Questar Pipeline Company

First Revised Volume No. 1

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

Eighth Revised Sheet No. 168 Eighth Revised Sheet No. 168 : Effective

Superseding: Seventh Revised Sheet No. 168

PART 3

GENERAL TERMS AND CONDITIONS

(Continued)

(c) Questar reserves the right to inject or withdraw gas up to

the amounts allocated by § 10.2(a) and (b) at any time that Questar requires

storage service to maintain load balancing and operational control of its

system.

Questar will notify shipper of the quantity of gas it can inject into or

withdraw from storage as early as possible, but no later than 12:00 noon of

the day gas is to be injected into or withdrawn from storage. If the

operation of its system dictates, Questar will notify shipper as soon as

possible of any changes in the quantity of gas that it can inject or withdraw

from storage for the account of shipper.

10.3 Commencement of Service. Starting no later than 9:00 a.m. on the

day immediately following the calendar day of receipt of nominations, Questar

will commence injecting or withdrawing quantities of gas, less any appropriate

reduction for fuel gas reimbursement.

10.4 Operating Information and Estimates. Upon request of Questar,

shipper shall submit its best estimates of daily, monthly and annual

quantities of gas to be injected into or withdrawn from storage together with

such operating data as Questar may require in order to schedule storage

service.