Exhibit No. 12.

Questar Pipeline Company and Subsidiaries
Ratio of Earnings to Fixed Charges
(Unaudited)


                                                12 months ended March 31,
                                                    2000        1999
                                                (Dollars in Thousands)
                                                      
Earnings

Income (loss) before income taxes                  ($13,402)    $44,325
Plus debt expense                                    17,988      15,199
Plus allowance for borrowed
   funds used during construction                     2,605       1,326
Plus interest portion of rental expense                 201         342
                                                     $7,392     $61,192

Fixed Charges

Debt expense                                        $17,988     $15,199
Plus allowance for borrowed
   funds used during construction                     2,605       1,326
Plus interest portion of rental expense                 201         342
                                                    $20,794     $16,867

Ratio of Earnings to Fixed Charges                     0.36        3.63