Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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Effective Date: 10/01/2009, Docket: RP09-971-000, Status: Effective

Second Revised Sheet No. 138 Second Revised Sheet No. 138

Superseding: First Revised Sheet No. 138

RATE SCHEDULE WSS-OPEN ACCESS

Washington Storage Service-Open Access

(Continued)

8. BASE GAS

This provision shall not apply to releases of capacity under Section 42 of the General Terms

and Conditions that are not permanent releases for the remaining term of the Service

Agreement.

8.1 Seller's Obligation to Provide Base Gas

Seller is obligated to maintain sufficient base gas to support total top gas capacity

entitlements of its customers.

8.2 Right to Certain Buyers to Purchase Base Gas

Seller shall be the owner of Base Gas injected into the Washington Storage Field;

however, Buyers who are former Rate Schedule WSS customers, that have converted to

service under this Rate Schedule, shall be entitled to purchase and receive the

quantity of Base Gas as shown below, when such Buyer no longer receives service from

the Washington Storage Field, less two (2) percent of such quantity for injection and

withdrawal fuel. Buyer shall pay Seller for such gas received a charge per dt equal

to the sum of (1) the average demand charge per dt credited to Buyer's bill at the

time gas was injected into storage as Base Gas, (2) the average commodity charge in

effect under the applicable Rate Schedule for each Buyer at the time gas was injected

into storage as Base Gas, and (3) the Quantity Withdrawal Charge in effect at the time

of withdrawal.

Base Gas attributable to each Buyer is as follows: MCF @ 14.73 PSIA

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Atlanta Gas Light Company 2,329,800

Atmos Energy Corporation 149,718

Brooklyn Union Gas Company 5,798,096

Chesapeake Utilities Corp. d/b/a Delaware Division 53,585

Chesapeake Utilities Corp. d/b/a Maryland Division 12,426

City of Danville, Virginia 98,549

Clinton-Newberry Natural Gas Authority 155,320

City of Greenwood, South Carolina 23,298

City of Laurens, South Carolina 33,471

City of Shelby, North Carolina 9,708

City of Union, South Carolina 17,862

Consolidated Edison Company of N.Y. Inc. 4,629,190

Delmarva Power & Light Company 432,312

Fort Hill Natural Gas Authority 77,660

KeySpan Energy Delivery Long Island 1,672,962

Municipal Gas Authority of Georgia 11,649

Owens-Corning Sales, LLC 291,225

Patriots Energy Group 317,323

PECO Energy Company 1,383,433

Philadelphia Gas Works 1,251,530

Piedmont Natural Gas Company, Inc. 3,521,080

Pivotal Utility Holdings, Inc. 1,183,242

Public Service Company of North Carolina 1,048,410

South Carolina Electric & Gas Co. 168,052

Southwestern Virginia Gas Company 10,096

UGI Central Penn Gas, Inc. 194,150

Virginia Natural Gas, Inc. 271,810

Washington Gas Light Company 723,706