Western Gas Interstate Company

Third Revised Volume No. 1

Effective Date: 06/01/1993, Docket: RS92- 53-003, Status: Effective

Revised Original Sheet No. 279 Revised Original Sheet No. 279 : Superseded

GENERAL TERMS AND CONDITIONS

(continued)

provide Western a Nomination. No transportation service

will commence unless or until Western has received the

Nomination and the Shipper has been advised by Western's

gas dispatchers that the upstream and downstream operators

controlling delivery and receipt, respectively, of the gas

nominated have confirmed its availability, or portion

thereof, for delivery and receipt, respectively, and that

service is scheduled to commence.

19.2 Nominating a Change In Service - For purposes of scheduling

any change in transportation service, Shipper will provide

a Nomination indicating the changes to be made to the

service and the date the revised service is to commence.

For all proposed changes, the Nomination must be received

at least 24 hours prior to the requested commencement of

the revised service, unless a lesser period of time is

mutually agreed upon by Western and Shipper. Except in

instances of Force Majeure or change in service

necessitated by an inaccurate weather forecast, no change

in service will commence unless or until Western has

received the Nomination and the Shipper has been advised by

Western's gas dispatchers that the revised service, as in

Section 19.1, is scheduled to commence. Shipper shall

advise Western as soon as possible with respect to any

Force Majeure or adverse weather conditions affecting its

service.

19.3 Balancing Charges - Nothing in this Section 19.3 shall

limit Western's right to take actions as may be required to

adjust receipts and deliveries of gas in order to alleviate

conditions which threaten the integrity of its system,

including maintenance of service to higher priority

customers.

If Shipper fails to maintain a balance of receipts and

deliveries, Western shall impose one or more of the

balancing charges as applicable. Except with respect to

the balancing charge provided in (d) below, however, no

balancing charge shall be assessed unless Western has

notified Shipper that an imbalance has occurred or will

occur without corrective action and Shipper has failed to