UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WAHINGTON, 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 JUNE 30, 2004.      
|----- | -- | -------------------------------------------------------------------------------------------------------------------------------------------
|      | OR
|[   ] |    | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM _______ TO _______.

Commission File Number 1-935

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

(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]                                                                                                                                                                                                                                                                                                                                               
|                                                                                                                                                                                                                                                                                                                                                        
|Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Exchange Act).                                                                                                                                                                                                                                   
|Yes   [  ]                                                                                                                                                                                                                                                                                                                                              
|                                                                                                                                                                                                                                                                                                                                                        
|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 July 31, 2004
|----------------------------- |  | -------------------------------
|Common Stock, $2.50 par value |  | 9,189,626 shares               



|Registrant meets the conditions set forth in General Instruction H(1)(a) and (b) of Form 10-Q and is filing this Form 10-Q with the reduced disclosure format.
|--------------------------------------------------------------------------------------------------------------------------------------------------------------



Questar Gas Company

Form 10-Q for the Quarterly Period Ended June 30, 2004



TABLE OF CONTENTS







Page



PART I.

FINANCIAL INFORMATION



Item 1.

Financial Statements



Statements of Income



Condensed Balance Sheets



Condensed Statements of Cash Flows



Notes Accompanying Financial Statements



Item 2.

Managements Discussion and Analysis of

Financial Condition and Results of Operations



Item 4.

Controls and Procedures



PART II.

OTHER INFORMATION



Item 1.

Legal Proceedings



Item 5.

Other Information



Item 6.

Exhibits and Reports on Form 8-K



Signatures





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 Questar Gas Companys (Questar Gas or the Company) 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 and oil prices and changes in estimated quantities of gas and oil reserves; changes in rate-regulatory policies; regulation of the Wexpro Agreement; creditworthiness of counterparties; rate of inflation and interest rates; assumptions used in business combinations; weather and natural disasters; the effect of environmental and other regulation; effects of endangered or threatened species regulations; changes in customers' credit ratings; competition from other forms of energy, other pipelines and storage facilities; the effect of accounting policies issued periodically by accounting standard-setting bodies; terrorist attacks or acts of war; changes in the business or financial condition of the Company; and changes in credit ratings for Questar Gas.



|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 and amortization                          
|Rate-refund obligation                                 
|Other taxes                                            
|                                                       
|TOTAL OPERATING EXPENSES                               
|                                                       
|OPERATING INCOME (LOSS)                                
|                                                       
|Interest and other income                              
|                                                       
|Debt expense                                           
|                                                       
|INCOME (LOSS) BEFORE INCOME
TAXES AND CUMULATIVE EFFECT
|                                                       
|                                                       
|Income taxes                                           
|                                                       
|INCOME (LOSS) BEFORE
CUMULATIVE EFFECT                 
|                                                       
|Cumulative effect of accounting change                 
|for asset retirement obligations, net                  
|of income taxes of $204                                
|                                                       
|NET INCOME (LOSS)                                      
|                                                       
|See notes accompanying financial statements            



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



| | QUESTAR GAS COMPANY                                     
| | --------------------------------------------------------
| | CONDENSED STATEMENTS OF CASH FLOWS                      
| | (Unaudited)                                             
| |                                                         
| |                                                         
| |                                                         
| |                                                         
| | OPERATING ACTIVITIES                                    
| | Net income                                              
| | Adjustments to reconcile net income to net cash provided
| | from operating activities:                              
| | Depreciation and amortization                           
| | Deferred income taxes and investment tax credits        
| | Net loss from asset sales                               
| | Cumulative effect of accounting change                  
| |                                                         
| | Change in operating assets and liabilities              
| |                                                         
| | NET CASH PROVIDED FROM OPERATING                        
| | ACTIVITIES                                              
| |                                                         
| | INVESTING ACTIVITIES                                    
| | Purchase of property, plant and equipment               
| | Proceeds from disposition of assets                     
| |                                                         
| | NET CASH USED IN INVESTING ACTIVITIES                   
| |                                                         
| | FINANCING ACTIVITIES                                    
| | Checks in excess of cash balance                        
| | Long-term debt issued                                   
| | Long-term debt repaid                                   
| | Decrease in notes payable to Questar                    
| | Dividends paid                                          
| |                                                         
| | NET CASH USED IN FINANCING ACTIVITIES                   
| |                                                         
| | Change in cash and cash equivalents                     
| | Beginning cash and cash equivalents                     
| |                                                         
| | Ending cash and cash equivalents                        
| |                                                         
| | See notes accompanying financial statements             



QUESTAR GAS COMPANY

NOTES ACCOMPANYING FINANCIAL STATEMENTS

June 30, 2004

(Unaudited)



Note 1  Basis of Presentation of Interim Financial Statements



Questar Gass interim financial statements, with the exception of the condensed balance sheet at December 31, 2003, have not been audited by independent public accountants. The interim financial statements reflect all normal, recurring adjustments that are in the opinion of management, necessary for a fair presentation of the results of operations for the interim periods presented. The preparation of financial statements in conformity with accounting principles generally accepted (GAAP) in the United States requires management to make estimates and assumptions that affect the amounts of assets and liabilities and disclosure of contingent liabilities reported in the financial statements and accompanying notes. Actual results could differ from estimates.



The results of operations for the three-, six- and twelve-month periods ended June 30, 2004, are not necessarily indicative of the results that may be expected for the year ending December 31, 2004, due to the seasonal nature of the gas distribution business. The impact of abnormal weather on gas distribution earnings is significantly reduced by the operation of a weather-normalization adjustment. Interim financial statements do not include all of the information and notes required by GAAP for audited annual financial statements. For further information please refer to the consolidated financial statements and notes included in the Companys Annual Report on Form 10-K for the year ended December 31, 2003.



Note 2  Questar Gas Processing Dispute



On August 1, 2003 the Utah Supreme Court issued an order reversing a decision made by the Public Service Commission of Utah (PSCU) in August of 2000 concerning certain processing costs incurred by Questar Gas. The court ruled that the PSCU did not comply with Utah statute when approving a stipulation in Questar Gass general rate case filed in December 1999. The stipulation permitted Questar Gas to collect $5.0 million per year through May 2004 to recover a portion of the gas-processing costs.  The Committee of Consumer Services (Committee), a Utah state agency, appealed the PSCUs decision because the PSCU did not explicitly address whether the costs were prudent.



As a result of the courts order, Questar Gas recorded a liability for a potential refund to gas-distribution customers. The liability of $27.9 million, including $3.0 million recorded in the first half of 2004, reflects revenue received for processing costs from June 1999 through June 2004.  The court order did not have a material impact on the creditworthiness, cash flow or liquidity of Questar Gas.  Questar Gas has requested ongoing rate coverage for gas-processing costs in its gas-cost pass-through filings and is currently collecting these ongoing costs in rates. Questar Gas will continue to record a liability for the potential refund of the ongoing gas-processing costs until the issue is decided by the PSCU.



In January 2004 the Committee filed a petition for extraordinary relief with the Utah Supreme Court asking the Court to stop PSCU proceedings on this issue. The Utah Supreme Court denied the petition in March 2004, clearing the way for the PSCU to reopen proceedings to review the prudence of Questar Gass decision-making on gas processing.  Hearings on the issue were held with the PSCU during May 2004. On July 7, 2004, the PSCU stated it would issue an order in August 2004. The PSCU also ordered all parties to attempt to settle the recovery of processing costs from May 2004 forward. The PSCU also encouraged the parties to settle issues related to pre-May 2004 processing costs.



Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

June 30, 2004

(Unaudited)



Results of Operations



Questar Gas  a wholly-owned subsidiary of Questar Corporation (Questar)  distributes natural gas in Utah, southwestern Wyoming and southeastern Idaho. Following is a summary of financial results and operating information.



|                                       | 3 Months Ended | 6 Months Ended | 12 Months Ended
|-------------------------------------- | -------------- | -------------- | ---------------
|                                       | June 30,       | June 30,       | June 30,       
|                                       | 2004           | 2003           | 2004           
|FINANCIAL RESULTS - (in thousands)     |                |                |                
|Revenues                               |                |                |                
|From unaffiliated customers            | $102,235       | $   90,594     | $409,114       
|From affiliates                        | 1,017          | 568            | 2,154          
|Total revenues                         | 103,252        | 91,162         | 411,268        
|Cost of natural gas sold               | 65,697         | 54,481         | 282,427        
|Margin                                 | $  37,555      | $  36,681      | $128,841       
|Operating income (loss)                | ($   2,428)    | ($22,082)      | $  45,471      
|Income (loss) before cumulative effect | ($   3,999)    | ($16,458)      | $  22,312      
|Cumulative effect of accounting change |                |                |                
|Net income (loss)                      | ($  3,999)     | ($16,458)      | $  22,312      
|                                       |                |                |                



|                                        | 3 Months Ended | 6 Months Ended | 12 Months Ended
|--------------------------------------- | -------------- | -------------- | ---------------
|                                        | June 30,       | June 30,       | June 30,       
|                                        | 2004           | 2003           | 2004           
|                                        |                |                |                
|OPERATING STATISTICS                    |                |                |                
|Natural gas volumes (in Mdth)           |                |                |                
|Residential and commercial sales        | 11,633         | 12,999         | 53,317         
|Industrial sales                        | 2,011          | 2,201          | 5,025          
|Transportation for industrial customers | 8,208          | 9,421          | 18,146         
|Total deliveries                        | 21,852         | 24,621         | 76,488         
|                                        |                |                |                
|Natural gas revenue (per dth)           |                |                |                
|Residential and commercial              | $7.29          | $5.82          | $6.90          
|Industrial sales                        | 5.35           | 4.23           | 5.45           
|Transportation for industrial customers | 0.19           | 0.19           | 0.19           
|Heating degree days                     |                |                |                
|colder (warmer) than normal             | (16%)          | 1%             | 7%             
|Average temperature-adjusted usage per  |                |                |                
|customer (dth)                          | 17.2           | 17.2           | 66.5           
|Customers at June 30,                   |                |                |                
|Residential and commercial              | 770,472        | 748,512        |                
|Industrial                              | 1,223          | 1,282          |                
|Total                                   | 771,695        | 749,794        |                



Questar Gas lost $4.0 million in the second quarter of 2004 and reported income of $22.3 million in the first half of 2004 compared with a loss of $16.5 million in the second quarter of 2003 and income of $9.2 million in the first half of 2003.  The 2003 second quarter results included an expense of $22.0 million ($13.6 million after-tax) accrued for potential refund to customers for a dispute over gas-processing costs with the PSCU.  Questar Gas has continued to accrue a liability for this potential refund to customers pending an order from the PSCU which totaled $27.9 million as of June 30, 2004. Excluding these charges Questar Gass second quarter loss was $3.1 million in 2004 and $2.9 million in 2003. First half 2004 net income excluding the accrual was $24.2 million compared with $22.8 million for the first half of 2003.



Questar Gass margin increased by 2% in the second quarter of 2004, 1% in the first half of 2004 and decreased 3% in the 12 months ended June 30, 2004 compared with the 2003 periods. Following is a summary of major changes in Questar Gass margin for the second quarter, first half and 12 months ended June, 30, 2004 compared with the same periods of 2003.



|                                              | Margin Variance Analysis    
|--------------------------------------------- | ----------------------------
|                                              | 3 Months Ended
June 30, 2004
|                                              | (in thousands)              
|General rate case effective December 30, 2002 |                             
|New customers                                 | $659                        
|Change in usage per customer                  |                             
|Customer contribution revenues in 2002        |                             
|2002 recovery of gas-processing costs         |                             
|Other                                         | 215                         
|Increase (decrease)                           | $874                        



Effective December 30, 2002, the Public Service Commission of Utah (PSCU) approved an $11.2 million general-rate increase and an 11.2% allowed return on equity. The PSCU based the increase on November 2002 rate base, operating costs and usage per customer.



At June 30, 2004 Questar Gas was serving 771,695 customers. Customer growth remained above national averages at 2.9% over the prior year. Housing construction in Utah remained strong, driven by low mortgage-interest rates. Usage per customer, adjusted for normal temperatures, was flat in the second quarter of 2004 and declined 4% in the first half of 2004 and 2% in the 12 months ended June 30, 2004 compared with the 2003 periods.  Usage per customer has been decreasing due to more efficient appliances and homes and customer response to higher prices.



Weather, as measured in degree days, was 16% warmer than normal in the second quarter of 2004 and 7% colder than normal in the first half of 2004 compared with 1% colder than normal in the second quarter of 2003 and 9% warmer than normal in the first half of 2003. A weather-normalization adjustment on customer bills generally offsets financial impacts of moderate temperature variations.



Questar Gass results for the 12 months ended June 30, 2003, included, $3.8 million of recovery of previously denied 1999 gas-processing costs. The PSCUs 2002 order allowing the recovery of gas-processing costs is part of a continuing dispute, as discussed below.



Questar Gass results for the 12 months ended June 30, 2003, also included revenues of $6.0 million due to upfront contributions from customers. Accounting for customer contributions changed beginning in 2003 as a result of the 2002 Utah general rate case. Customer contributions are now recorded as a reduction of investment instead of revenues and general rates were increased to make up for the change in revenues.



Industrial deliveries declined 12% in the second quarter of 2004, 5% in the first half of 2004 and 14% in the 12 months ended 2004 compared with the 2003 periods. These changes were primarily driven by power-generation requirements.



Cost of natural gas sold increased 21% in the second quarter of 2004, 42% in the first half of 2004 and 39% in the 12 months ended 2004 compared with the 2003 periods.  These changes were due to increased volumes and increased natural gas purchase costs.  Questar Gas accounts for purchased-gas costs in accordance with procedures authorized by the PSCU and the Public Service Commission of Wyoming. Purchased-gas costs that are different from those provided for in present rates are accumulated and recovered or credited through future rate changes.  As of June 30, 2004, Questar Gas had a $25.3 million balance in the purchased-gas adjustment account representing gas costs incurred but not yet recovered from customers.



Operating and maintenance expenses increased 4% in the second quarter of 2004, 2% in the first half of 2004 and decreased 6% in the 12 months ended 2004 compared with the 2003 periods. Lower information technology and labor costs offset higher contracted services and bad-debt costs. Questar Gas has PSCU approval to record incremental pipeline integrity costs in a regulatory-asset account. The costs will be amortized over a five-year period beginning with the next general rate case or 2007, which ever occurs first. Operating and maintenance expenses per customer were $131 in the 12 months ended June 30, 2004 compared with $144 for the 2003 period.



The Utah Supreme Court, in August 2003, reversed earlier PSCU decisions in 2000 and 2002. The PSCU in August 2000 permitted Questar Gas to collect $5 million per year through May 2004 to recover a portion of the costs of processing certain gas volumes. The Btu content of natural gas entering parts of Questar Gass system has been declining over the past decade. Processing provides a multi-year transition period during which customers will be required to have their appliances adjusted to ensure safe and efficient operation. In August 2002 the PSCU allowed an additional $3.8 million of recovery from a previous period. As a result of the 2003 Utah Supreme Court order, Questar Gas recorded a $24.9 million before-tax liability in 2003 and an additional $3.0 million liability in the first half of 2004. The liability reflects a potential refund of gas processing costs collected in rates from June 1999 through June 2004 plus interest. The plant must be operated to protect customers; therefore, management believes past and future costs of gas processing are recoverable in rates. Questar Gas requested ongoing rate coverage for these costs in its last two gas pass-through filings and continues to collect $5 million per year. On July 7, 2004 the PSCU issued an order indicating that they would issue their final order in August 2004.  They ordered the parties in the case to attempt to settle the issue of ongoing cost coverage.  They also invited the parties to settle the issue of past cost coverage.



Depreciation expense increased 6% in the second quarter of 2004, 1% in the first half of 2004 and was flat in the 12 months ended 2004 compared with the 2003 periods. Retirements of plant assets have offset the depreciation impact of plant additions.



Accounting change

On January 1, 2003 the Company adopted a new accounting standard, SFAS 143, Accounting for Asset Retirement Obligations, and recorded a cumulative effect that reduced net income by $334,000.



Liquidity and Capital Resources



Operating Activities

Net cash provided from operating activities decreased 6% in 2004 compared with 2003 due to noncash adjustments to income. Higher realized prices for gas in 2004 resulted in an increase in the purchased-gas adjustment account representing gas costs incurred but not yet recovered from customers.



Investing Activities

Capital expenditures increased 9% in 2004 compared with 2003. Questar Gas expects capital expenditures to reach $81.8 million in 2004. The Company replaced an aging customer information system.



Financing Activities

Net cash flow provided from operating activities was more than sufficient to fund capital expenditures and pay dividends in the first half of 2004. The excess cash flow was used to repay debt. As a result total debt was 50% of total capital at June 30, 2004. Questar Gas repaid $17 million in medium-term notes carrying an 8.12% interest rate. A call premium of $690,000 will be amortized over the remaining life of the original notes in accordance with regulatory treatment. Questar Gas borrowed $110 million and redeemed $41 million of long-term debt in the first quarter of 2003 and an additional $64 million in April 2003.



The Company anticipates funding 2004 capital expenditures from cash flow from operations.



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, including its consolidated subsidiaries, 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.



See Note 2 in the Notes accompanying the Company's Consolidated Financial Statements included under Item 1.  Financial Statements in Part I of this report for a discussion of the regulatory proceedings involving gas processing costs incurred by Questar Gas.  These proceedings have been discussed in quarterly, annual and current reports filed since August 1, 2003.



Item 5.  Other Information.



On May 18, 2004, Martin H. Craven, age 52, was elected as the Company's Treasurer, replacing S. E. Parks.  Mr. Parks will continue to serve as the Company's Chief Financial Officer.  Mr. Craven also serves as the Treasurer of Questar Corporation and all affiliates



Item 6.  Exhibits and Reports on Form 8-K.



a.

The following exhibits are filed as part of this report:



Exhibit No.

Exhibit



31.1.

Certification signed by Alan K. Allred, Questar Gas's Chief Executive Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.



31.2.

Certification signed by S. E. Parks, Questar Gas's Chief Financial Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.



b.

The Company filed a Current Report on Form 8-K dated July 7, 2004, reporting the receipt of an order from the Public Service Commission of Utah indicating that it would issue an order in the pending gas-cost processing case before the end of August 2004 and encouraging the parties to engage in settlement discussions.



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)





August 12, 2004

/s/Alan K. Allred



Date

Alan K. Allred

President and Chief Executive Officer







August 12, 2004

/s/S/ E. Parks



Date

S. E. Parks

Vice President and Chief Financial Officer





Exhibits List



Exhibit No.

Exhibit



31.1.

Certification signed by Alan K. Allred, Questar Gas's Chief Executive Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002



1.1.

Certification signed by S. E. Parks, Questar Gass Chief Financial Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.



Exhibit No. 31.1.



CERTIFICATION



I, Alan K. Allred, 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.



August 12, 2004

/s/A. K.Allred



Date

Alan K. Allred

President and Chief Executive Officer

#





Exhibit No. 31.2.





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.



August 12, 2004

/s/S. E. Parks



Date

S. E. Parks

Vice President and Chief Financial Officer

#