Westgas Interstate, Inc.

First Revised Volume No. 1

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Effective Date: 09/01/1993, Docket: RS92- 89-002, Status: Effective

Original Sheet No. 21 Original Sheet No. 21 : Effective

RATE SCHEDULE IT

INTERRUPTIBLE TRANSPORTATION SERVICE

2.2 AUTHORIZED OVERRUN SERVICE. Upon request of

Shipper, Transporter may elect to receive, transport,

and deliver volumes of gas in excess of Shipper's CD.

Such service (a) shall be available only to the extent

it does not impair Transporter's ability to render

service under any other rate schedule (including

service up to the total contracted CD on this rate

schedule), (b) is interruptible, and (c) is subject

to the authorized overrun charge.

3. RATE PROVISIONS

3.1 SPECIFIED CHARGES. All charges for transportation

service under this rate schedule shall be as set forth

in the currently effective Statement of Rates, as

adjusted from time to time. The charges shall include

the following:

(a) COMMODITY CHARGE. Shipper shall pay the

appropriate commodity charge for all gas received

by Transporter for transportation. The commodity

charge shall be set forth in the transportation

service agreement or any amendment, and shall be

no more than the maximum nor less than the

minimum rate specified in the Statement of Rates.

(b) UNAUTHORIZED OVERRUN. Shipper shall pay the

unauthorized overrun rate set forth on Transporter's

Statement of Rates for all gas transported

that has not been authorized by Transporter.

(c) ADDITIONAL FACILITY CHARGE. If additional

facilities are required to initiate or provide

incremental service for Shipper under this rate

schedule, Transporter may elect to install such

facilities upon request by Shipper. Shipper shall

make full payment for such additional facilities,

including the income tax consequences associated

with such payment, unless otherwise provided in

the transportation service agreement. Shipper

shall acquire no ownership interest in any such

facilities.

(d) ANNUAL CHARGE ADJUSTMENT. The Annual Charge

Adjustment set forth in the Statement of Rates

shall apply to all quantities of gas transported

for Shipper under this rate schedule.