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. 90 Original Sheet No. 90

GENERAL TERMS AND CONDITIONS

(Continued)

22.5.5. Any bid submitted will bind Replacement Shipper or PRS to the terms

of the bid if Transporter selects such bid as the best bid. If all

the information provided by the Releasing Shipper, the bidder/PRS is

valid, the Replacement Shipper is creditworthy, and there are no

special terms and conditions, Transporter will issue and execute the

Addendum to the Capacity Release Transportation Agreement within one

hour of awarding the winning bid.

22.5.6. The capacity release addendum number will be issued within one hour

of the award posting. Nomination is possible beginning at the next

available nomination cycle for the effective date of the capacity

release addendum; however, in no event will Gas flow on Replacement

Shipper’s agreement prior to the effective date of the release as

posted in the Shipper Notice.

22.5.7. Replacement Shipper is liable for all obligations attributable to

the rate schedule and related tariff provisions under which the

release takes place.

22.5.8. Replacement Shipper is responsible for payment of the applicable

Reservation Charge, Commodity Charge, and all other applicable

charges and surcharges consistent with its winning bid. In the

event of payment default, subject to this section, Transporter may

elect to terminate that Replacement Shipper’s Capacity Release

Service Agreement, which shall terminate all service.

22.5.9. Once Replacement Shipper or PRS is notified of a winning bid, such

Replacement Shipper or PRS shall have all the rights and obligations

specified under the Releasing Shipper’s Rate Schedule, the Releasing

Shipper’s FT Agreement and the GT&C including the right to release

firm capacity pursuant to this section unless the conditions

prescribed by the Shipper Notice require otherwise. Transporter

shall allow re-releases on the same terms and basis as the primary

release (except as prohibited by the Commission’s regulations).