FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public
Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

RATTIE KEITH O 		2. Issuer Name and Ticker or Trading Symbol

QUESTAR CORP [ STR ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Pres.& Chief Executive Officer
(Last)          (First)          (Middle)

180 EAST 100 SOUTH, P.O. BOX 45433 		3. Date of Earliest Transaction (MM/DD/YYYY)

6/16/2008
(Street)

SALT LAKE CITY, UT 84145-0433
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock                  228244   D    
Common Stock                  2452.5048   (1) I   Employee Investment Plan  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Phantom Stock Units   $67.96   6/16/2008     A     462.1279         (2)   (2) Phantom Stock Units   462.1279   $67.96   36384.0547   (3) (4) D    
Stock Option   $13.71                   8/1/2001   2/1/2011   Common Stock   100000     100000   D    
Stock Option   $14.005                   8/13/2001   2/13/2011   Common Stock   200000     200000   D    
Stock Option   $11.475                   8/11/2002   2/11/2012   Common Stock   280000     280000   D    
Stock Option   $13.555                   8/11/2003   2/11/2013   Common Stock   300000     300000   D    
Stock Option   $38.57                   2/1/2010   10/24/2012   Common Stock   0     0   D    
Stock Option   $53.83                   2/12/2010   2/12/2016   Common Stock   0     0   D    
Stock Option   $41.075                   2/13/2009   2/13/2015   Common Stock   0     0   D    

Explanation of Responses:
( 1)  As of June 16, 2008, I have 2,452.5048 equivalent shares of stock in Questar's Employee Investment Plan. The number of equivalent shares will fluctuate as Questar's stock price changes; this fluctuation does not reflect any transactions that should be reported.
( 2)  Phantom stock units will be converted to cash per my elections on or within 5 years of my termination of employment (subject to 6-month delay if necessary to comply with IRC 409A), or upon my death or Disability.
( 3)  I also receive phantom stock units as a result of my participation in an excess benefit plan. This total includes 36,202.2506 units in such plan, in addition to units held through my account balance in a deferred compensation plan. I also receive dividends.
( 4)  This total includes dividends of 65.4654 shares with the remaining shares attributable to my excess benefit plan.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
RATTIE KEITH O
180 EAST 100 SOUTH, P.O. BOX 45433
SALT LAKE CITY, UT 84145-0433

Pres.& Chief Executive Officer

Signatures
Abigail L. Jones Attorney in Fact for K. O. Rattie 6/18/2008
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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