Western Gas Interstate Company

Fourth Revised Volume No. 1

Effective Date: 07/01/1998, Docket: MT98- 12-000, Status: Effective

First Revised Sheet No. 237 First Revised Sheet No. 237 : Effective

Superseding: Original Sheet No. 237

GENERAL TERMS AND CONDITIONS

(continued)

20.3 Requests for Interruptible Transportation Service

Western shall accept written requests for new

interruptible transportation service on a first-

come, first-served basis.

20.4 Requests for Transportation Service - The specific

information required from a Shipper for a valid

request for transportation service is set forth on

the Transportation Request Form which is set forth

following these General Terms and Conditions,

beginning on Sheet No. 343. The completed

Transportation Request Form must be delivered to:

Transportation and Exchange Services

Western Gas Interstate Company

211 North Colorado

Midland, TX 79701-4696

The form to be used for making requests for

transportation service is available from Western

upon request. Requests for new service shall be

reviewed expeditiously in accordance with this

FERC Gas Tariff and the Commission's Regulations.

Requests for firm transportation service hereunder

must be accompanied by a prepayment in the amount

of $5,000.00, applicable to the reservation

charges designated by the firm transportation Rate

Schedules in this FERC Gas Tariff. In the event

that a firm transportation Service Agreement is

not tendered by Western to Shipper within ninety

(90) days after Western receives the

Transportation Request Form, and Shipper requests

refund, Western will return the prepayment and

cancel the effectiveness of Shipper's request for

firm transportation service.

20.5 Limited Right to Purchase Firm Capacity - At any

time after the effectiveness of Western's

restructuring pursuant to Docket No. RS92-53-000,

any creditworthy party may offer in writing to pay

Western higher rate(s) for firm transportation

service than the rate(s) being paid by an existing

firm Shipper, not to exceed the maximum rates

applicable to such service pursuant to this FERC

Gas Tariff. If the existing firm Shipper is