Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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Effective Date: 12/31/2008, Docket: RP09-158-000, Status: Effective

Original Sheet No. 472 Original Sheet No. 472

GENERAL TERMS AND CONDITIONS

(Continued)

51. OPERATIONAL CONTROLS

Seller shall implement Operational Controls through notices to Buyers, Receipt Point

Operators, and Receipt Point OBA Parties in order to maintain the operational flexibility of

Seller's system. Circumstances under which Seller may determine that an Operational Control

must be issued include, but are not limited to (1) ensuring current and future storage

capabilities and maintenance of line pack and (2) maintaining operational pressures and

adequate gas supplies required to provide an efficient and reliable service. Seller shall

determine in its sole judgment the action that is required to avoid an operating condition

which could jeopardize the operational flexibility of the system. At least 48 hours prior

to issuing notice of an Operational Control, Seller shall post a warning on 1Line

identifying the existing operating conditions which are jeopardizing the operational

flexibility of the system and which could cause Seller to issue notice of an Operational

Control, pursuant to Sections 51.1 and 51.2 below.

Seller may, on a non-discriminatory basis, direct Buyers, Receipt Point Operators, or

Receipt Point OBA Parties to take action through one or both of the following:

(a) Variance Notices pursuant to Section 51.1.

(b) Imbalance Makeup Notices (IMN) pursuant to Section 51.2.

Variance Notices and Imbalance Makeup Notices may be issued in addition to other actions

taken by Seller, including issuance of an OFO. Whenever a condition in an OFO, as set forth

in Section 52 of the General Terms and Conditions, conflicts with a condition in a Variance

Notice or IMN, the condition stated in the OFO shall override the Variance Notice or IMN.

In the event an OFO overrides the Variance Notice or IMN, the applicable penalty during the

period the OFO is in effect, shall be the OFO penalty as set forth in Section 52.5 of the

General Terms and Conditions.

Seller shall provide relevant information specific to the individual situation regarding the

issuance and lifting of each particular Variance Notice and IMN.

Contact person(s) must be available to receive communication from Seller on operating

matters at any time, twenty-four (24) hours a day, seven days a week on a year around basis.

Buyers, Receipt Point Operators, and Receipt Point OBA Parties shall be solely responsible

for any consequences arising if communication is not possible due to Buyers', Receipt Point

Operators' or Receipt Point OBA Parties' failure to make contact person(s) available.

51.1 Variance Notices. Variance Notices are used to ensure, to the extent possible, that

all quantities received at a Receipt Point shall be in accordance with the scheduled

and confirmed quantity at such point within the Variance Notice Tolerance Percentage

posted by Seller pursuant to Section 51.1(d). Seller shall state whether the notice

applies system wide, to an affected area, or to individual points, the Tolerance

Percentage and the duration of the notice.

(a) Seller shall state in its Variance Notice the notice type, which shall be

either a:

(i) Pipeline Oversupply Notice - Upon issuance of a Pipeline Oversupply

Notice, to the extent actual receipt quantities exceed scheduled receipt

quantities by more than the Variance Notice Tolerance Percentage defined

in Section 51.1(d) below, following the applicable notice period defined

in Section 51.1(c) below, the gas quantities received in excess of the

Tolerance Percentage shall be subject to the Variance Notice Penalty set

forth in Section 51.1(e) below; or