Petal Gas Storage, L. L. C.

Original Volume No. 1

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Effective Date: 11/01/2010, Docket: RP10-1219-000, Status: Effective

First Revised Sheet No. 20 First Revised Sheet No. 20

Superseding: Original Sheet No. 20

FSS-1 RATE SCHEDULE

FIRM STORAGE SERVICE (Continued)

For biddable releases (more than 1 year):

-- offers should be tendered by 12 p.m. four Business Days before award;

-- open season ends no later than 1 p.m. on the Business Day before

timely nominations are due (open season is three Business Days);

-- evaluation period begins at 1 p.m. during which contingency is

eliminated, determination of best bid is made, and ties are broken;

-- evaluation period ends and award posting if no match required at 2

p.m.;

-- match or award is communicated by 2 p.m.;

-- match response by 2:30 p.m.;

-- where match required, award posting by 3 p.m.;

-- contract issued within one hour of award posting (with a new contract

number, when applicable); nomination possible beginning at the next

available nomination cycle for the effective date of the contract.

(Central Clock Time)

For non-biddable releases:

Timely Cycle

-- posting of prearranged deals not subject to bid are due by 10:30

a.m.;

-- contract issued within one hour of award posting (with a new contract

number, when applicable); nomination possible beginning at the next

available nomination cycle for the effective date of the contract.

(Central Clock Time)

Evening Cycle

-- posting of prearranged deals not subject to bid are due by 5 p.m.;

-- contract issued within one hour of award posting (with a new contract

number, when applicable); nomination possible beginning at the next

available nomination cycle for the effective date of the contract.

(Central Clock Time)

Intraday 1 Cycle

-- posting of prearranged deals not subject to bid are due by 9 a.m.;

-- contract issued within one hour of award posting (with a new contract

number, when applicable); nomination possible beginning at the next

available nomination cycle for the effective date of the contract.

(Central Clock Time)

Intraday 2 Cycle

-- posting of prearranged deals not subject to bid are due by 4 p.m.;

-- contract issued within one hour of award posting (with a new contract

number, when applicable); nomination possible beginning at the next

available nomination cycle for the effective date of the contract.

(Central Clock Time)