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. 114 Original Sheet No. 114 : Effective

Form of Service Agreement for Rate Schedule IT

APPENDIX B

TO THE TRANSPORTATION SERVICE AGREEMENT

BETWEEN

_______________________, AS SHIPPER

AND

WESTGAS INTERSTATE, INC., AS TRANSPORTER

DATED ________________________

Rate Confirmation

To: __________________

__________________

__________________

In accordance with 5.2 of the Transportation Service

Agreement dated _______________, 19___, Transporter confirms

that the rate for gas delivered during the month(s) of

______________________, 19 ___, shall be:

Thereafter, the price shall be the maximum applicable rates

in Transporter's Statement of Rates.

WESTGAS INTERSTATE, INC.

By_______________________________

Its______________________________