Questar Southern Trails Pipeline Company

Original Volume No. 1

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Effective Date: 03/01/2003, Docket: RP02-318-002, Status: Effective

First Revised Sheet No. 89 First Revised Sheet No. 89 : Effective

Superseding: Original Sheet No. 89

GENERAL TERMS AND CONDITIONS

Greater than 15% Index * 1.70 Index * 0.30

(d) Southern Trails shall credit the account of

Shipper for any cashout amounts due Shipper for imbalances

due Shipper.

(e) Shipper shall pay Southern Trails for any

cashout amounts due Southern Trails for imbalances due

Southern Trails.

(f) Upon payment or crediting of the appropriate

cashout amounts, Shipper's imbalance will be reduced by the

amount that exceeds the imbalance tolerance.

15.7 Credit of Penalty and Cashout Revenues. Any

penalty or cashout revenues that exceed gas purchase and

applicable costs will be credited to all non-offending

Shippers in proportion to the revenue contribution from each

non-offending shipper during the annual period of January

through December. If gas purchase and applicable costs

exceed revenues, the costs exceeding revenues will be rolled

into subsequent annual costs, as an offset to revenues, until

eliminated. Any excess revenues collected for the period

January through December will accrue interest from the date

of collection until the date credited, using the current

Federal Energy Regulatory Commission interest rate as defined

in 18 C.F.R. Section 154.501(d) and be credited to Shippers'

invoices within 90 days from the end of each calendar year.

15.8 Imbalances on Inactive Contracts. If Shipper fails

for a period of 60 days to make a nomination on an

existing service agreement with an outstanding imbalance,

Southern Trails shall, after notification to Shipper either

purchase or sell Shipper's imbalance inclusive of the ñ2.5%

imbalance tolerance under 15.6 and any excess revenues will

be credited according to 15.7 above.

15.9 Balancing at Service Agreement Termination.

Following the termination of its agreement, Shipper shall

correct any remaining cumulative imbalance in receipts and

deliveries within 30 days after notification by Southern

Trails that an excess or deficiency exists. If at the end of

the 30-day period there remains an imbalance that has not

been eliminated by Shipper, Southern Trails shall purchase or

sell Shipper's imbalance inclusive of the ñ2.5% imbalance

tolerance under 15.6 and any excess revenues will be

credited according to 15.7 above.