QUESTAR PIPELINE CO

Q: Jun 30 2016

Q: Mar 31 2016

FY: Dec 31 2015

FY: Dec 31 2015

Q: Sep 30 2015

Q: Jun 30 2015

Q: Mar 31 2015

FY: Dec 31 2014

Q: Sep 30 2014

Q: Jun 30 2014

Q: Mar 31 2014

FY: Dec 31 2013

Q: Sep 30 2013

FY: Dec 31 2012

Q: Jun 30 2013

Q: Mar 31 2013

FY: Dec 31 2012

Q: Sep 30 2012

Q: Jun 30 2012

Q: Mar 31 2012

1.01,8.01

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

5.02,9.01

8.01

8.01,9.01

8.01,9.01

8.01,9.01

8.01,9.01

8.01,9.01

5.02

8.01

5.02

1.01,9.01

8.01,9.01

Regulation FD Disclosure

5.02,7.01,9.01

7.01,9.01

8.01,9.01

8.01

No description available

No description available

No description available

No description available

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Notice of Effectiveness

Registration statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

No description available

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Amended Initial Registration Statement

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Free Writing Prospectus

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Additional Information for Proxy Statement/ Votes

Letter from the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

Annual Report Scanned (Paper)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC