Questar Pipeline Company

First Revised Volume No. 1

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

Second Revised Sheet No. 152 Second Revised Sheet No. 152 : Effective

Superseding: First Revised Sheet No. 152

RATE SCHEDULE ISS

INTERRUPTIBLE STORAGE SERVICE

CLAY BASIN

transfer gas in storage under Section 6 of the General Terms

and Conditions of Part 3 to Questar's Tariff. This

provision, in and of itself, does not allow Questar to

negotiate terms and conditions of service.

4. REGULATORY FEES

Shipper shall reimburse Questar for all fees required

by the FERC or any other regulatory agency to implement the

service provided under this rate schedule. No reimbursement

will be required for regulatory fees generally applicable to

all shippers, or to any fee that does not specifically

relate to shipper's service under this rate schedule.

Questar will issue a statement to shipper, stating the

fees paid by Questar to implement the storage service. The

amount to be reimbursed shall be paid by shipper with the

next payment for service following receipt of Questar's

statement.

5. RATE CHANGES

Questar may file with the FERC to change the rates

listed on the Statement of Rates applicable to service under

this rate schedule. Questar shall begin charging the

changed rates for the service provided to shipper under this

rate schedule on the day the new rates become effective,

subject to any refunds, surcharges or other conditions that

are permitted or required by the FERC and subject to the

terms of the Clay Basin interruptible storage service

agreement. Nothing in this section limits shipper's rights

to contest the changes, nor limits the rights of shipper and

Questar to provide for changes in rates through the terms of

the Clay Basin interruptible storage service agreement.

6. GENERAL TERMS AND CONDITIONS

The General Terms and Conditions of this Part 3 and the

General Terms and Conditions of Part 1 of this tariff apply

to storage service provided under this rate schedule and are

incorporated by reference. If there is a conflict between

the General Terms and Conditions of Parts 1 and 3, then the

more specific terms of Part 3 shall apply.