Westgas Interstate, Inc.

First Revised Volume No. 1

Effective Date: 04/01/2003, Docket: RP00-545-001, Status: Effective

Third Revised Sheet No. 47 Third Revised Sheet No. 47 : Effective

Superseding: Second Revised Sheet No. 47

GENERAL TERMS AND CONDITIONS

(Continued)

8. BALANCING OF GAS

8.1 In the event that the nomination accepted by

Transporter under § 7 above differs from Shipper's

corresponding deliveries to Transporter by more than 5%,

Transporter may adjust any of Shipper's current and

subsequent nominations in order to balance the quantity of

gas received into Transporter's system with the quantity

delivered to Shipper or for Shipper's account.

8.2 Within 30 days after the termination of

transportation service, Transporter and Shipper shall

eliminate any imbalance between Shipper's receipts and its

deliveries. If Transporter's deliveries exceed its

receipts, Shipper shall provide Transporter with

sufficient quantities of gas to make up the difference.

8.3 Imbalance Netting and Trading. A Shipper may net

imbalance gas among its own service agreements as well

as trade imbalance gas with another Shipper to

eliminate or reduce its own imbalances or the

imbalances of both Shippers. Netting may consist of

summing (the accumulation of all imbalances above any

applicable tolerances for a Shipper or its agent) or

offsetting (the combination of positive or negative

imbalances above any applicable tolerance for a Shipper

or its agent). Any net or trade of imbalance gas shall

not cause Transporter to receive less quantities than

Transporter would have received had the trade not

occurred. Any imbalance trade shall be subject to the

following conditions and procedures: