SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q\A (Mark One) X QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1999 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM _____ TO _____ Commission File No. 0-14147 QUESTAR PIPELINE COMPANY (Exact name of registrant as specified in its charter) STATE OF UTAH 87-0307414 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) P.O. Box 45360, 180 East 100 South, Salt Lake City, Utah 84145-0360 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code:(801) 324-2400 Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes X No Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date. Class Outstanding as of April 30, 1999 Common Stock, $1.00 par value 6,550,843 shares Registrant meets the conditions set forth in General Instruction H(a)(1) and (b) of Form 10-Q and is filing this Form 10-Q with the reduced disclosure format. PART II OTHER INFORMATION Item 6. Exhibits and Reports on Form 8-K. (a) The following corrected exhibit has been filed as part of this report: Exhibit No. Exhibit 12. Ratio of earnings to fixed charges. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. QUESTAR PIPELINE COMPANY (Registrant) June 3, 1999 /s/ D. N. Rose D. N. Rose President and Chief Executive Officer June 3, 1999 /s/ S. E. Parks S. E. Parks Vice President, Treasurer, and Chief Financial Officer