High Island Offshore System, L.L.C.

Third Revised Volume No. 1

Effective Date: 10/01/2002, Docket: RP02-434-001, Status: Effective

First Revised Sheet No. 95 First Revised Sheet No. 95 : Effective

Superseding: Original Sheet No. 95

GENERAL TERMS AND CONDITIONS

(Continued)

(4) The Intra-day 2 Nomination Cycle:

(All times are CCT on the Gas Day.)

5:00 p.m. Latest time that nominations may leave control of the

nominating party;

5:15 p.m. Receipt of complete nominations by Transporter (including

from TTTSPs);

5:30 p.m. Transporter sends quick response;

8:00 p.m. Receipt of completed confirmations by Transporter from

upstream and downstream connected parties;

9:00 p.m. Transporter to provide scheduled quantities to affected

Shippers and point operators.

Scheduled quantities resulting from the Intra-day 2 Nomination Cycle

shall be effective at 9:00 p.m. CCT on the same Gas Day. Bumping is

not allowed during the Intra-day 2 Nomination Cycle.

7.3 Intraday Nominations. Intraday nominations are those identified in

Section 7.2 (3) and (4). An intraday nomination shall be prospective

and is subject to the deadlines in Section 7.2 (3) and (4). Intraday

nominations may be used to request increases or decreases in total

flow, make changes to Point(s) of Receipt, and/or to Point(s) of

Delivery. Intraday nominations may be used to nominate new supply or

market. Intraday nominations shall specify Shipper's service

requirements for the day only and shall include the effective date and

time. Interconnected parties should agree on the hourly flows of the

intraday nomination, if not otherwise addressed in HIOS' contract or

tariff. Intraday nominations do not rollover and do not replace the

remainder of a standing nomination.