Horizon Pipeline Company, L.L.C.

Original Volume No. 1

Effective Date: 04/18/2002, Docket: CP00-129-001, Status: Effective

Original Sheet No. 212 Original Sheet No. 212 : Effective

GENERAL TERMS AND CONDITIONS

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23. NOTIFICATION

23.1 GENERAL

Except as provided otherwise in this Tariff or the

Agreement, operational communications may be made by telephone or

other mutually agreeable means without subsequent written

confirmation, unless written confirmation is requested by either

party hereto. Any notice, request, demand, statement or other

formal communication shall only be deemed given when delivered by

first class, certified or registered U.S. mail, overnight delivery,

courier, telefax or Electronic Notice Delivery consistent with the

GISB Standards as adopted in Section 32 of these General Terms and

Conditions. Such delivery shall: (a) be sent to Horizon at the

address specified in the Agreement, or through such electronic means

as are available and authorized by Horizon, or at an address

otherwise stated in a notice by Horizon to Shipper; and (b) be sent

to Shipper at the address in the Agreement pursuant to the Rate

Schedule, through Electronic Notice Delivery or at an address

otherwise stated in a notice by Shipper to Horizon.

23.2 NOTIFICATION PROCEDURES

(a) PRICING

(1) The availability and pricing of services on

Horizon's System is governed by this Tariff. From time to time,

Horizon changes or updates its Tariff by filings with the FERC. Each

Shipper is notified by Horizon of such filings and is provided a

copy of each filing.

(2) Telephone inquiries related to the

availability or pricing of services are answered by representatives

of Horizon and upon request, potential Shippers are provided copies

of Horizon's Tariff filings.

(3) Shippers desiring a rate under any Agreement

other than the maximum rate on file with the FERC are required to

submit such requests in writing or by electronic medium to the

Manager, Gas Transportation, in Houston. Any lower rate agreed to

by Horizon is evidenced in writing to such Shipper, and such rate is

considered confidential until it is reported to the FERC as required

by the Regulations. In order to attract or determine interest in

the use of any particular service, representatives of Horizon from

time to time contact Shippers by telephone. Such conversations are

confidential and may or may not result in Shipper submitting a

request for a discounted rate for a particular service.