Equitrans, L. P.

Original Volume No. 1

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Effective Date: 05/16/2010, Docket: RP10-616-000, Status: Effective

Tenth Revised Sheet No. 302 Tenth Revised Sheet No. 302

Superseding: Ninth Revised Sheet No. 302

GENERAL TERMS AND CONDITIONS (Continued)

31. TRANSPORTATION, GATHERING AND STORAGE RETAINAGE ADJUSTMENT

31.1 General. Equitrans shall retain a quantity of gas received under

Rate Schedules NOFT, FTS, STS-1 and ITS to reimburse Equitrans for

fuel, loss, and unaccounted for gas required to provide

transportation service for Customers ("Transportation Retainage").

Equitrans shall retain an additional quantity of gas from those

Customers under Rate Schedules NOFT, FTS, STS-1, ITS and, where

applicable, Rate Schedule AGS, to reimburse Equitrans for fuel,

loss, and unaccounted for gas required to provide gathering

service to those Customers utilizing Equitrans' gathering

facilities ("Gathering Retainage"). Equitrans shall retain a

quantity of gas tendered for injection under Equitrans Rate

Schedules SS-3, 115SS, 60SS, INSS and LPS to reimburse Equitrans

for loss and unaccounted for gas required to provide storage

service for Customers ("Storage Loss Retainage"). The quantities

retained, which shall be separately stated as a Transportation

Retainage Factor, a Gathering Retainage Factor, and a Storage Loss

Retainage Factor, are on Statement of Retainage Factors of this

Tariff. (Sections 31.2 and 31.3 only apply to Equitrans Big Sandy

Pipeline retainage factors)

31.2 Determination of Big Sandy Pipeline retainage factors. Equitrans

shall commence the tracking of its experience under its Big Sandy

Pipeline transportation retainage factor as of March 1, 2008.

Equitrans shall adjust the Big Sandy Pipeline transportation

retainage factor on a semi-annual basis to take into account both

prospective changes in retention requirements and over-recovered

and under-recovered retainage quantities from the preceding period

as described in Section 31.3 below, with the first such adjustment

to be effective twelve (12) months following March 1, 2008.

Equitrans will file the Big Sandy Retainage Factor with the

Commission semi-annually on or before January 29 and on or before

July 31 to become effective March 1 and September 1, respectively.

31.3 Calculation of Big Sandy Pipeline transportation retainage factor.

In each filing, Equitrans shall calculate the Big Sandy Pipeline

transportation retainage factor using the following methodology:

(a) Equitrans will estimate the total quantity of gas in

dekatherms required for fuel and loss and unaccounted for

volumes, for transportation during the prospective 6 months

("prospective retainage quantities").

(b) Equitrans will separately adjust the prospective retainage

quantities for transportation upward or downward if and to

the extent that Equitrans under-recovered or over-recovered

retainage quantities during the prior 6 month period.

Equitrans will determine the existence and amount of such

under-recovery or over-recovery by determining the retainage

quantities received from Customers, during the prior 6 month

period and subtracting the actual usage of gas for fuel, loss

and unaccounted for during the period. The remaining over

recovered or under recovered quantity, if any, will be

subtracted from or added to the prospective retainage

quantity.

retainage factors by dividing the adjusted retainage quantity

for transportation by the total throughput quantities

estimated to flow during the prospective 6 month period.