Western Gas Interstate Company

Fourth Revised Volume No. 1

Effective Date: 06/01/1997, Docket: RP97-160-001, Status: Effective

First Revised Sheet No. 251 First Revised Sheet No. 251 : Effective

Superseding: ORIGINAL SHEET NO. 251

FORM OF SERVICE AGREEMENT

FOR FIRM TRANSPORTATION SERVICE

(continued)

NOW THEREFORE, in consideration of the premises and of

the mutual covenants and agreements herein contained, the

sufficiency of which is hereby acknowledged, Western and

Shipper do covenant and agree as follows:

ARTICLE I

Quantity

1.1 The Maximum Daily Transportation Quantity (the

"MDTQ") shall be __________ Dth per day, which shall be

Shipper's Reservation Charge billing determinant, as

specified in Section 5 of Western's Rate Schedule FT-___.

The MDTQ shall be the largest daily quantity of gas Shipper

may tender for transportation in the aggregate to all

Primary Receipt Points, exclusive of Retention Quantities if

applicable, and receive at all Primary Delivery Points as

specified on Exhibits A and B hereto, and/or Alternate

Receipt and Delivery Points as specified on Exhibit C

hereto, on any Day.

1.2 The Maximum Annual Transportation Quantity

("MATQ") shall be __________ Dth per Service Year, which

is the product of 365 days (or 366 days in a leap year) and

the MDTQ, as specified in Section 1.1.