Petal Gas Storage Company

Original Volume No. 1

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Effective Date: 10/01/2002, Docket: RP02-435-000, Status: Pending

Third Revised Sheet No. 51 Third Revised Sheet No. 51 : Pending

Superseding: Second Revised Sheet No. 51

ISS RATE SCHEDULE

INTERRUPTIBLE STORAGE SERVICE (Continued)

(b) The storage of gas in amounts up to Customer's interruptible Storage

Capacity provided that all firm service customer storage needs have

been satisfied; and

(c) The daily withdrawal and delivery to the Point(s) of Delivery of

Customer's gas per Customer's nomination up to Customer's Total Maximum

Daily Withdrawal Quantity ("TMDWQ"), plus any authorized overrun

withdrawal quantity, provided that all firm nominations for withdrawal

have been satisfied and that Customer has sufficient gas stored in

Customer's Interruptible Storage Capacity.

(d) To the extent storage capacity which is being utilized by a Customer

hereunder is needed by Petal in order to satisfy Petal's obligations to

firm FSS customers, Petal shall require Customer to withdraw all, or any

portion of, the ISS gas quantities held in storage by Petal for the

account of Customer within ten (10) days of Petal's notice or as

specified by Petal. Unless Petal otherwise agrees, Customer shall be

required to make ratable withdrawals. If Customer fails to withdraw

such ISS storage gas, then Petal may take, free and clear of any adverse

claims, title to such ISS storage quantities as Customer was instructed

to withdraw. Petal's notice to Customer may be given verbally, but

shall be confirmed in writing or via Petal's Internet website.

3. OVERRUN STORAGE SERVICE

(a) Customer may request Petal to inject quantities greater than Customer's

TMDIQ. If Petal has injection capacity available, Petal shall inject

such quantities and Customer shall pay Petal for such injections at the

Overrun Injection Rate under this rate schedule.

(b) Customer may request Petal to withdraw quantities greater than Customer's

TMDWQ. If Petal has withdrawal capacity available, Petal shall withdraw

such quantities and Customer shall pay Petal for such withdrawals at the

Overrun Withdrawal Rate under this rate schedule.

(c) Customer may not inject gas into storage pursuant to this rate schedule

if the quantity of Customer's gas in storage equals Customer's

Interruptible Storage Capacity.