Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

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Effective Date: 03/01/2004, Docket: RP04-152-000, Status: Effective

Fourth Revised Sheet No. 120A Fourth Revised Sheet No. 120A : Effective

Superseding: Third Revised Sheet No. 120A

GENERAL TERMS AND CONDITIONS

(Continued)

8. NOMINATIONS, SCHEDULING, AND CURTAILMENT (Continued)

The quick response by MRT will be an electronic message to those parties

submitting nominations electronically advising of receipt of the

nomination and of any errors in communication or missing required data

elements.

(ii) All nominations should be considered original

nominations and should be replaced to be changed. When a

nomination for a date range is received, each day within that

range is considered an original nomination. When a subsequent

nomination is received for one or more days within that range, the

previous nomination is superseded by the subsequent nomination

only to the extent of the days specified. The days of the

previous nomination outside the range of the subsequent nomination

are unaffected. Nominations have a prospective effect only.

(iii) Nominations received after nomination deadline should

be scheduled after the nominations received before the nomination

deadline.

(iv) Incomplete or Late Nominations. A Customer's or Pool

Operator's failure to submit properly completed nominations may

result in gas not being transported, pooled, or injected or

withdrawn from storage. A Customer's or Pool Operator's failure

to submit a nomination by the applicable deadline may result in

delays for the requested service. Late nominations will not be

accepted if such acceptance would result in the curtailment of gas

previously scheduled, unless MRT and all affected parties agree to

the contrary.

(g) Intraday Nominations. Any nomination submitted after the

nomination deadline for the day of gas flow specified in Section

8.1(f)(i)(A) herein shall be treated as an intraday nomination. For

services that provide for intraday nominations and scheduling, there

will be no limitation as to the number of intraday nominations (line

items as per NAESB Standard 1.2.1) which a Customer or Pool Operator may

submit at any one standard nomination cycle or in total across all

nomination cycles. An intraday nomination is effective only for the day

specified in the nomination, must be submitted at least four (4) hours

prior to the requested change in gas flow, and remains in effect through

the end of such day.