Questar Pipeline Company

First Revised Volume No. 1

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

Sixth Revised Sheet No. 166 Sixth Revised Sheet No. 166 : Effective

Superseding: Fifth Revised Sheet No. 166

PART 3

GENERAL TERMS AND CONDITIONS

(Continued)

10. NOMINATION, ALLOCATION AND COMMENCEMENT OF SERVICE

10.1 Nomination. When nominating quantities of gas for injection into

or withdrawal from Clay Basin, shipper shall follow the nomination procedures

stated in the General Terms and Conditions of Part 1 of this tariff.

To the extent that it is operationally feasible and so long as other

shippers' scheduled nominations are met, Questar will adjust nominations for

the gas day for NNT service, subject to the terms of § 9 of the General Terms

and Conditions of Part 1.

10.2 Allocation.

(a) Allocation of the quantity of gas that can be injected daily

into storage on a firm basis during the May 1 through October 31 injection

period shall be calculated as follows:

INJECTION ALLOCATION = (X/Y)*Z

X = Firm shipper's annual working gas

Y = Sum of the annual working gas of all firm shippers

Z = Available injection capacity on any day 1/

* = Multiplication operator

NOTE: Working gas includes Questar's reserved capacity.

If any Rate Schedule FSS shipper elects, on any day, not to utilize all

or any portion of its injection allocation, the amount not used shall be

allocated to all remaining Rate Schedule FSS shippers that desire additional

injection allocation by using the above formula as modified to exclude the

data related to those shippers who have received all of the injection capacity

that was requested by them.

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1/ Available injection capacity will vary depending upon operating

conditions; principally, compressor suction and discharge pressures and the

designated main line receipt point (currently either Storage Main Line No. 70

or Main Line No. 58).