Columbia Gas Transmission LLC

Third Revised Volume No. 1

Effective Date: 03/03/2009, Docket: RP09-340-000, Status: Effective

Original Sheet No. 368 Original Sheet No. 368

GENERAL TERMS AND CONDITIONS (Cont'd)

26.12 Correction of Metering Errors. If, upon any test, any measuring equipment is found to be in error,

such that the resultant aggregate error in the computed volumes of gas and quantities of energy received or

delivered does not exceed two percent (2%), such errors may be taken into account in a practical manner in

computing the volumes of gas and quantities of energy received or delivered. All equipment shall, in any

case, be adjusted at the time of test to record correctly. If, however, the resultant aggregate error in the

computed volumes of gas and quantities of energy received or delivered exceeds two percent (2%), previous

Recordings of such equipment, and the corresponding volumes of gas and quantities of energy received or

delivered, shall be corrected to zero error for any period which is known definitely or agreed upon, but in

case the period is not known definitely or agreed upon, such correction shall be for a period extending

over one half of the time elapsed since the date of the last test, not exceeding a correction period of 16

Days.

26.13 Failure or Absence of Measuring Equipment.

(a) Failure of Measuring Equipment. In the event any measuring equipment is out of service, or

is found registering inaccurately and the error is not determinable by test, previous Recordings from such

equipment, or the volumes of gas or quantities of energy received or delivered through such equipment, shall

be estimated:

(1) by using the registration of any check meter or meters if installed and accurately

registering;

(2) in the absence of check meters, by correcting the error if the percentage of error is

ascertainable by calibration, special test or mathematical calculation;

(3) in the absence of check meters or the possibility of calibrations, by using Recordings

or quantities received or delivered through such equipment during periods under

similar conditions when the equipment was registering accurately; or

(4) as otherwise agreed by Transporter and Shipper.

(b) The Recordings from such equipment, or the volumes of gas and quantities of energy received or

delivered through such equipment, so estimated shall be used in determining the volumes of gas and quantities

of energy received or delivered for any known or agreed upon applicable period. In case the period is not

known or agreed upon, such estimated receipts or deliveries shall be used in determining the quantity of gas

received or delivered hereunder during the latter half of the period beginning on the date of the

immediately preceding test and ending on the date the measuring equipment has been adjusted to record

accurately. The Recordings of the measuring equipment during the first half of said period shall be

considered accurate in computing receipts or deliveries.

agree with Transporter to determine the volumes of natural gas and the quantities of energy received or

delivered pursuant to a method or methods, instead of agreeing to construct and install facilities, meters,

and measuring stations. Such method or methods that may be agreed to include, but are not limited to, the

minute pick up test with correction factor (or gauged pressure test), clip valve device, or test meter

methods.

26.14 Preservation of Records. Both Transporter and Shipper shall preserve all test data, charts, and

other similar Records for a period of at least two years, or such other longer period as may be required by

public authority.