Western Gas Interstate Company

Fourth Revised Volume No. 1

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

Second Revised Sheet No. 145 Second Revised Sheet No. 145 : Effective

Superseding: First Revised Sheet No. 145

RATE SCHEDULE RCS

FIRM TRANSPORTATION SERVICE - RELEASED CAPACITY

(continued)

12. RATES AND FEES:

(a) Transportation Rates - the Reservation and Commodity

Charges for any capacity released for a term of one

(1) year or more may not be greater than the maximum nor

less than the minimum tariff rates applicable to the

Rate Schedule pursuant to which the capacity is being

released, inclusive of all applicable reservation

and commodity surcharges and fees. If a Releasing

Shipper specifies in its Capacity Release Notice that

it will accept volumetric bids, the maximum volumetric

rate(s) per Dth for capacity released for a term of one

(1) year or more shall be equal to the maximum tariff

reservation rate, inclusive of all applicable surcharges and

fees, under the Rate Schedule applicable to the Releasing

Shipper divided by 30.4167 (12 months divided by 365 days).

13. BILLING:

(a) Western shall bill the Replacement Shipper the rate(s)

specified in the Released Capacity Service Agreement and

any other applicable charges, and such Replacement Shipper

shall pay the billed amounts directly to Western.

(b) Western shall bill the Releasing Shipper the Reservation

Charge, inclusive of any applicable reservation surcharges

and fees, associated with the Released Capacity pursuant

to its applicable contract or tariff rate(s), with a

concurrent credit for any Reservation Charge billed to the

Replacement Shipper pursuant to its Released Capacity

Service Agreement. In the event that the Replacement

Shipper does not make payment to Western of the Reservation

Charges due as set forth in its Released Capacity Service

Agreement in accordance with the General Terms and

Conditions of this FERC Gas Tariff and the terms of this

Rate Schedule, then Western shall notify the Releasing

Shipper of the amount due, and such amount shall be paid to