Arkansas Western Pipeline Company

First Revised Volume No. 1

Effective Date: 06/01/1997, Docket: RP97-187-006, Status: Effective

Substitute First Revised Sheet No. 11 Substitute First Revised Sheet No. 11 : Superseded

Superseding: First Revised Sheet No. 11

b. By correcting the error if the percentage of error is

ascertainable by calibration, special test or

mathematical calculation, or in the absence of both "a."

and "b." then;

c. By estimating the quantity of receipt or delivery based

on receipts or deliveries during preceding periods under

similar conditions when the meter was registering

accurately.

3.9 Both Transporter and Shipper shall preserve for a period of at

least three (3) years or such other period as may be required

by governmental authority, all test data, charts and other

similar records.

3.10 Transporter and Shipper intend to use the most accurate

feasible measurement techniques and devices available. When

newer techniques or devices become generally accepted in the

industry and can be utilized economically in connection with

the measurement of natural gas hereunder, it is agreed that

same shall be considered in updating the provision of this

Section 3 to utilize such measurement techniques and devices.

3.11 The closing of measurement shall be 5 Business Days after the

end of the prior Business Month. For treatment of measurement

prior period adjustments, treat the adjustment by taking it

back to the production month. A meter adjustment becomes a

prior period adjustment after the fifth Business Day following

the business month. Measurement data corrections should be

processed within 6 months of the production month with a 3

month rebuttal period. This standard shall not apply in the

case of deliberate omission or misrepresentation or mutual

mistake of fact. Parties' other statutory or contractual

rights shall not otherwise be diminished by this standard.

Prior period adjustment time limits shall be 6 months from the

date of the initial transportation invoice and 7 months from

date of initial sales invoice with a 3-month rebuttal period,

excluding government-required. rate changes. This standard

shall not apply in the case of deliberate omission or

misrepresentation or mutual mistake of fact. Parties' other

statutory or contractual rights shall not otherwise be

diminished by this standard.

4. QUALITY