Transwestern Pipeline Company, LLC

Third Revised Volume No. 1

Effective Date: 11/01/2004, Docket: RP05- 14-000, Status: Effective

Original Sheet No. 109 Original Sheet No. 109 : Effective

GENERAL TERMS AND CONDITIONS

(continued)

gas received or delivered and ready verification of the accuracy of measurement. Reasonable

care shall be exercised in the installation, maintenance and operation of any upstream or

downstream pressure regulating equipment which may be installed so as to avoid, so far as

practicable, any inaccuracy in the determination of the quantity of gas received or delivered

hereunder.

5.5 Failure of Meters

In the event a meter fails or is out of service, or registering inaccurately by more than one

percent (1%); the quantity of gas received or delivered hereunder shall be estimated:

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,

test, or mathematical calculation, or in the absence of both (A) and (B), then;

C. By estimating the quantity of receipts or deliveries during periods under similar

conditions when the meter was registering accurately.

5.6 Test of Meters

The accuracy of Measurer's measuring equipment, including chromatographs, shall be verified at

least quarterly by routine tests (or as otherwise agreed to by the parties), upon reasonable

notice to Non-Measurer, who shall have the right to witness. Non-Measurer shall verify the

accuracy of its check measuring equipment. In the event either party notifies the other that

it desires a special test of any measuring equipment, the parties shall cooperate to secure

prompt verification of the equipment.