QUESTAR CORPORATION
                EXECUTIVE INCENTIVE RETIREMENT PLAN
         (As Amended and Restated effective May 19, 1998)

1.   PURPOSE

     The Executive Incentive Retirement Plan (hereinafter referred to 
as the Plan) is intended to enable Questar Corporation and its 
subsidiaries to meet competition and to attract and retain key 
management personnel by helping such individuals to maintain their 
standards of living at retirement and providing for their families in 
the event of their death. 

2.   DEFINITIONS

     Unless otherwise required by the context, the terms used herein 
shall have the meanings set forth below.

     "Board" shall mean the Board of Directors of Questar Corporation.

     "Company" shall mean Questar Corporation and any other 
organization controlled by or controlling Questar Corporation, or any 
successor thereto.

     "Compensation" of a Nominee shall mean the total base salary paid 
to the Nominee by the Company and all Participating Corporations, but 
excluding any other forms of additional compensation such as bonuses, 
contributions made to or under any form of employee benefit program, 
or ordinary income recognized as a result of exercising stock options.  
Compensation shall include any base salary deferred by the Nominee 
under the Company's tax-qualified plans or nonqualified plans and any 
base salary reductions under the Company's Cafeteria Plan.  
Compensation during a period of leave of absence approved by the Board 
shall be assumed to be equal to the Nominee's full time earnings 
immediately prior to such leave.

     "Dependent" shall mean the unmarried natural or adopted child of 
the Nominee prior to the attainment of age 18 by such child, provided 
such child is a dependent of such Nominee as defined by the Internal 
Revenue Service at the time of death of the Nominee.

     "Family Protection Benefit" shall mean the benefit payments 
defined in Section 7 of this Plan.

     "Final Average Earnings" shall mean the highest average annual 
Compensation paid to the Nominee during any period of 72 consecutive 
semi-monthly pay periods of employment with the Company and/or any 
Participating Corporation.

     "Nominee" shall mean an employee nominated for participation in 
the Plan who agrees to participate by signing an agreement.

     "Participating Corporation" shall mean an organization 
participating in the Plan in accordance with the provisions of Section 
3.

     "Participating Service Units" shall mean a measure of employment 
with the Company determined as follows:  each Nominee shall be 
credited with a total of 100 Participating Service Units for each full 
calendar year of employment, disability leave, or approved absence 
with the Company and/or any Participating Corporation (prorated for 
any calendar year in which such Nominee has less than a full calendar 
year of employment, disability leave, or approved absence).

     "Regular Retirement Plan" shall mean any retirement plan 
maintained by the Company that qualifies as a defined benefit plan 
under the terms of ERISA.

     "Retirement Benefits" shall mean the benefit payments defined in 
Section 5 and Section 6 of the Plan.

     "Spouse" shall mean the person to whom the Nominee is legally 
married continuously for one year immediately prior to the date of the 
Nominee's death if death occurs prior to the Nominee's retirement or 
continuously for one year immediately prior to the Nominee's 
retirement date if the Nominee's death occurs after retirement.  The 
term spouse shall not include any person from whom the Nominee is 
divorced after his/her retirement.

3.   PARTICIPATING CORPORATIONS

     The benefits provided to Nominees and their families by the Plan 
depend upon the employment and compensation histories of the Nominees.

     The Plan will recognize all employment with the Company including 
periods of employment with a predecessor organization immediately 
prior to the acquisition of control of such organization by the 
Company.  

     Compensation paid directly by the Company to the Nominee will be 
recognized for the purpose of determining the benefit payable under 
this Plan.  The amount of Compensation paid by any other organization 
affiliated with the Company will be recognized only if the Company's 
Board designates such organization as an eligible Participating 
Corporation, and the Board of Directors of such designated 
organization adopts a resolution agreeing to participate under the 
terms of the Plan.  A Participating Corporation may revoke future 
participation at any time, except, however, that such revocation shall 
not deprive any Nominee, Spouse, or Dependent of benefits that such 
Nominee, Spouse or Dependent is then eligible to receive.

     The benefits payable to any Nominee or to the Nominee's family 
that depend upon amounts of Compensation paid by two or more 
Participating Corporations shall be allocated among them.

     The Company may provide a funding source for benefits payable 
under the Plan by purchasing insurance policies on the lives of 
Nominees.  The premiums, cash values, loans and interest of any policy 
on the life of a Nominee whose benefits depend upon  Compensation paid 
by two or more organizations will be allocated among the Participating 
Corporations. 

4.   PARTICIPATION IN THE PLAN AND ELIGIBILITY FOR BENEFITS

     Participation in this Plan shall be limited to those key 
executive employees of the Company or its affiliates nominated prior 
to June 20, 1986, by the Company's Board  or the Board of Directors of 
a Participating Corporation.  To become eligible for Retirement 
Benefits under the Plan, a Nominee must have continued in the 
employment of the Company until completion of 15 years of service or 
the attainment of age 65, whichever first occurs.  Any Nominee who 
reaches age 65 or who has a total of 15 years of service with the 
Company (counting no single annual period of service more than once) 
and who is at such time a Nominee of more than one Participating 
Corporation, shall be eligible for Retirement Benefits as herein 
provided from all Participating Corporations having nominated such 
employee.

     The Company may impose such other terms and conditions as it 
shall deem to be desirable including but not limited to an agreement 
that the Nominee shall consult upon the request of the Company 
following retirement and shall not disclose any trade secrets or other 
confidential information and shall engage in no competitive business 
activities, directly or indirectly, after retirement.

     All Nominees who elect to participate must sign an agreement and 
consent to insurance being issued upon their lives to be paid for by 
the Company and with the Company as beneficiary and agree to terms and 
conditions above specified.  Such agreements shall not constitute an 
employment contract, and the Company may dismiss or demote such 
Nominee as an officer at any time.  The Nominee may voluntarily 
terminate employment as an officer at any time.  A Nominee who ceases 
to serve as an officer shall be terminated from this Plan and shall 
forfeit all benefit rights under this Plan unless the Nominee has 
satisfied the eligibility requirements as hereinafter provided prior 
to the date on which service as an officer ends. 

5.   RETIREMENT BENEFITS

     A Nominee who becomes eligible for retirement benefits under the 
Company's Regular Retirement Plan shall be eligible to commence 
Retirement Benefits under this Plan.  Except as set forth in Section 
6, the first payment of Retirement Benefits will be due on the first 
day of the month following retirement under the provisions of a 
Regular Retirement Plan, and payments will continue on the first of 
each month thereafter so long as the Nominee is alive.

     A Nominee who is not eligible to receive benefits under the 
Company's Regular Retirement Plan may receive Retirement Benefits 
under this Plan if declared eligible to receive such benefits by the 
Board of Directors.

     A Nominee may elect to waive any Retirement Benefits payable 
under the terms of this Plan to the extent that such benefits would be 
payable under the Company's make-up Supplemental Executive Retirement 
Plan in the absence of the Nominee's participation in this Plan.

     The basic annual retirement amount of such a Nominee shall be ten 
percent (10%) of the Final Average Earnings of the Nominee. 

6.   LUMP-SUM ELECTION

     A Nominee has a one-time election to receive the present value of 
his Retirement Benefit in a lump sum.  The Nominee shall make this 
election at least one year prior to his retirement.  The present value 
of the Retirement Benefit shall be calculated using a standard 
mortality table referred to as the "83 Group Annuity Mortality Table" 
and 80 percent of the six-month average rate for the 30-year Treasury 
bonds prior to the Nominee's retirement.  When making this election, 
the Nominee shall also indicate when the lump-sum payment shall be 
made and if it is to be made in more than one installment.  The full 
amount of any lump-sum payment, together with credited interest, must 
be paid within five years of the Nominee's retirement.  Any deferred 
payouts of lump-sum payments shall be credited with interest 
calculated at a monthly rate using the appropriate 30-year Treasury 
bond quoted in the Wall Street Journal on the first business day of 
each month.  (The appropriate 30-year Treasury bond shall be the bond 
that has the closest maturity date (by month) preceding the date on 
which the interest is to be credited.)  Any lump-sum payments that are 
not deferred shall be paid on the first business day of the month 
following the Nominee's retirement date or as soon thereafter as is 
administratively practicable.  The Nominee's spouse must consent to 
the Nominee's election to receive a lump-sum payment.  This consent 
must be in writing and must acknowledge the effect of such election.

     If the Nominee fails to timely make an election prior to his 
retirement, the Nominee shall receive monthly Retirement Benefits.

7.   FAMILY PROTECTION BENEFITS

     A Family Protection Benefit shall become payable upon the event 
that the Nominee dies in the active service of the Company or after 
retirement and leaves a surviving Spouse or Dependent.

     In the event that the Nominee dies prior to retirement and before 
having 25 years of service or satisfying the age and service 
requirements for early or normal retirement under the Company's 
Regular Retirement Plan, the amount of the Family Protection Benefit 
shall be equal to the full benefit calculated in accordance with 
Section 5 that would have been payable if the Nominee had been deemed 
to have satisfied the eligibility requirements under this Plan as of 
the date of death.  The first payment will be due on the first day of 
the month following the date of death, and payments will continue on 
the first day of each month thereafter provided that the Spouse or a 
Dependent is alive and, in the case of a Dependent, until such 
Dependent has reached his/her 18th birthday.

     In the event that the Nominee dies prior to retirement but after 
having 25 years of service or satisfying the age and service 
requirements for early or normal retirement under the Company's 
Regular Retirement Plan, the amount of the Family Protection Benefit 
shall be equal to one-half of the benefit calculated in accordance 
with Section 5 that would have been payable if the Nominee had been 
deemed to have satisfied the eligibility requirements under this Plan 
as of the date of death.  The first payment will be due on the first 
day of the month following the date of death, and payments will 
continue on the first day of the month thereafter provided that the 
Spouse or a Dependent is alive and, in the case of a Dependent, until 
such Dependent has reached his/her 18th birthday.

     In the event that the Nominee dies after retirement and did not 
elect a lump-sum, the amount of the Family Protection Benefit shall be 
equal to one-half of the Nominee's Retirement Benefits under this 
Plan.  The first payment will be due on the first day of the month 
following the date of death and payments will continue on the first of 
each month thereafter provided that the Spouse or a Dependent is alive 
and, in the case of a Dependent, until such Dependent has reached 
his/her 18th birthday.

     Family Protection Benefit payments shall be paid in full to the 
surviving Spouse or divided equally amongst those Dependents who have 
not reached their 18th birthdays in the event that there is no Spouse. 

8.   ALLOCATION OF BENEFITS

     Benefit payments from the Plan attributable to a Nominee will be 
allocated to and paid directly by the Company and the Participating 
Corporations. 

9.   FINANCING THE BENEFITS

     The Company may enter into life insurance policies on the lives 
of the Nominees to protect against the burdens of premature death and 
to provide for an orderly financing program.  The policies will be 
owned by the Company, and the proceeds will be paid to the Company.  
The Nominee will have no beneficial interest in any such insurance 
policy.

     The premium payments, cash values, loans and interest of any 
policies on the life of a Nominee for any calendar year will be 
allocated among the Participating Corporations.

     Proceeds from policies on the lives of Nominees will be allocated 
in proportion to the total benefits and premiums paid by and for which 
each Participating Corporation is ultimately responsible. 

10.  PAYMENT OF BENEFITS

     Benefits as well as premium payments will be the obligation of 
the Company and/or Participating Corporations. 

11.  ADMINISTRATION

     The Management Performance Committee of the Company's Board shall 
administer the Plan and may appoint an officer of the Company to 
assist the Committee with this responsibility.  The Board shall have 
the sole responsibility to interpret the Plan and adopt such rules and 
regulations for carrying out the Plan as it may deem necessary.  
Decisions of the Board shall be final and binding. 

12.  SUCCESSOR TO THE COMPANY

     The Company shall require any successor or assign, whether direct 
or indirect, by purchase, merger, consolidation or otherwise, to all 
or substantially all of the business and/or assets of the Company, to 
assume and agree to pay any Retirement Benefits in the same manner and 
to the same extent that the Company would be required to perform if no 
such succession or assignment had taken place.

13.  CHANGE IN CONTROL AND LEGAL FEES

     The Company shall pay all legal fees and expenses that a Retired 
Nominee or a Nominee may reasonably incur as a result of the Company's 
contesting the validity or enforceability of such person's right to 
receive benefits under the terms of this Plan following a "Change in 
Control" of the Company.    

     In the event that a Change in Control of the Company occurs and a 
Nominee's employment with the Company or its successor(s) terminates, 
the Nominee shall receive a full lump-sum payment of his Retirement 
Benefits calculated as set forth in Section 6 within 30 days of 
his/her termination.

     A Change in Control of the Company shall be deemed to have 
occurred if (i) any Acquiring Person (as such term is defined in the 
Rights Agreement dated as of February 13, 1996, between the Company 
and ChaseMellon Shareholder Services L.L.C.) is or becomes the 
beneficial owner (as such term is used in Rule 13d-3 under the 
Securities Exchange Act of 1934) of securities of the Company 
representing 25 percent or more of the combined voting power of the 
Company; or (ii) the following individuals cease for any reason to 
constitute a majority of the number of directors then serving:  
individuals who, as of May 19, 1998, constitute the Company's Board of 
Directors (Board) and any new director (other than a director whose 
initial assumption of office is in connection with an actual or 
threatened election contest, including but not limited to a consent 
solicitation, relating to the election of directors of the Company) 
whose appointment or election by the Board or nomination for election 
by the Company's stockholders was approved or recommended by a vote of 
at least two-thirds (2/3) of the directors then still in office who 
either were directors on May 19, 1998, or whose appointment, election 
or nomination for election was previously so approved or recommended; 
or (iii) the Company's stockholders approve a merger or consolidation 
of the Company or any direct or indirect subsidiary of the Company 
with any other corporation, other than a merger or consolidation that 
would result in the voting securities of the Company outstanding 
immediately prior to such merger or consolidation continuing to 
represent (either by remaining outstanding or by being converted into 
voting securities of the surviving entity or any parent thereof) at 
least 60 percent of the combined voting power of the securities of the 
Company or such surviving entity or any parent thereof outstanding 
immediately after such merger or consolidation, or a merger or 
consolidation effected to implement a recapitalization of the Company 
(or similar transaction) in which no person is or becomes the 
beneficial owner, directly or indirectly, of securities of the Company 
representing 25 percent or more of the combined voting power of the 
Company's then outstanding securities; or (iv) the Company's 
stockholders approve a plan of complete liquidation or dissolution of 
the Company or there is consummated an agreement for the sale or 
disposition by the Company of all or substantially all of the 
Company's assets, other than a sale or disposition by the Company of 
all or substantially all of the Company's assets to an entity, at 
least 60 percent of the combined voting power of the voting securities 
of which are owned by stockholders of the Company in substantially the 
same proportions as their ownership of the Company immediately prior 
to such sale.  A Change in Control, however, shall not be considered 
to have occurred until all conditions precedent to the transaction, 
including but not limited to, all required regulatory approvals have 
been obtained.

14.  AMENDMENT OR TERMINATION

     The Board may at any time amend, alter, modify or terminate this 
Plan; provided, however, that any such action shall not adversely 
affect the rights of any current Nominees or their Spouses or 
Dependents then eligible to receive benefits under the Plan on the 
date of such amendment, alteration, modification or termination.