Tuscarora Gas Transmission Company

Original Volume No. 1

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Effective Date: 01/20/2004, Docket: RP00-487-002, Status: Effective

Fourth Revised Sheet No. 37C Fourth Revised Sheet No. 37C : Superseded

Superseding: Third Revised Sheet No.37C

GENERAL TERMS AND CONDITIONS

2.37 Title. The term "Title," if not otherwise addressed in the

transporter's contract or tariff, is the term used to identify

the ownership of gas.

2.38 Operational Impact Area. "Operational Impact Area" is the term

used to describe a Transportation Service Provider's

designation of the largest possible area(s) on its system in

which imbalances have a similar operational effect.

2.39 Netting. "Netting" is the term used to describe the process of

resolving imbalances for a Service Requester within an

Operational Impact Area. There are two types of Netting:

- summing is the accumulation of all imbalances above any

applicable tolerances for a Service Requester or agent.

- offsetting is the combination of positive or negative

imbalances above any applicable tolerances for a Service

Requester or agent.

2.40 Critical Period

(a) A critical period may be declared (1) when the system pressure

on Transporter's pipeline system is falling and approaching a

level, or is expected to fall and approach a level, that is at

or below the minimum that Transporter considers necessary for

system integrity or to fulfill its firm contractual

obligations; or (2) when system pressure is rising and

approaching a level, or is expected to rise and approach a

level, at which Transporter may be unable to receive scheduled

deliveries from interconnecting pipelines; or (3) at any other

times when Transporter is unable, or anticipates that it may

not be able, to fulfill its firm contractual obligations or

otherwise when necessary to maintain the overall operational

integrity of all or a portion of its system.

(b) Transporter shall advise Shippers on its system when the

system is entering a critical period.

(c) Except for force majeure events and/or events or conditions

which threaten the integrity of Transporter's system or

Transporter's ability to meet its firm service obligations,

Transporter will provide notice of the commencement of a

critical period on its Internet Web site and by e-mail at

least twenty-four (24) hours in advance of the implementation

of the critical period ("Critical Period Notice"). This

Critical Period Notice will identify the type of penalties

that may be applicable during the critical period to prevent

the impairment of reliable service.

2.41 PL Rate Schedule. The term "PL Rate Schedule" shall mean the

PL Rate Schedule of Transporter's currently effective FERC Gas

Tariff, as may be revised from time to time, or any

superseding rate schedule(s).