Gulfstream Natural Gas System, L.L.C.

Original Volume No. 1

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Effective Date: 03/01/2004, Docket: RP03-173-002, Status: Effective

Second Revised Sheet No. 137A Second Revised Sheet No. 137A : Effective

Superseding: Sub First Revised Sheet No. 137A

GENERAL TERMS AND CONDITIONS

(CONTINUED)

only when (i) imbalances are within the same Operational

Impact Area and (ii) the resulting trade will reduce the

imbalances for each Cashout Party or its imbalance agent.

Transporter shall allow Cashout Parties to trade imbalances

with other Cashout Parties within the same Operational

Impact Area if the two Cashout Parties' imbalances are

offsetting balances such that the net imbalance for each

Cashout Party after the completion of the trade would be

reduced to a quantity closer to zero. A Cashout Party may

trade any imbalance with another Cashout Party, provided

that the trade shall not result in a transportation path

which crosses a Posted Point of Restriction; provided

further that to the extent the imbalances were incurred

during the remainder of the month when no posted point of

restriction was in effect, those imbalances are available

for trading. Transporter should enable the imbalance

trading process by receiving the request for imbalance

trade, receiving the imbalance trade confirmation, sending

the imbalance trade notification, and reflecting the trade

prior to or on the next monthly Shipper imbalance or

cashout statement. After receipt of an imbalance trade

confirmation, Transporter should send the imbalance trade

notification to the initiating trader and the confirming

trader no later than noon (Central Clock Time) the next

Business Day. Imbalance trades can only be withdrawn by

the initiating trader and only prior to the confirming

trader's confirmation of the trade. Imbalance trades are

considered final when confirmed by the confirming trader

and effectuated by Transporter.