SOUTHWEST GAS CORP
10-K405, 1996-03-29
NATURAL GAS TRANSMISISON & DISTRIBUTION
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                   FORM 10-K
(MARK ONE)
/X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT
    OF 1934 [FEE REQUIRED]

                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 1995
 
                                       OR
 
/ / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE
    ACT OF 1934 [NO FEE REQUIRED]
           FOR THE TRANSITION PERIOD FROM             TO
 
                         COMMISSION FILE NUMBER 1-7850
 
                           SOUTHWEST GAS CORPORATION
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                           <C>
                  CALIFORNIA                                    88-0085720
       (STATE OR OTHER JURISDICTION OF                       (I.R.S. EMPLOYER
        INCORPORATION OR ORGANIZATION)                     IDENTIFICATION NO.)

          5241 SPRING MOUNTAIN ROAD                             89193-8510
            POST OFFICE BOX 98510                               (ZIP CODE)
              LAS VEGAS, NEVADA
   (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)
</TABLE>
 
       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (702) 876-7237
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:
 
<TABLE>
<CAPTION>
                                                          NAME OF EACH EXCHANGE
             TITLE OF EACH CLASS                           ON WHICH REGISTERED
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<S>                                           <C>
          Common Stock, $1 par value                  New York Stock Exchange, Inc.
                                                       Pacific Stock Exchange, Inc.
 9.125% Trust Originated Preferred Securities         New York Stock Exchange, Inc.
                                                       Pacific Stock Exchange, Inc.
</TABLE>
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:
 
<TABLE>
<S>                                          <C>   
    9% DEBENTURES, SERIES A, DUE 2011        9 3/8% DEBENTURES, SERIES D, DUE 2017
    9% DEBENTURES, SERIES B, DUE 2011           10% DEBENTURES, SERIES E, DUE 2013
8 3/4% DEBENTURES, SERIES C, DUE 2011        9 3/4% DEBENTURES, SERIES F, DUE 2002
</TABLE>
 
     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
 
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.  ['X']
 
              AGGREGATE MARKET VALUE OF THE VOTING STOCK HELD BY
                       NONAFFILIATES OF THE REGISTRANT:
 
                         $401,741,616 at March 15, 1996
 
               THE NUMBER OF SHARES OUTSTANDING OF COMMON STOCK:
 
       Common Stock, $1 Par Value 24,722,561 shares as of March 15, 1996
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
                                      None
 
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<PAGE>   2
 
                               TABLE OF CONTENTS
 
                                     PART I
 
<TABLE>
<CAPTION>
                                                                                        PAGE
                                                                                        ----
<C>         <S>                                                                         <C>
  ITEM  1.  BUSINESS..................................................................    1
            Continuing Operations -- Natural Gas Operations...........................    1
              General Description.....................................................    1
              Properties..............................................................    2
              Rates and Regulation....................................................    4
              Competition.............................................................    4
              Demand for Natural Gas..................................................    5
              Natural Gas Supply......................................................    5
              Environmental Matters...................................................    6
              Employees...............................................................    6
            Discontinued Operations -- Financial Services Activities..................    7
              General Description.....................................................    7
              Lending Activities......................................................    7
              Asset Quality...........................................................   12
              Real Estate Development Activities......................................   14
              Investment Activities...................................................   15
              Deposit Activities......................................................   16
              Borrowings..............................................................   17
              Employees...............................................................   18
              Competition.............................................................   18
              Properties..............................................................   18
              Regulation..............................................................   18
            Holding Company Matters...................................................   24

  ITEM  2.  PROPERTIES................................................................   25

  ITEM  3.  LEGAL PROCEEDINGS.........................................................   25

  ITEM  4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.......................   25


                                          PART II

  ITEM  5.  MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
            MATTERS...................................................................   26

  ITEM  6.  SELECTED FINANCIAL DATA...................................................   27
            Consolidated Selected Financial Statistics................................   27
            Natural Gas Operations....................................................   28
            Discontinued Operations -- Financial Services.............................   29

  ITEM  7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
            OPERATIONS................................................................   30
            Capital Resources and Liquidity...........................................   30
            Results of Operations.....................................................   31
            Recently Issued Accounting Pronouncements.................................   32
            Continuing Operations -- Natural Gas Operations...........................   32
              Capital Resources and Liquidity.........................................   32
              Results of Natural Gas Operations.......................................   34
              Rates and Regulatory Proceedings........................................   36
</TABLE>
 
                                        i
<PAGE>   3
 
<TABLE>
<CAPTION>
                                                                                        PAGE
                                                                                        ----
<S>         <C>                                                                         <C>
            Discontinued Operations -- Financial Services Segment.....................   37
              Financial and Regulatory Capital........................................   37
              Deposit Premiums........................................................   38
              Capital Resources and Liquidity.........................................   38
              Risk Management.........................................................   39
              Results of Financial Services Operations................................   46

  ITEM  8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA...............................   50
            Consolidated Balance Sheets...............................................   50
            Consolidated Statements of Income.........................................   51
            Consolidated Statements of Cash Flows.....................................   52
            Consolidated Statements of Stockholders' Equity...........................   53
            Notes to Consolidated Financial Statements................................   54
              Note  1 -- Summary of Significant Accounting Policies...................   54
              Note  2 -- Utility Plant................................................   55
              Note  3 -- Receivables and Related Allowances...........................   56
              Note  4 -- Regulatory Assets and Liabilities............................   56
              Note  5 -- Preferred Stock, Preference Stock, and Preferred Securities..   57
              Note  6 -- Long-Term Debt...............................................   58
              Note  7 -- Short-Term Debt..............................................   59
              Note  8 -- Commitments and Contingencies................................   59
              Note  9 -- Employee Postretirement Benefits.............................   60
              Note 10 -- Income Taxes.................................................   63
              Note 11 -- Quarterly Financial Data (Unaudited).........................   65
              Note 12 -- Discontinued Operations -- Financial Services Activities.....   66
              Note 13 -- PriMerit Bank................................................   68
            Report of Independent Public Accountants..................................   97

  ITEM  9.  DISAGREEMENTS ON ACCOUNTING AND FINANCIAL DISCLOSURE......................   98


                                          PART III

  ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT........................   98

  ITEM 11.  EXECUTIVE COMPENSATION....................................................  102

  ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
            MANAGEMENT................................................................  107

  ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS............................  107

  ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K...........  108
            List of Exhibits..........................................................  109

  SIGNATURES..........................................................................  112

  GLOSSARY OF TERMS...................................................................  114
</TABLE>
 
                                       ii
<PAGE>   4
 
                                     PART I
 
ITEM 1.  BUSINESS
 
     The registrant, Southwest Gas Corporation (the Company), is incorporated
under the laws of the State of California effective March 1931. The executive
offices of the Company are located at 5241 Spring Mountain Road, P.O. Box 98510,
Las Vegas, Nevada, 89193-8510, telephone number (702) 876-7237.
 
     The Company is principally engaged in the business of purchasing,
transporting, and distributing natural gas in portions of Arizona, Nevada, and
California. The Company also engaged in financial services activities, through
PriMerit Bank, Federal Savings Bank (PriMerit or the Bank), a wholly owned
subsidiary. See Selected Financial Data for financial information related to
natural gas operations and discontinued financial services operations.
 
     In January 1996, the Company entered into a definitive agreement with
Norwest Corporation to sell PriMerit. The sale is expected to be finalized in
the third quarter of 1996. The financial services activities are accounted for
as discontinued operations for consolidated financial reporting purposes.
However, as required, the Company has also included the separate, stand-alone
financial results and disclosures for the Bank on a going-concern basis in this
Form 10-K. Full disclosure of Bank operating activities and results on a
going-concern basis is included herein for purposes of providing information
considered useful in analyzing the proposed sale.
 
     Separate, stand-alone financial results and disclosures reported for the
Bank on a going-concern basis are included in ITEM 1, BUSINESS (pages 7 to 23),
ITEM 6, SELECTED FINANCIAL INFORMATION (page 29), ITEM 7, MANAGEMENT'S
DISCUSSION AND ANALYSIS (MD&A) (pages 37 to 49), and Note 13 of ITEM 8,
FINANCIAL STATEMENTS (pages 68 to 96). The separate stand-alone financial
results and disclosures reported for the Bank on a going-concern basis differ
from the results and disclosures reported for the Bank as a discontinued
operation. See Note 12 of the Notes to Consolidated Financial Statements for
reconciliations of Bank stand-alone financial information to the amounts shown
as discontinued operations in the consolidated financial statements. In 1996,
while the Company will continue, as required, to disclose the ongoing operating
results of the Bank through the close of the proposed transaction, those amounts
will not be realized or recognized by the Company in its consolidated financial
statements, consistent with the terms of the sales agreement.
 
     In November 1995, the Company entered into a definitive agreement to
acquire Northern Pipeline Construction Co. (NPL), a full-service underground gas
pipeline contractor. NPL provides local gas distribution companies with
installation, replacement and maintenance services for underground natural gas
distribution systems. The acquisition is anticipated to be completed during the
first half of 1996. See Note 8 of the Notes to Consolidated Financial Statements
for additional information.
 
                CONTINUING OPERATIONS -- NATURAL GAS OPERATIONS
 
GENERAL DESCRIPTION
 
     The Company is subject to regulation by the Arizona Corporation Commission
(ACC), the Public Service Commission of Nevada (PSCN), and the California Public
Utilities Commission (CPUC). These commissions regulate public utility rates,
practices, facilities, and service territories in their respective states. The
CPUC also regulates the issuance of all securities by the Company, with the
exception of short-term borrowings. Certain of the Company's accounting
practices, transmission facilities, and rates are subject to regulation by the
Federal Energy Regulatory Commission (FERC).
 
     The Company purchases, transports, and distributes natural gas to
approximately 1,029,000 residential, commercial, and industrial customers in
geographically diverse portions of Arizona, Nevada, and California. There were
49,000 customers added to the system during 1995. See Natural Gas Operations
Segment -- Capital Resources and Liquidity of MD&A for discussion of capital
requirements to meet the Company's expected future growth.
 
     For each of the years in the three-year period ended December 31, 1995, the
percentage of operating margin (operating revenues less net cost of gas) derived
from residential and small commercial customers was
 
                                        1
<PAGE>   5
 
79 percent, while the percentage related to large commercial, industrial, and
other users was 7 percent. The remaining 14 percent was derived from
transportation, electric generation, and resale customers.
 
     The volume of sales and transportation activity for electric utility
generating plants varies greatly according to demand for electricity and the
availability of alternative energy sources; however, the corresponding income is
not material in relation to the Company's earnings. In addition, the Company is
not dependent on any one or a few customers to the extent that the loss of any
one or several would have a significant adverse impact on the Company.
 
     Transportation of customer-secured gas to end-users on the Company's system
continues to have a significant impact on the Company's throughput, accounting
for 56 percent of total system throughput in 1995. Although the volumes were
significant, these customers provide a much smaller proportionate share of the
Company's operating margin. In 1995, customers who utilized this service
transported over one billion therms.
 
     The demand for natural gas is seasonal. Variability in weather from normal
temperatures may materially impact results of operations. It is management's
opinion that comparisons of earnings for interim periods do not reliably reflect
overall trends and changes in the Company's operations. Also, earnings for
interim periods can be significantly affected by the timing of general rate
relief.
 
PROPERTIES
 
     The plant investment of the Company consists primarily of transmission and
distribution mains, compressor stations, peak shaving/storage plants, service
lines, meters, and regulators which comprise the pipeline systems and facilities
located in and around the communities served. The Company also includes other
properties such as land, buildings, furnishings, work equipment, and vehicles in
plant investment. The Company's northern Nevada and northern California
properties are referred to as the northern system; the Arizona, southern Nevada,
and southern California properties are referred to as the southern system.
Several properties are leased by the Company, including a Liquefied Natural Gas
(LNG) storage plant on its northern Nevada system and a portion of the corporate
headquarters office complex located in Las Vegas, Nevada. See Note 2 of the
Notes to Consolidated Financial Statements for additional discussion regarding
these leases. Total gas plant, exclusive of leased property, at December 31,
1995, was $1.6 billion, including construction work in progress. It is the
opinion of management that the properties of the Company are suitable and
adequate for its purposes.
 
     Substantially all of the Company's gas mains and service lines are
constructed across property owned by others under right-of-way grants obtained
from the record owners thereof, on the streets and grounds of municipalities
under authority conferred by franchises or otherwise, or on public highways or
public lands under authority of various federal and state statutes. None of the
Company's numerous county and municipal franchises are exclusive, and some are
of limited duration. These franchises are renewed regularly as they expire, and
the Company anticipates no serious difficulties in obtaining future renewals.
 
     With respect to the right-of-way grants, the Company has had continuous and
uninterrupted possession and use of all such rights-of-way, and the associated
gas mains and service lines, commencing with the initial stages of the
construction of such facilities. Permits have been obtained from public
authorities in certain instances to cross, or to lay facilities along, roads and
highways. These permits typically are revocable at the election of the grantor,
and the Company occasionally must relocate its facilities when requested to do
so by the grantor. Permits have also been obtained from railroad companies to
cross over or under railroad lands or rights-of-way, which in some instances
require annual or other periodic payments and are revocable at the grantors'
elections.
 
     The Company operates two major pipeline transmission systems: (i) a system
owned by Paiute Pipeline Company (Paiute), a wholly owned subsidiary, extending
from the Idaho-Nevada border to the Reno, Sparks, and Carson City areas and
communities in the Lake Tahoe area in both California and Nevada and other
communities in northern and western Nevada; and (ii) a system extending from the
Colorado River at the southern tip of Nevada to the Las Vegas distribution area.
 
     The Company also owns a 35,000 acre site in northern Arizona which was
acquired for the purpose of constructing an underground natural gas storage
facility, known as the Pataya Gas Storage Project (Pataya),
 
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<PAGE>   6
 
to serve its southern system. Based upon current studies and the continued
restructuring of the utility industry, the Company believes that it will need an
underground natural gas storage facility, such as Pataya, in the future to meet
the needs of its customers on the southern system. Project costs of $11.1
million have been capitalized through December 1995 and include land acquisition
and related development costs.
 
     The map below shows the locations of the Company's major facilities and
major transmission lines, and principal communities to which the Company
supplies gas either as a wholesaler or distributor. The map also shows major
supplier transmission lines that are interconnected with the Company's systems.
 
                                    [MAP]
 
     [DESCRIPTION: Map of Arizona, Nevada, and southern California indicating
the location of the Company's service areas. Service areas in Arizona include
most of the central and southern areas of the state including Phoenix, Tucson,
Yuma, and surrounding communities. Service areas in northern Nevada include
Carson City, Yerington, Fallon, Lovelock, Winnemucca, and Elko. Service areas in
southern Nevada include the Las Vegas valley (including Henderson and Boulder
City), and Laughlin. Service areas in southern California include Barstow, Big
Bear, Needles, and Victorville. Service areas in northern California include the
north shore of Lake Tahoe. Companies providing gas transportation services for
the Company are indicated by showing the location of their pipelines. Major
transporters include El Paso Natural Gas Company, Kern River Gas Transmission
Company, Northwest Pipeline Corporation, and Southern California Gas Company.
The location of Paiute Pipeline Company's transmission pipeline (extending from
the Idaho/Nevada border to the Reno/Tahoe area) and the Company's pipeline
(extending from Laughlin/Bullhead City to the Las Vegas valley) are indicated.
The LNG facility is located near Lovelock, Nevada. The liquefied petroleum gas
facility is located near Reno, Nevada.]
 
                                        3
<PAGE>   7
 
RATES AND REGULATION
 
     Rates that the Company is authorized to charge its distribution system
customers are determined by the ACC, CPUC, and PSCN in general rate cases and
are derived using rate base, cost of service, and cost of capital experienced in
a historical test year, as adjusted in Arizona and Nevada, and projected for a
future test year in California. The FERC regulates the northern Nevada
transmission and LNG storage facilities of Paiute and the rates it charges for
transportation of gas directly to certain end-users and to various local
distribution companies (LDCs). The LDCs transporting on Paiute's system are:
Sierra Pacific Power Company (Reno and Sparks, Nevada), Washington Water Power
Company (South Lake Tahoe, California), and Southwest Gas Corporation (North
Lake Tahoe, California and various locations throughout northern Nevada).
 
     Rates charged to customers vary according to customer class and are fixed
at levels allowing for the recovery of all prudently incurred costs, including a
return on rate base sufficient to pay interest on debt, preferred dividends, and
a reasonable return on common equity. The Company's rate base consists generally
of the original cost of utility plant in service, plus certain other assets such
as working capital and inventories, less accumulated depreciation on utility
plant in service, net deferred income tax liabilities, and certain other
deductions. The Company's rate schedules in all of its service areas contain
purchased gas adjustment (PGA) clauses which permit the Company to adjust its
rates as the cost of purchased gas changes. Generally, the Company's tariffs
provide for annual adjustment dates for changes in purchased gas costs. However,
the Company may request to adjust its rates more often than once each year, if
conditions warrant. These changes have no significant impact on the Company's
profit margin. See additional discussion of recent PGA filings in Natural Gas
Operations -- Capital Resources and Liquidity of MD&A.
 
     The table below lists the docketed general rate filings initiated and/or
completed within each ratemaking area in 1995 and the first quarter of 1996:
 
<TABLE>
<CAPTION>
                                                                                         MONTH
                                                                                      FINAL RATES
            RATEMAKING AREA                  TYPE OF FILING         MONTH FILED        EFFECTIVE
- ---------------------------------------  ----------------------    --------------    --------------
<S>                                      <C>                       <C>               <C>
California:
  Northern.............................  Operational attrition     November 1995      January 1996
  Northern & Southern..................    General rate case        January 1994      January 1995
Nevada:
  Northern & Southern..................    General rate case       December 1995           --
FERC:
  Paiute...............................    General rate case        October 1992     April 1993(1)
</TABLE>
 
- ---------------
(1) Interim rates reflecting the increased revenues became effective in April
    1993. The rates were subject to refund until a final order was issued in
    January 1995.
 
     See Natural Gas Operations -- Rates and Regulatory Proceedings of MD&A for
a discussion of the financial impact of recent general rate cases.
 
COMPETITION
 
     Electric utilities are the Company's principal competitors for the
residential and small commercial markets throughout the Company's service areas.
Competition for space heating, general household, and small commercial energy
needs generally occurs at the initial installation phase when the
customer/builder typically makes the decision as to which type of equipment to
install and operate. The customer will generally continue to use the chosen
energy source for the life of the equipment. As a result of its success in these
markets, the Company has experienced consistent growth among the residential and
small commercial customer classes.
 
     Unlike residential and small commercial customers, certain large
commercial, industrial, and electric generation customers have the capability to
switch to alternative energy sources. The Company has been successful in
retaining these customers by setting rates at levels competitive with
alternative energy sources
 
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<PAGE>   8
 
such as fuel oils and coal. As a result, management does not anticipate any
material adverse impact on its operating margin. The Company maintains no
backlog on its orders for gas service.
 
     The Company continues to compete with interstate transmission pipeline
companies, such as El Paso Natural Gas Company (El Paso), Kern River Gas
Transmission Company (Kern River), and Tuscarora Gas Transmission Company, to
provide service to end-users. End-use customers located in close proximity to
these interstate pipelines pose a potential bypass threat and, therefore,
require the Company to closely monitor each customer's situation and provide
competitive service in order to retain the customer.
 
     The Company has maintained an intensive effort to mitigate bypass risks
through the use of discounted transportation contract rates, special long-term
contracts with electric generation and cogeneration customers, and new tariff
programs. One such program currently in use in Arizona and proposed in Nevada is
the special gas procurement program. This program provides an opportunity for
potential bypass customers to purchase all natural gas-related services as a
rebundled package, including the procurement of gas supply. The Company would
enter into gas supply contracts for eligible customers, which would not be
included in its system supply portfolio, and provide nomination and balancing
services on behalf of the customer. The Company's competitive response
initiatives, and otherwise competitive rates, have resulted in the Company
experiencing no significant financial impact from the threat of bypass.
 
DEMAND FOR NATURAL GAS
 
     Deliveries of natural gas by the Company are made under a priority system
established by each regulatory commission having jurisdiction over the Company.
The priority system is intended to ensure that the gas requirements of
higher-priority customers, primarily residential customers and nonresidential
customers who use 500 therms of gas per day or less, are fully satisfied on a
daily basis before lower-priority customers, primarily electric utility and
large industrial customers able to use alternative fuels, are provided any
quantity of gas or capacity.
 
     Demand for natural gas is greatly affected by temperature. On cold days,
use of gas by residential and commercial customers may be as much as eight times
greater than on warm days because of increased use of gas for space heating. To
fully satisfy this increased high-priority demand, gas is withdrawn from
storage, or peaking supplies are purchased from suppliers. If necessary, service
to interruptible lower-priority customers may also be curtailed to provide the
needed delivery system capacity.
 
     The Company has entered the residential cooling market by working with the
manufacturers of gas air conditioning units and the builders of new residential
units in the Arizona and southern Nevada areas. Gas air conditioning represents
an emerging market with the long-term potential for the Company to smooth its
currently seasonal earnings.
 
NATURAL GAS SUPPLY
 
     The Company believes that natural gas supplies and pipeline capacity will
remain plentiful and readily available. The Company primarily obtains its gas
supplies for its southern system from producing regions in New Mexico (San Juan
basin), and Texas (Permian basin). For its northern system, the Company
primarily obtains gas from Rocky Mountain producing areas and from Canada. The
Company arranges for transportation of gas to its Arizona, Nevada, and
California service territories through the pipeline systems of El Paso, Kern
River, Northwest Pipeline Corporation, and Southern California Gas Company
(SoCal). The Company continually monitors supply and pipeline capacity
availability on both short-term and long-term bases to ensure the continued
reliability of service to its customers.
 
     The Company's primary objective with respect to gas supply is to ensure
that adequate, as well as economical, supplies of natural gas are available from
reliable sources. The Company acquires its gas from a wide variety of sources,
including suppliers on the spot market and those who provide firm supplies over
short-term and longer-term durations. Balancing firm supply assurances against
the associated costs dictate a continually changing natural gas purchasing mix
within the Company's supply portfolio. The Company believes its balanced
portfolio provides security as well as the operating flexibility needed to meet
changing
 
                                        5
<PAGE>   9
 
market conditions. During 1995, the Company acquired gas supplies from over 70
suppliers. In managing its gas supply portfolio, the Company does not utilize
derivative financial instruments.
 
     The purchase of natural gas at the wellhead is not regulated as all price
ceilings were abolished by January 1993. The last few years have generally
demonstrated seasonal volatility in the price of natural gas, with higher prices
in the heating season and lower prices during the summer or off-peak consumption
period.
 
     The Company continues to evaluate natural gas storage as an option to
enable the Company to take advantage of seasonal price differentials in
obtaining natural gas from a variety of sources to meet the growing demand of
its customers.
 
ENVIRONMENTAL MATTERS
 
     Federal, state, and local laws and regulations governing the discharge of
materials into the environment have had little direct impact upon either the
Company or its subsidiaries. Environmental efforts, with respect to matters such
as protection of endangered species and archeological finds, have increased the
complexity and time required to obtain pipeline rights-of-way and sites for
other facilities. However, increased environmental legislation and regulation
are also perceived to be beneficial to the natural gas industry. Because natural
gas is one of the most environmentally safe fuels currently available, its use
will allow energy users to comply with stricter environmental standards. For
example, management is of the opinion that legislation, such as the Clean Air
Act Amendments of 1990 and the Energy Policy Act of 1992, has a positive effect
on natural gas demand, including provisions encouraging the use of natural gas
vehicles, cogeneration, and independent power production.
 
EMPLOYEES
 
     At December 31, 1995, the natural gas operations segment had 2,383 regular
full-time equivalent employees. The Company believes it has a good relationship
with its employees. No employees are represented by a union.
 
     Reference is hereby made to Item 10 in Part III of this report on Form 10-K
for information relative to the executive officers of the Company.
 
                                        6
<PAGE>   10
 
            DISCONTINUED OPERATIONS -- FINANCIAL SERVICES ACTIVITIES
 
     In January 1996, the Company reached an agreement to sell PriMerit to
Norwest Corporation for approximately $175 million in cash. The sale is expected
to be finalized in the third quarter of 1996, following receipt of shareholder
and various governmental approvals and satisfaction of other customary closing
conditions. Due to the intended sale of PriMerit during 1996, the financial
services activities are considered discontinued operations for consolidated
financial reporting purposes. The following Bank-related information and
disclosures present the Bank as a stand-alone entity, and are presented for
purposes of additional analysis. See Note 13 of the Notes to Consolidated
Financial Statements for the Bank's stand-alone financial information.
 
GENERAL DESCRIPTION
 
     The Bank is a federally chartered stock savings bank conducting business
through branch offices in Nevada. The Bank was organized in 1955 as Nevada
Savings and Loan Association which, in 1988, changed its name to PriMerit Bank
and its charter from a state chartered stock savings and loan association to a
federally chartered stock savings bank. Deposit accounts are insured to the
maximum extent permitted by law by the Federal Deposit Insurance Corporation
(FDIC) through the Savings Association Insurance Fund (SAIF). The Bank is
regulated by the Office of Thrift Supervision (OTS) and the FDIC, and is a
member of the Federal Home Loan Bank (FHLB) system.
 
     The Bank's principal business is to attract deposits from the general
public and make loans secured by real estate and other collateral to enable
borrowers to purchase, refinance, construct, or improve such property. Revenues
are derived from interest income on real estate loans; debt securities;
commercial, construction, corporate, and consumer loans; and to a lesser extent,
fees received in connection with loans and deposits. The Bank's major expense is
the interest paid on savings deposits and borrowings.
 
     Since December 31, 1990, total assets have declined from $2.7 billion to
$1.8 billion at December 31, 1995 as management restructured the balance sheet
to more effectively operate under the guidelines of the Financial Institutions
Reform, Recovery and Enforcement Act (FIRREA), the Federal Deposit Insurance
Corporation Improvement Act of 1991 (FDICIA), and as part of a long-term
strategy to optimize the Bank's size and earnings potential.
 
     The following table sets forth certain ratios for the Bank for each of the
periods stated:
 
<TABLE>
<CAPTION>
                                                              FOR THE YEAR ENDED DECEMBER 31,
                                                         -----------------------------------------
                                                         1995     1994     1993     1992     1991
                                                         ----     ----     ----     ----     -----
<S>                                                      <C>      <C>      <C>      <C>      <C>
Return on average assets (net income divided by average
  total assets)........................................  (0.2)%    0.4%    0.3 %    (0.5)%    (1.2)%
Return on average equity (net income divided by average
  stockholder's equity)................................  (1.8)%    4.4%    4.0 %    (6.0)%   (17.2)%
Equity-to-assets ratio (average stockholder's equity
  divided by average total assets).....................  10.0%    10.1%    8.2 %     7.5%      6.7%
</TABLE>
 
LENDING ACTIVITIES
 
     The Bank's loan portfolio totaled $1.1 billion at December 31, 1995,
representing 61 percent of total assets at that date. The loan portfolio
consists principally of intermediate-term and long-term real estate loans and,
to a lesser extent, secured and unsecured commercial, corporate, and
construction loans, and consumer loans including: recreational vehicle, marine,
mobile home, auto, equity, and home improvement loans. The contractual maturity
of loans secured by single-family dwellings has historically been 30 years,
although in recent years the Bank has made a number of loans with maturities of
23 years or less.
 
                                        7
<PAGE>   11
 
     The following table sets forth the composition of the loan portfolio by
type of loan at the dates indicated (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31,
                                     --------------------------------------------------------------
                                        1995          1994         1993         1992         1991
                                     ----------     --------     --------     --------     --------
<S>                                  <C>            <C>          <C>          <C>          <C>
Loans collateralized by real
  estate:
  Conventional single-family
     residential...................  $  531,147     $490,157     $436,853     $395,976     $497,448
  FHA and VA insured single-family
     residential...................      44,018       35,429       25,051       24,670       35,563
  Commercial mortgage..............     178,507      178,076      192,046      198,235      212,518
  Construction and land(1).........     137,728       90,992       82,638       91,344      120,776
                                     ----------     --------     --------     --------     --------
                                        891,400      794,654      736,588      710,225      866,305
Commercial secured.................      58,352       40,349       25,443       30,137       26,736
Commercial unsecured...............       4,678        2,317          354          384        3,966
Consumer installment...............     157,726      119,460       93,431       42,444       53,537
Consumer unsecured.................       7,128        6,570       19,309       18,371       16,568
Equity and property improvement
  loans............................      29,216       26,054       21,061       16,712       14,287
Deposit accounts...................       2,392        2,659        2,944        4,248        5,122
                                     ----------     --------     --------     --------     --------
                                      1,150,892      992,063      899,130      822,521      986,521
                                     ----------     --------     --------     --------     --------
Undisbursed proceeds...............     (68,646)     (41,702)     (48,251)     (44,937)     (44,544)
Allowance for estimated credit
  losses...........................     (16,353)     (17,659)     (16,251)     (17,228)     (12,061)
Premiums (discounts)...............       9,314        5,969        3,270         (125)      (1,294)
Deferred fees......................      (5,362)      (4,999)      (4,782)      (4,406)      (6,678)
Accrued interest...................       6,091        4,479        4,214        4,586        6,358
                                     ----------     --------     --------     --------     --------
                                        (74,956)     (53,912)     (61,800)     (62,110)     (58,219)
                                     ----------     --------     --------     --------     --------
Loans receivable, net..............  $1,075,936     $938,151     $837,330     $760,411     $928,302
                                     ==========     ========     ========     ========     ========
</TABLE>
 
- ---------------
(1) The Bank's construction and land loans are generally due in one year or
    less.
 
  Loan Origination and Credit Risk
 
     One of the Bank's primary businesses is to make and acquire loans secured
by real estate and other collateral to enable borrowers to purchase, refinance,
construct, and improve such property. These activities entail potential credit
losses, the size of which depends on a variety of economic factors affecting
borrowers and the real estate collateral. While the Bank has adopted
underwriting guidelines and credit review procedures to minimize credit losses,
some losses will inevitably occur. Therefore, periodic reviews are made of the
assets in an attempt to identify and deal appropriately with potential credit
losses.
 
     The Bank originates both fixed- and adjustable-rate loans in the
single-family residential, commercial mortgage, and consumer home equity
portfolios. The Bank's adjustable-rate loans in these portfolios are based on
various indices, including the one-year constant maturity Treasury yield, the
prime rate, the six-month London Interbank Offering Rate (LIBOR), and to a
lesser extent, the 11th District cost of funds. Other consumer loans are
generally fixed-rate, while construction and non-real estate commercial loans
are generally adjustable-rate prime-based loans.
 
     The Bank currently originates single-family residential (SFR)
adjustable-rate mortgage (ARM) loans which generally have an initial interest
rate below the current market rate and adjust to the applicable index plus a
defined spread, subject to caps, after the first repricing date, which is
generally at six months or one year. The Bank's ARM loans generally provide that
the maximum rate that can be charged cannot exceed the initial rate by more than
six percentage points. The annual interest rate adjustment on the Bank's ARM
loans is generally limited to two percentage points.
 
                                        8
<PAGE>   12
 
     Many of the other adjustable-rate loans contain limitations as to both the
amount and the interest rate change at each repricing date (periodic caps) and
the maximum rates the loan can be repriced at over the life of the loan
(lifetime caps). At December 31, 1995, periodic caps in the adjustable loan
portfolio ranged from 25 to 500 basis points. Lifetime caps ranged from 9.75 to
22 percent.
 
     The Bank's loan policies and underwriting standards are the primary means
used to reduce credit risk exposure. The loan approval process is intended to
assess both: (i) the borrower's ability to repay the loan by determining whether
the borrower meets the established underwriting criteria; and (ii) the adequacy
of the proposed collateral by determining whether the appraised value of (and,
if applicable, the cash flow from) the collateral property is sufficient for the
proposed loan. Under OTS regulations, management is held responsible for
developing, implementing, and maintaining prudent appraisal policies.
 
     The Bank reviews adherence to approved lending policies and procedures,
including proper approvals, timely completion of quarterly asset reviews, early
identification of problem loans, reviewing the quality of underwriting and
appraisals, tracking trends in asset quality, and evaluating the adequacy of the
allowance for estimated credit losses. To further control its credit risk, the
Bank monitors and manages its credit exposure in portfolio concentrations.
Portfolio concentrations, including collateral types, industry groups,
geographic locations, and loan types are assessed and the exposure is managed
through the establishment of limitations of aggregate exposures.
 
     The Bank maintains a comprehensive risk-rating system used in determining
classified assets and allowances for estimated credit losses. The system
involves an ongoing review of all assets containing an element of credit risk
including loans, real estate, and investment securities. The review process
assigns a risk rating to each asset reviewed based upon various credit criteria.
If the review indicates that it is probable that some portion of an asset will
result in a loss, the asset is written down to its expected recovery value. An
allocated valuation allowance is established for each asset reviewed which has
been assigned a risk classification. The allowance is determined, subject to
certain minimum percentages, based upon probability of default (in the case of
loans), and estimated ranges of recovery. An allowance for estimated credit
losses on classified assets not subject to a detailed review is established by
multiplying a percentage by the aggregate balances of the assets outstanding in
each risk category. The percentages assigned increase based on the degree of
risk and reflect management's estimate of potential future losses from assets in
a specific risk category. With respect to loans not subject to specific reviews,
principally single-family residential and consumer loans, the allowance is
established based upon historical loss experience. Additionally, an unallocated
allowance is established to reflect economic and other conditions that may
negatively affect the portfolio in the aggregate.
 
     As part of the regular asset review process, management reviews factors
relating to the possibility and magnitude of prospective loan and real estate
losses, including historical loss experience, prevailing market conditions, and
classified asset levels. The Bank is required to classify assets and establish
prudent valuation allowances in accordance with OTS regulations.
 
     Each loan portfolio contains unique credit risks for which the Bank has
developed policies and procedures to manage as follows:
 
     Single-Family Residential Lending.  SFR mortgage loans comprise 53 percent
of the loan portfolio at December 31, 1995, compared to 56 percent at December
31, 1994. This portfolio represents the largest lending component and is the
component which contains the least credit risk.
 
     It is the general policy of the Bank not to make SFR loans which have a
loan-to-value ratio in excess of 80 percent unless insured by private mortgage
insurance, Federal Housing Authority (FHA) insurance, or guaranteed by the
Veterans Administration (VA). Single-family loans are generally underwritten to
underwriting guidelines established by FHA, VA, Federal Home Loan Mortgage
Corporation (FHLMC), Federal National Mortgage Association (FNMA), or
preapproved private investors. On its SFR ARM loans offered with initial rates
below the current market rate, the Bank qualifies the applicants using the fully
indexed rate.
 
                                        9
<PAGE>   13
 
     During 1995, the Bank made $24.7 million of loans using brokers. These
loans were underwritten by the Bank using the same guidelines as loans
originated internally.
 
     The Bank requires title insurance on all loans secured by liens on real
property. The Bank also requires fire and other hazard insurance be maintained
in amounts at least equal to the replacement cost on all properties securing its
loans. Earthquake insurance, however, is not required.
 
     Consumer Lending.  Consumer loans include: installment loans secured by
auto, recreational vehicles, boats, and mobile homes; home equity and property
improvement loans; and loans secured by deposit accounts. Approximately 96
percent of the consumer loan portfolio is collateralized at December 31, 1995.
The credit risk of the consumer loan portfolio is managed through both the
origination function and the collection process. All consumer loan origination
and collection efforts, except for loans secured by deposits, are performed at a
central location in order to provide greater control in the process and a more
uniform application of credit standards.
 
     The Bank originates a majority of its installment loans through automobile,
recreational vehicle, and marine dealers. These loans are subject to credit
scoring and underwriting by Bank personnel. Additionally, credit reviews of the
dealers are performed on a periodic basis. The Bank pays dealers a fee for these
loans, in some cases through a broker, based upon the excess of the contractual
interest rate of the loan over the Bank's stated rate schedule. The Bank
utilizes a credit scoring model to assist in the analysis of loan applications
and credit reports. Additionally, as a follow up to the application process, a
review of selected originations is performed to monitor adherence to credit
standards.
 
     Premiums on loans primarily represent premiums paid to dealers for
originating consumer installment loans for the Bank. Prepayments of the loans
can adversely affect the yield of the installment portfolio should the unearned
premium be uncollectible from the dealer due to the contractual terms of the
dealer agreement or the creditworthiness of the dealer or broker.
 
     Commercial and Construction.  The commercial and construction loan
portfolios consist of amortizing mortgage loans on multi-family residential and
nonresidential real estate, construction and development loans secured by real
estate, and commercial loans secured by collateral other than real estate.
Commercial secured loans include corporate loans secured by inventory,
receivables, real estate, and collateral other than real estate. Residential
tract construction loans are generally underwritten with a stabilized
loan-to-value ratio of less than 85 percent, while commercial/income property
loans are generally underwritten with a ratio less than or equal to 75 percent.
 
     Construction loans involve risks different from completed project lending
because loan funds are advanced upon the security of the project under
construction, and if the loan goes into default, additional funds may have to be
advanced to complete the project before it can be sold. Moreover, construction
projects are subject to uncertainties inherent in estimating construction costs,
potential delays in construction time, market demand, and the accuracy of the
estimate of value upon completion.
 
     The Bank manages its risk in these portfolios through its credit
evaluation, approval, and monitoring processes. In addition to obtaining
appraisals on real estate collateral-based loans, a review of actual and
forecasted financial statements and cash flow analyses is performed. After such
loans are funded, they are monitored by obtaining and analyzing current
financial and cash flow information on a periodic basis.
 
     To further control its credit risk in this portfolio, the Bank monitors and
manages credit exposure on portfolio concentrations. The Bank regularly monitors
portfolio concentrations by collateral types, industry groups, loan types, and
individual and related borrowers. Such concentrations are assessed and exposures
managed through establishment of limitations of aggregate exposures. The Bank no
longer originates new construction and commercial loans outside of Nevada. At
December 31, 1995, 32 percent, or $18.5 million, of the Bank's outstanding
commercial secured loan portfolio consisted of loans to borrowers in the gaming
industry, with additional unfunded commitments of $9.9 million. These loans are
generally secured by real estate and equipment. The Bank's portfolio of loans,
collateralized by real estate, consists principally of real estate located in
Nevada, California, and to a lesser extent, Arizona. Collectibility is,
therefore, somewhat dependent on the economies and real estate values of these
areas and industries. Construction loans and
 
                                       10
<PAGE>   14
 
commercial real estate loans (including multi-family) generally have higher
default rates than single-family residential loans.
 
  Origination, Purchase, and Sale of Loans
 
     The Bank originates the majority of its loans within the state of Nevada;
however, under current laws and regulations, the Bank may also originate and
purchase loans or purchase participating interests in loans without regard to
the location of the secured property. The Bank originated $525 million and $466
million in new loans during 1995 and 1994, respectively, virtually all of which
were secured by property located in Nevada. As of December 31, 1995, 86 percent
of the loan portfolio was secured by property located in Nevada, 9 percent
secured by property located in California, and 5 percent secured by property
located in Arizona. The Bank originates real estate and commercial loans
principally through its in-house personnel, with some broker-originated SFR
loans. In 1994, the Bank purchased $41.9 million of single-family residential
whole loans, while no such purchases of loans occurred in 1995.
 
  Secondary Marketing Activity
 
     The Bank has been involved in secondary mortgage market transactions
through the sale of whole loans. In accordance with the Bank's Accounting
Policy, fixed-rate residential loans with maturities greater than 25 years have
been designated as held for sale. At December 31, 1995, $5.9 million of
residential loans are designated as held for sale. See Note 13 of the Notes to
Consolidated Financial Statements for additional discussion relating to such
loans.
 
     Under its loan participation and whole loan sale agreements, the Bank may
continue to service the loans and collect payments on the loans as they become
due. The amount of loans serviced for others was $430 million at December 31,
1995, compared to $415 million at year-end 1994, including $58 million and $68
million, respectively, of loans serviced for mortgage-backed securities (MBS)
originated and owned by the Bank. The Bank pays the participating lender, under
the terms of the participation agreement, a yield on the participant's portion
of the loan, which is usually less than the interest agreed to be paid by the
borrower. The difference is retained by the Bank as servicing income.
 
     In connection with mortgage loan sales, the Bank makes representations and
warranties customary in the industry relating to, among other things, compliance
with laws, regulations and program standards, and accuracy of information. In
the event of a breach of these representations and warranties, or under certain
limited circumstances, regardless of whether there has been such a breach, the
Bank may be required to repurchase such mortgage loans. Typically, any
documentation defects with respect to these mortgage loans that caused them to
be repurchased, are corrected and the mortgage loans are resold. Certain
repurchased mortgage loans may remain in the Bank's loan portfolio and, in some
cases, repurchased mortgage loans are foreclosed and the acquired real estate
sold.
 
     In May 1995, the Financial Accounting Standards Board (FASB) issued
Statement of Financial Accounting Standards (SFAS) No. 122, "Accounting for
Mortgage Servicing Rights." The statement eliminates the previous distinction
between purchased and originated mortgage servicing rights. The statement
requires an allocation of the cost basis of a mortgage loan between the mortgage
servicing rights and the loan when mortgage loans are sold or securitized and
the servicing is retained. The Bank adopted SFAS No. 122 effective April 1,
1995.
 
     The servicing rights are being amortized over their estimated lives using a
method approximating a level yield method. The book value of capitalized
mortgage servicing rights at December 31, 1995 was $350,000. As all servicing
rights capitalized during the year have been on new loan originations and no
significant change in interest rates or servicing rights values have occurred,
fair value is estimated to approximate book value at December 31, 1995.
 
                                       11
<PAGE>   15
 
  Loan Fees
 
     The Bank receives loan origination fees for originating loans and
commitment fees for making commitments to originate construction, income
property, and multi-family residential loans. It also receives loan fees and
charges related to existing loans, including prepayment fees, late charges, and
assumption fees. The amount of loan origination fees, commitment fees, and
discounts received varies with loan volumes, loan types, purchase commitments
made, and competitive and economic conditions. Loan origination and commitment
fees, offset by certain direct loan origination costs, are being deferred and
recognized over the contractual life of such loans as yield adjustments.
 
ASSET QUALITY
 
     Loan Impairment.  On January 1, 1995, the Bank adopted SFAS No. 114,
"Accounting by Creditors for Impairment of a Loan," and SFAS No. 118,
"Accounting by Creditors for Impairment of a Loan -- Income Recognition and
Disclosures." SFAS No. 114 requires the measurement of loan impairment to be
based on the present value of expected future cash flows discounted at the
loan's original effective interest rate or the fair value of the underlying
collateral on collateral-dependent loans. SFAS No. 118 allows a creditor to use
existing methods for recognizing interest income on impaired loans.
 
     Upon adoption of SFAS No. 114 in the first quarter of 1995, $2.9 million of
in-substance foreclosed assets were reclassified on the Bank's consolidated
statement of financial condition from real estate acquired through foreclosure
(REO-F) to loans receivable. SFAS No. 114 eliminated the in-substance
designation. No other financial statement impact resulted from the Bank's
adoption of SFAS No. 114.
 
     In general, under SFAS No. 114, interest income on impaired loans will
continue to be recognized by the Bank on the accrual basis of accounting, unless
the loan is greater than 90 days delinquent with respect to principal or
interest, or the loan has been partially or fully charged-off. Interest on loans
greater than 90 days delinquent is generally recognized on a cash basis.
Interest income on loans which have been fully or partially charged-off is
generally recognized on a cost-recovery basis; that is, all proceeds from the
loan payments are first applied as a reduction to principal before any income is
recorded.
 
     Interest payments received on impaired loans are recorded as interest
income unless collection of the remaining recorded investment is in doubt, in
which case payments received are recorded as reductions of principal.
 
     Nonperforming Assets.  Nonperforming assets are comprised of nonaccrual
assets, restructured loans, and REO-F. Nonaccrual assets are those on which
management believes the timely collection of interest or principal is doubtful.
Assets are transferred to nonaccrual status when payments of interest or
principal are 90 days past due or if, in management's opinion, the accrual of
interest should be ceased sooner. There are no assets on accrual status which
are over 90 days delinquent or past maturity.
 
     Nonaccrual assets are restored to accrual status when, in the opinion of
management, the financial condition of the borrower and/or debt service capacity
of the security property has improved to the extent that collectibility of
interest and principal appears assured and interest payments sufficient to bring
the asset current are received.
 
     Restructured loans represent loans for which the borrower is complying with
the terms of a loan modified as to rate, maturity, or payment amount.
 
                                       12
<PAGE>   16
 
 The following table summarizes nonperforming assets as of the dates indicated
                            (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                DECEMBER 31,
                                           -------------------------------------------------------
                                            1995        1994        1993        1992        1991
                                           -------     -------     -------     -------     -------
<S>                                        <C>         <C>         <C>         <C>         <C>
Nonaccrual loans past due 90 days or
  more:
  Mortgage loans:
     Construction and land...............  $   893     $   576     $ 1,233     $ 8,514     $ 8,904
     Single-family residences............    3,720       5,517       6,636       4,667       7,737
     Other mortgage loans................    3,315       5,696       6,728       3,736      10,388
                                           -------     -------     -------     -------     -------
                                             7,928      11,789      14,597      16,917      27,029
  Nonmortgage loans......................      637         904         184       2,164          87
Restructured loans.......................    9,320      16,768       2,842       1,190       1,229
                                           -------     -------     -------     -------     -------
     Total nonperforming loans...........   17,885      29,461      17,623      20,271      28,345
REO-F....................................    3,403       7,631       9,707      24,488      14,875
                                           -------     -------     -------     -------     -------
Total nonperforming assets...............  $21,288     $37,092     $27,330     $44,759     $43,220
                                           =======     =======     =======     =======     =======
Allowance for estimated credit losses....  $16,620     $17,659     $16,251     $17,228     $12,061
                                           =======     =======     =======     =======     =======
Allowance for estimated credit losses as
  a percentage of nonperforming loans....    92.93%      59.94%      92.21%      84.99%      42.55%
                                           =======     =======     =======     =======     =======
Allowance for estimated credit losses as
  a percentage of nonperforming assets...    78.07%      47.61%      59.46%      38.49%      27.91%
                                           =======     =======     =======     =======     =======
</TABLE>
 
     The increase in restructured loans in 1994 is a result of the
classification of $13.9 million of single-family residential loan modifications
made for borrowers with earthquake-related damage in California. Federal
agencies encouraged financial institutions to modify loan terms for certain
borrowers who were affected by the earthquake which occurred in January 1994.
The terms of these modifications were generally three- to six-month payment
extensions with no negative credit reporting regarding the borrower. These loans
were on a nonaccrual basis during the extension period. Current OTS regulations
allow for removal of these loans from the "troubled debt restructured"
designation, once the loan performs according to its contractual terms for
twelve consecutive months. The reduction of $7.4 million in restructured loans
from 1994 to 1995 was primarily due to earthquake-modified loans which met this
criteria.
 
     At December 31, 1995, all nonaccrual loans and REO-F are classified
substandard. Additionally, $3.1 million of restructured loans are classified
substandard.
 
     The amount of interest income that would have been recorded on the
nonaccrual and restructured assets if they had been current under their original
terms was $1.3 million for 1995. Actual interest income recognized on these
assets was $439,000, resulting in $856,000 of interest income foregone for the
year. See further discussion below in Provision and Allowance for Estimated
Credit Losses.
 
     Classified Assets.  OTS regulations require the Bank to classify certain
assets and establish prudent valuation allowances. Classified assets fall in one
of three categories -- "substandard," "doubtful," and "loss." In addition, the
Bank can designate an asset as "special mention."
 
     Assets classified as "substandard" are inadequately protected by the
current net worth or paying capacity of the obligor or the collateral pledged,
if any. Assets which are designated as "special mention" possess weaknesses or
deficiencies deserving close attention, but do not currently warrant
classification as "substandard."
 
     Provision and Allowance for Estimated Credit Losses.  The provision for
estimated credit losses is dependent upon management's evaluation as to the
amount needed to maintain the allowance for losses at a level considered
appropriate to the perceived risk of future losses. A number of factors are
weighed by management in determining the adequacy of the allowance, including
internal analyses of portfolio quality measures and trends, specific economic
and market conditions affecting valuation of the security properties, and
certain other factors. In addition, the OTS considers the adequacy of the
allowance for credit losses and
 
                                       13
<PAGE>   17
 
the net carrying value of real estate owned in connection with periodic
examinations of the Bank. The OTS has the ability to require the Bank to
recognize additions to the allowance or reductions in the net carrying value of
real estate owned based on their judgement at the time of such examinations. In
connection with the most recent examination by the OTS in 1995, no additional
allowances for losses were required to be recorded by the Bank.
 
     Activity in the allowances for estimated credit losses on loans, debt
securities, and real estate is summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                                       REAL          REAL
                                                                                      ESTATE        ESTATE
                                  CONSTRUCTION     NON-                              ACQUIRED      HELD FOR
                       MORTGAGE      & LAND      MORTGAGE    TOTAL        DEBT        THROUGH       SALE OR
                        LOANS        LOANS        LOANS      LOANS     SECURITIES   FORECLOSURE   DEVELOPMENT    TOTAL     RATIO*
                       --------   ------------   --------   --------   ----------   -----------   -----------   --------   ------
<S>                    <C>           <C>         <C>        <C>          <C>          <C>           <C>         <C>        <C>
Balance, 12/31/90....  $ 1,134       $ 1,299     $ 1,213    $  3,646     $    --      $ 4,087       $  4,158    $ 11,891
Provisions for
  estimated credit
  losses.............    5,835         2,643       3,580      12,058          --        1,686         49,010      62,754
Charge-offs..........     (844)       (1,121)     (2,111)     (4,076)         --       (6,914)       (49,564)    (60,554)
Recoveries...........      450            --         566       1,016          --          319             35       1,370
Transfers............     (583)           --          --        (583)         --          822             --         239
                       -------       -------     -------    --------     -------      -------       --------    --------
Balance, 12/31/91....    5,992         2,821       3,248      12,061          --           --          3,639      15,700    5.85%
Provisions for                     
  estimated credit                
  losses.............    1,903         6,460       5,766      14,129          --           --         18,309      32,438
Charge-offs..........     (717)       (4,262)     (5,837)    (10,816)         --           --        (20,490)    (31,306)
Recoveries...........      202           497       1,155       1,854          --           --              5       1,859
                       -------       -------     -------    --------     -------      -------       --------    --------
Balance, 12/31/92....    7,380         5,516       4,332      17,228          --           --          1,463      18,691    3.29%
Provisions for                    
  estimated credit                
  losses.............    4,634           172       1,406       6,212          --           --          1,010       7,222
Charge-offs..........   (3,652)       (3,100)     (3,060)     (9,812)         --           --         (1,538)    (11,350)
Recoveries...........      461           852       1,310       2,623          --           --             --       2,623
                       -------       -------     -------    --------     -------      -------       --------    --------
Balance, 12/31/93....    8,823         3,440       3,988      16,251          --           --            935      17,186    1.07%
Provisions for                    
  estimated credit                
  losses.............    2,954            71       4,205       7,230          --           --            163       7,393
Charge-offs..........   (2,601)       (1,499)     (3,787)     (7,887)         --           --         (1,412)     (9,299)
Recoveries...........      815           202       1,048       2,065          --           --            790       2,855
                       -------       -------     -------    --------     -------      -------       --------    --------
Balance, 12/31/94....    9,991         2,214       5,454      17,659          --           --            476      18,135    0.72%
Provisions for                    
  estimated credit                   
  losses.............   (2,609)         (151)      8,506       5,746       2,077          326            162       8,311
Charge-offs..........   (1,105)         (312)     (7,207)     (8,624)     (2,077)        (395)          (139)    (11,235)
Recoveries...........      145           172       1,255       1,572          --          336            364       2,272
                       -------       -------     -------    --------     -------      -------       --------    --------
Balance, 12/31/95....  $ 6,422       $ 1,923     $ 8,008    $ 16,353     $    --      $   267       $    863    $ 17,483    0.56%
                       =======       =======     =======    ========     =======      =======       ========    ========
</TABLE>
 
* Ratio = Net charge-offs to average loans and real estate outstanding (includes
          debt securities for 1995).
 
     Allocation of Allowance for Estimated Credit Losses.  The following is a
breakdown of allocated loan loss allowance amounts by major categories. However,
in management's opinion, the allowance must be viewed in its entirety.
 
<TABLE>
<CAPTION>
                                                                   DECEMBER 31,
                 ----------------------------------------------------------------------------------------------------------------
                         1995                   1994                   1993                   1992                   1991
                 --------------------   --------------------   --------------------   --------------------   --------------------
                             PERCENT                PERCENT                PERCENT                PERCENT                PERCENT
                             OF LOANS               OF LOANS               OF LOANS               OF LOANS               OF LOANS
                 ALLOWANCE   TO TOTAL   ALLOWANCE   TO TOTAL   ALLOWANCE   TO TOTAL   ALLOWANCE   TO TOTAL   ALLOWANCE   TO TOTAL
                  AMOUNT      LOANS      AMOUNT      LOANS      AMOUNT      LOANS      AMOUNT      LOANS      AMOUNT      LOANS
                 ---------   --------   ---------   --------   ---------   --------   ---------   --------   ---------   --------
                                                              (THOUSANDS OF DOLLARS)
<S>              <C>         <C>        <C>         <C>        <C>         <C>        <C>         <C>        <C>         <C>
Loans by type
Real estate.....  $ 6,422       69.1     $ 9,991       73.6     $ 8,823       76.9     $ 7,380       81.2     $ 5,992       82.4
Construction and
  land..........    1,923        6.3       2,214        5.1       3,440        4.0       5,516        4.3       2,821        4.8
Nonmortgage.....    8,008       24.6       5,454       21.3       3,988       19.1       4,332       14.5       3,248       12.8
                  -------      -----     -------      -----     -------      -----     -------      -----     -------      -----
    Total.......  $16,353      100.0     $17,659      100.0     $16,251      100.0     $17,228      100.0     $12,061      100.0
                  =======      =====     =======      =====     =======      =====     =======      =====     =======      =====
</TABLE>
 
REAL ESTATE DEVELOPMENT ACTIVITIES
 
     The Bank's investment in real estate held for development, net of allowance
for estimated losses, excluding REO-F, decreased from $28.1 million at December
31, 1991 to $247,000 at December 31, 1995.
 
                                       14
<PAGE>   18
 
The Bank's pretax loss from real estate operations was $196,000 in 1995,
$612,000 in 1994, and $910,000 in 1993.
 
     The Bank and its subsidiaries have ceased making investments in new real
estate development activities as a result of legislative and regulatory actions
which have placed certain restrictions on the Bank's ability to invest in real
estate. See Regulation -- General herein for additional discussion. The Bank and
its subsidiaries are continuing the sale and wind down of remaining real estate
investments.
 
INVESTMENT ACTIVITIES
 
     Federal regulations require thrifts to maintain certain levels of liquidity
and to invest in various types of liquid assets. The Bank invests in a variety
of securities, including commercial paper, certificates of deposit, U.S.
government and U.S. agency obligations, short-term corporate debt, municipal
bonds, repurchase agreements, and federal funds. The Bank also invests in longer
term investments such as MBS and collateralized mortgage obligations (CMO) to
supplement its loan production and to provide liquidity to meet unforeseen cash
outlays. Income from cash equivalents and debt securities provides a significant
source of revenue for the Bank, constituting 41 percent, 32 percent and 29
percent of total revenues for each of the years ended December 31, 1993, 1994
and 1995, respectively.
 
     In order to mitigate the interest rate risk (IRR) and credit risk exposure
in the debt security portfolio, the Bank has established guidelines within its
Investment Portfolio Policy for maximum duration, credit quality, concentration
limits per issuer, and counterparty capital requirements. The Investment
Portfolio Policy also sets forth the types of permissible investment securities
and unsuitable investment activities.
 
     Additionally, the debt security portfolio is subject to the Asset
Classification Policy of the Bank based on credit risk as determined by private
rating firms, such as Standard and Poor's Corporation and Moody's Investors
Services.
 
     On December 31, 1993, the Bank adopted SFAS No. 115, "Accounting for
Certain Investments in Debt and Equity Securities." In conjunction with
adoption, the Bank designated the vast majority of its debt security portfolio
as available for sale. At December 31, 1995 and 1994, no securities were
designated as "trading securities."
 
     In November 1995, the FASB issued a Special Report, "A Guide to
Implementation of Statement 115 on Accounting for Certain Investments in Debt
and Equity Securities" (the Special Report). The Special Report allowed a
one-time opportunity, until December 31, 1995, for institutions to reassess the
appropriateness of their designations of all securities and transfer debt
securities from the held-to-maturity portfolio before calendar year-end 1995,
without calling into question their intent to hold other debt securities to
maturity in the future. The Bank reassessed its securities designations in light
of the Special Report guidance and made no reclassifications.
 
     The following tables present the composition of the debt security
portfolios as of the dates indicated.
 
<TABLE>
<CAPTION>
                                                                          DECEMBER 31,
                                                                 ------------------------------
                                                                   1995       1994       1993
                                                                 --------   --------   --------
                                                                     (THOUSANDS OF DOLLARS)
<S>                                                              <C>        <C>        <C>
DEBT SECURITIES HELD TO MATURITY
Corporate issue MBS............................................  $ 43,964   $ 60,922   $ 69,660
U.S. Treasury securities.......................................    20,290     40,958         --
                                                                 --------   --------   --------
          Total................................................  $ 64,254   $101,880   $ 69,660
                                                                 ========   ========   ========
</TABLE>
 
                                       15
<PAGE>   19
 
<TABLE>
<CAPTION>
                                                                          DECEMBER 31,
                                                                 ------------------------------
                                                                   1995       1994       1993
                                                                 --------   --------   --------
                                                                     (THOUSANDS OF DOLLARS)
<S>                                                              <C>        <C>        <C>
DEBT SECURITIES AVAILABLE FOR SALE
GNMA -- MBS....................................................  $  5,933   $  6,397   $  9,672
FHLMC -- MBS...................................................   238,926    300,896    379,786
FNMA -- MBS....................................................    94,894    109,108    119,657
CMO............................................................    66,359     88,380     47,249
Corporate issue MBS............................................    16,309     19,517     24,106
Money market instruments.......................................        --         --     10,036
U.S. Treasury securities and obligations of
  U.S. Government corporations and agencies....................        --      5,102      5,220
                                                                 --------   --------   --------
          Total................................................  $422,421   $529,400   $595,726
                                                                 ========   ========   ========
</TABLE>
 
     The following schedule of the expected maturity of debt securities held to
maturity is based upon dealer prepayment expectations and historical prepayment
activity (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                          EXPECTED/CONTRACTUAL MATURITY
                                       --------------------------------------------------------------------
                                                   AFTER        AFTER         AFTER
                                       WITHIN     ONE YEAR    FIVE YEARS    TEN YEARS       TOTAL
                                         ONE     BUT WITHIN   BUT WITHIN    BUT WITHIN    AMORTIZED
          DECEMBER 31, 1995             YEAR     FIVE YEARS   TEN YEARS    TWENTY YEARS     COST      YIELD
- -------------------------------------  -------   ----------   ----------   ------------   ---------   -----
<S>                                    <C>         <C>          <C>            <C>         <C>         <C>
Corporate issue MBS..................  $11,360     $27,853      $4,596         $ 155       $43,964     7.99%
U.S. Treasury securities.............   20,290          --          --            --        20,290     7.37%
                                       -------     -------      ------         -----       -------     ----
          Total......................  $31,650     $27,853      $4,596         $ 155       $64,254     7.79%
                                       =======     =======      ======         =====       =======     ====
Yield................................     7.57%       7.91%       8.55%         7.23%         7.79%
                                       =======     =======      ======         =====       =======
</TABLE>
 
     The following schedule reflects the expected maturities of MBS and CMO and
the contractual maturity of all other debt securities available for sale. The
expected maturities of MBS and CMO are based upon dealer prepayment expectations
and historical prepayment activity (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                         EXPECTED/CONTRACTUAL MATURITY
                                    ------------------------------------------------------------------------
                                                 AFTER        AFTER         AFTER         TOTAL
                                                ONE YEAR    FIVE YEARS    TEN YEARS     ESTIMATED
                                     WITHIN    BUT WITHIN   BUT WITHIN    BUT WITHIN      FAIR
        DECEMBER 31, 1995           ONE YEAR   FIVE YEARS   TEN YEARS    TWENTY YEARS     VALUE     YIELD(1)
- ----------------------------------  --------   ----------   ----------   ------------   ---------   --------
<S>                                 <C>         <C>           <C>           <C>          <C>          <C>
GNMA -- MBS.......................  $  1,375    $  3,780      $   778       $    --      $  5,933     8.27%
FHLMC -- MBS......................    60,947     148,188       25,625         4,166       238,926     7.45%
FNMA -- MBS.......................    14,808      46,644       22,346        11,096        94,894     7.07%
CMO...............................    24,400      41,661          298            --        66,359     5.50%
Corporate Issue MBS...............     3,027      10,855        1,661           766        16,309     7.25%
                                    --------    --------      -------       -------      --------     ----
          Total...................  $104,557    $251,128      $50,708       $16,028      $422,421     7.06%
                                    ========    ========      =======       =======      ========     ====
Yield.............................      6.94%       7.05%        7.27%         7.18%         7.06%
                                    ========    ========      =======       =======      ========
</TABLE>
 
- ---------------
 
(1) The yields are computed based on amortized cost.
 
DEPOSIT ACTIVITIES
 
     Deposit accounts are the Bank's primary source of funds constituting 79
percent of the Bank's total liabilities at December 31, 1995. The Bank solicits
both short-term and long-term deposits in the form of transaction-based and
certificate of deposit accounts.
 
     The Bank's average retail deposit base, as a percent of average
interest-bearing liabilities, has remained steady during the past three years.
The total average deposit base declined in 1994 versus 1993 as a result of the
sale of the Bank's Arizona deposits in 1993. See Note 13 of the Notes to
Consolidated Financial Statements for further discussion of the Arizona sale.
Average retail deposits, as a percentage of average interest-bearing
liabilities, were 79 percent in 1995, compared to 80 percent in 1994 and 79
percent in 1993.
 
                                       16
<PAGE>   20
 
The Bank has emphasized retail deposits over wholesale funding sources in an
effort to reduce the volatility of its cost of funds. Additionally, the Bank has
emphasized growth in transaction-based accounts versus term accounts in order to
reduce its overall cost of funds.
 
     The Bank's deposits increased $26 million during 1995. This growth was
principally in transaction-based accounts which increased by $27 million, offset
by a decrease of $1 million in certificates of deposit. During 1995, the Bank
offered new and restructured money market demand account (MMDA) products in
order to encourage this growth and minimize loss of deposits to competitive
products offered by other financial intermediaries.
 
     At December 31, 1995, the Bank maintained over $419 million in collateral,
at market value, which could be borrowed against or sold to offset any deposit
outflows which could occur in a declining or low interest rate environment, or
as a result of the pending acquisition of the Bank. While some loss of deposits
may be experienced by the Bank, the anticipated volume is not expected to be
significant.
 
     The average balances in and average rates paid on deposit accounts for the
years indicated are summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                               1995                   1994                   1993
                                        ------------------     ------------------     ------------------
                                         BALANCE     YIELD      BALANCE     YIELD      BALANCE     YIELD
                                        ----------   -----     ----------   -----     ----------   -----
<S>                                     <C>          <C>       <C>           <C>       <C>          <C>
Noninterest-bearing demand deposits...  $   80,028     --      $   66,339      --      $   77,144     --
Interest-bearing demand deposits......     319,449   3.23%        327,020    2.67%        329,785   2.60%
Savings deposits......................      71,963   2.38%         84,584    2.52%         83,935   2.81%
Certificates of deposit...............     774,948   5.15%        751,572    4.42%        952,764   4.90%
                                        ----------   ----      ----------    ----      ----------   ----
                                        $1,246,388   4.17%     $1,229,515    3.59%     $1,443,628   3.99%
                                        ==========   ====      ==========    ====      ==========   ====
</TABLE>
 
     Certificates of deposit include approximately $171 million, $169 million,
and $152 million in time certificates of deposits in amounts of $100,000 or more
at December 31, 1995, 1994, and 1993, respectively. The following table
represents time certificates of deposits, none of which are brokered, in amounts
of $100,000 or more by time remaining until maturity as of December 31, 1995
(thousands of dollars):
 
<TABLE>
<CAPTION>

LESS THAN 3 MONTHS     3 MONTHS-6 MONTHS     6 MONTHS-1 YEAR     GREATER THAN 1 YEAR
- ------------------     -----------------     ---------------     -------------------
<S>                    <C>                   <C>                 <C>
     $ 60,121               $29,724              $35,798               $45,696
     ========               =======              =======               =======
</TABLE>
 
BORROWINGS
 
     Sources of funds other than deposits have included advances from the FHLB,
reverse repurchase agreements, and other borrowings.
 
     FHLB Advances.  As a member of the FHLB system, the Bank may obtain
advances from the FHLB pursuant to various credit programs offered from time to
time. The Bank borrows these funds from the FHLB principally on the security of
certain of its mortgage loans. See Regulation -- Federal Home Loan Bank System
herein for additional discussion. Such advances are made on a limited basis to
supplement the Bank's supply of lendable funds, to meet deposit withdrawal
requirements and to lengthen the maturities of its borrowings. See Note 13 of
the Notes to Consolidated Financial Statements for additional discussion.
 
     Securities Sold Under Repurchase Agreements.  The Bank sells securities
under agreements to repurchase (reverse repurchase agreements). Reverse
repurchase agreements involve the Bank's sale of debt securities to a
broker/dealer with a simultaneous agreement to repurchase the same debt
securities on a specified date at a specified price. The initial price paid to
the Bank under reverse repurchase agreements is less than the fair market value
of the debt securities sold, and the Bank may be required to pledge additional
collateral if the fair market value of the debt securities sold declines below
the price paid to the Bank for these debt securities.
 
                                       17
<PAGE>   21
 
     Reverse repurchase agreements are summarized as follows (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                               1995       1994       1993
                                                             --------   --------   --------
    <S>                                                      <C>        <C>        <C>
    Balance at year end....................................  $140,710   $281,935   $259,041
    Accrued interest payable at year end...................     1,417      3,335      3,871
    Daily average amount outstanding during year...........   175,618    222,620    305,123
    Maximum amount outstanding at any month end............   282,374    281,935    367,859
    Weighted-average interest rate during the year.........      6.20%      4.95%      4.30%
    Weighted-average interest rate on year-end balances....      6.10%      6.37%      4.31%
</TABLE>
 
EMPLOYEES
 
     At December 31, 1995, the Bank had 601 full-time equivalent employees. No
employees are represented by any union or collective bargaining group and the
Bank considers its relations with its employees to be good.
 
COMPETITION
 
     The Bank experiences substantial competition in attracting and retaining
deposit accounts and in making mortgage and other loans. The primary factors in
competing for deposit accounts are interest rates paid on deposits, the range of
financial services offered, the quality of service, convenience of office
locations, and the financial strength of an institution. Direct competition for
deposit accounts comes from savings and loan associations, commercial banks,
money market mutual funds, credit unions, and insurance companies. During 1995,
the Bank experienced deposit outflows from certificate of deposit accounts as
customers sought higher yielding alternative investments in a low interest rate
environment. The Bank has sought to retain relationships with these customers by
establishing an agreement with a third party broker to offer uninsured
investment alternatives in the Bank's branches and through restructuring its
MMDA product offerings.
 
     The primary factors in competing for loans are interest rates, loan
origination fees, quality of service, and the range of lending services offered.
Competition for origination of first mortgage loans normally comes from savings
and loan associations, mortgage banking firms, commercial banks, insurance
companies, real estate investment trusts, and other lending institutions.
 
PROPERTIES
 
     The Bank occupies facilities at 25 locations in Nevada, of which 11 are
owned. The Bank leases the remaining facilities. The Bank opened a new branch in
the Las Vegas area in May of 1995 while consolidating another branch during the
year. See Note 13 of the Notes to Consolidated Financial Statements for a
schedule of net future minimum rental payments that have initial or remaining
noncancelable lease terms in excess of one year as of December 31, 1995.
 
REGULATION
 
  General
 
     In August 1989, FIRREA was enacted into law. FIRREA had and will continue
to have a significant impact on the thrift industry including, among other
things, imposing significantly higher capital requirements and providing funding
for the liquidation of insolvent thrifts. In December 1991, FDICIA was enacted
into law. This legislation included changes in the qualified thrift lender test,
deposit insurance assessments, and capital standards.
 
     Regulatory Infrastructure.  The Bank's principal supervisory agency is the
OTS, an agency reporting to the U.S. Treasury Department. The OTS is responsible
for the examination and regulation of all thrifts and for the organization,
incorporation, examination, and regulation of federally chartered thrifts.
 
     The FDIC is the Bank's secondary regulator and is the administrator of the
SAIF which generally insures the deposits of thrifts.
 
     Deposit Insurance Premiums.  During 1993, the FDIC implemented a risk-based
deposit insurance premium assessment. Under the regulation, annual deposit
insurance premiums ranging from 23 to 31 basis points are imposed on
institutions based upon the institution's level of capital and a supervisory
risk assessment. Congressional proposals are currently pending to decrease the
deposit insurance premiums after a one-time assessment is imposed to fully
capitalize the SAIF.
 
                                       18
<PAGE>   22
 
     Capital Standards.  Effective December 1989, the OTS issued the minimum
regulatory capital regulations (capital regulations) required by FIRREA.
 
     The capital regulations require that all thrifts meet three separate
capital standards as follows:
 
          1. A tangible capital requirement equal to at least 1.5 percent of
             adjusted total assets (as defined).
 
          2. A core capital requirement equal to at least three percent of
             adjusted total assets (as defined).
 
          3. A risk-based capital requirement equal to at least eight percent of
             risk-weighted assets (as defined).
 
     The OTS may establish, on a case by case basis, individual minimum capital
requirements for a thrift institution which may vary from the requirements which
would otherwise be applicable under the capital regulations. The OTS has not
established such minimum capital requirements for the Bank.
 
     A thrift institution which fails to meet one or more of the applicable
capital requirements is subject to various regulatory limitations and sanctions,
including a prohibition on growth and the issuance of a capital directive by the
OTS requiring the following: an increase in capital, a reduction of rates paid
on savings accounts, cessation of or limitations on deposit taking and lending,
limitations on operational expenditures, an increase in liquidity, and such
other actions as are deemed necessary or appropriate by the OTS. In addition, a
conservator or receiver may be appointed under certain circumstances.
 
     FDICIA requires federal banking regulators to take prompt corrective action
if an institution fails to satisfy minimum capital requirements. Under FDICIA,
capital requirements include a leverage limit, a risk-based capital requirement,
and any other measure of capital deemed appropriate by the federal banking
regulators for measuring the capital adequacy of an insured depository
institution. All institutions, regardless of their capital levels, are
restricted from making any capital distribution or paying management fees which
are not in capital requirement compliance or if such payment would cause the
institution to fail to satisfy minimum levels for any of its capital
requirements.
 
     Insured institutions are divided into five capital categories -- (1) well
capitalized, (2) adequately capitalized, (3) undercapitalized, (4) significantly
undercapitalized, and (5) critically undercapitalized. The categories are
defined as follows:
 
<TABLE>
<CAPTION>
                                                          CORE CAPITAL TO
                                          RISK-BASED         RISK-BASED           CORE
                CATEGORY                 CAPITAL RATIO         ASSETS         CAPITAL RATIO
    ---------------------------------    -------------    ----------------    -------------
    <S>                                   <C>                <C>                <C>
    Well capitalized.................        > or =10%          > or =6%           > or =5%
    Adequately capitalized...........     > or =8%<10%       > or =4%<6%        > or =4%<5%
    Undercapitalized.................      > or =6%<8%       > or =3%<4%        > or =3%<4%
    Significantly undercapitalized...              <6%               <3%                <3%
</TABLE>
 
- ---------------
 
Critically undercapitalized if tangible equity to total assets ratio < or =2%.
 
     Institutions must meet all three capital ratios in order to qualify for a
given category. At December 31, 1995, the Bank was classified as "well
capitalized." At December 31, 1995, under fully phased-in capital rules
applicable to the Bank at July 1, 1996, the Bank would have exceeded the
"adequately capitalized" total risk-based, tier 1 risk-based, and tier 1
leverage ratios by $53.2 million, $81.6 million, and $52.6 million,
respectively.
 
     In January 1993, the OTS issued a Thrift Bulletin limiting the amount of
deferred tax assets that can be used to meet capital requirements. Under the
bulletin, for purposes of calculating regulatory capital, net deferred tax
assets are limited to the amount which could be theoretically realized from
carryback potential plus the lesser of the tax on one year's projected earnings
or ten percent of core capital. Transitional provisions apply to deferred tax
assets existing at December 31, 1992, which are not subject to the limitation.
At December 31, 1995, the Bank has a net deferred tax liability and, therefore,
is not subject to the limitation. Management does not anticipate this regulation
will impact the Bank's compliance and capital standards in the foreseeable
future.
 
                                       19
<PAGE>   23
 
     In November 1994, the OTS announced its decision to reverse immediately its
1993 interim policy requiring associations to include unrealized gains and
losses, net of income taxes, on available for sale (AFS) debt securities in
regulatory capital. Under the revised OTS policy, associations exclude any
unrealized gains and losses, net of income taxes, on a prospective basis, on AFS
debt securities reported as a separate component of equity capital pursuant to
SFAS No. 115.
 
     The capital regulations specify that only the following elements may be
included in tangible capital: stockholder's equity, noncumulative perpetual
preferred stock, retained earnings, and minority interests in the equity
accounts of fully consolidated subsidiaries. Further, goodwill and investments
in and loans to subsidiaries engaged in activities not permitted by national
banks must be deducted from assets and capital. See Regulation -- General -- 
Separate Capitalization of Nonpermissible Activities herein for additional 
discussion.
 
     In calculating adjusted total assets under the capital regulations, certain
adjustments are made to exclude certain assets from tangible capital and to
appropriately account for the investments in and assets of both includable and
nonincludable activities.
 
     Core capital under the current regulations may include only tangible
capital, plus certain intangible assets up to a limit of 25 percent of core
capital, provided such assets are: (i) separable from the thrift's assets, (ii)
valued at an established market value through an identifiable stream of cash
flows with a high degree of certainty that the asset will hold this market value
notwithstanding the prospects of the thrift, and (iii) salable in a market that
is liquid. In addition, prior to January 1, 1995, certain qualifying
"supervisory" goodwill was includable as core capital. Under the regulation, on
January 1, 1995, none of the Bank's supervisory goodwill was includable in core
capital.
 
     Regarding the risk-based capital requirement, under the capital
regulations, assets are assigned to one of four "risk-weighted" categories (zero
percent, 20 percent, 50 percent or 100 percent) based upon the degree of
perceived risk associated with the asset. The total amount of a thrift's
risk-weighted assets is determined by multiplying the amount of each of its
assets by the risk weight assigned to it, and totaling the resulting amounts.
 
     The capital regulation also establishes the concept of "total capital" for
the risk-based capital requirement. As defined, total capital consists of core
capital and supplementary capital. Supplementary capital includes: (i) permanent
capital instruments such as cumulative perpetual preferred stock, perpetual
subordinated debt, and mandatory convertible subordinated debt (capital notes);
(ii) maturing capital instruments such as subordinated debt, intermediate-term
preferred stock, mandatory convertible subordinated debt (commitment notes), and
mandatory redeemable preferred stock subject to an amortization schedule; and
(iii) general valuation loan and lease loss allowances up to 1.25 percent of
risk-weighted assets.
 
     In 1994, the OTS issued a regulation which added a component to an
institution's risk-based capital calculation for institutions with interest rate
risk (IRR) exposure classified as "above normal." In 1995, the regulation was
indefinitely delayed and allowed "well capitalized" institutions, such as the
Bank, to utilize their internal model to measure the IRR capital component. As
measured by both the Bank's model and the OTS model, the Bank has a "normal"
classification of IRR exposure as defined in the delayed regulation. Had the
regulation been implemented, no capital deduction would have been required
during any period presented.
 
     See Note 13 of the Notes to Consolidated Financial Statements for the
calculation of the Bank's regulatory capital and related excesses as of December
31, 1995 and 1994.
 
     Separate Capitalization of Nonpermissible Activities.  For purposes of
determining a thrift's capital under all three capital requirements, its entire
investment in and loans to any subsidiary engaged in an activity not permissible
for a national bank must be deducted from the capital of the thrift. The capital
regulations provide for a transition period with respect to this provision.
During the transition period, a thrift is permitted to include in its
calculation the applicable percentage (as provided below) of the lesser of the
thrift's investments in and loans to such subsidiaries on: (i) April 12, 1989 or
(ii) the date on which the thrift's capital is being determined, unless the FDIC
determines with respect to any particular thrift that a lesser percentage should
be applied in the interest of safety and soundness.
 
                                       20
<PAGE>   24
 
     In July 1992, legislation was enacted which delayed the increased
transitional deduction from capital for real estate investments, and allowed
thrifts to apply to the OTS for use of a delayed schedule. The Bank applied for
and received approval for use of the delayed phase-out schedule. The Bank had
$674,000 in investments in and loans to nonpermissible activities at December
31, 1995. These investments, which fall under this section of FIRREA, will be
deductible from capital by 60 percent from July 1, 1995 to June 30, 1996 and
thereafter, totally deductible. Included in this amount are investments in real
estate, land loans, and certain REO-F.
 
     Lending Activities.  FIRREA limits the amount of commercial real estate
loans that a federally chartered thrift may make to four times its capital (as
defined). Based on core capital of $122 million at December 31, 1995, the Bank's
commercial real estate lending limit was $488 million. At December 31, 1995, the
Bank had $179 million invested in commercial real estate loans and, therefore,
this limitation should not unduly restrict the Bank's ability to engage in
commercial real estate loans.
 
     FIRREA conformed thrifts' loans-to-one-borrower limitations to those
applicable to national banks. After March 1995, thrifts generally are not
permitted to make loans to a single borrower in excess of 15 percent of the
thrift's Tier 1 and Tier 2 capital actually included in risk-based capital, plus
the allowance for loan and lease losses not included in Tier 2 capital, except
that a thrift may make loans-to-one-borrower in excess of such limits under one
of the following circumstances: (i) for any purpose, in an amount not to exceed
$500,000 and (ii) to develop domestic residential housing units, in an amount
not to exceed the lesser of $30 million, or 30 percent, of the thrift's
unimpaired capital and unimpaired surplus, provided the thrift meets fully
phased-in capital requirements and certain other conditions are satisfied. The
Bank was in compliance with the loans-to-one-borrower limitation of $21 million
at December 31, 1995. This limitation is not expected to materially affect the
operations of the Bank.
 
     In December 1992, the OTS issued a regulation (Real Estate Lending
Standards) as mandated by FDICIA, which became effective in March 1993. The
regulation requires insured depository institutions to adopt and maintain
comprehensive written real estate lending policies which include: prudent
underwriting standards; loan administration procedures; portfolio
diversification standards; and documentation, approval, and reporting
requirements. The policies must be reviewed and approved annually to ensure
appropriateness for current market conditions. The regulation also provides
supervisory loan-to-value limits for various types of real estate based loans.
Loans may be originated in excess of these limitations up to a maximum of 100
percent of total regulatory capital. The regulation has not made a material
impact on the Bank's lending operations.
 
     In August 1993, the OTS issued revised guidance for the classification of
assets and a new policy on the classification of collateral-dependent loans
(where proceeds from repayment can be expected to come only from the operation
and sale of the collateral). With limited exceptions, effective September 1993,
for troubled collateral-dependent loans where it is probable that the lender
will be unable to collect all amounts due, an institution must classify as
"loss" any excess of the recorded investment in the loan over its "value" and
classify the remainder as "substandard." The value of a loan is either the
present value of the expected future cash flows, the loan's observable market
price, or the fair value of the collateral. The policy did not materially impact
the Bank.
 
     The federal agencies regulating financial institutions issued a joint
policy statement in December 1993 providing quantitative guidance and
qualitative factors to consider in determining the appropriate level of
valuation allowances that institutions should maintain against various asset
portfolios. The policy statement also requires institutions to maintain
effective asset review systems and to document the institution's process for
evaluating and determining the level of its valuation allowance. Management
believes the Bank's current policies and procedures regarding valuation
allowances and asset review procedures are consistent with the policy statement.
 
     FDICIA amended the Qualified Thrift Lender (QTL) test prescribed by FIRREA
by reducing the qualified percentage to 65 percent and adding certain
investments as qualifying investments. A savings institution must meet the
percentage in at least 9 of every 12 months. At December 31, 1995, the Bank's
QTL
 
                                       21
<PAGE>   25
 
ratio was approximately 79.5 percent. A thrift that fails to meet the QTL test
must either become a commercial bank or be subject to a series of restrictions.
 
     Safety and Soundness Standards.  Pursuant to statutory requirements, the
OTS issued a proposed rule in November 1993, that prescribes certain "safety and
soundness standards." A final rule providing safety and soundness guidelines was
issued in August 1995. The standards are intended to enable the OTS to address
problems at savings associations before the problems cause significant
deterioration in the financial condition of the association. The regulation
provides operational and managerial standards for internal controls and
information systems; loan documentation; internal audit systems; credit
underwriting; interest rate exposure; asset growth; and compensation, fees, and
benefits. The regulation also provides for procedures for the submission of
compliance plans and the issuance of orders to correct deficiencies, if
necessary. This final rule will have no material adverse impact on the Bank.
 
  Federal Home Loan Bank System
 
     The FHLB system consists of 12 regional FHLB banks, which provide a central
credit facility primarily for member institutions. The Bank, as a member of the
FHLB of San Francisco, is required to own capital stock in that institution in
an amount at least equal to: 1 percent of the aggregate outstanding balance at
the beginning of the year of its outstanding residential mortgage loans, home
purchase contracts, and similar obligations; 0.3 percent of total assets; or 5
percent of its advances from the FHLB, whichever is greater. The Bank is in
compliance with this requirement, with an investment in FHLB stock at December
31, 1995, of $11.1 million.
 
  Liquidity
 
     The Bank is required to maintain an average daily balance of liquid assets
equal to at least five percent of its liquidity base (as defined in the
Regulation) during the preceding calendar month. The Bank is also required to
maintain an average daily balance of short-term liquid assets equal to at least
one percent of its liquidity base. The Bank has complied with these regulatory
requirements and maintains a ratio substantially higher than the requirement due
to its higher level of transaction accounts relative to a traditional thrift.
For the month of December 1995, the Bank's liquidity ratios were 11.9 percent
and 6.5 percent, respectively.
 
  Investments
 
     A Federal Financial Institutions Examinations Council Supervisory Policy
Statement on Securities Activities (Policy Statement): (1) addresses the
selection of securities dealers, (2) requires depository institutions to
establish prudent policies and strategies for securities transactions, (3)
defines securities trading or sales practices that are viewed by the agencies as
being unsuitable when conducted in an investment portfolio, (4) indicates
characteristics of loans held for sale or trading, and (5) establishes a
framework for identifying when certain mortgage derivative products are
high-risk mortgage securities which must be held either in a trading or held for
sale account. Management believes that items (1) through (4) have not unduly
restricted the operating strategies of the Bank. Under item (5), the Bank will
have to apply the specified tests to any mortgage derivative product, including
CMO, Real Estate Mortgage Investment Conduits (REMIC), CMO and REMIC residuals,
and stripped MBS purchases in the future.
 
  Insurance of Deposits
 
     The Bank's deposits are insured by the FDIC through the SAIF up to the
maximum amount permitted by law, currently $100,000 per insured depositor. The
SAIF required quarterly insurance premium payments beginning in 1995 instead of
semi-annual payments as in prior years. Legislation is pending to provide for a
one-time special assessment of approximately 75 to 79 basis points on SAIF
insured deposits. See Regulation -- General -- Deposit Insurance Premiums herein
for additional discussion of insurance premiums to be paid by SAIF members.
 
     Insurance of deposits may be terminated by the FDIC, after notice and
hearing, upon a finding by the FDIC that a thrift has engaged in unsafe or
unsound practices, or is in an unsafe or unsound condition to
 
                                       22
<PAGE>   26
 
continue operations, or has violated any applicable law, regulation, rule,
order, or condition imposed by the OTS and FDIC. Management of the Bank is not
aware of any practice, condition, or violation that might lead to termination of
its deposit insurance.
 
  Community Reinvestment Act
 
     The Community Reinvestment Act of 1977 (CRA) and regulations promulgated
under the act encourage savings associations to help meet the credit needs of
the communities they do business in, particularly the credit needs of low and
moderate income neighborhoods. The OTS periodically evaluates the Bank's
performance under CRA. This evaluation is taken into account in determining
whether to grant approval for new branches, relocations, mergers, acquisitions,
and dispositions. The Bank received an "outstanding" evaluation in its most
recent examination.
 
     In April 1995, the Federal Reserve approved the final version of a new CRA
regulation, to be fully implemented in July 1997. Data collection for large
institutions, such as the Bank, began in January 1996. The regulation provides
for different examination procedures for different sized financial institutions,
to facilitate the basic differences in institutions structures and operations.
The intent of the regulation is to establish performance-based CRA examinations
that are complete and accurate but, to the maximum extent possible, mitigate the
compliance burden for institutions.
 
     Examiners will evaluate the CRA performance based on review of objective
information about the institution, its community and its competitors, available
demographic and economic data, and any information the institution chooses to
provide about lending, service, and investment opportunities in its assessment
area. The Bank implemented the new CRA regulation in 1995 and it had no material
impact.
 
  Federal Reserve System
 
     The Board of Governors of the Federal Reserve System (the Federal Reserve)
has adopted regulations that require depository institutions to maintain
noninterest earning reserves against their transaction accounts (primarily
negotiable order of withdrawal (NOW), demand deposit accounts, and Super NOW
accounts) and nonpersonal money market deposit accounts. These regulations
generally require that reserves of three percent be maintained against aggregate
transaction accounts in an institution, up to $47.7 million, and an initial
reserve of ten percent be maintained against that portion of total transaction
accounts in excess of such amount. In addition, an initial reserve of three
percent must be maintained on nonpersonal MMDA (which include borrowings with
maturities of less than four years). These accounts and percentages are subject
to adjustment by the Federal Reserve. The balances maintained to meet the
reserve requirements imposed by the Federal Reserve may be used to satisfy
liquidity requirements imposed by the OTS. At December 31, 1995, the Bank was
required to maintain approximately $5.3 million in noninterest earning reserves
and was in compliance with this requirement.
 
     As a creditor and financial institution, the Bank is subject to various
additional regulations promulgated by the Federal Reserve, including, without
limitation, Regulation B (Equal Credit Opportunity Act), Regulation E
(Electronic Funds Transfer Act), Regulation F (Interbank Liabilities),
Regulation Z (Truth-in-Lending Act), Regulation CC (Expedited Funds Availability
Act), Regulation O (Insider Lending), and Regulation DD (Truth-in-Savings Act).
 
                                       23
<PAGE>   27
 
                            HOLDING COMPANY MATTERS
 
     The Bank is a wholly owned subsidiary of the Company. As a unitary savings
bank holding company, the Company is subject to certain OTS regulation,
examination, supervision, and reporting requirements. The Bank is generally
prohibited from engaging in certain transactions with the Company and is subject
to certain OTS restrictions on the payment of dividends to the Company.
 
     In 1990, the OTS issued a regulation governing limitations of capital
distributions, including dividends. Under the regulation, a tiered system keyed
to capital is imposed on capital distributions. Insured thrifts fall under one
of three tiers.
 
     1. Tier 1 includes those thrifts with net capital exceeding fully phased-in
        requirements and with Capital, Assets, Management, Earnings, and
        Liquidity (CAMEL) ratings of 1 or 2. (The CAMEL system was established
        by the FDIC and adopted by the OTS to comprehensively and uniformly
        grade all thrifts with regard to financial condition, compliance with
        laws and regulations, and overall operating soundness.)
 
     2. Tier 2 includes those thrifts having net capital above their regulatory
        capital requirement, but below the fully phased-in requirement.
 
     3. Tier 3 includes those thrifts with net capital below the current
        regulatory requirement.
 
     Under the regulation, insured thrifts are permitted to make dividend
payments as follows:
 
     1. Tier 1 thrifts are permitted to make (without application but with
        notification) capital distributions of half their surplus capital (as
        defined) at the beginning of a calendar year plus 100 percent of their
        earnings to date for the year.
 
     2. Tier 2 thrifts can make (without application but with notification)
        capital distributions ranging from 25 to 75 percent of their net income
        over the most recent four quarter period, depending upon their level of
        capital in relation to the fully phased-in requirements.
 
     3. Tier 3 thrifts are prohibited from making any capital distributions
        without prior supervisory approval.
 
     Based upon these regulations, the Bank is classified as a Tier 1 thrift.
 
     In December 1994, the OTS proposed an amendment to the capital
distributions regulation to conform to the FDICIA prompt corrective action
system. Under the proposal, a savings association that is not held by a savings
and loan holding company and that has a CAMEL rating of "1" or "2" need not
notify the OTS before making a capital distribution. Other institutions that
remain adequately capitalized after making a capital distribution would be
required to provide notice to the OTS. Troubled and undercapitalized
institutions must file and receive approval from the OTS prior to making capital
distributions. This proposed regulation has no material impact on the Bank.
 
     Generally transactions between a savings and loan association and its
affiliates are required to be on terms as favorable to the association as
comparable transactions with nonaffiliates. In addition, certain of these
transactions are restricted to a percentage of the association's capital.
Affiliates of the Bank include the Company. In addition, a savings and loan
association may not lend to any affiliate engaged in activities not permissible
for a bank holding company or acquire the securities of such affiliates. It is
not permissible for bank holding companies to operate a gas utility. Therefore,
loans by the Bank to the Company and purchases of the Company's securities by
the Bank are prohibited.
 
     The Company, at the time that it acquired the Bank, agreed to assist the
Bank in maintaining levels of net worth required by the regulations in effect at
the time or as they were thereafter in effect so long as it controlled the Bank.
The enforceability of a net worth maintenance agreement of this type is
uncertain. However, under current regulations, a holding company that has
executed a capital maintenance obligation of this type may not divest control of
a thrift if the thrift has a capital deficiency, unless the holding company
either provides the OTS with an agreement to infuse sufficient capital into the
thrift to remedy the deficiency or the deficiency is satisfied. The OTS lifted
this net worth maintenance stipulation in June 1995, at the
 
                                       24
<PAGE>   28
 
request of the Company, since laws and regulations have been enacted which
govern prompt corrective action measures when the capitalization of a thrift is
deficient.
 
     The Company is prohibited from issuing any bond, note, lien, guarantee, or
indebtedness of any kind pledging its utility assets or credit for or on behalf
of a subsidiary which is not engaged in or does not support the business of the
regulated public utility. As a result, there are limitations on the Company's
ability to assist the Bank in maintaining levels of capital required by
applicable regulations.
 
     The Company also stipulated in connection with the acquisition of the Bank
that dividends paid by the Bank to the Company would not exceed 50 percent of
the Bank's cumulative net income after the date of acquisition, without approval
of the regulators. In addition, the Company agreed that the Bank would not at
any time declare a dividend that would reduce the Bank's regulatory net worth
below minimum regulatory requirements in effect at the time of the acquisition
or thereafter.
 
     In June 1995, the Bank requested the OTS lift the dividend stipulation,
since laws and regulations have been enacted since the Company's acquisition of
the Bank, in conjunction with FIRREA and FDICIA, which govern capital
distributions and prompt corrective action measures when the capitalization of a
thrift is deficient. In July 1995, the OTS terminated these stipulations such
that capital distributions by the Bank are now governed by the laws and
regulations governing all thrifts. In 1995, the Bank declared and paid $500,000
in cash dividends to the Company.
 
     Under terms of the definitive sale agreement with Norwest Corporation, the
Bank is limited in the amount of dividends payable to the Company through the
closing date of the sale to $375,000 per quarter through June 30, 1996 and up to
$3.5 million in the third quarter of 1996, dependant upon the timing of the
closing date of the sale.
 
ITEM 2.  PROPERTIES
 
     The information appearing in Part I, Item 1, pages 2 and 18 in this report
is incorporated herein by reference.
 
ITEM 3.  LEGAL PROCEEDINGS
 
     None.
 
ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
     None.
 
                                       25
<PAGE>   29
 
                                    PART II
 
ITEM 5.  MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
         MATTERS
 
     The principal markets on which the common stock of the Company is traded
are the New York Stock Exchange and the Pacific Stock Exchange. At March 15,
1996, there were 25,400 holders of record of common stock. The market price of
the common stock was $16 1/4 as of March 15, 1996. Prices shown are those as
quoted by the Wall Street Journal in the consolidated transaction reporting
system.
 
                  COMMON STOCK PRICE AND DIVIDEND INFORMATION
 
<TABLE>
<CAPTION>
                                                   1995                 1994             DIVIDENDS PAID
                                            ------------------    ------------------    -----------------
                                              HIGH       LOW       HIGH        LOW       1995       1994
                                            -------    -------    -------    -------    ------     ------
    <S>                                     <C>        <C>        <C>         <C>        <C>       <C>
    Fiscal Quarter
      First...............................  $15 1/4    $13 5/8    $19 3/8    $15 3/4    $0.205    $0.195
      Second..............................   14 7/8     13 5/8     18 5/8     15         0.205     0.195
      Third...............................   16 3/4     14         18 1/4     17 1/2     0.205     0.205
      Fourth..............................   18 3/8     14 7/8     17 5/8     13 3/4     0.205     0.205
                                                                                        ------    ------
                                                                                        $0.820    $0.800
                                                                                        ======    ======
</TABLE>
 
     See Holding Company Matters and Note 13 of the Notes to Consolidated
Financial Statements for a discussion of limitations on the Bank's ability to
make capital distributions to the Company.
 
                                       26
<PAGE>   30
 
ITEM 6.  SELECTED FINANCIAL DATA
 
                   CONSOLIDATED SELECTED FINANCIAL STATISTICS
                (THOUSANDS OF DOLLARS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                          YEAR ENDED DECEMBER 31,
                                       --------------------------------------------------------------
                                          1995         1994         1993         1992         1991
                                       ----------   ----------   ----------   ----------   ----------
<S>                                    <C>          <C>          <C>          <C>          <C>
Operating revenues...................  $  563,502   $  599,553   $  539,105   $  534,390   $  565,010
Operating expenses...................     505,090      510,863      461,423      448,815      498,753
                                       ----------   ----------   ----------   ----------   ----------
Operating income.....................  $   58,412   $   88,690   $   77,682   $   85,575   $   66,257
                                       ==========   ==========   ==========   ==========   ==========
Income from continuing operations....  $    2,654   $   23,524   $   13,751   $   32,214   $   18,291
Income (loss) from discontinued
  operations, net of tax (1).........     (17,536)       2,777        1,655      (14,553)     (32,466)
                                       ----------   ----------   ----------   ----------   ----------
Net income (loss)....................  $  (14,882)  $   26,301   $   15,406   $   17,661   $  (14,175)
                                       ==========   ==========   ==========   ==========   ==========
Net income (loss) applicable to
  common stock.......................  $  (15,189)  $   25,791   $   14,665   $   16,610   $  (15,500)
                                       ==========   ==========   ==========   ==========   ==========
Total assets at year end.............  $1,532,527   $1,453,582   $1,362,861   $1,265,380   $1,268,321
                                       ==========   ==========   ==========   ==========   ==========
Capitalization at year end
  Common equity......................  $  356,050   $  348,556   $  335,117   $  329,444   $  327,149
  Preferred and preference stocks....          --        4,000        8,058       15,316       22,574
  Trust originated preferred
     securities......................      60,000           --           --           --           --
  Long-term debt.....................     607,945      678,263      568,600      589,883      464,042
                                       ----------   ----------   ----------   ----------   ----------
                                       $1,023,995   $1,030,819   $  911,775   $  934,643   $  813,765
                                       ==========   ==========   ==========   ==========   ==========
Common stock data
  Return on average common equity....        (4.1)%        7.6%         4.4%         5.1%        (4.6)%
  Earnings (loss) per share
     Continuing operations...........  $     0.10   $     1.09   $     0.63   $     1.51   $     0.83
     Discontinued operations.........       (0.76)        0.13         0.08        (0.70)       (1.59)
                                       ----------   ----------   ----------   ----------   ----------
  Earnings (loss) per share..........  $    (0.66)  $     1.22   $     0.71   $     0.81   $    (0.76)
                                       ==========   ==========   ==========   ==========   ==========
  Dividends paid per share...........  $     0.82   $     0.80   $     0.74   $     0.70   $     1.05
  Payout ratio.......................         N/A           66%         104%          86%         N/A
  Book value per share at year end...  $    14.55   $    16.38   $    15.96   $    15.99   $    15.88
  Market value per share at year
     end.............................  $    17.63   $    14.13   $    16.00   $    13.75   $    10.63
  Market value per share to book
     value per share.................         121%          86%         100%          86%          67%
  Common shares outstanding at year
     end (000).......................      24,467       21,282       20,997       20,598       20,598
  Number of common shareholders at
     year end........................      25,133       20,765       21,851       22,943       24,396
</TABLE>
 
- ---------------
 
(1) Contribution from Financial Services Segment, including 1995 estimated loss
    on disposal.
 
                                       27
<PAGE>   31
 
                             NATURAL GAS OPERATIONS
                             (THOUSANDS OF DOLLARS)
 
<TABLE>
<CAPTION>
                                                          YEAR ENDED DECEMBER 31,
                                       --------------------------------------------------------------
                                          1995         1994         1993         1992         1991
                                       ----------   ----------   ----------   ----------   ----------
<S>                                    <C>          <C>          <C>          <C>          <C>
Sales................................  $  524,914   $  560,207   $  503,789   $  506,937   $  493,647
Transportation.......................      38,588       39,061       34,361       27,190       21,201
Other................................          --          285          955          263       50,162
                                       ----------   ----------   ----------   ----------   ----------
Operating revenue....................     563,502      599,553      539,105      534,390      565,010
Net cost of gas purchased............     227,456      249,922      212,290      214,293      276,954
                                       ----------   ----------   ----------   ----------   ----------
Operating margin.....................     336,046      349,631      326,815      320,097      288,056
Expenses
  Operations and maintenance.........     187,969      178,310      169,921      159,954      154,370
  Depreciation and amortization......      62,492       57,284       55,088       52,277       47,140
  Other..............................      27,173       25,347       24,124       22,291       20,289
                                       ----------   ----------   ----------   ----------   ----------
Operating income.....................  $   58,412   $   88,690   $   77,682   $   85,575   $   66,257
                                       ==========   ==========   ==========   ==========   ==========
Contribution to consolidated net
  income (loss)......................  $    2,654   $   23,524   $   13,751   $   32,214   $   18,291
                                       ==========   ==========   ==========   ==========   ==========
Total assets at year end.............  $1,357,034   $1,277,727   $1,194,679   $1,103,794   $1,106,917
                                       ==========   ==========   ==========   ==========   ==========
Net gas plant at year end............  $1,137,750   $1,035,916   $  954,488   $  906,420   $  854,254
                                       ==========   ==========   ==========   ==========   ==========
Construction expenditures............  $  166,183   $  141,390   $  113,903   $  102,517   $   76,871
                                       ==========   ==========   ==========   ==========   ==========
Cash flow, net
  From operating activities..........  $   97,754   $   84,074   $   50,437   $   81,457   $   93,925
  From investing activities..........    (163,718)    (141,547)    (116,246)    (103,065)     (96,588)
  From financing activities..........      71,056       61,422       67,488       (7,792)      27,351
                                       ----------   ----------   ----------   ----------   ----------
Net change in cash...................  $    5,092   $    3,949   $    1,679   $  (29,400)  $   24,688
                                       ==========   ==========   ==========   ==========   ==========
Total throughput (thousands of
  therms)
  Sales..............................     805,884      881,868      850,557      825,521      885,255
  Transportation.....................   1,016,011      914,791      725,023      651,141      509,478
                                       ----------   ----------   ----------   ----------   ----------
  Total throughput...................   1,821,895    1,796,659    1,575,580    1,476,662    1,394,733
                                       ==========   ==========   ==========   ==========   ==========
Weighted average cost of gas
  purchased ($/therm)................  $     0.21   $     0.30   $     0.29   $     0.26   $     0.26
Customers at year end................   1,029,000      980,000      932,000      897,000      870,000
Employees at year end................       2,383        2,359        2,318        2,285        2,243
Degree days -- actual................       2,084        2,427        2,470        2,261        2,470
Degree days -- ten year average......       2,326        2,387        2,401        2,375        2,419
</TABLE>
 
                                       28
<PAGE>   32
 
                 DISCONTINUED OPERATIONS -- FINANCIAL SERVICES
                             (THOUSANDS OF DOLLARS)
 
<TABLE>
<CAPTION>
                                                          YEAR ENDED DECEMBER 31,
                                       --------------------------------------------------------------
                                          1995         1994         1993         1992         1991
                                       ----------   ----------   ----------   ----------   ----------
<S>                                    <C>          <C>          <C>          <C>          <C>
Interest income......................  $  132,877   $  118,434   $  132,325   $  165,678   $  213,991
Interest expense.....................      73,300       59,790       75,076      111,917      158,788
                                       ----------   ----------   ----------   ----------   ----------
Net interest income..................      59,577       58,644       57,249       53,761       55,203
Provision for credit losses..........      (8,149)      (7,230)      (6,212)     (14,129)     (12,058)
                                       ----------   ----------   ----------   ----------   ----------
Net interest income after credit loss
  provision..........................      51,428       51,414       51,037       39,632       43,145
Net loss from real estate
  operations.........................        (196)        (612)        (910)     (15,286)     (50,477)
Noninterest income (expense).........     (37,086)     (36,738)     (40,231)     (34,073)     (29,822)
Impairment of excess of cost over net
  assets acquired....................     (11,823)          --           --           --           --
Income tax (expense) benefit.........      (5,528)      (6,391)      (6,345)         (91)       8,754
                                       ----------   ----------   ----------   ----------   ----------
Net income (loss) before cumulative
  effect of accounting change........      (3,205)       7,673        3,551       (9,818)     (28,400)
Cumulative effect of change in method
  of accounting for income taxes.....          --           --        3,045           --           --
                                       ----------   ----------   ----------   ----------   ----------
Net income (loss)....................  $   (3,205)  $    7,673   $    6,596   $   (9,818)  $  (28,400)
                                       ==========   ==========   ==========   ==========   ==========
Contribution to consolidated net
  income (loss)......................  $  (17,536)  $    2,777   $    1,655   $  (14,553)  $  (32,466)
                                       ==========   ==========   ==========   ==========   ==========
Total assets at year end.............  $1,775,019   $1,816,321   $1,751,419   $2,237,734   $2,356,057
                                       ==========   ==========   ==========   ==========   ==========
Interest-earning assets at year
  end................................  $1,646,659   $1,675,368   $1,582,720   $2,022,121   $2,152,494
                                       ==========   ==========   ==========   ==========   ==========
Interest-bearing liabilities at year
  end................................  $1,579,176   $1,629,419   $1,546,158   $2,058,663   $2,164,402
                                       ==========   ==========   ==========   ==========   ==========
Cash flow, net
  From operating activities..........  $   20,821   $   30,643   $   38,863   $    4,984   $   19,033
  From investing activities..........      25,750     (109,197)     460,069      139,110      316,303
  From financing activities..........     (50,743)      83,261     (511,910)     (94,768)    (317,704)
                                       ----------   ----------   ----------   ----------   ----------
  Net change in cash.................  $   (4,172)  $    4,707   $  (12,978)  $   49,326   $   17,632
                                       ==========   ==========   ==========   ==========   ==========
Average yield on loans...............        8.90%        8.58%        9.25%       10.14%       10.95%
Average yield on debt securities.....        6.85         6.20         5.93         7.15         8.74
Average yield on cash equivalents....        6.05         4.31         3.09         3.54         5.60
Average earning asset yield..........        8.08         7.45         7.28         8.32         9.56
Average cost of deposits.............        4.17         3.59         3.99         5.09         6.77
Average cost of borrowings...........        6.36         5.00         4.69         6.95         7.35
Average cost of funds (net of
  capitalized and transferred
  interest and cost of hedging
  activities)........................        4.66         3.90         4.14         5.58         7.03
Interest rate spread.................        3.42         3.55         3.14         2.74         2.53
Net yield on interest-earning
  assets.............................        3.62         3.69         3.15         2.70         2.47
</TABLE>
 
                                       29
<PAGE>   33
 
ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS
 
     The Company is principally engaged in the business of purchasing,
transporting, and distributing natural gas to residential, commercial, and
industrial customers in geographically diverse portions of Arizona, Nevada, and
California. The Company also engaged in financial services activities through
PriMerit Bank, a wholly owned subsidiary. In January 1996, the Company signed a
definitive agreement to sell PriMerit. The sale is expected to be finalized in
the third quarter of 1996, following receipt of shareholder and various
governmental approvals and satisfaction of other customary closing conditions.
Due to the intended sale of PriMerit during 1996, the financial services
activities are considered discontinued operations for consolidated financial
reporting purposes. See additional discussion of the sale below.
 
     In November 1995, the Company entered into a definitive agreement to
acquire Northern Pipeline Construction Co. (NPL), a full-service underground gas
pipeline contractor, for $24 million. NPL provides local gas distribution
companies with installation, replacement, and maintenance services for
underground natural gas distribution systems. The agreement is a stock-for-stock
exchange in which 100 percent of the stock of NPL will be acquired in exchange
for common stock of the Company. The acquisition is anticipated to be completed
during the first half of 1996.
 
     During 1995, the gas segment contributed income of $2.6 million, while
discontinued operations-financial services experienced a $17.5 million loss,
resulting in a total net loss of $14.9 million.
 
CAPITAL RESOURCES AND LIQUIDITY
 
     The capital requirements and resources of the Company generally are
determined independently for the natural gas operations and financial services
segments. Each business activity is generally responsible for securing its own
financing sources.
 
     Liquidity refers to the ability of an enterprise to generate adequate
amounts of cash to meet its cash requirements. General factors that could
significantly affect capital resources and liquidity in future years include
inflation, growth in the economy, changes in income tax laws, the level of
natural gas prices, interest rates, and changes in the ratemaking policies of
regulatory commissions.
 
     Inflation, as measured by the Consumer Price Index for all urban consumers
averaged 2.5 percent in 1995, 2.7 percent in 1994, and 2.7 percent in 1993. See
separate discussions for impact of inflation on natural gas operations and
discontinued operations -- financial services activities.
 
     The Company follows a common stock dividend policy which states that the
Company will pay common stock dividends at a prudent level that is within the
normal dividend payout range for its respective businesses, and that the
dividend will be established at a level considered sustainable in order to
minimize business risk and maintain a strong capital structure throughout all
economic cycles. The Company's quarterly common stock dividend was 20.5 cents
per share throughout 1995. The last change was on September 1, 1994, and
resulted in a 1 cent, or five percent, increase from the previous level.
 
     During 1995, the Company received $500,000 in cash dividends from the Bank.
The Company is not dependent upon such dividends to meet the gas segment's cash
requirements.
 
     Cash inflows from operating activities increased $13.7 million from 1994,
primarily due to the change in the unrecovered purchased gas cost account from
an amount receivable to an amount payable to customers. Cash outflows from
investing activities increased $22.2 million from 1994. This change is
attributed to construction expenditures related to the upgrade and expansion of
the Company's transmission and distribution facilities. Cash flows from
financing activities increased $9.6 million, a result of the issuance of common
stock, preferred securities, and long-term debt, offset somewhat by repayment of
short-term debt.
 
                                       30
<PAGE>   34
 
     Securities ratings issued by nationally recognized ratings agencies provide
a method for determining the credit worthiness of an issuer. The Company's debt
ratings are significant since long-term debt constitutes a significant portion
of the Company's capitalization. These debt ratings are a factor considered by
lenders when determining the cost of debt for the Company (i.e., the better the
rating, the lower the cost to borrow funds). Management has undertaken to
improve its credit ratings with the various agencies.
 
     In September 1995, Duff & Phelps upgraded the Company's long-term unsecured
debt from BB+ to BBB-. Duff & Phelps debt ratings range from AAA (highest credit
quality) to DD (defaulted debt obligation). The Duff & Phelps rating of BBB-
indicates that the Company's credit quality is considered sufficient for prudent
investment.
 
     In February 1995, Standard and Poor's (S&P) reaffirmed the Company's
unsecured long-term debt rating at BBB-. S&P debt ratings range from AAA
(highest rating possible) to D (obligation is in default). According to S&P, the
BBB- rating indicates the debt is regarded as having an adequate capacity to pay
interest and repay principal.
 
     In November 1994, Moody's upgraded the Company's unsecured long-term debt
rating from Ba1 to Baa3. Moody's debt ratings range from Aaa (best quality) to C
(lowest quality). Moody's applies a Baa3 rating to obligations which are
considered medium grade obligations, i.e., they are neither highly protected nor
poorly secured.
 
     A security rating is not a recommendation to buy, sell, or hold a security,
and it is subject to revision or withdrawal at any time by the assigning rating
organization. Each rating should be evaluated independently of any other rating.
 
     See separate discussions of Capital Resources and Liquidity for the natural
gas operations and discontinued operations -- financial services segments.
 
RESULTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                  CONTRIBUTION TO NET INCOME
                                                                   YEAR ENDED DECEMBER 31,
                                                               --------------------------------
                                                                 1995        1994        1993
                                                               --------     -------     -------
                                                                    (THOUSANDS OF DOLLARS)
<S>                                                            <C>          <C>         <C>
Continuing operations -- natural gas operations..............  $  2,654     $23,524     $13,751
Discontinued operations -- financial services................   (17,536)      2,777       1,655
                                                               --------     -------     -------
Net income (loss)............................................  $(14,882)    $26,301     $15,406
                                                               ========     =======     =======
</TABLE>
 
  1995 vs. 1994
 
     Loss per share for the year ended December 31, 1995 was $0.66, a $1.88
decline from earnings per share of $1.22 recorded for the year ended December
31, 1994. The loss was composed of per share earnings of $0.10 from natural gas
operations and a per share loss of $0.76 from discontinued operations. Average
shares outstanding increased by 2.1 million shares between years primarily
resulting from a 2.1 million share public offering in May 1995. See separate
discussions for an analysis of these changes. Dividends paid in 1995 were $0.82
per share reflecting the first full year of the dividend increase authorized by
the Board in 1994.
 
  1994 vs. 1993
 
     Earnings per share for the year ended December 31, 1994, were $1.22, a
$0.51 increase from earnings per share of $0.71 recorded for the year ended
December 31, 1993. Earnings per share were composed of per share earnings of
$1.09 from natural gas operations and $0.13 per share earnings from discontinued
operations. Average shares outstanding increased by 349,000 shares between
years. Dividends paid increased $0.06 to $0.80 per share, the result of the
Board's decision to increase quarterly dividends. See separate discussions for
an analysis of these changes.
 
                                       31
<PAGE>   35
 
RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS
 
     Recently issued accounting standards include SFAS No. 121, "Accounting for
the Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed
Of," which the Company adopted January 1, 1996, and SFAS No. 123, "Accounting
for Stock-Based Compensation." See Note 1 of the Notes to Consolidated Financial
Statements for a discussion of the impact of these new standards.
 
                             CONTINUING OPERATIONS
                             NATURAL GAS OPERATIONS
 
     The Company is engaged in the business of purchasing, transporting, and
distributing natural gas in portions of Arizona, Nevada, and California. Its
service areas are geographically as well as economically diverse. The Company is
the largest distributor in Arizona, selling and transporting natural gas in most
of southern, central, and northwestern Arizona, including the Phoenix and Tucson
metropolitan areas. The Company is also the largest distributor and transporter
of natural gas in Nevada, and serves the Las Vegas metropolitan area and
northern Nevada. In addition, the Company distributes and transports natural gas
in portions of California, including the Lake Tahoe area in northern California
and high desert and mountain areas in San Bernardino County.
 
     As of December 31, 1995, the Company had approximately 1,029,000
residential, commercial, industrial, and other customers, of which 605,000
customers were located in Arizona, 317,000 in Nevada, and 107,000 in California.
Residential and commercial customers represented over 99 percent of the
Company's customer base. During 1995, the Company added 49,000 customers, a five
percent increase, of which 22,000 customers were added in Arizona, 25,000 in
Nevada, and 2,000 in California. These additions are largely attributable to
continued population growth in the Company's service areas. Customer growth over
the past three years averaged five percent annually. Based on current
commitments from builders, the Company expects customer growth to approximate
five percent in 1996. During 1995, 57 percent of operating margin was earned in
Arizona, 32 percent in Nevada, and 11 percent in California. This pattern is
consistent with prior years and is expected to continue.
 
     Total gas plant increased from $1.2 billion to $1.6 billion, or at an
annual rate of eight percent, during the three-year period ended December 31,
1995. The increase is attributed to the investment in new transmission and
distribution plant in Arizona, Nevada, and California to meet the demand from
the Company's growing customer base.
 
CAPITAL RESOURCES AND LIQUIDITY
 
     The growth of the Company has required capital resources in excess of the
amount of cash flow generated from operating activities (net of dividends paid).
During 1995, capital expenditures were $166 million. Cash flow from operating
activities (net of dividends) provided $78 million, or approximately 47 percent,
of the required capital resources pertaining to these construction expenditures.
The remainder was provided from net external financing activities.
 
     In October 1995, the Securities and Exchange Commission declared effective
a $270 million shelf registration statement filed by the Company. This
registration statement replaced a $300 million shelf registration statement
which became effective in October 1994. Under the new registration statement,
the Company may offer, up to the registered amount, any combination of debt
securities, preferred stock, depositary shares, common stock, and preferred
securities.
 
     During 1995, the Company obtained external financing from a number of
sources. In January 1995, term loan facilities totaling $165 million were
refinanced with a new $200 million term loan facility. See Note 6 of Notes to
Consolidated Financial Statements for further discussion. In May 1995, the
Company completed an offering of 2.1 million primary shares of common stock. The
net proceeds from this offering were $28.5 million after deducting underwriting
discounts, commissions, and expenses. In October 1995, Southwest Gas Capital I
(the Trust), a subsidiary of the Company, completed an offering of 2.4 million
9.125% Trust Originated
 
                                       32
<PAGE>   36
 
Preferred Securities. The Trust was formed for the sole purpose of issuing
preferred securities and investing the proceeds thereof in an equivalent amount
of subordinated debt of the Company. The net proceeds from the offering were
$57.7 million after deducting underwriting discounts, commissions, and expenses.
The proceeds from these various financings were used to repay short-term
borrowings and finance utility construction.
 
     The Company currently estimates that construction expenditures for its
natural gas operations for the three-year period ending December 31, 1998 will
be approximately $470 million. It is currently estimated that cash flow from
operating activities (net of dividends) will fund approximately one-half of the
gas operation's total construction expenditures for the three-year period ending
December 31, 1998. A portion of the construction expenditure funding will be
provided by $36 million of funds held in trust from the 1993 Clark County,
Nevada, Series A issue and 1993 City of Big Bear Lake, California, Series A
issue industrial development revenue bonds (IDRB). The remaining cash
requirements are expected to be provided by external financing sources. The
timing, types, and amounts of these additional external financings will be
dependent on a number of factors, including conditions in the capital markets,
timing and amounts of rate relief, and growth factors in the Company's service
areas. These external financings may include the issuance of both debt and
equity securities, bank and other short-term borrowings, and other forms of
financing.
 
     Natural gas, labor, and construction are the categories most significantly
impacted by inflation. Changes to the Company's cost of gas are generally
recovered through purchased gas adjustment (PGA) mechanisms and do not
significantly impact net earnings. Labor is a component of the cost of service,
and construction costs are the primary component of rate base. In order to
recover increased costs, and earn a fair return on rate base, general rate cases
are filed by the Company, when deemed necessary, for review and approval by its
regulatory authorities. Regulatory lag, that is, the time between the date
increased costs are incurred and the time such increases are recovered through
the ratemaking process, can impact earnings. See Rates and Regulatory
Proceedings for discussion of recent rate case proceedings.
 
     The Company's rate schedules in all of its service areas contain PGA
clauses which permit the Company to adjust its rates as the cost of purchased
gas changes. The PGA mechanism allows the Company to change the gas cost
component of the rates charged to its customers to reflect increases or
decreases in the price expected to be paid to its suppliers and companies
providing upstream pipeline transportation service. In addition, the Company
uses this mechanism to either refund amounts overcollected or charge for amounts
undercollected as compared to the price paid by the Company for natural gas
during the period since the last PGA rate change went into effect. Generally,
the Company's tariffs provide for annual adjustment dates for changes in
purchased gas costs. However, the Company may request to adjust its rates more
often than once each year, if conditions warrant. These changes have no
significant impact on the Company's profit margin.
 
     While the changes relating to PGA have no significant net income impact,
the Company's cash flow can be impacted. At December 31, 1994, the Company had a
purchased gas cost asset of $15.2 million, reflecting payments to suppliers and
pipelines in excess of rates paid by customers during the year. However, gas
prices decreased dramatically, leading to an overcollection from customers of
$32.8 million at December 31, 1995, or a $48 million change during the
twelve-month period. The Company filed for PGA adjustments in five of its rate
jurisdictions during the last half of 1995 to lower the gas cost component of
rates charged in customer bills. The rates were also designed to refund the PGA
overcollected balance within one year, with the exception of northern and
southern Nevada, where a two-year period was approved. The aggregate amount of
 
                                       33
<PAGE>   37
 
these decreases on an annual basis was $55.9 million. The following table shows
the most recent PGA adjustments authorized by rate jurisdiction (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                     ANNUALIZED
                 JURISDICTION                    REVENUE ADJUSTMENT     PERCENTAGE     EFFECTIVE MONTH
- -----------------------------------------------  ------------------     ----------     ---------------
<S>                                              <C>                    <C>            <C>
Arizona:
  Central and Southern.........................       $(20,900)            (17)%         August 1995
California:
  Southern.....................................       $(13,100)            (21)%        October 1995
Nevada:
  Northern and Southern........................       $(21,900)            (13)%        November 1995
</TABLE>
 
     In February 1996, the Company filed for additional annualized PGA decreases
of $9.7 million in southern Nevada and $3.9 million in northern Nevada.
 
RESULTS OF NATURAL GAS OPERATIONS
 
<TABLE>
<CAPTION>
                                                                  YEAR ENDED DECEMBER 31,
                                                             ----------------------------------
                                                               1995         1994         1993
                                                             --------     --------     --------
                                                                   (THOUSANDS OF DOLLARS)
<S>                                                          <C>          <C>          <C>
Gas operating revenues.....................................  $563,502     $599,553     $539,105
Net cost of gas............................................   227,456      249,922      212,290
                                                             --------     --------     --------
  Operating margin.........................................   336,046      349,631      326,815
Operations and maintenance expense.........................   187,969      178,310      169,921
Depreciation and amortization..............................    62,492       57,284       55,088
Taxes other than income taxes..............................    27,173       25,347       24,124
                                                             --------     --------     --------
  Operating income.........................................    58,412       88,690       77,682
Other income (expense), net................................    (1,565)      (1,110)     (13,891)
                                                             --------     --------     --------
  Income before interest and income taxes..................    56,847       87,580       63,791
Net interest deductions....................................    53,354       49,461       41,832
Income tax expense.........................................       839       14,595        8,208
                                                             --------     --------     --------
  Contribution to consolidated net income (loss)...........  $  2,654     $ 23,524     $ 13,751
                                                             ========     ========     ========
</TABLE>
 
  1995 vs. 1994
 
     Contribution to consolidated net income decreased $20.9 million from 1994.
The decrease was primarily attributed to a decrease in operating margin between
periods. Increased operating costs and net interest deductions also contributed
to the decrease in gas segment contribution.
 
     Operating margin decreased $13.6 million, or four percent, during 1995
compared to 1994. Record-breaking warm weather throughout the Company's service
territories for much of the 1995 heating seasons was the primary factor
influencing the change. Temperatures in the Southwest were significantly above
normal in January, February, November and December, the Company's prime heating
months. As a result, operating margin was approximately $28 million less than
would be expected if normal weather had been experienced. However, record
customer growth and rate relief in southern Arizona and California partially
mitigated the negative impact of warmer weather, contributing an additional $15
million of operating margin between years. During 1995, the Company added 49,000
new customers, an increase of 5 percent, and expects similar growth in 1996
based on commitments for new service.
 
     Operations and maintenance expenses increased $9.7 million, or five
percent, reflecting increases in labor and maintenance costs, including the
incremental expenses associated with meeting the needs of the Company's growing
customer base.
 
                                       34
<PAGE>   38
 
     Depreciation expense and taxes other than income taxes increased $7
million, or nine percent, primarily due to an increase in average gas plant in
service of $130 million, or nine percent. This is attributable to capital
expenditures for the upgrade of existing operating facilities and the expansion
of the system to accommodate customer growth.
 
     Net interest deductions increased $3.9 million, or eight percent, in 1995,
after deducting interest costs associated with discontinued operations. The
change is attributed to an overall increase in average debt outstanding during
1995 of six percent, which consisted of a $70 million net increase in average
long-term debt offset by a $27 million decrease in average short-term debt. The
increase in long-term debt is attributed to the drawdown of IDRB funds
previously held in trust and replacement of the $165 million term facilities
with a new $200 million term loan facility. The proceeds from the common stock
issuance in May 1995 and the preferred securities issuance in October 1995 are
the primary factors for the decrease in average short-term debt. Higher interest
rates on variable-rate debt also contributed to the increase in net interest
deductions.
 
  1994 vs. 1993
 
     Contribution to consolidated net income was $23.5 million, an increase of
$9.8 million from 1993, the result of increased operating margin, partially
offset by increased operations and maintenance expenses, depreciation expense,
and general taxes. The recognition of the Arizona pipe replacement program
disallowances during 1993 also contributed to the change.
 
     Operating margin increased $22.8 million, or seven percent, during 1994
compared to 1993. This increase was primarily due to annualized rate relief
totaling $9.5 million in the Arizona, southern California, and federal rate
jurisdictions. The balance of the increase in margin is attributed to customer
growth and weather. Increased demand for natural gas, through the addition of
48,000 customers, directly benefitted margin. Differences in heating demand
between periods also positively impacted the change in margin, since weather
more closely approximated normal in 1994 compared to 1993's warmer than normal
conditions.
 
     Operations and maintenance expenses increased $8.4 million, or five
percent, reflecting a general increase in labor costs, increased costs of
materials and contractor services related to maintenance and other operating
expenses. These increases are attributable to the incremental costs of providing
service to the Company's steadily growing customer base.
 
     Depreciation expense and taxes other than income taxes increased $3.4
million, or four percent, primarily due to an increase in average gas plant in
service of $80 million, or six percent. This is attributable to capital
expenditures for the upgrade of existing operating facilities and the expansion
of the system to accommodate customer growth.
 
     Other expenses for 1993 include the Arizona pipe replacement program
disallowances. See Arizona Pipe Replacement Program Disallowances herein for
additional information.
 
     Net interest deductions increased $7.6 million, or 18 percent, in 1994.
Average debt outstanding during 1994 increased 13 percent compared to 1993, and
consisted of a $38 million increase in average long-term debt, net of funds held
in trust, and a $41 million increase in average short-term debt. The increase in
debt is attributed primarily to borrowings for construction expenditures and
operating activities as well as the drawdown of the IDRB funds previously held
in trust. Higher interest rates on the variable-rate term loan facilities and
short-term debt accounted for $2.7 million of the increase in net interest
deductions.
 
     Arizona Pipe Replacement Program Disallowances.  In August 1990, the ACC
issued its opinion and order on the Company's 1989 general rate increase
requests applicable to the Company's Central and Southern Arizona Divisions.
Among other things, the order stated that $16.7 million of the total capital
expenditures incurred as part to the Company's Central Arizona Division pipe
replacement program were disallowed for ratemaking purposes and all costs
incurred as part of the Company's Southern Arizona Division Pipe Replacement
program were excluded from the rate case and rate consideration was deferred to
the Company's next general rate application, which was filed in November 1990.
 
                                       35
<PAGE>   39
 
     The Company pursued various legal avenues seeking relief from the decision.
Ultimately, the Arizona Court of Appeals issued a Mandate ordering the Company
to comply with the ACC opinion and order. In December 1993, the Company wrote
off $15.9 million in gross plant related to the central and southern Arizona
pipe replacement program disallowances. The impact of these disallowances, net
of accumulated depreciation, tax benefits, and other related items, was a
noncash reduction to 1993 net income of $9.3 million, or $0.44 per share.
 
     In addition, as part of the July 1994 settlement related to a southern
Arizona general rate case, the Company agreed to write off an additional $3.2
million of gross plant in service related to the pipe replacement program. The
settlement also established a disallowance formula to be used in future rate
cases for expenditures related to defective materials and/or installation. The
impact of both Arizona disallowances, net of accumulated depreciation, tax
benefits, and other related items, was a noncash reduction to net income of $9.6
million, or $0.45 per share, $9.3 million of which was recognized in December
1993. The Company believes this settlement effectively resolves all financial
issues associated with currently challenged Arizona pipe replacement programs,
that it has adequately provided for future disallowances and does not anticipate
further material effects on results of operations as a result of gross plant
disallowances related to these pipe replacement programs.
 
RATES AND REGULATORY PROCEEDINGS
 
  California
 
     The Company filed a general rate application in January 1994 to increase
annual margin by $1.1 million for its southern and northern California rate
jurisdictions effective January 1995. In December 1994, the CPUC approved a
settlement agreement effective January 1995 authorizing a $1.1 million increase
in margin. The settlement, which is in effect through 1998, suspends the supply
adjustment mechanism (SAM) previously utilized in California. SAM was a
mechanism by which actual margin was adjusted to the margin authorized in the
Company's current tariff. The Company is now able to retain all margin generated
from additional volumes sold, but is also at risk for reductions in margin
resulting from lower than projected sales volumes. In addition, the settlement
suspends required annual attrition filings for southern California, but retains
attrition adjustments in northern California for certain safety-related
improvements. A safety-related operational attrition was filed in November 1995
related to northern California. The filing was approved effective January 1996,
authorizing a $223,000 increase in annual margin.
 
  Nevada
 
     In December 1995, the Company filed general rate cases with the PSCN
seeking approval to increase revenues by $15.8 million, or 12 percent, annually
for its southern Nevada rate jurisdiction and $5 million, or 10 percent,
annually for its northern Nevada rate jurisdiction. The Company is seeking
recovery of increased operating and maintenance costs, construction-related
financing, tax, insurance, and depreciation expenses associated with its
expanding customer base. The Company is also proposing changes in its current
rate design to reflect ongoing restructuring in the natural gas industry and to
remain competitive with third-party providers of service to large customers.
Rate relief is expected to become effective in the third quarter of 1996.
 
  Arizona
 
     In October 1993, the Company filed a rate application with the ACC seeking
approval to increase annual revenues by $10 million, or 9.3 percent, for its
southern Arizona jurisdiction. In July 1994, the ACC approved a settlement
agreement of the southern Arizona general rate case which specified a $4.3
million, or 3.9 percent, rate increase which became effective July 1994. The
Company also agreed not to file another general rate request for its southern
Arizona jurisdiction before November 1996.
 
     The Company anticipates filing for general rate relief in both southern and
central Arizona rate jurisdictions in late 1996. The amount to be requested has
yet to be determined. In Arizona, it takes approximately one year from the time
of filing to receive a final rate order.
 
                                       36
<PAGE>   40
 
  FERC
 
     In October 1992, Paiute filed a general rate case with the FERC requesting
approval to increase revenues by $6.8 million annually. Paiute sought recovery
of increased costs associated with its capacity expansion project that was
placed into service in February 1993. Interim rates reflecting the increased
revenues became effective in April 1993, which were subject to refund until a
final order was issued. In January 1995, the FERC approved a settlement
authorizing a $4.3 million increase in revenue. Refunds of approximately $5
million, including interest, were made to customers in March 1995. These refunds
were fully reserved as of December 31, 1994.
 
     Paiute intends to file a new general rate case in the second quarter of
1996. Under FERC rules, rates would be expected to go into effect, subject to
refund, six months from the date of filing.
 
             DISCONTINUED OPERATIONS -- FINANCIAL SERVICES SEGMENT
 
     In January 1996, the Company reached an agreement to sell PriMerit Bank to
Norwest Corporation for approximately $175 million in cash. The sale is expected
to be finalized in the third quarter of 1996, following receipt of shareholder
and various governmental approvals and satisfaction of other customary closing
conditions. Due to the intended sale of PriMerit, the financial services segment
is considered discontinued operations for consolidated financial reporting
purposes. The following Bank-related information and disclosures present the
Bank as a stand-alone entity, and are presented for purposes of additional
analysis. See Note 13 of the Notes to Consolidated Financial Statements for the
Bank's stand-alone financial information.
 
     The separate stand-alone financial results and disclosures reported for the
Bank on a going-concern basis differ from the results and disclosures reported
for the Bank as a discontinued operation. See Note 12 of the Notes to
Consolidated Financial Statements for reconciliations of Bank stand-alone
financial information to the amounts shown as discontinued operations in the
consolidated financial statements. In 1996, while the Company will continue, as
required, to disclose the ongoing operating results of the Bank through the
close of the proposed transaction, those amounts will not be realized or
recognized by the Company in its consolidated financial statements, consistent
with the terms of the sales agreement.
 
     The Bank recorded a net loss of $3.2 million for the year ended December
31, 1995 compared to net income of $7.7 million and $6.6 million for the years
ended December 31, 1994 and 1993, respectively. The 1995 net loss was
attributable to recording $11.8 million in goodwill impairment as a result of
the pending sale of the Bank to Norwest. Bank income from core banking
operations in 1995 was $11.9 million. The Bank's 1994 income from core banking
operations was $11.3 million compared to $7.9 million in 1993.
 
FINANCIAL AND REGULATORY CAPITAL
 
     At December 31, 1995, recorded stockholder's equity was $173.6 million
compared to $166.4 million at December 31, 1994. Stockholder's equity increased
$7.2 million compared to December 31, 1994, as a result of the increase in
unrealized gains, after tax, on debt securities available for sale partially
offset by a net loss of $3.2 million and cash dividends of $500,000 paid to the
Company during 1995. During 1995, the Bank's regulatory capital levels and
ratios decreased under each of the three fully phased-in FDICIA capital
standards. The decrease was primarily due to a decrease in the amount of
goodwill and real estate investments includable in regulatory capital.
 
     As discussed in Note 13 of the Notes to Consolidated Financial Statements,
as of December 31, 1995 and 1994, the Bank exceeded all three fully phased-in
minimum capital requirements under the regulatory capital regulations and is
considered "well capitalized" under FDICIA.
 
     During 1993, the Bank achieved "well capitalized" status through a
combination of increased capital from net income and unrealized gains from debt
securities, and the reduction of assets and goodwill through the Arizona sale.
It is management's intent to maintain and improve the level of capital through
earnings and the stabilization of the asset base. The Bank maintained its "well
capitalized" status throughout 1994 and 1995.
 
     Under SFAS No. 115, unrealized gains and losses, net of tax, on securities
available for sale are recorded as an adjustment to stockholder's equity. Under
OTS regulations in 1993, this component of equity was included as regulatory
capital under all three capital measures. In 1994, the OTS and other federal
banking regulators issued regulations excluding this component from regulatory
capital. Approximately $8.8 million of
 
                                       37
<PAGE>   41
 
unrealized gain was includable in capital for 1993, whereas, in 1994 and 1995,
no such gain (or loss) was included in regulatory capital.
 
DEPOSIT PREMIUMS
 
     The deposit accounts of savings associations, including those of PriMerit,
are insured to the maximum extent permitted by law by the FDIC through the SAIF.
The deposit accounts of commercial banks are separately insured by the FDIC
through the bank insurance fund (BIF). Commercial banks and savings associations
are separately assessed annual deposit insurance premiums. For savings
associations, the deposit premiums range from 23 to 31 cents per $100 of
deposits and, under current requirements, will remain at that level until the
SAIF is capitalized at 1.25 percent of insured deposits. The SAIF is not
expected to reach this level of capitalization for several years. The BIF has
reached the 1.25 percent capitalization level. As a result, the FDIC reduced the
deposit insurance premiums paid by most commercial banks insured by BIF to a
floor of $100. This regulatory change has given commercial banks a competitive
advantage over savings associations and has placed additional pressure on the
SAIF.
 
     A number of plans have been proposed in Congress to deal with the
undercapitalization of the SAIF. Several proposals provide for a one-time
special assessment, estimated to approximate 75 to 79 basis points, on
SAIF-insured deposits to fully capitalize the SAIF to 1.25 percent of insured
deposits and require federally chartered thrifts, like the Bank, to change to a
bank charter. These proposals would subsequently reduce annual premiums to
levels similar to those of BIF-insured commercial banks and eventually merge the
BIF and SAIF insurance funds. A change to a bank charter, under current law,
would require recapture of the Bank's tax bad debt reserve. Proposals to deal
with this issue include a "fresh start" approach, whereby thrifts would not need
to recapture reserves established prior to December 31, 1987. The Bank is unable
to predict if these proposals, or other proposals, will ultimately be approved
by Congress.
 
     Assuming a one-time special assessment and change in charter requirement
was approved by Congress and became law in 1996, and was immediately charged
against results of operations, the one-time assessment and tax bad debt
recapture would, most likely, have a material impact on the Bank's 1996 results
of operations. However, management believes the Bank would continue to be
classified as "well-capitalized" under fully phased-in FDICIA capital rules. In
addition, the Bank would not face any liquidity issues as a result of a one-time
assessment.
 
CAPITAL RESOURCES AND LIQUIDITY
 
     Liquidity is defined as the Bank's ability to have sufficient cash reserves
on hand and unencumbered assets, which can be sold or utilized as collateral for
borrowings at a reasonable cost, or with minimal losses. The Bank's debt
security portfolio provides the Bank with adequate levels of liquidity so that
the Bank is able to meet any unforeseeable cash outlays and regulatory liquidity
requirements.
 
     Potential liquidity demands may include funding loan commitments, deposit
withdrawals, and other funding needs. In order to achieve sufficient liquidity
for the Bank without taking a large liquid or illiquid position and avoiding
funding concentrations, the Bank has taken the following actions: 1) maintaining
lines of credit with authorized brokers/dealers; 2) managing the debt security
portfolio to ensure that maturities meet liquidity needs; 3) limiting investment
or lending activities at certain times; and 4) establishing maximum borrowing
limits for meeting liquidity needs.
 
     The OTS has issued regulations regarding liquidity requirements which state
that the Bank is required to maintain an average daily balance of liquid assets
equal to at least five percent of its liquidity base (as defined in the OTS
Regulations) during the preceding calendar month. The Bank is also required to
maintain an average daily balance of short-term liquid assets equal to at least
one percent of its liquidity base as defined in the regulations. Throughout
1995, the Bank exceeded both regulatory liquidity requirements. For the month of
December 1995, the Bank's liquidity ratios were 11.9 percent and 6.5 percent,
respectively. The Bank's liquidity ratio is substantially higher than the
regulatory requirement due to the Bank's increasing level of transaction
accounts. The regulatory requirement is aimed at a more traditional savings
institution which has a higher level of certificate of deposit accounts versus
transaction accounts.
 
                                       38
<PAGE>   42
 
     Borrowings, in the form of reverse repurchase agreements, decreased from
$282 million at December 31, 1994 to $141 million at December 31, 1995. During
1995, the Bank repaid $107 million in long-term borrowings, $18.7 million in
short-term borrowings, and $15.2 million in flex repurchase agreements.
 
     The Bank has adequate levels of liquidity and unencumbered assets to meet
its day-to-day operational needs and to meet the regulatory requirements for
liquidity. The daily operational liquidity needs of the Bank in 1995 were
primarily met through $494 million of repayments on loans and debt securities,
$118 million of borrowings from the FHLB, $38 million of loan sales, and $26
million in deposit growth.
 
     The Bank's borrowing capacity is a function of the availability of its
readily marketable, unencumbered assets and the Bank's financial condition.
Secured borrowings may be obtained from the FHLB in the form of advances and
from authorized broker/dealers in the form of reverse repurchase agreements. At
December 31, 1995, the Bank maintained in excess of $311 million of unencumbered
assets, with a market value of $313 million, which could be borrowed against, or
sold, to increase liquidity levels.
 
     The primary management objective of the investment portfolio is to invest
the excess funds of the Bank. This includes ensuring that the Bank maintains
adequate levels of liquidity so it is able to meet any unforeseeable cash
outlays. This task is accomplished by active investment in securities that
provide the greatest return, for a given price and credit risk, in order to
maximize the total return to the Bank.
 
     The secondary management objective of the investment portfolio is to serve
as the Bank's primary short-term tool to manage the IRR exposure of the
institution. The Bank's asset/liability management objective generally requires
a trade-off between achieving the highest profitability in terms of net interest
income, while maintaining acceptable levels of IRR. To accomplish these
objectives, management has designated the majority of the investment portfolio
as available for sale. This enables management the flexibility to change the
composition of the investment portfolio to quickly adjust the IRR exposure and
to take advantage of interest rate changes in the markets.
 
     As of December 31, 1995, the Bank's debt security portfolio was composed of
securities with a fair value of $486 million (amortized cost of $485 million)
with a yield of 7.16 percent compared to a debt security portfolio with a fair
value of $629 million (amortized cost of $646 million) yielding 6.79 percent at
December 31, 1994.
 
     During 1995, the debt security portfolio balance declined by $145 million.
The decline in the portfolio is primarily the result of sales, maturities, and
principal repayments during 1995.
 
     The Bank's assets and liabilities consist primarily of monetary assets
(cash, cash equivalents, debt securities, and loans receivable) and liabilities
(savings deposits and borrowings) which are, or will be converted into a fixed
amount of dollars in the ordinary course of business regardless of changes in
prices. Monetary assets lose purchasing power due to inflation, but this is
offset by gains in the purchasing power of liabilities, as these obligations are
repaid with inflated dollars.
 
     The level and movement of interest rates is of much greater significance.
Inflation is but one factor that can cause interest rate volatility and changes
in interest levels. The results of operations of the Bank are dependent upon its
ability to manage such movements. See Risk Management -- Interest Rate Risk
Management herein for additional discussion.
 
RISK MANAGEMENT
 
     The financial services industry has certain risks. In order to be
successful and profitable, in an increasingly volatile and competitive
marketplace, the Bank must accept some forms of risk and manage these risks in a
safe and sound manner. Generally, transactions that the Bank enters into require
the Bank to accept some measure of credit and interest rate risk, and utilize
equity capital. The Bank has established certain guidelines in order to manage
the Bank's assets and liabilities. These guidelines will help ensure that the
risks taken and consumption of capital are optimized to achieve maximum
profitability, while minimizing risks to equity and the federal deposit
insurance fund.
 
                                       39
<PAGE>   43
 
  Interest Rate Risk (IRR) Management
 
     For a complete discussion and additional disclosure of the Bank's methods
and tools for measuring and managing its IRR, see Note 13 of Notes to
Consolidated Financial Statements.
 
     At December 31, 1995, the Bank had financial assets of $1.7 billion with a
weighted average yield of 7.70 percent, and financial liabilities of $1.6
billion with a weighted average rate of 4.64 percent. The Bank's cumulative
one-year static gap was a negative $60 million, or 3.5 percent of financial
assets. The Bank's financial assets and financial liabilities are presented
according to their frequency of repricing, and scheduled and expected maturities
in the following table, also known as a static gap analysis (thousands of
dollars):
 
STATIC GAP AS OF DECEMBER 31, 1995
 
<TABLE>
<CAPTION>
                                                                          REPRICING SENSITIVITY AT
                                                                             DECEMBER 31, 1995
                                                                    ------------------------------------
                                PERCENT OF     TOTAL      YIELD/      WITHIN         1-5         OVER 5
                                  TOTAL       BALANCE     RATE        1 YEAR        YEARS        YEARS
                                ----------   ----------   -----     ----------     --------     --------
<S>                             <C>          <C>          <C>       <C>            <C>          <C>
FINANCIAL ASSETS
Cash and cash equivalents(1)...      7.0%    $  119,750    3.60%    $  119,750     $     --     $     --
Debt securities available for
  sale(2)......................     24.9        422,421    7.06        312,769      100,558        9,094
Debt securities held to
  maturity(2)..................      3.8         64,254    7.79         50,874       10,022        3,358
Loans receivable:
  Loans receivable held for
    sale.......................      0.3          5,855    7.96          5,855           --           --
  Adjustable-rate real
    estate(3)
    Construction and land......      4.1         69,082   10.02         68,846           77          159
    Other real estate..........     14.6        247,311    7.53        232,546       14,765           --
  Fixed-rate real estate(4)....     29.5        501,211    8.01         79,603      238,441      183,167
  Consumer, commercial and all
    other(4)...................     15.2        258,787    9.66        139,485      101,933       17,369
FHLB stock(5)..................      0.6         11,057    4.90         11,057           --           --
                                   -----     ----------   -----     ----------     --------     --------
         Total financial
           assets..............    100.0%     1,699,728    7.70%    $1,020,785     $465,796     $213,147
                                   =====                  =====     ----------     --------     --------
Nonfinancial assets............                  75,291
                                             ----------
    Total assets...............              $1,775,019
                                             ==========
FINANCIAL LIABILITIES
Deposits:
  Interest-bearing demand and
    money market deposits(6)...     20.4%    $  322,847    3.12%    $  322,847     $     --     $     --
  Certificates of deposit(1)...     49.2        776,660    5.34        552,586      203,918       20,156
  Savings deposits(6)..........      4.3         67,641    2.29         67,641           --           --
  Noninterest-bearing demand
    deposits(7)................      6.3         98,923      --         52,173       20,541       26,209
Borrowings:
  Advances from FHLB(1)........     10.4        164,400    6.68         35,000      126,000        3,400
  Securities sold under
    agreements to
    repurchase(8)..............      8.9        140,710    6.10        140,710           --           --
  Other(10)....................      0.5          7,995    7.80          7,995           --           --
                                   -----     ----------   -----     ----------     --------     --------
         Total financial
           liabilities.........    100.0%     1,579,176    4.64%     1,178,952      350,459       49,765
                                   =====                  =====     ----------     --------     --------
Impact of hedging-fixed(9).....                      --                 98,200      (55,050)     (43,150)
                                                                    ----------     --------     --------
Nonfinancial liabilities.......                  22,284
Stockholder's equity...........                 173,559
                                             ----------
    Total liabilities and
       stockholder's equity....              $1,775,019
                                             ==========
Maturity gap...................                                     $  (59,967)    $ 60,287     $120,232
                                                                    ==========     ========     ========
Cumulative gap.................                                     $  (59,967)    $    320     $120,552
                                                                    ==========     ========     ========
Cumulative gap as a percent of
  financial assets.............                                           (3.5)%         --%         7.1%
                                                                    ==========     ========     ========
</TABLE>
 
Note: Loans receivable exclude allowance for credit losses, discount reserves,
deferred loan fees, loans in process, and accrued interest on loans.
 
                                       40
<PAGE>   44
 
STATIC GAP ASSUMPTIONS AS OF DECEMBER 31, 1995
 
(1) Based on the contractual maturity or term to next repricing of the
    instrument(s).
 
(2) Maturity sensitivity is based upon characteristics of underlying loans.
    Portions represented by adjustable-rate securities are included in the
    "Within 1 Year" category, as underlying loans are subject to interest rate
    adjustment at least semiannually or annually. Portions represented by
    fixed-rate securities are based on contractual maturity, projected
    repayments, and projected prepayments of principal of the underlying loans.
 
(3) Adjustable rate loans are included in each respective category depending on
    the term to next repricing and projected repayments and prepayments of
    principal.
 
(4) Maturity sensitivity is based upon contractual maturity, and projected
    repayments and prepayments of principal.
 
(5) FHLB stock has no contractual maturity. The Bank receives quarterly
    dividends on all shares owned and the balance is therefore included in the
    "Within 1 Year" category. The amount of such dividends is not fixed and
    varies quarterly.
 
(6) Interest-bearing demand deposits, money market deposits, and savings
    deposits may be subject to daily interest rate adjustment and withdrawal on
    demand, and are therefore included in the "Within 1 Year" category.
 
(7) Noninterest-bearing demand deposits have no contractual maturity, and are
    included in each repricing category based on the Bank's historical attrition
    of such accounts.
 
(8) Floating-rate reverse repurchase agreements are included in the "Within 1
    Year" category. Principal repayments of flexible reverse repurchase
    agreements are based on the projected timing of construction or funding of
    the underlying project.
 
(9) Hedging consisted of fixed rate interest rate swaps as of December 31, 1995.
 
     While the static gap analysis is a useful asset/liability management tool,
it does not fully assess IRR. Static gap analysis does not address the effects
of customer options (such as early withdrawal of time deposits, withdrawal of
deposits with no stated maturity, and mortgagors' options to prepay loans) and
Bank strategies (such as delaying increases in interest rates paid on certain
interest-bearing demand and money market deposit accounts) on the Bank's net
interest income, net income, and market value of the Bank's assets and
liabilities. In addition, the static gap analysis assumes no changes in the
spread relationships between market rates on interest-sensitive financial
instruments (basis risk), or in yield curve relationships. Therefore, a static
gap analysis is only one tool with which management analyzes IRR, and must be
reviewed in conjunction with other asset/liability management reports.
 
  Credit Risk Management
 
     Management has also established certain guidelines and criteria in order to
manage the credit risk of the Bank's debt security portfolios, including
concentration limits, credit rating; and geographic distribution requirements.
The following table presents the credit quality of the debt security portfolios:
 
<TABLE>
<CAPTION>
                                                 AT DECEMBER 31, 1995        AT DECEMBER 31, 1994
                       RATING:                  PERCENTAGE OF PORTFOLIO     PERCENTAGE OF PORTFOLIO
        --------------------------------------  -----------------------     -----------------------
        <S>                                     <C>                         <C>
        AAA...................................            93.0%                       91.2%
        AA....................................             2.5                         2.7
        A.....................................             1.0                         1.0
        BBB...................................              --                         1.3
        Other.................................             3.5                         3.8
                                                         -----                       -----
        Total.................................           100.0%                      100.0%
                                                         =====                       =====
</TABLE>
 
                                       41
<PAGE>   45
 
     Loan Impairment.  On January 1, 1995, the Bank adopted SFAS No. 114,
"Accounting by Creditors for Impairment of a Loan," and SFAS No. 118,
"Accounting by Creditors for Impairment of a Loan -- Income Recognition and
Disclosures." SFAS No. 114 requires the measurement of loan impairment to be
based on the present value of expected future cash flows discounted at the
loan's original effective interest rate or the fair value of the underlying
collateral on collateral-dependent loans. SFAS No. 118 allows a creditor to use
existing methods for recognizing interest income on impaired loans.
 
     Upon adoption of SFAS No. 114, in the first quarter of 1995, $2.9 million
of in-substance foreclosed assets were reclassified on the Bank's consolidated
statement of financial condition from foreclosed real estate to loans receivable
as SFAS No. 114 eliminated the in-substance designation. No other financial
statement impact resulted from the Bank's adoption of SFAS No. 114.
 
     In general, under SFAS No. 114, interest income on impaired loans will
continue to be recognized by the Bank on the accrual basis of accounting, unless
the loan is greater than 90 days delinquent with respect to principal or
interest, or the loan has been partially or fully charged-off. Interest on loans
greater than 90 days delinquent is generally recognized on a cash basis.
Interest income on loans which have been fully or partially charged-off is
generally recognized on a cost-recovery basis; that is, all proceeds from the
loan payments are first applied as a reduction to principal before any income is
recorded.
 
     OTS regulations require the Bank to classify certain assets into one of
three categories -- "substandard," "doubtful," and "loss." An asset which does
not currently warrant classification as substandard but which possesses
weaknesses or deficiencies deserving close attention is considered a criticized
asset and is designated as "special mention." The Bank designated $35.8 million
of its assets as "special mention" at December 31, 1995.
 
     The following table sets forth the amounts of the Bank's classified assets
and ratio of classified assets to total assets, net of specific reserves and
charge-offs, as of the dates indicated (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                    DECEMBER 31,
                                                  ------------------------------------------------
                                                   1995      1994      1993      1992       1991
                                                  -------   -------   -------   -------   --------
<S>                                               <C>       <C>       <C>       <C>       <C>
Substandard assets:
  Loans.........................................  $30,351   $29,591   $37,886   $55,727   $ 66,839
  Foreclosed real estate (net)..................    3,402     7,631     9,707    24,488     14,875
  Loans to facilitate...........................       --        --        --        80        760
  Real estate held for investment...............    1,111     1,191     2,166     1,616     24,587
  Investments...................................       --    21,972    29,509        --         --
Doubtful assets.................................       --        --        --        --         --
Loss assets.....................................       --        --        --        --         --
                                                  -------   -------   -------   -------   --------
Total classified assets.........................  $34,864   $60,385   $79,268   $81,911   $107,061
                                                  =======   =======   =======   =======   ========
Ratio of classified assets to total assets......     1.96%     3.32%     4.53%     3.66%      4.54%
                                                  =======   =======   =======   =======   ========
</TABLE>
 
     The Bank's "substandard" assets decreased from $60 million at December 31,
1994 to $35 million at December 31, 1995, primarily as a result of the upgrade
and paydowns of an investment security from substandard to special mention,
payoffs and paydowns of real estate loans, and the disposition of foreclosed
real estate. Assets classified as "substandard" are inadequately protected by
the current net worth or paying capacity of the obligor or the collateral
pledged, if any. Foreclosed real estate decreased $4.2 million during 1995,
principally as a result of sales. It is the Bank's practice to charge-off all
assets which it considers to be "loss." As a result, none of the Bank's assets,
net of charge-offs, were classified as "loss" at December 31, 1995.
 
     The upgrade of the privately issued $20.2 million investment security from
"substandard" to "special mention" during the second quarter of 1995 was the
result of the stabilization of delinquencies of the security's underlying loans
and the market values of collateral supporting such loans, and management's
analysis of the credit enhancement of the security versus loss estimates on the
underlying loans. The Bank continues to
 
                                       42
<PAGE>   46
 
receive scheduled monthly payments of principal and interest on this security.
At December 31, 1995, the balance of this security totaled $16.9 million and is
included in special mention assets.
 
     Special mention assets increased from $32.2 million at December 31, 1994 to
$35.8 million at December 31, 1995. This increase was caused, primarily by the
change in classification of the investment security from substandard to special
mention, partially offset by a $3 million reclassification to substandard of a
construction loan and paydowns of California residential loans, commercial real
estate loans, and commercial loans.
 
     The current level of the Bank's classified assets reflects significant
improvement from the prior two years. Aggressive management of the resolution of
these assets along with some stabilization within the economy contributed to the
success in reducing the classified asset portfolio. Although progress has been
positive, the Bank is unable to predict at this time what level, if any, of
these assets may subsequently be charged-off or may result in actual losses.
 
     As a result of the Bank's internal review process, the allowance for
estimated credit losses on loans decreased from $17.7 million at December 31,
1994, to $16.4 million at December 31, 1995. During 1995, the Bank established
provisions for estimated credit losses totaling $8.3 million, of which $8.1
million related to the Bank's loan, foreclosed real estate, and debt security
portfolio and $162,000 was related to its real estate investment portfolio. In
1994, the Bank established provisions for estimated credit losses totaling $7.4
million, of which $163,000 related to the Bank's real estate investment
portfolio and $7.2 million related to its loan, foreclosed real estate
portfolio, and debt security portfolio.
 
     The Bank's loan portfolio is concentrated primarily in Nevada, California,
and Arizona. The following table summarizes the geographic concentrations of the
Bank's loan portfolios at December 31, 1995 (thousands of dollars):
 
                                LOANS BY REGION
 
<TABLE>
<CAPTION>
                                              COMMERCIAL              CONSTRUCTION
                                RESIDENTIAL    MORTGAGE    CONSUMER     AND LAND     COMMERCIAL     TOTAL
                                -----------   ----------   --------   ------------   ----------   ----------
<S>                              <C>           <C>          <C>          <C>           <C>        <C>
Nevada........................   $453,472      $162,454    $188,225      $63,463       $60,978    $  928,592
California....................     92,889         4,576         990          476            --        98,931
Arizona.......................     30,584         5,407      11,825           --           146        47,962
Other.........................        264            --         187           --            --           451
                                 --------      --------    --------      -------       -------    ----------
Total.........................   $577,209      $172,437    $201,227      $63,939       $61,124    $1,075,936
                                 ========      ========    ========      =======       =======    ==========
</TABLE>
 
     At December 31, 1995, 32 percent or $18.5 million of the Bank's outstanding
commercial secured loan portfolio consisted of loans to borrowers in the gaming
industry, with additional unfunded commitments of $9.9 million. These loans are
generally secured by real estate, machinery, and equipment. The Bank's portfolio
of loans, collateralized by real estate, consists principally of real estate
located in Nevada, California, and Arizona. Collectibility is, therefore,
somewhat dependent on the economies and real estate values of these areas and
industries.
 
                                       43
<PAGE>   47
 
     The following table sets forth by geographic location the amount of
classified assets at December 31, 1995 (thousands of dollars):
 
                    CLASSIFIED ASSETS BY GEOGRAPHIC LOCATION
 
<TABLE>
<CAPTION>
                                                CONSTRUCTION     NON-                   INVESTMENTS
                                     MORTGAGE     AND LAND     MORTGAGE   FORECLOSED        IN
                                      LOANS        LOANS        LOANS     REAL ESTATE   REAL ESTATE    TOTAL
                                     --------   ------------   --------   -----------   -----------   -------
<S>                                  <C>           <C>          <C>          <C>           <C>        <C>
Nevada.............................  $17,369       $3,578       $4,734       $1,393        $1,111     $28,185
California.........................    3,754           94           --        1,708            --       5,556
Arizona............................      822           --           --          301            --       1,123
                                     -------       ------       ------       ------        ------     -------
Total..............................  $21,945       $3,672       $4,734       $3,402        $1,111     $34,864
                                     =======       ======       ======       ======        ======     =======
</TABLE>
 
     Classified construction and land loans include committed but undisbursed
loan amounts.
 
     The following table sets forth by type of collateral, the amount of
classified assets at December 31, 1995 (thousands of dollars):
 
                       CLASSIFIED ASSETS BY TYPE OF LOAN
 
<TABLE>
<CAPTION>
                                                                       FORECLOSED       INVESTMENTS
                                                            LOANS      REAL ESTATE     IN REAL ESTATE
                                                           -------     -----------     --------------
<S>                                                        <C>            <C>              <C>
Single-family residential................................  $ 5,162        $1,859           $   --
Commercial and multi-family mortgage.....................   16,783           693              781
Construction/land........................................    3,672           336              330
Consumer.................................................      797           514               --
Other....................................................    3,937            --               --
                                                           -------        ------           ------
Total....................................................  $30,351        $3,402           $1,111
                                                           =======        ======           ======
</TABLE>
 
     The largest substandard loan at December 31, 1995 was an $8.1 million
multi-family real estate loan in Nevada. In addition, the Bank had four other
substandard loans at December 31, 1995, in excess of $1 million: two hotel
loans, one multi-family loan, and a shopping center loan, all located in Nevada.
 
     The largest parcel of foreclosed real estate owned by the Bank at December
31, 1995, was a $460,000 single-family residence located in California.
 
     Substandard real estate held for investment includes a $780,000 Nevada
branch facility whose operations were consolidated with another branch in
Nevada. This branch facility was formerly included in premises and equipment.
 
     The following table presents the Bank's net charge-off experience for loans
receivable, debt securities, and foreclosed real estate by loan type (thousands
of dollars):
 
<TABLE>
<CAPTION>
                                                                         NET CHARGE-OFFS
                                                                   ----------------------------
                                                                    1995       1994       1993
                                                                   ------     ------     ------
<S>                                                                <C>        <C>        <C>
Single-family residential (SFR)..................................  $  585     $  827     $  916
Commercial and multi-family mortgage.............................     186        959      2,275
Construction/land................................................     376      1,297      2,248
Nonmortgage......................................................   5,964      2,739      1,750
Debt securities..................................................   2,077         --         --
                                                                   ------     ------     ------
          Net charge-offs........................................  $9,188     $5,822     $7,189
                                                                   ======     ======     ======
</TABLE>
 
     The $186,000 of commercial mortgage charge-offs for the year ended December
31, 1995, were comprised principally of one apartment complex and one
hotel/motel property totaling $161,000, both located
 
                                       44
<PAGE>   48
 
in Nevada. Construction and land losses in 1995 consisted primarily of four
California loans totaling $483,000 offset by sales of $123,000 on a
single-family construction property also located in California. Nonmortgage loan
charge-offs during 1995 were principally comprised of $2.6 million in
charge-offs from the corporate loan portfolio, $2.5 million of losses related to
installment loans, $390,000 of signature line charge-offs, and $362,000 in
checking account charge-offs. SFR charge-offs for 1994 and 1993 consisted
primarily of California-based loans and foreclosed real estate.
 
     During the second quarter of 1995, the Bank transferred $4.4 million of its
allowance for estimated credit losses affiliated with loans to separate
allowances for credit losses affiliated with foreclosed real estate and debt
securities. Of this amount, $1.3 million was transferred to the foreclosed real
estate allowance for losses and $3.1 million was transferred to the allowance
for losses on debt securities. Prior to the second quarter, the evaluation of
the adequacy of the Bank's allowance for estimated credit losses affiliated with
loans receivable incorporated estimates for losses in the foreclosed real estate
and debt security portfolios, but were not deemed material enough to be
segregated as separate allowances. Additionally, prior to the second quarter, no
credit losses had been experienced in the debt security portfolio. Losses in the
foreclosed real estate portfolio subsequent to foreclosure had been accounted
for as loan losses. Based upon management's review and the recent performance of
the debt security, the loss allowance was eliminated at December 31, 1995.
 
                                       45
<PAGE>   49
 
RESULTS OF FINANCIAL SERVICES OPERATIONS
 
     The Bank's net income depends in large part on the difference, or interest
rate spread, between the yield it earns from its loan and debt security
portfolios and the rates it pays for deposits and borrowings.
 
     The following table reflects, for the periods indicated, the components of
net interest income of the Bank, setting forth average assets, liabilities, and
equity; interest income on interest-earning assets and interest expense on
interest-bearing liabilities; average yields on interest-earning assets and
interest-bearing liabilities; and net interest income (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                   YEAR ENDED DECEMBER 31,
                             ---------------------------------------------------------------------------------------------------
                                          1995                              1994                              1993
                             -------------------------------   -------------------------------   -------------------------------
                              AVERAGE                AVERAGE    AVERAGE                AVERAGE    AVERAGE                AVERAGE
                              BALANCE     INTEREST    YIELD     BALANCE     INTEREST    YIELD     BALANCE     INTEREST    YIELD
                             ----------   --------   -------   ----------   --------   -------   ----------   --------   -------
<S>                          <C>          <C>        <C>       <C>          <C>        <C>       <C>          <C>        <C>
Assets
Interest-earning assets
  Cash equivalents.......... $   43,611   $  2,639     6.05%   $   56,380   $  2,432     4.31%   $   42,787   $  1,321     3.09%
  Debt securities held to
    maturity................     89,899      6,798     7.56        73,520      4,919     6.69       425,141     26,909     6.33
  Debt securities available
    for sale................    484,567     32,562     6.72       556,781     34,165     6.14       542,264     30,395     5.61
  Loans receivable..........  1,013,218     90,217     8.90       886,702     76,080     8.58       790,082     73,106     9.25
  FHLB stock................     12,959        661     5.10        16,916        838     4.95        16,475        594     3.61
                             ----------   --------     ----    ----------   --------     ----    ----------   --------     ----
Total interest-earning
  assets....................  1,644,254    132,877     8.08     1,590,299    118,434     7.45     1,816,749    132,325     7.28
                                          --------     ----                 --------     ----                 --------     ----
Noninterest-earning assets
  Real estate held for sale
    or development..........      4,683                            10,785                            26,132
  Premises and equipment,
    net.....................     21,555                            22,236                            28,807
  Other assets..............     37,249                            39,502                            56,443
  Excess of cost over net
    assets acquired.........     63,799                            67,632                            73,972
                             ----------                        ----------                        ----------
Total assets................ $1,771,540                        $1,730,454                        $2,002,103
                             ==========                        ==========                        ==========
Liabilities and
  Stockholder's Equity
Interest-bearing liabilities
  Deposits.................. $1,246,388     51,938     4.17    $1,229,515     44,116     3.59    $1,443,628     57,643     3.99
  Securities sold under
    agreements to
    repurchase..............    175,618     10,889     6.20       222,620     11,024     4.95       305,123     13,132     4.30
  Advances from FHLB........    142,523      9,191     6.45        73,510      3,543     4.82        38,897      2,147     5.52
  Notes payable.............      8,066        658     8.16         8,203        635     7.74        14,229      1,170     8.22
  Unsecured senior notes....         --         --       --            --         --       --        13,777      1,021     7.41
                             ----------   --------     ----    ----------   --------     ----    ----------   --------     ----
Total interest-bearing
  liabilities...............  1,572,595     72,676     4.62     1,533,848     59,318     3.87     1,815,654     75,113     4.14
Cost of hedging
  activities................                   624      .04                      485      .03                       24       --
                                          --------     ----                 --------     ----                 --------     ----
Cost of funds...............                73,300     4.66                   59,803     3.90                   75,137     4.14
                                          --------     ----                 --------     ----                 --------     ----
Noninterest-bearing
  liabilities and
  stockholder's equity
  Other liabilities and
    accrued expenses........     22,004                            21,625                            22,914
                             ----------                        ----------                        ----------
Total liabilities...........  1,594,599                         1,555,473                         1,838,568
Total stockholder's
  equity....................    176,941                           174,981                           163,535
                             ----------                        ----------                        ----------
Total liabilities and
  equity.................... $1,771,540                        $1,730,454                        $2,002,103
                             ==========                        ==========                        ==========
Capitalized and transferred
  interest..................                    --       --                       13       --                       61       --
                                          --------     ----                 --------     ----                 --------     ----
Net interest income.........              $ 59,577     3.42%                $ 58,644     3.55%                $ 57,249     3.14%
                                          ========     ====                 ========     ====                 ========     ====
Net yield on
  interest-earning assets...                           3.62%                             3.69%                             3.15%
                                                       ====                              ====                              ====
</TABLE>
 
- ---------------
Note: Loans receivable include accrued interest and loans on nonaccrual, and are
      net of undisbursed funds, allowances for estimated credit losses,
      discounts, and deferred loan fees.
 
                                       46
<PAGE>   50
 
     The following table shows, for the periods indicated, the effects of the
two primary determinants of the Bank's net interest income: interest rate spread
and the relative amounts of interest-sensitive assets and liabilities. The table
also shows the extent to which changes in interest rates and changes in the
volumes of interest-sensitive assets and liabilities have affected the Bank's
interest income and expense for the periods indicated. Changes from period to
period are attributed to: (i) changes in rate (change in weighted average
interest rate multiplied by prior period average portfolio balance); (ii)
changes in volume (change in average portfolio balance multiplied by prior
period rate); and (iii) net or combined changes in rate and volume. Any changes
attributable to both rate and volume that cannot be segregated have been
allocated proportionately between the two factors.
 
<TABLE>
<CAPTION>
                                                           YEAR ENDED DECEMBER 31,
                                          ----------------------------------------------------------
                                            1995 COMPARED TO 1994          1994 COMPARED TO 1993
                                             INCREASE (DECREASE)            INCREASE (DECREASE)
                                              DUE TO CHANGES IN              DUE TO CHANGES IN
                                          --------------------------   -----------------------------
                                          VOLUME     RATE      NET      VOLUME     RATE       NET
                                          -------   ------   -------   --------   -------   --------
                                                            (THOUSANDS OF DOLLARS)
<S>                                       <C>       <C>      <C>       <C>        <C>       <C>
INTEREST INCOME ON:
Cash equivalents........................  $  (264)  $   471  $   207   $    496   $   615   $  1,111
Debt securities held to maturity........    1,187       692    1,879    (23,620)    1,630    (21,990)
Debt securities available for sale......   (5,901)    4,298   (1,603)       831     2,939      3,770
Loans receivable........................    7,343     6,794   14,137      7,336    (4,362)     2,974
Dividends on FHLB stock.................     (203)       26     (177)        16       228        244
                                          -------   -------  -------   --------   -------   --------
     Total interest income..............    2,162    12,281   14,443    (14,941)    1,050    (13,891)
                                          -------   -------  -------   --------   -------   --------
INTEREST EXPENSE ON:
Deposits................................      612     7,210    7,822     (8,035)   (5,492)   (13,527)
Securities sold under agreements to
  repurchase............................   (2,918)    2,783     (135)    (4,755)    2,647     (2,108)
Advances from FHLB......................    4,152     1,496    5,648      1,628      (232)     1,396
Notes payable...........................       --        23       23       (470)      (65)      (535)
Unsecured senior notes..................       --        --       --     (1,021)       --     (1,021)
                                          -------   -------  -------   --------   -------   --------
     Total interest expense.............    1,846    11,512   13,358    (12,653)   (3,142)   (15,795)
Cost (benefit) of hedging activity......      105        34      139        730      (269)       461
                                          -------   -------  -------   --------   -------   --------
Cost of funds...........................    1,951    11,546   13,497    (11,923)   (3,411)   (15,334)
Capitalized and transferred interest....      (13)       --      (13)       (12)      (36)       (48)
                                          -------   -------  -------   --------   -------   --------
     Net interest income................  $   198   $   735  $   933   $ (3,030)  $ 4,425   $  1,395
                                          =======   =======  =======   ========   =======   ========
</TABLE>
 
  1995 vs. 1994
 
     The Bank recorded a net loss of $3.2 million for the year ended December
31, 1995, compared to net income of $7.7 million for the year ended December 31,
1994. The decrease in net income was principally due to the goodwill impairment
of $11.8 million in 1995. Core earnings from Banking operations increased from
$11.3 million at December 31, 1994 to $11.9 million at December 31, 1995,
primarily due to increased net interest margin.
 
     The higher interest-earning asset base is the result of the Bank's strategy
of offering loans tied to market rates held in the portfolio. The increase in
the average yield on interest-earning assets is the result of increased loan and
security yields as a result of a large portion of the asset portfolio's
adjustable-rate attributes and new originations at higher rates, which partially
offset the increased cost in interest-bearing liabilities.
 
     The following summarizes the significant effects of these factors:
 
          (i) Interest on cash equivalents increased due to the higher yield
     which was a result of the higher interest rates during the year.
 
                                       47
<PAGE>   51
 
          (ii) The average balance on debt securities held to maturity and the
     average yield were higher in 1995 due to the purchase of higher yielding
     securities late in 1994. The income on debt securities available for sale
     increased due to increased rates on adjustable-rate securities offsetting
     most of the decrease in balances due to paydowns on securities, maturities
     and sales.
 
          (iii) Total loan originations for 1995 were $525 million compared to
     originations of $466 million for 1994. The increase in loan originations
     for 1995 was due to the growth in the Las Vegas real estate market. The
     average yield on loans increased as a result of an increase in market
     interest rates resulting in higher rates on adjustable-rate mortgage loans.
 
          (iv) Dividends on FHLB stock decreased as a result of stock sales and
     the higher interest rate environment in 1995.
 
          (v) The increase in the cost of savings was due to a slight increase
     in balances combined with the higher interest rate environment.
 
          (vi) The decrease in interest on securities sold under agreements to
     repurchase was due to net repayments of borrowings during the year, largely
     offset by an increase in the rate paid.
 
          (vii) The increase in the average balance for FHLB advances was due to
     the new borrowings during the year. The increase in the cost of these
     advances was due to higher interest rates on the new borrowings.
 
     The Bank's cost of hedging activities increased principally as a result of
the increased outstanding balance of interest rate swaps of $98.2 million
(notional amount) in 1995 compared to $72.5 million (notional amount) of
interest rate swaps in 1994.
 
     The net gain on sale of loans increased $843,000 from $247,000 in 1994 to
$1.1 million in 1995, due to higher prices received on loans sold and
implementation of SFAS No. 122. The loans sold were $46 million in 1994 and $38
million in 1995. Net gains on the sale of debt securities increased from a net
gain of $34,000 in 1994 to $970,000 in 1995, primarily due to the sale of CMO
residuals to take advantage of favorable market conditions, eliminate an area of
possible regulatory concern due to the volatile aspects of the securities, and
enhance the credit quality of the investment portfolio. In January 1994, the
Bank sold its credit card portfolio and recognized a gain of $1.7 million ($1.1
million, net of charge-offs).
 
     The Bank's high effective tax rate of 238 percent in 1995 was primarily the
result of impairment of goodwill associated with the anticipated sale to Norwest
Corporation, which is not tax deductible.
 
  1994 vs. 1993
 
     The Bank recorded net income of $7.7 million for the year ended December
31, 1994, compared to net income of $6.6 million for the year ended December 31,
1993. The increase in net income was principally due to an improved net interest
margin, along with increased operational efficiency.
 
     The lower interest-earning asset base is the result of the Bank's strategy
of reducing its total asset size. The increase in the average yield on
interest-earning assets is the result of the repricing of interest-sensitive
loans and debt securities, repayment of lower yielding loans and debt
securities, and the replacement of such loans and debt securities with higher
yielding originations and purchases.
 
     The following summarizes the significant effects of these factors:
 
          (i) Interest on cash equivalents increased due to the higher yield
     which was a result of higher interest rates and increased volume during the
     year.
 
          (ii) Debt securities, in total, decreased principally as a result of
     the sale of $334 million to fund the transfer of the Arizona-based deposit
     liabilities in 1993 (Arizona sale) and paydowns within the portfolio,
     offset partially by purchases of $296 million. The decrease in average
     balance of debt securities also resulted in a decrease of the interest on
     debt securities. As the Arizona sale did not occur until the last half of
     1993, the average balance of the debt securities was higher in 1993. The
     increase in the yield was
 
                                       48
<PAGE>   52
 
     due to sales of lower coupon securities in 1993 and to the purchase of
     higher yielding debt securities in 1994.
 
          (iii) The average loans receivable portfolio increased principally due
     to a decrease in loan payoffs from 1994 compared to 1993, partially offset
     by decreased loan originations. Total loan originations for 1994 were $466
     million compared to originations of $500 million for 1993. The decline in
     loan originations for 1994 was due to a rising interest rate environment
     and a corresponding decline in refinancing activity. The rise in interest
     rates also slowed down the prepayments within the Bank's mortgage loan
     portfolio. The average yield on loans declined as a result of lower
     interest rates on newly funded adjustable-rate mortgage loans.
 
          (iv) Dividends on FHLB stock increased as a result of a higher
     declared dividend rate in 1994.
 
          (v) The average balance for deposits decreased as a result of the
     Arizona sale of $321 million in 1993. The average balance of deposits was
     higher in 1993 because the sale occurred in the last half of the year. The
     decrease in the cost of savings was due to the lower interest rate
     environment.
 
          (vi) The decrease in interest on securities sold under agreements to
     repurchase was due to net repayments of borrowings during the year,
     partially offset by an increase in the cost.
 
          (vii) The increase in the average balance for FHLB advances was due to
     new borrowings during the year, partially offset by repayment of advances.
     The decrease in the cost of these advances was due to lower interest rates
     on the new borrowings versus the higher rates on these advances paid off.
 
          (viii) Interest on notes payable declined primarily as a result of the
     repayment of $10.4 million in the third quarter of 1993.
 
          (ix) Interest on unsecured senior notes declined as a result of the
     pay-off of the $25 million balance in the third quarter of 1993.
 
     The Bank's cost of hedging activities increased principally as a result of
an increase in the notional amount of interest rate swaps outstanding of $72.5
million in 1994 compared to $7.5 million in 1993.
 
     Provisions for estimated credit losses increased in 1994 versus 1993 as a
result of management's evaluation of the adequacy of the allowances for
estimated credit losses. See Risk Management -- Credit Risk Management herein.
 
     The net gain on sale of loans decreased $1.5 million from $1.7 million in
1993 to $247,000 in 1994, due to a decrease in the amount of loans sold from $78
million in 1993 to $46 million in 1994. Net gains on the sale of debt securities
decreased from a net gain of $8 million in 1993 to $34,000 in 1994, primarily
due to the sale in 1993 of $361 million in debt securities, of which $334
million were sold to fund the Arizona sale. In January 1994, the Bank sold its
credit card portfolio and recognized a gain of $1.7 million ($1.1 million net of
charge-offs). Other income decreased principally due to a legal settlement of
$1.2 million received in 1993, while legal fees of $810,000 were incurred in
1994 associated with a Las Vegas apartment complex which the Bank built.
 
     General and administrative expenses decreased $4.8 million, or 10 percent,
in 1994. This decrease was due to the general and administrative expenses
associated with the Arizona operations which were incurred in 1993 until the
sale in the third quarter of that year, which were not incurred in 1994 along
with increases in efficiency and focus on cost reduction.
 
     The Bank's effective tax rate was 45.4 percent in 1994 primarily as a
result of goodwill amortization.
 
                                       49
<PAGE>   53
 
ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
                          CONSOLIDATED BALANCE SHEETS
                             (THOUSANDS OF DOLLARS)
 
<TABLE>
<CAPTION>
                                                                                       DECEMBER 31,
                                                                                  -----------------------
                                                                                     1995         1994
                                                                                  ----------   ----------
<S>                                                                               <C>          <C>
                                              ASSETS
Utility plant
  Gas plant.....................................................................  $1,579,665   $1,428,941
  Less: accumulated depreciation................................................    (474,891)    (433,429)
  Acquisition adjustments.......................................................       6,298        6,729
  Construction work in progress.................................................      26,678       33,675
                                                                                  ----------   ----------
    Net utility plant (Note 2)..................................................   1,137,750    1,035,916
                                                                                  ----------   ----------
Other property and investments..................................................      35,128       34,195
                                                                                  ----------   ----------
Current assets
  Cash and cash equivalents.....................................................      11,168        6,076
  Accounts receivable, net of allowances (Note 3)...............................      38,186       57,905
  Accrued utility revenue.......................................................      43,900       47,533
  Deferred purchased gas costs (Note 4).........................................          --       15,219
  Deferred tax benefit (Note 10)................................................      17,089           --
  Prepaids and other current assets.............................................      31,386       36,589
  Net assets of discontinued operations (Note 12)...............................     175,493      175,855
                                                                                  ----------   ----------
         Total current assets...................................................     317,222      339,177
                                                                                  ----------   ----------
Deferred charges and other assets (Note 4)......................................      42,427       44,294
                                                                                  ----------   ----------
Total assets....................................................................  $1,532,527   $1,453,582
                                                                                  ==========   ==========


                                    CAPITALIZATION AND LIABILITIES
Capitalization
  Common stock, $1 par (authorized -- 30,000,000 shares; issued and
    outstanding -- 24,467,499 and 21,281,717 shares)............................  $   26,097   $   22,912
  Additional paid-in capital....................................................     312,631      273,217
  Retained earnings.............................................................      17,322       52,427
                                                                                  ----------   ----------
         Total common equity....................................................     356,050      348,556
  Preferred stock (Note 5)......................................................          --        4,000
  Company-obligated mandatorily redeemable preferred securities of the Company's
    subsidiary, Southwest Gas Capital I, holding solely $61.8 million principal
    amount of 9.125% subordinated notes of the Company due 2025 (Note 5)........      60,000           --
  Long-term debt, less current maturities (Note 6)..............................     607,945      678,263
                                                                                  ----------   ----------
         Total capitalization...................................................   1,023,995    1,030,819
                                                                                  ----------   ----------
Commitments and contingencies (Note 8)
Current liabilities
  Current maturities of long-term debt (Note 6).................................     120,000        5,000
  Short-term debt (Note 7)......................................................      37,000       92,000
  Accounts payable..............................................................      41,864       48,965
  Customer deposits.............................................................      21,406       22,893
  Accrued taxes.................................................................      29,116       42,936
  Deferred taxes (Note 10)......................................................          --        6,943
  Accrued interest..............................................................      11,107       12,064
  Deferred purchased gas costs (Note 4).........................................      32,776           --
  Other current liabilities.....................................................      36,942       23,762
                                                                                  ----------   ----------
         Total current liabilities..............................................     330,211      254,563
                                                                                  ----------   ----------
Deferred income taxes and other credits
  Deferred income taxes and investment tax credits (Note 10)....................     138,893      130,175
  Other deferred credits (Note 4)...............................................      39,428       38,025
                                                                                  ----------   ----------
         Total deferred income taxes and other credits..........................     178,321      168,200
                                                                                  ----------   ----------
Total capitalization and liabilities............................................  $1,532,527   $1,453,582
                                                                                  ==========   ==========
</TABLE>
 
        The accompanying notes are an integral part of these statements.
 
                                       50
<PAGE>   54
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
                       CONSOLIDATED STATEMENTS OF INCOME
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                  YEAR ENDED DECEMBER 31,
                                                             ----------------------------------
                                                               1995         1994         1993
                                                             --------     --------     --------
<S>                                                          <C>          <C>          <C>
Gas operating revenues.....................................  $563,502     $599,553     $539,105
Net cost of gas............................................   227,456      249,922      212,290
                                                             --------     --------     --------
  Operating margin.........................................   336,046      349,631      326,815
                                                             --------     --------     --------
Operating expenses:
  Operations and maintenance...............................   187,969      178,310      169,921
  Depreciation and amortization............................    62,492       57,284       55,088
  Taxes other than income taxes............................    27,173       25,347       24,124
                                                             --------     --------     --------
          Total operating expenses.........................   277,634      260,941      249,133
                                                             --------     --------     --------
Operating income...........................................    58,412       88,690       77,682
                                                             --------     --------     --------
Other income and (expenses):
  Net interest deductions..................................   (53,354)     (49,461)     (41,832)
  Preferred securities distributions (Note 5)..............      (913)          --           --
  Other income (deductions), net...........................      (652)      (1,110)     (13,891)
                                                             --------     --------     --------
          Total other income and (expenses)................   (54,919)     (50,571)     (55,723)
                                                             --------     --------     --------
Income from continuing operations before income taxes......     3,493       38,119       21,959
Income tax expense (Note 10)...............................       839       14,595        8,208
                                                             --------     --------     --------
Income from continuing operations..........................     2,654       23,524       13,751
                                                             --------     --------     --------
Discontinued operations (Note 12):
  Income (loss) from discontinued segment, net of tax
     expense (benefit) of $(2,306), $3,127 and $3,051......    (4,513)       2,777        1,655
  Loss on disposal of discontinued segment, including
     tax expense of $9,900.................................   (13,023)          --           --
                                                             --------     --------     --------
Net income (loss) from discontinued operations.............   (17,536)       2,777        1,655
                                                             --------     --------     --------
Net income (loss)..........................................   (14,882)      26,301       15,406
Preferred/preference stock dividend requirements...........       307          510          741
                                                             --------     --------     --------
Net income (loss) applicable to common stock...............  $(15,189)    $ 25,791     $ 14,665
                                                             ========     ========     ========
Earnings per share from continuing operations..............  $   0.10     $   1.09     $   0.63
Earnings (loss) per share from discontinued operations.....     (0.76)        0.13         0.08
                                                             --------     --------     --------
Earnings (loss) per share of common stock (Note 11)........  $  (0.66)    $   1.22     $   0.71
                                                             ========     ========     ========
Average number of common shares outstanding................    23,167       21,078       20,729
                                                             ========     ========     ========
</TABLE>
 
        The accompanying notes are an integral part of these statements.
 
                                       51
<PAGE>   55
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (THOUSANDS OF DOLLARS)
 
<TABLE>
<CAPTION>
                                                                 YEAR ENDED DECEMBER 31,
                                                          -------------------------------------
                                                            1995          1994          1993
                                                          ---------     ---------     ---------
<S>                                                       <C>           <C>           <C>
CASH FLOW FROM OPERATING ACTIVITIES:
  Net income............................................  $ (14,882)    $  26,301     $  15,406
  Adjustments to reconcile net income to net cash
     provided by operating activities:
     Depreciation and amortization......................     62,492        57,284        55,088
     Deferred income taxes..............................    (15,314)       (9,178)       16,736
     Changes in current assets and liabilities
       Accounts receivable..............................     19,719        (6,487)        5,426
       Accrued utility revenue..........................      3,633        (1,300)       (1,744)
       Unrecovered purchased gas costs..................     47,995         9,014       (33,571)
       Accounts payable.................................     (7,101)       (2,811)        1,676
       Accrued taxes....................................    (13,820)       11,594        (7,101)
       Other current assets and liabilities.............      3,661         6,681        11,967
     Other..............................................       (205)          649        (6,850)
     Undistributed (income) loss from discontinued
       operations.......................................     11,576        (7,673)       (6,596)
                                                          ---------     ---------     ---------
     Net cash provided by operating activities..........     97,754        84,074        50,437
                                                          ---------     ---------     ---------
CASH FLOW FROM INVESTING ACTIVITIES:
  Construction expenditures.............................   (166,183)     (141,390)     (113,903)
  Other.................................................      2,465          (157)       (2,343)
                                                          ---------     ---------     ---------
     Net cash used in investing activities..............   (163,718)     (141,547)     (116,246)
                                                          ---------     ---------     ---------
CASH FLOW FROM FINANCING ACTIVITIES:
  Issuance of common stock..............................     44,844         4,773         6,790
  Issuance of trust originated preferred securities.....     57,713            --            --
  Reacquisition of preferred/preference stocks..........     (4,000)       (4,058)       (7,258)
  Dividends paid........................................    (19,575)      (17,411)      (16,139)
  Issuance of long-term debt............................     49,407        73,000        21,909
  Retirement of long-term debt..........................     (2,285)         (648)       (3,392)
  Issuance (repayment) of short-term debt...............    (55,000)        6,000        66,000
  Other.................................................        (48)         (234)         (422)
                                                          ---------     ---------     ---------
     Net cash provided from financing activities........     71,056        61,422        67,488
                                                          ---------     ---------     ---------
  Change in cash and temporary cash investments.........      5,092         3,949         1,679
  Cash at beginning of period...........................      6,076         2,127           448
                                                          ---------     ---------     ---------
  Cash at end of period.................................  $  11,168     $   6,076     $   2,127
                                                          =========     =========     =========
  Supplemental information:
  Interest paid, net of amount capitalized..............  $  52,741     $  55,167     $  48,594
                                                          =========     =========     =========
  Income taxes, net of refunds..........................  $  20,413     $   3,574     $  15,151
                                                          =========     =========     =========
</TABLE>
 
        The accompanying notes are an integral part of these statements.
 
                                       52
<PAGE>   56
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
                CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                   COMMON STOCK      ADDITIONAL
                                                 ----------------     PAID-IN     RETAINED
                                                 SHARES   AMOUNT      CAPITAL     EARNINGS    TOTAL
                                                 ------   -------    ----------   --------   --------
<S>                                              <C>      <C>         <C>         <C>         <C>
DECEMBER 31, 1992..............................  20,598   $22,228     $262,296    $ 44,920   $329,444
Common stock issuances.........................     399       399        6,429                  6,828
Net income.....................................                                     15,406     15,406
Dividends declared
  Preferred: $9.50 per share...................                                       (513)      (513)
  Second preference: $3.00 per share...........                                       (228)      (228)
  Common: $0.76 per share......................                                    (15,820)   (15,820)
                                                 ------   -------     --------    --------   --------
DECEMBER 31, 1993..............................  20,997    22,627      268,725      43,765    335,117
Common stock issuances.........................     285       285        4,488                  4,773
Net income.....................................                                     26,301     26,301
Dividends declared
  Preferred: $9.50 per share...................                                       (437)      (437)
  Second preference: $3.00 per share...........                                        (73)       (73)
  Common: $0.81 per share......................                                    (17,125)   (17,125)
Redemption of second preference stock..........                              4          (4)        --
                                                 ------   -------     --------    --------   --------
DECEMBER 31, 1994..............................  21,282    22,912      273,217      52,427    348,556
Common stock issuances.........................   3,185     3,185       41,659                 44,844
Issuance costs, preferred securities...........                         (2,287)                (2,287)
Net loss.......................................                                    (14,882)   (14,882)
Dividends declared
  Preferred: $9.50 per share...................                                       (307)      (307)
  Common: $0.82 per share......................                                    (19,826)   (19,826)
Redemption of preferred stock..................                             42         (90)       (48)
                                                 ------   -------     --------    --------   --------
DECEMBER 31, 1995..............................  24,467*  $26,097     $312,631    $ 17,322   $356,050
                                                 ======   =======     ========    ========   ========
</TABLE>
 
- ---------------
* At December 31, 1995, 1.5 million common shares were registered and available
  for issuance under provisions of the Employee Investment Plan and the
  Company's Dividend Reinvestment and Stock Purchase Plan.
 
        The accompanying notes are an integral part of these statements.
 
                                       53
<PAGE>   57
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
NOTE 1 -- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
     Basis of Presentation.  The Company follows generally accepted accounting
principles (GAAP) in all of its businesses, which requires the use of estimates
made by management for the preparation of financial statements. Accounting for
the Company's gas utility operations conforms with GAAP as applied to regulated
companies and as prescribed by federal agencies and the commissions of the
various states in which the utility operates.
 
     Consolidation.  The accompanying financial statements are presented on a
consolidated basis and include the accounts of Southwest Gas Corporation and its
wholly owned subsidiaries, excluding PriMerit Bank. All significant intercompany
balances and transactions have been eliminated. In January 1996, management
reached an agreement to sell PriMerit Bank, which constituted the financial
services segment of the business. For consolidated financial reporting purposes,
the financial services segment is classified as discontinued operations.
 
     Reclassifications.  The financial statements for prior years have been
reclassified to conform to the current year presentation of the Bank as
discontinued operations. Additional reclassifications have also been made to
prior years amounts to conform to the current year presentation.
 
     Net Utility Plant.  Net utility plant includes gas plant at original cost,
less the accumulated provision for depreciation and amortization, plus the
unamortized balance of acquisition adjustments. Original cost includes
contracted services, material, payroll and related costs such as taxes and
benefits, general and administrative expenses, and an allowance for funds used
during construction less contributions in aid of construction.
 
     Deferred Purchased Gas Costs.  The Company is authorized by the various
regulatory authorities having jurisdiction to adjust its billing rates for
changes in the cost of gas purchased. The difference between the current cost of
gas purchased and the cost of gas recovered in billed rates is deferred.
Generally, these deferred amounts are recovered or refunded within one year.
 
     Income Taxes.  The Company uses the asset and liability method of
accounting for income taxes. Under the asset and liability method, deferred tax
assets and liabilities are recognized for the future tax consequences
attributable to differences between the financial statement carrying amounts of
existing assets and liabilities and their respective tax bases. Deferred tax
assets and liabilities are measured using enacted tax rates expected to apply to
taxable income in the years in which those temporary differences are expected to
be recovered or settled. The effect on deferred tax assets and liabilities of a
change in tax rates is recognized in the period that includes the enactment
date.
 
     Investment tax credits (ITC) related to gas utility operations are deferred
and amortized over the life of related fixed assets.
 
     Gas Operating Revenues.  Revenues are recorded when customers are billed.
Customer billings are based on monthly meter reads and are calculated in
accordance with applicable tariffs. The Company also recognizes accrued utility
revenues for the estimated amount of services rendered between the meter-reading
dates in a particular month and the end of such month.
 
     Depreciation and Amortization.  Depreciation is computed on the
straight-line remaining life method at composite rates considered sufficient to
amortize costs over estimated service lives, including components which adjust
for salvage value and removal costs, as approved by the appropriate regulatory
agency. When plant is retired from service, the original cost of plant,
including costs of removal, less salvage, is charged to the accumulated
provision for depreciation. Acquisition adjustments are amortized as ordered by
regulatory bodies at the date of acquisition, which periods approximate the
remaining estimated life of the acquired properties. Costs related to refunding
utility debt and debt issuance expenses are deferred and amortized over the
weighted average lives of the new issues.
 
                                       54
<PAGE>   58
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 1 -- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
     Allowance for Funds Used During Construction (AFUDC).  AFUDC represents the
cost of both debt and equity funds used to finance utility construction. AFUDC
is capitalized as part of the cost of utility plant. The Company capitalized
$1.2 million, $805,000, and $470,000 of AFUDC related to natural gas utility
operations for each of the years ended December 31, 1995, 1994, and 1993,
respectively. The debt portion of AFUDC is reported in the consolidated
statements of income as an offset to net interest deductions and the equity
portion is reported as other income. Utility plant construction costs, including
AFUDC, are recovered in authorized rates through depreciation when completed
projects are placed into operation, and general rate relief is requested and
granted.
 
     Earnings Per Common Share.  Earnings per common share are calculated based
on the weighted average number of shares outstanding during the period.
 
     Cash Flows.  For purposes of reporting consolidated cash flows, cash and
cash equivalents include cash on hand and financial instruments with a maturity
of three months or less, but excludes funds held in trust for industrial
development revenue bonds.
 
     New Accounting Standards.  Effective for fiscal years beginning January 1,
1996, Statement of Financial Accounting Standards (SFAS) No. 121, "Accounting
for the Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed
Of," requires the review of long-lived assets for impairment whenever events or
changes in circumstances indicate that the carrying amount of an asset may not
be recoverable. The adoption of this standard will not have a material impact on
the Company's current financial condition or results of operations.
 
     In October 1995, the Financial Accounting Standards Board issued SFAS No.
123, "Accounting for Stock-Based Compensation." This new standard permits the
continued use of accounting methods prescribed by Accounting Principles Board
(APB) Opinion No. 25, "Accounting for Stock Issued to Employees," or use of the
fair value based method of accounting as encouraged by the statement. The
adoption of this standard will not have a material impact on the Company's
current financial condition or results of operations.
 
NOTE 2 -- UTILITY PLANT
 
     Net utility plant as of December 31, 1995 and 1994 was as follows
(thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                        DECEMBER 31,
                                                                  -------------------------
                                                                     1995           1994
                                                                  ----------     ----------
    <S>                                                           <C>            <C>
    Gas plant:
      Storage.................................................    $   14,546     $   14,252
      Transmission............................................       143,989        140,281
      Distribution............................................     1,206,503      1,077,425
      General.................................................       179,378        164,018
      Other...................................................        35,249         32,965
                                                                  ----------     ----------
                                                                   1,579,665      1,428,941
    Less: accumulated depreciation............................      (474,891)      (433,429)
    Acquisition adjustment, net...............................         6,298          6,729
    Construction work in progress.............................        26,678         33,675
                                                                  ----------     ----------
      Net gas utility property................................    $1,137,750     $1,035,916
                                                                  ==========     ==========
</TABLE>
 
     Depreciation expense on gas plant was $62 million, $56.5 million, and $54
million during the years ended December 31, 1995, 1994, and 1993, respectively.
 
                                       55
<PAGE>   59
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 2 -- UTILITY PLANT (CONTINUED)

     Leases and Rentals.  The Company leases a portion of its corporate
headquarters office complex in Las Vegas and the LNG facilities on its northern
Nevada system. The leases provide for initial terms which expire in 1997 and
2003, respectively, with optional renewal terms available at the expiration
dates. The rental payments are $3.1 million annually, and $4.6 million in the
aggregate over the remaining initial term for the Las Vegas facility, and $6.7
million annually and $50 million in the aggregate for the LNG facilities.
 
     Rentals included in operating expenses with respect to these leases
amounted to $9.8 million in each of the three years in the period ended December
31, 1995. Both of these leases are accounted for as operating leases and are
treated as such for regulatory purposes. Other operating leases of the Company
are immaterial individually and in the aggregate.
 
NOTE 3 -- RECEIVABLES AND RELATED ALLOWANCES
 
     The Company's business activity with respect to gas utility operations is
conducted with customers located within the three-state region of Arizona,
Nevada, and California. At December 31, 1995, approximately 59 percent of the
gas utility customers were in Arizona, 31 percent in Nevada, and 10 percent in
California. While the Company seeks to minimize its credit risk related to
utility operations by requiring security deposits for new customers, certain
customer accounts are ultimately not collected. Provisions for uncollectible
accounts are recorded monthly, as needed, and are included in the ratemaking
process as a cost of service. Activity in the allowance for uncollectibles is
summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                              ALLOWANCE FOR
                                                                              UNCOLLECTIBLES
                                                                              --------------
    <S>                                                                          <C>
    Balance, December 31, 1992..............................................     $ 1,507
      Additions charged to expense..........................................       1,460
      Accounts written off, less recoveries.................................      (1,284)
                                                                                 -------
    Balance, December 31, 1993..............................................       1,683
      Additions charged to expense..........................................       1,445
      Accounts written off, less recoveries.................................      (1,575)
                                                                                 -------
    Balance, December 31, 1994..............................................       1,553
      Additions charged to expense..........................................       1,295
      Accounts written off, less recoveries.................................      (1,621)
                                                                                 -------
    Balance, December 31, 1995..............................................     $ 1,227
                                                                                 =======
</TABLE>
 
NOTE 4 -- REGULATORY ASSETS AND LIABILITIES
 
     The Company's natural gas operations are subject to the regulation of the 
Arizona Corporation Commission, the Public Service Commission of Nevada, the
California Public Utilities Commission, and the Federal Energy Regulatory
Commission. The Company's accounting policies conform to generally accepted
accounting principles applicable to rate-regulated enterprises and reflect the
effects of the ratemaking process. Such effects concern mainly the time at which
various items enter into the determination of net income in accordance with the
principle of matching costs with related revenues.
 
                                       56
<PAGE>   60
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 4 -- REGULATORY ASSETS AND LIABILITIES (CONTINUED)

     The following table represents existing regulatory assets and liabilities 
(thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                          DECEMBER 31,
                                                                      --------------------
                                                                        1995        1994
                                                                      --------     -------
    <S>                                                               <C>          <C>
    SUMMARY OF REGULATORY ASSETS AND LIABILITIES
    Assets
      SFAS No. 109 -- Income taxes, net.............................  $ 13,211     $14,991
      Unamortized premium on reacquired debt........................    10,848      11,582
      Deferred purchased gas costs..................................        --      15,219
      Other.........................................................    15,686      22,144
                                                                      --------     -------
                                                                        39,745      63,936
    Liabilities
      Supplier and other rate refunds due customers.................    (4,844)     (7,966)
      Deferred purchased gas costs..................................   (32,776)         --
      Other.........................................................    (3,389)     (4,348)
                                                                      --------     -------
    Net regulatory assets (liabilities).............................  $ (1,264)    $51,622
                                                                      ========     =======
</TABLE>
 
NOTE 5 -- PREFERRED STOCK, PREFERENCE STOCK, AND PREFERRED SECURITIES
 
     In December 1995, the Company redeemed all remaining outstanding $100
Cumulative Preferred Stock, 9.5% Series. Scheduled annual mandatory redemption
requirements were 8,000 shares, or $800,000 per year, through 1999. After the
1995 annual mandatory redemption requirement was satisfied, the Company
exercised its option to redeem an additional 8,000 shares at par. The remaining
24,000 shares were redeemed at $102 per share, plus accrued and unpaid
dividends. The stock was redeemed because other less costly financing options
were available.
 
     During 1994, the Company redeemed, as required, the remaining shares of its
Second Preference Stock, Third Series. The dividend rate on Second Preference
Stock was cumulative and varied from 3 to 16 percent, based on a formula tied to
operating results with respect to the gas distribution system purchased from
Arizona Public Service Company. During 1993 and 1994, the dividend rate was 3
percent.
 
     Preferred Securities of Southwest Gas Capital I.  In October 1995,
Southwest Gas Capital I (the Trust), a consolidated wholly owned subsidiary of
the Company, issued $60 million of 9.125% Trust Originated Preferred Securities
(the Preferred Securities). In connection with the Trust's issuance of the
Preferred Securities and the related purchase by the Company of all of the
Trust's common securities (the Common Securities), the Company issued to the
Trust $61.8 million principal amount of its 9.125% Subordinated Deferrable
Interest Notes, due 2025 (the Subordinated Notes). The sole assets of the Trust
are and will be the Subordinated Notes. The interest and other payment dates on
the Subordinated Notes correspond to the distribution and other payment dates on
the Preferred Securities and Common Securities. Under certain circumstances, the
Subordinated Notes may be distributed to the holders of the Preferred Securities
and holders of the Common Securities in liquidation of the Trust. The
Subordinated Notes are redeemable at the option of the Company on or after
December 31, 2000, at a redemption price of $25 per Subordinated Note plus
accrued and unpaid interest. In the event that the Subordinated Notes are
repaid, the Preferred Securities and the Common Securities will be redeemed on a
pro rata basis at $25 per Preferred Security and Common Security plus
accumulated and unpaid distributions. The Company's obligations under the
Subordinated Notes, the Declaration of Trust (the agreement under which the
Trust was formed), the guarantee of payment of certain distributions, redemption
payments and liquidation payments with respect to the Preferred Securities to
the extent the Trust has funds available therefor and the indenture governing
the Subordinated
 
                                       57
<PAGE>   61
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 5 -- PREFERRED STOCK, PREFERENCE STOCK, AND PREFERRED SECURITIES 
(CONTINUED)

Notes, including the Company's agreement pursuant to such indenture to pay all
fees and expenses of the Trust, other than with respect to the Preferred
Securities and Common Securities, taken together, constitute a full and
unconditional guarantee on a subordinated basis by the Company of payments due
on the Preferred Securities. As of December 31, 1995, 2.4 million Preferred
Securities were outstanding.
 
     The Company has the right to defer payments of interest on the Subordinated
Notes by extending the interest payment period at any time for up to 20
consecutive quarters (each, an Extension Period). If interest payments are so
deferred, distributions will also be deferred. During such Extension Period,
distributions will continue to accrue with interest thereon (to the extent
permitted by applicable law) at an annual rate of 9.125% per annum compounded
quarterly. There could be multiple Extension Periods of varying lengths
throughout the term of the Subordinated Notes. If the Company exercises the
right to extend an interest payment period, the Company shall not during such
Extension Period (i) declare or pay dividends on, or make a distribution with
respect to, or redeem, purchase or acquire or make a liquidation payment with
respect to, any of its capital stock, or (ii) make any payment of interest,
principal or premium, if any, on or repay, repurchase, or redeem any debt
securities issued by the Company that rank pari passu with or junior to the
Subordinated Notes; provided, however, that restriction (i) above does not apply
to any stock dividends paid by the Company where the dividend stock is the same
as that on which the dividend is being paid. The Company has no present
intention of exercising its right to extend the interest payment period.
 
NOTE 6 -- LONG-TERM DEBT
 
<TABLE>
<CAPTION>
                                                                                      DECEMBER 31,
                                                                   --------------------------------------------------
                                                                     1995          1995          1994          1994
                                                                   CARRYING       MARKET       CARRYING       MARKET
                                                                    AMOUNT        VALUE         AMOUNT        VALUE
                                                                   --------      --------      --------      --------
                                                                                 (THOUSANDS OF DOLLARS)
<S>                                                                <C>           <C>           <C>           <C>
Debentures--
  9% Series A, due 2011.........................................   $ 26,890      $ 27,663      $ 27,557      $ 26,386
  9% Series B, due 2011.........................................     31,213        32,110        31,913        30,557
  8 3/4% Series C, due 2011.....................................     18,353        18,881        19,261        18,587
  9 3/8% Series D, due 2017.....................................    120,000       126,150       120,000       118,650
  10% Series E, due 2013........................................     23,069        23,963        23,079        23,541
  9 3/4% Series F, due 2002.....................................    100,000       117,600       100,000       102,897
  Unamortized discount..........................................     (6,209)           --        (6,723)           --
                                                                   --------      --------      --------      --------
                                                                    313,316       346,367       315,087       320,618
                                                                   --------      --------      --------      --------
Term-loan facilities and other debt.............................    200,000                     200,000
                                                                   --------                    --------
Industrial development revenue bonds--
  Variable-rate bonds
    Series due 2028.............................................     50,000                      50,000
    Less funds held in trust....................................    (32,942)                    (38,510)
                                                                   --------                    --------
                                                                     17,058                      11,490
                                                                   --------                    --------
  Fixed-rate bonds
    7.30% 1992 Series A, due 2027...............................     30,000        31,560        30,000        30,338
    7.50% 1992 Series B, due 2032...............................    100,000       106,500       100,000       102,550
    6.50% 1993 Series A, due 2033...............................     75,000        75,000        75,000        71,807
    Unamortized discount........................................     (3,757)           --        (3,865)           --
    Less funds held in trust....................................     (3,672)           --       (44,449)           --
                                                                   --------                    --------
                                                                    197,571                     156,686
                                                                   --------                    --------
                                                                    727,945                     683,263
  Less current maturities.......................................    120,000                       5,000
                                                                   --------                    --------
                                                                   $607,945                    $678,263
                                                                   ========                    ========
</TABLE>
 
                                       58
<PAGE>   62
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 6 -- LONG-TERM DEBT (CONTINUED)

     In January 1995, the Company finalized a $200 million term-loan facility
with a group of banks. This facility was utilized to refinance existing loans
and short-term notes payable which were classified as long-term debt at December
31, 1994. The $200 million facility provides for a revolving period through
January 1999 at which time any amounts borrowed under the agreement become
payable on demand. Direct borrowing options provide for the payment of interest
at either the LIBOR or certificate of deposit rate, plus a margin based on the
Company's credit rating, or the prime rate. In addition to direct borrowing
options, a letter of credit is available to provide credit support for the
issuance of commercial paper. During 1995, the average cost of this facility was
6.86 percent.
 
     Prior to obtaining the $200 million facility, the Company had two term-loan
facilities totaling $165 million. The first facility was a Restated and Amended
Credit Agreement dated April 1990 in the amount of $125 million. The average
cost of this facility during 1994 was 4.99 percent. The second term loan was a
$40 million Bridge Term Loan Facility (Bridge Loan) which was used to refinance
a $40 million Amended and Restated Domestic Credit Agreement in August 1994.
During 1994, the average interest rate for the Bridge Loan and the Amended and
Restated Domestic Credit Agreement was 5.26 percent.
 
     The interest rate on the variable rate industrial development revenue bonds
is established on a weekly basis and averaged 4.80 percent during 1995 and 3.85
percent during 1994. At the option of the Company, the interest period can be
converted from a weekly rate to a daily-term or variable-term rate.
 
     The fair value of the term-loan facilities approximates carrying value.
Market values for the debentures and fixed-rate IDRB were determined based on
dealer quotes using trading records for December 31, 1995 and 1994, as
applicable, and other secondary sources which are customarily consulted for data
of this kind. The carrying value of the IDRB Series due 2028 was used as the
estimate of fair value based upon the variable interest rate of the bonds.
 
     Requirements to retire long-term debt at December 31, 1995 for the next
five years are expected to be $5 million, $5 million, $11 million, $211 million,
and $11 million, respectively. Upon completion of the sale of PriMerit Bank, the
Company intends to use the proceeds to retire indebtedness of the Company. In
the consolidated balance sheet, $120 million of long-term debt is shown as
current maturities.
 
NOTE 7 -- SHORT-TERM DEBT
 
     The Company has an agreement with several banks for committed credit lines
which aggregate $150 million at December 31, 1995. The agreement provides for
the payment of interest at competitive market rates. The lines of credit also
require the payment of a commitment fee based on the long-term debt rating of
the Company. The committed credit lines have no compensating balance
requirements and expire in July 1996. Short-term borrowings at December 31, 1995
and 1994 were $37 million and $92 million, respectively. The weighted average
interest rates on these borrowings were 6.64 percent at December 31, 1995 and
6.36 percent at December 31, 1994.
 
NOTE 8 -- COMMITMENTS AND CONTINGENCIES
 
     Pending Acquisition.  In November 1995, the Company entered into a
definitive agreement to acquire Northern Pipeline Construction Co. (NPL), a
full-service underground gas pipeline contractor, for $24 million. NPL provides
local gas distribution companies with installation, replacement and maintenance
services for underground natural gas distribution systems. The agreement is a
stock-for-stock exchange in which 100 percent of the stock of NPL will be
acquired in exchange for common stock of the Company. The acquisition is
anticipated to be completed during the first half of 1996.
 
                                       59
<PAGE>   63
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 8 -- COMMITMENTS AND CONTINGENCIES (CONTINUED)

     Legal Proceedings.  The Company has been named as defendant in various
legal proceedings. The ultimate dispositions of these proceedings are not
presently determinable; however, it is the opinion of management that no
litigation to which the Company is subject will have a material adverse impact
on its financial position or results of operations.
 
NOTE 9 -- EMPLOYEE POSTRETIREMENT BENEFITS
 
     The Company has a qualified retirement plan covering the employees of its
natural gas operations segment. The plan is noncontributory with defined
benefits, and covers substantially all employees. It is the Company's policy to
fund the plan at not less than the minimum required contribution nor more than
the tax deductible limit. Plan assets are held in a master trust whose
investments consist of common stock, corporate bonds, government obligations,
real estate, a mutual fund investing in foreign stocks, an insurance company
contract, and cash or cash equivalents.
 
     The plan provides that an employee may earn benefits for a period of up to
30 years and will be vested after 5 years of service. Retirement plan costs were
$6.8 million in 1995, $7.8 million in 1994, and $6.6 million in 1993.
 
     The following table sets forth the plan's funded status and amounts
recognized on the Company's consolidated balance sheets and statements of
income.
 
<TABLE>
<CAPTION>
                                                                        DECEMBER 31,
                                                                   -----------------------
                                                                     1995          1994
                                                                   ---------     ---------
                                                                   (THOUSANDS OF DOLLARS)
    <S>                                                            <C>           <C>
    Actuarial present value of benefit obligations:
    Accumulated benefit obligation, including vested benefits of
      $(111,035) and $(86,800), respectively.....................  $(119,340)    $ (93,225)
                                                                   =========     =========
    Projected benefit obligation for service rendered to date....  $(167,414)    $(136,157)
    Market value of plan assets..................................    169,524       130,497
                                                                   ---------     ---------
      Projected benefit obligation less than (in excess of)
         assets..................................................      2,110        (5,660)
    Unrecognized net transition obligation being amortized
      through 2004...............................................      6,652         7,489
    Unrecognized net loss (gain).................................     (8,669)       (2,010)
    Unrecognized prior service cost..............................        466           523
                                                                   ---------     ---------
    Prepaid retirement plan asset included in the Consolidated
      Balance Sheets.............................................  $     559     $     342
                                                                   =========     =========
    Assumptions used to develop pension obligations were:
      Discount rate..............................................       7.25%         8.25%
      Long-term rate of return on assets.........................       9.00%         8.75%
      Rate of increase in compensation levels....................       4.75%         5.50%
</TABLE>
 
                                       60
<PAGE>   64
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 9 -- EMPLOYEE POSTRETIREMENT BENEFITS (CONTINUED)
 
<TABLE>
<CAPTION>
                                                                     YEAR ENDED DECEMBER 31,
                                                                  -----------------------------
                                                                    1995       1994      1993
                                                                  --------   --------   -------
                                                                  (THOUSANDS OF DOLLARS)
<S>                                                               <C>        <C>        <C>
Net retirement plan costs include the following components:
  Service cost..................................................  $  7,153   $  7,805   $ 6,339
  Interest cost.................................................    11,084     10,164     9,213
  Actual return on plan assets..................................   (35,557)       254    (8,853)
  Net amortization and deferrals................................    24,136    (10,440)      (67)
                                                                  --------   --------   -------
Net periodic retirement plan cost...............................  $  6,816   $  7,783   $ 6,632
                                                                  ========   ========   =======
</TABLE>
 
     In addition to the basic retirement plan, the Company has a separate
unfunded supplemental retirement plan which is limited to certain officers. The
plan is noncontributory with defined benefits. Senior officers who retire with
ten years or more of service with the Company are eligible to receive benefits.
Other officers who retire with 20 years or more of service with the Company are
eligible to receive benefits. Plan costs were $2 million in 1995, $2 million in
1994, and $1.5 million in 1993. The accumulated benefit obligation of the plan
was $14.9 million, including vested benefits of $13.9 million, at December 31,
1995. The Company also has an unfunded retirement plan for directors not covered
by the employee retirement plan. The cost and liability for this plan are not
significant.
 
     The Company has a deferred compensation plan for all officers and members
of the Board. The plan provides the opportunity to defer from a minimum of
$2,000 up to 50 percent of annual compensation. The Company matches one-half of
amounts deferred up to six percent of an officer's annual salary. Payments of
compensation deferred, plus interest, commence upon the participant's retirement
in equal monthly installments over 10, 15, or 20 years, as determined by the
Company. Deferred compensation earns interest at a rate determined each January.
The interest rate represents 150 percent of Moody's Seasoned Corporate Bond
Index.
 
     The Employees' Investment Plan (401k) provides for purchases of the
Company's common stock or certain other investments by eligible employees
through deductions of up to 16 percent of base compensation, subject to IRS
limitations. The Company matches one-half of amounts deferred up to six percent
of an employee's annual compensation. The cost of the plan was $2.3 million in
1995, $2.6 million in 1994, and $1.9 million in 1993.
 
     The Company provides postretirement benefits other than pensions (PBOP) to
its qualified retirees for health care, dental, and life insurance. In December
1990, the FASB issued SFAS No. 106, "Employers' Accounting for Postretirement
Benefits Other Than Pensions." The statement requires the Company to account for
PBOP on an accrual basis rather than reporting these benefits on a pay-as-you-go
basis. The Company adopted SFAS No. 106 in January 1993. The PSCN, CPUC, and
FERC have approved the use of SFAS No. 106 for ratemaking purposes, subject to
certain conditions, including funding. The Company did not receive approval to
recover PBOP costs on an accrual basis in its Arizona rate jurisdictions, but
was authorized to continue to recover the pay-as-you-go costs for ratemaking
purposes. The Company began funding the non-Arizona portion of the PBOP
liability in 1994. Plan assets are combined with the pension plan assets in a
master trust.
 
                                       61
<PAGE>   65
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 9 -- EMPLOYEE POSTRETIREMENT BENEFITS (CONTINUED)

     The following table sets forth the PBOP funded status and amounts
recognized on the Company's consolidated balance sheets and statements of
income.
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                     --------------------------------------
                                                           1995                 1994
                                                     ----------------     -----------------
                                                             (THOUSANDS OF DOLLARS)
    <S>                                              <C>                  <C>
    Accumulated postretirement benefit obligation
      (APBO)
      Retirees.....................................          $(15,030)             $(13,348)
      Fully eligible actives.......................            (1,956)               (1,639)
      Other active participants....................            (6,182)               (4,524)
                                                             --------              --------
         Total.....................................           (23,168)              (19,511)
    Market value of plan assets....................             1,647                   697
    APBO in excess of plan assets..................           (21,521)              (18,814)
                                                             --------              --------
    Unrecognized transition obligation.............            14,738                15,605
    Unrecognized prior service cost................                --                    --
    Unrecognized loss..............................             3,003                   175
                                                             --------              --------
    Accrued postretirement benefit liability.......          $ (3,780)             $ (3,034)
                                                             ========              ========
    Assumptions used to develop postretirement
      benefit obligations were:
      Discount rate................................              7.25%                 8.25%
      Medical inflation............................    9% graded to 5%      10% graded to 5%
      Salary increases.............................              4.75%                 5.50%
</TABLE>
 
<TABLE>
<CAPTION>
                                                                 YEAR ENDED DECEMBER 31,
                                                               ----------------------------
                                                                1995       1994       1993
                                                               ------     ------     ------
                                                                  (THOUSANDS OF DOLLARS)
    <S>                                                        <C>        <C>        <C>
    Net periodic postretirement benefit costs include the
      following components:
      Service cost...........................................  $  399     $  473     $  346
      Interest cost..........................................   1,562      1,472      1,394
      Actual return on plan assets...........................    (286)        --         --
      Net amortization and deferrals.........................   1,061        911        867
                                                               ------     ------     ------
    Net periodic postretirement benefit cost.................  $2,736     $2,856     $2,607
                                                               ======     ======     ======
</TABLE>
 
     The Company makes fixed contributions, based on age and years of service,
to retiree spending accounts for the medical and dental costs of employees who
retire after 1988. The Company pays up to 100 percent of the medical coverage
costs for employees who retired prior to 1989. The medical inflation assumption
in the table above applies to the benefit obligations for pre-1989 retirees
only. This inflation assumption was estimated at ten percent in 1995 and
decreases one percent per year until 1997 and one-half of one percent per year
until 2003, at which time the average annual increase is projected to be five
percent. A one percent increase in these assumptions would change the
accumulated postretirement benefit obligation by approximately $900,000 at
December 31, 1995. Future annual benefit costs would increase $130,000.
 
                                       62
<PAGE>   66
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 10 -- INCOME TAXES
 
     Income tax expense (benefit) consists of the following (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                               YEAR ENDED DECEMBER 31,
                                                          ---------------------------------
                                                            1995         1994        1993
                                                          --------     --------     -------
    <S>                                                   <C>           <C>          <C>
    Current:
      Federal...........................................  $ 13,588      $16,481     $ 8,531
      State.............................................     1,985        2,701       1,194
                                                          --------      -------     -------
                                                            15,573       19,182       9,725
                                                          --------      -------     -------
    Deferred:
      Federal...........................................   (13,752)      (4,441)     (2,140)
      State.............................................      (982)        (146)        623
                                                          --------      -------     -------
                                                           (14,734)      (4,587)     (1,517)
                                                          --------      -------     -------
         Total income tax expense.......................  $    839      $14,595     $ 8,208
                                                          ========      =======     =======
</TABLE>
 
     Deferred income tax expense (benefit) consists of the following significant
components (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                               YEAR ENDED DECEMBER 31,
                                                           --------------------------------
                                                             1995        1994        1993
                                                           --------     -------     -------
    <S>                                                    <C>          <C>         <C>
    Deferred federal and state:
      Property-related items.............................  $  4,921     $ 2,441     $   815
      Purchased gas cost adjustments.....................   (16,488)     (5,531)      3,804
      Self insurance.....................................      (885)      1,161        (691)
      All other deferred.................................    (1,414)     (1,782)     (4,596)
                                                           --------     -------     -------
         Total deferred federal and state................   (13,866)     (3,711)       (668)
                                                           --------     -------     -------
    Deferred investment tax credit, net..................      (868)       (876)       (849)
                                                           --------     -------     -------
         Total deferred income tax benefit...............  $(14,734)    $(4,587)    $(1,517)
                                                           ========     =======     =======
</TABLE>
 
     The consolidated effective income tax rate for the period ended December
31, 1995 and the two prior periods differs from the federal statutory income tax
rate. The sources of these differences and the effect of each are summarized as
follows:
 
<TABLE>
<CAPTION>
                                                                   YEAR ENDED DECEMBER 31,
                                                                  -------------------------
                                                                  1995       1994      1993
                                                                  -----      ----      ----
    <S>                                                           <C>        <C>       <C>
    Federal statutory income tax rate...........................   35.0%     35.0%     35.0%
      Net state tax liability...................................    9.0       4.3       6.1
      Property-related items....................................   24.1       2.1       5.2
      Tax credits...............................................  (22.7)     (2.3)     (3.9)
      Tax exempt interest.......................................  (13.8)       --      (0.8)
      Effect of Internal Revenue Service examination............     --        --      (5.2)
      Corporate-owned life insurance............................  (12.5)     (1.4)     (0.2)
      All other differences.....................................    4.9       0.6       1.2
                                                                  -----      ----      ----
    Consolidated effective income tax rate......................   24.0%     38.3%     37.4%
                                                                  =====      ====      ====
</TABLE>
 
                                       63
<PAGE>   67
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 10 -- INCOME TAXES (CONTINUED)
     Deferred tax assets and liabilities consist of the following (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                                             DECEMBER 31,
                                                                         ---------------------
                                                                           1995         1994
                                                                         --------     --------
<S>                                                                      <C>          <C>
Deferred tax assets:
  Deferred income taxes for future amortization of ITC.................  $ 13,256     $ 13,784
  Employee benefits....................................................     5,306        2,813
  Regulatory balancing accounts........................................    12,411           --
  Other................................................................     3,017        6,429
  Valuation allowance..................................................        --           --
                                                                         --------     --------
                                                                           33,990       23,026
                                                                         --------     --------
Deferred tax liabilities:
  Property-related items, including accelerated depreciation...........   101,133       95,026
  Property-related items previously flowed-through.....................    26,467       28,776
  Unamortized ITC......................................................    19,874       20,741
  Regulatory balancing accounts........................................        --        9,048
  Debt-related costs...................................................     4,462        4,941
  Other................................................................     3,858        1,612
                                                                         --------     --------
                                                                          155,794      160,144
                                                                         --------     --------
Net deferred tax liabilities...........................................  $121,804     $137,118
                                                                         ========     ========
  Current..............................................................  $(17,089)    $  6,943
  Noncurrent...........................................................   138,893      130,175
                                                                         --------     --------
Net deferred tax liabilities...........................................  $121,804     $137,118
                                                                         ========     ========
</TABLE>
 
     Prior to 1981, federal income tax expense for the gas segment was reduced
to reflect additional depreciation and other deductions claimed for income tax
purposes (flow-through method). Subsequently, deferred taxes have been provided
for all differences between financial book and taxable income (normalization
method) in all jurisdictions. The various utility regulatory authorities have
consistently allowed the recovery of previously flowed-through income tax
benefits on property related items by means of increased federal income tax
expense in determining cost of service for ratemaking purposes.
 
     For regulatory and financial reporting purposes, the Company has deferred
recognition of investment tax credits (ITC) by amortizing the benefit over the
depreciable lives of the related properties.
 
                                       64
<PAGE>   68
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 11 -- QUARTERLY FINANCIAL DATA (UNAUDITED)
 
                     CONSOLIDATED QUARTERLY FINANCIAL DATA
 
<TABLE>
<CAPTION>
                                                                     QUARTER ENDED
                                                    ------------------------------------------------
                                                    MARCH 31   JUNE 30    SEPTEMBER 30   DECEMBER 31
                                                    --------   --------   ------------   -----------
                                                    (THOUSANDS OF DOLLARS, EXCEPT PER SHARE AMOUNTS)
<S>                                                 <C>        <C>        <C>            <C>
1995
Operating revenues................................  $203,521   $122,189     $ 91,433      $ 146,359
Operating income (loss)...........................    36,829     (2,873)      (9,215)        33,671
Income (loss) from continuing operations..........    14,449     (9,951)     (13,353)        11,509
Income (loss) from discontinued operations........       196        610          522        (18,864)
Net income (loss).................................    14,645     (9,341)     (12,831)        (7,355)
Net income (loss) applicable to common stock......    14,550     (9,436)     (12,926)        (7,377)
Earnings (loss) per share from continuing
  operations*.....................................      0.67      (0.44)       (0.56)          0.47
Earnings (loss) per share from discontinued
  operations*.....................................      0.01       0.03         0.02          (0.77)
Earnings (loss) per share per common share*.......      0.68      (0.41)       (0.54)         (0.30)

1994
Operating revenues................................  $207,369   $108,407     $ 92,245      $ 191,532
Operating income (loss)...........................    47,519     (4,251)      (8,302)        53,725
Income (loss) from continuing operations..........    21,734    (10,735)     (11,911)        24,436
Income (loss) from discontinued operations........       976        954          746            101
Net income (loss).................................    22,710     (9,781)     (11,165)        24,537
Net income (loss) applicable to common stock......    22,571     (9,919)     (11,303)        24,442
Earnings (loss) per share from continuing
  operations*.....................................      1.03      (0.52)       (0.57)          1.15
Earnings (loss) per share from discontinued
  operations*.....................................      0.04       0.05         0.03             --
Earnings (loss) per share per common share*.......      1.07      (0.47)       (0.54)          1.15

1993
Operating revenues................................  $182,449   $100,306     $ 84,291      $ 172,059
Operating income (loss)...........................    34,454     (1,404)      (8,534)        53,166
Income (loss) from continuing operations..........    14,692     (7,106)     (11,445)        17,610
Income (loss) from discontinued operations........     2,434     (5,966)       4,101          1,086
Net income (loss).................................    17,126    (13,072)      (7,344)        18,696
Net income (loss) applicable to common stock......    16,920    (13,275)      (7,538)        18,558
Earnings (loss) per share from continuing
  operations*.....................................      0.70      (0.35)       (0.57)          0.85
Earnings (loss) per share from discontinued
  operations*.....................................      0.12      (0.29)        0.20           0.05
Earnings (loss) per share per common share*.......      0.82      (0.64)       (0.37)          0.90
</TABLE>
 
- ---------------
* The sum of quarterly earnings (loss) per average common share may not equal
  the annual earnings (loss) per share due to the ongoing change in the weighted
  average number of common shares outstanding.
 
     The demand for natural gas is seasonal, and it is management's opinion that
comparisons of earnings for the interim periods do not reliably reflect overall
trends and changes in the Company's operations. Also, the timing of general rate
relief can have a significant impact on earnings for interim periods. See MD&A
for additional discussion of the Company's operating results.
 
                                       65
<PAGE>   69
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 12 -- DISCONTINUED OPERATIONS -- FINANCIAL SERVICES ACTIVITIES
 
     In January 1996, the Company entered into a definitive agreement to sell
PriMerit Bank (the Bank), a wholly owned subsidiary, to Norwest Corporation
(Norwest) for approximately $175 million in cash. The intended use of the
proceeds will be to reduce outstanding long-term debt. The sale is expected to
be finalized in the third quarter of 1996, following receipt of shareholder and
various governmental approvals and satisfaction of other customary closing
conditions.
 
     The Company estimates that the disposition of the Bank will result in a net
loss of approximately $13 million, which includes a pretax book loss of
approximately $3.1 million plus income taxes estimated at $9.9 million. The
income tax expense results from the Company's tax basis in the Bank being lower
than its book basis. The net loss is reported as loss on disposal of
discontinued segment in the 1995 consolidated financial statements.
 
     Due to the pending sale of the Bank, the results of operations and net
assets of the financial services activities have been classified as discontinued
operations in the consolidated financial statements of the Company as of
December 31, 1995. Comparative consolidated financial statements of the Company
presented for previous years have been reclassified to reflect the financial
services activities as discontinued operations.
 
     Income Statement Presentation.  The amounts shown as discontinued
operations in the Consolidated Statements of Income consist of the income (loss)
from the Bank's stand-alone income statements adjusted for corporate carrying
costs allocated to the Bank to properly reflect the contribution of the
financial services activities to consolidated net income (loss). (See Note 13 of
the Notes to Consolidated Financial Statements for the complete stand-alone
financial statements of the Bank.) Included in the discontinued operations
amount shown in the consolidated income statement for 1995 is an accrual
relating to a proposed Savings Association Insurance Fund (SAIF) assessment
($7.2 million after tax) and a reversal of the goodwill impairment recorded by
the Bank. The estimated goodwill impairment recorded by the Bank is replaced in
the consolidated statements of income with the Company's loss on disposal
calculation.
 
     A reconciliation of the Bank's stand-alone net income to the discontinued
operations and contribution to net income (loss) shown in the consolidated
statements of income for each of the three years in the period ended December
31, 1995 follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                     1995      1994      1993
                                                                   --------   -------   -------
<S>                                                                <C>        <C>       <C>
Stand-alone net income (loss) of PriMerit Bank...................  $ (3,205)  $ 7,673   $ 6,596
Goodwill impairment recorded by the Bank in 1995 arising from the
  sale to Norwest................................................    11,823        --        --
Allocation of corporate carrying costs, principally interest, net
  of tax.........................................................    (5,961)   (4,896)   (4,941)
SAIF accrual recorded in 1995 for consolidated purposes, net of
  tax............................................................    (7,170)       --        --
                                                                   --------   -------   -------
  Amount reported as discontinued operations.....................    (4,513)    2,777     1,655
Accrual for estimated loss on disposal, net of tax...............   (13,023)       --        --
                                                                   --------   -------   -------
          Discontinued operations contribution to consolidated
            net income (loss)....................................  $(17,536)  $ 2,777   $ 1,655
                                                                   ========   =======   =======
</TABLE>
 
     Balance Sheet Presentation.  The amounts shown as net assets of
discontinued operations in the Consolidated Balance Sheets represent the
Company's ownership of 100 percent of the common equity of the Bank. For years
prior to 1995, the Company's investment equaled the stand-alone equity of the
Bank (excluding the unrealized gain (loss) relating to securities covered by
SFAS No. 115). For 1995, the net assets of discontinued operations equals the
estimated realizable value to the Company of the net assets of the Bank. (See
the table below for a reconciliation of Bank's equity to the net assets of
discontinued operations as
 
                                       66
<PAGE>   70
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 12 -- DISCONTINUED OPERATIONS -- FINANCIAL SERVICES ACTIVITIES (CONTINUED)

shown on the consolidated balance sheet of the Company.) An accrual for the
anticipated loss on disposal, including taxes, is included in other accrued
liabilities in the consolidated balance sheet of the Company.
 
     A reconciliation of the stand-alone equity of the Bank to the net assets of
discontinued operations shown in the consolidated balance sheets as of December
31, 1995 and 1994 follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                               1995       1994
                                                             --------   --------
<S>                                                          <C>        <C>
Stand-alone equity of PriMerit.............................  $173,559   $166,388
Goodwill impairment recorded by the Bank in 1995...........    11,823         --
Eliminate SFAS No. 115 adjustment..........................    (1,409)     9,467
SAIF accrual recorded in 1995 for consolidated purposes, 
  net of tax...............................................    (7,170)        --
Other, net of tax..........................................    (1,310)        --
                                                             --------   --------
          Net assets of discontinued operations............  $175,493   $175,855
                                                             ========   ========
</TABLE>
 
                                       67
<PAGE>   71
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK
 
                                 PRIMERIT BANK
 
                 CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION
                             (THOUSANDS OF DOLLARS)
 
<TABLE>
<CAPTION>
                                                                            DECEMBER 31,
                                                                      -------------------------
                                                                         1995           1994
                                                                      ----------     ----------
<S>                                                                   <C>            <C>
                                         ASSETS
Cash and due from banks.............................................  $   46,759     $   35,262
Cash equivalents....................................................      72,991         88,660
Debt securities available for sale, at fair value...................     422,421        529,400
Debt securities held to maturity (fair value of $63,675 and
  $99,403)..........................................................      64,254        101,880
Loans receivable held for sale (fair value of $6,032 and $2,135)....       5,855          2,114
Loans receivable, net of allowance for estimated losses of $16,353
  and $17,659.......................................................   1,070,081        936,037
Real estate acquired through foreclosure, net of allowance for
  estimated losses of $267 and $0...................................       3,136          7,631
Real estate held for sale or development, net of allowance for
  estimated losses of $863 and $476.................................         247            771
Premises and equipment, net.........................................      20,282         21,666
FHLB stock, at cost.................................................      11,057         17,277
Income tax benefit..................................................       1,358          4,055
Other assets........................................................       6,622          5,928
Excess of cost over net assets acquired, net of impairment allowance
  of $11,823 and $0.................................................      49,956         65,640
                                                                      ----------     ----------
          Total assets..............................................  $1,775,019     $1,816,321
                                                                      ==========     ==========


                           LIABILITIES AND STOCKHOLDER'S EQUITY
Deposits............................................................  $1,266,071     $1,239,949
Securities sold under agreements to repurchase......................     140,710        281,935
Advances from FHLB..................................................     164,400         99,400
Notes payable.......................................................       7,995          8,135
Deferred income taxes...............................................       2,971             --
Other liabilities and accrued expenses..............................      19,313         20,514
                                                                      ----------     ----------
          Total liabilities.........................................   1,601,460      1,649,933
                                                                      ----------     ----------
Commitments and contingencies
STOCKHOLDER'S EQUITY:
  Common stock, $1.00 par value; authorized -- 100,000 shares;
     issued and outstanding -- 56,629 shares........................          57             57
  Additional paid-in capital........................................     160,442        160,442
  Unrealized gain (loss), net of tax, on debt securities available
     for sale.......................................................       1,409         (9,467)
  Retained earnings.................................................      11,651         15,356
                                                                      ----------     ----------
          Total stockholder's equity................................     173,559        166,388
                                                                      ----------     ----------
          Total liabilities and stockholder's equity................  $1,775,019     $1,816,321
                                                                      ==========     ==========
</TABLE>
 
            See accompanying notes to PriMerit financial statements.
 
                                       68
<PAGE>   72
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)


                                 PRIMERIT BANK
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                             (THOUSANDS OF DOLLARS)
 
<TABLE>
<CAPTION>
                                                                  YEAR ENDED DECEMBER 31,
                                                             ----------------------------------
                                                               1995         1994         1993
                                                             --------     --------     --------
<S>                                                          <C>          <C>          <C>
Interest income............................................  $132,877     $118,434     $132,325
Interest expense...........................................    73,300       59,790       75,076
                                                             --------     --------     --------
Net interest income........................................    59,577       58,644       57,249
Provision for estimated credit losses......................    (8,149)      (7,230)      (6,212)
                                                             --------     --------     --------
Net interest income after provision for estimated credit
  losses...................................................    51,428       51,414       51,037
                                                             --------     --------     --------
Net loss from real estate operations.......................      (196)        (612)        (910)
                                                             --------     --------     --------
Noninterest income (loss):
  Gain on sale of loans....................................     1,167          598        1,835
  Loss on sale of loans....................................       (77)        (351)         (84)
  Net gain on sale of debt securities......................       970           34        7,973
  Gain (loss) on secondary marketing hedging activities....      (120)         389         (968)
  Loss on sale -- Arizona branches.........................        --           --       (6,262)
  Loan related fees........................................     1,455        1,165        1,025
  Deposit related fees.....................................     7,589        6,788        6,397
  Gain on sale of credit card receivables..................        --        1,689           --
  Other income.............................................       186          319        2,133
                                                             --------     --------     --------
          Total noninterest income.........................    11,170       10,631       12,049
                                                             --------     --------     --------
General and administrative expenses........................    44,395       43,508       48,296
Amortization of excess of cost over net assets acquired....     3,861        3,861        3,984
Impairment of excess of cost over net assets acquired......    11,823           --           --
                                                             --------     --------     --------
Income before income taxes.................................     2,323       14,064        9,896
Income tax expense.........................................     5,528        6,391        6,345
                                                             --------     --------     --------
Net income (loss) before cumulative effect of accounting
  change...................................................    (3,205)       7,673        3,551
Cumulative effect of change in method of accounting for
  income taxes.............................................        --           --        3,045
                                                             --------     --------     --------
Net income (loss)..........................................  $ (3,205)    $  7,673     $  6,596
                                                             ========     ========     ========
</TABLE>
 
            See accompanying notes to PriMerit financial statements.
 
                                       69
<PAGE>   73
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)


                                 PRIMERIT BANK
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (THOUSANDS OF DOLLARS)
 
<TABLE>
<CAPTION>
                                                                        YEAR ENDED DECEMBER 31,
                                                                ---------------------------------------
                                                                  1995           1994           1993
                                                                ---------      ---------      ---------
<S>                                                             <C>            <C>            <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income (loss)..........................................   $  (3,205)     $   7,673      $   6,596
  Adjustments to net income (loss) to reconcile to net cash
    provided by operating activities
    Cumulative effect of change in method of accounting for
       income taxes..........................................          --             --         (3,045)
    Depreciation and amortization............................       3,819          3,918          4,511
    Provisions for estimated losses..........................       8,311          7,393          7,222
    Net gains on sales of loans, servicing, and credit card
       receivables...........................................      (1,090)        (1,936)        (1,751)
    Proceeds from sales of trading debt securities...........          --          5,074             --
    Net gains on sales of debt securities....................        (970)           (34)        (7,973)
    Loss (gain) on secondary marketing hedging activities....         120           (389)           968
    Dividends on FHLB stock..................................        (661)          (838)          (594)
    Amortization of deferred fees............................      (3,649)        (4,194)        (3,424)
    Amortization of premiums, discounts and deferred gains...       4,249          2,265          3,291
    Amortization of excess of cost over net assets
       acquired..............................................       3,861          3,861          3,984
    Impairment of excess of cost over net assets acquired....      11,823             --             --
    Loss on sale of Arizona branches.........................          --             --          6,262
    Increase (decrease) in income taxes payable..............        (891)         6,837         (2,013)
    Deferred income tax provision............................         702          1,098         12,478
    (Increase) decrease in other assets......................        (421)          (650)         1,964
    Increase (decrease) in other liabilities.................      (1,177)           565         10,387
                                                                ---------      ---------      ---------
         Net cash provided by operating activities...........      20,821         30,643         38,863
                                                                ---------      ---------      ---------
CASH FLOWS FROM INVESTING ACTIVITIES:
    Proceeds from maturities and principal repayments of debt
       securities............................................     150,990        291,747        293,788
    Purchase of debt securities..............................          --       (296,349)      (113,078)
    Proceeds from sales of debt securities available for
       sale..................................................       3,118             --        360,853
    Proceeds from sales of debt securities held to
       maturity..............................................       4,420             --             --
    Proceeds from sale of FHLB stock.........................       6,951             --            902
    Principal repayments of loans............................     343,218        311,236        330,033
    Loan originations........................................    (524,849)      (466,260)      (516,642)
    Proceeds from sales of loans and loan servicing rights
       and credit card receivables...........................      38,407         46,090         78,353
    Proceeds (payment) for termination of secondary marketing
       hedges................................................        (120)           389           (968)
    Proceeds from sales of real estate held for
       development...........................................       1,035          4,294          1,926
    Expenditures for real estate held for development........        (675)        (1,140)        (3,211)
    Proceeds from sales of real estate acquired through
       foreclosure...........................................       6,145          4,048         22,916
    Proceeds from sale of Arizona assets and services........          --             --          6,718
    Net change to premises and equipment.....................      (2,890)        (3,252)        (1,521)
                                                                ---------      ---------      ---------
    Net cash provided by (used in) investing activities......      25,750       (109,197)       460,069
                                                                ---------      ---------      ---------
</TABLE>
 
            See accompanying notes to PriMerit financial statements.
 
                                       70
<PAGE>   74
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)


                                 PRIMERIT BANK
 
              CONSOLIDATED STATEMENTS OF CASH FLOWS -- (CONTINUED)
                             (THOUSANDS OF DOLLARS)
 
<TABLE>
<CAPTION>
                                                                      YEAR ENDED DECEMBER 31,
                                                           ----------------------------------------------
                                                              1995             1994              1993
                                                           -----------      -----------      ------------
<S>                                                        <C>              <C>              <C>
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from deposits................................   $ 5,378,949      $ 4,872,023      $  9,933,585
  Sale and assumption of Arizona deposit liabilities....            --               --          (320,902)
  Payments for maturing deposits........................    (5,352,827)      (4,839,926)      (10,026,400)
  Proceeds from securities sold under agreements to
    repurchase..........................................       684,428          281,333         1,499,893
  Repayment of securities sold under agreements to
    repurchase..........................................      (825,653)        (258,439)       (1,617,711)
  Proceeds from other borrowings........................       118,000           31,900            65,000
  Repayment of other borrowings.........................       (53,140)          (3,630)          (45,375)
  Dividends paid to Southwest...........................          (500)              --                --
                                                           -----------      -----------      ------------
         Net cash provided by (used in) financing
           activities...................................       (50,743)          83,261          (511,910)
                                                           -----------      -----------      ------------
Net increase (decrease) in cash and cash equivalents....        (4,172)           4,707           (12,978)
Cash and cash equivalents at the beginning of the
  year..................................................       123,922          119,215           132,193
                                                           -----------      -----------      ------------
Cash and cash equivalents at December 31................   $   119,750      $   123,922      $    119,215
                                                           ===========      ===========      ============
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid (received) during the year for:
  Interest, net of amount capitalized...................   $    23,305      $    14,521      $     18,291
  Income taxes, net.....................................   $     5,717      $    (1,517)     $     (4,103)
</TABLE>
 
            See accompanying notes to PriMerit financial statements.
 
                                       71
<PAGE>   75
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

  Note A -- Summary of Significant Accounting Policies
  ----------------------------------------------------

  Business
 
     PriMerit Bank and subsidiaries (the Bank), a wholly owned subsidiary of
Southwest Gas Corporation (Southwest or the Company), operates in the thrift
industry as a federal savings bank with membership in the Federal Home Loan Bank
(FHLB) system. The Bank's deposit accounts are insured by the Savings
Association Insurance Fund, a division of the Federal Deposit Insurance
Corporation, up to the maximum permitted by law.
 
     The Bank is engaged in retail and commercial banking. The Bank's principal
business is to attract deposits from the general public and to make loans. The
loans may be secured by real estate or other collateral for borrowers to
purchase, construct, refinance, or improve such collateral.
 
     Revenues are derived from interest income on single-family residential
loans; debt securities; commercial, construction, and corporate loans; consumer
loans, and to a lesser extent, deposit and loan related fees. The Bank occupies
facilities at 25 locations in Nevada, of which 17 are located in southern Nevada
and 8 are in northern Nevada.
 
     The Bank follows generally accepted accounting principles (GAAP) as applied
to the banking and thrift industries. The application of GAAP requires the use
of management estimates which are periodically reviewed. Actual results may
differ from those estimates used.
 
  Sale of Bank/Impairment of Goodwill
 
     In January 1996, Southwest entered into a definitive agreement to sell the
Bank to Norwest Corporation for approximately $175 million in cash, subject to
regulatory and stockholder approval. The sale is anticipated to close in the
third quarter of 1996. The Bank recorded an $11.8 million impairment loss in
1995 on its excess of cost over net assets acquired (goodwill) originating from
Southwest's acquisition of the Bank in 1986. The impairment loss is based upon
the difference between the purchase price compared to the Bank's projected
equity on the closing date and will be adjusted in future periods for changes in
the estimated projected closing equity. The Bank will record no goodwill
amortization expense in 1996 as a result of the pending acquisition and related
impairment loss.
 
     The separate stand-alone financial results and disclosures reported for the
Bank on a going-concern basis differ from the results and disclosures reported
for the Bank as a discontinued operation. See Note 12 of the Notes to
Consolidated Financial Statements for reconciliations of Bank stand-alone
financial information to the amounts shown as discontinued operations in the
consolidated financial statements. In 1996, while Southwest will continue, as
required, to disclose the ongoing operating results of the Bank through the
close of the proposed transaction, those amounts will not be realized or
recognized by Southwest in its consolidated financial statements, consistent
with the terms of the sales agreement.
 
  Sale of Arizona Branch Operations
 
     In May 1993, the Bank signed a Definitive Agreement with World Savings and
Loan Association (World) of Oakland, California, whereby World agreed to acquire
the Bank's Arizona branch operations, including all related deposit liabilities
of approximately $321 million (Arizona sale). The transaction was approved by
the appropriate regulatory authorities and closed in August 1993. During 1993,
the Bank recorded a write-off of $5.9 million in goodwill and $367,000 in other
net costs related to the Bank's Arizona operations included in Loss on
sale -- Arizona branches in the Bank's Statements of Operations.
 
  Excess of Cost Over Net Assets Acquired
 
     Excess of cost over net assets acquired (goodwill) arose from Southwest's
acquisition of the Bank in 1986 and from the Bank's acquisition of a thrift
institution in 1988. The goodwill which arose from the acquisition of a thrift
institution in 1988 was written-off in conjunction with the Arizona sale in
1993. Goodwill related to
 
                                       72
<PAGE>   76
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

Southwest's acquisition of the Bank in 1986 was being amortized to expense over
a 25 year period using the straight-line method prior to the impairment loss
described above.
 
  Principles of Consolidation
 
     The accompanying financial statements consolidate the accounts of the Bank
and all of its subsidiaries. All material intercompany transactions and accounts
have been eliminated.
 
  Principles of Statements of Cash Flows
 
     For purposes of reporting cash flows, cash and cash equivalents include
cash on hand, amounts due from banks, and federal funds sold. Generally, federal
funds are sold for one business day. In addition, the Bank considers all debt
securities with maturities of three months or less to be cash equivalents. The
statements of cash flows present gross cash receipts and disbursements from
lending and deposit gathering activities.
 
  Debt Securities
 
     On December 31, 1993, the Bank adopted SFAS No. 115, "Accounting for
Certain Investments in Debt and Equity Securities." The statement requires
classification of investments in debt and equity securities into one of three
categories: held to maturity, available for sale, or trading. At the time of
purchase, the Bank designates a security into one of these three categories.
 
     Debt securities classified as held to maturity are those which the Bank has
the positive intent and ability to hold to maturity. These securities are
carried at cost adjusted for the amortization of the related premiums or
accretion of the related discounts into interest income using methods
approximating the level-yield method or a method based on principal repayments
over the actual lives of the underlying loans. The Bank has the ability and it
is its policy to hold the debt securities so designated until maturity. The
Bank's current accounting policy states that no security with a remaining
maturity greater than 25 years may be designated as held to maturity.
 
     Securities classified as available for sale are those which the Bank
intends to hold for an indefinite period and may be sold in response to changes
in market interest rates, changes in the security's prepayment risk, the Bank's
need for liquidity, changes in the availability and yield of alternative
investments, and other asset/liability management needs. Securities classified
as available for sale are stated at fair value in the Bank's Statements of
Financial Condition. Changes in fair value are reported net of tax as a separate
component of stockholder's equity. At December 31, 1995, the Bank recorded a
$1.4 million unrealized gain, net of tax, on $422 million of debt securities
available for sale. Subsequent gains or losses are recorded into income when
these securities are sold.
 
     Trading securities are those which are bought and held principally for the
purpose of selling them in the near term. Trading securities include MBS held
for sale in conjunction with mortgage banking activities. Trading securities are
measured at fair value with changes in fair value included in earnings. At
December 31, 1995 and 1994, no securities were designated as trading securities.
 
     In November 1995, the Financial Accounting Standards Board (FASB) issued a
Special Report, "A Guide to Implementation of Statement 115 on Accounting for
Certain Investments in Debt and Equity Securities" (the Special Report). The
Special Report allowed a one-time opportunity, until December 31, 1995, for
institutions to reassess the appropriateness of their designations of all
securities and transfer debt securities from their held-to-maturity portfolio
before calendar year-end 1995, without calling into question their intent to
hold other debt securities to maturity in the future. The Bank reassessed its
securities designations in light of the Special Report guidance and made no
reclassifications.
 
                                       73
<PAGE>   77
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

  Loans Receivable
 
     Real estate loans are recorded at cost, net of the undisbursed loan funds,
loan discounts, unearned interest, deferred loan fees and provisions for
estimated credit losses. Interest on loans receivable is generally credited to
income when earned.
 
     Fees are charged for originating and in some cases, for committing to
originate loans. In accordance with SFAS No. 91, "Accounting for Nonrefundable
Fees and Costs Associated with Originating or Acquiring Loans and Initial Direct
Costs of Leases," loan origination and commitment fees, offset by certain direct
origination costs, are being deferred, and the net amounts amortized as an
adjustment of the related loans' yields over the contractual lives thereof.
Unamortized fees are recognized as income upon the sale or payoff of the loan.
 
     Unearned interest, premiums and discounts on consumer installment, and
equity and property improvement loans are amortized to income over the
contractual lives of the loans using a method which approximates the level-yield
method.
 
     On January 1, 1995, the Bank adopted SFAS No. 114, "Accounting by Creditors
for Impairment of a Loan," and SFAS No. 118, "Accounting by Creditors for
Impairment of a Loan -- Income Recognition and Disclosures." SFAS No. 114
requires the measurement of loan impairment to be based on the present value of
expected future cash flows discounted at the loan's original effective interest
rate or the fair value of the underlying collateral on collateral-dependent
loans. SFAS No. 118 amends SFAS No. 114 to allow a creditor to use existing
methods for recognizing interest income on impaired loans. The Bank's initial
adoption of these statements on January 1, 1995 did not have a material impact
on its financial position or results of operations.
 
  Mortgage Banking Activities
 
     The Bank's accounting policy designates all fixed-rate interest-sensitive
assets with maturities greater than or equal to 25 years (which possess normal
qualifying characteristics required for sale) as held for sale or available for
sale, along with single-family residential loans originated for specific sales
commitments. Fixed-rate interestsensitive assets with maturities less than 25
years, and all adjustable-rate interest-sensitive assets continue to be held for
investment unless designated as held for sale or available for sale at the time
of origination or purchase.
 
     Gains and losses on loan and debt security sales are determined using the
specific identification method. Gains and losses are recognized to the extent
that sales proceeds exceed or are less than the cost basis of the loans and debt
securities. Loans sold with servicing retained have included a normal servicing
fee to be earned by the Bank as income over the life of the loan. Loans held for
sale may be securitized into mortgage-backed securities and designated as
trading securities.
 
     In May 1995, the FASB issued SFAS No. 122, "Accounting for Mortgage
Servicing Rights." The statement eliminates the previous distinction between
purchased and originated mortgage servicing rights. The statement requires an
allocation of the cost basis of a mortgage loan between the mortgage servicing
rights and the loan when mortgage loans are sold or securitized and the
servicing is retained. The Bank adopted SFAS No. 122 effective April 1, 1995. As
a result of implementation, pretax earnings increased $344,000 ($224,000, after
tax). The amount of mortgage servicing rights capitalized during 1995 was
$486,000, including $109,000 in allocated costs for loans subject to definitive
sales agreements. Amortization for the year was $33,000.
 
     The servicing rights are being amortized over their estimated lives using a
method approximating a level yield method. The book value of capitalized
mortgage servicing rights at December 31, 1995 was $350,000. As all servicing
rights capitalized during the year have been on new loan originations and no
significant change in
 
                                       74
<PAGE>   78
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

interest rates or servicing rights' values have occurred, fair value is
estimated to approximate book value at December 31, 1995.
 
  Real Estate Acquired Through Foreclosure
 
     Real estate acquired through foreclosure is stated at the lower of cost or
fair value less costs to sell. In 1994, real estate acquired through foreclosure
included loans foreclosed in-substance, representing loans accounted for as
foreclosed property even though actual foreclosure had not occurred. Although
the collateral underlying these loans had not been repossessed, the borrower had
little or no equity in the collateral at its current estimated fair value.
Proceeds for repayment were expected to come only from the operation or sale of
the collateral, and it was doubtful the borrower would rebuild equity in the
collateral or repay the loan by other means in the foreseeable future. Included
in real estate acquired through foreclosure is $2.9 million of loans foreclosed
in-substance at December 31, 1994. Upon adoption of SFAS No. 114 in the first
quarter of 1995, $2.9 million of in-substance foreclosed assets were
reclassified on the Bank's Consolidated Statement of Financial Condition from
real estate acquired through foreclosure to loans receivable as SFAS No. 114
eliminated the in-substance designation. No other financial statement impact
resulted from the Bank's adoption of SFAS No. 114. Write downs to fair value,
disposition gains and losses, and operating income and costs are charged to the
allowance for estimated credit losses.
 
  Allowance for Estimated Credit Losses
 
     On a routine basis, management evaluates the adequacy of the allowances for
estimated losses on loans, investments, and real estate and establishes
additions to the allowances through provisions to expense. The Bank utilizes a
comprehensive internal asset review system and valuation allowance methodology.
Valuation allowances are established for each of the loan and real estate
portfolios for estimated losses. A number of factors are taken into account in
determining the adequacy of the level of allowances including management's
review of the extent of existing risks in the portfolios and of prevailing and
anticipated economic conditions, actual loss experience, delinquencies, regular
reviews of the quality of the loan, investment, and real estate portfolios and
examinations by regulatory authorities.
 
     Charge-offs are recorded on specific assets when it is determined that the
fair or net realizable value of an asset is below the carrying value. When a
loan is foreclosed, the asset is written down to fair value less costs to sell
based on a current appraisal of the subject property.
 
     While management uses currently available information to evaluate the
adequacy of allowances and to estimate identified losses for charge-off,
ultimate losses may vary from current estimates. Adjustments to estimates are
charged to earnings in the period in which they become known.
 
  Premises and Equipment
 
     Depreciation and amortization of premises and equipment are provided using
the straight-line method over the estimated useful lives of the various classes
of assets. Maintenance and repairs are charged to expense as incurred. Major
expenditures for renewals and betterments are capitalized and depreciated over
their estimated useful lives.
 
  Interest Rate Exchange Agreements
 
     The derivative financial instruments approved for the Bank to use to hedge
its exposure to interest rate risk (IRR) include: interest rate swaps, interest
rate caps, interest rate collars, interest rate futures, and put and call
options. These instruments are used only to hedge asset and liability portfolios
and are not used for
 
                                       75
<PAGE>   79
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

speculative purposes. Premiums, discounts, and fees associated with interest
rate exchange agreements are amortized to expense on a straight-line basis over
the contractual lives of the agreements. The net interest received or paid is
reflected in interest expense as a cost of hedging. Gains or losses resulting
from the early cancellation of agreements hedging assets and liabilities which
remain outstanding are deferred and amortized over the remaining contractual
lives. Gains or losses are recognized in the current period if the hedged asset
or liability is retired.
 
  Income Taxes
 
     The Bank files a consolidated federal income tax return with Southwest.
Income taxes for the Bank are provided for on a separate return basis. On
January 1, 1993, the Bank adopted SFAS No. 109, "Accounting for Income Taxes."
SFAS No. 109 supersedes Accounting Principles Board Opinion (APB) No. 11 and
SFAS No. 96. The statement utilizes the liability method for recognition and
measurement of income taxes and allows recognition of deferred tax assets. SFAS
No. 109 generally eliminates on a prospective basis, APB No. 23 exceptions,
including the tax bad debt reserve of savings and loan institutions. Under SFAS
No. 109, no deferred taxes are provided on bad debt reserves arising prior to
December 31, 1987, unless it becomes apparent that those differences will
reverse in the foreseeable future. Deferred taxes are provided on bad debt
reserves arising after December 31, 1987. The Bank adopted SFAS No. 109 on a
prospective basis, with the cumulative effect of this accounting change
amounting to a reduction of financial statement tax liability of $3 million in
1993.
 
  Pension Plan
 
     It is the policy of the Bank to reflect in the projected benefit obligation
all benefit improvements to which the Bank is committed as of the current
valuation date. The Bank uses the market value of assets to determine pension
expense and amortizes the increases in prior service costs over the expected
future service of active participants as of the date such costs are first
recognized.
 
  Reclassifications
 
     Certain reclassifications have been made to conform the prior years with
the current year presentation.
 
  Note B -- Fair Value of Financial Instruments
  ---------------------------------------------

     Fair value estimates of financial instruments were made at a discrete point
in time based on relevant market information and other information about the
financial instruments. Because no active market exists for a significant portion
of the Bank's financial instruments, fair value estimates were based on
judgments regarding current economic conditions, risk characteristics of various
financial instruments, prepayment assumptions, future expected loss experience,
and other factors. These estimates are subjective in nature and involve
uncertainties and matters of significant judgment and therefore cannot be
considered as precise. Changes in assumptions could significantly affect the
estimates.
 
     The fair value estimates are disclosed based on existing on- and
off-balance sheet financial instruments, without attempting to estimate the
value of existing and anticipated future customer relationships and the value of
assets and liabilities that were not considered financial instruments.
Significant assets and liabilities that were not considered financial assets or
liabilities include the Bank's retail branch network; deferred tax assets and
liabilities; furniture, fixtures, and equipment; and goodwill.
 
     The Bank intends to hold a significant portion of its assets and
liabilities to their stated maturities. Therefore, the Bank does not intend to
realize any significant differences between carrying value and fair value
 
                                       76
<PAGE>   80
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

through sale or other disposition. No attempt should be made to adjust
stockholder's equity to reflect the following fair value disclosures.
 
     Fair value estimates, methods, and assumptions are set forth below for the
Bank's financial instruments as of December 31 (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                           1995                      1994
                                                  -----------------------   -----------------------
                                                   CARRYING       FAIR       CARRYING       FAIR
                                                    VALUE        VALUE        VALUE        VALUE
                                                  ----------   ----------   ----------   ----------
<S>                                               <C>          <C>          <C>          <C>
ASSETS
  Cash and due from banks.......................  $   46,759   $   46,759   $   35,262   $   35,262
  Cash equivalents..............................      72,991       72,991       88,660       88,660
  Debt securities available for sale............     422,421      422,421      529,400      529,400
  Debt securities held to maturity..............      64,254       63,675      101,880       99,403
  Loans receivable held for sale................       5,855        6,050        2,114        2,135
  Loans receivable, net.........................   1,070,081    1,093,972      936,037      897,723
  Federal Home Loan Bank stock..................      11,057       11,057       17,277       17,277
  Originated mortgage servicing rights..........         350          350           --           --

LIABILITIES
  Deposits......................................   1,266,071    1,267,516    1,239,949    1,238,127
  Securities sold under agreements to
     repurchase.................................     140,710      140,886      281,935      282,155
  Advances from FHLB............................     164,400      171,166       99,400       97,565
  Notes payable.................................       7,995        8,020        8,135        8,174
</TABLE>
 
<TABLE>
<CAPTION>
                                                                1995                  1994
                                                        --------------------   -------------------
                                                                      FAIR                   FAIR
                                                        COMMITMENT    VALUE    COMMITMENT   VALUE
                                                        ----------   -------   ----------   ------
<S>                                                     <C>          <C>       <C>          <C>
OFF-BALANCE SHEET
  Outstanding commitments to originate loans..........   $ 86,891    $   137    $ 46,387    $ (420)
  Commercial and other letters of credit..............      4,824         25         707         6
  Interest rate swaps.................................     98,200     (4,865)     72,450     2,986
  Loan servicing rights...............................    397,572      4,366     415,097     4,958
  Outstanding firm commitments to sell loans and
     MBS..............................................      7,475        (61)      2,544        (2)
  Outstanding master commitments to sell loans........     10,500         (2)    116,097       (14)
  Outstanding commitments to builders.................         --         --      10,543       (33)
</TABLE>
 
     The fair value of cash and due from banks, cash equivalents, and FHLB stock
was estimated as the carrying value. This was based upon the short-term nature
of the instruments and in the case of FHLB stock, the book value represents the
price at which the FHLB will redeem the stock. The fair value of debt securities
held to maturity, debt securities available for sale, and loans receivable held
for sale was estimated using direct broker quotes and quoted market prices, with
the exception of privately issued debt securities and collateralized mortgage
obligation (CMO) residuals. Privately issued debt securities were valued based
on the estimated fair value of the underlying loans. CMO residuals were valued
using the discounted estimated future cash flows from these investments. The
fair value for securities sold under agreements to repurchase and notes payable
was estimated by discounting the future cash flows using market and dealer
quoted rates available to the Bank for debt with the same remaining maturities
and characteristics. The fair value for advances from FHLB was estimated using
the quoted cost to prepay the advances.
 
                                       77
<PAGE>   81
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

     Fair values for loans receivable were estimated for portfolios of loans
with similar financial characteristics. Loans were segregated by type, such as
commercial, commercial real estate, residential mortgage, installment, and other
consumer. Each loan category was further segregated into fixed- and
adjustable-rate interest terms. Fair value for single-family residential loans
was estimated by discounting the estimated future cash flows from these
instruments using quoted market rates and dealer prepayment assumptions. Fair
value for commercial mortgage, construction, land, and other commercial loans
was derived by discounting the estimated future cash flows from these
instruments using the rate that loans with similar maturity and underwriting
characteristics would be made on December 31, 1995 or 1994, as applicable. Fair
value for consumer loans was estimated using dealer quotes for securities backed
by similar collateral. The book value for the allowance for estimated credit
losses was used as the fair value estimate for credit losses within the entire
loan portfolio. Originated servicing rights capitalized during the year have
been on new loan originations. These new loan originations have had no
significant adverse changes in interest rates or servicing rights values during
the year. Fair value of originated servicing rights is estimated to approximate
book value at December 31, 1995.
 
     The fair value of commitments to originate loans was estimated by
calculating a theoretical gain or loss on the sale of funded loans considering
the difference between current levels of interest rates and the committed loan
rates. Letters of credit were valued based on fees currently charged for similar
agreements. The fair value of interest rate swaps was determined by using
various dealer quotes. The fair value for loan servicing rights originated prior
to 1995 was estimated based upon dealer and market quotes for the incremental
price paid for loans sold servicing released, adjusted for the age of the
portfolio and the type of loan. Outstanding firm and master commitments to
purchase and sell loans and debt securities were valued based on the market and
dealer quotes to terminate or fill the commitments.
 
     The fair value of demand, savings, and money market deposits was estimated
at book value as reported in the financial statements since it represents the
amount payable on demand. The fair value of fixed maturity deposits was
estimated using the rates currently offered by the Bank for deposits with
similar remaining maturities. The fair value of deposits does not include an
estimate of the long-term relationship value of the Bank's deposit customers or
the benefit that results from the low cost funding provided by deposit
liabilities compared to the cost of borrowing funds in the market.
 
  Note C -- Cash Equivalents
  --------------------------

     Cash equivalents are stated at cost, which approximates fair value, and
include the following (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                            DECEMBER 31,
                                                         -------------------
                                                          1995        1994
                                                         -------     -------
    <S>                                                  <C>         <C>
    Securities purchased under resale agreements.......  $67,789     $77,657
    Federal funds sold.................................    5,202      11,003
                                                         -------     -------
                                                         $72,991     $88,660
                                                         =======     =======
</TABLE>
 
     Securities purchased under resale agreements of $67.8 million at December
31, 1995 and $77.7 million at December 31, 1994 matured within 12 days and 11
days, respectively, and called for delivery of the same securities. The
collateral for these agreements consisted of debt securities which at December
31, 1995 and 1994 were held on the Bank's behalf by its safekeeping agents for
various investment bankers. The securities purchased under resale agreements
represented 39 percent of the Bank's stockholder's equity at December 31, 1995
and 47 percent at December 31, 1994.
 
                                       78
<PAGE>   82
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

     The average amount of securities purchased under resale agreements
outstanding during the years ended December 31, 1995 and 1994 were $31.5 million
and $36.2 million, respectively. The maximum amount of resale agreements
outstanding at any month end was $73.2 million during 1995 and $77.7 million
during 1994.
 
  Note D -- Debt Securities Held to Maturity and Debt Securities Available for
            ------------------------------------------------------------------
            Sale
            ----

     Debt securities held to maturity are stated at amortized cost. The yields
are computed based upon amortized cost. The amortized cost, estimated fair
values, and yields of debt securities held to maturity are as follows (thousands
of dollars):
 
<TABLE>
<CAPTION>
                                                             TOTAL        TOTAL      ESTIMATED
                                               AMORTIZED   UNREALIZED   UNREALIZED     FAIR
                DECEMBER 31, 1995                COST        GAINS        LOSSES       VALUE     YIELD
    -----------------------------------------  ---------   ----------   ----------   ---------   -----
    <S>                                         <C>         <C>          <C>          <C>         <C>
    Corporate issue MBS......................   $ 43,964      $ 68        $  964      $43,068    7.99%
    U.S. Treasury securities.................     20,290       317            --       20,607    7.37%
                                                --------      ----        ------      -------    ----
              Total..........................   $ 64,254      $385        $  964      $63,675    7.79%
                                                ========      ====        ======      =======    ====
    DECEMBER 31, 1994
    -----------------
    Corporate issue MBS......................   $ 60,922      $ 50        $2,292      $58,680    7.25%
    U.S. Treasury securities.................     40,958        --           235       40,723    8.01%
                                                --------      ----        ------      -------    ----
              Total..........................   $101,880      $ 50        $2,527      $99,403    7.55%
                                                ========      ====        ======      =======    ====
</TABLE>
 
     The following schedule of the expected maturity of debt securities held to
maturity is based upon dealer prepayment expectations and historical prepayment
activity (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                          EXPECTED/CONTRACTUAL MATURITY
                                             -------------------------------------------------------
                                                        AFTER       AFTER        AFTER
                                                       ONE YEAR   FIVE YEARS   TEN YEARS
                                                         BUT         BUT          BUT
                                             WITHIN     WITHIN      WITHIN      WITHIN       TOTAL
                                               ONE       FIVE        TEN        TWENTY     AMORTIZED
               DECEMBER 31, 1995              YEAR      YEARS       YEARS        YEARS       COST
    ---------------------------------------  -------   --------   ----------   ---------   ---------
    <S>                                      <C>       <C>          <C>           <C>       <C>
    Corporate issue MBS....................  $11,360   $27,853      $4,596        $155      $43,964
    U.S. Treasury securities...............   20,290        --          --          --       20,290
                                             -------   -------      ------        ----      -------
              Total........................  $31,650   $27,853      $4,596        $155      $64,254
                                             =======   =======      ======        ====      =======
</TABLE>
 
     Debt securities available for sale are stated at fair value. The yields are
computed based upon amortized cost. The amortized cost, estimated fair values,
and yields of debt securities available for sale are as follows (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                           TOTAL        TOTAL       ESTIMATED
                                             AMORTIZED   UNREALIZED   UNREALIZED      FAIR
               DECEMBER 31, 1995               COST        GAINS        LOSSES        VALUE     YIELD
    ---------------------------------------  ---------   ----------   ----------    ---------   -----
    <S>                                       <C>          <C>          <C>          <C>        <C>
    GNMA -- MBS............................   $  5,615     $  318       $   --       $  5,933   8.27%
    FHLMC -- MBS...........................    234,955      4,417          446        238,926   7.45%
    FNMA -- MBS............................     96,220        602        1,928         94,894   7.07%
    CMO....................................     67,042         28          711         66,359   5.50%
    Corporate issue MBS....................     16,420         22          133         16,309   7.25%
                                              --------     ------       ------       --------   ----
              Total........................   $420,252     $5,387       $3,218       $422,421   7.06%
                                              ========     ======       ======       ========   ====
</TABLE>
 
                                       79
<PAGE>   83
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)
 
<TABLE>
<CAPTION>
                                                            TOTAL         TOTAL      ESTIMATED
                                               AMORTIZED  UNREALIZED    UNREALIZED     FAIR
               DECEMBER 31, 1994                 COST       GAINS         LOSSES       VALUE    YIELD
    ----------------------------------------   ---------  ----------    ----------   ---------  -----
    <S>                                        <C>          <C>          <C>         <C>        <C>
    GNMA -- MBS.............................   $  6,564     $   70       $   237     $  6,397   8.29%
    FHLMC -- MBS............................    307,082        745         6,931      300,896   6.64%
    FNMA -- MBS.............................    112,892        154         3,938      109,108   7.11%
    CMO.....................................     92,097        928         4,645       88,380   5.92%
    Corporate issue MBS.....................     20,225         11           719       19,517   7.24%
    Obligations of U.S. Government
      corporations and agencies.............      5,105         --             3        5,102   5.83%
                                               --------     ------       -------     --------   ----
              Total.........................   $543,965     $1,908       $16,473     $529,400   6.65%
                                               ========     ======       =======     ========   ====
</TABLE>
 
     The following schedule reflects the expected maturity of MBS and CMO and
the contractual maturity of all other debt securities available for sale. The
expected maturity of MBS and CMO are based upon dealer prepayment expectations
and historical prepayment activity, and can change based upon a number of
factors, including the level of market interest rates (thousands of dollars).
 
<TABLE>
<CAPTION>
                                                    EXPECTED/CONTRACTUAL MATURITY
                                  -----------------------------------------------------------------
                                                AFTER         AFTER          AFTER
                                               ONE YEAR     FIVE YEARS     TEN YEARS
                                                 BUT           BUT            BUT
                                   WITHIN       WITHIN        WITHIN        WITHIN         TOTAL
                                    ONE          FIVE          TEN          TWENTY       ESTIMATED
         DECEMBER 31, 1995          YEAR        YEARS         YEARS          YEARS       FAIR VALUE
    ----------------------------  --------     --------     ----------     ---------     ----------
    <S>                           <C>          <C>           <C>            <C>           <C>
    GNMA--MBS...................  $  1,375     $  3,780      $   778        $    --       $  5,933
    FHLMC--MBS..................    60,947      148,188       25,625          4,166        238,926
    FNMA--MBS...................    14,808       46,644       22,346         11,096         94,894
    CMO.........................    24,400       41,661          298             --         66,359
    Corporate issue MBS.........     3,027       10,855        1,661            766         16,309
                                  --------     --------      -------        -------       --------
              Total.............  $104,557     $251,128      $50,708        $16,028       $422,421
                                  ========     ========      =======        =======       ========
</TABLE>
 
     Proceeds, gains, and losses from the sales of debt securities are
summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                               1995 SALES                       1994 SALES                        1993 SALES
                      -----------------------------    -----------------------------    ------------------------------
                      PROCEEDS    GAINS    (LOSSES)    PROCEEDS    GAINS    (LOSSES)    PROCEEDS    GAINS     (LOSSES)
                      --------    -----    --------    --------    -----    --------    --------    ------    --------
<S>                   <C>         <C>      <C>         <C>         <C>      <C>         <C>         <C>       <C>
Held to maturity....   $4,420     $ --       $ --       $   --      $--       $ --      $     --    $   --      $  --
Available for
  sale..............    3,118      970         --           --       --         --       360,853     8,317       (344)
Trading.............       --       --         --        5,074       56        (22)           --        --         --
                       ------     ----       ----       ------      ---       ----      --------    ------      -----
Total...............   $7,538     $970       $ --       $5,074      $56       $(22)     $360,853    $8,317      $(344)
                       ======     ====       ====       ======      ===       ====      ========    ======      =====
</TABLE>
 
     In 1991, the Bank purchased $10 million of adjustable-rate MBS issued by
the Resolution Trust Corporation. The securities were rated AA by Standard &
Poor's (S&P) and Aa2 by Moody's on the dates of issuance and purchase. When the
Bank implemented SFAS No. 115 on December 31, 1993, these securities were
designated as held to maturity. The securities were still rated AA and Aa2 at
that time. The loans underlying the securities were affected by high delinquency
and foreclosure rates, and higher than anticipated losses on the ultimate
disposition of real estate acquired through foreclosure. This resulted in rating
agency downgrades of the securities beginning in July 1994, and substantial
deterioration in the amount of the loss absorption capacity provided by credit
enhancement features. At December 31, 1994, the securities were performing
according to their contractual terms, and all realized losses from the
disposition of foreclosed real
 
                                       80
<PAGE>   84
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

estate were being absorbed by credit enhancement features of the securities. In
April 1995, S&P and Moody's lowered their ratings on the securities to the below
investment grade ratings of BB and Ba3, respectively. As a result of this
deterioration, the Bank determined that the securities should be considered
"other than temporarily" impaired under the provisions of SFAS No. 115. A pretax
loss of $1.9 million was recorded as a credit-related charge-off through the
valuation allowance for debt securities in the second quarter. In June 1995, the
Bank sold these securities. No additional loss was recorded at the time of sale.
 
     Also during the second quarter of 1995, the Bank sold a $1.5 million
security from its available for sale portfolio at a loss of $181,000. The
security was a privately issued MBS whose credit rating was downgraded by
Moody's to Baa3 in April 1995. As a result of the downgrade, the Bank sold the
security and recorded the loss as a credit related charge-off to the general
valuation allowance for debt securities.
 
     In 1993, the Bank sold $334 million of MBS to effect the sale of
Arizona-based deposit liabilities to World and to maintain the Bank's IRR
position. The sale of the securities resulted in a gain of $7.4 million ($4.9
million after tax) included in gain on sale of debt securities in the Statements
of Operations for 1993.
 
  Note E -- Loans Receivable and Loans Receivable Held for Sale
  -------------------------------------------------------------
 
     Loans receivable held for investment, recorded at amortized cost, are
summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                       DECEMBER 31,
                                                                ---------------------------
                                                                   1995             1994
                                                                ----------       ----------
    <S>                                                         <C>              <C>
    Loans collateralized by real estate:
      Conventional single-family residential..................  $  529,076       $  489,649
      FHA and VA insured single-family residential............      40,939           33,823
      Commercial mortgage.....................................     178,507          178,076
      Construction and land...................................     137,728           90,992
                                                                ----------       ----------
                                                                   886,250          792,540
    Commercial secured........................................      57,647           40,349
    Commercial unsecured......................................       4,678            2,317
    Consumer installment:
      Automobile..............................................      59,540           43,279
      Recreational vehicle, marine, and mobile home...........      98,186           76,181
    Consumer unsecured........................................       7,128            6,570
    Equity and property improvement...........................      29,216           26,054
    Deposit accounts..........................................       2,392            2,659
                                                                ----------       ----------
                                                                 1,145,037          989,949
                                                                ----------       ----------
    Undisbursed proceeds......................................     (68,646)         (41,702)
    Allowance for estimated credit losses.....................     (16,353)         (17,659)
    Premiums..................................................       9,314            5,969
    Deferred fees.............................................      (5,362)          (4,999)
    Accrued interest..........................................       6,091            4,479
                                                                ----------       ----------
                                                                   (74,956)         (53,912)
                                                                ----------       ----------
    Loans receivable held for investment......................  $1,070,081       $  936,037
                                                                ==========       ==========
</TABLE>
 
                                       81
<PAGE>   85
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

     Loans receivable held for sale are stated at the lower of aggregate cost or
market and are summarized as follows:
 
     Loans collateralized by single-family residential real estate (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                    DECEMBER 31,
                                                  ----------------
                                                   1995      1994
                                                  ------    ------
    <S>                                           <C>       <C>
    Conventional................................  $2,071    $  508
    FHA and VA insured..........................   3,079     1,606
                                                  ------    ------
                                                   5,150     2,114
    Small Business Administration (SBA).........     705        --
                                                  ------    ------
    Loans receivable held for sale..............  $5,855    $2,114
                                                  ======    ======
</TABLE>
 
     Additional loan information (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                         DECEMBER 31,
                                                                     ---------------------
                                                                       1995         1994
                                                                     --------     --------
    <S>                                                              <C>          <C>
    Average portfolio yield at end of year.........................      8.34%        8.11%
    Principal balance of loans serviced for others (including
      $58,424 and $67,871 of loans serviced for MBS owned by the
      Bank)........................................................  $430,100     $415,097
    Adjustable-rate real estate loans..............................  $316,393     $286,868
    Outstanding commitments to originate loans.....................  $ 86,891     $ 46,387
    Unused lines of credit.........................................  $ 68,176     $ 57,180
    Standby letters of credit......................................  $  4,824     $    707
    Outstanding commitments to builders............................  $     --     $ 10,543
</TABLE>
 
     Many of the Bank's adjustable-rate loans contain limitations as to both the
amount the interest rate can change at each repricing date (periodic caps) and
the maximum rate the loan can be repriced to over the lifetime of the loan
(lifetime caps). At December 31, 1995, periodic caps in the adjustable loan
portfolio ranged from 25 basis points to 500 basis points. Lifetime caps ranged
from 9.75 to 22 percent.
 
     Outstanding commitments to originate loans represent agreements to
originate real estate secured loans to customers at specified rates of interest.
Commitments generally expire in 30 to 60 days and may require payment of a fee.
Some of the commitments are expected to expire without being drawn upon,
therefore the total commitments do not necessarily represent future cash
requirements.
 
     The Bank has designated portions of its portfolio of residential real
estate loans and SBA loans as held for sale. These loans are carried at the
lower of aggregate cost, market, or sales commitment price. In January 1994, the
Bank sold its credit card portfolio held for sale and recorded a gain of
approximately $1.7 million ($1.1 million net of charge-offs).
 
     At December 31, 1995, 32 percent or $18.5 million of the Bank's outstanding
commercial secured loan portfolio consisted of loans to borrowers in the gaming
industry, with additional unfunded commitments of $9.9 million. These loans are
generally secured by real estate, machinery, and equipment. The Bank's portfolio
of loans, collateralized by real estate, consists principally of real estate
located in Nevada, California, and Arizona. Collectibility is, therefore,
somewhat dependent on the economies and real estate values of these areas and
industries.
 
     The Bank's loan approval process is intended to assess both: (i) the
borrower's ability to repay the loan by determining whether the borrower meets
the Bank's established underwriting criteria, and (ii) the adequacy of the
proposed security by determining whether the appraised value of the security
property is sufficient for the proposed loan.
 
                                       82
<PAGE>   86
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

     It is the general policy of the Bank not to make single-family residential
loans when the loan-to-value ratio exceeds 80 percent unless the loans are
insured by private mortgage insurance, FHA insurance or VA guarantee.
Residential tract construction loans are generally underwritten with a
stabilized loan-to-value ratio of less than 85 percent, while commercial income
property loans are generally underwritten with a ratio less than or equal to 75
percent.
 
     Interest payments received on impaired loans are recorded as interest
income unless collection of the remaining recorded investment is in doubt, in
which case payments received are recorded as reductions of principal. Interest
income recognized on impaired loans during the year ended December 31, 1995
consisted of $2.8 million using an accrual basis of accounting and $21,000 using
a cash basis of accounting. The average balance outstanding of impaired loans
for the year ended December 31, 1995 was $23.9 million, while at December 31,
1995, the outstanding impaired loan balance was $25.3 million.
 
     Premiums on loans primarily represent premiums paid to dealers for
originating consumer installment loans for the Bank. Prepayments of the loans
can adversely affect the yield of the installment portfolio should the unearned
premium be uncollectible from the dealer due to the contractual terms of the
dealer agreement or the credit worthiness of the dealer.
 
  Note F -- Allowances for Estimated Credit Losses
  ------------------------------------------------

     Activity in the allowances for losses on loan, debt securities, and real
estate is summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                            INVESTMENTS
                                                               LOANS          IN REAL
                                                             RECEIVABLE       ESTATE         TOTAL
                                                             ----------     -----------     --------
<S>                                                            <C>            <C>           <C>
Balance at 12/31/92........................................    $17,228        $ 1,463       $ 18,691
  Provisions for estimated losses..........................      6,212          1,010          7,222
  Charge-offs..............................................     (9,812)        (1,538)       (11,350)
  Recoveries...............................................      2,623             --          2,623
                                                               -------        -------       --------
Balance at 12/31/93........................................     16,251            935         17,186
  Provisions for estimated losses..........................      7,230            163          7,393
  Charge-offs..............................................     (7,887)        (1,412)        (9,299)
  Recoveries...............................................      2,065            790          2,855
                                                               -------        -------       --------
Balance 12/31/94...........................................    $17,659        $   476       $ 18,135
                                                               =======        =======       ========
</TABLE>
 
<TABLE>
<CAPTION>
                                                   LOANS RECEIVABLE
                                                  ------------------   FORECLOSED   INVESTMENTS
                                         DEBT      IMPAIRED   OTHER       REAL        IN REAL
                                      SECURITIES    LOANS     LOANS      ESTATE       ESTATE         TOTAL
                                      ----------   --------  -------   ----------   -----------     --------
<S>                                    <C>         <C>       <C>          <C>          <C>          <C>
Balance at 12/31/94*...............    $    --     $ 3,038   $14,621      $  --        $ 476        $ 18,135
  Provisions for estimated
     losses........................      2,077       2,908     2,838        326          162           8,311
  Charge-offs......................     (2,077)     (2,908)   (5,716)      (395)        (139)        (11,235)
  Recoveries.......................         --          35     1,537        336          364           2,272
                                       -------     -------   -------      -----        -----        --------
Balance at 12/31/95................    $    --     $ 3,073   $13,280      $ 267        $ 863        $ 17,483
                                       =======     =======   =======      =====        =====        ========
</TABLE>
 
- ---------------
* Allowance for estimated loss balances for impaired and other loans at December
  31, 1994 have been reclassified to reflect adoption of SFAS No. 114.
 
                                       83
<PAGE>   87
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

     Included in the "other loans" category are charge-offs, net of recoveries,
of $585,000 for single-family residential loans and $3.3 million for consumer
loans. These are considered homogeneous pools of loans that are excluded from
the definition of impaired loans for evaluation under SFAS No. 114.
 
     The Bank establishes allowances for estimated credit losses by portfolio
through charges to expense. On a regular basis, management reviews the level of
allowances which have been provided against the portfolios. Adjustments are made
thereto in light of the level and trends of problem loans, portfolio growth, and
current economic conditions.
 
     Write-downs to fair value, disposition gains and losses, and operating
income and costs affiliated with real estate acquired through foreclosure are
charged to the allowance for estimated credit losses.
 
  Note G -- Premises and Equipment
  --------------------------------
 
     Premises and equipment are summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                               DECEMBER 31,               
                                                            -------------------           
                                                             1995        1994             
                                                            -------     -------           
    <S>                                                     <C>         <C>               
    Land..................................................  $ 3,435     $ 4,066           
    Buildings and leasehold improvements..................   19,130      18,381           
    Furniture, fixtures, and equipment....................   28,899      26,970           
                                                            -------     -------           
                                                             51,464      49,417           
    Less: Accumulated depreciation and amortization.......   31,182      27,751           
                                                            -------     -------           
      Premises and equipment, net.........................  $20,282     $21,666           
                                                            =======     =======           
</TABLE>
 
     The Bank leases certain of its facilities under noncancelable operating
lease agreements. The more significant of these leases have terms expiring
between 1996 and 2029 and provide for renewals subject to certain escalation
clauses. The following is a schedule of net future minimum rental payments under
various operating lease agreements that have initial or remaining noncancelable
lease terms in excess of one year as of December 31, 1995 (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                              TOTAL MINIMUM        TOTAL MINIMUM        NET MINIMUM
                                             LEASE PAYMENTS      SUBLEASE RECEIPTS     LEASE PAYMENTS
                                             ---------------     -----------------     --------------
    <S>                                      <C>                 <C>                   <C>
    Year Ending December 31:
           1996............................      $ 5,632              $ 2,739              $ 2,893
           1997............................        5,558                2,240                3,318
           1998............................        5,128                1,824                3,304
           1999............................        4,468                1,516                2,952
           2000............................        4,293                  961                3,332
         Thereafter........................       45,513                1,300               44,213
                                                 -------              -------              -------
                                                 $70,592              $10,580              $60,012
                                                 =======              =======              =======
</TABLE>
 
Net rental expense was approximately $2.5 million in 1995, $2.7 million in 1994,
and $3.1 million in 1993.
 
                                       84
<PAGE>   88
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

  Note H -- Deposits
  ------------------

     Deposits are summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                        DECEMBER 31,
                                                                  -------------------------
                                                                     1995           1994
                                                                  ----------     ----------
    <S>                                                           <C>            <C>
    Interest-bearing demand and money market deposits...........  $  322,847     $  313,949
    Noninterest-bearing demand deposits.........................      98,923         69,294
    Savings deposits............................................      67,641         78,876
                                                                  ----------     ----------
              Total transaction accounts........................     489,411        462,119
                                                                  ----------     ----------
    Certificates of deposit:
       $100,000.................................................     605,321        608,872
       $100,000.................................................     171,339        168,958
                                                                  ----------     ----------
    Total certificates of deposit...............................     776,660        777,830
                                                                  ----------     ----------
                                                                  $1,266,071     $1,239,949
                                                                  ==========     ==========
    Average annual interest rate at end of year.................        4.19%          3.97%
                                                                  ==========     ==========
</TABLE>
 
     The above balance includes $5.9 million deposited by the State of Nevada
that is collateralized by single-family residential loans and debt securities
with a fair value of approximately $6.3 million at December 31, 1995. There were
no brokered deposits at December 31, 1995 and 1994.
 
     Interest expense on deposits for the years ended December 31, is summarized
as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                             1995        1994        1993
                                                            -------     -------     -------
    <S>                                                     <C>         <C>         <C>
    Interest-bearing demand and money market deposits.....  $10,327     $ 8,740     $ 8,578
    Savings deposits......................................    1,718       2,135       2,364
    Certificates of deposit...............................   39,893      33,241      46,701
                                                            -------     -------     -------
              Total interest expense on deposits..........  $51,938     $44,116     $57,643
                                                            =======     =======     =======
</TABLE>
 
     Certificates of deposit maturity schedule (thousands of dollars):
 
<TABLE>
<CAPTION>
                                        CERTIFICATES MATURING ON OR PRIOR TO DECEMBER 31,
                                ------------------------------------------------------------------
      INTEREST RATE CATEGORY      1996        1997       1998       1999       2000     THEREAFTER
    --------------------------  --------    --------    -------    -------    -------   ----------
    <S>                         <C>         <C>         <C>        <C>        <C>         <C>
    2.99% and lower...........  $  8,199    $     36    $    12    $    12    $    15     $     6
    3.00% to 3.99%............    10,194           7         --         --         --          --
    4.00% to 4.99%............   279,124       8,831      1,795         24         --          92
    5.00% to 5.99%............   212,653      47,565     22,667     10,232     10,843       7,483
    6.00% to 6.99%............     7,338      41,076      5,561     20,807     12,316      12,442
    7.00% to 7.99%............    35,013       5,714         15     15,350        369         212
    8.00% to 8.99%............        74          --         --         --        148          --
    9.00% and over............        --          36        399         --         --          --
                                --------    --------    -------    -------    -------     -------
                                $552,595    $103,265    $30,449    $46,425    $23,691     $20,235
                                ========    ========    =======    =======    =======     =======
</TABLE>
 
                                       85
<PAGE>   89
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

  Note I -- Securities Sold Under Agreements to Repurchase
  --------------------------------------------------------

     The Bank sells securities under agreements to repurchase (reverse
repurchase agreements). Reverse repurchase agreements are treated as borrowings
and are reflected as liabilities in the Bank's Statements of Financial
Condition. Reverse repurchase agreements are summarized as follows (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                                         DECEMBER 31,
                                                                     ---------------------
                                                                       1995         1994
                                                                     --------     --------
    <S>                                                              <C>          <C>
    Balance at year end............................................  $140,710     $281,935
    Accrued interest payable at year end...........................     1,417        3,335
    Daily average amount outstanding during year...................   175,618      222,620
    Maximum amount outstanding at any month end....................   282,374      281,935
    Weighted average interest rate during the year.................      6.20%        4.95%
    Weighted average interest rate on year-end balances............      6.10%        6.37%
</TABLE>
 
     All agreements are collateralized by MBS and U.S. Treasury notes and
require the Bank to repurchase identical securities as those which were sold.
The securities collateralizing the agreements are reflected as assets with a
carrying value of $473,000 less than the borrowing amount and a weighted average
maturity of 1.34 years. Agreements were transacted with the following dealers:
Morgan Stanley & Co., Inc.; Lehman Brothers; and Bear Stearns. Reverse
repurchase agreements are collateralized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                 --------------------------------------------
                                                         1995                    1994
                                                 --------------------    --------------------
                                                   BOOK        FAIR        BOOK        FAIR
                                                  VALUE       VALUE       VALUE       VALUE
                                                 --------    --------    --------    --------
    <S>                                          <C>         <C>         <C>         <C>
    MBS........................................  $120,181    $120,181    $258,477    $258,477
    U.S. Treasury notes........................    20,056      20,373      40,428      40,191
                                                 --------    --------    --------    --------
                                                 $140,237    $140,554    $298,905    $298,668
                                                 ========    ========    ========    ========
</TABLE>
 
     At December 31, 1995, borrowings of $37.1 million were outstanding in
accordance with a long-term agreement executed with one dealer. The agreement,
which allows for a maximum borrowing of $300 million with no minimum, matures in
July 2000. The interest rate on the borrowings is adjusted monthly based upon a
spread over or under the one month London Interbank Offering Rate (LIBOR),
dependent upon the underlying collateral.
 
     The Bank is also party to a separate flexible reverse repurchase agreement
(flex repo) totaling $4.4 million with an average rate of 8.86 percent at
December 31, 1995. A flex repo represents a long-term fixed-rate contract to
borrow funds through a primary dealer, collateralized by MBS with a flexible
repayment schedule. The principal balance of the Bank's flex repo agreement is
expected to mature in July 1996.
 
                                       86
<PAGE>   90
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

  Note J -- Borrowings
  --------------------
 
     Borrowings are summarized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                  DECEMBER 31,
                                              ---------------------
                                                1995         1994
                                              --------     --------
    <S>                                       <C>          <C>
    Advances from FHLB......................  $164,400     $ 99,400
    Notes payable...........................     7,995        8,135
                                              --------     --------
                                              $172,395     $107,535
                                              ========     ========
</TABLE>
 
     Borrowings coupon interest rates are as follows:
 
<TABLE>
<CAPTION>
                                                                1995              1994
                                                            -------------     -------------
    <S>                                                     <C>               <C>
    Advances from FHLB....................................  4.40% - 8.23%     4.30% - 8.23%
    Notes payable.........................................          8.50%     8.20% - 8.50%
</TABLE>
 
     Principal payments on borrowings at December 31, 1995 are due as follows
(thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                         ADVANCES
                                                         INTEREST          FROM        NOTES
                                                           RATE            FHLB       PAYABLE
                                                       -------------     --------     -------
    <S>                                                <C>               <C>           <C>
    12 months........................................  4.40% - 8.50%     $ 35,000      $7,995
    24 months........................................  5.92% - 8.23%       26,000          --
    36 months........................................  5.01% - 5.89%       25,000          --
    48 months........................................          8.23%       25,000          --
    60 months........................................  7.38% - 7.52%       50,000          --
    72 months........................................          7.52%        3,400          --
                                                                         --------      ------
                                                                         $164,400      $7,995
                                                                         --------      ------
    Weighted average effective interest rate.........                        6.68%       7.80%
                                                                         ========      ======
</TABLE>
 
     Borrowings are collateralized as follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                    DECEMBER 31,
                                                ---------------------
                                                  1995         1994
                                                --------     --------
    <S>                                         <C>          <C>
    MBS.......................................  $ 14,002     $ 13,971
    Real estate loans.........................   382,407      171,673
                                                --------     --------
                                                $396,409     $185,644
                                                ========     ========
</TABLE>
 
     In 1994, the FHLB established a financing availability for the Bank which
currently totals 25 percent of the Bank's assets with terms up to 360 months.
All borrowings from the FHLB must be collateralized by mortgages or securities.
 
                                       87
<PAGE>   91
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

  Note K -- Income Taxes
  ----------------------
 
     The Bank utilizes the accrual basis of accounting for tax purposes. Under
the Internal Revenue Code, the Bank is allowed a special bad debt deduction
(unrelated to the amount of losses charged to earnings) based on a percentage of
taxable income (currently eight percent). Under SFAS No. 109, no deferred taxes
are provided on tax bad debt reserves arising prior to December 31, 1987, unless
it becomes apparent that these differences will reverse in the foreseeable
future. At December 31, 1995, the tax bad debt reserves not expected to reverse
are $16.9 million, resulting in a retained earnings benefit of $5.9 million.
 
     Income tax expense (benefit) consists of the following (thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                                 YEAR ENDED DECEMBER 31,
                                                              -----------------------------
                                                               1995       1994       1993
                                                              ------     ------     -------
    <S>                                                       <C>        <C>        <C>
    Current
      Federal...............................................  $4,818     $5,276     $(6,051)
      State.................................................       8         17         (82)
                                                              ------     ------     -------
                                                               4,826      5,293      (6,133)
                                                              ------     ------     -------
    Deferred
      Federal...............................................     702        997      12,632
      State.................................................      --        101         210
      Tax rate change.......................................      --         --        (364)
                                                              ------     ------     -------
                                                                 702      1,098      12,478
                                                              ------     ------     -------
              Total income tax expense......................  $5,528     $6,391     $ 6,345
                                                              ======     ======     =======
</TABLE>
 
     The components of the net deferred income tax expense resulting from timing
differences in the recognition of revenue and expense for financial reporting
purposes in different accounting periods than for income tax purposes are as
follows (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                YEAR ENDED DECEMBER 31,
                                                             ------------------------------
                                                              1995        1994       1993
                                                             -------     ------     -------
    <S>                                                      <C>         <C>        <C>
    Deferred loan fees/costs...............................  $   603     $1,068     $  (186)
    Installment sales revenue..............................     (177)      (503)       (288)
    Provisions for credit losses...........................   (1,203)       (31)       (934)
    Book versus tax real estate income.....................    1,393        376      12,846
    Book versus tax depreciation...........................     (444)      (420)       (263)
    CMO residuals -- principal amortization................      350        473         827
    Delinquent interest....................................      592        (92)        611
    FHLB stock dividends...................................     (558)       251          54
    Other deferred income..................................      111         18         169
    Other expense and loss provisions not deductible until
      paid.................................................       35        (42)          6
    Tax rate change........................................       --         --        (364)
                                                             -------     ------     -------
              Deferred income tax expense..................  $   702     $1,098     $12,478
                                                             =======     ======     =======
</TABLE>
 
                                       88
<PAGE>   92
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

     The income tax benefit (payable) reported on the Bank's Statements of
Financial Condition include the following asset (liability) components
(thousands of dollars):
 
<TABLE>
<CAPTION>
                                                         DECEMBER 31,
                                                      ------------------
                                                       1995        1994
                                                      -------     ------
    <S>                                               <C>         <C>
    Current:                                     
      Federal.......................................  $ 1,352     $  452
      State.........................................        6         16
                                                      -------     ------
                                                        1,358        468
                                                      -------     ------
    Deferred:                                    
      Federal.......................................   (2,965)     3,587
      State.........................................       (6)        --
                                                      -------     ------
                                                       (2,971)     3,587
                                                      -------     ------
         Income tax benefit (payable)...............  $(1,613)    $4,055
                                                      =======     ======
</TABLE>
 
     At December 31, the net deferred tax asset (liability) is comprised of the
following items (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                       1995         1994
                                                                     --------     --------
    <S>                                                              <C>          <C>
    Deferred tax assets:
      Allowance for estimated credit losses........................  $  5,834     $  6,198
      Debt securities available for sale (SFAS No. 115)............        --        5,098
      Real estate held for sale....................................     4,240        5,267
      Delinquent interest..........................................       445        1,038
      Compensation/pension.........................................       549          483
      CMO residuals................................................        --          351
      Other........................................................        44          260
                                                                     --------     --------
              Total deferred tax assets............................    11,112       18,695
                                                                     --------     --------
    Deferred tax liabilities:
      Tax bad debt reserve.........................................    (1,215)      (2,887)
      Debt securities available for sale (SFAS No. 115)............      (759)          --
      Loan fees/costs..............................................    (5,951)      (5,188)
      Installment sales............................................    (1,263)      (1,441)
      Depreciation.................................................      (419)      (1,063)
      FHLB stock...................................................    (1,528)      (2,087)
      Other........................................................    (2,948)      (2,442)
                                                                     --------     --------
              Total deferred tax liabilities.......................   (14,083)     (15,108)
                                                                     --------     --------
                Total net deferred tax assets (liabilities)........  $ (2,971)    $  3,587
                                                                     ========     ========
</TABLE>
 
     No valuation allowance has been recorded for deferred tax assets as all
assets are expected to be realized through the terms of the tax sharing
agreement with the Company.
 
                                       89
<PAGE>   93
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

     The effective tax rates in 1995, 1994, and 1993 differ from the federal
statutory tax rate of 35 percent. The sources of these differences and the
effect of each are summarized as follows:
 
<TABLE>
<CAPTION>
                                                                    YEAR ENDED DECEMBER 31,
                                                                    -----------------------
                                                                    1995      1994     1993
                                                                    -----     ----     ----
    <S>                                                             <C>       <C>      <C>
    Computed "expected" tax provision.............................   35.0%    35.0%    35.0%
    Increase (reduction) in taxes resulting from:
      Bad debt deduction..........................................  (34.7)%     --       --
      Goodwill amortization, impairment, and write-offs...........  236.3%     9.6%    34.9%
      Tax rate change.............................................     --       --     (3.7)%
      Other.......................................................    1.4%     0.8%    (2.1)%
                                                                    -----     ----     ----
         Effective tax rate.......................................  238.0%    45.4%    64.1%
                                                                    =====     ====     ====
</TABLE>
 
     The provisions for income taxes related to the gain on sale of loans and
debt securities were $721,000 in 1995, $98,000 in 1994, and $3.4 million in
1993.
 
  Note L -- Regulatory Matters
  ----------------------------

  Regulatory Capital
 
     The Bank is subject to various capital adequacy requirements under a
uniform framework administered by the Federal banking agencies. Specific capital
guidelines require the Bank to maintain minimum amounts and ratios as set forth
below.
 
     The Federal Deposit Insurance Corporation Improvement Act of 1991 (FDICIA)
required the federal banking agencies to adopt regulations implementing a system
of progressive constraints as capital levels decline at banks and savings
institutions. The federal banking agencies have enacted uniform "prompt
corrective action" rules which classify banks and savings institutions into one
of five categories based upon capital adequacy, ranging from "well capitalized"
to "critically undercapitalized." Banks become subject to prompt corrective
action when their ratios fall below the "adequately capitalized" status. A
reconciliation of stockholder's equity, as shown in the Bank's Statements of
Financial Condition, to the FDICIA capital standards and the Bank's resulting
ratios are set forth in the table below (thousands of dollars):
 
<TABLE>
<CAPTION>
                                                DECEMBER 31, 1995                            DECEMBER 31, 1994
                                     ----------------------------------------     ----------------------------------------
                                       TOTAL          TIER 1         TIER 1         TOTAL          TIER 1         TIER 1
                                     RISK-BASED     RISK-BASED      LEVERAGE      RISK-BASED     RISK-BASED      LEVERAGE
                                     ----------     ----------     ----------     ----------     ----------     ----------
<S>                                  <C>            <C>            <C>            <C>            <C>            <C>
Stockholder's equity...............   $173,559       $173,559      $  173,559      $166,388       $166,388      $  166,388
Capital adjustments:
  Nonsupervisory goodwill..........    (38,287)       (38,287)        (38,287)      (40,376)       (40,376)        (40,376)
  Supervisory goodwill.............    (23,492)       (23,492)        (23,492)      (18,661)       (18,661)        (18,661)
  Goodwill impairment allowance....     11,823         11,823          11,823            --             --              --
  Real estate investment and
    mortgage servicing rights......     (1,283)          (367)           (367)       (1,325)          (194)           (194)
  Unrealized loss (gain), net of
    tax on debt securities
    available for sale.............     (1,409)        (1,409)         (1,409)        9,467          9,467           9,467
  General loan loss reserves.......     12,542             --              --        11,512             --              --
                                      --------       --------      ----------      --------       --------      ----------
Regulatory capital.................   $133,453       $121,827      $  121,827      $127,005       $116,624      $  116,624
                                      ========       ========      ==========      ========       ========      ==========
Regulatory capital ratio...........      13.35%         12.19%           7.07%        13.88%         12.75%           6.62%
Adequately capitalized required
  ratio............................       8.00%          4.00%           4.00%         8.00%          4.00%           4.00%
                                      --------       --------      ----------      --------       --------      ----------
Excess.............................       5.35%          8.19%           3.07%         5.88%          8.75%           2.62%
                                      ========       ========      ==========      ========       ========      ==========
Asset base.........................   $999,560       $999,560      $1,724,306      $914,812       $914,812      $1,760,801
                                      ========       ========      ==========      ========       ========      ==========
</TABLE>
 
                                       90
<PAGE>   94
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)
- ------------------------------------

     As of December 31, 1995 and 1994, PriMerit Bank exceeded the adequately
capitalized ratios and was categorized as "well capitalized."
 
     The decline in the Bank's risk-based capital ratios over prior year-end is
principally the result of the change in the amount of allowable supervisory
goodwill includable in capital and an increase in the risk-weighted asset base
caused by a higher level of real estate and commercial loans replacing
mortgage-backed securities, partially offset by year-to-date net income,
excluding goodwill amortization and impairment, of $12.5 million. At December
31, 1995, under fully phased-in capital rules applicable to the Bank at July 1,
1996, the Bank would have exceeded the "adequately capitalized" fully phased-in,
total risk-based, tier 1 risk-based, and tier 1 leverage ratios by $53.2
million, $81.6 million, and $52.6 million, respectively.
 
     The Office of Thrift Supervision (OTS) regulation requiring institutions
with IRR exposure classified as "above normal" to reduce their risk-based
capital has been indefinitely delayed. As measured by both the Bank's model and
the OTS model, the Bank has a "normal" classification of interest rate risk as
defined in the delayed regulation. Had the regulation been implemented, no
capital deduction would have been required during any period presented.
 
  Other Regulatory and Contractual Matters
 
     The Company, at the time that it acquired the Bank, stipulated in an
agreement with the Federal Home Loan Bank Board (predecessor to the OTS) that it
would assist the Bank in maintaining levels of regulatory capital required by
the regulations in effect at the time or as they were amended thereafter and
limited dividends from the Bank to specified amounts, so long as it controlled
the Bank. In July 1995, upon the request of the Company, the OTS terminated
these stipulations, such that capital distributions by the Bank and
capitalization of the Bank are now governed by the laws and regulations
governing all other thrifts. During 1995, the Bank paid the Company $500,000 in
cash dividends.
 
     Under the terms of the definitive sale agreement with Norwest, the Bank is
limited in the amount of dividends payable to the Company through the closing
date of the sale of $375,000 per quarter through June 30, 1996 and up to $3.5
million in the third quarter of 1996, dependant upon the timing of the closing
date of the sale.
 
     The deposit accounts of savings associations, including those of PriMerit,
are insured to the maximum extent permitted by law by the FDIC through the SAIF.
The deposit accounts of commercial banks are separately insured by the FDIC
through the bank insurance fund (BIF). Commercial banks and savings associations
are separately assessed annual deposit insurance premiums. For savings
associations, the deposit premiums range from 23 to 31 cents per $100 of
deposits and, under current requirements, will remain at that level until the
SAIF is capitalized at 1.25 percent of insured deposits. The SAIF is not
expected to reach this level of capitalization for several years. Under current
assessments, a number of plans have been proposed in Congress to deal with the
undercapitalization of the SAIF. Several proposals provide for a one-time
special assessment estimated to approximate 75 to 79 basis points, on
SAIF-insured deposits to fully capitalize the SAIF to 1.25 percent of insured
deposits. These proposals would subsequently reduce annual premiums to levels
similar to those of BIF-insured commercial banks and eventually merge the BIF
and SAIF insurance funds.
 
     Assuming a one-time special assessment was approved by Congress and became
law in 1996, and was immediately charged against results of operations, the
one-time assessment would approximate $10 million, pretax, for the Bank.
Management believes the Bank would continue to be classified as
"well-capitalized" under fully phased-in FDICIA capital rules and would not face
any liquidity issues as a result of such a one-time assessment.
 
                                       91
<PAGE>   95
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

  Note M -- Employee Benefits
  ---------------------------

  Pension Plan/Employees' 401(k) Plan
 
     The Bank maintains a defined benefit pension plan for substantially all of
its employees. The Bank's policy is to fund the pension expense accrued for each
year but not less than the minimum required contribution nor more than the tax
deductible limit. Commencing April 1994, the pension plan was curtailed.
Employees hired on or after that date will not be able to participate in the
pension plan, while existing employees will not be able to increase benefits
under the pension plan through additional service with the Bank. The Bank offers
all its eligible employees participation in the Employees' 401(k) plan of
PriMerit Bank. The 401(k) plan provides for purchases of certain investment
vehicles by eligible employees through annual payroll deductions of up to 15
percent of base compensation. The cost and liability of both plans are not
material.
 
  Other Benefits
 
     The Bank has contractual obligations with selected officers of the Bank
which require payment to the officers of additional one time compensation should
a change of control (as defined) of the Bank occur and additional one time
compensation to the officers if their employment is terminated subsequent to the
change of control. These contingent obligations total approximately $3 million
at December 31, 1995.
 
  Note N -- Asset/Liability Management
  ------------------------------------
 
     Asset/Liability Management is a unified process for managing the structure
and mix of the Bank's balance sheet and off-balance sheet financial instruments
to provide for optimum levels of net interest income while maintaining prudent
levels of IRR and liquidity. The Bank's Board of Directors has established
written policies governing the management of the Bank's IRR that include defined
acceptable levels of IRR and acceptable tools for the management of IRR within
these levels. Also included in the Board's written policies are defined
acceptable classes and uses of derivative financial instruments as tools in the
management of the Bank's IRR.
 
     IRR in general is one of several inherent risks of the financial services
industry. Profitable operation of the Bank depends in part on prudent acceptance
and successful management of IRR. There are two general forms of IRR, both of
which derive from future changes in interest rates: the risk that future levels
of net interest income will be reduced, and the risk that the Bank's net market
value will be reduced.
 
     IRR results from (a) timing differences in the maturity and/or repricing of
the Bank's assets, liabilities, and off-balance sheet contracts; (b) the
exercise of options embedded in the Bank's financial instruments and accounts,
such as prepayments of loans before scheduled maturity, caps on amounts of
interest rate movement permitted for adjustable-rate loans, and the withdrawals
of funds on deposit with and without stated terms to maturity; and (c) changes
in the spread relationships between lending and funding interest rates, referred
to as basis risk.
 
     Traditional measures of IRR have focused on that portion of the risk
resulting from timing differences in the maturity and/or repricing of assets,
liabilities, and off-balance sheet contracts, and are usually expressed in the
form of a static gap report. The "gap" for a given period is positive when
repricing and maturing assets exceed repricing and maturing liabilities within
that period. The gap for a given period is negative when repricing and maturing
liabilities exceed repricing and maturing assets within that period. A positive
or negative cumulative gap may indicate in a general way how the Bank's net
interest income should respond to interest rate fluctuations. A positive
cumulative gap for a given period would generally mean that rising interest
rates would be reflected in financial assets sooner than in financial
liabilities, resulting in higher net
 
                                       92
<PAGE>   96
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

interest income. A negative cumulative gap for a given period might result in
higher net interest income over that period if interest rates declined.
 
     At December 31, 1995 and 1994, the Bank's one-year cumulative static gap
was $(60) million and $(145) million, respectively, or negative 3.5 percent and
negative 8.4 percent of total financial assets.
 
     While providing a rough measure of IRR as it relates to expected future
levels of net interest income, gap has a number of drawbacks; including that it
is a static, point-in-time measurement, it does not capture the effects of basis
risk, and it does not capture risk that varies either asymmetrically or
nonproportionately with changes in interest rates. Because of these limitations
and weaknesses, the Bank uses a dynamic simulation model as its primary method
of measuring potential risks to future levels of net interest income. The
simulation model captures not only gap repricing and maturity mismatches, but
also the effects of basis risk, embedded customer and contractual options, and
the effects of prepayments of assets and resulting funds reinvestment risk.
Through selective variation of a number of modeling assumptions and possible
interest rate changes, management is able to more completely assess the sources
and size of potential risk and optimize the Bank's balance sheet size and
structure and/or utilize derivative financial instruments to minimize such
risks.
 
     As compared to the IRR profile of a typical commercial bank, the Bank's IRR
profile is comparatively longer-term in nature. Whereas static gap measures and
net interest income simulation usually focus on potential IRR effects over a
one-year horizon, indicators of the level of IRR inherent in the Bank's current
balance sheet and off-balance sheet contracts over the entire maturity spectrum
can be measured through market value analysis. The Bank maintains a market
valuation model to facilitate such analysis.
 
     The Bank's market valuation model computes the net present value of
discounted future cash flows for each category of the Bank's assets,
liabilities, and derivative financial instruments. In this type of analysis, net
present values of discounted future cash flows are used as a proxy for actual
market values, since factors unrelated to current and projected future levels of
interest rates can have significant effects on actual market values.
 
     The theoretical market value of the Bank's stockholder's equity can be
derived from the net market values of the Bank's assets, liabilities, and
derivative financial instruments. This theoretical market value of stockholder's
equity is known as Net Portfolio Value (NPV) under OTS regulations. By analyzing
the behavior of the Bank's NPV under varying assumptions as to changes in the
general level of interest rates, management is further able to optimize the
Bank's balance sheet mix and devise strategies using derivative financial
instruments and on balance sheet strategies to mitigate potential adverse
effects of interest rate fluctuations on future net interest income levels.
 
     The Bank's Board of Directors' written policy governing management of the
Bank's IRR sets forth maximum allowable levels for changes in the Bank's NPV
under specific assumed changes in the general level of interest rates. Under the
policy, the maximum allowable change in the Bank's NPV for an immediate and
sustained interest rate change of 200 basis points (2.00 percent) is a decline
of 30.0 percent. The Bank's estimates of its Net Portfolio Values were
significantly within this limit for each quarter of 1995 and 1994. The following
table sets forth management's estimates of the Bank's NPV as of December 31,
1995 and 1994, and under simulated 200 basis point changes in interest rates
(thousands of dollars):
 
<TABLE>
<CAPTION>

     CHANGE IN           ESTIMATED NPV       PERCENT CHANGE       ESTIMATED NPV       PERCENT CHANGE
  INTEREST RATES       DECEMBER 31, 1995         IN NPV         DECEMBER 31, 1994         IN NPV
- -------------------    -----------------     --------------     -----------------     --------------
<S>                        <C>                  <C>                  <C>                  <C>
+ 200 basis points         $137,558             (11.08)%             $102,192             (28.55)%
        -0-                $154,702                 --               $143,020                 --
- - 200 basis points         $148,661              (3.90)%             $155,585               8.79%
</TABLE>
 
                                       93
<PAGE>   97
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)

     The financial instruments approved by the Bank's Board of Directors for use
in managing the Bank's IRR include the Bank's debt security portfolio,
borrowings from the FHLB and other sources, interest rate swaps, interest rate
caps, interest rate collars, interest rate futures, and put and call options.
These financial instruments provide effective methods of reducing the impact of
changes in interest rates on the Bank's net interest income and NPV. The Bank
also actively manages its retail and wholesale funding sources to minimize its
cost of funds and provide stable funding sources for its loan and investment
portfolios. Management's use of particular financial instruments is based on a
complete analysis of the Bank's current IRR exposure and the projected effect of
a proposed strategy on the Bank's IRR exposure.
 
     The Bank is exposed to IRR through the issuance of fixed-rate loan
commitments. Fixed-rate loan commitments represent firm commitments to originate
loans secured by real estate to specific borrowers at predetermined interest
rates. Fixed-rate loan commitments generally expire in 30 to 60 days. The Bank
generally receives a fee for these types of commitments. Many of the commitments
are expected to expire without fully being drawn upon; therefore, the total
commitments do not necessarily represent future cash requirements.
 
     The Bank hedges IRR on fixed-rate loan commitments expected to be sold in
the secondary market and the inventory of loans held for sale through a
combination of commitments from permanent investors, optional delivery
commitments, and mandatory forward contracts. Outstanding firm commitments to
sell loans represent agreements to sell loans to a third party at a specified
price on a specified date. These commitments are used to hedge loans for sale
and to hedge outstanding commitments to originate loans. Outstanding master
commitments to sell loans represent agreements to sell a stated volume of loans
to a third party within a specified period of time without regard to price.
Master commitments are entered in order to ensure availability of a buyer for
loans meeting specified underwriting criteria and to maximize the sales price at
the time a firm commitment is executed. Related hedging gains and losses are
recognized at the time gains and losses are recognized on the related loans. See
Note B -- Fair Value of Financial Instruments for commitments outstanding and
their estimated fair values.
 
     At December 31, 1995 and 1994, the Bank had issued and held interest rate
swap agreements as a hedge to convert certain fixed-rate permanent loans into
variable-rate instruments. The interest rate swap agreements require the Bank to
make fixed payments on nonamortizing notional balances, and in turn, the Bank
receives variable interest payments based on the six month LIBOR on these same
balances. If the balances of the loans on the Bank's balance sheet that are
related to the interest rate swap were to decline below the nominal amounts of
the interest rate swaps, the excess portions of the interest rate swaps would be
marked to market, and the resulting gains or losses included in the Bank's
income.
 
     The following table presents the notional amounts of interest rate swaps
outstanding, unrealized gains and losses of the interest rate swaps, the
weighted average interest rates payable and receivable, and the remaining terms
(thousands of dollars):
 
<TABLE>
<CAPTION>

DECEMBER 31, 1995
                     FIXED RATE     VARIABLE RATE      NOTIONAL      UNREALIZED     UNREALIZED
    MATURITY            PAID          RECEIVED          AMOUNT          GAIN           LOSS
- -----------------    ----------     -------------      --------      ----------     ----------
<S>                     <C>              <C>           <C>              <C>         <C>
1 -  3 Years            6.70%            5.94%         $21,400          $--         $  (516)
3 -  5 Years            6.83             5.95           33,650           84          (1,470)
5 - 10 Years            7.00             5.93           43,150           --          (2,963)
                        ----             ----          -------          ---         -------
                        6.87%            5.94%         $98,200          $84         $(4,949)
                        ====             ====          =======          ===         =======
</TABLE>
 
                                       94
<PAGE>   98
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)
 
<TABLE>
<CAPTION>

DECEMBER 31, 1994
                     FIXED RATE     VARIABLE RATE      NOTIONAL     UNREALIZED     UNREALIZED
    MATURITY            PAID          RECEIVED          AMOUNT         GAIN           LOSS
- -----------------    ----------     -------------      --------     ----------     ----------
<S>                  <C>            <C>                <C>            <C>             <C>
1 -  3 Years            6.70%            5.56%         $21,400        $  652           $
3 -  5 Years            7.22             5.66           26,150           833            --
5 - 10 Years            6.88             5.76           24,900         1,506            (5)
                        ----             ----          -------        ------           ---
                        6.95%            5.66%         $72,450        $2,991           $(5)
                        ====             ====          =======        ======           ===
</TABLE>
 
     The notional amounts of interest rate swaps do not represent amounts
exchanged by the parties and, thus, are not a measure of the Bank's exposure
through its use of derivatives. The amounts exchanged are determined by
reference to the notional amounts and the interest rates.
 
     The Bank is exposed to credit-related losses in the event of nonperformance
by counterparties to off-balance sheet financial contracts, but does not expect
any counterparties to fail to meet their obligations. The Bank performs credit
analyses on all counterparties, and its credit exposure at any given time is
limited to the value of off-balance sheet contracts that have become favorable
to the Bank and have unrealized gains on that date. The Bank generally uses only
highly rated Wall Street investment firms as counterparties to its off-balance
sheet financial contacts, but because of the different business emphasis of each
of the firms, adverse economic changes or conditions are not likely to produce
similar adverse changes to the credit risk of all of the Bank's counterparties
to the same extent.
 
     No interest rate swaps matured or were terminated during 1995, 1994 or
1993. The interest rate swap agreements at December 31, 1995 are collateralized
with MBS with a fair value of $6.5 million. The net expense on interest rate
swaps of $624,000, $485,000 and $24,000 in 1995, 1994 and 1993, respectively,
are included in interest expense as a cost of hedging activities in the Bank's
Statements of Operations.
 
  Note O -- Legal Proceedings
  ---------------------------
 
     The Bank has been named as defendant in various legal proceedings. The
ultimate dispositions of these proceedings are not presently determinable;
however, it is the opinion of management, based upon the advice of counsel, it
is unlikely that any litigation to which the Bank or any of its subsidiaries is
subject will have a material adverse impact on the Bank's financial condition or
results of operations.
 
                                       95
<PAGE>   99
 
                   SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 13 -- PRIMERIT BANK (CONTINUED)
 
  Note P -- Quarterly Financial Data (Unaudited)
  ----------------------------------------------
 
<TABLE>
<CAPTION>
                                                        QUARTER ENDED
                                   -------------------------------------------------------
                                   MARCH 31      JUNE 30     SEPTEMBER 30     DECEMBER 31      YEAR ENDED
                                   ---------     -------     ------------     ------------     ----------
                                                           (THOUSANDS OF DOLLARS)
<S>                                <C>           <C>         <C>              <C>              <C>
1995
Interest income..................   $33,211      $32,801       $ 33,394         $ 33,471        $132,877
Interest expense.................    18,429       18,347         18,503           18,021          73,300
Provision for estimated credit
  losses.........................     1,364        2,035          1,604            3,146           8,149
Net income (loss)................     1,678        2,102          2,015           (9,000)         (3,205)

1994
Interest income..................   $28,045      $29,124       $ 29,894         $ 31,371        $118,434
Interest expense.................    14,049       14,200         14,867           16,674          59,790
Provision for estimated credit
  losses.........................     1,434        2,275          1,493            2,028           7,230
Net income.......................     2,189        2,176          1,977            1,331           7,673

1993
Interest income..................   $35,997      $34,976       $ 31,881         $ 29,471        $132,325
Interest expense.................    22,240       20,906         17,267           14,663          75,076
Provision for estimated credit
  losses.........................     1,123        1,180          2,742            1,167           6,212
Net income (loss) before
  cumulative effect..............       609       (4,717)         5,341            2,318           3,551
Cumulative effect of change in
  method of accounting for income
  taxes..........................     3,045           --             --               --           3,045
Net income (loss)................     3,654       (4,717)         5,341            2,318           6,596
</TABLE>
 
                                       96
<PAGE>   100
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To the Shareholders,
  Southwest Gas Corporation:
 
     We have audited the accompanying consolidated balance sheets of Southwest
Gas Corporation (a California corporation, hereinafter referred to as the
Company) and subsidiaries as of December 31, 1995 and 1994, and the related
consolidated statements of income, stockholders' equity and cash flows for each
of the three years in the period ended December 31, 1995. These financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of the Company and its
subsidiaries as of December 31, 1995 and 1994, and the results of their
operations and their cash flows for each of the three years in the period ended
December 31, 1995 in conformity with generally accepted accounting principles.
 
                                          ARTHUR ANDERSEN LLP
 
Las Vegas, Nevada
February 7, 1996
 
                                       97
<PAGE>   101
 
ITEM 9.  DISAGREEMENTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
 
     None.
 
                                    PART III
 
ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 
     (a) Identification of Directors.  The names of the members of the Board of
Directors, the principal occupation of each member and his or her employer for
the last five years or longer, and the principal business of the corporation or
other organization, if any, in which such occupation or employment is carried
on, follow.
 
RALPH C. BATASTINI
Former President, Vice Chairman and Chief Financial Officer
The Dial Corp (Formerly The Greyhound Corporation)
 
Director Since: 1992
Board Committees: Audit (Chairman), Pension Plan Investment
 
     Mr. Batastini, 66, received his undergraduate degree from Illinois State
University and his M.B.A. degree in finance from the University of Chicago. He
joined The Greyhound Corporation in 1957 and retired in 1984 as vice chairman
and chief financial officer. At the time of his retirement Mr. Batastini headed
the Greyhound financial group of companies involved in capital equipment
leasing, computer leasing, reinsurance, money orders, mortgage insurance, and
real estate. He subsequently served as president of Batastini & Co. from 1985 to
1990. He currently is the president of the Barrow Neurological Foundation and
has been a director of PriMerit Bank since 1992.
 
MANUEL J. CORTEZ
President and Chief Executive Officer
Las Vegas Convention and Visitors Authority
 
Director Since: 1991
Board Committees: Nominating and Compensation, Pension Plan Investment
 
     Mr. Cortez, 57, served four terms (1977-1990) on the Clark County
Commission and is a former chairman of the Commission. He has been active on
various boards, including the Environmental Quality Policy Review Board, the Las
Vegas Valley Water District Board of Directors and the University Medical Center
Board of Trustees, and served as chairman of the Liquor and Gaming Licensing
Board and the Clark County Sanitation District. He has also held leadership
roles with numerous civic and charitable organizations such as Boys and Girls
Clubs of Clark County, Lied Discovery Children's Museum, and Boys Town.
Currently, Mr. Cortez holds professional memberships in the American Society of
Association Executives, the Professional Convention Managers Association, the
International Association of Convention and Visitors Bureaus, and the American
Society of Travel Agents. He has been a director of PriMerit Bank since 1991.
 
LLOYD T. DYER
Retired President and Chief Executive Officer
Harrah's
 
Director Since: 1978
Board Committees: Executive, Nominating and Compensation
 
     Mr. Dyer, 68, obtained a degree in banking and finance from the University
of Utah prior to his employment with Harrah's, a hotel/gaming corporation with
its principal facilities in Reno and Lake Tahoe, in 1957. He was elected
president and chief operating officer of Harrah's in 1975, and elected president
and chief executive officer in 1978. He remained in those positions with
Harrah's until his retirement in April 1980.
 
                                       98
<PAGE>   102
 
Mr. Dyer has been a director of PriMerit Bank since 1986. He is also a trustee
of the William F. Harrah Trusts.
 
KENNY C. GUINN
Chairman of the Board
Southwest Gas Corporation and PriMerit Bank
 
Director Since: 1981
Board Committees: Executive (Chairman), Nominating and Compensation
 
     Mr. Guinn, 59, was appointed President and Chief Operating Officer of
Southwest Gas Corporation in 1987, Chairman and Chief Executive Officer in 1988
and was elected Chairman of the Board of Directors in 1993. Mr. Guinn is
actively involved in numerous business, charitable, and civic activities. He is
past chairman of the Las Vegas Metropolitan Police Fiscal Affairs Committee and
past chairman of the Board of Trustees for the University of Nevada, Las Vegas
Foundation. In May 1994 he was appointed Interim President of the University of
Nevada, Las Vegas and served in this capacity for approximately one year. He is
also a director for Oasis Residential, Inc., Boyd Gaming Corporation, and Del
Webb Corporation. Mr. Guinn was elected a director of PriMerit Bank in 1980 and
has served as Chairman of the Board of Directors of PriMerit since 1987.
 
THOMAS Y. HARTLEY
President and Chief Operating Officer
Colbert Golf Design and Development
 
Director Since: 1991
Board Committees: Audit, Nominating and Compensation
 
     Mr. Hartley, 62, obtained his degree in business from Ohio University in
1955, and was employed in various capacities by Deloitte Haskins & Sells from
1959 until his retirement as an area managing partner in 1988. Mr. Hartley is
actively involved in numerous business and civic activities. He is chairman of
the University of Nevada, Las Vegas Foundation and president of the Las Vegas
Founders Club. He has also held executive positions with the Nevada Development
Authority, the Las Vegas Founders Golf Foundation, the Las Vegas Chamber of
Commerce, and the Boulder Dam Area Council of the Boy Scouts of America. He is a
director of Rio Hotel and Casino, Inc., Sierra Health Services, Inc. and has
been a director of PriMerit Bank since 1991.
 
MICHAEL B. JAGER
Private Investor
 
Director Since: 1989
Board Committees: Audit, Pension Plan Investment
 
     Mr. Jager, 64, obtained a degree in petroleum geology from Stanford
University in 1955. After a four-year employment with the Richfield Oil
Corporation as a petroleum geologist, he joined the Frank H. Ayres & Son
Construction Company and was involved in the construction of subdivisions and
homes in southern California until 1979. Since that time he has consulted in the
single family residential development industry, and owns and manages a number of
businesses in Oregon and Nevada. He has been a director of PriMerit Bank since
1989.
 
                                       99
<PAGE>   103
 
LEONARD R. JUDD
Former President, Chief Operating Officer, and Director
Phelps Dodge Corporation
 
Director Since: 1988
Board Committees: Audit, Nominating and Compensation (Chairman)
 
     Mr. Judd, 57, former president, chief operating officer, and director of
Phelps Dodge Corporation, joined Phelps Dodge in 1963 and worked at that
company's operations in Arizona, New Mexico and New York City. He was elected to
the Phelps Dodge board of directors in 1987, became president of Phelps Dodge
Mining Company in 1988 and became president and chief operating officer of
Phelps Dodge in 1989. He remained in those positions until November 1991. Mr.
Judd is a member of various professional organizations and is active in numerous
civic groups. He serves as a director of the Kasler Holding Company, the Montana
College of Mineral Science and Technology Foundation, and has been a director of
PriMerit Bank since 1988.
 
JAMES R. LINCICOME
Retired Executive Vice President and General Manager,
Government Electronics Group, Motorola Corporation
 
Director Since: 1987
Board Committees: Audit, Executive, Nominating and Compensation
 
     Mr. Lincicome, 70, was employed by Motorola in its Communications Division
in 1950. After progressing through positions in that Division, he transferred to
the Government Electronics Group, where from 1979 until his retirement in 1987,
he was General Manager responsible for various national defense, space
exploration and other government related programs. Mr. Lincicome is a member of
various professional organizations and is past Chairman of the Arizona State
University Engineering Advisory Council, Junior Achievement of Central Arizona,
the Phoenix Urban League, United for Arizona, and the Valley of the Sun United
Way. He has held a number of leadership roles in other civic and charitable
organizations in Arizona, including the Research Committee of the Arizona Town
Hall and Board Member of the Goldwater Institute, and was vice chairman of the
Government Division of the Electronic Industries Association in 1986. He has
been a director of PriMerit Bank since 1988.
 
MICHAEL O. MAFFIE
President and Chief Executive Officer
Southwest Gas Corporation
 
Director Since: 1988
Board Committees: Executive
 
     Mr. Maffie, 48, joined the company in 1978 as Treasurer after seven years
with Arthur Andersen & Co. He was named Vice President/Finance and Treasurer in
1982, Senior Vice President and Chief Financial Officer in 1984, Executive Vice
President in 1987, President and Chief Operating Officer in 1988, and President
and Chief Executive Officer in 1993. He has been a director of PriMerit Bank
since 1993. He received his undergraduate degree in accounting and his M.B.A.
degree in finance from the University of Southern California. A member of
various professional organizations, he serves as a board member of the United
Way of Nevada, Nevada School of the Arts, Boys and Girls Clubs of Las Vegas, a
trustee of the Las Vegas Symphony Orchestra, the University of Nevada, Las Vegas
Foundation, and the Nevada Development Authority. He also serves as a
Commissioner on the State of Nevada Commission on Substance Abuse Education,
Prevention, Enforcement and Treatment, and is a former president of the Allied
Arts Council. He is a director of the Pacific Coast Gas Association and a former
director of the American Gas Association.
 
                                       100
<PAGE>   104
 
CAROLYN M. SPARKS
Co-Founder
International Insurance Services, Ltd.
 
Director Since: 1988
Board Committees: Audit, Pension Plan Investment (Chairperson)
 
     Mrs. Sparks, 54, graduated from the University of California at Berkeley in
1963, and with her husband, co-founded International Insurance Services, Ltd.,
in 1966 in Las Vegas. She has served on the University and Community College
System of Nevada Board of Regents since 1984, and in 1991 was elected to a
two-year term as Chairperson of the Board of Regents. Mrs. Sparks is actively
involved with numerous charitable and civic organizations, including founding
chairperson of the University Medical Center Foundation and the Children's
Miracle Network Telethon. She also served on the board for Bishop Gorman High
School and is currently chair of the board for the Las Vegas Center for
Children. She is a director of Showboat, Inc., a hotel/gaming corporation and
has been a director of PriMerit Bank since 1988.
 
ROBERT S. SUNDT
Retired President
Sundt Corp.
 
Director Since: 1987
Board Committees: Executive, Pension Plan Investment
 
     Mr. Sundt, 69, has been associated with Sundt Corp. in a variety of
positions since 1948. He was named President of Sundt Corp. in 1983. He is now
retired and has no continuing association with Sundt Corp. He has been a
director of PriMerit Bank since 1988. He is a member of the American Institute
of Constructors, Consulting Constructors Council of America and a life director
of the Associated General Contractors of America. He is a member of the American
Arbitration Association and serves as an arbitrator on disputes concerning the
construction industry. He is past member of the Construction Industry Presidents
Forum. Mr. Sundt is affiliated with a number of community organizations and is
past chairman of the Tucson Metropolitan Chamber of Commerce.
 
     (b) Identification of Executive Officers.  The name, age, position and
period position held during the last five years for each of the Executive
Officers of the Company are as follows:
 
<TABLE>
<CAPTION>
                                                                                       PERIOD
         NAME            AGE                        POSITION                        POSITION HELD
- -----------------------  ---   ---------------------------------------------------  -------------
<S>                      <C>   <C>                                                  <C>
Michael O. Maffie......  48    President and Chief Executive Officer                1993-Present
                               President and Chief Operating Officer                1991-1993
Dan J. Cheever.........  40    President and Chief Executive Officer/PriMerit Bank  1992-Present
                               President and Chief Operating Officer/PriMerit Bank  1991-1992
George C. Biehl........  48    Senior Vice President and Chief Financial Officer    1991-Present
James F. Lowman........  49    Senior Vice President/Central Arizona Division       1991-Present
Dudley J. Sondeno......  43    Senior Vice President/Staff Operations               1993-Present
                               Vice President/Engineering and Operations Support    1991-1993
L. Keith Stewart.......  55    Senior Vice President/Operations                     1993-Present
                               Senior Vice President/Southern Arizona Division      1992-1993
                               Senior Vice President/Nevada-California Region       1991-1992
Thomas J. Trimble......  64    Senior Vice President, General Counsel and
                               Corporate Secretary                                  1991-Present
</TABLE>
 
     (c) Identification of Certain Significant Employees.
 
     None.
 
     (d) Family Relationships.  None of the Company's Directors or Executive
Officers are related to any other either by blood, marriage or adoption.
 
                                       101
<PAGE>   105
 
     (e) Business Experience.  Information with respect to Directors is
described in (a) above. All Executive Officers have held responsible positions
with the Company for at least five years as described in (b) above.
 
     (f) Involvement in Certain Legal Proceedings.
 
     None.
 
     (g) Item 405 Review.  Section 16(a) of the Securities Exchange Act of 1934
requires the Company's officers and directors, and persons who own more than ten
percent of a registered class of the Company's equity securities, to file
reports of ownership and changes in ownership with the Securities and Exchange
Commission (SEC) and the New York Stock Exchange. Officers, directors and
beneficial owners of more than ten percent of any class of equity securities are
required by SEC regulation to furnish the Company with copies of all Section
16(a) forms they file.
 
     The Company has adopted procedures to assist its directors and executive
officers in complying with Section 16(a) of the Securities and Exchange Act of
1934, which includes assisting in the preparation of forms for filing. For 1995,
all the required reports were filed timely.
 
ITEM 11.  EXECUTIVE COMPENSATION
 
DIRECTORS COMPENSATION
 
     Outside directors receive an annual retainer of $20,000, plus $900 for each
Board or committee meeting attended. Committee chairpersons receive an
additional $500 for each committee meeting attended. The outside directors also
receive an annual retainer of $16,000 and fees for serving on the Board of
Directors of PriMerit Bank. Each director receives a fee of $700 for each Bank
Board or committee meeting attended, and the Bank committee chairpersons also
receive an additional $250 for each committee meeting attended. The Chairman of
the Company's Board, Mr. Guinn, receives an additional $25,000 annually for
serving in that capacity. Directors who are full-time employees of the Company
or its subsidiaries receive no additional compensation for Board service.
 
     Outside directors may defer their compensation until retirement or other
termination of status as a director. Amounts deferred bear interest at 150
percent of the Moody's Seasoned Corporate Rate.
 
     The Company also provides a retirement plan for its outside directors. With
a minimum of ten years of service, an outside director can retire and receive a
benefit equal to the annual retainer, at retirement, for serving on the
Company's Board. Directors who retire before age 65, after satisfying the
minimum service obligation will receive retirement benefits upon reaching age
65.
 
                                       102
<PAGE>   106
 
EXECUTIVE COMPENSATION
 
     The following table provides for fiscal years ended December 31, 1993, 1994
and 1995, compensation earned by the Company's Chief Executive Officer and each
of the four other most highly compensated executive officers of the Company.
 
                         SUMMARY COMPENSATION TABLE(1)
 
<TABLE>
<CAPTION>
                                                                                   LONG-TERM COMPENSATION
                                                                              ---------------------------------
                                                                                      AWARDS
                                                                              -----------------------   PAYOUTS
                                                                               RESTRICTED               -------
                                ANNUAL COMPENSATION                              STOCK                   LTIP        ALL OTHER
        NAME AND           ------------------------------    OTHER ANNUAL       AWARD(S)     OPTIONS/   PAYOUTS   COMPENSATION($)
   PRINCIPAL POSITION      YEAR   SALARY($)   BONUS($)(2)   COMPENSATION($)   ($)(2)(3)(4)   SARS(#)    ($)(5)       (6)(7)(8)
- -------------------------  ----   ---------   -----------   ---------------   ------------   --------   -------   ---------------
<S>                        <C>    <C>         <C>           <C>               <C>            <C>        <C>       <C>
Michael O. Maffie........  1995    408,671      128,270            0             179,246        N/A       N/A          40,481
  President/C.E.O.         1994    370,616       73,149            0              51,098        N/A       N/A          32,898
                           1993    316,904       48,510            0              48,510        N/A       N/A          31,070

Dan J. Cheever...........  1995    255,135       95,000            0                 N/A        N/A       N/A          23,037
  President/C.E.O.         1994    226,770       69,913            0                 N/A        N/A       N/A          12,484
  PriMerit Bank            1993    208,725       75,000            0                 N/A        N/A       N/A           4,497

Thomas J. Trimble........  1995    212,367       40,114            0              60,172        N/A       N/A          48,153
  Senior Vice President/   1994    209,178       20,413            0              20,413        N/A       N/A          39,404
  General Counsel/         1993    206,345       19,219            0              19,219        N/A       N/A          38,223
  Corporate Secretary

George C. Biehl..........  1995    197,326       41,448            0              56,523        N/A       N/A          12,137
  Senior Vice President/   1994    187,068       25,124            0              16,988        N/A       N/A           9,148
  Chief Financial Officer  1993    175,449       16,632            0              16,632        N/A       N/A           8,732

L. Keith Stewart.........  1995    162,142       30,929            0              46,389        N/A       N/A          16,168
  Senior Vice President/   1994    154,712       15,359            0              15,359        N/A       N/A          11,650
  Operations               1993    144,622       13,861            0              13,861        N/A       N/A          11,170
</TABLE>
 
- ---------------
(1) All compensation reflected in the Summary Compensation Table is reported on
    an earned basis for each fiscal year.
 
(2) Bonuses and performance shares accrued for calendar years 1993, 1994 and
    1995 were paid and awarded in 1994, 1995 and 1996, respectively.
 
(3) Dividends equal to the dividends paid on the Company's Common Stock will
    accrue on the performance shares awarded under the long-term component of
    the Company's management incentive plan during the restriction period.
 
(4) Messrs. Maffie, Trimble, Biehl and Stewart were awarded performance shares
    (restricted stock) under the Company's management incentive plan. Mr.
    Cheever does not participate in the Company's management incentive plan. The
    total number of performance shares granted in 1994 and 1995, for calendar
    years 1993 and 1994, and their value based on the market price of Company
    Common Stock at December 29, 1995 for each individual are as follows:
 
<TABLE>
<CAPTION>
                                                              SHARES    VALUE
                                                              ------   --------
        <S>                                                   <C>      <C>
        Mr. Maffie..........................................  6,457    $113,805
        Mr. Trimble.........................................  2,604      45,896
        Mr. Biehl...........................................  2,206      38,881
        Mr. Stewart.........................................  1,922      33,875
</TABLE>
 
(5) If the impending sale of the Bank is consummated, the long-term performance
    awards under the performance periods described below, or $94,959, will be
    paid to Mr. Cheever at least one week prior to closing.
 
(6) For Messrs. Maffie, Trimble, Biehl and Stewart, the amounts shown in this
    column for each year consist of above-market interest on deferred
    compensation and matching contributions under the Company's executive
    deferral plan. Under the plan, executive officers may defer up to 50 percent
    of their annual compensation for payment at retirement or at some other
    employment terminating event. Interest on such deferrals is set at 150
    percent of the Moody's Seasoned Corporate Rate. As part of the plan, the
 
                                       103
<PAGE>   107
 
    Company provides matching contributions that parallel the contributions made
    under the Company's 401(k) plan, which is available to all Company 
    employees, equal to one-half of the deferred amount, up to six percent of 
    their annual salary.
 
(7) For Mr. Cheever, the amounts shown in this column for each year consist of
    matching contributions under the Bank's 401(k) plan, and for 1994 include a
    matching contribution under the Bank's executive deferral plan. Under the
    Bank's executive deferral plan, Mr. Cheever may defer up to 50 percent of
    his annual salary and bonus for payment at retirement or at some other
    employment terminating event. Interest on executive plan deferrals is set at
    150 percent of the Moody's Seasoned Corporate Rate. For 1994 and the first
    two months of 1995, the Bank provided matching contributions equal to the
    amount deferred under each plan, up to six percent of Mr. Cheever's annual
    salary and bonus. For the remainder of 1995, such matching contributions
    were only provided to Mr. Cheever under the provisions of the Bank's
    executive deferral plan.
 
(8) All Other Compensation consists of matching contributions under the
    Company's or PriMerit Bank's deferral plans and interest on such deferrals
    in excess of 120 percent of the Applicable Federal Long-term [bond] Rate.
    The breakdown of such compensation for each named executive officer is as
    follows:
 
<TABLE>
<CAPTION>
                                                            INTEREST     CONTRIBUTIONS
                                                            --------     -------------
            <S>                                             <C>          <C>
            Mr. Maffie....................................  $ 28,239        $12,242
            Mr. Cheever...................................     5,920         17,117
            Mr. Trimble...................................    41,783          6,370
            Mr. Biehl.....................................     6,221          5,916
            Mr. Stewart...................................    11,307          4,861
</TABLE>
 
LONG-TERM INCENTIVE PLAN AWARDS FOR 1995
 
     The following table summarizes the long-term cash incentive awards earned
by Dan Cheever under PriMerit Bank's performance based executive compensation
plan for the three-year performance periods of January 1, 1994 through December
31, 1996 and January 1, 1995 through December 31, 1997. Of the named executive
officers, only Mr. Cheever was eligible to participate in the PriMerit Bank
plan. If the impending sale of the Bank is consummated, the long-term
performance awards under both performance periods will be paid to Mr. Cheever at
least one week prior to closing and the plan will be terminated.
 
                         LONG-TERM INCENTIVE PLAN TABLE
 
<TABLE>
<CAPTION>
                                    NUMBER OF      PERFORMANCE           ESTIMATED FUTURE PAYOUT UNDER
                                     SHARES,        OR OTHER              NON-STOCK PRICE-BASED PLANS
                                      UNITS       PERIOD UNTIL        -----------------------------------
                                    OR OTHER       MATURATION         THRESHOLD      TARGET      MAXIMUM
               NAME                 RIGHTS(#)       OR PAYOUT         ($ OR #)      ($ OR #)     ($ OR #)
- ----------------------------------  ---------     -------------       ---------     --------     --------
<S>                                 <C>           <C>                 <C>           <C>          <C>
Dan Cheever.......................     N/A          1994-1996(1)       $34,007      $ 34,007     $34,007
Dan Cheever.......................     N/A          1995-1997(2)       $37,782      $ 37,782     $37,782
</TABLE>
 
- ---------------
(1) The long-term performance award earned by Mr. Cheever for the first
    performance period represents 30 percent or the second year's percentage of
    such award. Mr. Cheever earned 20 percent, or $23,170, during the first year
    of this performance period. This year's award is not subject to further
    adjustment during the performance period, and if the pending sale of the
    Bank is consummated, the awards earned through the end of 1995 will be paid
    out to Mr. Cheever at least one week prior to closing.
 
(2) The long-term performance award earned by Mr. Cheever for the second
    performance period represents 33 percent or the first year's percentage of
    such award. This year's award is not subject to further adjustment during
    the performance period, and if the pending sale of the Bank is consummated,
    the awards earned through the end of 1995 will be paid out to Mr. Cheever at
    least one week prior to closing.
 
                                       104
<PAGE>   108
 
BENEFIT PLANS
 
     Southwest Gas Basic Retirement Plan.  The named executive officers, except
Mr. Cheever, participate in the Company's non-contributory, defined-benefit
retirement plan, which is available to all employees of the Company and its
subsidiaries (except PriMerit Bank which has a separate plan). Benefits are
based upon an employee's years of service, up to a maximum of 30 years, and the
employee's highest five consecutive years salary within the final 10 years of
service.
 
                     SOUTHWEST GAS PENSION PLAN TABLE(1)(2)
 
<TABLE>
<CAPTION>
                                         YEARS OF SERVICE
      ANNUAL        -----------------------------------------------------------
   COMPENSATION       10           15           20           25           30
- ------------------  -------     --------     --------     --------     --------
<S>                 <C>         <C>          <C>          <C>          <C>
  $ 50,000........  $ 8,750     $ 13,125     $ 17,500     $ 21,875     $ 26,250
   100,000........   17,500       26,250       35,000       43,750       52,500
   150,000........   26,250       39,375       52,500       65,625       78,750
   200,000........   35,000       52,500       70,000       87,500      105,000
   250,000........   43,750       65,625       87,500      109,375      131,250
   300,000........   52,500       78,750      105,000      131,250      157,500
   350,000........   61,250       91,875      122,500      153,125      183,750
   400,000........   70,000      105,000      140,000      175,000      210,000
   450,000........   78,750      118,125      157,500      196,875      236,250
   500,000........   87,500      131,250      175,000      218,750      262,500
</TABLE>
 
- ---------------
(1) Years of service beyond 30 years will not increase benefits under the basic
     retirement plan.
 
(2) For 1996, the maximum annual compensation that can be considered in
     determining benefits under the plan is $150,000. For future years the
     maximum annual compensation will be adjusted to reflect changes in the cost
     of living as established by the Internal Revenue Service.
 
     Compensation covered under the basic retirement plan is based on salary
depicted in the Summary Compensation Table. As of December 31, 1995, the
credited years of service for the named executive officers shown in the Summary
Compensation Table are as follows: Mr. Maffie, 17 years; Mr. Biehl, 10 years;
Mr. Stewart, 11 years; and Mr. Trimble, 9 years.
 
     Amounts shown in the pension plan table are straight-life annuity amounts,
notwithstanding the availability of joint survivorship benefit provisions.
Benefits paid under the basic and supplemental retirement plans are not reduced
by any Social Security benefits received.
 
     Supplemental Retirement Plan.  The named executive officers, except Mr.
Cheever, also participate in the Company's supplemental retirement plan. Such
officers with 10 or more years of service may retire at age 55 or older and will
receive benefits under the plan. Such benefits, when added to benefits received
under the basic retirement plan, will equal 60 percent of their highest 12
months of compensation with the Company. The total benefit may be reduced if an
officer retires prior to age 60, depending upon his age and total years of
service with the Company. The cost to the Company for benefits under the
supplemental retirement plan for any one of the named executive officers cannot
be properly allocated or determined because of the overall plan assumptions and
options available.
 
     PriMerit Bank Retirement Income Plan.  Mr. Cheever, who is a named
executive officer, participates in the Bank's non-contributory, defined-benefit
retirement plan, which was available to all employees of the Bank and its
subsidiaries. Through March 1994, benefits were based upon an employee's years
of service, up to a maximum of 15 years, and the employee's 60 highest paid
consecutive months of employment with the Bank. Commencing April 1, 1994, the
plan was curtailed. Employees hired on or after that date will not be able to
participate in the plan, while existing employees will not be able to increase
benefits under the plan through additional service with the Bank. Salary changes
for existing employees, however, will continue to affect plan benefits. If the
pending sale of the Bank is consummated, the plan will be merged with the
defined-benefit retirement plan of Norwest.
 
                                       105
<PAGE>   109
 
                     PRIMERIT BANK PENSION PLAN TABLE(1)(2)
 
<TABLE>
<CAPTION>
                                                    YEARS OF SERVICE
                   ANNUAL                    ------------------------------      
                COMPENSATION                    5         10          15               
  -----------------------------------------  -------    -------    --------            
  <S>                                        <C>        <C>        <C>                 
   $ 50,000................................  $ 5,833    $11,667    $ 17,500            
    100,000................................   11,667     23,333      35,000            
    150,000................................   17,500     35,000      52,500            
    200,000................................   23,333     46,667      70,000            
    250,000................................   29,167     58,333      87,500            
    300,000................................   35,000     70,000     105,000            
</TABLE>
 
- ---------------
(1) Prior to March 31, 1994, years of service beyond 15 years would not increase
     benefits under the plan. With the curtailment of the plan, additional years
     of service will no longer increase benefits under the plan.
 
(2) For 1996, the maximum annual compensation that can be considered in
    determining benefits under the Plan is $150,000. For future years, the
    maximum annual compensation will be adjusted to reflect changes in the cost
    of living as established by the Internal Revenue Service.
 
     Compensation covered under the Bank's retirement plan is based on salary
depicted in the Summary Compensation Table. At the time the plan was curtailed,
Mr. Cheever had five years of service with the Bank. Only future salary changes
will affect Mr. Cheever's benefits under the plan.
 
     Amounts shown in the pension plan table are straight life annuity amounts
notwithstanding the availability of joint survivorship benefit provisions.
Benefits paid under the Bank's retirement and supplemental retirement plans are
not reduced by any Social Security benefits.
 
     PriMerit Bank Supplemental Executive Retirement Plan.  Mr. Cheever also
participates in the Bank's supplemental retirement plan. Participation in the
supplemental plan is limited to officers of the Bank selected by the Bank's
Board of Directors. Benefits under the plan, when added to benefits received
under the defined benefit retirement plan, will equal 60 percent of the
participant's average annual salary over the 60 highest paid consecutive months
of service. The total benefit will be reduced if a participant retires prior to
age 65, and with less than 15 years of service with the Bank. The cost to the
Bank for benefits under the supplemental retirement plan for Mr. Cheever cannot
be properly determined because of the overall plan assumptions and options
available. If the pending sale of the Bank is consummated, the plan will be
terminated and Mr. Cheever's accrued benefit, estimated to be $75,000, would be
paid prior to closing.
 
CHANGE IN CONTROL ARRANGEMENT
 
     PriMerit Bank, during 1994, entered into an agreement with Mr. Cheever that
is designed to support his continued employment with the Bank. Under the terms
of the agreement, Mr. Cheever would be entitled to a lump sum benefit payment of
$500,000 if he is employed by the Bank at the time of a change in control of the
Bank. Such payment would become due and payable only after the occurrence of a
change in control. The agreement also provides that Mr. Cheever would be
entitled to a lump sum deferred compensation benefit equal to 200 percent of his
annual salary if his employment with the Bank is terminated (or his
responsibilities are substantially changed without his consent) within 12
calendar months of a change in control for other than cause, death, disability,
or retirement. The one-year agreement was extended through May 1996.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
     The Directors who served on the Company's Nominating and Compensation
Committee during 1995 were Leonard R. Judd (Chairman), Manuel J. Cortez, Lloyd
T. Dyer, Kenny C. Guinn, Thomas Y. Hartley, and James R. Lincicome. Mr. Guinn
retired as Chairman and Chief Executive Officer of the Company on May 12, 1993,
and retired as a full-time employee of the Company on August 31, 1993. Mr. Guinn
became a member of the Committee after his retirement as an officer of the
Company.
 
                                       106
<PAGE>   110
 
ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
     (a) Not applicable.
 
     (b) The following table discloses all common stock of the Company
beneficially owned by the directors and executive officers of the Company as of
March 1, 1996.
 
<TABLE>
<CAPTION>
                                                        NO. OF SHARES
                                                        BENEFICIALLY 
                 DIRECTOR/EXECUTIVE OFFICER              OWNED(1)(2)
        ------------------------------------------      -------------
        <S>                                                <C>  
        Ralph C. Batastini........................          5,838
        Manuel J. Cortez..........................          1,731
        Lloyd T. Dyer.............................          4,141
        Kenny C. Guinn............................         54,332
        Thomas Y. Hartley.........................          7,687
        Michael B. Jager..........................          4,861(3)
        Leonard R. Judd...........................          2,000
        James R. Lincicome........................          2,000
        Michael O. Maffie.........................         33,957(4)
        Carolyn M. Sparks.........................          2,343
        Robert S. Sundt...........................          5,000
        George C. Biehl...........................         14,613(4)
        Dan J. Cheever............................          3,434
        L. Keith Stewart..........................          7,430
        Thomas J. Trimble.........................         11,091(4)
        Other Executive Officers..................         23,108
</TABLE>
 
- ---------------
(1) As of March 1, 1996, the directors and executive officers of the Company
    beneficially owned 183,566 shares, which represents less than 1 percent of
    the outstanding shares of the Company's Common Stock. No investor owned more
    than 5 percent of the outstanding voting stock of the Company as of March 1,
    1996.
 
(2) The Common Stock holdings listed in this column include performance shares
    granted to the Company's executive officers under the Company's Management
    Incentive Plan for 1993, 1994, and 1995.
 
(3) Number of shares includes 3,000 shares held in trust for Margaret Jager,
    over which Mr. Jager has no control.
 
(4) Number of shares does not include 6,618 shares held by the Southwest Gas
    Corporation Foundation, which is a charitable trust. Messrs. Maffie,
    Trimble, and Biehl are trustees of the Foundation but disclaim beneficial
    ownership of said shares.
 
     (c) Not applicable.
 
ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     During 1995, some directors and executive officers of the Company were
depositors of, and had transactions with, PriMerit Bank. These transactions were
on the same terms (including interest rates, repayment terms, and collateral) as
those prevailing at the time for comparable transactions with other persons of
similar credit-worthiness and, in the opinion of the Board of Directors of the
Bank, do not involve more than a normal risk of collectibility or other
unfavorable characteristics.
 
                                       107
<PAGE>   111
 
                                    PART IV
 
ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
 
     (a) The following documents are filed as part of this report on Form 10-K:
 
          (1) The following are included in Part II, Item 8 of this Form:
 
<TABLE>
<CAPTION>
                                                                    PAGE        
                                                                    ----        
    <S>                                                             <C>         
    Consolidated balance sheets...................................   50         
    Consolidated statements of income.............................   51         
    Consolidated statements of cash flows.........................   52         
    Consolidated statements of stockholders' equity...............   53         
    Notes to consolidated financial statements....................   54         
    Report of independent public accountants......................   97         
</TABLE>
 
          (2) All schedules have been omitted because the required information
     is either inapplicable or included in the Notes to Consolidated Financial
     Statements.
 
          (3) See list of exhibits.
 
     (b) Reports on Form 8-K
 
          The Company filed a Form 8-K, dated November 13, 1995, reporting on
     the proposed acquisition of Northern Pipeline Construction Co.
 
          The Company filed a Form 8-K, dated January 8, 1996, reporting on the
     agreement to sell PriMerit Bank, a wholly owned subsidiary, to Norwest
     Corporation.
 
          The Company filed a Form 8-K, dated February 14, 1996, reporting
     summary financial information for the year ended December 31, 1995.
 
          The Company filed a Form 8-K, dated March 5, 1996, disclosing the
     adoption of a Rights Agreement.
 
     (c) See Exhibits.
 
                                       108
<PAGE>   112
 
                                LIST OF EXHIBITS
 
<TABLE>
<CAPTION>
EXHIBIT
 NUMBER                                  DESCRIPTION OF DOCUMENT
- --------     --------------------------------------------------------------------------------
<C>          <S>
 2.01(18)    Agreement between Southwest Gas Corporation and The Southwest Companies as
             sellers and Norwest Corporation as buyer, dated January 8, 1996, regarding sale
             of stock or assets of PriMerit Bank.
 3.01(2)     Restated Articles of Incorporation, as amended.
 3.02(11)    Amended Bylaws of Southwest Gas Corporation.
 4.01(3)     Indenture between the Company and Bank of America National Trust and Savings
             Association, as successor by merger to Security Pacific National Bank, as
             Trustee, dated August 1, 1986, with respect to the Company's 9% Series A and
             Series B and 8 3/4% Series C Debentures.
 4.02(4)     First Supplemental Indenture of the Company to Bank of America National Trust
             and Savings Association, as successor by merger to Security Pacific National
             Bank, as Trustee, dated as of October 1, 1986, supplementing and amending the
             Indenture dated as of August 1, 1986, with respect to the Company's 9%
             Debentures, Series A, due 2011.
 4.03(4)     Second Supplemental Indenture of the Company to Bank of America National Trust
             and Savings Association, as successor by merger to Security Pacific National
             Bank, as Trustee, dated as of November 1, 1986, supplementing and amending the
             Indenture dated as of August 1, 1986, with respect to the Company's 9%
             Debentures, Series B, due 2011.
 4.04(5)     Third Supplemental Indenture of the Company to Bank of America National Trust
             and Savings Association, as successor by merger to Security Pacific National
             Bank, as Trustee, dated as of December 1, 1986, supplementing and amending the
             Indenture dated as of August 1, 1986, with respect to the Company's 8 3/4%
             Debentures, Series C, due 2011.
 4.05(5)     Fourth Supplemental Indenture of the Company to Bank of America National Trust
             and Savings Association, as successor by merger to Security Pacific National
             Bank, as Trustee, dated as of February 1, 1987, supplementing and amending the
             Indenture dated as of August 1, 1986, with respect to the Company's 10%
             Debentures, Series D, due 2017.
 4.06(6)     Fifth Supplemental Indenture of the Company to Bank of America National Trust
             and Savings Association, as successor by merger to Security Pacific National
             Bank, as Trustee, dated as of August 1, 1988, supplementing and amending the
             Indenture dated as of August 1, 1986, with respect to the Company's 9 3/8%
             Debentures, Series E, due 2013.
 4.07(7)     Sixth Supplemental Indenture of the Company to Bank of America National Trust
             and Savings Association, as successor by merger to Security Pacific National
             Bank, as Trustee, dated as of June 16, 1992, supplementing and amending the
             Indenture dated as of August 1, 1986, with respect to the Company's 9 3/4%
             Debentures, Series F, due 2002.
 4.08(8)     Indenture between Clark County, Nevada, and Bank of America Nevada as Trustee,
             dated September 1, 1992, with respect to the issuance of $130,000,000 Industrial
             Development Revenue Bonds (Southwest Gas Corporation), $30,000,000 1992 Series A
             and $100,000,000 1992 Series B.
 4.09(10)    Indenture between Clark County, Nevada, and Harris Trust and Savings Bank as
             Trustee, dated December 1, 1993, with respect to the issuance of $75,000,000
             Industrial Development Revenue Bonds (Southwest Gas Corporation), 1993 Series A,
             due 2033.
 4.10(10)    Indenture between City of Big Bear Lake, California, and Harris Trust and
             Savings Bank as Trustee, dated December 1, 1993, with respect to the issuance of
             $50,000,000 Industrial Development Revenue Bonds (Southwest Gas Corporation
             Project), 1993 Series A, due 2028.
 4.11(14)    Certificate of Trust of Southwest Gas Capital I.
 4.12(16)    Amended and Restated Declaration of Trust of Southwest Gas Capital I.
 4.13(16)    Form of Preferred Security (attached as Annex I to Exhibit A to the Amended and
             Restated Declaration of Trust of Southwest Gas Capital I included as Exhibit
             4.12 hereto).
 4.14(15)    Form of Guarantee with respect to Preferred Securities.
 4.15(17)    Southwest Gas Capital I Preferred Securities Guarantee by the Company and Harris
             Trust and Savings Bank, dated as of October 31, 1995.
</TABLE>
 
                                       109
<PAGE>   113
 
<TABLE>
<CAPTION>
EXHIBIT
 NUMBER                                  DESCRIPTION OF DOCUMENT
- --------     --------------------------------------------------------------------------------
<C>          <S>
 4.16(17)    Form of Subordinated Debt Security (included in the First Supplemental Indenture
             included as Exhibit 4.18 hereto).
 4.17(17)    Subordinated Debt Securities Indenture between the Company and Harris Trust and
             Savings Bank, dated as of October 31, 1995.
 4.18(17)    First Supplemental Indenture between the Company and Harris Trust and Savings
             Bank, dated as of October 31, 1995, supplementing and amending the Indenture
             dated as of October 31, 1995, with respect to the 9.125% Subordinated Debt
             Securities.
 4.19(12)    Form of Deposit Agreement.
 4.20(12)    Form of Depositary Receipt (attached as Exhibit A to Deposit Agreement included
             as Exhibit 4.11 hereto).
 4.21(12)    Form of Indenture relating to the Senior Debt Securities.
 4.22(19)    Rights Agreement between the Company and Harris Trust Company, as Rights Agent,
             dated as of March 5, 1996.
 4.23        The Company hereby agrees to furnish to the SEC, upon request, a copy of any
             instruments defining the rights of holders of long-term debt issued by Southwest
             Gas Corporation or its subsidiaries.
 9.01        Not applicable.
10.01(1)     Participation Agreement among the Company and General Electric Credit
             Corporation, Prudential Insurance Company of America, Aetna Life Insurance
             Company, Merrill Lynch Interfunding, Bank of America through purchase of Valley
             Bank of Nevada, Bankers Trust Company and First Interstate Bank of Nevada, dated
             as of July 1, 1982.
10.02(1)     Lease and Agreement between the Company and Spring Mountain Road Associates,
             dated as of June 15, 1982 and amended as of July 1, 1982.
10.03(10)    Financing Agreement between the Company and Clark County, Nevada, dated
             September 1, 1992.
10.04(10)    Financing Agreement between the Company and Clark County, Nevada, dated as of
             December 1, 1993.
10.05(10)    Project Agreement between the Company and City of Big Bear Lake, California,
             dated as of December 1, 1993.
10.06(11)    Southwest Gas Corporation Executive Deferral Plan, amended and restated May 10,
             1994.
10.07(9)     Southwest Gas Corporation Directors Deferral Plan, as amended October 29, 1992.
10.08(10)    Southwest Gas Corporation Board of Directors Retirement Plan, amended and
             restated effective October 1, 1993.
10.09(11)    Southwest Gas Corporation Management Incentive Plan, amended and restated May
             10, 1994.
10.10(11)    Southwest Gas Corporation Supplemental Retirement Plan, amended and restated as
             of May 10, 1994.
10.11(13)    Management Contract with PriMerit Bank officer.
10.12(13)    $200 million Credit Agreement between the Company, Union Bank of Switzerland, et
             al., dated as of January 27, 1995.
10.13        Merger Agreement among the Company and Northern Pipeline Construction Co., dated
             as of November 13, 1995.
11.01        Not applicable.
12.01        Not applicable.
13.01        Not applicable.
16.01        Not applicable.
18.01        Not applicable.
21.01        List of subsidiaries of Southwest Gas Corporation.
22.01        Not applicable.
</TABLE>
 
                                       110
<PAGE>   114
 
<TABLE>
<CAPTION>
EXHIBIT
 NUMBER                                  DESCRIPTION OF DOCUMENT
- --------     --------------------------------------------------------------------------------
<C>          <S>
23.01        Consent of Arthur Andersen LLP, Independent Public Accountants.
24.01        Not applicable.
27.01        Financial Data Schedule (filed electronically only).
28.01        Not applicable.
</TABLE>
 
- ---------------
 (1) Incorporated herein by reference to the Company's report on Form 10-K for
     the year ended December 31, 1982.
 
 (2) Incorporated herein by reference to the Company's Registration Statement on
     Form S-2, No. 2-92938.
 
 (3) Incorporated herein by reference to the Company's Registration Statement on
     Form S-3, No. 33-7931.
 
 (4) Incorporated herein by reference to the Company's report on Form 10-K for
     the year ended December 31, 1986.
 
 (5) Incorporated herein by reference to the Company's report on Form 10-Q for
     the quarter ended March 31, 1987.
 
 (6) Incorporated herein by reference to the Company's report on Form 8-K dated
     August 23, 1988.
 
 (7) Incorporated herein by reference to the Company's report on Form 10-Q for
     the quarter ended June 30, 1992.
 
 (8) Incorporated herein by reference to the Company's report on Form 10-Q for
     the quarter ended September 30, 1992.
 
 (9) Incorporated herein by reference to the Company's report on Form 10-K for
     the year ended December 31, 1992.
 
(10) Incorporated herein by reference to the Company's report on Form 10-K for
     the year ended December 31, 1993.
 
(11) Incorporated herein by reference to the Company's report on Form 10-Q for
     the quarter ended June 30, 1994.
 
(12) Incorporated herein by reference to the Company's Registration Statement on
     Form S-3, No. 33-55621.
 
(13) Incorporated herein by reference to the Company's report on Form 10-K for
     the year ended December 31, 1994.
 
(14) Incorporated herein by reference to the Company's Registration Statement on
     Form S-3, No. 33-62143.
 
(15) Incorporated herein by reference to the Company's Amendment No. 1 to
     Registration Statement on Form S-3, No. 33-62143.
 
(16) Incorporated herein by reference to the Company's report on Form 8-K dated
     October 26, 1995.
 
(17) Incorporated herein by reference to the Company's report on Form 10-Q for
     the quarter ended September 30, 1995.
 
(18) Incorporated herein by reference to the Company's report on Form 8-K dated
     January 8, 1996.
 
(19) Incorporated herein by reference to the Company's report on Form 8-K dated
     March 5, 1996.
 
                                       111
<PAGE>   115
 
                                   SIGNATURES
 
     Pursuant to the requirements of Section 15(d) 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.
 
                                          SOUTHWEST GAS CORPORATION
 
                                          By          MICHAEL O. MAFFIE
                                            ------------------------------------
                                                Michael O. Maffie, President
                                                 (Chief Executive Officer)
 
Date: March 26, 1996
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.
 
<TABLE>
<CAPTION>

               SIGNATURE                               TITLE                    DATE
- ----------------------------------------    ---------------------------    ---------------
<S>                                         <C>                            <C>

            GEORGE C. BIEHL                    Senior Vice President       March 26, 1996
- ----------------------------------------     (Chief Financial Officer)
           (George C. Biehl)


            EDWARD A. JANOV                         Controller             March 26, 1996
- ----------------------------------------    (Chief Accounting Officer)
           (Edward A. Janov)
</TABLE>
 
                                       112
<PAGE>   116
 
                                   SIGNATURES
 
     Pursuant to the requirements of Section 15(d) of the Securities Exchange
Act of 1934, the Company has duly caused this report to be signed below by the
following persons on behalf of the registrant and in the capacities and on the
dates indicated.
 
<TABLE>
<CAPTION>

               SIGNATURE                              TITLE                    DATE
- ----------------------------------------    --------------------------    ---------------
<S>                                         <C>                           <C>

           RALPH C. BATASTINI                        Director              March 26, 1996
- ----------------------------------------
          (Ralph C. Batastini)


            MANUEL J. CORTEZ                         Director              March 26, 1996
- ----------------------------------------
           (Manuel J. Cortez)


             LLOYD T. DYER                           Director              March 26, 1996
- ----------------------------------------
            (Lloyd T. Dyer)


             KENNY C. GUINN                  Chairman of the Board of
- ----------------------------------------            Directors              March 26, 1996
            (Kenny C. Guinn)


           THOMAS Y. HARTLEY                         Director              March 26, 1996
- ----------------------------------------
          (Thomas Y. Hartley)


            MICHAEL B. JAGER                         Director              March 26, 1996
- ----------------------------------------
           (Michael B. Jager)


            LEONARD R. JUDD                          Director              March 26, 1996
- ----------------------------------------
           (Leonard R. Judd)


           JAMES R. LINCICOME                        Director              March 26, 1996
- ----------------------------------------
          (James R. Lincicome)


           MICHAEL O. MAFFIE                  President and Director
- ----------------------------------------    (Chief Executive Officer)      March 26, 1996
          (Michael O. Maffie)


           CAROLYN M. SPARKS                         Director              March 26, 1996
- ----------------------------------------
          (Carolyn M. Sparks)


            ROBERT S. SUNDT                          Director              March 26, 1996
- ----------------------------------------
           (Robert S. Sundt)
</TABLE>
 
                                       113
<PAGE>   117
 
                               GLOSSARY OF TERMS
 
<TABLE>
<S>                <C>
401k               -- The Employees' Investment Plan
ACC                -- Arizona Corporation Commission
AFS                -- Available-For-Sale
AFUDC              -- Allowance for Funds Used During Construction
ARM                -- Adjustable-Rate Mortgages
the Bank           -- PriMerit Bank
the Board          -- Southwest Gas Corporation Board of Directors
CAMEL              -- Capital, Assets, Management, Earnings and Liquidity
CMO                -- Collateralized Mortgage Obligations
the Company        -- Southwest Gas Corporation
CPUC               -- California Public Utilities Commission
CRA                -- Community Reinvestment Act of 1977
El Paso            -- El Paso Natural Gas Company
FASB               -- Financial Accounting Standards Board
FDIC               -- Federal Deposit Insurance Corporation
FDICIA             -- Federal Deposit Insurance Corporation Improvement Act of 1991
FERC               -- Federal Energy Regulatory Commission
FHA                -- Federal Housing Authority
FHLB               -- Federal Home Loan Bank
FHLMC              -- Federal Home Loan Mortgage Corporation
FIRREA             -- Financial Institutions Reform, Recovery and Enforcement Act
flex repos         -- Flexible Reverse Repurchase Agreements
FNMA               -- Federal National Mortgage Association
GAAP               -- Generally Accepted Accounting Principles
Gas Segment        -- Natural Gas Operations Segment
GNMA               -- Government National Mortgage Association
IDRB               -- Industrial Development Revenue Bonds
IRR                -- Interest Rate Risk
ITC                -- Investment Tax Credit
Kern River         -- Kern River Gas Transmission Company
LDC                -- Local Distribution Company
LIBOR              -- London Interbank Offering Rate
LNG                -- Liquefied Natural Gas
MBS                -- Mortgage-Backed Securities
MD&A               -- Management's Discussion and Analysis
MMDA               -- Money Market Demand Account
NOW                -- Negotiable Order of Withdrawal
NPL                -- Northern Pipeline Construction Co.
NPV                -- Net Portfolio Value
OTS                -- Office of Thrift Supervision
Paiute             -- Paiute Pipeline Company
Pataya             -- Pataya Gas Storage Project
PBOP               -- Postretirement Benefits Other Than Pensions
PGA                -- Purchased Gas Adjustment
PSCN               -- Public Service Commission of Nevada
REMIC              -- Real Estate Mortgage Investment Conduits
REO-F              -- Real Estate Acquired Through Foreclosure
SAIF               -- Savings Association Insurance Fund
SAM                -- Supply Adjustment Mechanism
SEC                -- Securities and Exchange Commission
SFAS               -- Statement of Financial Accounting Standards
SFR                -- Single-Family Residential
SoCal              -- Southern California Gas Company
VA                 -- Veterans Administration
</TABLE>
 
                                       114
<PAGE>   118
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER     DESCRIPTION OF DOCUMENT
  -------    -----------------------
  <C>        <S>
   10.13     Merger Agreement among the Company and Northern Pipeline Construction Co., dated
             as of November 13, 1995.
   21.01     List of Subsidiaries of Southwest Gas Corporation.
   23.01     Consent of Arthur Andersen LLP, Independent Public Accountants.
   27.01     Financial Data Schedule (filed electronically only).
</TABLE>

<PAGE>   1
                                                                EXHIBIT 10.13

                                MERGER AGREEMENT

                                      AMONG

                           SOUTHWEST GAS CORPORATION,

                      SOUTHWEST GAS CORPORATION OF ARIZONA

                                       AND

                       NORTHERN PIPELINE CONSTRUCTION CO.

                              NOEL T. COON, ET UX.

                           WILLIAM L. JOHNSON, ET UX.

                            MICHAEL J. KEMPER, ET UX.

                                   DATED AS OF

                                November 13, 1995


<PAGE>   2
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                            Page
                                                                                            ----
                                                                                     
<S>                                                                                          <C>
         Recitals..........................................................................    1
                                                                                     
 1.      Plan of Merger....................................................................    1
         1.1      The Merger...............................................................    1
         1.2      Effect of the Merger.....................................................    2
         1.3      Consummation of the Merger...............................................    2
         1.4      Articles of Incorporation and Bylaws; Directors and Officers.............    2
         1.5      Conversion of Securities.................................................    3
         1.6      Closing of NPL Transfer Books............................................    4
         1.7      Exchange of Certificates.................................................    4
         1.8      Taking of Necessary Action; Further Action...............................    5
         1.9      Fair Market Value........................................................    5
                                                                                     
 2.      Effective Time; Closing...........................................................    7
                                                                                     
 3.      Representations and Warranties of NPL.............................................    7
         3.1      Organization, Power, Good Standing, Etc..................................    7
         3.2      Capitalization...........................................................    9
         3.3      Authority................................................................   10
         3.4      No Violation.............................................................   11
         3.5      Consents and Approvals...................................................   11
         3.6      Financial Statements.....................................................   12
         3.7      Brokerage................................................................   13
         3.8      Absence of Certain Changes or Events.....................................   13
         3.9      Litigation, Etc..........................................................   14
         3.10     Taxes and Tax Returns....................................................   14
         3.11     Employees; Employee Benefit Plans........................................   15
         3.12     Compliance With Applicable Law...........................................   21
         3.13     Contracts and Agreements.................................................   21
         3.14     Disclosure...............................................................   21
         3.15     Title to Property........................................................   22
         3.16     Insurance................................................................   23
         3.17     Powers of Attorney.......................................................   24
                                                                                     
 4.      Representations and Warranties of Southwest.......................................   24
         4.1      Corporate Organization...................................................   24
         4.2      Authority................................................................   24
         4.3      No Violation.............................................................   25
</TABLE>

                                        i


<PAGE>   3



<TABLE>
<S>                                                                                                             <C>
         4.4      Consents and Approvals....................................................................     26
         4.5      Sufficient Resources......................................................................     26
         4.6      Litigation................................................................................     27
         4.7      Capitalization............................................................................     28
         4.8      SEC Filings...............................................................................     28
         4.9      Business Changes..........................................................................     29
         4.10     Financial Statements......................................................................     29
         4.11     Disclosure................................................................................     30

 5.      Covenants of the Parties...........................................................................     31
         5.1      Current Information.......................................................................     31
         5.2      NPL Reports...............................................................................     32
         5.3      Regulatory Matters........................................................................     32
         5.4      Further Assurances........................................................................     33
         5.5      Public Announcements......................................................................     33
         5.6      Failure to Fulfill Conditions.............................................................     34
         5.7      Tax Matters...............................................................................     34

 6.      Covenants of NPL...................................................................................     36
         6.1      Conduct of the Business of NPL............................................................     36
         6.2      No Solicitation...........................................................................     40
         6.3      Access to Management, Properties and Records; Confidentiality.............................     40
         6.4      Assignment of Contract Rights.............................................................     42

 7.      Employees; Employee Benefit Plans..................................................................     42
         7.1      Covenants of NPL..........................................................................     42

 8.      Closing Conditions.................................................................................     43
         8.1      Conditions to Each Party's Obligations Under This Agreement...............................     43
         8.2      Conditions to the Obligations of Southwest Under This Agreement...........................     43
         8.3      Conditions to the Obligations of NPL Under This Agreement.................................     45

 9.      Closing............................................................................................     46
         9.1      Date and Place............................................................................     46
         9.2      NPL's Closing Documents...................................................................     47
         9.3      Southwest's Closing Documents.............................................................     47

10.      Post-Closing Obligations...........................................................................     47
         10.1     Registration of Southwest Common Stock....................................................     47
         10.2     Restrictions on Sale of Acquired Stock....................................................     54

11.      Termination, Amendment and Waiver..................................................................     56
         11.1     Termination...............................................................................     56
</TABLE>

                                       ii


<PAGE>   4



<TABLE>
<S>                                                                                                             <C>
         11.2     Amendment, Extension and Waiver...........................................................     58

12.      Expenses...........................................................................................     58

13.      Indemnification....................................................................................     59
         13.1     Indemnification of Southwest..............................................................     59
         13.2     Southwest Indemnification.................................................................     60
         13.3     Claims for Indemnity......................................................................     61

14.      Miscellaneous......................................................................................     63
         14.1     Non-Compete Agreements....................................................................     63
         14.2     NPL Promissory Notes to Noel T. Coon......................................................     64
         14.3     Survival..................................................................................     64
         14.4     Notices...................................................................................     64
         14.5     Parties in Interest.......................................................................     65
         14.6     Entire Agreement..........................................................................     66
         14.7     Counterparts..............................................................................     66
         14.8     Governing Law.............................................................................     66
         14.9     Headings..................................................................................     66
         14.10    Enforcement Costs.........................................................................     66
</TABLE>


                                       iii


<PAGE>   5
                                MERGER AGREEMENT

         This Merger Agreement (the "Agreement") is made and entered into as of
the 13th day of November, 1995 by and among Southwest Gas Corporation, a
California corporation ("Southwest"), Southwest Gas Corporation of Arizona, a
Nevada Corporation wholly owned by Southwest (the "Merger Sub"), and Northern
Pipeline Construction Co., a Minnesota corporation ("NPL"), and Noel T. Coon and
Alexa S. Higashi, his wife, William L. Johnson and Judy Johnson, his wife, and
Michael J. Kemper and Frances Kemper, his wife ("NPL Shareholders").

                                    RECITALS

         The respective boards of directors of Southwest and NPL have determined
that it is advisable to consummate the Merger described in Section 1 (the
"Merger"), as a result of which all of the outstanding NPL common stock will be
converted into shares of the Common Stock, $1.00 par value per share, of
Southwest ("Southwest Common Stock") and NPL will be owned directly or
indirectly by Southwest; all on the terms and subject to the conditions set
forth in this Agreement.

         NOW, THEREFORE, the parties agree as follows:

         1. Plan of Merger. The respective boards of directors of Southwest,
Merger Sub and NPL have approved or will approve, by resolutions duly adopted,
the following provisions of this Section 1 as the Plan of Merger required by the
laws of the states of Minnesota and Nevada in connection with the Merger:

                  1.1 The Merger. At the Effective Time (as defined in Section
1.3), in accordance with this Agreement and applicable law, NPL shall be merged
with and into


<PAGE>   6



the Merger Sub, the separate existence of NPL (except as may be continued by
operation of law) shall cease, and the Merger Sub shall continue as the
surviving corporation under the corporate name possessed by NPL immediately
prior to the Effective Time, subject to Section 1.4 of this Agreement. The
Merger Sub, in its capacity as the corporation surviving the Merger, sometimes
is referred to herein as the "Surviving Corporation."

                  1.2 Effect of the Merger. The Surviving Corporation shall
possess all the rights, privileges, immunities and franchises, of a public as
well as of a private nature, of each of the Merger Sub and NPL (collectively,
the "Constituent Corporations"); and all property, real, personal, and mixed,
and all debts due on whatever account, including subscriptions to shares, and
all other choses in action, and all and every other interest of or belonging to
or due to each of the Constituent Corporations, shall be taken and deemed to be
transferred to and vested in the Surviving Corporation without further act or
deed; and the Surviving Corporation shall be responsible and liable for all
liabilities and obligations of each of the Constituent Corporations.

                  1.3 Consummation of the Merger. On the Closing Date, the
parties hereto will cause articles of merger relating to the Merger to be
delivered to the Secretary of State of the states of Minnesota and Nevada, in
such form as required by, and executed in accordance with, the relevant
provisions of applicable law. The Merger shall be effective at such time as such
articles of merger are duly filed by the Secretary of State of the states of
Minnesota and Nevada in accordance with the applicable law (the "Effective
Time").

                  1.4 Articles of Incorporation and Bylaws; Directors and
Officers. The Articles of Incorporation and Bylaws of the Merger Sub, as in
effect immediately prior to 

                                        2


<PAGE>   7



the Effective Time, shall be the Articles of Incorporation (except that such
Articles of Incorporation shall be amended as of the Effective Time to change
the name to NPL) and Bylaws (except that such Bylaws shall be amended as of the
Effective Time to change the name to NPL) of the Surviving Corporation
immediately after the Effective Time and shall thereafter continue to be its
Articles of Incorporation and Bylaws until amended as provided therein and under
the applicable law. The directors of the Merger Sub holding office immediately
prior to the Effective Time shall be the directors of the Surviving Corporation
immediately after the Effective Time. The officers of the Merger Sub holding
office immediately prior to the Effective Time shall sign letters of resignation
on or prior to the Closing. The officers of NPL (except Noel T. Coon) holding
office immediately prior to the Effective Time shall be the officers (holding
the same offices as they held with NPL) of the Surviving Corporation immediately
after the Effective Time.

                  1.5 Conversion of Securities. At the Effective Time, by virtue
of the Merger and without any action on the part of the Merger Sub, NPL or the
holder of any of the following securities:

                  (a) All shares of NPL Common Stock issued and outstanding
         immediately prior to the Effective Time (other than shares to be
         canceled pursuant to Section 1.5[b]) shall automatically be canceled
         and extinguished and be converted into and become a right to receive
         the number of shares of Southwest Common Stock to be calculated in
         accordance with Section 1.9 having a total Fair Market Value of
         Southwest Common Stock equal to twenty-four million dollars
         ($24,000,000). Each NPL Shareholder shall be entitled to receive his
         proportionate share of such

                                        3


<PAGE>   8



         Southwest Common Stock based upon his percentage ownership interest of
         NPL Common Stock at the Effective Time. Cash will be issued in lieu of
         fractional shares based on Fair Market Value.

                  (b) Each share of NPL Common Stock issued and outstanding
         immediately prior to the Effective Time and held in the treasury of
         NPL or owned by Southwest or the Merger Sub shall automatically be
         canceled and extinguished and no payment shall be made with respect
         thereto.

                  (c) Each share of Merger Sub Common Stock, par value $1.00 per
         share, issued and outstanding immediately prior to the Effective Time
         shall automatically be converted into and become one validly issued,
         fully paid and nonassessable share of Common Stock, par value $1.00 per
         share, of the Surviving Corporation.

                  1.6 Closing of NPL Transfer Books. At the Effective Time, the
stock transfer books of NPL shall be closed and no transfer of shares of NPL
Common Stock issued and outstanding immediately prior to the Effective Time
shall thereafter be made. If, after the Effective Time, valid certificates
previously representing such shares are presented to the Surviving Corporation
or the Disbursing Agent (as defined in Section 1.7), they shall be exchanged as
provided in Section 1.7.

                  1.7 Exchange of Certificates. After the Effective Time, the
Stock Transfer Department of Southwest shall act as Disbursing Agent (the
"Disbursing Agent") in effecting the exchange of Southwest Common Stock for
certificates which, immediately prior to the Effective Time, represented shares
of NPL Common Stock entitled to such exchange pursuant to Section 1.5(a). Upon
the surrender and exchange of a certificate

                                        4


<PAGE>   9



theretofore representing shares of NPL Common Stock, the holder shall be issued
a certificate representing the number of shares of Southwest Common Stock to
which he is entitled pursuant to Section 1.5(a) and the certificate representing
NPL Common Stock shall forthwith be canceled. Until so surrendered and
exchanged, each such certificate shall represent solely the right to receive the
Southwest Common Stock into which the shares of NPL Common Stock it theretofore
represented shall have been converted pursuant to Section 1.5(a), and the
Surviving Corporation shall not be required to issue to the holder thereof the
Southwest Common Stock to which he otherwise would be entitled; provided that
procedures allowing for issuance against lost or destroyed certificates against
receipt of customary and appropriate certifications and indemnities shall be
provided.

                  1.8 Taking of Necessary Action; Further Action. Southwest and
the Merger Sub, on the one hand, and NPL and NPL Shareholders, on the other
hand, shall use all reasonable efforts to take all such action (including
without limitation action to cause the satisfaction of the conditions of the
other to effect the Merger) as may be necessary or appropriate in order to
effectuate the Merger as promptly as possible. If, at any time after the
Effective Time, any further action is necessary or desirable to carry out the
purposes of this Agreement and to vest the Surviving Corporation with full
possession of all the rights, privileges, immunities and franchises of the
Constituent Corporations, the officers and directors of the Surviving
Corporation are fully authorized in the name of the Constituent Corporations or
otherwise to take, and shall take, all such action.

                  1.9 Fair Market Value.


                                        5


<PAGE>   10


                  (a) For purposes of this Agreement, the "Fair Market Value" of
         a share of Southwest Common Stock shall be determined as follows:

                           (i) Upon receipt of all required regulatory approvals
                  of the Merger, the parties shall as promptly as practicable
                  make a joint public announcement (the "Public Announcement")
                  that such regulatory approvals have been obtained.

                           (ii) The "Fair Market Value" of a share of Southwest
                  Common Stock shall be the average of the closing prices of the
                  Southwest Common Stock on the New York Stock Exchange, for the
                  twenty trading days ending on the trading day which is five
                  trading days prior to the Closing Date. The closing prices
                  printed in The Wall Street Journal will be presumed to be
                  correct in the absence of evidence to the contrary.

                  (b) Notwithstanding Section 1.9(a):

                           (i) If the Fair Market Value of a share of Southwest
                  Common Stock determined as provided in Section 1.9(a) is
                  greater than $17.50, Noel T. Coon may terminate this Agreement
                  (on behalf of NPL and NPL Shareholders) by written notice to
                  Southwest delivered not less than two business days prior to
                  the Closing Date unless Southwest and Merger Sub notify Noel
                  T. Coon in writing on or prior to the Closing Date that
                  Southwest and Merger Sub agree that, for purposes of this
                  Agreement, the Fair Market Value of a share of Southwest
                  Common Stock shall be $17.50; and

                           (ii) If the Fair Market Value of a share of Southwest
                  Common 

                                        6


<PAGE>   11


                  Stock determined as provided in Section 1.9(a) is less than
                  $15.00, Southwest may terminate this Agreement by written
                  notice to Noel T. Coon delivered not less than two business
                  days prior to the Closing Date unless Noel T. Coon notifies
                  Southwest in writing on or prior to the Closing Date that he
                  agrees (on behalf of NPL and NPL Shareholders) that, for
                  purposes of this Agreement, the Fair Market Value of a share
                  of Southwest Common Stock shall be $15.00.

                           (iii) NPL and NPL Shareholders each agree to be bound
                  by the decision made by Noel T. Coon pursuant to the
                  provisions of subsections 1.9(b)(i) and (ii) above.

                           In the event of any termination of this Agreement
                  pursuant to Section 1.9(b), the parties hereto shall have no
                  further obligation whatsoever to each other hereunder except
                  pursuant to those provisions of this Agreement which expressly
                  survive the termination hereof.

         2. Effective Time; Closing. The Merger shall become effective at the
Effective Time.

         3. Representations and Warranties of NPL. The "NPL Disclosure
Schedules" shall mean all of the disclosure schedules required by this
Agreement, dated as of the date hereof, which have been delivered by NPL. NPL
hereby represents and warrants to Southwest as follows:

                  3.1 Organization, Power, Good Standing, Etc.

                  (a) NPL is a corporation duly organized, validly existing and
         in good


                                       7
<PAGE>   12



         standing under the laws of the State of Minnesota. NPL has all the
         requisite corporate power and authority to own, lease and operate all
         of its properties and assets and to carry on its business as currently
         conducted. NPL is duly licensed or qualified to do business and is in
         good standing in each jurisdiction in which the nature of the business
         conducted by it makes such licensing or qualification necessary and
         where the failure to be so qualified would, individually or in the
         aggregate, have a Material Adverse Effect (as defined below) on NPL.
         NPL has heretofore delivered to Southwest correct copies of its
         Articles of Incorporation (the "Articles") and its Bylaws as in effect
         on the date hereof. As used in this Agreement, the term "Material
         Adverse Effect" with respect to a party shall mean any change or effect
         that is reasonably likely to be materially adverse to the business,
         operations, properties, condition (financial or otherwise), assets or
         liabilities of such party taken as a whole.

                  (b) NPL has no subsidiaries. NPL has no affiliates, other than
         other businesses, firms, corporations, partnerships, joint ventures, or
         similar organizations which are owned in whole or in part by Noel T.
         Coon.

                  (c) The minute books of NPL contain materially complete and
         accurate records of all meetings held and other corporate action taken,
         since December 31, 1990, by the company's stockholders and Board of
         Directors.

                  (d) Except as set forth on Disclosure Schedule 3.1(d), NPL
         does not own (beneficially or otherwise) any capital stock or other
         equity interest in any corporation or other entity.

                                       8
<PAGE>   13

                  (e) Except as listed on Disclosure Schedule 3.1(e), NPL is not
         a party to nor is it or any of its assets bound by any agreement which
         relates to any equity interest of NPL in any partnership, joint
         venture, or similar enterprise pursuant to which NPL may be required to
         transfer funds in respect of any equity interest to, make an investment
         in, or guarantee or assume any debt, dividend or other obligation of,
         any person, entity, partnership, joint venture or similar enterprise,
         or pursuant to which NPL is or is required to become an equity
         investor.

                  (f) Except as specifically disclosed in this Agreement, no
         other agreements, either written or oral, exist between NPL and Noel T.
         Coon or businesses owned by Noel T. Coon which would require the
         transfer of NPL funds or assets.

                  3.2 Capitalization. The authorized capital stock of NPL
consists of 15,000 shares of common stock, par value $10 per share ("NPL Common
Stock"). As of the date hereof, 5,771 shares of NPL Common Stock (and no shares
of NPL Preferred Stock) were issued and outstanding. No shares of stock are held
in NPL's treasury. All of the issued and outstanding shares of NPL Common Stock
have been duly authorized, validly issued, and are fully paid and nonassessable,
with no personal liability attaching to the ownership thereof. Other than shares
reserved for issuance under the Stock Purchase Agreement (as hereinafter
defined), there are no shares of NPL Common Stock reserved for issuance for any
reason. NPL is not bound by any outstanding subscriptions, options, warrants,
calls, commitments or agreements of any character calling for the transfer,
purchase, or issuance of any shares of its capital stock or any securities
representing the right to

                                       9
<PAGE>   14

purchase or otherwise receive any shares of its capital stock or any securities
convertible into or representing the right to purchase or subscribe for any such
shares except for the obligations of NPL under the Stock Purchase Agreement of
March 7, 1994, as amended (the "Stock Purchase Agreement"), providing for the
possible issuance of up to 1,236 additional shares each to Messrs. Johnson and
Kemper (up to 2,472 in total) in order to implement said Agreement.
Notwithstanding the foregoing, NPL further represents that all of its stock is
now owned by Noel T. Coon and that William L. Johnson and Michael J. Kemper have
an option to purchase up to 15 percent each of the outstanding shares of NPL by
purchasing with promissory notes ("Option Notes") newly issued shares of NPL
from NPL as provided in the Amendment to Stock Purchase Agreement dated November
12, 1995. Immediately prior to the exercise of such option, NPL will issue a
dividend to Noel T. Coon in the form of a promissory note ("Dividend Note") in
the amount equal to (and conditioned upon the execution and delivery of) the
Option Notes. NPL will pay and discharge the Dividend Note by transferring the
Option Notes to Coon. Southwest hereby consents to the exercise of the option,
the foregoing dividend and payment of the Dividend Note as provided above, and
agrees to recognize Messrs. Johnson and Kemper as shareholders of NPL in the
event the option is legally exercised in accordance with its terms on or prior
to the Closing Date.

                  3.3 Authority. NPL and NPL Shareholders have the requisite
power and authority to execute and deliver this Agreement and to consummate the
transactions contemplated hereby. Assuming the due authorization, execution and
delivery hereof by the other parties hereto, this Agreement constitutes a valid
and binding obligation of NPL

                                       10
<PAGE>   15

and NPL Shareholders, enforceable against them in accordance with its terms.

                  3.4 No Violation. Except as listed on Disclosure Schedule 3.4,
neither the execution and delivery of this Agreement nor the consummation by NPL
or NPL Shareholders of the transactions contemplated hereby, nor compliance by
NPL or NPL Shareholders with any of the terms or provisions hereof, will (i)
violate any provision of the Articles or Bylaws of NPL, (ii) assuming the
consents and approvals referred to in Section 3.5 hereof are duly obtained,
violate any statute, code, ordinance, rule, regulation, judgment, order, writ,
decree or injunction applicable to NPL, or any of its respective properties or
assets, or (iii) violate, conflict with, result in a breach of any provisions
of, constitute a default (or an event which, with notice or lapse of time, or
both, would constitute a default) under, result in the termination of,
accelerate the performance required by, or result in the creation of any lien,
security interest, charge or other encumbrance upon any of the properties or
assets of NPL, under any of the terms, conditions or provisions of any note,
bond, mortgage indenture, deed of trust, license, lease, agreement or other
instrument or obligation to which NPL is a party, or by which it or any of its
properties or assets may be bound or affected, except with respect to (iii)
above, for such violations, conflicts, breaches, defaults, terminations,
accelerations and encumbrances which would not prevent consummation of the
transactions contemplated hereby and would not have a Material Adverse Effect.
Prior to Closing, NPL and NPL Shareholders shall provide written evidence to
Southwest that NPL has obtained approvals or waivers for all restrictions listed
on Disclosure Schedule 3.4.

                  3.5 Consents and Approvals. Except for (i) consents and
approvals of,

                                       11
<PAGE>   16

deliveries to, or filings or registrations with the Securities and Exchange
Commission (the "SEC"), the Federal Trade Commission (the "FTC"), the United
States Department of Justice (the "Justice Department"), or other applicable
federal and state governmental authorities and (ii) the consents, approvals,
filings or registrations set forth on Disclosure Schedule 3.4, no consents or
approvals of or filings or registrations with any third party or public body or
authority, except for consents, approvals, filings or registrations where the
failure to obtain such consents or approvals or to make such filings or
registrations would not prevent or delay the Merger or have a Material Adverse
Effect, are necessary in connection with the execution and delivery by NPL and
NPL Shareholders of this Agreement and the consummation of the Merger.

                  3.6 Financial Statements.

                  (a) NPL has previously delivered or made available to
         Southwest copies of (i) the balance sheets of NPL as of December 31,
         1992, 1993 and 1994 respectively, and the related statements of income
         and retained earnings and statements of cash flows for each of the
         three years ended, respectively, on December 31, 1992, 1993 and 1994,
         in each case accompanied by the NPL audit reports of Deloitte & Touche
         LLP, independent public accountants, with respect to NPL (the "NPL
         1992, 1993 and 1994 Financial Statements" respectively), and (ii) the
         unaudited balance sheet of NPL as of July 30, 1995 and the related
         unaudited income statement for the seven-month period then ended (the
         "July 1995 Financial Statements"). The NPL 1992, 1993 and 1994
         Financial Statements referred to herein (including the related notes)
         present fairly the financial position of NPL, as


                                       12
<PAGE>   17

         of the respective dates set forth therein, and present fairly the
         results of the operations and changes in stockholders' equity and cash
         flows of NPL for the respective fiscal periods or as of the respective
         dates set forth therein.

                  (b) The NPL 1992, 1993 and 1994 Financial Statements
         (including the related notes) have been prepared in accordance with
         generally accepted accounting principles consistently applied during
         the periods involved. The July 1995 Financial Statements present fairly
         the financial position of NPL as of the respective dates set forth
         therein, and present fairly the results of the operations of NPL for
         the seven months then ended.

                  (c) The books and records of NPL have been, and are being,
         maintained in accordance with applicable legal and accounting
         requirements.

                  3.7 Brokerage. There are no claims for investment banking
fees, brokerage commissions, finder's fees or similar compensation payable by
NPL in connection with the transactions contemplated by this Agreement.

                  3.8 Absence of Certain Changes or Events. As of the date of
this Agreement, there has not been any material adverse change in the business,
operations, properties, assets or financial condition of NPL, taken as a whole,
from that described in the audited NPL 1994 Financial Statements and, to the
best of NPL's knowledge, no fact or condition existed as of the date hereof that
NPL believes will cause such a material adverse change prior to the Closing
Date. The parties hereto agree that none of the information disclosed in the
July 1995 Financial Statements shall constitute a material adverse change for
purposes of this Agreement.

                                       13
<PAGE>   18

                  3.9 Litigation, Etc. As of the date of this Agreement, (a)
there are no actions, suits, claims, inquiries, proceedings or investigations
before any court, commission, bureau, regulatory, administrative or governmental
agency, arbitrator, body or authority known to NPL Shareholders or management to
be pending or threatened against NPL which will result in liabilities, including
defense costs, in excess of $1,000 in the aggregate except those listed on
Disclosure Schedule 3.9 and (b) NPL is not subject to any order, judgment or
decree and is not in default with respect to any such order, judgment or decree.

                  3.10 Taxes and Tax Returns.

                  (a) The amounts recorded as provisions for taxes in the NPL
         July 1995 Financial Statements are sufficient for all material accrued
         and unpaid federal, state, county and local taxes, interest and
         penalties of NPL, whether or not disputed, for the period ended July
         30, 1995, and for all fiscal periods prior thereto. Except as set forth
         on Disclosure Schedule 3.10(b), NPL has not been notified of an
         Internal Revenue Service examination or of an examination by any state
         tax authority. NPL has not granted any waiver of any statute of
         limitations with respect to, or any extension of a period for the
         assessment of, any Tax (as hereinafter defined). Complete and correct
         copies of the income tax returns of NPL for the four years ended
         December 31, 1994, as filed with the Internal Revenue Service and all
         state and local taxing authorities, together with all related
         correspondence and notices, have previously been made available to
         Southwest.

                  (b) Except as set forth on Disclosure Schedule 3.10(b), NPL
         has timely

                                       14
<PAGE>   19

         and correctly filed all federal, state, county and local tax and other
         returns and reports (collectively, "Returns") required by applicable
         law to be filed (including without limitation, estimated tax returns,
         income tax returns, excise tax returns, sales tax returns, use tax
         returns, property tax returns, franchise tax returns, information
         returns and withholding, employment and payroll tax returns), and has
         paid all taxes, levies, license and registration fees, charges or
         withholdings of any nature whatsoever shown by such Returns to be owed,
         or which are otherwise due and payable (hereinafter called "Taxes"),
         and to the extent any material liabilities for Taxes as of July 30,
         1995 have not been fully discharged, full and complete reserves have
         been established in the July 1995 Financial Statements. NPL is not in
         default in the payment of any Taxes due or payable or any assessments
         received in respect thereof except for Taxes which are being contested
         in good faith. Except as listed on Disclosure Schedule 3.10(b), no
         additional assessments of Taxes which might be payable by NPL are known
         to NPL to be proposed, pending or threatened, other than Taxes for
         periods for which returns are not yet filed and which have been
         accrued.

                  (c) There are no intercompany tax-sharing agreements to which
         NPL is a party.

                  3.11 Employees; Employee Benefit Plans.

                  (a) Except as listed on Disclosure Schedule 3.11(a), other
         than union contracts, as of the date hereof NPL is not a party to or
         bound by or in any manner liable under any contract, arrangement or
         understanding (whether written or oral)

                                       15
<PAGE>   20

         with respect to the employment or compensation of any officers,
         employees or consultants, and consummation of the transactions
         contemplated by this Agreement will not (either alone or upon the
         occurrence of any additional acts or events) result in payments
         (whether of severance pay or otherwise) becoming due from NPL to any
         officer or employee other than the existing employment contracts with
         Mr. William L. Johnson and Mr. Michael J. Kemper which they each hereby
         agree will automatically cancel on December 31, 1996 by mutual
         agreement without any penalty or additional compensation, except the
         bonuses earned thereunder in 1996 will be paid in 1997 when the audited
         1996 financial statements are available to determine NPL's pretax
         income. NPL agrees to accrue all costs to be incurred for severance
         payments and the Pete Middents award listed on Disclosure Statement
         3.11(a) in its 1995 Financial Statements.

                  (b) Except as listed in Disclosure Schedule 3.11(b), as of the
         date hereof, there are not, and there have not been at any time in the
         past three years, any actions, suits, claims or proceedings (which have
         been served on NPL) before any court, commission, bureau, regulatory,
         administrative or governmental agency, arbitrator, body or authority
         pending or, to the best of NPL Shareholders' or management's knowledge,
         threatened by any employees, former employees or other persons relating
         to the employment practices or activities of NPL (except for threatened
         actions which have subsequently been resolved).

                  (c) With respect to all employee benefit plans, NPL represents
         and warrants as follows:

                                       16
<PAGE>   21

                           (i) All employee benefit plans, as defined in Section
                  3(3) of the Employee Retirement Income Security Act of 1974,
                  as amended ("ERISA"), and any other pension, bonus, deferred
                  hospitalization, health and other employee benefit plan,
                  program or arrangement, whether formal or informal, under
                  which NPL has any obligation or liability, or under which any
                  employee or former employee of NPL has any rights to benefits
                  (the "Benefit Plans") are set forth on Disclosure Schedules
                  3.11(a) and 3.11(c)(i). All Benefit Plans that are subject to
                  the funding requirements in Title I, Subtitle B, Part 3 of
                  ERISA or Section 412 of the Internal Revenue Code of 1986, as
                  amended (the "Code"), are in compliance with such funding
                  standards, and no waiver or variance from such funding
                  requirements has been obtained or applied for under Section
                  412(d) of the Code. None of the Benefit Plans is subject to
                  Title IV of ERISA or is a "multi-employer plan," as such term
                  is defined in Section 3(37) and 4001(a)(3) of ERISA and
                  Section 414(f) of the Code.

                           (ii) Except as listed on Disclosure Schedule
                  3.11(c)(ii), the terms of the Benefit Plans are, and the
                  Benefit Plans have been administered, in accordance with the
                  requirements of ERISA, the Code, applicable law and the
                  respective plan documents. None of the Benefit Plans is under
                  audit or is the subject of an investigation by the Internal
                  Revenue Service, the U.S. Department of Labor or any other
                  federal or state governmental agency. All material reports and
                  information required to be filed with, or provided to, the

                                       17
<PAGE>   22

                  United States Department of Labor, Internal Revenue Service,
                  the Pension Benefit Guaranty Corporation (the "PBGC") and plan
                  participants and beneficiaries with respect to each Benefit
                  Plan have been timely filed or provided. With respect to each
                  Benefit Plan for which an annual report has been filed, no
                  material change has occurred with respect to the matters
                  covered by the most recent annual report since the date
                  thereof.

                           (iii) NPL is not aware of any facts regarding any
                  Benefit Plan which is an "employee pension benefit plan" as
                  defined in Section 3(2) of ERISA (collectively, the "Employee
                  Pension Benefit Plans") that would present a significant risk
                  that any Employee Pension Benefit Plan would not be determined
                  by the appropriate District Director of the Internal Revenue
                  Service to be "qualified" within the meaning of Section 401(a)
                  of the Code, or with respect to which any trust maintained
                  pursuant thereto is not exempt from federal income taxation
                  pursuant to Section 501 of the Code, or with respect to which
                  a favorable determination letter could not be issued by the
                  Internal Revenue Service with respect to each such Employee
                  Pension Benefit Plan.

                           (iv) With respect to each Benefit Plan, all
                  contributions, premiums or other payments due or required to
                  be made to such plans as of the Effective Time have been or
                  will be made or accrued as required by the respective plan
                  documents.

                           (v) To the best of NPL's knowledge, there are not
                  now, nor have

                                       18
<PAGE>   23

                  there been, any "prohibited transactions", as such term is
                  defined in Section 4975 of the Code or Section 406 of ERISA,
                  involving NPL or any officer, director or employee of NPL with
                  respect to the Benefit Plans that could subject NPL or any
                  other party in interest to the penalty or tax imposed under
                  Section 502(I) of ERISA and Section 4975 of the Code.

                           (vi) As of the date hereof, no claim, lawsuit,
                  arbitration or other action (which has been served on NPL) has
                  been instituted, asserted or, to the best of NPL Shareholders'
                  or management's knowledge, threatened by or on behalf of any
                  Benefit Plan or by any employee alleging a breach or breaches
                  of fiduciary duty or violations of other applicable state or
                  federal law with respect to such Benefit Plan, which could
                  result in liability on the part of NPL or any Benefit Plan
                  under ERISA or any other law, nor is there any basis known to
                  NPL Shareholders or management for successful prosecution of
                  such a claim, and Southwest will be notified promptly in
                  writing of any such threatened or pending claim arising
                  between the date hereof and the Closing.

                           (vii) Except as may be required by the Consolidated
                  Omnibus Budget and Reconciliation Act of 1985, as amended
                  ("COBRA"), no Benefit Plan which is an employee welfare
                  benefit plan (within the meaning of Section 3(1) of ERISA)
                  provides for continuing benefits or coverage for any
                  participant or beneficiary of a participant after such
                  participant's termination of employment nor does NPL have any
                  current or projected liability under

                                       19
<PAGE>   24

                  any such plans.

                           (viii) NPL has not maintained or contributed to, and
                  does not currently maintain or contribute to, any severance
                  pay plan under which any employees of NPL, other than union
                  employees, are entitled to any benefits. All payments (other
                  than regular wages and vacation pay) made to employees of NPL
                  coincident with or in connection with termination of
                  employment from January 1, 1993 to the date hereof, are
                  disclosed on Disclosure Schedule 3.11(c)(viii).

                           (ix) Except as otherwise provided in this Agreement,
                  no individual will accrue or receive any additional benefits,
                  service, or accelerated rights to payment or vesting of
                  benefits under any Benefit Plan as a result of the
                  transactions contemplated by this Agreement.

                           (x) NPL has to the extent relevant complied in all
                  material respects with all of the requirements of COBRA.

                            (xi) All amendments required to bring all Benefit
                  Plans into conformity with any of the applicable provisions of
                  ERISA and the Code have been duly adopted or will be duly
                  adopted as of the Closing Date, subject to further revisions
                  that may be required by the Internal Revenue Service.

                           (xii) No individual will accrue or receive from NPL
                  any payments, benefits, services or accelerated rights to
                  payment or vesting of benefits, or otherwise receive any other
                  rights, which would constitute a "parachute payment" as
                  defined in Section 280G(b)(2) of the Code as a result of or in

                                       20
<PAGE>   25

                  connection with the transactions contemplated by this
                  Agreement.

                  3.12     Compliance With Applicable Law.

                  (a) NPL holds all licenses, certificates, franchises, permits
         and other governmental authorizations ("Permits") necessary for the
         lawful conduct of its business and such Permits are in full force and
         effect, and NPL is in all respects complying therewith, except where
         the failure to possess or comply with such Permits would not have a
         Material Adverse Effect on NPL.

                  (b) Except as set forth on Disclosure Schedule 3.12(b), NPL is
         and for the past three years has been in compliance with all foreign,
         federal, state and local laws, statutes, ordinances, rules, regulations
         and orders applicable to the operation, conduct or ownership of its
         business or properties except for any noncompliance which is not
         reasonably likely to have in the aggregate a Material Adverse Effect on
         NPL.

                  3.13 Contracts and Agreements. Except as listed on Disclosure
Schedule 3.13, as of the date hereof, and except with respect to existing lease
agreements and borrowings in the ordinary course: (a) NPL is not a party to or
bound by any commitment, contract, agreement or other instrument which involves
or could involve aggregate future payments by NPL of more than $50,000; and (b)
no commitment, contract, agreement or other instrument, other than NPL's charter
documents, to which NPL is a party or by which it is bound, limits the freedom
of NPL to compete in any line of business or with any person.

                  3.14 Disclosure. To the knowledge of NPL, no representation or
warranty

                                       21
<PAGE>   26

regarding NPL contained in this Agreement, and no statement contained in the
Disclosure Schedules delivered by NPL hereunder, contains any untrue statement
of a material fact or omits to state a material fact necessary in order to make
a statement herein or therein, in light of the circumstances under which it was
made, not misleading.

                  3.15     Title to Property.

                  (a) Real Property. Disclosure Schedule 3.15(a) contains a
         description of all interests in real property, whether owned, leased or
         otherwise claimed, including a list of all leases of real property, in
         which NPL has or claims an interest as of the date hereof and any
         guarantees of any such leases by NPL. Each such lease is legal, valid
         and binding as between NPL and the other party or parties thereto, and
         the occupant is a tenant or possessor in good standing thereunder, free
         of any material default or breach whatsoever and quietly enjoys the
         premises provided for therein. NPL does not own any real property on
         the date hereof. All real property and fixtures material to the
         business, operations or financial condition of NPL are in good
         condition and repair, ordinary wear and tear excepted.

                  (b) Environmental Matters. Except as listed on Disclosure
         Schedule 3.15(b), the real property leased by NPL on the date hereof
         did not contain any underground storage tanks, asbestos,
         ureaformaldehyde, uncontained polychlorinated biphenyls, or, except
         for materials which are ordinarily used in office buildings and office
         equipment such as janitorial supplies and do not give rise to financial
         liability therefor under the hereafter defined Environmental Laws,
         releases of hazardous substances as such terms may be defined by all
         applicable federal, state

                                       22
<PAGE>   27

         or local environmental protection laws and regulations ("Environmental
         Laws"). As of the date hereof, (i) no part of any such real property
         has been listed or, to the knowledge of NPL, proposed for listing on
         the National Priorities List pursuant to the Comprehensive
         Environmental Response, Compensation and Liability Act ("CERCLA") or on
         a registry or inventory of inactive hazardous waste sites maintained by
         any state, and (ii) no notices have been received alleging that NPL was
         a potentially responsible person under CERCLA or any similar statute,
         rule or regulation. NPL knows of no material violation of law,
         regulation, ordinance (including, without limitation, laws, regulations
         and ordinances with respect to hazardous waste, zoning, environmental,
         city planning or other similar matters) relating to its respective
         properties. NPL Shareholders agree to reimburse the Surviving
         Corporation for any reasonable remediation expenses incurred or claims
         made at all the sites listed in Disclosure Schedule 3.15(b) prior to
         the first anniversary of the Closing Date in accordance with the
         deductible and maximum set forth in Section 13.1(d).

                  3.16 Insurance. Disclosure Schedule 3.16 contains a true and
complete list and a brief description (including name of insurer, agent,
coverage and expiration date) of all insurance policies in force on the date
hereof with respect to the business and assets of NPL (other than insurance
policies under which NPL is named as a loss payee or additional insured). NPL is
in compliance with all of the material provisions of all insurance policies.
Each such policy is outstanding and in full force and effect and, except as set
forth on Disclosure Schedule 3.16, NPL is the sole beneficiary of such policies
except for

                                       23
<PAGE>   28

additional insureds. All premiums and other payments due under any such policy
have been paid or accrued.

                  3.17 Powers of Attorney. Except as listed on Disclosure
Schedule 3.17, NPL has no powers of attorney outstanding other than those issued
pursuant to the requirements of regulatory authority.

         4. Representations and Warranties of Southwest. Southwest hereby
represents and warrants to NPL as follows:

                  4.1      Corporate Organization.

                  (a) Southwest is a corporation duly organized, validly
         existing and in good standing under the laws of the State of
         California. Southwest has all the requisite power and authority to own,
         lease and operate all of its properties and assets and to carry on its
         business as it is currently conducted, and is duly licensed or
         qualified to do business and is in good standing in each jurisdiction
         in which the nature of the business conducted by it makes such
         licensing or qualification necessary and where failure to be so
         qualified would not, individually or in the aggregate, have a Material
         Adverse Effect on Southwest.

                  (b) Merger Sub is a corporation duly organized, validly
         existing and in good standing under the laws of the State of Nevada and
         authorized to do business in the State of Arizona.

                  4.2      Authority.

                  (a) Southwest has full corporate power and authority to
         execute and deliver this Agreement and, subject to applicable
         regulatory approvals, to

                                       24
<PAGE>   29

         consummate the transactions contemplated hereby. The execution and
         delivery of this Agreement and consummation of the transactions
         contemplated hereby have been duly and validly approved by the Board of
         Directors of Southwest. This Agreement has been duly and validly
         executed and delivered by Southwest and, assuming the due
         authorization, execution and delivery thereof by the other parties
         hereto, constitutes valid and binding obligations of Southwest,
         enforceable against it in accordance with the terms of the Agreement.

                  (b) Southwest as the sole shareholder of Merger Sub will cause
         it to take any and all action necessary and appropriate to carry out
         its obligations under this Agreement.

                  (c) Merger Sub has full corporate power and authority to
         execute and deliver this Agreement and, subject to applicable
         regulatory approvals, to consummate the transactions contemplated
         hereby. The execution and delivery of this Agreement and consummation
         of the transactions contemplated hereby have been or will be duly and
         validly approved by the Board of Directors of Merger Sub. This
         Agreement has been duly and validly executed and delivered by Merger
         Sub and, assuming the due authorization, execution and delivery
         thereof, by the other parties hereto, constitutes valid and binding
         obligations of Merger Sub, enforceable against it in accordance with
         the terms of the Agreement.

                  4.3 No Violation. Neither the execution and delivery of this
Agreement nor the consummation by Southwest or Merger Sub of the transactions
contemplated hereby, nor compliance by Southwest or Merger Sub with any of the
terms hereof, will (i) violate

                                       25
<PAGE>   30

any provision of the Articles of Incorporation or Bylaws of Southwest or Merger
Sub, or (ii) assuming that the consents and approvals referred to in Section 4.4
are duly obtained, violate any statute, code, ordinance, rule, regulation,
judgment, order, writ, decree or injunction applicable to Southwest or Merger
Sub or any of their properties or assets, or (iii) violate, conflict with,
result in the breach of any provisions of, constitute a default (or an event
which, with notice or lapse of time, or both, would constitute a default) under,
result in the termination of, accelerate the performance required by, or result
in the creation of any lien, security interest, charge or other encumbrance upon
any of the respective properties or assets of Southwest or Merger Sub under, any
of the terms, conditions or provisions of any note, bond, mortgage, indenture,
deed of trust, license, lease, agreement or other instrument or obligation to
which Southwest or Merger Sub is a party, or by which they or their respective
properties or assets may be bound or affected, except with respect to (iii)
above, for such violations, conflicts, breaches, defaults, terminations,
accelerations or encumbrances which in the aggregate will not prevent or delay
the consummation of the transactions contemplated hereby.

                  4.4 Consents and Approvals. Except for consents and approvals
of or filings or registrations with the SEC, the FTC, the Justice Department and
other applicable federal and state governmental authorities, no consents or
approvals of or filings or registrations with any third party or any public body
or authority are necessary in connection with the execution and delivery by
Southwest or Merger Sub of this Agreement.

                  4.5 Sufficient Resources. Southwest will have available at the
Closing sufficient common stock to enable it lawfully to satisfy its payment
obligations pursuant to

                                       26
<PAGE>   31

this Agreement subject to approval by the California Public Utilities
Commission. Upon issuance as provided in this Agreement, the Southwest Common
Stock will be duly and validly issued, fully paid and nonassessable and will be
owned by the NPL Shareholders free and clear of any liens or encumbrances.
Southwest has and will have sufficient management and financial resources to
make reasonable efforts to obtain the required regulatory approvals for the
Merger. On the date of this Agreement, there is no pending or, to the knowledge
of Southwest, threatened legal or governmental proceeding against Southwest or
any subsidiary or affiliate thereof which would affect Southwest's ability to
obtain any of the required regulatory approvals or satisfy any of the other
conditions required to be satisfied in order to consummate the transactions
contemplated by this Agreement. Southwest will promptly notify NPL if any of the
representations contained in this Section 4.5 ceases to be true and correct.

                  4.6 Litigation. No action, suit, counterclaim or other
litigation, investigation or proceeding to which Southwest or any of its
subsidiaries is a party is pending, or is known by the executive officers of
Southwest or any of its subsidiaries to be threatened, against Southwest or any
of its subsidiaries before any court or governmental or administrative agency,
domestic or foreign which would be reasonably expected to result in any
liabilities which would delay or prevent the consummation of the Merger. Except
as disclosed herein or the Southwest Reports (as hereinafter defined),

                           (i) There are no legal, administrative, arbitration
                  or other proceedings or claims pending or, to the best of
                  Southwest's knowledge, threatened against Southwest, nor is
                  Southwest subject to any existing judgment which

                                       27
<PAGE>   32

                  would materially affect the consolidated financial condition
                  or results of operations of Southwest;

                           (ii) Southwest has not received any inquiry from an
                  agency of the federal or of any state or local government
                  about the transactions contemplated hereby, or about any
                  violation or possible violation of any law, regulation or
                  ordinance materially affecting its businesses or assets.

                  4.7 Capitalization. Southwest is authorized to issue thirty
million (30,000,000) shares of Southwest Common Stock, $1.00 par value. As of
November 1, 1995, there were twenty-four million three hundred twenty thousand
two hundred eighty-eight (24,320,288) shares of Southwest Common Stock issued
and outstanding, and no other outstanding rights to purchase any common stock of
Southwest existed except under the Southwest Dividend Reinvestment and Stock
Purchase Plan, Employees' Investment Plan and Management Incentive Plan.

                  4.8 SEC Filings. Southwest has provided the NPL Shareholders
with true and correct copies of (i) Southwest's Annual Report on Form 10-K for
the fiscal year ended December 31, 1994; (ii) Southwest's Annual Report to
Stockholders for the fiscal year ended December 31, 1994; (iii) Southwest's
proxy statement for its 1995 Annual Meeting of Shareholders; (iv) Southwest's
Quarterly Reports on Form 10-Q for the fiscal quarters ended March 31, 1995,
June 30, 1995 and September 30, 1995; and (v) any other filings made with the
SEC pursuant to the Securities Exchange Act of 1934 (the "1934 Act") since
January 1, 1995. Between the date hereof and the Closing Date, Southwest will
provide to the NPL Shareholders true and correct copies of all further filings
made with the SEC

                                       28
<PAGE>   33


pursuant to the 1934 Act, as well as all reports or other communications sent to
Southwest's shareholders generally as soon as reasonably available. All of the
foregoing reports, filings, statements and communications are hereinafter
collectively referred to as the "Southwest Reports." None of the Southwest
Reports, when filed or sent, did or will contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements made therein, in light of the circumstances
under which they were made, not misleading.

                  4.9 Business Changes. Except as set forth herein or in the
Southwest Reports, since September 30, 1995, there has not been:

                           (i) Any material adverse change in the consolidated
                  working capital, financial condition, assets, liabilities
                  (whether absolute, accrued, contingent or otherwise), or
                  operating profits, of Southwest or any material adverse change
                  in the business of Southwest taken as a whole;

                           (ii) Any damage, destruction or loss (whether or not
                  covered by insurance) materially and adversely affecting the
                  business of Southwest taken as a whole; or

                           (iii) Any termination of any material permit or
                  material license issued to Southwest or to any of its
                  employees or agents upon which a material portion of
                  Southwest's business is dependent.

                  4.10 Financial Statements.

                  (a) The consolidated financial statements of Southwest
         included within the Southwest Reports fairly present the consolidated
         financial position of

                                       29
<PAGE>   34

         Southwest and the consolidated results of its operations at the dates
         and for the periods to which they apply; such statements have been
         prepared in conformity with generally accepted accounting principles,
         applied on a consistent basis throughout the periods involved, and such
         financial statements comply with all applicable provisions of
         Regulation S-X of the SEC. The interim consolidated financial
         statements presented in such Reports include all adjustments (subject
         only to normal recurring year-end adjustments) necessary for a fair
         presentation of Southwest's consolidated financial position and
         consolidated results of operations as of the dates and for the periods
         presented therein.

                  (b) On September 30, 1995, Southwest had no material
         liabilities (whether absolute, accrued, contingent or otherwise) which
         were required to be reflected in and disclosed on its balance sheets at
         that date or in the notes thereto pursuant to Regulation S-X of the SEC
         or in accordance with generally accepted accounting principles,
         consistently applied but were not so reflected. Except as set forth
         herein and/or the Southwest Reports, since September 30, 1995,
         Southwest has incurred no material liabilities (whether absolute,
         accrued, contingent or otherwise) in addition to those reflected in or
         disclosed on such balance sheets or the related notes, except
         liabilities incurred in the ordinary course of its business.

                  (c) Southwest's books, records and system of internal
         accounting controls comply in all material respects with Section 13(b)
         of the 1934 Act as in effect on the date hereof.

                  4.11 Disclosure. To the knowledge of Southwest, no
representation or

                                       30
<PAGE>   35

warranty made by Southwest in this Agreement and no certification furnished or
to be furnished by Southwest to NPL pursuant to this Agreement, contains any
untrue statement of a material fact or omits to state a material fact necessary
to make the statements contained herein or therein in the light of the
circumstances under which it was made, not misleading.

         5.       Covenants of the Parties.

                  5.1      Current Information.

                  (a) No later than ten (10) days after the date of this
         Agreement, NPL (on the one hand) and Southwest (on the other hand)
         shall each designate an individual acceptable to the other party (a
         "Designated Representative" and, together, the "Designated
         Representatives") to be the primary point of contact between the
         parties. During the period from the date of their designation to the
         Closing, the Designated Representatives or their representatives shall
         confer on a regular basis so that Southwest is kept advised as to the
         general status of the ongoing operations of NPL. Without limiting the
         foregoing, NPL agrees to confer with Southwest's Designated
         Representative regarding any proposed significant changes to NPL's
         management policies and objectives. NPL will promptly notify
         Southwest's Designated Representative or his or her representatives of
         any material change in the normal course of business or in the
         operation of the properties of NPL or of any governmental complaints,
         investigations or hearings (or communications indicating that the same
         may be contemplated) or the institution or the threat of any litigation
         involving NPL, and will keep Southwest's Designated

                                       31
<PAGE>   36

         Representative or his or her representatives fully informed of such
         events and the progress of any already existing litigation.

                  (b) Southwest shall immediately notify NPL's Designated
         Representative if it appears that there has occurred any change in its
         financial or other condition or any other event that will or may affect
         Southwest's ability to complete the Merger.

                  5.2 NPL Reports. As soon as reasonably available, but in no
event more than 20 calendar days after the end of each accounting month, NPL
will deliver to Southwest its monthly financial reports. As soon as reasonably
available, but in no event more than 120 days after the end of the 1995 fiscal
year, NPL will deliver to Southwest its annual audited financial statements.

                  5.3 Regulatory Matters.

                  (a) The parties hereto will cooperate with each other and use
         all reasonable efforts to prepare all necessary documentation, to
         effect all necessary filings and to obtain all necessary permits,
         consents, approvals and authorizations of all third parties and
         governmental bodies necessary to consummate the transactions
         contemplated by this Agreement including, without limitation, those
         that may be required from the SEC, the FTC, the Justice Department and
         other federal and state regulatory authorities. Southwest and NPL will
         each have the right to review reasonably in advance all information
         relating to themselves and any of their respective subsidiaries,
         together with any other information reasonably requested, which appears
         in any filing made with or written material submitted to any
         governmental body in connection with the transactions contemplated by
         this

                                       32
<PAGE>   37

         Agreement. The parties hereto agree to attempt to keep confidential any
         and all proprietary information which may be of value to their
         competition.

                  (b) Southwest and NPL shall furnish each other with all
         reasonable information concerning themselves, their subsidiaries,
         directors, officers and stockholders and such other matters as may be
         necessary or advisable in connection with any statement or application
         made by or on behalf of Southwest or NPL, or any of Southwest's
         subsidiaries to any governmental body in connection with the Merger and
         the other transactions, applications or filings contemplated by this
         Agreement.

                  (c) Southwest and NPL will promptly furnish each other with
         copies of written communications received by or delivered to any
         governmental body in respect of the transactions contemplated hereby.

                  5.4 Further Assurances. Subject to the terms and conditions
herein provided, each of the parties hereto agrees to use all reasonable efforts
to take, or cause to be taken, all action and to do, or cause to be done, all
things necessary, proper or advisable under applicable laws and regulations to
consummate and make effective the transactions contemplated by this Agreement.
In case that at any time after the Closing any further action is necessary or
desirable to carry out the purposes of this Agreement, the proper officers and
directors of Southwest and NPL shall take all necessary actions, subject to the
terms and conditions of this Agreement.

                  5.5 Public Announcements. The parties will cooperate and
consult with each other in the development and distribution of all news releases
and other public

                                       33
<PAGE>   38

information disclosures with respect to this Agreement or any of the
transactions contemplated hereby, except as may be otherwise limited by law.

                  5.6 Failure to Fulfill Conditions. In the event that either
Southwest or NPL determines that a condition to its obligation to consummate the
transactions contemplated hereby cannot be, or is not likely to be, fulfilled on
or prior to May 15, 1996, it will promptly notify the other party.

                  5.7 Tax Matters.

                  (a)      Return Preparation; Tax Payments.

                           (i) NPL shall prepare, or cause to be prepared, and
                  shall file, or cause to be filed, any required NPL tax returns
                  (including amendments thereto) for all taxable periods prior
                  to and including the Closing Date. NPL shall consult with
                  Southwest regarding the preparation and filing of such returns
                  and Southwest shall be afforded the opportunity to review such
                  returns within a reasonable time prior to the due date for the
                  filing thereof. NPL shall not file any such tax returns
                  without the prior consent of Southwest, which consent shall
                  not be unreasonably withheld or delayed. NPL shall also
                  provide Southwest with copies of such returns in the form
                  actually filed and copies of all backup documentation.

                           Southwest shall be responsible for the preparation
                  and filing of any tax returns of NPL for all taxable periods
                  beginning after the Closing Date.

                           (ii) As soon as practicable after the filing of these
                  returns, but in no event later than April 1, 1996, for the
                  1995 return, and within four months

                                       34
<PAGE>   39

                  of the Closing Date for the 1996 return, NPL or Surviving
                  Corporation shall pay to NPL Shareholders, in cash, 46 percent
                  of their share of the Subchapter S taxable income for such
                  periods as reflected on the applicable Internal Revenue
                  Service Form 1120S and related Schedule K-1.

                           (iii) Southwest hereby consents to and approves the
                  change by NPL from the cash to the accrual method for tax
                  reporting purposes, effective with the tax year beginning
                  January 1, 1996, and the filing with the I.R.S. of whatever
                  documents are required for such change.
                 
                  (b) Tax Audits and Litigation.

                           (i) Representation Prior to Closing Date. Prior to
                  the Closing Date, NPL shall conduct and control the
                  representation of NPL with respect to any audit or
                  administrative or judicial proceeding concerning any tax items
                  or taxable period of NPL, including, without limitation, the
                  sole right to contest or concede any tax item, provided,
                  however, that NPL shall first obtain the consent of Southwest
                  with respect to any settlement or concession, which consent
                  shall not be unreasonably withheld or delayed, and shall
                  afford the opportunity, at Southwest's request, for Southwest
                  to participate fully in all settlement or concession
                  discussions relating to any taxable periods ending on or prior
                  to Closing.

                           (ii) Representation After Closing Date. For any
                  taxable period ending on or before the Closing, Noel T. Coon
                  shall be entitled, at his option and at his expense, to
                  conduct and exercise sole control over the

                                       35
<PAGE>   40

                  representation of NPL with respect to any audit or
                  administrative or judicial proceedings, including, without
                  limitation, the sole right to contest or concede any tax
                  items, provided, however, that Noel T. Coon shall first obtain
                  the consent of Southwest with respect to any settlement or
                  concession, which consent shall not be unreasonably withheld
                  or delayed, and shall afford Southwest the opportunity, at its
                  request, to participate fully in all settlement or concession
                  discussions. 

                  (c) Tax Workpapers. At the time of closing, NPL will provide
         Southwest copies of all tax returns, associated workpapers, documents,
         memoranda and correspondence prepared by NPL's tax preparers and made
         available to NPL for the tax period ended September 30, 1987 and for
         each tax period thereafter through the tax period ending with the
         closing of this Agreement.

         6.       Covenants of NPL.

                  6.1 Conduct of the Business of NPL. During the period from the
date hereof to the Closing, except as otherwise permitted or required hereunder,
NPL will conduct the business of NPL and will engage in transactions only in the
ordinary course and consistent with the past practice and with prudent business
practice, except with the written consent of Southwest (which will not be
unreasonably withheld, delayed or conditioned). For this purpose the parties
shall use the most expeditious means of communication available. During such
period, NPL will use its reasonable efforts in accordance with good business
practice to preserve the business organization of NPL, to keep available to it
and to Southwest the present services of the valued employees of NPL,

                                       36
<PAGE>   41

and to preserve for itself and for Southwest the goodwill of the customers of
NPL and others with whom business relationships exist. In addition, without
limiting the generality of the foregoing, NPL agrees that from the date hereof
to the Closing, except as otherwise consented to or approved by Southwest in
writing (which consent or approval shall not be unreasonably withheld, delayed
or conditioned) or as permitted or required by this Agreement or as required by
law (in which case NPL shall notify Southwest in writing), NPL will not:

                  (a) Change any provisions of NPL's Articles or Bylaws;

                  (b) Change the number of shares of authorized or issued
         capital stock of NPL or issue, or grant any option, warrant, call,
         commitment, subscription, right to purchase or agreement of any
         character relating to the authorized or issued capital stock of NPL, or
         any securities convertible into shares of such stock, or split, combine
         or reclassify any shares of its capital stock, or declare, set aside or
         pay any dividend, or other distributions (whether in cash, stock or
         property or any combination thereof) in respect of the capital stock of
         NPL, or redeem or otherwise acquire any shares of such capital stock
         except as permitted by Section 6.1(m) and except for the issuance of
         additional shares and the declaration and payment of a dividend in the
         form of a Dividend Note in connection with the exercise of stock
         options by Messrs. Johnson and Kemper under the Stock Purchase
         Agreement dated March 7, 1994, as amended by Amendment to Stock
         Purchase Agreement dated November 12, 1995;

                  (c) Grant any severance or termination pay to or enter into or
         amend any

                                       37
<PAGE>   42

         employment agreement with, or increase the amount of payments or fees
         to, any of the employees, officers or directors of NPL except for (i)
         the payments to Messrs. Sutton and Maple listed on Schedule
         3.11(c)(viii), (ii) severance payments under union agreements, (iii)
         miscellaneous other severance payments not known, but not to exceed a
         total of $10,000, (iv) normal salary increases, such as merit,
         promotion, etc., consistent with past practice;

                  (d) Except as listed on Disclosure Schedule 6.1(d), make any
         capital expenditures, including any capitalizable lease obligations, in
         amounts individually in excess of (i) $100,000 or (ii) $250,000 in the
         aggregate, other than expenditures necessary to maintain existing
         assets in good repair;

                  (e) Make or engage in any financing-related transactions other
         than (i) scheduled principal and interest payments on long-term debt,
         capital lease obligations, equipment leases, and the note payable to
         the current stockholder, (ii) transactions necessary to finance,
         consistent with past practices and with prudent business practices,
         capital expenditures made in accordance with the provisions of Section
         6.1(d) hereof, and (iii) borrowings and payments under the working
         capital lines of credit, in the ordinary course of business. Scheduled
         principal and interest payments are listed on Disclosure Schedule
         6.1(e).

                  (f) Make application for the opening of, or open, any new
         offices involving a lease in excess of one year;

                  (g) Acquire assets other than those necessary to the conduct
         of its business in the ordinary course;

                                       38
<PAGE>   43

                  (h) Sell, transfer, assign, encumber or otherwise dispose of
         assets other than has been customary in the ordinary course of
         business;

                  (i) Engage or participate in any material transaction or incur
         or sustain any obligation which would result in a cost to NPL,
         individually or cumulatively of more than $10,000 (a "Material
         Obligation") except for transactions which are in the ordinary course
         of business consistent with past practices and with prudent business
         practices and which are of similar kinds and involve similar amounts;

                  (j) Make any contributions to any Benefit Plans except in such
         amounts and at such times as consistent with past practice;
         discretionary or excess contributions are not permitted;

                  (k) Increase the number of full-time equivalent employees of
         NPL from July 31, 1995 except as consistent with past practice;

                  (l) Make or grant any safety or other bonuses to any employee
         or shareholder, except for bonuses payable to Mr. Johnson or Mr. Kemper
         under their existing respective employment contracts and other bonuses
         consistent with past practices;

                  (m) Make or grant any distributions to any shareholder other
         than customary salary and related benefits except the following:

                           (i) Bonuses to Mr. Johnson and Mr. Kemper in
                  accordance with their existing respective employment
                  contracts;

                           (ii) Distributions to NPL Shareholders sufficient for
                  the payment of their 1995 and 1996 federal and state income
                  taxes on the taxable income

                                       39
<PAGE>   44

                  of NPL;

                           (iii) A distribution to Noel T. Coon as a bonus for
                  1995, computed as fifty percent (50%) of the amount by which
                  the 1995 pretax income of NPL determined in accordance with
                  generally accepted accounting principles consistently applied
                  exceeds four million dollars ($4,000,000), said bonus not to
                  exceed six hundred thousand dollars ($600,000); and

                           (iv) The Dividend Note to Noel T. Coon and the
                  transfer of the Option Notes in payment of the Dividend Note
                  to Noel T. Coon in connection with the exercise of the Johnson
                  and Kemper option exercises as described in Section 3.2.

                  (n)      Agree to do any of the foregoing.

                  6.2 No Solicitation. During the term hereof, neither NPL nor
any of its directors, shareholders, officers, representatives, agents or other
persons controlled by any of them, shall, directly or indirectly, encourage or
solicit, or hold discussions or negotiations with, or provide any information
to, any person, entity or group other than Southwest concerning any merger, sale
of substantial assets not in the ordinary course of business, sale of shares of
capital stock or similar transactions involving NPL. NPL will promptly
communicate to Southwest the terms of any proposal that it may receive in
respect of any such transaction.

                  6.3 Access to Management, Properties and Records;
Confidentiality.

                  (a) NPL shall permit Southwest reasonable access to the
         properties of NPL, and shall disclose and make available to Southwest
         all books, papers and

                                       40
<PAGE>   45

         records relating to the assets, stock, ownerships, properties,
         obligations, operations and liabilities of NPL, including but not
         limited to, all books of account (including the general ledger), tax
         records, budgets, forecasts, minute books of directors' and
         stockholders' meetings, organizational documents, bylaws, material
         contracts and agreements, internal audit reports, filings with any
         regulatory authority, company work papers and supporting documents,
         accountants' work papers, litigation files, plans affecting employees,
         and any other business activities or prospects in which Southwest may
         have a reasonable interest, in each case during normal business hours
         and upon reasonable notice. Between the signing of this Agreement and
         the Closing, the parties shall cooperate in accordance with the
         Memorandum of Mr. Johnson dated November 3, 1995 which is attached
         hereto as Exhibit A.

                  (b) All information furnished by NPL to Southwest or the
         representatives or affiliates of either pursuant to, or in any
         negotiation in connection with, this Agreement shall be treated as the
         sole property of NPL, until consummation of the Merger and, if the
         Merger shall not occur, Southwest and its affiliates, agents and
         advisers shall destroy or return to NPL, as appropriate, all documents
         or other materials containing, reflecting or referring to such
         information, and shall keep confidential all such information and shall
         not disclose or use such information for competitive purposes. Any
         destruction or return shall be certified in writing to the appropriate
         party. The obligation to keep such information confidential shall not
         apply to any information which Southwest can establish by convincing
         evidence was already in its possession (subject to no obligations of
         confidentiality) prior to

                                       41
<PAGE>   46

         the disclosure thereof by NPL; was then generally known to the public;
         becomes known to the public other than as a result of actions by
         Southwest or by its directors, officers or employees or agents; or was
         disclosed to Southwest or to its directors, officers or employees,
         solely by a third party not bound by any obligation of confidentiality.

                  6.4 Assignment of Contract Rights. NPL shall obtain any
consents, waivers or revisions necessary to allow Merger Sub to accede to all of
the rights of NPL under all existing real property and personal property leases,
lines of credit, governmental licenses, permits and other contracts. Any costs
associated with obtaining such consents, waivers and revisions shall be borne by
NPL.

         7.       Employees; Employee Benefit Plans.

                  7.1      Covenants of NPL.

                  (a) Prior to Closing, NPL shall deliver or make available to
         Southwest complete and correct copies (if any) of (i) the most recent
         Internal Revenue Service determination letter relating to each Employee
         Pension Benefit Plan intended to be tax qualified under Sections 401(a)
         and 501(a) of the Code, (ii) the most recent annual report (Form 5500
         Series) and accompanying schedules of each Benefit Plan, filed with the
         Internal Revenue Service or an explanation of why such annual report is
         not required, (iii) the most current summary plan description for each
         Benefit Plan, and (iv) the most recent audited financial statements of
         each Benefit Plan.

                  (b) Except as otherwise provided in this Agreement, NPL shall
         not

                                       42
<PAGE>   47

         establish, amend or terminate any Benefit Plan without the prior
         consultation and approval of Southwest.

         8.       Closing Conditions.

                  8.1 Conditions to Each Party's Obligations Under This
Agreement. The respective obligations of each party under this Agreement to
consummate the Merger shall be subject to the fulfillment at or prior to the
Closing of the following conditions:

                  (a) All necessary regulatory or governmental approvals and
         consents required to consummate the transactions contemplated hereby
         shall have been obtained and shall remain in full force and effect and
         all statutory or regulatory waiting periods in respect thereof shall
         have expired.

                  (b) No party hereto shall be subject to any order, decree or
         injunction of a court or agency of competent jurisdiction which enjoins
         or prohibits the consummation of the Merger.

                  (c) Any applicable pre-merger/acquisition notification
         provisions of Section 7A of the Clayton Act shall have been complied
         with by the parties hereto, and no other statutory or regulatory
         requirements with respect to the Clayton Act shall be applicable. There
         shall be no pending or threatened proceedings with respect to this
         Agreement or the Merger under any applicable antitrust law.

                  8.2 Conditions to the Obligations of Southwest under this
Agreement. The obligations of Southwest under this Agreement shall be further
subject to the satisfaction, at or prior to the Closing, of the following
conditions, any one or more of which may be waived by Southwest:

                                       43
<PAGE>   48

                  (a) Each of the obligations or covenants of NPL required to be
         performed by them at or prior to the Closing pursuant to the terms of
         this Agreement shall have been duly performed and complied with in all
         material respects and each of the representations and warranties of NPL
         contained in this Agreement shall be true and correct in all material
         respects as of the date hereof and as of the Closing as though made at
         and as of the Effective Time (except as to any representation or
         warranty that specifically relates to an earlier date, which shall be
         true and correct as of such earlier date), provided, however, that if
         any representation or warranty has proved untrue or incorrect in any
         material respect and the damage or loss resulting from such failure can
         be reduced to a dollar amount to which Noel T. Coon and Southwest
         agree, then such representation or warranty shall, for purposes of this
         closing condition, be deemed to be true and correct in all material
         respects at Closing, and the total Fair Market Value of the Southwest
         Common Stock to be delivered hereunder shall be reduced by such agreed
         amount.

                  (b) Any consents, waivers, clearances, approvals and
         authorizations of regulatory or governmental bodies or third parties
         that are necessary in connection with the consummation of the
         transactions contemplated hereby shall have been obtained, and none of
         such consents, waivers, clearances, approvals or authorizations shall
         contain any term or condition that would have a Material Adverse Effect
         on NPL or Southwest or the Surviving Corporation. For purposes of
         Section 8 hereof, any "approval" which contains any of the foregoing
         unacceptable terms or conditions shall be deemed to be a regulatory
         "denial."

                                       44
<PAGE>   49

                  (c) Southwest shall have received an opinion, dated the date
         of the Closing, from Squire, Sanders & Dempsey and/or Arnold R.
         Madigan, counsel to NPL, substantially to the effect set forth in
         Exhibit B hereto.

                  (d) Since the date of this Agreement, there shall have been no
         material adverse change in the overall financial condition, business or
         results of operations of NPL taken as a whole. Normal seasonal
         variations are deemed not to be such a material adverse change.

                  (e) Except as otherwise requested, the directors of NPL shall
         have resigned effective on or prior to the Closing.

                  (f) NPL shall have furnished Southwest with such certificates
         of NPL officers and such other documents to evidence fulfillment of the
         conditions set forth in this Section 8.2 as Buyer may reasonably
         request.

                  8.3 Conditions to the Obligations of NPL Under This Agreement.
The obligations of NPL under this Agreement shall be further subject to the
satisfaction, at or prior to the Closing, of the following conditions, any one
or more of which may be waived by Noel T. Coon on behalf of NPL and NPL
Shareholders:

                  (a) Each of the obligations of Southwest required to be
         performed by it at or prior to the Closing pursuant to the terms of
         this Agreement shall have been duly performed and complied with in all
         material respects.

                  (b) Each of the representations and warranties of Southwest
         contained in this Agreement shall be true and correct in all material
         respects as of the date of this Agreement and as of the Closing as
         though made at and as of the Closing

                                       45
<PAGE>   50

         except as to any representation or warranty which specifically relates
         to an earlier date, which shall be true and correct as of such earlier
         date, except in the case of such representations and warranties, where
         the failure to be true would not have a Material Adverse Effect on
         Southwest.

                  (c) NPL shall have received an opinion, dated the date of the
         Closing, from Thomas J. Trimble, General Counsel to Southwest,
         substantially to the effect set forth in Exhibit C hereto.

                  (d) Southwest shall have furnished NPL with such certificates
         of its officers or others and such other documents to evidence
         fulfillment of the conditions set forth in this Section 8.3 as NPL may
         reasonably request.

                  (e) NPL shall have received the opinion of Deloitte & Touche
         LLP that the merger qualifies as a tax-free reorganization under
         Section 368(a)(2)(D) of the Code and the Regulations thereunder.

                  (f) Since the date of this Agreement, there shall have been no
         material adverse change in the overall financial condition, business or
         results of operations of Southwest taken as a whole. Normal seasonal
         variations are deemed not to be such a material adverse change.

         9.       Closing.

                  9.1 Date and Place. The closing of the Merger (the "Closing")
shall take place on the last day of the four or five week accounting period of
NPL, as applicable, during which all of the conditions to the obligations of the
parties hereunder, other than those to be performed at Closing, have been
satisfied or waived (the "Closing Date"); 

                                       46
<PAGE>   51

provided, however, that if the Closing Date in accordance with the foregoing
provisions of Section 9.1 would be less than five trading days prior to the end
of such accounting period, the Closing Date shall be the last day of the next
succeeding four or five week accounting period of NPL, as applicable. All
actions taken at the Closing shall be deemed to have occurred simultaneously at
the Effective Time. The Closing shall take place at the offices of Southwest in
Las Vegas, Nevada, or at such other place as the parties hereto may mutually
agree.

                  9.2 NPL's Closing Documents. At the Closing, NPL shall deliver
to Southwest:

                  (a) One or more stock certificates registered in the name(s)
         of NPL Shareholders representing all of the issued and outstanding
         shares of NPL Capital Stock, duly endorsed on behalf of NPL
         Shareholders;

                  (b) Such other documents and instruments as required by
         Section 8 to be delivered by NPL or NPL Shareholders.

                  9.3 Southwest's Closing Documents. At the Closing, Southwest
and Merger Sub shall deliver to NPL Shareholders:

                  (a) The Purchase Price of twenty-four million dollars
         ($24,000,000), payable in Southwest's Common Stock as provided for in
         this Agreement; and

                  (b) Such other documents and instruments as required by
         Section 8 to be delivered by Southwest.

         10.      Post-Closing Obligations.

                  10.1     Registration of Southwest Common Stock.


                                       47

<PAGE>   52

                  (a) As soon as practicable after the Closing Date, but in no
         event more than 30 days thereafter, Southwest shall (i) file a Form S-3
         registration statement pursuant to the Securities Act of 1933, as
         amended (the "Securities Act"), under Rule 415 thereunder, that
         includes all shares of Southwest Common Stock acquired by the NPL
         Shareholders in the Merger ("Acquired Stock"); (ii) file a request for
         exemption under Section 359-f(2) of the Fraudulent Practices Act
         ("Martin Act") with the Bureau of Investor Protection and Securities,
         Department of Law, State of New York; and (iii) take such other action
         as may be necessary to register or qualify the offer and sale of the
         Acquired Stock in any other state in which its Common Stock does not
         qualify as an "exempt security." Southwest agrees that it will use
         reasonable efforts to cause the Form S-3 registration statement to be
         declared effective by the SEC and the request for exemption to be
         granted by the Department of Law of the State of New York and to
         complete any other action which may be necessary to register or qualify
         the offer and sale of the Acquired Stock as provided in clause (iii)
         above. All expenses (exclusive of underwriting discounts and
         commissions and expenses for registration or licensing of the NPL
         Shareholders as a broker-dealer, dealer, salesperson, agent or
         associated person, if any, and fees and expenses of counsel for the NPL
         Shareholders) incurred in connection with such registration, request
         for exemption and actions shall be borne by Southwest. No transferee of
         the Acquired Stock shall be entitled to the rights and benefits of this
         Section 10.1, except transferees under Section 10.2(a)(ii).

                  (b) It shall be a condition precedent to the obligations of
         Southwest to file 



                                       48
<PAGE>   53
         a registration statement or to register any securities pursuant to
         Section 10.1(a) that the NPL Shareholders furnish Southwest such
         undertakings as may be required by the Securities Act and other
         applicable law to permit the registration statement to be filed in
         accordance with Rule 415 under the Securities Act, and such information
         regarding the NPL Shareholders, the Acquired Stock, the intended
         method(s) of disposition of such securities and such other information
         (other than information known to Southwest with respect to contractual
         arrangements between the NPL Shareholders and Southwest) as, in the
         reasonable opinion of counsel to Southwest, is necessary to enable
         Southwest to cause such registration statement to be properly prepared
         and filed in accordance with applicable laws and to obtain acceleration
         of the effective date thereof. All underwriting discounts and
         commissions and expenses for registration or licensing of the NPL
         Shareholders as a broker-dealer, dealer salesperson, agent or
         associated person under state blue sky or securities laws, if any,
         shall be borne by the NPL Shareholders.

                  (c) Southwest agrees that it will keep each NPL Shareholder
         advised in writing as to the completion of any registrations or
         qualifications pursuant to this Section 10.1 and will, at its expense:
         (i) use reasonable efforts to keep such registrations and
         qualifications effective under the Securities Laws until such time as
         the Acquired Stock can be sold by the NPL Shareholders within the
         applicable volume limitation of Rule 144(e) or without any volume
         limitation in compliance with Rule 144(k), whichever first occurs (the
         "Restriction Lapse Date"); and (ii) furnish such number of prospectuses
         and other documents incident thereto as any NPL 



                                       49
<PAGE>   54
         Shareholder from time to time may reasonably request. If, in the
         opinion of counsel to Southwest, the Form S-3 registration statement
         filed pursuant to Section 10.1(a) cannot be maintained in effect until
         the Restriction Lapse Date, then, not later than twenty (20) days prior
         to the expiration of the effectiveness of such Form S-3 registration
         statement, Southwest shall file another Form S-3 registration statement
         covering the remaining Acquired Stock, and shall use reasonable efforts
         to cause such registration statement to be declared effective and
         maintained in effect until the Restriction Lapse Date. In connection
         therewith, Southwest shall take the same actions with respect to such
         new registration statement and the registration and qualification of
         the remaining Acquired Stock under the Securities Laws as was required
         hereunder with respect to the original Form S-3 registration statement
         and the original registration and qualification of the Acquired Stock.

                  (d) If, at any time during the effectiveness of a Form S-3
         registration statement filed hereunder, Southwest shall notify the NPL
         Shareholders that the prospectus contained therein contains an untrue
         statement of material fact or omits to state a material fact necessary
         to make the statements made therein not misleading, each NPL
         Shareholder agrees not to sell any of the Acquired Stock pursuant to
         such Form S-3 registration statement thereafter until such time as
         Southwest notifies the NPL Shareholders that such material misstatement
         or omission has been corrected through the filing of an appropriate
         supplement to such prospectus, the filing and effectiveness of an
         amendment to such registration statement, or the filing of a document
         incorporated by reference therein. Southwest 


                                       50
<PAGE>   55
         shall use its reasonable efforts to file any such required
         supplement, amendment (and to have any such amendment declared
         effective) or such document as promptly as practicable; provided,
         however, that such filing may be delayed during any period of time that
         the executive officers and directors of Southwest have been asked to
         refrain from selling, offering to sell or otherwise disposing of any
         shares of its Common Stock or contracting to sell or otherwise
         disposing of any securities convertible into or exercisable or
         exchangeable for Common Stock.

                  (e) To the extent permitted by law, Southwest will indemnify
         and hold harmless each NPL Shareholder, any underwriter (as defined in
         the Securities Act) for any such NPL Shareholder and each person, if
         any, who controls such NPL Shareholder or underwriter within the
         meaning of the Securities Act or the 1934 Act (collectively, the "NPL
         Indemnified Parties") against any losses, claims, damages, or
         liabilities (joint or several) to which they or any of them may become
         subject under the Securities Act, the 1934 Act or any other federal or
         state law (the "Securities Laws"), insofar as such losses, claims,
         damages, or liabilities (or actions in respect thereof) arise from or
         are based upon any of the following statements, omissions or violations
         (collectively, a "Violation"): (i) any untrue statement or alleged
         untrue statement of a material fact contained in such registration
         statement, including any preliminary prospectus or final prospectus
         contained therein or any amendments or supplements thereto; (ii) the
         omission or alleged omission to state therein a material fact required
         to be stated therein, or necessary to make the statements therein not
         misleading; or (iii) any violation or alleged violation by 



                                       51
<PAGE>   56
         Southwest of the Securities Laws; and Southwest will reimburse such NPL
         Indemnified Parties for any legal or other expenses reasonably incurred
         by them in connection with investigating or defending any such loss,
         claim, damage, liability or action; provided, however, that the
         indemnity agreement contained in this Section 10.1(e) shall not apply
         to amounts paid in settlement of any such loss, claim, damage,
         liability or action if such settlement is effected without the consent
         of Southwest (which consent shall not be unreasonably withheld), nor
         shall Southwest be liable in any case for any such loss, claim, damage,
         liability, or action to the extent that it arises from or is based upon
         a Violation which occurs in reliance upon and in conformity with
         written information furnished expressly for use in connection with such
         registration by any such NPL Indemnified Parties.

                  (f) To the extent permitted by law, each NPL Shareholder will
         indemnify and hold harmless Southwest, each of its directors, each of
         its officers who have signed the registration statement, each person,
         if any, who controls Southwest within the meaning of the Securities
         Act, any underwriter within the meaning of the Securities Act or the
         1934 Act for Southwest, any person who controls such underwriter, and
         any other person or entity selling securities in such registration
         statement, if any (the "Other Selling Stockholders") or any of such
         Other Selling Stockholders' directors, officers, partners, general
         partners or any person who controls such Other Selling Stockholders
         (collectively, the "Southwest Indemnified Parties") against any losses,
         claims, damages or liabilities (joint or several) to which any such
         Southwest Indemnified Parties may become subject under the Securities




                                       52
<PAGE>   57
         Laws, insofar as such losses, claims, damages or liabilities (or
         actions in respect thereto) arise from or are based upon any Violation,
         in each case to the extent (and only to the extent) that such Violation
         occurs in reliance upon and in conformity with written information
         furnished by such NPL Shareholder in connection with such registration;
         and such NPL Shareholder will reimburse any legal or other expenses
         reasonably incurred by any Southwest Indemnified Parties in connection
         with investigating or defending any such loss, claim, damage,
         liability, or action; provided, however, that the indemnity agreement
         contained in this Section 10.1(f) shall not apply to amounts paid in
         settlement of any such loss, claim, damage, liability or action if such
         settlement is effected without the consent of such NPL Shareholder,
         which consent shall not be unreasonably withheld.

                  (g) Promptly after receipt by any party entitled to
         indemnification under this Section 10.1 (an "Indemnified Party") of
         notice of the commencement of any action (including any governmental
         action ), such Indemnified Party will, if a claim in respect thereof is
         to be made under this Section 10.1 against any party required to
         indemnify such Indemnified Party (an "Indemnifying Party"), notify the
         Indemnifying Party in writing of the commencement thereof and the
         Indemnifying Party shall have the right to participate in, and, to the
         extent the Indemnifying Party so desires, jointly with any other
         Indemnifying Party similarly noticed, to assume the defense thereof
         with counsel mutually satisfactory to the parties; provided, however,
         that an Indemnified Party shall have the right to retain its own
         counsel, with the fees and expenses to be paid by the Indemnifying
         Party, if representation of such 


                                       53
<PAGE>   58
         Indemnified Party by the counsel retained by the Indemnifying Party
         would be inappropriate due to actual or potential differing interests
         between such Indemnified Party and any other party represented by such
         counsel in such proceeding. The failure to notify an Indemnifying Party
         within a reasonable time of the commencement of any such action, to the
         extent prejudicial to its ability to defend such action, shall relieve
         such Indemnifying Party of any liability to the Indemnified Party under
         this Section 10.1, but the omission to so notify the Indemnifying Party
         will not relieve it of any liability that it may have to any
         Indemnified Party otherwise than under this Section 10.1.

                  10.2     Restrictions on Sale of Acquired Stock.

                  (a) For a period of two years from the Closing Date, Noel T.
         Coon agrees that he will not sell, dispose of or otherwise transfer
         more shares of Acquired Stock than he would be permitted to sell under
         the volume limitations of Rule 144 of the Securities Act as in effect
         on the date hereof, assuming that such volume limitation provisions of
         Rule 144 would be fully applicable to sales of Acquired Stock by Noel
         T. Coon for the duration of such two-year period. Notwithstanding the
         foregoing, to the extent permitted by applicable law, (i) Noel T. Coon
         shall be permitted to sell any amount of Acquired Stock held by him if
         (A) the most recent closing per share price of Southwest Common Stock
         prior to such sale as reported by the principal exchange on which such
         Common Stock is listed shall be less than $10 or (B) if Southwest
         publicly announces a plan or other agreement or arrangement providing
         for the merger of Southwest with or into another entity, the
         acquisition or other sale 


                                       54
<PAGE>   59
         of all or substantially all of the assets of Southwest (except for
         PriMerit Bank) by another entity or any other reorganization or
         business combination in which the Acquired Stock will be converted into
         cash or the securities of another person (collectively, an
         "Acquisition"); provided that if any Acquisition is submitted to a vote
         of the stockholders of Southwest, Noel T. Coon agrees to vote any
         shares of Acquired Stock he holds on the record date for determining
         stockholders entitled to vote on the Acquisition on a pro-rata basis
         with all other shareholders; and (ii) Noel T. Coon shall be permitted
         to transfer Acquired Stock by donation to any trust, foundation or
         charitable organization so long as such entity agrees to be bound by
         the provisions of Sections 10.2(b) and (c) hereof, in which event any
         sales of Acquired Stock by such entities shall be aggregated with any
         sales by Noel T. Coon in determining compliance herewith.

                  (b) Noel T. Coon agrees not to sell, either directly or
         indirectly, during any three-month period more than 240,000 shares of
         Acquired Stock to any one person or group, other than a broker-dealer
         who acquires the Acquired Stock for resale to any other person or group
         in a transaction which would not violate these provisions. Unless he
         has actual knowledge to the contrary, Noel T. Coon shall be entitled to
         rely upon a written representation from a purchaser that it is not
         acquiring the Acquired Stock in concert with any other person or with a
         view to resale in violation of these restrictions.

                  (c) The Acquired Stock acquired by Noel T. Coon shall bear the
         following legend:



                                       55
<PAGE>   60
                           THESE SECURITIES ARE SUBJECT TO RESTRICTIONS ON
                  TRANSFERABILITY AND RESALE AND MAY NOT BE TRANSFERRED OR
                  RESOLD EXCEPT AS PERMITTED UNDER THE SECURITIES ACT OF 1933,
                  AS AMENDED, AND APPLICABLE STATE SECURITIES LAWS, PURSUANT TO
                  REGISTRATION OR EXEMPTION. THESE SECURITIES ARE FURTHER
                  SUBJECT TO RESTRICTIONS ON TRANSFER SET FORTH IN THAT CERTAIN
                  MERGER AGREEMENT DATED AS OF NOVEMBER 13,1995.

                  (d) The Acquired Stock acquired by William L. Johnson and
         Michael J. Kemper shall bear the following legend:

                           THESE SECURITIES ARE SUBJECT TO RESTRICTIONS ON
                  TRANSFERABILITY AND RESALE AND MAY NOT BE TRANSFERRED OR
                  RESOLD EXCEPT AS PERMITTED UNDER THE SECURITIES ACT OF 1933,
                  AS AMENDED, AND APPLICABLE STATE SECURITIES LAWS, PURSUANT TO
                  REGISTRATION OR EXEMPTION THEREFROM.

                  This legend shall also appear on any Acquired Stock
         transferred by either Mr. Johnson or Mr. Kemper to a family trust or
         foundation.

         11.      Termination, Amendment and Waiver.

                  11.1 Termination. This Agreement may be terminated at any time
prior to the Closing, whether before or after approval of the Merger by the
governmental agencies:

                  (a) By mutual written consent of Southwest and Noel T. Coon
         (on behalf of NPL and NPL Shareholders);

                  (b) By either Southwest or Noel T. Coon (on behalf of NPL and
         NPL Shareholders) if all pre-closing conditions are not satisfied on or
         prior to May 15, 1996, unless (i) the failure of such occurrence shall
         be due to the failure of the party



                                       56
<PAGE>   61
         seeking to terminate this Agreement to perform or observe its
         agreements and conditions set forth herein to be performed or observed
         by such party at or before the Closing; or (ii) Southwest and Noel T.
         Coon (on behalf of NPL and NPL Shareholders) mutually agree to extend
         the time;

                  (c) By Southwest (i) if at the time of such termination there
         shall have been a material adverse change in the financial condition,
         business or operations of NPL taken as a whole from that set forth in
         the audited financial statements for the year ended December 31, 1994,
         it being understood that any of the matters set forth in NPL's
         Disclosure Schedules as of the date of this Agreement are not deemed to
         be a material adverse change for purposes of this paragraph (c); or
         (ii) if there shall have been any material breach of any covenant of
         NPL hereunder and such breach shall not have been remedied within 45
         days after receipt by NPL of notice in writing from Southwest
         specifying the nature of such breach and requesting that it be
         remedied;

                  (d) By Noel T. Coon (on behalf of NPL and NPL Shareholders)
         (i) if at the time of such termination there shall have been a material
         adverse change in the financial condition, business or result of
         operations of Southwest taken as a whole from that set forth in the
         audited financial statements for the year ended December 31, 1994; of
         (ii) if there shall have been any material breach of any covenant of
         Southwest hereunder and such breach shall have not been remedied within
         45 days after receipt by Southwest of notice in writing from NPL
         specifying the nature of such breach and requesting that it be
         remedied.


                                       57
<PAGE>   62
                  11.2 Amendment, Extension and Waiver. Subject to applicable
law, at any time prior to the consummation of the Merger, the parties may (a)
amend this Agreement, (b) extend the time for the performance of any of the
obligations or other acts of any other party hereto, (c) waive any inaccuracies
in the representations and warranties of any other party contained herein or in
any document delivered pursuant hereto, or (d) waive compliance with any of the
agreements or conditions contained herein. This Agreement may not be amended
except by an instrument in writing signed on behalf of each of the parties
hereto. Any agreement on the part of a party hereto to any extension or waiver
shall be valid only if set forth in an instrument in writing signed on behalf of
such party, but such waiver or failure to insist on strict compliance with such
obligation, covenant, agreement or condition shall not operate as a waiver of,
or estoppel with respect to, any subsequent or other failure.

         12.      Expenses.

                  (a) All expenses incurred by or on behalf of NPL in connection
         with the negotiation, authorization, preparation, execution and
         consummation of this Agreement (including the costs of complying with
         any covenants or conditions to Closing) and the transactions
         contemplated hereby (other than expenses incurred in connection with
         the operation of NPL in the ordinary course which would have been
         incurred notwithstanding the transactions contemplated hereby or
         thereby), including, without limitation, all fees and expenses of
         agents, representatives, accountants, investment bankers and counsel
         employed by NPL shall be borne solely by Noel T. Coon, except that NPL
         may pay up to $240,000 in 1995 and up


                                       58
<PAGE>   63
         to $160,000 in 1996 based on services rendered on the basis of the
         usual and customary hourly rates previously charged by its attorneys
         and accountants.

                  (b) All expenses incurred by or on behalf of Southwest in
         connection with the negotiation, authorization, preparation, execution
         and consummation of this Agreement and the transactions contemplated
         hereby and thereby, including, without limitation, all fees and
         expenses of agents, representatives, accountants, investment bankers
         and counsel employed by Southwest, shall be borne solely by Southwest.

         13. Indemnification.

                  13.1 Indemnification of Southwest. NPL Shareholders shall
indemnify Southwest and its officers, directors and subsidiaries from and
against all claims, losses, damages, costs, assessments, judgments, awards,
liabilities and expenses (including, without limitation, reasonable costs and
expenses of litigation, and, to the extent permitted by law, reasonable
attorneys' fees) incurred by Southwest or its officers, directors, agents or
subsidiaries by reason of:

                  (a) The untruthfulness or inaccuracy of any of the
         representations or warranties of NPL or the breach of any obligations
         of NPL contained in this Agreement.

                  (b) Any judgments, fines, penalties, settlement payments,
         settlement costs and attorneys' fees and expenses and interest related
         thereto entered, paid or incurred by NPL after July 31, 1995 in
         connection with any currently existing but undisclosed actions, suits,
         claims, inquiries, proceedings or investigations before



                                       59
<PAGE>   64
         any court, commission, bureau, regulatory, administrative or
         governmental agency, arbitrator body or authority in excess of $10,000
         in the aggregate and not reimbursed by insurance.

                  (c) Any liability of NPL, other than liabilities for benefits
         or contributions payable under or pursuant to Benefit Plans provided
         the existence of such liabilities does not violate any representation
         or warranty in Section 4.12(c) which is attributable to facts existing,
         or actions taken (or omissions occurring) prior to the Closing, which
         liability arises under ERISA due to (i) the acts or omissions of NPL
         with respect to the Benefit Plans or (ii) the acts or omissions of
         fiduciaries of the Benefit Plans to whom NPL is obligated to provide
         indemnification by contract or otherwise.

                  (d) The aggregate liability of NPL Shareholders, if any, shall
         be limited to a maximum of one million two hundred thousand dollars
         ($1,200,000) and the NPL Shareholders shall only be liable to the
         extent that indemnifiable amounts hereunder exceed, in the aggregate,
         two hundred forty thousand dollars ($240,000). The NPL Shareholders'
         share of any liability shall be in proportion to their respective NPL
         stock ownership at Closing and may be paid either in cash or in
         Southwest stock valued at the same price as at the Closing.

                  13.2 Southwest's Indemnification. Southwest shall indemnify
NPL and NPL Shareholders from and against all claims, losses, damages, costs,
assessments, judgments, awards, liabilities and expenses (including, without
limitation, costs and expenses of litigation and, to the extent permitted by
law, reasonable attorneys' fees)


                                       60
<PAGE>   65
incurred by NPL or NPL Shareholders by reason of the untruthfulness or
inaccuracy of any of Southwest's representations or warranties or the breach of
any Southwest obligations contained in this Agreement.

                  13.3     Claims for Indemnity.

                  (a) Making of Claims for Indemnity. A claim for indemnity
         under this Agreement may be made by the indemnified party any time
         prior to one year after the Closing. Except for a claim for fraud, a
         claim for indemnity under this Agreement shall be the exclusive remedy
         of any indemnified party against any indemnifying party with respect to
         any claims, losses, damages, costs, assessments, judgments, awards,
         liabilities and expenses which arise out of or in any way relate to any
         act or omission in connection with the negotiation, execution, delivery
         or performance of this Agreement. Notwithstanding the foregoing, an
         indemnified party may pursue any available legal proceedings to enforce
         the obligation of an indemnifying party if such indemnifying party
         refuses or fails to perform such obligation, but the recovery in any
         such proceedings shall be limited to amounts which the indemnified
         party would have been entitled to be paid by the indemnifying party
         hereunder, together with the costs and expenses of such enforcement
         proceeding as provided in Section 14.10 hereof.

                  In the event that any such claim is made within such
         prescribed period, the indemnity relating to such claim shall survive
         until such claim is resolved. Claims not made within the applicable
         period shall not be indemnified hereunder. Each written notice of a
         claim for indemnity shall set forth in reasonable detail the basis


                                       61
<PAGE>   66
         upon which such claim for indemnity is made.

                  (b) Conduct of Lawsuits. In the event that any person or
         entity not a party to this Agreement shall make any demand or claim or
         file or threaten to file any lawsuit, which demand, claim or lawsuit
         may result in any loss, cost or expense subject to indemnification
         under this Agreement, then the indemnified party shall provide written
         notice of such demand, claim or lawsuit to the indemnifying party as
         soon as is reasonably practicable but, in any event, within five (5)
         days after discovery or receipt of such demand, claim or lawsuit (but
         failure to notify within such time period shall not rescind or revoke
         the indemnifying party's obligation to indemnify but shall only reduce
         the amount of the indemnification to the extent that the indemnifying
         party is damaged by such delay), and the indemnifying party shall have
         the option, at its cost and expense, to defend itself or to retain
         counsel for the indemnified party to defend any such demand, claim or
         lawsuit. In the event that the indemnifying party shall fail to respond
         to the indemnified party within five days after receipt of such written
         notice of any such demand, claim or lawsuit, then the indemnified party
         may retain counsel and conduct the defense of such demand, claim or
         lawsuit as it may in its reasonable discretion deem proper, at the
         reasonable cost and expense of the indemnifying party, subject,
         however, to the indemnifying party's right to intervene in such defense
         at any time upon the giving of reasonable notice. The indemnified party
         shall use its best reasonable efforts to cooperate and assist the
         indemnifying party in defending any such demand, claim or lawsuit,
         which shall include, but not be limited to, the pursuit of all
         cross-


                                       62
<PAGE>   67
         claims and counterclaims associated therewith. In effecting the
         settlement of any such demand, claim or lawsuit, an indemnified party
         shall act in good faith, shall consult with the indemnifying party, and
         shall enter into only such settlement as the indemnifying party shall
         approve, which approval will not be unreasonably withheld and will be
         implied if the indemnifying party does not respond within 15 days of
         its receipt of the notice of such settlement offer. 

         14. Miscellaneous.

                  14.1 Non-Compete Agreements. Noel T. Coon agrees that he will
not, directly or indirectly, engage in competition with NPL or the Surviving
Corporation in the states where either is now operating or has current plans to
operate at the time of Closing for a period of four years following the Closing.
William L. Johnson and Michael J. Kemper each agrees that he will not, directly
or indirectly, engage in competition with NPL or the Surviving Corporation in
the states where Surviving Corporation is operating at the time William L.
Johnson or Michael J. Kemper, respectively, leaves the employment of the
Surviving Corporation (except for the state of Michigan as to Mr. Johnson) for a
period of two years following termination of his employment. The foregoing
provisions shall apply to competition in any manner whatsoever including but not
limited to, as an employee, independent contractor, consultant, owner, manager,
shareholder, director, officer, principal, agent or trustee of or for any person
or entity engaged in a business the same as or similar to that of NPL or
Surviving Corporation or for their own account. Each NPL Shareholder further
agrees that the foregoing non-competition provisions are reasonable as applied
to him, would not impose any undue hardship on him if in force and is no wider


                                       63
<PAGE>   68
in scope than necessary to afford reasonable protection to Southwest and
Surviving Corporation. This section becomes effective upon the Closing and at
that time supersedes the non-compete agreements contained in the existing
Johnson and Kemper employment agreements.

                  14.2 NPL Promissory Notes to Noel T. Coon. The outstanding
promissory notes in the approximate amount of $3.9 million from NPL to Noel T.
Coon may be paid off in full by NPL prior to the Closing provided that NPL has
adequate cash and credit to continue its operations in its usual and customary
manner.

                  14.3 Survival. Subject to Section 13.3, the respective
representations and warranties, covenants and agreements set forth in this
Agreement and all Disclosure Schedules shall survive the Closing.

                  14.4 Notices. All notices, requests, claims, demands or other
communica tions hereunder shall be in writing and shall be given (and shall be
deemed to have been duly received if so given) by delivery, by registered or
certified mail (return receipt requested) or by cable, telecopier, or telex to
the respective parties as follows:

                  (a)      If to Southwest, to:

                           Michael O. Maffie
                           President and Chief Executive Officer
                           Southwest Gas Corporation
                           5241 Spring Mountain Road
                           P.O. Box 98510
                           Las Vegas, Nevada 89193-8510
                           Telephone: (702)876-7250
                           Telecopier: (702)876-7037


                                       64
<PAGE>   69
                           With a copy to:

                           Thomas J. Trimble
                           Senior Vice President/General Counsel
                             and Corporate Secretary
                           Southwest Gas Corporation
                           5241 Spring Mountain Road
                           P.O. Box 98510
                           Las Vegas, Nevada 89193-8510
                           Telephone: (702)876-7189
                           Telecopier: (702)876-7037

                  (b)      If to NPL, to:

                           Noel T. Coon
                           10840 East Candlewood Drive
                           Scottsdale, Arizona 85255
                           Telephone: (602)585-9803

                           With a copy to:

                           William L. Johnson
                           12500 Summit Street
                           Kansas City, Missouri 64145
                           Telephone: (816)942-6069

or such other address as shall be furnished in writing by any party to the
others in accordance herewith, except that notices of change of address will
only be effective upon receipt.

                  14.5 Parties in Interest. This Agreement shall be binding upon
and shall inure to the benefit of the parties hereto and their respective
successors and assigns; provided, however, that neither this Agreement nor any
of the rights, interests or obligations hereunder shall be assigned by any party
hereto without the prior written consent of the other parties. Nothing in this
Agreement is intended to confer, expressly


                                       65
<PAGE>   70
or by implication, upon any other person any rights or remedies under or by
reason of this Agreement.

                  14.6 Entire Agreement. This Agreement, including the documents
and other writings referred to herein or delivered pursuant hereto, contains the
entire agreement and understanding of the parties with respect to its subject
matter. There are no restrictions, agreements, promises, warranties, covenants
or undertakings between the parties other than those expressly set forth herein
or therein. This Agreement supersedes all prior agreements and understandings
between the parties, both written and oral, with respect to its subject matter.

                   14.7 Counterparts. This Agreement may be executed in one or
more counterparts all of which shall be considered one and the same agreement
and each of which shall be deemed an original.

                   14.8 Governing Law. This Agreement, in all respects,
including all matters of construction, validity and performance, is governed by
the internal laws of the state of Nevada applicable to contracts executed and
delivered in Nevada by citizens of such state, to be performed wholly within
such state without giving effect to the principles of conflicts of laws thereof.
This Agreement is being delivered in Las Vegas, Nevada.

                   14.9 Headings. The Section headings contained in this
Agreement are for reference purposes only and shall not affect in any way the
meaning or interpretation of this Agreement.

                   14.10 Enforcement Costs. In the event of litigation or other
proceeding to enforce this Agreement, the prevailing party or parties shall be
entitled to recover


                                       66
<PAGE>   71
reasonable costs and attorneys' fees to be set by the court and not by the jury.

                   IN WITNESS WHEREOF, the parties hereto have executed this
Agreement this 13th day of November, 1995.

NORTHERN PIPELINE                         NPL SHAREHOLDERS
CONSTRUCTION CO.,
a Minnesota corporation

                                          /s/ NOEL T. COON
                                          ----------------------------------
                                          Noel T. Coon

By:    /s/ WILLIAM L. JOHNSON
     ------------------------------
       William L. Johnson
                                          /s/ ALEXA S. HIGASHI
                                          ----------------------------------
Title: Chief Executive Officer            Alexa S. Higashi, his wife

Attest:  /s/ ROBERT DIGAN                 /s/ WILLIAM L. JOHNSON
        ---------------------------       ----------------------------------
         Robert Digan                     William L. Johnson

Title: Assistant Secretary
                                          /s/ JUDY JOHNSON
                                          ----------------------------------
                                          Judy Johnson, his wife

                                          /s/ MICHAEL J. KEMPER
                                          ----------------------------------
                                          Michael J. Kemper

                                          /s/ FRANCES KEMPER
                                          ----------------------------------
                                          Frances Kemper, his wife

                                          SOUTHWEST GAS CORPORATION, a
                                          California corporation

                                          By     /s/ MICHAEL O. MAFFIE
                                             -------------------------------
                                                   Michael O. Maffie

                                          Title:   President and Chief Executive
                                                      Officer


                                       67
<PAGE>   72
                                    ATTEST:     /s/ THOMAS J. TRIMBLE
                                             ---------------------------------
                                                  Thomas J. Trimble

                                    TITLE: Senior Vice President/General
                                           Counsel and Corporate Secretary

                                    SOUTHWEST GAS CORPORATION
                                      OF ARIZONA, a Nevada corporation

                                    By:      /s/ MICHAEL O. MAFFIE
                                         -------------------------------------
                                                Michael O. Maffie

                                    TITLE: President and Chief Executive
                                           Officer

                                    ATTEST:     /s/ THOMAS J. TRIMBLE
                                             ---------------------------------
                                                  Thomas J. Trimble

                                    TITLE: Senior Vice President/General
                                              Counsel and Corporate Secretary


                                       68
<PAGE>   73
                                    EXHIBIT B

Ladies and Gentlemen:

         This firm has acted as counsel for Northern Pipeline Construction Co.,
a Minnesota corporation ("NPL"), and NPL Shareholders in connection with the
proposed acquisition of NPL by Southwest Gas Corporation, a California
corporation ("Southwest"), pursuant to the Merger Agreement between Southwest
and Southwest Gas Corporation of Arizona, a Nevada corporation (the "Merger
Sub"), and NPL and NPL Shareholders dated as of November 13, 1995 (the
"Agreement"). This opinion is delivered to you pursuant to Section 8.2 of the
Agreement. Unless otherwise defined herein, all capitalized terms used in this
opinion shall have the meanings attributed to them in the Agreement.

         In our capacity as counsel for NPL and NPL Shareholders and for
purposes of this opinion, we have made those examinations and investigations of
the local and factual matters we deemed advisable, and have examined the
originals, or copies identified to our satisfaction as being true copies of the
originals, of the certificates, documents, corporate records, and other
instruments which we, in our judgment, have considered necessary or appropriate
to enable us to render the opinion expressed below. For these purposes, we have,
without independent investigation or confirmation, relied upon certificates
provided by public officials and officers of NPL as to certain factual matters
including those certificates described below. In the course of our examinations
and investigations we have assumed the genuineness of all signatures on original
documents, and the due execution and delivery of all documents requiring due
execution and delivery for the effectiveness thereof.

         Based upon and subject to the foregoing and in reliance thereon, and
subject to the assumptions, exceptions and qualifications set forth herein, it
is our opinion that:

                  1. NPL is a corporation duly organized, validly existing and
         in good standing under the laws of Minnesota, with the corporate powers
         and authority to own, lease and operate all of its properties and
         assets and to carry on its business as presently being conducted;

                  2. NPL is duly licensed and qualified to do business as a
         foreign corporation and is in good standing in Arizona, Colorado,
         Illinois, Kansas, Missouri, Montana, Nebraska, Nevada, New Jersey,
         Pennsylvania, Utah, Washington, and Wisconsin and in any other


<PAGE>   74


To _________________
Date
Page 2

         jurisdiction in which, to the best of our knowledge after due inquiry,
         the nature of the business conducted by it makes such licensing or
         qualification necessary and where the failure to be so qualified would,
         individually or in the aggregate, have a Material Adverse Effect;

                  3. NPL has the corporate Power and authority to consummate the
         transactions contemplated by the Agreement, and NPL has duly taken all
         requisite corporate action to authorize, execute and deliver the
         Agreement and perform the transactions contemplated by the Agreement.
         The Agreement and appropriate Exhibits thereto have been duly executed
         and delivered by NPL and constitute valid, binding and enforceable
         obligations of NPL and NPL Shareholders;

                  4. The authorized capital stock of NPL consists solely of
         15,000 shares of Common Stock, par value $10.00 per share, of which
         ________ shares are issued and outstanding. All shares of the
         outstanding capital stock of NPL have been duly authorized and validly
         issued and are fully paid and nonassessable. After due inquiry, other
         than as described in the Agreement, we are not aware of any
         reservations for the issuance of NPL Common Stock or any outstanding
         subscriptions, options, warrants, calls, commitments, or agreements of
         any character calling for the transfer, purchase, or issuance of any
         shares of its Common Stock or any securities representing the right to
         purchase or otherwise receive any shares of its Common Stock or any
         securities convertible into or representing the right to purchase or
         subscribe to any such shares;

                  5. On the Closing Date and prior to the consummation of the
         transactions contemplated by the Agreement, the NPL Shareholders were
         the record owners of all of the issued and outstanding shares of NPL's
         Common Stock;

                  6. Neither the execution and delivery by NPL of the Agreement,
         nor the consummation of the transactions contemplated thereby, will (i)
         constitute a breach or violation of the Articles of Incorporation or
         Bylaws of NPL, (ii) violate any statute, code, ordinance, rule,
         regulation, judgment, order, writ, decree or injunction, after due
         inquiry, known to us to be applicable to NPL, or any of its respective
         properties or assets, or (iii) to the best of our knowledge after due
         inquiry, violate, conflict with, result in a breach of any provisions
         of,


<PAGE>   75
To _________________
Date
Page 3

         constitute a default (or an event which, with notice or lapse of time,
         or both, would constitute a default) under, result in the termination
         of, accelerate the performance required by, or result in the creation
         of any lien, security interest, charge or other encumbrance upon any of
         the properties or assets of NPL, under any of the terms, conditions, or
         provisions of any note, bond, mortgage indenture, deed of trust,
         license, lease, agreement or other instrument or obligation to which
         NPL is a party, or by which it or any of its properties or assets may
         be bound or affected, except where such violations, conflicts,
         breaches, defaults, termination, accelerations and encumbrances would
         not have a Material Adverse Effect, nor prevent the consummation of the
         transactions contemplated by the Agreement.

                  7. There are no pending or, to the best of our knowledge after
         due inquiry, threatened actions, suits, claims inquiries, proceedings
         or investigations involving NPL before any court, commission, bureau,
         regulatory, administrative or governmental agency, arbitrator, body or
         authority that could have a Material Adverse Effect or which affect
         NPL's obligations under or purport to affect the legality, validity or
         enforceability of the Agreement or the transactions contemplated
         thereby;

                  8. Assuming due authorization of the Merger by all necessary
         corporate proceedings on the part of Southwest and Merger Sub and that
         Southwest and Merger Sub have taken all action required to be taken by
         them prior to the Closing Date, in accordance with the provision of the
         Agreement, the Merger will be validly consummated in accordance with
         the Agreement and Minnesota law, and each outstanding share of NPL
         Common Stock, including shares issued upon exercise of options to
         purchase NPL Common Stock which will have been exercised, prior to the
         Closing will be converted as provided in the Agreement; and

                  9. All governmental consents and approvals required to be
         obtained by NPL in order to permit the consummation by it of the
         Agreement and transactions contemplated thereby have been obtained, and
         all filings required to be made by NPL in order to permit such
         consummation have been made.

         We express no opinion with respect to the laws of any jurisdiction,
other than the United States and Arizona, the general corporate law of the State
of 


<PAGE>   76
To _________________
Date
Page 4


Minnesota and with respect to the opinion set forth in paragraph 2 only the laws
of the States of Colorado, Illinois, Kansas, Missouri, Montana, Nebraska,
Nevada, New Jersey, Pennsylvania, Utah, Washington and Wisconsin. The Agreement
is governed by Nevada law and we have assumed with your consent that, to the
extent applicable to our opinions set forth herein, Nevada law is the same as
Arizona law, to the extent Nevada law is controlling.

         With respect to our opinion relating to the enforceability of any
agreement or contract, our opinion is qualified in that enforceability may be
limited by the application of bankruptcy, insolvency, reorganization,
moratorium, or similar laws relating to or affecting creditors' rights generally
(including, without limitation, fraudulent conveyance laws), and by general
principles of equity, including, without limitation, concepts of materiality,
reasonableness, good faith and fair dealing and the possible unavailability of
specific performance or injunctive relief, regardless of whether considered in a
proceeding in equity or at law.

         This opinion is being delivered to you for your sole use and benefit in
connection with the acquisition of NPL by Southwest pursuant to the Agreement
and may not be relied upon by, nor may copies be delivered to, any other person
without our prior written consent. This opinion is given as of the date hereof
and we assume no obligation to advise you of changes that may hereinafter be
brought to our attention.

                                                     Very truly yours,



<PAGE>   1
                            SOUTHWEST GAS CORPORATION
                     LIST OF SUBSIDIARIES OF THE REGISTRANT
                              AT DECEMBER 31, 1995

<TABLE>
<CAPTION>
                                                 STATE OF INCORPORATION
SUBSIDIARY NAME                                   OR ORGANIZATION TYPE
- ---------------                                   --------------------

<S>                                            <C>    
LNG Energy, Inc.                                         Nevada
Paiute Pipeline Company                                  Nevada
PriMerit Bank                                            Nevada
Southwest Gas Corporation of Arizona                     Arizona
Southwest Gas Transmission Company                 Partnership between
                                                Southwest Gas Corporation
                                               and Utility Financial Corp.
Utility Financial Corp.                                  Nevada
</TABLE>

                                PRIMERIT BANK
                                 SUBSIDIARIES
                             AT DECEMBER 31, 1995

<TABLE>
<S>                                                    <C>
First Nevada, Ltd.                                       Nevada
Home Trustee, Inc.                                       Nevada
Nevada Vistas Corporation                                Nevada
Nevada High Country II Corp                              Nevada
Trans-Pacific Funding Corp                             California
Nevada Karmlco                                         California
Nevada Los Colinas                                       Nevada
Nevada Verdemont                                       California  
First Nevada Company                                     Nevada
Nevada Equities, Ltd.                                    Nevada
BSF Trustee, Inc.                                        Nevada
Nevada Laurel Corporation                                Nevada
Nevada Capital, Ltd.                                   California
PriMerit Investor Services                               Nevada
Nevada Victorville Corporation                         California
Nevada Elsinore Corporation                            California
Nevada La Cresta Corporation                           California
</TABLE>


                                  Exhibit 21.01



<PAGE>   1
                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

         As independent public accountants, we hereby consent to the
incorporation of our report dated February 7, 1996 included in this Form 10-K,
into Southwest Gas Corporation's previously filed registration statements on
Form S-8 (File No. 33-35737), Form S-8 (File No. 33-58135), Form S-3 (File No.
33-58137) and Form S-3 (File No. 33-62143).

                                                     ARTHUR ANDERSEN LLP

Las Vegas, Nevada
March 26, 1996

                                  Exhibit 23.01



<TABLE> <S> <C>

<ARTICLE> UT
<LEGEND>
This schedule contains summary financial information extracted from Southwest
Gas Corporation's Form 10-K for the year ended December 31, 1995, and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1995             DEC-31-1994
<PERIOD-END>                               DEC-31-1995             DEC-31-1994
<BOOK-VALUE>                                  PER-BOOK                PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    1,137,750               1,035,916
<OTHER-PROPERTY-AND-INVEST>                     35,128                  34,195
<TOTAL-CURRENT-ASSETS>                         317,222                 339,177
<TOTAL-DEFERRED-CHARGES>                        42,427                  44,294
<OTHER-ASSETS>                                       0                       0
<TOTAL-ASSETS>                               1,532,527               1,453,582
<COMMON>                                        26,097                  22,912
<CAPITAL-SURPLUS-PAID-IN>                      312,631                 273,217
<RETAINED-EARNINGS>                             17,322                  52,427
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 356,050                 348,556
                                0                   3,200
                                          0                       0
<LONG-TERM-DEBT-NET>                           607,945                 678,263
<SHORT-TERM-NOTES>                              37,000                  92,000
<LONG-TERM-NOTES-PAYABLE>                            0                       0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0                       0
<LONG-TERM-DEBT-CURRENT-PORT>                  120,000                   5,000
                            0                     800
<CAPITAL-LEASE-OBLIGATIONS>                          0                       0
<LEASES-CURRENT>                                     0                       0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 411,532<F1>             325,763<F2>
<TOT-CAPITALIZATION-AND-LIAB>                1,532,527               1,453,582
<GROSS-OPERATING-REVENUE>                      563,502                 599,553
<INCOME-TAX-EXPENSE>                               839                  14,595
<OTHER-OPERATING-EXPENSES>                     505,090                 510,863
<TOTAL-OPERATING-EXPENSES>                     505,090                 510,863
<OPERATING-INCOME-LOSS>                         58,412                  88,690
<OTHER-INCOME-NET>                              (1,565)<F3>             (1,110)
<INCOME-BEFORE-INTEREST-EXPEN>                  56,847                  87,580
<TOTAL-INTEREST-EXPENSE>                        53,354                  49,461
<NET-INCOME>                                   (14,882)<F4>             26,301<F5>
                        307                     510
<EARNINGS-AVAILABLE-FOR-COMM>                  (15,189)                 25,791
<COMMON-STOCK-DIVIDENDS>                        19,826                  17,125
<TOTAL-INTEREST-ON-BONDS>                       53,354<F6>              49,461<F6>
<CASH-FLOW-OPERATIONS>                          97,754                  84,074
<EPS-PRIMARY>                                    (0.66)<F7>               1.22<F8>
<EPS-DILUTED>                                    (0.66)                   1.22
<FN>
<F1>Includes: trust originated preferred securities of $60,000; current
liabilities, net of current long-term debt maturities and short-term debt, of
$173,211; and deferred income taxes and other deferred credits of $178,321.
<F2>Includes: current liabilities, net of current long-term debt maturities and
short-term debt, of $157,563; and deferred income taxes and other deferred
credits of $168,200.
<F3>Includes distributions related to trust originated preferred securities of
$913.
<F4>Includes income from continuing operations of $2,654 and a loss from 
discontinued operations of $17,536. This loss is comprised of a loss from 
discontinued operations of $4,513, net of taxes, and a loss from disposal of 
discontinued segment of $13,023, including tax expense.
<F5>Includes income from continuing operations of $23,524 and income from 
discontinued operations of $2,777. 
<F6>Represents interest costs for short and long-term debt net of the cost to
finance utility construction (AFUDC).
<F7>Earnings per share attributed to continuing operations was $0.10, and EPS
attributed to discontinued operations was $(0.76).
<F8>Earnings per share attributed to continuing operations was $1.09, and EPS
attributed to discontinued operations was $0.13.
</FN>
        

</TABLE>


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