MarkWest Pioneer, L.L.C.

Original Volume No. 1

Effective Date: 07/14/2009, Docket: RP09-367-001, Status: Effective

Original Sheet No. 17.1 Original Sheet No. 17.1

Superseding: Original Sheet No. 17

RATE SCHEDULE FT-2

(Continued)

2.11 Transporter may assign the FT-2 Agreement in whole or in part to any affiliated third

party at any time. Shipper may wholly assign its FT-2 Agreement and the Production

Commitment Agreement to any affiliated third party that satisfies Transporter’s

creditworthiness standards. Other than as set forth above, the FT-2 Agreement and the

Production Commitment Agreement shall not be assigned by Shipper to a non-affiliated

third party without the express written consent of Transporter, which consent shall not

be unreasonably withheld, conditioned or delayed. It shall be reasonable for Transporter

to withhold its consent to a proposed assignment for the following non-exclusive reasons:

(i) if the assignment of the FT-2 Agreement, in whole or in part, is not coupled with a

contemporaneous transfer of like proportions of the Committed Production to the same

transferee; or (ii) if the proposed transferee does meet the same or greater

creditworthiness standard as Shipper as of the time of the assignment.

2.12 Transporter shall have no obligation to render service if and for so long as Shipper is

in default under its FT-2 Agreement or the GT&C.

3. RATES AND CHARGES

3.1 The applicable maximum and minimum Recourse Rates for service under this Rate Schedule

FT-2 are set forth in the currently Statement of Rates and Charges of this Tariff, and

are incorporated herein by reference.

3.2 Unless Transporter and Shipper agree in writing to a Discounted Rate or a Negotiated

Rate, which shall be identified on Exhibit A to the FT-2 Agreement, the rates applicable

to Shipper shall be the maximum Recourse Rates as set forth on the effective