Transwestern Pipeline Company

Second Revised Volume No. 1

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Effective Date: 05/01/1990, Docket: CP90- 14-003, Status: Effective

Substitute Original Sheet No. 39A Substitute Original Sheet No. 39A : Superseded

RATE SCHEDULE IS-1

Interruptible Sales

(continued)

(B) The Rate Schedules ITS and/or FTS contract number(s) under which

the IS sales gas will be transported; and

(C) The quantity of gas to be tendered at the point(s) of sales; and

(D) The estimated term of the nomination; and

(E) The name, position and phone number of person authorized by Buyer

to submit nominations; and

(F) The name and phone number of person authorized by Buyer to

perform day-to-day confirmation of purchases.

If Buyer fails to comply with the provisions of this Section 5, then

Seller shall not schedule the initiation of or changes to service

nominated by Buyer.

In the event gas supplies remain available after gas has been scheduled or

as a result of an operations or weather situation, then Seller may accept

nominations or schedule service after the time deadline set forth above.

Such sales shall be made available on a not unduly discriminatory,

first-come, first-served basis.

The applicable Priority Date for interruptible sales service provided

hereunder shall be determined as follows:

(i) The Priority Date shall be the date Seller receives a request for

service under Rate Schedule IS-1; provided, however, if Buyer

fails for reasons not attributable to Buyer's or Seller's force

majeure to purchase quantities of natural gas pursuant to this

Rate Schedule within 15 days after the Service Agreement is

executed, then Buyer's Priority Date will be the day Buyer first

purchases gas hereunder.