Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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Effective Date: 09/01/2009, Docket: RP09-862-000, Status: Effective

First Revised Sheet No. 413 First Revised Sheet No. 413

Superseding: Original Sheet No. 413

GENERAL TERMS AND CONDITIONS

(Continued)

23. RESTATEMENT OF QUANTITIES IN THERMAL UNITS

(a) To the extent that any provision of any Rate Schedule or related Service Agreement

references a rate or rates per Mcf, such provision shall be restated to reference a

rate or rates per dt.

(b) Except as otherwise set forth in this Section 23, for all purposes under Seller's FERC

Gas Tariff, including without limitation determining Seller's maximum daily delivery

obligation under Seller's FT, FT-G, FTN, GSS, LG-A, ESS and SS-2 Rate Schedules,

determining the dekatherm equivalents of quantities expressed in Mcf, and applying

rates expressed in amounts per dt, any "Daily Sales Entitlement", "Transportation

Contract Quantity", "TCQ", "Storage Demand", "Storage Demand Quantity", "Storage

Injection Quantity", "Storage Capacity Quantity", "Temporary Storage Demand",

"Temporary Storage Capacity Quantity", "Liquefaction Demand", or "Liquefaction Capacity

Quantity" referenced or set forth in any Rate Schedule or Service Agreement that is

expressed in Mcf shall be restated in dt by multiplying the quantity in Mcf set forth

in such Rate Schedule or Service Agreement by a conversion factor of 1.035 dt per Mcf.

(c) With regard to Seller's S-2 Rate Schedule, for purposes of determining Seller's maximum

daily delivery obligation thereunder, determining the dekatherm equivalents of

quantities expressed in Mcf, and applying rates expressed in amounts per dt, any

"Contract Storage Demand" or "Storage Capacity Quantity" referenced or set forth in

such Rate Schedule or related Service Agreement that is expressed in Mcf shall be

restated in dt by multiplying the quantity in Mcf set forth in such Rate Schedule or

Service Agreement by a conversion factor of 1.016 dt per Mcf.

24. GAS RESEARCH INSTITUTE VOLUNTARY CONTRIBUTIONS

Gas Research Institute (GRI), an Illinois not for profit corporation, has been organized for

the purpose of sponsoring Research, Development and Demonstration (RD&D) programs in the

field of natural and manufactured gas for the purpose of assisting all segments of the gas

industry in providing adequate, reliable, safe, economic and environmentally acceptable gas

service for the benefit of gas consumers and the general public. Pursuant to the GRI

Settlement as approved by the Commission in Docket Nos. RP97-149, et al., Seller will provide

a "check the box" option on invoices for Buyers to voluntarily contribute funds to GRI.

Seller shall remit to GRI all monies received by virtue of the Voluntary Contribution

Mechanism.