Gulfstream Natural Gas System, L.L.C.

Original Volume No. 1

Effective Date: 05/01/2003, Docket: CP00- 6-009, Status: Effective

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

Superseding: Sub Original Sheet No. 137

GENERAL TERMS AND CONDITIONS

(CONTINUED)

8.3 Netting: For each Month, all cumulative Transportation

Imbalances within an Operational Impact Area will be netted

among each of Cashout Party's firm and interruptible

Agreements. For those points that are bi-directional, the

net direction of the quantities transported for a Cashout

Party will determine whether the point will be identified

for that Cashout Party as a Receipt or Delivery Point each

Month.

8.4 Trading: Posting and trading of the previous Month's netted

Transportation Imbalances will be allowed within each

Operational Impact Area between imbalance agents (or the

Cashout Party, if no imbalance agent exists) from the first

calendar Day of the current Month until the end of the 17th

Business Day of the current Month. Imbalances to be posted

for trading should be authorized by the Cashout Party.

Authorizations to post imbalances that are received by

Transporter by 11:45 A.M. should be effective by 8:00 A.M.

the next Business Day (Central Clock Time). Imbalances

previously authorized for posting should be posted on or

before the ninth business day of the month. Transporter

should provide the ability to view and, upon request,

download posted imbalances. Transporter should not be

required to post zero imbalances. When trading imbalances,

a quantity should be specified. Trading will be allowed