MarkWest Pioneer, L.L.C.

Original Volume No. 1

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Effective Date: 04/01/2009, Docket: RP09-321-000, Status: Effective

Original Sheet No. 86 Original Sheet No. 86

GENERAL TERMS AND CONDITIONS

(Continued)

22.4.2. The capacity release timeline is applicable to all parties involved

in the Capacity Release process; however, it is only applicable if

(1) all information provided by the parties to the transaction is

valid and the acquiring Shipper has been determined to be

creditworthy before the capacity release bid is tendered; and (2)

that are no special terms or conditions of the release.

a) For biddable releases (less than one year)

On a Business Day

12:00 pm

Time by which Releasing Shipper shall post the Shipper

Notice on the Website.

1:00 pm

Bidding period ends and evaluation period begins during

which contingency is eliminated, determination of best bid

is made and ties are broken.

2:00 pm

Evaluation period ends and award posting if no match

required.

Communication of match or award is due

2:30 pm

Match response is due

3:00 pm

Award posting where match is required.