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. 82 Original Sheet No. 82

GENERAL TERMS AND CONDITIONS

(Continued)

22.2. Shipper Release Notice – A Shipper that desires to release any or all of its

firm capacity under this section must notify Transporter electronically on

the Website of its intent to release capacity and the terms of the release

(hereafter referred to as “Shipper Notice”). A Shipper Notice shall be

posted on the Website upon receipt by Transporter or such other time which

must comply with the timeline set forth in this section, as requested by

Releasing Shipper. This Shipper Notice shall include:

22.2.1. Releasing Shipper’s name and contract number;

22.2.2. The specific quantity of capacity to be released;

22.2.3. If the request for release is on a permanent basis;

22.2.4. The Receipt Points and Delivery Points at which Releasing Shipper

will release capacity and the quantity of capacity to be released at

each point;

22.2.5. The term of the release;

22.2.6. Whether Releasing Shipper is willing to release an amount less than

requested and for a shorter time period than requested;

22.2.7. Whether Releasing Shipper conditions the release to not allow the

Replacement Shipper to effect a change in the Primary Receipt and/or

Delivery Point(s) listed on Exhibit A to the Releasing Shipper’s FT

Agreement;

22.2.8. The conditions of Releasing Shipper’s right of recall as well as

methods and rights associated with returning the previously recalled

capacity to the Replacement Shipper, if applicable;

22.2.9. Whether contingent bids will be accepted and when the contingency

must be removed;

22.2.10. The identity of a Prearranged Replacement Shipper (“PRS”), if

applicable;