Western Gas Interstate Company

Fourth Revised Volume No. 1

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

First Revised Sheet No. 200 First Revised Sheet No. 200 : Effective

Superseding: ORIGINAL SHEET NO. 200

GENERAL TERMS AND CONDITIONS

1. DEFINITIONS:

1.1 Alternative Receipt and Delivery Points - Those

Receipt and Delivery Points specified in Exhibit

"C" of a Shipper's Transportation Service

Agreement, which a Shipper may request from time

to time pursuant to Section 15.6(f) of those

General Terms and Conditions.

1.2 Billing Month - The term "Billing Month" shall

mean the period beginning at 12:01 AM Central

Standard Time on the first day of a calendar month

and ending at 12:01 AM Central Standard Time on

the first day of the next succeeding calendar

month.

1.3 BTU- The term "BTU" shall mean British Thermal

Unit.

1.4 Buyer - The term "Buyer" shall mean any of

Western's customers authorized to receive gas

sales service under any of the Sales Rate

Schedules pursuant to an executed service

agreement.

1.5 Commission or FERC - The terms "Commission" or

"FERC" shall mean The Federal Energy Regulatory

Commission, or successor agency.

1.6 Cost of Service - The term "Cost of Service" shall

mean the sum of the costs incurred by Western in

providing the services defined herein, including,

but not limited to, operation and maintenance

expenses, taxes other than income taxes,

depreciation, depletion and amortization, income

taxes and a reasonable return on Western's net

investment in assets utilized to provide the

services. Only for sales service will the term

"cost of service" include purchased gas costs.