Western Gas Interstate Company

Fourth Revised Volume No. 1

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

First Revised Sheet No. 208 First Revised Sheet No. 208 : Effective

Superseding: ORIGINAL SHEET NO. 208

GENERAL TERMS AND CONDITIONS

(continued)

measurement equipment for a period of three (3)

years or such other period or periods as may be

prescribed with respect to them by regulatory

bodies having jurisdiction.

6. METERING ERRORS:

6.1 Correction of Metering Errors - (a) If, upon test,

Western's measuring equipment is found to be in

error by not more than two percent (2%), previous

recordings of such equipment shall be considered

accurate in computing deliveries, but such

equipment shall be adjusted at once to record

accurately. Errors exceeding two percent (2%) at

a recording corresponding to the average hourly

rate of flow for the period since the last

preceding test will be corrected. Previous

recordings of such equipment shall be corrected to

zero error for any period which is known

definitely or agreed upon. If the period is not

known or agreed upon, the correction shall be made

for a period of one-half of the time elapsed since

the last test but shall not exceed sixteen (16)

days.

(b) Measurement data corrections will be processed

within 6 months of the production month with a 3 month

rebuttal period. This standard will not apply in the

case of deliberate ommission or misrepresentation or

mutual mistake of fact. Parties' other statutory or

contractual rights shall not otherwise be diminshed

by this standard.