Trunkline Gas Company

First Revised Volume No. 1

Effective Date: 10/18/1999, Docket: RP99-483-000, Status: Effective

Fifth Revised Sheet No. 198 Fifth Revised Sheet No. 198 : Effective

Superseding: Fourth Revised Sheet No. 198

GENERAL TERMS AND CONDITIONS

(Continued)

10.CONTRACTING FOR UNSUBSCRIBED CAPACITY

This Section 10 governs the order in which requests for Transportation

service shall be accommodated when unsubscribed firm capacity, other

than released capacity, becomes available. It does not govern

scheduling, which is governed by Section 3 herein. Requests for firm

capacity shall be accommodated in the following manner and subject to

the following conditions and limitations:

10.1 In order to be eligible for firm capacity, a party requesting

service (requestor) must submit a valid request in accordance with

the provisions of Section 2 herein.

10.2 Trunkline will post on the Messengerþ system and the Web Site

available capacity. A requestor that submits a valid request may

submit in writing a bid for the available capacity at any time.

In the event of multiple bids, Trunkline will evaluate the bids

and determine the bid having the greatest economic value as

determined in Section 10.3.

10.3 Trunkline shall tender a Service Agreement for execution to the

requestor submitting the bid having the greatest economic value

for the capacity available, subject to the provisions of Section

10.5. The criteria for determining which requestor has submitted

the bid with the greatest economic value shall be the Net Present

Value (NPV) of the reservation charge that requestor would pay at

the rates requestor has bid, which shall not be less than the

Minimum Rate nor greater than the Maximum Rate, as stated on the

currently effective Tariff Sheet governing such service, over the

term of service specified in the request, utilizing a ten percent

(10%) annual discount factor. Trunkline shall calculate the NPV

by using the eighty (80) percent minimum throughput requirement to

determine revenues generated for service under Rate Schedule FFZ.

Only revenues generated from the reservation charge component will

be used to calculate the NPV. Shippers requesting service at a

Negotiated Rate which exceeds the Maximum Rate will be considered

to be paying the Maximum Rate for purposes of determining the bid

with the greatest economic value. For purposes of calculating

each requestor's NPV, the term will be limited to ten (10) years.

If the economic values of separate service requests are equal,

then service shall be offered in sequence starting with the

request with the earliest date. If separate service requests have

equal economic values and the same date of request, service shall

be offered to such requestors on a pro rata basis.