Midwestern Gas Transmission Company

Third Revised Volume No. 1

Effective Date: 01/01/2002, Docket: RP02- 72-000, Status: Effective

Original Sheet No. 232 Original Sheet No. 232 : Effective

GENERAL TERMS AND CONDITIONS

4. MEASURING EQUIPMENT (Continued)

4.4 Reasonable Care

All installation of measuring equipment applying to or affecting deliveries of

gas shall be made in such manner as to permit an accurate determination of the

quantity of gas delivered and ready verification of the accuracy of

measurement. Care shall be exercised by both parties in the installation,

maintenance, and operation of pressure-regulating equipment so as to prevent

any inaccuracy in the determination of the quantity of gas delivered under the

transportation contract.

4.5 Calibration and Test of Meters

The accuracy of Company's, Shipper's, or Balancing Party's measuring equipment

shall be verified at reasonable intervals and, if requested, in the presence of

representatives of Company, Shipper, or Balancing Party, but no party shall be

required to verify the accuracy of such equipment more frequently than once in

any thirty-day period. In the event that a party shall notify the other

parties that it desires a special test of any measuring equipment the parties

shall cooperate to secure a prompt verification of the accuracy of such

equipment. The expense of any such special test, if called for, shall be borne

by the requesting party if the measuring equipment tested is found to be in

error not more than two percent.

If, upon test, any measuring equipment is found to be in error by not more than

two percent, previous recordings of such equipment shall be considered accurate

in computing deliveries of gas, but such equipment shall be adjusted at once to

record accurately.

If, upon test, any measuring equipment shall be found to be inaccurate by an

amount exceeding two percent, at a recording corresponding to the average

hourly rate of flow for the period since the last preceding test, than any

previous recordings of such equipment shall be corrected to zero error for any

period which is known definitely, but in case the period is not known or agreed

upon, such correction shall be for a period extending over one-half of the time

elapsed since the date of last test, not exceeding a correction period of

sixteen days.

4.6 Correction of Metering Errors

4.6.1 Failure of Meters

In the event a meter is out of service or registering inaccurately, the

volume of gas delivered shall be determined:

(a) by using the registration of any check meter or meters, if installed

and accurately registering or, in the absence of (a);

(b) by correcting the error if the percentage of error is ascertainable

by calibration, tests, or mathematical calculation; or, in the

absence of both (a) and (b);

under similar conditions when the meter was registering accurately.