Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

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Effective Date: 12/01/2002, Docket: RP03- 51-000, Status: Effective

First Revised Sheet No. 120B First Revised Sheet No. 120B : Effective

Superseding: First Sub Original Sheet No. 120 B

GENERAL TERMS AND CONDITIONS

(Continued)

8. NOMINATIONS, SCHEDULING, AND CURTAILMENT (Continued)

(i) Intraday nominations can be used to nominate new

supply or market or to request increases or decreases in total flow,

changes to receipt points, or changes to delivery points of

scheduled gas.

(ii) Intraday nominations do not rollover (i.e. intraday

nominations span one (1) day only). Intraday nominations do not

replace the remainder of a standing nomination. There is no need to

re-nominate if intraday nomination modifies existing nomination.

(iii) MRT will give scheduling priority to service under

Rate Schedule NNT and intraday nominations submitted by firm

Customers over nominated and scheduled and/or flowing quantities for

interruptible Customers. Otherwise, MRT will not accept or confirm

an intraday nomination that would result in a change to any other

Customer's or Pool Operator's scheduled and flowing quantities for

that day without their prior consent. MRT will provide advance

notice using the mechanisms provided for in Section 9.6 below for

notifying Customers of OFOs to interruptible Customers of reductions

in scheduled and/or flowing quantities resulting from intraday

nominations by firm Customers in accordance with Section 8.1(f)(i)

above. MRT will notify any such interruptible customer if any

penalties will apply on the day its scheduled and/or flowing

quantities are reduced. If MRT does not notify an interruptible

Customer in advance of reductions in scheduled and/or flowing

quantities due to an intraday nomination by a firm Customer, no

penalties will be imposed by MRT on such interruptible Customer for

the day of the reduction. No penalties other than penalties

assessed during periods in which OFOs and/or curtailment orders are

in effect will be imposed by MRT on interruptible Customers whose

scheduled and/or flowing quantities were reduced due to firm

Customers' intraday nominations.

(iv) Intraday nominations submitted on the day prior to gas

flow, if scheduled, will take effect at the start of the next gas

day, 9:00 a.m. central clock time.

(h) Nomination Confirmation. MRT shall contact the appropriate

upstream and downstream parties to confirm the nominated quantities.