<SEC-DOCUMENT>0000751652-16-000357-index.html : 20160428
<SEC-HEADER>0000751652-16-000357.hdr.sgml : 20160428
<ACCEPTANCE-DATETIME>20160428131410
ACCESSION NUMBER:		0000751652-16-000357
CONFORMED SUBMISSION TYPE:	10-K/A
PUBLIC DOCUMENT COUNT:		11
CONFORMED PERIOD OF REPORT:	20151231
FILED AS OF DATE:		20160428
DATE AS OF CHANGE:		20160428

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QUESTAR CORP
		CENTRAL INDEX KEY:			0000751652
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION & DISTRIBUTION [4923]
		IRS NUMBER:				870407509
		STATE OF INCORPORATION:			UT
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08796
		FILM NUMBER:		161598650

	BUSINESS ADDRESS:	
		STREET 1:		333 SOUTH STATE STREET
		STREET 2:		P.O. BOX 45433
		CITY:			SALT LAKE CITY
		STATE:			UT
		ZIP:			84145-0433
		BUSINESS PHONE:		8013245900

	MAIL ADDRESS:	
		STREET 1:		333 SOUTH STATE STREET
		STREET 2:		P.O. BOX 45433
		CITY:			SALT LAKE CITY
		STATE:			UT
		ZIP:			84145-0433

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QUESTAR PIPELINE CO
		CENTRAL INDEX KEY:			0000764044
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				870307414
		STATE OF INCORPORATION:			UT
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-14147
		FILM NUMBER:		161598651

	BUSINESS ADDRESS:	
		STREET 1:		333 SOUTH STATE STREET
		STREET 2:		P.O. BOX 45433
		CITY:			SALT LAKE CITY
		STATE:			UT
		ZIP:			84145-0433
		BUSINESS PHONE:		8013245900

	MAIL ADDRESS:	
		STREET 1:		333 SOUTH STATE STREET
		STREET 2:		P.O. BOX 45433
		CITY:			SALT LAKE CITY
		STATE:			UT
		ZIP:			84145-0433

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MOUNTAIN FUEL RESOURCES INC
		DATE OF NAME CHANGE:	19880331

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QUESTAR GAS CO
		CENTRAL INDEX KEY:			0000068589
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS DISTRIBUTION [4924]
		IRS NUMBER:				870407509
		STATE OF INCORPORATION:			UT
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-69210
		FILM NUMBER:		161598652

	BUSINESS ADDRESS:	
		STREET 1:		333 SOUTH STATE STREET
		STREET 2:		P.O. BOX 45433
		CITY:			SALT LAKE CITY
		STATE:			UT
		ZIP:			84145-0433
		BUSINESS PHONE:		8013245900

	MAIL ADDRESS:	
		STREET 1:		333 SOUTH STATE STREET
		STREET 2:		P.O. BOX 45433
		CITY:			SALT LAKE CITY
		STATE:			UT
		ZIP:			84145-0433

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MOUNTAIN FUEL SUPPLY CO
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-K/A
<SEQUENCE>1
<FILENAME>str12311510kamended.htm
<DESCRIPTION>10-K/A
<TEXT>
Document 1 - file: str12311510kamended.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>2
<FILENAME>str123115ex311.htm
<DESCRIPTION>EXHIBIT 31.1
<TEXT>
Document 2 - file: str123115ex311.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>str123115ex312.htm
<DESCRIPTION>EXHIBIT 31.2
<TEXT>
Document 3 - file: str123115ex312.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.3
<SEQUENCE>4
<FILENAME>str123115ex313.htm
<DESCRIPTION>EXHIBIT 31.3
<TEXT>
Document 4 - file: str123115ex313.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.4
<SEQUENCE>5
<FILENAME>str123115ex314.htm
<DESCRIPTION>EXHIBIT 31.4
<TEXT>
Document 5 - file: str123115ex314.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.5
<SEQUENCE>6
<FILENAME>str123115ex315.htm
<DESCRIPTION>EXHIBIT 31.5
<TEXT>
Document 6 - file: str123115ex315.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.6
<SEQUENCE>7
<FILENAME>str123115ex316.htm
<DESCRIPTION>EXHIBIT 31.6
<TEXT>
Document 7 - file: str123115ex316.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>a2015neotargetcomp.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: a2015neotargetcomp.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>qlogo10ka02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: qlogo10ka02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>targetceocompcompare06.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: targetceocompcompare06.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>threeyearceocomp.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: threeyearceocomp.jpg

</DOCUMENT>
</SEC-DOCUMENT>