Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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Effective Date: 05/01/2010, Docket: RP10-554-000, Status: Effective

Fifth Revised Sheet No. 87 Fifth Revised Sheet No. 87

Superseding: Fourth Revised Sheet No. 87

TRADING FEES AND TRADING FUEL RETENTION PERCENTAGES

PURSUANT TO SECTION 25.4 AND 25.7 OF THE

GENERAL TERMS AND CONDITIONS

OIA 1 Firm Trading Fee ($ per dt)

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

Positive

Imbalance Negative Imbalance

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

Zone 1 Zone 2 Zone 3 Zone 4 Zone 4A Zone 4B

Zone 1 - 0.00174 0.00437 0.00738 0.02071 0.02401

Zone 2 - - 0.00263 0.00564 0.01897 0.02227

Zone 3 - - - 0.00301 0.01634 0.01964

Zone 4 - - - - 0.01333 0.01663

Zone 4A 0.00314* 0.00314* 0.00314* 0.00314* - 0.00314

Zone 4B 0.00522** 0.00522** 0.00522** 0.00522** 0.00208 -

OIA 1 Interruptible Trading Fee ($ per dt)

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

Positive

Imbalance Negative Imbalance

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

Zone 1 Zone 2 Zone 3 Zone 4 Zone 4A Zone 4B

Zone 1 - 0.02163 0.05058 0.09776 0.27014 0.31250

Zone 2 - - 0.02895 0.07613 0.24851 0.29087

Zone 3 - - - 0.04718 0.21956 0.26192

Zone 4 - - - - 0.17238 0.21474

Zone 4A 0.04236* 0.04236* 0.04236* 0.04236* - 0.04236

Zone 4B 0.06849** 0.06849** 0.06849** 0.06849** 0.02613 -

* The trading fee that applies to a trade that has a positive imbalance in Zone 4A represents

the Zone 4A mileage component assessed for the forward haul miles required in Zone 4A.

** The trading fee that applies to a trade that has a positive imbalance in Zone 4B represents

the Zone 4A and Zone 4B mileage components assessed for the forward haul miles required in

Zone 4A and Zone 4B.

OIA 1 Trading Fuel Retention Percentages

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

Positive

Imbalance Negative Imbalance

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

Zone 1 Zone 2 Zone 3 Zone 4 Zone 4A Zone 4B

Zone 1 - 0.42% 0.87% 2.85% 3.39% 3.39%

Zone 2 - - 0.45% 2.43% 2.97% 2.97%

Zone 3 - - - 1.98% 2.52% 2.52%

Zone 4 - - - - - -

Zone 4A - - - - - -

Zone 4B 0.54% 0.54% 0.54% 0.54% 0.54% -