Western Gas Interstate Company

Fourth Revised Volume No. 1

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

Second Revised Sheet No. 140 Second Revised Sheet No. 140 : Effective

Superseding: First Revised Sheet No. 140

RATE SCHEDULE RCS

FIRM TRANSPORTATION SERVICE - RELEASED CAPACITY

(continued)

A Bidding Shipper may withdraw its bid at any time

prior to the expiration of the bidding period. Any

Bidding Shipper that withdraws a bid may not

subsequently submit a lower bid for that Released

Capacity. Any bid for Released Capacity shall be binding

on the Bidding Shipper until written or electronic notice

of withdrawal is received by Western. All qualified

bids for Released Capacity, but not the names of Bidding

Shippers, will be posted on Western's Internet Web

site.

9. AWARDING OF RELEASED CAPACITY:

Released Capacity shall be awarded to a Bidding Shipper

in accordance with the following:

(a) For the evaluation of bids submitted pursuant to the

capacity release timeline set forth in section 6 of

this Rate Schedule RCS, Releasing Shipper may select

one of the following methodologies to be used by

Western in determining the awards from the bid(s)

submitted: (i) highest rate; (ii) net revenue; or

(iii) present value. Releasing Shipper shall specify

its choice of bid evaluation methodology in its

Capacity Release Notice, or otherwise shall be subject

to subsection (c) of this section 9. Other choices of

bid evaluation methodology (including other releasing

shipper defined evaluation methodologies) can be

accorded similar timeline evaluation treatment at the

sole discretion of Western. However, Western is not

required to utilize other evaluation methodologies or

similar timeline treatment for other methodologies,

nor is Western held to the timeline set forth in

section 6 of this Rate Schedule RCS should the

Releasing Shipper elect another method of bid

evaluation.