National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

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Effective Date: 08/10/2008, Docket: RP08-442-000, Status: Effective

Second Revised Sheet No. 391 Second Revised Sheet No. 391

Superseding: First Revised Sheet No. 391

GENERAL TERMS AND CONDITIONS

14. ALLOCATION AND IMBALANCES (Cont'd.)

SWI = Southwest Index, which is the arithmetic average of the

index prices computed for South Texas deliveries to each of

Tennessee Gas Pipeline Company ("TGP"), Texas Eastern

Transmission, L.P. ("Texas Eastern") and Transcontinental Gas

Pipe Line Corporation ("Transco"), according to the following

methodology:

The TGP South Texas Index Price shall be computed by

averaging:

(i) an average of the "midpoint" price for each reported

day of the month applicable to gas delivered to TGP

(Texas, Zone 0), as reported in Platt's Gas Daily

Price Guide ("Platt's"), in a table entitled "Daily

Prices of Spot Gas Delivered to Pipelines";

(ii) the "index" price applicable to gas delivered to TGP

(Texas, Zone 0), as reported in Platt's, in a table

entitled "Prices of Spot Gas Delivered to Pipelines",

as of the first day of the month; and

(iii) for each issue of Natural Gas Intelligence Weekly Gas

Price Index ("NGIW") that contains a table of spot gas

prices for the applicable month, the average price

shown for spot gas prices delivered to TGP in South

Texas.

The Texas Eastern South Texas Index Price shall be computed by

averaging:

(i) an average of the "midpoint" price for each reported

day of the month applicable to gas delivered to Texas

Eastern (South Texas Zone), as reported in Platt's, in

a table entitled "Daily Prices of Spot Gas Delivered

to Pipelines";

(ii) the "index" price applicable to gas delivered to Texas

Eastern (South Texas Zone), as reported in Platt's, in

a table entitled "Prices of Spot Gas Delivered to

Pipelines", as of the first day of the month; and