Westgas Interstate, Inc.

First Revised Volume No. 1

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Effective Date: 09/01/1993, Docket: RS92- 89-002, Status: Effective

Original Sheet No. 43 Original Sheet No. 43 : Effective

GENERAL TERMS AND CONDITIONS

gas received and equivalent volumes delivered shall be

determined. Shipper may install check measuring

equipment at its own cost and expense; provided such

equipment shall be installed in a manner not to

interfere with the operations of Transporter.

Transporter and Shipper, in the presence of each other,

shall have access to the other's measuring equipment at

all reasonable times but the reading, calibrating and

adjusting electronic computer components and/or

mechanical recording instruments and the changing of

charts shall be done only by the equipment owner or

such owner's representative, unless otherwise agreed

upon. Both Transporter and Shipper shall have the

right to be present at the time of any installing,

reading, cleaning, changing, repairing, inspecting,

testing, calibrating, or adjusting done in connection

with the other's measuring equipment; provided,

however, failure of either Transporter or Shipper to

witness such an operation shall not affect the validity

of such operation in anyway. The records from such

measuring equipment shall remain the property of the

party owning the equipment, but within 10 days of a

request, each will submit to the other for inspection

its records and charts, together with related

calculations. All records and charts shall be returned

within 30 days after receipt. The measurement

equipment of Shipper shall be for check purposes only

and, except as expressly provided in these General

Terms and Conditions, shall not be used in the

measurement of gas.

5.7 ORIFICE METERS. All orifice meters shall be

installed and gas volumes computed in accordance with

the standards prescribed in ANSI/API 2530 (Orifice

Metering of Natural Gas), which incorporates Gas

Measurement Committee Report #3 of the American Gas

Association, revised and reprinted, September 1967, and

any subsequent amendments Transporter may adopt.

5.8 ELECTRONIC FLOW COMPUTERS. Transporter may

install electronic flow computers to permit the direct

computation of gas flows without the use of charts.

5.9 NEW MEASUREMENT TECHNIQUES. If, at any time, a

new method or technique is developed with respect to

gas measurement or the determination of the factors

used in such gas measurement, such new method or