Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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Effective Date: 04/01/2010, Docket: RP10-395-000, Status: Effective

Fourth Revised Sheet No. 54 Fourth Revised Sheet No. 54

Superseding: Third Revised Sheet No. 54

FIRM TRANSPORTATION SERVICE RATES

UNDER RATE SCHEDULE FT APPLICABLE TO

LEIDY TO LONG ISLAND EXPANSION PROJECT (LEIDY TO LONG ISLAND)

FIRM TRANSPORTATION SERVICE

Incremental Leidy to Long Island Annual Firm Transportation

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The following recourse rates shall apply to Keyspan Gas East Corporation's (Keyspan) Leidy to Long

Island FT contract demand entitlements (50,000 dt/d):

Maximum Minimum

Daily Daily

Rate Rate

-------- ---------

($) ($)

Reservation Rate per Dt - Zone 6:

Base Rate - Leidy to Sta. 210 0.65546 0.00000 1/

Base Rate - Sta. 210 to Long Island 0.58366 0.00000 1/

Electric Power Unit Rate - Zone 6 0.00049 0.00049

Electric Power Unit Rate - Sta. 207 0.01880 0.01880

------- -------

Total Reservation Rate 1.25841 0.01929

Maximum Minimum

Rate Rate

-------- --------

($) ($)

Commodity Rate per Dt - Zone 6:

Base Rate 0.00000 0.00000

Electric Power Unit Rate - Zone 6 0.00151 0.00151

Electric Power Unit Rate - Sta. 207 0.14539 0.14539

------- -------

Total Commodity Rate (excluding surcharges) 2/ 3/ 0.14690 0.14690

Station 210 to Long Island Charges applicable to Keyspan's MarketLink Contract

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The reservation rates for Station 210 to Long Island and for the Station 207 electric power

charge, as shown above, shall also apply to Keyspan's MarketLink FT contract demand entitlements

(50,000 dt/d). The commodity base rate and Station 207 electric power unit rate, as shown above,

shall also apply to volumes transported under Keyspan's MarketLink FT contract. The reservation

and commodity recourse rates applicable to Keyspan's MarketLink FT contract are shown on Sheet No.

47.

Notes:

1/ The minimum reservation rate applicable to capacity release transactions that are not

permanent releases shall not be less than zero.

2/ Pursuant to Section 27 of the General Terms and Conditions, the Total Commodity Rate shall

be increased to include the ACA unit rate of $ 0.00190, if applicable.

3/ The Total Commodity Rate applies to upstream or downstream transactions on Buyer's primary

or reverse path.