SEC FORM 4/A

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

CASH R D

(Last)

(First)

(Middle)

3205 61ST STREET

(Street)

LUBBOCK

79413

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
QUESTAR CORP [ STR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
04/04/2005

4. If Amendment, Date of Original Filed (Month/Day/Year)
04/05/2005

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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock and attached Common Stock Purchase Rights	04/04/2005		M		11,964	A	$22.95	310,284	D
Common Stock and attached Common Stock Purchase Rights	04/04/2005		F		7,361	D	$60	302,923⁽¹⁾	D
Common Stock and attached Common Stock Purchase Rights								37,043	I	Private Foundation

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock and attached Common Stock Purchase Rights	$22.95	04/04/2005		M			11,964	08/11/2002	04/30/2009	Common Stock and attached Common Stock Purchase Rights	11,964	$22.95	514,977	D
Phantom Stock Units	$0							⁽²⁾	⁽²⁾	Phantom Stock Units	0		8,448.1412⁽³⁾	D
Phantom Stock Units	$0							⁽²⁾	⁽²⁾	Phantom Stock Units	0		31,073.5374⁽⁴⁾	D

Explanation of Responses:

1. This total does not include 7,534 shares held indirectly through family trusts for which I have voting and investment control. I have a power of attorney for 6,000 shares owned by father for which I have investment and voting control. I disclaim any economic interest in these shares or in the shares held through family trusts.

2. May 1, 2004-2006.

3. I have account balances in several deferred compensation plans for directors. Such account balances are credited with dividends. I began receiving annual cash payments for the value of my phantom stock units attributable to deferred director's fees effective May 1, 2004.

4. This total includes 24,983.7050 phantom stock units held in an excess benefits plan. I began receiving cash payments for the value of phantom stock units (exclusive of deferral director's fees) effective May 1, 2003.

	Abigail L. Jones Attorney in Fact for R.D. Cash	04/08/2005
	** 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).
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