Questar Pipeline Company

First Revised Volume No. 1

Effective Date: 03/23/2001, Docket: RP01-233-000, Status: Effective

Third Revised Sheet No. 80 Third Revised Sheet No. 80 : Effective

Superseding: Second Revised Sheet No. 80

PART 1

GENERAL TERMS AND CONDITIONS

(Continued)

its website indicating the resulting monthly imbalance

incurred in the prior month and that portion which exceeds

ñ5% of the monthly receipt volumes or imbalance tolerance.

(ii) Following posting of the monthly

imbalance for the prior month, shippers will then have

through the last day of the current month to remedy any

imbalance exceeding the ñ5% imbalance tolerance. To remedy

an imbalance, shippers will have the ability to trade

imbalances pursuant to Section 12.4 or pay back the

imbalance in the current month pursuant to Section 12.5.

(iii) At the end of the month in which the

imbalance for the prior month was posted and after all

imbalance trades and pay back have been entered, shipper

will be cashed out, in accordance with 12.6, for that

portion that still exceeds the imbalance tolerance.

12.4 Imbalance Trading. All imbalance trading must be

conducted through Questline. If shipper desires to trade

imbalances on Questline, shipper must consent to Questar

releasing to others on Questline shipper's monthly imbalance

information.

(a) Once shippers have agreed to trade their

imbalances, each shipper must notify Questar by completing

an imbalance trading notice on Questline. This notice to

Questar will be deemed to be the shipper's direction to

Questar to make the imbalance trade on the shipper's

account. If the shippers' notices coincide, Questar will

adjust shipper's accounts to reflect the imbalance trade.

(b) Shippers are responsible for making whatever

arrangements they deem necessary to finalize and document

the imbalance trade among themselves.

incurred by a shipper if a shipper is unable to complete an

imbalance trad23e once shipper has notified Questar of the

imbalance trade.

(d) Shipper will be able to trade imbalances with

other Shippers that have an imbalance that will reduce each

Shipper's imbalance.