Valero Interstate Transmission Company

First Revised Volume No. 1

Effective Date: 11/01/1991, Docket: GT91- 42-000, Status: Effective

Original Sheet No. 60 Original Sheet No. 60 : Superseded

GENERAL TERMS AND CONDITIONS

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(continued)

5. OPERATING PROVISIONS FOR INTERRUPTIBLE TRANSPORTATION SERVICE

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a. Interruptible transportation service under this FERC Gas Tariff

shall be provided when, and to the extent that, Vitco determines

that capacity is available in Vitco's existing facilities, which

capacity is not subject to a prior claim by another customer or

another class of service under a pre-existing contract, service

agreement or certificate.

b. With respect to all requests for interruptible service by a

Shipper who had not contracted for service prior to October 9,

1985, the provisions of paragraphs c through f shall govern.

c. On any day that sufficient capacity is not available in Vitco's

system to provide transportation for all gas tendered under

executed Transportation Service Agreements with Shippers referred

to in paragraph 5(b) above, Vitco shall allocate its available

capacity among such Shippers on a first come/first served basis.

For purposes of allocating such capacity, any such Shipper who

has furnished Vitco with a completed request complying with the

requirements of paragraphs d and e below, when accepted by Vitco

in an executed Transportation Service Agreement will be entitled

to priority over any Shipper furnishing Vitco with a completed

request on a later date and shall be unaffected by and shall have

priority over subsequent requests for service under Rate Schedule

ITS-1.

d. Requests for transportation under this FERC Gas Tariff will be

invalid and will not be considered if service is requested to

commence later than six (6) months after the information specified

in paragraph e of Section 5 of the General Terms and Conditions is

provided to Vitco.

e. Requests for interruptible transportation hereunder shall be made

by completing Vitco's Transportation Request Form in addition to

providing the following information in writing to the attention

of Vitco's Field Manager.