Midwest Gas Storage, Inc.

First Revised Volume No. 1

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Effective Date: 05/15/1994, Docket: CP90-454-004, Status: Effective

Original Sheet No. 107 Original Sheet No. 107 : Effective

posting will include the date and time of

posting.

(b) Posting of Bids: Potential Replacement Shippers

may tender to Midwest bids to accept a proposed

release posted on the electronic bulletin board

prior to the expiration of the release notice

and in accordance with the open-season specified

in the release notice or, if not specified, with

the open-season procedures in the following

section. All bids shall be posted on Midwest's

electronic bulletin board. A potential

Replacement Shipper may increase its bid until

the expiration of the bid period, and such

increased bid will supersede all prior bids made

by that bidder. In addition, a potential

Replacement Shipper may withdraw a bid prior to

the end of the bid period, but if it does so, it

may not then submit a lower bid.

(c) Open-Season for Bidding: In the event the

Releasing Shipper does not specify in its

release notice an open-season for accepting bids

from potential Replacement Shippers, the

following default open-season procedures will

apply:

(i) For releases less than one month, an open-

season of two (2) business days, commencing

at least three (3) business days prior to

the effective date of the release. For

releases that involve a Prearranged

Replacement Shipper, the open-season will

commence five (5) business days prior to

the effective date of the release to allow

the Prearranged Replacement Shipper one (1)

business day to match bids.

(ii) For releases one month or more up to and

including one (1) year, an open-season of

ten (10) business days, commencing thirteen

(13) business days prior to the effective

date of the release. If a Prearranged

Replacement Shipper is involved, the open-