
          will  be  payable (which  shall be  the  Principal Office  of the
          Paying Agent or any Co-Paying Agent) and, if less than all of the
          Bonds are  to  be  redeemed,  the numbers  of  the  Bonds  to  be
          redeemed, and the portion of the principal amount of any Bond  to
          be  redeemed in part, (ii) state any condition to such redemption
          and  (iii)  state  that on  the  redemption  date,  and upon  the
          satisfaction of any such condition, the Bonds or portions thereof
          to be redeemed shall cease to bear interest.  Such notice may set
          forth  any additional  information relating  to such  redemption.
          Such  notice shall  be given  by Mail at  least thirty  (30) days
          prior to the date fixed for redemption to the Owners of the Bonds
          to be redeemed; provided, however, that failure duly to give such
          Notice  by  Mail, or  any defect  therein,  shall not  affect the
          validity of any  proceedings for  the redemption of  Bonds as  to
          which there  shall have  been no  such failure or  defect.   If a
          notice of redemption shall be unconditional, or if the conditions
          of a conditional notice or redemption  shall have been satisfied,
          then  upon presentation  and  surrender of  Bonds  so called  for
          redemption at the place or places of payment, such Bonds shall be
          redeemed.   The Trustee shall  promptly deliver to  the Company a
          copy of each such notice of redemption.

               (b) With respect  to any  notice of redemption  of Bonds  in
          accordance  with subsection  (a) or  (b) of Section  3.01 hereof,
          unless,  upon  the giving  of such  notice,  such Bonds  shall be
          deemed  to  have been  paid within  the  meaning of  Article VIII
          hereof, such  notice shall state  that such  redemption shall  be
          conditional upon the  receipt, by the Trustee at or  prior to the
          opening of business  on the  date fixed for  such redemption,  of
          moneys  sufficient to pay the  principal of and  premium, if any,
          and interest  on such  Bonds to  be  redeemed, and  that if  such
          moneys shall not have been so received said notice shall be of no
          force and  effect and the Pollution Control Corporation shall not
          be required  to redeem such Bonds.  In the event that such notice
          of redemption contains such  a condition and such moneys  are not
          so received, the  redemption shall  not be made  and the  Trustee
          shall within  a reasonable  time thereafter give  notice, in  the
          manner in which  the notice  of redemption was  given, that  such
          moneys were not so received.

               (c)  Any Bonds and  portions of Bonds  which have been  duly
          selected  for redemption  shall  cease to  bear  interest on  the
          specified redemption date provided  that moneys sufficient to pay
          the principal of,  premium, if  any, and interest  on such  Bonds
          shall  be  on deposit  with  the Trustee  on the  date  fixed for
          redemption  so that  such  Bonds will  be  deemed to  be paid  in
          accordance with Article VIII hereof.

               Section 3.04.  Payment   of  Redemption  Price.     For  the
          redemption of any of the Bonds, the Pollution Control Corporation
          shall cause to be deposited  in the Bond Fund, on the  redemption
          date,  solely out of the  Receipts and Revenues  of the Pollution
          Control Corporation from the Loan Agreement, an amount sufficient
          to  pay the  principal of  and premium,  if any, and  interest to
          become  due on  such  redemption date.    The obligation  of  the
          Pollution Control  Corporation to  cause any  such deposit to  be
          made hereunder  shall be reduced  by the amount of  moneys in the
          Bond  Fund available on such  redemption date for  payment of the
          principal of and  premium, if  any, and accrued  interest on  the
          Bonds to be redeemed.

               Section 3.05.  No   Partial    Redemption   After   Default.
          Anything in  this Indenture  to the contrary  notwithstanding, if
          there shall have occurred  and be continuing an Event  of Default
          defined in clause  (a) or (b) of  the first paragraph  of Section
          9.01 hereof, there shall be no redemption of less than all of the
          Bonds  at the time Outstanding other than a partial redemption in
          connection with an  offer by  the Company to  purchase all  Bonds
          Outstanding  as contemplated  in the  first proviso to  the first
          sentence of Section 3.02 hereof.


                                      ARTICLE IV

                                    THE BOND FUND

               Section 4.01.  Creation  of  Bond  Fund.   There  is  hereby
          created and established with the Trustee a trust fund in the name
          of the  Pollution Control Corporation to  be designated "Coconino
          County, Arizona Pollution  Control Corporation Pollution  Control
          Revenue  Bonds,  1997 Series  B  (Tucson  Electric Power  Company
          Navajo  Project) Bond  Fund".   The  Trustee shall  establish and
          maintain within the  Bond Fund such segregated subaccounts as may
          be requested by  an Authorized Company Representative.   The Bond
          Fund, and  all moneys and certificated  securities therein, shall
          be kept in the possession of the Trustee.

               Section 4.02.  Liens.    The  Pollution Control  Corporation
          shall not create any lien upon the Bond Fund or upon the Receipts
          and  Revenues of the Pollution Control  Corporation from the Loan
          Agreement other than the lien hereby created.

               Section 4.03.  Deposits into Bond Fund.   (a) There shall be
          deposited into the Bond Fund:

                    (i) the  accrued interest, if any, on the Bonds accrued
               to  the date  of delivery  thereof and  paid by  the initial
               purchasers thereof;

                    (ii) all Loan Payments; and

                    (iii) all  other moneys  received by the  Trustee under
               and pursuant to any provision  of the Loan Agreement,  other
               than Sections 5.03, 5.04 and 8.05 thereof, or from any other
               source when  accompanied by  directions by the  Company that
               such moneys are to be paid into the Bond Fund.

               (b) All income or  other gain from the investment  of moneys
          in the Bond Fund shall be deposited into the Bond Fund.

               Section 4.04.  Use of Moneys in Bond  Fund.  Moneys, if any,
          paid into the Bond Fund pursuant to clause (i) of Section 4.03(a)
          hereof shall  be applied to the payment of interest on the Bonds.
          Except  as otherwise  provided in  Sections 4.06, 9.01  and 10.04
          hereof,  all other moneys in  the Bond Fund  constituting part of
          the  Trust Estate shall  be used  solely for  the payment  of the
          principal of and  premium, if any,  and interest on the  Bonds as
          the   same  shall  become  due  and  payable  at  maturity,  upon
          redemption or otherwise.  

               Section 4.05.  Custody of Bond  Fund; Withdrawal of  Moneys.
          The Bond Fund shall be in  the custody of the Trustee but  in the
          name  of  the Pollution  Control  Corporation  and the  Pollution
          Control Corporation hereby authorizes  and directs the Trustee to
          withdraw from the Bond Fund and furnish to the Paying Agent funds
          constituting part  of  the Trust  Estate  sufficient to  pay  the
          principal  of and premium, if  any, and interest  on the Bonds as
          the same shall become due and  payable, and to withdraw from  the
          Bond Fund  funds  sufficient to  pay  any other  amounts  payable
          therefrom as the same shall become due and payable.

               Section 4.06.  Bonds  Not  Presented for  Payment.    In the
          event  any  Bonds shall  not be  presented  for payment  when the
          principal thereof and premium, if any, thereon become due, either
          at  maturity or  at  the date  fixed  for redemption  thereof  or
          otherwise, if moneys sufficient to pay such Bonds are held by the
          Paying Agent or any Co-Paying Agent for the benefit of the Owners
          thereof, the Paying Agent shall segregate and hold such moneys in
          trust, without liability for interest thereon, for the benefit of
          the Owners  of such Bonds, who  shall, except as provided  in the
          following paragraph, thereafter be restricted exclusively to such
          fund  or  funds for  the satisfaction  of  any claim  of whatever
          nature on their  part under  this Indenture or  relating to  said
          Bonds.

               Any moneys which  the Paying Agent shall  segregate and hold
          in trust for the payment of the principal of and premium, if any,
          or  interest on  any Bond  and remaining  unclaimed for  one year
          after such principal, premium, if any, or interest has become due
          and  payable shall,  upon the  Company's written  request to  the
          Paying Agent, be paid to the  Company, with notice to the Trustee
          of  such action; provided, however, that  before the Paying Agent
          shall  be required to make  any such repayment,  the Paying Agent
          may,  and at the request of the  Trustee shall, at the expense of
          the Company cause notice to  be given once by Publication  to the
          effect that such money  remains unclaimed and that, after  a date
          specified  therein, which shall not be less than thirty (30) days
          from  the  date  of such  notice  by  Publication,  any unclaimed
          balance  of  such  moneys then  remaining  will  be  paid to  the
          Company.    After the  payment of  such  unclaimed moneys  to the
          Company, the Owner of such Bond shall thereafter look only to the
          Company for  the  payment  thereof,  and  all  liability  of  the
          Pollution Control  Corporation, the Trustee and  the Paying Agent
          with respect to such moneys shall thereupon cease.

               Section 4.07.  Moneys   Held  in  Trust.    All  moneys  and
          Investment Securities held by  the Trustee in the Bond  Fund, and
          all moneys required  to be deposited with or paid  to the Trustee
          for deposit into the Bond Fund, and all moneys withdrawn from the
          Bond  Fund and  held  by  the  Trustee,  the  Paying  Agent,  any
          Co-Paying Agent, shall be  held by the Trustee, the  Paying Agent
          or any  Co-Paying Agent, as the  case may be, in  trust, and such
          moneys and Investment Securities (other than moneys held pursuant
          to Section 4.06 hereof and  moneys or Investment Securities  held
          in the Rebate Fund established in furtherance of the  obligations
          of  the Company  under clause  (b) of  Section  6.04 of  the Loan
          Agreement), while so held or so required to be deposited or paid,
          shall constitute part  of the Trust Estate and be  subject to the
          lien  and  security  interest  created  hereby  in  favor of  the
          Trustee, for the benefit of  the Owners from time to time  of the
          Bonds.  The Company shall have no right, title or interest in the
          Bond Fund, except such rights as may arise after the right, title
          and interest  of the Trustee in  and to the Trust  Estate and all
          covenants,  agreements and  other  obligations  of the  Pollution
          Control Corporation  under  this  Indenture  shall  have  ceased,
          terminated  and become  void and  shall have  been satisfied  and
          discharged in accordance with Article VIII hereof.


                                      ARTICLE V

                               DISPOSITION OF PROCEEDS

               Section 5.01.  Disposition of  Proceeds.  The  proceeds from
          the issuance and sale  of the Bonds shall be applied  as provided
          in Section 4.03 of the Loan Agreement.


                                      ARTICLE VI

                                     INVESTMENTS

               Section 6.01.  Investments.   The  moneys in  the Bond  Fund
          shall,  at  the  direction  of   the  Company,  be  invested  and
          reinvested in  Investment Securities.  Any  Investment Securities
          may  be purchased  subject to  options or  other rights  in third
          parties to acquire the  same.  Subject to the  further provisions
          of  this  Section 6.01,  such investments  shall  be made  by the
          Trustee  as  directed   and  designated  by  the   Company  in  a
          certificate  of, or  telephonic  advice promptly  confirmed by  a
          certificate  of, an  Authorized Company  Representative.   As and
          when any  amounts thus invested  may be needed  for disbursements
          from  the Bond  Fund, the  Trustee shall  request the  Company to
          designate such investments to be sold or otherwise converted into
          cash to  the credit of  the Bond Fund  as shall be  sufficient to
          meet  such disbursement  requirements and  shall then  follow any
          directions   in  respect   thereto  of   an  Authorized   Company
          Representative.   As long as  no Event of Default  (as defined in
          Section 9.01 hereof) shall have  occurred and be continuing,  the
          Company shall have the  right to designate the investments  to be
          sold  and  to  otherwise  direct  the  Trustee  in  the  sale  or
          conversion to cash of the investments made with the moneys in the
          Bond  Fund,  provided  that  the  Trustee shall  be  entitled  to
          conclusively  assume the  absence  of any  such Event  of Default
          unless  it has notice thereof within the meaning of Section 10.05
          hereof.

                                     ARTICLE VII

                                  GENERAL COVENANTS

               Section 7.01.  No  General  Obligations.    Each  and  every
          covenant herein made, including all covenants made in the various
          sections of this  Article VII, is  predicated upon the  condition
          that neither the  County of  Coconino, Arizona nor  the State  of
          Arizona  shall in  any event  be liable  for the  payment of  the
          principal of, or premium, if any, or interest on the Bonds or for
          the performance of any  pledge, mortgage, obligation or agreement
          created by or arising  out of this  Indenture or the issuance  of
          the Bonds, and further  that neither the Bonds, nor  the premium,
          if any, or interest thereon, nor any such obligation or agreement
          of  the  Pollution  Control  Corporation shall  be  construed  to
          constitute an indebtedness  of the County of Coconino, Arizona or
          the  State of Arizona within the meaning of any constitutional or
          statutory provisions whatsoever.  The Bonds and  the interest and
          premium, if  any, thereon  shall  be limited  obligations of  the
          Pollution Control  Corporation payable  solely from the  Receipts
          and Revenues of  the Pollution Control Corporation  from the Loan
          Agreement and the other moneys pledged therefor.

               The Pollution Control Corporation shall promptly cause to be
          paid, solely from the sources stated herein, the principal of and
          premium, if any,  and interest  on every Bond  issued under  this
          Indenture at the place, on  the dates and in the manner  provided
          herein and in said Bonds according to the true intent and meaning
          thereof.  

               Section 7.02.  Performance  of  Covenants  of the  Pollution
          Control  Corporation;  Representations.   The  Pollution  Control
          Corporation shall  faithfully perform  at all times  any and  all
          covenants, undertakings, stipulations and provisions contained in
          this Indenture, in any and every Bond executed, authenticated and
          delivered hereunder,  and in all proceedings  pertaining thereto.
          The  Pollution Control  Corporation  represents that  it is  duly
          authorized  under  the  Constitution and  laws  of  the  State of
          Arizona to issue the  Bonds authorized hereby, to enter  into the
          Loan  Agreement and this Indenture,  and to pledge  and assign to
          the Trustee the Trust Estate, and  that the Bonds in the hands of
          the  Owners thereof  are and  will be  valid and  binding limited
          obligations of the Pollution Control Corporation.

               Section 7.03.  Maintenance of Rights and  Powers; Compliance
          with  Laws.  The Pollution Control Corporation shall at all times
          use  its best  efforts  to maintain  its  corporate existence  or
          assure the assumption of its  obligations under this Indenture by
          any  public body succeeding  to its powers under  the Act; and it
          shall at all times use its  best efforts to comply with all valid
          acts,   rules,  regulations,   orders   and  directions   of  any
          legislative, executive, administrative or  judicial body known to
          it to be applicable to the Loan Agreement and this Indenture.

               Section 7.04.  Enforcement  of  Obligations of  the Company;
          Amendments.    Upon  receipt  of written  notification  from  the
          Trustee, the  Pollution Control Corporation shall  cooperate with
          the Trustee in enforcing the obligation  of the Company to pay or
          cause  to be paid  all the payments  and other  costs and charges
          payable by the Company  under the Loan Agreement.   The Pollution
          Control  Corporation shall not enter  into any agreement with the
          Company  amending the  Loan Agreement  without the  prior written
          consent  of the Trustee  and compliance  with Sections  12.06 and
          12.07 of this  Indenture (a  revision to  Exhibit A  to the  Loan
          Agreement not  being deemed  an amendment  for  purposes of  this
          Section).

               Section 7.05.  Further Instruments.   The Pollution  Control
          Corporation shall,  upon the  reasonable request of  the Trustee,
          from time to  time execute and  deliver such further  instruments
          and take such  further action as may be reasonable  and as may be
          required to carry out the  purposes of this Indenture;  provided,
          however,  that no  such instruments or  actions shall  pledge the
          credit or  taxing power of  the State  of Arizona, the  County of
          Coconino,   the  Pollution  Control   Corporation  or  any  other
          political subdivision of said State.

               Section 7.06.  No Disposition  of Trust  Estate.   Except as
          permitted  by this  Indenture, the Pollution  Control Corporation
          shall  not sell, lease, pledge, assign or otherwise dispose of or
          encumber its interest in  the Trust Estate and will  promptly pay
          or cause to be discharged or make adequate provision to discharge
          any lien or charge on any part thereof not permitted hereby.

               Section 7.07.  Financing Statements.  The  Pollution Control
          Corporation  and the Trustee shall cooperate  with the Company in
          causing appropriate financing  statements naming  the Trustee  as
          pledgee of  the Receipts  and Revenues  of the Pollution  Control
          Corporation  from the  Loan  Agreement and  of  the other  moneys
          pledged under the Indenture  for the payment of the  principal of
          and premium,  if any, and interest  on the Bonds, and  as pledgee
          and  assignee of  the  balance  of  the  Trust  Estate,  and  the
          Pollution  Control Corporation  shall cooperate with  the Trustee
          and the Company in causing appropriate continuation statements to
          be  duly filed and recorded  in the appropriate  state and county
          offices as required  by the provisions of the  Uniform Commercial
          Code or other similar law as adopted in the State  of Arizona and
          any other applicable jurisdiction, as  from time to time amended,
          in order to perfect and  maintain the security interests  created
          by this Indenture.

               Section 7.08.  Tax   Covenants;   Rebate  Fund.     (a)  The
          Pollution Control  Corporation covenants  for the benefit  of all
          Owners from time  to time of the Bonds that  it will not directly
          or indirectly use or  (to the extent within its  control), permit
          the use  of, the proceeds of any of the  Bonds or any other funds
          of the Pollution Control Corporation, or take or omit to take any
          other action, if and to  the extent that such use, or  the taking
          or omission to take such action, would cause any of  the Bonds to
          be "arbitrage bonds"  within the  meaning of Section  148 of  the
          Code or otherwise subject to federal income taxation by reason of
          Sections 103  and 141 through 150  of the Code or  Section 103 of
          the  1954 Code,  as  applicable, and  any applicable  regulations
          promulgated  thereunder.    To  that end  the  Pollution  Control
          Corporation  covenants to comply with  all covenants set forth in
          the  Tax  Agreement,  which  is  hereby  incorporated  herein  by
          reference as though fully set forth herein.

               (b)  The   Trustee  shall  establish  and  maintain  a  fund
          separate from any other fund established and maintained hereunder
          designated   the  "Coconino  County,  Arizona  Pollution  Control
          Corporation  Pollution  Control  Revenue  Bonds,  1997  Series  B
          (Tucson  Electric  Power  Company Navajo  Project)  Rebate  Fund"
          (herein  called  the  "Rebate   Fund")  in  accordance  with  the
          provisions of the  Tax Agreement.   Within the  Rebate Fund,  the
          Trustee  shall maintain such accounts as shall be directed by the
          Company in order  for the Pollution  Control Corporation and  the
          Company  to comply  with  the provisions  of  the Tax  Agreement.
          Subject  to the  transfer  provisions provided  in paragraph  (c)
          below,  all money at any time  deposited in the Rebate Fund shall
          be held  by  the Trustee  in  trust, to  the  extent required  to
          satisfy the Rebate Requirement (as defined in the Tax Agreement),
          for  payment to  the United  States of  America, and  neither the
          Company, the  Pollution Control  Corporation or the  Owners shall
          have  any  rights  in  or claim  to  such  moneys.    All amounts
          deposited into or on deposit in the Rebate Fund shall be governed
          by this Section 7.08,  by Section 6.04 of the  Loan Agreement and
          by the Tax Agreement.   The Trustee shall conclusively  be deemed
          to  have  complied  with  such  provisions   if  it  follows  the
          directions  of  the Company,  including  supplying all  necessary
          information in the  manner set  forth in the  Tax Agreement,  and
          shall  not  be required  to take  any  actions thereunder  in the
          absence of written directions from the Company.

               (c)  Upon receipt of the Company's written instructions, the
          Trustee  shall remit part  or all of  the balances  in the Rebate
          Fund  to  the United  States  of America,  as  so  directed.   In
          addition, if the  Company so directs,  the Trustee shall  deposit
          moneys into  or transfer  moneys out of  the Rebate Fund  from or
          into  such accounts or funds as directed by the Company's written
          directions.  Any funds remaining in the  Rebate Fund after all of
          the Bonds shall have  been paid and any Rebate  Requirement shall
          have   been   satisfied,   or   provision   therefor   reasonably
          satisfactory  to the  Trustee  shall  have  been made,  shall  be
          withdrawn and remitted to the Company.

               (d)  Notwithstanding  any provision  of this  Indenture, the
          obligation  to remit the Rebate Requirement  to the United States
          of  America and  to comply  with all  other requirements  of this
          Section  7.08, Section  6.04 of  the Loan  Agreement and  the Tax
          Agreement  shall  survive  the  payment  of  the  Bonds  and  the
          satisfaction and discharge of this Indenture.

               Section 7.09.  Notices of  Trustee.  The Trustee  shall give
          notice to  both the Pollution Control Corporation and the Company
          whenever  it is  required hereby  to give  notice to  either and,
          additionally,  shall furnish to the Pollution Control Corporation
          and the Company copies of any Notice by Mail or Publication given
          by it pursuant to any provision hereof.


                                     ARTICLE VIII

                                      DEFEASANCE

               Section 8.01.  Defeasance.      If  the   Pollution  Control
          Corporation shall  pay or cause  to be paid  to the Owner  of any
          Bond secured hereby  the principal  of and premium,  if any,  and
          interest due  and  payable,  and thereafter  to  become  due  and
          payable,  upon  such Bond  or  any portion  of  such Bond  in the
          principal amount of $5,000 or any integral multiple thereof, such
          Bond or portion thereof shall cease  to be entitled to any  lien,
          benefit  or security  under  this Indenture.    If the  Pollution
          Control Corporation shall pay  or cause to be paid to  the Owners
          of all the Bonds secured hereby the principal of  and premium, if
          any, and interest due  and payable, and thereafter to  become due
          and payable, thereon, and shall pay or cause to be paid all other
          sums  payable  hereunder including,  without  limitation, amounts
          payable pursuant to Section 10.04 hereof, then, and in that case,
          the right,  title and interest of the Trustee in and to the Trust
          Estate shall thereupon cease, terminate and become void.  In such
          event,  the Trustee shall assign,  transfer and turn  over to the
          Company  the Trust  Estate,  including, without  limitation,  any
          surplus in the  Bond Fund and any balance remaining  in any other
          fund created under this Indenture.

               All or any portion of Outstanding Bonds or portions of Bonds
          in principal amounts of $5,000  or any integral multiple thereof,
          shall  prior to the maturity or redemption date thereof be deemed
          to  have been  paid  within  the  meaning  and  with  the  effect
          expressed in  this Article VIII,  and the entire  indebtedness of
          the Pollution  Control Corporation with respect  thereof shall be
          satisfied and discharged, when

                    (a)  in the event  said Bonds or  portions thereof have
               been selected for redemption in accordance with Section 3.02
               hereof, the Trustee  shall have given, or  the Company shall
               have  given  to  the  Trustee  in  form satisfactory  to  it
               irrevocable instructions  to give,  on a date  in accordance
               with  the  provisions  of  Section 3.03  hereof,  notice  of
               redemption of such Bonds or portions thereof,

                    (b) there  shall have  been deposited with  the Trustee
               either moneys  in an  amount which shall  be sufficient,  or
               Government  Obligations which  shall not  contain provisions
               permitting  the  redemption thereof  at  the  option of  the
               issuer,  the principal of  and the  interest on  which, when
               due, and  without regard  to any reinvestment  thereof, will
               provide  moneys which,  together  with the  moneys, if  any,
               deposited with or held by  the Trustee, shall be sufficient,
               to pay  when due the principal  of and premium, if  any, and
               interest due and  to become  due on said  Bonds or  portions
               thereof on and prior to the redemption date or maturity date
               thereof, as the case may be, and

                    (c)  in the event said Bonds or portions thereof do not
               mature and are not to be redeemed within the next succeeding
               sixty (60) days, the Company shall have given the Trustee in
               form satisfactory to it irrevocable instructions to give, as
               soon  as practicable  in  the same  manner  as a  notice  of
               redemption  is  given pursuant  to  Section  3.03 hereof,  a
               notice  to the Owners of said Bonds or portions thereof that
               the  deposit required by clause (b) above has been made with
               the  Trustee and  that said  Bonds or  portions thereof  are
               deemed  to have been  paid in  accordance with  this Article
               VIII and stating the maturity or redemption date upon  which
               moneys  are to be available for the payment of the principal
               of  and premium,  if  any, and  interest  on said  Bonds  or
               portions thereof.

               Neither the Government Obligations nor moneys deposited with
          the Trustee  pursuant  to  this Article  VIII  nor  principal  or
          interest  payments on  any such  Government Obligations  shall be
          withdrawn or used for any purpose other than, and such Government
          Obligations, moneys  and principal or interest  payments shall be
          held in trust for,  the payment of the principal  of and premium,
          if any, and interest on said Bonds or portions thereof; provided,
          that any cash received  from such principal or  interest payments
          on such Government Obligations deposited with the Trustee, if not
          then  needed for such purposes, shall, to the extent practicable,
          be invested in  Government Obligations of  the type described  in
          clause  (b) of the preceding  paragraph maturing at  times and in
          amounts  sufficient to pay when due the principal of and premium,
          if any,  and interest  to become  due on  said Bonds  or portions
          thereof on and  prior to  such redemption date  or maturity  date
          thereof,  as the  case  may be,  and  interest earned  from  such
          reinvestments shall be paid  over to the Company, as  received by
          the  Trustee, free  and  clear  of  any  trust,  lien  or  pledge
          hereunder.    If payment  of less  than all  the  Bonds is  to be
          provided for in the  manner and with the effect provided  in this
          Article  VIII, the Trustee shall select such Bonds or portions of
          Bonds  in  the  manner  specified  by  Section  3.02  hereof  for
          selection  for redemption of less than all Bonds in the principal
          amount designated to the Trustee by  the Company.  At or prior to
          the  time of the deposit  of any Government  Obligations with the
          Trustee pursuant to this Section 8.01,  the Company shall provide
          the  Trustee with a certificate of an accountant or an accounting
          firm  as to the sufficiency of such Government Obligations to pay
          when due the principal of and  premium, if any, and interest  due
          and to  become due as  set forth in  clause (b) of  the preceding
          paragraph.


                                      ARTICLE IX

                                DEFAULTS AND REMEDIES

               Section 9.01.  Events  of Default.   Each  of  the following
          events shall constitute and  is referred to in this  Indenture as
          an "Event of Default":

                    (a)  a failure to pay  the principal of  or premium, if
               any, on any of the Bonds  when the same shall become due and
               payable at maturity, upon redemption or otherwise;

                    (b)  a failure to pay an installment of interest on any
               of the Bonds after  such interest shall have become  due and
               payable for a period of thirty (30) days;

                    (c) a  failure by the Pollution  Control Corporation to
               observe and perform  any covenant,  condition, agreement  or
               provision (other than as specified in clauses (a) and (b) of
               this  Section  9.01)  contained  in the  Bonds  or  in  this
               Indenture on  the part of the  Pollution Control Corporation
               to be  observed or  performed, which failure  shall continue
               for  a  period of  sixty  (60)  days  after written  notice,
               specifying such failure and  requesting that it be remedied,
               shall have  been given to the  Pollution Control Corporation
               and the Company by  the Trustee, which may give  such notice
               in  its discretion and which  shall give such  notice at the
               written  request of Owners of not less than 33% in principal
               amount of the Bonds then Outstanding, unless the Trustee, or
               the  Trustee and Owners of  a principal amount  of Bonds not
               less  than the principal amount of Bonds the Owners of which
               requested that such  notice be  given, as the  case may  be,
               shall  agree in writing to an extension of such period prior
               to its  expiration; provided, however, that  the Trustee, or
               the Trustee  and  the Owners  of  such principal  amount  of
               Bonds, as the case may be, shall be deemed to have agreed to
               an  extension  of  such   period  if  corrective  action  is
               initiated by  the  Pollution  Control  Corporation,  or  the
               Company  on  behalf of  the  Pollution  Control Corporation,
               within such period and is being diligently pursued.

               Upon the occurrence  and continuance of any Event of Default
          described  in clause (a) or  (b) of the  preceding paragraph, the
          Trustee  may, and at  the written request  of Owners of  not less
          than  33% in principal amount of Bonds then Outstanding shall, by
          written  notice  to the  Pollution  Control  Corporation and  the
          Company, declare  the Bonds  to be  immediately due  and payable,
          whereupon  they  shall, without  further  action,  become and  be
          immediately due and payable, anything in this Indenture or in the
          Bonds to the contrary notwithstanding, and the Trustee shall give
          notice thereof by Mail to all Owners of Outstanding Bonds.

               The  provisions of  the  preceding  paragraph, however,  are
          subject  to the  condition that  if, after  the principal  of the
          Bonds shall  have been  so declared  to be  due and payable,  and
          before any judgment  or decree for the payment of  the moneys due
          shall have been obtained or entered as hereinafter  provided, the
          Pollution Control  Corporation shall  cause to be  deposited with
          the Trustee a sum  sufficient to pay all matured  installments of
          interest upon all  Bonds and the principal  of any and  all Bonds
          which  shall have  become due  otherwise than  by reason  of such
          declaration (with interest upon such principal and, to the extent
          permissible by law, on  overdue installments of interest, at  the
          rate per annum borne by  the Bonds) and such amounts as  shall be
          sufficient to  cover reasonable compensation and reimbursement of
          expenses payable to the Trustee and any predecessor  Trustee, and
          all  Events of  Default hereunder  other  than nonpayment  of the
          principal   of  Bonds  which  shall   have  become  due  by  said
          declaration shall have  been remedied, then, in  every such case,
          such Event of Default shall be deemed waived and such declaration
          and  its consequences  rescinded  and annulled,  and the  Trustee
          shall promptly give written notice of such waiver, rescission and
          annulment to  the Pollution Control Corporation  and the Company,
          and,  if notice of the acceleration  of the Bonds shall have been
          given to the Owners  of the Bonds,  shall give notice thereof  by
          Mail  to all  Owners of  Outstanding Bonds;  but no  such waiver,
          rescission and annulment shall extend to or affect any subsequent
          Event  of  Default  or  impair any  right  or  remedy  consequent
          thereon.

               Section 9.02.  Remedies.      Upon   the    occurrence   and
          continuance of any  Event of Default, then and in every such case
          the Trustee in its  discretion may, and upon the  written request
          of Owners of not less than  a majority in principal amount of the
          Bonds  then   Outstanding  and   receipt  of  indemnity   to  its
          satisfaction shall,  in its  own name and  as the  Trustee of  an
          express trust:

                    (a) by mandamus, or other suit, action or proceeding at
               law  or in equity,  enforce all rights of  the Owners of the
               Bonds, and require the  Pollution Control Corporation or the
               Company  to carry out any agreements with or for the benefit
               of such Owners  and to perform its or their duties under the
               Act, the Loan Agreement and this Indenture;

                    (b) bring suit upon the Bonds; or

                    (c)  by action  or suit  in equity  enjoin any  acts or
               things which may be  unlawful or in violation of  the rights
               of the Owners of the Bonds.

               Section 9.03.  Restoration to Former Position.  In the event
          that any proceeding  taken by  the Trustee to  enforce any  right
          under this  Indenture shall  have been discontinued  or abandoned
          for  any reason, or shall  have been determined  adversely to the
          Trustee, then the Pollution  Control Corporation, the Trustee and
          the  Owners shall  be restored, subject  to any  determination in
          such proceeding, to their  former positions and rights hereunder,
          respectively, and all rights, remedies  and powers of the Trustee
          shall continue as though no such proceeding had been taken.

               Section 9.04.  Owners'   Right    to   Direct   Proceedings.
          Anything in  this Indenture to the  contrary notwithstanding, the
          Owners  of a  majority  in principal  amount  of the  Bonds  then
          Outstanding hereunder shall have the  right, by an instrument  in
          writing executed  and delivered  to  the Trustee,  to direct  the
          time,  method and  place of  conducting all  remedial proceedings
          available to the  Trustee under this Indenture  or exercising any
          trust  or  power  conferred on  the  Trustee  by this  Indenture;
          provided,  however, that  such direction  shall not  be otherwise
          than  in accordance with law and the provisions of this Indenture
          and   that  the  Trustee  shall  have  the  right  (but  not  the
          obligation)  to  decline to  follow  any  such direction  if  the
          Trustee,  being  advised by  counsel,  shall  determine that  the
          action or proceeding so directed may not lawfully be taken, or if
          the  Trustee in  good faith  shall determine  that the  action or
          proceedings  so directed  would involve  the Trustee  in personal
          liability or if the Trustee in good faith shall so determine that
          the  actions or  forbearances  specified in  or pursuant  to such
          direction  would be unduly prejudicial to the interests of Owners
          not  joining in the giving of said direction, it being understood
          that the Trustee  shall have no duty to ascertain  whether or not
          such  actions  or forbearances  are  unduly  prejudicial to  such
          Owners.  

               Section 9.05.  Limitation  on  Owners'  Right  to  Institute
          Proceedings.  No Owner of Bonds shall have any right to institute
          any  suit,  action or  proceeding  in equity  or at  law  for the
          execution  of any trust or  power hereunder, or  any other remedy
          hereunder or on  said Bonds, unless  such Owner previously  shall
          have given to the Trustee  written notice of an Event  of Default
          as hereinabove provided and  unless the Owners of not less than a
          majority in principal amount of the Bonds then Outstanding  shall
          have  made written request  of the  Trustee so  to do,  after the
          right to  institute said  suit, action  or proceeding  shall have
          accrued,  and  shall  have  afforded  the  Trustee  a  reasonable
          opportunity to proceed  to institute  the same in  either its  or
          their name, and unless there also  shall have been offered to the
          Trustee  security and  indemnity satisfactory  to it  against the
          costs,  expenses  and  liabilities  to  be  incurred  therein  or
          thereby,  and  the  Trustee  shall not  have  complied  with such
          request within a reasonable  time; and such notification, request
          and offer of indemnity are hereby declared in every such case, at
          the  option of  the Trustee,  to be  conditions precedent  to the
          institution  of  said  suit,   action  or  proceeding;  it  being
          understood and intended that no one  or more of the Owners of the
          Bonds shall have any right in any manner whatever by his or their
          action  to  affect, disturb  or  prejudice the  security  of this
          Indenture,  or to enforce any right hereunder or under the Bonds,
          except in the manner herein provided, and that all suits, actions
          and proceedings at law or in equity shall be instituted, had  and
          maintained  in  the  manner herein  provided  and  for  the equal
          benefit of all Owners of the Bonds.

               Section 9.06.  No  Impairment of  Right to  Enforce Payment.
          Notwithstanding any other provision  in this Indenture, the right
          of any Owner of a Bond to receive payment of the principal of and
          premium, if  any, and  interest on  such Bond,  on  or after  the
          respective due dates expressed therein, or to  institute suit for
          the enforcement of any  such payment on or after  such respective
          dates, shall not be  impaired or affected without the  consent of
          such Owner.

               Section 9.07.  Proceedings by Trustee without  Possession of
          Bonds.  All rights of action under this Indenture or under any of
          the Bonds secured hereby which are enforceable by the Trustee may
          be enforced by it without the  possession of any of the Bonds, or
          the production thereof on the trial or other proceedings relative
          thereto, and any  such suit, action  or proceeding instituted  by
          the  Trustee shall  be  brought in  its name  for  the equal  and
          ratable  benefit of  the  Owners of  the  Bonds, subject  to  the
          provisions of this Indenture.

               Section 9.08.  No  Remedy  Exclusive.    No   remedy  herein
          conferred upon or reserved to the Trustee or to the Owners of the
          Bonds  is intended  to  be  exclusive  of  any  other  remedy  or
          remedies, and each and every such remedy shall be cumulative, and
          shall be in  addition to  every other remedy  given hereunder  or
          under  the Loan Agreement, now or hereafter existing at law or in
          equity or by statute.

               Section 9.09.  No Waiver of Remedies.   No delay or omission
          of the Trustee or of any Owner of a Bond to exercise any right or
          power  accruing upon any default  shall impair any  such right or
          power or shall  be construed to be a waiver  of any such default,
          or an acquiescence therein;  and every power and remedy  given by
          this Article  IX to the Trustee  and to the Owners  of the Bonds,
          respectively, may be exercised from time to time  and as often as
          may be deemed expedient.

               Section 9.10.  Application of  Moneys.  Any  moneys received
          by the  Trustee,  by any  receiver  or by  any  Owner of  a  Bond
          pursuant  to any right given or action taken under the provisions
          of this  Article IX, after  payment of the costs  and expenses of
          the proceedings resulting in the collection of such moneys and of
          all  amounts due to the Trustee and any predecessor Trustee under
          Section 10.04 hereof, shall be deposited in the Bond Fund and all
          moneys so deposited in the Bond Fund during the continuance of an
          Event  of Default  (other than  moneys for  the payment  of Bonds
          which had matured or otherwise become payable prior to such Event
          of Default or for the payment of interest due prior to such Event
          of Default) shall be applied as follows:


                    (a) Unless the  principal of all  the Bonds shall  have
               become due and payable, all such moneys shall be applied (i)
               first, to the payment to the persons entitled thereto of all
               installments  of  interest  then  due  on  the  Bonds,  with
               interest on overdue installments, if lawful, at the rate per
               annum borne by  the Bonds, in  the order of maturity  of the
               installments of  such interest and, if  the amount available
               shall  not  be sufficient  to  pay  in full  any  particular
               installment  of  interest,  then  to  the  payment  ratably,
               according to  the amounts due on such  installment, and (ii)
               second, to  the payment to  the persons entitled  thereto of
               the  unpaid principal of any  of the Bonds  which shall have
               become due (other than  Bonds called for redemption  for the
               payment of which money is held pursuant to the provisions of
               this Indenture), with  interest on such Bonds at  their rate
               from the respective dates upon which they became due and, if
               the  amount available shall not be sufficient to pay in full
               Bonds  due  on  any  particular  date,  together  with  such
               interest,  then to  the  payment ratably,  according to  the
               amount of principal and  interest due on such date,  in each
               case  to   the   persons  entitled   thereto,  without   any
               discrimination or privilege.

                    (b) If the principal of all the Bonds shall have become
               due and payable,  all such  moneys shall be  applied to  the
               payment of  the principal and  interest then due  and unpaid
               upon  the  Bonds,  with  interest on  overdue  interest  and
               principal,  as aforesaid, without  preference or priority of
               principal over interest or of interest over principal, or of
               any installment  of interest  over any other  installment of
               interest,  or  of any  Bond  over any  other  Bond, ratably,
               according to the amounts  due respectively for principal and
               interest,  to  the  persons  entitled  thereto  without  any
               discrimination or privilege.

                    (c) If the principal of all the Bonds shall have become
               due  and payable, and if acceleration of the maturity of the
               Bonds by  reason of such  Event of Default  shall thereafter
               have  been rescinded  and annulled  under the  provisions of
               this Article IX, then,  subject to the provisions  of clause
               (b)  of this Section 9.10  which shall be  applicable in the
               event that the principal of all the Bonds shall later become
               due  and payable, the moneys  shall be applied in accordance
               with the provisions of clause (a) of this Section 9.10.

               Section 9.11.  Severability  of Remedies.  It is the purpose
          and intention of this  Article IX to provide rights  and remedies
          to the Trustee and the Owners which may be lawfully granted under
          the provisions of the Act, but should any  right or remedy herein
          granted be held to be unlawful, the Trustee and the  Owners shall
          be  entitled, as above set forth, to every other right and remedy
          provided in this Indenture and by law.


                                      ARTICLE X

                TRUSTEE; PAYING AGENT AND CO-PAYING AGENTS; REGISTRAR

               Section 10.01. Acceptance  of Trusts.    The Trustee  hereby
          accepts and agrees to execute the trusts hereby created, but only
          upon the additional terms set forth in this Article X,  to all of
          which the Pollution Control Corporation agrees and the respective
          Owners agree by their acceptance of delivery of any of the Bonds.

               Section 10.02. No   Responsibility   for   Recitals.     The
          recitals,  statements  and  representations  contained   in  this
          Indenture or in the Bonds, save only the Trustee's authentication
          upon the Bonds, are not made by the Trustee, and the Trustee does
          not  assume, and shall not have, any responsibility or obligation
          for  the  correctness  of any  thereof.    The  Trustee makes  no
          representation  as  to  the   validity  or  sufficiency  of  this
          Indenture or the Bonds.

               Section 10.03. Limitations  on Liability.   The  Trustee may
          execute any of the trusts or powers hereof and perform the duties
          required  of  it  hereunder  by  or  through  attorneys,  agents,
          receivers,  or employees,  and  shall be  entitled  to advice  of
          counsel concerning all  matters of trust and its  duty hereunder,
          and  the Trustee  shall  not be  answerable  for the  default  or
          misconduct  of any  such attorney,  agent, receiver,  or employee
          selected  by it with  reasonable care.  The  Trustee shall not be
          answerable for the exercise of any discretion or power under this
          Indenture or for anything whatsoever in connection with the trust
          created hereby, except only for its own negligence or bad faith.

               Anything  in this Indenture to the contrary notwithstanding,
          the Trustee shall in no  event be required to expend or  risk its
          own funds or  otherwise incur personal financial liability in the
          performance of any of its duties or in the exercise of any of its
          rights  or  powers,  if  there shall  be  reasonable  grounds for
          believing that the repayment of such funds or adequate  indemnity
          against such liability is not reasonably assured to it.

               Section 10.04. Compensation,  Expenses  and  Advances.   The
          Trustee, the  Paying  Agent  and  any Co-Paying  Agent,  and  the
          Registrar under  this Indenture  shall be entitled  to reasonable
          compensation for  their services rendered hereunder  (not limited
          by any provision of law regarding the compensation of the trustee
          of  an  express  trust)  and to  reimbursement  for  their actual
          out-of-pocket  expenses  (including   counsel  fees)   reasonably
          incurred in  connection therewith  except as  a  result of  their
          negligence  or   bad   faith,  including,   without   limitation,
          compensation for any services rendered, and reimbursement for any
          expenses  incurred, at and subsequent  to the time  the Bonds are
          deemed  to have been paid in accordance with Article VIII hereof.
          If the Pollution Control Corporation shall fail to perform any of
          the covenants  or agreements  contained in this  Indenture, other
          than the covenants or agreements in respect of the payment of the
          principal of and premium, if any, and interest on the Bonds,  the
          Trustee may, in its uncontrolled discretion and without notice to
          the  Owners of the Bonds, at any time and from time to time, make
          advances  to  effect performance  of the  same  on behalf  of the
          Pollution Control Corporation, but the Trustee shall be  under no
          obligation so  to do;  and  any and  all such  advances may  bear
          interest at a rate per annum not exceeding the base  rate then in
          effect for 90-day commercial loans by the Trustee or a commercial
          banking  affiliate  of  the  Trustee designated  as  such  by the
          Trustee in the city  in which is located the Principal  Office of
          the Trustee (or such affiliate, as the case may  be) to borrowers
          of the highest credit standing; but no such advance shall operate
          to  relieve the  Pollution Control  Corporation from  any default
          hereunder.   In Section 5.03  of the Loan  Agreement, the Company
          has  agreed  that  it will  pay  to  the  Trustee (including  any
          predecessor Trustee),  the Paying  Agent and any  Co-Paying Agent
          and  the  Registrar,  such   compensation  and  reimbursement  of
          expenses  and advances, but  the Company may,  without creating a
          default hereunder,  contest in  good faith the  reasonableness of
          any such services, expenses  and advances.  If the  Company shall
          have failed to make any payment to the Trustee or any predecessor
          Trustee under Section 5.03 of the Loan Agreement and such failure
          shall  have  resulted  in an  Event  of  Default  under the  Loan
          Agreement, the Trustee, and  any predecessor Trustee, shall have,
          in addition to any  other rights hereunder, a claim, prior to the
          claim of the Owners, for the  payment of its compensation and the
          reimbursement of its  expenses and  any advances made  by it,  as
          provided in  this Section 10.04, upon the  moneys and obligations
          in the Bond Fund; provided, however, that neither the Trustee nor
          any  predecessor Trustee shall have any such claim upon moneys or
          obligations  deposited  with  or  paid  to the  Trustee  for  the
          redemption or payment of Bonds which are deemed to have been paid
          in accordance with Article VIII hereof.

               In  Section 5.04  of  the Loan  Agreement,  the Company  has
          agreed  to indemnify the  Trustee and any  predecessor Trustee to
          the extent provided therein.

               Section 10.05. Notice of  Events of  Default.   The  Trustee
          shall  not be  required  to take  notice,  or be  deemed  to have
          notice, of any default  or Event of Default under  this Indenture
          other  than an Event  of Default under  clause (a) or  (b) of the
          first  paragraph  of  Section  9.01  hereof,  unless  an  officer
          assigned  by  the  Trustee  to  administer  its  corporate  trust
          business  has  been  specifically  notified in  writing  of  such
          default  or  Event  of  Default by  Owners  of  at  least 33%  in
          principal amount of the Bonds then Outstanding.  The Trustee may,
          however, at any time, in its discretion, require of the Pollution
          Control Corporation  and the Company full  information and advice
          as to the  performance of  any of the  covenants, conditions  and
          agreements contained herein.

               Section 10.06. Action  by  Trustee.   The  Trustee shall  be
          under no obligation to take any action  in respect of any default
          or  Event  of  Default  hereunder  or  toward  the  execution  or
          enforcement of any of the trusts hereby created, or to institute,
          appear  in or defend any  suit or other  proceeding in connection
          therewith, unless requested  in writing so to do by  Owners of at
          least   a  majority  in  principal  amount   of  the  Bonds  then
          Outstanding,  and,  if in  its opinion  such  action may  tend to
          involve  it in expense or  liability, unless furnished, from time
          to time as often as it  may require, with security and  indemnity
          satisfactory to  it. The  foregoing provisions are  intended only
          for  the  protection of  the Trustee,  and  shall not  affect any
          discretion  or power given by any provisions of this Indenture to
          the Trustee  to take action in respect of any default or Event of
          Default without such  notice or  request from the  Owners of  the
          Bonds, or without such security or indemnity.

               Section 10.07. Good Faith  Reliance.  The  Trustee shall  be
          protected and shall incur no liability in acting or proceeding in
          good  faith  upon   any  resolution,  notice,   telegram,  telex,
          facsimile  transmission,  request, consent,  waiver, certificate,
          statement, affidavit, voucher, bond,  requisition or other  paper
          or document which  it shall in good  faith believe to be  genuine
          and to  have been passed or  signed by the proper  board, body or
          person or to have been prepared and furnished pursuant to any  of
          the provisions of this  Indenture or the Loan Agreement,  or upon
          the  written opinion  of  any attorney,  engineer, accountant  or
          other  expert believed by the Trustee to be qualified in relation
          to the  subject matter, and the Trustee shall be under no duty to
          make any investigation or inquiry as to any statements  contained
          or matters referred to in any such instrument, but may accept and
          rely  upon the  same  as conclusive  evidence  of the  truth  and
          accuracy of such  statements.   Neither the  Trustee, the  Paying
          Agent,  any Co-Paying Agent nor  the Registrar shall  be bound to
          recognize any person as an Owner of a  Bond or to take any action
          at  his request unless  the ownership of  such Bond is  proved as
          contemplated in Section 11.01 hereof.

               Section 10.08. Dealings  in Bonds  and  with  the  Pollution
          Control  Corporation and  the Company.   The Trustee,  the Paying
          Agent, any Co-Paying Agent or the Registrar, in its individual or
          any  other capacity, may in  good faith buy,  sell, own, hold and
          deal in  any of the Bonds  issued hereunder, and may  join in any
          action  which any Owner  of a Bond  may be entitled  to take with
          like effect as if it did not  act in any capacity hereunder.  The
          Trustee, the Paying Agent, any  Co-Paying Agent or the Registrar,
          in its individual or  any other capacity, either as  principal or
          agent, may  also engage in or  be interested in  any financial or
          other transaction  with the Pollution Control  Corporation or the
          Company, and may  act as  depositary, trustee, or  agent for  any
          committee  or body  of Owners  of Bonds  secured hereby  or other
          obligations of the Pollution Control Corporation as freely  as if
          it did not act in any capacity hereunder.

               Section 10.09. Allowance  of Interest.  The Trustee may, but
          shall not be  obligated to,  allow and credit  interest upon  any
          moneys  which  it may  at  any  time  receive under  any  of  the
          provisions  of  this  Indenture, at  such  rate,  if  any, as  it
          customarily allows upon  similar funds of similar  size and under
          similar  conditions.   All  interest allowed  on any  such moneys
          shall  be  credited as  provided in  Article  IV with  respect to
          interest on investments.

               Section 10.10. Construction of  Indenture.  The  Trustee may
          construe any of the  provisions of this Indenture insofar  as the
          same  may appear to be  ambiguous or inconsistent  with any other
          provision  hereof, and  any construction  of any  such provisions
          hereof  by the Trustee  in good faith  shall be binding  upon the
          Owners of the Bonds.

               Section 10.11. Resignation  of  Trustee.    The  Trustee may
          resign  and be discharged of the trusts created by this Indenture
          by executing  an instrument in  writing resigning such  trust and
          specifying the date when such resignation shall  take effect, and
          filing  the  same with  the  President of  the  Pollution Control
          Corporation and with the  Company, not less than forty-five  (45)
          days  before the  date  specified in  such  instrument when  such
          resignation  shall  take effect,  and  by giving  notice  of such
          resignation by Mail  to all  Owners of Bonds.   Such  resignation
          shall take  effect on the later to occur of (i) the day specified
          in  such instrument  and  notice, unless  previously a  successor
          Trustee  shall have  been appointed  as hereinafter  provided, in
          which event  such resignation shall take  effect immediately upon
          the  appointment   of  such   successor  Trustee  and   (ii)  the
          appointment of a successor Trustee.

               So long  as no event which  is, or after notice  or lapse of
          time,  or  both, would  become, an  Event  of Default  shall have
          occurred and be continuing,  if the Pollution Control Corporation
          shall have delivered  to the Trustee (i) an instrument appointing
          a successor Trustee, effective as of a date specified therein and
          (ii) an  instrument of acceptance of  such appointment, effective
          as of such  date, by  such successor Trustee  in accordance  with
          Section  10.16, the Trustee shall  be deemed to  have resigned as
          contemplated  in this  Section,  the successor  Trustee shall  be
          deemed  to  have been  appointed  pursuant to  subsection  (b) of
          Section 10.13 and such  appointment shall be deemed to  have been
          accepted as contemplated in  Section 10.16, all as of  such date,
          and all other provisions of this Article X shall be applicable to
          such resignation, appointment and acceptance except to the extent
          inconsistent  with   this  paragraph.    The   Pollution  Control
          Corporation shall  deliver any such instrument  of appointment at
          the direction of the Company.

               Section 10.12. Removal  of  Trustee.    The  Trustee may  be
          removed at any  time by filing  with the Trustee so  removed, and
          with  the  Pollution  Control  Corporation and  the  Company,  an
          instrument or instruments in  writing, appointing a successor, or
          an  instrument  or  instruments  in writing,  consenting  to  the
          appointment  by  the   Pollution  Control  Corporation  (at   the
          direction  of the Company) of  a successor and  accompanied by an
          instrument of  appointment by the  Pollution Control  Corporation
          (at  the direction of the Company) of  such successor, and in any
          event executed by Owners of not less than a majority in principal
          amount of the Bonds then  Outstanding, such filing to be made  by
          any Owner of a Bond or his duly authorized attorney.

               Section 10.13. Appointment  of Successor  Trustee.   (a)  In
          case at any  time the Trustee shall be removed,  or be dissolved,
          or if its property or affairs shall be taken under the control of
          any state  or federal  court or  administrative  body because  of
          insolvency or bankruptcy, or for any other reason, then a vacancy
          shall  forthwith  and ipso  facto exist  and  a successor  may be
          appointed, and in case at any time the Trustee shall resign or be
          deemed  to have resigned, then  a successor may  be appointed, by
          filing with the  Pollution Control Corporation and the Company an
          instrument in writing appointing  such successor Trustee executed
          by  Owners of  not less  than a majority  in principal  amount of
          Bonds  then  Outstanding.   Copies  of such  instrument  shall be
          promptly delivered  by the  Pollution Control Corporation  to the
          predecessor Trustee to the Trustee so appointed and the Company.

               (b)  Until  a successor Trustee  shall be  appointed by  the
          Owners of the  Bonds as herein authorized, the  Pollution Control
          Corporation, shall appoint a successor Trustee as directed by the
          Company.    After  any   appointment  by  the  Pollution  Control
          Corporation, it  shall  cause notice  of such  appointment to  be
          given  by  Mail to  all  Owners of  Bonds.   Any  new  Trustee so
          appointed by the Pollution  Control Corporation shall immediately
          and without further act  be superseded by a Trustee  appointed by
          the Owners of the Bonds in the manner above provided.

               (c)    No  resignation or  removal  of  the  Trustee and  no
          appointment of a successor Trustee pursuant to this Article shall
          become  effective  until the  acceptance  of  appointment by  the
          successor Trustee.

               Section 10.14. Qualifications of Successor  Trustee.   Every
          successor  Trustee  (a) shall  be a  bank  or trust  company duly
          organized under  the laws of  the United States  or any state  or
          territory thereof  authorized by law  to perform  all the  duties
          imposed upon  it by  this Indenture  and (b)  shall have  (or the
          parent holding company  of which shall  have) a combined  capital
          stock, surplus and undivided profits  of at least $100,000,000 if
          there can be located, with reasonable effort, such an institution
          willing  and able to accept the trust on reasonable and customary
          terms.

               Section 10.15. Judicial  Appointment  of Successor  Trustee.
          In case  at any time the Trustee  shall resign and no appointment
          of  a successor Trustee shall  be made pursuant  to the foregoing
          provisions of this Article X prior  to the date specified in  the
          notice of resignation  as the  date when such  resignation is  to
          take  effect, the retiring Trustee may forthwith apply to a court
          of  competent jurisdiction  for  the appointment  of a  successor
          Trustee.   If no appointment of a successor Trustee shall be made
          pursuant to the foregoing provisions of this Article X within six
          months  after  a vacancy  shall have  occurred  in the  office of
          Trustee, any Owner of a Bond  may apply to any court of competent
          jurisdiction  to appoint  a successor  Trustee.   Such  court may
          thereupon, after such notice,  if any, as it may  deem proper and
          prescribe, appoint a successor Trustee.

               Section 10.16. Acceptance  of  Trusts by  Successor Trustee.
          Any   successor  Trustee   appointed  hereunder   shall  execute,
          acknowledge and  deliver to the Pollution  Control Corporation an
          instrument  accepting such  appointment hereunder,  and thereupon
          such  successor  Trustee,  without   any  further  act,  deed  or
          conveyance,  shall  become  duly  vested with  all  the  estates,
          property, rights,  powers, trusts, duties and  obligations of its
          predecessor  in  the trust  hereunder,  with  like effect  as  if
          originally named Trustee herein.   Upon request of such  Trustee,
          such predecessor Trustee  and the  Pollution Control  Corporation
          shall  execute and  deliver  an instrument  transferring to  such
          successor Trustee  all the estates, property,  rights, powers and
          trusts hereunder of such predecessor Trustee  and, subject to the
          provisions  of Section  10.04  hereof, such  predecessor  Trustee
          shall  pay over  to the  successor Trustee  all moneys  and other
          assets at the time held by it hereunder.

               Section 10.17. Successor  by Merger  or Consolidation.   Any
          corporation or  association into which any  Trustee hereunder may
          be merged or converted  or with which it may  be consolidated, or
          any  corporation  or association  resulting  from  any merger  or
          consolidation  to which any Trustee hereunder shall be a party or
          any corporation or association  succeeding to the corporate trust
          business of  the Trustee,  shall be the  successor Trustee  under
          this Indenture, without the  execution or filing of any  paper or
          any further  act on the part  of the parties  hereto, anything in
          this Indenture to the contrary notwithstanding.

               If,  at the  time any  such successor  to the  Trustee shall
          succeed to the trusts created by this Indenture, any of the Bonds
          shall have  been authenticated but not  delivered, such successor
          Trustee  may  adopt  the  certificate of  authentication  of  any
          predecessor Trustee and deliver  such Bonds so authenticated; and
          if  at  that  time,  any  of  the   Bonds  shall  not  have  been
          authenticated, such successor Trustee may authenticate such Bonds
          either in the name  of any such  predecessor hereunder or in  the
          name  of such successor; and, in all such cases, such certificate
          of  authentication shall have the full force which it is anywhere
          in the Bonds or  in this Indenture provided that  the certificate
          of authentication  of the Trustee shall  have; provided, however,
          that  the right to adopt the certificate of authentication of any
          predecessor Trustee or to  authenticate Bonds in the name  of any
          predecessor  Trustee  shall  apply   only  to  its  successor  or
          successors by merger, conversion or consolidation.

               Section 10.18. Standard  of Care.  Notwithstanding any other
          provisions  of this  Article  X, the  Trustee  shall, during  the
          existence of an Event  of Default of which the Trustee has actual
          notice, exercise  such of the rights  and powers vested in  it by
          this Indenture and use the same degree of skill and care in their
          exercise  as a  prudent  man would  use  and exercise  under  the
          circumstances in the conduct of his own affairs.

               Section 10.19. Notice  to  Owners  of  Bonds  of  Event   of
          Default.   If an Event of Default  occurs of which the Trustee by
          Section 10.05 hereof  is required  to take notice  and deemed  to
          have notice, or any  other Event of  Default occurs of which  the
          Trustee has been specifically notified in accordance with Section
          10.05 hereof, and any such Event of Default shall continue for at
          least  two days after the Trustee acquires actual notice thereof,
          unless  the  Trustee shall  have  theretofore given  a  notice of
          acceleration pursuant  to Section 9.01 hereof,  the Trustee shall
          give Notice by Mail to all Owners of Outstanding Bonds.

               Section 10.20. Intervention in Litigation  of the  Pollution
          Control Corporation.   In  any judicial  proceeding to  which the
          Pollution Control Corporation is a party and which in the opinion
          of the Trustee  and its counsel has a  substantial bearing on the
          interests  of the Owners of  Bonds, the Trustee  may intervene on
          behalf of  the Owners  of the  Bonds and  shall, upon receipt  of
          indemnity  satisfactory to it, do  so if requested  in writing by
          Owners  of at least  a majority in principal  amount of the Bonds
          then Outstanding if permitted by the court having jurisdiction in
          the premises.

               Section 10.21. Paying   Agent;   Co-Paying   Agents.     The
          Pollution  Control Corporation  shall, with  the approval  of the
          Company, appoint  the Paying Agent  for the Bonds and  may at any
          time or  from time  to time, with  the approval  of the  Company,
          appoint  one or more Co-Paying  Agents for the  Bonds, subject to
          the conditions set  forth in  Section 10.22 hereof.   The  Paying
          Agent and each Co-Paying Agent shall designate to the Trustee its
          Principal  Office and  signify its  acceptance of the  duties and
          obligations imposed upon it hereunder  by a written instrument of
          acceptance delivered to the Pollution Control Corporation and the
          Trustee in which such Paying Agent or Co-Paying Agent will agree,
          particularly:

                    (a) to hold all sums held  by it for the payment of the
               principal  of and premium, if  any, or interest  on Bonds in
               trust for  the benefit of the Owners of the Bonds until such
               sums shall be paid  to such Owners or otherwise  disposed of
               as herein provided;

                    (b)  to  keep  such  books  and  records  as  shall  be
               consistent  with prudent  industry  practice, to  make  such
               books and records available  for inspection by the Pollution
               Control  Corporation, the  Trustee  and the  Company at  all
               reasonable times and, in  the case of a Co-Paying  Agent, to
               promptly  furnish copies  of such books  and records  to the
               Paying Agent; and

                    (c)  in the case of a Co-Paying Agent, upon the request
               of  the Paying  Agent,  to forthwith  deliver to  the Paying
               Agent all sums so held in trust by such Co-Paying Agent.

               The Pollution  Control Corporation shall cooperate  with the
          Trustee and the Company to cause the necessary arrangements to be
          made and to  be thereafter continued  whereby funds derived  from
          the  sources specified in Sections  4.03 and 4.04  hereof will be
          made available to the  Paying Agent and each Co-Paying  Agent for
          the payment  when due of the  principal of, premium,  if any, and
          interest on the Bonds.

               Section 10.22. Qualifications of Paying Agent  and Co-Paying
          Agents; Resignation; Removal.  The Paying Agent and any Co-Paying
          Agent shall be a corporation or association  duly organized under
          the  laws  of  the  United  States of  America  or  any  state or
          territory thereof,  having a combined capital  stock, surplus and
          undivided profits of  at least $15,000,000 and  authorized by law
          to perform all the duties imposed upon it by this Indenture.  The
          Paying Agent and  any Co-Paying Agent may at  any time resign and
          be discharged  of  the duties  and  obligations created  by  this
          Indenture  by  giving at  least sixty  (60)  days' notice  to the
          Pollution Control Corporation, the Company  and the Trustee.  The
          Paying Agent and any Co-Paying Agent may be  removed at any time,
          at the direction of the Company, by an instrument, signed  by the
          Pollution  Control Corporation,  filed with  the Paying  Agent or
          such Co-Paying Agent, as the case may be, and with the Trustee.

               In the event  of the  resignation or removal  of the  Paying
          Agent  or any Co-Paying Agent, the Paying Agent or such Co-Paying
          Agent, as the case may be, shall pay over, assign and deliver any
          moneys held by it in such  capacity to its successor or, if there
          be no successor, to the Trustee.

               In the  event that  the Pollution Control  Corporation shall
          fail to appoint  a Paying Agent  hereunder, or in the  event that
          the  Paying Agent shall resign or be removed, or be dissolved, or
          if the  property or  affairs of the  Paying Agent shall  be taken
          under the control of any state or federal court or administrative
          body because  of  bankruptcy  or insolvency,  or  for  any  other
          reason,  and the  Pollution  Control Corporation  shall not  have
          appointed its successor as Paying  Agent, the Trustee shall  ipso
          facto  be deemed to be the Paying  Agent for all purposes of this
          Indenture  until  the   appointment  by  the  Pollution   Control
          Corporation of the Paying Agent or successor Paying Agent, as the
          case may be.

               Upon  the  appointment  of  a successor  Paying  Agent,  the
          Trustee shall give notice thereof by Mail to all Owners of Bonds.

               Section 10.23. Registrar.  The Pollution Control Corporation
          shall, with  the approval of  the Company, appoint  the Registrar
          for the Bonds,  subject to  the conditions set  forth in  Section
          10.24 hereof.  The  Registrar shall designate to the  Trustee its
          Principal Office and signify its acceptance of the duties imposed
          upon it hereunder by a written instrument of acceptance delivered
          to the  Pollution Control  Corporation and  the Trustee in  which
          such Registrar will  agree, particularly, to keep  such books and
          records as shall be consistent with prudent industry practice and
          to  make such books and  records available for  inspection by the
          Pollution Control Corporation, the Trustee and the Company at all
          reasonable times.

               The  Pollution Control Corporation  shall cooperate with the
          Trustee and the Company to cause the necessary arrangements to be
          made and to  be thereafter continued  whereby Bonds, executed  by
          the  Pollution  Control  Corporation  and  authenticated  by  the
          Trustee, shall  be made available for  exchange, registration and
          registration  of   transfer  at  the  Principal   Office  of  the
          Registrar.   The  Pollution Control  Corporation  shall cooperate
          with  the Trustee,  the Registrar  and the  Company to  cause the
          necessary  arrangements  to  be  made  and  thereafter  continued
          whereby  the  Paying  Agent  and  any  Co-Paying  Agent shall  be
          furnished such records  and other information, at such  times, as
          shall be required to  enable the Paying Agent and  such Co-Paying
          Agent to  perform the  duties and  obligations imposed  upon them
          hereunder.

               Section 10.24. Qualifications  of   Registrar;  Resignation;
          Removal.   The Registrar  shall be  a corporation  or association
          duly organized under the laws of  the United States of America or
          any state or territory thereof, having a combined  capital stock,
          surplus  and  undivided  profits  of  at  least  $15,000,000  and
          authorized by law to  perform all the  duties imposed upon it  by
          this Indenture.   The  Registrar may  at any time  resign and  be
          discharged  of  the  duties   and  obligations  created  by  this
          Indenture  by  giving at  least sixty  (60)  days' notice  to the
          Pollution Control  Corporation, the Trustee and the Company.  The
          Registrar may be  removed at any  time, at the  direction of  the
          Company,  by  an  instrument  signed  by  the  Pollution  Control
          Corporation filed with the Registrar and the Trustee.

               In the event of the resignation or removal of the Registrar,
          the Registrar shall deliver any Bonds held by it in such capacity
          to its successor or, if there be no successor, to the Trustee.

               In the  event that  the Pollution Control  Corporation shall
          fail to appoint  a Registrar hereunder, or in the  event that the
          Registrar shall resign or be removed, or be  dissolved, or if the
          property or affairs  of the  Registrar shall be  taken under  the
          control  of any  state or  federal  court or  administrative body
          because of bankruptcy or insolvency, or for any other reason, and
          the Pollution  Control Corporation  shall not have  appointed its
          successor as Registrar, the Trustee shall ipso facto be deemed to
          be the Registrar  for all  purposes of this  Indenture until  the
          appointment by the Pollution Control Corporation of the Registrar
          or successor Registrar, as the case may be.

               Upon the  appointment of a successor  Registrar, the Trustee
          shall give notice thereof by Mail to all Owners of Bonds.

               Section 10.25. Several Capacities.   Anything herein  to the
          contrary notwithstanding, the same  entity may serve hereunder as
          the  Trustee, the  Paying  Agent or  a  Co-Paying Agent  and  the
          Registrar and in any combination of such capacities to the extent
          permitted by law.


                                      ARTICLE XI

                   EXECUTION OF INSTRUMENTS BY OWNERS OF BONDS AND
                             PROOF OF OWNERSHIP OF BONDS

               Section 11.01. Execution of Instruments; Proof of Ownership.
          Any request,  direction, consent or other  instrument in writing,
          whether  or not  required or  permitted by  this Indenture  to be
          signed or executed  by Owners of the Bonds, may  be in any number
          of concurrent instruments of  similar tenor and may be  signed or
          executed by  Owners of the Bonds  or by an agent  appointed by an
          instrument  in writing.    Proof of  the  execution of  any  such
          instrument  and of the ownership of Bonds shall be sufficient for
          any purpose of this Indenture and shall be conclusive in favor of
          the  Trustee with  regard to  any action taken  by it  under such
          instrument if made in the following manner:

                    (a) The fact and date of the execution by any person of
               any  such instrument may be proved by the certificate of any
               officer in any  jurisdiction who, by  the laws thereof,  has
               power  to take acknowledgments  within such jurisdiction, to
               the  effect   that  the   person  signing   such  instrument
               acknowledged  before him  the  execution thereof,  or by  an
               affidavit of a witness to such execution.

                    (b) The ownership or former ownership of Bonds shall be
               proved by  the registration books kept  under the provisions
               of Section 2.08 hereof.

               Nothing contained in  this Article XI shall  be construed as
          limiting  the Trustee to such  proof, it being  intended that the
          Trustee may accept  any other evidence  of matters herein  stated
          which it  may deem  sufficient.   Any request  or consent of  any
          Owner of a Bond shall bind every future Owner of the same Bond or
          any Bond or Bonds issued  in lieu thereof in respect of  anything
          done  by the  Trustee  or the  Pollution  Control Corporation  in
          pursuance of such request or consent.


                                     ARTICLE XII

                MODIFICATION OF THIS INDENTURE AND THE LOAN AGREEMENT

               Section 12.01. Limitations.  Neither this Indenture  nor the
          Loan  Agreement  shall  be modified  or  amended  in any  respect
          subsequent to  the  original  issuance  of the  Bonds  except  as
          provided  in and in accordance with and subject to the provisions
          of this Article XII and Section 7.04 hereof.

               The Trustee may, but  shall not be obligated to,  enter into
          any  Supplemental  Indenture  which  affects  the  Trustee's  own
          rights, duties or immunities under this Indenture or otherwise.

               Section 12.02. Supplemental    Indentures    without   Owner
          Consent.  The Pollution Control Corporation and the  Trustee may,
          from time  to time and  at any  time, without the  consent of  or
          notice to  the  Owners  of the  Bonds,  enter  into  Supplemental
          Indentures as follows:

                    (a) to cure any formal  defect, omission, inconsistency
               or ambiguity in this Indenture, provided, however, that such
               cure shall not materially and adversely affect the interests
               of the Owners of the Bonds;

                    (b)  to grant to or  confer or impose  upon the Trustee
               for  the benefit of the  Owners of the  Bonds any additional
               rights, remedies, powers,  authority, security,  liabilities
               or  duties  which  may  lawfully be  granted,  conferred  or
               imposed;

                    (c)  to add  to the  covenants and  agreements of,  and
               limitations  and  restrictions upon,  the  Pollution Control
               Corporation in  this Indenture other  covenants, agreements,
               limitations and restrictions to be observed by the Pollution
               Control Corporation;

                    (d) to confirm, as further assurance, any pledge under,
               and the subjection to  any claim, lien or pledge  created or
               to  be  created  by, this  Indenture,  of  the  Receipts and
               Revenues of the Pollution  Control Corporation from the Loan
               Agreement or of any other moneys, securities or funds;

                    (e)   to   authorize   a   different   denomination  or
               denominations  of   the  Bonds   and  to   make  correlative
               amendments  and modifications  to  this Indenture  regarding
               exchange  ability  of  Bonds  of   different  denominations,
               redemptions of portions of Bonds of particular denominations
               and  similar  amendments and  modifications  of  a technical
               nature;

                    (f)  to   modify,  alter,  supplement  or   amend  this
               Indenture in  such manner as shall  permit the qualification
               hereof under the Trust  Indenture Act of 1939, as  from time
               to time amended;

                    (g)  to   modify,  alter,  supplement  or   amend  this
               Indenture in such manner as shall be necessary, desirable or
               appropriate  in  order  to  provide  for  or  eliminate  the
               registration and  registration  of  transfer  of  the  Bonds
               through  a book-entry or similar method,  whether or not the
               Bonds are evidenced by certificates;

                    (h)  to   modify,  alter,  amend  or   supplement  this
               Indenture  in  any other  respect  which  is not  materially
               adverse  to the Owners and  which does not  involve a change
               described in  clause (i),  (ii), (iii)  or  (iv) of  Section
               12.03(a) hereof; and

                    (i) to provide any additional procedures,  covenants or
               agreements necessary or desirable to maintain the tax-exempt
               status of interest on the Bonds.

               Before the  Pollution Control  Corporation  and the  Trustee
          shall  enter into  any  Supplemental Indenture  pursuant to  this
          Section  12.02, there shall have been delivered to the Trustee an
          opinion of Bond Counsel  stating that such Supplemental Indenture
          is  authorized  or  permitted  by  this Indenture  and  the  Act,
          complies with  their respective  terms, will, upon  the execution
          and delivery  thereof, be  valid and binding  upon the  Pollution
          Control Corporation in accordance with its terms and will not, in
          and of itself,  adversely affect the exclusion  from gross income
          for federal tax purposes of the interest on the Bonds.

               Section 12.03. Supplemental   Indentures  with   Consent  of
          Owners.  (a)  Except for any Supplemental  Indenture entered into
          pursuant  to  Section  12.02 hereof,  subject  to  the terms  and
          provisions contained in this Section 12.03 and Section  12.05 and
          not  otherwise, Owners of not  less than a  majority in aggregate
          principal amount  of the  Bonds then  Outstanding which would  be
          adversely affected thereby shall have the right from time to time
          to  consent  to and  approve the  execution  and delivery  by the
          Pollution Control Corporation and the Trustee of any Supplemental
          Indenture deemed necessary or  desirable by the Pollution Control
          Corporation  for the  purposes of modifying,  altering, amending,
          supplementing or rescinding, in any particular,  any of the terms
          or  provisions contained  in this  Indenture;  provided, however,
          that, unless approved  in writing by the Owners of  all the Bonds
          then  Outstanding  which  would be  adversely  affected  thereby,
          nothing  herein  contained  shall  permit,  or  be  construed  as
          permitting, (i) a  change in  the times, amounts  or currency  of
          payment of  the principal of or  premium, if any,  or interest on
          any Outstanding  Bond, a  reduction in  the  principal amount  or
          redemption price of any Outstanding Bond  or a change in the rate
          of interest thereon, or any impairment of the  right of any Owner
          to institute  suit for the  payment of any  Bond owned by  it, or
          (ii) the creation  of a claim or  lien upon, or a  pledge of, the
          Receipts and  Revenues of the Pollution  Control Corporation from
          the  Loan Agreement  ranking prior  to or  on a  parity with  the
          claim,  lien  or  pledge  created by  this  Indenture  (except as
          referred  to in Section 10.04  hereof), or (iii)  a preference or
          priority of  any Bond or Bonds  over any other Bond  or Bonds, or
          (iv) a reduction in  the aggregate principal amount of  Bonds the
          consent  of  the  Owners  of  which  is  required  for  any  such
          Supplemental Indenture or which  is required, under Section 12.07
          hereof, for any modification, alteration, amendment or supplement
          to the Loan Agreement.

               (b) If at any time  the Pollution Control Corporation  shall
          request the Trustee to enter into any Supplemental Indenture  for
          any  of the  purposes of  this Section  12.03, the  Trustee shall
          cause notice of  the proposed Supplemental Indenture  to be given
          by Mail  to all Owners of  Outstanding Bonds.   Such notice shall
          briefly  set  forth  the  nature  of  the  proposed  Supplemental
          Indenture and shall state that  a copy thereof is on file  at the
          Principal Office of the  Trustee for inspection by all  Owners of
          Bonds.

               (c) Within two  years after the date of the first mailing of
          such notice,  the Pollution  Control Corporation and  the Trustee
          may enter  into such Supplemental Indenture  in substantially the
          form described in such notice only if there shall have first been
          delivered  to the Trustee (i) the  required consents, in writing,
          of Owners  of Bonds and (ii)  an opinion of  Bond Counsel stating
          that such  Supplemental Indenture  is authorized or  permitted by
          this Indenture and the Act,  complies with their respective terms
          and, upon the execution  and delivery thereof, will be  valid and
          binding upon the Pollution Control Corporation in accordance with
          its  terms and will not,  in and of  itself, adversely affect the
          exclusion  from gross  income  for federal  tax  purposes of  the
          interest on the Bonds.

               (d)  If  Owners of  not less  than  the percentage  of Bonds
          required by  this  Section  12.03 shall  have  consented  to  and
          approved the  execution and delivery thereof  as herein provided,
          no Owner  shall have  any right  to object  to the execution  and
          delivery of such Supplemental  Indenture, or to object to  any of
          the  terms  and provisions  contained  therein  or the  operation
          thereof,  or in  any  manner to  question  the propriety  of  the
          execution  and  delivery thereof,  or to  enjoin or  restrain the
          Pollution Control  Corporation or the Trustee  from executing and
          delivering the same  or from  taking any action  pursuant to  the
          provisions thereof.

               Section 12.04. Effect  of Supplemental Indenture.   Upon the
          execution and delivery of  any Supplemental Indenture pursuant to
          the  provisions of this Article XII, this Indenture shall be, and
          be deemed  to be, modified,  altered, amended or  supplemented in
          accordance  therewith,  and  the  respective  rights, duties  and
          obligations  under  this  Indenture   of  the  Pollution  Control
          Corporation, the Trustee and Owners of all Bonds then Outstanding
          shall thereafter be determined, exercised and enforced under this
          Indenture  subject  in   all  respects  to   such  modifications,
          alterations, amendments and supplements.

               Section 12.05. Consent of  the Company.  Anything  herein to
          the  contrary notwithstanding,  any Supplemental  Indenture under
          this Article XII which affects  any rights, powers, agreements or
          obligations of the Company under the  Loan Agreement, or requires
          a  revision of  the  Loan Agreement,  shall not  become effective
          unless and  until  the  Company  shall  have  consented  to  such
          Supplemental Indenture.

               Section 12.06. Amendment of Loan  Agreement without  Consent
          of Owners.  Without the consent of or notice to the Owners of the
          Bonds,  the  Pollution Control  Corporation  may  enter into  any
          Supplemental Loan Agreement, and the Trustee may consent thereto,
          as may  be required (a) by  the provisions of  the Loan Agreement
          and  this Indenture,  (b) for  the purpose  of curing  any formal
          defect,  omission, inconsistency  or  ambiguity  therein, (c)  to
          provide   any  additional  procedures,  covenants  or  agreements
          necessary  or  desirable to  maintain  the  tax-exempt status  of
          interest on the Bonds, or (d) in connection with any other change
          therein  which is  not materially  adverse to  the Owners  of the
          Bonds.  A revision of Exhibit A to the Loan Agreement pursuant to
          Section  3.03 thereof  shall not  be deemed  a Supplemental  Loan
          Agreement for purposes of this Indenture.

               Before the  Pollution Control Corporation shall  enter into,
          and the Trustee shall consent to, any Supplemental Loan Agreement
          pursuant to this  Section 12.06, there shall  have been delivered
          to  the  Trustee an  opinion of  Bond  Counsel stating  that such
          Supplemental Loan  Agreement is  authorized or permitted  by this
          Indenture  and the  Act,  complies with  their respective  terms,
          will,  upon the  execution  and delivery  thereof,  be valid  and
          binding upon the Pollution Control Corporation and the Company in
          accordance  with  its  terms and  will  not,  in  and of  itself,
          adversely  affect the exclusion from gross income for federal tax
          purposes of interest on the Bonds.

               Section 12.07. Amendment  of Loan Agreement  with Consent of
          Owners.    Except in  the  case of  Supplemental  Loan Agreements
          referred  to  in  Section  12.06 hereof,  the  Pollution  Control
          Corporation  shall not  enter  into, and  the  Trustee shall  not
          consent to,  any Supplemental Loan Agreement  without the written
          approval or consent of the Owners  of not less than a majority in
          aggregate principal  amount of  the Bonds then  Outstanding which
          would  be  adversely  affected  thereby, given  and  procured  as
          provided in Section 12.03 hereof; provided, however, that, unless
          approved in writing by  the Owners of all Bonds  then Outstanding
          which   would  be  adversely  affected  thereby,  nothing  herein
          contained shall permit, or  be construed as permitting, a  change
          in the obligations of the Company  under Section 5.01 of the Loan
          Agreement.  If at  any time the Pollution Control  Corporation or
          the Company shall request the consent of the Trustee to  any such
          proposed  Supplemental Loan  Agreement,  the Trustee  shall cause
          notice  of such proposed Supplemental  Loan Agreement to be given
          in  the  same manner  as provided  by  Section 12.03  hereof with
          respect to  Supplemental Indentures.   Such notice  shall briefly
          set forth the nature of such proposed Supplemental Loan Agreement
          and  shall state that copies of the instrument embodying the same
          are on file at the Principal Office of the Trustee for inspection
          by  all Owners of the  Bonds.  The  Pollution Control Corporation
          may enter into, and the Trustee may consent to, any such proposed
          Supplemental Loan  Agreement subject to the  same conditions, and
          with  the same effect, as  provided by Section  12.03 hereof with
          respect to Supplemental Indentures.


                                     ARTICLE XIII

                                    MISCELLANEOUS

               Section 13.01. Successors    of   the    Pollution   Control
          Corporation.   In the event  of the dissolution  of the Pollution
          Control  Corporation, all  the covenants,  stipulations, promises
          and agreements in this  Indenture contained, by or on  behalf of,
          or for  the benefit of, the Pollution  Control Corporation, shall
          bind or inure  to the benefit of the successors  of the Pollution
          Control Corporation  from time to  time and any  entity, officer,
          board, commission, agency or instrumentality to  whom or to which
          any power or duty  of the Pollution Control Corporation  shall be
          transferred.

               Section 13.02. Parties  in  Interest.     Except  as  herein
          otherwise  specifically  provided,  nothing  in   this  Indenture
          expressed  or implied is intended or shall be construed to confer
          upon  any person,  firm or  corporation other than  the Pollution
          Control  Corporation,  the  Company  and the  Trustee  and  their
          successors and assigns  and the  Owners of the  Bonds any  right,
          remedy  or claim  under  or by  reason  of this  Indenture,  this
          Indenture being intended to be for the sole and exclusive benefit
          of the Pollution Control Corporation, the Company and the Trustee
          and their successors and assigns and the Owners of the Bonds.

               Section 13.03. Severability.  In case any one or more of the
          provisions of this Indenture or  of the Loan Agreement or of  the
          Bonds shall, for  any reason, be  held to be illegal  or invalid,
          such  illegality  or  invalidity   shall  not  affect  any  other
          provisions of this  Indenture or of the Loan Agreement or of such
          Bonds, and this Indenture  and the Loan Agreement and  such Bonds
          shall be construed  and enforced  as if such  illegal or  invalid
          provisions had not been contained herein or therein.

               Section 13.04. No  Personal  Liability of  Pollution Control
          Corporation Officials.  No covenant or agreement contained in the
          Bonds or  in this Indenture shall be deemed to be the covenant or
          agreement of any director,  official, officer, agent, or employee
          of the Pollution Control  Corporation in his individual capacity,
          and  neither the  members  of  the  Board  of  Directors  of  the
          Pollution  Control Corporation  nor  any  official executing  the
          Bonds shall  be liable personally on  the Bonds or be  subject to
          any  personal  liability  or  accountability  by  reason  of  the
          issuance thereof.

               Section 13.05. Bonds   Owned   by   the  Pollution   Control
          Corporation or the Company.  In determining whether Owners of the
          requisite aggregate principal amount  of the Bonds have concurred
          in  any direction, consent or  waiver under this Indenture, Bonds
          which  are owned  by  the Pollution  Control  Corporation or  the
          Company  or by any  person directly or  indirectly controlling or
          controlled by or under direct or indirect common control with the
          Company (unless the Pollution Control Corporation, the Company or
          such person owns all Bonds which are then Outstanding, determined
          without regard to  this Section 13.05)  shall be disregarded  and
          deemed  not to  be  Outstanding  for  the  purpose  of  any  such
          determination,  except  that,  for  the  purpose  of  determining
          whether the Trustee  shall be  protected in relying  on any  such
          direction, consent or waiver, only  Bonds which the Trustee knows
          are so  owned shall be so  disregarded.  Upon the  request of the
          Trustee, the Company and  the Pollution Control Corporation shall
          furnish to  the Trustee a  certificate identifying all  Bonds, if
          any, actually known  to either of them to be owned  or held by or
          for  the account of any  of the above-described  persons, and the
          Trustee  shall  be  entitled  to  rely  on  such  certificate  as
          conclusive evidence of the  facts set forth therein and  that all
          other   Bonds  are   Outstanding   for  the   purposes  of   such
          determination.   Bonds so owned  which have been  pledged in good
          faith may be regarded as  Outstanding if the pledgee  establishes
          to the satisfaction of the Trustee the pledgee's right so  to act
          with  respect to  such  Bonds and  that  the pledgee  is  not the
          Pollution  Control  Corporation  or  the Company  or  any  person
          directly  or indirectly  controlling  or controlled  by or  under
          direct or indirect common control with the  Company. In case of a
          dispute as to such right, any decision by the  Trustee taken upon
          the advice of counsel shall be full protection to the Trustee.

               Section 13.06. Counterparts.  This Indenture may be executed
          in  any number of counterparts,  each of which,  when so executed
          and delivered,  shall be an original; but such counterparts shall
          together constitute but one and the same Indenture.

               Section 13.07. Governing  Law.   The  laws of  the State  of
          Arizona  shall govern  the construction  and enforcement  of this
          Indenture and of all Bonds, except that the laws of  the State of
          New York  shall govern  the construction  and enforcement  of the
          rights and duties of the  Trustee hereunder and the  construction
          of  Section 13.09  hereof and  the computation  of any  period of
          grace provided herein.

               Section 13.08. Notices.    Except as  otherwise  provided in
          this Indenture, all  notices, certificates, requests requisitions
          or other communications by the Pollution Control Corporation, the
          Company, the Trustee,  the Paying Agent,  any Co-Paying Agent  or
          the  Registrar pursuant to this Indenture shall be in writing and
          shall be sufficiently given and shall be deemed given when mailed
          by registered mail, postage prepaid, addressed as follows: If  to
          the  Pollution Control  Corporation, c/o  Mangum, Wall,  Stoops &
          Warden,  222   East  Birch  Avenue,  Flagstaff,   Arizona  86001,
          Attention:  President;  if  to the  Company,  at  220 West  Sixth
          Street, Tucson,  Arizona 85702,  Attention: Treasurer; if  to the
          Trustee,  at  100 Wall  Street, Suite  1600,  New York,  New York
          10005, Attention:  Vice President;  if to  the Paying Agent,  any
          Co-Paying Agent  or the Registrar,  at the address  designated in
          the  acceptance  of  appointment  or  engagement.    Any  of  the
          foregoing may, by notice  given hereunder to each of  the others,
          designate any further or  different addresses to which subsequent
          notices, certificates, requests or other  communications shall be
          sent hereunder.

               Section 13.09. Holidays.  If the date for making any payment
          or the last date for performance of any act or  the exercising of
          any  right, as provided in  this Indenture, shall  be a Saturday,
          Sunday or  a public holiday in  the city in which  is located the
          Principal Office of  the Trustee, such payment may be made or act
          performed or right exercised on the next succeeding business day,
          with  the same force  and effect as  if done on  the nominal date
          provided  in this Indenture, and no interest shall accrue for the
          period after such nominal date.  If the last day of any period of
          grace, as provided in this Indenture, shall be a Saturday, Sunday
          or a public holiday in the city in which is located the Principal
          Office of the Trustee, the last day of such period of grace shall
          be deemed to be the next succeeding business day.

               Section 13.10. Statutory  Notice  Regarding Cancellation  of
          Contracts.   As  required by  the provisions  of Section  38-511,
          Arizona Revised Statutes, as amended, notice is hereby given that
          political  subdivisions of the State  of Arizona or  any of their
          departments  or  agencies may,  within  three  (3)  years of  its
          execution,  cancel  any  contract,  without  penalty  or  further
          obligation, made  by the political  subdivisions or any  of their
          departments  or agencies on or  after September 30,  1988, if any
          person   significantly   involved  in   initiating,  negotiating,
          securing, drafting  or creating  the contract  on  behalf of  the
          political subdivisions  or any  of their departments  or agencies
          is,  at any  time  while the  contract  or any  extension  of the
          contact is in effect, an employee  or agent of any other party to
          the contract in  any capacity or a consultant to  any other party
          of  the  contract  with respect  to  the  subject  matter of  the
          contract.

               The  Trustee  covenants  and  agrees  not  to  employ  as an
          employee,  agent or, with respect  to the subject  matter of this
          Indenture, a consultant, any person actually known by the Trustee
          to   be  significantly   involved  in   initiating,  negotiating,
          securing, drafting  or creating such  Indenture on behalf  of the
          Pollution  Control Corporation  within three  (3) years  from the
          execution hereof, unless  a waiver is  provided by the  Pollution
          Control Corporation.


   <PAGE> 


                IN  WITNESS WHEREOF,  Coconino  County,  Arizona  Pollution
          Control Corporation has caused  this Indenture to be executed  by
          its President and  First Trust of New  York, National Association
          has caused  this Indenture to  be executed  on its behalf  by its
          Vice President, all as of the day and year first above written.

                                             COCONINO COUNTY, ARIZONA
                                             POLLUTION CONTROL CORPORATION

          Attest:                       By: /s/ Bruce J. Nordstrom
					    ----------------------------
                                               President

   	    /s/ Terrence J. Rice
          ___________________________
          Secretary

                                                  FIRST TRUST OF NEW YORK,
                                                  NATIONAL ASSOCIATION



          Attest:                            By:  /s/ Patrick J. Crowley
						 -----------------------
                                                       Vice President
	  /s/ Steven Haas
         ____________________________
          Assistant Secretary


   <PAGE> 

                                                                  EXHIBIT A


                                    (FORM OF BOND)

          No.


                               COCONINO COUNTY, ARIZONA
                            POLLUTION CONTROL CORPORATION
                           POLLUTION CONTROL REVENUE BOND,
                                    1997 SERIES B
                    (TUCSON ELECTRIC POWER COMPANY NAVAJO PROJECT)

          INTEREST RATE (PER ANNUM):
          MATURITY DATE:                                         DATED:
          CUSIP:
          REGISTERED OWNER:
          PRINCIPAL AMOUNT:                                      DOLLARS


               Coconino  County, Arizona  Pollution Control  Corporation, a
          political  subdivision of  the State  of Arizona  (the "Pollution
          Control Corporation"), for value received, hereby promises to pay
          (but  only  out of  the Receipts  and  Revenues of  the Pollution
          Control  Corporation  from  the  Loan Agreement,  as  hereinafter
          defined,  and other  moneys pledged  therefor) to  the Registered
          Owner  identified above  or registered  assigns, on  the Maturity
          Date set forth above, upon the presentation and surrender hereof,
          the Principal Amount set forth above and to pay (but  only out of
          the Receipts  and Revenues  of the Pollution  Control Corporation
          from  the  Loan Agreement  and  other  moneys pledged  therefor),
          interest on said Principal Amount until payment of said Principal
          Amount has been  made or duly provided for, from the date hereof,
          at  the Interest Rate set forth above, semi-annually on the first
          days of April and October in each  year, commencing on October 1,
          1997.  Interest will be calculated on the basis of a 360-day year
          of twelve 30-day months.

               The  principal  of and  premium, if  any,  on this  Bond are
          payable  at  the principal  office of  First  Trust of  New York,
          National Association, as Paying Agent, or at the principal office
          of any co-paying agent appointed in accordance with the Indenture
          (as hereinafter defined), at the  option of the Registered  Owner
          hereof.  Interest on this Bond is payable by check drawn upon the
          Paying Agent and  mailed to the Registered Owner of  this Bond as
          of the  close of business on  the Record Date (as  defined in the
          Indenture) at  the registered  address of such  Registered Owner;
          notwithstanding the  foregoing, upon request to  the Paying Agent
          by  a Registered Owner of  not less than  $1,000,000 in aggregate
          principal  amount of  Bonds, interest  on such  Bonds  and, after
          presentation and  surrender of such Bonds,  the principal thereof
          shall  be paid to  such Registered Owner by  wire transfer to the
          account maintained within the continental United States specified
          by such Registered Owner  or, if such Registered Owner  maintains
          an account with  the entity  acting as Paying  Agent, by  deposit
          into such account.   Payment of the principal of  and premium, if
          any, and interest on, this Bond  shall be in any coin or currency
          of the  United States of  America as, at the  respective times of
          payment,  shall be  legal tender  for the  payment of  public and
          private debts.

               This Bond is  one of the  duly authorized Pollution  Control
          Revenue  Bonds,  1997  Series B (Tucson  Electric  Power  Company
          Navajo  Project)   (the  "Bonds")   of   the  Pollution   Control
          Corporation,  aggregating Fourteen Million Seven Hundred Thousand
          Dollars  ($14,700,000) in  principal  amount,  issued  under  and
          pursuant  to the Constitution and  laws of the  State of Arizona,
          particularly  Title 35, Chapter 6,  Arizona Revised  Statutes, as
          amended  (the "Act"),  and the  Indenture of  Trust, dated  as of
          April 1,  1997 (the  "Indenture"), between the  Pollution Control
          Corporation and First Trust of New York, National Association, as
          trustee  (the  "Trustee"), for  the  purpose  of refinancing,  by
          payment  or  redemption  of the  Pollution  Control Corporation's
          Pollution Control Refunding Revenue  Bonds, 1996 Series B (Tucson
          Electric Power Company Project), or provision therefor, a portion
          of the  costs of  the acquisition, construction,  improvement and
          equipping   of  certain   pollution   control   facilities   (the
          "Facilities") at  the Navajo  Generating  Station (the  "Plant").
          Pursuant to the  Loan Agreement, dated as  of April 1, 1997  (the
          "Loan Agreement"), between the  Pollution Control Corporation and
          Tucson  Electric  Power  Company,  a  corporation  organized  and
          existing  under the laws of the State of Arizona (the "Company"),
          the proceeds of the  Bonds, other than accrued interest,  if any,
          paid by the  initial purchasers  thereof, will be  loaned to  the
          Company.

               Neither the  County of  Coconino, Arizona  nor the  State of
          Arizona  shall in  any event  be liable  for the  payment of  the
          principal of or  premium, if any, or  interest on the Bonds,  and
          neither  the  Bonds, nor  the premium,  if  any, or  the interest
          thereon, shall be construed to  constitute an indebtedness of the
          County  of Coconino, Arizona or  the State of  Arizona within the
          meaning of any constitutional or statutory provisions whatsoever.
          The Bonds and  the premium, if any, and the  interest thereon are
          limited obligations of the Pollution Control Corporation  payable
          solely from  the Receipts and  Revenues of the  Pollution Control
          Corporation  from the  Loan  Agreement and  other moneys  pledged
          therefor under the Indenture.

               The Bonds  are equally  and ratably  secured, to  the extent
          provided  in  the  Indenture, by  the  pledge  thereunder of  the
          "Receipts and Revenues of  the Pollution Control Corporation from
          the Loan  Agreement", which term is used herein as defined in the
          Indenture and which as  therein defined means all moneys  paid or
          payable to the Trustee  for the account of the  Pollution Control
          Corporation by  the  Company in  respect  of the  loan  payments,
          including all receipts of the Trustee which, under the provisions
          of  the  Indenture,  reduce the  amounts  of  such  payments. The
          Pollution Control  Corporation has  also pledged and  assigned to
          the  Trustee as  security  for the  Bonds  all other  rights  and
          interests  of the  Pollution Control  Corporation under  the Loan
          Agreement  (other  than its  rights  to  indemnification and  its
          administrative expenses and certain other rights).

               The transfer  of  this Bond  shall  be registered  upon  the
          registration books kept at the principal office of First Trust of
          New  York, National  Association,  as Registrar,  at the  written
          request  of the  Registered  Owner hereof  or  his attorney  duly
          authorized  in  writing,  upon surrender  of  this  Bond at  said
          office,   together  with   a  written   instrument   of  transfer
          satisfactory  to the  Registrar duly  executed by  the Registered
          Owner or his duly authorized attorney.

               In the manner and with the effect provided in the Indenture,
          each of the Bonds may be redeemed prior to maturity, as follows:

                    (a) The  Bonds shall  be subject  to redemption  by the
               Pollution  Control  Corporation,  at  the  direction of  the
               Company, on any date on or after October 1, 2007 in whole at
               any time  or in part  from time to  time, at the  applicable
               redemption  price (expressed  as a  percentage of  principal
               amount)  set  forth  below,  plus accrued  interest  to  the
               redemption date:

                    Redemption Period                       Redemption
						             Price
                     -----------------                       ---------------
               October 1, 2007 through September 30, 2008             102%
               October 1, 2008 through September 30, 2009             101%
               October 1, 2009 and thereafter                         100%

                    (b)   The Bonds shall  be subject to  redemption by the
               Pollution  Control Corporation,  at  the  direction  of  the
               Company, in  whole  at  any  time at  the  principal  amount
               thereof plus accrued interest to the redemption date, if:

                         (i)  the Company  shall have  determined that  the
                    continued  operation  of  the  Plant  is impracticable,
                    uneconomical or undesirable for any reason;

                         (ii)  the Company shall  have determined  that the
                    continued operation of the Facilities is impracticable,
                    uneconomical or  undesirable due to  (A) the imposition
                    of taxes, other than  ad valorem taxes currently levied
                    upon privately owned property used for the same general
                    purpose  as  the Facilities,  or  other  liabilities or
                    burdens  with respect  to the  Facilities  or operation
                    thereof,  (B) changes  in technology,  in environmental
                    standards  or legal  requirements  or  in the  economic
                    availability of materials, supplies, equipment or labor
                    or (C) destruction  of or damage to all or  part of the
                    Facilities;

                         (iii) all or substantially  all of the  Facilities
                    or  the Plant  shall have  been condemned  or taken  by
                    eminent domain; or

                         (iv) the operation of  the Facilities or the Plant
                    shall have  been enjoined or shall  have otherwise been
                    prohibited  by,  or  shall  conflict with,  any  order,
                    decree,  rule or  regulation  of any  court  or of  any
                    federal, state or local regulatory body, administrative
                    agency or other governmental body.

                    (c)  The Bonds shall be subject to mandatory redemption
               by the  Pollution  Control  Corporation,  at  the  principal
               amount thereof plus accrued interest to the redemption date,
               on the 180th day (or such  earlier date as may be designated
               by  the Company) after a  final determination by  a court of
               competent jurisdiction  or an administrative agency,  to the
               effect  that, as  a result  of a failure  by the  Company to
               perform or observe any covenant, agreement or representation
               contained in the Loan Agreement, the interest payable on the
               Bonds  is included for  federal income  tax purposes  in the
               gross  income of the owners thereof, other than any owner of
               a Bond  who is a "substantial  user" of the  Facilities or a
               "related person" within the meaning of Section 103(b)(13) of
               the Internal Revenue  Code of  1954, as  amended (the  "1954
               Code").   No  determination by  any court  or administrative
               agency  shall be considered  final for the  purposes of this
               paragraph  (c)  unless the  Company  shall  have been  given
               timely  notice  of the  proceeding  which  resulted in  such
               determination  and an  opportunity  to participate  in  such
               proceeding, either  directly or through an owner  of a Bond,
               and until the conclusion  of any appellate review sought  by
               any party to such  proceeding or the expiration of  the time
               for seeking such review. The Bonds  shall be redeemed either
               in  whole or  in  part in  such  principal amount  that  the
               interest payable  on the  Bonds remaining  outstanding after
               such redemption would not be included in the gross income of
               any owner  thereof, other than an  owner of a Bond  who is a
               "substantial user"  of the Facilities or  a "related person"
               within the meaning of Section 103(b)(13) of the 1954 Code.

               If less than all of the Bonds at the time outstanding are to
          be called for  redemption, the  particular Bonds  or portions  of
          Bonds to be redeemed  shall be selected  by the Trustee, in  such
          manner as the Trustee in  its discretion may deem proper,  in the
          principal amounts  designated to  the Trustee  by the Company  or
          otherwise as required by the Indenture.

               In the event any of the Bonds are called for redemption, the
          Trustee shall give notice,  in the name of the  Pollution Control
          Corporation,  of the redemption of such Bonds.  Such notice shall
          be   given  by  mailing  a  copy  of  the  redemption  notice  by
          first-class  mail at  least thirty  (30) days  prior to  the date
          fixed for redemption to the Registered Owners of the  Bonds to be
          redeemed  at  the  addresses  shown on  the  registration  books;
          provided,  however, that  failure  duly to  give  such notice  by
          mailing,  or any defect therein, shall not affect the validity of
          any proceedings for the redemption of the Bonds as to which there
          shall be no such failure or defect.

               With  respect  to  any  notice  of redemption  of  Bonds  in
          accordance  with the  redemption provisions  lettered (a)  or (b)
          above, unless, upon the  giving of such notice, such  Bonds shall
          be deemed to have been paid within  the meaning of the Indenture,
          such  notice   shall  state   that  such  redemption,   shall  be
          conditional upon the  receipt, by the Trustee on  or prior to the
          opening  of business  on the  date fixed  for such  redemption of
          moneys  sufficient to pay the  principal of and  premium, if any,
          and  interest on  such Bonds  to be  redeemed, and  that if  such
          moneys shall not have been so received said notice shall be of no
          force and effect and the Pollution Control Corporation  shall not
          be required to redeem  such Bonds. In the event  that such notice
          of redemption contains such  a condition and such moneys  are not
          so received, the  redemption shall  not be made  and the  Trustee
          shall  within a reasonable  time thereafter  give notice,  in the
          manner in which  the notice  of redemption was  given, that  such
          moneys were not so received.

               If  a notice of redemption shall be unconditional, or if the
          conditions of a conditional notice of redemption shall  have been
          satisfied,  then  upon presentation  and  surrender  of Bonds  so
          called for redemption  at the  place or places  of payment,  such
          Bonds shall be redeemed.

               Any  Bonds  and  portions  of  Bonds  which  have  been duly
          selected  for redemption  shall  cease to  bear  interest on  the
          specified redemption date provided  that moneys sufficient to pay
          the principal of,  premium, if  any, and interest  on such  Bonds
          shall  be  on deposit  with the  Trustee  on the  date  fixed for
          redemption  so that  such  Bonds will  be deemed  to  be paid  in
          accordance  with the  Indenture and  such Bonds  shall thereafter
          cease to  be entitled to any lien,  benefit or security under the
          Indenture.

               The Registered Owner  of this  Bond shall have  no right  to
          enforce the provisions  of the Indenture, or  to institute action
          to  enforce the  covenants therein,  or to  take any  action with
          respect  to any  default  under the  Indenture, or  to institute,
          appear in or  defend any  suit or other  proceeding with  respect
          thereto, except as provided in the Indenture.

               With certain exceptions as  provided therein, the  Indenture
          and the  Loan Agreement may be modified  or amended only with the
          consent  of the  Registered  Owners of  a  majority in  aggregate
          principal  amount of  all Bonds  outstanding under  the Indenture
          which would be adversely affected thereby.

               Reference is  hereby  made to  the  Indenture and  the  Loan
          Agreement, copies of which are on file with the Trustee, for  the
          provisions, among others,  with respect to the  nature and extent
          of  the rights, duties  and obligations of  the Pollution Control
          Corporation, the  Company, the Trustee and  the Registered Owners
          of  the  Bonds.    The Registered  Owner  of  this  Bond,  by the
          acceptance  hereof, is deemed to have agreed and consented to the
          terms and provisions of the Indenture and the Loan Agreement.

               Among other things, as provided in the Indenture and subject
          to certain  limitations  therein  set forth,  this  Bond  or  any
          portion of the  principal amount  hereof will be  deemed to  have
          been paid within the meaning and with the effect expressed in the
          Indenture, and  the entire indebtedness of  the Pollution Control
          Corporation in respect thereof shall be satisfied and discharged,
          if  there has  been irrevocably  deposited with  the Trustee,  in
          trust,  money  in  an  amount  which will  be  sufficient  and/or
          Government  Obligations  (as  defined   in  the  Indenture),  the
          principal of and interest  on which, when due, without  regard to
          any  reinvestment thereof,  will provide  moneys which,  together
          with  moneys deposited  with  or held  by  the Trustee,  will  be
          sufficient, to pay when due the principal of and premium, if any,
          and interest on this Bond or such portion of the principal amount
          hereof when due.

               Among other  things,  the  Loan  Agreement  contains  terms,
          provisions and conditions relating to the consolidation or merger
          of  the Company  with or into,  and the  sale, transfer  or other
          disposition  of assets to, another Person (as defined in the Loan
          Agreement), to  the assumption by  such other Person,  in certain
          circumstances, of all of the obligations of the Company under the
          Loan Agreement and to  the release and discharge of  the Company,
          in certain circumstances, from such obligations.

               The   Pollution  Control   Corporation,  the   Trustee,  the
          Registrar,  the Paying Agent and any co-paying agent may deem and
          treat the  person in whose  name this  Bond is registered  as the
          absolute  owner hereof for all purposes, whether or not this Bond
          is overdue,  and neither  the Pollution Control  Corporation, the
          Trustee,  the  Paying  Agent  nor any  co-paying  agent  shall be
          affected by any notice to the contrary.

               It is hereby certified, recited  and declared that all acts,
          conditions and things  required by the  Constitution and laws  of
          the State of Arizona to exist,  to have happened and to have been
          performed,  precedent to and in the execution and delivery of the
          Indenture  and the issuance of this Bond, do exist, have happened
          and have  been performed in regular  and due form as  required by
          law.

               No  covenant or  agreement  contained in  this  Bond or  the
          Indenture shall be  deemed to be a  covenant or agreement  of any
          official,  officer, agent  or employee  of the  Pollution Control
          Corporation in  his individual capacity, and  neither the members
          of the Board  of Directors of the Pollution  Control Corporation,
          nor any official  executing this Bond, shall be liable personally
          on  this  Bond  or  be  subject  to  any  personal  liability  or
          accountability by reason of the issuance or sale of this Bond.

               This  Bond shall  not be  entitled to  any right  or benefit
          under the Indenture,  or be  valid or become  obligatory for  any
          purpose, until this  Bond shall  have been  authenticated by  the
          execution by the  Trustee, or  its successor as  Trustee, of  the
          certificate of authentication inscribed hereon.

                IN  WITNESS  WHEREOF,  Coconino County,  Arizona  Pollution
          Control  Corporation has caused this Bond to be executed with the
          manual or facsimile signature of its President or Vice  President
          and  attested  with  the manual  or  facsimile  signature  of its
          Secretary or Assistant Secretary.



                                             COCONINO COUNTY, ARIZONA
                                             POLLUTION CONTROL CORPORATION


          By_____________________________
                                                                President

          ATTEST:

          ______________________________
                    Secretary

   <PAGE> 


                                                                  EXHIBIT B


                     (FORM FOR ORDINARY REGISTRATION OF TRANSFER)

                       COMPLETE AND SIGN THIS FORM FOR ORDINARY
                               REGISTRATION OF TRANSFER


          FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
          transfer(s) unto

          Please  Insert Social  Security  Or Other  Identifying Number  of
          Assignee

          -----------------------------------------------------------------

          -----------------------------------------------------------------
          Please print or typewrite  name and address including postal  zip
          code of assignee

          -----------------------------------------------------------------
          this  bond   and  all   rights  thereunder,  hereby   irrevocably
          constituting and appointing
                                             attorney   to  register   such
          transfer on the registration books in the principal office of the
          Registrar, with full power of substitution in the premises.

          Dated:----------    --------------------------------------------
                              NOTE:   The signature on this assignment must
                              correspond  with the name  as written  on the
                              face   of  this  Bond  in  every  particular,
                              without alteration, enlargement or any change
                              whatsoever.

   <PAGE> 


                                                                  EXHIBIT C

                  (FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION)

                         CERTIFICATE OF AUTHENTICATION

                    This is to  certify that this Bond is  one of the Bonds
               described in the within-mentioned Indenture.


                              FIRST TRUST OF NEW YORK, NATIONAL ASSOCIATION,
                                   as Trustee


          By_____________________________________________
                          Authorized Officer


          Date of Authentication:______________________



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