Nora Transmission Company

First Revised Volume No. 1

Effective Date: 06/01/1997, Docket: RP97-105-001, Status: Effective

First Revised Sheet No. 109 First Revised Sheet No. 109 : Superseded

Superseding: Original Sheet No. 109

GENERAL TERMS AND CONDITIONS (Continued)

so affected to be in error by an amount exceeding two

percent (2%), at a recording corresponding to the average

hourly rate of flow through the individual billing meter or

meters affected, for the period since the last preceding

test, then any previous registration, integration, or

recordings of such billing meter or meters affected shall be

corrected to zero error for any part of the period since the

last test which such error is known to have existed or which

may be agreed upon in actual practice by the operating

representatives of the parties. In case the period of such

error is not known definitely or is not agreed upon, such

correction shall be for a period of one-half («) of the

time elapsed since the date of the last such test, but not

exceeding a correction period of six (6) months.

(b) If no tests have been performed to determine the degree of

inaccuracy, or if measuring equipment is out of service, the

quantity of gas shall be estimated:

(1) By using the registration of any existing and agreed

upon check equipment considered by the parties

concerned to be registering accurately; or, in the

absence of such facilities

(2) By correcting the error if the quantity or percentage

of error is ascertainable by calibration, test, or

mathematical calculation; or, if neither of the two (2)

foregoing procedures are applicable

(3) By relating the quantity of delivery to deliveries

during periods under similar conditions when the

measuring equipment was deemed to have been

registering accurately.

5.7 Preservation of Records

Each party shall preserve for a period of at least two (2) years

all test data, charts, and other similar records.

6. INVOICING

6.1 Pipeline shall render invoices to Customer on or before the ninth

(9th) business day of each month for all gas delivered and any

reservation charges incurred during the preceding month

using the best available data. Invoices may be rendered by

mail, fax, electronic communication, or EDI.