Document:

QUESTAR CORPORATION
                       DEFERRED COMPENSATION PLAN
                    FOR HIGHLY COMPENSATED EMPLOYEES
          (As Amended and Restated Effective October 26, 2000)

   Questar Corporation hereby amends this DEFERRED COMPENSATION
  PLAN FOR HIGHLY COMPENSATED EMPLOYEES, effective October 26,
  2000.  This Plan, which was originally adopted effective
  November 1, 1993, is an unfunded plan established to provide
  highly compensated employees with an opportunity to defer
  receipt of up to a specified portion of their annual
  compensation in order to reduce current tax obligations.

  1.   Definitions.

   "Affiliated Company" means the Company and any corporation that
  is a member of a controlled group of corporations (as defined in
  Section 414(b) of the Code), which includes the Company.

   "Beneficiary" means that person or persons who become entitled
  to receive a distribution of benefits under the Plan in the
  event of the death of a Participant prior to the distribution of
  all benefits to which he is entitled.

   "Code" means the Internal Revenue Code of 1986 and amendments
  thereto.  Reference to a section of the Code shall include that
  section and any comparable section or sections of any future
  legislation that amends, supplements or supersedes said section.

   "Common Stock" means common stock of the Company.

   "Company" means Questar Corporation, a corporation organized
  and existing under the laws of the State of Utah, or its
  successor or successors.

   "Compensation" means an Employee's salary or wages and payments
  under incentive compensation plans paid by the Employer and
  includable in taxable income during the applicable Plan Year,
  but exclusive of any other forms of additional Compensation such
  as the Employer's cost for any public or private employee
  benefit plan or any income recognized by the employee as a
  result of exercising stock options.  An Employee's Compensation
  for any Plan Year shall include any Elective Deferrals of the
  Employee under the Company's Employee Investment Plan or other
  tax-qualified plans.  An Employee's Compensation also shall
  include the amount of any reduction in Compensation for a Plan
  Year agreed upon under one or more Compensation reduction
  agreements entered into pursuant to the Questar Corporation
  Cafeteria Plan.

   "Disability" means a condition that renders a Participant
  unable to engage in any substantial gainful activity by reason
  of any medically determinable physical or mental impairment
  which can be expected to result in death or to be of
  long-continued and indefinite duration.  A Participant shall not
  be considered to be disabled unless he furnishes proof of the
<PAGE>

  existence of such disability in such form and manner as may be
  required by regulations promulgated under Code Section 72(m)(7).

   "Employee" means any officer or key manager of an Employer who
  meets the eligibility criteria set out in Paragraph 4 of this Plan.

   "Employer" means the Company and each Affiliated Company that
  consents to the adoption of the Plan.

       "Fair Market Value" means the closing price of the
  Company's common stock as reported on the composite tape of the
  New York Stock Exchange for any given valuation date or the next
  preceding day on which sales took place if no sales occurred on
  the actual valuation date.

   "Participant" means an Employee who has made an election under
  Paragraph 5 of this Plan.

   "Plan" means the plan set forth in and created by this document
  and all subsequent amendments thereto.

   "Plan Year" means the fiscal year of the Plan, which shall
  coincide with the Company's fiscal year.

   "Tax-Qualified Plan" means the Questar Corporation Employee
  Investment Plan, as amended from time to time, or any
  tax-qualified plan adopted by the Company.

  2.   Purpose of Plan.

   The purpose of the Plan is to provide eligible Employees with
  the opportunity to defer receipt of up to a specified portion of
  their annual Compensation in order to reduce current tax payment
  obligations.

  3.   Administration.

   The Management Performance Committee of the Company's Board of
  Directors shall construe and administer the Plan and shall have
  full authority to make such rules and regulations deemed
  necessary or desirable to carry out such administration. The
  Management Performance Committee may appoint an officer or
  department to assist with the administration of the Plan.  All
  interpretations of the Plan by the Committee shall be final and
  binding on all parties, including Participants, Beneficiaries
  and Employers.

  4.   Eligibility.

   All officers and any key manager whose annual Compensation is
  expected to exceed $125,000 are eligible to participate in the
  Plan.
<PAGE>

  5.   Election to Defer Compensation.

   In order to participate in the Plan during 1993, an Employee
  must make an election to defer at least $500 per month of
  participation.  For the first Plan Year, which is a partial Plan
  Year, such election must be made at or prior to the effective
  date of this Plan and can only be made as to Compensation to be
  paid for future services.  In order to participate in subsequent
  Plan Years, an Employee must make an election to defer an amount
  from $5,000 to 50 percent of annual Compensation.  Such
  elections must be made prior to the first day of the Plan Year
  in which it is to become effective and can only be made with
  respect to Compensation to be paid for future services.  A
  deferral election, once made, shall remain in effect for
  subsequent Plan Years until it is revoked or modified by the
  Participant.  A Participant can modify or revoke his deferral
  election with respect to Compensation to be paid for future
  services by submitting a new election or a revocation prior to
  the beginning of the Plan Year in which such new deferral
  election or revocation is to become effective.  All notices of
  election or revocation shall be made on forms prepared by the
  Company's Secretary and shall be dated, signed, and filed with
  the Company's Secretary.

  6.   Elections, Deemed Investments.

       When making an election to defer Compensation, an Employee
  must choose between two methods of determining earnings on the
  deferred Compensation.  He may choose to have such earnings
  calculated as if the deferred Compensation had been invested in
  shares of the Company's Common Stock (the "Common Stock Option")
  or he may choose to have earnings calculated by adding 100 basis
  points to the interest payable on a 10-Year Treasury Note (the
  "Treasury Note Option").  An Employee may also choose to
  allocate his deferred Compensation between the options in
  increments of 25 percent, 50 percent, or 75 percent.

       The Participant must designate his deemed investment for
  all of the Compensation he elects to defer in any given year.
  He may change the deemed investment for future deferred
  Compensation by filing the appropriate notice with the Company's
  Corporate Secretary before the first day of each calendar year,
  but such change shall not affect the method of determining
  earnings of any Compensation deferred in a prior year.

       Any deferred Compensation accounted for under the Common
  Stock Option  shall be accounted for as if invested in shares of
  Common Stock purchased at a price equal to the average price
  paid for shares of Common Stock purchased by the trustee of the
  Tax-Qualified Plan during the month (quarter prior to January 1,
  1996) in which the deferrals are made under this Plan.  This
  amount shall be credited to a Participant's account on a monthly
  (quarterly prior to January 1, 1996) basis.  In addition, a
  Participant's account shall be credited on a quarterly basis
  with an amount equal to the dividends that would have become
  payable during the deferral period if actual purchases of Common
  Stock had been made, with such dividends accounted for as if
  invested in Common Stock as of the payable date for such
  dividends.  Any credited shares treated as if they were
  purchased with dividends shall be deemed to have been purchased
<PAGE>

  at a price equal to the average price of shares purchased with
  reinvested dividends under the Tax-Qualified Plan during the
  quarter in which the deemed purchases are treated as being made
  under this Plan.

       If a Participant elects the Treasury Note Option, his
  account will be credited with any Compensation deferred by the
  Participant in any given month.  Interest shall be calculated at
  a monthly rate calculated by dividing by 12 the sum of 100 basis
  points plus the rate for the appropriate 10-Year Treasury Note
  as quoted in the Wall Street Journal under "Consumer Savings
  Rates" on the Thursday closest to the end of the month or other
  published source of such rates as identified by Questar
  Corporation's Treasury department.  The appropriate 10-Year
  Treasury Note shall be the Note that is the closest (in terms of
  months) to the date on which the interest is credited.  The
  interest deemed to be credited to each Account shall be based on
  the amount credited to such Account at the beginning of each
  particular month.

  7.   Integration with Other Plans.

       If an employee elects to reduce his Compensation under the
  terms of this Plan, six percent of any Compensation deferred
  shall be accounted for under the terms of the Questar
  Corporation Deferred Share Plan.  A Participant's benefits (if
  any) under the Company's Executive Incentive Retirement Plan
  shall be based on the Participant's base salary including any
  base salary deferred under the terms of this Plan or the
  Company's Deferred Share Plan or any base salary reductions
  under the Company's Tax-Qualified Plan or Cafeteria Plan.  A
  Participant's benefits (if any) under the Company's Supplemental
  Executive Retirement Plan or Equalization Benefit Plan shall be
  based on the Participant's Compensation plus any Compensation
  deferred under the terms of this Plan or the Company's Deferred
  Share Plan.

  8.   Account Statement.

   Within 60 days after the end of the calendar year, a statement
  shall be sent to each Participant listing the balance in his
  account as of the end of the year.

  9.   Payment of Account Balances.

       When making the first deferral election under Paragraph 5,
  a Participant shall determine when to receive the Compensation
  deferred by him.  A Participant can elect to receive such
  deferred Compensation at a specified date prior to his
  termination of employment, e.g., December 31, 2001, upon his
  termination of employment or at a specified time within five
  years after his termination of employment.  A Participant can
  also elect whether to receive deferred Compensation in a
  lump-sum payment or in a number of annual installments (not to
  exceed four).  A Participant cannot change such elections for
  Compensation previously deferred, but can change such elections
  for Compensation to be paid for future services.

       Under the Common Stock Option, the account balance shall be
  valued using the Fair Market Value of the Company's Common Stock
  on the last day of the calendar month preceding payment and
<PAGE>

  shall be converted to a cash balance based upon such Fair Market
  Value.  Under an installment payout, the Participant's first
  installment shall be equal to a fraction of the balance credited
  to his account (or the portion of his account to be paid in
  installments) as of the last day of the calendar month preceding
  such payment, the numerator of which is one and the denominator
  of which is the total number of installments selected.  The
  amount of each subsequent payment shall be a fraction of the
  balance in the Participant's account as of the last day of the
  calendar month preceding each subsequent payment, the numerator
  of which is one and the denominator of which is the total number
  of installments elected minus the number of installments
  previously paid.

       Under the Treasury Note Option, the account balance shall
  be valued as of the date of withdrawal, which is the last day of
  the calendar month preceding payment, with interest credited to
  such date.  Under an installment payout, the Participant's first
  installment shall be equal to a fraction of the balance credited
  to his account (or the portion of his account to be paid in
  installments) as of the last day of the calendar month preceding
  such payment, the numerator of which is one and the denominator
  of which is the total number of installments selected.  The
  amount of each subsequent payment shall be a fraction of the
  balance in the Participant's account as of the last day of the
  calendar month preceding each subsequent payment, the numerator
  of which is one and the denominator of which is the total number
  of installments elected minus the number of installments
  previously paid.

  10.  Miscellaneous Payment Issues.

       (a)  Adverse Tax Determination.  If there is a
  determination by the Internal Revenue Service (IRS) that a
  Participant should be taxed on some or all of the amounts
  allocated to his account prior to the distribution date(s)
  elected under Paragraph 9, the Participant may elect to have all
  amounts determined to be currently taxable paid to him
  immediately prior to the time he must pay any taxes owed as a
  result of such IRS determination.

   (b) Change in Control.  Notwithstanding any other provision of
  this Plan, in the event of a "Change in Control" of the Company
  (as defined below), all deferred Compensation credited to a
  Participant's account shall be distributed to him within 60 days
  following the Change in Control.

       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. ("Rights
  Agreement")) 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
<PAGE>

  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 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 its parent
  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.

   (c) Method of Payment.  All amounts credited to a Participant's
  account shall be distributed to him or, in the event of his
  death, to his Beneficiary, in cash and in accordance with the
  election made by the Participant.

   (d) Source of Payments.  Each participating Employer will pay
  all benefits for its Employees arising under this Plan, and all
  costs, charges and expenses relating thereto, out of its general
  assets.

  11.  Amendment and Termination of Plan.

   The Plan may be amended, modified or terminated by the
  Company's Board of Directors at any time.  Provided, however, no
  such amendment, modification or termination shall be made in the
  event there is a Change in Control, as defined in Paragraph
  10(b).  In addition, no amendment, modification, or termination
  shall reduce any deferred benefit under the Plan reflected in a
  Participant's account prior to the date of such amendment or
  termination.
<PAGE>

  12.  Non-assignability of Benefits.

   To the extent consistent with applicable law, the Participant's
  deferred benefits under this Plan shall not be assigned,
  transferred, pledged, or encumbered or be subject in any manner
  to alienation or attachment.

  13.  No Creation of Rights.

   Nothing in this Plan shall confer upon any Participant the
  right to continue as an Employee of an Employer.  The right of a
  Participant to receive a cash distribution shall be an unsecured
  claim against the general assets of his Employer.  Nothing
  contained in this Plan nor any action taken hereunder shall
  create, or be construed to create, a trust of any kind, or a
  fiduciary relationship between the Company and the Participants,
  Beneficiaries, or any other persons.  All accounts under the
  Plan shall be maintained for bookkeeping purposes only and shall
  not represent a claim against specific assets of any Employer.

  14.  Effective Date.

   The Plan, as originally adopted, was effective November 1,
  1993.  The Plan, as amended and restated, is effective October
  26, 2000, and shall remain in effect until it is discontinued by
  action of the Company's Board of Directors.
<PAGE>EMPLOYMENT AGREEMENT

       This employment agreement is dated as of February 1, 2001
(the "Agreement") between Questar Corporation, a Utah corporation
("Company"), and Keith O. Rattie ("Executive").

       WHEREAS, the Company desires to employ Executive as its
President and Chief Operating Officer upon the terms and subject to
the conditions set forth in this Agreement.

       NOW, THEREFORE, the Company and Executive hereby agree as
follows:

                              ARTICLE 1
                             DEFINITIONS

       The terms set forth below have the following meanings:

       Agreement Date means the effective date of this Agreement.

       Anniversary Date means any annual anniversary of the
Agreement Date.

       Board means the Board of Directors of the Company

       Cause means any of the following: (a) Executive's conviction
of a felony or of a misdemeanor involving fraud, dishonesty or moral
turpitude, or (b) Executive's willful or intentional material breach
of this Agreement that results in financial detriment that is
material to the Company and its Affiliates taken as a whole.

       For purposes of clause (b) of the preceding sentence, Cause
shall not include any one or more of the following: (i) bad
judgment, (ii) negligence, (iii) any act or omission that Executive
believed in good faith to have been in or not opposed to the
interest of the Company (without intent of Executive to gain,
directly or indirectly, a profit to which he was not legally
entitled), or (iv) Any act or omission of which any member of the
Board who is not a party to such act or omission has had actual
knowledge for at least 12 months.

       Change in Control means the following: A Change in Control of
the Company shall be deemed to have occurred if (a) 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. ("Rights Agreement")) is or becomes the beneficial
owner (as such term is sued 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 (b)
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
<PAGE>

election by the Company's stockholders was approved or recommended
by a vote of at least two-thirds 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 (c) 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 its parent outstanding immediately after such
merger or consolidation, or a merger or consolidation effected to
implement a recapitalization of the Company for 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 (d) 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.

       Committee means the Management Performance Committee of the
Board.

       Common Stock means the common stock of the Company.

       Company means Questar Corporation.

       Date of Termination means the effective date of a Termination
of Employment for any reason, including death or Disability, whether
initiated by the Company or by Executive.

       Disability means a mental or physical condition that, in the
opinion of the Board, renders Executive unable or incompetent to
carry out the material job responsibilities that such Executive held
or the material duties to which Executive was assigned at the time
the disability was incurred, which has existed for at least three
months and which in the opinion of a physician mutually agreed upon
by the Company and Executive (provided that neither party shall
unreasonably withhold his agreement) is expected to be permanent or
to last for an indefinite duration or a duration in excess of six
months.

       Employment Period means that subject to termination
provisions, the term of Executive's employment under this Agreement
(the "Employment Period") shall begin on the Agreement Date and end
on the Anniversary Date that is three years after such date.

       Good Reason means the occurrence of any one or more of the
following events unless Executive specifically agrees in writing
that such event shall not be Good Reason: (a) any material breach of
this Agreement by the Company, including: any material adverse
<PAGE>

change in the status, responsibilities or perquisites of Executive;
any failure to nominate or elect Executive as Chief Executive
Officer of the Company or as member of the Board; assignment of
duties materially inconsistent with his position and duties;   (b)
the failure of the Company to assign this Agreement to a successor
to the Company or failure of a successor to the Company to
explicitly assume and agree to be bound by this Agreement.  Any
reasonable determination by Executive that any of the specified
events has occurred and constitutes Good Reason shall be conclusive
and binding for all purposes.

       Subsidiary means any entity of which the Company, directly or
indirectly, owns at least 50 percent of the outstanding shares of
capital stock entitled to vote for the election of directors.

       Termination For Good Reason means a Termination of Employment
by Executive for a Good Reason.

       Termination of Employment means a termination by the Company
or by Executive of Executive's employment by the Company.

       Termination Without Cause means a Termination of Employment
by the Company for any reason other than Cause or Executive's death
or Disability.

                              ARTICLE 2
                                DUTIES

       Chief Operating Officer Duties.  The Company shall employ
Executive during the Employment Period as its President and Chief
Operating Officer, reporting to R. D. Cash, the Company's Chairman
and Chief Executive Officer.  At its discretion, the Board may
appoint Executive to serve in other capacities with the Company's
Subsidiaries.  During the first two years of Employment Period, the
Board shall determine whether the Executive has the leadership
qualities and business acumen to serve as the Company's Chief
Executive Officer.  Executive, during the Employment Period, shall
devote substantially all of his business time, attention, and effort
to the affairs of the Company and shall use his reasonable efforts
to promote the best interests of the Company.

       Director Duties.  Effective February 1, 2001, the Board shall
appoint Executive to serve as a Director of the Company for the
remainder of a three-year term that will expire in May of 2003.  As
long as the Executive serves as an employee or officer, the Board
shall continue to nominate Executive for election as a Director of
the Company.   At its discretion, the Board of Directors of any
Subsidiary may appoint Executive to serve as a director of such
Subsidiary for the remainder of a one-year term that expires in May
of 2001.

                              ARTICLE 3
                          EMPLOYMENT PERIOD

       Employment Period.  Subject to termination provisions, the
term of Executive's employment under this Agreement (the "Employment
Period") shall begin on the Agreement Date and end on the
<PAGE>

Anniversary Date that is three years after such date.  The
employment of Executive during the Employment Period shall not be
terminated other than in accordance with Article 7.

                              ARTICLE 4
                             COMPENSATION

       Salary.  The Company shall pay Executive an annual base
salary of $400,000, payable in semi-monthly installments ("Base
Salary").  The Committee shall review the Executive's Base Salary
when it reviews the base salaries paid to the Company's other
executive officers in February of each year and can only increase,
not reduce, the Executive's Base Salary.  The Committee shall also
determine how to allocate the Executive's Base Salary among the
Company and its principal Subsidiaries.

       Annual Bonus.  The Executive shall be nominated to
participate in the Company's Annual Management Incentive Plan
("AMIP") for each year of the Employment Period and shall have a
Target Bonus equal to 50 percent of his base salary at the time the
target bonus is set ("Target Bonus").  (A copy of the Company's AMIP
is attached as Exhibit A.)  The annual minimum, target, and maximum
performance goals for the Company and its principal Subsidiaries
shall be approved by the Committee each year within 90 days after
the beginning of such year.

                              ARTICLE 5
                      STOCK OPTIONS, RESTRICTED
                      STOCK AND STOCK OWNERSHIP

       Option Grants.  The Company shall grant to Executive, as of
the Agreement Date, an option to purchase 100,000 shares of the
Company's common stock at a per share price equal to the closing
price of the Company's common stock as reported in the Wall Street
Journal on the Agreement Date.  The option shall be granted pursuant
to the terms of the Company's Long-Term Stock Incentive Plan ("Stock
Plan"); shall vest in four equal, annual installments, with the
first installment vesting six months after being granted; and shall
have a term of 10 years.  To the extent permitted under applicable
tax laws, the initial option granted to the Executive shall be an
incentive stock option.  The agreements for the initial option and
all subsequent options granted to the Executive shall contain a
special provision that permits the Executive to have 30 days after
Termination of Employment (for reasons other than death, Disability,
approved retirement, or a Change in Control) to exercise the vested
portion of any options granted to him.  (If the Executive's
employment is terminated for one of the specified reasons, he shall
have longer periods of time in which to exercise his options.)  A
copy of the Stock Plan and a copy of the form of Executive's Option
Agreement are attached to this Agreement as Exhibits B and C,
respectively.

       The Company shall also grant to Executive, in February of
2001, another stock option to purchase at least 100,000 shares of
the Company's common stock, as part of the annual round of options
granted to the Company's officers and key employees.  As long as
Executive serves as an executive officer of the Company, the Company
shall grant a stock option to Executive when it takes action to
grant stock options to other officers and employees.
<PAGE>

       Restricted Stock.  As of the March 1, 2001, the Company shall
grant 21,000 restricted shares of the Company's common stock to the
Executive.  One-third of the grant (7,000 shares) shall vest and
become nonforfeitable upon each anniversary of the Agreement Date
during the Employment Period, except that all of the restricted
shares shall immediately vest and become nonforfeitable in the event
of a Change in Control and that a pro rata portion of the remaining
restricted shares shall immediately vest and become nonforfeitable
in the event of the Executive's Termination of Employment for a
reason other than Cause.  A copy of the form of Restricted Stock
Grant is attached to this Agreement as Exhibit D.

       Any shares of restricted stock granted as partial payment of
bonuses earned by Executive under the AMIP shall vest in accordance
with the provisions set forth in it.

       The Executive shall choose between recognizing ordinary
income equal to the value of the shares of restricted stock at time
of grant or recognizing ordinary income equal to the value of the
shares of restricted stock as they vest and become nonforfeitable.
The Executive shall pay all withholding taxes attributable to the
recognition of income and may elect to use a portion of the shares
that would otherwise be distributed to satisfy such withholding
obligations.

       The shares of restricted stock granted to Executive in 2001
are included within the shares reserved under the terms of the Stock
Plan and are covered by a registration statement filed with the
Securities and Exchange Commission.  The Company intends to register
any shares of restricted stock that may be issued under any
successor to the Stock Plan.

       The grant of restricted stock is being made pursuant to the
Stock Plan as amended and restated effective March 1, 2001.
Consequently, the stock grant is being made subject to shareholder
approval of the amendments, which is expected in May of 2001.

       Stock Ownership.  The Company requires all officers to own
shares of the Company's common stock.  Executive shall be given the
duration of the initial Employment Period to own shares of the
Company's common stock (including phantom stock units) having a
value equal to one times his annual compensation.

                              ARTICLE 6
                            OTHER BENEFITS

       Qualified Retirement Plans.  During the Employment Period,
the Executive shall be entitled to participate in the qualified
plans (including defined benefit and 401(k) savings) sponsored by
the Company in accordance with the general rules applicable to other
employees participating in such plans.

       Welfare Benefit Plans.  During the Employment Period, the
Executive shall be eligible to participate in the welfare benefit
plans and programs (including health, life insurance, catastrophe
accident, cafeteria, disability, approved personal leave) sponsored
by the Company in accordance with the general rules applicable to
such plans.
<PAGE>

       Vacation.  During the Employment Period, the Executive shall
be entitled to paid vacation time in accordance with the Company's
general rules, except that the Executive shall have the right to
four weeks of paid vacation in each anniversary year.  After the
Executive has five anniversary years, he shall be entitled to five
weeks of paid vacation in each anniversary year.

       Nonqualified Benefit Plans.  During the Employment Period,
the Executive shall be eligible to participate in the Company's
optional nonqualified plans such as the Deferred Share Make-up Plan,
the Deferred Compensation Plan, and the Deferred Share Plan
(Collectively referred to as the "Deferred Compensation Plans") and
shall be covered by the Company's nonqualified plan the Supplemental
Executive Retirement Plan (the "SERP") to make-up the difference
between what can be earned by and paid to the Executive under the
Company's qualified deferred benefit plan and what could be earned
by and paid to the Executive under such plan in the absence of
federal tax law limitations applicable to it.  A copy of such
Deferred Compensation Plan and the SERP are attached to the
Agreement as Exhibits E, F, G, and H respectively.

       Change in Control/Indemnification.  The Executive shall be
nominated to participate in the Company's Executive Severance
Compensation Plan ("Change in Control Plan") and shall also be given
an Indemnification Agreement.  A copy of the Change in Control Plan,
the form of Change in Control Agreement, and the form of
Indemnification Agreement are attached as Exhibits I, J, and K.

       Relocation Expenses.  The Company shall pay the Executive a
one-time relocation allowance of $50,000 for him and his family to
move from Houston, Texas, to Salt Lake City, Utah.  The Company
shall also reimburse Executive for any normal and customary moving
expenses, which include airfare and expenses for the Executive and
his spouse to make up to three house-hunting trips.  During the
first year of the Employment Period, the Company shall also pay for
up to five round trips for the Executive to travel between Salt Lake
City and Houston.

       Other Benefits.  During the Employment Period, the Executive
shall be entitled to participate in the Company's special tax
preparation and financial planning reimbursement program available
to the Company's officers.  The Executive shall also be entitled to
participate in any special programs adopted for the Company's
executive officers.

       Office and Support Staff.  During the Employment Period,
Executive shall be entitled to an office and secretarial assistance
appropriate to his position.

       Expenses.  During the Employment Period, Executive shall be
entitled to receive prompt reimbursement for all reasonable
employment-related expenses incurred by him and approved in
accordance with the Company's standard policies.

                              ARTICLE 7
                      TERMINATION OF EMPLOYMENT

       Termination for Cause.  If the Company terminates Executive's
employment for Cause, the Company shall only be required to pay
Executive any earned but unpaid base salary and vacation benefits.
<PAGE>

       The Company may not terminate Executive's employment for
Cause unless it has: (a) officially given the Executive written
notice at least 30 days prior to the Date of Termination of its
intent to terminate Executive's employment, that contain a detailed
description of the specific reasons that form the basis for such
action; (b) provided the Executive an opportunity to appear before
the Board prior to the Date of Termination to present arguments on
his own behalf; and (c) received the affirmative vote of at least
two-thirds of the members of the Board that it is proper to
terminate the Executive's employment for Cause.  Pending the final
resolution of any disputes concerning the Executive's termination of
employment for Cause, the Board may suspend Executive with pay.

       Termination for Death or Disability.  If Executive's
employment terminates during the Employment Period due to his death
or Disability, the Company shall pay to the Executive's
beneficiaries (in the event of his death) or to the Executive (in
the event of his Disability), a lump-sum amount equal to the
Executive's Base Salary for the remainder of the Employment Period.
The Company, in accordance with the AMIP, shall also pay a pro rata
portion of the annual bonus that would have been paid to the
Executive but for his death or Disability; this bonus amount shall
be paid in cash and shall be paid in February of the year following
the performance period and shall be prorated based on the portion of
the performance period that Executive was performing his duties (in
the event of his death) or receiving short-term disability benefits
(in the event of Disability).  The Company shall also distribute a
pro rata portion of the one-time award of shares of stock previously
granted to the Executive on the Agreement Date and all shares of
stock previously granted as partial payment of the annual bonuses
earned under the AMIP.

       Termination Without Cause.  If the Company terminates
Executive's employment during the Employment Period for some reason
other than Cause, the Company shall pay Executive a lump-sum amount
equal to the Executive's Base Salary for the remainder of the
Employment Period and the Target Bonus amount for the year in which
his termination occurs.  The Company shall also distribute a pro
rata portion of the one-time award of shares of stock previously
granted to the Executive on the Agreement Date and all shares of
stock previously granted as partial payment of the annual bonuses
earned under the AMIP.  The calculation of any cash severance
benefit shall be based on the Executive's Base Salary at the time of
termination.

       Termination by Executive.  The Executive can terminate his
employment for any reason, provided that he gives the Board written
notice at least 30 days' prior to his Date of Termination.  If the
Executive terminates his employment for other than Good Reason, he
shall only be paid his earned but unpaid Base Salary and accrued
vacation benefits (up to time of termination).

       If the Executive terminates his employment for Good Reason,
the Company shall pay Executive a lump sum amount equal to his Base
Salary for the remainder of the Employment Period and the Target
Bonus for the year in which the termination occurs.  The Company
shall also distribute a portion of the one-time award of shares of
stock previously granted to the Executive on the Agreement Date and
all shares of stock previously granted as partial payment of the
annual bonuses earned under the AMIP.  The calculation of any cash
severance benefit shall be based on the Executive's Base Salary at
the time of termination.
<PAGE>

                              ARTICLE 8
                        RESTRICTIVE COVENANTS

       Non-Solicitation of Employees.  During the remainder of any
Employment Period for which the Executive is receiving compensation
as a result of a Termination of Employment and during the one-year
period immediately following a Termination of Employment for Cause
or Termination by Executive for other than Good Reason, the
Executive shall not directly or indirectly employ or seek to employ
any employees of the Company or its Subsidiaries and shall not
entice or otherwise encourage any such employee to leave such
employment.

       Confidentiality.  During the Employment Period, the Executive
shall maintain the confidential nature of information concerning the
Company's financial results and business strategies and shall not
disclose such information to any person whose interests are or may
be adverse to the Company's interests or any person that may use
such information to obtain personal financial gain.
       After a Termination of Employment for any reason, the
Executive shall not, without the prior written consent of the
Company or as may otherwise be required by law or legal process,
communicate or divulge any confidential information other than the
Company and its designees.

       Injunction.  Executive acknowledges that monetary damages
will not be an adequate remedy for the Company in the event he
breaches the provisions of this Article.  Consequently, Executive
agrees that the Company is entitled to an injunction to prevent
Executive from any breach of the provisions of this Article in
addition to other rights that the Company may have.

                              ARTICLE 9
                            MISCELLANEOUS

       Beneficiary.  If Executive dies prior to receiving all of the
amounts payable to him in accordance with the terms of this
Agreement, such amounts shall be paid to one or more beneficiaries
designated by Executive in writing to the Company during his
lifetime, or if no such beneficiary is designated, to Executive's
estate.  Such payments shall be made in a lump sum to the extent so
payable and, to the extent not payable in a lump sum, in accordance
with the terms of this Agreement.  Executive, without the consent of
any prior beneficiary, may change his designation of beneficiary or
beneficiaries at any time or from time to time by submitting to the
Company a new designation in writing.

       Assignment: Successors.  The Company may not assign its
rights and obligations under this Agreement without the prior
written consent of Executive except to a successor of the Company's
business that expressly assumes the Company's obligations in
writing.  This Agreement shall be binding upon and inure to the
benefit of Executive, his estate and Beneficiaries, the Company and
the successors and permitted assigns of the Company.

       Nonalienation.  Benefits payable under this Agreement shall
not be subject in any manner to anticipation, alienation, sale,
transfer, assignment, pledge, encumbrance, charge, garnishment,
execution of levy of any kind, either voluntary or involuntary,
prior to actually being received by Executive or a beneficiary, as
<PAGE>

applicable, and any such attempt to dispose of any right to benefits
payable hereunder shall be void.

       Severability.  If one or more parts of this Agreement are
declared by any court or governmental authority to be unlawful or
invalid, such unlawfulness or invalidity shall not invalidate any
part of this Agreement not declared to be unlawful or invalid.  Any
part so declared to be unlawful or invalid shall, if possible, be
construed in a manner which will give effect to the terms of such
part to the fullest extent possible while remaining lawful and valid.

       Amendment: Waiver.  This Agreement shall not be amended or
modified except by written instrument executed by the Company and
Executive.  A waiver of any term, covenant or condition contained in
this Agreement shall not be deemed a waiver of any other term,
covenant or condition, and any waiver of any default in any such
term, covenant or condition shall not be deemed a waiver of any
later default thereof.

       Notices.  All notices hereunder shall be in writing and
delivered by hand, by nationally-recognized delivery service that
guarantees overnight delivery, or by first-class, registered or
certified mail, return receipt requested, postage prepaid, addressed
as follows:

       If to the Company, to         Questar Corporation
                                     180 East 100 South
                                     Salt Lake City, Utah 84111
                                     Attention: R. D. Cash

       with a copy to:               Questar's General Counsel
                                     180 East 100 South
                                     Salt Lake City, Utah 84111

       If to Executive, to:          Keith O. Rattie
                                     [Home Address]

Either party may from time to time designate a new address by notice
given in accordance with this Section.  Notice shall be effective
when actually received by the addressee.

       Counterparts.  This Agreement may be executed in several
counterparts, each of which shall be deemed to be an original but
all of which together will constitute one and the same instrument.

       Entire Agreement.  This Agreement forms the entire agreement
between the parties with respect to the subject matter addressed in
this Agreement.  It supersedes all prior agreements, promises and
representations regarding employment, compensation, severance or
other payments contingent upon termination of employment.

       Applicable Law.  This Agreement shall be interpreted and
construed in accordance with the laws of the state of Utah, without
regard to its choice of law principles.
<PAGE>

       Survival of Executive's Rights and Obligations.  All of
Executive's rights and obligations shall survive the termination of
Executive's employment and/or the termination of this Agreement.

       IN WITNESS WHEREOF, the parties have executed this Agreement
on the date first above written.

                                     QUESTAR CORPORATION

                                     By /s/R. D. Cash
                                      R. D. Cash
                                      Chairman of the Board

                                     EXECUTIVE

                                      /s/Keith O. Rattie
                                      K. O. Katter

<PAGE>

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