Questar Pipeline Company

First Revised Volume No. 1

Effective Date: 07/25/2005, Docket: RP05-401-000, Status: Effective

Fourth Revised Sheet No. 78 Fourth Revised Sheet No. 78 : Effective

Superseding: Third Revised Sheet No. 78

PART 1

GENERNAL TERMS AND CONDITIONS

(Continued)

difference cannot be compensated for by Questar withdrawing gas from Clay

Basin or through the use of system line pack, Questar will adjust deliveries

to maintain system integrity. Questar will timely advise shipper of any

imbalances. Upon notification that adjustments are necessary, a shipper must

adjust its receipts and deliveries to correct or avoid any imbalance. Any

adjustment to receipts and deliveries by shipper, whether or not pursuant to

notification from Questar, will be nominated, scheduled and approved by

Questar's gas representatives according to Questar's scheduling procedures.

12.2 Daily Balancing. A shipper that does not have NNT service must

maintain a daily thermal balance between receipts and deliveries within the ±

5% daily imbalance tolerance.

Questar will notify a shipper upon determination that the shipper's

receipts and deliveries exceed the ± 5% daily imbalance tolerance. After

notification by Questar that an adjustment is necessary to keep its system in

balance, a shipper will be afforded reasonable opportunity to remedy its

imbalance consistent with existing operational conditions. If the imbalance

is not corrected within the time specified, Questar will take whatever action

it deems necessary to remedy the imbalance situation. Questar will make daily

imbalance information available through Questline each day for the prior gas

day.

If required to maintain operational stability and system integrity,

Questar will adjust all receipts and deliveries on its system, even if

shippers are within the ± 5% imbalance tolerance limits.

Adjustments at each transmission transfer meter will be made according

to the affected shippers' operational balancing agreement (OBA) or pre-

determined allocation arrangement (PDA) with operators upstream of Questar's

transmission system. Absent written notice to Questar of an OBA or PDA

reflecting agreement of all affected shippers' deliveries of gas to Questar

at a given transfer meter, adjustments will be made pro rata according to

each shipper's scheduled daily nomination. Questar must be