MarkWest Pioneer, L.L.C.

Original Volume No. 1

 Contents / Previous / Next / Main Tariff Index

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

Original Sheet No. 164 Original Sheet No. 164

MARKWEST PIONEER, L.L.C.

FORM OF SERVICE AGREEMENT

RATE SCHEDULE FT-2

Exhibit B

to Service Agreement No. ____

Under Rate Schedule FT-2 Between

MarkWest Pioneer, L.L.C. and ____________________________

FORM OF PRODUCTION COMMITMENT AGREEMENT

THIS PRODUCTION COMMITMENT AGREEMENT (“Production Commitment Agreement”) is made and entered

into as of the ____ day of _____________, 20___, by and between MarkWest Pioneer, L.L.C.,

referred to as “Transporter” and ______________________, a ____________________ Corporation,

referred to as “Shipper.” Transporter and Shipper are collectively referred to as the

"Parties.”

ARTICLE I

PRODUCTION COMMITMENT OPTIONS

1.1. Shipper’s Production Commitment shall conform to one of the following two options

as designated on Attachment A to this Production Commitment Agreement:

1.1.1. Option 1 – Full Commitment: Shipper commits all of its production that it

owns and controls from the Woodford Shale Production Area, net of any production

committed to a third party under a Pre-Existing Agreement as identified on

Attachment A to this Production Commitment Agreement. An Option 1 Production

Commitment must be a minimum of 160,000 net acres in the Woodford Shale Production

Area.

1.1.2. Option 2 – Partial Commitment: Shipper commits a portion of its production

from the Woodford Shale Production Area as identified on Attachment A to this

Production Commitment Agreement. Option 2 Shippers are subject to the MDQ reduction

provision of section 2.6.4 of Rate Schedule FT-2.

1.1.3. Under both Option 1 and Option 2, Transporter shall determine in its

discretion whether Shipper’s Production Commitment is sufficient to support

Shipper’s requested MDQ.