Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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

Original Sheet No. 418 Original Sheet No. 418

GENERAL TERMS AND CONDITIONS

(Continued)

27. ANNUAL CHARGE ADJUSTMENT (ACA) PROVISION (Continued)

27.2 Definitions

(a) Effective Date. Seller shall adjust its rates annually to be effective each

October 1. Seller shall comply with the notice requirements of Section 154.207

of the Commission's Regulations.

(b) Unit Rate. Seller's Unit Rate shall be the unit rate used by the Commission to

determine the annual charge assessment to Seller adjusted, as appropriate, to a

thermal basis.

transportation rate schedules contained in Seller's Volume No. 1 and Volume No. 2

FERC Gas Tariff and all transportation performed under Part 284 of the

Commission's Regulations.

27.3 Procedures to Determine Annual Charge Adjustment (ACA) Unit Rate.

Seller shall determine the ACA Unit Rate by using the unit rate used by the Commission

to determine Seller's annual charge adjustment and adjust such unit rate, as

appropriate, to a thermal basis. Seller shall round such unit rate to the nearest

one-hundredth of one cent ($0.0001).

28. NOMINATIONS; ALLOCATION OF CAPACITY; CURTAILMENT OF SERVICE; AND CONFIRMATIONS

28.1 Nominations

(a) Buyer shall notify or cause Seller to be notified of Buyer's receipt and delivery

requirements under all firm and interruptible storage and transportation rate

schedules in advance of such requirements. Seller, in its sole judgment, may

waive any nomination and ranking deadlines, on a non-discriminatory basis, if

Seller determines that operating conditions permit. At a receipt or delivery

point, the lesser of rule (as identified in NAESB Standard 1.3.22, Version 1.3)

applies when confirming. With respect to Buyer's desired levels of service under

firm and interruptible transportation rate schedules, a nomination made through

electronic data interchange shall include all mandatory Commission-approved data

elements; for a nomination made through 1Line Buyer shall furnish Seller the

following:

(i) Buyer's Contract and ID;

(ii) the desired receipt and delivery points, the corresponding daily

quantities, and the schedule ranks;

(iii) the upstream contract and party who will deliver gas to Buyer, if

applicable;

(iv) the downstream contract and party who will receive gas from Buyer, if

applicable;

(v) the begin and end dates upon which such deliveries are desired, provided

the nomination begin and end dates are within the term of Buyer's

contract; and

(vi) transaction type.