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

Form 10-Q



|[X]   |    | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2002. 
|----- | -- | -------------------------------------------------------------------------------------------------------------------------------------------
|      | OR
|[   ] |    | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM _______ TO _______.





|QUESTAR GAS COMPANY                                   
|------------------------------------------------------
|                                                      
|(Exact name of registrant as specified in its charter)





|State of Utah(State or other jurisdiction of
incorporation or organization)                    |  | 87-0155877(IRS Employer Identification Number)
|---------------------------------------------------------------------------------------------- |  | ----------------------------------------------
|                                                                                               |  |                                               
|P.O. Box 45360
180 East 100 South
Salt Lake City, Utah(Address of principal executive offices) |  | 84145-0360(Zip code)                          

(801) 324-5555(Registrant's telephone number, including area code)



|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 October 31, 2002
|----------------------------- |  | ----------------------------------
|                              |  |                                   
|Common Stock, $2.50 par value |  | 9,189,626 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 I  FINANCIAL INFORMATION        
|-------------------------------------
|Item 1.  Financial Statements        
|                                     
|QUESTAR GAS COMPANY                  
|STATEMENTS OF INCOME                 
|(Unaudited)                          
|                                     
|                                     
|                                     
|                                     
|                                     
|                                     
|                                     
|REVENUES                             
|                                     
|OPERATING EXPENSES                   
|Cost of natural gas sold             
|Operating and maintenance            
|Depreciation                         
|Other taxes                          
|                                     
|                                     
|TOTAL OPERATING EXPENSES             
|                                     
|                                     
|OPERATING INCOME (LOSS)              
|                                     
|INTEREST AND OTHER INCOME            
|                                     
|DEBT EXPENSE                         
|                                     
|                                     
|INCOME (LOSS) BEFORE INCOME          
|TAXES                                
|                                     
|INCOME TAXES                         
|                                     
|                                     
|                                     
|NET INCOME (LOSS)                    
|                                     
|                                     
|                                     
|                                     
|See notes to the financial statements



| | QUESTAR GAS COMPANY                             
| | ------------------------------------------------
| | CONDENSED BALANCE SHEETS                        
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| | ASSETS                                          
| | Current assets                                  
| | Cash and cash equivalents                       
| | Accounts receivable                             
| | Inventories, at lower of average cost or market 
| | Gas stored underground                          
| | Materials and supplies                          
| | Purchased-gas adjustments                       
| | Prepaid expenses and other                      
| | Deferred income taxes - current                 
| |                                                 
| | Total current assets                            
| |                                                 
| | Property, plant and equipment                   
| | Less accumulated depreciation                   
| |                                                 
| | Net property, plant and equipment               
| |                                                 
| | Regulatory and other assets                     
| | Goodwill                                        
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| | LIABILITIES AND SHAREHOLDER'S EQUITY            
| | Current liabilities                             
| | Checks outstanding in excess of cash balances   
| | Notes payable to Questar Corp.                  
| | Accounts payable and accrued expenses           
| | Purchased-gas adjustments                       
| | Deferred income taxes - current                 
| |                                                 
| | Total current liabilities                       
| | Long-term debt                                  
| | Deferred income taxes and investment tax credits
| | Other liabilities                               
| | Common shareholder's equity                     
| | Common stock                                    
| | Additional paid-in capital                      
| | Retained earnings                               
| |                                                 
| | Total common shareholder's equity               
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| | See notes to the financial statements           



| | QUESTAR GAS COMPANY                             
| | ------------------------------------------------
| | CONDENSED STATEMENTS OF CASH FLOWS              
| | (Unaudited)                                     
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| | OPERATING ACTIVITIES                            
| | Net income                                      
| | Depreciation                                    
| | Deferred income taxes and investment tax credits
| | Gain from sale of assets                        
| |                                                 
| |                                                 
| | Change in operating assets and liabilities      
| |                                                 
| |                                                 
| | NET CASH PROVIDED FROM OPERATING                
| | ACTIVITIES                                      
| |                                                 
| | INVESTING ACTIVITIES                            
| | Capital expenditures                            
| | Proceeds from (cash used in) disposition        
| | of property, plant and equipment                
| |                                                 
| |                                                 
| | NET CASH USED IN INVESTING                      
| | ACTIVITIES                                      
| |                                                 
| | FINANCING ACTIVITIES                            
| | Checks outstanding in excess of cash balance    
| | Change in notes payable to Questar Corp.        
| | Payment of dividends                            
| |                                                 
| |                                                 
| | NET CASH PROVIDED FROM (USED IN)                
| | FINANCING ACTIVITIES                            
| |                                                 
| |                                                 
| | Change in cash and cash equivalents             
| | Beginning cash and cash equivalents             
| |                                                 
| |                                                 
| | Ending cash and cash equivalents                
| |                                                 
| |                                                 
| |                                                 
| |                                                 
| | See notes to the financial statements           



|QUESTAR GAS COMPANY                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NOTES TO FINANCIAL STATEMENTS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|September 30, 2002                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|(Unaudited)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Note 1 - Basis of Presentation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|The interim financial statements reflect all adjustments, which are in the opinion of management, necessary for a fair presentation of the results for the interim periods presented.  All such adjustments are of a normal recurring nature.  Due to the seasonal nature of the business, the results of operations for the three-, nine- and twelve-month periods ended September 30, 2002 are not necessarily indicative of the results that may be expected for the year ending December 31, 2002.  The impact of abnormal weather on earnings during the heating season is partially reduced by the operation of a weather-normalization adjustment. For further information refer to the financial statements and footnotes thereto included in the Company's annual report on Form 10-K for the year ended December 31, 2001.                                                                                                                                       
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Note 2 - New Accounting Standards                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Goodwill and Other Intangible Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Statement of Financial Accounting Standards 142 (SFAS 142) was issued June 2001.  SFAS 142, "Goodwill and Other Intangible Assets," addresses, among other things, the financial accounting and reporting for goodwill subsequent to an acquisition.  According to the new standard, amortization of goodwill was replaced by a requirement to test goodwill for impairment at least yearly or sooner if a specific triggering event occurs.  Questar Gas acquired $5,879,000 of goodwill on July 12, 2001, which was exempt from amortization under the new guidelines in SFAS 142.  Several minor adjustments were recorded in the allocation of the purchase price resulting in changes in the goodwill balance.  The Company adopted the remaining provisions of SFAS 142 as of January 1, 2002 and completed the first test with no indication of impaired goodwill. The yearly goodwill impairment test required by SFAS 142 will be conducted in the fourth quarter.
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Impairment or Disposal of Long-Lived Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|The Company adopted SFAS 144 "Accounting for the Impairment or Disposal of Long-Lived Assets" as of January 1, 2002 without an impact in the balance sheet, income statement or statement of cash flows.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Note 3 - Reclassifications                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Certain reclassifications were made to the 2001 financial statements to conform to the 2002 presentation.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  



|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Item 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations, and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Item 3.  Quantitative and Qualitative Disclosures About Market Risks                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|QUESTAR GAS COMPANY                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|September 30, 2002                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|(Unaudited)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Operating Results                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Following is a summary of financial and operating information for the Company:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|FINANCIAL RESULTS - (in thousands)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Revenues                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|From unaffiliated customers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|From affiliates                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Total revenues                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Cost of natural gas sold                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Margin                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Operating income (loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Net income (loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|OPERATING STATISTICS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Natural gas volumes (in thousands of                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Decatherms)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Residential and commercial sales                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Industrial sales                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Transportation for industrial customers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Total deliveries                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Natural gas revenue (per decatherm)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Residential and commercial                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Industrial sales                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Transportation for industrial customers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Heating degree days                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Actual                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Normal                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Colder (warmer) than normal                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Average temperature-adjusted usage per                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Customer (decatherms)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Number of customers at September 30,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Residential and commercial                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Industrial                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Total                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Revenues less cost of gas sold (margin)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Several events, including a one-time recovery of certain gas processing costs originally incurred in 1999, led to Questar Gas reporting higher margins in the 2002 periods presented when compared with the same periods of 2001.  The Public Service Commission of Utah (PSCU) allowed Questar Gas to recover $3.76 million in processing costs that it had previously denied. A change in the method of collecting bad debt costs benefited the margin by $.2 million in the third quarter and $2.3 million in the first nine months of 2002. Higher contributions of construction funds from new customers added $.7 million in the third quarter and $1.7 million in the first nine months of 2002.  Continued falling usage per customer in the 2002 periods partially offset the positive impact of these events.                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Questar Gas pays an affiliated company to remove carbon dioxide from its natural gas at a plant that was placed into service in June 1999.  The PSCU initially denied Questar Gas's request to recover $5.35 million in processing costs as part of its gas balancing account proceedings.  Questar Gas appealed to the Utah Supreme Court and filed for recovery of future processing costs in a general rate case in January 2000.  Subsequently, the PSCU approved the recovery of $5 million of processing costs per year beginning in August 2000, but did not allow recovery of the costs for the 14-month period between the startup of the plant and the general rate case.  The Utah Supreme Court ruled that the PSCU had erred in not allowing pass through treatment.  The PSCU ruled on a remand that Questar Gas be allowed to recover the $3.76 million plus approximately $.2 million of interest.
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|In another measure associated with a pass through rate filing in late 2001, the PSCU allowed Questar Gas to include the gas-cost portion of bad debt expenses in Utah's semi-annual gas cost filings effective January 1, 2002.  This change in procedure provides recovery of some of the growing bad debt charges experienced by the Company.  The measure was also approved by the Public Service Commission of Wyoming (PSCW) effective July 1, 2002.                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Declining usage per customer has been a persistent trend experienced by Questar Gas and was a major cause of a general rate increase filed in Utah on May 3, 2002. Average usage per customer on a temperature-adjusted basis has declined by 4% in the first nine months of 2002 compared with the same period of 2001.  The lower usage per customer resulted in a $.3 million decrease in the margin in the third quarter and $3.9 million in the first nine months of 2002 compared with the 2001 periods.  The effect of declining usage on total gas volumes delivered has been partially offset by a 2.7% increase in the number of customers served.                                                                                                                                                                                                                                                      
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Temperatures have been colder than normal in 2002 causing a 9% increase in the general-service gas volumes when compared with the first nine months of 2001.  However, the financial effect was mitigated by a weather-normalization adjustment (WNA).  Generally under the WNA, customers pay for non-gas costs based on normal temperatures.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Gas volumes delivered to industrial customers were 17% lower in the first nine months of 2002 due to reduced deliveries for manufacturing and power generation.  A major steel manufacturer suspended its gas deliveries when it filed for Chapter 11 bankruptcy and shut down its facilities early in 2002.  The Company received $812,000 in transportation revenues from this customer in 2001.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Expenses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Operating and maintenance expenses were higher in the 2002 periods when compared to the same periods in the previous year due primarily to higher labor-related costs and increased bad debt expenses. Labor-related costs, primarily for pension and medical benefits, increased $.4 million in the third quarter and $2.1 million in the first nine months of 2002.  Pension expenses have increased because of reduced returns earned on assets held in pension trust funds.  Bad debt expenses were $.7 million higher in the first nine months of 2002.  Bad debt costs have risen because of an increasing number of customers and a higher frequency of personal and business bankruptcies. Management is closely monitoring its receivables and is enforcing its credit policies to minimize future uncollectible accounts.                                                                               
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Higher depreciation expenses in the 2002 periods were caused by increased investment in computer equipment and software, which are depreciated over a relatively short life.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Debt expense was lower in the third quarter and nine months of 2002 when compared with the 2001 periods because of reduced short-term debt.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Interest and other income                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|The Company earns a return on the balances in the purchased-gas adjustment account if it is under-collected (recorded in current assets) and from its investment in gas stored underground.  Interest and other income was lower in the third quarter and year-to-date period of 2002 due to a lower inventory balance, an over-collected purchase-gas adjustment account and smaller from selling assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Income taxes                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|The effective income tax rate for the first nine months was 35.4% in 2002 and 34.0% in 2001.  The Company realized  $1.3 million and $1.4 million of non-conventional gas production tax credits in the first nine months of 2002 and 2001, respectively. Under current law, the federal income tax credit for producing gas from non-conventional sources will not apply to production after December 31, 2002.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Liquidity and Capital Resources                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Operating Activities                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Net cash provided from operating activities in the first nine months of 2002 was $102.1 million more than was generated during the first nine months of 2001.  The increase in cash flow resulted primarily from changes in operating assets and liabilities.  The balance in accounts receivable was lower at September 30, 2002 when compared with the balance a year earlier.  Lower gas prices caused the purchased-gas adjustment account to switch from an under-collected position in 2001 to an over-collected position in 2002.  The cost of gas stored underground decreased in the past 12 months.                                                                                                                                                                                                                                                                                                     
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Investing Activities                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Capital expenditures amounted to $42.5 million in the first nine months of 2002.  Capital expenditures for calendar year 2002 and 2003 are forecast to be $59.6 million and $85 million, respectively.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Financing Activities                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Net cash provided from operating activities in the first nine months of 2002 allowed the Company to finance capital expenditures, pay dividends and substantially reduce short-term debt. Capital expenditures for the remainder of 2002 are expected to be financed from net cash flow provided from operating activities and borrowings from Questar Corp.  The Company loans cash to Questar Corp. or borrows from Questar Corp. for short-term needs.  Such notes receivable and notes payable bear market interest rates.  The Company issues long-term debt to third parties and sells equity to Questar Corp. to meet long-term capital requirements.                                                                                                                                                                                                                                                      



|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Moody's  Downgrades Debt Rating                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Moody's downgraded debt ratings of Questar and subsidiaries one level completing a review that began May 2, 2002.  Also, Moody's established a stable outlook for each Questar entity.  Moody's downgraded the rating of Questar Gas's senior unsecured debt from A1 to A2.  A lower debt rating may increase Questar Gas's cost of debt.  However, Moody's revised rating is investment grade. The downgrade will not materially affect Questar Gas's growth strategy.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|General rate case filed                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Questar Gas filed a general rate case application with the PSCU on May 3, 2002.  The Company is requesting an increase in Utah natural gas rates effective January 1, 2003, to reflect $17.8 million of annualized revenues and includes a 12.6% return on equity.  Questar Gas earned a return on equity for 2001 of 9.1%.  The PSCU has currently authorized a return on equity of 11.0%.  A settlement has been presented to the PSCU, which would adopt a year end 2002 test year as opposed to using prior year expenses in setting future rates.  If the proposed settlements presented to the PSCU are adopted, the only remaining issues are the rate of return and capital structure.  The Division of Public Utilities has suggested a 10.5% return.  The Committee of Consumer Services proposed a 10% return on equity and proposed using short-term debt to reduce the equity component of the capital structure.  The Company expects a general rate order from the PSCU prior to year end.  Under Utah law, the general rate increase becomes effective 240 days after filing, if the PSCU does not render a decision by that date.
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Purchased-gas filings                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Effective January 1, 2002, the PSCU approved, on an interim basis, a $66.9 million decrease in natural gas rates that resulted in an 11% decrease for the typical residential Utah customer. The decrease was based on a significant drop in natural gas prices at the wellhead.  Also, effective January 1, 2002, the PSCW approved a $2.9 million pass-through gas cost decrease for Wyoming natural gas rates. Questar Gas routinely submits purchased-gas adjustment or "pass-through" filings.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|In May of 2002, the Company filed for gas-cost increases in both Utah and Wyoming.  Because of subsequent reductions in gas-price forecasts, the Company requested to suspend the increases.  No subsequent requests have been filed.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Forward-Looking Statements                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|This report includes "forward-looking statements" within the meaning of Section 27(A) of the Securities Act of 1933, as amended, and Section 21(E) of the Securities Exchange Act of 1934, as amended.  All statements other than statements of historical facts included or incorporated by reference in this report, including, without limitation, statements regarding the Company's future financial position, business strategy, budgets, projected costs and plans and objectives of management for future operations, are forward-looking statements.  In addition, forward-looking statements generally can be identified by the use of forward-looking terminology such as "may", "will", "could", "expect", "intend", "project", "estimate", "anticipate", "believe", "forecast", or "continue" or the negative thereof or variations thereon or similar terminology.  Although these statements are made in good faith and are reasonable representations of the Company's expected performance at the time, actual results may vary from management's stated expectations and projections due to a variety of factors.               



|Important assumptions and other significant factors that could cause actual results to differ materially from those expressed or implied in forward-looking statements include:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Changes in general economic conditions;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Changes in gas prices and supplies;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|The creditworthiness of our customers and their ability to pay for gas consumed;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Competition from other sources of energy;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Changes in rate and regulatory issues including receiving a reasonable rate of return and acceptance of a future test period by state rate regulators;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|The effects of environmental regulations;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Changes in suppliers' credit ratings including energy merchants;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Changes in the rate of inflation, interest rates and regulation of income and other taxes;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|The effect of natural phenomena;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|The effect of any terrorist activities;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|The effect of accounting policies issued periodically by accounting standard-setting bodies,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Adverse changes in the business or financial condition of the Company; and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|A lower credit rating.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Item 4.     Controls and Procedures(a) Evaluation of Disclosure Controls and Procedures.  The Company's Chief Executive Officer and Chief Financial Officer have evaluated the effectiveness of the Company's disclosure controls and procedures (as such term is defined in Rules 13a-14(c) and 15d-14(c) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) as of a date within 90 days prior to the filing date of this quarterly report (the "Evaluation Date").  Based on such evaluation, such officers have concluded that, as of the Evaluation Date, the Company's disclosure controls and procedures are effective in alerting them on a timely basis to material information relating to the Company required to be included in the Company's reports filed or submitted under the Exchange Act.
(b)  Changes in Internal Controls.  Since the Evaluation Date, there have not been any significant changes in the Company's internal controls or in other factors that could significantly affect such controls.





---



|Part II 
Other Information
|--------------------------



|Item 1.  Legal Proceedings.
           A description of the material legal proceedings, including a general rate case, for Questar Gas Company ("Questar Gas" or "the Company") is included in Part I, Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|Item 5.  Other Information.
                   a.  Alan K. Allred, age 52, was appointed to serve as Executive Vice President and Chief Operating Officer for Questar Gas Company and its affiliates in the Regulated Services unit effective November 1, 2002.  During his 24 years of service, Mr. Allred has served in a number of professional and supervisory positions, including Vice President, Business Development (October 2000 to February 2002) and Senior Vice President (February 2002 to November 2002).
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|b.  The Company's Board of Directors serves as the "audit committee" for purposes of required disclosure under Section 302 of the Sarbanes-Oxley Act of 2002.
|-------------------------------------------------------------------------------------------------------------------------------------------------------------



|c.  Additional Comments.                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Questar Corporation ("Questar"), the Company's parent, filed a shelf registration statement with the Securities and Exchange Commission on July 1, 2002.  The Commission staff reviewed this document and the periodic reports of Questar and its reporting affiliates.  As a result of this review process, the Company is making the following statements and disclosures that should be read in conjunction with its Annual Report on Form 10-K for the year ended December 31, 2001.



|Significant Customers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Questar Gas, in addition to serving over 735,000 residential and commercial customers, has several large transportation customers, including the Gadsby plant operated by Scottish Power (electric utility) in Salt Lake City; the Kennecott copper processing operations, located in Salt Lake County; the Geneva Steel manufacturing plant located in Utah County and the mineral extraction operations of Magnesium Corporation of America in Tooele County, west of Salt Lake City.  During 2001, these customers contributed $2.8 million of the $7.2 million revenues received by Questar Gas for transportation volumes.  For the first nine months of 2002, these customers contributed $2.0 million of the $5.4 million revenues received by Questar Gas for transportation volumes.  The Geneva Steel plant ceased operating early in 2002.



|Reserves.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Reserves reported by Questar Gas do not include any reserves attributable to third-party royalty interests.  Reserves are calculated and reported based on net revenue interests and include any royalty interests that Questar Gas owns.  A royalty interest is held by the lessor that leases acreage in return for a specified percentage of the value of production form the acreage.  The volumes associated with the royalty interest owner are generally transported by Questar Pipeline Company for use by the Company's customers.



|Cost of Service Definition.                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Wexpro conducts oil and gas development and production activities on certain producing properties located in the Rocky Mountain region under the terms of a settlement agreement.  The gas is often referred to as "cost of service."  Cost of service refers to Wexpro's legal entitlement to reimbursement of its costs and approved return on investment for operating the properties.  Such gas volumes are reflected in Questar Gas's rates at cost-of-service prices, rather than market prices.



|Competition and Favorable Price Advantage.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Questar Gas continues to enjoy a favorable price comparison with other energy sources used by or available to residential and commercial customers.  Energy sources available to these customers include electricity, oil, coal, propane, and wood.  This historic price advantage has permitted it to retain 90-95 percent of the residential space and water heating markets in its service area and to have close to 100 percent of the space heating and water heating offered to new homes within its service area that are connected to its system.



|Regulatory Assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Gains and losses on the reacquisition of debt are deferred and amortized as debt expense over the life of the replacement debt in order to match regulatory treatment.  The cost of the early retirement windows offered to employees of Questar Gas is capitalized and amortized over a five-year period in accordance with regulatory treatment.  Questar Gas records cumulative increases in deferred taxes as income taxes recoverable from customers.  Production taxes on cost-of-service production are accrued when the gas is produced and recovered from customers when taxes are paid.  Regulation allows the company to recover these costs, but does not provide for a return on the associated regulatory assets.  A list of regulatory assets at December 31, follows:



|                                        | 2001           | 2000    
|--------------------------------------- | -------------- | --------
|                                        |                |         
|                                        | (In Thousands)
|                                        |                |         
|Cost of reacquired debt                 | $  7,127       | $  7,621
|Early retirement costs                  | 6,153          | 7,973   
|Deferred production taxes               | 4,328          | 3,166   
|Income taxes recoverable from customers | 1,291          | 2,600   
|Other                                   | 312            | 999     
|                                        |                |         
|                                        | $19,211        | $22,359 
|                                        |                |         
|                                        |                |         
|                                        |                |         



|Item 6.  Exhibits and Reports on Form 8-K.
                   a.  The following exhibits are being filed as part of this report.
|--------------------------------------------------------------------------------------------------------------------------------



|Exhibit No. | Exhibit                                    
|----------- | -------------------------------------------
|            |                                            
|12          | Ratio of earnings to fixed charges         
|            |                                            
|99.1        | Certification of D. N. Rose and S. E. Parks



|b.  The Company filed a Current Report on Form 8-K dated August 14, 2002, announcing an order from the Public Service Commission of Utah authorizing it to recover certain gas processing costs.  No financial statements were filed with this report.
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------







|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 GAS COMPANY
   (Registrant)                                
|--------------------- |  | -------------------------------------------------------------------
|                      |  |                                                                    
|November       , 2002 |  |                                                                    
|                      |  |                                                                    
|                      |  | D. N. Rose
President and Chief Executive Officer                   
|                      |  |                                                                    
|                      |  |                                                                    
|November       , 2002 |  |                                                                    
|                      |  |                                                                    
|                      |  | S. E. Parks
Vice President, Treasurer, and 
Chief Financial Officer
|                      |  |                                                                    







|CERTIFICATION
|-------------



|I, D. N. Rose, certify that:
|----------------------------



|1. | I have reviewed this quarterly report on Form 10-Q of Questar Gas Company;
|-- | --------------------------------------------------------------------------



|2. | Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|3. | Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|4. | The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|a) | designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|b) | evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the "Evaluation Date"); and
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|c) | presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------



|5. | The registrant's other certifying officer and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function):
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|a) | all significant deficiencies in the design or operation of internal controls that could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|b) | any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls;
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------





|6. | The registrant's other certifying officer and I have indicated in this quarterly report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|                    |  |    
|------------------- |  | ---
|November     , 2002 |  | By:
|                    |  |    
|Date                |  |    
|                    |  |    









|CERTIFICATION
|-------------



|I, S. E. Parks, certify that:
|-----------------------------



|1. | I have reviewed this quarterly report on Form 10-Q of Questar Gas Company;
|-- | --------------------------------------------------------------------------



|2. | Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|3. | Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|4. | The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|a) | designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|b) | evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the "Evaluation Date"); and
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|c) | presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------



|5. | The registrant's other certifying officer and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function):
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|a) | all significant deficiencies in the design or operation of internal controls that could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|b) | any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls;
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------





|6. | The registrant's other certifying officer and I have indicated in this quarterly report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|                    |  |    
|------------------- |  | ---
|November     , 2002 |  | By:
|                    |  |    
|Date                |  |    
|                    |  |    









|List of Exhibits:
|-----------------





|Exhibit No. | Exhibit                                    
|----------- | -------------------------------------------
|            |                                            
|12          | Ratio of earnings to fixed charges         
|            |                                            
|99.1        | Certification of D. N. Rose and S. E. Parks





|Exhibit 12                                                                                                       |  |         |         |                        |         |  | 
|---------------------------------------------------------------------------------------------------------------- |  | ------- | ------- | ---------------------- | ------- |  | 
|Questar Gas Company                                                                                              |  |         |         |                        |         | 
|Ratio of Earnings to Fixed Charges                                                                               |  |         |         |                        |        
|(Unaudited)                                                                                                      |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         | 12 Months Ended        |         | 
|                                                                                                                 |  |         |         | September 30,          |         | 
|                                                                                                                 |  |         |         | 2002                   | 2001    |  | 
|                                                                                                                 |  |         |         |                        |         | 
|                                                                                                                 |  |         |         | (Dollars in Thousands) |         | 
|Earnings                                                                                                         |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|Income before income taxes                                                                                       |  | $44,262 | $43,077 |                        |        
|Plus debt expense                                                                                                |  |         | 22,844  | 23,341                 |         | 
|Plus allowance for borrowed                                                                                      |  |         |         |                        |        
|funds used during construction                                                                                   |  | 276     | 807     |                        |        
|Plus interest portion of rental expense                                                                          |  | 759     | 772     |                        |        
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         | $68,141                | $67,997 |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|Fixed Charges                                                                                                    |  |         |         |                        |         | 
|                                                                                                                 |  |         |         |                        |         |  | 
|Debt expense                                                                                                     |  |         |         | $22,844                | $23,341 |  | 
|Plus allowance for borrowed                                                                                      |  |         |         |                        |        
|funds used during construction                                                                                   |  | 276     | 807     |                        |        
|Plus interest portion of rental expense                                                                          |  | 759     | 772     |                        |        
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         | $23,879                | $24,920 |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|                                                                                                                 |  |         |         |                        |         |  | 
|Ratio of Earnings to Fixed Charges (1)                                                                           |  | 2.85    | 2.73    |                        |        
|                                                                                                                 |  |         |         |                        |         |  | 
|(1)  For the purposes of this presentation, earnings represent income before income taxes and fixed charges.    
|Fixed charges consist of total interest charges, amortization of debt issuance costs and losses from reacquiring
|Debt, and the interest portion of rental costs, estimated at 50% for the purpose of this calculation.            | 







|Exhibit 99.1
|------------



|CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
|----------------------------------------------------------------------------------------------------------------------





|In connection with the Quarterly Report of Questar Gas Company (the "Company") on Form 10-Q for the period ending September 30, 2002, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), D. N. Rose, President and Chief Executive Officer of the Company, and S. E. Parks, Vice President, Treasurer and Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|(1)  The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and
                    (2)  The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.                                                                                                                                                                                                                                            
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|November        , 2002                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|November        , 2002                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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|This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of  Section 18 of the Securities Exchange Act of 1934, as amended.
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