Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

Effective Date: 12/31/9999, Docket: RP01-245-029, Status: Accepted

Third Revised Sheet No. 81 Third Revised Sheet No. 81

Superseding: Second Revised Sheet No. 81

FIRM AND INTERRUPTIBLE TRANSPORTATION FUEL REQUIREMENTS

Fuel Retention Percentages (for Receipts other than Zone 4A or Zone 4B)

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

Receipt Delivery

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

Zone 4

(except

Zone 4 Sta. 85),

Zone 1 Zone 2 Zone 3 (Sta. 85) 4A & 4B 1/ Zone 5 Zone 6

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

Zone 1 0.31% 0.76% 1.20% 1.20% 3.29% 4.89% 5.78%

Zone 2 0.45% 0.89% 0.89% 2.98% 4.58% 5.47%

Zone 3 0.44% 0.44% 2.53% 4.13% 5.02%

Zone 4 0.00% 2.09% 3.69% 4.58%

Zone 5 1.60% 2.49%

Zone 6 0.89%

Fuel Retention Percentages (for Receipts in Zone 4A or Zone 4B)

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

Receipt Delivery

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

Forward Backhaul

Zone 1 Zone 2 Zone 3 Haul In Haul In

2/ 2/ 2/ Zone 4 Zone 4 Zone 4A Zone 4B Zone 5 Zone 6

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

Zone 4A 0.51% 0.51% 0.51% 2.60% 0.51% 0.51% 0.51% 4.20% 5.09%

Zone 4B 0.84% 0.84% 0.84% 2.93% 0.84% 0.84% 0.33% 4.53% 5.42%

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The above fuel retention percentages apply only to the forward-haul portion, if any, of a

transportation. For transactions in which the receipt zone is downstream of the delivery zone,

the within zone fuel retention percentage(s) will apply for each zone(s) in which there is a

forward haul movement of gas. No fuel will be retained on transportation which does not include a

forward-haul movement of gas.

Notes:

1/ Transportation deliveries to Zone 4A or Zone 4B do not entail the forward-haul movement

of gas in Zone 4A or Zone 4B.

2/ The stated fuel retention percentages for deliveries to Zones 1, 2 or 3 assume no

forward-haul movement of gas in Zones 1, 2 or 3.