Western Gas Interstate Company

Fourth Revised Volume No. 1

Effective Date: 11/01/2003, Docket: RP00-461-002, Status: Effective

First Revised Sheet No. 136A First Revised Sheet No. 136A : Effective

Superseding: Original Sheet No. 136A

RATE SCHEDULE RCS

FIRM TRANSPORTATION SERVICE - RELEASED CAPACITY

(continued)

5. NOTICE BY SHIPPER OF PRE-ARRANGED RELEASE:

A Releasing Shipper shall deliver a Capacity Release Notice to Western

for posting on its Internet Web site that it has a pre-arranged release,

setting forth the following:

(a) Releasing Shipper's legal name, Service Agreement number, and the

name, title and telephone number of the individual responsible for

authorizing the release of capacity;

(b) the legal name of the Bidding Shipper that is party to the pre-

arranged release;

(d) the Receipt and Delivery Points at which the capacity is being

released, and the firm capacity to be released at each such point;

(e) the effective date and the period for the capacity to be released;

(f) whether the capacity is subject to recall by the Releasing Shipper,

and the terms under which the capacity may be recalled;

(g) the reservation and commodity rates the Bidding Shipper has agreed

to pay for the Released Capacity;

(h) any other applicable conditions of the release, including whether

the Bidding Shipper has complied with Western's creditworthiness

requirements; and

(i) whether the Bidding Shipper is an affiliate of the

Releasing Shipper or of Western.

The Replacement Shipper named may nominate at the next available

nomination cycle under the timeline set forth Section 6 of this

Rate Schedule and Section 19 of the General Terms and Conditions.

Provided the notice is received during normal business hours, Western

shall tender a Service Agreement to such Replacement Shipper within one

hour of the time it is notified of the arrangement.