Midcoast Interstate Transmission, Inc.

Second Revised Volume No. 1

Effective Date: 10/01/1997, Docket: GT97- 71-000, Status: Effective

First Revised Sheet No. 77 First Revised Sheet No. 77 : Effective

Superseding: ORIGINAL SHEET NO. 77

GENERAL TERMS AND CONDITIONS (continued)

properly record the temperature of the gas flowing

through the meters. The arithmetic average of the

temperature(s) recorded shall be used in computing

gas volumes.

(e) The specific gravity of the gas delivered shall be

determined by the use of a recording gravitometer,

which shall be checked at least once each month, or

any other method mutually agreed upon.

(f) The deviation of the natural gas from Boyle's Law

shall be determined by the use of the tables of

formulae published by the American Gas Association

Par Research Project NX-19 corrected for carbon

dioxide and nitrogen, or any superseding applicable

tables published by the American Gas Association, or

any method or methods mutually agreed upon.

Determinations of the molecular percentage of N2 and

CO2 in the gas shall be made within thirty (30) days

after commencement of deliveries and at least

quarterly thereafter. The molecular percentage of N2

and CO2 thus determined will be used to determine the

supercompressibility factors during the ensuing

period, with corrections for specific gravity,

temperature and pressure. For the purpose of this

subparagraph, the results of the deviation tests of

the upstream pipeline delivering natural gas to

Transporter shall be accepted.

3.3 Determination of Receipts and Deliveries - For purposes of

determining the quantities of gas received at any Receipt

Point(s) and delivered at any Delivery Point(s),

Transporter will enter into an Operational Balancing

Agreement(s) ("OBA"), with any party that operates natural

gas facilities which interconnect with Transporter's

system ("OBA Party").

(a) (1) Allocation of Receipts - Unless prohibited by

applicable law or regulation, the quantities of

natural gas received by Transporter at any

Receipt Point(s) shall be allocated among

Shippers and services in accordance with

allocation procedures contained in the OBA

agreed to by Transporter and the upstream

pipeline serving that Receipt Point.