HERITAGE PROPANE PARTNERS L P
10-Q, 1997-01-14
RETAIL STORES, NEC
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<PAGE>   1
================================================================================

                                   FORM 10-Q

                       SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C.  20549


[x]      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
         EXCHANGE ACT OF 1934

For the Quarterly Period Ended November 30, 1996

                                       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 1-11727

                        HERITAGE PROPANE PARTNERS, L.P.
             (Exact name of registrant as specified in its charter)


<TABLE>
<S>                                              <C>
           DELAWARE                                73-1493906
(State or other jurisdiction of                  (I.R.S. Employer
incorporation or organization)                   Identification No.)
</TABLE>

                       8801 SOUTH YALE AVENUE, SUITE 310
                             TULSA, OKLAHOMA 74137
                             (Address of principal
                               executive offices
                                 and zip code)

                                 (918) 492-7272
              (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 
    -----------       ----------

As of January 10, 1997, there were 4,285,000 common units representing limited
partner interests of Heritage Propane Partners, L.P. outstanding.

===============================================================================
<PAGE>   2
                                   FORM 10-Q
                        HERITAGE PROPANE PARTNERS, L.P.

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                      Pages
                                                                                      -----
<S>                                                                                     <C>
PART I FINANCIAL INFORMATION                                                 
                                                                             
         Item 1. Financial Statements                                        
                                                                             
                 Heritage Propane Partners, L.P. and Subsidiaries            
                 ------------------------------------------------            
                                                                             
                 Consolidated Balance Sheets as of November 30, 1996,        
                    August 31, 1996, and November 30, 1995                              1
                                                                             
                 Consolidated Statements of Operations for the three         
                    months ended November 30, 1996 and 1995                             2
                                                                             
                 Consolidated Statements of Cash Flows for the three         
                    months ended November 30, 1996 and 1995                             3
                                                                             
                 Notes to Consolidated Financial Statements                             4
                                                                             
         Item 2. Management's Discussion and Analysis of Financial           
                    Condition and Results of Operations                                 5
                                                                             
PART II OTHER INFORMATION                                                    
                                                                             
         Item 6. Exhibits and Reports on Form 8-K                                       8
                                                                             
         Signatures                                                          
</TABLE>





                                      -i-
<PAGE>   3
                                   FORM 10-Q
                         PART I - FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS

                HERITAGE PROPANE PARTNERS, L.P. AND SUBSIDIARIES
                          CONSOLIDATED BALANCE SHEETS
                   (IN THOUSANDS, EXCEPT SHARE AND UNIT DATA)
<TABLE>
<CAPTION>
                                                                  November 30,    August 31,    November 30,
                                                                     1996            1996           1995  
                                                                  ------------    -----------   -------------
                                                                   (unaudited)                   (unaudited)
                                                                                                (Predecessor)
                                                      ASSETS
 CURRENT ASSETS:                                                                                             
<S>                                                               <C>             <C>             <C>
   Cash                                                               $ 1,987         $1,170      $    1,329
   Accounts receivable, net                                            23,985         10,859          15,412
   Inventories                                                         12,600         11,115          10,399
   Prepaid expenses                                                     1,373            870           1,591
   Deferred income taxes                                                  ---            ---           1,483
                                                                  -----------     ----------      ----------
      Total current assets                                             39,945         24,014          30,214

 PROPERTY, PLANT AND EQUIPMENT, net                                   110,982        110,342         101,094

 INVESTMENT IN AFFILIATES                                               4,927          4,882           4,823
                                                                                                            
 INTANGIBLES AND OTHER ASSETS, net                                     48,153         48,612          40,497
                                                                  -----------     ----------      ----------
      Total assets                                                $   204,007     $  187,850      $  176,628
                                                                  ===========     ==========      ==========

                                     LIABILITIES AND PARTNERS' CAPITAL

 CURRENT LIABILITIES:

   Working capital facilities                                     $    10,600     $    5,600      $   11,000   
   Accounts payable                                                    23,326         13,155          13,817
   Accrued and other current liabilities                                9,730          5,730           8,918
   Current maturities of long-term debt                                   254            243          19,058
                                                                  -----------     ----------      ----------
      Total current liabilities                                        43,910         24,728          52,793

 LONG-TERM DEBT                                                       132,598        132,521          99,633

 DEFERRED INCOME TAXES                                                    ---            ---          19,326
                                                                  -----------     ----------      ----------
      Total liabilities                                               176,508        157,249         171,752
                                                                  -----------     ----------      ----------
 COMMITMENTS AND CONTINGENCIES

 5% CUMULATIVE REDEEMABLE PREFERRED STOCK, $.01 par value,
 19,262 shares authorized, 9,487 issued                                   ---            ---          12,488
                                                                  -----------     ----------      ----------
 PARTNERS' CAPITAL:

          Common unit holders (4,285,000 units outstanding)            14,759         16,392             ---
          Subordinated unit holders (3,702,943 units 
            outstanding)                                               12,493         13,902             ---
          General Partner                                                 247            307             --- 
                                                                  -----------     ----------      ----------
                  Total partners' capital                              27,499         30,601             ---
                                                                  -----------     ----------      ----------
STOCKHOLDERS' DEFICIT:
          Class A common stock, $.01 par value 2,648,517
            authorized, 1,284,105 issued                                  ---            ---              13
          Class B common stock, $.01 par value, 441,419
            authorized, 357,500 issued                                    ---            ---               3
          Additional paid-in capital                                      ---            ---           4,234
          Accumulated deficit                                             ---            ---         (11,862)
                                                                  -----------     ----------      ----------
                  Total stockholders' deficit                             ---            ---          (7,612) 
                                                                  -----------     ----------      ----------
                  Total liabilities and partners' capital            $204,007       $187,850        $176,628
                                                                  ============    ==========      ==========

              THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED BALANCE SHEETS.
</TABLE>





                                                           -1-
<PAGE>   4
HERITAGE PROPANE PARTNERS, L.P. AND SUBSIDIARIES

                     CONSOLIDATED STATEMENTS OF OPERATIONS
                        (IN THOUSANDS, EXCEPT UNIT DATA)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                                                     Three Months Ended
                                                                                                         November 30,
                                                                                                     1996             1995    
                                                                                                 ------------     ------------
                                                                                                                  (Predecessor)
 <S>                                                                                             <C>               <C>
 REVENUES

    Retail                                                                                         $  30,086        $  21,755
    Wholesale                                                                                         15,481            9,557
    Other                                                                                              5,076            4,629
                                                                                                   ---------        ---------
        Total revenues                                                                                50,643           35,941
                                                                                                   ---------        ---------
 COST AND EXPENSES
    Cost of products sold                                                                             34,482           21,770
    Depreciation and amortization                                                                      2,611            2,381
    Selling, general and administrative                                                                1,210            1,044
    Operating expenses                                                                                 9,661            8,293
                                                                                                   ---------        ---------
        Total costs and expenses                                                                      47,964           33,488
                                                                                                   ---------        ---------
 OPERATING INCOME                                                                                      2,679            2,453
                                                                                                   ----------       ---------
 GAIN ON DISPOSAL OF ASSETS                                                                              132               57

 OTHER INCOME                                                                                            150              116

 EQUITY IN EARNINGS OF AFFILIATES                                                                         40               48

 INTEREST EXPENSE                                                                                     (2,942)          (3,276) 
                                                                                                   ---------        ---------
 INCOME (LOSS) BEFORE MINORITY INTEREST                                                                   59             (602)

 MINORITY INTEREST                                                                                      (155)             (97)
                                                                                                   ---------        ---------
 NET LOSS                                                                                                (96)       $    (699)
                                                                                                                    =========
 GENERAL PARTNER'S INTEREST IN NET LOSS                                                                   (1)
                                                                                                   ---------        
 LIMITED PARTNERS' INTEREST IN NET LOSS                                                            $     (95)
                                                                                                   =========
 NET LOSS PER LIMITED PARTNER UNIT                                                                 $    (.02)  
                                                                                                   =========
 WEIGHTED AVERAGE NUMBER OF UNITS OUTSTANDING                                                               
                                                                                                   4,285,000
                                                                                                   =========
</TABLE>

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED STATEMENTS.





                                                           -2-
<PAGE>   5
               HERITAGE PROPANE PARTNERS, L.P., AND SUBSIDIARIES

                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (DOLLARS IN THOUSANDS)
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                               For the Three Months Ended
                                                                                      November 30,
                                                                                  1996            1995        
                                                                              ------------    ------------    
                                                                                             (Predecessor)    
 <S>                                                                         <C>             <C>
 CASH FLOWS FROM OPERATING ACTIVITIES:

    Net Loss                                                                 $     (95)       $    (699)
    Reconciliation of net loss to net cash used in
      operating activities--
      Depreciation and amortization                                              2,471            2,381
      Provision for losses on accounts receivable                                  114               36
      Gain on disposal of assets                                                  (132)             (57)
      Increase in deferred income taxes                                            ---               24
      Undistributed earnings of affiliates                                         (45)             (82)
      Changes in assets and liabilities, net of effect of
        acquisitions:
        Accounts receivable                                                    (13,235)          (7,363)
        Inventories                                                             (1,485)            (268)
        Prepaid expenses                                                          (502)            (756)
        Intangibles and other assets                                               (32)            (333)
        Accounts payable                                                         6,761            2,268
        Accrued and other current liabilities                                    3,998            3,448 
                                                                             ---------        ---------
          Net cash used in operating activities                                 (2,182)          (1,401)
                                                                             ---------        ---------
 CASH FLOWS FROM INVESTING ACTIVITIES:
    Cash paid for acquisitions, net of cash acquired                              (366)          (4,150)
    Capital expenditures                                                        (2,193)          (2,091)
    Proceeds from asset sales                                                      248               76
                                                                             ---------        ---------
          Net cash used in investing activities                                 (2,311)          (6,165)
                                                                             ---------        ---------
 CASH FLOWS FROM FINANCING ACTIVITIES:
    Proceeds from borrowings                                                    16,844           16,964
    Principal payments on debt                                                  (7,528)          (9,521)
    Unit distribution to partners                                               (2,878)            ---
    Capital adjustment for MLP costs                                              (128)            ---
    Issuance of common stock                                                       ---               59
    Deferred tax adjustment                                                        ---              170
    Minority interest                                                              ---              (14)
                                                                             ---------        ---------
          Net cash provided by financing activities                              5,310            7,658
                                                                             ---------        ---------
 INCREASE IN CASH                                                                  817               92
 CASH, beginning of period                                                       1,170            1,237
                                                                             ---------        ---------
 CASH, end of period                                                         $   1,987        $   1,329
                                                                             =========        =========
 NONCASH FINANCING ACTIVITIES:
    Notes payable incurred on noncompete agreements                          $     182        $      40
    5% preferred stock dividend                                                    ---              150

 SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
    Cash paid during the period for--
      Interest                                                               $     491        $     364
</TABLE>


 THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED STATEMENTS.





                                      -3-
<PAGE>   6
                HERITAGE PROPANE PARTNERS, L.P. AND SUBSIDIARIES

              NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1.       GENERAL:

The accompanying unaudited consolidated financial statements have been prepared
by Heritage Propane Partners, L.P. (the Company) and should be read in
conjunction with the Company's consolidated financial statements as of August
31, 1996 and the notes thereto included in the Company's consolidated financial
statements included in Form 10-K as filed with the Securities and Exchange
Commission.  The foregoing financial statements include only normal recurring
accruals and all adjustments which the Company considers necessary for a fair
presentation.

2.       DETAILS TO CONSOLIDATED BALANCE SHEETS:

Inventories are valued at the lower of cost or market.  The cost of fuel
inventories is determined using average cost while the cost of appliances,
parts and fittings is determined by the first-in, first-out method.
Inventories consist of the following:

<TABLE>
<CAPTION>
                                                     NOV. 30,          AUG. 31,             NOV. 30,
                                                       1996              1996                 1995 
                                                    ---------        ----------           ---------
                                                   (UNAUDITED)                            (UNAUDITED)
                                                                                         (PREDECESSOR)
 <S>                                                  <C>             <C>                 <C>
 Fuel                                              $    9,511         $   7,735           $    7,244
 Appliances, parts and fittings                         3,089             3,380                3,155
                                                   ----------         ---------           ----------
                                                   $   12,600         $  11,115           $   10,399
                                                   ==========         =========           ==========
</TABLE>

3.       LOSS PER LIMITED PARTNER UNIT:

Loss per limited partner unit is computed by dividing net loss, after
considering the General Partner's one percent interest, by the weighted average
number of Common and Subordinated Units outstanding. 

4.       CASH DISTRIBUTIONS:

A cash distribution of $2,820, or $.353 per Common and Subordinated unit, was
paid on October 15, 1996 to Unitholders of record on October 1, 1996 and $58 was
distributed to the General Partner.




                                      -4-
<PAGE>   7
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

ANALYSIS OF UNAUDITED HISTORICAL RESULTS OF OPERATIONS

         On June 28, 1996, Heritage Propane Partners, L.P. (the Partnership)
acquired certain assets of Heritage Holdings, Inc. (the Company) and completed
an initial public offering.  The following discussion reflects for the periods
indicated the results of operations and operating data for the Partnership and
its predecessor, the Company.  During fiscal year 1996, the Company consummated
eight acquisitions which affect the comparability of prior period financial
results as they are included in all three months of the quarter ending November
30, 1996, yet for the most part were not included in the same period a year ago.
Amounts discussed below reflect 100% of the results of operations of M-P Oils
Partnership, a general partnership in which the Company owns a 60% interest.
Because M-P Oils Partnership is primarily engaged in lower-margin wholesale
propane distribution, its contribution to the Partnership's net income and
EBITDA is not significant.

         Three Months Ended November 30, 1996 Compared to Three Months Ended
November 30, 1995.

         Volume.  During the three months ended November 30, 1996, the Company
sold 31.5 million retail gallons, an increase of 5.4 million retail gallons or
20.7% from the 26.1 million retail gallons sold in the three months ended
November 30, 1995.  This increase was primarily attributable both to the effect
of acquisitions and internal growth and, to a lesser extent, colder weather.

         The Company also sold approximately 30.0 million wholesale gallons in
the three months ended November 30, 1996, a 2.2 million gallon or 7.9% increase
from the 27.8 million wholesale gallons sold in the prior year three-month
period.  The increase in wholesale volumes was largely attributable to
increased wholesale volumes in the United States.

         Revenues.  Total revenues increased $14.7 million or 40.9% to $50.6
million for the three months ended November 30, 1996, as compared to $35.9
million for the prior year three-month period.  Domestic revenues increased
$10.4 million or 37.7% to $38.0 million for the three months ended November 30,
1996, as compared to $27.6 million for the three-month period ended November
30, 1995.  Foreign revenues increased $4.3 million or 51.8% to $12.6 million
for the three months ended November 30, 1996, as compared to $8.3 million for
the three-month period ended November 30, 1995.  The increase in foreign
revenues was attributable entirely to increased selling prices where as the
increased domestic revenues were due in equal parts from higher selling prices
and greater volumes.

         Cost of Sales.  Total cost of sales increased $12.7 million or 58.3%
to $34.5 million for the three months ended November 30, 1996, as compared to
$21.8 million for the three months ended November 30, 1995.  Domestic costs of
sales increased $8.5 million or 61.6% to $22.3 million for the three months
ended November 30, 1996, as compared to $13.8 million for the three-month
period ended November 30, 1995.  Foreign cost of sales increased $4.2 million
or 52.5% to $12.2 million for the three months ended November 30, 1996, as
compared to $8.0 million for the three-month period ended November 30, 1995.
The increase was primarily attributable to higher propane costs and increased
volumes sold.

         Gross Profit. Gross profit increased $2.0 million or 14.2% to $16.1
million for the three months ended November 30, 1996, as compared to $14.1
million for the prior year three-month period.  This increase was attributable 
to an increase in volumes sold, partially offset by a margin decline caused 
primarily by an increase in propane costs from suppliers.





                                      -5-
<PAGE>   8
         Operating Expenses.  Operating expenses increased $1.4 million or
16.9% to $9.7 million in the three months ended November 30, 1996, as compared
to $8.3 million in the three months ended November 30, 1995.  The entire amount
of this increase was attributable to increased volumes.

         Selling, General and Administrative.  Selling, general and
administrative expenses were $1.2 million for the three months ended 
November 30, 1996, an increase from $1.0 million for the prior year three-month
period. This increase resulted from costs associated with being a public entity
and a master limited partnership.

         Depreciation and Amortization.  Depreciation and amortization
increased approximately $.2 million or 8.3% to $2.6 million in the three months
ended November 30, 1996, as compared to $2.4 million for the three months ended
November 30, 1995.  This increase was the result of additional depreciation
associated with acquisitions.

         Operating Income.  Operating income increased $.2 million or 8.0% to
$2.7 million for the three months ended November 30, 1996, as compared to $2.5
million for the prior year three-month period.  This increase was due primarily
to increased volumes, partially offset by a decline in margins.

         Net Loss.  The Partnership's net loss was approximately $.1 million
for the three months ended November 30, 1996 and $.7 million for the three
months ended November 30, 1995, as a result of higher operating income and
lower interest expense for the three months ended November 30, 1996.

         EBITDA. EBITDA increased $.6 million or 12.2% to $5.5 million in the 
three months ended November 30, 1996, as compared to $4.9 million for the prior
year three-month period.  This increase was due to an increase in volumes
attributable to acquisitions, favorable weather conditions and internal growth,
partially offset by a decrease in gross margins.

LIQUIDITY AND CAPITAL RESOURCES

         Cash Flows

         Cash used by operating activities during the three months ended
November 30, 1996 was $2.2 million compared with $1.4 million during the three
months ended November 30, 1995.  The cash flows from operations before changes
in working capital actually increased during the three months ended November
30, 1996 but were offset by increases in accounts receivable and inventory
resulting from higher supplier propane prices.

         Cash used in investing activities during the three months ended
November 30, 1996 included capital expenditures for acquisitions amounting to
$.4 million.  An additional $2.2 million was spent for remaining maintenance
needed to sustain operations at current levels, new customer tanks to support
growth of operations and other miscellaneous capitalized items.

         Cash provided by financing activities during the three months ended
November 30, 1996 of $5.3 million primarily reflects net borrowings under the
credit facilities available to the Company.

         Financing and Sources of Liquidity

         In June 1996, the Partnership entered into a Bank Credit Facility,
which includes a Working Capital Facility, a revolving credit facility
providing for up to $15.0 million of borrowings to be used for working capital
and other general partnership purposes, and an Acquisition Facility, a
revolving credit facility providing for up to $25.0 million of borrowings to be
used for acquisitions and improvements.





                                      -6-
<PAGE>   9
         The Partnership uses almost all of its cash provided by operating and
financing activities to fund acquisition, maintenance and growth capital
expenditures.  Acquisition capital expenditures, which include expenditures
related to the acquisition of retail propane operations and a portion of the
purchase price allocated to intangibles associated with such acquired
businesses, were $.4 million for the three months ended November 30, 1996, as
compared to $4.2 million during the three months ended November 30, 1995.

         The assets utilized in the propane business do not typically require
lengthy manufacturing process time nor complicated, high technology components.
Accordingly, the Partnership does not have any significant financial commitments
for capital expenditures.  In addition, the Partnership has not experienced any
significant increases attributable to inflation in the cost of these assets.

         The ability of the Partnership to satisfy its obligations will depend
on its future performance, which will be subject to prevailing economic,
financial, business and weather conditions and other factors, many of which are
beyond its control.  Future capital needs of the Partnership are expected to be
provided by future operations, existing cash balances and the Working Capital
Facility.  The Partnership may incur additional indebtedness or issue
additional Units in order to fund possible future acquisitions.





                                      -7-
<PAGE>   10
                                   FORM 10-Q
                          PART II -- OTHER INFORMATION


ITEM 6.  EXHIBITS AND REPORTS OF FORM 8-K

(a)      The following exhibits are filed as part of this Report.  Exhibits
         required by Item 601 of Regulation S-K, but which are not listed
         below, are not applicable.

                 Exhibit
                 Number           Description
                 -------          -----------
                   10.1           Bank Credit Facility ("BCF")

                 10.1.1           Amendment of BCF dated as of July 9, 1996.

                   10.2           Note Purchase Agreement ("NPA")

                 10.2.1           Amendment of NPA dated as of July 25, 1996.

                   27.1           Financial Data Schedule - Filed with EDGAR
                                  version only


(b)      No reports on Form 8-K have been filed by the registrant for the
         quarter for which this report is filed.





                                      -8-
<PAGE>   11
                                   SIGNATURES


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.


                                        HERITAGE PROPANE PARTNERS, L.P.

                                   By:  Heritage Holdings, Inc., General Partner



Date:  January 14, 1997                      By:
                                               ------------------------------
                                               H. Michael Krimbill
                                               (Chief Accounting Officer and
                                               officer duly authorized to
                                               sign on behalf of the registrant)





                                      -9-
<PAGE>   12
                                 EXHIBIT INDEX
                                        
                 Exhibit
                 Number           Description
                 -------          -----------
                   10.1           Bank Credit Facility ("BCF")

                 10.1.1           Amendment of BCF dated as of July 9, 1996.

                   10.2           Note Purchase Agreement ("NPA")

                 10.2.1           Amendment of NPA dated as of July 25, 1996.

                   27.1           Financial Data Schedule - Filed with EDGAR
                                  version only



<PAGE>   1

                                CREDIT AGREEMENT


                           DATED AS OF JUNE 25, 1996


                               BETWEEN AND AMONG


                           HERITAGE OPERATING, L.P.,
                         A DELAWARE LIMITED PARTNERSHIP

                                   "BORROWER"

                                      AND

                       THE FIRST NATIONAL BANK OF BOSTON,

                                      AND

                    BANK OF OKLAHOMA, NATIONAL ASSOCIATION,

                                    "BANKS"

                                      AND

                       THE FIRST NATIONAL BANK OF BOSTON

                    AS "ADMINISTRATIVE AGENT" FOR THE BANKS

                                      AND

                     BANK OF OKLAHOMA, NATIONAL ASSOCIATION

                     AS "DOCUMENTATION AGENT" FOR THE BANKS
<PAGE>   2
Acquisition Note
Page i
                               TABLE OF CONTENTS


<TABLE>
         <S>                   <C>                                                                                     <C>
         ARTICLE I             DEFINITIONS; ACCOUNTING PRINCIPALS,
                               TERMS AND DEFINITIONS; CONSTRUCTION  . . . . . . . . . . . . . . . . . . . . . . . . .   2

                               1.1   Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                               1.2   Accounting Principles, Terms and Determinations  . . . . . . . . . . . . . . . .  28
                               1.3   Construction   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

         ARTICLE II            THE CREDITS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

                               2.1   Acquisition Facility.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

                                     2.1.1    Acquisition Loan  . . . . . . . . . . . . . . . . . . . . . . . . . . .  29
                                     2.1.2    Maximum Amount of Acquisition Credit  . . . . . . . . . . . . . . . . .  29
                                     2.1.3    Acquisition Loan Borrowing Requests   . . . . . . . . . . . . . . . . .  29
                                     2.1.4    Acquisition Loan Account:  Acquisition Notes  . . . . . . . . . . . . .  29

                               2.2   Working Capital Facility   . . . . . . . . . . . . . . . . . . . . . . . . . . .  30

                                     2.2.1    Working Capital Loan  . . . . . . . . . . . . . . . . . . . . . . . . .  30
                                     2.2.2    Maximum Amount of Working Capital Credit  . . . . . . . . . . . . . . .  30
                                     2.2.3    Working Capital Borrowing Requests  . . . . . . . . . . . . . . . . . .  30
                                     2.2.4    Working Capital Loan Account: Working Capital Notes   . . . . . . . . .  31

                               2.3   Letters of Credit  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31

                                     2.3.1    Issuance of Letters of Credit   . . . . . . . . . . . . . . . . . . . .  31
                                     2.3.2    Requests for Letters of Credit  . . . . . . . . . . . . . . . . . . . .  31
                                     2.3.3    Form and Expiration of Letters of Credit  . . . . . . . . . . . . . . .  32
                                     2.3.4    Banks' Participation in Letters of Credit   . . . . . . . . . . . . . .  32
                                     2.3.5    Presentation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
                                     2.3.6    Payment of Drafts   . . . . . . . . . . . . . . . . . . . . . . . . . .  32
                                     2.3.7    Uniform Customs and Practice  . . . . . . . . . . . . . . . . . . . . .  33
                                     2.3.8    Subrogation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
                                     2.3.9    Modification, Consent, etc.   . . . . . . . . . . . . . . . . . . . . .  34

                               2.4   Application of Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34

                                     2.4.1    Acquisition Loan  . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
                                     2.4.2    Working Capital Loan  . . . . . . . . . . . . . . . . . . . . . . . . .  35
                                     2.4.3    Letters of Credit   . . . . . . . . . . . . . . . . . . . . . . . . . .  35
                                     2.4.4    Specifically Prohibited Applications  . . . . . . . . . . . . . . . . .  35

                               2.5   Nature of Obligations of Banks to Make Extensions of Credit  . . . . . . . . . .  35
</TABLE>




                                     (i)
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<TABLE>
         <S>                   <C>                                                                                     <C>
         ARTICLE III           INTEREST; EURODOLLAR PRICING OPTIONS; FEES . . . . . . . . . . . . . . . . . . . . . .  35

                               3.1   Interest   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
                               3.2   Eurodollar Pricing Options.  . . . . . . . . . . . . . . . . . . . . . . . . . .  36

                                     3.2.1    Election of Eurodollar Pricing Options.   . . . . . . . . . . . . . . .  36
                                     3.2.2    Notice to Banks and Borrower  . . . . . . . . . . . . . . . . . . . . .  36
                                     3.2.3    Selection of Eurodollar Interest Periods  . . . . . . . . . . . . . . .  37
                                     3.2.4    Additional Interest   . . . . . . . . . . . . . . . . . . . . . . . . .  37
                                     3.2.5    Violation of  Bank Legal Requirements   . . . . . . . . . . . . . . . .  37
                                     3.2.6    Funding Procedure   . . . . . . . . . . . . . . . . . . . . . . . . . .  38

                               3.3   Commitment Fees  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38

                                     3.3.1    Acquisition Financing Facility  . . . . . . . . . . . . . . . . . . . .  38
                                     3.3.2    Working Capital Facility  . . . . . . . . . . . . . . . . . . . . . . .  38

                               3.4   Letter of Credit Fees  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
                               3.5   Reserve Requirements, etc.   . . . . . . . . . . . . . . . . . . . . . . . . . .  39
                               3.6   Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
                               3.7   Capital Adequacy   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
                               3.8   Regulatory Changes   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
                               3.9   Computations of Interest and Fees  . . . . . . . . . . . . . . . . . . . . . . .  41
                               3.10  Closing Fees   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
                               3.11  Administrative Agent's Fees  . . . . . . . . . . . . . . . . . . . . . . . . . .  41
                               3.12  Documentation Agent's Fees   . . . . . . . . . . . . . . . . . . . . . . . . . .  41

         ARTICLE IV            PAYMENT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41

                               4.1   Payment at Maturity  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
                               4.2   Contingent Required Prepayments  . . . . . . . . . . . . . . . . . . . . . . . .  42

                                     4.2.1    Excess Credit Exposure  . . . . . . . . . . . . . . . . . . . . . . . .  42
                                     4.2.2    Letter of Credit Exposure   . . . . . . . . . . . . . . . . . . . . . .  42
                                     4.2.3    Contingent Prepayments on Disposition, Loss of Assets,
                                               Merger or Change of Control  . . . . . . . . . . . . . . . . . . . . .  42
                                     4.2.4    Prepayment Procedure for Contingent Prepayments   . . . . . . . . . . .  43

                               4.3   Scheduled Required Payments/Prepayments  . . . . . . . . . . . . . . . . . . . .  43

                                     4.3.1    Payments on the Acquisition Loan  . . . . . . . . . . . . . . . . . . .  43
                                     4.3.2    Working Capital Loan  . . . . . . . . . . . . . . . . . . . . . . . . .  44
</TABLE>




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<TABLE>
         <S>                 <C>                                                                                       <C>
                               4.4   Voluntary Prepayments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
                               4.5   Letters of Credit  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
                               4.6   Reborrowing Application of Payments, etc.  . . . . . . . . . . . . . . . . . . .  44

                                     4.6.1    Reborrowing   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
                                     4.6.2    Order of Application  . . . . . . . . . . . . . . . . . . . . . . . . .  45
                                     4.6.3    Payment with Accrued Interest, etc.   . . . . . . . . . . . . . . . . .  45
                                     4.6.4    Payments for Banks  . . . . . . . . . . . . . . . . . . . . . . . . . .  45

         ARTICLE V             SECURITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45

                               5.1   Collateral   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
                               5.2   Intercreditor Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45

         ARTICLE VI            CONDITIONS PRECEDENT AND SUBSEQUENT TO LOANS . . . . . . . . . . . . . . . . . . . . .  46

                               6.1   Conditions Precedent to Initial Working Capital Loan
                                      and Initial Acquisition Loan  . . . . . . . . . . . . . . . . . . . . . . . . .  46

                                     (i)      No Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
                                     (ii)     Representations and Warranties  . . . . . . . . . . . . . . . . . . . .  46
                                     (iii)    Certificates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
                                     (iv)     Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
                                     (v)      Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
                                     (vi)     Security Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . .  47
                                     (vii)    Private Placement Notes and Common Units Closings . . . . . . . . . . .  47
                                     (viii)   Opinions of Borrower's Counsel  . . . . . . . . . . . . . . . . . . . .  47
                                     (ix)     UCC Releases/Other Information  . . . . . . . . . . . . . . . . . . . .  47
                                     (x)      Fees  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
                                     (xi)     Other Information and Closing Documents . . . . . . . . . . . . . . . .  48

                             6.2     Conditions Precedent to All Loans.   . . . . . . . . . . . . . . . . . . . . . .  48

         ARTICLE VII         COVENANTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48

                             7A.     Affirmative Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48

                                     7A.1     Financial Statements  . . . . . . . . . . . . . . . . . . . . . . . . .  48
                                     7A.2     Inspection of Property  . . . . . . . . . . . . . . . . . . . . . . . .  52
                                     7A.3     Covenant to Secure Notes Equally  . . . . . . . . . . . . . . . . . . .  52
                                     7A.4     Partnership or Corporate Existence, etc.; Compliance
                                               with Laws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
                                     7A.5     Payment of Taxes and Claims . . . . . . . . . . . . . . . . . . . . . .  53
</TABLE>




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<TABLE>
         <S>                 <C>                                                                                     <C>
                                     7A.6     Compliance with ERISA . . . . . . . . . . . . . . . . . . . . . . . . .  53
                                     7A.7     Maintenance and Sufficiency of Properties . . . . . . . . . . . . . . .  53
                                     7A.8     Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
                                     7A.9     Environmental Laws  . . . . . . . . . . . . . . . . . . . . . . . . . .  54
                                     7A.10    Operative Agreements  . . . . . . . . . . . . . . . . . . . . . . . . .  55
                                     7A.11    After-Acquired Property . . . . . . . . . . . . . . . . . . . . . . . .  55
                                     7A.12    Further Assurances  . . . . . . . . . . . . . . . . . . . . . . . . . .  55
                                     7A.13    Books and Accounts  . . . . . . . . . . . . . . . . . . . . . . . . . .  55
                                     7A.14    Available Cash Reserves . . . . . . . . . . . . . . . . . . . . . . . .  55
                                     7A.15    Parity Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56

                             7B.     Negative Covenants   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57

                                     7B.1     Financial Ratios  . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
                                     7B.2     Indebtedness  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
                                     7B.3     Liens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
                                     7B.4     Priority Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
                                     7B.5     Loans, Advances, Investments and Contingent Liabilities . . . . . . . .  62
                                     7B.6     Restricted Payments . . . . . . . . . . . . . . . . . . . . . . . . . .  64
                                     7B.7     Consolidation, Merger, Sale of Assets, etc. . . . . . . . . . . . . . .  64
                                     7B.8     Business  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  67
                                     7B.9     Transactions with Affiliates  . . . . . . . . . . . . . . . . . . . . .  67
                                     7B.10    Subsidiary Stock and Indebtedness . . . . . . . . . . . . . . . . . . .  67
                                     7B.11    Payment of Dividends by  Subsidiaries . . . . . . . . . . . . . . . . .  68
                                     7B.12    Sales of Receivables  . . . . . . . . . . . . . . . . . . . . . . . . .  68
                                     7B.13    Material Agreements; Tax Status . . . . . . . . . . . . . . . . . . . .  68

         ARTICLE VIII        REPRESENTATIONS, COVENANTS AND
                              WARRANTIES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  69

                             8.1     Organization   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  69
                             8.2     Partnership Interests  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  69
                             8.3     Qualification  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  69
                             8.4     Business; Financial Statements   . . . . . . . . . . . . . . . . . . . . . . . .  70
                             8.5     Actions Pending  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  71
                             8.6     Changes.   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  71
                             8.7     Outstanding Indebtedness   . . . . . . . . . . . . . . . . . . . . . . . . . . .  71
                             8.8     Transfer of Assets and Business; Title to Properties   . . . . . . . . . . . . .  71
                             8.9     Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  72
                             8.10    Compliance with Other Instruments, etc.; Solvency  . . . . . . . . . . . . . . .  72
                             8.11    Governmental Consent   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
                             8.12    Use of Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
                             8.13    ERISA  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
                             8.14    Environmental Compliance   . . . . . . . . . . . . . . . . . . . . . . . . . . .  74
                             8.15    Pre-emptive Rights   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
                             8.16    Disclosure   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
                             8.17    Federal Reserve Regulations  . . . . . . . . . . . . . . . . . . . . . . . . . .  75
                             8.18    Investment Borrower Act  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
                             8.19    Public Utility Holding Company Act   . . . . . . . . . . . . . . . . . . . . . .  76
                             8.20    Matters Relating to the General Partner  . . . . . . . . . . . . . . . . . . . .  76
</TABLE>




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<TABLE>
         <S>                 <C>                                                                                       <C>
         ARTICLE IX          EVENTS OF DEFAULT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76

                             9.1     Acceleration   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
                             9.2     Remedies   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  79
                             9.3     Other Remedies   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  79

         ARTICLE X           LOAN OPERATIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  80

                             10.1    Interests in Loans/Commitments   . . . . . . . . . . . . . . . . . . . . . . . .  80
                             10.2    Administrative Agent's Authority to Act  . . . . . . . . . . . . . . . . . . . .  80
                             10.3    Borrower to Pay Administrative Agent   . . . . . . . . . . . . . . . . . . . . .  80
                             10.4    Bank Operations for Advances, Letters of Credit  . . . . . . . . . . . . . . . .  80

                                     10.4.1  Advances   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  80
                                     10.4.2  Letters of Credit  . . . . . . . . . . . . . . . . . . . . . . . . . . .  81
                                     10.4.3  Administrative Agent to Allocate Payments  . . . . . . . . . . . . . . .  81
                                     10.4.4  Delinquent Banks; Nonperforming Banks  . . . . . . . . . . . . . . . . .  82

                             10.5    Sharing of Payments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  82
                             10.6    Amendments, Consents, Waivers  . . . . . . . . . . . . . . . . . . . . . . . . .  83
                             10.7    Administrative Agent's Resignation   . . . . . . . . . . . . . . . . . . . . . .  84
                             10.8    Concerning the Agents  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  84

                                     10.8.1  Action in Good Faith   . . . . . . . . . . . . . . . . . . . . . . . . .  84
                                     10.8.2  No Implied Duties  . . . . . . . . . . . . . . . . . . . . . . . . . . .  85
                                     10.8.3  Validity   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  85
                                     10.8.4  Compliance   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  85
                                     10.8.5  Employment Agents and Counsel  . . . . . . . . . . . . . . . . . . . . .  85
                                     10.8.6  Reliance on Documents and Counsel  . . . . . . . . . . . . . . . . . . .  86
                                     10.8.7  Agents' Reimbursement  . . . . . . . . . . . . . . . . . . . . . . . . .  86
                                     10.8.8  Agent's Fees   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  86

                             10.9    Rights as a Bank   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  86
                             10.10   Independent Credit Decision  . . . . . . . . . . . . . . . . . . . . . . . . . .  86
                             10.11   Indemnification  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  87

         ARTICLE XI          ASSIGNMENTS/PARTICIPATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  87

                   11.       Successors and Assigns; Bank Assignment and Participations . . . . . . . . . . . . . . .  87

                             11.1    Assignments by Banks   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  87

                                     11.1.1  Assignees and Assignment Procedures.   . . . . . . . . . . . . . . . . .  88
</TABLE>




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<TABLE>
         <S>                 <C>                                                                                       <C>
                                     11.1.2  Terms of Assignment and Acceptance.  . . . . . . . . . . . . . . . . . .  89
                                     11.1.3  Register   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  89
                                     11.1.4  Acceptance of Assignment and Assumption  . . . . . . . . . . . . . . . .  90
                                     11.1.5  Federal Reserve Bank   . . . . . . . . . . . . . . . . . . . . . . . . .  90
                                     11.1.6  Further Assurances   . . . . . . . . . . . . . . . . . . . . . . . . . .  90

                             11.2    Credit Participants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  90
                             11.3    Replacement of Bank  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  91
                             11.4    Sale of a Certain Participation  . . . . . . . . . . . . . . . . . . . . . . . .  92

         ARTICLE XII         MISCELLANEOUS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  92

                             12.1    Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  92
                             12.2    Place of Payment   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  93
                             12.3    Survival of Agreements   . . . . . . . . . . . . . . . . . . . . . . . . . . . .  94
                             12.4    Parties in Interest  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  94
                             12.5    Governing Law and Jurisdiction   . . . . . . . . . . . . . . . . . . . . . . . .  94
                             12.6    SUBMISSION TO JURISDICTION   . . . . . . . . . . . . . . . . . . . . . . . . . .  94
                             12.7    Maximum Interest Rate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  94
                             12.8    No Waiver; Cumulative Remedies   . . . . . . . . . . . . . . . . . . . . . . . .  94
                             12.9    Costs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
                             12.10   WAIVER OF JURY   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
                             12.11   Full Agreement   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
                             12.12   Headings   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
                             12.13   Severability   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
                             12.14   Exceptions to Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
                             12.15   Conflict with Security Documents   . . . . . . . . . . . . . . . . . . . . . . .  96
                             12.16   Confidentiality  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  96
                             12.17   Counterparts   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  96
</TABLE>




                                     (vi)
<PAGE>   8
                                CREDIT AGREEMENT


         THIS CREDIT AGREEMENT, dated as of June 25, 1996 (this "Agreement"),
is entered into between and among HERITAGE OPERATING, L.P., a Delaware limited
partnership (the "Borrower") and THE FIRST NATIONAL BANK OF BOSTON ("Bank of
Boston") and BANK OF OKLAHOMA, NATIONAL ASSOCIATION ("BOk") (Bank of Boston and
BOk, together with each other Person that becomes a Bank pursuant to Section 11
collectively referred to herein as the "Banks"), Bank of Boston, as
administrative and structuring agent for the Banks (in such capacity the
"Administrative Agent") and BOk, as documentation agent for the Banks (in such
capacity, the "Documentation Agent").


                                   ARTICLE I

                      DEFINITIONS; ACCOUNTING PRINCIPALS,
                      TERMS AND DEFINITIONS; CONSTRUCTION

         1.1     Definitions.  Capitalized terms are used in this Agreement
with the specific meanings defined below in this Section 1.

         "Acquired Debt" means with respect to any specified Person, (i)
Indebtedness of any other Person existing at the time such other Person merged
with or into or became a Subsidiary of such specified Person, including
Indebtedness incurred in connection with, or in contemplation of, such other
Person merging with or into or becoming a Subsidiary of such specified Person
and (ii) Indebtedness encumbering any asset acquired by such specified Person.

         "Acquisition Conversion Date" is defined in Section 2.1.1.

         "Acquisition/Capex Due Diligence Package" is defined in Section 2.1.3.

         "Acquisition Facility" means the agreement of the Banks herein to make
the Acquisition Loan.

         "Acquisition Loan Account" is defined in Section 2.1.4.

         "Acquisition Loan" is defined in Section 2.1.4.

         "Acquisition Notes" is defined in Section 2.1.4.

         "Additional Parity Debt" means Indebtedness of the Borrower that is
incurred with the consent of the Requisite Percentage of the Banks and that
constitutes "Additional Parity Debt" as defined in the Note Purchase Agreement
and the Intercreditor Agreement.
<PAGE>   9
         "Administrative Agent" means Bank of Boston in its capacity as
administrative and structuring agent for the Banks hereunder, as well as its
successors and assigns in such capacity pursuant to Section 10.7.

         "Administrative Agent Fee Letter" is defined in Section 3.11.

         "Affected Bank" is defined in Section 11.3.

         "Affiliate" means, with respect to any Person any other Person
directly or indirectly controlling, controlled by, or under direct or indirect
common control with, such Person, except a  Subsidiary of such Person.  A
Person shall be deemed to control a corporation if such Person (i) possesses,
directly or indirectly, the power to direct or cause the direction of the
management and policies of such corporation, whether through the ownership of
voting securities, by contract or otherwise or (ii) owns at least 5% of the
Voting Stock of a corporation.  As applied to the Borrower, "Affiliate"
includes the General Partner and the Master Partnership.

         "Agents" means collectively the Administrative Agent and the
Documentation Agent.

         "Agreement" means this Agreement as from time to time amended,
modified and in effect.

         "Allocable Proceeds" means, with respect to Excess Sale Proceeds or
Excess Taking Proceeds, as the case may be, to be applied on any date pursuant
to Sections 4.2.3(i) and 4.2.3(ii), the principal amount thereof available to
prepay the Acquisition Notes determined by allocating such Excess Sale Proceeds
or Excess Taking Proceeds, as the case may be, pro rata among the holders of
all Acquisition Notes, the Private Placement Notes and other Parity Debt (other
than Indebtedness permitted by Section 7B.2(ii)), if any, according to the
aggregate principal amounts of the Acquisition Notes, the Private Placement
Notes and such other Parity Debt outstanding on the date the applicable
prepayment is to be made in accordance with Sections 4.2.3(i) and 4.2.3(ii).

         "Annual Clean-Up" is defined in Section 2.2.2.

         "Applicable Commitment Fee Percentage" means, with respect to any
Margin Period, the applicable percentage set forth below:

         (i)     during the period from the Closing Date to the Financial
Statement Delivery Date for the fiscal quarter ending August 31, 1996, .50%;
and

         (ii)    thereafter, if the Leverage Ratio on the Financial Statement
Delivery Date beginning such Margin Period was equal to or greater than 3.75 to
1, .50% or if the Leverage Ratio on the Financial Statement Delivery Date
beginning such Margin Period was less than 3.75 to 1, .375%.

         Notwithstanding the foregoing, if any of the financial statements
required pursuant to Section 7A.1(i) are not delivered within the time periods
specified in Section 7A.1(i), the Applicable Commitment Fee Percentage shall be
 .50% until the date such statements are delivered.





                                      -3-
<PAGE>   10
         "Applicable Margin".  With respect to any Eurodollar Loan or with
respect to any Base Rate Loan, the rate of interest per annum determined as set
forth below:

         (a)     during the initial Margin Period from the Closing Date to the
Financial Statement Delivery Date for the fiscal quarter of the Borrower ending
August 31, 1996, the Applicable Margin will be 2.125% for Eurodollar Loans and
 .50% for Base Rate Loans; and

         (b)     for any Margin Period thereafter,

                 (i)      if the Leverage Ratio on the Financial Statement
         Delivery Date commencing such Margin Period was less than 3.75 to 1,
         the Applicable Margin will be 1.25% for Eurodollar Loans and zero for
         Base Rate Loans;

                 (ii)     if the Leverage Ratio on the Financial Statement
         Delivery Date commencing such Margin Period was equal to or greater
         than 3.75 to 1 but less than 4.00 to 1, the Applicable Margin will be
         1.375% for Eurodollar Loans and zero for Base Rate Loans;

                 (iii)    if the Leverage Ratio on the Financial Statement
         Delivery Date commencing such Margin Period was equal to or greater
         than 4.00 to 1 but less than 4.50 to 1, the Applicable Margin will be
         1.625% of for Eurodollar Loans and .25% for Base Rate Loans;

                 (iv)     if the Leverage Ratio on the Financial Statement
         Delivery Date commencing such Margin Period was equal to or greater
         than 4.50 to 1 but less than 4.75 to 1, the Applicable Margin will be
         1.875% for Eurodollar Loans and .375% for Base Rate Loans; and

                 (v)      if the Leverage Ratio on the Financial Statement
         Delivery Date commencing such Margin Period was equal to or greater
         than 4.75 to 1, the Applicable Margin will be 2.125% for Eurodollar
         Loans and .50% for Base Rate Loans.

         Notwithstanding the foregoing, if any of the financial statements
required pursuant to Section 7A.1(i) are not delivered within the time periods
specified in Section 7A.1(i), the Applicable Margin shall be the Applicable
Margin set forth in clause (i) above until the date such statements are
delivered.

         "Applicable Rate" means, at any date, the sum of:

         (i)     (a)      with respect to each Eurodollar Loan, the sum of the
Applicable Margin in effect on such date plus the Eurodollar Rate relating to
such Eurodollar Loan;

                 (b)      with respect to each Base Rate Loan, the sum of the
         Applicable Margin in effect on such date plus the Base Rate; and

         (ii)    an additional two percentage points (2%) effective on the day
the Administrative Agent notifies the Borrower that the interest rates
hereunder are increasing as a result of the





                                      -4-
<PAGE>   11
occurrence and continuance of an Event of Default until such time as (A) such
Event of Default is no longer continuing or (B) such Event of Default is deemed
no longer to exist, in each case pursuant to Section 9.3.

         "Asset Acquisition" means (i) an Investment by the Borrower or any
Subsidiary of the Borrower in any other Person pursuant to which such Person
shall become a Subsidiary of the Borrower or shall be merged with or into the
Borrower or any Subsidiary of the Borrower, (ii) the acquisition by the
Borrower or any Subsidiary of the Borrower of the assets of any Person which
constitute all or substantially all of the assets of such Person or (iii) the
acquisition by the Borrower or any  Subsidiary of the Borrower of any division
or line of business of any Person (other than a Subsidiary of the Borrower).

         "Asset Sale" is defined in Section 7B.7(iii).

         "Assets" is defined in the second opening paragraph of the Note
Purchase Agreement, as in effect on the date hereof.

         "Assignment" is defined in Section 11.1.1.

         "Assignment and Acceptance" is defined in Section 11.1.1.

         "Attributable Debt" means, with respect to any Sale and Lease-Back
Transaction not involving a Capitalized Lease Obligation, as of any date of
determination, the total obligation (discounted to present value at the rate of
interest implicit in the lease included in such transaction) of the lessee for
rental payments (other than accounts required to be paid on account of property
taxes, maintenance, repairs, insurance, assessments, utilities, operating and
labor costs and other items which do not constitute payments for property
rights) during the remaining portion of the term (including extensions which
are at the sole option of the lessor) of the lease included in such transaction
(in the case of any lease which is terminable by the lessee upon the payment of
a penalty, such rental obligation shall also include the amount of such
penalty, but no rent shall be considered as required to be paid under such
lease subsequent to the first date upon which it may be so terminated).

         "Available Cash" means, with respect to any fiscal quarter of the
Borrower: (i) the sum of (a) all cash and cash equivalents of the Borrower and
its Subsidiaries on hand at the end of such quarter and (b) all additional cash
and cash equivalents of the Borrower and its Subsidiaries on hand on the date
of determination of Available Cash with respect to such quarter resulting from
borrowings for working capital purposes made subsequent to the end of such
quarter, less (ii) the amount of any cash reserves that is necessary or
appropriate in the reasonable discretion of the General Partner to (a) provide
for the proper conduct of the business of the Borrower and its Subsidiaries
(including reserves for future capital expenditures) subsequent to such
quarter, (b) comply with applicable law or any loan agreement, security
agreement, mortgage, debt instrument or other agreement or obligation to which
the Borrower or any Subsidiary is a party or by which it is bound or its assets
are subject (including the Loan Documents) and (c) provide funds for





                                      -5-
<PAGE>   12
distributions to partners of the Master Partnership and the General Partner in
respect of any one or more of the next four quarters; provided that the General
Partner need not establish cash reserves pursuant to clause (c) if the effect
of such reserves would be that the Master Partnership is unable to distribute
the Minimum Quarterly Distribution (as defined in the Agreement of Limited
Partnership of the Master Partnership) on all Common Units with respect to such
quarter; and provided, further, that disbursements made by the Borrower or a
Subsidiary of the Borrower or cash reserves established, increased or reduced
after the end of such quarter but on or before the date of determination of
Available Cash with respect to such quarter shall be deemed to have been made,
established, increased or reduced for purposes of determining Available Cash,
within such quarter if the General Partner so determines.  In addition, without
limiting the foregoing, Available Cash for any fiscal quarter shall reflect
reserves equal to (A) 50% of the interest projected to be paid on the Private
Placement Notes in the next succeeding fiscal quarter plus (B) beginning with a
date three fiscal quarters before a scheduled principal payment date on the
Private Placement Notes, 25% of the aggregate principal amount thereof due on
any such payment date in the third succeeding fiscal quarter, 50% of the
aggregate principal amount due on any such payment date in the second
succeeding fiscal quarter and 75% of the aggregate principal amount due on any
quarterly payment date in the next succeeding fiscal quarter, plus (C) the
Unused Proceeds Reserve as of the date of determination, provided that the
foregoing reserves for amounts to be paid on the Private Placement Notes shall
be reduced by the aggregate amount of advances available to the Borrower from
responsible financial institutions under binding irrevocable (x) credit or
financing commitments (which are subject to no conditions which the Borrower is
unable to meet) including this Agreement and (y) letters of credit (which are
subject to no conditions which the Borrower is unable to meet) in each case to
be used to refinance such amounts, to the extent such amounts could be borrowed
and remain outstanding under Sections 7B.2 and 7B.1.

         "Bank" means each of the Persons listed as Banks on the signature page
hereto, including each of Bank of Boston and BOk in its capacity as a Bank and
such other Persons who may from time to time own a Percentage Interest in the
Credit Obligations, but the term "Bank" shall not include any Credit
Participant.





                                      -6-
<PAGE>   13
         "Bank of Boston" has the meaning specified in the introduction to this
Agreement.

         "BOk" has the meaning specified in the introduction to this Agreement.

         "Bank Legal Requirement" means any present or future requirement
imposed upon any of the Banks or the Borrower and its Subsidiaries by any law,
statute, rule, regulation, directive, order, decree, guideline (or any
interpretation thereof by courts or of administrative bodies) of the United
States of America, or any jurisdiction in which any Eurodollar Office is
located or any state or political subdivision of any of the foregoing, or by
any board, governmental or administrative agency, central bank or monetary
authority of the United States of America, any jurisdiction in which any
Eurodollar Office is located, or any political subdivision of any of the
foregoing.  any such requirement imposed on any of the Banks not having the
force of law shall be deemed to be a Bank Legal Requirement if such Bank
reasonably believes that compliance therewith is in the best interest of such
Bank.

         "Banking Day" means any day other than Saturday, Sunday or a day on
which banks in Boston, Massachusetts or Tulsa, Oklahoma are authorized or
required by law or other governmental action to close and, if such term is used
with reference to a Eurodollar Pricing Option, any day on which dealings are
effected in the Eurodollars in question by first-class banks in the inter-bank
Eurodollar markets in New York, New York.

         "Bankruptcy Law" is defined in clause (viii) of Section 9.1.

         "Base Rate" means, on any date, the greater (i) the rate of interest
announced by Bank of Boston at the Boston Office as its Base Rate or (ii) the
sum of 1/2% plus the Federal Funds Rate.

         "Base Rate Loan" means each portion of the Loan bearing interest
determined by reference to the Base Rate.

         "Bi-State" means Heritage-Bi State Corp. a Delaware corporation.

         "Boston Office" means the principal banking office of Bank of Boston
in Boston, Massachusetts.

         "Business" means the wholesale and retail sale, storage and
distribution of propane gas, providing repair, installation and maintenance
services for propane heating systems and the sale and distribution of propane -
related supplies and equipment, including appliances.

         "Capital Stock" means, with respect to any Person, any and all shares,
units representing interests, participations, rights in or other equivalents
(however designated) of such Person's capital stock, including, with respect to
partnerships, partnership interests (whether general or limited) and any other
interest or participation that confers upon a Person the right to receive a
share of the profits and losses of, or distributions of assets of, such
partnership, and any rights (other than debt securities





                                      -7-
<PAGE>   14
convertible into capital stock), warrants or options exchangeable for or
convertible into such capital stock.

         "Capitalized Lease Obligation" means any rental obligation which under
GAAP would be required to be capitalized on the books of the Borrower or any of
its Subsidiaries, taken at the amount thereof accounted for as indebtedness
(net of interest expense) in accordance with such principles.

         "Cash Equivalents" is defined in Section 7B.5(iii).

         "CERCLA" shall mean the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, 42 U.S.C.  Section  9601 et seq., as
the same may be amended from time to time.

         "Certificates and Stock Powers" is defined in Section 6.1(vi).

         "Change of Control" means the acquisition by any Person or group of
related persons (as such terms are defined in the Exchange Act) (other than the
Current Management or group of related persons (as so defined) including the
Current Management) of beneficial ownership of more than 50% of the Units.

         "Closing Date" means the Initial Closing Date, the Acquisition
Conversion Date and each other date on which any extension of credit is made
pursuant to Section 2.1, 2.2 or 2.3.

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Collateral" is defined in the Security Agreement, provided, however,
that Collateral shall not include for any purpose under this Agreement or any
other Loan  Document any property subject to a Lien incurred pursuant to clause
(i), (vii) or (viii) of Section 7B.3 or any renewals of any such Lien pursuant
to clause (xiv) of Section 7B.3 unless the Indebtedness secured by such Lien
shall have been paid or discharged.

         "Collateral Agent" shall mean Wilmington Trust Company, a Delaware
trust company, in its capacity as collateral agent under the Intercreditor and
Agency Agreement and its successors and assigns in such capacity under Section
11 thereof.

         "Commission" means the United States Securities and Exchange
Commission.

         "Commitments" means, with respect to any Bank, such Bank's obligations
to extend the credit facilities contemplated by Section 2.  The original
Commitments are set forth in Section 10.1 and the current Commitments are
recorded from time to time in the Register.

         "Common Units" is defined in the second opening paragraph of the Note
Purchase Agreement in effect on the date hereof.





                                      -8-
<PAGE>   15
         "Consolidated Debt Service" means, as of any date of determination,
the total amount payable by the Borrower and its Subsidiaries on a consolidated
basis during the four consecutive calendar quarters next succeeding the date of
determination, in respect of scheduled principal and interest payments with
respect to Indebtedness of the Borrower and its Subsidiaries outstanding on
such date of determination, after giving effect to any Indebtedness proposed on
such date to be incurred and to the substantially concurrent repayment of any
other Indebtedness (a) including actual payments under Capitalized Lease
Obligations, (b) assuming, in the case of Indebtedness (other than Indebtedness
referred to in clause (c) below) bearing interest at fluctuating interest rates
which cannot be determined in advance, that the rate actually in effect on such
date will remain in effect throughout such period, (c) including only actual
interest (but not principal) payments associated with the Indebtedness incurred
pursuant to Section 7B.2(ii) and 7B.2(v) during the most recent four
consecutive calendar quarters and (d) treating the principal amount of all
Indebtedness outstanding as of such date of determination under a revolving
credit or similar agreement (other than the Indebtedness incurred pursuant to
Section 7B.2(ii) and Section 7B.2(v)) as maturing and becoming due and payable
on the scheduled maturity date or dates thereof (including the maturity of any
payment required by any commitment reduction or similar amortization
provision), without regard to any provision permitting such maturity date to be
extended (except for such extensions as may be made in the sole discretion of
the borrower thereunder and without any conditions that remain to be fulfilled
by the borrower or waived by the lender thereunder).  See Section 1.2(i).

         "Consolidated EBITDA" means, as of any date of determination for any
applicable period, (1) the sum of, without duplication, the amounts for such
period, taken as a single accounting period, of (a) Consolidated Net Income and
(b) to the extent deducted in the determination of Consolidated Net Income,
after excluding amounts attributable to minority interests in Subsidiaries and
without duplication, (i) Consolidated Non-Cash Charges, (ii) Consolidated
Interest Expense and (iii) Consolidated Income Tax Expense less (2) any
non-cash items increasing Consolidated Net Income for such period to the extent
that such items constitute reversals of a Consolidated Non-Cash Charge for a
previous period and which were included in the computation of Consolidated
EBITDA for such previous period pursuant to the provisions of the preceding
clause (1).  Consolidated EBITDA shall be calculated after giving effect, on a
pro forma basis and in accordance with GAAP, to, without duplication, any Asset
Sales or Asset Acquisitions (including without limitation any Asset Acquisition
giving rise to the need to make such calculation as a result of the Borrower or
one of its Subsidiaries  incurring, assuming or otherwise being liable for
Acquired Debt) occurring during the period commencing on the first day of such
period to and including the date of the transaction (the "Reference Period"),
as if such Asset Sale or Asset Acquisition occurred on the first day of the
Reference Period; provided, however, that Consolidated EBITDA generated by an
acquired business or asset shall be determined by the actual gross profit
(revenues minus cost of goods sold) of such acquired business or asset during
the immediately preceding four full fiscal quarters in the Reference Period
minus the pro forma expenses that would have been incurred by the Borrower and
its Subsidiaries in the operation of such acquired business or asset during
such period computed on the basis of personnel expenses for employees retained
or to be retained by the Borrower and its Subsidiaries in the operation of such
acquired business or asset and non-personnel costs and expenses incurred by
the Borrower and its Subsidiaries in the operation of the Borrower's business
at similarly situated facilities of the Borrower or any of its Subsidiaries (as
determined in good faith





                                      -9-
<PAGE>   16
by the General Partner determined (a) on the basis of 100% that amount for the
period of upon reasonable assumptions).  As used herein, but only for purposes
of Sections 7B.1(i) and (ii), Consolidated EBITDA shall be determined (a) on
the basis of 100% of that amount for the period of the four most recent fiscal
quarters ending on or prior to the date of determination or (b) 50% of that
amount for the period of the eight most recent fiscal quarters ending on or
prior to the date of determination, whichever is higher.  For all other
purposes hereof, Consolidated EBITDA shall be based upon that amount determined
over the four most recent fiscal quarters ending on or prior to the date of
determination (or, as the case may be, for which financial statements have been
or are required to be delivered to the Banks pursuant to Section  7B.1(i) and
(ii)).  See Section 1.2(i).

         "Consolidated Funded Indebtedness" means, as of any date of
determination, the aggregate amount of Indebtedness of the Borrower and its
Subsidiaries outstanding on that date and maturing in more than 12 months,
including the Private Placement Notes and borrowings under the Acquisition
Facility (including current maturities of any such Indebtedness).
Notwithstanding anything to the contrary contained herein, Consolidated Funded
Indebtedness shall not include borrowings under the Working Capital Facility to
the extent permitted under the Note Purchase Agreement.

         "Consolidated Income Tax Expense" means, with respect to the Borrower
and its Subsidiaries, for any period, the provision for federal, state, local
and foreign income taxes of the Borrower and its Subsidiaries for such period
as determined on a consolidated basis in accordance with GAAP.  See Section
1.2(i).

         "Consolidated Interest Expense" means as of any date of determination
for any applicable period, without duplication, the sum of (i) the interest
expense of the Borrower and its Subsidiaries for such period as determined on a
consolidated basis in accordance with GAAP, including without limitation (a)
any amortization of debt discount, (b) the net cost under Interest Rate
Agreements, (c) the interest portion of any deferred payment obligation, (d)
all commissions, discounts and other fees and charges owed with respect to
letters of credit and bankers' acceptance financing and (e) all accrued
interest and (ii) the interest component of Capitalized Lease Obligations paid,
accrued or scheduled to be paid or accrued by the Borrower and its Subsidiaries
during such period as determined on a consolidated basis in accordance with
GAAP.  In computing Consolidated Interest Expense for any period prior to the
end of the first four fiscal quarters ending after the Closing Date,
Consolidated Interest Expense of the Borrower and its Subsidiaries shall be
determined on the basis of interest accruing at a rate equal to the average
interest rate payable on the date of determination with respect to Indebtedness
outstanding from time to time under the Notes, the Acquisition Facility and the
Working Capital Facility, rather than the rates of interest applicable to the
interest expense of the Indebtedness refinanced thereby.  In computing
Consolidated Interest Expense for purposes of clause (ii) of Section 7B.1, the
applicable period for the determination thereof shall be the four most recent
fiscal quarters ending on or prior to the date of determination.  See Section
1.2(i).

         "Consolidated Net Income" means the net income of the Borrower and its
Subsidiaries, as determined on a consolidated basis in accordance with GAAP and
after provision for minority interests and as adjusted to exclude (i) net
after-tax extraordinary gains or losses, (ii) net after-tax





                                      -10-
<PAGE>   17
gains or losses attributable to Asset Sales, (iii) the net income or loss of
any Person which is not a  Subsidiary of the Borrower and which is accounted
for by the equity method of accounting, provided that Consolidated Net Income
shall include the amount of cash dividends or distributions actually paid to
the Borrower or any  Subsidiary of the Borrower, (iv) the net income or loss
prior to the date of acquisition of any Person combined with the Borrower or
any  Subsidiary of the Borrower in a pooling of interest, (v) the net income of
any  Subsidiary of the Borrower to the extent that dividends or distributions
of such net income are not at the date of determination permitted by the terms
of its charter or any agreement, instrument, judgment, decree, order, statute,
rule or other regulation and (vi) the cumulative effect of any changes in
accounting principles.  See Section 1.2(i).

         "Consolidated Net Tangible Assets" means, as of any date of
determination, the Total Assets of the Borrower and its Subsidiaries, minus the
net book value of all assets of the Borrower and its Subsidiaries (after
deducting any reserves applicable thereto) which would be shown as intangible
assets on a consolidated balance sheet of the Borrower and its Subsidiaries as
of such time prepared in accordance with GAAP.  See Section 1.2(i).

         "Consolidated Net Worth" means, with respect to any Person, at any
date of determination, the total partners' capital (in the case of a
partnership) or stockholders' equity (in the case of a corporation) of such
Person at such date, as would be shown on a consolidated balance sheet of such
Person and its Subsidiaries, if any,  prepared in accordance with GAAP.  See
Section 1.2(i).

         "Consolidated Non-Cash Charges" means with respect to the Borrower and
its Subsidiaries, for any period, the aggregate depreciation and amortization,
in each case reducing Consolidated Net Income of the Borrower and its
Subsidiaries for such period, determined on a consolidated basis in accordance
with GAAP.  See Section 1.2(i).

         "Consolidated Pro Forma Maximum Debt Service" means, as of any date of
determination, the maximum amount payable by the Borrower and its Subsidiaries
on a consolidated basis during all periods of four consecutive calendar
quarters, commencing with the calendar quarter in which such date of
determination occurs and ending June 30, 2011, in respect of scheduled
principal and interest payments with respect to all Indebtedness of the
Borrower and its Subsidiaries outstanding on such date of determination, after
giving effect to any Indebtedness proposed on such date to be incurred and to
the substantially concurrent repayment of any other Indebtedness (a) including
all payments under Capitalized Lease Obligations, (b) assuming, in the case of
Indebtedness (other than Indebtedness referred to in clause (c) below) bearing
interest at fluctuating interest rates which cannot be determined in advance,
that the rate actually in effect on such date will remain in effect throughout
such period, (c) including only actual interest (but not principal) payments
associated with the Indebtedness incurred pursuant to Section 6B(ii) during the
most recent four consecutive calendar quarters and (d) treating the principal
amount of all Indebtedness outstanding as of such date of determination under a
revolving credit or similar agreement (other than the Indebtedness incurred
pursuant to Section 6B(ii)) as maturing and becoming due and payable on the
scheduled maturity date or dates thereof (including the maturity of any payment
required by any commitment reduction or similar amortization provision),
without regard to any provision permitting such maturity date to be extended
(except for such extensions as may be made in the sole discretion of





                                      -11-
<PAGE>   18
the borrower thereunder and without any conditions that remain to be fulfilled
by the borrower or waived by the lender thereunder).  See Section 1.2(i).

         "Consolidated Tangible Net Worth" means, with respect to any Person,
at any date of determination, the then Consolidated Net Worth of Person minus
the net book value of all assets of such Person and its Subsidiaries, if any,
(after deducting any reserves applicable thereto), which would be shown as
intangible assets on a consolidated balance sheet of such Person and its
Subsidiaries, if any, as of such time prepared in accordance with GAAP.  See
Section 1.2(i).

         "Contribution Agreement" shall mean the Contribution, Conveyance and
Assumption Agreement, dated as of June 28, 1996, among Heritage, the Borrower
and the other signatories thereto, as the same may from time to time be
amended, supplemented or otherwise modified in accordance with the terms
thereof and hereof.

         "Control Event" means:

                 (i)      the execution of any written agreement to which the
Borrower or any Affiliate of the Borrower is a party which could reasonably be
expected to result in a Change of Control.

                 (ii)     the commencement (as such term is used in Rule
14d-2(a) under the Exchange Act as in effect on the date of the Closing) of a
tender offer by any person (as such term is used in Section 13(d) and Section
14(d)(2) of the Exchange Act as in effect on the date of the Closing) or
related person constituting a group (as such term issued in Rule 13d-5 under
the Exchange Act as in effect on the date of the Closing) for units which would
result in such person or group owning, directly or indirectly, more than 50% of
the outstanding Units.

         "Conveyance Agreements" shall mean (a) the Contribution Agreement and
(b) each of the individual bills of sale and other conveyance documents
delivered to the Borrower pursuant to the Contribution Agreement in each case
as the same may from time to time be amended, supplemented or otherwise
modified in accordance with the terms thereof and hereof.

         "Credit Obligations" means all present and future liabilities,
obligations and Indebtedness of the Borrower or any of its Subsidiaries owing
to the Administrative Agent, the Documentation Agent or any Bank under or in
connection with this Agreement or any other Loan Document, including
obligations in respect of principal, interest, reimbursement obligations under
Letters of Credit and Interest Rate Agreements provided by a Bank (or an
Affiliate of a Bank), commitment fees, Letter of Credit fees, amounts provided
for in Sections 3.2.4, 3.5, 3.6, 3.7, 3.8, 3.10, 3.11 and 3.12 and any other
fees, charges, indemnities and expenses from time to time owing hereunder or
under any other Loan Documents (whether accruing before or after the
commencement of proceedings under any Bankruptcy Law).

         "Credit Participant" is defined in Section 11.2.





                                      -12-
<PAGE>   19
         "Current Management" means the individual executive officers of the
General Partner named as such in the Registration Statement, together with the
heirs of, and trusts for the benefit of family members controlled by, any such
executive officer.

         "Disbursement Account" is defined in Section 2.2.3.

         "Documentation Agent" means Bank of Oklahoma, National Association in
its capacity as documentation agent for the Banks hereunder.

         "Documentation Agent Fee Letter" is defined in Section 3.12.

         "Environmental Laws" means all applicable federal, state, local and
foreign laws, rules or regulations as amended from time to time, relating to
emissions, discharges, releases, threatened releases, removal, remediation or
abatement of pollutants, contaminants, chemicals or industrial, toxic or
hazardous substances or wastes into or in the environment (including without
limitation air, surface water, ground water or land), or otherwise used in
connection with the manufacture, processing, distribution, use, treatment,
storage, disposal, transport or handling of pollutants, contaminants, toxic or
hazardous substances or wastes, as defined under such applicable laws.

         "Equity Interest" means, with respect to any Person, any capital stock
issued by such Person, regardless of class or designation, or any limited or
general partnership interest in such Person, regardless of designation, and all
warrants, options, purchase rights, conversion or exchange rights, voting
rights, calls or claims of any character with respect thereto.

         "Equity Repurchase" is defined in Section 8.12.

         "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended.

         "ERISA Affiliate" means any trade or business (whether or not
incorporated) that, together with the Borrower, is treated as a single employer
under Section 414(b) or (c) of the Code, or, solely for purposes of Section 302
of ERISA and Section 412 of the Code, is treated as a single employer under
Section 414 of the Code.

         "ERISA Event" means (i) any "reportable event", as defined in Section
4043 of ERISA or the regulations issued thereunder, with respect to a Plan;
(ii) the adoption of any amendment to a Plan that would require the provision
of security pursuant to Section 401(a)(29) of the Code or Section 307 of ERISA;
(iii) the existence with respect to any Plan of an "accumulated funding
deficiency" (as defined in Section 412 of the Code or Section 302 of ERISA),
whether or not waived; (iv) the filing pursuant to Section 412(d) of the Code
or Section 303(d) of ERISA of an application for a waiver of the minimum
funding standard with respect to any Plan; (v) the incurrence of any liability
under Title IV of ERISA with respect to the termination of any Plan or the
withdrawal or partial withdrawal of the Borrower or any of its ERISA Affiliates
from any Plan or Multiemployer Plan; (vi) the receipt by the Borrower or any
ERISA Affiliate from the PBGC or a plan administrator of any notice relating to
the intention to terminate any Plan or Plans or to





                                      -13-
<PAGE>   20
appoint a trustee to administer any Plan; (vii) the receipt by the Borrower or
any ERISA Affiliate of any notice concerning the imposition of Withdrawal
Liability or a determination that a Multiemployer Plan is, or is expected to
be, insolvent or in reorganization, within the meaning of Title IV of ERISA;
and (viii) the occurrence of a "prohibited transaction" with respect to which
the Borrower or any of its Subsidiaries is a "disqualified person" (within the
meaning of Section 4975 of the Code) and with respect to which the Borrower or
such Subsidiary would be liable for the payment of an excise tax.

         "Eurodollars" means, with respect to any Bank, deposits of United
States Funds in a non-United States office or an international banking facility
of such Bank.

         "Eurodollar Basic Rate" means, for any Eurodollar Interest Period, the
rate of interest at which Eurodollar deposits in an amount comparable to the
Percentage Interest of Bank of Boston in the portion of a Loan as to which a
Eurodollar Pricing Option has been elected and which have a term corresponding
to such Eurodollar Interest Period are offered to Bank of Boston by first class
banks in the inter-bank Eurodollar market for delivery in immediately available
funds at a Eurodollar Office on the first day of such Eurodollar Interest
Period as determined by Bank of Boston at approximately 10:00 a.m. (Boston
time) two Banking Days prior to the date upon which such Eurodollar Interest
Period is to commence (which determination by Bank of Boston shall, in the
absence of manifest error, be conclusive) and as furnished promptly thereafter
by Bank of Boston to the Administrative Agent.

         "Eurodollar Interest Period" means any period, selected as provided in
Section 3.2.1, of one or three months, commencing on any Banking Day and ending
on the corresponding date in the subsequent calendar month so indicated (or, if
such subsequent calendar month has no corresponding date, on the last day of
such subsequent calendar month); provided, however, that subject to Section
3.2.3, if any Eurodollar Interest Period so selected would otherwise begin or
end on a date which is not a Banking Day, such Eurodollar Interest Period shall
instead begin or end, as the case may be, on the immediately preceding or
succeeding Banking Day as determined by the Administrative Agent in accordance
with the then current banking practice in the inter-bank Eurodollar market with
respect to Eurodollar deposits at the applicable Eurodollar Office, which
determination by the Administrative Agent shall, in the absence of manifest
error, be conclusive.

         "Eurodollar Loan" means each portion of the Loan bearing interest
determined by reference to the Eurodollar Rate.

         "Eurodollar Office" means such non-United States office or
international banking facility of any Bank as the Bank may from time to time
select.

         "Eurodollar Pricing Options" means the options granted pursuant to
Section 3.2.1 to have the interest on any portion of a Loan computed on the
basis of a Eurodollar Rate.

         "Eurodollar Rate" for any Eurodollar Interest Period means the rate,
rounded upward to the nearest 1/100%, obtained by dividing (a) the Eurodollar
Basic Rate for such Eurodollar Interest





                                      -14-
<PAGE>   21
Period by (b) an amount equal to 1 minus the Eurodollar Reserve Rate; provided,
however, that if at any time during such Eurodollar Interest Period the
Eurodollar Reserve Rate applicable to any outstanding Eurodollar Pricing Option
changes, the Eurodollar Rate for such Eurodollar Interest Period shall
automatically be adjusted to reflect such change, effective as of the date of
such change.

         "Eurodollar Reserve Rate" means the stated maximum rate (expressed as
a decimal) of all reserves (including any basic, supplemental, marginal or
emergency reserve or any reserve asset), if any, as from time to time in
effect, required by any Bank Legal Requirement to be maintained by any Bank
against (a) "Eurocurrency liabilities" as specified in Regulation D of the
Board of Governors of the Federal Reserve System applicable to Eurodollar
Pricing Options, (b) any other category of liabilities that includes Eurodollar
deposits by reference to which the interest rate on portions of a Loan subject
to Eurodollar Pricing Options is determined, (c) the principal amount of or
interest on any portion of the Loan subject to a Eurodollar Pricing Option or
(d) any other category of extensions of credit, or other assets, that includes
loan subject to a Eurodollar Pricing Option by a non-United States office of
any of the Banks to United States residents, in each case without the benefits
of credits for prorations, exceptions or offsets that may be available to a
Lender.

         "Event of Default" means any of the events specified in Section 9.1,
provided that there has been satisfied any requirement in connection with such
event for the giving of notice, or the lapse of time, or the happening of any
further condition, event or act, and "Default" shall mean any of such events,
whether or not any such requirement has been satisfied.

         "Excess Proceeds" is defined in Section 4.2.4.

         "Excess Sale Proceeds" is defined in Section 7B.7(iii)(c)(II).

         "Excess Taking Proceeds" is defined in Section 4.2.3(ii).

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Federal Funds Rate" means, for any day, the rate equal to the
weighted average (rounded upward to the nearest 1/8%) of the rates on overnight
federal funds transactions with members of the Federal Reserve System arranged
by federal funds brokers, (i) as such weighted average is published for such
day (or, if such day is not a Banking Day, for the immediately preceding
Banking Day) by the Federal Reserve Bank of New York or (ii) if such rate is
not so published for such Banking Day, as determined by the Administrative
Agent using any reasonable means of determination.  Each determination by the
Administrative Agent of the Federal Funds Rate shall, in the absence of
manifest error, be conclusive.

         "Final Maturity Date" means (i) with respect to the Working Capital
Loan, June 30, 1999, and (ii) with respect to the Acquisition Loan, June 30,
2001.

         "Financial Statement Delivery Date" means each date on which financial
statements are to be delivered pursuant to Section 7A.1(i).





                                      -15-
<PAGE>   22
         "Financing Statements" shall have the meaning specified in Section
6.1(vi).

         "Fixed Charges" shall mean scheduled principal and interest payments
and payments due under Capitalized Lease Obligations.

         "Foreign Trade Regulations" means (i) any act that prohibits or
restricts, or empowers the President or any executive agency of the United
States of America to prohibit or restrict, exports to or financial transactions
with any foreign country or foreign national, (ii) the regulations with respect
to certain prohibited foreign trade transactions set forth at 22 C.F.R. parts
120-130 and 31 C.F.R. Part 500 and (iii) any order, regulation, ruling,
interpretation, direction, instruction or notice relating to any of the
foregoing.

         "Funding Liability" means (a) any Eurodollar deposit which was used
(or deemed by Section 3.2.6 to have been used) to fund any portion of a Loan
subject to a Eurodollar Pricing Option, and (b) any portion of a Loan subject
to a Eurodollar Pricing Option funded (or deemed by Section 3.2.6 to have been
funded) with the proceeds of any such Eurodollar deposit.

         "GAAP" is defined in Section 1.2(i).

         "General Partner" means Heritage in its capacity as the general
partner of the Borrower.

         "Governmental Authority" means any governmental agency, authority,
instrumentality or regulatory body, other than a court or other tribunal, in
each case whether federal, state, local or foreign.

         "Guaranty" means, with respect to any Person, any direct or indirect
liability, contingent or otherwise, of such Person with respect to any
Indebtedness of another, including, without limitation, any such obligation
directly or indirectly guaranteed, endorsed (otherwise than for collection or
deposit in the ordinary course of business) or discounted or sold with recourse
by such Person, or in respect of each such Person is otherwise directly or
indirectly liable, including, without limitation, any such obligation in effect
guaranteed by such Person through any agreement (contingent or otherwise) to
purchase, repurchase or otherwise acquire such obligation or any security
therefor, or to provide funds for the payment or discharge of such obligation
(whether in the form of loans, advances, stock purchases, capital contributions
or otherwise), or to maintain the solvency or any balance sheet or other
financial condition of the obligor of such obligation, or to make payment for
any products, materials or supplies or for any transportation or services
regardless of the non-delivery or non-furnishing thereof, in any such case if
the purpose or intent of such agreement is to provide assurance that such
obligation will be paid or discharged, or that any agreements relating thereto
will be complied with, or that the holders of such obligation will be protected
against loss in respect thereof.  The amount of any Guaranty shall be equal to
the outstanding principal amount of the obligation guaranteed or such lesser
amount to which the maximum exposure of the guarantor shall have been
specifically limited.





                                      -16-
<PAGE>   23
         "Hazardous Substance" means any substance so designated pursuant to
CERCLA, asbestos, petroleum, urea formaldehyde insulation and petroleum
by-products (other than propane).

         "Heritage" means Heritage Holdings, Inc., a Delaware corporation.

         "Indebtedness" shall mean, with respect to any Person, without
duplication,

         (a)     any indebtedness for borrowed money, all obligations upon
which interest charges are customarily paid and all obligations evidenced by
any bond, note, debenture or other similar instrument which such Person has
directly or indirectly created, incurred or assumed;

         (b)     all obligations of others secured by any Lien in respect of
property owned by such Person, whether or not such Person has assumed or become
liable for the payment of such indebtedness; provided that the amount of such
Indebtedness, if such Person has not assumed the same or become liable
therefor, shall in no event be deemed to be greater than the fair market value
from time to time of the property subject to such Lien;

         (c)     any indebtedness, whether or not for borrowed money (excluding
trade payables and accrued expenses arising in the ordinary course of
business), with respect to which such Person has become directly or indirectly
liable and which represents the deferred purchase price (or a portion thereof)
or has been incurred to finance the purchase price (or a portion thereof) of
any property or service or business acquired by such Person, whether by
purchase, consolidation, merger or otherwise;

         (d)     the principal component of any Capitalized Lease Obligations
to the extent such obligations would, in accordance with GAAP, appear on a
balance sheet of such Person;

         (e)     all Attributable Debt of such Person in respect of Sale and
Lease-Back Transactions not involving a Capitalized Lease Obligation;

         (f)     all Redeemable Capital Stock of such Person valued at the
greater of its voluntary or involuntary maximum fixed repurchase price plus
accrued dividends;

         (g)     any Preferred Stock of any Subsidiary of such Person valued at
the liquidation preference thereof, or any mandatory redemption payment
obligations in respect thereof plus, in either case, accrued dividends thereon;

         (h)     any indebtedness of the character referred to in clause (a),
(b), (c), (d), (e), (f) or (g) of this definition deemed to be extinguished
under GAAP but for which such Person remains legally liable;

         (i)     any indebtedness of any other Person of the character referred
to in clause (a), (b), (c), (d), (e), (f), (g) or (h) of this definition with
respect to which the Person whose Indebtedness is being determined has become
liable by way of a Guaranty;





                                      -17-
<PAGE>   24
         (j)     all obligations, contingent or fixed, of such person as an
account party in respect of letters of credit (other than letters of credit
incurred in the ordinary course of business and consistent with past practice);

         (k)     all liabilities of such Person in respect of unfunded vested
benefits under pension plans (determined on a net basis for all such plans) and
all asserted withdrawal liabilities of such Person or a commonly controlled
entity to a Multiemployer Plan;

         (l)     Swaps (other than Interest Rate Agreements);

         (m)     all obligations of such Person in respect of bankers'
acceptances (other than in respect of accounts payable to suppliers incurred in
the ordinary course of business consistent with past practice); and

         (n)     any amendment, supplement, modification, deferral, renewal,
extension or refunding of any liability of the types referred to in clauses (a)
through (m) above.

         For purposes hereof, the "maximum fixed repurchase price" of any
Redeemable Capital Stock which does not have a fixed repurchase price shall be
calculated in accordance with the terms of such Redeemable Capital Stock as if
such Redeemable Capital Stock were purchased on any date on which Indebtedness
shall be required to be determined pursuant to this Agreement and if such price
is based upon, or measured by, the fair market value of such Redeemable Capital
Stock, such fair market value shall be determined in good faith by the board of
directors or a similar governing body of the issuer of such Redeemable Capital
Stock.

         "Initial Closing Date" shall mean June 28, 1996.

         "Intercreditor Agreement" means the Intercreditor and Agency Agreement
among the Purchasers of the Private Placement Notes, the Administrative Agent
and the Collateral Agent.
         "Interest Coverage" means, as of any date, a ratio equal to the ratio
of (a) the Consolidated EBITDA of the Borrower for the period of four
consecutive fiscal quarters of the Borrower ending with the most recent fiscal
quarter for which the Borrower has delivered to the Banks, or is required under
Section 7A.1(i) to have delivered to the Banks, financial statements of the
Borrower to (b) the Consolidated Interest Expense of the Borrower for such
period of four consecutive fiscal quarters.

         "Interest Rate Agreement" shall mean any fully matched interest rate
Swap entered into with the intent to protect the Borrower against fluctuations
in interest rates and entered into as a bona fide hedging arrangement and not
for purposes of investment or speculation.

         "Investment" shall mean, as applied to any Person, any direct or
indirect purchase or other acquisition by such Person of stock or other
securities of any other Person, or any direct or indirect loan, advance or
capital contribution by such Person to any other Person, and any other item
which would be classified as an "investment" on a balance sheet of such Person
prepared in accordance with GAAP, including without limitation any direct or
indirect contribution by such Person of





                                      -18-
<PAGE>   25
property or assets to a joint venture, partnership or other business entity in
which such Person retains an interest (it being understood that a direct or
indirect purchase or other acquisition by such Person of assets of any other
Person (other than stock or other securities) shall not constitute an
"Investment" for purposes of this Agreement so long as such assets are all used
in the Business).  For the purposes of Section 7B.5(v), the amount involved in
Investments made during any period shall be the aggregate cost to the Borrower
and its Subsidiaries of all such Investments made during such period,
determined in accordance with GAAP, but without regard to unrealized increases
or decreases in value, or write-ups, write-downs or write-offs, of such
Investments and without regard to the existence of any undistributed earnings
or accrued interest with respect thereto accrued after the respective dates on
which such Investments were made, less any net return of capital realized
during such period upon the sale, repayment or other liquidation of such
Investments (determined in accordance with GAAP, but without regard to any
amounts received during such period as earnings (in the form of dividends not
constituting a return of capital, interest or otherwise) on such Investments or
as loans from any Person in whom such Investments have been made).  See Section
1.2(i).

         "Investment Limit" shall have the meaning specified in Section 7B.5.

         "Legal Requirement" shall mean any law, statute, ordinance, decree,
requirement, order, judgment, rule or regulation (or published official
interpretation of any of the foregoing by any Governmental Authority) of any
Governmental Authority.

         "Lending Officer" means each of such individuals whom the
Administrative Agent may designate by notice to the Borrower from time to time
as an officer who may receive telephone requests for borrowings under Section
2.1.3 and 2.2.3.

         "Letter of Credit" is defined in Section 2.3.1.

         "Letter of Credit Exposure" means, at any date, the sum of (a) the
aggregate face amount of all drafts that may then or thereafter be presented by
beneficiaries under all Letters of Credit then outstanding, plus (b) the
aggregate face amount of all drafts that the Letter of Credit Issuer has
previously accepted under Letters of Credit but has not paid.

         "Letter of Credit Issuer" means, for any Letter of Credit, Bank of
Boston or BOk or, in the event either Bank of Boston or BOk does not for any
reason issue a requested Letter of Credit, another Bank designated by the
Agents to issue such Letter of Credit in accordance with Section 2.3.

         "Leverage Ratio" means, as of any date, a ratio equal to the ratio of
(a) the Consolidated Funded Indebtedness of the Borrower as of the last day of
the most recent fiscal quarter of the Borrower for which the Borrower has
delivered to the Banks, or is required under Section 7A.1(i) to have delivered
to the Banks, a consolidated balance sheet of the Borrower to (b) the
Consolidated EBITDA of the Borrower for the period of four consecutive fiscal
quarters ended on such last day.





                                      -19-
<PAGE>   26
         "Liabilities" is defined in the second opening paragraph of the Note
Purchase Agreement in effect on the date hereof.

         "Lien" means any mortgage, pledge, security interest, encumbrance,
contractual deposit arrangement, lien (statutory or otherwise) or charge of any
kind (including any agreement to give any of the foregoing, any conditional
sale or other title retention agreement, any lease in the nature thereof, and
the filing of or agreement to give any financing statement under the Uniform
Commercial Code of any jurisdiction) or any other type of preferential
arrangement for the purpose, or having the effect, of protecting a creditor
against loss or securing the payment or performance of an obligation.

         "Loan" means each of the Working Capital Loan and the Acquisition
Loan.

         "Loan Documents" means this Agreement, the Intercreditor Agreement,
the Administrative Agent Fee Letter, the Documentation Agent Fee Letter  and
the Security Documents.

         "Margin Period" means each period commencing on (and including) the
Initial Closing Date or a Financial Statement Delivery Date and ending on (and
excluding) the earlier of (i) the next occurring Financial Statement Delivery
Date or (ii) in the case of the Acquisition Facility, the Acquisition
Conversion Date or, in the case of the Working Capital Facility, the Final
Maturity Date with respect to the Working Capital Loans.

         "Margin Stock" means "margin stock" within the meaning of Regulation
G, T, U or X of the Board of Governors of the Federal Reserve System.

         "Master Partnership" means Heritage Propane Partners, L.P., a Delaware
limited partnership.

         "Material Adverse Effect" means (i) a material adverse effect on the
business, assets or financial condition of the Borrower or the Borrower and its
Subsidiaries taken as a whole after giving effect to the Transactions, (ii) a
material impairment of the ability of the Borrower or any  Subsidiary of the
Borrower to perform any of its obligations under the Loan Documents to which it
is a party or (iii) a material adverse effect on the enforceability of any of
the Loan Documents.

         "Maximum Amount of Acquisition Credit" is defined in Section 2.1.2.

         "Maximum Amount of Working Capital Credit" is defined in Section
2.2.2.

         "Memorandum" means the memorandum dated May, 1996, prepared by
Prudential Securities for use in connection with the Borrower's private
placement of the Private Placement Notes.

         "Multiemployer Plan" means a "multiemployer plan" as defined in
section 4001(a)(3) of ERISA.





                                      -20-
<PAGE>   27
         "Net Proceeds" means the proceeds of any sale of assets in the form of
cash or cash equivalents including payments in respect of deferred payment
obligations when received in the form of cash or cash equivalents net of (i)
brokerage commissions and other fees and expenses related to such sale, (ii)
provisions for any taxes payable as a result of such sale, (iii) amounts
required to be paid to any Person (other than the Borrower or any  Subsidiary
of the Borrower) owning a beneficial interest in the assets sold, (iv)
appropriate amounts to be provided by the Borrower or any  Subsidiary of the
Borrower, as the case may be, as a reserve required in accordance with GAAP
against any liabilities associated with such sale of assets and retained by the
Borrower or any  Subsidiary of the Borrower, as the case may be, after such
sale and (v) amounts required to be applied to the repayment of Indebtedness
(other than the Private Placement Notes and amounts due under the Working
Capital Facility or Acquisition Facility) secured by a Lien on the assets sold.

         "Non-Compete Obligations" is defined in Section 7B.3(viii).

         "Noncompliance Event" means either or both of the following:

         (a)     failure of the Borrower to maintain a Leverage Ratio that is
(i) equal to or less than 5.25 to 1 as of any date on or prior to August 31,
1997, (ii) equal to or less than 5 to 1 as of any date after August 31, 1997
and on or prior to August 31, 1998, (iii) equal to or less than 4.75 to 1 as of
any date after August 31, 1998 and on or prior to February 28, 1999 or (iv)
equal to or less than 4.5 to 1 as of any date after February 28, 1999; and

         (b)     failure of the Borrower to maintain Interest Coverage that is
(i) equal to or greater than 2.0 to 1 as of any date on or prior to June 27,
1997 or (ii) equal to or greater than 2.25 to 1 as of any date after June 27,
1997.

         "Nonperforming Bank" is defined in Section 10.4.4.

         "Note Purchase Agreement" means that certain Note Purchase Agreement
between Heritage, Borrower and the Note Purchasers named in the Purchaser
Schedule annexed as Schedule I thereto dated as of June 24, 1996.

         "Note Purchasers" mean the purchasers of the Private Placement Notes.

         "Notes" means the Working Capital Notes and the Acquisition Notes.

         "Obligations" means and include any and all: (i) indebtedness,
obligations and liabilities of the Borrower to the Banks incurred or which may
be incurred or purportedly incurred hereafter pursuant to the terms of this
Agreement or any of the other Loan Documents, and any replacements, amendments,
extensions, renewals, substitutions, amendments and increases in amount
thereof, including such amounts as may be evidenced by the Notes and all lawful
interest, late charges, loan closing fees, service fees, origination/facility
fees, commitment fees, fees in lieu of balances, letter of credit processing
and issuance fees and other charges, and all reasonable costs and expenses
incurred in connection with the preparation, filing and recording of the Loan
Documents, including





                                      -21-
<PAGE>   28
reasonable attorneys fees and legal expenses; (ii) all reasonable costs and
expenses paid or incurred by the Banks and/or either Agent or the Collateral
Agent, including reasonable attorneys fees, in enforcing or attempting to
enforce collection of any Indebtedness and in enforcing or realizing upon or
attempting to enforce or realize upon any collateral or security for any
Indebtedness, including interest on all sums so expended by the Banks and/or
either Agent or the Collateral Agent accruing from the date upon which such
expenditures are made until paid, at an annual rate equal to the Default Rate;
and (iii) all sums expended by the Banks and/or either Agent or the Collateral
Agent in curing any Event of Default or Default of the Borrower under the terms
of this Agreement, the other Loan Documents or any other writing evidencing or
securing the payment of the Notes together with interest on all sums so
expended by the Banks and/or either Agent or the Collateral Agent accruing from
the date upon which such expenditures are made until paid, at an annual rate
equal to the Default Rate; and (iv) indebtedness, obligations and liabilities
of the Borrower arising out of the Note Purchase Agreement including, without
limitation, that evidenced by the Private Placement Notes.

         "Offering" is defined in the second opening paragraph of the Note
Purchase Agreement as in effect on the date hereof.

         "Officer's Certificate" shall mean, as to any corporation, a
certificate executed on its behalf by the Chairman of the Board of Directors
(if an officer) or its President or one of its Vice Presidents, and its
Treasurer, or Controller, or one of its Assistant Treasurers or Assistant
Controllers, and, as to the Master Partnership or the Borrower, a certificate
executed on behalf of the Master Partnership or the Borrower, as the case may
be, by its general partner in a manner which would qualify such certificate (a)
if such general partner were a corporation, as an Officer's Certificate of such
general partner hereunder or (b) if such general partner were a partnership or
other entity, as a certificate executed on its behalf by Persons authorized to
do so pursuant to the constituting documents of such partnership or other
entity.

         "Operative Agreements" means the Contribution Agreement, the other
Conveyance Agreements, and the Partnership Agreement.

         "Overdue Reimbursement Rate" means, at any date, the highest
Applicable Rate then in effect.

         "Parity Debt" means Indebtedness of the Borrower (a) (other than the
Notes) incurred in accordance with clauses (i), (ii) and (iii) of Section 7B.2
and (b) Additional Parity Debt.

         "Partnership Agreement" means the Agreement of Limited Partnership of
the Borrower as in effect on the Closing Date, and as the same may from time to
time be amended, supplemented or otherwise modified in accordance with the
terms thereof.

         "Partnership Documents" means the Agreement of Limited Partnership of
the Master Partnership and the Partnership Agreement , in each case as in
effect on the Closing Date and as the





                                      -22-
<PAGE>   29
same may from time to time be amended, supplemented or otherwise modified in
accordance with the terms hereof and thereof.

         "Payment Date" means the last Banking Day of each March, June,
September and December occurring after the Initial Closing Date.

         "PBGC" means the Pension Benefit Guaranty Corporation or any
Governmental Authority succeeding to any of its functions.

         "Percentage Interest" is defined in Section 10.1.

         "Performing Bank" is defined in Section 10.4.4.

         "Permits" is defined in Section 8.8.

         "Permitted Banks" is defined in Section 7B.5.

         "Person" means and includes an individual, a partnership, a joint
venture, a corporation, a trust, an unincorporated organization and a
government or any department or agency thereof.

         "Plan" means any "employee pension benefit plan" as such term is
defined in Section 3 of ERISA (other than a Multiemployer Plan) subject to the
provisions of Title IV of ERISA or Section 412 of the Code or Section 302 of
ERISA, and in respect of which the Borrower or any ERISA Affiliate is (or, if
such plan were terminated, would under Section 4069 of ERISA be deemed to be)
an "employer" as defined in Section 3(5) of ERISA.

         "Preferred Stock" means, as applied to the Capital Stock of any
Person, Capital Stock of any class or classes (however designated), which is
preferred as to the payment of distributions or dividends, or upon any
voluntary or involuntary liquidation or dissolution of such Person, over shares
or units of Capital Stock of any other class of such Person.

         "Priority Debt" means as of any date of determination, the sum,
without duplication, of (i) Indebtedness of the Subsidiaries of the Borrower
(other than Indebtedness owed to the Borrower or another Wholly-Owned
Subsidiary), plus (ii) Indebtedness of the Borrower and its Subsidiaries
secured by Liens permitted by clauses (i) and (vii) of Section 7B.3 and any
renewals of such Liens permitted by clause (xiv) of Section 7B.3

         "Property" means any interest in any kind of property or asset whether
real, personal, or mixed, or tangible or intangible.

         "PUHCA" is defined in Section 8.20.





                                      -23-
<PAGE>   30
         "Private Placement Notes" means the $120,000,000 senior secured notes
issued pursuant to the Memorandum, sold to the Purchasers and described and
defined in the Note Purchase Agreement as the "Notes."

         "Redeemable Capital Stock" means, as of any date of determination, any
shares of any class or series of Capital Stock, that, either by the terms
thereof, by the terms of any security into which such shares are convertible or
exchangeable or by contract or otherwise, are or upon the happening of an event
or passage of time would be, required to be redeemed prior to the stated
maturity with respect to the principal of any Loans or are redeemable at the
option of the holder thereof at any time prior to the stated maturity of any
Loans, or are convertible into or exchangeable for Indebtedness at any time
prior to the stated maturity of any Loans.

         "Register" is defined in Section 11.1.3.

         "Registration Statement" means  the Registration Statement on Form S-1
of Heritage Propane Partners, L.P.  (Registration No. 333-4018) filed with the
Commission on April 25, 1996, as amended by Amendment No. 1, filed with the
Commission on June 4, 1996, Amendment No. 2, filed with the Commission on June
14, 1996, and Amendment No. 3, filed with the Commission on June 22, 1996, in
the form when declared effective by the Commission and as amended on or prior
to the date of this Agreement.

         "Replacement Bank" is defined in Section 11.3.

         "Required Banks" means, with respect to any approval, consent,
modification, waiver or other action to be taken by the Administrative Agent or
the Banks under the Loan Documents which require action by the Required Banks,
such Banks that own at least 66 2/3% of the Percentage Interests; provided,
however, that with respect to any matters referred to in the proviso to Section
10.6, Required Banks means such Banks as own at least the respective portions
of the Percentage Interests required by Section 10.6.

         "Responsible Officer" means the chief executive officer, chief
operating officer, chief financial officer or chief accounting officer of the
Borrower or any other officer of the Borrower involved principally in its
financial administration or its controllership function.

         "Restricted Payment" means any payment or other distribution, direct
or indirect, in respect of any partnership or other equity interest in the
Borrower, except a distribution payable solely in additional partnership or
other equity interests in the Borrower, and any payment, direct or indirect on
account of the redemption, retirement, purchase or other acquisition of any
partnership or other equity interest in the Borrower.

         "Sale and Lease-Back Transaction" means, with respect to any Person (a
"Transferor"), any arrangement (other than between the Borrower and a
Wholly-Owned Restricted Subsidiary or between Wholly-Owned Restricted
Subsidiaries) whereby (a) property (the "Subject Property") has been or is to
be disposed of by such Transferor to any other Person with the intention on the
part of





                                      -24-
<PAGE>   31
such Transferor of taking back a lease of such Subject Property pursuant to
which the rental payments are calculated to amortize the purchase price of such
Subject Property substantially over the useful life of such Subject Property,
and (b) such Subject Property is in fact so leased by such Transferor or an
Affiliate of such Transferor.

         "Securities Act" means the Securities Act of 1933, as amended.

         "Security Agreement" shall mean the Security Agreement from the
Borrower and Heritage, as debtors and assignors, to the Collateral Agent, for
the benefit of the Banks and the Note Purchasers, as secured parties,
encumbering the Collateral described therein and covered thereby.

         "Security Documents"  shall mean the Security Agreement, the
Certificates and Stock Powers and the Financing Statements.

         "Senior Debt" shall mean Indebtedness of the Borrower which is not
expressed to be junior or subordinate to any other Indebtedness of the
Borrower.

         "Significant Subsidiary Group" shall mean any Subsidiary of the
Borrower, or any group of Subsidiaries of the Borrower, which at any time of
determination account for (or in the case of a recently formed or acquired
Subsidiary would have so accounted for on a pro forma basis) more than 5% of
consolidated operating revenues of the Borrower and its Subsidiaries for the
fiscal year most recently ended or more than 5% of consolidated total assets of
the Borrower and its Subsidiaries as of the end of the most recently ended
fiscal quarter, in each case computed in accordance with GAAP.

         "Subordinated Units" shall have the meaning specified in the second
opening paragraph of the Note Purchase Agreement as in effect on the date
hereof.

         "Subsidiary" shall mean, with respect to any Person, any corporation,
limited liability Borrower, partnership, joint venture, association, trust or
other entity of which (or in which) more than 50% of (a) the issued and
outstanding Capital Stock having ordinary voting power to elect a majority of
the board of directors of such corporation (irrespective of whether at the time
Capital Stock of any other class or classes of such corporation shall or might
have voting power upon the occurrence of any contingency), (b) the interests in
the capital or profits of such partnership, limited liability Borrower, joint
venture or association with ordinary voting power to elect a majority of the
board of directors (or Persons performing similar functions) of such
partnership, limited liability Borrower, joint venture or association, or (c)
the beneficial interests in such trust or other entity with ordinary voting
power to elect a majority of the board of trustees (or Persons performing
similar functions) of such trust or other entity, is at the time directly or
indirectly owned or controlled by such Person, by such Person and one or more
of its other Subsidiaries, or by one or more of such Person's other
Subsidiaries.  For the purposes of any computation under Section 6A or clause
(xiii) of Section 6B, the defined terms Consolidated Debt Service, Consolidated
EBITDA, Consolidated Funded Indebtedness, Consolidated Interest Expense and
Consolidated Pro Forma Maximum Debt Service shall be calculated on the basis
that Bi-State is a Subsidiary of the Borrower, but only as





                                      -25-
<PAGE>   32
long as the Borrower shall own 50% or more of the interests in the capital or
profits of Bi-State with ordinary voting power to elect a majority of the board
of directors (or Persons performing similar functions) thereof.

         "Swaps" shall mean, with respect to any Person, payment obligations
(fixed or contingent) with respect to interest rate swap agreements, interest
rate cap agreements, interest rate collar agreements, currency swaps and
similar obligations obligating such Person to make payments, whether
periodically or upon the happening of a contingency.  For the purposes of this
Agreement, the amount of the obligation under any Swap shall be the amount
determined in respect thereof as of the end of the then most recently ended
fiscal quarter of such Person, based on the assumption that such Swap had
terminated at the end of such fiscal quarter, and in making such determination,
if any agreement relating to such Swap provides for the netting of amounts
payable by and to such Person thereunder or if any such agreement provides for
the simultaneous payment of amounts by and to such Person, then in each such
case, the amount of such obligation shall be the net amount so determined.

         "Tax" means any present or future tax, levy, duty, impost, deduction,
withholding or other charges of whatever nature at any time required by any
Bank Legal Requirement (i) to be paid by any Bank or (ii) to be withheld or
deducted from any payment otherwise required hereby to be made to any Bank, in
each case on or with respect to its obligations hereunder, the Loan, any
payment in respect of the Credit Obligations or any Funding Liability not
included in the foregoing; provided, however, that the term "Tax" shall not
include taxes imposed upon or measured by the net income of such Bank (other
than withholding taxes) or franchise taxes.

         "Total Assets" means, as of any date of determination, the
consolidated total assets of the Borrower and its Subsidiaries as would be
shown on a consolidated balance sheet of the Borrower and its Subsidiaries
prepared in accordance with GAAP as of that date.  See Section 1.2(i).

         "Transactions" is defined in the third opening paragraph of the Note
Purchase Agreement as in effect on the date hereof.

         "UCC" means the Uniform Commercial Code.

         "Underwriting Agreement" means the Underwriting Agreement, dated the
date hereof, among the Partnership, the underwriters named in Schedule I
thereto and the other signatories thereto, relating to the Common Units
registered under the Registration Statement.

         "Uniform Customs and Practice" is defined in Section 2.3.7.

         "United States" or "U.S." means the United States of America.

         "United States Funds" means such coin or currency of the United States
as at the time shall be legal tender therein for the payment of public and
private debts.





                                      -26-
<PAGE>   33
         "Units" means, collectively, the Common Units and the Subordinated
Units.

         "Unused Proceeds Reserve" means, as of any date of determination, all
amounts theretofore offered to prepay Parity Debt under Section
7B.7(iii)(c)(II) and to prepay Notes under Section 4.2, the prepayment of which
was declined by the applicable lenders, less the portion of such amounts
theretofore applied by the Borrower to operations or capital expenditures in
connection with the conduct of the Borrower's business.

         "Unutilized Taking Proceeds" means, as of any date, any insurance or
condemnation proceeds (net of the reasonable costs of proceedings in connection
therewith and settlements in respect thereof) in excess of $100,000 with
respect to any single occurrence that were received by the Borrower or any of
its Subsidiaries in respect of any damage, destruction, condemnation or other
taking of all or any portion of the properties or assets of the Borrower or any
of its Subsidiaries and that have not been reinvested by the Borrower or  any
of its Subsidiaries within a period of twelve months after such receipt in the
restoration, modification or replacement of the properties or assets in respect
of which such insurance or condemnation proceeds were received.

         "Voting Stock" means, with respect to any corporation, any shares of
stock of such corporation the holders of which are entitled under ordinary
circumstances to vote for the election of directors of such corporation
(irrespective of whether at the time stock of any other class or classes shall
have or might have voting power by reason of the happening of any contingency).

         "Wholly-Owned" means, as applied to any Subsidiary of any Person, a
Subsidiary at least 98% (by vote or value) of the outstanding Equity Interests
(other than directors' qualifying shares, if required by law) of all classes,
taken together as a whole, of which are at the time owned by such Person or by
one or more of its Wholly-Owned Subsidiaries or by such Person and one or more
of its Wholly-Owned Subsidiaries.

         "Withdrawal Liability" shall mean liability to a Multiemployer Plan as
a result of a complete or partial withdrawal from such Multiemployer Plan, as
such terms are defined in Part I of Subtitle E of Title IV of ERISA.

         "Working Capital Facility" means the agreement of the Banks herein to
make Working Capital Loan and to provide for the issuance of Letters of Credit.

         "Working Capital Loan Account" is defined in Section 2.2.4.

         "Working Capital Loan" is defined in Section 2.2.4.

         "Working Capital Notes" is defined in Section 2.2.4.

         1.2     Accounting Principles, Terms and Determinations.





                                      -27-
<PAGE>   34
         (i)     All references in this Agreement to "generally accepted
accounting principles" or to "GAAP" shall be deemed to refer to generally
accepted accounting principles in effect in the United States at the time of
application thereof, but subject to the provisions of this Section 1.2(i).
Unless otherwise specified herein, all accounting terms used herein shall be
interpreted, all determinations with respect to accounting matters hereunder
shall be made, and all unaudited financial statements and certificates and
reports as to financial matters required to be prepared hereunder shall be
prepared in accordance with generally accepted accounting principles, applied
on a basis consistent with the most recent audited consolidated financial
statements of the Borrower and its Subsidiaries delivered pursuant to clause
(ii) of Section 7A.1 or, if no such statements have been so delivered, the most
recent audited financial statements referred to in clause (iii) of Section 8.4.

         (ii)    For the purpose of computing the consolidated financial
position, results of operation or other balance sheet or financial statement
items (including without limitation; Consolidated Debt Service, Consolidated
EBITDA, Consolidated Income Tax Expense, Consolidated Indebtedness,
Consolidated Interest Expense, Consolidated Net Income, Consolidated Non-Cash
Charges, Consolidated Pro Forma Maximum Debt Service and Consolidated Total
Assets) for any period prior to the Closing Date, such financial position,
results of operation and balance sheet or financial statement items shall
include Heritage and its Subsidiaries, determined on a consolidated basis in
accordance with GAAP, as reflected on the financial statements prepared by
Heritage and delivered to the Banks for any such period prior to the Closing
Date.

         1.3     Construction.  Except as otherwise explicitly specified to the
contrary or unless the context clearly requires otherwise, (i) the capitalized
term "Section" refers to sections of this Agreement, (ii) the capitalized term
"Exhibit" refers to exhibits to this Agreement, (iii) references to a
particular Article Section include all subsections thereof, (iv) the word
"including" shall be construed as "including without limitation", (v) terms
defined in the UCC and not otherwise defined herein have the meaning provided
under the UCC, (vi) references to a particular statute or regulation include
all rules and regulations thereunder and any successor statute, regulation or
rules, in each case as from time to time in effect and (vii) references to a
particular Person include such Person's successors and assigns to the extent
not prohibited by this Agreement and the other Loan Documents.  References to
"the date hereof" mean the date first set forth above.


                                   ARTICLE II

                                  THE CREDITS

         2.1     Acquisition Facility.

                 2.1.1    Acquisition Loan.  Subject to all the terms and
         conditions of this Agreement and so long as so long as no Default
         exists, from time to time on and after the Initial Closing Date and
         prior to December 31, 1998 (the "Acquisition Conversion Date") the
         Banks will, severally in accordance with their respective Percentage
         Interests, make loans to the Borrower in such amounts as may be
         requested by the Borrower in accordance with Section





                                      -28-
<PAGE>   35
         2.1.3.  The sum of the aggregate principal amount of loans made under
         this Section 2.1.1 at any one time outstanding shall in no event
         exceed the Maximum Amount of Acquisition Credit.

                 2.1.2    Maximum Amount of Acquisition Credit.  The term
         "Maximum Amount of Acquisition Credit" means, on any date on or prior
         to the Acquisition Conversion, the lesser of (a) $35,000,000 or (b)
         the aggregate Acquisition Loan Commitments described in Section 10.1,
         as amended from time to time, or such lesser amount as the Borrower
         may specify from time to time by notice from Borrower to the
         Administrative Agent and, after the Acquisition Conversion, zero.

                 2.1.3    Acquisition Loan Borrowing Requests.  The Borrower
         may from time to time request a loan under Section 2.1.1 by providing
         to the Administrative Agent a notice in writing (with a copy to each
         Bank).  Such notice must be not later than noon (Boston time) 10
         Banking Days  prior to the requested funding date for such loan.  The
         notice must specify (a) the amount of the requested loan (which shall
         be not less than $500,000 and in integral multiples of $100,000 in
         excess thereof) and (b) the requested funding date therefor (which
         shall be a Banking Day).  Each such notice shall be accompanied by (i)
         a memorandum from the Chief Financial Officer of Borrower's general
         partner summarizing the proposed acquisition or capital expenditures
         to be financed by the advance, (ii) in the case of an acquisition a
         complete copy of the signed letter of intent (with all exhibits or
         schedules thereto to the extent available), (iii) a full and complete
         copy of the Borrower's internal acquisition or capital expenditure
         model (in general form, content and detail as utilized by the General
         Partner or its Affiliates for similar acquisitions or capital
         expenditures prior to the Initial Closing Date) and (iv) a full,
         completed copy of the confidential business questionnaire in the
         general form as utilized by Heritage or its Affiliates prior to the
         Initial Closing Date (collectively the "Acquisition/Capex Due
         Diligence Packet").  Upon receipt of such notice, the Administrative
         Agent will promptly inform each other Bank (by telephone or
         otherwise).  Each such loan will be made at the Boston Office by
         depositing the amount thereof to the Disbursement Account of the
         Borrower with the Administrative Agent.  In connection with each such
         loan, the Borrower shall furnish to the Administrative Agent a
         certificate in substantially the form of Exhibit 2.1.3.

                 2.1.4    Acquisition Loan Account:  Acquisition Notes.  The
         Administrative Agent will establish on its books an acquisition loan
         account for the Borrower (the "Acquisition Loan Account") which the
         Administrative Agent shall administer as follows:  (a) the
         Administrative Agent shall add to the Acquisition Loan Account, and
         the Acquisition Loan Account shall evidence, the principal amount of
         all loans from time to time made by the Banks to the Borrower pursuant
         to Section 2.1.1 and (b) the Administrative Agent shall reduce the
         Acquisition Loan Account by the amount of all payments made on account
         of the Obligation evidenced by the Acquisition Loan Account.  The
         aggregate principal amount of the Indebtedness from time to time
         evidenced by the Acquisition Loan Account is referred to as the
         "Acquisition Loan."  The Acquisition Loan shall be deemed owed to each
         Bank severally in accordance with such Bank's Percentage Interest, and
         all payments credited to





                                      -29-
<PAGE>   36
         the Acquisition Loan Account shall be for the account of each Bank in
         accordance with its Percentage Interest.  The Borrower's obligations
         to pay each Bank's Percentage Interest in the Acquisition Loan shall
         be evidenced by a separate note of the Borrower in substantially the
         form of Exhibit 2.1.4 (the "Acquisition Notes"), payable to each Bank
         in maximum principal amount equal to such Bank's Percentage Interest
         in the total Commitments constituting the Acquisition Facility.

         2.2     Working Capital Facility.

                 2.2.1    Working Capital Loan.  Subject to all the terms and
         conditions of this Agreements and so long as no Default exists, from
         time to time on and after the Initial Closing Date and prior to the
         Final Maturity Date with respect to the Working Capital Loan the Banks
         will, severally in accordance with their respective Percentage
         Interests, make loans to the Borrower in such amounts as may be
         requested by the Borrower in accordance with Section 2.2.3.  The sum
         of the aggregate principal amount of loans made under this Section
         2.2.1 at any one time outstanding plus the Letter of Credit Exposure
         shall in no event exceed the Maximum Amount of Working Capital Credit.

                 2.2.2    Maximum Amount of Working Capital Credit.  The term
         "Maximum Amount of Working Capital Credit" means, on any date,
         $15,000,000 minus the outstanding principal balance on the
         Indebtedness permitted by Section 7B.2(v) or such lesser amount as the
         Borrower may specify from time to time by notice from the Borrower to
         the Administrative Agent; provided that the aggregate outstanding
         principal amount of Working Capital Loan shall be $0 for a period of
         not less than 30 consecutive calendar days at least one time during
         each fiscal year of the Borrower (the "Annual Clean-Up").  Failure by
         the Borrower to comply with the provisions of the Annual Clean-Up
         shall constitute a failure to pay the Loans when due and an Event of
         Default under Section 9.1.

                 2.2.3    Working Capital Borrowing Requests.  The Borrower may
         from time to time request a loan under Section 2.2.1 by providing to
         the Administrative Agent a notice (which may be given by a telephone
         call received by a Lending Officer if promptly confirmed in writing).
         Such notice must be not later than noon (Boston time) on the first
         Banking Day (third Banking Day if any portion of such loan will be
         subject to a Eurodollar Pricing Option on the requested Closing Date)
         prior to the requested advance date for such loan.  The notice must
         specify (a) the amount of the requested loan (which shall be not less
         than $100,000 and in integral multiples of $50,000 in excess thereof)
         and (b) the requested advance date therefor (which shall be a Banking
         Day).  Upon receipt of such notice, the Administrative Agent will
         promptly inform each other Bank (by telephone or otherwise).  Each
         such loan will be made at the Boston Office by depositing the amount
         thereof to the Administrative Agent's special disbursement account
         (the "Disbursement Account") for immediate wire transfer thereby to
         the operating account of the Borrower with the Documentation Agent.
         In connection with each such loan, the Borrower shall furnish to the
         Administrative Agent a certificate in substantially the form of
         Exhibit 2.2.3.





                                      -30-
<PAGE>   37
                 2.2.4    Working Capital Loan Account: Working Capital Notes.
         The Administrative Agent will establish on its books a working capital
         loan account for the Borrower (the "Working Capital Loan Account"),
         which the Administrative Agent shall administer as follows:  (a) the
         Administrative Agent shall add to the Working Capital Loan Account,
         and the Working Capital Loan Account shall evidence, the principal
         amount of all loans made from time to time by the Banks to the
         Borrower pursuant to Section 2.2.1 and (b) the Administrative Agent
         shall reduce the Working Capital Loan Account by the amount of all
         payments made on account of the Indebtedness evidenced by the Working
         Capital Loan Account.  The aggregate principal amount of the
         Indebtedness evidenced by the Working Capital Loan Account is referred
         to as the "Working Capital Loan."  The Working Capital Loan shall be
         deemed owed to each Bank severally in accordance with such Bank's
         Percentage Interest, and all payments credited to the working Capital
         Loan Account shall be for the account of each Bank in accordance with
         its Percentage Interest.  The Borrower's obligations to pay each
         Bank's Percentage Interest in the Working Capital Loan shall be
         evidenced by a separate note of the Borrower in substantially the form
         of Exhibit 2.2.4 (the "Working Capital Notes"), payable to each Bank
         in maximum principal amount equal to such Bank's Percentage Interest
         in the total Commitments constituting the Working Capital Facility.

         2.3     Letters of Credit.

                 2.3.1    Issuance of Letters of Credit.  Subject to all the
         terms and conditions of this Agreement and so long as no Default
         exists, from time to time on and after the Closing Date and prior to
         30 days prior to the Final Maturity Date with respect to the Working
         Capital Loan, the Letter of Credit Issuer will issue for the account
         of the Borrower one or more irrevocable documentary or standby letters
         of credit (the "Letters of Credit").  Letter of Credit Exposure plus
         the Working Capital Loan shall in no event exceed the Maximum Amount
         of Working Capital Facility.  Letter of Credit Exposure shall in no
         event exceed $5,000,000.

                 2.3.2    Requests for Letters of Credit.  The Borrower may
         from time to time request a Letter of Credit to be issued by providing
         to the Letter of Credit Issuer (and the Administrative Agent if the
         Letter of Credit Issuer is not the Administrative Agent) a notice
         which is actually received not less than five Banking Days prior to
         the requested issuance date for such Letter of Credit specifying (a)
         the amount of the requested Letter of Credit, (b) the beneficiary
         thereof, (c) the requested issuance date and (d) the principal terms
         of the text for such Letter of Credit.  Each Letter of Credit will be
         issued by forwarding it to the Borrower or to such other Person as
         directed in writing by the Borrower.  In connection with the issuance
         of any Letter of Credit, the Borrower shall furnish to the Letter of
         Credit Issuer (and the Administrative Agent if the Letter of Credit
         Issuer is not the Administrative Agent) a certificate in substantially
         the form of Exhibit 2.3.2. and any customary application forms
         required by the Letter of Credit Issuer.





                                      -31-
<PAGE>   38
                 2.3.3    Form and Expiration of Letters of Credit.  Each
         Letter of Credit issued under this Section 2.3 and each draft accepted
         or paid under such a Letter of Credit shall be issued, accepted or
         paid, as the case may be, by the Letter of Credit Issuer at its
         principal office.  No Letter of Credit shall provide for the payment
         of drafts drawn thereunder, and no draft shall be payable, at a date
         which is later than the earlier of (a) the date twelve months after
         the date of issuance or (b) 15 days prior to the Final Maturity Date
         with respect to the Working Capital Loans.  Each Letter of Credit and
         each draft accepted under a Letter of Credit shall be in such form and
         minimum amount, and shall contain such terms, as the Letter of Credit
         Issuer and the Borrower may agree upon at the time such Letter of
         Credit is issued, including a requirement of not less than three
         Banking Days after presentation of a draft before payment must be made
         thereunder.

                 2.3.4    Banks' Participation in Letters of Credit.  Upon the
         issuance of any Letter of Credit, a participation therein, in an
         amount equal to each Bank's Percentage Interest, shall automatically
         be deemed granted by the Letter of Credit Issuer to each Bank on the
         date of such issuance and the Banks shall automatically be obligated,
         as set forth in Section 10.4, to reimburse the Letter of Credit Issuer
         to the extent of their respective Percentage Interests for all
         obligations incurred by the Letter of Credit Issuer to third parties
         in respect of such Letter of Credit not reimbursed by the Borrower.
         The Letter of Credit Issuer will send to each Bank (and the
         Administrative Agent if the Letter of Credit Issuer is not the
         Administrative Agent) a confirmation regarding the participations in
         Letters of Credit outstanding during such month.

                 2.3.5    Presentation.  The Letter of Credit Issuer may accept
         or pay any draft presented to it, regardless of when drawn and whether
         or not negotiated, if such draft, the other required documents and any
         transmittal advice are presented to the Letter of Credit Issuer and
         dated on or before the expiration date of the Letter of Credit under
         which such draft is drawn.  Except insofar as instructions actually
         received may be given by the Borrower in writing expressly to the
         contrary with regard to, and prior to, the Letter of Credit Issuer's
         issuance of any Letter of Credit for the account of the Borrower and
         such contrary instructions are reflected in such Letter of Credit, to
         the maximum extent permitted by law the Letter of Credit Issuer may
         honor as complying with the terms of the Letter of Credit and with
         this Agreement any drafts or other documents otherwise in order signed
         or issued by an administrator, executor, conservator, trustee in
         bankruptcy, debtor in possession, assignee for benefit of creditors,
         liquidator, receiver or other legal representative of the party
         authorized under such Letter of Credit to draw or issue such drafts or
         other documents.

                 2.3.6    Payment of Drafts.  At such time as a Letter of
         Credit Issuer makes any payment on a draft presented or accepted under
         a Letter of Credit, the Borrower will on demand pay to such Letter of
         Credit Issuer in immediately available funds the amount of such
         payment.  Unless the Borrower shall otherwise pay to the Letter of
         Credit Issuer the amount required by the foregoing sentence, such
         amount shall be considered a loan under Section 2.2.1 and part of the
         Working Capital Loan.





                                      -32-
<PAGE>   39
                 2.3.7    Uniform Customs and Practice.  The Uniform Customs
         and Practice for Documentary Credits (1993 Revision), International
         Chamber of Commerce Publication No. 500, and any subsequent revisions
         thereof approved by a Congress of the International Chamber of
         Commerce and adhered to by the Letter of Credit Issuer (the "Uniform
         Customs and Practice"), shall be binding on the Borrower and the
         Letter of Credit Issuer except to the extent otherwise provided
         herein, in any Letter of Credit or in any other Loan Document.
         Anything in the Uniform Customs and Practice to the contrary
         notwithstanding:

                 (a)      Neither the Borrower nor any beneficiary of any
         Letter of Credit shall be deemed an agent of any Letter of Credit
         Issuer.

                 (b)      With respect to each Letter of Credit, neither any
         Letter of Credit Issuer nor its correspondents shall be responsible,
         except to the extent required by law, for or shall have any duty to
         ascertain:

                          (i)     the genuineness of any signature;

                          (ii)    the validity, form, sufficiency, accuracy,
                 genuineness or legal effect of any endorsements;

                          (iii)   delay in giving, or failure to give, notice
                 of arrival, notice of refusal of documents or of discrepancies
                 in respect of which any Letter of Credit Issuer refuses the
                 documents or any other notice, demand or protest;

                          (iv)    the performance by any beneficiary under any
                 Letter of Credit of such beneficiary's obligations to the
                 Borrower;

                          (v)     inaccuracy in any notice received by the
                 Letter of Credit Issuer;

                          (vi)    the validity, form, sufficiency, accuracy,
                 genuineness or legal effect of any instrument, draft,
                 certificate or other document required by such Letter of
                 Credit to be presented before payment of a draft, or the
                 office held by or the authority of any Person signing any of
                 the same; or

                          (vii)   failure of any instrument to bear any
                 reference or adequate reference to such Letter of Credit, or
                 failure of any Person to note the amount of any instrument on
                 the reverse of such Letter of Credit or to surrender such
                 Letter of Credit or to forward documents in the manner
                 required by such Letter of Credit.

                 (c)      Except as otherwise required by law, the occurrence
         of any of the events referred to in the Uniform Customs and Practice
         or in the preceding clauses of this Section 2.3.7 shall not affect or
         prevent the vesting of any of the Letter of Credit Issuer's rights or
         powers hereunder or the Borrower's obligation to make reimbursement of
         amounts paid under any Letter of Credit or any draft accepted
         thereunder.





                                      -33-
<PAGE>   40
                 (d)      The Borrower will promptly examine (i) each Letter of
         Credit (and any amendments thereof) sent to it by a Letter of Credit
         Issuer and (ii) all instruments and documents delivered to it from
         time to time by such Letter of Credit Issuer.  The Borrower will
         notify the Letter of Credit Issuer of any claim of noncompliance by
         notice actually received within three Banking Days after receipt of
         any of the foregoing documents, the Borrower being conclusively deemed
         to have waived any such claim against such Letter of Credit Issuer and
         its correspondents unless such notice is given.  The Letter of Credit
         Issuer shall have no obligation or responsibility to send any such
         Letter of Credit or any such instrument or document to the Borrower.

                 (e)      In the event of any conflict between the provisions
         of this Agreement and the Uniform Customs and Practice and Article 5
         of the Uniform Commercial Code, the provisions of this Agreement shall
         govern to the maximum extent permitted by applicable law.

                 2.3.8    Subrogation.  Subject to the terms of the
         Intercreditor Agreement, upon any payment by a Letter of Credit Issuer
         under any Letter of Credit and until the reimbursement of such Letter
         of Credit Issuer by the Borrower with respect to such payment, the
         Letter of Credit Issuer shall be entitled to be subrogated to, and to
         acquire and retain, the rights which the Person to whom such payment
         is made may have against the Borrower, all for the benefit of the
         Banks.  Subject to the terms of the Intercreditor Agreement, the
         Borrower will take such action as the Letter of Credit Issuer may
         reasonably request, including requiring the beneficiary of any Letter
         of Credit to execute such documents as the Letter of Credit Issuer may
         reasonably request, to assure and confirm to the Letter of Credit
         Issuer such subrogation and such rights, including the rights, if any,
         of the beneficiary to whom such payment is made in accounts
         receivable, inventory and other properties and assets of the Borrower.

                 2.3.9    Modification, Consent, etc.  If the Borrower requests
         or consents in writing to any modification or extension of any Letter
         of Credit, or waives any failure of any draft, certificate or other
         document to comply with the terms of such Letter of Credit, and if the
         Letter of Credit Issuer consents thereto, the Letter of Credit Issuer
         shall be entitled to rely on such request, consent or waiver.  This
         Agreement shall be binding upon the Borrower with respect to such
         Letter of Credit as so modified or extended, and with respect to any
         action taken or omitted by such Letter of Credit Issuer pursuant to
         any such request, consent or waiver.

         2.4     Application of Proceeds.

                 2.4.1    Acquisition Loan.  The Borrower will apply the
         proceeds of the Acquisition Loan solely to finance acquisitions
         permitted pursuant to Section 2.1 and to finance capital expenditures
         for additions or improvements to the assets of the Borrower (as
         distinguished from maintenance capital expenditures); provided, that
         the amount of capital expenditures so financed in any fiscal year of
         the Borrower shall not exceed $4,000,000.





                                      -34-
<PAGE>   41
                 2.4.2    Working Capital Loan.  The Borrower will apply the
         proceeds of the Working Capital Loan for working capital and other
         lawful purposes of the Borrower and its Subsidiaries, excluding,
         however, purposes described in Section 2.4.1.

                 2.4.3    Letters of Credit.  Letters of Credit shall be issued
         only for lawful purposes of the Borrower and its Subsidiaries.

                 2.4.4    Specifically Prohibited Applications.  The Borrower
         will not, directly or indirectly, apply any part of the proceeds of
         any extension of credit made pursuant to the Loan Documents to
         purchase or to carry Margin Stock or to any transaction prohibited by
         the Foreign Trade Regulations, by other Bank Legal Requirements of
         applicable to the Banks or by the Loan Documents.

         2.5     Nature of Obligations of Banks to Make Extensions of Credit.
The Banks' obligations to extend credit under this Agreement are several and
are not joint or joint and several.  If on the date any Loans are to be made,
any Bank shall fail to perform its obligations under this Agreement, the
aggregate amount of Commitments to make the extensions of credit under this
Agreement shall be reduced by the amount of unborrowed Commitments of the Bank
so failing to perform and the Percentage Interests shall be appropriately
adjusted.  Banks that have not failed to perform their obligations to make the
extensions of credit contemplated by Section 2 may, if any such Bank so
desires, assume, in such proportions as such Banks may agree, the obligations
of any Bank who has so failed and the Percentage Interests shall be
appropriately adjusted.  The provisions of this Section 2.5 shall not affect
the rights of the Borrower against any Bank failing to perform its obligations
hereunder.


                                  ARTICLE III

                   INTEREST; EURODOLLAR PRICING OPTIONS; FEES

         3.1     Interest.  Each Loan shall accrue and bear interest at a rate
per annum which shall at all times equal its Applicable Rate.  Prior to any
stated or accelerated maturity of any Loan, the Borrower will, on the last day
of each month, commencing June 30, 1996, pay the accrued and unpaid interest on
the portion of such Loan which was not subject to a Eurodollar Pricing Option.
On the last day of each Eurodollar Interest Period or on any earlier
termination of any Eurodollar Pricing Option, the Borrower will pay the accrued
and unpaid interest on the portion of such Loan which was subject to the
Eurodollar Pricing Option which expired or terminated on such date.  On the
Final Maturity Date or the earlier accelerated maturity of any Loan, the
Borrower will pay all accrued and unpaid interest on such Loan, including any
accrued and unpaid interest on any portion of such Loan which is subject to a
Eurodollar Pricing Option.  Upon the occurrence and during the continuance of
an Event of Default, the Banks may require accrued interest to be payable on
demand or at regular intervals more frequent than each Payment Date.  All
payments of interest hereunder shall be made to the Administrative Agent for
the account of each Bank in accordance with such Bank's Percentage Interest.





                                      -35-
<PAGE>   42
         3.2     Eurodollar Pricing Options.

                 3.2.1    Election of Eurodollar Pricing Options.  Subject to
         all of the terms and conditions hereof and so long as no Default
         exists, the Borrower may from time to time, by irrevocable notice to
         the Administrative Agent actually received not less than three Banking
         Days prior to the commencement of the Eurodollar Interest Period
         selected in such notice (except for the 10 Banking Days prior notice
         required by Section 2.1.3.),  elect to have such portion of a Loan as
         the Borrower may specify in such notice accrue and bear interest
         during the Eurodollar Interest Period so selected at the Applicable
         Rate computed on the basis of the Eurodollar Rate.  No such election
         shall become effective:

                 (i)      if, prior to the commencement of any such Eurodollar
         Interest Period, the Administrative Agent determines that (i) the
         electing or granting of the Eurodollar Pricing Option in question
         would violate a Bank Legal Requirement, (ii) Eurodollar deposits in an
         amount comparable to the principal amount of the Loan as to which such
         Eurodollar Pricing Option has been elected and which have a term
         corresponding to the proposed Eurodollar Interest Period are not
         readily available in the inter-bank Eurodollar market, or (iii) by
         reason of circumstances affecting the inter-bank Eurodollar market,
         adequate and reasonable methods do not exist for ascertaining the
         interest rate applicable to such deposits for the proposed Eurodollar
         Interest Period; or

                 (ii)     if any Bank shall have advised the Administrative
         Agent by telephone or otherwise at or prior to noon (Boston time) on
         the second Banking Day prior to the commencement of such proposed
         Eurodollar Interest Period (and shall have subsequently confirmed in
         writing) that, after reasonable efforts to determine the availability
         of such Eurodollar deposits, such Bank reasonably anticipates that
         Eurodollar deposits in an amount equal to the Percentage Interest of
         such Bank in the portion of such Loan as to which such Eurodollar
         Pricing Option has been elected and which have a term corresponding to
         the Eurodollar Interest Period in question will not be offered in the
         Eurodollar market to such Bank at a rate of interest that does not
         exceed the anticipated Eurodollar Basic Rate.

                 3.2.2    Notice to Banks and Borrower.  The Administrative
         Agent will promptly inform each Bank (by telephone or otherwise) of
         each notice received by it from the Borrower pursuant to Section 3.2.1
         and of the Eurodollar Interest Period specified in such notice.  Upon
         determination by the Administrative Agent of the Eurodollar Rate for
         such Eurodollar Interest Period or in the event such election shall
         not become effective, the Administrative Agent will promptly notify
         the Borrower and each Bank (by telephone or otherwise) of the
         Eurodollar Rate so determined or why such election did not become
         effective, as the case may be.

                 3.2.3    Selection of Eurodollar Interest Periods.  Eurodollar
         Interest Periods shall be selected so that:





                                      -36-
<PAGE>   43
                 (i)      the minimum portion of a Loan subject to any
         Eurodollar Pricing Option shall be $1,000,000 and in integral multiple
         of $100,000 in excess thereof;

                 (ii)     no more than a total of four Eurodollar Pricing
         Options shall be outstanding at any one time with respect to the
         Loans;

                 (iii)    no Eurodollar Interest Period with respect to any
         part of a Loan subject to a Eurodollar Pricing Option shall expire
         later than its applicable Final Maturity Date.

                 3.2.4    Additional Interest.  If any portion of a Loan
         subject to a Eurodollar Pricing Option is repaid, or any Eurodollar
         Pricing Option is terminated for any reason (including acceleration of
         maturity), on a date which is prior to the last Banking Day of the
         Eurodollar Interest Period applicable to such Eurodollar Pricing
         Option, the Borrower will pay to the Administrative Agent for the
         account of each Bank in accordance with such Bank's Percentage
         Interest, in addition to any amounts of interest otherwise payable
         hereunder, an amount equal to the present value (calculated in
         accordance with this Section 3.2.4) of interest for the unexpired
         portion of such Eurodollar Interest Period on the portion of such Loan
         so repaid, or as to which a Eurodollar Pricing Option was so
         terminated, at a per annum rate equal to the excess, if any, of (a)
         the rate applicable to such Eurodollar Pricing Option minus, (b) the
         lowest rate of interest obtainable by the Administrative Agent upon
         the purchase of debt securities customarily issued by the Treasury of
         the United States of America which have a maturity date approximating
         the last Banking Day of such Eurodollar Interest Period.  The present
         value of such additional interest shall be calculated by discounting
         the amount of such interest for each day in the unexpired portion of
         such Eurodollar Interest Period from such day to the date of such
         repayment or termination at a per annum interest rate equal to the
         interest rate determined pursuant to clause (b) of the preceding
         sentence, and by adding all such amounts for all such days during such
         period.  The determination by the Administrative Agent of such amount
         of interest shall, in the absence of manifest error, be conclusive.
         For purposes of this Section 3.2.4, if any portion of a Loan which was
         to have been subject to a Eurodollar Pricing Option is not outstanding
         on the first day of the Eurodollar Interest Period applicable to such
         Eurodollar Pricing Option other than for reasons described in Section
         3.2.1, the Borrower shall be deemed to have terminated such Eurodollar
         Pricing Option.

                 3.2.5    Violation of  Bank Legal Requirements.  If any Bank
         Legal Requirement shall prevent any Bank from funding or maintaining
         through the purchase of deposits in the interbank Eurodollar market
         any portion of a Loan subject to a Eurodollar Pricing Option or
         otherwise from giving effect to such Bank's obligations as
         contemplated by Section 3.2, (a) the Administrative Agent may by
         notice to the Borrower terminate all of the affected Eurodollar
         Pricing Options, (b) the portion of such Loan subject to such
         terminated Eurodollar Pricing Options shall immediately bear interest
         thereafter at the Applicable Rate computed on the basis of the Base
         Rate and (c) the Borrower shall make any payment required by Section
         3.2.4.





                                      -37-
<PAGE>   44
                 3.2.6    Funding Procedure.  The Banks may fund any portion of
         a Loan subject to a Eurodollar Pricing Option out of any funds
         available to the Banks.  Regardless of the source of the funds
         actually used by any of the Banks to fund any portion of such Loan
         subject to a Eurodollar Pricing Option, however, all amounts payable
         hereunder, including the interest rate applicable to any such portion
         of the Loan and the amounts payable under Sections 3.2.4, 3.5, 3.6,
         3.7 and 3.8, shall be computed as if each Bank had actually funded
         such Bank's Percentage Interest in such portion of such Loan through
         the purchase of deposits in such amount of the type by which the
         Eurodollar Basic Rate was determined with a maturity the same as the
         applicable Eurodollar Interest Period relating thereto and through the
         transfer of such deposits from an office of the Bank having the same
         location as the applicable Eurodollar Office to one of such Bank's
         offices in the United States of America.

         3.3     Commitment Fees.

                 3.3.1    Acquisition Financing Facility.  In consideration of
         the Banks' Commitments to make the extensions of credit provided for
         in Section 2.1, while such commitments are outstanding, the Borrower
         will pay to the Administrative Agent for the account of the Banks in
         accordance with the Banks' respective Percentage Interests, within
         five (5) Banking Days of each Financial Statement Delivery Date prior
         to the Acquisition Conversion Date and on the Acquisition Conversion
         Date, an amount equal to interest computed at the rate per annum equal
         to the Applicable Commitment Fee Percentage multiplied by the amount
         by which (a) the average daily Maximum Amount of Acquisition Credit
         during the Margin Period or portion thereof ending on such Financial
         Statement Delivery Date or Acquisition Conversion Date exceeded (b)
         the average daily Acquisition Loan during such Margin Period or
         portion thereof.

                 3.3.2    Working Capital Facility.  In consideration of the
         Banks' commitments to make the extension of credit provided for in
         Section 2.2 while such commitments are outstanding, the Borrower will
         pay to the Administrative Agent for the account of the Banks in
         accordance with the Banks' respective Percentage Interests, within
         five (5) Banking Days of the Financial Statement Delivery Date and on
         the Final Maturity Date with respect to the Working Capital Loan, an
         amount equal to interest computed at the rate per annum equal to the
         Applicable Commitment Fee Percentage multiplied by the amount by which
         (a) the average daily Maximum Amount of Working Capital Credit during
         the Margin Period or portion thereof ending on such Financial
         Statement Delivery Date or Final Maturity Date exceeded (b) the
         average daily Working Capital Loan during such Margin Period or
         portion thereof.

         3.4     Letter of Credit Fees.  The Borrower will pay to the
Administrative Agent for the account of each of the Banks (including any Letter
of Credit Issuer), in accordance with the Banks' respective Percentage
Interests, on the last day of each Margin Period, a Letter of Credit fee equal
to the Applicable Margin for Eurodollar Loans in effect for such Margin Period
on the average daily Letter of Credit Exposure during such Margin Period;
provided, however, that a portion of such fee equal to 1/8% per annum on the
Letter of Credit Exposure shall be paid solely to the respective





                                      -38-
<PAGE>   45
Letter of Credit Issuer.  The Borrower also will pay to each Letter of Credit
Issuer customary service charges and expenses for its services in connection
with the Letters of Credit issued by it at the times and in the amounts from
time to time in effect in accordance with its general rate structure, including
fees and expenses relating to issuance, amendment, negotiation, cancellation
and similar operations.

         3.5     Reserve Requirements, etc.  If any Bank Legal Requirement
shall (a) impose, modify, increase or deem applicable any insurance assessment,
reserve, special deposit or similar requirement against any Funding Liability
or the Letters of Credit, (b) impose, modify, increase or deem applicable any
other requirement or condition with respect to any Funding Liability or the
Letters of Credit, or (c) change the basis of taxation of Funding Liabilities
or payments in respect of any Letter of Credit (other than changes in the rate
of taxes measured by the overall net income of such Bank) and the effect of any
of the foregoing shall be to increase the cost to any Bank of issuing, making,
funding or maintaining its respective Percentage Interest in any portion of a
Loan subject to a Eurodollar Pricing Option or any Letter of Credit, to reduce
the amounts received or receivable by such Bank under this Agreement or to
require such Bank to make any payment or forego any amounts otherwise payable
to such Bank under this Agreement, then, within 15 days after the receipt by
the Borrower of a certificate from such Bank setting forth why it is claiming
compensation under this Section 3.5 and computations (in reasonable detail) of
the amount thereof, the Borrower shall pay to the Administrative Agent for the
account of such Bank such additional amounts as are specified by such Bank in
such certificate as sufficient to compensate such Bank for such increased cost
or such reduction, together with interest at the Overdue Reimbursement Rate on
such amount from the 15th day after receipt of such certificate until payment
in full thereof; provided, however, that the foregoing provisions shall not
apply to any Tax or to any reserves which are included in computing the
Eurodollar Reserve Rate.  The determination by such Bank of the amount of such
costs shall, in the absence of manifest error, be conclusive.

         3.6     Taxes.  All payments of the Credit Obligations shall be made
without set-off or counterclaim and free and clear of any deductions, including
deductions for Taxes, unless the Borrower is required by law to make such
deductions.  If (a) any Bank shall be subject to any Tax with respect to any
payment of the Credit Obligations or its obligations hereunder or (b) the
Borrower shall be required to withhold or deduct any Tax on any payment on the
Credit Obligations, within 15 days after the receipt by the Borrower of a
certificate from such Bank setting forth why it is claiming compensation under
this Section 3.6 and computations (in reasonable detail) of the amount thereof,
the Borrower shall pay to the Administrative Agent for such Bank's account such
additional amount as is necessary to enable such Bank to receive the amount of
Tax so imposed on the Bank's obligations hereunder or the full amount of all
payments which it would have received on the Credit Obligations (including
amounts required to be paid under Sections 3.5, 3.7, 3.8 and this Section 3.6)
in the absence of such Tax, as the case may be, together with interest at the
Overdue Reimbursement Rate on such amount from the 15th day after receipt of
such certificate until payment in full thereof.  Whenever Taxes must be
withheld by the Borrower with respect to any payments of the Credit
Obligations, the Borrower shall promptly furnish to the Administrative Agent
for the account of the applicable Bank official receipts (to the extent that
the relevant governmental authority delivers such receipts) evidencing payment
of any such Taxes so withheld.  If the Borrower fails to pay any such Taxes
when due or fails to remit to the Administrative Agent for the account





                                      -39-
<PAGE>   46
of the applicable Bank the required receipts evidencing payment of any such
Taxes so withheld or deducted, the Borrower shall indemnify the affected Bank
for any incremental Taxes and interest or penalties that may become payable by
such Bank as a result of any such failure.  The determination by such Bank of
the amount of such Tax and the basis therefor shall, in the absence of manifest
error, be conclusive.  The Borrower shall be entitled to replace any such Bank
in accordance with Section 11.3.

         3.7     Capital Adequacy.  If any Bank shall determine that compliance
by such Bank with any Bank Legal Requirement regarding capital adequacy of
banks or bank holding companies has or would have the effect of reducing the
rate of return on the capital of such Bank and its Affiliates as a consequence
of such Bank's commitment to make the extensions of credit contemplated hereby,
or such Bank's maintenance of the extensions of credit contemplated hereby, to
a level below that which such Bank could have achieved but for such compliance
(taking into consideration the policies of such Bank and its Affiliates with
respect to capital adequacy immediately before such compliance and assuming
that the capital of such Bank and its Affiliates was fully utilized prior to
such compliance) by an amount deemed by such Bank to be material, then, within
15 days after the receipt by the Borrower of a certificate from such Bank
setting forth why it is claiming compensation under this Section 3.7 and
computations (in reasonable detail) of the amount thereof, the Borrower shall
pay to the Administrative Agent for the account of such Bank such additional
amounts as shall be sufficient to compensate such Bank for such reduced return,
together with interest at the Overdue Reimbursement Rate on each such amount
from the 15th day after receipt of such certificate until payment in full
thereof.  The determination by such Bank of the amount to be paid to it and the
basis for computation thereof shall, in the absence of manifest error, be
conclusive.  In determining such amount, such Bank may use any reasonable
averaging, allocation and attribution methods.  The Borrower shall be entitled
to replace any such Bank in accordance with Section 11.3.

         3.8     Regulatory Changes.  If any Bank shall determine that (a) any
change in any Bank Legal Requirement (including any new Bank Legal Requirement)
after the date hereof shall directly or indirectly (i) reduce the amount of any
sum received or receivable by such Bank with respect to a Loan or the Letters
of Credit or the return to be earned by such Bank on such Loan or the Letters
of Credit, (ii) impose a cost on such Bank or any Affiliate of such Bank that
is attributable to the making or maintaining of, or such Bank's commitment to
make, its portion of such Loan or the Letters of Credit, or (iii) require such
Bank or any Affiliate of such Bank to make any payment on, or calculated by
reference to, the gross amount of any amount received by such Bank under any
Credit Document, and (b) such reduction, increased cost or payment shall not be
fully compensated for by an adjustment in the Applicable Rate or the Letter of
Credit fees, then, within 15 days after the receipt by the Borrower of a
certificate from such Bank setting forth why it is claiming compensation under
this Section 3.8 and computations (in reasonable detail) of the amount thereof,
the Borrower shall pay to such Bank such additional amounts as such Bank
determines will, together with any adjustment in the Applicable Rate, fully
compensate for such reduction, increased cost or payment, together with
interest on such amount from the 15th day after receipt of such certificate
until payment in full thereof at the Overdue Reimbursement Rate.  The
determination by such Bank of the amount to be paid to it and the basis for
computation thereof hereunder shall, in the absence of





                                      -40-
<PAGE>   47
manifest error, be conclusive.  In determining such amount, such Bank may use
any reasonable averaging and attribution methods.

         3.9     Computations of Interest and Fees.  For purposes of this
Agreement, interest, commitment fees and Letter of Credit fees (and any other
amount expressed as interest or such fees) shall be computed on the basis of a
360-day year for actual days elapsed.  If any payment required by this
Agreement becomes due on any day that is not a Banking Day, such payment shall,
except as otherwise provided in the Eurodollar Interest Period, be made on the
next succeeding Banking Day.  If the due date for any payment of principal is
extended as a result of the immediately preceding sentence, interest shall be
payable for the time during which payment is extended at the Applicable Rate,
but any letter of credit fees payable pursuant to Section 3.4 shall not be
increased as a result of such extension.

         3.10    Closing Fees.  In further consideration of the execution and
delivery of this Agreement by the Banks, on the Initial Closing Date the
Borrower will pay to the Administrative Agent for the account of the Banks
alone a closing fee in the amount of $490,000.

         3.11    Administrative Agent's Fees.  On the Initial Closing Date and
on each other date provided therein, the Borrower shall pay to the
Administrative Agent, for the Administrative Agent's own account, a fee in an
amount and payable in a manner to be mutually agreed in a separate writing
between the Borrower and the Administrative Agent (as from time to time in
effect, the "Administrative Agent Fee Letter").

         3.12    Documentation Agent's Fees.  On the Initial Closing Date and
on each other date provided therein, the Borrower shall pay to the
Documentation Agent, for the Agent's own account, a fee in an amount and
payable in a manner to be mutually agreed in a separate writing between the
Borrower and the Facilitating Agent (as from time to time in effect, the
"Documentation Agent Fee Letter").


                                   ARTICLE IV

                                    PAYMENT

         4.1     Payment at Maturity.  On the Final Maturity Date with respect
to each Tranche or any accelerated maturity of such Loan, the Borrower will pay
to the Administrative Agent for the account of the Banks an amount equal to the
remaining aggregate principal amount of such Tranche then outstanding, together
with all accrued and unpaid interest thereon and all other Credit Obligations
then outstanding.

         4.2     Contingent Required Prepayments.

                 4.2.1    Excess Credit Exposure.  If at any time the
         Acquisition Loan (prior to the Acquisition Conversion Date) or the
         Working Capital Loan exceeds the limit set forth in





                                      -41-
<PAGE>   48
         Section 2.1.2 or 2.2.2, respectively, the Borrower shall within three
         Banking Days pay the amount of such excess to the Administrative Agent
         for the account of the Banks.

                 4.2.2    Letter of Credit Exposure.  If at any time the Letter
         of Credit Exposure exceeds the limit set forth in Section 2.3.1, the
         Borrower shall within three Banking Days pay the amount of such excess
         to the Administrative Agent for the account of the Banks to be applied
         as provided in Section 4.5.

                 4.2.3    Contingent Prepayments on Disposition,  Loss of
         Assets, Merger or Change of Control.

                 (i)      If at any time the Borrower or any of its
         Subsidiaries disposes of assets or issues or sells Capital Stock of
         any Subsidiary with the result that there are Excess Sale Proceeds,
         and the Borrower does not apply such Excess Sale Proceeds in the
         manner described in Section 7B.7(iii)(c)(II)(x), the Borrower will
         prepay (at the price of the principal amount prepaid plus accrued
         interest thereon and any amount owing with respect thereto under
         Section  3.2.4 and upon notice as provided in Section 4.2.4) a
         principal amount of the outstanding Acquisition Notes equal to the
         Allocable Proceeds.

                 (ii)     In the event of any damage to, or destruction,
         condemnation or other taking of, all or any portion of the properties
         or assets of the Borrower or any of its Subsidiaries, to the extent
         that the Borrower or any such Subsidiary receives insurance or
         condemnation proceeds with the result that Unutilized Taking Proceeds
         exceed $2,500,000 in respect of any fiscal year (such excess amount
         being herein called "Excess Taking Proceeds"), the Borrower will
         prepay (at the price of the principal amount prepaid plus accrued
         interest thereon and any amount owing with respect thereto under
         Section  3.2.4 and upon notice as provided in Section 4.2.4) a
         principal amount of the outstanding Acquisition Notes equal to the
         Allocable Proceeds.

                 (iii)    (a)     If at any time any Responsible Officer has
         knowledge of the occurrence of any Control Event, the Borrower will
         give notice as provided in Section 4.4 of such Control Event to the
         Administrative Agent.  Upon the occurrence of a Control Event, the
         Borrower will not take any voluntary action that consummates or
         finalizes the Control Event resulting from such Control Event unless
         contemporaneously with such action, the Borrower prepays all Notes in
         accordance with this Section 4.2.3(iii) and upon notice as provided in
         Section 4.2.4 at the price of the principal amount thereof plus
         accrued interest thereon and any amount owing with respect thereto
         under Section 3.2.4.

                 (b)      The obligation of the Borrower to prepay Acquisition
         Notes pursuant to the offer required by paragraph (a) of this clause
         (iii) and accepted in accordance with Section 4.2.4 is subject to the
         consummation of the Control Event in respect of which any such offer
         and acceptance shall have been made.  In the event that such Control
         Event does not occur on or before the proposed prepayment date in
         respect thereof, the prepayment shall be deferred until and shall be
         made on the date on which such Control Event occurs.  The





                                      -42-
<PAGE>   49
         Borrower shall keep the Administrative Agent reasonably and timely
         informed of (I) any such deferral of the date of prepayment, (II) the
         date on which such Control Event and the prepayment are expected to
         occur, and (III) any determination by the Borrower that efforts to
         effect such resulting Control Event have ceased or been abandoned (in
         which case the Borrower shall have no further obligation hereunder to
         prepay the Acquisition Notes in respect of such Control Event).

         4.2.4   Prepayment Procedure for Contingent Prepayments.

                 (i)      If at any time there are unapplied Excess Sale
         Proceeds or Excess Taking Proceeds (such unapplied amounts being
         "Excess Proceeds"), and the Borrower is required to prepay the
         Acquisition Notes with such Excess Proceeds pursuant to clause (i) or
         (ii) of Section 4.2.3, the Borrower will give written notice as
         provided in Section 12.1 (which shall be in the form of an Officers'
         Certificate) to the Banks not later than twelve months after the date
         of the applicable Asset Sale or the end of the twelve month period
         following receipt of the applicable Unutilized Taking Proceeds, as the
         case may be, and (a) setting forth in reasonable detail all
         calculations required to determine the amount of Excess Proceeds, (b)
         setting forth the aggregate amount of the Allocable Proceeds and the
         amount of the Allocable Proceeds which is allocable to each
         Acquisition Note, determined by applying the Allocable Proceeds pro
         rata among all Acquisition Notes outstanding on the date such
         prepayment is to be made according to the aggregate then unpaid
         amounts of the Acquisition Notes, and in reasonable detail the
         calculations used in determining such amounts, and (c) stating that
         the Borrower will prepay on the date specified in such notice, which
         shall not be less than 25 nor more than 45 days after the date of such
         notice, a principal amount of each outstanding Acquisition Note equal
         to the amount of Allocable Proceeds allocated to such Acquisition Note
         as described in clause (b) above.

                 (ii)     If at any time the Borrower is required to prepay the
         Notes following the occurrence of a Control Event, the Borrower will
         give written notice as provided in Section 12.1 (which shall be in the
         form of an Officer's Certificate) to the Banks not later than five
         Business Days following such Control Event, (a) setting forth in
         reasonable detail the facts and circumstances underlying such Control
         Event known to it, and (b) stating that the Borrower will prepay on
         the date the Control Event occurs.

         4.3     Scheduled Required Payments/Prepayments.

                 4.3.1    Payments on the Acquisition Loan.  On each Payment
         Date occurring after the Acquisition Conversion Date, the Borrower
         shall pay 1/10th of the Acquisition Loan outstanding on the
         Acquisition Conversion Date, after giving effect to all prepayments
         thereon; provided, however, on the Final Maturity Date of the
         Acquisition Loan, the Borrower shall pay all outstanding principal of
         the Acquisition Loan.





                                      -43-
<PAGE>   50
                 4.3.2    Working Capital Loan.  The Borrower shall prepay the
         Working Capital Loan when necessary to comply with the Annual Clean-Up
         requirement set forth in the proviso to Section 2.2.2.

         4.4     Voluntary Prepayments.  In addition to the prepayments
required by Sections 4.2 and 4.3, the Borrower may from time to time prepay all
or any portion of the Loans (in a minimum amount of $100,000 and an integral
multiple of $50,000), without premium or penalty of any type (except as
provided in Section 3.2.4 with respect to the early termination of Eurodollar
Pricing Options).  The Borrower shall give the Administrative Agent at least
one Banking Day prior notice of its intention to prepay, specifying the date of
payment, the total amount of the Loans to be paid on such date and the amount
of interest to be paid with such prepayment.

         4.5     Letters of Credit.  If on the stated or any accelerated
maturity of the Credit Obligations the Banks shall be obligated in respect of a
Letter of Credit or a draft accepted under a Letter of Credit, the Borrower
will either:

                 (a)      prepay such obligation by depositing with the
         Administrative Agent an amount of cash, or

                 (b)      deliver to the Administrative Agent a standby letter
         of credit (designating the Administrative Agent as beneficiary and
         issued by a bank and on terms reasonably acceptable to the
         Administrative Agent),

in each case in an amount equal to the portion of the then Letter of Credit
Exposure issued for the account of the Borrower.  Any such cash so deposited
and the cash proceeds of any draw under any standby letter of credit so
furnished, including any interest thereon, shall be returned by the
Administrative Agent to the Borrower only when, and to the extent that, the
amount of such cash held by the Administrative Agent exceeds the Letter of
Credit Exposure at a time when no Default exists; provided, however, that if an
Event of Default occurs and the Credit Obligations become or are declared
immediately due and payable, the Administrative Agent may apply such cash,
including any interest thereon, to the payment of any of the Credit Obligations
as provided in the Intercreditor Agreement.

         4.6     Reborrowing Application of Payments, etc.

                 4.6.1    Reborrowing.  The amounts of the Acquisition Loan and
         the Working Capital Loan prepaid pursuant to Section 4.2.1, 4.2.3(i)
         or (ii), 4.3.2 or 4.4 may be reborrowed from time to time, in the case
         of the Acquisition Loan prior to the Acquisition Conversion Date in
         accordance with Section 2.1 and in the case of the Working Capital
         Loan prior to its Final Maturity Date, in accordance with Section 2.2
         and subject to the limits set forth therein.  No portion of the
         Acquisition Loan prepaid hereunder after the Acquisition Conversion
         Date may be reborrowed.





                                      -44-
<PAGE>   51
                 4.6.2    Order of Application.  Each prepayment of the Loan
         made pursuant to Section 4.2.1 shall be applied to the Working Capital
         Loan or the Acquisition Loan, as appropriate.  Each prepayment of the
         Loan made pursuant to Section 4.2.3(i) or (ii) shall be applied to the
         Acquisition Loan.  Any amounts of the Acquisition Loan prepaid after
         the Acquisition Conversion Date pursuant to the preceding sentence may
         not be reborrowed.  Each prepayment of the Acquisition Loan pursuant
         to Section 4.2.3(i) or (ii) after the Acquisition Conversion Date
         shall be applied to the outstanding principal balance of such Tranche
         in the inverse order of the required prepayments provided in Section
         4.3.1.

                 4.6.3    Payment with Accrued Interest, etc.  Upon all
         prepayments of a Loan, the Borrower shall pay to the Administrative
         Agent the principal amount to be prepaid, together with unpaid
         interest in respect thereof accrued to the date of prepayment and any
         amount owing with respect thereto under Section 3.2.4.  Notice of
         prepayment having been given in accordance with Section 4.4, and
         whether or not notice is given of prepayments pursuant to Sections 4.2
         and 4.3, the amount specified to be prepaid shall become due and
         payable on the date specified for prepayment.

                 4.6.4    Payments for Banks.  All payments of principal
         hereunder shall be made to the Administrative Agent for the account of
         the Banks in accordance with the Banks' respective Percentage
         Interests.


                                   ARTICLE V

                                    SECURITY

         5.1     Collateral.  The repayment of the Indebtedness shall be
secured by the Collateral as more particularly described and defined in the
Security Documents.

         The Borrower hereby acknowledges that all of the Collateral is granted
as security for the repayment of all Indebtedness evidenced by the Notes, the
Private Placement Notes and the notes, if any, evidencing other Parity Debt.
If one or more of such notes are paid in full or satisfied, but any portion of
the Indebtedness evidenced by such note remains unsatisfied, the Collateral
Agent may retain its security interest in all of the Collateral on behalf of
the Secured Parties described therein until the remaining Indebtedness secured
thereby is paid in full, even if the value of the Collateral far exceeds the
amount of such outstanding Indebtedness secured thereby.

         5.2     Intercreditor Agreement.  The Banks and the Documentation
Agent hereby authorize the Administrative Agent to execute and deliver the
Intercreditor Agreement to the Collateral Agent.





                                      -45-
<PAGE>   52

                                   ARTICLE VI

                  CONDITIONS PRECEDENT AND SUBSEQUENT TO LOANS

         6.1     Conditions Precedent to Initial Working Capital Loan and
Initial Acquisition Loan.  The obligation of the Banks to make the initial
Working Capital Loan and the initial Acquisition Loan is subject to the
satisfaction of all of the following conditions on or prior to the Initial
Closing Date (in addition to the other terms and conditions set forth herein):

                 (i)      No Default.  There shall exist no Event of Default,
         Noncompliance Event or Default on the Initial Closing Date.

                 (ii)     Representations and Warranties.  The representations,
         warranties and covenants set forth in Article VIII shall be true and
         correct on and as of the Initial Closing Date, with the same effect as
         though made on and as of the Initial Closing Date unless such
         representation or warranty relates only to an earlier date.

                 (iii)    Certificates.  The Borrower shall have delivered to
         the Agents Certificates, dated as of the Initial Closing Date, and
         signed by the President or Vice President and the Secretary of the
         General Partner and of Heritage, respectively, certifying (a) to the
         matters covered by the conditions specified in subsections (i) and
         (ii) of this Section 6.1, (b) that the Borrower and Heritage have
         performed and complied with all agreements and conditions required to
         be performed or complied with by them prior to or on the Initial
         Closing Date, (c) to the name and signature of each officer of the
         general partner of the Borrower and of Heritage authorized to execute
         and deliver the Loan Documents and any other documents, certificates
         or writings and to borrow under this Agreement, and (iv) to such other
         matters in connection with this Agreement which the Banks shall
         determine to be advisable.  The Banks may conclusively rely on such
         Certificates until Agent receives notice in writing to the contrary.

                 (iv)     Proceedings.  On or before the Initial Closing Date,
         all partnership proceedings of the Borrower shall be taken in
         connection with the transactions contemplated by the Loan Documents
         and shall be satisfactory in form and substance to the Banks and
         Agents' counsel; and the Agents shall have received certified copies,
         in form and substance satisfactory to the Banks and Agents' counsel,
         of the partnership agreements and certificates of the Borrower and the
         Articles or Certificates of Incorporation and By-Laws of the General
         Partner and the resolutions of the Board of Directors of the general
         partner of the Borrower, as adopted, authorizing the execution and
         delivery of the Loan Documents, the borrowings under this Agreement,
         and the granting of the security interests in the Collateral pursuant
         to the Security Agreement, to secure the payment of the Indebtedness.

                 (v)      Notes.  The Borrower shall have delivered the Notes
         payable to the order of the respective Banks, to the Administrative
         Agent, in each case appropriately executed.





                                      -46-
<PAGE>   53
                 (vi)     Security Agreement.  The Borrower shall have
         delivered to the Collateral Agent the Security Agreement,
         appropriately executed by the Borrower and Heritage, and dated as of
         the Closing Date, together with such financing statements (UCC or
         otherwise) (collectively, the "Financing Statements"), and other
         documents as shall be necessary and appropriate to perfect the
         Collateral Agent's security interests in the Collateral covered by
         said Security Agreement, including, without limitation, the Security
         Agreement, and such certificates representing shares of Capital Stock
         included in the Collateral and proper stock powers with respect
         thereto duly endorsed in blank (collectively, the "Certificates and
         Stock Powers").

                 (vii)    Private Placement Notes and Common Units Closings.
         The transactions and closing contemplated by (i) the Note Purchase
         Agreement, including without limitation, all of the Conditions of
         Closing in Sections 3.A through 3.M, inclusive, of the Note Purchase
         Agreement, shall have been consummated and the Private Placement Notes
         duly issued in accordance with the terms, provisions and conditions of
         the Note Purchase Agreement and (ii) the Registration Statement shall
         have been duly consummated and the Common Units purchased in
         accordance with the terms, provisions and conditions of the
         Underwriting Agreement described and defined in the Note Purchase
         Agreement.

                 (viii)   Opinions of Borrower's Counsel.  The Agents shall
         have received from Borrower's counsel, Doerner, Saunders, Daniel &
         Anderson, as well as certain local counsel pertaining to the
         Collateral, favorable written closing opinions addressed to the Agents
         and the Banks, satisfactory in form and substance to the Banks and
         Agents' counsel.  In addition, the Agents shall have received from
         Andrews & Kurth L.L.P., reliance letters on their opinion delivered
         pursuant to the Underwriting Agreement referred to in clause (vii) and
         certain portions of their opinion delivered to the purchasers of the
         Private Placement Notes.

                 (ix)     UCC Releases/Other Information.  The Administrative
         Agent shall have received a written payoff statement from any other
         secured party of record concerning any of the Collateral together with
         applicable UCC terminations of record of all such existing security
         interest liens pertaining to the Collateral or any part thereof.

                 (x)      Fees.  The Borrower shall have paid to the
         Administrative Agent for the account of the Banks in accordance with
         the Percentage Interests the sum of $500,000 representing loan
         origination fees on the Working Capital Facility and Acquisition
         Facility as required by Section 3.4 above and to each of the Agents
         all amounts required to be paid on the Initial Closing Date pursuant
         to the Administrative Agent Fee Letter and the Documentation Fee Agent
         Letter, respectively.

                 (xi)     Other Information and Closing Documents.  The
         Administrative Agent shall have received such other consents,
         information, documents, agreements and assurances as shall be
         reasonably requested by the Banks, including, without limitation,
         appropriate consents and approvals to the issuance of the Notes, the
         Private Placement Notes the





                                      -47-
<PAGE>   54
         Common Units and the Commitments and the Intercreditor Agreement shall
         have been duly executed by all parties thereto and delivered to the
         Collateral Agent.

         6.2     Conditions Precedent to All Loans.  The Banks shall not be
obligated to make any additional Loan advance(s) or to issue any Letters of
Credit after the Initial Closing Date (i) if at such time any Event of Default
or any Noncompliance Event shall have occurred or any Default shall have
occurred and be continuing; or (ii) if any of the representations, warranties
and covenants contained in Article VIII of this Agreement shall be false or
untrue in any material respect on the date of such advance or issue, as if made
on such date (unless such representation or warranty relates only to an earlier
date).  Each request by the Borrower for an additional Working Capital Loan or
Acquisition Loan shall constitute a representation by the Borrower that there
is not at the time of such request an Event of Default, a Noncompliance Event
or a Default, and that all representations, warranties and covenants in Article
VIII of this Agreement are true and correct on and as of the date of each such
applicable Loan request or request for a Letter of Credit.

                                  ARTICLE VII

                                   COVENANTS

         The Borrower hereby covenants and agrees with the Banks that, comply
with the terms and provisions of this Article VII.

         7A.     Affirmative Covenants.

         7A.1    Financial Statements.  The Borrower will maintain, and will
cause each of its Subsidiaries to maintain, a system of accounting established
and administered in accordance with GAAP.  The Borrower covenants that it will
deliver to each Bank:

                 (i)      as soon as practicable and in any event within 50
         days after the end of each quarterly period in each fiscal year,
         consolidated statements of income, partners' capital and cash flows of
         the Borrower and its Subsidiaries for such quarterly period and (in
         the case of the second, third and fourth quarterly periods) for the
         period from the beginning of the current fiscal year to the end of
         such quarterly period, and consolidated balance sheets of the Borrower
         and its Subsidiaries as at the end of such quarterly period, setting
         forth in each case with respect to financial statements delivered as
         of any date and for any period after August 31, 1997, in comparative
         form figures for the corresponding period in the preceding fiscal
         year, all in reasonable detail and satisfactory in form to the
         Required Banks and certified by an authorized financial officer of the
         Borrower as presenting fairly, in all material respects, the
         information contained therein (except for the absence of footnotes and
         subject to changes resulting from normal year-end adjustments), in
         accordance with GAAP; provided, however, that at any time when the
         Master Partnership shall be subject to the reporting requirements of
         Section 13 or 15(d) of the Exchange Act delivery within the time
         period specified above of copies of the Quarterly Report on Form 10-Q
         of the Master Partnership for such quarterly





                                      -48-
<PAGE>   55
         period filed with the Commission shall be deemed to satisfy the
         requirements of this clause (i) if (x) the Consolidated Net Income of
         the Borrower and its Subsidiaries accounts for at least 95% of the net
         income of the Master Partnership for such quarterly period, and (y)
         all such statements required to be delivered pursuant to this clause
         (i) with respect to the Borrower and its Subsidiaries are either
         included or are included in such Form 10-Q or delivered separately by
         the Borrower together with such Form 10-Q;

                 (ii)     as soon as practicable and in any event within 95
         days after the end of each fiscal year, consolidated and consolidating
         statements of income and cash flows and a consolidated and
         consolidating statement of partners' capital (or stockholders' equity,
         as applicable) of the Borrower and its Subsidiaries for such year, and
         consolidated and consolidating balance sheets of the Borrower and its
         Subsidiaries, as at the end of such year, setting forth in each case
         with respect to financial statements delivered as of any date and for
         any period after August 31, 1997, in comparative form corresponding
         consolidated and, where applicable, consolidating figures from the
         preceding annual audit, all in reasonable detail and, as to the
         consolidated statements, reported on by Arthur Andersen LLP, or other
         independent public accountants of recognized national standing
         selected by the Borrower whose report shall be without limitation as
         to the scope of the audit and, as to the consolidating statements,
         certified by an authorized financial officer of the Borrower as
         presenting fairly, in all material respects, the information contained
         therein, in accordance with GAAP (except, in the case of such
         consolidating financial statements, for the absence of footnotes);
         provided, however, that at any time when the Master Partnership shall
         be subject to the reporting requirements of Section 13 or 15(d) of the
         Exchange Act delivery within the time period specified above of copies
         of the Annual Report on Form 10-K of the Master Partnership for such
         fiscal year prepared in compliance with the requirements therefor and
         filed with the Commission shall be deemed to satisfy the requirements
         of this clause (ii) if (x) the Consolidated Net Income of the Borrower
         and its Subsidiaries accounts for at least 95% of the net income of
         the Master Partnership for such fiscal year, and (y) all such
         statements required to be delivered pursuant to this clause (ii) with
         respect to the Borrower and its Subsidiaries are either included in
         such Form 10-K and such reports or delivered separately by the
         Borrower together with such Form 10-K and such reports;

                 (iii)    promptly upon receipt thereof by the Borrower, copies
         of all reports submitted to the Borrower by independent public
         accountants in connection with each special, annual or interim audit
         of the books of the Borrower or any Subsidiary thereof made by such
         accountants, including without limitation the comment letter submitted
         by each such accountant to management in connection with their annual
         audit;

                 (iv)     promptly upon transmission thereof, copies of (a) all
         financial statements, proxy statements, notices and reports as the
         Borrower or the Master Partnership shall send or make available to the
         public Unitholders of the Master Partnership, (b) all registration
         statements (without exhibits), all prospectuses and all reports which
         the Borrower or the Master Partnership files with the Commission (or
         any governmental body or agency succeeding to the functions of the
         Commission), (c) all press releases and other similar





                                      -49-
<PAGE>   56
         written statements made available by the Borrower or the Master
         Partnership to the public concerning material developments in the
         business of the Borrower or the Master Partnership, as the case may
         be, and (d) all reports, notices and other similar written statements
         sent or made available by the Borrower or the Master Partnership to
         any holder of its Indebtedness pursuant to the terms of any agreement,
         indenture or other instrument evidencing such Indebtedness, including
         without limitation the Credit Agreement, except to the extent the same
         substantive information is already being provided pursuant to this
         Section 7A.1;

                 (v)      as soon as reasonably practicable, and in any event
         within 5 Business Days after a Responsible Officer obtains knowledge
         that any Default or Event of Default has occurred, a written statement
         of such Responsible Officer setting forth details of such Default or
         Event of Default and the action which the Borrower has taken, is
         taking and proposes to take with respect thereto;

                 (vi)     as soon as reasonably practicable, and in any event
         within 5 Business Days after a Responsible Officer obtains knowledge
         of (a) the occurrence of an adverse development with respect to any
         litigation or proceeding involving the Borrower or any of its
         Subsidiaries which in the reasonable judgment of the Borrower could
         reasonably be expected to have a Material Adverse Effect or (b) the
         commencement of any litigation or proceeding involving the Borrower or
         any of its Subsidiaries which in the reasonable judgment of the
         Borrower could reasonably be expected to have a Material Adverse
         Effect, a written notice of such Responsible Officer describing in
         reasonable detail such commencement of, or adverse development with
         respect to, such litigation or proceeding;

                 (vii)    as soon as possible after, and in any event within 10
         Business Days after any Responsible Officer of the Borrower or any
         ERISA Affiliate knows or has reason to know that, any ERISA Event has
         occurred or is expected to occur that, alone or together with any
         other ERISA Events that have occurred, in the opinion of the principal
         financial officer of the Borrower could reasonably be expected to
         result in liability of the Borrower in an aggregate amount exceeding
         $2,000,000, a statement setting forth a detailed description of such
         ERISA Event and the action, if any, that the Borrower or any ERISA
         Affiliate has taken, is taking or proposes to take or cause to be
         taken with respect thereto (together with a copy of any notice, report
         or other written communication filed with or given to or received from
         the PBGC, the Internal Revenue Service or the Department of Labor with
         respect to such event or condition);

                 (viii)   as soon as reasonably practicable, and in any event
         within five Business Days after a Responsible Officer obtains
         knowledge of a violation or alleged violation of any Environmental Law
         or the presence or release of any Hazardous Substance within, on,
         from, relating to or affecting any property, which in the reasonable
         judgment of the Borrower could reasonably be expected to have a
         Material Adverse Effect, notice thereof, and upon request, copies of
         relevant documentation;





                                      -50-
<PAGE>   57
                 (ix)     together with each delivery of financial information
         pursuant to clause (i) or clause (ii) of this Section 7A.1, a
         statement setting forth, together with computations in reasonable
         detail, the amount of Available Cash as of the date of the balance
         sheet contained therein and the amounts of all Net Proceeds, Excess
         Sale Proceeds, Unutilized Taking Proceeds and Unused Proceeds Reserves
         held by the Borrower at the end of the applicable quarterly period or
         fiscal year, as the case may be;

                 (x)      as soon as reasonably practicable, and in any event
         within 5 Business Days after a Responsible Officer obtains knowledge
         that the holder of any Note has given any notice to the Borrower or
         any Subsidiary thereof or taken any other action with respect to a
         claimed Default or Event of Default under this Agreement or any other
         Loan Documents, or that any Person has given any notice to the
         Borrower or any such Subsidiary or taken any other action with respect
         to a claimed default or event or condition of the type referred to in
         [Section 9.1A(iii), Event of Default] a written statement of such
         Responsible Officer describing such notice or other action in
         reasonable detail and the action which the Borrower has taken, is
         taking and proposes to take with respect thereto;

                 (xi)     prior to the Closing Date and within 45 days after
         the end of each calendar year ending thereafter, commencing with the
         year ending December 31, 1996, a report prepared by the Borrower or
         its broker or agent (a) setting forth the insurance maintained
         pursuant to Section 7A.8, substantially in the form delivered on the
         Closing Date and referred to in Section 6.1k, and including, without
         limitation, the amounts thereof, the names of the insurers and the
         property, hazards and risks covered thereby, and certifying that all
         premiums with respect to the policies described in such report then
         due thereon have been paid and that the same are in full force and
         effect, (b) setting forth all self-insurance maintained by the
         Borrower pursuant to Section 7A.8 and (c) certifying that such
         insurance or self insurance complies with the requirements of such
         Section 7A.8; and

                 (xii)    with reasonable promptness, such other information
         and data (financial or other) as from time to time may be reasonably
         requested by any Bank.

Together with each delivery of financial statements required by clauses (i) and
(ii) above, the Borrower will deliver to each holder of Notes an Officers'
Certificate (I) stating that the signers have reviewed the terms of this
Agreement and the other Loan Documents, and have made, or caused to be made
under their supervision, a review in reasonable detail of the transactions and
condition of the Borrower and its Subsidiaries during the accounting period
covered by such financial statements, and that no Default or Event of Default
has occurred and is continuing, or, if any such Default or Event of Default
then exists, specifying the nature and approximate period of existence thereof
and what action the Borrower has taken or is taking or proposes to take with
respect thereto, (II) specifying the amount available at the end of such
accounting period for Restricted Payments in compliance with Section 7B.6 and
showing in reasonable detail all calculations required in arriving at such
amount, (III) demonstrating (with computations in reasonable detail) compliance
at the end of such accounting period by the Borrower and its Subsidiaries with
the provisions of Sections 4.6, 7B.1, 7B.2, 7B.3, 7B.4, 7B.5(v), 7B.7(i)(b),
7B.7(i)(c), 7B.7(iii) and 7B.12, and (IV) if not specified





                                      -51-
<PAGE>   58
in the related financial statements being delivered pursuant to clauses (i) and
(ii) above, specifying the aggregate amount of interest paid or accrued by, and
aggregate rental expenses of, the Borrower and its Subsidiaries, and the
aggregate amount of depreciation, depletion and amortization charged on the
books of the Borrower and its Subsidiaries, during the fiscal period covered by
such financial statements.

         Together with each delivery of financial statements required by clause
(ii) above, the Borrower will deliver a certificate of such accountants stating
that they have reviewed the terms of this Agreement and the other Loan
Documents and that in making the audit necessary for their report on such
financial statements, they have obtained no knowledge of any Event of Default
or Default, or, if they have obtained knowledge of any Event of Default or
Default, specifying the nature and period of existence thereof.  Such
accountants, however, shall not be liable to anyone by reason of their failure
to obtain knowledge of any Event of Default or Default which would not be
disclosed in the course of an audit conducted in accordance with generally
accepted auditing standards.

         7A.2    Inspection of Property.  The Borrower will permit any Person
designated in writing by any holder of the Notes which is an institutional
investor, at the Borrower's expense during the continuance of a Default or
Event of Default and otherwise at such holder's expense, to visit and inspect
any of the properties of the Borrower and its Subsidiaries, to examine the
corporate books and financial records of the Borrower and its Subsidiaries and
make copies thereof or extracts therefrom and to discuss the affairs, finances
and accounts of any of such partnerships or corporations with the principal
officers of the Borrower and its independent public accountants, all at such
reasonable times and as often as such holder may reasonably request.  The
Borrower hereby authorizes, and agrees to cause each of its Subsidiaries to
authorize, its and their independent public accountants to discuss with such
Person the affairs, finances and accounts of the Borrower and its Subsidiaries
in accordance with this Section 7A.2.

         7A.3    Covenant to Secure Notes Equally.  If the Borrower or any of
its Subsidiaries shall create or assume any Lien upon any of its property or
assets, whether now owned or hereafter acquired, other than Liens permitted by
the provisions of Sections 7B.3 and 7B.4 (unless prior written consent to the
creation or assumption thereof shall have been obtained pursuant to Section
10.6), the Borrower will make or cause to be made effective provision whereby
the Notes will be contemporaneously secured by such Lien equally and ratably
with any and all other Indebtedness thereby secured so long as any such other
Indebtedness shall be so secured (including, without limitation, the provision
of any financial accommodations extended to the holders of such other
Indebtedness in connection with the release of such Lien and/or the sale of any
property subject thereto), it being understood that the provision of such equal
and ratable security shall not constitute a cure or waiver of any related Event
of Default.

         7A.4    Partnership or Corporate Existence, etc.; Compliance with
Laws.

         (i)     Except as otherwise expressly permitted in accordance with
Section 7B.7 or 7B.11, (a) the Borrower will at all times preserve and keep in
full force and effect its partnership existence and its status as a partnership
not taxable as a corporation for U.S. federal income tax purposes, (b)





                                      -52-
<PAGE>   59
the Borrower will cause each of its Subsidiaries to keep in full force and
effect its partnership or corporate existence, as the case may be, and (c) the
Borrower will, and will cause each of its Subsidiaries to, at all times
preserve and keep in full force and effect all of its material rights and
franchises; provided, however, that the partnership or corporate existence of
any Subsidiary, and any right or franchise of the Borrower or any Subsidiary,
may be terminated notwithstanding this Section 7A.4 if such termination (x) is
in the best interest of the Borrower and the Subsidiaries, (y) is not
disadvantageous to the holders of the Notes in any material respect and (z)
could not reasonably be expected to have a Material Adverse Effect.

         (ii)    The Borrower will, and will cause each of its Subsidiaries to,
at all times comply with all laws, regulations and statutes (including without
limitation any zoning or building ordinances or code or Environmental Laws)
applicable to it except for any failure to so comply which, individually or in
the aggregate, could not reasonably be expected to have a Material Adverse
Effect.

         (iii)   The Borrower will notify the Bank a reasonable time prior to
the adoption of any amendment to the Partnership Agreement, the Note Purchase
or any Operative Agreement and will include in that notice a reasonably
detailed description of such amendment and the intended effects thereof.

         7A.5    Payment of Taxes and Claims.  The Borrower will, and will
cause each of its Subsidiaries to, pay all taxes, assessments and other
governmental charges imposed upon it or any of its Subsidiaries, or any of its
or its Subsidiaries' properties or assets or in respect of any of its or any of
its Subsidiaries' franchises, business, income or profits when the same become
due and payable, and all claims (including without limitation claims for labor,
services, materials and supplies) for sums which have become due and payable
and which by law have or might become a Lien upon any of its or any of its
Subsidiaries' properties or assets; provided that no such tax, assessment,
charge or claim need be paid if it is being contested in good faith by
appropriate proceedings promptly initiated and diligently conducted and if such
reserves or other appropriate provision, if any, as shall be required by GAAP
shall have been made therefor and be adequate in the good faith judgment of the
Board of Directors of the General Partner.

         7A.6    Compliance with ERISA.  The Borrower will, and will cause its
Subsidiaries to, comply in all material respects with the provisions of ERISA
and the Code applicable to the Borrower and its Subsidiaries and their
respective employee benefit programs.

         7A.7    Maintenance and Sufficiency of Properties.

         (i)     The Borrower will maintain or cause to be maintained in good
repair, working order and condition, ordinary wear and tear excepted, all
properties used in the business of the Borrower and its Subsidiaries and from
time to time will make or cause to be made all appropriate repairs, renewals
and replacements thereof, all to the extent necessary to avoid a Material
Adverse Effect.

         (ii)    The Borrower will maintain and will cause to be maintained as
employees of the Borrower and its Subsidiaries such number of individuals,
having appropriate skills, as may be





                                      -53-
<PAGE>   60
necessary from time to time to sustain continuous operation of the Business at
the time.  Except as described on Schedule 8.8 the Borrower will continue and
will cause its  Subsidiaries to continue to own or have valid rights to use all
of the Assets constituting personal or intellectual property (including without
limitation computer equipment, computer software and other intellectual
property) reasonably necessary for the operation of the Business, in each case
subject to no Liens except such as are permitted by Section 7B.3.

         7A.8    Insurance.

         (i)     The Borrower will, and will cause its Subsidiaries to, at its
or their expense, at all times maintain, or cause to be maintained, with
financially sound and reputable insurers, insurance with respect to their
properties and business with coverages comparable to those generally carried by
companies of similar size that conduct the same or similar business and have
similar properties in the same general areas in which the Borrower conducts its
business; provided, however, that the Borrower may maintain a system of
self-insurance in an amount not exceeding an amount as is customary for
companies with established reputations engaged in the same or similar business
and owning and operating similar properties.

         (ii)    The Borrower will, and will cause each of its Subsidiaries to,
pay as and when the same become due and payable the premiums for all insurance
policies that the Borrower and its Subsidiaries are required to maintain
hereunder.

         7A.9    Environmental Laws.  The Borrower will, and will cause each of
its Subsidiaries to:

         (i)     comply with all applicable Environmental Laws and any permit,
license, or approval required under any Environmental Law, except for failures
to so comply which could not reasonably be expected to have a Material Adverse
Effect;

         (ii)    store, use, release, or dispose of any Hazardous Substance at
any property owned or leased by the Borrower or any of its Subsidiaries in a
manner which could not reasonably be expected to have a Material Adverse
Effect;

         (iii)   avoid committing any act or omission which would cause any
Lien to be asserted against any property owned by the Borrower or any of its
Subsidiaries pursuant to any Environmental Law, except where such Lien could
not reasonably be expected to have a Material Adverse Effect;

         (iv)    use, handle or store any propane in compliance, in all
material respects, with all applicable laws.

         7A.10   Operative Agreements.  The Borrower will perform and comply
with all of its obligations under each of the Operative Agreements to which it
is a party, will enforce each such Operative Agreement against each other party
thereto and will not accept the termination of any such Operative Agreement or
any amendment or supplement thereof or modification or waiver





                                      -54-
<PAGE>   61
thereunder, unless any such failure to perform, comply or enforce or any such
acceptance could not, individually or in the aggregate, reasonably be expected
to have a Material Adverse Effect.

         7A.11   After-Acquired Property.  From and after the date of the
Closing, the Borrower will, and will cause each of its Subsidiaries to, execute
and deliver such amendments to the Security Agreement, execute and deliver such
instruments and agreements (including, without limitation, such Certificates
and Stock Powers) and execute and cause to be duly recorded, published,
registered or filed in the appropriate jurisdictions such Financing Statements,
as shall be necessary to grant to the Collateral Agent a valid, perfected,
first priority security interest, subject to Liens permitted by the Security
Agreement in any asset acquired by the Borrower or any Subsidiary of the
Borrower (including, without limitation, the Capital Stock of any Subsidiary)
after the Closing, to the extent such asset would have been included in the
Collateral granted at the Closing had the Borrower or one of its Subsidiaries
owned such asset as of the Closing.  The Borrower will pay or cause to be paid
all taxes, fees and other governmental charges in connection with the
execution, delivery, recording, publishing, registration and filing of such
documents and instruments in such places.

         7A.12   Further Assurances.  At any time and from time to time
promptly, the Borrower shall, at its expense, execute and deliver to each Bank
and the Collateral Agent such instruments and documents, and take such further
action, as the holders of the Notes may from time to time reasonably request,
in order to further carry out the intent and purpose of this Agreement and the
other Loan Documents and to establish, perfect, preserve and protect the
rights, interests and remedies created, or intended to be created, in favor of
the Banks, and including, without limitation, the execution and delivery of
Certificates and the delivery of Stock Powers and the execution, delivery,
recordation and filing of Financing Statements and continuation statements
under the Uniform Commercial Code of any applicable jurisdiction, and the
delivery of satisfactory opinions of counsel.

         7A.13   Books and Accounts.  The Borrower will, and will cause each of
its Subsidiaries to, maintain proper books of record and account in which full,
true and proper entries shall be made of its transactions and set aside on its
books from its earnings for each fiscal year all such proper reserves as in
each case shall be required in accordance with GAAP.

         7A.14   Available Cash Reserves.  The Borrower will maintain an amount
of cash reserves that is necessary or appropriate in the reasonable discretion
of the General Partner to (i) provide for the proper conduct of the business of
the Borrower and its Subsidiaries (including reserves for future capital
expenditures) subsequent to such quarter, (ii) comply with applicable law or
any loan agreement, security agreement, mortgage, debt instrument or other
agreement or obligation to which the Borrower or any Subsidiary is a party or
by which it is bound or its assets are subject (including the Loan Documents)
and (iii) provide funds for distributions to partners of the Master Partnership
and the General Partner in respect of any one or more of the next four
quarters; provided that the General Partner need not establish cash reserves
pursuant to clause (iii) if the effect of such reserves would be that the
Master Partnership is unable to distribute the Minimum Quarterly Distribution
(as defined in the Agreement of Limited Partnership of the Master Partnership)
on all Common Units with respect to such quarter; and provided, further, that
disbursements made by the Borrower or a





                                      -55-
<PAGE>   62
Subsidiary of the Borrower or cash reserves established, increased or reduced
after the end of such quarter but on or before the date of determination of
Available Cash with respect to such quarter shall be deemed to have been made,
established, increased or reduced for purposes of determining Available Cash,
within such quarter if the General Partner so determines.  In addition, without
limiting the foregoing, Available Cash for any fiscal quarter shall reflect
cash reserves equal to (x) 50% of the interest projected to be paid on the
Private Placement Notes in the next succeeding fiscal quarter, plus (y)
beginning with a date three fiscal quarters before a scheduled principal
payment date on the Private Placement Notes, 25% of the aggregate principal
amount thereof due on any such payment date in the third succeeding fiscal
quarter, 50% of the aggregate principal amount due on any such payment date in
the second succeeding fiscal quarter and 75% of the aggregate principal amount
due on any quarterly payment date in the next succeeding fiscal quarter, plus
(z) the Unused Proceeds Reserve as of the date of determination; provided that
the foregoing reserves for amounts to be paid on the Private Placement Notes
shall be reduced by the aggregate amount of advances available to the Borrower
from responsible financial institutions under binding, irrevocable (a) credit
or financing commitments (which are subject to no conditions which the Borrower
is unable to meet) and (b) letters of credit (which are subject to no
conditions which the Borrower is unable to meet), in each case to be used to
refinance such amounts to the extent such amounts could be borrowed and remain
outstanding under Sections 7B.2(ii) and 7B.2(iii).

         7A.15   Parity Debt.

         (i)     The Borrower shall ensure that the lenders from time to time
in respect of any outstanding Parity Debt shall, in the documents governing the
terms of such Indebtedness, (a) recognize the existence and validity of the
obligations represented by the Notes and (b) agree to refrain from making or
asserting any claim that the Loan Documents or the obligations represented by
the Notes are invalid or not enforceable in accordance with its and their terms
as a result of the circumstances surrounding the incurrence of such
obligations.

         (ii)    Each Bank and each other Person that becomes a Bank, as
evidenced by its acceptance of its Notes, (a) acknowledges the existence and
validity of the obligations of the Borrower and Heritage under the Note
Purchase Agreement (and any replacement, extension, renewal, refunding or
refinancing thereof permitted by Section 7B.2, as the case may be) and (b)
agrees to refrain from making or asserting any claim that such obligations or
the instruments governing the terms thereof are invalid or not enforceable in
accordance with its and their terms as a result of the circumstances
surrounding the incurrence of such obligations.

         7B.     Negative Covenants.

         7B.1    Financial Ratios.

         (i)     Ratio of Consolidated EBITDA to Consolidated Interest Expense.
The Borrower will not permit the ratio as of the last day of any fiscal quarter
of the Borrower of Consolidated EBITDA to Consolidated Interest Expense to be
less than (a) 2 to 1 prior to the first anniversary of the Initial Closing Date
or (b) 2.25 to 1 on or after the first anniversary of the Initial Closing Date;





                                      -56-
<PAGE>   63
         (ii)    Ratio of Consolidated Funded Indebtedness to Consolidated
EBITDA.  The Borrower will not permit the ratio as of the last day of any
fiscal quarter of Consolidated Funded Indebtedness to Consolidated EBITDA to
exceed (a) 5.25 to 1 on any date on or prior to August 31, 1997, (b) 5 to 1 on
any date after August 31, 1997 and on or prior to August 31, 1998, (c) 4.75 to
1 on any date after August 31, 1998 and on or prior to February 28, 1999 and
(d) 4.5 to 1 on any date after February 28, 1999;

         Notwithstanding any of the provisions of this Agreement the Borrower
will not, and will not permit any Subsidiary to, enter into any transaction
pursuant to Section 7B.2, clauses (vii), (viii) and (xiv)(b) of Section 7B.3,
Section 7B.6, of clauses (i)(b), (i)(c), (ii)(b) and (iii) of Section 7B.7, (x)
if after giving effect to any such transaction a Noncompliance Event, Default
or Event of Default exists or (y) if the consummation of any such transaction
would result in a violation of any clause of this Section 7B.1 or a
Noncompliance Event, calculated for such purpose as of the date on which such
transaction were to be consummated both immediately before and after giving
effect to the consummation thereof; provided, however, that in the case of
transactions pursuant to Section 7B.7, the calculation shall be made on a pro
forma basis in accordance with GAAP after giving effect to any such
transaction, with the ratio recomputed as at the last day of the most recently
ended fiscal quarter of the Borrower as if such transaction had occurred on the
first day of the relevant four quarter period.

         7B.2    Indebtedness.  The Borrower will not, and will not permit any
of its Subsidiaries to, create, incur, assume, or otherwise become directly or
indirectly liable with respect to, any Indebtedness, except (subject to the
provisions of Section 7B.4):

         (i)     the Borrower may become and remain liable with respect to
Indebtedness evidenced by the Notes and Indebtedness incurred in connection
with any extension, renewal, refunding or refinancing of Indebtedness evidenced
by the Private Placement Notes, provided that the principal amount of such
Indebtedness shall not exceed the principal amount of the Indebtedness
evidenced by the Private Placement Notes, together with any accrued interest
and Yield Maintenance Amount with respect thereto, being extended, renewed,
refunded or refinanced and (y) such Indebtedness may not have an average life
to maturity shorter than the remaining average life to maturity of the
Indebtedness being extended, renewed, refunded or refinanced;

         (ii)    the Borrower may become and remain liable with respect to
Indebtedness incurred under the Working Capital Facility and any Indebtedness
incurred for such purpose which replaces, extends, renews, refunds or
refinances all of such Indebtedness (in the case of a replacement, refunding or
refinancing, so long as the Acquisition Facility also is replaced, refunded or
refinanced in whole; provided that the aggregate principal amount of
Indebtedness permitted under this clause (ii) shall not at any time exceed an
amount equal to (x) $15,000,000 less (y) the amount of Indebtedness, if any,
outstanding under the revolving working capital facility permitted by clause
(v) of this Section 7B.2;

         (iii)   the Borrower may become and remain liable with respect to
Indebtedness incurred by the Borrower under the Acquisition Facility and any
Indebtedness incurred for such purpose





                                      -57-
<PAGE>   64
which replaces, extends, renews, refunds or refinances all of such Indebtedness
(in the case of a replacement refunding or refinancing, so long as the Working
Capital Facility also is replaced, refunded or refinanced in whole); provided
that the aggregate principal amount of Indebtedness permitted under this clause
(iii) shall not at any time exceed the lesser of $35,000,000 or the aggregate
Acquisition Loan Commitments described in Section 10.1, as amended from time to
time;

         (iv)     any Subsidiary of the Borrower may become and remain liable
with respect to Indebtedness of such Subsidiary owing to the Borrower or to a
Wholly-Owned Subsidiary of the Borrower;

         (v)      Heritage Service Corp. may become and remain liable with
respect to Indebtedness incurred under a revolving working capital facility and
any Indebtedness incurred for any permitted purpose which replaces, extends,
renews, refunds or refinances any such Indebtedness, in whole or in part;
provided that the aggregate principal amount of Indebtedness permitted under
this clause (v) shall not at any time exceed $1,000,000;

         (vi)    the Borrower and any of its Subsidiaries may become and remain
liable with respect to Indebtedness relating to any business, property or
assets acquired by or contributed to the Borrower or such Subsidiary or which
is secured by a loan on any property or assets acquired by or contributed to
the Borrower or such Subsidiary to the extent such Indebtedness existed at the
time such business, property or assets were so acquired or contributed, and if
such Indebtedness is secured by such property or assets, such security interest
does not extend to or cover any other property of the Borrower or any of its
Subsidiaries; provided that (a) immediately after giving effect to such
acquisition or contribution, the Borrower could incur at least $1.00 of
additional Indebtedness pursuant to clause (xiii) of this Section 7B.2 and (b)
such Indebtedness was not incurred in anticipation of such acquisition or
contribution;

         (vii)   the Company and any of its Subsidiaries may become and remain
liable with respect to Indebtedness arising from the honoring by a bank or
other financial institution of a check, draft or similar instrument drawn
against insufficient funds in the ordinary course of business, provided that
such Indebtedness is extinguished within 2 Business Days of its incurrence;

         (viii)  M-P Oils Partnership may become and remain liable with respect
to Indebtedness in an aggregate principal amount not to exceed $3,000,000, and
the Borrower may become and remain liable with respect to Guarantees of such
Indebtedness of M-P Oils Partnership and of Indebtedness of Bi State Propane,
provided that the aggregate amount of all Guarantees permitted by this clause
(viii) shall not exceed $5,000,000;

         (ix)    the Borrower may become and remain liable with respect to
Guarantees of the Indebtedness of Bi State Propane and M P Oils Partnership
permitted by clause (v) of this Section 7B.2;





                                      -58-
<PAGE>   65
         (x)     any Person that after the Closing Date becomes a Subsidiary of
the Borrower may become and remain liable with respect to any Indebtedness to
the extent such Indebtedness existed at the time such Person became a
Subsidiary; provided that (a) immediately after giving effect to such Person
becoming a Subsidiary of the Borrower, the Borrower could incur at least $1.00
of additional Indebtedness in compliance with clause (xiii) of this Section
7B.2 and (b) such Indebtedness was not incurred in anticipation of such Person
becoming a Subsidiary of the Borrower;

         (xi)    the Borrower and any of its Subsidiaries may become and remain
liable with respect to Indebtedness owed to any person providing workers'
compensation, health, disability or other employee benefits or property,
casualty or liability insurance to the Borrower or any of its Subsidiaries,
pursuant to reimbursement or indemnification obligations to such person;

         (xii)   the Borrower and any of its Subsidiaries may become and remain
liable with respect to Indebtedness in respect of performance bonds, bid bonds,
appeal bonds, surety bonds and similar obligations, in each case provided in
the ordinary course of business, including those incurred to secure health,
safety and environmental obligations in the ordinary course of business, and
any extension, renewal or refinancing thereof to the extent not provided to
secure the repayment of other Indebtedness and to the extent that the amount of
refinancing Indebtedness is not greater than the amount of Indebtedness being
refinanced;

         (xiii)  the Borrower may become and remain liable with respect to
Indebtedness incurred in respect of Capitalized Lease Obligations; provided,
that the Lien in respect thereof is permitted by clause (viii) of Section 7B.3;
and

         (xiv)   the Borrower and its Subsidiaries may become and remain liable
with respect to unsecured Indebtedness not exceeding $2,000,000 in aggregate
principal amount at any time outstanding, in addition to that otherwise
permitted by the other clauses of this Section 7B.2, if on the date the
Borrower or any of its Subsidiaries becomes liable with respect to any such
additional Indebtedness and immediately after giving effect thereto and to the
substantially concurrent repayment of any other Indebtedness (a) the ratio of
Consolidated EBITDA to Consolidated Debt Service is equal to or greater than
2.50 to 1.0 and (b) the ratio of Consolidated EBITDA to Consolidated Pro Forma
Maximum Debt Service is equal to or greater than 1.25 to 1.0 and (c) no
Default, Event of Default or Noncompliance Event shall exist.

         7B.3    Liens.  The Borrower will not, and will not permit any of its
Subsidiaries to, create, assume, incur or suffer to exist any Lien upon or with
respect to any of its properties or assets, whether now owned or hereafter
acquired, or any income or profits therefrom (whether or not provision is made
for the equal and ratable securing of the Notes in accordance with the
provisions of Section 7A.3), except:

         (i)     Liens existing on the Initial Closing Date hereof on the
property and assets of the Borrower or any of its Subsidiaries as described in
Schedule 7B.3;





                                      -59-
<PAGE>   66
         (ii)    Liens for taxes, assessments or other governmental charges the
payment of which is not yet due and payable or the validity of which is being
contested in good faith in compliance with Section 7A.5;

         (iii)   attachment or judgment Liens not giving rise to an Event of
Default and with respect to which the underlying action has been appealed or is
being contested in good faith in compliance with Section 7A.5;

         (iv)    Liens of lessors, landlords, carriers, vendors, mechanics,
materialmen, warehousemen, repairmen and other like Liens incurred in the
ordinary course of business the payment of which is not yet due or which is
being contested in good faith in compliance with Section 7A.5, in each case not
incurred or made in connection with the borrowing of money, the obtaining of
advances or credit or the payment of the deferred purchase price of property,
provided that such Liens do not materially interfere with the conduct of the
business of the Borrower and its Subsidiaries taken as a whole;

         (v)     Liens (other than any Lien imposed by ERISA) incurred and
pledges and deposits made in the ordinary course of business (a) in connection
with workers' compensation, unemployment insurance, old age pensions, retiree
health benefits and other types of social security, or (b) to secure (or to
obtain letters of credit that do not constitute Indebtedness and that secure)
the performance of tenders, statutory obligations, surety and appeal bonds,
bids, leases, performance bonds, contracts and other similar obligations, in
each case not incurred or made in connection with the borrowing of money or the
obtaining of advances or credit provided that such Liens do not materially
interfere with the conduct of the business of the Borrower and its Subsidiaries
taken as a whole;

         (vi)    zoning restrictions, easements, licenses, reservations,
provisions, covenants, conditions, waivers, restrictions on the use of property
or irregularities of title (and with respect to leasehold interests, mortgages,
obligations, liens and other encumbrances incurred, created, assumed or
permitted to exist and arising by, through or under a landlord or owner of the
leased property, with or without consent of the lessee) which do not in the
aggregate materially detract from the value of its property or assets or
materially impair the use thereof in the operation of its business;

         (vii)   Liens existing on any property of a Person at the time such
Person becomes a Subsidiary of the Borrower or existing at the time of
acquisition upon any property acquired by the Borrower or any of its
Subsidiaries at the time such property is so acquired, through purchase, merger
or consolidation or otherwise (whether or not the Indebtedness secured thereby
shall have been assumed); provided, however, that in the case of any such Lien
(1) such Lien shall at all times be confined solely to any such property and,
if required by the terms of the instrument creating such Lien, other property
which is an improvement to such acquired property, (2) such Lien was not
created in anticipation of such transaction, and (3) the Indebtedness secured
by such Lien shall be permitted under Section 7B.2;





                                      -60-
<PAGE>   67
         (viii)  Liens created to secure all or any part of the purchase price,
or to secure Indebtedness (other than Parity Debt) incurred or assumed to pay
all or any part of the purchase price or cost of construction, of property
acquired or constructed by the Borrower or any of its Subsidiaries after the
Closing Date or to secure obligations incurred in consideration of non-compete
agreements ("Non-Compete Obligations") entered into in connection with any such
acquisition, including an acquisition complying with clause (b)(y) of Section
7B.9; provided that (a) any such Lien shall be confined solely to the item or
items of such property (or improvement thereon) so acquired or constructed and,
if required by the terms of the instrument creating such Lien, other property
(or improvement thereon) which is an improvement to such acquired or
constructed property (and, in the case of any Lien securing Non-Compete
Obligations, shall also be limited to (x) such items of property as acquired
which are not of the character included in the definition of Collateral and (y)
such additional items of the property so acquired, having a total fair market
value (as determined in good faith by the Board of Directors of the General
Partner) for the sum of (x) and (y) that is not more than the amount of the
Non-Compete Obligations so secured), (b) such item or items of property so
acquired and subject to such Lien are not required to become part of the
Collateral under the terms of the Security Agreement, (c) any such Lien shall
be created contemporaneously with, or within 180 days after, the acquisition or
construction of such property, and (d) such Lien does not exceed an amount
equal to 85% of the fair market value (100% in the case of Capitalized Lease
Obligations and 35% in the case of Non-Compete Obligations) of such property
(as determined in good faith by the Board of Directors of the General Partner)
at the time of acquisition thereof and (e) after giving effect to such Lien no
Noncompliance Event, Default or Event of Default shall exist; provided,
however, that the aggregate principal amount at any time outstanding of
Indebtedness secured by Liens permitted by this Section 7B.3(viii) shall not
exceed $10,000,000;

         (ix)    Liens on property or assets of any Subsidiary of the Borrower
securing Indebtedness of such Subsidiary owing to the Borrower or a
Wholly-Owned Subsidiary;

         (x)     leases or subleases of equipment to customers which do not
materially interfere with the conduct of the business of the Borrower and its
Subsidiaries taken as a whole;

         (xi)    easements, exceptions or reservations in any property of the
Borrower or any  Subsidiary granted or reserved for the purpose of pipelines,
roads, the removal of oil, gas, coal or other minerals, and other like
purposes, or for the joint or common use of real property, facilities and
equipment, which are incidental to, and do not materially interfere with, the
ordinary conduct of the business of the Borrower or any of its Subsidiaries;

         (xii)   Liens (other than Liens securing Indebtedness) on the property
or assets of any Subsidiary of the Borrower in favor of the Borrower or any
other Wholly-Owned Subsidiary of the Borrower;

         (xiii)  Liens on the property or assets of Heritage Service Corp.
securing the Indebtedness permitted by clause (v) of Section 7B.2 provided that
(a) any such Lien shall at all times be contained to property or assets having
an aggregate fair market value not exceeding $2,000,000 and (b) such
indebtedness permitted by clause (v) of Section 7B.2 is owed to one or more of
the Banks;





                                      -61-
<PAGE>   68
         (xiv)   Liens created by any of the Security Documents securing (a)
Indebtedness evidenced by the Notes, the Acquisition Credit or the Working
Capital Credit) and (b) Additional Parity Debt; and

         (xv)    any Lien renewing, extending or refunding any Lien permitted
by this Section 7B.3, provided that (a) the principal amount of the
Indebtedness secured by any such Lien shall not exceed the principal amount of
such Indebtedness outstanding immediately prior to the renewal, extension or
refunding of such Lien and (b) no assets encumbered by any such Lien other than
the assets encumbered immediately prior to such renewal, extension or refunding
shall be encumbered thereby.

         Notwithstanding the foregoing, the Borrower will not, and will not
permit any of its Subsidiaries to, create, assume or incur any Lien upon or
with respect to (a) any Subsidiary stock held by the Borrower or any other
Subsidiary of the Borrower, or (b) any of its proprietary software developed by
or on behalf of the Borrower or its Affiliates necessary and useful for the
conduct of the Business.  No Lien permitted under this Section 7B.3 shall
result in over-collateralization except as required by conventional practice
for specific types of borrowings.

         7B.4    Priority Debt.  The Borrower will not permit Priority Debt, at
any time, to exceed the sum of (i) $5,000,000 plus (ii) 10% of the then
Consolidated Tangible Net Worth of the Borrower and its Subsidiaries(but only
to the extent such Consolidated Tangible Net Worth is positive).  The
provisions of this Section 7B.4 are further limitations on Priority Debt that
shall otherwise be permitted by Section 7B.1, 7B.2 or 7B.3.

         7B.5    Loans, Advances, Investments and Contingent Liabilities.  The
Borrower will not, and will not permit any of its Subsidiaries to, directly or
indirectly, purchase or own any stock, obligations or securities of, or any
other interest in, or make any capital contribution to, any Person, make or
permit to remain outstanding any loan or advance to, or guarantee, endorse or
otherwise be or become contingently liable, directly or indirectly, in
connection with the obligations of any Person, or make any other Investment,
except:

         (i)     the Borrower or any of its Subsidiaries may make and own
Investments (w) consisting of Units issued for purposes of making acquisitions,
(x) arising out of loans and advances to employees incurred in the ordinary
course of business, and consisting of advances to pay reimbursable
expenditures, (y) arising out of extensions of trade credit or advances to
third parties in the ordinary course of business and (z) acquired by reason of
the exercise of customary creditors' rights upon default or pursuant to the
bankruptcy, insolvency or reorganization of a debtor;

         (ii)    Guarantees that constitute Indebtedness to the extent
permitted by Sections 7B.1 and 7B.2 and other Guarantees that are not
Guarantees of Indebtedness and are undertaken in the ordinary course of
business;

         (iii)   investment in (collectively, "Cash Equivalents")





                                      -62-
<PAGE>   69
                 (a)      marketable obligations issued or unconditionally
         guaranteed by the United States of America, or issued by any agency
         thereof and backed by the full faith and credit of the United States
         of America, in each case maturing one year or less from the date of
         acquisition thereof,

                 (b)      marketable direct obligations issued by any state of
         the United States of America or any political subdivision of any such
         state or any public instrumentality thereof maturing within one year
         from the date of acquisition thereof and having as at such date the
         highest rating obtainable from either Standard & Poor's Rating Group
         or Moody's Investors Service, Inc.,

                 (c)      commercial paper maturing no more than 270 days from
         the date of creation thereof and having as at the date of acquisition
         thereof one of the two highest ratings obtainable from either Standard
         & Poor's Rating Group or Moody's Investors Service, Inc.,

                 (d)      certificates of deposit maturing one year or less
         from the date of acquisition thereof (1) issued by commercial banks
         incorporated under the laws of the United States of America or any
         state thereof or the District of Columbia or Canada or issued by the
         United States branch of any commercial bank organized under the laws
         of any country in Western Europe or Japan, with capital and
         stockholders' equity of at least $500,000,000 (or the equivalent in
         the currency of such country), (A) the commercial paper or other short
         term unsecured debt obligations of which are as at such date rated
         either A-2 or better (or comparably if the rating system is changed)
         by Standard & Poor's Rating Group or Prime-2 or better (or comparably
         if the rating system is changed) by Moody's Investors Service, Inc. or
         (B) the long-term debt obligations of which are as at such date rated
         either A or better (or comparably if the rating system is changed) by
         Standard & Poor's Rating Group or A2 or better (or comparably if the
         rating system is changed) by Moody's Investors Service,
         Inc.("Permitted Banks") or (2) issued by BOk in an aggregate amount
         for all such certificates of deposit issued by BOk not to exceed
         $1,000,000,

                 (e)      Eurodollar time deposits having a maturity of less
         than 270 days from the date of acquisition thereof purchased directly
         from any Permitted Bank,

                 (f)      bankers' acceptances eligible for rediscount under
         requirements of The Board of Governors of the Federal Reserve System
         and accepted by Permitted Banks, and

                 (g)      obligations of the type described in clause (a), (b),
         (c), (d) or (e) above purchased from a securities dealer designated as
         a "primary dealer" by the Federal Reserve Bank of New York or from a
         Permitted Bank as counterparty to a written repurchase agreement
         obligating such counterparty to repurchase such obligations not later
         than 14 days after the purchase thereof and which provides that the
         obligations which are the subject thereof are held for the benefit of
         the Borrower or any of its Subsidiaries by a custodian which is a
         Permitted Bank and which is not a counterparty to the repurchase
         agreement in question;





                                      -63-
<PAGE>   70
         (iv)    the Borrower or any of its Subsidiaries may acquire Capital
Stock or other ownership interests of a Person (i) located in the United States
of America or Canada, (ii) incorporated or otherwise formed pursuant to the
laws of the United States of America or Canada or any state or province thereof
or the District of Columbia and (iii) engaged in substantially the same
business as the Borrower which Person at the time of such acquisition is, or as
a result thereof becomes, a Subsidiary of the Borrower;

         (v)     the Borrower or any of its Subsidiaries may make and own
Investments (in addition to Investments permitted by clauses (i), (ii), (iii),
and (iv) of this Section 7B.5) in any Person incorporated or otherwise formed
pursuant to the laws of the United States of America or Canada or any state or
province thereof or the District of Columbia; provided, however, that (i) the
sum of (a) the aggregate amount of all such Investments made by the Borrower
and its Subsidiaries following the Closing Date which are outstanding pursuant
to this clause (v) plus (b) all other Investments held by the Borrower and its
Subsidiaries which are outstanding as of the Closing Date and listed on
Schedule 7B.5 shall not at any date of determination exceed $10,000,000 (the
"Investment Limit"); (ii) the representation in Section 8.18 shall be true and
correct as of the date of determination; and (iii) the aggregate amount of all
such Investments made by the Borrower and its Subsidiaries and outstanding
pursuant to this clause (v) in Persons engaged in a business which is not
substantially the same as a line of business described in Section 7B.8 shall
not at any date exceed $3,000,000 and (iv) no Investment pursuant to this
clause (v) may be made unless if after giving effect thereto no Default or
Event of Default exists;

         (vi)    the Borrower may make and become liable with respect to any
Interest Rate Agreements; and

         (vii)   any Subsidiary of the Borrower may make Investments in the
Borrower or in a Wholly-Owned Subsidiary of the Borrower.

         7B.6    Restricted Payments.  The Borrower will not directly or
indirectly declare, order, pay, make or set apart any sum for any Restricted
Payment, except that the Borrower may declare or order, and make, pay or set
apart, during each fiscal quarter a Restricted Payment if (i) such Restricted
Payment together with all other Restricted Payments during such fiscal quarter,
do not in the aggregate exceed the amount of Available Cash with respect to the
immediately preceding quarter, and (ii) no Default, Event of Default or
Noncompliance Event exists before or immediately after any such proposed
action.

         7B.7    Consolidation, Merger, Sale of Assets, etc.  The Borrower will
not, and will not permit any of its Subsidiaries to, directly or indirectly,

         (i)     consolidate with or merge into any other Person or permit any
other Person to consolidate with or merge into it, except that:





                                      -64-
<PAGE>   71
                 (a)      any Subsidiary of the Borrower may consolidate with
         or merge into the Borrower or a Wholly-Owned Subsidiary of the
         Borrower if the Borrower or a Wholly-Owned Subsidiary of the Borrower,
         as the case may be, shall be the surviving Person; and

                 (b)      any entity (other than a Subsidiary of the Borrower)
         may consolidate with or merge into the Borrower or a Subsidiary if the
         Borrower or a Subsidiary of the Borrower, as the case may be, shall be
         the surviving Person and if, immediately after giving effect to such
         transaction, (I) the Borrower and its Subsidiaries (x) shall not have
         a Consolidated Net Worth, determined in accordance with GAAP applied
         on a basis consistent with the consolidated financial statements of
         the Borrower most recently delivered pursuant to Section 7A.1, of less
         than the Consolidated Net Worth of the Borrower immediately prior to
         the effectiveness of such transaction, satisfaction of this
         requirement to be set forth in reasonable detail in an Officers'
         Certificate delivered to each holder of a Note at the time of such
         transaction, and (y) could incur at least $1.00 of additional
         Indebtedness in compliance with Section 7B.1 and clause (xiv) of
         Section 7B.2, (II) substantially all of the assets of the Borrower and
         its Subsidiaries, taken as a whole, shall be located and substantially
         all of their business shall be conducted within the continental United
         States of America or Canada and (III) no Default, Event of Default or
         Noncompliance Event shall exist and be continuing;

         (ii)    sell, lease, abandon or otherwise dispose of all or
substantially all its assets, except that any Subsidiary of the Borrower may
sell, lease or otherwise dispose of all or substantially all its assets to the
Borrower or to a Wholly-Owned Subsidiary of the Borrower; or

         (iii)   sell, lease, convey, abandon or otherwise dispose of
(including, without limitation, in connection with a Sale and Lease-Back
Transaction) any of its assets (except in a transaction permitted by clause
(i)(a), (i)(b), (i)(c), (ii)(a) or (ii)(b) of this Section 7B.7 or sales of
inventory in the ordinary course of business consistent with past practice) or
issue or sell Capital Stock of any Subsidiary of the Borrower, whether in a
single transaction or a series of related transactions (each of the foregoing
non-excepted transactions, an "Asset Sale"), unless:

                 (a)      immediately after giving effect to such proposed
         disposition no Default, Event of Default or Noncompliance Event shall
         exist and be continuing, satisfaction of this requirement to be set
         forth in reasonable detail in an Officer's Certificate delivered to
         each holder of a Note at the time of such transaction in the case of
         any Asset Sale involving assets that generates EBITDA and such Asset
         Sale involves consideration of $250,000 or more;

                 (b)      such sale or other disposition is for cash
         consideration or for consideration consisting of not less than 75%
         cash and not more than 25% interest-bearing promissory notes;
         provided,  that the 75%  limitation referred to in this clause (b)
         shall not apply to any Asset Sale consisting solely of a sale or other
         disposition of land and buildings for an interest bearing promissory
         note as long as the amount of such promissory note does not exceed
         $250,000;

                 (c)      one of the following two conditions must be
         satisfied:





                                      -65-
<PAGE>   72
                          (I)     (x) the aggregate Net Proceeds of all assets
                 so disposed of (whether or not leased back) over the
                 immediately preceding 12-month period does not exceed
                 $3,000,000 and (y) the aggregate Net Proceeds of all assets so
                 disposed of (whether or not leased back) from the Closing Date
                 through the date of such disposition does not exceed
                 $10,000,000; or

                          (II)    in the event that such Net Proceeds (less the
                 amount thereof previously applied in accordance with clause
                 (x) of this clause (c)(II)) exceeds the limitations determined
                 pursuant to clauses (x) and (y) of clause (c)(I) of this
                 Section 7B.7 (such excess amount being herein called "Excess
                 Sale Proceeds"), the Borrower shall within 12 calendar months
                 of the date on which such Net Proceeds exceeded any such
                 limitation, cause an amount equal to such Excess Sale Proceeds
                 to be applied (x) to the acquisition of assets in replacement
                 of the assets so disposed of or of assets which may be
                 productively used in the United States of America or Canada in
                 the conduct of the Business, or (y) to the extent not applied
                 pursuant to the immediately preceding clause (x), to offer to
                 make prepayments on the Notes pursuant to Section 4.2.3 hereto
                 and, allocated on the basis specified for such prepayments in
                 the definition of Allocable Proceeds, to offer to repay other
                 Parity Debt (other than Indebtedness under Section 7B.2(ii) or
                 that by its terms does not permit such offer to be made); and

                 (d)      the Borrower shall have delivered to the Noteholders
         a Certificate of the Board of Directors of the General Partner,
         certifying that such sale or other disposition is for fair value and
         is in the best interests of the Borrower.

         Notwithstanding the foregoing, Asset Sales shall not be deemed to
include (1) any transfer of assets or issuance or sale of Capital Stock by the
Borrower or any of its Subsidiaries to the Borrower or a Wholly-Owned
Subsidiary of the Borrower, (2) any transfer of assets or issuance or sale of
Capital Stock by the Borrower or any of its Subsidiaries to any Person in
exchange for, or the Net Proceeds of which are applied within 12 months to the
purchase of, other assets used in a line of business permitted under Section
7B.8 and having a fair market value (as determined in good faith by the Board
of Directors of the General Partner) not less than that of the assets so
transferred or Capital Stock so issued or sold and (3) any transfer of assets
pursuant to an Investment permitted by Section 7B.5.

         Notwithstanding the foregoing, without the prior written consent of
the Banks, the aggregate Net Proceeds of Asset Sales consummated after the
Initial Closing Date shall not exceed $10,000,000.

         7B.8    Business.  The Borrower will not and will not permit any of
its Subsidiaries to engage in any line of business if as a result thereof the
Borrower and its Subsidiaries would not be principally and predominately
engaged in the Business and related general and administrative operations, as
more fully described in the Memorandum and subject in all respects to the
provisions of clause (iii) of the proviso to Section 7B.5(v).





                                      -66-
<PAGE>   73
         7B.9    Transactions with Affiliates.  The Borrower will not, and will
not permit any of its Subsidiaries to, directly or indirectly, engage in any
transaction with any Affiliate unless (i) (a) such transaction is on fair and
reasonable terms that are no less favorable to the Borrower or such Subsidiary,
as the case may be, than those which would be obtained in an arm's-length
transaction from a Person other than an Affiliate and (b) such transaction is
entered into in the ordinary course of business and pursuant to the reasonable
requirements at the time of the Borrower's or such  Subsidiary's operations, or
(y) such transaction involves the acquisition by the Borrower from the General
Partner of assets formerly owned by an entity, the Capital Stock of which was
purchased by the General Partner, which acquisition is for a substantially
equivalent value as the value of such purchase consummated within ten days
after the consummation of such purchase, as long as such transaction otherwise
would be permitted hereunder had the Borrower acquired such assets directly
from such entity (including, for example, the acquisition by the Borrower from
the General Partner of assets formerly owned by Kingston Propane, Inc.) (ii)
such transaction is in connection with the incurrence of Indebtedness pursuant
to Section 7B.2(viii), (iii) such transaction is in connection with the making
of an Investment pursuant to Section 7B.5(i), (iv) such transaction is a
Restricted Payment permitted by Section 7B.6, (v) such transaction involves
performance under the Contribution Agreement (substantially in the form in
effect on the Closing Date), (vi) such transaction involves indemnification and
contribution under Section 7.7 of the Partnership Agreement (as said section is
in effect on the Closing Date), to the extent such indemnification or
contribution arises from operations or activities in connection with the
Business (including securities issuances in connection with funding the
Business) or (vii) such transaction is a specific transaction described in the
Registration Statement.

         7B.10   Subsidiary Stock and Indebtedness.

         (i)     The Borrower will not permit any of its Subsidiaries directly
or indirectly to issue or sell any Equity Interest of such Subsidiary of the
Borrower to any Person other than the Borrower or a Wholly-Owned Subsidiary of
the Borrower except (a) for the purpose of qualifying directors or (b) in
satisfaction of pre-emptive rights of holders of minority interests which are
triggered by an issuance of Equity Interests to the Borrower or a  Subsidiary
of the Borrower and permit such holders to maintain their pro rata interests.

         (ii)    The Borrower will not directly or indirectly sell, assign,
pledge or otherwise dispose of any Equity Interest in or any Indebtedness of
any of its Subsidiaries, and will not permit any of its Subsidiaries directly
or indirectly to sell, assign, pledge or otherwise dispose of any Equity
Interest in or any Indebtedness of any other Subsidiary of the Borrower except
to the Borrower or a Wholly-Owned  Subsidiary of the Borrower, unless (a)
simultaneously with such sale, transfer or disposition, all of the Equity
Interests (other than an Equity Interest representing less than 2% of the
outstanding Equity Interests of all classes of such Subsidiary taken together,
provided that such Equity Interest is considered an Investment pursuant to
Section 7B.5(v) and is permitted thereunder) or Indebtedness of such Subsidiary
owned by the Borrower and its Subsidiaries is sold, transferred or disposed of
as an entirety, (b) the Board of Directors of the General Partner shall have
determined, as evidenced by a resolution thereof, that the proposed sale,
transfer or disposition of such Equity Interests or Indebtedness is in the best
interests of the Borrower, (c) such Equity Interests or





                                      -67-
<PAGE>   74
Indebtedness are sold, transferred or otherwise disposed of for cash or Cash
Equivalents or other assets used in a line of business permitted by Section 7B
and having a fair market value (as determined in good faith by the Board of
Directors of the General Partner) not less than that of the Equity Interests or
Indebtedness so transferred, to a Person upon terms deemed by the Board of
Directors of the General Partner to be acceptable, (d) the Subsidiary being
sold, transferred or otherwise disposed of shall not have any continuing
investment in the Borrower or any Subsidiary of the Borrower not being so sold,
transferred or disposed and (e) such sale, transfer or disposition is permitted
by Section 7B.7.

         7B.11   Payment of Dividends by  Subsidiaries.  The Borrower will not,
and will not permit any of its Subsidiaries to, be subject to or enter into any
agreement which restricts the ability of any Subsidiary of the Borrower to
declare or pay any dividend to the Borrower, to make any distribution on any
Equity Interest of such  Subsidiary to the Borrower, or to lend money to the
Borrower.

         7B.12   Sales of Receivables.  The Borrower will not, and will not
permit any of its Subsidiaries to, discount, pledge, sell (with or without
recourse), or otherwise sell for less than face value thereof any of its
accounts or notes receivable, except for sales of receivables (i) without
recourse which are seriously past due and which have been substantially written
off as uncollectible or collectible only after extended delays, or (ii) made in
connection with the sale of a business but only with respect to the receivables
directly generated by the business so sold.

         7B.13   Material Agreements; Tax Status.  The Borrower will not:

         (i)     amend or directly or indirectly modify in any manner the
definitions of "Allocable Proceeds" or "Excess Proceeds" of the Note Purchase
Agreement or any similar provisions of any agreement applicable to any
extensions, renewals or refundings thereof as Parity Debt under the provisions
of paragraph 7B.2(i);

         (ii)    amend or modify in any manner adverse to the holders of the
Notes, or grant any waiver or release under (if such action shall be adverse to
the holders of the Notes), any Partnership Document, any notes evidencing
Parity Debt or any agreement relating to Parity Debt or terminate in any manner
any Partnership Document, it being understood, without limitation, that no
modification that reduces principal, interest or fees, premiums, make-wholes or
penalty charges, or extends any scheduled or mandatory payment, prepayment or
redemption of principal or interest, or makes less restrictive any agreement or
releases away any security, or waives any condition precedent or default shall
be adverse to the holders of the Notes for purposes of this Agreement; or

         (iii)   permit the Master Partnership or the Borrower to be treated as
an association taxable as a corporation or otherwise to be taxed as an entity
for federal income tax purposes.


                                  ARTICLE VIII

                   REPRESENTATIONS, COVENANTS AND WARRANTIES





                                      -68-
<PAGE>   75
         The Borrower represents, covenants and warrants as follows:

         8.1     Organization.  The Borrower is a limited partnership duly
organized, validly existing and in good standing under the laws of the State of
Delaware and has all requisite partnership power and authority to own and
operate its properties (including without limitation the assets owned and
operated by it), to conduct its business, to enter into this Agreement and the
other Loan Documents to which it is a party and the Operative Agreements and to
carry out the terms of this Agreement, the Notes, such other Loan Documents and
Operative Agreements.  Each Subsidiary of the Borrower is  duly organized,
validly existing and in good standing under the laws of its state of
organization and has all requisite  power and authority to own and operate its
properties (including without limitation the assets owned and operated by it).

         8.2     Partnership Interests.  The sole general partner of the
Borrower is Heritage, which owns a 1.0101% general partner interest in the
Borrower.  At the Closing Date (a) the only limited partner of the Borrower is
the Master Partnership, which owns a 98.9899% limited partner interest in the
Borrower as provided in the Registration Statement, and (b) the Borrower will
not have any partners other than Heritage and the Master Partnership.  At the
Closing Date, the Borrower does not have any Subsidiary other than the
Subsidiaries of the Borrower as set forth on Schedule 8.2 or any Investments in
any Person (other than as set forth on Schedule 7B.5 or 8.2 or Investments of
the types described in Section 7B.5(i), (ii), (iii) or (vi)).

         8.3     Qualification.  The Borrower is duly qualified or registered
and is in good standing as a foreign limited partnership for the transaction of
business, and each of the Subsidiaries of the Borrower is duly qualified or
registered and is in good standing as a foreign corporation or partnership, as
the case may be, for the transaction of business, in the states and to the
extent listed in Schedule 8.3, and, except as reflected on Schedule 8.3, on the
Closing Date there are no other jurisdictions in which the nature of their
respective activities or the character of the properties they own, lease or use
makes such qualification or registration necessary and in which the failure so
to qualify or to be so registered would have a Material Adverse Effect.  The
Borrower has taken all necessary partnership action to authorize the execution,
delivery and performance by it of this Agreement, the other Financing Documents
to which it is a party and the Operative Agreements.  The Borrower has duly
executed and delivered each of this Agreement, the other Loan Documents and the
Operative Agreements to which it is a party, and each of such documents and
agreements and the Notes and the Security Documents constitute the legal, valid
and binding obligation of the Borrower enforceable against it in accordance
with its terms, except as such enforceability may be limited by bankruptcy,
insolvency, moratorium or similar laws affecting creditors' rights generally
and general principles of equity (regardless of whether such enforceability is
considered in a proceeding in equity or at law).

         8.4     Business; Financial Statements.

         (i)     Prior to the Closing Date, the Borrower caused to be delivered
to the Banks complete and correct copies of (a) the Registration Statement and
(b) the Memorandum.  The pro forma condensed consolidated financial statements
of the Master Partnership set forth in the Registration





                                      -69-
<PAGE>   76
Statement comply as to form in all material respects with the applicable
accounting requirements of the Securities Act and the published rules and
regulations thereunder and the assumptions on which the pro forma adjustments
reflected in such pro forma condensed consolidated financial statements are
based provide a reasonable basis for presenting the significant effects of the
transactions contemplated by such pro forma condensed consolidated financial
statements and such pro forma adjustments give appropriate effect to such
assumptions and are properly applied in such pro forma condensed consolidated
financial statements.

         (ii)    The Borrower has not engaged in any business or activities
prior to the date of this Agreement, except for activities related to its
formation, organization and prospective operations, and the completion of the
Transactions.  Immediately prior to the date of this Agreement each Subsidiary
of the Borrower was engaged in the business indicated on Schedule 8.4.

         (iii)   The Registration Statement contains complete and correct
copies of (a) the audited balance sheets of Heritage as of August 31, 1995 and
August 31, 1994, and the related audited statements of operations and cash
flows for the fiscal years ended August 31, 1995, August 31, 1994 and August
31, 1993 and (b) the unaudited condensed balance sheets of Heritage as of
February 29, 1996 and the related unaudited condensed statements of operations
and cash flows for the three months ended February 29, 1996 and February 29,
1995.  Such financial statements (including any related schedules and notes)
are true and correct in all material respects (subject, as to interim
statements, to changes resulting from audits and year-end adjustments), have
been prepared in accordance with GAAP consistently followed throughout the
periods involved and show all liabilities, direct and contingent, of Heritage
required to be shown in accordance with such principles.  The balance sheets
fairly present the financial condition of Heritage as at the respective dates
thereof, and the results of operations and cash flows fairly present the
results of operations of Heritage and its consolidated cash flows for the
periods indicated.

         (iv)    The Borrower has delivered to you complete and correct copies
of the unaudited pro forma condensed consolidated balance sheet of the Borrower
as of February 29, 1996 giving effect to the Transactions.  Such balance sheet
has been prepared in accordance with GAAP to the extent applicable to such
balance sheet and fairly presents in all material respects the financial
position of the Borrower on a pro forma basis immediately after the
Transactions in accordance with the assumptions disclosed therein at the date
of such balance sheet.

         (v)     The Borrower has caused to be delivered to you true and
correct copies of the documents and other materials listed on Schedule 8.4.

         8.5     Actions Pending.  There is no action, suit, investigation or
proceeding pending or, to the knowledge of the Borrower, threatened against the
Borrower or the General Partner or any of the Subsidiaries of the Borrower, or
any properties or rights of the Borrower or the General Partner or any of the
Subsidiaries of the Borrower, by or before any court, arbitrator or
administrative or governmental body (i) which questions the validity or
enforceability of this Agreement, the Notes, any other Financing Document or
any Operative Agreement or any action to be taken pursuant to





                                      -70-
<PAGE>   77
this Agreement, the Notes, any other Loan Document or any Operative Agreement
or (ii) which could reasonably be expected to result in a Material Adverse
Effect.

         8.6     Changes.  Except as contemplated by this Agreement, the Notes,
the other Financing Documents or the Operative Agreements or as described in
the Registration Statement or the Memorandum, (i) neither the Borrower nor any
of the Subsidiaries of the Borrower has incurred any material liabilities or
obligations, direct or contingent, nor entered into any material transaction,
in each case other than in the ordinary course of business, and (ii) there has
not been any material adverse change in or effect on the business, assets,
financial condition or prospects of the Borrower or any of the Subsidiaries of
the Borrower.

         8.7     Outstanding Indebtedness.  Other than the Credit Obligations
represented by the Notes, neither the Borrower nor any of the Subsidiaries of
the Borrower as set forth on Schedule 8.2 has outstanding any Indebtedness
except as set forth on Schedule 8.7 and any such Indebtedness which is
indicated in Schedule 8.7 to be paid in full on the Closing Date will be paid
in full at the time of Closing.  There exists no default under the provisions
of any instrument evidencing such Indebtedness or of any agreement relating
thereto.  On the Closing Date, no instrument or agreement to which the Borrower
or any of the Subsidiaries of the Borrower is a party or by which the Borrower,
any such Subsidiary, or their respective properties is bound (other than this
Agreement and the Note Purchase Agreement and other than as indicated in
Schedule 8.7) will contain any restriction on the incurrence by the Operating
Partnership or any of the Subsidiaries of the Borrower of additional
Indebtedness.

         8.8     Transfer of Assets and Business; Title to Properties.

         (i)     Except as set forth on Schedule 8.8, the Borrower and the
Subsidiaries of the Borrower will at the Closing Date be in possession of, and
operating in compliance with, all franchises, grants, authorizations,
approvals, licenses, permits, easements, rights-of-way, consents, certificates
and orders (collectively, the "Permits") required (a) to own, lease or use its
properties (including without limitation to own, lease or use the Assets owned,
leased or used by it) and (b) considering all such Permits in the possession
of, and complied with by, the Borrower and its Subsidiaries taken together, to
permit the conduct of the Business as now conducted and proposed to be
conducted, except for those Permits (x) which are routine and administrative in
nature and are expected in the reasonable judgment of the Borrower  to be
obtained or given in the ordinary course of business from time to time after
the Closing Date, and (y) which, if not obtained or given, would not,
individually or in the aggregate, present a reasonable likelihood of having a
Material Adverse Effect,

         (ii)    Except as set forth on Schedule 8.8, on and after the Closing
Date, the Borrower and the Subsidiaries of the Borrower will have, (i) good and
marketable title to, or valid leasehold interests in, all of the Assets
constituting real property except for defects in, or lack of recorded, title
and exceptions to leasehold interests that either alone or in the aggregate
could not reasonably be expected to result in a Material Adverse Effect, and
(ii) good and sufficient title to, or valid rights to use, all of the Assets
constituting personal property reasonably necessary for the operation of such





                                      -71-
<PAGE>   78
personal property as it is used on the date hereof and proposed to be used in
the Business, in each case subject to no Liens except such as are permitted by
Section 7B.3 and Liens, if any, which will be discharged on the Closing Date.
The Assets owned by the Borrower and the Subsidiaries of the Borrower will be
all of the assets and properties reasonably necessary to enable the Borrower
and its Subsidiaries to conduct the Business on the Closing Date.  Subject to
such exceptions as would not, individually or in the aggregate, present a
reasonable likelihood of having a Material Adverse Effect (A) on the date
hereof the Borrower and its Subsidiaries enjoy, peaceful and undisturbed
possession under all leases and subleases necessary in any material respect for
the conduct of the Business, and (B) all such leases and subleases are valid
and subsisting and are in full force and effect.  None of the properties or
assets of the Borrower or any of the Subsidiaries of the Borrower is subject to
any Lien other than Liens that would be permitted to be imposed pursuant to
Section 7B.3 as of the Closing Date, immediately after giving effect to the
Transactions.

         8.9     Taxes.  On the Closing Date each of the Operating Partnership
and its Subsidiaries will have filed all federal, state and other income tax
returns which, to the knowledge of the Borrower, are required to be filed or
will have properly filed for extensions of time for the filing thereof, and has
paid all taxes, assessments and other governmental charges levied upon it or
any of its properties, assets, income or franchises as shown to be due on such
returns, except those which are not past due or are being contested in good
faith in compliance with Section 7A.5.  The Borrower is a limited partnership
not subject to taxation with respect to its income or gross receipts under
applicable state  laws and that is treated as a pass-through entity for U.S.
federal income tax purposes.

         8.10    Compliance with Other Instruments, etc.; Solvency.

         (i)     On the Closing Date, immediately prior to the completion of
the transactions contemplated by this Agreement, the Notes, the other Loan
Documents and the Operative Agreements), neither the Borrower nor any of the
Subsidiaries of the Borrower will be in violation of (a) any provision of its
certificate or articles of incorporation or other constitutive documents or its
by-laws, (b) any provision of any agreement or instrument to which it is a
party or by which any of its properties is bound or (c) any applicable law,
ordinance, rule or regulation of any Governmental Authority or any applicable
order, judgment or decree of any court, arbitrator or Governmental Authority
except (in the case of clauses (b) and (c) above only) for such violations
which would not, individually or in the aggregate, present a reasonable
likelihood of having a Material Adverse Effect.

         (ii)    The execution, delivery and performance of this Agreement, the
Notes, the other Loan Documents and the Operative Agreements, and the
completion of the transactions contemplated by the Registration Statement to
occur prior to the Closing Date (including without limitation the transactions
contemplated by this Agreement, the Notes, the other Loan Documents and the
Operative Agreements) will not violate (a) any provision of the certificate or
articles of incorporation or other constitutive documents or by-laws of the
Borrower, the General Partner or any of the Subsidiaries of the Borrower, (b)
any applicable law, ordinance, rule or regulation of any Governmental Authority
or any applicable order, judgment or decree of any court, arbitrator or





                                      -72-
<PAGE>   79
Governmental Authority, or (c) any provision of any agreement or instrument to
which the Borrower, the General Partner or any of the Subsidiaries of the
Borrower is a party or by which any of its properties is bound.

         (iii)   Upon completion of the transactions contemplated by this
Agreement, the Notes, the other Loan Documents and the Operative Agreements),
none of the Borrower, the General Partner or any Subsidiary of the Borrower
shall (a) be insolvent, (b) be engaged or about to engage in business or a
transaction at a time the Borrower, the General Partner or any Subsidiary of
the Borrower could be viewed as having unreasonably small capital, or (c)
intend to incur, or believe that it would incur, debts that would be beyond its
ability to pay as such debts matured.

         8.11    Governmental Consent.  No consent, approval or authorization
of, or declaration or filing with, any Governmental Authority is required for
the valid execution, delivery and performance of this Agreement, the Notes, the
other Loan Documents or the Operative Agreements.

         8.12    Use of Proceeds.  None of the proceeds of the Loans will be
used, directly or indirectly, for the purpose, whether immediate, incidental or
ultimate, of purchasing or carrying any margin stock (as defined in Section
8.17 hereof) or for the purpose of maintaining, reducing or retiring any
indebtedness which was originally incurred to purchase or carry any stock that
is currently a margin stock or for any other purpose which might constitute
this transaction a "purpose credit" within the meaning of such Regulation U or
X.  The Borrower nor anyone acting on their respective behalfs has taken or
will take any action which might cause this Agreement or the Notes to violate
Regulation U, Regulation T or any other regulation of the Board of Governors of
the Federal Reserve System or to violate the Exchange Act, in each case as in
effect now or as the same may hereafter be in effect.

         8.13    ERISA.  The Borrower and their respective ERISA Affiliates is
in compliance in all material respects with the applicable provisions of ERISA
and the Code and the regulations and published interpretations thereunder.  No
ERISA Event has occurred or is reasonably expected to occur that, when taken
together with all other such ERISA Events, could reasonably be expected to
result in a Material Adverse Effect.  The present value of all benefit
liabilities under each Plan (based on those assumptions used for purposes of
Statement of Financial Accounting Standards No. 87) did not, as of the last
annual valuation date applicable thereto, exceed by more than  $2,000,000  the
fair market value of the assets of such Plan, and the present value of all
benefit liabilities of all underfunded Plans (based on those assumptions used
for purposes of Statement of Financial Accounting Standards No. 87) did not, as
of the last annual valuation dates applicable thereto, exceed by more than
$2,000,000  the fair market value of the assets of all such underfunded Plans.

         8.14    Environmental Compliance.

         (i)     Except where the failure to be in compliance could not present
a reasonable likelihood of having a Material Adverse Effect, as of the date
hereof the Borrower and each Subsidiary of the Borrower is in compliance with
all Environmental Laws applicable to it and to the Business or Assets.  The
Borrower and each Subsidiary of the Borrower is in compliance with all
franchises,





                                      -73-
<PAGE>   80
grants, authorizations, permits, licenses, and approvals required under
Environmental Laws, except for any non-compliance or failure to obtain such
Permits which could not reasonably be expected to have a Material Adverse
Effect.  The Borrower has caused Heritage to submit timely and complete
applications to renew any expired or expiring Permits required pursuant to any
Environmental Law, except for any non-compliance or failure to obtain such
permits which could not reasonably be expected to have a Material Adverse
Effect.  All reports, documents, or other submissions required by Environmental
Laws to be submitted by the Borrower to any Governmental Authority or Person
have been filed by or on behalf of the Borrower, except where the failure to do
so would not present a reasonable likelihood of having a Material Adverse
Effect.

         (ii)  (a)        There is no Hazardous Substance present at any of the
real property currently owned or leased by the Borrower or any of the
Subsidiaries of the Borrower except to the extent that such presence could not
reasonably be expected to have a Material Adverse Effect, and (b) to the
knowledge of the Borrower, there was no Hazardous Substance present at any of
the real property formerly owned or leased by Heritage during the period of
ownership or leasing by such Person; and with respect to such real property and
subject to the same knowledge and temporal qualifiers concerning Hazardous
Substances with respect to formerly owned or leased real properties, there has
not occurred (x) any release, or to the knowledge of the Borrower, any
threatened release of a Hazardous Substance, or (y) any discharge or, to the
knowledge of the Borrower, any threatened discharge of any Hazardous Substance
into the ground, surface or navigable waters which discharge or threatened
discharge violates any federal, state, local or foreign laws, rules or
regulations concerning water pollution.

         (iii)   Neither the Borrower nor any of the Subsidiaries of the
Borrower has disposed of, transported, or arranged for the transportation or
disposal of any Hazardous Substance where such disposal, transportation, or
arrangement would give rise to liability pursuant to CERCLA or any analogous
state statute other than any such liabilities that could not reasonably be
expected to have a Material Adverse Effect.

         (iv)    Except as disclosed to the Banks in writing, (a) no Lien has
been asserted by any Governmental Authority or person resulting from the use,
spill, discharge, removal, or remediation of any Hazardous Substance with
respect to any real property currently owned or leased by Heritage or the
Borrower, and (b) to the knowledge of the Borrower, no such Lien was asserted
with respect to any of the real property formerly owned or leased by Heritage
during the period of ownership or leasing of the real property by such Person.

         (v)  (a)  There are no underground storage tanks, asbestos-containing
materials, polychlorinated biphenyls, or urea formaldehyde insulation at any of
the real property currently owned or leased by the Borrower in violation of any
Environmental Law, and (b) to the knowledge of the Borrower, there were no
underground storage tanks, asbestos-containing materials, polychlorinated
biphenyls, or urea formaldehyde insulation at any of the real property formerly
owned or leased by Heritage in violation of any Environmental Law during the
period of ownership or leasing of such real property by such Person.





                                      -74-
<PAGE>   81
         (vi)    As of the date hereof, any propane is stored, used and handled
by the Borrower and the Subsidiaries of the Borrower in compliance with all
applicable Environmental Laws except for any storage, use or handling of
propane that could not reasonably be expected to have a Material Adverse
Effect.

         8.15    Pre-emptive Rights.  There are no pre-emptive rights to which
a holder of a minority interest in any Subsidiary of the Borrower is entitled.

         8.16    Disclosure.  This Agreement, the Notes, the other Loan
Documents, the Operative Agreements, the Memorandum and any other document,
certificate or statement furnished to any Bank by or on behalf of the Borrower,
the General Partner or their respective Subsidiaries or Affiliates, in
connection herewith, taken together, do not contain and the Registration
Statement does not contain any untrue statement of a material fact or omit to
state a material fact necessary in order to make the statements contained
herein and therein, in light of the circumstances under which they were made,
not misleading.  There is no fact known to the Borrower which has or in the
future could reasonably be expected to have (so far as the Borrower can now
foresee) a Material Adverse Effect and which has not been set forth in this
Agreement or in the other documents, certificates and statements furnished to
each the Banks hereunder by or on behalf of the Borrower.

         8.17    Federal Reserve Regulations.  Neither the Borrower nor the
Subsidiary of the Borrower will, directly or indirectly, use any of the
proceeds of any Loan for the purpose, whether immediate, incidental or
ultimate, of buying a "margin stock" or of maintaining, reducing or retiring
any indebtedness originally incurred to buy a stock that is currently a "margin
stock", or for any other purpose which might constitute this transaction a
"purpose credit" which is secured "directly or indirectly by margin stock", in
each case within the meaning of Regulation U of the Board of Governors of the
Federal Reserve System (12 C.F.R. 207, as amended), or otherwise take or permit
to be taken any action which would involve a violation of such Regulation U or
of Regulation X (12 C.F.R. 224, as amended) or any other applicable regulation
of such Board.  No indebtedness being retired, directly or indirectly, out of
the proceeds of the Loans will be incurred for the purpose of buying or
carrying any stock which is currently a "margin stock", and the Borrower
neither owns or has any present intention of acquiring any amount of such
"margin stock".

         8.18    Investment Borrower Act.  None of the Borrower or any
Subsidiary of the Borrower is an "investment Borrower", or a Borrower
"controlled" by an "investment Borrower", within the meaning of the Investment
Borrower Act of 1940, as amended.

         8.19    Public Utility Holding Company Act.  The Borrower, the General
Partner and each Subsidiary of the Borrower is exempt from all of the
provisions of the Public Utility Holding Company Act of 1935, as amended (the
"PUHCA") and the rules thereunder other than Section 9(a)(2) thereof based upon
a no-action letter from the Commission dated June 19, 1996.

         8.20    Matters Relating to the General Partner.  Immediately after
the Transactions, the ownership of the Borrower and the Master Partnership
shall be, in all material respects, as described in the Registration Statement.
Heritage will own, in addition to the interest described in Section 8.3,





                                      -75-
<PAGE>   82
a 1% general partner interest in the Master Partnership and 3,702,943
Subordinated Units, representing a 47.0% limited partner interest in the Master
Partnership and the Borrower on a combined basis, if no overallotment option is
exercised by the Underwriters or  representing a 43.6% limited partnership
interest in the Master Partnership and the Borrower on a combined basis, if the
overallotment option is exercised in full by the Underwriters.


                                   ARTICLE IX

                               EVENTS OF DEFAULT

         9.1     Acceleration.  If any of the following conditions or events
("Events of Default") shall occur and be continuing for any reason whatsoever
(and whether such occurrence shall be voluntary or involuntary or come about or
be effected by operation of law or otherwise):

         (i)     the Borrower defaults in the payment of any principal of on
any Note when the same becomes due and payable, either by the terms thereof or
otherwise as herein provided; or

         (ii)    the Borrower defaults in the payment of any interest on any
Note for more than 5 days after the same becomes due and payable; or

         (iii)   the Borrower or any Subsidiary of the Borrower (whether as
primary obligor or as guarantor or other surety) defaults in any payment of
principal of or interest on any Parity Debt or any other Indebtedness other
than the Notes (including without limitation any Capitalized Lease Obligation,
any obligation under a conditional sale or other title retention agreement, any
obligation issued or assumed as full or partial payment for property whether or
not secured by a purchase money mortgage or any obligation under notes payable
or drafts accepted representing extensions of credit), beyond any period of
grace provided with respect thereto, or the Borrower or any Subsidiary of the
Borrower fails to perform or observe any other agreement or term or condition
contained in any agreement under which any such obligation is created (or if
any other event thereunder or under any such agreement shall occur and be
continuing) and the effect of such failure or other event is to cause, or to
permit the holder or holders of such Indebtedness (or a trustee on behalf of
such holder or holders) to cause, such obligation to become due or to be
repurchased prior to any stated maturity, provided that the aggregate amount of
all Indebtedness as to which such a default (payment or other) shall occur and
be continuing or such a failure or other event causing or permitting
acceleration (or resale to the Borrower or any Subsidiary of the Borrower)
shall occur and be continuing exceeds $2,000,000; provided, further, that no
waiver, modification or amendment relating to any such a default (payment or
other) or such a failure or other event with respect to any Parity Debt or
agreement or instrument relating to any Parity Debt shall be effective for
purposes of this clause (iii) if any consideration (other than the payment of
reasonable attorney's fees) is given, directly or indirectly, by the Borrower
or any of its Subsidiaries or Affiliates in respect thereof, unless
substantially the same consideration is given to the holders of the Notes; or





                                      -76-
<PAGE>   83
         (iv)    any representation or warranty made in any writing by or on
behalf of the Borrower, General Partner or the Master Partnership in this
Agreement, any other Loan Document or any instrument furnished pursuant to this
Agreement or any Loan Document shall prove to have been false or incorrect in
any material respect on the date as of which made; or

         (v)     the Borrower fails to perform, observe or comply with any
agreement contained in Sections 7B.1 through 7B.13; or

         (vi)    the Borrower fails to perform or observe any other agreement,
term or condition contained in this Agreement or the other Loan Documents and
such failure shall not be remedied within 30 days after any Responsible Officer
obtains actual knowledge or notice thereof; or

         (vii)   the General Partner, the Borrower or any Significant
Subsidiary Group makes an assignment for the benefit of creditors or is
generally not paying its debts as such debts become due; or

         (viii)  any decree or order for relief in respect of the General
Partner, the Borrower or any Significant Subsidiary Group is entered under any
bankruptcy, reorganization, compromise, arrangement, insolvency, readjustment
of debt, dissolution or liquidation or similar law, whether now or hereafter in
effect (herein called the "Bankruptcy Law"), of any jurisdiction; or

         (ix)    the General Partner, the Borrower or any Significant
Subsidiary Group petitions or applies to any tribunal for, or consents to, the
appointment of, or taking possession by, a trustee, receiver, custodian,
liquidator or similar official of the General Partner, the Borrower or any
Significant Subsidiary Group , or of any substantial part of the assets of the
General Partner, the Borrower or any Significant Subsidiary Group, or commences
a voluntary case under the Bankruptcy Law of the United States or any
proceedings (other than proceedings for the voluntary liquidation and
dissolution of the General Partner, the Borrower or any Significant Subsidiary
Group) relating to the General Partner, the Borrower or any Significant
Subsidiary Group under the Bankruptcy Law of any other jurisdiction; or

         (x)     any such petition or application is filed, or any such
proceedings are commenced, against the General Partner, the Borrower or any
Significant Subsidiary Group and the General Partner, the Borrower or any
Significant Subsidiary Group by any act indicates its approval thereof,
consents thereto or acquiesces therein, or an order, judgment or decree is
entered appointing any such trustee, receiver, custodian, liquidator or similar
official, or approving the petition in any such proceedings, and such order,
judgment or decree remains unstayed and in effect for more than 30 days; or

         (xi)    a judgment or judgments for the payment of money in excess of
$2,000,000 in the aggregate (except to the extent covered by insurance as to
which the insurer has acknowledged in writing its obligation to cover in full)
shall be rendered against the Borrower or any Subsidiary of the Borrower and
either (i) enforcement proceedings have been commenced by any creditor upon
such judgment or order or (ii) within 45 days after entry thereof, such
judgment is not discharged





                                      -77-
<PAGE>   84
or execution thereof stayed pending appeal, or within 45 days after the
expiration of any such stay, such judgment is not discharged; or

         (xii)   any order, judgment or decree is entered in any proceedings
against the General Partner, the Borrower or any Significant Subsidiary Group
decreeing the dissolution of the General Partner, the Borrower or any
Significant Subsidiary Group and such order, judgment or decree remains
unstayed and in effect for more than 30 days or any other event occurs that
results in the termination, dissolution or winding up of the Borrower, subject
to Section 7B.7, the General Partner or any Significant Subsidiary Group; or

         (xiii)  any order, judgment or decree is entered in any proceedings
against the Borrower or any of its Subsidiaries decreeing a split-up of the
Borrower or such Subsidiary which requires the divestiture of assets
representing a substantial part, or the divestiture of the stock of a
Subsidiary of the Borrower whose assets represent a substantial part of the
consolidated assets of the Borrower and its Subsidiaries (determined in
accordance with GAAP) or which requires the divestiture of assets, or stock of
a Subsidiary of the Borrower, which shall have contributed a substantial part
of the Consolidated Net Income of the Borrower and its Subsidiaries for any of
the three fiscal years then most recently ended, and such order, judgment or
decree shall not be dismissed or execution thereon stayed pending appeal or
review within 45 days after entry thereof, or in the event of such a stay, such
order, judgment or decree shall not be dismissed within 45 days after such stay
expires; or

         (xiv)   any of the Security Documents shall at any time, for any
reason cease to be in full force and effect or shall fail to constitute a
valid, perfected first priority Lien with respect to the Collateral subject to
Liens permitted by the Security Agreement or shall be declared to be null and
void in whole or in any material respect (i.e., relating to the validity or
priority of the Liens created by the Security Documents or the remedies
available thereunder) by the judgment of any court or other Governmental
Authority having jurisdiction in respect thereof, or if the validity or the
enforceability of any of the Security Documents shall be contested by or on
behalf of the Borrower, or the Borrower shall renounce any of the Security
Documents, or deny that it is bound by the terms of any of the Security
Documents; or

         (xv)    (a)  the General Partner shall be engaged in any business or
activities other than those permitted by the Partnership Agreement as in effect
on the Closing Date, or (b) the General Partner ceases to be the sole general
partner of the Borrower or the Master Partnership, or (c) Current Management
shall own, directly or indirectly, less than 51% of the Capital Stock of the
General Partner; or

         (xvi)   an ERISA Event shall have occurred that, when taken together
with all other such ERISA Events that have occurred, could reasonably be
expected to result in liability of the Borrower and its ERISA Affiliates in an
aggregate amount exceeding $2,000,000; or

         (xvii)  an event of default under any of the Security Documents has
occurred and is continuing.





                                      -78-
<PAGE>   85
         9.2     Remedies.  Upon the occurrence of any Event of Default
referred to in (viii), (ix) or (x) of this Section 9.1 the Commitments shall
immediately terminate and the Notes and all other Indebtedness shall be
immediately due and payable, without further notice of any kind.  Upon the
occurrence of any other Event of Default, and without prejudice to any right or
remedy of the Banks under this Agreement or the Loan Documents or under
applicable Law of under any other instrument or document delivered in
connection herewith, the Banks may (i) declare the Commitments terminated or
(ii) declare the Commitments terminated and declare the Notes and the other
Indebtedness, or any part thereof, to be forthwith due and payable, whereupon
the Notes and the other Indebtedness, or such portion as is designated by the
Banks shall forthwith become due and payable, without presentment, demand,
notice or protest of any kind, all of which are hereby expressly waived by the
Borrower.  No delay or omission on the part of the Banks in exercising any
power or right hereunder or under the Notes, the Loan Documents or under
applicable law shall impair such right or power or be construed to be a waiver
of any default or any acquiescence therein, nor shall any single or partial
exercise by the Banks of any such power or right preclude other or further
exercise thereof or the exercise of any other such power or right by the Banks.
In the event that all or part of the Indebtedness becomes or is declared to be
forthwith due and payable as herein provided, the Banks shall have the right to
set off the amount of all the Indebtedness of the Borrower owing to the Banks
against, and shall have, and is hereby granted by the Borrower, a lien upon and
security interest in, all property of each of the Borrower in the Banks'
possession at or subsequent to such default, regardless of the capacity in
which the Banks possess such property, including but not limited to any balance
or share of any deposit, collection or agency account.  After Default all
proceeds received by the Banks may be applied to the Indebtedness in such order
of application and such proportions as the Banks, in their discretion, shall
choose.  At any time after the occurrence of any Event of Default, the Banks
may, at their option, cause an audit of any and/or all of the books, records
and documents of the Borrower to be made by auditors satisfactory to the Banks
at the expense of the Borrower.  The Banks also shall have, and may exercise,
each and every right and remedy granted to them for default under the terms of
the Security Documents and the other Loan Documents.

         9.3     Other Remedies.  If any Event of Default or Default shall
occur and be continuing, the holder of any Note may proceed to protect and
enforce its rights under this Agreement and such Note by exercising such
remedies as are available to such holder in respect thereof under applicable
law, either by suit in equity or by action at law, or both, whether for
specific performance of any covenant or other agreement contained in this
Agreement or in aid of the exercise of any power granted in this Agreement.  No
remedy conferred in this Agreement upon the holder of any Note is intended to
be exclusive of any other remedy, and each and every such remedy shall be
cumulative and shall be in addition to every other remedy conferred herein or
now or hereafter existing at law or in equity or by statute or otherwise.





                                      -79-
<PAGE>   86
                                   ARTICLE X

                                LOAN OPERATIONS

         10.1    Interests in Loans/Commitments.  The percentage interest of
each Bank in the Loans and Letters of Credit, and the Commitments, shall be
computed based on the maximum principal amount for each Bank as follows:

<TABLE>
<CAPTION>
                                Maximum               Maximum Working             Maximum
                              Acquisition                 Capital               Commitments       Percentage
 Bank                      Loan Commitments           Loan Commitments            Amount           Interest
 ----                      ----------------           ----------------            ------           --------
 <S>                          <C>                       <C>                     <C>                <C>
 BOk                          $12,500,000               $ 7,500,000             $24,000,000         50.00%
 Bank of Boston               $12,500,000               $ 7,500,000             $24,000,000         50.00%
                               ----------                ----------              ----------         ----- 

 Total                        $25,000,000               $15,000,000             $40,000,000        100.00%
</TABLE>

The foregoing percentage interests, as from time to time in effect and
reflected in the Register, are referred to as the "Percentage Interests" with
respect to all or any portion of the Loans and Letters of Credit, and the
Commitments.

         10.2    Administrative Agent's Authority to Act.  Each of the Banks
appoints and authorizes Bank of Boston to act for the Banks as Administrative
Agent in connection with the transactions contemplated by this Agreement and
the other Loan Documents on the terms set forth herein.  In acting hereunder,
the Administrative Agent is acting for the account of Bank of Boston to the
extent of its Percentage Interest and for the account of each other Bank to the
extent of such Bank's Percentage Interest, and all action in connection with
the enforcement of, or the exercise of any remedies (other than the Banks'
rights of set-off as provided herein or in any other Loan Document) in respect
of the Loans and the Indebtedness shall be taken by the Administrative Agent.

         10.3    Borrower to Pay Administrative Agent.  The Borrower shall be
fully protected in making all payments in respect of the Notes evidencing the
Credit Obligations to the Administrative Agent, in relying upon consents,
modifications and amendments executed by the Administrative Agent purportedly
on the Banks' behalf, and in dealing with the Administrative Agent as herein
provided.  Upon three (3) Business Days notice, the Administrative Agent may
charge the accounts of the Borrower, on the dates when the amounts thereof
become due and payable, with the amounts of the principal of and interest on
the Loans, including any amounts paid by the Administrative Agent to third
parties under Letters of Credit or drafts presented thereunder, commitment
fees, Letter of Credit issuance fees and processing/application fees pertaining
thereto and all other fees and amounts owing under any Loan Document.





                                      -80-
<PAGE>   87
         10.4    Bank Operations for Advances, Letters of Credit.

                 10.4.1  Advances.  On the funding date for each Loan, each
         Bank shall advance to the Administrative Agent in immediately
         available funds such Bank's Percentage Interest in the portion of a
         Loan advanced on such funding date prior to 12:00 noon (Boston,
         Massachusetts time).  If such funds are not received at such time, but
         all applicable conditions set forth in Article VI have been satisfied,
         each Bank authorizes and requests the Administrative Agent to advance
         for the Bank's account, pursuant to the terms hereof, the Bank's
         respective Percentage Interest in such portion of such Loan and agrees
         to reimburse the Administrative Agent in immediately available funds
         for the amount thereof prior to 3:00 p.m. (Boston, Massachusetts time)
         on the day any portion of such Loan is advanced hereunder; provided,
         however, that the Administrative Agent is not authorized to make any
         such advance for the account of any Bank who has previously notified
         the Administrative Agent in writing that such Bank will not be
         performing its obligations to make further advances hereunder; and
         provided, further, that the Administrative Agent shall be under no
         obligation to make any such advance.

                 10.4.2  Letters of Credit.  Each of the Banks authorizes and
         requests each Letter of Credit Issuer to issue the Letters of Credit
         provided for in Section 2.3 and agrees to purchase a participation in
         each of such Letters of Credit in an amount equal to its Percentage
         Interest in the amount of each such Letter of Credit.  Promptly upon
         the request of any Letter of Credit Issuer, each Bank shall reimburse
         such Letter of Credit Issuer in immediately available funds for such
         Bank's Percentage Interest in the amount of all obligations to third
         parties incurred by the Letter of Credit Issuer in respect of each
         Letter of Credit and each draft accepted under a Letter of Credit to
         the extent not timely reimbursed by the Borrower.  Each Letter of
         Credit Issuer will notify each Bank (and the Administrative Agent if
         the Administrative Agent is not the Letter of Credit Issuer) of the
         issuance of each Letter of Credit, the amount and date of payment of
         any draft drawn or accepted under a Letter of Credit and whether in
         connection with the payment of any such draft the amount thereof was
         added to the Working Capital Loan or was reimbursed by the Borrower.

                 10.4.3  Administrative Agent to Allocate Payments. All
         payments of principal and interest in respect of the extensions of
         credit made pursuant to this Agreement, reimbursement of amounts paid
         by each Letter of Credit Issuer to third parties under Letters of
         Credit or drafts presented thereunder, commitment fees, Letter of
         Credit issuance fees and other fees under this Agreement (except for
         the standard Letter of Credit application/processing fees of any
         Letter of Credit Issuer and any fees due to either Agent pursuant to
         the Administrative Agent's Fee Letter or the Facilitating Agent's Fee
         Letter, as the case may be), which shall not be shared by the Banks
         shall, as a matter of convenience, be made by the Borrower to the
         applicable Letter of Credit Issuer or the applicable Agent, as the
         case may be.  The share of each Bank shall be credited to such Bank by
         the Administrative Agent in immediately available funds in such manner
         that the principal amount of the Loans constituting Credit Obligations
         to be paid shall be paid proportionately in accordance with the Banks'
         respective Percentage Interests in such Loans, except as





                                      -81-
<PAGE>   88
         otherwise provided in this Agreement. Under no circumstances shall any
         Bank be required to produce or present its Notes as evidence of its
         interests in the Loans constituting Credit Obligations in any action
         or proceeding relating to the Loans constituting Credit Obligations.

                 10.4.4  Delinquent Banks; Nonperforming Banks.  In the event
         that any Bank fails to reimburse the Administrative Agent pursuant to
         Section 10.4.1 for the Percentage Interest of such Bank (a "Delinquent
         Bank") in any credit advanced by the Administrative Agent pursuant
         hereto, overdue amounts (the "Delinquent Payment") due from the
         Delinquent Bank to the Administrative Agent shall bear interest,
         payable by the Delinquent Bank on demand, at a per annum rate equal to
         (a) the Federal Funds Rate for the first three days overdue and (b)
         the sum of two percentage points (2%) plus the Federal Funds Rate for
         any longer period.  Such interest shall be payable to the
         Administrative Agent for its own account for the period commencing on
         the date of the Delinquent Payment and ending on the date the
         Delinquent Bank reimburses the Administrative Agent on account of the
         Delinquent Payment (to the extent not paid by the Borrower as provided
         below) and the accrued interest thereon (the "Delinquency Period"),
         whether pursuant to the assignments referred to below or otherwise.
         Upon notice by the Administrative Agent, the Borrower will pay to the
         Administrative Agent the principal (but not the interest) portion of
         the Delinquent Payment.  During the Delinquency Period, in order to
         make reimbursements for the Delinquent Payment and accrued interest
         thereon, the Delinquent Bank shall be deemed to have assigned to the
         Administrative Agent all interest, commitment fees and other payments
         made by the Borrower under Articles II, III and IV hereof that would
         have thereafter otherwise been payable under the Loan Documents to the
         Delinquent Bank.  During any other period in which any Bank is not
         performing its obligations to extend credit under Article II hereof (a
         "Nonperforming Bank"), the Nonperforming Bank shall be deemed to have
         assigned to each Bank that is not a Nonperforming Bank (a "Performing
         Bank") all principal and other payments made by the Borrower that
         would have thereafter otherwise been payable thereunder to the
         Nonperforming Bank.  The Administrative Agent shall credit a portion
         of such payments to each Performing Bank in an amount equal to the
         Percentage Interest of such Performing Bank in an amount equal to the
         Percentage Interest of such Performing Bank divided by one minus the
         Percentage Interest of the Nonperforming Bank until the respective
         portions of the Loans owed to all the Banks are the same as the
         Percentage Interests of the Banks immediately prior to the failure of
         the Nonperforming Bank to perform its obligations under Article II
         hereof.  The foregoing provisions shall be in addition to any other
         remedies the Agent, the Performing Banks or the Borrower may have
         under law or equity against the Delinquent Bank as a result of the
         Delinquent Payment or against the Nonperforming Bank as a result of
         its failure to perform its obligations under Article II hereof.

         10.5    Sharing of Payments.  To the extent permitted by applicable
Bank Legal Requirements and subject to the provisions of the Intercreditor
Agreement, each Bank agrees that (i) if by exercising any right of set-off or
counterclaim or otherwise, it shall receive payment of (a) a proportion of the
aggregate amount due with respect to its Percentage Interest in the Loans and
Letter of Credit Exposure which is greater than (b) the proportion received by
any other Bank in





                                      -82-
<PAGE>   89
respect of the aggregate amount due with respect to such other Bank's
Percentage Interest in the Loans and Letter of Credit Exposure and (ii) if such
inequality shall continue for more than 10 days, the Bank receiving such
proportionately greater payment shall purchase participations in the Percentage
Interests in the Loans and Letter of Credit Exposure held by the other Banks,
and such other adjustments shall be made from time to time (including
rescission of such purchases of participations in the event the unequal payment
originally received is recovered from such Bank through bankruptcy proceedings
or otherwise), as may be required so that all such payments of principal and
interest with respect to the Loans and Letter of Credit Exposure held by the
Banks shall be shared by the Banks pro rata in accordance with their respective
Percentage Interests; provided, however, that this Section 10.5 shall not
impair the right of any Bank to exercise any right of set-off or counterclaim
it may have and to apply the amount subject to such exercise to the payment of
Indebtedness of Borrower other than Borrower's Indebtedness with respect to the
Loans and Letter of Credit Exposure.  Each Bank that grants a participation in
the Loans and Commitments to a Credit Participant shall require as a condition
to the granting of such participation that such Participant agree to share
payments received in respect of the Indebtedness as provided in this Section
10.5.  The provisions of this Section 10.5 are for the sole and exclusive
benefit of the Banks and no failure of any Bank to comply with the terms hereof
shall be available to either Borrower as a defense to the payment of the Loans.

         10.6    Amendments, Consents, Waivers.  Except as otherwise set forth
herein, the Agents may (and upon the written request of the Required Banks the
Administrative Agent shall) take or refrain from taking any action under this
Agreement or any other Loan Document, including giving its written consent to
any modification of or amendment to and waiving in writing compliance with any
covenant or condition in this Agreement or any other Loan Document or any
Default or Event of Default, all of which actions shall be binding upon all of
the Banks; provided, however, that:

         (i)     Without the written consent of the Banks owning at least two
thirds (2/3) of the Percentage Interests (other than Delinquent Banks during
the existence of a Delinquency Period so long as such Delinquent Bank is
treated the same as the other Banks with respect to any actions enumerated
below), no written modification of, amendment to, consent with respect to,
waiver of compliance with or waiver of a Default under, any of the Loan
Documents shall be made, including without limitation, Sections 7B.1 through
7B.15 of this Agreement, the related defined terms or this Section 10.6(a)
shall be made.

         (ii)    Without the written consent of such Banks as own 100% of the
Percentage Interests (other than Delinquent Banks during the existence of a
Delinquency Period so long as such Delinquent Bank is treated the same as the
other Banks with respect to any actions enumerated below):

                 (a)      No reduction shall be made in (A) the amount of
         principal of any of the Loans or reimbursement obligations for
         payments made under Letters of Credit, (B) the interest rate on the
         Loans or (C) the Letter of Credit issuance fees (excluding, however,
         Letter of Credit processing/application fees, the amount of which
         shall be within the sole discretion of each Letter of Credit Issuer)
         or commitment (non-usage) fees.





                                      -83-
<PAGE>   90
                 (b)      No change shall be made in the stated time of payment
         of all or any portion of any of the Loans or interest thereon or
         reimbursement of payments made under Letters of Credit or fees
         relating to any of the foregoing payable to all of the Banks and no
         waiver shall be made of any Default under Section 9.1(i).

                 (c)      No increase shall be made in the amount, or extension
         of the term, of either Commitment beyond that provided for under
         Article II.

                 (d)      Except as otherwise provided in the Intercreditor
         Agreement, no alteration shall be made of the Banks' rights of set-off
         contained herein or in the other Loan Documents.

                 (e)      Except as otherwise provided in the Intercreditor
         Agreement, no release of any Collateral shall be made (except that the
         Collateral Agent may release particular items of Collateral in
         dispositions permitted by the Security Documents in accordance with
         the terms and provisions of the Intercreditor Agreement and may
         release all Collateral upon payment in full of the Loans evidenced by
         the Notes and termination of the Commitments together with payment of
         all of the Private Placement Notes and Parity Debt without the written
         consent of the Banks).

                 (f)      No amendment to or modification of this Section 
         10.6(ii) shall be made.

         10.7    Administrative Agent's Resignation.  The Administrative Agent
may resign at any time by giving at least 30 days' prior written notice of its
intention to do so to each other of the Banks and the Borrower and upon the
appointment by the Required Banks of a successor Administrative Agent
satisfactory to the Borrower. If no successor Administrative Agent shall have
been so appointed and shall have accepted such appointment within 45 days after
the retiring Administrative Agent's giving of such notice of resignation, then
the retiring Administrative Agent may with the consent of the Borrower, which
shall not be unreasonably withheld, appoint a successor Administrative Agent
which shall be a bank or a trust Borrower organized under the laws of the
United States of America or any state thereof and having a combined capital,
surplus and undivided profit of at least $50,000,000; provided, however, that
any successor Administrative Agent appointed under this sentence may be removed
upon the written request of the Required Banks, which request shall also
appoint a successor Administrative Agent satisfactory to the Borrower.  Upon
the appointment of a new Administrative Agent hereunder, the term
"Administrative Agent" shall for all purposes of this Agreement thereafter mean
such successor.  After any retiring Administrative Agent's resignation
hereunder as Administrative Agent, or the removal hereunder of any successor
Administrative Agent, the provisions of this Agreement shall continue to inure
to the benefit of such Administrative Agent as to any actions taken or omitted
to be taken by it while it was Administrative Agent under this Agreement.

         10.8    Concerning the Agents.





                                      -84-
<PAGE>   91
                 10.8.1  Action in Good Faith.  The Agents and their respective
         officers, directors, employees and agents shall be under no liability
         to any of the Banks or to any future holder of any interest in the
         Indebtedness for any action or failure to act taken or suffered in
         good faith, and any action or failure to act in accordance with an
         opinion of its counsel shall conclusively be deemed to be in good
         faith.  The Agents shall in all cases be entitled to rely, and shall
         be fully protected in relying, on instructions given to the Agents by
         the Required Holders of the Notes evidencing the Indebtedness as
         provided in this Agreement.

                 10.8.2  No Implied Duties.  The Agents shall have and may
         exercise such powers as are specifically delegated to the Agents under
         this Agreement or any other Loan Document together with all other
         powers incidental thereto.  The Agents shall have no implied duties to
         any Person or any obligation to take any action under this Agreement
         or any other Loan Document except for action specifically provided for
         in this Agreement or any other Loan Document to be taken by the
         Agents.  Before taking any action under this Agreement or any other
         Loan Document, the Agents may request an appropriate specific
         indemnity satisfactory to it from each Bank in addition to the general
         indemnity provided for in Section 10.11.  Until the Agents have
         received such specific indemnity, the Agents shall not be obligated to
         take (although such Agent may in its sole discretion take) any such
         action under this Agreement or any other Loan Document.  Each Bank
         confirms that the Agents do not have a fiduciary relationship to them
         under the Loan Documents.  The Borrower and its Subsidiaries party
         hereto confirm that neither the Agents nor any other Bank has a
         fiduciary relationship to them under the Loan Documents.

                 10.8.3  Validity.  The Agents shall not be responsible to any
         Bank or any future holder of any interest in the Loans and
         Indebtedness (a) for the legality, validity, enforceability or
         effectiveness of this Agreement or any other Loan Document, (b) for
         any recitals, reports, representations, warranties or statements
         contained in or made in connection with this Agreement or any other
         Loan Document, (c) for the existence or value of any assets included
         in any security for the Loans and Indebtedness, (d) for the
         effectiveness of any Lien purported to be included in the Collateral,
         (e) for the specification or failure to specify any particular assets
         to be included in the Collateral, or (f) unless the Agents shall have
         failed to comply with Section 10.8.1, for the perfection of the
         security interests in the Collateral.

                 10.8.4  Compliance.  The Agents shall not be obligated to
         ascertain or inquire as to the performance or observance of any of the
         terms of this Agreement or any other Loan Document; and in connection
         with any extension of credit under this Agreement or any other Loan
         Document, the Agents shall be fully protected in relying on a
         certificates of the Borrower as to the fulfillment by the Borrower of
         any conditions to such extension of credit.

                 10.8.5  Employment Agents and Counsel.  The Agents may execute
         any of their respective duties as Agents under this Agreement or any
         other Loan Document by or through employees, agents and
         attorneys-in-fact and shall not be responsible to any of the Banks,
         the Borrower for the default or misconduct of any such Agents or
         attorneys-in-fact selected by the Agent acting in good faith. The
         Agents shall be entitled to advice of counsel concerning





                                      -85-
<PAGE>   92
         all matters pertaining to the agency hereby created and its duties
         hereunder or under any other Loan Document.

                 10.8.6  Reliance on Documents and Counsel.  The Agents shall
         be entitled to rely, and shall be fully protected in relying, upon any
         affidavit, certificate, cablegram, consent, instrument, letter,
         notice, order, document, statement, telecopy, telegram, telex or
         teletype message or writing reasonably believed in good faith by the
         Agents to be genuine and correct and to have been signed, sent or made
         by the Person in question, including any telephonic or oral statement
         made by such Person, and, with respect to legal matters, upon an
         opinion or the advice of counsel selected by such Agent.

                 10.8.7  Agents' Reimbursement.  Each of the Banks severally
         agrees to reimburse the Agents, in the amount of such Bank's
         Percentage Interest, for any reasonable expenses not reimbursed by the
         Borrower (without limiting the obligation of the Borrower to make such
         reimbursement): (a) for which the Agents are entitled to reimbursement
         by the Borrower under this Agreement or any other Loan Document, and
         (b) after the occurrence of a Default, for any other reasonable
         expenses incurred by the Agents on the Banks' behalf in connection
         with the enforcement of the Banks' rights under this Agreement or any
         other Loan Document.

                 10.8.8  Agent's Fees. The Borrower shall pay to each of the
         Agents for its own respective account a fee in the respective amounts
         separately agreed to from time to time by the Borrower and the
         applicable Agent pursuant to Administrative Agent Fee Letter (insofar
         as the Administrative Agent is concerned) and the Facilitating Agent
         Fee Letter (insofar as the Facilitating Agent is concerned),
         respectively.

         10.9    Rights as a Bank.  With respect to any Loan(s) or advance(s)
extended by it hereunder, each of the Agents shall have the same rights,
obligations and powers hereunder as any other Bank and may exercise such rights
and powers as though it were not an Agent, and unless the context otherwise
specifies, the Agents shall be treated in their respective individual
capacities as though they were not the Agents hereunder.  Without limiting the
generality of the foregoing, the Percentage Interest of each Agent shall be
included in any computations of Percentage Interests.  Each Agent and its
Affiliates may accept deposits from, lend money to, act as trustee for and
generally engage in any kind of banking or trust business with the Borrower,
any of its Subsidiaries or any Affiliate of any of them and any Person who may
do business with or own an equity interest in the Borrower, any of its
Subsidiaries or any Affiliate of any of them, all as if the Administrative
Agent and the Facilitating Agent were not the Agents and without any duty to
account therefor to the other Banks.

         10.10  Independent Credit Decision.  Each of the Banks acknowledges
that it has independently and without reliance upon either of the Agents, based
on the financial statements and other documents referred to in Section 8.4, on
the other representations and warranties contained herein and on such other
information with respect to the Borrower and its Subsidiaries as such Bank
deemed appropriate, made such Bank's own credit analysis and decision to enter
into this Agreement





                                      -86-
<PAGE>   93
and to make the extensions of credit provided for hereunder.  Each Bank
represents to the Agents that such Bank will continue to make its own
independent credit and other decisions in taking or not taking action under
this Agreement or any other Loan Document.  Each Bank expressly acknowledges
that neither the Agents nor any of their respective officers, directors,
employees, Agents, attorneys-in-fact or Affiliates has made any representations
or warranties to such Bank, and no act by either of the Agents taken under this
Agreement or any other Loan Document, including any review of the affairs of
the Borrower and its Subsidiaries, shall be deemed to constitute any
representation or warranty by either of the Agents.  Except for notices,
reports and other documents expressly required to be furnished to each Bank by
the Administrative Agent under this Agreement or any other Loan Document, the
Agents shall not have any duty or responsibility to provide any Bank with any
credit or other information concerning the business, operations, property,
condition, financial or otherwise, or creditworthiness of the Borrower or any
Subsidiary which may come into the possession of either of the Agents or any of
their respective officers, directors, employees, agents, attorneys-in-fact or
Affiliates.

         10.11  Indemnification.  The holders of the Indebtedness shall
indemnify the Agents and their respective officers, directors, employees and
Agents (to the extent not reimbursed by the Borrower and without limiting the
obligation of the Borrower to do so), pro rata in accordance with their
respective Percentage Interests, from and against any and all liabilities,
obligations, losses, damages, penalties, actions, judgments, suits, costs,
expenses or disbursements of any kind whatsoever which may at any time be
imposed on, incurred by or asserted against either of the Agents or such
Persons relating to or arising out of this Agreement, any other Loan Document,
the transactions contemplated hereby or thereby, or any action taken or omitted
by either of the Agents in connection with any of the foregoing; provided,
however, that the foregoing shall not extend to actions or omissions which are
taken by either or both of the Agents with gross negligence or willful
misconduct.


                                   ARTICLE XI

                           ASSIGNMENTS/PARTICIPATIONS

         11.     Successors and Assigns; Bank Assignment and Participations.
Any reference in this Agreement to any party hereto shall be deemed to include
the successors and assigns of such party, and all covenants and agreements by
or on behalf of the Borrower, the Agents or the Banks that are contained in
this Agreement or any other Loan Documents shall bind and inure to the benefit
of their respective successors and assigns; provided, however, that (a) the
Borrower may not assign its rights or obligations under this Agreement except
for mergers or liquidations permitted by Section 7B.7, and (b) the Banks shall
be not entitled to assign their respective Percentage Interests in the Loans
evidenced by the Notes hereunder except as set forth below in this Section 11.

         11.1    Assignments by Banks.

                 11.1.1  Assignees and Assignment Procedures.  Each Bank may
         (i) without the consent of the Agents or the Borrower if the proposed
         assignee is already a Bank hereunder





                                      -87-
<PAGE>   94
         or a Wholly Owned Subsidiary of the same corporate parent of which the
         assigning Bank is a Subsidiary, or (ii) otherwise with the consents of
         the Agents and (so long as no Event of Default exists) the Borrower
         (which consents will not be unreasonably withheld), in compliance with
         applicable laws in connection with such assignment, assign to one or
         more commercial banks or other financial institutions (each, an
         "Assignee") all or a portion of its interests, rights and obligations
         under this Agreement and the other Loan Documents, including all or a
         portion, which need not be pro rata among the Loans and the Letter of
         Credit Exposure, of its Commitments, the portion of the Loans and
         Letter of Credit Exposure at the time owing to it and the Notes held
         by it, but excluding its rights and obligations as one of the Agents;
         provided, however, that:

                 (i) the aggregate amount of the Commitments of the assigning
         Bank subject to each such assignment to any Assignee other than
         another Bank (determined as of the date the Assignment and Acceptance
         with respect to such assignment is delivered to the Administrative
         Agent) shall be not less than $1,000,000 and in increments of
         $500,000; and

                 (ii) the parties to each such assignment shall execute and
         deliver to the Administrative Agent an Assignment and Acceptance (the
         "Assignment and Acceptance") in the form satisfactory to the
         Administrative Agent and the Collateral Agent, together with the Note
         or Notes subject to such assignment and a processing and recordation
         fee of $500 payable to the Administrative Agent by the assigning Bank
         or the Assignee.

                 Upon acceptance and recording pursuant to Section 11.1.4, from
         and after the effective date specified in each Assignment and
         Acceptance (which effective date shall be at least five (5) Banking
         Days after the execution thereof unless waived in writing by the
         Administrative Agent):

                 (A)      the Assignee shall be a party hereto and, to the
                          extent provided in such Assignment and Acceptance,
                          have the rights and obligations of a Bank under this
                          Agreement; and

                 (B)      the assigning Bank shall, to the extent provided in
                          such assignment, be released from its obligations
                          under this Agreement (and, in the case of an
                          Assignment and Acceptance covering all or the
                          remaining portion of an assigning Bank's rights and
                          obligations under this Agreement, such Bank shall
                          cease to be a party hereto but shall continue to be
                          entitled to the benefits of the Applicable Rate
                          provisions hereof, as well as to any fees accrued for
                          its account hereunder and not yet paid).

                 11.1.2  Terms of Assignment and Acceptance. By executing and
         delivering an Assignment and Acceptance, the assigning Bank and
         Assignee shall be deemed to confirm to and agree with each other and
         the other parties hereto as follows:





                                      -88-
<PAGE>   95
                 (a)      other than the representation and warranty that it is
         the legal and beneficial owner of the interest being assigned thereby
         free and clear of any adverse claim, such assigning Bank makes no
         representation or warranty and assumes no responsibility with respect
         to any statements, warranties or representations made in or in
         connection with this Agreement or the execution, legality, validity,
         enforceability, genuineness, sufficiency or value of this Agreement,
         any other Loan Document or any other instrument or document furnished
         pursuant hereto;

                 (b)      such assigning Bank makes no representation or
         warranty and assumes no responsibility with respect to the financial
         condition of the Borrower and its Subsidiaries or the performance or
         observance by the Borrower or any of its Subsidiaries of any of its
         obligations under this Agreement, any other Loan Document or any other
         instrument or document furnished pursuant hereto;

                 (c)      such Assignee confirms that it has received a copy of
         this Agreement, together with copies of the most recent quarterly or
         annual financial statements delivered pursuant to Section 7A.1 and
         such other documents and information as it has deemed appropriate to
         make its own credit analysis and decision to enter into such
         Assignment and Acceptance;

                 (d)      such Assignee will independently and without reliance
         upon the Administrative Agent, such assigning Bank or any other Bank,
         and based on such documents and information as it shall deem
         appropriate at the time, continue to make its own credit decisions in
         taking or not taking action under this Agreement;

                 (e)      such Assignee appoints and authorizes the
         Administrative Agent to take such action as Administrative Agent on
         its behalf and to exercise such powers under this Agreement as are
         delegated to the Administrative Agent by the terms hereof, together
         with such powers as are reasonably incidental thereto; and

                 (f)      such Assignee agrees that it will perform in
         accordance with the terms of this Agreement all the obligations which
         are required to be performed by it as a Bank.

                 11.1.3  Register.  The Administrative Agent shall maintain at
         its main Boston banking office a register (the "Register") for the
         recordation of (a) the names and addresses of the Banks and the
         Assignees which assume rights and obligations pursuant to an
         assignment under Section 11.1.1, (b) the Percentage Interest of each
         such Bank as set forth in Section 11.1 and (c) the amount of the Loans
         and Letter of Credit Exposure owing to each Bank from time to time.
         The entries in the Register shall be conclusive, in the absence of
         manifest error, and the Borrower, the Administrative Agent and the
         Banks may treat each Person whose name is registered therein for all
         purposes as a party to this Agreement.  The Register shall be
         available for inspection by the Borrower or any Bank at any reasonable
         time and from time to time upon reasonable prior notice.





                                      -89-
<PAGE>   96
                 11.1.4  Acceptance of Assignment and Assumption.  Upon its
         receipt of a completed Assignment and Acceptance executed by an
         assigning Bank and an Assignee, in exchange for the Notes subject to
         such assignment, together with the Note or Notes subject to such
         assignment, and the processing and recordation fee referred to in
         Section 11.1.1, the Administrative Agent shall (a) accept such
         Assignment and Acceptance, (b) record the information contained
         therein in the Register and (c) give prompt notice thereof to the
         Borrower.  Within five (5) Business Days after receipt of notice, the
         Borrower, at its own expense, shall execute and deliver to the
         Administrative Agent, in exchange for the surrendered Note or Notes, a
         new Note or Notes to the order of such Assignee in a principal amount
         equal to the applicable Commitments and Loans assumed by it pursuant
         to such Assignment and Acceptance and, if the assigning Bank has
         retained Commitments and Loans, a new Note or Notes to the order of
         such assigning Bank in a principal amount equal to the applicable
         Commitments and its Percentage Interest in the Loans retained by it.
         Such new Note or Notes shall be in an aggregate principal amount equal
         to the aggregate principal amount of such surrendered Note or Notes,
         and shall be dated the date of the surrendered Note or Notes which it
         or they replace.  All such Notes so replaced shall be delivered by the
         Agent to the Borrower or, alternatively, at the Administrative Agent's
         election, marked appropriately to evidence the replacement thereof by
         such replacement Note(s).

                 11.1.5  Federal Reserve Bank.  Notwithstanding the foregoing
         provisions of this Section 11, any Bank may at any time pledge or
         assign all or any portion of such Bank's rights under this Agreement
         and the other Loan Documents to a Federal Reserve Bank; provided,
         however, that no such pledge or assignment shall release such Bank
         from such Bank's obligations hereunder or under any other Loan
         Document.

                 11.1.6  Further Assurances. The Borrower and its Subsidiaries
         shall sign such documents and take such other actions from time to
         time reasonably requested by an Assignee to enable it to share in the
         benefits of the rights created by the Loan Documents.

         11.2    Credit Participants.  Each Bank may, without the consent of
the Borrower and with the consent of the Administrative Agent, in compliance
with applicable laws in connection with such participation, sell to one or more
commercial banks or other financial institutions (each a "Credit Participant")
participations in all or a portion of its interests, rights and obligations
under this Agreement and the other Loan Documents (including all or a portion
of its Commitments, the Loans and Letter of Credit exposure owing to it and the
Notes held by it); provided, however, that:

         (i)     such Bank's obligations under this Agreement shall remain
unchanged;

         (ii)    such Bank shall remain solely responsible to the other parties
hereto for the performance of such obligations;

         (iii)   the Credit Participant shall be entitled to the benefit of any
cost protection provisions contained in the Credit Agreement, but shall not be
entitled to receive any greater payment





                                      -90-
<PAGE>   97
thereunder than the selling Bank would have been entitled to receive with
respect to the interest so sold if such interest had not been sold; and

         (iv)    the Borrower, the Administrative Agent and the other Banks
shall continue to deal solely and directly with such Bank in connection with
such Bank's rights and obligations under this Agreement, and such Bank shall
retain the sole right as one of the Banks to vote with respect to the
enforcement of the obligations of the Borrower relating to the Loans and Letter
of Credit Exposure and the approval of any amendment, modification or waiver of
any provision of this Agreement (other than amendments, modifications, consents
or waivers described in Section 10.6(ii)).

Borrower agrees, to the fullest extent permitted by applicable law, that any
Credit Participant and any Bank purchasing a participation from another Bank
pursuant to Section 11.1 may exercise all rights of payment (including the
right of set-off), with respect to its participation as fully as if such Credit
Participant or such Bank were the direct creditor of the Borrower and a Bank
hereunder in the amount of such participation.  Upon receipt of notice of the
address of each Credit Participant, the Borrower shall thereafter supply such
Credit Participants with the same information and reports communicated to the
Banks.  The Borrower hereby acknowledges and agrees that Credit Participants
shall be deemed a holder of the applicable Notes to the extent of their
respective participation, and the Borrower hereby waives its right, if any, to
offset amounts owing to the Borrower from the Banks against each Credit
Participant's portion of the applicable Notes.

         11.3    Replacement of Bank.  In the event that any Bank or, to the
extent applicable, any Credit Participant (the "Affected Bank"):

                 (a)      fails to perform its obligations to fund any portion
         of the Loans or to issue any Letter of Credit when required to do so
         by the term so the Loan Documents, or fails to provide its portion of
         any Eurodollar Pricing Option pursuant to Section 3.2.1 or on account
         of a Bank Legal Requirement as contemplated by Section 3.2.5;

                 (b)      demands payment under the Reserve provisions of
         Section 3.5, the Tax provisions of Section 3.6, the Capital Adequacy
         provisions of Section 3.7 or the Regulatory Change provisions in
         Section 3.8 in an amount the Borrower deems materially in excess of
         the amounts with respect thereto demanded by the other Banks;

                 (c)      Reserved; or

                 (d)      refuses to consent to a proposed amendment,
         modification, waiver or other action requiring consent of the holders
         of 100% of the Percentage Interests under Section 10.6(b) that is
         consented to by the other Banks;

then, so long as no Event of Default exists, the Borrower shall have the right
to seek a replacement Bank which is reasonably satisfactory to the
Administrative Agent (the "Replacement Bank").  The Replacement Bank shall
purchase the interests of the Affected Bank in the Loans, Letters of Credit and
its Commitments and shall assume the obligations of the Affected Bank hereunder
and under





                                      -91-
<PAGE>   98
the other Loan Documents upon execution by the Replacement Bank of an
Assignment and Acceptance and the tender by it to the Affected Bank of a
purchase price agreed between it and the Affected Bank (or, if they are unable
to agree, a purchase price in the amount of the Affected Bank's Percentage
Interest in the Loans and Letter of Credit Exposure, or appropriate credit
support for contingent amounts included therein, and all other outstanding
Credit Obligations then owed to the Affected Bank).  Such assignment by the
Affected Bank shall be deemed an early termination of any Eurodollar Pricing
Option to the extent of the Affected Bank's portion thereof, and the Borrower
will pay to the Affected Bank any resulting amounts due under Section 3.2.4.
Upon consummation of such assignment, the Replacement Bank shall become party
to this Agreement as a signatory hereto and shall have all the rights and
obligations of the Affected Bank under this Agreement and the other Loan
Documents with a Percentage Interest equal to the Percentage Interest  of the
Affected Bank, the Affected Bank shall be released from its obligations
hereunder and under the Loan Documents, and no further consent or action by any
party shall be required.  Upon the consummation of such assignment, the
Borrower, the Administrative Agent and the Affected Bank shall make appropriate
arrangements so that a new Notes are issued to the Replacement Bank.  The
Borrower shall sign such documents and take such other actions reasonably
requested by the Replacement Bank to enable it to share in the benefits of the
rights created by the Loan Documents.  Until the consummation of an assignment
in accordance with the foregoing provisions of this Section 11.3, the Borrower
shall continue to pay the Affected Bank any Loan Obligations as they become due
and payable.

         11.4    Sale of a Certain Participation.  The Borrower, the Agents and
the Banks recognize and acknowledge that the BOk is selling a participating
interest in its Notes to The Stillwater National Bank and Trust Company.


                                  ARTICLE XII

                                 MISCELLANEOUS

         12.1    Notices.  Unless otherwise provided herein, all notices,
requests, consents and demands shall be in writing and shall be either
hand-delivered (by courier or otherwise) or mailed by certified mail, postage
prepaid, or sent by facsimile transmission (confirmed as aforesaid) to the
respective addresses specified below, or, as to any party, to such other
address as may be designated by it in notice to the other parties in accordance
with this Section 12.1:

                 If to the Borrower, to:

                          Heritage Operating, L.P.
                          8801 South Yale Avenue, Suite 310
                          Tulsa, Oklahoma  74137
                          Attn: Chief Financial Officer
                          FAX: (918) 493-7290





                                      -92-
<PAGE>   99
                 If to the Banks, to:

                          The First National Bank of Boston
                          Mail Stop:  01-08-02
                          100 Federal Street, P.O. Box 2016
                          Boston, Massachusetts  02106
                          Attn: Energy and Utilities Division
                          FAX:  (617) 434-3652
                          Telex:  940581

                          Bank of Oklahoma, National Association
                          P. O. Box 2300
                          Bank of Oklahoma Tower
                          One Williams Center
                          Tulsa, Oklahoma  74192
                          Attn: Corporate Department - 8th Floor
                          FAX:  (918) 588-6880

The Administrative Agent is hereby designated and appointed and shall serve as
notice agent for all of the Banks insofar as notices hereunder are concerned
and notice to the Administrative Agent shall be deemed notice to each of the
Banks with the same force and effect as if each such Bank were individually
notified in accordance herewith.  All notices, requests, consents and demands
hereunder will be effective when hand-delivered to the applicable notice
address set forth above or when mailed by certified mail, postage prepaid,
addressed as aforesaid.

         12.2    Place of Payment.  All sums payable hereunder shall be paid in
immediately available funds to the Administrative Agent, at the Boston Office,
or at such other place as the Administrative Agent shall notify the Borrower in
writing.  If any interest, principal or other payment falls due on a date other
than a Business Day, then (unless otherwise provided herein) such due date
shall be extended to the next succeeding Business Day, and such extension of
time will in such case be included in computing interest, if any, in connection
with such payment.





                                      -93-
<PAGE>   100
         12.3    Survival of Agreements.  All covenants, agreements,
representations and warranties made herein shall survive the execution and the
delivery of Loan Documents.  All statements contained in any certificate or
other instrument delivered by the Borrower hereunder shall be deemed to
constitute representations and warranties by the Borrower.

         12.4    Parties in Interest.  All covenants, agreements and
obligations contained in this Agreement shall bind and inure to the benefit of
the respective successors and assigns of the parties hereto, except that the
Borrower may not assign their rights or obligations hereunder without the prior
written consent of the Banks.

         12.5    Governing Law and Jurisdiction.  This Agreement and the Notes
shall be deemed to have been made or incurred and delivered under the laws of
the State of Oklahoma and shall be construed and enforced in accordance with
and governed by the Laws of Oklahoma.

         12.6    SUBMISSION TO JURISDICTION.  THE BORROWER HEREBY CONSENTS TO
THE JURISDICTION OF ANY OF THE LOCAL, STATE, AND FEDERAL COURTS LOCATED WITHIN
TULSA COUNTY, OKLAHOMA OR BOSTON, MASSACHUSETTS AND WAIVE ANY OBJECTION WHICH
BORROWER MAY HAVE BASED ON IMPROPER VENUE OR FORUM NON CONVENIENS TO THE
CONDUCT OF ANY PROCEEDING IN ANY SUCH COURT AND WAIVES PERSONAL SERVICE OF ANY
AND ALL PROCESS UPON ANY OF THEM, AND CONSENT THAT ALL SUCH SERVICE OF PROCESS
BE MADE BY MAIL OR MESSENGER DIRECTED TO ANY OF THEM AT THE ADDRESS SET FORTH
IN SUBSECTION 12.1 HEREOF AND THAT SERVICE SO MADE SHALL BE DEEMED TO BE
COMPLETED UPON THE EARLIER OF ACTUAL RECEIPT OR THREE (3) BUSINESS DAYS AFTER
MAILED OR DELIVERED BY MESSENGER.

         12.7    Maximum Interest Rate.  Regardless of any provision herein,
the Banks shall never be entitled to receive, collect or apply, as interest on
the Indebtedness any amount in excess of the maximum rate of interest permitted
to be charged by the Banks by applicable Law, and, in the event the Banks shall
ever receive, collect or apply, as interest, any such excess, such amount which
would be excessive interest shall be applied to other Indebtedness and then to
the reduction of principal; and, if all other Indebtedness and principal are
paid in full, then any remaining excess shall forthwith be paid to the
Borrower.

         12.8    No Waiver; Cumulative Remedies.  No failure to exercise, and
no delay in exercising, on the part of the Banks, any right, power or privilege
hereunder or under any other Loan Document or applicable Law shall preclude any
other or further exercise thereof or the exercise of any other right, power or
privilege of the Banks.  The rights and remedies herein provided are cumulative
and not exclusive of any other rights or remedies provided by any other
instrument or by law.  No amendment, modification or waiver of any provision of
this Agreement or any other Loan Document shall be effective unless the same
shall be in writing and signed by the Banks.  No notice to or demand on the
Borrower in any case shall entitle the Borrower to any other or further notice
or demand in similar or other circumstances.





                                      -94-
<PAGE>   101
         12.9    Costs.  The Borrower agrees to pay to the Banks on demand all
reasonable costs, fees and expenses (including without limitation reasonable
attorneys fees and legal expenses) incurred or accrued by the Banks in
connection with the negotiation, preparation, execution, delivery, filing,
recording, facilitation and administration of this Agreement, the Notes, the
Security Documents, the Intercreditor Agreement and the other Loan Documents,
or any amendment, waiver, consent or modification thereto or thereof, or any
enforcement thereof.  The Borrower further agrees that the fees and expenses of
the Banks, including the Agents, incurred in connection with the negotiation
and preparation of this Agreement and the other Loan Documents shall be paid
regardless of whether or not the transactions provided for in this Agreement
are eventually closed and regardless of whether or not any or all sums
evidenced by the Notes are advanced to the Borrower by the Banks.

         12.10   WAIVER OF JURY.  BORROWER FULLY, VOLUNTARILY AND EXPRESSLY
WAIVES ANY RIGHT TO A TRIAL BY JURY IN ANY ACTION OR PROCEEDING TO ENFORCE OR
DEFEND ANY RIGHTS UNDER THIS AGREEMENT OR UNDER ANY AMENDMENT, INSTRUMENT,
DOCUMENT OR AGREEMENT DELIVERED (OR WHICH MAY IN THE FUTURE BE DELIVERED) IN
CONNECTION HEREWITH OR ARISING FROM ANY BANKING RELATIONSHIP EXISTING IN
CONNECTION WITH THIS AGREEMENT, THE NOTES OR THE SECURITY DOCUMENTS.  BORROWER
AGREES THAT ANY SUCH ACTION OR PROCEEDING SHALL BE TRIED BEFORE A COURT AND NOT
BEFORE A JURY.

         Borrower acknowledges that it have been informed by the Agents that
the provisions of this Section 12.10 constitute a material inducement upon
which each of the Banks has relied and will rely in entering into this
Agreement and the other Loan Documents, and that Borrower has reviewed the
provisions of this Section 12.10 with its legal counsel.  Any of the Banks, the
Agents or the Borrower may file an original counterpart or copy of this Section
12.10 with any court or Tribunal as written evidence of the express consent of
the Borrower, the Agents and the Banks to the waiver of their rights to trial
by jury.

         12.11   Full Agreement.  This Agreement and the other Loan Documents
contain the full agreement of the parties and supersede all negotiations and
agreements prior to the date hereof.

         12.12   Headings.  The article and section headings of this Agreement
are for convenience of reference only and shall not constitute a part of the
text hereof nor alter or otherwise affect the meaning hereof.

         12.13   Severability.  The unenforceability or invalidity as
determined by a court of competent jurisdiction, of any provision or provisions
of this Agreement shall not render unenforceable or invalid any other provision
or provisions hereof.

         12.14   Exceptions to Covenants.  The Borrower shall not be deemed to
be permitted to take any action or fail to take any action which is permitted
as an exception to any of the covenants contained herein or which is within the
permissible limits of any of the covenants contained herein if such action or
omission would result in the breach of any other covenant contained herein.





                                      -95-
<PAGE>   102
         12.15   Conflict with Security Documents.  To the extent the terms and
provisions of any of the Security Documents are in conflict with the terms and
provisions hereof, this Agreement shall be deemed controlling.

         12.16   Confidentiality.  Each Bank will make no disclosure of
confidential information furnished to it by the Borrower or any of its
Subsidiaries unless such information shall have become public, except:

         (i)     in connection with operations under or the enforcement of this
Agreement or any other Loan Document;

         (ii)    pursuant to any statutory or regulatory requirement or any
mandatory court order, subpoena or other legal process;

         (iii)   to any parent or corporate Affiliate of such Bank or to any
Credit Participant, proposed Credit Participant or proposed Assignee; provided,
however, that any such Person shall agree to comply with the restrictions set
forth in this Section 12.16 with respect to such information;

         (iv)    to its independent counsel, auditors and other professional
advisors with an instruction to such Person to keep such information
confidential; and

         (v)     with the prior written consent of the Borrower, to any other
Person.

         12.17   Counterparts.  This Agreement may be executed in any number of
counterparts, all of which taken together shall constitute one and the same
instrument.





                                      -96-
<PAGE>   103
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed and delivered in Tulsa, Oklahoma, effective as of the day and
year first above written.

                                        "Borrower"

                                        HERITAGE OPERATING, L.P., a Delaware
                                        limited partnership

                                        By:      Heritage Holdings, Inc.,
                                                 a Delaware corporation,
                                                 general partner


                                                 By  /s/ H. MICHAEL KRIMBILL
                                                    ----------------------------
                                                    H. Michael Krimbill
                                                    Chief Financial Officer





                                      -97-
<PAGE>   104
        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and delivered in Tulsa, Oklahoma, effective as of the day and
year first above written.

                                        "Banks"

                                        THE FIRST NATIONAL BANK OF BOSTON


                                        By /s/ H. LOUIS BAILEY
                                           -------------------------------------
                                           H. Louis Bailey, Managing Director





                                      -98-
<PAGE>   105
        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and delivered in Tulsa, Oklahoma, effective as of the day and
year first above written.

                                        BANK OF OKLAHOMA, NATIONAL
                                        ASSOCIATION


                                        By /s/ DENISE L. MALTBY
                                           -------------------------------------
                                           Denise L. Maltby, Vice President





                                      -99-
<PAGE>   106
        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and delivered in Tulsa, Oklahoma, effective as of the day and
year first above written.

                                        "Administrative Agent"

                                        THE FIRST NATIONAL BANK OF BOSTON


                                        By /s/ H. LOUIS BAILEY
                                           -------------------------------------
                                           H. Louis Bailey, Managing Director





                                     -100-
<PAGE>   107
        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and delivered in Tulsa, Oklahoma, effective as of the day and
year first above written.

                                        "Documentation Agent"

                                        BANK OF OKLAHOMA, NATIONAL
                                        ASSOCIATION


                                        By /s/ DENISE L. MALTBY
                                           -------------------------------------
                                           Denise L. Maltby, Vice President





                                     -101-
<PAGE>   108
                                 EXHIBIT 2.1.3

                                  ACQUISITION
                              LOAN ADVANCE REQUEST


The First National Bank of Boston
Energy & Utilities Division
100 Federal Street
Boston, Massachusetts  02110

(Administrative Agent for The First National Bank
of Boston and Bank of Oklahoma, National Association)

(Collectively the "Banks")

Gentlemen:

       Pursuant to the provisions of the Credit Agreement dated as of June 25,
1996 (the "Credit Agreement"), between HERITAGE OPERATING, L.P. (the
"Borrower"), The First National Bank of Boston, as administrative agent for the
Banks (therein described and defined) and the Banks, the Borrower hereby (i)
confirms and ratifies the Collateral Agent's continuing security interest in
the Collateral; (ii) applies to you for an Acquisition Loan on the Acquisition
Facility in the amount of $_________ (Line 2 below); (iii) certifies that no
Event of Default or Default under the Credit Agreement has occurred and is
continuing as of the date hereof; (iv) represents and warrants to you that the
representations, covenants and warranties set forth or referred to in the
Credit Agreement are true and correct in all material respects on and as of
this date unless such representation or warranty relate only to an earlier
date; and (v) certifies to you the accuracy of the following information
concerning the Acquisition Notes:

         1.      Existing Acquisition Loan Credit (not to   $_______________
                   exceed $25,000,000
         2.      Plus:  Acquisition Loan requested          $_______________
                                 OR
         3.      Less:  Additional Payment                  $_______________
         4.      New Acquisition Note Balance               $_______________
                   Line 1 plus Line 2 or less
                   Line 3, but not to exceed
                   $35,000,000                                               

         IN WITNESS WHEREOF, the undersigned has hereunto set his hand this
________ day of ______________________________, 199_____.

                                        HERITAGE OPERATING, L.P.,
                                        a Delaware limited partnership

                                        By:      Heritage Holdings, Inc., a
                                                 Delaware corporation, general 
                                                 partner

                                                 By:
                                                     ---------------------------
                                                                         (Title)





<PAGE>   109
                                 EXHIBIT 2.1.4

                                PROMISSORY NOTE
                               (Acquisition Note)
[$12,500,000.00]                                           Boston, Massachusetts
                                                                   June 28, 1996

          FOR VALUE RECEIVED, HERITAGE OPERATING, L.P., a Delaware limited
partnership (the "Borrower"), hereby promises to pay to the order of [THE FIRST
NATIONAL BANK OF BOSTON ("Bank of Boston")], at Bank of Boston's principal
banking offices in Boston, Massachusetts in lawful money of the United States
of America, the principal sum of [TWELVE MILLION FIVE HUNDRED THOUSAND] and
NO/100 DOLLARS ($[12],500,000.00) or so much thereof as shall have been
advanced hereunder and remains unpaid on June 30, 2001, with the outstanding
unpaid balance hereof on December 31, 1998 ("Conversion Date") being converted
to a thirty (30) month term payout, payable in ten (10) consecutive quarterly
installments of principal each in an amount equal to one-tenth (1/10th) of the
outstanding principal balance hereof on the Conversion Date, and due on the
last day of each calendar quarter commencing March 31, 1999, together with
interest thereon on unpaid balances of principal from time to time outstanding
and on any past due interest, payable at the Applicable Rate per annum
determined pursuant to the Credit Agreement (as defined hereinafter) in
accordance with Section 3.1 thereof, through and including the Conversion Date,
and thereafter due on the same date quarterly principal payments are payable,
commencing March 31, 1999, with a final payment of all unpaid principal and
accrued interest due and payable at final maturity on June 30, 2001.  Interest
shall accrue on the unpaid balance of principal from time to time outstanding
and on any past due interest at the Applicable Rate per annum determined
pursuant to the Credit Agreement (as defined hereinafter) which interest is due
and payable as therein provided.  All payments under this Note shall be applied
first to unpaid accrued interest and then to outstanding principal.

          After default in the payment of any amount of principal or interest
owing hereunder (whether on maturity, acceleration or otherwise) or upon the
occurrence of any other Event of Default as described in the Credit Agreement,
the entire unpaid principal and accrued and unpaid interest hereunder shall, at
the sole option of the Banks, be accelerated and immediately become due and
payable without notice by Bank of Boston, and the unpaid principal amount
hereof shall bear interest computed at the Default Rate as defined in the
Credit Agreement, but in no event at a rate which is greater than permitted by
applicable law.  Upon default in the payment of any amount of interest payable
hereunder, such interest shall, to the full extent permitted by law, bear
interest at the same rate as principal.

          This Note is made pursuant to the Credit Agreement, dated as of June
25, 1996, among the Borrower, Bank of Boston, as Administrative Agent for the
Banks (as hereinafter defined), Bank of Oklahoma, National Association, as
Documentation Agent for the Banks, and Bank of Boston and BOk (collectively the
"Banks") (said Credit Agreement as the same may at any time hereafter be
amended, supplemented or modified and in effect being herein called the "Credit
Agreement"), and is one of the Acquisition Notes described and defined therein.
The Credit Agreement, among other things, contains provisions concerning the
maximum Acquisition Facility borrowings and adjustments thereto, for certain
rights of setoff, acceleration of the maturity hereof
<PAGE>   110
Acquisitions Note
Page 2



upon the events, terms and conditions therein specified, loan origination and
commitment fees, mandatory principal prepayments and voluntary prepayments
hereof.

          This Note is secured by the Collateral described in the Security
Agreement described and defined in the Credit Agreement which have been
executed by the Borrower and Heritage Holdings, Inc. ("Heritage") and delivered
to the Collateral Agent subject to the terms and provisions of the
Intercreditor Agreement defined in the Credit Agreement.  Reference is hereby
made to the Security Agreement for a description of the Collateral interests
thereby conveyed, pledged and/or assigned, as the case may be, the nature and
extent of the security thereunder and the security interests created thereby.

          Should the indebtedness represented by this Note or any part thereof
be collected at law or in equity or in bankruptcy, receivership or other court
proceedings or this Note be placed in the hands of attorneys for collection
after default, the Borrower agrees to pay hereunder, in addition to the
principal and interest due and payable hereon, reasonable attorneys' fees,
court costs and other collection expenses incurred by the holder hereof.

          The Borrower hereby waives presentment for payment, demand, notice of
nonpayment, protest and notice of protest with respect to any payment hereunder
and agrees to any extension of time with respect to any payment due hereunder,
to any substitution or release of the security or collateral described in the
Security Agreement and to the addition or release of any party liable
hereunder.  No delay on the part of the holder hereof in exercising any rights
hereunder shall operate as a waiver of such rights.

          This Note and the indebtedness evidenced hereby shall be construed
and enforced in accordance with and governed by the laws of the State of
Oklahoma and is delivered to the order of [Bank of Boston] by the undersigned
duly authorized corporate officer of the sole general partner of the Borrower.

                                        "Borrower"

                                        HERITAGE OPERATING, L.P.,
                                        a Delaware limited partnership

                                        By:      Heritage Holdings, Inc.,
                                                 a Delaware corporation, 
                                                 general partner

                                                 By
                                                    ----------------------------
                                                    H. Michael Krimbill,
                                                    Chief Financial Officer
DUE:     June 30, 2001                                              (the
         (converting to a 30 month term payout
         as of December 31, 1998)
<PAGE>   111
                                 EXHIBIT 2.2.3

                              LOAN ADVANCE REQUEST
                         (WORKING CAPITAL CREDIT LOANS)

The First National Bank of Boston
Energy & Utilities Division
100 Federal Street
Boston, Massachusetts  02110

(Administrative Agent for The First National Bank
of Boston
and Bank of Oklahoma, National Association)

(Collectively the "Banks")

Gentlemen:

       Pursuant to the provisions of the Credit Agreement dated as of June 25,
1996 (the "Credit Agreement"), among HERITAGE OPERATING, L.P. ("Borrower"), The
First National Bank of Boston, as administrative agent for the Banks (therein
described and defined) and the Banks, the Borrower hereby (i) confirms and
ratifies the Collateral Agent's continuing security interest the Collateral;
(ii) applies to you for a Working Capital Loan on the Working Capital Facility
in the amount of $_________ (Line 2 below); (iii) certifies that no Event of
Default or Default under the Credit Agreement has occurred and is continuing as
of the date hereof; (iv) represents and warrants to you that the
representations, covenants and warranties set forth or referred to in the
Credit Agreement are true and correct in all material respects on and as of
this date; and (v) certifies to you the accuracy of the following information
concerning the Working Capital Notes:

         1.      Existing Working Capital Facility Loan Balance    $____________
                   (not to exceed $15,000,000 minus outstanding
                    principal balance of Section  7B.2(v) 
                 Indebtedness)
         2.      Plus: Working Capital Loan requested              $____________
                                 OR
         3.      Less:  Additional Payment                         $____________
         4.      New Working Capital Notes Balance
                   Line 1 plus Line 2 or less Line 3,
                   but not to exceed $15,000,000 minus sum of (x)
                   Letter of Credit Exposure plus (y) outstanding
                   principal balance of Section  7B.2(v) 
                   Indebtedness                                    $____________


         IN WITNESS WHEREOF, the undersigned has hereunto set his hand this
________ day of ______________________________, 199_____.

                                        HERITAGE OPERATING, L.P.,
                                        a Delaware limited partnership

                                        By:      Heritage Holdings, Inc., a
                                                 Delaware corporation, general 
                                                 partner


                                                 By:
                                                     ---------------------------
                                                                         (Title)
<PAGE>   112
                                 EXHIBIT 2.2.4

                              WORKING CAPITAL NOTE

[$7,500,000.00]                                            Boston, Massachusetts
                                                                   June 28, 1996

          FOR VALUE RECEIVED, HERITAGE OPERATING, L.P., a Delaware limited
partnership (the "Borrower"), hereby promises to pay to the order of [THE FIRST
NATIONAL BANK OF BOSTON ("First Boston")] at Bank of Boston's principal banking
offices in Boston, Massachusetts, in lawful money of the United States of
America, the principal sum of [SEVEN MILLION FIVE HUNDRED THOUSAND] and NO/100
DOLLARS ($[7,5]00,000.00), or so much thereof as shall have been advanced
hereunder and remains unpaid, on June 30, 1999, together with interest thereon
from the date hereof on the unpaid balance of principal from time to time
outstanding and on any past due interest, at the Applicable Rate per annum
determined pursuant to the Credit Agreement (as defined hereinafter), which
interest is due and payable as therein provided in Section 3.1, and at final
maturity on June 30, 1999.

          After default in the payment of any amount of principal or interest
owing hereunder (whether on maturity, acceleration or otherwise) or upon the
occurrence of any other Event of Default as described in the Credit Agreement,
the entire unpaid principal and accrued and unpaid interest hereunder shall, at
the sole option of First Boston, be accelerated and immediately become due and
payable without notice by First Boston, and the unpaid principal amount hereof
shall bear interest computed at a Default Rate as defined in the Credit
Agreement, but in no event at a rate which is greater than permitted by
applicable law.  Upon default in the payment of any amount of interest payable
hereunder, such interest shall, to the full extent permitted by law, bear
interest at the same rate as principal.

          This Note is made pursuant to the Credit Agreement, dated as of June
25, 1996, between and among Borrower, Bank of Boston, as Administrative Agent
for the Banks (as hereinafter defined), Bank of Oklahoma, National Association,
as Documentation Agent for the Banks, Bank of Boston and BOK (collectively the
"Banks") (said Credit Agreement, as the same may at any time hereafter be
amended, supplemented or modified and in effect being herein called the "Credit
Agreement"), and is one of the Working Capital Notes therein described.  The
Credit Agreement, among other things, contains provisions for reduction of the
maximum availability under the Working Capital Loan Facility pursuant to
Section 2.2.1 and the Letter of Credit Exposure, certain rights of setoff,
acceleration of the maturity hereof upon the events, terms and conditions
therein specified, commitment fees, mandatory principal payments and voluntary
prepayments hereof.

          This Note is secured by the Collateral described in the Security
Agreement described and defined in the Credit Agreement, including all
supplements thereof and/or amendments thereto, which have been executed by the
Borrower and Heritage Holdings, Inc. ("Heritage") and delivered to the
Collateral Agent subject to the terms and provisions of the Intercreditor
Agreement defined in the Credit Agreement.  Reference is hereby made to the
Security Agreement for a description of the Collateral interests thereby
conveyed, pledged and/or assigned, as the case may be, the nature and extent of
the security thereunder and the security interests created thereby.

          Should the indebtedness represented by this Note or any part thereof
be collected at law or in equity or in bankruptcy, receivership or other court
proceedings or this Note be placed in the hands of attorneys for collection
after default, the Borrower agrees to pay hereunder, in addition to the
principal and interest due and payable hereon, reasonable attorneys' fees,
court costs and other collection expenses incurred by the holder hereof.
<PAGE>   113
Working Capital Note
Page 2


          The Borrower hereby waives presentment for payment, demand, notice of
nonpayment, protest and notice of protest with respect to any payment hereunder
and agrees to any extension of time with respect to any payment due hereunder,
to any substitution or release of the security or Collateral described in the
Security Agreement and to the addition or release of any party liable
hereunder.  No delay on the part of the holder hereof in exercising any rights
hereunder shall operate as a waiver of such rights.

          The indebtedness evidenced hereby shall be construed and enforced in
accordance with and governed by the laws of the State of Oklahoma and is
delivered to the order of [Bank of Boston], by the undersigned duly authorized
corporate officer of the sole general partner of the Borrower.

                                        "Borrower"

                                        HERITAGE OPERATING, L.P., a Delaware
                                        limited partnership

                                        By:      Heritage Holdings, Inc.,
                                                 a Delaware corporation,
                                                 general partner


                                                 By
                                                    ----------------------------
                                                    H. Michael Krimbill,
                                                    Chief Financial Officer

DUE:     June 30, 1999

<PAGE>   1
                      FIRST AMENDMENT TO CREDIT AGREEMENT


         THIS FIRST AMENDMENT TO CREDIT AGREEMENT, dated as of July 25, 1996,
but effective for all purposes as of June 28, 1996, is entered into between and
among HERITAGE OPERATING, L.P., a Delaware limited partnership (the "Borrower")
and THE FIRST NATIONAL BANK OF BOSTON ("Bank of Boston") and BANK OF OKLAHOMA,
NATIONAL ASSOCIATION ("BOk") (Bank of Boston and BOk, together with each other
Person that becomes a Bank pursuant to Section 11 of the Credit Agreement
(hereinafter defined) collectively referred to herein as the "Banks"), Bank of
Boston as administrative and structuring agent for the Banks (in such capacity,
the "Administrative Agent") and BOk, as documentation agent for the Banks (in
such capacity, the "Documentation Agent").

         WHEREAS, the Borrower, the Banks, the Administrative Agent and the
Documentation Agent entered into that certain Credit Agreement dated as of June
25, 1996 (as amended and modified, collectively the "Credit Agreement"); and

         WHEREAS, the Borrower has requested the Banks, the Administrative
Agent and the Documentation Agent to amend and modify certain provisions of
Article VII of the Credit Agreement to correct and clarify certain technical
errors and inadvertent omissions; and

         WHEREAS, the Banks, the Administrative Agent and the Documentation
Agent are willing to make such requested amendments and modifications, subject
to clarification of the inclusion of Borrower's calculations of post
acquisition compliance with financial covenants as a part of the
Acquisition/Capex Due Diligence Packet described and defined in Section 2.1.3
of the Credit Agreement.

         1.      Clauses (vi) and (x) of Section 7B.2 of the Credit Agreement
are amended and modified t delete references therein to "clause (xiii)" and to
insert therein in lieu of each such reference the phrase "clause (xiv)".

         2.      Clause (ix) of Section 7B.2 of the Credit Agreement is deleted
in its entirety.

         3.      Clause (xiii) of Section 7B.2 of the Credit Agreement is
deleted and replaced in its entirety by the following:

                 "(xiii) the Borrower may become and remain liable with respect
         to Indebtedness incurred in respect of Capitalized Lease Obligations
         and Non-Compete Obligations; provided that the Lien in respect thereof
         is permitted by clause (viii) of Section 7B.3; and".

         4.      Sub-clause (iii) of the fourth sentence of Section 2.1.3 of
the Credit Agreement is deleted and replaced in its entirety by the following:

                 "(iii)  A full and complete copy of Borrower's internal
         acquisition or capital expenditure model (in general form, content and
         detail as utilized by the
<PAGE>   2
         General Partner or its Affiliates for similar acquisitions or capital
         expenditures prior to the Initial Closing Date), including, without
         limitation, calculations demonstrating Borrower's continued compliance
         with the financial ratios of Section 7B.1(i) and (ii) hereof as of and
         following the closing of such proposed acquisition or capital
         expenditure (utilizing, for the purpose of such demonstration, and
         subject to the calculation of Consolidated EBITDA resulting from such
         proposed Asset Acquisition, including adjustments permitted thereby,
         the financial statements of the Borrower and of the acquired business
         or asset for the most recent period of twelve consecutive months (as
         opposed to the immediately preceding four full fiscal quarters) for
         which such statements are available), and".


         5.      All of the remaining terms, provisions and conditions of the
Credit Agreement, except as otherwise expressly amended and modified by this
First Amendment, shall continue in full force and effect in all respects.  This
First Amendment may be executed in multiple counterparts, each of which shall
be deemed an original and all of which shall constitute a single First
Amendment.

         6.      The effectiveness of paragraph 3 of this First Amendment is
conditioned on the consummation of an identical amendment to Section 6B(xii) of
the Note Purchase Agreement executed by the requisite percentage (Required
Holders) of Note purchasers as required thereby.


         IN WITNESS WHEREOF, the parties hereto have caused this First
Amendment to Credit Agreement to be duly executed and delivered in Tulsa,
Oklahoma, effective as of the 28th day of June, 1996.

                                        "Borrower"
                                        
                                        HERITAGE OPERATING, L.P., a Delaware
                                        limited partnership
                                        
                                        By:     Heritage Holdings, Inc.
                                                a Delaware corporation,
                                                general partner
                                        
                                        By:                                    
                                           ------------------------------------
                                                   H. Michael Krimbill
                                                   Chief Financial Officer





                                      -2-
<PAGE>   3
                                        "Banks"
                                        
                                        THE FIRST NATIONAL BANK OF BOSTON
                                        
                                        
                                        By:                                    
                                           ------------------------------------
                                             H. Louis Bailey, Managing Director
                                        
                                        
                                        BANK OF OKLAHOMA, NATIONAL
                                        ASSOCIATION
                                        
                                        
                                        By:                                    
                                           ------------------------------------
                                             Denise L. Maltby, Vice President
                                        
                                        
                                        
                                        "Administrative Agent"
                                        
                                        THE FIRST NATIONAL BANK OF BOSTON
                                        
                                        
                                        By:                                    
                                           ------------------------------------
                                             H. Louis Bailey, Managing Director
                                        
                                        
                                        "Documentation Agent"
                                        
                                        BANK OF OKLAHOMA, NATIONAL
                                        ASSOCIATION
                                        
                                        
                                        By:                                    
                                           ------------------------------------
                                             Denise L. Maltby, Vice President





                                      -3-

<PAGE>   1

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



                            HERITAGE HOLDINGS, INC.
                            HERITAGE OPERATING, L.P.

                                  $120,000,000

                  8.55% SENIOR SECURED NOTES DUE JUNE 30, 2011

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

                            NOTE PURCHASE AGREEMENT

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



                           Dated as of June 25, 1996


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


<PAGE>   2
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                                                     Page
                                                                                                                     ----
 <S>     <C>                                                                                                           <C>
 1.      AUTHORIZATION OF ISSUE OF NOTES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                                                                                                                       
 2.      PURCHASE AND SALE OF NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                                                                                                                       
 3.      CONDITIONS OF CLOSING  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                                                                                                                       
         3A.     Opinion of Purchasers' Special Counsel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
         3B.     Other Opinions of Counsel  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
         3C.     Legal Investment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
         3D.     Representations and Warranties; No Default.  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
         3E.     Purchase Permitted By Applicable Laws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         3F.     Performance; Transfer of Assets; Proceedings.  . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         3G.     Sale of Notes to Other Purchasers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         3H.     Operative Agreements; Security Documents; Intercreditor Agreement; Other Agreements. . . . . . . . .   5
         3I.     Sale of Units  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         3J.     Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
         3K.     Payment of Closing Fees  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
         3L.     Private Placement Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
         3M.     Insurance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
                                                                                                                       
 4.      PREPAYMENTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
                                                                                                                       
         4A.     Required Prepayments; Maturity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
         4B.     Optional Prepayment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
         4C.     Contingent Prepayments on Disposition, Loss of Assets or Merger or Change of Control.  . . . . . . .   8
         4D.     Prepayment Procedure for Contingent Prepayments. . . . . . . . . . . . . . . . . . . . . . . . . . .   9
         4E.     Notice of Optional Prepayment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
         4F.     Allocation of Partial Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
         4G.     Retirement of Notes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13

 5.      AFFIRMATIVE COVENANTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13

         5A.     Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
         5B.     Information Required by Rule 144A  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         5C.     Inspection of Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         5D.     Covenant to Secure Notes Equally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
</TABLE>





<PAGE>   3
<TABLE>
<CAPTION>
                                                                                                                     Page
                                                                                                                     ----
         <S>     <C>                                                                                                   <C>
         5E.     Partnership or Corporate Existence, etc.; Compliance with Laws.  . . . . . . . . . . . . . . . . . .  19
         5F.     Payment of Taxes and Claims. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
         5G.     Compliance with ERISA  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         5H.     Maintenance and Sufficiency of Properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         5I.     Insurance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         5J.     Environmental Laws.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         5K.     Operative Agreements.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         5L.     After-Acquired Property  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
         5M.     Further Assurances.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         5N.     No Action Requiring Registration.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         5O.     Books and Accounts.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         5P.     Available Cash Reserves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
         5Q.     Parity Debt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23

 6.      NEGATIVE COVENANTS.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23

         6A.     Financial Ratios.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
         6B.     Indebtedness.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
         6C.     Liens  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         6D.     Priority Debt  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30
         6E.     Loans, Advances, Investments and Contingent Liabilities  . . . . . . . . . . . . . . . . . . . . . .  30
         6F.     Restricted Payments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
         6G.     Consolidation, Merger, Sale of Assets, etc.  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
         6H.     Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         6I.     Transactions with Affiliates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         6J.     Subsidiary Stock and Indebtedness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         6K.     Payment of Dividends by Subsidiaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         6L.     Sales of Receivables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
         6M.     Material Agreements; Tax Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39

 7.      EVENTS OF DEFAULT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39

         7A.     Acceleration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         7B.     Rescission of Acceleration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
         7C.     Notice of Acceleration or Rescission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         7D.     Other Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

 8.      REPRESENTATIONS, COVENANTS AND WARRANTIES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

         8A.     Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         8B.     Partnership Interests  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
         8C.     Qualification  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         8D.     Business; Financial Statements.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
</TABLE>



                                       ii
<PAGE>   4
<TABLE>
<CAPTION>
                                                                                                                     Page
                                                                                                                     ----
         <S>     <C>                                                                                                   <C>
         8E.     Actions Pending  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         8F.     Changes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         8G.     Outstanding Indebtedness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         8H.     Transfer of Assets and Business; Title to Properties.  . . . . . . . . . . . . . . . . . . . . . . .  48
         8I.     Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         8J.     Compliance with Other Instruments, etc.; Solvency. . . . . . . . . . . . . . . . . . . . . . . . . .  49
         8K.     Governmental Consent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         8L.     Offering of Notes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         8M.     Use of Proceeds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         8N.     ERISA  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         8O.     Environmental Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         8P.     Pre-emptive Rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         8Q.     Disclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         8R.     Federal Reserve Regulations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53
         8S.     Investment Company Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         8T.     Public Utility Holding Company Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         8U.     Matters Relating to the General Partner  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54

 9.      REPRESENTATIONS OF EACH PURCHASER  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54

         9A.     Nature of Purchase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         9B.     Source of Funds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
         9C.     Status of Purchaser  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         9D.     Representations of Each Purchaser to Each Other Purchaser  . . . . . . . . . . . . . . . . . . . . .  56

 10.     DEFINITIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56

         10A.    Yield-Maintenance Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57
         10B.    Other Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
         10C.    Accounting Principles, Terms and Determinations  . . . . . . . . . . . . . . . . . . . . . . . . . .  79

 11.     MISCELLANEOUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  79

         11A.    Note Payments    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  79
         11B.    Expenses   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  80
         11C.    Consent to Amendments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  80
         11D.    Form, Registration, Transfer and Exchange of Notes; Lost Notes  .  . . . . . . . . . . . . . . . . .  81
         11E.    Persons Deemed Owners; Participations    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  82
         11F.    Survival of Representations and Warranties; Entire Agreement   . . . . . . . . . . . . . . . . . . .  82
         11G.    Successors and Assigns   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  82
         11H.    Disclosure to Other Persons    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  83
         11I.    Notices    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  83
         11J.    Substitution of Wholly-Owned Subsidiary   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   84
         11K.    Payments Due on Non-Business Days   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   84
         11L.    Satisfaction Requirement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   84
         11M.    GOVERNING LAW   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   85
         11N.    Severability  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   85
         11O.    Descriptive Headings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   85
         11P.    Counterparts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   85
         11Q.    Severalty of Obligations .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   85
         11R.    WAIVER OF JURY TRIAL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   85
</TABLE>

                                      iii
<PAGE>   5
<TABLE>
<S>                 <C>                                                        
EXHIBIT A-1         Form of Note                                               
                                                                               
EXHIBIT A-2         Form of Note                                               
                                                                               
EXHIBIT B-1         Form of Opinion of Fried, Frank, Harris, Shriver & Jacobson
                                                                               
EXHIBIT B-2         Form of Opinion of Andrews & Kurth L.L.P.                  
                                                                               
EXHIBIT B-3         Form of Opinion of Doerner, Saunders, Daniel & Anderson    
                                                                               
EXHIBIT C           Form of Intercreditor Agreement                            
                                                                               
EXHIBIT D           Form of Security Agreement                                 

Purchaser Schedule

Schedule 6C         Existing Liens               
                                                 
Schedule 6E         Investments                  
                                                 
Schedule 8B         Subsidiaries                 
                                                 
Schedule 8C         Foreign Qualification        
                                                 
Schedule 8D         Documents and Other Materials
                                                 
Schedule 8G         Other Indebtedness           
                                                 
Schedule 8H         Title to Properties          
                                                 
Schedule 9B         Employee Benefit Plans       
</TABLE>





<PAGE>   6

                            HERITAGE HOLDINGS, INC.
                            HERITAGE OPERATING, L.P.
                       8801 SOUTH YALE AVENUE, SUITE 310
                             TULSA, OKLAHOMA  74137


                                                             As of June 25, 1996
To Each of the Purchasers Named in the
Purchaser Schedule Attached Hereto
Ladies and Gentlemen:

                 On the date hereof, Heritage Holdings, Inc. ("HERITAGE"),  a
Delaware corporation, is engaged in the business of wholesale and retail sales,
storage and distribution of propane gas, providing repair, installation and
maintenance services for propane heating systems and the sale and distribution
of propane-related supplies and equipment, including appliances (the
"BUSINESS").

                 Heritage Operating, L.P., a Delaware limited partnership (the
"OPERATING PARTNERSHIP"), has been recently formed to acquire, own and operate
the Business.  In a series of related transactions:  (a) Heritage will issue
Notes (as defined below) in an aggregate principal amount not to exceed
$120,000,000 to the purchasers named in the Purchaser Schedule attached hereto
(the "PURCHASERS"), (b) Heritage will contribute substantially all of the
assets (including the assets of any entity consolidating with or merging into
Heritage) of Heritage (other than approximately $79,300,000 in proceeds from
the sale of the Notes) (the "ASSETS") to the Operating Partnership pursuant to
the Conveyance Agreements (as defined below), (c) Heritage will receive a
1.0101% general partner interest and a 98.9899% limited partner interest
(representing all of the limited partner interest) in the Operating
Partnership, (d) Heritage Propane Partners, L.P. (the "MASTER PARTNERSHIP"), a
Delaware limited partnership, will sell 4,025,000 common units representing a
limited partnership interest in the Master Partnership and the Operating
Partnership on a combined basis of not more than 51.6% (the "OFFERING"), and is
granting to the underwriters an option to purchase an additional 603,750 common
units (collectively, the "COMMON UNITS") to cover over-allotments, (e) the
Operating Partnership will assume substantially all of the liabilities
(including the Notes) of Heritage (the "LIABILITIES") pursuant to the
Conveyance Agreements, (f) Heritage will convey all of its limited partner
interests in the Operating Partnership to the Master Partnership in exchange
for 3,702,943 subordinated units (the "SUBORDINATED UNITS") representing all of
the limited partner interest in the Master Partnership not represented by
<PAGE>   7
the Common Units and representing a limited partner interest of not less than
47.0% (43.6% if the underwriters' overallotment option is exercised in full) in
the Master Partnership and a 1.0% general partner interest in the Master
Partnership, (g) the Master Partnership will contribute the net proceeds of the
sale of the Common Units to the Operating Partnership, (h) the Operating
Partnership will apply the net proceeds from the sale of the Common Units and
the approximately $40,700,000 in cash contributed by Heritage from the issuance
of the Notes, $2,400,000 borrowed under the Acquisition Facility (as defined
below) and $4,300,000 borrowed under the Revolving Working Capital Facility (as
defined below) as contemplated by the Registration Statement (as defined
below), including the final form of Prospectus filed under Rule 424(b) of the
Securities Act, (i) Heritage will use the remaining $80,100,000 of net proceeds
from the issuance of the Notes to fund the Equity Repurchase (as defined
below), to capitalize the General Partner (as defined below) and to pay
expenses associated with the sale of the Notes, and (j) the Operating
Partnership will enter into the Credit Agreement (as defined below) which will
provide credit facilities in an aggregate amount of up to $50,000,000.

                 The foregoing transactions and others to occur in connection
with the issuance of the Notes and the Offering as specified in the
Contribution Agreement are collectively referred to herein as the
"TRANSACTIONS." Immediately after giving effect to the Transactions (a)
Heritage (in its capacity as general partner of the Operating Partnership, the
"GENERAL PARTNER") will be the sole general partner of the Operating
Partnership, owning a 1.0101% general partner interest therein, and the sole
general partner of the Master Partnership, owning a 1.0% interest therein, (b)
the Master Partnership will be the sole limited partner of the Operating
Partnership, owning a 98.9899% limited partner interest therein, and Heritage
will hold a 47.4% limited partner interest in the Master Partnership.  As used
herein, the term the "COMPANY" shall mean Heritage prior to contribution of the
Assets to, and the assumption of the Liabilities (including, without
limitation, the Notes) by, the Operating Partnership pursuant to the Conveyance
Agreements and shall mean the Operating Partnership on and after the time of
such contribution and assumption.  The Operating Partnership acknowledges and
agrees that on and after the time of such contribution and assumption it will
become and remain liable on the Notes theretofore issued by Heritage to the
same extent as if the Operating Partnership were the original maker thereof.

                 Accordingly, the Operating Partnership and Heritage  agree
with the Purchasers as follows:

         1.      AUTHORIZATION OF ISSUE OF NOTES.  The Company will authorize
the issue of its senior secured promissory notes in the aggregate principal
amount of $120,000,000, to be dated the date of issue thereof, to mature June
30, 2011, to bear interest on the unpaid balance thereof from the date thereof
until the principal thereof shall have become due and payable at the rate of
8.55% per annum and on overdue
<PAGE>   8
payments at the rate specified therein, and to be substantially in the form of
Exhibit A-1 hereto in the case of Notes issued on or prior to the time of the
Closing (as defined below) and Exhibit A-2 hereto in the case of any Notes
issued after the time of the Closing, in each case, with such changes therein,
if any, as may be approved by each of the Purchasers and the Company.  The term
"Notes" as used herein shall include each such senior secured promissory note
delivered pursuant to any provision of this Agreement and each such senior
secured promissory note delivered in substitution or exchange for any other
Note pursuant to any such provision.  The Notes will be secured by the Security
Agreement referred to in Section 3H.  The Security Agreement and the Notes, to
the extent secured thereby, are subject to the terms of the Intercreditor
Agreement referred to in Section 3H.

         2.      PURCHASE AND SALE OF NOTES.  The Company hereby agrees to sell
to each Purchaser and, subject to the terms and conditions herein set forth,
each Purchaser agrees to purchase from Heritage the aggregate principal amount
of Notes set forth opposite such Purchaser's name in the Purchaser Schedule
attached hereto at 100% of such aggregate principal amount.  The sale of the
Notes to the Purchasers shall take place at the offices of Baker & Botts,
L.L.P., 599 Lexington Avenue, New York, New York 10022 at 10:00 a.m., New York
City time, at a closing (the "Closing") on June 28, 1996, or such later date
(which shall not be later than July 20, 1996) as may be agreed upon by the
Company and each Purchaser.  At the Closing, the Company will deliver to each
Purchaser one or more Notes registered in such Purchaser's name (or in the name
of its nominee), evidencing the aggregate principal amount of Notes to be
purchased by such Purchaser and in the denomination or denominations specified
with respect to such Purchaser in the Purchaser Schedule against payment of the
purchase price thereof by transfer of immediately available funds for credit to
the Company's account on the date of Closing (the "Closing Date") (as specified
in a notice to each Purchaser at least three Business Days prior to the Closing
Date).

         3.      CONDITIONS OF CLOSING.  Each Purchaser's obligation to
purchase and pay for the Notes to be purchased by such Purchaser hereunder is
subject to the satisfaction, on or before the Closing Date, of the following
conditions:

         3A.     OPINION OF PURCHASERS' SPECIAL COUNSEL.  Such Purchaser shall
have received from Fried, Frank, Harris, Shriver & Jacobson, who are acting as
special counsel for the Purchasers in connection with the transactions
contemplated by this Agreement, a favorable opinion satisfactory to such
Purchaser and substantially in the form of Exhibit B-1 attached hereto.

         3B.     OTHER OPINIONS OF COUNSEL.  Such Purchaser shall have received
favorable opinions from Andrews & Kurth L.L.P., special counsel for Heritage
and the Operating Partnership, and Doerner, Saunders, Daniel & Anderson,
special counsel for Heritage and





                                     - 3 -
<PAGE>   9
the Operating Partnership, satisfactory to such Purchaser and substantially in
the form of Exhibits B-2 and B-3, respectively, attached hereto.  Such
Purchaser shall have received copies of each of the opinions substantially in
the form required to be delivered pursuant to the Underwriting Agreement (as
defined below) (other than the opinion of counsel to the Underwriters),
accompanied by letters, dated the Closing Date and addressed to the Purchasers,
from each counsel rendering such opinions, stating that the Purchasers are
entitled to rely on such opinions as if they were addressed to such Purchasers.
Heritage and the Operating Partnership each hereby directs each of their
counsel referred to in this Section 3B, and each of their counsel who deliver
opinions pursuant to the Underwriting Agreement, to deliver to the Purchasers
such opinions and letters to be delivered by it pursuant to this Section 3B and
authorizes the Purchasers to rely thereon.

         3C.     LEGAL INVESTMENT.  On the Closing Date, the purchase of Notes
shall be permitted by the laws and regulations of each jurisdiction to which
each Purchaser's investments are subject, but without recourse to provisions
(such as section 1404(b) or 1405(a)(8) of the New York Insurance Law)
permitting limited investments by insurance companies in securities not
otherwise legally eligible for investment.  If requested by a Purchaser by
adequate prior written request to Heritage, such Purchaser shall have received
an Officer's Certificate of Heritage and the Operating Partnership certifying
as to such matters of fact as such Purchaser may reasonably specify to enable
such Purchaser to determine whether such purchase is still so permitted.

         3D.     REPRESENTATIONS AND WARRANTIES; NO DEFAULT.

                 (i)      The representations and warranties of Heritage and
the Operating Partnership contained in this Agreement (including, without
limitation, Section 8), the other Financing Documents, the Operative
Agreements, and those otherwise made in writing by or on behalf of Heritage or
the Operating Partnership pursuant to this Agreement,  the other Financing
Documents or the Operative Agreements shall be true and correct when made and
on and as of the Closing Date, except to the extent (a) of changes caused by
the transactions herein contemplated and (b) that such representations and
warranties expressly relate to an earlier time or date, in which case such
representations and warranties shall have been true and correct as of such
earlier time or date.

                 (ii)     There shall exist on the Closing Date, immediately
after giving effect to the transactions contemplated by the Registration
Statement (including, without limitation the transactions contemplated by this
Agreement, the other Financing Documents and the Operative Agreements), no
Default or Event of Default hereunder or under any of the Financing Documents
or default by Heritage or the Operating Partnership under any Operative
Agreement.





                                     - 4 -
<PAGE>   10
                 (iii)    Heritage and the Operating Partnership each shall
have delivered to each Purchaser an Officer's Certificate, dated the Closing
Date, with respect to clauses (i) and (ii) hereto.

         3E.     PURCHASE PERMITTED BY APPLICABLE LAWS.       The purchase of
and payment for the Notes to be purchased by such Purchaser on the Closing Date
on the terms and conditions herein provided (including the use of the proceeds
of such Notes by Heritage and the Operating Partnership) shall not violate any
applicable law or governmental regulation (including, without limitation,
Section 5 of the Securities Act or Regulation G, T or X of the Board of
Governors of the Federal Reserve System) and shall not subject such Purchaser
to any tax, penalty, liability or other onerous condition under or pursuant to
any applicable law or governmental regulation, and such Purchaser shall have
received such certificates or other evidence as it may request to establish
compliance with this condition.

         3F.     PERFORMANCE; TRANSFER OF ASSETS; PROCEEDINGS.

                 (i)      Heritage and the Operating Partnership each shall
have performed and complied in all material respects with all agreements and
covenants contained in this Agreement, any other Financing Document and any
Operative Agreement required to be performed or complied with by it prior to or
at the Closing.

                 (ii)     The transactions (including, without limitation, the
Transactions) contemplated under the Operative Agreements and the Registration
Statement to occur at or prior to the time of the Closing shall have been
completed substantially as contemplated therein.  The business of Heritage and
of the Operating Partnership shall be as described in the Registration
Statement.

                 (iii)    All  organizational and other proceedings taken or to
be taken in connection with the transactions contemplated hereby and all
documents incident thereto shall be satisfactory in substance and form to such
Purchaser, and such Purchaser shall have received all such additional
certificates and all such counterpart originals or certified or other copies of
such documents as it may reasonably request.

         3G.     SALE OF NOTES TO OTHER PURCHASERS.  The Company shall have
sold to the other Purchasers the Notes to be purchased by them at the Closing
and shall have received payment in full therefor.

         3H.     OPERATIVE AGREEMENTS; SECURITY DOCUMENTS; INTERCREDITOR
AGREEMENT; OTHER AGREEMENTS.

                 (i)      Each of the Operative Agreements shall have been duly
authorized, executed and delivered by the respective parties thereto
substantially in the form





                                     - 5 -
<PAGE>   11
previously provided to the Purchasers, shall be in full force and effect, and
shall constitute the legal, valid and binding obligations of the respective
parties thereto, and no default or accrued right of termination on the part of
any of the parties thereto shall exist thereunder as of the Closing Date, and
each Purchaser shall have received a fully executed original, or a true and
correct copy, of each Operative Agreement.

                 (ii)     The Administrative Agent and the Purchasers shall
have entered into an Intercreditor and Agency Agreement (as amended,
supplemented or otherwise modified from time to time, the "INTERCREDITOR
AGREEMENT") substantially in the form of Exhibit C hereto, with the financial
institution named as collateral agent therein (together with its successors as
such collateral agent, the "COLLATERAL AGENT"), providing for the terms on
which the Collateral Agent shall hold the Collateral under the Security
Agreement.

                 (iii)    Heritage and the Operating Partnership shall have
entered into a Security Agreement (as amended, supplemented or otherwise
modified from time to time, the "SECURITY AGREEMENT") substantially in the form
of Exhibit D hereto, with the Collateral Agent, and shall have delivered to the
Collateral Agent such certificates representing shares of Capital Stock
included in the Collateral and proper stock powers with respect thereto duly
endorsed in blank (the "CERTIFICATES AND STOCK POWERS") and such proper
financing statements (whether Form UCC-1 or any other form that may be required
by any jurisdiction) (as amended, supplemented or otherwise modified from time
to time the "FINANCING STATEMENTS") under the Uniform Commercial Code of such
jurisdictions, as may be necessary, or in the opinion of the Purchasers'
special counsel desirable, to perfect the Liens created by the Security
Agreement.  The Financing Statements shall have been filed in all of such
necessary jurisdictions to perfect the assignment and security interest
purported to be created by the Security Agreement.

                 (iv)     The Company shall have delivered to each Purchaser
true and complete copies of the Credit Agreement, as fully executed and
delivered, the Underwriting Agreement and the Registration Statement and each
of the Credit Agreement and the Underwriting Agreement shall be in full force
and effect and in form and substance satisfactory to each Purchaser and all
conditions precedent contained therein (including, without limitation, all
conditions precedent in the Credit Agreement to permit the initial borrowings
under the Acquisition Facility and the Revolving Working Capital Facility)
shall have been duly satisfied or unconditionally waived or shall occur
simultaneously with the Closing.

         3I.     SALE OF UNITS.  At the time of the Closing, the Registration
Statement shall have been declared effective by the Commission, and all
transactions contemplated by the Registration Statement and the Underwriting
Agreement shall have been consummated or shall be consummated simultaneously
with the Closing, as contemplated therein.





                                     - 6 -
<PAGE>   12
         3J.     RATING.  Prior to the Closing, the Notes shall have received,
and there shall remain in effect, a rating of BBB or better from Fitch
Investors Service, Inc.  Such rating shall not have been withdrawn prior to the
Closing Date.

         3K.     PAYMENT OF CLOSING FEES.  The Company shall have paid the fees
and disbursements of the Purchasers' special counsel required by Section 11B to
be paid by the Company on the Closing Date.

         3L.     PRIVATE PLACEMENT NUMBER.   The Company shall have obtained
for the Notes a Private Placement Number issued by Standard & Poor's CUSIP
Service Bureau (in cooperation with the Securities Valuation Office of the
National Association of Insurance Commissioners).

         3M.     INSURANCE.  Such Purchaser shall have received from Heritage a
summary description of all insurance policies, fidelity bonds or other
insurance service contracts providing coverage for the Business.

         4.      PREPAYMENTS.  The Notes shall be subject to prepayment only
with respect to the required prepayments specified in Sections 4A and 4C and
the optional prepayments permitted by Section 4B.

         4A.     REQUIRED PREPAYMENTS; MATURITY.  Until the Notes shall be paid
in full, the Company shall apply to the prepayment of the Notes, without
premium, the sum of $12,000,000 (or, if less, the principal amount of the Notes
as shall at the time be outstanding) on June 30 in each of the years 2002 to
2010, inclusive, and such principal amounts of the Notes, together with
interest thereon to the prepayment dates, shall become due on such prepayment
dates, provided, however, that if the Company shall prepay all or any portion
of the Notes pursuant to Section 4B or Section 4C, or acquire any Notes
pursuant to the provisions of Section 4G, each of the principal amount payable
at maturity and the principal amount of each required prepayment of the Notes
becoming due under this Section 4A on and after the date of such prepayment or
purchase shall be reduced in the same proportion as the aggregate unpaid
principal amount of the Notes is reduced as a result of such prepayment or
acquisition.  The remaining outstanding principal amount of the Notes, together
with all interest accrued on the Notes, shall become due and payable on June
30, 2011.

         4B.     OPTIONAL PREPAYMENT.  The Notes shall be subject to
prepayment, in whole at any time or from time to time in part (in multiples of
$5,000,000 or, if less than $5,000,000, the principal amount of the Notes as
shall be outstanding at the time of such partial prepayment), at the option of
the Company, at 100% of the principal amount so prepaid plus interest thereon
to the prepayment date and the Yield Maintenance Amount, if any, with respect
to each Note.





                                     - 7 -
<PAGE>   13
         4C.     CONTINGENT PREPAYMENTS ON DISPOSITION, LOSS OF ASSETS OR
                 MERGER OR CHANGE OF CONTROL.

                 (i)      If at any time the Company or any of its Subsidiaries
disposes of assets or issues or sells Capital Stock of any Subsidiary with the
result that there are Excess Sale Proceeds, and the Company does not apply such
Excess Sale Proceeds in the manner described in Section 6G(iii)(c)(II)(x), the
Company will offer to prepay (at the price specified below and upon notice as
provided in Section 4D) a principal amount of the outstanding Notes equal to
the Allocable Proceeds.

                 (ii)     In the event of any damage to, or destruction,
condemnation or other taking of, all or any portion of the properties or assets
of the Company or any of its Subsidiaries, to the extent that the Company or
any such Subsidiary receives insurance or condemnation proceeds with the result
that Unutilized Taking Proceeds exceed $2,500,000 in respect of any fiscal year
(such excess amount being herein called "EXCESS TAKING PROCEEDS"), the Company
will offer to prepay (at the price specified in clause (v) of this Section 4C
below and upon notice as provided in Section 4D) a principal amount of the
outstanding Notes equal to the Allocable Proceeds.

                 (iii)    (a)     If at any time any Responsible Officer has
knowledge of the occurrence of any Control Event, the Company will give notice
as provided in Section 4D of such Control Event to each holder of Notes.  Such
notice shall contain and constitute an offer to prepay all, but not less than
all, of the Notes held by each holder.  Upon the occurrence of a Control Event,
the Company will not take any voluntary action that consummates or finalizes
the Change of Control resulting from such Control Event unless
contemporaneously with such action, the Company prepays all Notes required to
be prepaid in accordance with this Section 4C and Section 4D.

                          (b)     The obligation of the Company to prepay Notes
pursuant to the offer required by paragraph (a) of this clause (iii) and
accepted in accordance with Section 4D is subject to the consummation of the
Change of Control in respect of which any such offer and acceptance shall have
been made.  In the event that such Change of Control does not occur on or
before the proposed prepayment date in respect thereof, the prepayment shall be
deferred until and shall be made on the date on which such Change of Control
occurs.  The Company shall keep each holder of Notes reasonably and timely
informed of (I) any such deferral of the date of prepayment, (II) the date on
which such Change of Control and the prepayment are expected to occur, and
(III) any determination by the Company that efforts to effect such resulting
Change of Control have ceased or been abandoned (in which case any offer and
acceptance made pursuant to this Section 4C in respect of such Change of
Control shall be deemed rescinded).





                                     - 8 -
<PAGE>   14
                 (iv)     Each such offer to prepay the Notes pursuant to
Section 4C(i) or 4C(ii) shall be made (a) to the extent such prepayment
represents all or a portion of an amount equal to $7,500,000 in the aggregate
in respect of any fiscal year or $12,500,000 in the aggregate for all fiscal
years of unapplied Excess Sale Proceeds and Excess Taking Proceeds (such
unapplied amounts being herein called, "EXCESS PROCEEDS"), at a price equal to
100% of the principal amount of the Notes to be prepaid, plus interest thereon
to the prepayment date, and (b) to the extent such prepayment represents such
Excess Proceeds in excess of the $7,500,000 in the aggregate for any fiscal
year or $12,500,000 in the aggregate for all fiscal years, at a price equal to
100% of the principal amount of the Notes to be prepaid, plus interest thereon
to the prepayment date plus the Yield-Maintenance Amount, if any, thereon.

                 (v)      Each offer to prepay the Notes pursuant to Section
4C(iii) shall be made at a price equal to the principal amount of the Notes to
be prepaid, plus interest thereon to the prepayment date plus a premium of 1%
of the principal amount to be so prepaid.

         4D.     PREPAYMENT PROCEDURE FOR CONTINGENT PREPAYMENTS.

                 (i)      If at any time there are Excess Proceeds, and the
Company is required to offer to prepay the Notes with such Excess Proceeds
pursuant to clause (i) or (ii) of Section 4C, the Company will give written
notice as provided in Section 11I (which shall be in the form of an Officers'
Certificate) to the holders of the Notes not later than twelve months after the
date of the applicable Asset Sale or the end of the twelve month period
following receipt of the applicable Unutilized Taking Proceeds, as the case may
be, stating that any holder failing to elect not to accept the offer shall be
deemed to have accepted such offer and (a) setting forth in reasonable detail
all calculations required to determine the amount of Excess Proceeds and the
Yield-Maintenance Amount, if any, (b) setting forth the aggregate amount of the
Allocable Proceeds and the amount of the Allocable Proceeds which is allocable
to each Note, determined by applying the Allocable Proceeds pro rata among all
Notes outstanding on the date such prepayment is to be made according to the
aggregate then unpaid amounts of the Notes, and in reasonable detail the
calculations used in determining such amounts, and (c) stating that the Company
irrevocably offers to prepay on the date specified in such notice, which shall
not be less than 25 nor more than 45 days after the date of such notice, a
principal amount of each outstanding Note equal to the amount of Allocable
Proceeds allocated to such Note as described in paragraph (b) above, plus such
Note's share of the Allocable Proceeds allocable to any other Note the holder
of which elects on a timely basis not to accept the Company's offer
(collectively, the "NON-ACCEPTING HOLDERS"), all in accordance with the
procedures set forth in this Section 4D. Such notice shall also indicate that
any Accepting Holder that fails to elect not to accept the Pro Rata Option
shall be deemed to have accepted such option as set forth below.





                                     - 9 -
<PAGE>   15
                 (ii)     If at any time the Company is required to offer to
prepay the Notes following the occurrence of a Control Event which could result
in a Change in Control, the Company will give written notice as provided in
Section 11I (which shall be in the form of an Officer's Certificate) to the
holders of the Notes not later than ten business days following such Control
Event, stating that any holder failing to elect not to accept the offer shall
be deemed to have accepted such offer and (a) setting forth in reasonable
detail the facts and circumstances underlying such Control Event known to it,
and (b) stating that the Company irrevocably offers to prepay on the date
specified in such notice, which shall be not less 25 nor more than 45 days
after the date of such notice, at the price specified in clause (v) of Section
4C, each outstanding Note, all in accordance with the procedures set forth in
this Section 4D.

                 (iii)    Each holder of a Note electing not to accept an offer
to prepay given pursuant to this Section 4D shall make such election by notice
delivered to the Company at least 10 days prior to the date of prepayment
specified in the notice given by the Company pursuant to clause  (i) or (ii) of
this Section 4D.  Each other holder of a Note (collectively, the "ACCEPTING
HOLDERS") shall be deemed to accept the Company's offer with respect to
prepayment of such Note.  In the case of a notice given by the Company pursuant
to clause (i) of this Section each Accepting Holder shall be deemed to have
accepted the Company's offer to the extent of its Allocable Proceeds  and shall
be deemed to have accepted an agreement (the "PRO RATA OPTION") to have
prepaid, in addition to the Allocable Proceeds allocable to such Note (up to
the total Allocable Proceeds), all or any part of the balance of the principal
amount of such Note using the Allocable Proceeds that would have been paid to
the Non-Accepting Holders; provided that any Accepting Holder may elect not to
agree to the Pro Rata Option by notice delivered to the Company at least 5 days
prior to the date of prepayment specified in the notice given by the Company
pursuant to clause (i) of this Section 4D.

                 (iv)     Upon receipt of all timely notices from Non-Accepting
Holders and Accepting Holders pursuant to clause (iii) of this Section 4D, the
Company shall give written notice as provided in Section 11I (which shall be in
the form of an Officers' Certificate) to the holders of the Notes setting forth
(a) the names of each Accepting Holder and each Non-Accepting Holder, (b) the
principal amounts of the Notes of such Accepting Holders and Non-Accepting
Holders affected by the Company's offer of prepayment, (c) in the case of a
notice given by the Company pursuant to clause (i) of this Section 4D, if there
shall be any Allocable Proceeds remaining in addition to the amounts so to be
prepaid, the principal amounts of the Notes as to which such Accepting Holders
shall have exercised their Pro Rata Options together with a calculation of each
Accepting Holder's Pro Rata Option in accordance with clause (v) of this
Section 4D and (d) after giving effect to the prepayment contemplated by clause
(v) of this Section 4D in respect of such offer, the reduced amount of each
required payment thereafter becoming due with respect to the Notes under
Section 4A and upon the maturity thereof, specifying how each





                                     - 10 -
<PAGE>   16
such amount was determined, and certifying that such reduction has been
computed in accordance with such Section.

                 (v)      Upon receipt of all timely notices from Non-Accepting
Holders and Accepting Holders pursuant to clause (iii) of this Section 4D, the
Company shall, in the case of a notice given by the Company pursuant to clause
(i) of this Section 4D, allocate that portion of the Allocable Proceeds that
had been allocated to the Notes of such Non- Accepting Holders among the Notes
of Accepting Holders in proportion to the respective Allocable Proceeds
allocable to the Notes of Accepting Holders (after giving effect to any Pro
Rata Option).  Where the portion of the Allocable Proceeds thus allocated to
the Note of an Accepting Holder would exceed the maximum principal amount of
such Note which such Accepting Holder has agreed to have prepaid (including,
without limitation, pursuant to a Pro Rata Option), such excess shall be
allocated among the Notes of Accepting Holders who have agreed to accept
prepayments (including, without limitation, pursuant to a Pro Rata Option) in
amounts which still exceed the amount of prepayments previously allocated to
them pursuant to this Section 4D in proportion to the respective Allocable
Proceeds allocable to the Notes of such Accepting Holders (after giving effect
to any Pro Rata Option); and such allocation shall be repeated as many times as
shall be necessary until (a) the Allocable Proceeds have been fully allocated
or (b) it is no longer possible to allocate the Allocable Proceeds without
exceeding the maximum principal amounts of Notes which all Accepting Holders
respectively have agreed to have prepaid (including, without limitation,
pursuant to all the Pro Rata Options).

                 (vi)     The principal amount of any Notes with respect to
which an offer to prepay pursuant to this Section 4D has been made and not
rejected shall become due and payable on the date specified in the notice of
such offer given by the Company pursuant to clause (i) or (ii), as the case may
be of this Section 4D.  In the case of a notice given by the Company pursuant
to clause (i) of this Section 4D, it is understood that all Allocable Proceeds
not applied to the prepayment of the Notes or to the payment of Parity Debt
pursuant to Section 4C and this Section 4D shall constitute amounts included
within clause (x) of the definition of "Unused Proceeds Reserve".

                 (vii)    Each holder of a Note shall receive, not more than
two Business Days prior to the date scheduled for any prepayment pursuant to
this Section 4D an Officers' Certificate (i) certifying that the conditions of
this Section 4D have been fulfilled with respect to such prepayment and
specifying the particulars of such fulfillment, including, without limitation,
in reasonable detail the calculations used in computing the amount of the
prepayment in respect of the Notes and the appropriate Premium (together with,
in the case of a calculation of any Yield-Maintenance Amount, copies of the
source of market data by reference to which the Reinvestment Yield was
determined) with respect thereto, and (ii) in the case of any such prepayment
that is a partial prepayment of the Notes setting forth (a) the principal
amount to be prepaid with





                                     - 11 -
<PAGE>   17
respect to each of the Notes and specifying how each such amount was determined
and (b) after giving effect to such partial prepayment the reduced amount to be
prepaid with respect to each required payment thereafter becoming due with
respect to the Notes under Section 4A and upon the maturity thereof, specifying
how each such amount was determined, and certifying that such reduction has
been computed in accordance with such Section.  If for any reason the holder of
a Note so to be prepaid by written notice to the Company, objects to such
calculation of the Yield-Maintenance Amount, the Company shall notify all other
holders of Notes so to be prepaid of such objection.  If after any such notice
and objection, a calculation of the Yield-Maintenance Amount shall be approved
by the Required Holders of the Notes to be prepaid and specified in a written
notice provided to the Company and the holders of such Notes, such calculation
shall be final and binding upon the Company and the holders of the Notes absent
manifest error.

         4E.     NOTICE OF OPTIONAL PREPAYMENT.  The Company shall give the
holder of each Note irrevocable written notice as provided in Section 11I of
any prepayment pursuant to Section 4B not less than 30 days and not more than
60 days prior to the prepayment date, stating that such prepayment is to be
made pursuant to Section 4B and specifying (i) such prepayment date, (ii) the
principal amount of the Notes, and of the Notes held by such holder, to be
prepaid on such date, and (iii) a calculation of the estimated
Yield-Maintenance Amount, if any, with respect to such prepayment.  Notice of
prepayment having been given as aforesaid, the principal amount of the Notes
specified in such notice, together with interest thereon to the prepayment
date, and the Yield-Maintenance Amount with respect thereto, shall become due
and payable on such prepayment date.  The Company shall, on or before the day
on which it gives written notice of any prepayment pursuant to Section 4B, give
telephonic notice (confirmed in writing by facsimile transmission or overnight
courier) of the principal amount of the Notes to be prepaid and the prepayment
date to each holder which shall have designated a recipient of such notices in
the Purchaser Schedule attached hereto or by notice in writing to the Company.
In addition, each holder of a Note shall receive, at least 2 Business Days
prior to the date scheduled for any such prepayment an Officers' Certificate
(i) certifying that the conditions of Section 4B have been fulfilled and
specifying the particulars, including, without limitation, a calculation in
reasonable detail of the Yield-Maintenance Amount with attached copies of the
source of market data by reference to which the Reinvestment Yield was
determined, of such fulfillment and (ii) in the case of any such prepayment
that is a partial prepayment of the Notes, setting forth (a) the principal
amount to be prepaid with respect to each of the Notes and specifying how each
such amount was determined, and (b) after giving effect to such partial
prepayment the reduced amount to be prepaid with respect to each required
payment thereafter becoming due with respect to the Notes under Section 4A and
upon the maturity thereof, specifying how each such amount was determined, and
certifying that such reduction has been computed in accordance with such
Section.  If for any reason the holder of a Note so to be prepaid, by





                                     - 12 -
<PAGE>   18
written notice to the Company, objects to such calculation of the
Yield-Maintenance Amount, the Company shall notify all other holders of Notes
so to be prepaid of such objection.  If after any such notice and objection, a
calculation of the Yield-Maintenance Amount shall be approved by the Required
Holders and specified in a written notice provided to the Company and the other
holders of such Notes, such calculation shall be final and binding upon the
Company and the holders of the Notes absent manifest error.

         4F.     ALLOCATION OF PARTIAL PAYMENTS.  Upon any partial prepayment
of the Notes, the principal amount so prepaid shall be allocated to all Notes
at the time outstanding in proportion to the respective outstanding principal
amounts thereof, provided, that in the case of any prepayment of less than all
of the Notes pursuant to Section 4C, the principal amount of the Notes to be
prepaid will be allocable to the Notes to be prepaid as provided in Section 4C.

         4G.     RETIREMENT OF NOTES.  The Company shall not, and shall not
permit any of  its Subsidiaries or Affiliates to, prepay or otherwise retire in
whole or in part prior to their stated final maturity (other than by prepayment
pursuant to Section 4A, 4B or 4C or upon acceleration of such final maturity
pursuant to Section 7A), or purchase or otherwise acquire, directly or
indirectly, Notes held by any holder, unless the Company or such Subsidiary or
Affiliate shall have offered to prepay or otherwise retire or purchase or
otherwise acquire, as the case may be, the same proportion of the aggregate
principal amount of Notes held by each other holder of Notes at the time
outstanding, upon the same terms and conditions and such offer shall remain
open for a period of at least 20 Business Days; provided that (x) neither the
Company nor any of its Affiliates or Subsidiaries shall make any such offer to
prepay, redeem, retire, purchase or acquire Notes at a price of less than 100%
of the principal amount thereof and (y) at the time of such offer and purchase
no Default or Event of Default shall have occurred and be continuing.  Any
Notes prepaid or otherwise retired or purchased or otherwise acquired by the
Company or any of its Subsidiaries or Affiliates shall not be deemed to be
outstanding for any purpose under this Agreement.

         5.      AFFIRMATIVE COVENANTS.  The Company hereby covenants and
agrees that, from the Closing and thereafter so long as any of the Notes remain
unpaid, it will perform and comply with the terms and provisions of this
Section 5.

         5A.     FINANCIAL STATEMENTS.  The Company will maintain, and will
cause each of its Subsidiaries to maintain, a system of accounting established
and administered in accordance with GAAP.  The Company covenants that it will
deliver to each Purchaser, so long as such Purchaser or its nominee shall be
the holder of any Note, and to each holder in triplicate:





                                     - 13 -
<PAGE>   19
                 (i)      as soon as practicable and in any event within 50
         days after the end of each quarterly period in each fiscal year,
         consolidated statements of income, partners' capital and cash flows of
         the Company and its Subsidiaries for such quarterly period and (in the
         case of the second and third quarterly periods) for the period from
         the beginning of the current fiscal year to the end of such quarterly
         period, and consolidated balance sheets of the Company and its
         Subsidiaries as at the end of such quarterly period, setting forth in
         each case with respect to financial statements delivered as of any
         date and for any period after August 31, 1997, in comparative form
         figures for the corresponding period in the preceding fiscal year, all
         in reasonable detail and satisfactory in form to the Required
         Holder(s) and certified by an authorized financial officer of the
         Company as presenting fairly, in all material respects, the
         information contained therein (except for the absence of footnotes and
         subject to changes resulting from normal year-end adjustments), in
         accordance with GAAP; provided, however, that at any time when the
         Master Partnership shall be subject to the reporting requirements of
         Section 13 or 15(d) of the Exchange Act delivery within the time
         period specified above of copies of the Quarterly Report on Form 10-Q
         of the Master Partnership for such quarterly period filed with the
         Commission shall be deemed to satisfy the requirements of this clause
         (i) if (x) the Consolidated Net Income of the Company and its
         Subsidiaries accounts for at least 95% of the net income of the Master
         Partnership for such quarterly period, and (y) all such statements
         required to be delivered pursuant to this clause (i) with respect to
         the Company and its Subsidiaries are either included in such Form 10-Q
         or delivered separately by the Company together with such Form 10-Q;

                 (ii)     as soon as practicable and in any event within 95
         days after the end of each fiscal year, consolidated and consolidating
         statements of income and cash flows and a consolidated and
         consolidating statement of partners' capital (or stockholders' equity,
         as applicable) of the Company and its Subsidiaries for such year, and
         consolidated and consolidating balance sheets of the Company and its
         Subsidiaries, as at the end of such year, setting forth in each case
         with respect to financial statements delivered as of any date and for
         any period after August 31, 1997, in comparative form corresponding
         consolidated and, where applicable, consolidating figures from the
         preceding annual audit, all in reasonable detail and, as to the
         consolidated statements, reported on by Arthur Andersen LLP, or other
         independent public accountants of recognized national standing
         selected by the Company whose report shall be without limitation as to
         the scope of the audit and, as to the consolidating statements,
         certified by an authorized financial officer of the Company as
         presenting fairly, in all material respects, the information contained
         therein, in accordance with GAAP (except, in the case of such
         consolidating financial statements, for the absence of footnotes);
         provided,





                                     - 14 -
<PAGE>   20
         however, that at any time when the Master Partnership shall be  subject
         to the reporting requirements of Section 13 or 15(d) of the Exchange
         Act delivery within the time period specified above of copies of the
         Annual Report on Form 10-K of the Master Partnership for such fiscal
         year prepared in compliance with the requirements therefor and filed
         with the Commission shall be deemed to satisfy the requirements of this
         clause (ii) if (x) the Consolidated Net Income of the Company and its
         Subsidiaries accounts for at least 95% of the net income of the Master
         Partnership for such fiscal year, and (y) all such statements required
         to be delivered pursuant to this clause (ii) with respect to the
         Company and its Subsidiaries are either included in such Form 10-K and
         such reports or delivered separately by the Company together with such
         Form 10-K and such reports;

                 (iii)    promptly upon receipt thereof by the Company, copies
         of all reports submitted to the Company by independent public
         accountants in connection with each special, annual or interim audit
         of the books of the Company or any Subsidiary thereof made by such
         accountants, including without limitation the comment letter submitted
         by each such accountant to management in connection with their annual
         audit;

                 (iv)     promptly upon transmission thereof, copies of (a) all
         financial statements, proxy statements, notices and reports as the
         Company or the Master Partnership shall send or make available to the
         public Unitholders of the Master Partnership, (b) all registration
         statements (without exhibits), all prospectuses and all reports which
         the Company or the Master Partnership files with the Commission (or
         any governmental body or agency succeeding to the functions of the
         Commission), (c) all press releases and other similar written
         statements made available by the Company or the Master Partnership to
         the public concerning material developments in the business of the
         Company or the Master Partnership, as the case may be, and (d) all
         reports, notices and other similar written statements sent or made
         available by the Company or the Master Partnership to any holder of
         its Indebtedness pursuant to the terms of any agreement, indenture or
         other instrument evidencing such Indebtedness, including without
         limitation the Credit Agreement, except to the extent the same
         substantive information is already being provided pursuant to this
         Section 5A;

                 (v)      as soon as reasonably practicable, and in any event
         within 5 Business Days after a Responsible Officer obtains knowledge
         that any Default or Event of Default has occurred, a written statement
         of such Responsible Officer setting forth details of such Default or
         Event of Default and the action which the Company has taken, is taking
         and proposes to take with respect thereto;





                                     - 15 -
<PAGE>   21
                 (vi)     as soon as reasonably practicable, and in any event
         within 5 Business Days after a Responsible Officer obtains knowledge
         of (a) the occurrence of an adverse development with respect to any
         litigation or proceeding involving the Company or any of its
         Subsidiaries which in the reasonable judgment of the Company could
         reasonably be expected to have a Material Adverse Effect or (b) the
         commencement of any litigation or proceeding involving the Company or
         any of its Subsidiaries which in the reasonable judgment of the
         Company could reasonably be expected to have a Material Adverse
         Effect, a written notice of such Responsible Officer describing in
         reasonable detail such commencement of, or adverse development with
         respect to, such litigation or proceeding;

                 (vii)    as soon as possible after, and in any event within 10
         Business Days after any Responsible Officer of the Company or any
         ERISA Affiliate knows or has reason to know that, any ERISA Event has
         occurred or is expected to occur that, alone or together with any
         other ERISA Events that have occurred, in the opinion of the principal
         financial officer of the Company could reasonably be expected to
         result in liability of the Company in an aggregate amount exceeding
         $2,000,000, a statement setting forth a detailed description of such
         ERISA Event and the action, if any, that the Company or any ERISA
         Affiliate has taken, is taking or proposes to take or cause to be
         taken with respect thereto (together with a copy of any notice, report
         or other written communication filed with or given to or received from
         the PBGC, the Internal Revenue Service or the Department of Labor with
         respect to such event or condition);

                 (viii)   as soon as reasonably practicable, and in any event
         within five Business Days after a Responsible Officer obtains
         knowledge of a violation or alleged violation of any Environmental Law
         or the presence or release of any Hazardous Substance within, on,
         from, relating to or affecting any property, which in the reasonable
         judgment of the Company could reasonably be expected to have a
         Material Adverse Effect, notice thereof, and upon request, copies of
         relevant documentation;

                 (ix)     together with each delivery of financial information
         pursuant to clause (i) or clause (ii) of this Section 5A, a statement
         setting forth, together with computations in reasonable detail, the
         amount of Available Cash as of the date of the balance sheet contained
         therein and the amounts of all Net Proceeds, Excess Sale Proceeds,
         Unutilized Taking Proceeds and Unused Proceeds Reserves held by the
         Company at the end of the applicable quarterly period or fiscal year,
         as the case may be;

                 (x)      as soon as reasonably practicable, and in any event
         within 5 Business Days after a Responsible Officer obtains knowledge
         that the holder of any Note





                                     - 16 -
<PAGE>   22
         has given any notice to the Company or any Subsidiary thereof or taken
         any other action with respect to a claimed Default or Event of Default
         under this Agreement or any other Financing Documents, or that any
         Person has given any notice to the Company or any such Subsidiary or
         taken any other action with respect to a claimed default or event or
         condition of the type referred to in Section 7A(iii), a written
         statement of such Responsible Officer describing such notice or other
         action in reasonable detail and the action which the Company has
         taken, is taking and proposes to take with respect thereto;

                 (xi)     prior to the Closing Date and within 45 days after
         the end of each calendar year ending thereafter, commencing with the
         year ending December 31, 1996, a report prepared by the Company or its
         broker or agent (a) setting forth the insurance maintained pursuant to
         Section 5I, substantially in the form delivered at the Closing and
         referred to in Section 3M, and including, without limitation, the
         amounts thereof, the names of the insurers and the property, hazards
         and risks covered thereby, and certifying that all premiums with
         respect to the policies described in such report then due thereon have
         been paid and that the same are in full force and effect, (b) setting
         forth all self-insurance maintained by the Company pursuant to Section
         5I and (c) certifying that such insurance or self insurance complies
         with the requirements of such Section; and

                 (xii)    with reasonable promptness, such other information
         and data (financial or other) as from time to time may be reasonably
         requested by any holder of Notes.

         Together with each delivery of financial statements required by
clauses (i) and (ii) above, the Company will deliver to each holder of Notes an
Officers' Certificate (I) stating that the signers have reviewed the terms of
this Agreement and the other Financing Documents, and have made, or caused to
be made under their supervision, a review in reasonable detail of the
transactions and condition of the Company and its Subsidiaries during the
accounting period covered by such financial statements, and that no Default or
Event of Default has occurred and is continuing, or, if any such Default or
Event of Default then exists, specifying the nature and approximate period of
existence thereof and what action the Company has taken or is taking or
proposes to take with respect thereto, (II) specifying the amount available at
the end of such accounting period for Restricted Payments in compliance with
Section 6F and showing in reasonable detail all calculations required in
arriving at such amount, (III) demonstrating (with computations in reasonable
detail) compliance at the end of such accounting period by the Company and its
Subsidiaries with the provisions of Sections 4C, 6A, 6B, 6C, 6D, 6E(v),
6G(i)(b), 6G(i)(c), 6G(iii) and 6L, and (IV) if not specified in the related
financial statements being delivered pursuant to clauses (i) and (ii) above,
specifying the aggregate amount of interest paid or accrued by, and aggregate
rental expenses of, the Company and





                                     - 17 -
<PAGE>   23
its Subsidiaries, and the aggregate amount of depreciation, depletion and
amortization charged on the books of the Company and its Subsidiaries, during
the fiscal period covered by such financial statements.

         Together with each delivery of financial statements required by clause
(ii) above, the Company will deliver a certificate of such accountants stating
that they have reviewed the terms of this Agreement and the other Financing
Documents and that in making the audit necessary for their report on such
financial statements, they have obtained no knowledge of any Event of Default
or Default, or, if they have obtained knowledge of any Event of Default or
Default, specifying the nature and period of existence thereof.  Such
accountants, however, shall not be liable to anyone by reason of their failure
to obtain knowledge of any Event of Default or Default which would not be
disclosed in the course of an audit conducted in accordance with generally
accepted auditing standards.

         5B.     INFORMATION REQUIRED BY RULE 144A.  The Company will, upon the
request of a holder of any Note, provide such holder, and any qualified
institutional buyer designated by such holder, such financial and other
information as such holder may reasonably determine to be necessary in order to
permit compliance with the information requirements of Rule 144A under the
Securities Act in connection with the resale of Notes, except at such times as
the Company is subject to the reporting requirements of section 13 or 15(d) of
the Exchange Act.  For the purpose of this Section 5B, the term "qualified
institutional buyer" shall have the meaning specified in Rule 144A under the
Securities Act.

         5C.     INSPECTION OF PROPERTY.  The Company will permit any Person
designated in writing by any holder of the Notes which is an institutional
investor, at the Company's expense during the continuance of a Default or Event
of Default and otherwise at such holder's expense, to visit and inspect any of
the properties of the Company and its Subsidiaries, to examine the corporate
books and financial records of the Company and its Subsidiaries and make copies
thereof or extracts therefrom and to discuss the affairs, finances and accounts
of any of such partnerships or corporations with the principal officers of the
Company and its independent public accountants, all at such reasonable times
and as often as such holder may reasonably request.  The Company hereby
authorizes, and agrees to cause each of its Subsidiaries to authorize, its and
their independent public accountants to discuss with such Person the affairs,
finances and accounts of the Company and its Subsidiaries in accordance with
this Section 5C.

         5D.     COVENANT TO SECURE NOTES EQUALLY.  If the Company or any of
its Subsidiaries shall create or assume any Lien upon any of its property or
assets, whether now owned or hereafter acquired, other than Liens permitted by
the provisions of Sections 6C and 6D (unless prior written consent to the
creation or assumption thereof shall have been obtained pursuant to Section
11C), the Company will make or cause to be





                                     - 18 -
<PAGE>   24
made effective provision whereby the Notes will be contemporaneously secured by
such Lien equally and ratably with any and all other Indebtedness thereby
secured so long as any such other Indebtedness shall be so secured (including,
without limitation, the provision of any financial accommodations extended to
the holders of such other Indebtedness in connection with the release of such
Lien and/or the sale of any property subject thereto), it being understood that
the provision of such equal and ratable security shall not constitute a cure or
waiver of any related Event of Default.

         5E.     PARTNERSHIP OR CORPORATE EXISTENCE, ETC.; COMPLIANCE WITH
LAWS.

                 (i)      Except as otherwise expressly permitted in accordance
with Section 6G or 6J, (a) the Company will at all times preserve and keep in
full force and effect its partnership existence and its status as a partnership
not taxable as a corporation for U.S. federal income tax purposes, (b) the
Company will cause each of its Subsidiaries to keep in full force and effect
its partnership or corporate existence, as the case may be, and (c) the Company
will, and will cause each of its Subsidiaries to, at all times preserve and
keep in full force and effect all of its material rights and franchises;
provided, however, that the partnership or corporate existence of any
Subsidiary, and any right or franchise of the Company or any Subsidiary, may be
terminated notwithstanding this Section 5E if such termination (x) is in the
best interest of the Company and the Subsidiaries, (y) is not disadvantageous
to the holders of the Notes in any material respect and (z) could not
reasonably be expected to have a Material Adverse Effect.

                 (ii)     The Company will, and will cause each of its
Subsidiaries to, at all times comply with all laws, regulations and statutes
(including without limitation any zoning or building ordinances or code or
Environmental Laws) applicable to it except for any failure to so comply which,
individually or in the aggregate, could not reasonably be expected to have a
Material Adverse Effect.

                 (iii)    The Company will notify the holders of the Notes a
reasonable time prior to the adoption of any amendment to the Partnership
Agreement, the Credit Agreement or any Operative Agreement and will include in
that notice a reasonably detailed description of such amendment and the
intended effects thereof.

         5F.     PAYMENT OF TAXES AND CLAIMS.  The Company will, and will
cause each of its Subsidiaries to, pay all taxes, assessments and other
governmental charges imposed upon it or any of its Subsidiaries, or any of its
or its Subsidiaries' properties or assets or in respect of any of its or any of
its Subsidiaries' franchises, business, income or profits when the same become
due and payable, and all claims (including without limitation claims for labor,
services, materials and supplies) for sums which have become due and payable
and which by law have or might become a Lien upon any of its or any of its
Subsidiaries' properties or assets; provided that no such tax, assessment,
charge or claim





                                     - 19 -
<PAGE>   25
need be paid if it is being contested in good faith by appropriate proceedings
promptly initiated and diligently conducted and if such reserves or other
appropriate provision, if any, as shall be required by GAAP shall have been
made therefor and be adequate in the good faith judgment of the Board of
Directors of the General Partner.

         5G.     COMPLIANCE WITH ERISA.  The Company will, and will cause its
Subsidiaries to, comply in all material respects with the provisions of ERISA
and the Code applicable to the Company and its Subsidiaries and their
respective employee benefit programs.

         5H.     MAINTENANCE AND SUFFICIENCY OF PROPERTIES.

                 (i)      The Company will maintain or cause to be maintained
in good repair, working order and condition, ordinary wear and tear excepted,
all properties used in the business of the Company and its Subsidiaries and
from time to time will make or cause to be made all appropriate repairs,
renewals and replacements thereof, all to the extent necessary to avoid a
Material Adverse Effect.

                 (ii)     The Company will maintain and will cause to be
maintained as employees of the Company and its Subsidiaries such number of
individuals, having appropriate skills, as may be necessary from time to time
to sustain continuous operation of the Business at the time.  Except as
described on Schedule 8H, the Company will continue and will cause its
Subsidiaries to continue to own or have valid rights to use all of the Assets
constituting personal or intellectual property (including without limitation
computer equipment, computer software and other intellectual property)
reasonably necessary for the operation of the Business, in each case subject to
no Liens except such as are permitted by Section 6C.

         5I.     INSURANCE.

                 (i)      The Company will, and will cause its Subsidiaries to,
at its or their expense, at all times maintain, or cause to be maintained, with
financially sound and reputable insurers, insurance with respect to their
properties and business with coverages comparable to those generally carried by
companies of similar size that conduct the same or similar business and have
similar properties in the same general areas in which the Company conducts its
business; provided, however, that the Company may maintain a system of
self-insurance in an amount not exceeding an amount as is customary for
companies with established reputations engaged in the same or similar business
and owning and operating similar properties.

                 (ii)     The Company will, and will cause each of its
Subsidiaries to, pay as and when the same become due and payable the premiums
for all insurance policies that the Company and its Subsidiaries are required
to maintain hereunder.





                                     - 20 -
<PAGE>   26
         5J.     ENVIRONMENTAL LAWS.  The Company will, and will cause each of
its Subsidiaries to:

                          (i)     comply with all applicable Environmental Laws
                 and any permit, license, or approval required under any
                 Environmental Law, except for failures to so comply which
                 could not reasonably be expected to have a Material Adverse
                 Effect;

                          (ii)    store, use, release, or dispose of any
                 Hazardous Substance at any property owned or leased by the
                 Company or any of its Subsidiaries in a manner which could not
                 reasonably be expected to have a Material Adverse Effect;

                          (iii)   avoid committing any act or omission which
                 would cause any Lien to be asserted against any property owned
                 by the Company or any of its Subsidiaries pursuant to any
                 Environmental Law, except where such Lien could not reasonably
                 be expected to have a Material Adverse Effect;

                          (iv)    use, handle or store any propane in
                 compliance, in all material respects, with all applicable
                 laws.

         5K.     OPERATIVE AGREEMENTS.  The Company will perform and comply
with all of its obligations under each of the Operative Agreements to which it
is a party, will enforce each such Operative Agreement against each other party
thereto and will not accept the termination of any such Operative Agreement or
any amendment or supplement thereof or modification or waiver thereunder,
unless any such failure to perform, comply or enforce or any such acceptance
could not, individually or in the aggregate, reasonably be expected to have a
Material Adverse Effect.

         5L.     AFTER-ACQUIRED PROPERTY.  From and after the date of the
Closing, the Company will, and will cause each of its Subsidiaries to, execute
and deliver such amendments to the Security Agreement, execute and deliver such
instruments and agreements (including, without limitation, such Certificates
and Stock Powers) and execute and cause to be duly recorded, published,
registered or filed in the appropriate jurisdictions such Financing Statements,
as shall be necessary to grant to the Collateral Agent a valid, perfected,
first priority security interest, subject to Liens permitted by the Security
Agreement, in any asset acquired by the Company or any Subsidiary of the
Company (including, without limitation, the Capital Stock of any Subsidiary)
after the Closing, to the extent such asset would have been included in the
Collateral granted at the Closing had the Company or one of its Subsidiaries
owned such asset as of the Closing.  The Company will pay or cause to be paid
all taxes, fees and other governmental charges





                                     - 21 -
<PAGE>   27
in connection with the execution, delivery, recording, publishing, registration
and filing of such documents and instruments in such places.

         5M.     FURTHER ASSURANCES.  At any time and from time to time
promptly, the Company shall, at its expense, execute and deliver to each holder
of a Note and the Collateral Agent such instruments and documents, and take
such further action, as the holders of the Notes may from time to time
reasonably request, in order to further carry out the intent and purpose of
this Agreement and the other Financing Documents and to establish, perfect,
preserve and protect the rights, interests and remedies created, or intended to
be created, in favor of the holders of the Notes hereunder and thereunder,
including, without limitation, the execution and delivery of Certificates and
Stock Powers and the execution, delivery, recordation and filing of Financing
Statements and continuation statements under the Uniform Commercial Code of any
applicable jurisdiction, and the delivery of satisfactory opinions of counsel.

         5N.     NO ACTION REQUIRING REGISTRATION.  Neither the Company nor
anyone acting on its behalf will take any action which would subject the
issuance and sale of the Notes to the registration and prospectus delivery
provisions of the Securities Act or to the registration or qualification
provisions of any securities or Blue Sky law of any applicable jurisdiction.

         5O.     BOOKS AND ACCOUNTS.  The Company will, and will cause each of
its Subsidiaries to, maintain proper books of record and account in which full,
true and proper entries shall be made of its transactions and set aside on its
books from its earnings for each fiscal year all such proper reserves as in
each case shall be required in accordance with GAAP.

         5P.     AVAILABLE CASH RESERVES.  The Company will maintain an amount
of cash reserves that is necessary or appropriate in the reasonable discretion
of the General Partner to (i) provide for the proper conduct of the business of
the Company and its Subsidiaries (including reserves for future capital
expenditures) subsequent to such quarter, (ii) comply with applicable law or
any loan agreement, security agreement, mortgage, debt instrument or other
agreement or obligation to which the Company or any Subsidiary is a party or by
which it is bound or its assets are subject (including the Financing Documents)
and (iii) provide funds for distributions to partners of the Master Partnership
and the General Partner in respect of any one or more of the next four
quarters; provided that the General Partner need not establish cash reserves
pursuant to clause (iii) if the effect of such reserves would be that the
Master Partnership is unable to distribute the Minimum Quarterly Distribution
(as defined in the Agreement of Limited Partnership of the Master Partnership)
on all Common Units with respect to such quarter; and provided, further, that
disbursements made by the Company or a Subsidiary of the Company or cash
reserves established, increased or reduced after the end of such quarter





                                     - 22 -
<PAGE>   28
but on or before the date of determination of Available Cash with respect to
such quarter shall be deemed to have been made, established, increased or
reduced for purposes of determining Available Cash, within such quarter if the
General Partner so determines.  In addition, without limiting the foregoing,
Available Cash for any fiscal quarter shall reflect reserves equal to (x) 50%
of the interest projected to be paid on the Notes in the next succeeding fiscal
quarter, plus (y) beginning with a date three fiscal quarters before a
scheduled principal payment date on the Notes, 25% of the aggregate principal
amount thereof due on any such payment date in the third succeeding fiscal
quarter, 50% of the aggregate principal amount due on any such payment date in
the second succeeding fiscal quarter and 75% of the aggregate principal amount
due on any quarterly payment date in the next succeeding fiscal quarter, plus
(z) the Unused Proceeds Reserve as of the date of determination; provided that
the foregoing reserves for amounts to be paid on the Notes shall be reduced by
the aggregate amount of advances available to the Company from responsible
financial institutions under binding, irrevocable (a) credit or financing
commitments (which are subject to no conditions which the Company is unable to
meet) and (b) letters of credit (which are subject to no conditions which the
Company is unable to meet), in each case to be used to refinance such amounts
to the extent such amounts could be borrowed and remain outstanding under
Sections 6A and 6B.

         5Q.     PARITY DEBT.

                 (i)      The Company shall ensure that the lenders from time
to time in respect of any outstanding Parity Debt shall, in the documents
governing the terms of such Indebtedness, (a) recognize the existence and
validity of the obligations represented by the Notes and (b) agree to refrain
from making or asserting any claim that the Financing Documents or the
obligations represented by the Notes are invalid or not enforceable in
accordance with its and their terms as a result of the circumstances
surrounding the incurrence of such obligations.

                 (ii)     Each holder of Notes from time to time, as evidenced
by its acceptance of such Notes, (a) acknowledges the existence and validity of
the obligations of the Company under the Credit Agreement (and any replacement,
extension, renewal, refunding or refinancing thereof permitted by clause (ii)
or (iii) of Section 6B, as the case may be) and (b) agrees to refrain from
making or asserting any claim that such obligations or the instruments
governing the terms thereof are invalid or not enforceable in accordance with
its and their terms as a result of the circumstances surrounding the incurrence
of such obligations.

         6.      NEGATIVE COVENANTS.  The Company hereby covenants and agrees
that from the Closing and thereafter so long as any of the Notes are
outstanding:

         6A.     FINANCIAL RATIOS.  The Company will not permit:





                                     - 23 -
<PAGE>   29
                          (i)     Ratio of Consolidated Funded Indebtedness to
                 Consolidated EBITDA.  The ratio as of the end of any fiscal
                 quarter of Consolidated Funded Indebtedness to Consolidated
                 EBITDA to exceed 5.25 to 1.00; or

                          (ii)    MINIMUM INTEREST COVERAGE.  The ratio as of
                 the end of any fiscal quarter of Consolidated EBITDA to
                 Consolidated Interest Expense to be less than (a) 2.00 to 1.00
                 prior to the first anniversary of the Closing Date or (b) 2.25
                 to 1.00 on or after the first anniversary of the Closing Date.

         Notwithstanding any of the provisions of this Agreement the Company
will not, and will not permit any Subsidiary to, enter into any transaction
pursuant to Section 6B, clauses (vii), (viii) and (xiv)(b) of Section 6C,
Section 6F, or clauses (i)(b), (i)(c), (ii)(b) and (iii) of Section 6G, (x) if
after giving effect to any such transaction a Default or Event of Defaults
exists, or (y) if the consummation of any such transaction would result in a
violation of this Section 6A, calculated for such purpose as of the date on
which such transaction were to be consummated both immediately before and after
giving effect to the consummation thereof; provided, however, that in the case
of transactions pursuant to Section 6G, the calculation shall be made on a pro
forma basis in accordance with GAAP after giving effect to any such
transaction, with the ratio recomputed as at the last day of the most recently
ended fiscal quarter of the Company as if such transaction had occurred on the
first day of the relevant four quarter period.

         6B.     INDEBTEDNESS.  The Company will not, and will not permit any
of its Subsidiaries to, create, incur, assume, or otherwise become directly or
indirectly liable with respect to, any Indebtedness, except (subject to the
provisions of Section 6D):

                          (i)     the Company may become and remain liable with
                 respect to Indebtedness evidenced by the Notes and
                 Indebtedness incurred in connection with any extension,
                 renewal, refunding or refinancing of Indebtedness evidenced by
                 the Notes, provided that (x) the principal amount of such
                 Indebtedness shall not exceed the principal amount of the
                 Indebtedness evidenced by the Notes, together with any accrued
                 interest and Yield Maintenance Amount, with respect thereto
                 being extended, renewed, refunded or refinanced, and (y) such
                 Indebtedness may not have an average life to maturity shorter
                 than the remaining average life to maturity of the
                 Indebtedness being extended, renewed, refunded or refinanced;

                          (ii)    the Company may become and remain liable with
                 respect to Indebtedness incurred under the Revolving Working
                 Capital Facility and for any purpose permitted by the
                 Revolving Working Capital Facility and





                                     - 24 -
<PAGE>   30
                 any Indebtedness incurred for any such permitted purpose which
                 replaces, extends, renews, refunds or refinances any such
                 Indebtedness, in whole or in part; provided that the aggregate
                 principal amount of Indebtedness permitted under this clause
                 (ii) shall not at any time exceed an amount equal to (x)
                 $15,000,000 less (y) the amount of Indebtedness, if any,
                 outstanding under the revolving working capital facility
                 permitted by clause (v) of this Section 6B;

                          (iii)   the Company may become and remain liable with
                 respect to Indebtedness incurred by the Company under the
                 Acquisition Facility and any Indebtedness incurred for such
                 permitted purpose which replaces, extends, renews, refunds or
                 refinances any such Indebtedness, in whole or in part;
                 provided that the aggregate principal amount of Indebtedness
                 permitted under this clause (iii) shall not at any time exceed
                 $35,000,000;

                          (iv)     any Subsidiary of the Company may become and
                 remain liable with respect to Indebtedness of such Subsidiary
                 owing to the Company or to a Wholly-Owned Subsidiary of the
                 Company;

                          (v)     Heritage Service Corp. may become and remain
                 liable with respect to Indebtedness incurred under a revolving
                 working capital facility and for any purpose permitted by such
                 revolving working capital facility and any Indebtedness
                 incurred for any permitted purpose which replaces, extends,
                 renews, refunds or refinances any such Indebtedness, in whole
                 or in part; provided that the aggregate principal amount of
                 Indebtedness permitted under this clause (v) shall not at any
                 time exceed $1,000,000;

                          (vi)    the Company and any of its Subsidiaries may
                 become and remain liable with respect to Indebtedness relating
                 to any business, property or assets acquired by or contributed
                 to the Company or such Subsidiary or which is secured by a
                 loan on any property or assets acquired by or contributed to
                 the Company or such Subsidiary to the extent such Indebtedness
                 existed at the time such business, property or assets were so
                 acquired or contributed, and if such Indebtedness is secured
                 by such property or assets, such security interest does not
                 extend to or cover any other property of the Company or any of
                 its Subsidiaries; provided that (a) immediately after giving
                 effect to such acquisition or contribution, the Company could
                 incur at least $1.00 of additional Indebtedness pursuant to
                 clause (xiii) of this Section 6B and (b) such Indebtedness was
                 not incurred in anticipation of such acquisition or
                 contribution;





                                     - 25 -
<PAGE>   31
                          (vii)   the Company and any of its Subsidiaries may
                 become and remain liable with respect to Indebtedness arising
                 from the honoring by a bank or other financial institution of
                 a check, draft or similar instrument drawn against
                 insufficient funds in the ordinary course of business,
                 provided that such Indebtedness is extinguished within 2
                 Business Days of its incurrence;

                          (viii)  M-P Oils Partnership may become and remain
                 liable with respect to Indebtedness in an aggregate principal
                 amount not to exceed $3,000,000, and the Company may become
                 and remain liable with respect to Guarantees of such
                 Indebtedness of M-P Oils Partnership and of Indebtedness of
                 Bi-State Propane, provided that the aggregate amount of all
                 Guarantees permitted by this clause (viii) shall not exceed
                 $5,000,000;

                          (ix)    any Person that after the date of Closing
                 becomes a Subsidiary of the Company may become and remain
                 liable with respect to any Indebtedness to the extent such
                 Indebtedness existed at the time such Person became a
                 Subsidiary; provided that (a) immediately after giving effect
                 to such Person becoming a Subsidiary of the Company, the
                 Company could incur at least $1.00 of additional Indebtedness
                 in compliance with clause (xiii) of this Section 6B and (b)
                 such Indebtedness was not incurred in anticipation of such
                 Person becoming a Subsidiary of the Company;

                          (x)     the Company and any of its Subsidiaries may
                 become and remain liable with respect to Indebtedness owed to
                 any person providing workers' compensation, health, disability
                 or other employee benefits or property, casualty or liability
                 insurance to the Company or any of its Subsidiaries, pursuant
                 to reimbursement or indemnification obligations to such
                 person;

                          (xi)    the Company and any of its Subsidiaries may
                 become and remain liable with respect to Indebtedness in
                 respect of performance bonds, bid bonds, appeal bonds, surety
                 bonds and similar obligations, in each case provided in the
                 ordinary course of business, including those incurred to
                 secure health, safety and environmental obligations in the
                 ordinary course of business, and any extension, renewal or
                 refinancing thereof to the extent not provided to secure the
                 repayment of other Indebtedness and to the extent that the
                 amount of refinancing Indebtedness is not greater than the
                 amount of Indebtedness being refinanced;

                          (xii)   the Company may become and remain liable with
                 respect to Indebtedness incurred in respect of Capitalized
                 Lease Obligations; provided





                                     - 26 -
<PAGE>   32
                 that the Lien in respect thereof is permitted by clause (viii)
                 of Section 6C; and

                          (xiii)  the Company and its Subsidiaries may become
                 and remain liable with respect to Indebtedness, in addition to
                 that otherwise permitted by the other clauses of this Section
                 6B, if on the date the Company or any of its Subsidiaries
                 becomes liable with respect to any such additional
                 Indebtedness and immediately after giving effect thereto and
                 to the substantially concurrent repayment of any other
                 Indebtedness (a) the ratio of Consolidated EBITDA to
                 Consolidated Debt Service is equal to or greater than 2.50 to
                 1.0, (b) the ratio of Consolidated EBITDA to Consolidated Pro
                 Forma Maximum Debt Service is equal to or greater than 1.25 to
                 1.0 and (c) no Default or Event of Default shall exist.

         6C.     LIENS.  The Company will not, and will not permit any of its
Subsidiaries to, create, assume, incur or suffer to exist any Lien upon or with
respect to any of its properties or assets, whether now owned or hereafter
acquired, or any income or profits therefrom (whether or not provision is made
for the equal and ratable securing of the Notes in accordance with the
provisions of Section 5D), except:

                          (i)     Liens existing on the date hereof on the
                 property and assets of the Company or any of its Subsidiaries
                 as described in Schedule 6C;

                          (ii)    Liens for taxes, assessments or other
                 governmental charges the payment of which is not yet due and
                 payable or the validity of which is being contested in good
                 faith in compliance with Section 5F;

                          (iii)   attachment or judgment Liens not giving rise
                 to an Event of Default and with respect to which the
                 underlying action has been appealed or is being contested in
                 good faith in compliance with Section 5F;

                          (iv)    Liens of lessors, landlords, carriers,
                 vendors, mechanics, materialmen, warehousemen, repairmen and
                 other like Liens incurred in the ordinary course of business
                 the payment of which is not yet due or which is being
                 contested in good faith in compliance with Section 5F, in each
                 case not incurred or made in connection with the borrowing of
                 money, the obtaining of advances or credit or the payment of
                 the deferred purchase price of property, provided that such
                 Liens do not materially interfere with the conduct of the
                 business of the Company and its Subsidiaries taken as a whole;

                          (v)     Liens (other than any Lien imposed by ERISA)
                 incurred and pledges and deposits made in the ordinary course
                 of business (a) in





                                     - 27 -
<PAGE>   33
                 connection with workers' compensation, unemployment insurance,
                 old age pensions, retiree health benefits and other types of
                 social security, or (b) to secure (or to obtain letters of
                 credit that do not constitute Indebtedness and that secure)
                 the performance of tenders, statutory obligations, surety and
                 appeal bonds, bids, leases, performance bonds, contracts and
                 other similar obligations, in each case not incurred or made
                 in connection with the borrowing of money or the obtaining of
                 advances or credit; provided that such Liens do not materially
                 interfere with the conduct of the business of the Company and
                 its Subsidiaries taken as a whole;

                          (vi)    zoning restrictions, easements, licenses,
                 reservations, provisions, covenants, conditions, waivers,
                 restrictions on the use of property or irregularities of title
                 (and with respect to leasehold interests, mortgages,
                 obligations, liens and other encumbrances incurred, created,
                 assumed or permitted to exist and arising by, through or under
                 a landlord or owner of the leased property, with or without
                 consent of the lessee) which do not in the aggregate
                 materially detract from the value of its property or assets or
                 materially impair the use thereof in the operation of its
                 business;

                          (vii)   Liens existing on any property of a Person at
                 the time such Person becomes a Subsidiary of the Company or
                 existing at the time of acquisition upon any property acquired
                 by the Company or any of its Subsidiaries at the time such
                 property is so acquired, through purchase, merger or
                 consolidation or otherwise (whether or not the Indebtedness
                 secured thereby shall have been assumed); provided, however,
                 that in the case of any such Lien (1) such Lien shall at all
                 times be confined solely to any such property and, if required
                 by the terms of the instrument creating such Lien, other
                 property which is an improvement to such acquired property,
                 (2) such Lien was not created in anticipation of such
                 transaction, and (3) the Indebtedness secured by such Lien
                 shall be permitted under Section 6B;

                          (viii)  Liens created to secure all or any part of
                 the purchase price, or to secure Indebtedness (other than
                 Parity Debt) incurred or assumed to pay all or any part of the
                 purchase price or cost of construction, of property acquired
                 or constructed by the Company or any of its Subsidiaries after
                 the Closing Date or to secure obligations incurred in
                 consideration of non-compete agreements ("NON-COMPETE
                 OBLIGATIONS") entered into in connection with any such
                 acquisition, including an acquisition complying with clause
                 (b)(y) of Section 6I; provided that (a) any such Lien shall be
                 confined solely to the item or items of such property (or
                 improvement thereon) so acquired or constructed and, if
                 required by the terms of the





                                     - 28 -
<PAGE>   34
                 instrument creating such Lien, other property (or improvement
                 thereon) which is an improvement to such acquired or
                 constructed property (and, in the case of any Lien securing
                 Non-Compete Obligations, shall also be limited to (x) such
                 items of property so acquired which are not of the character
                 included in the definition of Collateral and (y) such
                 additional items of the property so acquired, having a total
                 fair market value (as determined in good faith by the Board of
                 Directors of the General Partner) for the sum of (x) and (y)
                 that is not more than the amount of the Non-Compete
                 Obligations so secured), (b) such item or items of property so
                 acquired are not required to become part of the Collateral
                 under the terms of the Security Documents, (c) any such Lien
                 shall be created contemporaneously with, or within 180 days
                 after, the acquisition or construction of such property, (d)
                 such Lien does not exceed an amount equal to 85% of the fair
                 market value (100% in the case of Capitalized Lease
                 Obligations and 35% in the case of Non-Compete Obligations) of
                 such property (as determined in good faith by the Board of
                 Directors of the General Partner) at the time of acquisition
                 thereof and (e) after giving effect to such Lien no Default or
                 Event of Default shall exist;

                          (ix)    Liens on property or assets of any Subsidiary
                 of the Company securing Indebtedness of such Subsidiary owing
                 to the Company or a Wholly-Owned Subsidiary;

                          (x)     leases or subleases of equipment to customers
                 which do not materially interfere with the conduct of the
                 business of the Company and its Subsidiaries taken as a whole;

                          (xi)    easements, exceptions or reservations in any
                 property of the Company or any Subsidiary granted or reserved
                 for the purpose of pipelines, roads, the removal of oil, gas,
                 coal or other minerals, and other like purposes, or for the
                 joint or common use of real property, facilities and
                 equipment, which are incidental to, and do not materially
                 interfere with, the ordinary conduct of the business of the
                 Company or any of its Subsidiaries;

                          (xii)   Liens (other than Liens securing
                 Indebtedness) on the property or assets of any Subsidiary of
                 the Company in favor of the Company or any other Wholly-Owned
                 Subsidiary of the Company;

                          (xiii)  Liens on the property or assets of Heritage
                 Service Corp. securing Indebtedness permitted by clause (v) of
                 Section 6B provided that (i) such Liens shall at all times be
                 confined to property or assets having an





                                     - 29 -
<PAGE>   35
                 aggregate fair market value not exceeding $2,000,000, and (ii)
                 as a result of any such Lien no Default or Event of Default
                 shall exist;

                          (xiv)   Liens created by any of the Security
                 Documents securing (a) Indebtedness evidenced by the Notes,
                 the Acquisition Facility or the Revolving Working Capital
                 Facility) and (b) Additional Parity Debt; and

                          (xv)    any Lien renewing, extending or refunding any
                 Lien permitted by this Section 6C, provided that (a) the
                 principal amount of the Indebtedness secured by any such Lien
                 shall not exceed the principal amount of such Indebtedness
                 outstanding immediately prior to the renewal, extension or
                 refunding of such Lien and (b) no assets encumbered by any
                 such Lien other than the assets encumbered immediately prior
                 to such renewal, extension or refunding shall be encumbered
                 thereby.

         Notwithstanding the foregoing, the Company will not, and will not
permit any of its Subsidiaries to, create, assume or incur any Lien upon or
with respect to (a) any Subsidiary stock held by the Company or any Subsidiary
of the Company, or (b) any of its proprietary software developed by or on
behalf of the Company or its Affiliates necessary and useful for the conduct of
the Business.  No Lien permitted under this Section 6C shall result in
over-collateralization except as required by conventional practice for specific
types of borrowings.

         6D.     PRIORITY DEBT.   The Company will not permit Priority Debt, at
any time, to exceed the sum of (i) $5,000,000 plus (ii) 10% of the then
Consolidated Tangible Net Worth of the Company and its Subsidiaries (but only
to the extent such Consolidated Tangible Net Worth is positive).  The
provisions of this Section 6D are further limitations on Priority Debt that
shall otherwise be permitted by Section 6A, 6B, or 6C.

         6E.     LOANS, ADVANCES, INVESTMENTS AND CONTINGENT LIABILITIES.
The Company will not, and will not permit any of its Subsidiaries to, directly
or indirectly, purchase or own any stock, obligations or securities of, or any
other interest in, or make any capital contribution to, any Person, make or
permit to remain outstanding any loan or advance to, or guarantee, endorse or
otherwise be or become contingently liable, directly or indirectly, in
connection with the obligations of any Person, or make any other Investment,
except:

                          (i)     the Company or any of its Subsidiaries may
                 make and own Investments (w) consisting of Units issued for
                 purposes of making acquisitions, (x) arising out of loans and
                 advances to employees incurred in the ordinary course of
                 business and consisting of advances to pay reimbursable
                 expenditures, (y) arising out of extensions of trade credit or





                                     - 30 -
<PAGE>   36
                 advances to third parties in the ordinary course of business
                 and (z) acquired by reason of the exercise of customary
                 creditors' rights upon default or pursuant to the bankruptcy,
                 insolvency or reorganization of a debtor;

                          (ii)    Guarantees that constitute Indebtedness to
                 the extent permitted by Sections 6A and 6B and other
                 Guarantees that are not Guarantees of Indebtedness and are
                 undertaken in the ordinary course of business;

                         (iii)   investment in (collectively, "CASH 
                 EQUIVALENTS")

                                  (a)      marketable obligations issued or
                          unconditionally guaranteed by the United States of
                          America, or issued by any agency thereof and backed
                          by the full faith and credit of the United States of
                          America, in each case maturing one year or less from
                          the date of acquisition thereof,

                                  (b)      marketable direct obligations issued
                          by any state of the United States of America or any
                          political subdivision of any such state or any public
                          instrumentality thereof maturing within one year from
                          the date of acquisition thereof and having as at such
                          date the highest rating obtainable from either
                          Standard & Poor's Rating Group or Moody's Investors
                          Service, Inc.,

                                  (c)      commercial paper maturing no more
                          than 270 days from the date of creation thereof and
                          having as at the date of acquisition thereof one of
                          the two highest ratings obtainable from either
                          Standard & Poor's Rating Group or Moody's Investors
                          Service, Inc.,

                                  (d)      certificates of deposit maturing one
                          year or less from the date of acquisition thereof (1)
                          issued by commercial banks incorporated under the
                          laws of the United States of America or any state
                          thereof or the District of Columbia or Canada or
                          issued by the United States branch of any commercial
                          bank organized under the laws of any country in
                          Western Europe or Japan, with capital and
                          stockholders' equity of at least $500,000,000 (or the
                          equivalent in the currency of such country), (A) the
                          commercial paper or other short term unsecured debt
                          obligations of which are as at such date rated either
                          A-2 or better (or comparably if the rating system is
                          changed) by Standard & Poor's Rating Group or Prime-2
                          or better (or comparably if the rating system is
                          changed) by Moody's Investors





                                     - 31 -
<PAGE>   37
                          Service, Inc. or (B) the long-term debt obligations
                          of which are as at such date rated either A or better
                          (or comparably if the rating system is changed) by
                          Standard & Poor's Rating Group or A2 or better (or
                          comparably if the rating system is changed) by
                          Moody's Investors Service, Inc.  ("PERMITTED BANKS")
                          or (2) issued by Bank of Oklahoma, National
                          Association, in an aggregate amount for all such
                          certificates of deposit issued by Bank of Oklahoma,
                          National Association, not to exceed $1,000,000,

                                  (e)      Eurodollar time deposits having a
                          maturity of less than 270 days from the date of
                          acquisition thereof purchased directly from any
                          Permitted Bank,

                                  (f)      bankers' acceptances eligible for
                          rediscount under requirements of The Board of
                          Governors of the Federal Reserve System and accepted
                          by Permitted Banks, and

                                  (g)      obligations of the type described in
                          clause (a), (b), (c), (d) or (e) above purchased from
                          a securities dealer designated as a "primary dealer"
                          by the Federal Reserve Bank of New York or from a
                          Permitted Bank as counterparty to a written
                          repurchase agreement obligating such counterparty to
                          repurchase such obligations not later than 14 days
                          after the purchase thereof and which provides that
                          the obligations which are the subject thereof are
                          held for the benefit of the Company or any of its
                          Subsidiaries by a custodian which is a Permitted Bank
                          and which is not a counterparty to the repurchase
                          agreement in question;

                          (iv)    the Company or any of its Subsidiaries may
                 acquire Capital Stock or other ownership interests of a Person
                 (i) located in the United States of America or Canada, (ii)
                 incorporated or otherwise formed pursuant to the laws of the
                 United States of America or Canada or any state or province
                 thereof or the District of Columbia and (iii) engaged in
                 substantially the same business as the Company which Person at
                 the time of such acquisition is, or as a result thereof
                 becomes, a Subsidiary of the Company;

                          (v)     the Company or any of its Subsidiaries may
                 make and own Investments (in addition to Investments permitted
                 by clauses (i), (ii), (iii), and (iv) of this Section 6E) in
                 any Person incorporated or otherwise formed pursuant to the
                 laws of the United States of America or Canada or any state or
                 province thereof or the District of Columbia; provided,
                 however, that (i)





                                     - 32 -
<PAGE>   38
                 the sum of (a) the aggregate amount of all such Investments
                 made by the Company and its Subsidiaries following the Closing
                 Date which are outstanding pursuant to this clause (v) plus
                 (b) all other Investments held by the Company and its
                 Subsidiaries which are outstanding as of the Closing Date and
                 listed on Schedule 6E shall not at any date of determination
                 exceed 10% of Consolidated Net Tangible Assets (the
                 "INVESTMENT LIMIT"); (ii) the representation in Section 8S
                 shall be true and correct as of the date of determination; and
                 (iii) the aggregate amount of all such Investments made by the
                 Company and its Subsidiaries and outstanding pursuant to this
                 clause (v) in Persons engaged in a business which is not
                 substantially the same as a line of business described in
                 Section 6H shall not at any date exceed $3,000,000; and (iv)
                 no Investment pursuant to this clause (v) may be made unless
                 if after giving effect thereto no Default or Event of Default
                 exists;

                          (vi)    the Company may make and become liable with
                 respect to any Interest Rate Agreements; and

                          (vii)   any Subsidiary of the Company may make
                 Investments in the Company or in a Wholly-Owned Subsidiary of
                 the Company.

         6F.     RESTRICTED PAYMENTS.  The Company will not directly or
indirectly declare, order, pay, make or set apart any sum for any Restricted
Payment, except that the Company may declare or order, and make, pay or set
apart, during each fiscal quarter a Restricted Payment if (i) such Restricted
Payment, together with all other Restricted Payments during such fiscal
quarter, do not in the aggregate exceed the amount of Available Cash with
respect to the immediately preceding quarter, and (ii) no Default or Event of
Default exists before or immediately after any such proposed action.

         6G.     CONSOLIDATION, MERGER, SALE OF ASSETS, ETC.  The Company will
not, and will not permit any of its Subsidiaries to, directly or indirectly,

                          (i)     consolidate with or merge into any other
                 Person or permit any other Person to consolidate with or merge
                 into it, except that:

                                  (a)      any Subsidiary of the Company may
                          consolidate with or merge into the Company or a
                          Wholly-Owned Subsidiary of the Company if the Company
                          or a Wholly-Owned Subsidiary of the Company, as the
                          case may be, shall be the surviving Person; and

                                  (b)      any entity (other than a Subsidiary
                          of the Company) may consolidate with or merge into
                          the Company or a Subsidiary if the Company or a
                          Subsidiary of the Company, as the case may be,





                                     - 33 -
<PAGE>   39
                          shall be the surviving Person and if, immediately
                          after giving effect to such transaction, (I) the
                          Company and its Subsidiaries (x) shall not have a
                          Consolidated Net Worth, determined in accordance with
                          GAAP applied on a basis consistent with the
                          consolidated financial statements of the Company most
                          recently delivered pursuant to Section 5A, of less
                          than the Consolidated Net Worth of the Company
                          immediately prior to the effectiveness of such
                          transaction, satisfaction of this requirement to be
                          set forth in reasonable detail in an Officers'
                          Certificate delivered to each holder of a Note at the
                          time of such transaction, and (y) could incur at
                          least $1.00 of additional Indebtedness in compliance
                          with Section 6A and clause (xiii) of Section 6B.
                          (II) substantially all of the assets of the Company
                          and its Subsidiaries, taken as a whole, shall be
                          located and substantially all of their business shall
                          be conducted within the continental United States of
                          America or Canada and (III) no Default or Event of
                          Default shall exist and be continuing; and

                                  (c)      the Company may consolidate with or
                          merge into any other entity if (I) the surviving
                          entity is a corporation or limited partnership
                          organized and existing under the laws of the United
                          States of America or any state thereof or the
                          District of Columbia, with substantially all of its
                          properties located and its business conducted  within
                          the continental United States of America, (II) such
                          corporation or limited partnership expressly and
                          unconditionally assumes in writing the obligations of
                          the Company under this Agreement, the Notes and the
                          other Financing Documents, and delivers to each
                          holder of a Note at the time outstanding an opinion
                          of counsel satisfactory to the Required Holders with
                          respect to the due authorization and execution of the
                          related agreement of assumption and the
                          enforceability of such agreement against such
                          corporation or partnership, (III) immediately after
                          giving effect to such transaction, such corporation
                          or limited partnership (x) shall not have a
                          Consolidated Net Worth, determined in accordance with
                          GAAP applied on a basis consistent with the
                          consolidated financial statements of the Company most
                          recently delivered pursuant to Section 5A (or if no
                          such financials have yet been delivered under Section
                          5A, consistent with the consolidated financial
                          statements referred to in Section 8D), of less than
                          the Consolidated Net Worth of the Company immediately
                          prior to the effectiveness of such transaction,
                          satisfaction of this requirement to be set forth in
                          reasonable detail in an Officers' Certificate
                          delivered to each holder of





                                     - 34 -
<PAGE>   40
                          a Note at the time of such transaction, and (y) could
                          incur at least $1.00 of additional Indebtedness in
                          compliance with Section 6A and clause (xiii) of
                          Section 6B, and (IV) no Default or Event of Default
                          shall exist and be continuing immediately before or
                          after giving effect to such transaction; or

                          (ii)    sell, lease, abandon or otherwise dispose of
                 all or substantially all its assets, except that:

                                  (a)      any Subsidiary of the Company may
                          sell, lease or otherwise dispose of all or
                          substantially all its assets to the Company or to a
                          Wholly-Owned Subsidiary of the Company; and

                                  (b)      the Company may sell, lease or
                          otherwise dispose of all or substantially all its
                          assets to any corporation or limited partnership into
                          which the Company could be consolidated or merged in
                          compliance with clause (i)(c) of this Section 6G,
                          provided that each of the conditions set forth in
                          such clause (i)(c) shall have been fulfilled; or

                          (iii)   sell, lease, convey, abandon or otherwise
                 dispose of (including, without limitation, in connection with
                 a Sale and Lease-Back Transaction) any of its assets (except
                 in a transaction permitted by clause (i)(a), (i)(b), (i)(c),
                 (ii)(a) or (ii)(b) of this Section 6G or sales of inventory in
                 the ordinary course of business consistent with past practice)
                 or issue or sell Capital Stock of any Subsidiary of the
                 Company, whether in a single transaction or a series of
                 related transactions (each of the foregoing non-excepted
                 transactions, an "ASSET SALE"), unless:

                                  (a)      immediately after giving effect to
                          such proposed disposition no Default or Event of
                          Default shall exist and be continuing, satisfaction
                          of this requirement to be set forth in reasonable
                          defail in an Officer's Certificate delivered to each
                          holder of a Note at the time of such transaction in
                          the case of any Asset Sale involving assets that
                          generate EBITDA and such Asset Sale involves
                          consideration of $250,000 or more;

                                  (b)      such sale or other disposition is
                          for cash consideration or for consideration
                          consisting of not less than 75% cash and not more
                          than 25% interest-bearing promissory notes; provided,
                          that the 75% limitation referred to in this clause
                          (b) shall not apply to any Asset Sale consisting
                          solely of a sale or other disposition of land and





                                     - 35 -
<PAGE>   41
                          buildings for an interest bearing promissory note as
                          long as the amount of such promissory note does not
                          exceed $250,000;

                                  (c)      one of the following two conditions
                          must be satisfied:

                                        (I)     (x) the aggregate Net Proceeds
                          of all assets so disposed of (whether or not leased
                          back) over the immediately preceding 12-month period
                          does not exceed $3,000,000 and (y) the aggregate Net
                          Proceeds of all assets so disposed of (whether or not
                          leased back) from the Closing Date through the date
                          of such disposition does not exceed $10,000,000; or

                                        (II)    in the event that such Net
                          Proceeds (less the amount thereof previously applied
                          in accordance with clause (x) of this clause (c)(II))
                          exceeds the limitations determined pursuant to
                          clauses (x) and (y) of clause (c)(I) of this Section
                          6G (such excess amount being herein called "EXCESS
                          SALE PROCEEDS"), the Company shall within 12 calendar
                          months of the date on which such Net Proceeds
                          exceeded any such limitation, cause an amount equal
                          to such Excess Sale Proceeds to be applied (x) to the
                          acquisition of assets in replacement of the assets so
                          disposed of or of assets which may be productively
                          used in the United States of America or Canada in the
                          conduct of the Business, or (y) to the extent not
                          applied pursuant to the immediately preceding clause
                          (x), to offer to make prepayments on the Notes
                          pursuant to Section 4C hereto and, allocated on the
                          basis specified for such prepayments in the
                          definition of Allocable Proceeds, to offer to repay
                          other Parity Debt (other than Indebtedness under
                          Section 6B(ii) or that by its terms does not permit
                          such offer to be made); and

                                  (d)      the Company shall have delivered to
                          the Noteholders a Certificate of the Board of
                          Directors of the General Partner, certifying that
                          such sale or other disposition is for fair value and
                          is in the best interests of the Company.

Notwithstanding the foregoing, Asset Sales shall not be deemed to include (1)
any transfer of assets or issuance or sale of Capital Stock by the Company or
any of its Subsidiaries to the Company or a Wholly-Owned Subsidiary of the
Company, (2) any transfer of assets or issuance or sale of Capital Stock by the
Company or any of its Subsidiaries to any Person in exchange for, or the Net
Proceeds of which are applied within 12 months to the purchase of, other assets
used in a line of business permitted under Section 6H and having a fair market
value (as determined in good faith by the





                                     - 36 -
<PAGE>   42
Board of Directors of the General Partner) not less than that of the assets so
transferred or Capital Stock so issued or sold and (3) any transfer of assets
pursuant to an Investment permitted by Section 6E.

         6H.     BUSINESS.  The Company will not and will not permit any of its
Subsidiaries  to engage in any line of business if as a result thereof the
Company and its  Subsidiaries would not be principally and predominately
engaged in the Business and related general and administrative operations, as
more fully described in the Memorandum and subject in all respects to the
provisions of clause (iii) of the proviso to Section 6E(v).

         6I.     TRANSACTIONS WITH AFFILIATES.     The Company will not, and
will not permit any of its Subsidiaries to, directly or indirectly, engage in
any transaction with any Affiliate unless (i) (a) such transaction is on fair
and reasonable terms that are no less favorable to the Company or such
Subsidiary, as the case may be, than those which would be obtained in an
arm's-length transaction from a Person other than an Affiliate and (b) (x) such
transaction is entered into in the ordinary course of business and pursuant to
the reasonable requirements at the time of the Company's or such  Subsidiary's
operations, or (y) such transaction involves the acquisition by the Company
from the General Partner of assets formerly owned by an entity, the Capital
Stock of which was purchased by the General Partner, which acquisition is for a
substantially equivalent value as the value of such purchase and is consummated
within ten days after the consummation of such purchase, as long as such
transaction otherwise would be permitted hereunder had the Company acquired
such assets directly from such entity (including, for example, the acquisition
by the Company from the General Partner of assets formerly owned by Kingston
Propane, Inc.), (ii) such transaction is in connection with the incurrence of
Indebtedness pursuant to Section 6B(viii), (iii) such transaction is in
connection with the making of an Investment pursuant to Section 6E(i), (iv)
such transaction is a Restricted Payment permitted by Section 6F, (v) such
transaction involves performance under the Contribution Agreement
(substantially in the form in effect on the Closing Date), (vi) such
transaction involves indemnification and contribution under Section 7.7 of the
Partnership Agreement (as said section is in effect on the Closing Date), to
the extent such indemnification or contribution arises from operations or
activities in connection with the Business (including securities issuances in
connection with funding the Business) or (vii) such transaction is a specific
transaction described in the Registration Statement.

         6J.     SUBSIDIARY STOCK AND INDEBTEDNESS.

                 (i)      The Company will not permit any of its Subsidiaries
directly or indirectly to issue or sell any Equity Interest of such Subsidiary
of the Company to any Person other than the Company or a Wholly-Owned
Subsidiary of the Company except (a) for the purpose of qualifying directors or
(b) in satisfaction of pre-emptive rights of





                                     - 37 -
<PAGE>   43
holders of minority interests which are triggered by an issuance of Equity
Interests to the Company or a  Subsidiary of the Company and permit such
holders to maintain their pro rata interests.

                 (ii)     The Company will not directly or indirectly sell,
assign, pledge or otherwise dispose of any Equity Interest in or any
Indebtedness of any of its Subsidiaries, and will not permit any of its
Subsidiaries directly or indirectly to sell, assign, pledge or otherwise
dispose of any Equity Interest in or any Indebtedness of any other Subsidiary
of the Company except to the Company or a Wholly-Owned  Subsidiary of the
Company, unless (a) simultaneously with such sale, transfer or disposition, all
of the Equity Interests (other than an Equity Interest representing less than
2% of the outstanding Equity Interests of all classes of such Subsidiary taken
together, provided that such Equity Interest is considered an Investment
pursuant to Section 6E(v) and is permitted thereunder) or Indebtedness of such
Subsidiary owned by the Company and its Subsidiaries is sold, transferred or
disposed of as an entirety, (b) the Board of Directors of the General Partner
shall have determined, as evidenced by a resolution thereof, that the proposed
sale, transfer or disposition of such Equity Interests or Indebtedness is in
the best interests of the Company, (c) such Equity Interests or Indebtedness
are sold, transferred or otherwise disposed of for cash or Cash Equivalents or
other assets used in a line of business permitted by Section 6H and having a
fair market value (as determined in good faith by the Board of Directors of the
General Partner) not less than that of the Equity Interests or Indebtedness so
transferred, to a Person upon terms deemed by the Board of Directors of the
General Partner to be acceptable, (d) the Subsidiary being sold, transferred or
otherwise disposed of shall not have any continuing investment in the Company
or any Subsidiary of the Company not being so sold, transferred or disposed and
(e) such sale, transfer or disposition is permitted by Section 6G.

         6K.     PAYMENT OF DIVIDENDS BY SUBSIDIARIES.  The Company will
not, and will not permit any of its Subsidiaries to, be subject to or enter
into any agreement which restricts the ability of any Subsidiary of the Company
to declare or pay any dividend to the Company, to make any distribution on any
Equity Interest of such  Subsidiary to the Company, or to lend money to the
Company.

         6L.     SALES OF RECEIVABLES.  The Company will not, and will not
permit any of its Subsidiaries to, discount, pledge, sell (with or without
recourse), or otherwise sell for less than face value thereof any of its
accounts or notes receivable, except for sales of receivables (i) without
recourse which are seriously past due and which have been substantially written
off as uncollectible or collectible only after extended delays, or (ii) made in
connection with the sale of a business but only with respect to the receivables
directly generated by the business so sold.





                                     - 38 -
<PAGE>   44
         6M.     MATERIAL AGREEMENTS; TAX STATUS.

         The Company will not:

                 (i)      amend or directly or indirectly modify in any manner
         the definitions of "Lenders' Portion" or "Designated Net Proceeds" of
         the Credit Agreement or any similar provisions of any agreement
         applicable to any extensions, renewals or refundings thereof as Parity
         Debt under the provisions of paragraph 6B(ii) or 6B(iii);

                 (ii)     amend or modify in any manner adverse to the holders
         of the Notes, or grant any waiver or release under (if such action
         shall be adverse to the holders of the Notes), any Partnership
         Document, any notes evidencing Parity Debt or any agreement relating
         to Parity Debt or terminate in any manner any Partnership Document, it
         being understood, without limitation, that no modification that
         reduces principal, interest or fees, premiums, make-wholes or penalty
         charges, or extends any scheduled or mandatory payment, prepayment or
         redemption of principal or interest, or makes less restrictive any
         agreement or releases away any security, or waives any condition
         precedent or default shall be adverse to the holders of the Notes for
         purposes of this Agreement; or

                 (iii)    permit the Master Partnership or the Company to be
         treated as an association taxable as a corporation or otherwise to be
         taxed as an entity for federal income tax purposes.

         7.      EVENTS OF DEFAULT.

         7A.     ACCELERATION.  If any of the following conditions or events
("EVENTS OF DEFAULT") shall occur and be continuing for any reason whatsoever
(and whether such occurrence shall be voluntary or involuntary or come about or
be effected by operation of law or otherwise):

                 (i)      the Company defaults in the payment of any principal
         of, or Premium, if any, on any Note when the same becomes due and
         payable, either by the terms thereof or otherwise as herein provided;
         or

                 (ii)     the Company defaults in the payment of any interest
         on any Note for more than 5 days after the same becomes due and
         payable; or

                 (iii)    the Company or any Subsidiary of the Company (whether
         as primary obligor or as guarantor or other surety) defaults in any
         payment of principal of or interest on any Parity Debt or any other
         Indebtedness other than the Notes (including without limitation any
         Capitalized Lease Obligation, any obligation





                                     - 39 -
<PAGE>   45
         under a conditional sale or other title retention agreement, any
         obligation issued or assumed as full or partial payment for property
         whether or not secured by a purchase money mortgage or any obligation
         under notes payable or drafts accepted representing extensions of
         credit), beyond any period of grace provided with respect thereto, or
         the Company or any Subsidiary of the Company fails to perform or
         observe any other agreement or term or condition contained in any
         agreement under which any such obligation is created (or if any other
         event thereunder or under any such agreement shall occur and be
         continuing) and the effect of such failure or other event is to cause,
         or to permit the holder or holders of such Indebtedness (or a trustee
         on behalf of such holder or holders) to cause, such obligation to
         become due or to be repurchased prior to any stated maturity, provided
         that the aggregate amount of all Indebtedness as to which such a
         default (payment or other) shall occur and be continuing or such a
         failure or other event causing or permitting acceleration (or resale
         to the Company or any Subsidiary of the Company) shall occur and be
         continuing exceeds $2,000,000; provided, further, that no waiver,
         modification or amendment relating to any such a default (payment or
         other) or such a failure or other event with respect to any Parity
         Debt or agreement or instrument relating to any Parity Debt shall be
         effective for purposes of this clause (iii) if any consideration
         (other than the payment of reasonable attorney's fees) is given,
         directly or indirectly, by the Company or any of its Subsidiaries or
         Affiliates in respect thereof, unless substantially the same
         consideration is given to the holders of the Notes; or

                 (iv)     any representation or warranty made in any writing by
         or on behalf of the Company, Heritage or the Operating Partnership in
         this Agreement, any other Financing Document or any instrument
         furnished pursuant to this Agreement or any Financing Document shall
         prove to have been false or incorrect in any material respect on the
         date as of which made; or

                 (v)      the Company fails to perform, observe or comply with
         any agreement contained in Section 6; or

                 (vi)     the Company fails to perform or observe any other
         agreement, term or condition contained in this Agreement or the other
         Financing Documents and such failure shall not be remedied within 30
         days after any Responsible Officer obtains actual knowledge or notice
         thereof; or

                 (vii)    the General Partner, the Company or any Significant
         Subsidiary Group makes an assignment for the benefit of creditors or
         is generally not paying its debts as such debts become due; or





                                     - 40 -
<PAGE>   46
                 (viii)   any decree or order for relief in respect of the
         General Partner, the Company or any Significant Subsidiary Group is
         entered under any bankruptcy, reorganization, compromise, arrangement,
         insolvency, readjustment of debt, dissolution or liquidation or
         similar law, whether now or hereafter in effect (herein called the
         "BANKRUPTCY LAW"), of any jurisdiction; or

                 (ix)     the General Partner, the Company or any Significant
         Subsidiary Group petitions or applies to any tribunal for, or consents
         to, the appointment of, or taking possession by, a trustee, receiver,
         custodian, liquidator or similar official of the General Partner, the
         Company or any Significant Subsidiary Group , or of any substantial
         part of the assets of the General Partner, the Company or any
         Significant Subsidiary Group, or commences a voluntary case under the
         Bankruptcy Law of the United States or any proceedings (other than
         proceedings for the voluntary liquidation and dissolution of the
         General Partner, the Company or any Significant Subsidiary Group)
         relating to the General Partner, the Company or any Significant
         Subsidiary Group under the Bankruptcy Law of any other jurisdiction;
         or

                 (x)      any such petition or application is filed, or any
         such proceedings are commenced, against the General Partner, the
         Company or any Significant Subsidiary Group and the General Partner,
         the Company or any Significant Subsidiary Group by any act indicates
         its approval thereof, consents thereto or acquiescences therein, or an
         order, judgment or decree is entered appointing any such trustee,
         receiver, custodian, liquidator or similar official, or approving the
         petition in any such proceedings, and such order, judgment or decree
         remains unstayed and in effect for more than 30 days; or

                 (xi)     a judgment or judgments for the payment of money in
         excess of $2,000,000 in the aggregate (except to the extent covered by
         insurance as to which the insurer has acknowledged in writing its
         obligation to cover in full) shall be rendered against the Company or
         any Subsidiary of the Company and either (i) enforcement proceedings
         have been commenced by any creditor upon such judgment or order or
         (ii) within 45 days after entry thereof, such judgment is not
         discharged or execution thereof stayed pending appeal, or within 45
         days after the expiration of any such stay, such judgment is not
         discharged; or

                 (xii)    any order, judgment or decree is entered in any
         proceedings against the General Partner, the Company or any
         Significant Subsidiary Group decreeing the dissolution of the General
         Partner, the Company or any Significant Subsidiary Group and such
         order, judgment or decree remains unstayed and in effect for more than
         30 days or any other event occurs that results in the termination,
         dissolution





                                     - 41 -
<PAGE>   47
         or winding up of the Company, subject to Section 6G, the General
         Partner or any Significant Subsidiary Group; or

                 (xiii)   any order, judgment or decree is entered in any
         proceedings against the Company or any of its Subsidiaries decreeing a
         split-up of the Company or such Subsidiary which requires the
         divestiture of assets representing a substantial part, or the
         divestiture of the stock of a Subsidiary of the Company whose assets
         represent a substantial part of the consolidated assets of the Company
         and its Subsidiaries (determined in accordance with GAAP) or which
         requires the divestiture of assets, or stock of a Subsidiary of the
         Company, which shall have contributed a substantial part of the
         Consolidated Net Income of the Company and its Subsidiaries for any of
         the three fiscal years then most recently ended, and such order,
         judgment or decree shall not be dismissed or execution thereon stayed
         pending appeal or review within 45 days after entry thereof, or in the
         event of such a stay, such order, judgment or decree shall not be
         dismissed within 45 days after such stay expires; or

                 (xiv)    any of the Security Documents shall at any time, for
         any reason cease to be in full force and effect or shall fail to
         constitute a valid, perfected first priority Lien with respect to the
         Collateral, subject to Liens permitted by the Security Agreement, or
         shall be declared to be null and void in whole or in any material
         respect (i.e., relating to the validity or priority of the Liens
         created by the Security Documents or the remedies available
         thereunder) by the judgment of any court or other Governmental
         Authority having jurisdiction in respect thereof, or if the validity
         or the enforceability of any of the Security Documents shall be
         contested by or on behalf of the Company, or the Company shall
         renounce any of the Security Documents, or deny that it is bound by
         the terms of any of the Security Documents; or

                 (xv)     (a)  the General Partner shall be engaged in any
         business or activities other than those permitted by the Partnership
         Agreement as in effect on the Closing Date, or (b) Heritage ceases to
         be the sole general partner of the Company or the Master Partnership,
         or (c) Current Management shall own, directly or indirectly, less than
         51% of the Capital Stock of the General Partner; or

                 (xvi)    an ERISA Event shall have occurred that, when taken
         together with all other such ERISA Events that have occurred, could
         reasonably be expected to result in liability of the Company and its
         ERISA Affiliates in an aggregate amount exceeding $2,000,000; or

                 (xvii)   an event of default under any of the Security
         Documents has occurred and is continuing





                                     - 42 -
<PAGE>   48
         then (a) if such event is an Event of Default specified in clause (i)
         or (ii) of this Section 7A, the holder of any Note (other than the
         Company or any of its Subsidiaries or Affiliates) may at its option,
         by notice in writing to the Company, declare such Note to be, and such
         Note shall thereupon be and become, immediately due and payable
         together with interest accrued thereon and together with the
         Yield-Maintenance Amount, if any, with respect to such Note, without
         presentment, demand, protest or other notice of any kind, all of which
         are hereby waived by the Company, (b) if such event is an Event of
         Default specified in clause (viii), (ix) or (x) of this Section 7A
         with respect to the Company, all of the Notes at the time outstanding
         shall automatically become immediately due and payable together with
         interest accrued thereon and together with the Yield-Maintenance
         Amount, if any, with respect to each such Note, without presentment
         demand, protest or notice of any kind, all of which are hereby waived
         by the Company, and (c) if such event is not an Event of Default
         specified in clause (i), (ii), (viii), (ix) or (x) of this Section 7A
         with respect to the Company, the Required Holder(s) may at its or
         their option, by notice in writing to the Company, declare all of the
         Notes to be, and all of the Notes shall thereupon be and become,
         immediately due and payable together with interest accrued thereon and
         together with the Yield-Maintenance Amount, if any, with respect to
         each Note, without presentment, demand, protest or other notice of any
         kind, all of which are hereby waived by the Company.

         The Company acknowledges, and the parties hereto agree, that each
holder of a Note has the right to maintain its investment in the Notes free
from repayment by the Company (except as herein specifically provided for) and
that the provision for payment of the Yield-Maintenance Amount by the Company
in the event that the Notes are prepaid or are accelerated as a result of an
Event of Default is intended to provide prepaid compensation for the
deprivation of such right under such circumstances.

         7B.     RESCISSION OF ACCELERATION.  At any time after any or all of
the Notes shall have been declared immediately due and payable pursuant to
Section 7A, the Required Holder(s) may, by notice in writing to the Company,
rescind and annul such declaration and its consequences if (i) the Company
shall have paid all overdue interest on the Notes, the principal of and
Premium, if any, payable with respect to any Notes which have become due
otherwise than by reason of such declaration, and interest on such overdue
interest and overdue principal and Premium at the rate specified in the Notes,
(ii) the Company shall not have paid any amounts which have become due solely
by reason of such declaration, (iii) all Events of Default and Defaults, other
than non-payment of amounts which have become due solely by reason of such
declaration, shall have been cured or waived pursuant to Section 11C, and (iv)
no judgment or decree shall have been entered for the payment of any amounts
due pursuant to the Notes or this Agreement.  No such rescission or annulment
shall extend to or affect any subsequent Event of Default or Default or impair
any right arising therefrom.





                                     - 43 -
<PAGE>   49
         7C.     NOTICE OF ACCELERATION OR RESCISSION.  Whenever any Note shall
be declared immediately due and payable pursuant to Section 7A or any such
declaration shall be rescinded and annulled pursuant to Section 7B, the Company
shall forthwith give written notice thereof to the holder of each Note at the
time outstanding.

         7D.     OTHER REMEDIES.  If any Event of Default or Default shall
occur and be continuing, the holder of any Note may proceed to protect and
enforce its rights under this Agreement and such Note by exercising such
remedies as are available to such holder in respect thereof under applicable
law, either by suit in equity or by action at law, or both, whether for
specific performance of any covenant or other agreement contained in this
Agreement or in aid of the exercise of any power granted in this Agreement.  No
remedy conferred in this Agreement upon the holder of any Note is intended to
be exclusive of any other remedy, and each and every such remedy shall be
cumulative and shall be in addition to every other remedy conferred herein or
now or hereafter existing at law or in equity or by statute or otherwise.

         8.      REPRESENTATIONS, COVENANTS AND WARRANTIES.  Each of Heritage
and the Company represents, covenants and warrants as follows:

         8A.     ORGANIZATION.  Heritage is a corporation, duly organized,
validly existing and in good standing under the laws of the State of Delaware
and has all requisite corporate power and authority to own and operate its
properties (including without limitation the assets owned and operated by it
after giving effect to the Transactions), to conduct its business, to enter
into this Agreement, the other Financing Documents to which it is a party and
the Operative Agreements, to issue and sell the Notes and to carry out the
terms of this Agreement, the Notes, and such other Financing Documents and the
Operative Agreements.  The Operating Partnership is a limited partnership duly
organized, validly existing and in good standing under the laws of the State of
Delaware and has all requisite partnership power and authority to own and
operate its properties (including without limitation the assets owned and
operated by it after giving effect to the Transactions), to conduct its
business, to enter into this Agreement and the other Financing Documents to
which it is a party and the Operative Agreements, to assume all of Heritage's
obligations under the Notes and to carry out the terms of this Agreement, the
Notes, such other Financing Documents and Operative Agreements.  Each
Subsidiary of the Company is duly organized, validly existing and in good
standing under the laws of its state of organization and has all requisite
power and authority to own and operate its properties (including without
limitation the assets owned and operated by it).

         8B.     PARTNERSHIP INTERESTS.  The sole general partner of the
Operating Partnership is Heritage, which upon the Closing will own a 1.0101%
general partner interest in the Operating Partnership.  Upon the Closing (a)
the only limited partner of the Operating Partnership will be the Master
Partnership, which will own a 98.9899% limited





                                     - 44 -
<PAGE>   50
partner interest in the Operating Partnership as provided in the Registration
Statement, and (b) the Operating Partnership will not have any partners other
than Heritage and the Master Partnership.  The Operating Partnership does not
have, and immediately after giving effect to the Transactions will not have,
any Subsidiary other than the Subsidiaries of the Company as set forth on
Schedule 8B or any Investments in any Person (other than as set forth on
Schedule 6E or 8B or Investments of the types described in Section 6E(i), (ii),
(iii) or (vi)).

         8C.     QUALIFICATION.  Heritage is duly qualified or registered and
is in good standing as a foreign corporation for the transaction of business,
the Operating Partnership is duly qualified or registered and is in good
standing as a foreign limited partnership for the transaction of business, and
each of the Subsidiaries of the Company is duly qualified or registered and is
in good standing as a foreign corporation or partnership, as the case may be,
for the transaction of business, in the states and to the extent listed in
Schedule 8C, and, except as reflected on Schedule 8C, there are no other
jurisdictions in which the nature of their respective activities or the
character of the properties they own, lease or use makes such qualification or
registration necessary and in which the failure so to qualify or to be so
registered would have a Material Adverse Effect.  Heritage has taken all
necessary corporate action to authorize the execution, delivery and performance
by it of this Agreement, the Notes, the other Financing Documents to which it
is a party and the Operative Agreements.  The Operating Partnership has taken
all necessary partnership action to authorize the execution, delivery and
performance by it of this Agreement, the other Financing Documents to which it
is a party and the Operative Agreements, and to assume all of Heritage's
obligations under the Notes.  At or prior to the Closing, Heritage will have
duly executed and delivered each of this Agreement, the Notes, the other
Financing Documents to which it is a party and the Operative Agreements, and
each of such documents and instruments and the Notes and the Security Documents
will constitute the legal, valid and binding obligation of Heritage enforceable
against it in accordance with its terms, except as such enforceability may be
limited by bankruptcy, insolvency, moratorium or similar laws affecting
creditors' rights generally and general principles of equity (regardless of
whether such enforceability is considered in a proceeding in equity or at law).
At or prior to the Closing, the Operating Partnership will have duly executed
and delivered each of this Agreement, the other Financing Documents and the
Operative Agreements to which it is a party, and each of such documents and
agreements and the Notes and the Security Documents will constitute the legal,
valid and binding obligation of the Operating Partnership enforceable against
it in accordance with its terms, except as such enforceability may be limited
by bankruptcy, insolvency, moratorium or similar laws affecting creditors'
rights generally and general principles of equity (regardless of whether such
enforceability is considered in a proceeding in equity or at law).





                                     - 45 -
<PAGE>   51
         8D.     BUSINESS; FINANCIAL STATEMENTS.

                 (i)      Heritage has delivered to you complete and correct
copies of (a) the Registration Statement and (b) the Memorandum.  The pro forma
condensed consolidated financial statements of the Master Partnership set forth
in the Registration Statement comply as to form in all material respects with
the applicable accounting requirements of the Securities Act and the published
rules and regulations thereunder and the assumptions on which the pro forma
adjustments reflected in such pro forma condensed consolidated financial
statements are based provide a reasonable basis for presenting the significant
effects of the transactions contemplated by such pro forma condensed
consolidated financial statements and such pro forma adjustments give
appropriate effect to such assumptions and are properly applied in such pro
forma condensed consolidated financial statements.

                 (ii)     The Operating Partnership has not engaged in any
business or activities prior to the date of this Agreement, except for
activities related to its formation, organization and prospective operations,
and will not have any significant assets or liabilities prior to the completion
of the Transactions, except as contemplated by this Agreement.  Immediately
prior to the date of this Agreement each Subsidiary of the Company was engaged
in the business indicated on Schedule 8B.

                 (iii)    The Registration Statement contains complete and
correct copies of (a) the audited balance sheets of Heritage as of August 31,
1995 and August 31, 1994, and the related audited statements of operations and
cash flows for the fiscal years ended August 31, 1995, August 31, 1994 and
August 31, 1993 and (b) the unaudited condensed balance sheets of Heritage as
of February 29, 1996 and the related unaudited condensed statements of
operations and cash flows for the six months ended February 29, 1996 and
February 28, 1995.  Such financial statements (including any related schedules
and notes) are true and correct in all material respects (subject, as to
interim statements, to changes resulting from audits and year-end adjustments),
have been prepared in accordance with GAAP consistently followed throughout the
periods involved and show all liabilities, direct and contingent, of Heritage
required to be shown in accordance with such principles.  The balance sheets
fairly present the financial condition of Heritage as at the respective dates
thereof, and the results of operations and cash flows fairly present the
results of operations of Heritage and its consolidated cash flows for the
periods indicated.

                 (iv)     Heritage has delivered to you complete and correct
copies of the unaudited pro forma condensed consolidated balance sheet of the
Operating Partnership as of February 29, 1996 giving effect to the
Transactions.  Such balance sheet has been prepared in accordance with GAAP to
the extent applicable to such balance sheet and fairly presents in all material
respects the financial position of the Operating Partnership





                                     - 46 -
<PAGE>   52
on a pro forma basis immediately after the Transactions in accordance with the
assumptions disclosed therein at the date of such balance sheet.

                 (v)      Heritage has delivered to you true and correct copies
of the documents and other materials listed on Schedule 8D.

         8E.     ACTIONS PENDING.  There is no action, suit, investigation or
proceeding pending or, to the knowledge of Heritage or the Operating
Partnership, threatened against Heritage, Operating Partnership or any of the
Subsidiaries of the Company, or any properties or rights of Heritage, the
Operating Partnership or any of the Subsidiaries of the Company, by or before
any court, arbitrator or administrative or governmental body (i) which
questions the validity or enforceability of this Agreement, the Notes, any
other Financing Document or any Operative Agreement or any action to be taken
pursuant to this Agreement, the Notes, any other Financing Document or any
Operative Agreement or (ii) which could reasonably be expected to result in a
Material Adverse Effect.

         8F.     CHANGES.  Except as contemplated by this Agreement, the Notes,
the other Financing Documents or the Operative Agreements or as described in
the Registration Statement or the Memorandum, (i) none of Heritage, the
Operating Partnership or any of the Subsidiaries of the Company has incurred
any material liabilities or obligations, direct or contingent, nor entered into
any material transaction, in each case other than in the ordinary course of
business, and (ii) there has not been any material adverse change in or effect
on the business, assets, financial condition or prospects of Heritage or the
Operating Partnership or any of the Subsidiaries of the Company.  There has not
been, and on or prior to the Closing Date there will not be, any Restricted
Payment of any kind declared, paid or made by Heritage or the Operating
Partnership except as specifically described in the Registration Statement.
There has not been, prior to the Transactions, any incurrence of Indebtedness
under the Acquisition Facility or the Revolving Working Capital Facility.

         8G.     OUTSTANDING INDEBTEDNESS.  Other than the Indebtedness
represented by the Notes, neither Heritage, the Operating Partnership nor any
of the Subsidiaries of the Company as set forth on Schedule 8B has outstanding
any Indebtedness except as set forth on Schedule 8G and any such Indebtedness
which is indicated in Schedule 8G to be paid in full on the Closing Date will
be paid in full at the time of Closing.  There exists no default under the
provisions of any instrument evidencing such Indebtedness or of any agreement
relating thereto.  Immediately after giving effect to the Transactions, no
instrument or agreement to which the Operating Partnership or any of the
Subsidiaries of the Company is a party or by which the Operating Partnership,
any such Subsidiary, or their respective properties is bound (other than this
Agreement and the Credit Agreement and other than as indicated in Schedule 8G)
will contain any restriction on the incurrence





                                     - 47 -
<PAGE>   53
by the Operating Partnership or any of the Subsidiaries of the Company of
additional Indebtedness.

         8H.     TRANSFER OF ASSETS AND BUSINESS; TITLE TO PROPERTIES.

                 (i)      Except as set forth on Schedule 8H, each of Heritage,
the Operating Partnership and the Subsidiaries of the Company will at the
Closing, after giving effect to the Transactions, be in possession of, and
operating in compliance with, all franchises, grants, authorizations,
approvals, licenses, permits, easements, rights- of-way, consents, certificates
and orders (collectively, the "PERMITS") required (a) to own, lease or use its
properties (including without limitation to own, lease or use the Assets owned,
leased or used by it) and (b) considering all such Permits in the possession
of, and complied with by, the Operating Partnership and its Subsidiaries taken
together, to permit the conduct of the Business as now conducted and proposed
to be conducted, except for those Permits (x) which are routine and
administrative in nature and are expected in the reasonable judgment of the
Operating Partnership to be obtained or given in the ordinary course of
business after the Closing , and (y) which, if not obtained or given, would
not, individually or in the aggregate, present a reasonable likelihood of
having a Material Adverse Effect,

                 (ii)     Except as set forth on Schedule 8H, on the date
hereof, Heritage has, and on the Closing Date and after giving effect to the
Transactions, the Operating Partnership and the Subsidiaries of the Company
will have, (i) good and marketable title to, or valid leasehold interests in,
all of the Assets constituting real property except for defects in, or lack of
recorded title and exceptions to leasehold interests that either alone or in
the aggregate could not reasonably be expected to result in a Material Adverse
Effect, and (ii) good and sufficient title to, or valid rights to use, all of
the Assets constituting personal property reasonably necessary for the
operation of such personal property as it is used on the date hereof and
proposed to be used in the Business, in each case subject to no Liens except
such as are permitted by Section 6C and Liens, if any, which will be discharged
at the Closing.  The Assets owned by the Operating Partnership and the
Subsidiaries of the Company after giving effect to the Transactions will be all
of the assets and properties reasonably necessary to enable the Operating
Partnership and its Subsidiaries to conduct the Business after the Transactions
as described in the Registration Statement and the Memorandum.  Subject to such
exceptions as would not, individually or in the aggregate, present a reasonable
likelihood of having a Material Adverse Effect (A) on the date hereof Heritage
and its Subsidiaries enjoy, and upon the completion of the Transactions the
Operating Partnership and the Subsidiaries of the Company will enjoy, peaceful
and undisturbed possession under all leases and subleases necessary in any
material respect for the conduct of the Business, and (B) all such leases and
subleases are valid and subsisting and are in full force and effect.  None of
the properties or assets of Heritage, the Operating Partnership or any of the
Subsidiaries of





                                     - 48 -
<PAGE>   54
the Company is subject to any Lien other than Liens that would be permitted to
be imposed pursuant to Section 6C as of the Closing Date, immediately after
giving effect to the Transactions.

                 (iii)    Except as set forth on Schedule 8H, upon the
completion of the Closing, Heritage will have transferred to the Operating
Partnership record and beneficial ownership of properties, easements and
licenses comprising all of the Assets previously owned or operated by it
(including the assets of any entity consolidating with or merging into
Heritage).

                 (iv)     Except as set forth on Schedule 8H, on the Closing
Date and immediately after giving effect to the Transactions, the Assets will
constitute all of the Collateral.

         8I.     TAXES.  On the Closing Date and after giving effect to the
Transactions, each of the Operating Partnership and its Subsidiaries will have
filed all federal, state and other income tax returns which, to the knowledge
of the Operating Partnership, are required to be filed or will have properly
filed for extensions of time for the filing thereof, and has paid all taxes,
assessments and other governmental charges levied upon it or any of its
properties, assets, income or franchises as shown to be due on such returns,
except those which are not past due or are being contested in good faith in
compliance with Section 5F.  The Operating Partnership is a limited partnership
not subject to taxation with respect to its income or gross receipts under
applicable state laws and is treated as a pass-through entity for U.S. federal
income tax purposes.

         8J.     COMPLIANCE WITH OTHER INSTRUMENTS, ETC.; SOLVENCY.

                 (i)      On the Closing Date, immediately prior to the
completion of any of the transactions contemplated by the Registration
Statement (including without limitation the transactions contemplated by this
Agreement, the Notes, the other Financing Documents and the Operative
Agreements), neither Heritage, the Operating Partnership nor any of the
Subsidiaries of the Company will be in violation of (a) any provision of its
certificate or articles of incorporation or other constitutive documents or its
by-laws, (b) any provision of any agreement or instrument to which it is a
party or by which any of its properties is bound or (c) any applicable law,
ordinance, rule or regulation of any Governmental Authority or any applicable
order, judgment or decree of any court, arbitrator or Governmental Authority
except (in the case of clauses (b) and (c) above only) for such violations
which would not, individually or in the aggregate, present a reasonable
likelihood of having a Material Adverse Effect.

                 (ii)     The execution, delivery and performance of this
Agreement, the Notes, the other Financing Documents and the Operative
Agreements, and the completion





                                     - 49 -
<PAGE>   55
of the transactions contemplated by the Registration Statement to occur prior
to or at the time of the Closing (including without limitation the transactions
contemplated by this Agreement, the Notes, the other Financing Documents and
the Operative Agreements) will not violate (a) any provision of the certificate
or articles of incorporation or other constitutive documents or by-laws of
Heritage, the Operating Partnership or any of the Subsidiaries of the Company,
(b) any applicable law, ordinance, rule or regulation of any Governmental
Authority or any applicable order, judgment or decree of any court, arbitrator
or Governmental Authority, or (c) any provision of any agreement or instrument
to which Heritage, the Operating Partnership or any of the Subsidiaries of the
Company is a party or by which any of its properties is bound.

                 (iii)    Upon giving effect to the issuance of the Notes on
the Closing Date both before and after giving effect to the assumption of the
Notes by the Operating Partnership, no Note shall be "in default", as that term
is used in section 1405(a)(2) of the New York Insurance Law.  Each of Heritage
and the Operating Partnership is, and upon giving effect to the issuance by
Heritage, and the assumption by the Operating Partnership, of the Notes on the
Closing Date, will be, a "solvent institution", as that term is used in section
1405 of the New York Insurance Law, whose "obligations are not in default as to
principal or interest", as those terms are used in said section 1405(c).

                 (iv)     Upon completion of the transactions contemplated by
the Registration Statement to occur prior to or at the time of Closing
(including, without limitation, the transactions contemplated by this
Agreement, the Notes, the other Financing Documents and the Operative
Agreements), none of Heritage, the Operating Partnership or any Subsidiary of
the Company shall (a) be insolvent, (b) be engaged or about to engage in
business or a transaction at a time Heritage, the Operating Partnership or any
Subsidiary of the Company could be viewed as having unreasonably small capital,
or (c) intend to incur, or believe that it would incur, debts that would be
beyond its ability to pay as such debts matured.

         8K.     GOVERNMENTAL CONSENT.  No consent, approval or authorization
of, or declaration or filing with, any Governmental Authority is required for
the valid execution, delivery and performance of this Agreement, the Notes, the
other Financing Documents or the Operative Agreements, or for the valid offer,
issue, sale, delivery and performance of the Notes pursuant to this Agreement.

         8L.     OFFERING OF NOTES.  Neither Heritage, the Operating
Partnership nor any of their respective Affiliates nor any agent acting on
behalf of any of the foregoing has, directly or indirectly, offered the Notes
or any part thereof or any similar security of Heritage or the Operating
Partnership for sale to, or solicited any offers to buy any of the same from,
or otherwise approached or negotiated with respect thereto with, any Person
other than the Purchasers and not more than [85] other institutional investors,
and neither





                                     - 50 -
<PAGE>   56
Heritage, the Operating Partnership nor anyone acting on their respective
behalfs has taken or will take any action which would subject the issuance or
sale of the Notes to the provisions of section 5 of the Securities Act or to
the provisions of any securities or "blue sky" laws of any applicable
jurisdiction.

         8M.     USE OF PROCEEDS.  The net proceeds from the sale of the Units
by the Partnership will be used as contemplated by the Registration Statement,
including the final form of prospectus filed under Rule 424(b)(1) of the
Securities Act.  The net proceeds of the sale of the Notes will be used to
repay a portion of the pre-existing Indebtedness of Heritage assumed by the
Operating Partnership and to repurchase equity interests of the stockholders of
Heritage (the "EQUITY REPURCHASE"), all as contemplated by the Registration
Statement, including such final form of prospectus.  None of such proceeds will
be used, directly or indirectly, for the purpose, whether immediate, incidental
or ultimate, of purchasing or carrying any margin stock (as defined in Section
8R hereof) or for the purpose of maintaining, reducing or retiring any
Indebtedness which was originally incurred to purchase or carry any stock that
is currently a margin stock or for any other purpose which might constitute
this transaction a "purpose credit" within the meaning of such Regulation G.
Neither Heritage nor the Operating Partnership nor anyone acting on their
respective behalfs has taken or will take any action which might cause this
Agreement or the Notes to violate Regulation G, Regulation T or any other
regulation of the Board of Governors of the Federal Reserve System or to
violate the Exchange Act, in each case as in effect now or as the same may
hereafter be in effect.

         8N.     ERISA.  Each of Heritage and the Operating Partnership and
their respective ERISA Affiliates is in compliance in all material respects
with the applicable provisions of ERISA and the Code and the regulations and
published interpretations thereunder.  No ERISA Event has occurred or is
reasonably expected to occur that, when taken together with all other such
ERISA Events, could reasonably be expected to result in a Material Adverse
Effect.  The present value of all benefit liabilities under each Plan (based on
those assumptions used for purposes of Statement of Financial Accounting
Standards No. 87) did not, as of the last annual valuation date applicable
thereto, exceed by more than $2,000,000 the fair market value of the assets of
such Plan, and the present value of all benefit liabilities of all underfunded
Plans (based on those assumptions used for purposes of Statement of Financial
Accounting Standards No.  87) did not, as of the last annual valuation dates
applicable thereto, exceed by more than $2,000,000 the fair market value of the
assets of all such underfunded Plans.

         8O.     ENVIRONMENTAL COMPLIANCE.

         (i)     Except where the failure to be in compliance could not present
a reasonable likelihood of having a Material Adverse Effect, as of the date
hereof Heritage is, and immediately after giving effect to the Transactions,
the Operating Partnership and each





                                     - 51 -
<PAGE>   57
Subsidiary of the Company will be, in compliance with all Environmental Laws
applicable to it and to the Business or Assets.  Heritage has obtained and at
Closing the Operating Partnership and each Subsidiary of the Company will be in
compliance with all franchises, grants, authorizations, permits, licenses, and
approvals required under Environmental Laws, except for any non-compliance or
failure to obtain such Permits which could not reasonably be expected to have a
Material Adverse Effect.  Heritage has submitted timely and complete
applications to renew any expired or expiring Permits required pursuant to any
Environmental Law, except for any non-compliance or failure to obtain such
Permits which could not reasonably be expected to have a Material Adverse
Effect.  All reports, documents, or other submissions required by Environmental
Laws to be submitted by Heritage or the Operating Partnership to any
Governmental Authority or Person have been filed by Heritage and the Operating
Partnership, except where the failure to do so would not present a reasonable
likelihood of having a Material Adverse Effect.

         (ii)  (a)        There is no Hazardous Substance present at any of the
real property currently owned or leased by Heritage, the Operating Partnership
or any of the Subsidiaries of the Company except to the extent that such
presence could not reasonably be expected to have a Material Adverse Effect,
and (b) to the knowledge of Heritage and the Operating Partnership, there was
no Hazardous Substance present at any of the real property formerly owned or
leased by Heritage during the period of ownership or leasing by such Person;
and with respect to such real property and subject to the same knowledge and
temporal qualifiers concerning Hazardous Substances with respect to formerly
owned or leased real properties, there has not occurred (x) any release, or to
the knowledge of Heritage and the Operating Partnership, any threatened release
of a Hazardous Substance, or (y) any discharge or, to the knowledge of Heritage
and the Operating Partnership, threatened discharge of any Hazardous Substance
into the ground, surface or navigable waters which discharge or threatened
discharge violates any federal, state, local or foreign laws, rules or
regulations concerning water pollution.

         (iii)   None of Heritage, the Operating Partnership or any of the
Subsidiaries of the Company has disposed of, transported, or arranged for the
transportation or disposal of any Hazardous Substance where such disposal,
transportation, or arrangement would give rise to liability pursuant to CERCLA
or any analogous state statute other than any such liabilities that could not
reasonably be expected to have a Material Adverse Effect.

         (iv)    As of the date hereof:  (a) no Lien has been asserted by any
Governmental Authority or person resulting from the use, spill, discharge,
removal, or remediation of any Hazardous Substance with respect to any real
property currently owned or leased by Heritage or the Operating Partnership,
and (b) to the knowledge of Heritage and the Operating Partnership, no such
Lien was asserted with respect to any of the real property





                                     - 52 -
<PAGE>   58
formerly owned or leased by Heritage during the period of ownership or leasing
of the real property by such Person.

         (v)  (a)  There are no underground storage tanks, asbestos-containing
materials, polychlorinated biphenyls, or urea formaldehyde insulation at any of
the real property currently owned or leased by Heritage or the Operating
Partnership in violation of any Environmental Law, and (b) to the knowledge of
Heritage and the Operating Partnership, there were no underground storage
tanks, asbestos-containing materials, polychlorinated biphenyls, or urea
formaldehyde insulation at any of the real property formerly owned or leased by
Heritage in violation of any Environmental Law during the period of ownership
or leasing of such real property by such Person.

         (vi)    As of the date hereof, any propane is stored, used and handled
by Heritage, the Operating Partnership and the Subsidiaries of the Company in
compliance with all applicable Environmental Laws except for any storage, use
or handling of propane that could not reasonably be expected to have a Material
Adverse Effect.

         8P.     PRE-EMPTIVE RIGHTS.  There are no pre-emptive rights to which
a holder of a minority interest in any Subsidiary of the Company is entitled.

         8Q.     DISCLOSURE.  This Agreement, the Notes, the other Financing
Documents, the Operative Agreements, the Memorandum and any other document,
certificate or statement furnished to any Purchaser by or on behalf of
Heritage, the Operating Partnership or their respective Subsidiaries or
Affiliates, in connection herewith, taken together, do not contain and the
Registration Statement does not contain any untrue statement of a material fact
or omit to state a material fact necessary in order to make the statements
contained herein and therein, in light of the circumstances under which they
were made, not misleading.  There is no fact known to Heritage or the Operating
Partnership which has or in the future could reasonably be expected to have (so
far as Heritage or the Operating Partnership can now foresee) a Material
Adverse Effect and which has not been set forth in this Agreement or in the
other documents, certificates and statements furnished to each Purchaser by or
on behalf of Heritage or the Operating Partnership (including the Registration
Statement) prior to the date hereof in connection with the transactions
contemplated hereby.

         8R.     FEDERAL RESERVE REGULATIONS.  None of Heritage, the Operating
Partnership, or any Subsidiary of the Company will, directly or indirectly, use
any of the proceeds of the sale of the Notes for the purpose, whether
immediate, incidental or ultimate, of buying a "margin stock" or of
maintaining, reducing or retiring any indebtedness originally incurred to
purchase a stock that is currently a "margin stock", or for any other purpose
which might constitute this transaction a "purpose credit" which is secured
"directly or indirectly by margin stock", in each case within the meaning of





                                     - 53 -
<PAGE>   59
Regulation G of the Board of Governors of the Federal Reserve System (12 C.F.R.
207, as amended), or otherwise take or permit to be taken any action which
would involve a violation of such Regulation G or of Regulation X (12 C.F.R.
224, as amended) or any other applicable regulation of such Board.  No
indebtedness being retired, directly or indirectly, out of the proceeds of the
sale of the Notes was incurred for the purpose of purchasing or carrying any
stock which is currently a "margin stock", and neither Heritage nor the
Operating Partnership owns or has any present intention of acquiring any amount
of such "margin stock".

         8S.     INVESTMENT COMPANY ACT.  None of Heritage, the Operating
Partnership or any Subsidiary of the Company is an "investment company", or a
company "controlled" by an "investment company", within the meaning of the
Investment Company Act of 1940, as amended.

         8T.     PUBLIC UTILITY HOLDING COMPANY ACT.  Each of Heritage, the
Operating Partnership and each Subsidiary of the Company is exempt from all of
the provisions of the Public Utility Holding Company Act of 1935, as amended
(the "PUHCA") and the rules thereunder other than Section 9(a)(2) thereof based
upon a no-action letter from the Commission dated June 19, 1996.

         8U.     MATTERS RELATING TO THE GENERAL PARTNER.  Immediately after
the Transactions, the ownership of Heritage and the Master Partnership shall
be, in all material respects, as described in the Registration Statement.
Heritage will own, in addition to the interest described in Section 8B, a 1%
general partner interest in the Master Partnership and 3,702,943 Subordinated
Units, representing a 47.0% limited partner interest in the Master Partnership
and the Operating Partnership on a combined basis, if no overallotment option
is exercised by the Underwriters or representing a 43.6% limited partnership
interest in the Master Partnership and the Operating Partnership on a combined
basis, if the overallotment option is exercised in full by the Underwriters.

         9.      REPRESENTATIONS OF EACH PURCHASER.  Each Purchaser severally
and not jointly represents as follows:

         9A.     NATURE OF PURCHASE.  Such Purchaser is not acquiring the Notes
to be purchased by it hereunder with a view to or for sale in connection with a
distribution of the Notes within the meaning of the Securities Act, provided
that the disposition of such Purchaser's property shall at all times be and
remain within its control.

         9B.     SOURCE OF FUNDS.  At least one of the following statements is
an accurate representation as to the source of funds (the "SOURCE") to be used
by such Purchaser to pay the purchase price of the Notes purchased by such
Purchaser hereunder:





                                     - 54 -
<PAGE>   60
                 (i)      the Source is a general account of an insurance
         company, and the amount of the reserves and liabilities (as defined by
         the annual statement for life insurance companies approved by the
         National Association of Insurance commissioners (the "NAIC ANNUAL
         STATEMENT")) for the general account contract(s) held by or on behalf
         of any employee benefit plans (as defined by Section 3(3) of ERISA)
         together with the amount of the reserves and liabilities (as defined
         by the NAIC Annual Statement) for the general account contract(s) held
         by or on behalf of any other such employee benefit plans maintained by
         the same employer (or affiliate thereof as defined in United States
         Department of Labor's Prohibited Transaction Class Exemption ("PTCE")
         95-60) or by the same employee organization do not exceed 10% of the
         total reserves and liabilities of such general account (exclusive of
         separate account liabilities) plus surplus as set forth in the NAIC
         Annual Statement filed with the state of domicile of the insurance
         company.  For purposes of the percentage limitation above, the amount
         of reserves and liabilities for the general account contract(s) held
         by or on behalf of an employee benefit plan shall be determined before
         reduction for credits on account of any reinsurance ceded on a
         coinsurance basis; or

                 (ii)     the Source is either (a) an insurance company pooled
         separate account, within the meaning of PTCE 90-1 (issued January 29,
         1990), or (b) a bank collective investment fund, within the meaning of
         PTCE 91-38 (issued July 12, 1991) and, except as disclosed on a list
         that has been provided by such Purchaser to the Company, no employee
         benefit plan or group of plans maintained by the same employer or
         employee organization participates to the extent of 10% or more of all
         assets allocated to such pooled separate account or collective
         investment fund; or

                 (iii)    the Source constitutes assets of an "investment fund"
         (within the meaning of Part V of PTCE 84- 14 (the "QPAM Exemption"))
         managed by a "qualified professional asset manager" or "QPAM" (within
         the meaning of Part V of the QPAM Exemption), no employee benefit
         plan's assets that are included in such investment fund, when combined
         with the assets of all other employee benefit plans established or
         maintained by the same employer or by an affiliate (within the meaning
         of Section V(c)(1) of the QPAM Exemption) of such employer or by the
         same employee organization and managed by such QPAM, exceed 20% of the
         total client assets managed by such QPAM, the conditions of Part I(c)
         and (g) of the QPAM Exemption are satisfied, neither the QPAM nor a
         person controlling or controlled by the QPAM (applying the definition
         of "control" in Section V(e) of the QPAM Exemption) owns a 5% or more
         interest in the Company and (i) the identity of such QPAM and (ii) the
         names of all employee benefit plans whose assets are included in such
         investment fund have been disclosed on Schedule 9B hereto; or





                                     - 55 -
<PAGE>   61
                 (iv)     the Source is a governmental plan; or

                 (v)      the Source is one or more employee benefit plans or
         plans or a separate account, trust fund or other entity the assets of
         which consist of "plan assets" of any employee benefit plans or plans
         as defined in Department of Labor regulation Section 2510.3-101, and
         each such employee benefit plan or plan has been disclosed on Schedule
         9B hereto; or

                 (vi)     the Source does not include assets of any employee
         benefit plan (other than a plan exempt from the coverage of ERISA) or
         plan or any other entity the assets of which consist of "plan assets"
         of employee benefit plans or plans as defined in Department of Labor
         regulation Section 2510.3-101.

As used in this Section 9B, the terms "employee benefit plan", "governmental
plan", "party in interest" and "separate account" shall have the respective
meanings assigned to such terms in Section 3 of ERISA, and the term "plan" has
the meaning assigned thereto in Section 4975(e)(1) of the Code.

         9C.     STATUS OF PURCHASER.  By its execution of this Agreement,
each Purchaser severally represents that it is an "accredited investor" by
reason of the provisions of clause (1), (3) or (7) of the definition of that
term in Regulation D under the Securities Act.

         9D.     REPRESENTATIONS OF EACH PURCHASER TO EACH OTHER PURCHASER.  By
its execution of this Agreement, each Purchaser severally represents and
acknowledges to each other Purchaser that it has, independently and without
reliance upon any other Purchaser and based on the financial statements
referred to in Section 8D, the Memorandum and such other documents and
information as it has deemed appropriate, made its own credit analysis and
decision to enter into this Agreement.  Each Purchaser also severally
represents and acknowledges to each other Purchaser that it will, independently
and without reliance upon any other Purchaser and based on such documents and
information as it shall deem appropriate at the time, continue to make its own
credit decisions in taking or not taking action under this Agreement.  The
provisions of this Section 9C are for the sole benefit of the Purchasers and
are not intended to benefit or to confer any right upon the Company or any
other Person.

         10.     DEFINITIONS.     For the purpose of this Agreement, the terms
defined in the introductory sentence and in Sections 1 and 2 shall have the
respective meanings specified therein, and the following terms shall have the
meanings specified with respect thereto below:





                                     - 56 -
<PAGE>   62
         10A.    YIELD-MAINTENANCE TERMS.

                 "BUSINESS DAY" shall mean any day other than a Saturday, a
Sunday or a day on which commercial banks in New York City are required or
authorized to be closed.

                 "CALLED PRINCIPAL" shall mean, with respect to any Note, the
principal of such Note that is to be prepaid pursuant to Section 4B or 4C or is
declared to be immediately due and payable pursuant to Section 7A, as the
context requires.

                 "DISCOUNTED VALUE" shall mean, with respect to the Called
Principal of any Note, the amount obtained by discounting all Remaining
Scheduled Payments with respect to such Called Principal from their respective
scheduled due dates to the Settlement Date with respect to such Called
Principal, in accordance with accepted financial practice and at a discount
factor (applied on the same periodic basis as that on which interest on the
Notes is payable) equal to the Reinvestment Yield with respect to such Called
Principal.

                 "REINVESTMENT YIELD" shall mean, with respect to the Called
Principal of any Note, 0.50% over the yield to maturity implied by (i) the
yields reported, as of 10:00 a.m. (New York City time) on the Business Day next
preceding the Settlement Date with respect to such Called Principal, on the
display designated as "Page 678" on the Telerate Service (or such other display
as may replace Page 678 on the Telerate Service) for actively traded U.S.
Treasury securities having a maturity equal to the Remaining Average Life of
such Called Principal as of such Settlement Date, or if such yields shall not
be reported as of such time or the yields reported as of such time shall not be
ascertainable, (ii) the Treasury Constant Maturity Series yields reported, for
the latest day for which such yields shall have been so reported as of the
Business Day next preceding the Settlement Date with respect to such Called
Principal, in Federal Reserve Statistical Release H. 15 (519) (or any
comparable successor publication) for actively traded U.S. Treasury securities
having a constant maturity equal to the Remaining Average Life of such Called
Principal as of such Settlement Date.  Such implied yield shall be determined,
if necessary, by (a) converting U.S. Treasury bill quotations to bond-
equivalent yields in accordance with accepted financial practice and (b)
interpolating linearly between yields reported for various maturities if no
maturity corresponds to the applicable Remaining Average Life.

                 "REMAINING AVERAGE LIFE" shall mean, with respect to the
Called Principal of any Note, the number of years (calculated to the nearest
one-twelfth year) obtained by dividing (i) such Called Principal into (ii) the
sum of the products obtained by multiplying (a) each Remaining Scheduled
Payment of such Called Principal (but not of interest thereon) by (b) the
number of years (calculated to the nearest one-twelfth year)





                                     - 57 -
<PAGE>   63
which will elapse between the Settlement Date with respect to such Called
Principal and the scheduled due date of such Remaining Scheduled Payment.

                 "REMAINING SCHEDULED PAYMENTS" shall mean, with respect to the
Called Principal of any Note, all payments of such Called Principal and
interest thereon that would be due on or after the Settlement Date with respect
to such Called Principal if no payment of such Called Principal were made prior
to its scheduled due date.

                 "SETTLEMENT DATE" shall mean, with respect to the Called
Principal of any Note, the date on which such Called Principal is to be prepaid
pursuant to Section 4B or 4C or is declared to be immediately due and payable
pursuant to Section 7A, as the context requires.

                 "YIELD-MAINTENANCE AMOUNT" shall mean, with respect to any
Note, an amount equal to the excess, if any, of the Discounted Value of the
Called Principal of such Note over the sum of (i) such Called Principal plus
(ii) interest accrued thereon as of (including interest due on) the Settlement
Date with respect to such Called Principal.  The Yield-Maintenance Amount shall
in no event be less than zero.

         10B.    OTHER TERMS.

                 "ACCEPTING HOLDERS" shall have the meaning specified in
Section 4D(iii).

                 "ACQUIRED DEBT" shall mean with respect to any specified
Person, (i) Indebtedness of any other Person existing at the time such other
Person merged with or into or became a Subsidiary of such specified Person,
including Indebtedness incurred in connection with, or in contemplation of,
such other Person merging with or into or becoming a Subsidiary of such
specified Person and (ii) Indebtedness encumbering any asset acquired by such
specified Person.

                 "ACQUISITION FACILITY" shall mean the proposed $35,000,000
acquisition revolving credit facility of the Company provided for in the Credit
Agreement for the purpose of financing acquisitions and improvements and
repairs.

                 "ADDITIONAL PARITY DEBT" shall mean Indebtedness of the
Company incurred in accordance with Section 6A and, clause (xiii) of Section 6B
to fund acquisitions or provide working capital, provided that the covenants
imposed on the Company therein or in any agreement or instrument relating
thereto are no more restrictive than the covenants imposed on the Company
herein, and provided, further, that no such Indebtedness shall be deemed
Additional Parity Debt unless immediately before and after giving effect to the
incurrence thereof no Default or Event of Default shall have occurred and be
continuing.





                                     - 58 -
<PAGE>   64
                 "ADMINISTRATIVE AGENT" shall mean The First National Bank of
Boston, as administrative agent under the Credit Agreement, together with its
successors as such administrative agent.

                 "AFFILIATE" shall mean, with respect to any Person any other
Person directly or indirectly controlling, controlled by, or under direct or
indirect common control with, such Person , except a  Subsidiary of such
Person.  A Person shall be deemed to control a corporation if such Person (i)
possesses, directly or indirectly, the power to direct or cause the direction
of the management and policies of such corporation, whether through the
ownership of voting securities, by contract or otherwise or (ii) owns at least
5% of the Voting Stock of a corporation.  As applied to the Company,
"Affiliate" includes without limitation the General Partner and the Master
Partnership.

                 "AGENTS" shall mean the Administrative Agent and Bank of
Oklahoma, National Association, as documentation agent under the Credit
Agreement, collectively.

                 "AGREEMENT" shall have the meaning set forth in Section 11C.

                 "ALLOCABLE PROCEEDS" shall mean, with respect to Excess Sale
Proceeds or Excess Taking Proceeds, as the case may be, to be applied on any
date pursuant to Sections 4C and 4D, the principal amount thereof available to
prepay the Notes determined by allocating such Excess Sale Proceeds or Excess
Taking Proceeds, as the case may be, pro rata among the holders of all Notes
and other Parity Debt (other than Indebtedness permitted by Section 6(B)(ii)),
if any, according to the aggregate principal amounts of the Notes and such
other Parity Debt outstanding on the date the applicable prepayment is to be
made in accordance with Sections 4C and 4D.

                 "ASSET ACQUISITION" shall mean (a) an Investment by the
Company or any Subsidiary of the Company in any other Person pursuant to which
such Person shall become a Subsidiary of the Company or shall be merged with or
into the Company or any Subsidiary of the Company, (b) the acquisition by the
Company or any Subsidiary of the Company of the assets of any Person which
constitute all or substantially all of the assets of such Person or (c) the
acquisition by the Company or any Subsidiary of the Company of any division or
line of business of any Person (other than a Subsidiary of the Company).

                 "ASSET SALE" shall have the meaning specified in Section
6G(iii).

                 "ASSETS" shall have the meaning specified in the second
opening paragraph hereof.

                 "ATTRIBUTABLE DEBT" shall mean, with respect to any Sale and
Lease-Back Transaction not involving a Capitalized Lease Obligation, as of any
date of determination,





                                     - 59 -
<PAGE>   65
the total obligation (discounted to present value at the rate of interest
implicit in the lease included in such transaction) of the lessee for rental
payments (other than accounts required to be paid on account of property taxes,
maintenance, repairs, insurance, assessments, utilities, operating and labor
costs and other items which do not constitute payments for property rights)
during the remaining portion of the term (including extensions which are at the
sole option of the lessor) of the lease included in such transaction (in the
case of any lease which is terminable by the lessee upon the payment of a
penalty, such rental obligation shall also include the amount of such penalty,
but no rent shall be considered as required to be paid under such lease
subsequent to the first date upon which it may be so terminated).

                 "AVAILABLE CASH" shall mean, with respect to any fiscal
quarter of the Company: (i) the sum of (a) all cash and cash equivalents of the
Company and its Subsidiaries on hand at the end of such quarter and (b) all
additional cash and cash equivalents of the Company and its Subsidiaries on
hand on the date of determination of Available Cash with respect to such
quarter resulting from borrowings for working capital purposes made subsequent
to the end of such quarter, less (ii) the amount of any cash reserves that is
necessary or appropriate in the reasonable discretion of the General Partner to
(a) provide for the proper conduct of the business of the Company and its
Subsidiaries (including reserves for future capital expenditures) subsequent to
such quarter, (b) comply with applicable law or any loan agreement, security
agreement, mortgage, debt instrument or other agreement or obligation to which
the Company or any Subsidiary is a party or by which it is bound or its assets
are subject (including the Financing Documents) and (c) provide funds for
distributions to partners of the Master Partnership and the General Partner in
respect of any one or more of the next four quarters; provided that the General
Partner need not establish cash reserves pursuant to clause (c) if the effect
of such reserves would be that the Master Partnership is unable to distribute
the Minimum Quarterly Distribution (as defined in the Agreement of Limited
Partnership of the Master Partnership) on all Common Units with respect to such
quarter; and provided, further, that disbursements made by the Company or a
Subsidiary of the Company or cash reserves established, increased or reduced
after the end of such quarter but on or before the date of determination of
Available Cash with respect to such quarter shall be deemed to have been made,
established, increased or reduced for purposes of determining Available Cash,
within such quarter if the General Partner so determines.  In addition, without
limiting the foregoing, Available Cash for any fiscal quarter shall reflect
reserves equal to (A) 50% of the interest projected to be paid on the Notes in
the next succeeding fiscal quarter plus (B) beginning with a date three fiscal
quarters before a scheduled principal payment date on the Notes, 25% of the
aggregate principal amount thereof due on any such payment date in the third
succeeding fiscal quarter, 50% of the aggregate principal amount due on any
such payment date in the second succeeding fiscal quarter and 75% of the
aggregate principal amount due on any quarterly payment date in





                                     - 60 -
<PAGE>   66
the next succeeding fiscal quarter, plus (C) the Unused Proceeds Reserve as of
the date of determination, provided that the foregoing reserves for amounts to
be paid on the Notes shall be reduced by the aggregate amount of advances
available to the Company from responsible financial institutions under binding
irrevocable (x) credit or financing commitments (which are subject to no
conditions which the Company is unable to meet) and (y) letters of credit
(which are subject to no conditions which the Company is unable to meet), in
each case, to be used to refinance such amounts to the extent such amounts
could be borrowed and remain outstanding under Sections 6A and 6B.

                 "BANKRUPTCY LAW" shall have the meaning specified in clause
(viii) of Section 7A.

                 "BI-STATE" shall mean Heritage - Bi State Corp. a Delaware
corporation.

                 "BUSINESS" shall have the meaning specified in the opening
paragraph hereof.

                 "CAPITAL STOCK" shall mean, with respect to any Person, any
and all shares, units representing interests, participations, rights in or
other equivalents (however designated) of such Person's capital stock,
including, with respect to partnerships, partnership interests (whether general
or limited) and any other interest or participation that confers upon a Person
the right to receive a share of the profits and losses of, or distributions of
assets of, such partnership, and any rights (other than debt securities
convertible into capital stock), warrants or options exchangeable for or
convertible into such capital stock.

                 "CAPITALIZED LEASE OBLIGATION" shall mean any rental
obligation which under GAAP would be required to be capitalized on the books of
the Company or any of its Subsidiaries, taken at the amount thereof accounted
for as indebtedness (net of interest expense) in accordance with such
principles.

                 "CASH EQUIVALENTS" shall have the meaning set forth in Section
6E(iii).

                 "CERCLA" shall mean the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, 42 U.S.C. Section  9601 et seq., as the
same may be amended from time to time.

                 "CERTIFICATES AND STOCK POWERS" shall have the meaning
specified in Section 3H.

                 "CHANGE OF CONTROL" shall mean the acquisition by any Person
or group of related persons (as such terms are defined in the Exchange Act)
(other than the Current





                                     - 61 -
<PAGE>   67
Management or group of related persons (as so defined) including the Current
Management) of beneficial ownership of more than 50% of the Units.

                 "CLOSING" shall have the meaning specified in Section 2.

                 "CLOSING DATE" shall have the meaning specified in Section 2.

                 "CODE" shall mean the Internal Revenue Code of 1986, as
amended.

                 "COLLATERAL" shall have the meaning specified in the Security
Agreement; provided, however, that Collateral shall not include for any purpose
under this Agreement or any other Financing Document any property subject to a
Lien incurred pursuant to clause (i), (vii) or (viii) of Section 6C or any
renewals of any such Lien pursuant to clause (xv) of Section 6C, unless the
Indebtedness secured by such Lien shall have been paid or discharged.

                 "COLLATERAL AGENT" shall have the meaning specified in Section
3H.

                 "COMMISSION" shall mean the United States Securities and
Exchange Commission.

                 "COMMON UNITS" shall have the meaning specified in the second
opening paragraph hereof.

                 "COMPANY" shall have the meaning specified in the third
opening paragraph hereof.

                 "CONSOLIDATED DEBT SERVICE" shall mean, as of any date of
determination, the total amount payable by the Company and its Subsidiaries on
a consolidated basis during the four consecutive calendar quarters next
succeeding the date of determination, in respect of scheduled principal and
interest payments with respect to Indebtedness of the Company and its
Subsidiaries outstanding on such date of determination, after giving effect to
any Indebtedness proposed on such date to be incurred and to the substantially
concurrent repayment of any other Indebtedness (a) including actual payments
under Capitalized Lease Obligations, (b) assuming, in the case of Indebtedness
(other than Indebtedness referred to in clause (c) below) bearing interest at
fluctuating interest rates which cannot be determined in advance, that the rate
actually in effect on such date will remain in effect throughout such period,
(c) including only actual interest (but not principal) payments associated with
the Indebtedness incurred pursuant to Section 6B(ii) and Section 6B(v) during
the most recent four consecutive calendar quarters and (d) treating the
principal amount of all Indebtedness outstanding as of such date of
determination under a revolving credit or similar agreement (other than the
Indebtedness incurred pursuant to Section 6B(ii) and Section 6B(v)) as maturing
and becoming due and





                                     - 62 -
<PAGE>   68
payable on the scheduled maturity date or dates thereof (including the maturity
of any payment required by any commitment reduction or similar amortization
provision), without regard to any provision permitting such maturity date to be
extended (except for such extensions as may be made in the sole discretion of
the borrower thereunder and without any conditions that remain to be fulfilled
by the borrower or waived by the lender thereunder).  See Section 10C.

                 "CONSOLIDATED EBITDA" shall mean, as of any date of
determination for any applicable period, (1) the sum of, without duplication,
the amounts for such period, taken as a single accounting period, of (a)
Consolidated Net Income and (b) to the extent deducted in the determination of
Consolidated Net Income, after excluding amounts attributable to minority
interests in Subsidiaries and without duplication, (i) Consolidated Non-Cash
Charges, (ii) Consolidated Interest Expense and (iii) Consolidated Income Tax
Expense less (2) any non-cash items increasing Consolidated Net Income for such
period to the extent that such items constitute reversals of a Consolidated
Non-Cash Charge for a previous period and which were included in the
computation of Consolidated EBITDA for such previous period pursuant to the
provisions of the preceding clause (1).  Consolidated EBITDA shall be
calculated after giving effect, on a pro forma basis and in accordance with
GAAP, to, without duplication, any Asset Sales or Asset Acquisitions (including
without limitation any Asset Acquisition giving rise to the need to make such
calculation as a result of the Company or one of its  Subsidiaries  incurring,
assuming or otherwise being liable for Acquired Debt) occurring during the
period commencing on the first day of such period to and including the date of
the transaction (the "REFERENCE PERIOD"), as if such Asset Sale or Asset
Acquisition occurred on the first day of the Reference Period; provided,
however, that Consolidated EBITDA generated by an acquired business or asset
shall be determined by the actual gross profit (revenues minus cost of goods
sold) of such acquired business or asset during the immediately preceding four
full fiscal quarters in the Reference Period minus the pro forma expenses that
would have been incurred by the Company and its Subsidiaries in the operation
of such acquired business or asset during such period computed on the basis of
personnel expenses for employees retained or to be retained by the Company and
its Subsidiaries in the operation of such acquired business or asset and
non-personnel costs and expenses incurred by the Company and its Subsidiaries
in the operation of the Company's business at similarly situated facilities of
the Company or any of its Subsidiaries (as determined in good faith by the
General Partner based upon reasonable assumptions).  As used herein,
Consolidated EBITDA shall be determined (a) on the basis of 100% of that amount
for the period of the four most recent fiscal quarters ending on or prior to
the date of determination, or (b) 50% of that amount for the period of the
eight most recent fiscal quarters ending on or prior to the date of
determination, whichever is higher.  See Section 10C.





                                     - 63 -
<PAGE>   69
                 "CONSOLIDATED FUNDED INDEBTEDNESS" shall mean, as of any date
of determination, the aggregate amount of Indebtedness of the Company and its
Subsidiaries outstanding on that date and maturing in more than 12 months,
including the Notes and borrowings under the Acquisition Facility (including
current maturities of any such Indebtedness).  Notwithstanding anything to the
contrary contained herein, Consolidated Funded Indebtedness shall not include
borrowings under the Revolving Working Capital Facility to the extent permitted
hereby.

                 "CONSOLIDATED INCOME TAX EXPENSE" shall mean, with respect to
the Company and its Subsidiaries, for any period, the provision for federal,
state, local and foreign income taxes of the Company and its Subsidiaries for
such period as determined on a consolidated basis in accordance with GAAP.  See
Section 10C.

                 "CONSOLIDATED INTEREST EXPENSE" shall mean, as of any date of
determination for any applicable period, without duplication, the sum of (i)
the interest expense of the Company and its Subsidiaries for such period as
determined on a consolidated basis in accordance with GAAP, including without
limitation (a) any amortization of debt discount, (b) the net cost under
Interest Rate Agreements, (c) the interest portion of any deferred payment
obligation, (d) all commissions, discounts and other fees and charges owed with
respect to letters of credit and bankers' acceptance financing and (e) all
accrued interest and (ii) the interest component of Capitalized Lease
Obligations paid, accrued or scheduled to be paid or accrued by the Company and
its Subsidiaries during such period as determined on a consolidated basis in
accordance with GAAP.  In computing Consolidated Interest Expense for any
period prior to the end of the first four fiscal quarters ending after the
Closing Date, Consolidated Interest Expense of the Company and its Subsidiaries
shall be determined on the basis of interest accruing at a rate equal to the
average interest rate payable on the date of determination with respect to
Indebtedness outstanding from time to time under the Notes, the Acquisition
Facility and the Revolving Working Capital Facility, rather than the rates of
interest applicable to the interest expense of the Indebtedness refinanced
thereby.  In computing Consolidated Interest Expenses for purposes of clause
(ii) of Section 6A, the applicable period for the determination thereof shall
be the four most recent fiscal quarters ending on or prior to the date of
determination.  See Section 10C.

                 "CONSOLIDATED NET INCOME" shall mean the net income of the
Company and its Subsidiaries, as determined on a consolidated basis in
accordance with GAAP and after provision for minority interests and as adjusted
to exclude (i) net after-tax extraordinary gains or losses, (ii) net after-tax
gains or losses attributable to Asset Sales, (iii) the net income or loss of
any Person which is not a  Subsidiary of the Company and which is accounted for
by the equity method of accounting, provided that Consolidated Net Income shall
include the amount of cash dividends or distributions actually paid to the
Company or any  Subsidiary of the Company, (iv) the net income or loss prior to
the





                                     - 64 -
<PAGE>   70
date of acquisition of any Person combined with the Company or any  Subsidiary
of the Company in a pooling of interest, (v) the net income of any  Subsidiary
of the Company to the extent that dividends or distributions of such net income
are not at the date of determination permitted by the terms of its charter or
any agreement, instrument, judgment, decree, order, statute, rule or other
regulation and (vi) the cumulative effect of any changes in accounting
principles.  See Section 10C.

                 "CONSOLIDATED NET TANGIBLE ASSETS" shall mean, as of any date
of determination, the Total Assets of the Company and its Subsidiaries, minus
the net book value of all assets of the Company and its Subsidiaries (after
deducting any reserves applicable thereto) which would be shown as intangible
assets on a consolidated balance sheet of the Company and its Subsidiaries as
of such time prepared in accordance with GAAP.  See Section 10C.

                 "CONSOLIDATED NET WORTH" shall mean, with respect to any
Person, as of any date of determination, the total partners' capital (in the
case of a partnership) or stockholders' equity (in the case of a corporation)
of such Person at such date, as would be shown on a consolidated balance sheet
of such Person and its Subsidiaries, if any, prepared in accordance with GAAP.
See Section 10C.

                 "CONSOLIDATED NON-CASH CHARGES" shall mean with respect to the
Company and its Subsidiaries, for any period, the aggregate depreciation and
amortization, in each case reducing Consolidated Net Income of the Company and
its Subsidiaries for such period, determined on a consolidated basis in
accordance with GAAP.  See Section 10C.

                 "CONSOLIDATED PRO FORMA MAXIMUM DEBT SERVICE" shall mean, as
of any date of determination, the maximum amount payable by the Company and its
Subsidiaries on a consolidated basis during all periods of four consecutive
calendar quarters, commencing with the calendar quarter in which such date of
determination occurs and ending June 30, 2011, in respect of scheduled
principal and interest payments with respect to all Indebtedness of the Company
and its Subsidiaries outstanding on such date of determination, after giving
effect to any Indebtedness proposed on such date to be incurred and to the
substantially concurrent repayment of any other Indebtedness (a) including all
payments under Capitalized Lease Obligations, (b) assuming, in the case of
Indebtedness (other than Indebtedness referred to in clause (c) below) bearing
interest at fluctuating interest rates which cannot be determined in advance,
that the rate actually in effect on such date will remain in effect throughout
such period, (c) including only actual interest (but not principal) payments
associated with the Indebtedness incurred pursuant to Section 6B(ii) during the
most recent four consecutive calendar quarters and (d) treating the principal
amount of all Indebtedness outstanding as of such date of determination under a
revolving credit or similar agreement (other than the Indebtedness





                                     - 65 -
<PAGE>   71
incurred pursuant to Section 6B(ii)) as maturing and becoming due and payable
on the scheduled maturity date or dates thereof (including the maturity of any
payment required by any commitment reduction or similar amortization
provision), without regard to any provision permitting such maturity date to be
extended (except for such extensions as may be made in the sole discretion of
the borrower thereunder and without any conditions that remain to be fulfilled
by the borrower or waived by the lender thereunder).  See Section 10C.

                 "CONSOLIDATED TANGIBLE NET WORTH" shall mean, with respect to
any Person, at any date of determination, the then Consolidated Net Worth of
such Person minus the net book value of all assets of such Person and its
Subsidiaries, if any (after deducting any reserves applicable thereto), which
would be shown as intangible assets on a consolidated balance sheet of such
Person and its Subsidiaries, if any, as of such time prepared in accordance
with GAAP.  See Section 10C.

                 "CONTRIBUTION AGREEMENT" shall mean the Contribution,
Conveyance and Assumption Agreement, dated as of June 28, 1996, among Heritage,
the Operating Partnership and the other signatories thereto, as the same may
from time to time be amended, supplemented or otherwise modified in accordance
with the terms thereof and hereof.

                 "CONTROL EVENT" shall mean:

                 (i)      the execution of any written agreement to which the
         Company or any Affiliate of the Company is a party which could
         reasonably be expected to result in a Change of Control, or

                 (ii)     the commencement (as such term is used in Rule
         14d-2(a) under the Exchange Act as in effect on the date of the
         Closing) of a tender offer by any person (as such term is used in
         Section 13(d) and Section 14(d)(2) of the Exchange Act as in effect on
         the date of the Closing) or related person constituting a group (as
         such term issued in Rule 13d-5 under the Exchange Act as in effect on
         the date of the Closing) for units which would result in such person
         or group owning, directly or indirectly, more than 50% of the
         outstanding Units.

                 "CONVEYANCE AGREEMENTS" shall mean (a) the Contribution
Agreement and (b) each of the individual bills of sale and other conveyance
documents delivered to the Company pursuant to the Contribution Agreement in
each case as the same may from time to time be amended, supplemented or
otherwise modified in accordance with the terms thereof and hereof.

                 "CREDIT AGREEMENT" shall mean the Credit Agreement dated as of
the date hereof among the Operating Partnership, the Agents and the financial
institutions which





                                     - 66 -
<PAGE>   72
are or become parties from time to time thereto, evidencing the Acquisition
Facility and the Revolving Working Capital Facility, as the same may be
amended, supplemented or otherwise modified from time to time in accordance
with the terms thereof and hereof.

                 "CURRENT MANAGEMENT" shall mean the individual executive
officers of the General Partner named as such in the Registration Statement,
together with the heirs of, and trusts for the benefit of family members
controlled by, any such executive officer.

                 "ENVIRONMENTAL LAWS" shall mean all applicable federal, state,
local and foreign laws, rules or regulations as amended from time to time,
relating to emissions, discharges, releases, threatened releases, removal,
remediation or abatement of pollutants, contaminants, chemicals or industrial,
toxic or hazardous substances or wastes into or in the environment (including
without limitation air, surface water, ground water or land), or otherwise used
in connection with the manufacture, processing, distribution, use, treatment,
storage, disposal, transport or handling of pollutants, contaminants, toxic or
hazardous substances or wastes, as defined under such applicable laws.

                 "EQUITY INTEREST" shall mean, with respect to any Person, any
capital stock issued by such Person, regardless of class or designation, or any
limited or general partnership interest in such Person, regardless of
designation, and all warrants, options, purchase rights, conversion or exchange
rights, voting rights, calls or claims of any character with respect thereto.

                 "EQUITY REPURCHASE" shall have the meaning specified in
Section 8M.

                 "ERISA" shall mean the Employee Retirement Income Security Act
of 1974, as amended.

                 "ERISA AFFILIATE" shall mean any trade or business (whether or
not incorporated) that, together with the Company, is treated as a single
employer under Section 414(b) or (c) of the Code, or, solely for purposes of
Section 302 of ERISA and Section 412 of the Code, is treated as a single
employer under Section 414 of the Code.

                 "ERISA EVENT" shall mean (i) any "reportable event", as
defined in Section 4043 of ERISA or the regulations issued thereunder, with
respect to a Plan; (ii) the adoption of any amendment to a Plan that would
require the provision of security pursuant to Section 401(a)(29) of the Code or
Section 307 of ERISA; (iii) the existence with respect to any Plan of an
"accumulated funding deficiency" (as defined in Section 412 of the Code or
Section 302 of ERISA), whether or not waived; (iv) the filing pursuant to
Section 412(d) of the Code or Section 303(d) of ERISA of an application for a
waiver of the minimum funding standard with respect to any Plan; (v) the
incurrence of any liability under Title IV of ERISA with respect to the
termination of any Plan or the withdrawal or partial withdrawal of the Company
or any of its ERISA Affiliates from any





                                     - 67 -
<PAGE>   73
Plan or Multiemployer Plan; (vi) the receipt by the Company or any ERISA
Affiliate from the PBGC or a plan administrator of any notice relating to the
intention to terminate any Plan or Plans or to appoint a trustee to administer
any Plan; (vii) the receipt by the Company or any ERISA Affiliate of any notice
concerning the imposition of Withdrawal Liability or a determination that a
Multiemployer Plan is, or is expected to be, insolvent or in reorganization,
within the meaning of Title IV of ERISA; and (viii) the occurrence of a
"prohibited transaction" with respect to which the Company or any of its
Subsidiaries is a "disqualified person" (within the meaning of Section 4975 of
the Code) and with respect to which the Company or such Subsidiary would be
liable for the payment of an excise tax.

                 "EVENT OF DEFAULT" shall mean any of the events specified in
Section 7A, provided that there has been satisfied any requirement in
connection with such event for the giving of notice, or the lapse of time, or
the happening of any further condition, event or act, and "DEFAULT" shall mean
any of such events, whether or not any such requirement has been satisfied.

                 "EXCESS PROCEEDS" shall have the meaning set forth in Section
4C(iv).

                 "EXCESS SALE PROCEEDS" shall have the meaning set forth in
Section 6G(iii)(c)(II).

                 "EXCESS TAKING PROCEEDS" shall have the meaning set forth in
Section 4C(ii).

                 "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934,
as amended.

                 "FINANCING DOCUMENTS" shall mean this Agreement and the
Security Documents.

                 "FINANCING STATEMENTS" shall have the meaning specified in
Section 3H.

                 "GAAP" shall have the meaning specified in Section 10C.

                 "GENERAL PARTNER" shall have the meaning specified in the
third opening paragraph hereof.

                 "GOVERNMENTAL AUTHORITY" shall mean any governmental agency,
authority, instrumentality or regulatory body, other than a court or other
tribunal, in each case whether federal, state, local or foreign.

                 "GUARANTY" shall mean, with respect to any Person, any direct
or indirect liability, contingent or otherwise, of such Person with respect to
any Indebtedness of





                                     - 68 -
<PAGE>   74
another, including, without limitation, any such obligation directly or
indirectly guaranteed, endorsed (otherwise than for collection or deposit in
the ordinary course of business) or discounted or sold with recourse by such
Person, or in respect of each such Person is otherwise directly or indirectly
liable, including, without limitation, any such obligation in effect guaranteed
by such Person through any agreement (contingent or otherwise) to purchase,
repurchase or otherwise acquire such obligation or any security therefor, or to
provide funds for the payment or discharge of such obligation (whether in the
form of loans, advances, stock purchases, capital contributions or otherwise),
or to maintain the solvency or any balance sheet or other financial condition
of the obligor of such obligation, or to make payment for any products,
materials or supplies or for any transportation or services regardless of the
non-delivery or non- furnishing thereof, in any such case if the purpose or
intent of such agreement is to provide assurance that such obligation will be
paid or discharged, or that any agreements relating thereto will be complied
with, or that the holders of such obligation will be protected against loss in
respect thereof.  The amount of any Guaranty shall be equal to the outstanding
principal amount of the obligation guaranteed or such lesser amount to which
the maximum exposure of the guarantor shall have been specifically limited.

                 "HAZARDOUS SUBSTANCE" shall mean any substance so designated
pursuant to CERCLA, asbestos, petroleum, urea formaldehyde insulation and
petroleum by-products (other than propane).

                 "HERITAGE" shall have the meaning specified in the first
opening paragraph hereof.

                 "INDEBTEDNESS" shall mean, with respect to any Person, without
duplication,

                 (a)      any indebtedness for borrowed money, all obligations
upon which interest charges are customarily paid and all obligations evidenced
by any bond, note, debenture or other similar instrument which such Person has
directly or indirectly created, incurred or assumed;

                 (b)      all obligations of others secured by any Lien in
respect of property owned by such Person, whether or not such Person has
assumed or become liable for the payment of such indebtedness; provided that
the amount of such Indebtedness, if such Person has not assumed the same or
become liable therefor, shall in no event be deemed to be greater than the fair
market value from time to time of the property subject to such Lien;

                 (c)      any indebtedness, whether or not for borrowed money
(excluding trade payables and accrued expenses arising in the ordinary course
of business), with





                                     - 69 -
<PAGE>   75
respect to which such Person has become directly or indirectly liable and which
represents the deferred purchase price (or a portion thereof) or has been
incurred to finance the purchase price (or a portion thereof) of any property
or service or business acquired by such Person, whether by purchase,
consolidation, merger or otherwise;

                 (d)      the principal component of any Capitalized Lease
Obligations to the extent such obligations would, in accordance with GAAP,
appear on a balance sheet of such Person;

                 (e)      all Attributable Debt of such Person in respect of
Sale and Lease-Back Transactions not involving a Capitalized Lease Obligation;

                 (f)      all Redeemable Capital Stock of such Person valued at
the greater of its voluntary or involuntary maximum fixed repurchase price plus
accrued dividends;

                 (g)      any Preferred Stock of any Subsidiary of such Person
valued at the liquidation preference thereof, or any mandatory redemption
payment obligations in respect thereof plus, in either case, accrued dividends
thereon;

                 (h)      any indebtedness of the character referred to in
clause (a), (b), (c), (d), (e), (f) or (g) of this definition deemed to be
extinguished under GAAP but for which such Person remains legally liable;

                 (i)      any indebtedness of any other Person of the character
referred to in clause (a), (b), (c), (d), (e), (f), (g) or (h) of this
definition with respect to which the Person whose Indebtedness is being
determined has become liable by way of a Guaranty;

                 (j)      all obligations, contingent or fixed, of such person
as an account party in respect of letters of credit (other than letters of
credit incurred in the ordinary course of business and consistent with past
practice);

                 (k)      all liabilities of such Person in respect of unfunded
vested benefits under pension plans (determined on a net basis for all such
plans) and all asserted withdrawal liabilities of such Person or a commonly
controlled entity to a Multiemployer Plan;

                 (l)      Swaps (other than Interest Rate Agreements);

                 (m)      all obligations of such Person in respect of bankers'
acceptances (other than in respect of accounts payable to suppliers incurred in
the ordinary course of business consistent with past practice); and





                                     - 70 -
<PAGE>   76
                 (n)      any amendment, supplement, modification, deferral,
renewal, extension or refunding of any liability of the types referred to in
clauses (a) through (m) above.

                 For purposes hereof, the "maximum fixed repurchase price" of
any Redeemable Capital Stock which does not have a fixed repurchase price shall
be calculated in accordance with the terms of such Redeemable Capital Stock as
if such Redeemable Capital Stock were purchased on any date on which
Indebtedness shall be required to be determined pursuant to this Agreement and
if such price is based upon, or measured by, the fair market value of such
Redeemable Capital Stock, such fair market value shall be determined in good
faith by the board of directors or a similar governing body of the issuer of
such Redeemable Capital Stock.

                 "INTERCREDITOR AGREEMENT" shall have the meaning specified in
Section 3H.

                 "INTEREST RATE AGREEMENT" shall mean any fully matched
interest rate Swap entered into with the intent to protect the Company against
fluctuations in interest rates and entered into as a bona fide hedging
arrangement and not for purposes of investment or speculation.

                 "INVESTMENT" shall mean, as applied to any Person, any direct
or indirect purchase or other acquisition by such Person of stock or other
securities of any other Person, or any direct or indirect loan, advance or
capital contribution by such Person to any other Person, and any other item
which would be classified as an "investment" on a balance sheet of such Person
prepared in accordance with GAAP, including without limitation any direct or
indirect contribution by such Person of property or assets to a joint venture,
partnership or other business entity in which such Person retains an interest
(it being understood that a direct or indirect purchase or other acquisition by
such Person of assets of any other Person (other than stock or other
securities) shall not constitute an "Investment" for purposes of this Agreement
so long as such assets are all used in the Business).  For the purposes of
Section 6E(v), the amount involved in Investments made during any period shall
be the aggregate cost to the Company and its Subsidiaries of all such
Investments made during such period, determined in accordance with GAAP, but
without regard to unrealized increases or decreases in value, or write-ups,
write-downs or write-offs, of such Investments and without regard to the
existence of any undistributed earnings or accrued interest with respect
thereto accrued after the respective dates on which such Investments were made,
less any net return of capital realized during such period upon the sale,
repayment or other liquidation of such Investments (determined in accordance
with GAAP, but without regard to any amounts received during such period as
earnings (in the form of dividends not constituting a return of capital,
interest or





                                     - 71 -
<PAGE>   77
otherwise) on such Investments or as loans from any Person in whom such
Investments have been made).  See Section 10C.

                 "INVESTMENT LIMIT" shall have the meaning specified in Section
6E.

                 "LEGAL REQUIREMENT" shall mean any law, statute, ordinance,
decree, requirement, order, judgment, rule or regulation (or published official
interpretation of any of the foregoing by any Governmental Authority) of any
Governmental Authority.

                 "LIABILITIES" shall have the meaning specified in the second
opening paragraph hereof.

                 "LIEN" shall mean any mortgage, pledge, security interest,
encumbrance, contractual deposit arrangement, lien (statutory or otherwise) or
charge of any kind (including any agreement to give any of the foregoing, any
conditional sale or other title retention agreement, any lease in the nature
thereof, and the filing of or agreement to give any financing statement under
the Uniform Commercial Code of any jurisdiction) or any other type of
preferential arrangement for the purpose, or having the effect, of protecting a
creditor against loss or securing the payment or performance of an obligation.

                 "MASTER PARTNERSHIP" shall have the meaning specified in the
second opening paragraph hereof.

                 "MATERIAL ADVERSE EFFECT" shall mean (a) a material adverse
effect on the business, assets or financial condition of the Company or the
Company and its Subsidiaries taken as a whole after giving effect to the
Transactions, (b) a material impairment of the ability of the Company or any
Subsidiary of the Company to perform any of its obligations under the Financing
Documents to which it is a party or (c) a material adverse effect on the
enforceability of any of the Financing Documents.

                 "MEMORANDUM" shall mean the memorandum dated May, 1996,
prepared by Prudential Securities Incorporated for use in connection with the
Company's private placement of the Notes.

                 "MULTIEMPLOYER PLAN" shall mean a "multiemployer plan" as
defined in section 4001(a)(3) of ERISA.

                 "NET PROCEEDS" shall mean the proceeds of any sale of assets
in the form of cash or cash equivalents including payments in respect of
deferred payment obligations when received in the form of cash or cash
equivalents net of (i) brokerage commissions and other fees and expenses
related to such sale, (ii) provisions for any taxes payable as a result of such
sale, (iii) amounts required to be paid to any Person (other than the Company
or any  Subsidiary of the Company) owning a beneficial interest in the assets





                                     - 72 -
<PAGE>   78
sold, (iv) appropriate amounts to be provided by the Company or any  Subsidiary
of the Company, as the case may be, as a reserve required in accordance with
GAAP against any liabilities associated with such sale of assets and retained
by the Company or any  Subsidiary of the Company, as the case may be, after
such sale and (v) amounts required to be applied to the repayment of
Indebtedness (other than the Notes and amounts due under the Revolving Working
Capital Facility or Acquisition Facility) secured by a Lien on the assets sold.

                 "NON-ACCEPTING HOLDERS" shall have the meaning specified in
Section 4D(i).

                 "NON-COMPETE OBLIGATIONS" shall have the meaning specified in
Section 6C(viii).

                 "NOTES" shall have the meaning specified in Section 1.

                 "OFFERING" shall have the meaning specified in the second
opening paragraph hereof.

                 "OFFICER'S CERTIFICATE" shall mean, as to any corporation, a
certificate executed on its behalf by the Chairman of the Board of Directors
(if an officer) or its President or one of its Vice Presidents, and its
Treasurer, or Controller, or one of its Assistant Treasurers or Assistant
Controllers, and, as to the Master Partnership or the Operating Partnership, a
certificate executed on behalf of the Master Partnership or the Operating
Partnership, as the case may be, by its general partner in a manner which would
qualify such certificate (a) if such general partner were a corporation, as an
Officer's Certificate of such general partner hereunder or (b) if such general
partner were a partnership or other entity, as a certificate executed on its
behalf by Persons authorized to do so pursuant to the constituting documents of
such partnership or other entity.

                 "OPERATING PARTNERSHIP" shall have the meaning specified in
the second opening paragraph hereof.

                 "OPERATIVE AGREEMENTS" shall mean the Contribution Agreement,
the Conveyance Agreements, and the Partnership Agreement.

                 "PARITY DEBT" shall mean (a) Indebtedness of the Company
(other than the Notes) incurred in accordance with clauses (i), (ii) and (iii)
of Section 6B and (b) Additional Parity Debt.

                 "PARTNERSHIP AGREEMENT" shall mean the Agreement of Limited
Partnership of the Operating Partnership as in effect on the Closing Date, and
as the same





                                     - 73 -
<PAGE>   79
may from time to time be amended, supplemented or otherwise modified in
accordance with the terms thereof.

                 "PARTNERSHIP DOCUMENTS" shall mean the Agreement of Limited
Partnership of the Master Partnership and the Partnership Agreement, in each
case as in effect on the Closing Date and as the same may from time to time be
amended, supplemented or otherwise modified in accordance with the terms hereof
and thereof.

                 "PBGC" shall mean the Pension Benefit Guaranty Corporation or
any Governmental Authority succeeding to any of its functions.

                 "PERMITS" shall have the meaning specified in Section 8H.

                 "PERMITTED BANKS" shall have the meaning specified in Section
6E.

                 "PERSON" shall mean and include an individual, a partnership,
a joint venture, a corporation, a trust, an unincorporated organization and a
government or any department or agency thereof.

                 "PLAN" shall mean any "employee pension benefit plan" as such
term is defined in Section 3 of ERISA (other than a Multiemployer Plan) subject
to the provisions of Title IV of ERISA or Section 412 of the Code or Section
302 of ERISA, and in respect of which the Company or any ERISA Affiliate is
(or, if such plan were terminated, would under Section 4069 of ERISA be deemed
to be) an "employer" as defined in Section 3(5) of ERISA.

                 "PREFERRED STOCK" shall mean, as applied to the Capital Stock
of any Person, Capital Stock of any class or classes (however designated),
which is preferred as to the payment of distributions or dividends, or upon any
voluntary or involuntary liquidation or dissolution of such Person, over shares
or units of Capital Stock of any other class of such Person.

                 "PREMIUM" shall mean the Yield-Maintenance Amount and any
premium payable in connection with a Change of Control.

                 "PRIORITY DEBT" shall mean as of any date of determination,
the sum, without duplication, of (i) Indebtedness of the Subsidiaries of the
Company (other than Indebtedness owed to the Company or another Wholly-Owned
Subsidiary), plus (ii) Indebtedness of the Company and its Subsidiaries secured
by Liens permitted by clauses (i) and (vii) of Section 6C and any renewals of
such Liens permitted by clause (xv) of Section 6C.





                                     - 74 -
<PAGE>   80
                 "PROPERTY" shall mean any interest in any kind of property or
asset whether real, personal, or mixed, or tangible or intangible.

                 "PRO RATA OPTION" shall have the meaning specified in Section 
4D(iii).

                 "PTCE" shall have the meaning specified in Section 9B.

                 "PUHCA" shall have the meaning specified in Section 8U.

                 "PURCHASERS" shall have the meaning specified in the second
opening paragraph hereof.

                 "QPAM EXEMPTION" shall have the meaning specified in Section
9B.

                 "REDEEMABLE CAPITAL STOCK" shall mean, as of any date of
determination, any shares of any class or series of Capital Stock, that, either
by the terms thereof, by the terms of any security into which such shares are
convertible or exchangeable or by contract or otherwise, are or upon the
happening of an event or passage of time would be, required to be redeemed
prior to the stated maturity with respect to the principal of any Note or are
redeemable at the option of the holder thereof at any time prior to the stated
maturity of any Note, or are convertible into or exchangeable for Indebtedness
at any time prior to the stated maturity of any Note.

                 "REGISTRATION STATEMENT" shall mean the Registration Statement
on Form S-1 of Heritage Propane Partners, L.P. (Registration No. 333-4018)
filed with the Securities and Exchange Commission on April 25, 1996, as amended
by Amendment No. 1, filed with the Securities and Exchange Commission on June
4, 1996, Amendment No. 2, filed with the Securities and Exchange Commission on
June 14, 1996, and Amendment No. 3, filed with the Securities and Exchange
Commission on June 21, 1996, in the form when declared effective by the
Commission and as amended on or prior to the date of this Agreement.

                 "REQUIRED HOLDER(S)" shall mean the holder or holders of at
least 51% of the aggregate principal amount of the Notes from time to time
outstanding.

                 "RESPONSIBLE OFFICER" shall mean the chief executive officer,
chief operating officer, chief financial officer or chief accounting officer of
the Company or any other officer of the Company involved principally in its
financial administration or its controllership function.

                 "RESTRICTED PAYMENT" shall mean any payment or other
distribution, direct or indirect, in respect of any partnership or other equity
interest in the Company, except a distribution payable solely in additional
partnership or other equity interests in the





                                     - 75 -
<PAGE>   81
Company, and any payment, direct or indirect on account of the redemption,
retirement, purchase or other acquisition of any partnership or other equity
interest in the Company.

                 "REVOLVING WORKING CAPITAL FACILITY" shall mean the proposed
$15,000,000 revolving credit facility of the Company provided for in the Credit
Agreement for working capital and other general partnership purposes not to
exceed $15,000,000 aggregate principal amount at any time outstanding.

                 "SALE AND LEASE-BACK TRANSACTION" shall mean, with respect to
any Person (a "TRANSFEROR"), any arrangement (other than between the Company
and a Wholly-Owned Restricted Subsidiary or between Wholly-Owned Restricted
Subsidiaries) whereby (a) property (the "SUBJECT PROPERTY") has been or is to
be disposed of by such Transferor to any other Person with the intention on the
part of such Transferor of taking back a lease of such Subject Property
pursuant to which the rental payments are calculated to amortize the purchase
price of such Subject Property substantially over the useful life of such
Subject Property, and (b) such Subject Property is in fact so leased by such
Transferor or an Affiliate of such Transferor.

                 "SECURITIES ACT" shall mean the Securities Act of 1933, as
amended.

                 "SECURITY AGREEMENT" shall have the meaning specified in
Section 3H.

                 "SECURITY DOCUMENTS"  shall mean the Security Agreement, the
Certificates and Stock Powers and the Financing Statements.

                 "SENIOR DEBT" shall mean Indebtedness of the Company which is
not expressed to be junior or subordinate to any other Indebtedness of the
Company.

                 "SIGNIFICANT SUBSIDIARY GROUP" shall mean any Subsidiary of
the Company, or any group of Subsidiaries of the Company, which at any time of
determination account for (or in the case of a recently formed or acquired
Subsidiary would have so accounted for on a pro forma basis) more than 5% of
consolidated operating revenues of the Company and its Subsidiaries for the
fiscal year most recently ended or more than 5% of consolidated total assets of
the Company and its Subsidiaries as of the end of the most recently ended
fiscal quarter, in each case computed in accordance with GAAP.

                 "SOURCE" shall have the meaning specified in Section 9B.

                 "SUBORDINATED UNITS" shall have the meaning specified in the
second opening paragraph hereof.





                                     - 76 -
<PAGE>   82
                 "SUBSIDIARY" shall mean, with respect to any Person, any
corporation, limited liability company, partnership, joint venture,
association, trust or other entity of which (or in which) more than 50% of (a)
the issued and outstanding Capital Stock having ordinary voting power to elect
a majority of the board of directors of such corporation (irrespective of
whether at the time Capital Stock of any other class or classes of such
corporation shall or might have voting power upon the occurrence of any
contingency), (b) the interests in the capital or profits of such partnership,
limited liability company, joint venture or association with ordinary voting
power to elect a majority of the board of directors (or Persons performing
similar functions) of such partnership, limited liability company, joint
venture or association, or (c) the beneficial interests in such trust or other
entity with ordinary voting power to elect a majority of the board of trustees
(or Persons performing similar functions) of such trust or other entity, is at
the time directly or indirectly owned or controlled by such Person, by such
Person and one or more of its other Subsidiaries, or by one or more of such
Person's other Subsidiaries.  For the purposes of any computation under Section
6A or clause (xiii) of Section 6B, the defined terms Consolidated Debt Service,
Consolidated EBITDA, Consolidated Funded Indebtedness, Consolidated Interest
Expense and Consolidated Pro Forma Maximum Debt Service shall be calculated on
the basis that Bi-State is a Subsidiary of the Company, but only as long as the
Company shall own 50% or more of the interests in the capital or profits of
Bi-State with ordinary voting power to elect a majority of the board of
directors (or Persons performing similar functions) thereof.

                 "SWAPS" shall mean, with respect to any Person, payment
obligations (fixed or contingent) with respect to interest rate swap
agreements, interest rate cap agreements, interest rate collar agreements,
currency swaps and similar obligations obligating such Person to make payments,
whether periodically or upon the happening of a contingency.  For the purposes
of this Agreement, the amount of the obligation under any Swap shall be the
amount determined in respect thereof as of the end of the then most recently
ended fiscal quarter of such Person, based on the assumption that such Swap had
terminated at the end of such fiscal quarter, and in making such determination,
if any agreement relating to such Swap provides for the netting of amounts
payable by and to such Person thereunder or if any such agreement provides for
the simultaneous payment of amounts by and to such Person, then in each such
case, the amount of such obligation shall be the net amount so determined.

                 "TOTAL ASSETS" shall mean, as of any date of determination,
the consolidated total assets of the Company and its Subsidiaries as would be
shown on a consolidated balance sheet of the Company and its Subsidiaries
prepared in accordance with GAAP as of that date.  See Section 10C.

                 "TRANSACTIONS" shall have the meaning specified in the third
opening paragraph hereof.





                                     - 77 -
<PAGE>   83
                 "TRANSFEREE" shall mean any direct or indirect transferee of
all or any part of any Note purchased by any Purchaser under this Agreement.

                 "UNDERWRITING AGREEMENT" shall mean the Underwriting
Agreement, dated June 25, 1996, among the Partnership, the underwriters named
in Schedule I thereto and the other signatories thereto, relating to the Common
Units registered under the Registration Statement.

                 "UNITS" shall mean, collectively, the Common Units and the
Subordinated Units.

                 "UNUSED PROCEEDS RESERVE" shall mean, as of any date of
determination,  all amounts theretofore offered to prepay Parity Debt under
Section 6G(iii)(c)(II) and to prepay Notes under Section 4C, the prepayment of
which was declined by the applicable lenders, less the portion of such amounts
theretofore applied by the Company to operations or capital expenditures in
connection with the conduct of the Company's business.

                 "UNUTILIZED TAKING PROCEEDS" shall mean, as of any date, any
insurance or condemnation proceeds (net of the reasonable costs of proceedings
in connection therewith and settlements in respect thereof) in excess of
$100,000 with respect to any single occurrence that were received by the
Company or any of its Subsidiaries in respect of any damage, destruction,
condemnation or other taking of all or any portion of the properties or assets
of the Company or any of its Subsidiaries and that have not been reinvested by
the Company or  any of its Subsidiaries within a period of twelve months after
such receipt in the restoration, modification or replacement of the properties
or assets in respect of which such insurance or condemnation proceeds were
received.

                 "VOTING STOCK" shall mean, with respect to any corporation,
any shares of stock of such corporation the holders of which are entitled under
ordinary circumstances to vote for the election of directors of such
corporation (irrespective of whether at the time stock of any other class or
classes shall have or might have voting power by reason of the happening of any
contingency).

                 "WHOLLY-OWNED" shall mean, as applied to any Subsidiary of any
Person, a Subsidiary at least 98% (by vote or value) of the outstanding Equity
Interests (other than directors' qualifying shares, if required by law) of all
classes, taken together as a whole, of which are at the time owned by such
Person or by one or more of its Wholly-Owned Subsidiaries or by such Person and
one or more of its Wholly-Owned Subsidiaries.





                                     - 78 -
<PAGE>   84
                 "WITHDRAWAL LIABILITY" shall mean liability to a Multiemployer
Plan as a result of a complete or partial withdrawal from such Multiemployer
Plan, as such terms are defined in Part I of Subtitle E of Title IV of ERISA.

         10C.    ACCOUNTING PRINCIPLES, TERMS AND DETERMINATIONS.

                 (i)      All references in this Agreement to "generally
accepted accounting principles" or to "GAAP" shall be deemed to refer to
generally accepted accounting principles in effect in the United States at the
time of application thereof, but subject to the provisions of this Section 10C.
Unless otherwise specified herein, all accounting terms used herein shall be
interpreted, all determinations with respect to accounting matters hereunder
shall be made, and all unaudited financial statements and certificates and
reports as to financial matters required to be prepared hereunder shall be
prepared in accordance with generally accepted accounting principles, applied
on a basis consistent with the most recent audited consolidated financial
statements of the Company and its Subsidiaries delivered pursuant to clause
(ii) of Section 5A or, if no such statements have been so delivered, the most
recent audited financial statements referred to in clause (iii) of Section 8D.

                 (ii)     All references herein to "the Company and its
Subsidiaries" for the purposes of computing the consolidated financial
position, results of operations or other balance sheet or financial statement
items (including without limitation the computation of , Available Cash,
Consolidated Debt Service, Consolidated EBITDA, Consolidated Income Tax
Expense, Consolidated Indebtedness, Consolidated Interest Expense, Consolidated
Net Income, Consolidated Non- Cash Charges, Consolidated Pro Forma Maximum Debt
Service and Consolidated Total Assets) shall be deemed to include only the
Company and its Subsidiaries as separate legal entities and, unless otherwise
provided herein, shall not include the financial position, results of
operations, cash flows or other such items of any other Person , whether or not
in any particular instance, such accounting treatment would be in accordance
with GAAP.

         11.     MISCELLANEOUS.

         11A.    NOTE PAYMENTS.  The Company agrees that, so long as any
Purchaser shall hold any Note, it will make payments of principal of, interest
on and any Premium payable with respect to such Note, which comply with the
terms of this Agreement, by wire transfer of immediately available funds for
credit (not later than 12:00 noon, New York City time, on the date due) to such
Purchaser's account or accounts as specified in the Purchaser Schedule attached
hereto, or such other account or accounts in the United States as such
Purchaser may designate in writing, notwithstanding any contrary provision
herein or in any Note with respect to the place of payment, and without any
requirement of presenting such Note for payment.  Each Purchaser agrees that,
before





                                     - 79 -
<PAGE>   85
disposing of any Note, such Purchaser will make a notation thereon (or on a
schedule attached thereto) of all principal payments previously made thereon
and of the date to which interest thereon has been paid.  The Company agrees to
afford the benefits of this Section 11A to any Transferee which shall have made
the same agreement as each Purchaser has made in this Section 11A.

         11B.    EXPENSES.  The Company covenants and agrees, whether or not
the transactions contemplated hereby shall be consummated, to pay, and save
each Purchaser and any Transferee harmless against liability for the payment
of, all out-of-pocket expenses arising in connection with such transactions,
including without limitation or duplication all fees and expenses referred to
in Section 3K and (i) all document production and duplication charges and the
fees and expenses (including those incurred after the Closing) of not more than
one special counsel engaged by all of the Purchasers in connection with this
Agreement, and the transactions contemplated hereby and of any special counsel
employed by such Purchaser or such Transferee in connection with any subsequent
proposed modification of, or proposed consent under, this Agreement, whether or
not such proposed modification shall be effected or proposed consent granted,
(ii) the costs and expenses of the Collateral Agent, and (iii) the costs and
expenses, including attorneys' fees, incurred by such Purchaser or such
Transferee in obtaining or perfecting any security for the Notes, in enforcing
(or determining whether or how to enforce) any rights under this Agreement, the
Notes or the Security Documents or in responding to any subpoena or other legal
process or informal investigative demand issued in connection with this
Agreement or any Security Document or the transactions contemplated hereby or
by reason of such Purchaser's or such Transferee's having acquired any Note,
including without limitation costs and expenses incurred in any bankruptcy case
or a workout.  The obligations of the Company under this Section 11B shall
survive the transfer of any Note or portion thereof or interest therein by any
Purchaser or any Transferee and the payment of any Note.

         11C.    CONSENT TO AMENDMENTS.

                 (i)      This Agreement may be amended, and the Company may
take any action herein prohibited, or omit to perform any act herein required
to be performed by it, if the Company shall obtain the written consent to such
amendment, action or omission to act of the Required Holder(s) except that,
without the written consent of the holder or holders of all Notes at the time
outstanding, no amendment to this Agreement shall change the maturity of any
Note, or change the principal of, or the rate or time of payment of interest on
or any Premium payable with respect to any Note, or affect the time, amount or
allocation of any prepayments, or change the proportion of the principal amount
of the Notes required with respect to any consent, amendment, waiver or
declaration, or change the relative priority of the Notes in relation to any
other Indebtedness of the Company.  Each holder of any Note at the time or
thereafter





                                     - 80 -
<PAGE>   86
outstanding shall be bound by any consent authorized by this Section 11C,
whether or not such Note shall have been marked to indicate such consent but
any Notes issued thereafter may bear a notation referring to any such consent.
No course of dealing between the Company and the holder of any Note nor any
delay in exercising any rights hereunder or under any Note shall operate as a
waiver of any rights of any holder of such Note.  As used herein and in the
Notes, the term "this Agreement" and references thereto shall mean this
Agreement as it may from time to time be amended or supplemented.

                 (ii)     So long as there are any Notes outstanding, neither
the Company nor any of its Affiliates will submit a request to the holder of
any Note for any proposed waiver or amendment of any of the provisions of this
Agreement or the Notes unless each holder of Notes (irrespective of the amount
of Notes then owned by it) shall be informed thereof by the Company and shall
be afforded the opportunity of considering the same and shall be supplied by
the Company with sufficient information to enable it to make an informed
decision with respect thereto.  Neither the Company nor any of its Subsidiaries
or Affiliates will, directly or indirectly, pay or cause to be paid any
remuneration, whether by way of supplemental or additional interest fee or
otherwise, to any holder of Notes as consideration for or as inducement to
entering into any waiver or amendment of any of the terms and provisions of
this Agreement or the Notes by any holder of Notes unless such remuneration is
concurrently offered, on the same terms, ratably to each holder of Notes then
outstanding even if such holder did not consent to such waiver or amendment.

                 (iii)    Any consent given pursuant to this Section 11C by a
holder of a Note which has (i) transferred or agreed to transfer all or a
portion of its Notes to the Company or any of its Affiliates and (ii) provided
such consent as a condition to such transfer shall be valid and binding only
upon such holder.  Any amendment or waiver which becomes effective only with
such consent (and the consents of all other holders of the Notes which were
acquired under the same or similar conditions) shall be valid and binding only
upon such holder or holders, as the case may be.

         11D.    FORM, REGISTRATION, TRANSFER AND EXCHANGE OF NOTES; LOST
NOTES.  The Notes are issuable as registered notes without coupons in
denominations of at least $100,000 except as may be necessary to reflect any
principal amount less than or not evenly divisible by $100,000.  The Company
shall keep at its principal office a register in which the Company shall
provide for the registration of Notes and of transfers of Notes.  Upon
surrender for registration of transfer of any Note at the principal office of
the Company, the Company shall, at its expense within 5 Business Days, execute
and deliver one or more new Notes of like tenor and of a like aggregate
principal amount registered in the name of such transferee or transferees.  At
the option of the holder of any Note, such Note may be exchanged for other
Notes of like tenor and of any authorized denominations, of a like aggregate
principal amount, upon surrender of the Note to be exchanged at the principal
office of the Company.  Whenever any Notes are so





                                     - 81 -
<PAGE>   87
surrendered for exchange, the Company shall, at its expense within 5 Business
Days, execute and deliver the Notes which the holder making the exchange is
entitled to receive.  Every Note surrendered for registration of transfer or
exchange shall be duly endorsed, or be accompanied by a written instrument of
transfer duly executed, by the holder of such Note or such holder's attorney
duly authorized in writing.  Any Note or Notes issued in exchange for any Note
or upon transfer thereof shall carry the rights to unpaid interest and interest
to accrue which were carried by the Note so exchanged or transferred, so that
neither gain nor loss of interest shall result from any such transfer or
exchange.  Upon receipt of written notice from the holder of any Note of the
loss, theft, destruction or mutilation of such Note and, in the case of any
such loss, theft or destruction, upon receipt of such holder's unsecured
indemnity agreement (or, in the case of any holder of a Note other than an
institutional investor, upon receipt of an indemnity bond in such reasonable
amount as the Company may determine), or in the case of any such mutilation
upon surrender and cancellation of such Note, the Company will make and deliver
a new Note, of like tenor, in lieu of the lost, stolen, destroyed or mutilated
Note within 5 Business Days.

         11E.    PERSONS DEEMED OWNERS; PARTICIPATIONS.  Prior to due
presentment for registration of transfer, the Company may treat the Person in
whose name any Note is registered as the owner and holder of such Note for the
purpose of receiving payment of principal of, interest on and any Premium
payable with respect to such Note and for all other purposes whatsoever,
whether or not such Note shall be overdue, and the Company shall not be
affected by notice to the contrary.  Subject to the preceding sentence, the
holder of any Note may from time to time grant participations in such Note to
any Person on such terms and conditions as may be determined by such holder in
its sole and absolute discretion, provided that any such participation shall be
in a principal amount of at least $100,000.

         11F.    SURVIVAL OF REPRESENTATIONS AND WARRANTIES; ENTIRE AGREEMENT.
All representations and warranties contained herein or made in writing by or on
behalf of the Company in connection herewith shall survive the execution and
delivery of this Agreement and the Notes, the transfer by any Purchaser of any
Note or portion thereof or interest therein and the payment of any Note, and
may be relied upon by any Transferee, regardless of any investigation made at
any time by or on behalf of any Purchaser or any Transferee.  Subject to the
preceding sentence, this Agreement and the Notes embody the entire agreement
and understanding between the Purchasers and the Company and supersede all
prior agreements and understandings relating to the subject matter hereof.

         11G.    SUCCESSORS AND ASSIGNS.  All covenants and other agreements in
this Agreement contained by or on behalf of any of the parties hereto shall
bind and inure to the benefit of the respective successors and assigns of the
parties hereto (including, without limitation, any Transferee) whether so
expressed or not.





                                     - 82 -
<PAGE>   88
         11H.    DISCLOSURE TO OTHER PERSONS.  The Company acknowledges that
the holder of any Note may deliver copies of any financial statements and other
documents delivered to such holder, and disclose any other information
disclosed to such holder, by or on behalf of the Company or any of its
Subsidiaries in connection with or pursuant to this Agreement to (i) such
holder's directors, trustees, officers, employees, agents and professional
consultants, (ii) any other holder of any Note, (iii) any Person to which such
holder offers to sell such Note or any part thereof, (iv) any Person to which
such holder sells or offers to sell a participation in all or any part of such
Note, (v) any Person from which such holder offers to purchase any security of
the Company, (vi) any federal or state regulatory authority having jurisdiction
over such holder, (vii) the National Association of Insurance Commissioners or
any similar organization or (viii) any other Person to which such delivery or
disclosure may be necessary or appropriate (a) in compliance with any law,
rule, regulation or order applicable to such holder, (b) in response to any
subpoena or other legal process or informal investigative demand, (c) in
connection with any litigation to which such holder is a party or (d) in
connection with the enforcement (or attempted enforcement) of any of the
Financing Documents.  Each Purchaser agrees (and any Transferee which avails
itself of the benefits of Section 5A(iii) or (xii) or Section 5C shall be
deemed to have likewise agreed) (such Purchaser and any such Transferee each
herein called a "HOLDER") to hold in confidence in accordance with its internal
corporate practice for treating confidential information received from third
parties and not disclose any information (other than information (a) which was
publicly known or otherwise known to such Holder at the time of disclosure
(except pursuant to disclosure in connection with this Agreement), (b) which
subsequently becomes publicly known through no act or omission by such Holder,
or (c) which otherwise becomes known to such Holder, other than through
disclosure by the Company or any of its Subsidiaries) delivered or made
available by or on behalf of the Company or any of its Subsidiaries to such
Holder (including without limitation any nonpublic information obtained
pursuant to Section 5A or 5C) in connection with or pursuant to this Agreement
which is clearly marked or labeled as being confidential information, provided
that nothing herein shall prevent the holder of any Note from disclosing such
information as provided in the preceding sentence.

         11I.    NOTICES.  All written communications provided for hereunder
shall be sent by first class mail or nationwide overnight delivery service
(with charges prepaid) and by telecopy (such delivery confirmed by telephone)
and (i) if to any Purchaser, addressed to such Purchaser at the address (or
facsimile telephone number) specified for such communications in the Purchaser
Schedule attached hereto, or at such other address (or facsimile telephone
number) as such Purchaser shall have specified to the Company in writing, (ii)
if to any other holder of any Note, addressed to such other holder at such
address (or facsimile telephone number) as such other holder shall have
specified to the Company in writing or, if any such other holder shall not have
so specified an address to





                                     - 83 -
<PAGE>   89
the Company, then addressed to such other holder in care of the last holder of
such Note which shall have so specified an address to the Company, (iii) if to
the Company, to Heritage Operating, L.P., 8801 South Yale Avenue, Suite 310,
Tulsa, Oklahoma 74137, Attention:  Chief Financial Officer, or at such other
address (or facsimile telephone number) as the Company shall have specified to
the holder of each Note in writing.

         11J.    SUBSTITUTION OF WHOLLY-OWNED SUBSIDIARY.  With respect to the
Notes being purchased by any institutional investor, such Purchaser shall have
the right to substitute one of its Wholly-Owned Subsidiaries as the purchaser
of any of the Notes to be purchased by such Purchaser hereunder, by written
notice delivered to the Company, which notice shall be signed by such Purchaser
and such Subsidiary, shall contain such Subsidiary's agreement to be bound by
this Agreement and shall contain a confirmation by such Subsidiary of the
accuracy with respect to it of the representations contained in Section 9,
provided that such confirmation may contain a statement to the effect that such
Subsidiary shall at all times have the right to transfer the Notes being
purchased by it to such Purchaser.  The Company agrees that, upon receipt of
any such notice, whenever the terms "Purchaser" and "holder" are used in this
Agreement (other than this Section 11J), in reference to such transferring
Purchaser, such terms shall be deemed to refer to such Subsidiary in lieu of
said transferring Purchaser.  In the event that such Subsidiary is so
substituted hereunder and thereafter transfers its Notes or any portion thereof
to such transferring Purchaser, upon receipt by the Company of notice of such
transfer, whenever the terms "Purchaser" and "holder" are used in this
Agreement (other than in this Section 11J) in reference to such transferring
Purchaser, such terms shall be deemed to refer to such transferring Purchaser
to the extent it owns all or any portion of the Notes, and such transferring
Purchaser and such Subsidiary to such extent shall each have all the rights of
any original Purchaser of Notes under this Agreement.

         11K.    PAYMENTS DUE ON NON-BUSINESS DAYS.  Anything in this Agreement
or the Notes to the contrary notwithstanding, any payment of principal of or
interest on any Note that is due on a date other than a Business Day shall be
made on the next succeeding Business Day.  If the date for any payment is
extended to the next succeeding Business Day by reason of the preceding
sentence, the period of such extension shall be included in the computation of
the interest payable on such Business Day.

         11L.    SATISFACTION REQUIREMENT.  If any agreement, certificate or
other writing, or any action taken or to be taken, is by the terms of this
Agreement required to be satisfactory to any Purchaser or to the Required
Holder(s), the determination of such satisfaction shall be made by such
Purchaser or the Required Holder(s), as the case may be, in the sole and
exclusive judgment (exercised in good faith) of the Person or Persons making
such determination.





                                     - 84 -
<PAGE>   90
         11M.    GOVERNING LAW.  THIS AGREEMENT SHALL BE CONSTRUED AND ENFORCED
IN ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE GOVERNED BY, THE LAW
OF THE STATE OF NEW YORK WITHOUT REFERENCE TO ITS CONFLICT OF LAW PRINCIPLES.

         11N.    SEVERABILITY.  Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

         11O.    DESCRIPTIVE HEADINGS.  The descriptive headings of the several
Sections of this Agreement are inserted for convenience only and do not
constitute a part of this Agreement.

         11P.    COUNTERPARTS.  This Agreement may be executed in any number of
counterparts, each of which shall be an original but all of which together
shall constitute one instrument.

         11Q.    SEVERALTY OF OBLIGATIONS.  The sales of Notes to the
Purchasers are to be several sales, and the obligations of the Purchasers under
this Agreement are several obligations.  Except as provided in Section 3G, no
failure by any Purchaser to perform its obligations under this Agreement shall
relieve any other Purchaser or the Company of any of its obligations hereunder,
and no Purchaser shall be responsible for the obligations of, or any action
taken or omitted by, any other Purchaser hereunder.

         11R.    WAIVER OF JURY TRIAL.  EACH OF THE PARTIES HERETO KNOWINGLY,
VOLUNTARILY AND INTENTIONALLY WAIVES ANY RIGHTS IT MAY HAVE TO A TRIAL BY JURY
IN RESPECT OF ANY LITIGATION ARISING OUT OF, UNDER, OR IN CONNECTION WITH THIS
AGREEMENT, ANY EXHIBIT HERETO OR ANY FINANCING DOCUMENT, OR ANY COURSE OF
CONDUCT, COURSE OF DEALING OR STATEMENTS (WHETHER ORAL OR WRITTEN) MADE HEREIN
BY THE PARTIES.





                                     - 85 -
<PAGE>   91
         If you are in agreement with the foregoing, please sign the form of
acceptance on the enclosed counterparts of this letter and return the same to
Heritage and the Operating Partnership, whereupon this letter shall become a
binding agreement among Heritage, the Operating Partnership and the Purchasers.

                                        Very truly yours,



                                        HERITAGE HOLDINGS, INC.

                                           By /s/ H. Michael Krimbill
                                              ----------------------------------
                                              Name: H. Michael Krimbill
                                              Title:  Vice President & CFO
                                           


                                        HERITAGE OPERATING, L.P.

                                           By /s/ H. Michael Krimbill
                                              ----------------------------------
                                              Name: H. Michael Krimbill
                                              Title:  Vice President & CFO
                                           

<PAGE>   92

The foregoing Agreement is
hereby accepted as of the
date first above written.

JOHN HANCOCK MUTUAL LIFE INSURANCE COMPANY



By: /s/ Eileen M. Forde
    -------------------------------
    Name:  Eileen M. Forde
    Title: Investment Officer

<PAGE>   93


The foregoing Agreement is
hereby accepted as of the
date first above written.

JOHN HANCOCK VARIABLE LIFE INSURANCE COMPANY



By: /s/ Barry E. Welch 
    -------------------------------
    Name:  Barry E. Welch 
    Title: VP - Investments  

<PAGE>   94


The foregoing Agreement is
hereby accepted as of the
date first above written.

MELLON BANK, N.A., soley in its capacity as Trustee for the 
AT&T MASTER PENSION TRUST, (as directed by John Hancock
Mutual Life Insurance Company), and not in its individual capacity


By: /s/ William R. Nee 
    -------------------------------
    Name:  William R. Nee 
    Title: Associate Counsel 

<PAGE>   95


The foregoing Agreement is
hereby accepted as of the
date first above written.

MASSACHUSETTS MUTUAL LIFE INSURANCE COMPANY



By: /s/ Richard C. Morrison
    -------------------------------
    Name:  Richard C. Morrison
    Title: Managing Director

<PAGE>   96


The foregoing Agreement is
hereby accepted as of the
date first above written.

PRINCIPAL MUTUAL LIFE INSURANCE COMPANY



By: /s/ Warren Shank
    -------------------------------
    Name:  Warren Shank   
    Title: Counsel           


By: /s/ James K. Hovey
    -------------------------------
    Name:  James K. Hovey 
    Title: Director Securities Investment


<PAGE>   97


The foregoing Agreement is
hereby accepted as of the
date first above written.

NEW YORK LIFE INSURANCE COMPANY



By: /s/ Lydia S. Sangree
    -------------------------------
    Name:  Lydia S. Sangree
    Title: Investment Vice President

<PAGE>   98


The foregoing Agreement is
hereby accepted as of the
date first above written.

TEACHERS INSURANCE AND ANNUITY ASSOCIATION OF AMERICA



By: /s/ John Litchfield
    -------------------------------
    Name:  John Litchfield
    Title: Director-Private Placements

<PAGE>   99


The foregoing Agreement is
hereby accepted as of the
date first above written.

KEYPORT LIFE INSURANCE COMPANY
BY STEIN ROE & FARNHAM INCORPORATED, AS AGENT



By: /s/ Richard A. Hegwood
    -------------------------------
    Name:  Richard A. Hegwood
    Title: Senior Vice President

<PAGE>   100


The foregoing Agreement is
hereby accepted as of the
date first above written.

MONY LIFE INSURANCE COMPANY OF AMERICA    



By: /s/ Peter W. Oliver
    -------------------------------
    Name:  Peter W. Oliver
    Title: Authorized Agent  

<PAGE>   101


The foregoing Agreement is
hereby accepted as of the
date first above written.

THE MUTUAL LIFE INSURANCE COMPANY OF NEW YORK



By: /s/ Peter W. Oliver
    -------------------------------
    Name:  Peter W. Oliver
    Title: Managing Director 

<PAGE>   102


The foregoing Agreement is
hereby accepted as of the
date first above written.

PACIFIC MUTUAL LIFE INSURANCE COMPANY



By: /s/ Ronn C. Cornelius
    -------------------------------
    Name:  Ronn C. Cornelius
    Title: Assistant Vice President

<PAGE>   103


The foregoing Agreement is
hereby accepted as of the
date first above written.

THE LUTHERAN CHURCH-MISSOURI SYNOD FOUNDATION



By: /s/ Fred C. Sticht 
    -------------------------------
    Name:  Fred C. Sticht 
    Title: Vice President,
           Treasury & Investments

<PAGE>   104


The foregoing Agreement is
hereby accepted as of the
date first above written.

PHOENIX HOME LIFE INSURANCE COMPANY       



By: /s/ Keith D. Robbins
    -------------------------------
    Name:  Keith D. Robbins
    Title: Vice President    

<PAGE>   105


The foregoing Agreement is
hereby accepted as of the
date first above written.

GENERAL AMERICAN LIFE INSURANCE COMPANY



By: /s/ Douglas R. Koester
    -------------------------------
    Name:  Douglas R. Koester
    Title: Vice President, Gaimco

<PAGE>   106


The foregoing Agreement is
hereby accepted as of the
date first above written.

WISCONSIN NATIONAL LIFE INSURANCE COMPANY



By: /s/ Richard J. Bielen
    -------------------------------
    Name:  Richard J. Bielen
    Title:  Vice President, Investments
                         

By: /s/ Carl S. Thigpen  
    -------------------------------
    Name:  Carl S. Thigpen  
    Title:  Vice President, Investments
                         



<PAGE>   107
                                                                   EXHIBIT A - 1
                                 [FORM OF NOTE]
                            HERITAGE HOLDINGS, INC.
                  8.55% SENIOR SECURED NOTE DUE JUNE 30, 2011

No.____________                                   [Date]
$______________                                   PPN 42726# AA 9



       FOR VALUE RECEIVED, the undersigned, HERITAGE HOLDINGS, INC.
("Heritage"), a corporation organized and existing under the laws of the State
of Delaware, hereby promises to pay to ________________________________, or
registered assigns, the principal sum of ____________________________ DOLLARS,
with interest (computed on the basis of a 360-day year of twelve 30-day months)
(a) on the unpaid balance thereof at the rate of 8.55% per annum from the date
hereof, payable semiannually on each June 30 and December 31 commencing on
December 31, 1996, until the principal hereof shall have become due and
payable, and (b) on any overdue payment (including any overdue prepayment) of
principal, any overdue payment of interest and any overdue payment of any
Premium (as defined in the Agreement referred to below), payable semiannually
as aforesaid (or, at the option of the registered holder hereof, on demand), at
a rate per annum from time to time equal to the greater of (i) 10.55% or (ii)
2.0% over the rate of interest publicly announced by Morgan Guaranty Trust
Company in New York City as its Prime Rate.

       As provided in the Agreement, substantially all of the assets of
Heritage will be contributed to, and substantially all of the liabilities of
Heritage (including this Note) will be assumed by, Heritage Operating, L.P.
(the "Operating Partnership"), a limited partnership organized and existing
under the laws of Delaware, on the date this Note is issued.  As used herein,
the term the "Company" shall mean Heritage prior to such contribution and
assumption and the Operating Partnership on and after such contribution and
assumption.

       Payments of principal, Premium, if any, and interest on this Note shall
be made in lawful money of the United States of America at the main office of
Morgan Guaranty Trust Company or at such other place as the holder hereof shall
designate to the Company in writing, as provided in the Agreement.

       This Note is one of a series of Senior Secured Notes (the "Notes")
issued pursuant to a Note Purchase Agreement dated as of June 25, 1996 (the
"Agreement"), among Heritage, the
<PAGE>   108
Operating Partnership and the original purchasers of the Notes named in the
Purchaser Schedule attached thereto and is entitled to the benefits thereof.

       This Note is a registered Note and, as provided in the Agreement, upon
surrender of this Note for registration of transfer, duly endorsed, or
accompanied by a written instrument of transfer duly executed by the registered
holder hereof or such holder's attorney duly authorized in writing, a new Note
for a like principal amount will be issued to, and registered in the name of,
the transferee.  Prior to due presentment for registration of transfer, the
Company may treat the person in whose name this Note is registered as the owner
hereof for the purpose of receiving payment and for all other purposes, and the
Company shall not be affected by any notice to the contrary.

       The Company agrees to pay the principal amount of the Notes in nine
equal installments of $ ___________ on June 30 in each of the years 2002 to
2010, inclusive (subject to adjustment as provided in paragraph 4A of the
Agreement upon the occurrence of a partial prepayment of the Notes or a
prepayment of less than all of the Notes).  The remaining outstanding principal
amount of this Note, together with all accrued interest on this Note, shall
become due and payable on June 30, 2011.  This Note is also subject to
prepayment, in whole or from time to time in part, at the times and on the
terms specified in the Agreement, but not otherwise.

       The Company's obligations under this Note and the Agreement are secured
by a security interest in certain assets of the Company pursuant to the
Security Documents (as defined in the Agreement).

       If an Event of Default as defined in the Agreement occurs and is
continuing, the principal of this Note may be declared or otherwise become due
and payable in the manner, at the price (including any applicable Yield-
Maintenance Amount) and with the effect provided in the Agreement.

       THE COMPANY HEREBY WAIVES ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN
RESPECT OF ANY ACTION, PROCEEDING OR LITIGATION DIRECTLY OR INDIRECTLY ARISING
OUT OF, UNDER OR IN CONNECTION WITH, THIS NOTE OR THE AGREEMENT.




                                    - 2 -
<PAGE>   109
       THIS NOTE SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH, AND THE
RIGHTS OF THE PARTIES SHALL BE GOVERNED BY, THE LAW OF THE STATE OF NEW YORK
EXCLUDING CHOICE-OF-LAW PRINCIPLES OF THE LAW OF SUCH STATE THAT WOULD REQUIRE
THE APPLICATION OF THE LAWS OF A JURISDICTION OTHER THAN SUCH STATE.


                                      HERITAGE HOLDINGS, INC.


                                      By:                                       
                                         ---------------------------------------

                                      Its:                                      
                                           -------------------------------------





                                     - 3 -
<PAGE>   110
                                                                   EXHIBIT A - 2
                                 [FORM OF NOTE]
                            HERITAGE OPERATING, L.P.
                  8.55% SENIOR SECURED NOTE DUE JUNE 30, 2011

No.____________                                   [Date]
$______________                                   PPN 42726# AA 9



       FOR VALUE RECEIVED, the undersigned, HERITAGE OPERATING, L.P. (the
"COMPANY"), a limited partnership organized and existing under the laws of the
State of Delaware, hereby promises to pay to ________________________________,
or registered assigns, the principal sum of ____________________________
DOLLARS, with interest (computed on the basis of a 360-day year of twelve 30-
day months) (a) on the unpaid balance thereof at the rate of 8.55% per annum
from the date hereof, payable semiannually on each June 30 and December 31
commencing on December 31, 1996, until the principal hereof shall have become
due and payable, and (b) on any overdue payment (including any overdue
prepayment) of principal, any overdue payment of interest and any overdue
payment of any Premium (as defined in the Agreement referred to below), payable
semiannually as aforesaid (or, at the option of the registered holder hereof,
on demand), at a rate per annum from time to time equal to the greater of (i)
10.55% or (ii) 2.0% over the rate of interest publicly announced by Morgan
Guaranty Trust Company of New York in New York City as its Prime Rate.

       Payments of principal, Premium, if any, and interest on this Note shall
be made in lawful money of the United States of America at the main office of
Morgan Guaranty Trust Company of New York or at such other place as the holder
hereof shall designate to the Company in writing, as provided in the Agreement.

       This Note is one of a series of Senior Secured Notes (the "Notes")
issued pursuant to a Note Purchase Agreement dated as of June 25, 1996 (the
"Agreement"), among Heritage Holdings, Inc., the Company and the original
purchasers of the Notes named in the Purchaser Schedule attached thereto and is
entitled to the benefits thereof.

       This Note is a registered Note and, as provided in the Agreement, upon
surrender of this Note for registration of transfer, duly endorsed, or
accompanied by a written instrument of transfer duly executed by the registered
holder hereof or such holder's attorney duly authorized in writing, a new Note
for a like principal amount will be issued to, and registered in the name of,
the transferee.  Prior to due presentment for registration of transfer, the
Company may treat the
<PAGE>   111
person in whose name this Note is registered as the owner hereof for the
purpose of receiving payment and for all other purposes, and the Company shall
not be affected by any notice to the contrary.

       The Company agrees to pay the principal amount of the Notes in nine
equal installments of $ ___________ on June 30 in each of the years 2002 to
2010, inclusive (subject to adjustment as provided in paragraph 4A of the
Agreement upon the occurrence of a partial prepayment of the Notes or a
prepayment of less than all of the Notes).  The remaining outstanding principal
amount of this Note, together with all accrued interest on this Note, shall
become due and payable on June 30, 2011.  This Note is also subject to
prepayment, in whole or from time to time in part, at the times and on the
terms specified in the Agreement, but not otherwise.

       The Company's obligations under this Note and the Agreement are secured
by a security interest in certain assets of the Company pursuant to the
Security Documents (as defined in the Agreement).

       If an Event of Default as defined in the Agreement occurs and is
continuing, the principal of this Note may be declared or otherwise become due
and payable in the manner, at the price (including any applicable Yield-
Maintenance Amount) and with the effect provided in the Agreement.

       THE COMPANY HEREBY WAIVES ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN
RESPECT OF ANY ACTION, PROCEEDING OR LITIGATION DIRECTLY OR INDIRECTLY ARISING
OUT OF, UNDER OR IN CONNECTION WITH, THIS NOTE OR THE AGREEMENT.

       THIS NOTE SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH, AND THE
RIGHTS OF THE PARTIES SHALL BE GOVERNED BY, THE LAW OF THE STATE OF NEW YORK
EXCLUDING CHOICE-OF-LAW PRINCIPLES OF THE LAW OF SUCH STATE THAT WOULD REQUIRE
THE APPLICATION OF THE LAWS OF A JURISDICTION OTHER THAN SUCH STATE.


                                      HERITAGE OPERATING, L.P.


                                      By:                                       
                                         ---------------------------------------

                                      Its:                                      
                                           -------------------------------------





                                     - 2 -
<PAGE>   112
                                                                       EXHIBIT D

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



                            HERITAGE HOLDINGS, INC.,

                                      and

                           HERITAGE OPERATING, L.P.,

                                              as Assignors

                                      and

                           WILMINGTON TRUST COMPANY,

                                              as Collateral Agent


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

                             SECURITY AGREEMENT

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



                           Dated as of June 28, 1996


================================================================================
<PAGE>   113
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                             PAGE
                                                                             ----
<S>                                                                           <C>
ARTICLE I     SECURITY INTERESTS  . . . . . . . . . . . . . . . . . . . . . .  2

       1.1.   Grant of Security Interests   . . . . . . . . . . . . . . . . .  2
       1.2.   Power of Attorney   . . . . . . . . . . . . . . . . . . . . . .  3

ARTICLE II    GENERAL REPRESENTATIONS, WARRANTIES AND COVENANTS   . . . . . .  3

       2.1.   Necessary Filings; Endorsements   . . . . . . . . . . . . . . .  3
       2.2.   No Liens  . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
       2.3    Other Financing Statements  . . . . . . . . . . . . . . . . . .  4
       2.4.   Chief Executive Office; Records   . . . . . . . . . . . . . . .  4
       2.5.   Location of Inventory and Equipment   . . . . . . . . . . . . .  5
       2.6.   Trade Names; Change of Name   . . . . . . . . . . . . . . . . .  6
       2.7.   Establishment of Cash Concentration Account   . . . . . . . . .  6
       2.8.   Cash Management System; Deposits to the Cash
              Concentration Account   . . . . . . . . . . . . . . . . . . . .  7
       2.9.   Investment of Funds Deposited in the Cash
              Concentration Account   . . . . . . . . . . . . . . . . . . . .  7
       2.10.  Withdrawals and Applications from the Cash
              Concentration Account   . . . . . . . . . . . . . . . . . . . .  7
       2.11.  Recourse  . . . . . . . . . . . . . . . . . . . . . . . . . . .  8

ARTICLE III   SPECIAL PROVISIONS CONCERNING RECEIVABLES;
              CONTRACT RIGHTS; INSTRUMENTS  . . . . . . . . . . . . . . . . .  8

       3.1.   Additional Representations and Warranties   . . . . . . . . . .  8
       3.2.   Maintenance of Records  . . . . . . . . . . . . . . . . . . . .  8
       3.3.   Direction to Account Debtors; Contracting Parties; etc  . . . .  9
       3.4.   Modification of Terms, etc  . . . . . . . . . . . . . . . . . .  9
       3.5.   Instruments   . . . . . . . . . . . . . . . . . . . . . . . . .  9

ARTICLE IV    SPECIAL PROVISIONS CONCERNING RELEASES  . . . . . . . . . . . .  9

       4.1.   Release of Certain Liens  . . . . . . . . . . . . . . . . . . .  9
       4.2.   Release of Collateral   . . . . . . . . . . . . . . . . . . . . 10
</TABLE>





                                      (i)
<PAGE>   114
<TABLE>
<CAPTION>
                                                                             PAGE
                                                                             ----
<S>                                                                           <C>
ARTICLE V     PROVISIONS CONCERNING ALL COLLATERAL  . . . . . . . . . . . . . 10

       5.1.   Protection of Collateral Agent's Security; Insurance  . . . . . 10
       5.2.   Use of Taking Proceeds to Replace or Restore Collateral   . . . 13
       5.3.   Use of Sales Proceeds   . . . . . . . . . . . . . . . . . . . . 13
       5.4.   Warehouse Receipts Non-Negotiable   . . . . . . . . . . . . . . 13
       5.5.   Further Assurances  . . . . . . . . . . . . . . . . . . . . . . 14

ARTICLE VI    REMEDIES UPON OCCURRENCE OF GENERAL EVENT OF DEFAULT  . . . . . 14

       6.1.   Remedies:  Obtaining the Collateral upon Default  . . . . . . . 14
       6.2.   Remedies:  Disposition of the Collateral  . . . . . . . . . . . 15
       6.3.   Waiver of Claims  . . . . . . . . . . . . . . . . . . . . . . . 16
       6.4.   Application of Proceeds   . . . . . . . . . . . . . . . . . . . 17
       6.5.   Remedies Cumulative   . . . . . . . . . . . . . . . . . . . . . 17
       6.6.   Discontinuance of Proceedings   . . . . . . . . . . . . . . . . 17

ARTICLE VII   INDEMNITY   . . . . . . . . . . . . . . . . . . . . . . . . . . 18

       7.1.   Indemnity   . . . . . . . . . . . . . . . . . . . . . . . . . . 18
       7.2.   Indemnity Obligations Secured by Collateral; Survival   . . . . 19

ARTICLE VIII  MISCELLANEOUS   . . . . . . . . . . . . . . . . . . . . . . . . 20

       8.1.   Notices   . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
       8.2.   Waiver; Amendment   . . . . . . . . . . . . . . . . . . . . . . 21
       8.3.   Obligations Absolute  . . . . . . . . . . . . . . . . . . . . . 21
       8.4.   Successors and Assigns  . . . . . . . . . . . . . . . . . . . . 21
       8.5.   Heading Descriptive   . . . . . . . . . . . . . . . . . . . . . 22
       8.6.   Severability  . . . . . . . . . . . . . . . . . . . . . . . . . 22
       8.7.   GOVERNING LAW   . . . . . . . . . . . . . . . . . . . . . . . . 22
       8.8.   Company's Duties  . . . . . . . . . . . . . . . . . . . . . . . 22
       8.9.   Termination; Release  . . . . . . . . . . . . . . . . . . . . . 22
       8.10.  Counterparts  . . . . . . . . . . . . . . . . . . . . . . . . . 23
       8.11.  The Collateral Agent  . . . . . . . . . . . . . . . . . . . . . 23
       8.12.  Issuance of Debt Secured by the Collateral; Designation of
              Additional Parity Debt Agreements   . . . . . . . . . . . . . . 23
</TABLE>





                                      (ii)
<PAGE>   115
APPENDIX A - Definitions

ANNEX A  -  Existing Financing Statements
ANNEX B  -  Inventory and Equipment Locations
ANNEX C  -  Trade and Fictitious Names Used





                                     (iii)
<PAGE>   116
                               SECURITY AGREEMENT

         SECURITY AGREEMENT, dated as of June 28, 1996 (as amended, modified or
supplemented from time to time, this "AGREEMENT"), made by Heritage Holdings,
Inc., a Delaware corporation ("HERITAGE" or the "GENERAL PARTNER," as
appropriate), and Heritage Operating, L.P., a Delaware limited partnership (the
"OPERATING PARTNERSHIP"), as assignors (the "ASSIGNORS"), in favor of
Wilmington Trust Company, as Collateral Agent (the "COLLATERAL AGENT"), for the
benefit of (a) the Noteholders, (b) the  Agents and the other Banks and (c) the
Additional Parity Lenders (collectively, the "SECURED CREDITORS").  Before the
Contribution, Heritage is sometimes referred to herein as the "COMPANY" and on
and after the Contribution, the Operating Partnership is sometimes referred to
herein as the "COMPANY".  All capitalized terms used herein shall have the
respective meanings provided in Appendix A hereto.

                              W I T N E S S E T H

         WHEREAS, the General Partner and the Operating Partnership desire to
enter into the Note Purchase Agreement with the Noteholders;

         WHEREAS, the Operating Partnership desires to enter into the Credit
Agreement with the Banks and the Agents;

         WHEREAS, the Operating Partnership desires to incur Additional Parity
Debt from time to time;

         WHEREAS, the Agents, on behalf of the Banks, the Noteholders and the
Collateral Agent have entered into the Intercreditor Agreement pursuant to
which the Secured Creditors have appointed the Collateral Agent to act for the
Secured Creditors as provided therein;

         WHEREAS, contemporaneously with the purchase by the Noteholders of the
Notes from Heritage pursuant to the Note Purchase Agreement, Heritage will
contribute all of the Assets to the Operating Partnership pursuant to the
Contribution Agreement, and the Operating Partnership will become the owner of
the Assets and will assume all of the Assumed Liabilities, including, without
limitation the Note Obligations.

         WHEREAS, it is a condition precedent to the effectiveness of the Note
Purchase Agreement and to all extensions of credit under the Credit Agreement
that the Company shall have executed and delivered this Agreement to the
Collateral Agent; and

         WHEREAS, Heritage and the Operating Partnership desire to execute this
Agreement to satisfy the conditions described in the preceding paragraph;





                                      -1-
<PAGE>   117
         NOW, THEREFORE, in consideration of the benefits accruing to Heritage
and the Operating Partnership, including, without limitation, the purchase by
the Noteholders of the Notes and the consent of the Noteholders to the
Operating Partnership's assumption of the Note Obligations, the receipt and
sufficiency of which are hereby acknowledged, Heritage and the Operating
Partnership hereby make the following representations and warranties to the
Collateral Agent for the benefit of the Secured Creditors and hereby covenant
and agree with the Collateral Agent for the benefit of the Secured Creditors as
follows:

                                   ARTICLE I

                               SECURITY INTERESTS

         1.1.    Grant of Security Interests.  (a)  As security for the prompt
and complete payment and performance when due of all of the Obligations,
Heritage and the Operating Partnership do hereby pledge, grant, sell, assign
and transfer unto the Collateral Agent for the benefit of the Secured
Creditors, a continuing first priority security interest (subject only to
Permitted Liens) in, all of the right, title and interest of the Company in, to
and under all of the following, whether now existing or hereafter from time to
time acquired (collectively, the "COLLATERAL"):  (i) each and every Receivable,
(ii) all Contracts, together with all Contract Rights arising thereunder, (iii)
all Equipment, (iv) all Inventory, (v) all General Intangibles, (vi) any Cash
Concentration Account established for the Company, as and when required by
Section 2.7, and all monies, securities and instruments deposited or required
to be deposited in such Cash Concentration Account, (vii) all Chattel Paper,
Documents and Instruments, (viii) all of the capital stock of the Company's
Subsidiaries, in accordance with Section 1.1(c), and (ix) all Proceeds and
products of any and all Collateral referred to in clauses (i) through (viii) of
this Section 1.1(a); provided, however, that Collateral shall not include for
any purpose under this Agreement or any other Financing Document any property
subject to a Lien incurred pursuant to clause (i), (vii), (viii) or (xv) (to
the extent clause (xv) applies to clause (i), (vii) or (viii)) of Section 6C of
the Note Purchase Agreement, clause (i), (vii), (viii) or (xv) (to the extent
clause (xv) applies to clause (i), (vii) or (viii)) of Section 7B.3 of the
Credit Agreement and the parallel provisions of any Additional Parity Debt
Agreement, unless the Indebtedness secured by such Lien shall have been paid or
discharged and such Lien is released, at which time such property will become
Collateral if it is of such character that it would be Collateral except for
the presence of such Lien.

         (b) The security interest of the Collateral Agent under this Agreement
extends to all Collateral of the kind which is the subject of this Agreement
which the Company may acquire at any time during the continuation of this
Agreement.





                                      -2-
<PAGE>   118
         (c) With respect to the pledge of all of the capital stock of the
Company's Subsidiaries under Section 1.1(a), such capital stock shall be deemed
to include:  (A) all the shares of such Subsidiaries and the certificates
representing such shares, all dividends, cash, instruments and other property
from time to time received, receivable or otherwise distributed or
distributable in respect of or in exchange for any or all of such shares, (B)
all additional shares of such Subsidiaries acquired in any manner by the
Company, and the certificates representing such additional shares, and all
dividends, cash, instruments and other property from time to time received,
receivable or otherwise distributed or distributable in respect of or in
exchange for any or all of such additional shares, and (C) all books and
records, including, without limitation, correspondence, and other documents and
instruments.  The Company shall deliver to the Collateral Agent all
certificates or instruments representing or evidencing the shares described in
this Section 1.1(c), in suitable form for transfer by delivery or accompanied
by duly executed instruments of transfer or assignment in blank, all
certificates and instruments to be in form and substance satisfactory to the
Collateral Agent.

         1.2.    Power of Attorney.  To the fullest extent permitted by
applicable law, each of Heritage and the Operating Partnership hereby
constitutes and appoints the Collateral Agent its true and lawful attorney-in-
fact, irrevocably, with full power (in the name of the Company or otherwise)
after the occurrence of and during the continuance of any General Event of
Default to act, require, demand, receive, compound and give acquittance for any
and all monies and claims for monies due or to become due to the Company under
or arising out of the Collateral, to endorse any checks or other instruments or
orders in connection therewith and to file any claims or take any action or
institute any proceedings which the Collateral Agent may deem to be necessary
or advisable to protect the interests of the Secured Creditors, which
appointment as attorney is coupled with an interest.

                                   ARTICLE II

               GENERAL REPRESENTATIONS, WARRANTIES AND COVENANTS

         The Company represents, warrants and covenants, which representations,
warranties and covenants shall survive execution and delivery of this
Agreement, as follows:

         2.1.    Necessary Filings; Endorsements. All filings, registrations
and recordings necessary or appropriate to create, preserve, protect and
perfect the security interest granted by the Company to the Collateral Agent
hereby in respect of the Collateral have been accomplished and the security
interest granted to the Collateral Agent pursuant to this Agreement in and to
the Collateral will constitute a first priority





                                      -3-
<PAGE>   119
perfected security interest therein superior and prior to the rights of all
other Persons therein and subject to no other Liens (other than Permitted
Liens) and is entitled to all the rights, priorities and benefits afforded by
the UCC or other relevant law as enacted in any relevant jurisdiction to
perfect such security interest.

         2.2.    No Liens. The Company is, and as to Collateral acquired by it
from time to time after the date hereof the Company will be, the owner of all
Collateral free from any Lien, security interest, encumbrance or other right,
title or interest of any Person (other than Permitted Liens) and the Company
shall defend its Collateral against all claims and demands of all Persons at
any time claiming the same or any interest therein adverse to the Collateral
Agent.

         2.3 Other Financing Statements.  There is no financing statement (or
similar statement or instrument of registration under the law of any
jurisdiction) covering or purporting to cover any interest of any kind in the
Collateral except as disclosed in Annex A hereto, the Company will not execute
or authorize to be filed in any public office any financing statement (or
similar statement or instrument of registration under the law of any
jurisdiction) or statements relating to the Collateral, except financing
statements filed or to be filed in respect of and covering the security
interests granted hereby by the Company and to the extent, if any, required in
connection with any Permitted Lien.

         2.4.    Chief Executive Office; Records.  The chief executive office
of the Company is located at 8801 South Yale Avenue, Suite 310, Tulsa, Oklahoma
74137.  The Company will not move its chief executive office except to such new
location as the Company may establish in accordance with the next to last
sentence of this Section 2.4.  The originals of all documents evidencing all
Receivables and Contract Rights under which Receivables or General Intangibles
arise, of the Company and the only original books of account and records of the
Company relating thereto are, and will continue to be, kept at the chief
executive office and/or one or more locations in one or more Permitted States,
or at such new locations in other states as the Company may establish in
accordance with the next to last sentence of this Section 2.4.  All Receivables
and Contract Rights under which Receivables or General Intangibles arise, of
the Company are, and will continue to be, maintained at, and controlled and
directed (including, without limitation, for general accounting purposes) from
the office location described above and/or one or more locations in one or more
Permitted States, or such new locations in other states as the Company may
establish in accordance with the next to last sentence of this Section 2.4.
The Company shall not establish new locations for such offices in a state that
is not a Permitted State until (i) it shall have given to the Collateral Agent
not less than 15 Business Days' prior written notice of its intention so to do,
clearly describing such new location and providing such other information in
connection





                                      -4-
<PAGE>   120
therewith as the Collateral Agent may reasonably request, (ii) with respect to
such new location, it shall have taken all action necessary to maintain the
security interest of the Collateral Agent in the Collateral intended to be
granted hereby at all times fully perfected and in full force and effect, and
(iii) if requested by the Collateral Agent acting at the instruction of the
Requisite Holders, it shall have furnished an opinion of counsel reasonably
acceptable to the Collateral Agent to the effect that all financing or
continuation statements and amendments or supplements thereto have been filed
in the appropriate filing office or offices with respect to such new locations,
and all other actions with respect to such new locations (including, without
limitation, the payment of all filing fees and taxes, if any, payable in
connection with such filings) have been taken, in order to perfect (and
maintain the perfection and priority of) the security interest granted hereby.
Upon compliance by the Company with the requirements of the preceding sentence
as to a new location, the state in which such new location is situated shall
constitute an additional Permitted State for purposes of this Section 2.4.  In
the event the Company consummates the acquisition of Kingston Propane, Inc. as
contemplated, the Company will not be in default for failure to comply with the
notice provisions contained in this Section 2.4, provided  the Company uses its
best efforts to comply with such notice provisions within a reasonable period
of time.

         2.5.    Location of Inventory and Equipment.  All Inventory and
Equipment held on the date hereof by the Company is located at one of the
locations shown on Annex B hereto or, with respect to propane tanks to be
leased to customers, in one of the Permitted States, or is in transport thereto
under the name of the Company.  The Company agrees that all Inventory and
Equipment now held or subsequently acquired by it shall be kept at (or shall be
in transport to) one of the locations shown on Annex B hereto or, with respect
to propane tanks leased to customers, in (or shall be in transport to) any one
or more of the Permitted States under the name of the Company, or in such other
state or states as the Company may establish in accordance with this Section
2.5. The Company may locate Inventory and Equipment in a state that is not a
Permitted State only if (i) it shall have given to the Collateral Agent not
less than 15 Business Days' prior written notice of its intention so to do,
clearly specifying such new state and providing such other information in
connection therewith as the Collateral Agent may reasonably request, (ii) with
respect to such new state, it shall have taken all action necessary to maintain
the security interest of the Collateral Agent in the Collateral intended to be
granted hereby at all times fully perfected and in full force and effect, and
(iii) if requested by the Collateral Agent acting at the instruction of the
Requisite Holders, it shall have furnished an opinion of counsel reasonably
acceptable to the Collateral Agent to the effect that all financing or
continuation statements and amendments or supplements thereto have been filed
in the appropriate filing office or offices of such new state, and all other
actions (including, without limitation, the payment of all filing fees and
taxes, if any, payable in connection with such filings) have been taken, in
order to perfect (and





                                      -5-
<PAGE>   121
maintain the perfection and priority of) the security interest granted hereby.
Upon compliance by the Company with the requirements of the preceding sentence
as to a new location, the state in which such new location is situated shall
constitute an additional Permitted State for purposes of this Section 2.5.
Notwithstanding the foregoing provisions of this Section, any opinion of
counsel requested by the Collateral Agent as contemplated by this Section 2.5
need not cover priority of the security interest created hereby in respect of
propane tanks either held for lease, or actually leased, to customers in such
new State if the counsel furnishing such opinion shall include therein a
statement (which (i) may be based on an assumed state of facts supplied by the
Operating Partnership reflecting the nature of its operations in such new
State, and (ii) may be explained, but (iii) may not be subject to any
qualification) to the effect that a court sitting in such new State and
applying the law of such new State would, in a properly presented case,
determine that any propane tanks owned by the Operating Partnership and either
held for lease to customers, or actually leased to customers, and located in
such new State, are not fixtures under such law.  In the event the Company
consummates the acquisition of Kingston Propane, Inc. as contemplated,  the
Company will not be in default for failure to comply with the notice provisions
contained in this Section 2.5,  provided the Company uses its best efforts to
comply with such notice provisions within a reasonable period of time.

         2.6.    Trade Names; Change of Name.  The Company does not have or
operate in any jurisdiction under, and in the preceding 12 months has not had
nor operated in any jurisdiction under, any trade names, fictitious names or
other names except its legal name and such other trade or fictitious names as
are listed on Annex C hereto.  The Company shall not change its legal name or
assume or operate in any jurisdiction under any trade, fictitious or other name
except those names listed on Annex C hereto and new names as to which it shall
have given to the Collateral Agent not less than 15 days' prior written notice
(or 30 days' prior written notice in the case of a change of its legal name) of
its intention so to do, clearly describing such new name and the jurisdictions
in which such new name shall be used and providing such other information in
connection therewith as the Collateral Agent may reasonably request.   In the
event the Company consummates the acquisition of Kingston Propane, Inc. as
contemplated,  the Company will not be in default for failure to comply with
the notice provisions contained in this Section 2.6,  provided the Company uses
its best efforts to comply with such notice provisions within a reasonable
period of time.

         2.7.    Establishment of Cash Concentration Account.  The Collateral
Agent shall establish in its own name and for the benefit of the Secured
Creditors, at the Collateral Agent's office located in Wilmington, Delaware a
cash concentration account (such account, the "CASH CONCENTRATION ACCOUNT").
Except as otherwise provided in this Agreement, the Cash Concentration Account
shall be under the sole dominion and





                                      -6-
<PAGE>   122
control of the Collateral Agent and the Collateral Agent shall have the sole
right to make withdrawals from the Cash Concentration Account and to exercise
all rights with respect to the Collateral from time to time therein.  All
amounts delivered to or held by or on behalf of the Collateral Agent pursuant
hereto shall be held in the Cash Concentration Account, and shall constitute
Collateral in accordance with the provisions hereof.

         2.8.    Cash Management System; Deposits to the Cash Concentration
Account. (a) Upon the occurrence of any General Event of Default, the Company
shall establish a cash management system whereby on a daily basis, and, at the
end of each Business Day, all cash and/or other collected funds held in any
other depository and disbursement accounts of the Company are transferred by
wire to the Cash Concentration Account, and the Company shall maintain its
local disbursement accounts on a zero "book balance" basis.

         (b) Upon the occurrence and continuance of any General Event of
Default, all cash, checks, drafts, securities, certificates and instruments
received by the Company and deposited into the local depository accounts and
disbursement accounts shall be held by the Company therein in a constructive
trust for the benefit of the Collateral Agent hereunder.

         2.9.    Investment of Funds Deposited in the Cash Concentration
Account.  To the extent that the Collateral has not previously been applied
pursuant to Article V hereof, the Collateral Agent shall, unless otherwise
directed by the Requisite Holders, from time to time invest funds on deposit in
the Cash Concentration Account in Cash Equivalents or such other investments in
cash equivalents as required by the Company (so long as no General Event of
Default is continuing) and acceptable to the Collateral Agent in its sole
discretion (collectively, the "PERMITTED INVESTMENTS").  All Permitted
Investments made pursuant to this Section 2.9 (and any instruments evidencing
same), and all Proceeds thereof, shall be held in the Cash Concentration
Account as part of the Collateral.  All such investments shall be made in the
name of the Collateral Agent.  Permitted Investments made pursuant to this
Section 2.9 shall be for the account, benefit and risk of the Company.

         2.10.   Withdrawals and Applications from the Cash Concentration
Account.  The Collateral Agent shall have the sole right to make withdrawals
from time to time from the Cash Concentration Account and liquidate any
Permitted Investments, and Collateral shall remain in the Cash Concentration
Account until (x) such Collateral is applied as provided by Article V hereof,
(y) there no longer exists a General Default or Event of Default, or (z) such
Collateral is released as provided in Section 8.9 hereof.





                                      -7-
<PAGE>   123
         2.11.   Recourse.  This Agreement is made with full recourse to the
Company and pursuant to and upon all the warranties, representations,
covenants, and agreements on the part of the Company contained herein, in the
other Security Documents, in the Note Purchase Agreement, in the Notes, in the
Credit Agreement, in the Bank Notes, in the Additional Parity Debt Agreements,
in the Additional Parity Debt and otherwise in writing in connection herewith
or therewith.

                                  ARTICLE III

                         SPECIAL PROVISIONS CONCERNING
                   RECEIVABLES; CONTRACT RIGHTS; INSTRUMENTS

         3.1.    Additional Representations and Warranties.  The Company will
not record any Receivable that it knows to be invalid or fraudulent in its
books and records.  All Receivables will evidence the indebtedness of account
debtors arising out of the sale or lease of Inventory by the Company or the
performance of services by the Company.  The books, records and documents
maintained by the Company will be the only original writings evidencing and
embodying such Receivables and the obligation of the account debtor named
therein (other than copies created for general accounting purposes).

         3.2.    Maintenance of Records.  The Company will keep and maintain,
at its own cost and expense, satisfactory and complete records of its
Receivables and Contracts, including, but not limited to, the originals of all
documentation (including each Contract) with respect thereto, records of all
payments received, all credits granted thereon, and all other dealings
therewith, and the Company will make the same available to the Collateral Agent
at the locations where such documentation and records are maintained for
inspection, at the Company's own cost and expense, at any and all reasonable
times upon demand if a General Event of Default has occurred and is continuing
and, if no such General Event of Default has occurred upon not less than five
(5) Business Days prior written notice; provided, however, unless there shall
have occurred and be continuing one or more General Events of Default, the
Collateral Agent shall not make such a request more often than twice during
each twelve month period.  At any time that there shall have occurred and be
continuing a General Event of Default, upon the request of the Collateral
Agent, the Company shall, at its own cost and expense, deliver all tangible
evidence of its Receivables and Contract Rights (including, without limitation,
copies of all documents evidencing the Receivables and all Contracts, such
copies, if requested by the Collateral Agent, to be certified as true and
complete by an appropriate officer of the Company) and such books and records
to the Collateral Agent or to its representatives (copies of which evidence and
books and records may be retained by the Company).





                                      -8-
<PAGE>   124
         3.3.    Direction to Account Debtors; Contracting Parties; etc.  In
the event that there shall have occurred and be continuing (i) a Bankruptcy
Event, or (ii) any other General Event of Default, but in the case of this
clause (ii) only to the extent the Collateral Agent (acting at the direction of
the Requisite Holders) has so notified the Company, the Company agrees, to the
extent permitted by law, (a) to cause all payments on account of the
Receivables and Contracts to be made directly to the Cash Concentration
Account, and (b) that the Collateral Agent may, at its option, directly notify
the obligors with respect to any Receivables and/or under any Contracts to make
payments with respect thereto as provided in the preceding clause (a).  In such
event, without notice to or assent by the Company, the Collateral Agent may
apply any or all amounts then in, or thereafter deposited in, the Cash
Concentration Account in the manner provided in Section 6.4 of this Agreement.
The costs and expenses (including reasonable attorneys' fees) of collection,
whether incurred by the Company or the Collateral Agent, shall be borne by the
Company.

         3.4.    Modification of Terms, etc.  The Company shall not rescind or
cancel any indebtedness evidenced by any Receivable or under any Contract, or
modify any material term thereof or make any material adjustment with respect
thereto, or extend or renew the same, or compromise or settle any material
dispute, claim, suit or legal proceeding relating thereto, except, in each
case, in the ordinary course of business.  The Company shall not sell or
otherwise dispose of any Receivables, except to the extent permitted in the
Note Purchase Agreement and the Credit Agreement.  The Company will use its
best efforts to fulfill all obligations on its part to be fulfilled under or in
connection with the Receivables and Contracts and will do nothing to impair the
rights of the Collateral Agent in the Receivables or Contracts.

         3.5.    Instruments.  If the Company owns or acquires any Instrument
constituting Collateral and representing Indebtedness in an aggregate principal
amount of more than $25,000 and such Instrument is not otherwise pledged under
another Security Document, the Company will within sixty (60) days notify the
Collateral Agent thereof, and upon request by the Collateral Agent promptly
deliver such Instrument to the Collateral Agent appropriately endorsed to the
order of the Collateral Agent as further security hereunder.

                                   ARTICLE IV

                     SPECIAL PROVISIONS CONCERNING RELEASES

         4.1.    Release of Certain Liens.  Upon the repayment in full of any
indebtedness secured by a Lien permitted pursuant to clause (i), (vii), (viii)
or (xv) (to the





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<PAGE>   125
extent such clause (xv) applies to clause (i), (vii) or (viii)) of Section 6C
of the Note Purchase Agreement, clause (i), (vii), (viii) or (xv) (to the
extent such clause (xv) applies to clause (i), (vii) or (viii)) of Section 7B.3
of the Credit Agreement and the parallel provisions of any Additional Parity
Debt Agreement, to the extent such Lien covers an asset of such character that
it would constitute Collateral except for the presence of such Lien, the
Company shall promptly take such action as shall be required to procure the
release of such Lien and upon such release, such asset shall automatically
become Collateral subject to the Lien of this Agreement.

         4.2.    Release of Collateral.  Upon the sale of any asset
constituting Collateral, pursuant to Section 6G or Section 6L of the Note
Purchase Agreement, Section 7B.12 of the Credit Agreement and the parallel
provision of any Additional Parity Debt Agreement, the Collateral Agent shall
promptly take such action as shall be requested by the Company to procure the
release of the Lien hereunder with respect to such Collateral.

                                   ARTICLE V

                      PROVISIONS CONCERNING ALL COLLATERAL

         5.1.    Protection of Collateral Agent's Security; Insurance. (a) The
Company will do nothing to impair the rights of the Collateral Agent in the
Collateral.  The Company will at all times keep the Inventory and Equipment
insured in conformity with this Section 5.1 at the Company's own expense. All
policies (or certificates with respect to such insurance) shall be deposited
with the Collateral Agent.  If the Company shall fail to insure the Inventory
and Equipment in accordance with the preceding sentence, or if the Company
shall fail to so deposit all policies (or certificates with respect thereto),
the Collateral Agent shall have the right (but shall be under no obligation)
upon not less than five (5) Business Days' prior written notice to the Company
to procure such insurance and the Company agrees to reimburse the Collateral
Agent for all costs and expenses of procuring such insurance.  In the event
that any General Event of Default shall have occurred and be continuing, the
Collateral Agent may apply any proceeds of such insurance in accordance with
Section 6.4 hereof.  The Company assumes all liability and responsibility in
connection with the Collateral acquired by it and the liability of the Company
to pay its Obligations shall in no way be affected or diminished by reason of
the fact that such Collateral may be lost, destroyed, stolen, damaged or for
any reason whatsoever unavailable to the Company.

         (b) The Company will, at its expense, at all times provide and
maintain for the mutual benefit of the Company and the Collateral Agent in such
manner, against such risks and to such extent as may from time to time be
reasonably required by the Collateral





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<PAGE>   126
Agent (i) "all risk" property insurance, including sprinkler leakage,
vandalism, malicious mischief, hail, windstorm, explosion, damage from aircraft
or vehicles, demolition, smoke damage in an amount sufficient to prevent the
Collateral Agent or any Secured Creditor or the Company or any of its
Subsidiaries from becoming a co-insurer of any loss under the terms of the
policy but in no event less than the then full replacement value of each fixed
Asset or the full replacement value of the aggregate value of all of the
insured assets without depreciation (a replacement cost endorsement and an
agreed amount clause shall be attached to the policy, and the agreed amount
clause shall be renewed annually); (ii) comprehensive general liability
insurance with an aggregate limit of not less than $45,000,000 (or such higher
amount as the Collateral Agent may from time to time reasonably require)
combined single limit for bodily injury and property damage; such insurance
shall include personal injury liability insurance and shall be on a per
occurrence basis; and (iii) such other insurance as may from time to time be
reasonably required by the Collateral Agent in order to protect its interests;
provided, however, that a program of self-insurance maintained by the Company
as to damage to property and/or other insurable risks shall comply with the
requirements of this Section 5.1 so long as adequate reserves in connection
with such self-insurance program are taken and maintained in accordance with
GAAP and such program is otherwise reasonably satisfactory to Secured Creditors
and the Collateral Agent:

         (c) Each policy of insurance maintained by the Company pursuant to
this Section 5.1 shall (i) name the Collateral Agent and the Secured Creditors
as additional insureds, as their respective interests may appear with respect
to liability insurance coverage; (ii) contain the standard non-contributory
mortgagee clause endorsement in favor of the Collateral Agent with respect to
hazard insurance coverage; (iii) name the Collateral Agent as a co-loss payee;
(iv) include, to the extent obtainable on commercially reasonable terms,
effective waivers by the insurer of all rights of subrogation against any named
insured; (v) provide that any losses shall be payable notwithstanding (A) any
act, failure to act, negligence of, or violation or breach of warranties,
declarations or conditions contained in such policy by the Company or the
Collateral Agent or any other named insured or loss payee, (B) any foreclosure
or other proceeding or notice of sale relating to the insured Collateral or (C)
any change in the title to or ownership or possession of any of the insured
Collateral; (vi) provide that if all or any part of such policy is canceled,
terminated or expires, the insurer will forthwith give notice thereof to each
named insured and loss payee and that no cancellation, termination, expiration
or reduction in amount or material change in coverage thereof shall be
effective until at least thirty (30) days after receipt by each named insured
and loss payee of written notice thereof; and (vii) be on terms reasonably
satisfactory to the Collateral Agent in all other respects.

         (d) The Company shall pay as and when the same become due and payable
the premiums for all insurance policies that the Company is required to
maintain





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<PAGE>   127
hereunder, and all such policies shall be non-assessable and contain such
expiration dates as the Collateral Agent may require.  The Company will deliver
to the Collateral Agent concurrently herewith original certificates setting
forth in reasonable detail the terms (including without limitation any
applicable notice requirements) of all insurance policies that the Company
maintains hereunder.

         (e) Not later than thirty (30) days or (fifteen (15) days in the case
of any insurance policy expiring within 75 days from the date of the Closing)
prior to the expiration, termination or cancellation of any insurance policy
which the Company is required to maintain hereunder, the Company shall obtain a
replacement policy or policies (or a binding commitment for such replacement
policy or policies) together with receipt for the payment the deposit premium
thereon, which shall be effective no later than the date of the expiration,
termination or cancellation of the previous policy.

         (f) All insurers shall be authorized to issue insurance in the state
in which the covered Assets are located.  In the case of the first $5,000,000
of coverage provided under any policy of commercial general liability or "all
risk" property insurance, all insurers and reinsurers shall have the A.M. Best
rating of "A-" or better and a financial rating of VI or better in the current
edition of Best Insurance Reports.  All other insurers and reinsurers shall
have the A.M. Best rating of "A" or better and a financial size rating of XI in
the current edition of Best Insurance Reports or such other ratings as shall be
acceptable to the Collateral Agent in its sole discretion.  Upon the
downgrading of any existing insurer below the ratings provided for herein, the
Company shall obtain replacement insurance with one or more qualified insurers
not later than sixty (60) days after such downgrading.

         (g) The Company has, on or prior to date of the Closing, delivered to
the Collateral Agent and will deliver to the Collateral Agent promptly upon
request of the Collateral Agent, and in any event on December 31 of each
calendar year, commencing with December 31, 1996, a report by a firm of
independent insurance brokers or consultants chosen by the Company and
satisfactory to the Collateral Agent (x) setting forth the insurance obtained
pursuant to this Section 5.1 including without limitation the amounts thereof,
the names of the insurers and the property, hazards and risks covered thereby,
and certifying that the same comply with the requirements of this Section 5.1,
that all premiums then due thereon have been paid and that the same are in full
force and effect, (y) setting forth all self-insurance maintained by the
Company pursuant to this Section 5.1 and (z) certifying that in the opinion of
such firm, such insurance or self-insurance complies with the requirements of
this Section 5.1 and is, as to amounts, coverage and provisions, adequate to
protect the Company, the Collateral Agent and each Secured Creditor against any
and all insurable risks affecting the Inventory and Equipment, or setting forth
any recommendations of such independent insurance brokers or consultants as to
additional insurance, if any, reasonably required for the protection of





                                      -12-
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the interest of the Collateral Agent and each Secured Creditor in the light of
available insurance coverage and practice in the Business.  The Collateral
Agent shall be entitled to rely on such reports without further investigation
of the facts and circumstances set forth therein.

         (h) The Company will not take out separate insurance concurrent in
form or contributing in the event of loss with that required to be maintained
pursuant to this Section 5.1.

         5.2.    Use of Taking Proceeds to Replace or Restore Collateral.  Upon
a casualty, damage, destruction or a taking by eminent domain of all or any
portion of the Inventory or Equipment, the Company may elect, as evidenced by
an Officers' Certificate delivered to the Collateral Agent within one hundred
eighty (180) days thereof, whether or not to replace or restore such Inventory
or Equipment, or portion thereof.  Such Officers' Certificate shall contain a
calculation of Unutilized Taking Proceeds and a calculation of Excess Proceeds,
if applicable.  In the event the Company shall elect not to restore, or shall
fail to make any election within said one hundred eighty (180) day period, all
proceeds from such casualty, damage, destruction or such taking by eminent
domain constituting Excess Taking Proceeds shall be paid to the Collateral
Agent for deposit to the Cash Concentration Account and, together with any
interest earned thereon, shall be applied as provided in Section 4(a) of the
Intercreditor Agreement.

         5.3.    Use of Sales Proceeds.  Upon a sale, lease, abandonment or
other disposition of any of the Collateral, constituting an "Asset Sale"
defined and permitted pursuant to Section 6Giii of the Note Purchase Agreement,
Section 7B.7 of the Credit Agreement and the parallel provision of any
Additional Parity Debt Agreement, the Company shall deliver to the Collateral
Agent, within one hundred eighty (180) days thereof, an Officers' Certificate
setting forth a calculation of Excess Sales Proceeds, if any, derived
therefrom.  All such Excess Sales Proceeds shall be paid to the Collateral
Agent for deposit to the Cash Concentration Account and, together with any
interest earned thereon, shall be applied as provided in Section 4(b) of the
Intercreditor Agreement.

         5.4.    Warehouse Receipts Non-Negotiable.  The Company agrees that if
any warehouse receipt or receipt in the nature of a warehouse receipt is issued
with respect to any of its Inventory, the Company will use its best efforts to
assure that such warehouse receipt or receipt in the nature thereof shall not
be "negotiable" (as such term is used in Section 7-104 of the Uniform
Commercial Code as in effect in any relevant jurisdiction or under other
relevant law).





                                      -13-
<PAGE>   129
         5.5.    Further Assurances.  The Company agrees to execute and deliver
to the Collateral Agent such financing statements or certificates of title, as
necessary, or as the Collateral Agent may, from time to time, reasonably
request or as are necessary or desirable in the opinion of the Collateral Agent
to establish and maintain a valid, enforceable, security interest in the
Collateral, as provided herein, subject only to Permitted Liens, and the other
rights and security contemplated hereby all in accordance with the Uniform
Commercial Code as enacted in any and all relevant jurisdictions or any other
relevant law.  The Company will pay any applicable filing fees and related
expenses.  The Company authorizes the Collateral Agent to file any such
financing statements without the signature of the Company where permitted by
law.  The Company further agrees to, at any time and from time to time, at its
own expense, promptly execute and deliver all further agreements, instruments
and other documents and take all further action (including the execution and
delivery of continuation statements) that may be necessary or that the
Collateral Agent may reasonably request in order to perfect, preserve or and
protect the security interest purported to be created hereby or otherwise to
enable the Collateral Agent to exercise and enforce its rights and remedies
hereunder.

                                   ARTICLE VI

              REMEDIES UPON OCCURRENCE OF GENERAL EVENT OF DEFAULT

         6.1.    Remedies:  Obtaining the Collateral upon Default.  The Company
agrees that, in the event that any General Event of Default shall have occurred
and be continuing, the Collateral Agent, in addition to any rights now or
hereafter existing under applicable law, shall have all rights as a secured
creditor under the Uniform Commercial Code in all relevant jurisdictions and
may also:

         (a) personally, or by agents or attorneys, immediately take possession
of the Collateral or any part thereof, from the Company or any other Person who
then has possession of any part thereof in accordance with the UCC and other
applicable law, and for that purpose may enter upon the Company premises where
any of the Collateral is located and remove the same and use in connection with
such removal any and all services, supplies, aids and other facilities of the
Company; and

         (b) instruct the obligor or obligors on any agreement, instrument or
other obligation (including, without limitation, the Receivables and the
Contracts) constituting the Collateral to make any payment required by the
terms of such agreement, instrument or other obligation directly to the
Collateral Agent and may exercise any and all remedies of the Company in
respect of such Collateral; and





                                      -14-
<PAGE>   130
         (c) withdraw all monies, securities and instruments in the Cash
Concentration Account and liquidate any or all Permitted Investments for
application to the obligations in accordance with Section 6.4 hereof; and

         (d) subject to Section 6.2, sell, assign or otherwise liquidate, or
direct the Company to sell, assign or otherwise liquidate, any or all of the
Collateral or any part thereof, and take possession of the proceeds of any such
sale, assignment or liquidation; and

         (e) take possession of the Collateral or any part thereof, by
directing the Company in writing to deliver the same to the Collateral Agent at
any place or places designated by the Collateral Agent, in which event the
Company shall at its own expense:

             (i) forthwith cause the same to be moved to the place or places so
         designated by the Collateral Agent and there delivered to the
         Collateral Agent,

             (ii)    store and keep any Collateral so delivered to the
         Collateral Agent at such place or places pending further action by the
         Collateral Agent as provided in Section 6.2 hereof, and

             (iii)   while the Collateral shall be so stored and kept, provide
         such guards and maintenance services as shall be necessary to protect
         the same and to preserve and maintain them in good condition.

         6.2.    Remedies:  Disposition of the Collateral.  Any Collateral may
be sold, assigned, leased or otherwise disposed of by or on behalf of the
Collateral Agent under one or more contracts or as an entirety, and without the
necessity of gathering at the place of sale, the property to be sold, and in
general in such manner, at such time or times, at such place or places and on
such basis as may, in compliance with any mandatory requirements of applicable
law, be commercially reasonable.  Any of the Collateral may be sold, leased or
otherwise disposed of by or on behalf of the Collateral Agent, in the condition
in which the same existed when taken by the Collateral Agent or after any
overhaul or repair which the Collateral Agent shall determine to be
commercially reasonable.  Any such disposition, which shall be a private sale
or other disposition permitted by such requirements, shall be made upon not
less than ten (10) Business Days' written notice to the Company specifying the
time after which such disposition may be made (and which the Company hereby
acknowledges to be commercially reasonable notice).  Any such disposition which
shall be a public sale permitted by such requirements shall be made upon not
less than ten (10) Business Days' written notice to the Company (and which the
Company hereby acknowledges to be commercially reasonable notice), specifying
the time and place of such sale and, in the absence of





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<PAGE>   131
applicable requirements of law, shall be by public auction (which may, at the
Collateral Agent's option, be subject to reserve), after publication of notice
of such auction not less than ten (10) Business Days prior thereto in two
newspapers of general circulation in the City of New York.  To the extent
permitted by any such requirement of law, the Collateral Agent may bid for and
become the purchaser of the Collateral or any item thereof, offered for sale in
accordance with this Section 6.2  without accountability to the Company (except
to the extent of surplus money received as provided in Section 6.4 hereof).
The Company agrees to do or cause to be done all such other acts and things as
may be reasonably necessary to make such sale or sales of all or any portion of
the Collateral valid and binding and in compliance with any and all applicable
laws, regulations, orders, writing, injunctions, decrees or awards of any and
all courts, arbitrators or governmental instrumentalities having jurisdiction
over any such sale or sales, all at the Company's expense.

         6.3.    Waiver of Claims.  Except as otherwise provided in this
Agreement, THE COMPANY WAIVES, TO THE EXTENT PERMITTED BY APPLICABLE LAW,
NOTICE AND JUDICIAL HEARING IN CONNECTION WITH THE COLLATERAL AGENT'S TAKING
POSSESSION OR THE COLLATERAL AGENT'S DISPOSITION OF ANY OF THE COLLATERAL,
INCLUDING, WITHOUT LIMITATION, ANY AND ALL PRIOR NOTICE AND HEARING FOR ANY
PREJUDGMENT REMEDY OR REMEDIES AND ANY SUCH RIGHT WHICH THE COMPANY WOULD
OTHERWISE HAVE UNDER THE CONSTITUTION OR ANY STATUTE OF THE UNITED STATES OR OF
ANY STATE, and the Company hereby further waives, to the extent permitted by
law:

         (a) all damages occasioned by such taking of possession except any
damages which are the direct result of the Collateral Agent's gross negligence
or willful misconduct;

         (b) all other requirements as to the time, place and terms of sale or
other requirements with respect to the enforcement of the Collateral Agent's
rights hereunder; and

         (c) all rights of redemption, appraisement, valuation, stay, extension
or moratorium now or hereafter in force under any applicable law in order to
prevent or delay the enforcement of this Agreement or the absolute sale of the
Collateral or any portion thereof.

Any sale of, or the grant of options to purchase, or any other realization
upon, any Collateral shall operate to divest all right, title, interest, claim
and demand, either at law or in equity, of the Company therein and thereto, and
shall be a perpetual bar both at law and in equity against the Company and
against any and all Persons claiming or attempting





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to claim the Collateral so sold, optioned or realized upon, or any part
thereof, from, through and under the Company.

         6.4.    Application of Proceeds.  The proceeds of any Collateral
obtained pursuant to Section 6.1 or disposed of pursuant to Section 6.2 and all
other moneys collected by the Collateral Agent hereunder shall be applied in
the manner provided in Section 4 of the Intercreditor Agreement.

         6.5.    Remedies Cumulative.  Each and every right, power and remedy
hereby specifically given to the Collateral Agent shall be in addition to every
other right, power and remedy specifically given under this Agreement, the
Intercreditor Agreement, the other Security Documents, the Note Purchase
Agreement, the Notes, the Credit Agreement, the Bank Notes or the Additional
Parity Debt Agreements or now or hereafter existing at law or in equity, or by
statute and each and every right, power and remedy whether specifically herein
given or otherwise existing may be exercised from time to time or
simultaneously and as often and in such order as may be deemed expedient by the
Collateral Agent.  All such rights, powers and remedies shall be cumulative and
the exercise or the beginning of exercise of one shall not be deemed a waiver
of the right to exercise of any other or others.  No delay or omission of the
Collateral Agent or any Secured Creditor in the exercise of any such right,
power or remedy, nor any course of dealing between the Company and the
Collateral Agent or any Secured Creditor, nor any renewal or extension of any
of the Obligations shall impair any such right, power or remedy or shall be
construed to be a waiver of any General Default or General Event of Default or
an acquiescence therein.  No notice to or demand on the Company in any case
shall entitle the Company to any other or further notice or demand in similar
or other circumstances or constitute a waiver of the rights of the Collateral
Agent to any other further action in any circumstances without notice or
demand.  In the event that the Collateral Agent shall bring any suit to enforce
any of its rights hereunder and shall be entitled to judgment, then in such
suit the Collateral Agent may recover reasonable expenses, including attorneys'
fees, and the amounts thereof shall be included in such judgment.

         6.6.    Discontinuance of Proceedings.  In case the Collateral Agent
shall have instituted any proceeding to enforce any right, power or remedy
under this Agreement by foreclosure, sale, entry or otherwise, and such
proceeding shall have been discontinued or abandoned for any reason then, and
in every such case, the Company, the Collateral Agent and each holder of any of
the Obligations shall be restored to their former positions and rights
hereunder with respect to the Collateral subject to the security interest
created under this Agreement, and all rights, remedies and powers of the
Collateral Agent shall continue as if no such proceeding had been instituted.





                                      -17-
<PAGE>   133
                                  ARTICLE VII

                                   INDEMNITY

         7.1.    Indemnity.  (a) The Company agrees to pay, indemnify,
reimburse and hold the Collateral Agent, each Secured Creditor and their
respective successors, assigns, employees, agents and servants (hereinafter in
this Section 7.1 referred to individually as "INDEMNITEE," and collectively as
"INDEMNITEES") harmless from any and all liabilities, obligations, losses,
damages, injuries, penalties, claims, demands, actions, suits, judgments and
any and all costs and expenses or disbursements (including reasonable
attorneys' fees and expenses) (for the purposes of this Section 7.1 the
foregoing are collectively called "Losses") of whatever kind and nature with
respect to the execution, delivery, enforcement, performance and administration
of, or imposed on, asserted against or incurred by any of the Indemnitees in
any way relating to or arising out of, this Agreement, any other Security
Document, the Intercreditor Agreement, the Note Purchase Agreement, any Note,
the Credit Agreement, any Bank Note, any Additional Parity Debt Agreement or
any other document executed in connection herewith or therewith or in any other
way connected with the administration of the transactions contemplated hereby
or thereby or the enforcement of any of the terms of, or the preservation of
any rights under any thereof, or in any way relating to or arising out of the
manufacture, ownership, ordering, purchase, delivery, control, acceptance,
lease, financing, possession, operation, condition, sale, return or other
disposition or use of the Collateral (including, without limitation, latent or
other defects, whether or not discoverable, the violation of the laws of any
country, state or other governmental body or unit, any tort (including, without
limitation, claims arising or imposed under the doctrine of strict liability,
or for or on account of injury to or the death of any Person (including any
Indemnitee), or property damage), or contract claim); provided that the
Collateral Agent shall not be indemnified for Losses arising from the
Collateral Agent's gross negligence or willful misconduct, and no Indemnitee
shall be indemnified pursuant to this Section 7.1(a) for Losses to the extent
caused by the gross negligence or willful misconduct of such Indemnitee or any
Losses resulting from the failure of such Indemnitee to comply with applicable
law.  The Company agrees that upon written notice by any Indemnitee of the
assertion of such a liability, obligation, damage, injury, penalty, claim,
demand, action, judgment or suit, the Company shall assume full responsibility
for the defense thereof.  Each Indemnitee agrees to use its best efforts
promptly to notify the Company of any such assertion of which such Indemnitee
has knowledge.

         (b) Without limiting the application of Section 7.1(a) above, the
Company agrees to pay to the Collateral Agent, as compensation for the
Collateral Agent's services hereunder and under the other Security Documents
and the Intercreditor Agreement, such fee as shall be agreed to in writing from
time to time between the Company and the





                                      -18-
<PAGE>   134
Collateral Agent, and from time to time, upon demand, all of the reasonable
fees, costs and expenses of the Collateral Agent (including, without
limitation, the reasonable fees and expenses of its counsel) (i) arising in
connection with the preparation, execution, delivery, modification,
restatement, amendment or termination of this Agreement and each other Security
Document and the Intercreditor Agreement or the enforcement (whether in the
context of a civil action, adversary proceeding, workout or otherwise) of any
of the provisions hereof or thereof; or (ii) incurred or required to be
advanced in connection with the administration of the Collateral, the sale or
other disposition or the custody, preservation or protection of the Collateral
pursuant to any Security Document and the exercise or enforcement of the
Collateral Agent's rights under this Agreement and in and to the Collateral.

         (c) Without limiting the application of Section 7.1(a) or (b) above,
the Company agrees to pay, indemnify and hold each Indemnitee harmless from and
against any Losses which such Indemnitee may suffer, expend or incur in
consequence of, or growing out of, any material misrepresentation by the
Company in this Agreement, any other Security Document, the Note Purchase
Agreement, any Note, the Credit Agreement, any Bank Note, any Parity Debt
Agreement or in any writing contemplated by, or made or delivered pursuant to,
or in connection with, any of the foregoing.

         (d) In any suit, proceeding or action brought by the Collateral Agent
under or with respect to the Collateral, or any of the Security Documents or
the Intercreditor Agreement, for any sum owing thereunder or hereunder or to
enforce any provisions thereof or hereof, the Company agrees to save, indemnify
and keep the Collateral Agent harmless from and against all reasonable expense
and any loss or damage suffered by reason of any defense, setoff, counterclaim,
recoupment or reduction of liability whatsoever of the obligor thereunder or
hereunder, arising out of a breach by the Company or any of its affiliates of
its respective obligations hereunder or arising out of any other agreement,
indebtedness or liability at any time owing to or in favor of any obligee or
its successors from the Company or any of its affiliates, and all such
obligations of the Company or any of its affiliates shall be and remain
enforceable against and only against the Company or its affiliates and shall
not be enforceable against the Collateral Agent.

         (e) If and to the extent that the obligations of the Company under
this Section 7.1 are unenforceable for any reason, the Company hereby agrees to
make the maximum contribution to the payment and satisfaction of such
obligations which is permissible under applicable law.

         7.2.    Indemnity Obligations Secured by Collateral; Survival.  Any
amounts as to which an Indemnitee has the right to payment shall constitute
Obligations secured by the Collateral.





                                      -19-
<PAGE>   135
         The indemnity obligations of the Company contained in this Article VII
shall continue in full force and effect notwithstanding the full payment of all
the Obligations and notwithstanding the discharge thereof; provided, however,
that after payment in full of the Obligations such indemnity obligations shall
be unsecured.

                                  ARTICLE VIII

                                 MISCELLANEOUS

         8.1.    Notices.  Except as otherwise specified herein, all notices,
requests, demands or other communications to or upon the respective parties
hereto shall be in writing and shall be delivered by hand, by express courier
service, by registered or certified mail, return receipt requested, postage
prepaid, by first-class mail or by telecopy (confirmed by one of the other
methods of delivery described herein), and shall be addressed to the party to
which such notice, request, demand or other communication is required or
permitted to be given or made under this Agreement, as follows:

         (a) if to the Company, at:

             Heritage Holdings, Inc.
             or
             Heritage Operating, L.P.
             8801 South Yale Avenue, Suite 310
             Tulsa, Oklahoma   74137

             Attention:  H. Michael Krimbill, Chief Financial Officer

         (b) if to the Collateral Agent, at:

             Wilmington Trust Company
             Rodney Square North
             1100 North Market Street
             Wilmington, DE  19890-0001

             Attention:  Corporate Trust Administration

         (c) if to any Noteholder, at such address as such Noteholder shall
have specified in the Note Purchase Agreement;

         (d) if to the Agents, at such addresses as the Agents shall have
specified in the Credit Agreement; and





                                      -20-
<PAGE>   136
         (e) if to any Bank, at such address as such Bank shall have specified
in the Credit Agreement;

or at such other address as shall have been furnished in writing by any Person
described above to the party required to give notice hereunder.  Any notice so
addressed and mailed or delivered shall be deemed to be given (1) one Business
Day after being addressed by express courier service, (2) three Business Days
after being mailed by registered, certified or first-class mail, (3) on the
same Business Day, if by hand, and (4) when received, if by telecopy.

         8.2.    Waiver; Amendment.  None of the terms and conditions of this
Agreement may be changed, waived, modified or varied in any manner whatsoever
except in accordance with the provisions of Section 8 of the Intercreditor
Agreement.

         8.3.    Obligations Absolute.  To the extent permitted by law, the
obligations of the Company hereunder shall remain in full force and effect
without regard to, and shall not be impaired by (a) any bankruptcy, insolvency,
reorganization, arrangement, readjustment, composition, liquidation or the like
of the Company; (b) any exercise or non-exercise, or any waiver of, any right,
remedy, power or privilege under or in respect of this Agreement, any other
Security Document, the Note Purchase Agreement, any Note, the Credit Agreement,
any Bank Note or any Additional Parity Debt Agreement except as specifically
set forth in a waiver granted pursuant to Section 8.2 hereof; or (c) any
amendment to or modification of any Security Document, the Note Purchase
Agreement, any Note, the Credit Agreement, any Bank Note or any Additional
Parity Debt Agreement or any security for any of the Obligations; whether or
not the Company shall have notice or knowledge of any of the foregoing.

         8.4.    Successors and Assigns.  This Agreement shall be binding upon
the Company and its successors and assigns and shall inure to the benefit of
the Collateral Agent and each Secured Creditor and their respective successors
and assigns; provided that the Company may not transfer or assign any or all of
its rights or obligations hereunder.  All agreements, statements,
representations and warranties made by the Company herein or in any certificate
or other instrument delivered by the Company or on its behalf under this
Agreement shall be considered to have been relied upon by the Collateral Agent
and the Secured Creditors and shall survive the execution and delivery of this
Agreement, the other Security Documents, the Note Purchase Agreement, the
Notes, the Credit Debt Agreement, any Bank Note or any Additional Parity Debt
Agreement regardless of any investigation made by the Collateral Agent or the
Secured Creditors or on their behalf.





                                      -21-
<PAGE>   137
         8.5.    Heading Descriptive.  The headings of the several sections of
this Agreement are inserted for convenience only and shall not in any way
affect the meaning or construction of any provision of this Agreement.

         8.6.    Severability.  Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

         8.7.    GOVERNING LAW.  THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS
OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED
BY THE LAWS OF THE STATE OF NEW YORK, TO THE EXTENT PERMITTED BY LAW WITHOUT
REFERENCE TO ITS CONFLICTS OF LAW PRINCIPLES.

         8.8.    Company's Duties.  It is expressly agreed, anything herein
contained to the contrary notwithstanding, that the Company shall remain liable
to perform all of the obligations, if any, assumed by it with respect to the
Collateral and the Collateral Agent shall not have any obligations or
liabilities with respect to any Collateral by reason of or arising out of this
Agreement, nor shall the Collateral Agent be required or obligated in any
manner to perform or fulfill any of the obligations of the Company under or
with respect to any Collateral.

         8.9.    Termination; Release. (a) After the Termination Date, this
Agreement shall terminate and the Collateral Agent, at the request and expense
of the Company, will execute and deliver to the Company a proper instrument or
instruments (including Uniform Commercial Code termination statements on form
UCC-3) acknowledging the satisfaction and termination of this Agreement as to
the Company, and will duly assign, transfer and deliver to the Company (without
recourse and without any representation or warranty) such of the Collateral of
the Company as may be in the possession of the Collateral Agent and as has not
theretofore been sold or otherwise applied or released pursuant to this
Agreement.  As used in this Agreement, "TERMINATION DATE" shall mean the date
upon which all Obligations have been paid in full.  For purposes of this
Section 8.9, the term Obligations shall not include any indemnity obligation
that has not yet arisen.

         (b) The Collateral Agent also shall release any or all of the
Collateral in accordance with the terms of Section 14 of the Intercreditor
Agreement.





                                      -22-
<PAGE>   138
         8.10.   Counterparts.  This Agreement may be executed in any number of
counterparts and by the different parties hereto on separate counterparts, each
of which when so executed and delivered shall be an original, but all of which
shall together constitute one and the same instrument.  A complete set of
counterparts executed by all the parties hereto shall be lodged with the
Company and the Collateral Agent.

         8.11.   The Collateral Agent.  The Collateral Agent will hold in
accordance with this Agreement and the Intercreditor Agreement all items of the
Collateral at any time received by it under this Agreement.  The obligations of
the Collateral Agent as holder of the Collateral and interests therein and with
respect to the disposition thereof, and otherwise under this Agreement, are
only those expressly set forth in this Agreement, the Intercreditor Agreement
and under applicable law.

         8.12.   Issuance of Debt Secured by the Collateral; Designation of
Additional Parity Debt Agreements.  (a) Upon the issue of any Note, Bank Note
or Additional Parity Debt pursuant to the Note Purchase Agreement, the Credit
Agreement or the Additional Parity Debt Agreements, respectively, or upon any
substitution for any such Notes, Bank Notes or Additional Parity Debt, the
Company will deliver to the Collateral Agent an Officers' Certificate
specifying the date and principal amount of such Note, Bank Note or Additional
Parity Debt and the name and address of the holder thereof and stating that
such Note, Bank Note or Additional Parity Debt is being issued pursuant to the
Note Purchase Agreement, the Credit Agreement or Additional Parity Debt
Agreements or in substitution for a previously issued Note, Bank Note or
Additional Parity Debt (in which case such certificate shall also identify with
reasonable specificity such previously issued Note, Bank Note or Additional
Parity Debt) and that such Note, Bank Note or Additional Parity Debt is
entitled to the benefits of this Agreement, the Intercreditor Agreement and of
the Security.  The Company will also deliver to the Collateral Agent promptly
upon request similar Officers' Certificates of the Company confirming such data
as to all Notes, Bank Notes and Additional Parity Debt at the time outstanding
and entitled to the benefits of this Agreement, the Intercreditor Agreement and
of the Security, and, in addition, with respect to the Notes and any Additional
Parity Debt that is in registered form, setting forth, as of the date of such
Officers' Certificate, (i) with respect to any interest payment, the name and
address of each registered holder of any Note or Additional Parity Debt,
together with the principal amount of all Notes and Additional Parity Debt held
by each respective holder and (ii) with respect to any prepayment, the
prepayment date, the aggregate principal amount of the Notes and Additional
Parity Debt prepaid on such date, the name of the registered holder of each
Note and Additional Parity Debt prepaid, the amount of each such Note and
Additional Parity Debt prepaid, the premium (including without limitation any
Premium), if any, applicable to such





                                      -23-
<PAGE>   139
prepayment and the provision of the Note Purchase Agreement or Additional
Parity Debt Agreements pursuant to which such prepayment was made.

         (b) The Company may designate any agreement and other instruments
evidencing Indebtedness or pursuant to which Indebtedness is to be issued as
Additional Parity Debt Agreements under the Intercreditor Agreement as provided
in Section 6 of the Intercreditor Agreement.





                                      -24-
<PAGE>   140
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed and delivered by their duly authorized officers as of the date
first above written.


                                      HERITAGE HOLDINGS, INC.,
                                         as Assignor


                                      By: /s/ James E. Bertelsmeyer             
                                         ---------------------------------------
                                         Title: Chairman & CEO



                                      HERITAGE OPERATING, L.P.,
                                         as Assignor


                                      By: Heritage Holdings, Inc.,
                                          General Partner


                                      By: /s/ James E. Bertelsmeyer             
                                         ---------------------------------------
                                         Title: Chairman & CEO





                                      -25-
<PAGE>   141
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed and delivered by their duly authorized officers as of the date
first above written.


                                      WILMINGTON TRUST COMPANY
                                         as Collateral Agent


                                      By: /s/ W. Chris Sponenberg               
                                         ---------------------------------------
                                         Title: Financial Services Officer





                                      -26-
<PAGE>   142
                                                                      APPENDIX A

                                  DEFINITIONS

         As used herein the following terms have the following respective
meanings:

         Additional Parity Agent:  any agent under any Additional Parity Debt
Agreement.

         Additional Parity Debt:  as defined in both Section 10B of the Note
Purchase Agreement and in Section 1.1 of the Credit Agreement, in each case, as
in effect at Closing.

         Additional Parity Debt Agreements:  the agreements between the Company
and each Additional Parity Lender, providing for the incurrence of Additional
Parity Debt.

         Additional Parity Debt Obligations:  the meaning specified in the
definition of Obligations.

         Additional Parity Effective Date:  the meaning specified in Section 6
of the Intercreditor Agreement.

         Additional Parity Lenders:  the original purchasers of the Additional
Parity Debt pursuant to the Additional Parity Debt Agreements, and any
successors or assigns thereof.

         Administrative Agent:  The First National Bank of Boston, as
administrative agent under the Credit Agreement, together with its successors
as such administrative agent.

         Agents:  The Administrative Agent and Bank of Oklahoma, National
Association, as documentation agent, under the Credit Agreement, collectively.

         Assets:  the meaning specified in the Contribution Agreement, as in
effect at Closing.

         Assignor or Assignors:  the meaning specified in the Preamble.

         Assumed Liabilities:  the meaning specified in the Contribution
Agreement, as in effect at Closing.

         Bank Notes:  the meaning specified in Section 1(a) of the
Intercreditor Agreement.





                                      -1-
<PAGE>   143
         Bankruptcy Event:  (a) the General Partner, the Company or any
Significant Subsidiary Group makes an assignment for the benefit of creditors
or is generally not paying its debts as such debts become due; or (b) any
decree or order for relief in respect of the General Partner, the Company or
any Significant Subsidiary Group is entered under any Bankruptcy Law; or (c)
the General Partner, the Company or any Significant Subsidiary Group petitions
or applies to any tribunal for, or consents to, the appointment of, or taking
possession by, a trustee, receiver, custodian, liquidator or similar official
of the General Partner, the Company or any Significant Subsidiary Group , or of
any substantial part of the assets of the General Partner, the Company or any
Significant Subsidiary Group, or commences a voluntary case under the
Bankruptcy Law of the United States or any proceedings (other than proceedings
for the voluntary liquidation and dissolution of the General Partner, the
Company or any Significant Subsidiary Group) relating to the General Partner,
the Company or any Significant Subsidiary Group under the Bankruptcy Law of any
other jurisdiction; or (d) any such petition or application is filed, or any
such proceedings are commenced, against the General Partner, the Company or any
Significant Subsidiary Group and the General Partner, the Company or any
Significant Subsidiary Group by any act indicates its approval thereof,
consents thereto or acquiescences therein, or an order, judgment or decree is
entered appointing any such trustee, receiver, custodian, liquidator or similar
official, or approving the petition in any such proceedings, and such order,
judgment or decree remains unstayed and in effect for more than 30 days.

         Bankruptcy Law:  any bankruptcy, reorganization, compromise,
arrangement, insolvency, readjustment of debt, dissolution or liquidation or
similar law, whether now or hereafter in effect, of any jurisdiction.

         Banks:  the several financial institutions from time to time party to
the Credit Agreement in their capacities as a "Bank" thereunder, and any
successors or assigns thereof.

         Board of Directors:  the board of directors of the General Partner.

         Business:  the business of wholesale and retail sales and distribution
of propane gas, providing repair, installation and maintenance services for
propane heating systems and the sale and distribution of propane-related
supplies and equipment, including appliances.

         Business Day:  any day other than a Saturday, a Sunday or a day on
which commercial banks in New York City or Tulsa, Oklahoma are required or
authorized by law or other government action to be closed.

         Cash Concentration Account:  as defined in Section 2.7.





                                      -2-
<PAGE>   144
         Cash Equivalents:  as defined in Section 6E(iii) of the Note Purchase
Agreement, as in effect at Closing.

         Certificates and Stock Powers:  the meaning specified in Section
3H(iii) of the Note Purchase Agreement.

         Chattel Paper:  as defined in the UCC, arising from the sale or lease
of Inventory or from the performance of services.

         Closing:  as defined in Section 2 of the Note Purchase Agreement, as
in effect at Closing.

         Collateral:  as defined in Section 1.1(a).

         Collateral Agent:  Wilmington Trust Company, as Collateral Agent under
the Intercreditor Agreement, together with its successors and permitted assigns
as provided therein.

         Company:  as defined in the Preamble.

         Contract Rights:  of any Person, all rights of such Person (including,
without limitation, all rights to payments and indemnities) under each
Contract; provided that such Contract Rights shall not include any rights under
any Contract that, solely by reason of their hypothecation under this
Agreement, would create a default under such Contract or under any applicable
law.

         Contracts:  of any Person, all contracts, agreements, arrangements,
grants, gifts, trusts, or other arrangements or understandings of any kind
between such Person and one or more additional parties.

         Contribution:  the meaning specified in Article 2.1 of the
Contribution Agreement, as in effect at Closing.

         Contribution Agreement:  the Contribution Agreement, dated as of the
Closing, among the General Partner, the Operating Partnership, Heritage Propane
Partnership, L.P., and Heritage Bi-State Corp., as the same shall be amended,
supplemented or otherwise modified from time to time.

         Copyright:  as to any Person, any United States copyright which such
Person now or hereafter has registered with the United States Copyright Office,
as well as any application for a United States copyright registration now or
hereafter made with the United States Copyright Office by such Person.





                                      -3-
<PAGE>   145
         Credit Agreement:  the meaning specified in Section 1(a) of the
Intercreditor Agreement.

         Credit Obligations:  the meaning specified in the definition of
Obligations.

         Documents:  all documents of title covering any Inventory.

         Dollar and sign "$":  lawful money of the United States of America.

         Effective Time:  as defined in the Contribution Agreement.

         Equipment:  as to any Person, any "equipment," as such term is defined
in the UCC, now or hereafter owned by such Person and, in any event, shall
include but shall not be limited to all machinery, equipment, furnishings, and
movable trade fixtures now or hereafter owned by such Person and any and all
additions, substitutions and replacements of any of the foregoing, wherever
located, together with all attachments, components, parts, equipment and
accessories installed thereon or affixed thereto (including, without
limitation, all bulk tanks for the storage of propane, regulators, valves,
fittings, meters, motors, pumps, piping, propane cylinders, office furniture,
furnishings, computers and equipment of any kind); provided, however, that such
Equipment shall not include (a) any such Equipment which may be subject to any
Lien permitted pursuant to clause (i), (vii), (viii) or (xv) (to the extent
clause (xv) applies to clause (i), (vii) or (viii)) of Section 7B.3 of the
Credit Agreement, clause (i), (vii), (viii) or (xv) (to the extent clause (xv)
applies to clause (i), (vii) or (viii)) of Section 6C of the Note Purchase
Agreement and the parallel provisions of any Additional Parity Debt Agreement,
(b) any automobiles, trucks, trailers and other vehicles and other tangible
personal property required to be registered or licensed under any certificate
of title act or other similar law or watercraft or (c) any equipment or other
tangible personal property in the nature of telephone equipment, photocopiers,
computer equipment, vending machines or other equipment or property the use of
which is ancillary to the primary business of such Person that, solely by its
hypothecation under the Security Agreement, would create a default under any
agreement with the maker, seller, supplier or financier of such equipment or
property applicable thereto (but only if the financing of such equipment or
property is permitted under the Credit Agreement, the Note Purchase Agreement
and any Additional Parity Debt Agreement) or under applicable law.

         Excess Sales Proceeds:  the meaning specified in Section
6G(iii)(c)(II) of the Note Purchase Agreement.

         Excess Taking Proceeds:  the meaning specified in Section 4C of the
Note Purchase Agreement.





                                      -4-
<PAGE>   146
         Financing Statements:  the meaning specified in Section 3H(iii) of the
Note Purchase Agreement.

         GAAP:  the meaning specified in Section 10C of the Note Purchase
Agreement.

         General Default:  any Default under, and as defined in, (i) the Note
Purchase Agreement, (ii) the Credit Agreement, or (iii) any Additional Parity
Debt Agreement.

         General Event of Default:  any Event of Default under, and as defined
in, (i) the Note Purchase Agreement, (ii) the Credit Agreement, or (iii) any
Additional Parity Debt Agreement.

         General Intangibles:  as defined in the UCC, including Marks, Patents
and Copyrights, provided that, except for the right to receive payments under
any such General Intangibles, such General Intangibles shall not include any
general intangible that, solely by reason of its hypothecation under this
Agreement, would create a default under any agreement giving rise to such
general intangible or under applicable law.

         General Partner:  Heritage, so long as it holds a general partner
interest in the Operating Partnership, and any successor to such interest or
any part thereof, so long as such successor shall hold such interest or part
thereof.

         Governmental Authority:  as to any Person, any governmental agency,
authority, instrumentality or regulatory body, other than a court or other
tribunal, in each case whether federal, state, local or foreign, having
jurisdiction over such Person or its assets.

         Heritage:  Heritage Holdings, Inc., a Delaware corporation.

         Indebtedness:  the meaning specified in Section 10B of the Note
Purchase Agreement.

         Indemnitee or Indemnitees:  the meaning specified in Section 6.1.

         Instrument:  as defined in the UCC, arising from the sale or lease of
Inventory or from the performance of services.

         Intercreditor Agreement:  the Intercreditor and Agency Agreement,
dated as of the date of the Closing, by and among the Noteholders, the
Administrative Agent and the Collateral Agent, as the same may be amended,
supplemented or otherwise modified from time to time.





                                      -5-
<PAGE>   147
         Inventory:  goods held by a Person for sale or lease or to be
furnished under contracts of service or if such Person has so furnished them,
or if they are raw materials, work in process, materials used or consumed in
the Business or finished inventory of every type or description (including,
without limitation, (a) all customer and residential customer tanks for the
storage of propane held for lease or leased to others, (b) all stores,
furnaces, air conditioners, heaters and other appliances, (c) all parts and
supplies held for resale or use in such Person's business, (d) all liquefied
propane and other related petroleum derivative products, and (e) other
inventory and supplies of any kind); and all documents of title covering such
inventory, and shall specifically include all inventory as such term is defined
in the UCC, now or hereafter owned by such Person; provided, however, that such
Inventory shall not include any such Inventory which the Company may subject to
any Lien permitted pursuant to clause (i), (vii), (viii) or (xv) (to the extent
clause (xv) applies to clause (i), (vii) or (viii)) of Section 7B.3 of the
Credit Agreement, clause (i), (vii), (viii) or (xv) (to the extent clause (xv)
applies to clause (i), (vii) or (viii)) of Section 6C of the Note Purchase
Agreement and the parallel provisions of any Additional Parity Debt Agreement
or any inventory that, solely by its hypothecation under this Agreement, would
create a default with the seller, supplier or financier of such inventory (but
only if the financing of such inventory is permitted under the Credit
Agreement, the Note Purchase Agreement and any Additional Parity Debt
Agreement).

         Legal Requirements:  any law, statute, ordinance, decree, requirement,
order, judgment, rule or regulation (or published official interpretation by
any Governmental Authority of any of the foregoing) of any Governmental
Authority.

         Lien:  any mortgage, pledge, security interest, encumbrance,
contractual deposit arrangement, lien (statutory or otherwise) or charge of any
kind (including any agreement to give any of the foregoing, any conditional
sale or other title retention agreement, any lease in the nature thereof, and
the filing of or agreement to give any financing statement under the Uniform
Commercial Code of any jurisdiction) or any other type of preferential
arrangement for the purpose, or having the effect, of protecting a creditor
against loss or securing the payment or performance of an obligation, provided
that neither negative pledges, nor covenants to abstain from granting liens on
or security interests in the assets of the General Partner, the Operating
Partnership or any Subsidiary of the Company, shall constitute Liens, and the
inclusion of any such provisions in agreements of any such Person shall not
constitute a breach or violation of this Agreement.

         Losses:  as defined in Section 6.1.

         Marks:  of any Person, any trademarks and service marks now held or
hereafter acquired by such Person which are registered in the United States
Patent and Trademark Office or with any state, governmental or public body or
authority, or any





                                      -6-
<PAGE>   148
subdivision thereof, as well as any unregistered marks used by such Person in
the United States including logos, designs, marks and/or symbols in connection
with which any of these registered or unregistered marks are used.

         Note Purchase Agreement:  the Note Purchase Agreement, dated as of
June 25, 1996, between Heritage, the Operating Partnership and the Purchasers,
as the same may be amended, modified or supplemented from time.

         Noteholders:  the registered holders from time to time of the Notes.

         Note Obligations:  the meaning specified in the definition of
Obligations.

         Notes:  the meaning specified in Section 1 of the Note Purchase
Agreement.

         Obligations:

         (i)  (x) the principal of, Premium, if any, with respect to, and
    interest on (including any interest accruing after a Bankruptcy Event,
    whether or not an allowable claim) the Notes and the Note Purchase
    Agreement (including all reimbursement obligations thereunder), and (y) all
    other obligations and indebtedness (including, without limitation,
    indemnities, fees and expenses and interest thereon) of Heritage and the
    Operating Partnership to the Noteholders now existing or hereafter incurred
    under, arising out of, or in connection with, the Notes, the Note Purchase
    Agreement and the Security Documents (all such principal, interest,
    obligations and indebtedness in this clause (i) being herein collectively
    called the "Note Obligations");

         (ii)  (x) the principal of, prepayment charge, if any, with respect
    to, and interest on (including any interest accruing after a Bankruptcy
    Event, whether or not an allowable claim), the Bank Notes and the Credit
    Agreements (including all reimbursement obligations thereunder), and (y)
    all other obligations and indebtedness (including, without limitation,
    indemnities, fees, expenses and any prepayment or breakage fees and
    interest thereon) of the Operating Partnership to the Banks and the Agents,
    now existing or hereafter incurred under, arising out of, or in connection
    with, the Bank Notes, the Credit Agreement and the Security Documents (all
    such principal, interest, obligations and indebtedness in this clause (ii)
    being herein collectively called the "Credit Obligations");

         (iii)  (x) the principal of, prepayment charge, if any, with respect
    to, and interest on (including any interest accruing after a Bankruptcy
    Event, whether or not an allowable claim), the Additional Parity Debt and
    the Additional Parity Debt Agreements (including all reimbursement
    obligations thereunder), and (y) all other obligations and indebtedness
    (including without limitation indemnities, fees, 




                                      -7-

<PAGE>   149
    expenses and any prepayment or breakage fees and interest thereon) of the
    Operating Partnership to the Additional Parity Lenders and the Additional
    Parity Agents incurred under, arising out of, or in connection with any
    Additional Parity Debt Agreement, whether such Additional Parity Debt
    Agreement is now in existence or hereafter arising and the Security
    Documents (all such obligations and indebtedness in this clause (iii) being
    herein called the "Additional Parity Debt Obligations");

         (iv)  any and all sums advanced by the Collateral Agent in accordance
    with the terms of the Security Documents in order to preserve the Security
    or preserve its security interest in the Security, together with interest
    thereon at the Default Rate; and

         (v)  in the event of any proceeding for the collection or enforcement
    of any indebtedness, obligations, or liabilities of the Company, its
    Subsidiaries and the other parties referred to in clauses (i) through (iv)
    above, after a General Event of Default shall have occurred and be
    continuing, the expenses of retaking, holding, preparing for sale or lease,
    selling or otherwise disposing or realizing on the Security, or of any
    exercise by the Collateral Agent of its rights under any of the Security
    Documents, together with reasonable attorneys' fees and court costs and all
    amounts paid by any Secured Creditor or the Collateral Agent under any of
    the Security Documents, including, without limitation, pursuant to Section
    6.1 of this Agreement and Section 3 of the Intercreditor Agreement.

         Obligors:  the General Partner and the Operating Partnership.

         Officers' Certificate:  as to any corporation, a certificate executed
on its behalf by the Chairman of the Board of Directors (if an officer) or its
President or one of its Vice Presidents, and its Treasurer, or Controller, or
one of its Assistant Treasurers or Assistant Controllers, and, as to any
partnership, a certificate executed on behalf of such partnership by its
general partner in a manner which would qualify such certificate (a) if such
general partner is a corporation, as an Officers' Certificate of such general
partner hereunder, or (b) if such general partner is a partnership or other
entity, as a certificate executed on its behalf by Persons authorized to do so
pursuant to the constituting documents of such partnership or other entity.

         Operating Partnership:  Heritage Operating, L.P., a Delaware limited
partnership.

         Parity Agents:  any agent under any Parity Debt Agreements.





                                      -8-
<PAGE>   150
         Patents:  of any Person, any United States patent to which such Person
now or hereafter has title, as well as any application for a United States
patent now or hereafter made by such Person.

         Permitted Filings:  financing statements, if any, disclosed on Annex A
hereto, including any renewals or extensions thereof to the extent permitted by
the Note Purchase Agreement, the Credit Agreement and any Additional Parity
Debt Agreement.

         Permitted Investments:  as defined in Section 2.9.

         Permitted Liens:  Permitted Filings and Liens permitted pursuant to
clauses (ii), (iii), (iv), (v), (x), (xi), (xiii) and (xv) (to the extent
relating to clause (ii), (iii), (iv), (v), (x), (xi) or (xiii)) of Section 7B.3
of the Credit Agreement, clauses (ii), (iii), (iv), (v), (vi), (x), (xi),
(xiii) and (xv) (to the extent relating to clause (ii), (iii), (iv), (v), (x),
(xi) or (xiii))of Section 6C of the Note Purchase Agreement and the parallel
provisions of any Additional Parity Debt Agreement.

         Permitted States:  the states of North Carolina, South Carolina,
Florida, Massachusetts, Texas, New Mexico, Arizona, California, Nevada,
Colorado, Oregon, Washington, Montana, Minnesota, Michigan, Oklahoma and Idaho.

         Person:  an individual, a partnership, a joint venture, a corporation,
a trust, an unincorporated organization and a government or any department or
agency thereof.

         Proceeds:  as defined in the UCC or under other relevant law and, in
any event, shall include, but not be limited to (i) any and all proceeds of any
insurance, indemnity, warranty or guaranty payable to the Collateral Agent or
the Company from time to time with respect of the Security, (ii) any and all
payments (in any form whatsoever) made or due and payable to the Company from
time to time in connection with any requisition, confiscation, condemnation,
seizure or forfeiture of all or any part of the Security by any Governmental
Authority (or any person acting under color of Governmental Authority), and
(iii) any and all other amounts from time to time paid or payable under or in
connection with any of the Security.

         Purchasers: the purchasers named in the Purchaser Schedule attached to
the Note Purchase Agreement, as in effect at Closing.

         Receivables:  of a Person, any "account" as such term in defined in
the UCC, now or hereafter owned by such Person and all of the Person's rights
to payment for goods sold or leased or services performed by such Person,
whether now in existence or arising from time to time hereafter, including,
without limitation, rights evidenced by an account, note, contract, security
agreement, chattel paper, or other evidence of indebtedness or security,
together with (a) all security pledged, assigned, hypothecated or





                                      -9-
<PAGE>   151
granted to or held by such Person to secure the foregoing, (b) all of such
Person's right, title and interest in and to any goods, the sale of which gave
rise thereto, (c) all guarantees, endorsements and indemnifications on, or of,
any of the foregoing, (d) all powers of attorney for the execution of any
evidence of indebtedness or security or other writing in connection therewith,
(e) all books, records, ledger cards, and invoices relating thereto, (f) all
evidences of the filing of financing statements and other statements and the
registration of other instruments in connection therewith and amendments
thereto, notices to other creditors or secured parties, and certificates from
filing or other registration officers, (g) all credit information, reports and
memoranda relating thereto, and (h) all other writings related in any way to
the foregoing; provided, however, that such Receivable described above in
clauses (a) through (h) shall not include any property or rights described
therein that, solely by reason of its hypothecation under the Security
Agreement would create a default under any applicable agreement or applicable
law.

         Requisite Additional Parity Lenders:  at any time, the holders of at
least 51% of the aggregate principal amount of all Additional Parity Debt
Obligations then outstanding, determined in such reasonable fashion as is
acceptable to the Collateral Agent.

         Requisite Banks:  at any time, Banks then holding at least 662/3% in
aggregate principal amount of the Bank Notes then outstanding.

         Requisite Noteholders:  at any time, the holders of at least 51% in
aggregate principal amount of the Notes then outstanding.

         Requisite Holders:  at any time of determination, and prior to the
date on which all Obligations have been repaid in full, collectively (and not
individually): (x) the Requisite Banks, but only if at any time of
determination the aggregate outstanding principal amount of the Bank Notes then
outstanding represents more than 5% of the aggregate outstanding principal
amount of the Notes then outstanding, plus (y) the Requisite Noteholders plus
(z) the Requisite Additional Parity Lenders, but only, in the case of this
clause (z), if (1) at any time of determination the aggregate principal amount
of the Additional Parity Debt Obligations represents more than 100% of the sum
of the aggregate principal amount of the Note Obligations and the Credit
Obligations, or (2) the Requisite Holders is being determined in connection
with any amendment contemplated by Section 8.2 of this Agreement and such
amendment would affect the Additional Parity Lenders differently from the
Noteholders and the Banks.

         Secured Creditors:  the Noteholders, the Agents, the other Banks, the
Additional Parity Lenders and the Additional Parity Agents.





                                      -10-
<PAGE>   152
         Security:  any property held (including, without limitation, the
Collateral) and all rights of the Collateral Agent under the Security Documents
or in respect of such property and the Security Documents, together with any
additional property subject to and any additional rights under any of the
Security Documents.

         Security Documents:  (a) this Agreement, (b) the Certificates and
Stock Powers, (c) the Financing Statements, and (d) and any other instrument or
agreement which purports to grant to the Collateral Agent a security interest
in or a lien on property to secure any Note, Bank Note or Additional Parity
Debt, or which is stated therein to be a Security Document.  Each Security
Document referred to in the preceding sentence may be referred to as a
"Security Document."  All references to any Security Document shall mean such
Security Document as at the time supplemented or amended in accordance with the
terms thereof.

         Shared Proceeds:  the meaning specified in Section 4 of the
Intercreditor Agreement.

         Significant Subsidiary Group:  the meaning specified in Section 10B of
the Note Purchase Agreement.

         Subsidiary:  the meaning specified in Section 10B of the Note Purchase
Agreement.

         Termination Date:  as defined in Section 7.9.

         UCC:  unless otherwise specified, the Uniform Commercial Code as it
may from time to time be in effect in the State of New York.

         Unutilized Taking Proceeds:  the meaning specified in Section 10B of
the Note Purchase Agreement.

         Yield Maintenance Amount:  the meaning specified in Section 10A of the
Note Purchase Agreement.





                                      -11-
<PAGE>   153
                                                                         ANNEX A

                         Existing Financing Statements
<PAGE>   154
                                                                         ANNEX B

                       Inventory and Equipment Locations
<PAGE>   155
                                                                         ANNEX C

                        Trade and Fictitious Names Used

Balgas
Carolane Propane Gas
Fairway Propane
Gas Service Co.
Greer Gas Co.
Harris Propane Gas
Heritage Propane Corporation
Holton's L.P. Gas
Ikard & Newsom
Jerry's Propane Service, Inc.
Myers Propane Service
New Mexico Propane of Taos
Northern Energy
Northwestern Propane
Sawyer Gas
Wakulla L.P.G.

and similar names using location specific derivations thereof.

<PAGE>   1
                            HERITAGE HOLDINGS, INC.
                            HERITAGE OPERATING, L.P.
                         8801 S. YALE AVENUE, SUITE 310
                             TULSA, OKLAHOMA  74137
                                 (918) 492-7272


                                                                   July 25, 1996


To:      Each of the Purchasers Named in the
         Purchaser Schedule Attached Hereto


Ladies and Gentlemen:

         Reference is made to the Note Purchase Agreement, dated as of June 25,
1996 (the "Agreement"), among Heritage Holdings, Inc., Heritage Operating, L.P.
and the Purchasers named in the Purchaser schedule attached thereto.  Terms
used herein that are not otherwise defined shall have the meanings set forth in
the Agreement.

         The Operating Partnership and Heritage request that the Purchasers
amend the Agreement to clarify the original intention of the parties thereto
that the Company be permitted to incur under Section 6B ("Indebtedness") the
Non- Compete Obligations that it is permitted to incur under clause (viii) of
Section 6C ("Liens").

         Accordingly, the Operating Partnership and Heritage agree with the
Purchasers as follows:

         For the purpose of clarifying the original intention of the parties to
the Agreement, Section 6B(xii) of the Agreement is hereby amended, effective as
of June 25, 1996, to read in its entirety as follows, as if at all times on and
after such date so written (the language added hereby being indicated by double
underscoring):

                 "(xii)  the Company may become and remain liable with respect
         to Indebtedness incurred in respect of Capitalized Lease Obligations
         and Non-Compete Obligations; provided that the Lien in respect thereof
         is permitted by clause (viii) of Section 6C,"


         Except as otherwise expressly provided herein, the Agreement shall be
in full force and effect and applicable in all respects to this letter.
<PAGE>   2
The foregoing letter is hereby accepted as of the
date first above written.

JOHN HANCOCK MUTUAL LIFE
INSURANCE COMPANY

By:  /s/                                            
    -----------------------------------
    Name:   Eileen M. Furde
    Title:  Investment Officer


JOHN HANCOCK VARIABLE LIFE
INSURANCE COMPANY

By:  /s/                                            
    -----------------------------------
    Name:   Margaret Stapleton
    Title:  Vice President


MELLON BANK, N.A., solely in its capacity as
Trustee for the AT&T MASTER PENSION
TRUST, (as directed by John Hancock Mutual
Life Insurance Company), and not in its
individual capacity

By:  /s/                                            
    -----------------------------------
    Name: 
    Title:

MASSACHUSETTS MUTUAL LIFE
INSURANCE COMPANY

By:  /s/                                            
    -----------------------------------
    Name:   Richard C. Morrison
    Title:  Managing Director


PRINCIPAL MUTUAL LIFE INSURANCE
COMPANY

By:  /s/                                            
    -----------------------------------
    Name:  Scott A. Bennett
    Title: Assistant Director-Securities 
           Investment

By:  /s/                                            
    -----------------------------------
    Name:  DO. Bralleby
    Title: Second Vice President-Securities 
           Investment





                                     -2-
<PAGE>   3

TEACHERS INSURANCE AND ANNUITY
ASSOCIATION OF AMERICA

By:  /s/                                            
    -----------------------------------
    Name:   John Litchfield
    Title:  Director-Private Placements


MONY LIFE INSURANCE COMPANY OF
AMERICA

By:  /s/                                            
    -----------------------------------
    Name:       
    Title:

THE MUTUAL LIFE INSURANCE
COMPANY OF NEW YORK

By:  /s/                                           
    -----------------------------------
    Name:
    Title:

PACIFIC MUTUAL LIFE INSURANCE
COMPANY

By:  /s/                                            
    -----------------------------------
    Name:   William Schmidt
    Title:  Assistant Vice President

By:  /s/                                            
    -----------------------------------
    Name:   Peter S. Fick
    Title:  Assistant Secretary


PHOENIX HOME LIFE MUTUAL
INSURANCE COMPANY

By:  /s/                                            
    -----------------------------------
    Name:   Paul M. Chute
    Title:  Managing Director





                                     -3-
<PAGE>   4
WISCONSIN NATIONAL LIFE INSURANCE
COMPANY

By:  /s/                                            
    -----------------------------------
    Name:   Carl S. Thigpen
    Title:  Vice President, Investments


By:  /s/                                            
    -----------------------------------
    Name:   Vita P Bates
    Title:  Assistant Vice President, 
            Investments





                                     -4-

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          AUG-31-1997
<PERIOD-START>                             SEP-01-1996
<PERIOD-END>                               NOV-30-1996
<CASH>                                           1,987
<SECURITIES>                                         0
<RECEIVABLES>                                   24,300
<ALLOWANCES>                                       315
<INVENTORY>                                     12,600
<CURRENT-ASSETS>                                39,945
<PP&E>                                         133,374
<DEPRECIATION>                                  22,392
<TOTAL-ASSETS>                                 204,007
<CURRENT-LIABILITIES>                           43,910
<BONDS>                                        132,598
<COMMON>                                        27,499
                                0
                                          0
<OTHER-SE>                                           0
<TOTAL-LIABILITY-AND-EQUITY>                   204,007
<SALES>                                         50,643
<TOTAL-REVENUES>                                50,643
<CGS>                                           34,482
<TOTAL-COSTS>                                   47,964
<OTHER-EXPENSES>                                   322
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,942
<INCOME-PRETAX>                                     59
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                               (96)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                      (96)
<EPS-PRIMARY>                                    (.02)
<EPS-DILUTED>                                        0
        

</TABLE>


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