MarkWest Pioneer, L.L.C.

Original Volume No. 1

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

Original Sheet No. 183 Original Sheet No. 183

MARKWEST PIONEER, L.L.C.

FORM OF RELEASE REQUEST

7. Any alternative non-discriminatory economic standard for determination of the award

of transportation rights, including a tie-breaker to choose between bids of equal

value: Releasing Shipper may attach additional pages, as necessary, to stipulate

the release terms and conditions. Additionally, if Releasing Shipper proposes to

require any Replacement Shipper to execute an agreement with Releasing Shipper as a

condition of the release, then a copy of such agreement must be submitted with this

Release Request.

8. If Releasing Shipper has already obtained a Bidder that is prepared to accept all

terms and conditions of this Release Request (“Pre-arranged Bidder”), Releasing

Shipper must provide the following information:

a. The complete legal name of the Pre-arranged Bidder, type of legal entity and

state of incorporation: _________________________________

_________________________________

State of ________________________

b. The rates and charges that the Pre-arranged Bidder agrees to pay for the

Release Request: ___________ (reservation); ___________ (commodity);

_____% (Fuel and Gas Loss Retention Percentage)

c. The term and the Release Quantity agreed to by the Pre-arranged bidder:

Term: _______________________________

Release Quantity: _______ Dth per day

d. Other conditions to the release: ______________________________

9. If the release is subject to bidding, Releasing Shipper shall attach to the Release

Request draft Exhibit R-___ reflecting terms of the release (except price and

identify of the Replacement Shipper which Transporter shall fill in following the

close of the bidding period). In the case of a Prearranged Bidder (whether or not

subject to bidding), the Releasing Shipper shall prepare an Exhibit R-____ and the

Prearranged Bidder shall execute such Exhibit prior to the Releasing Shipper’s

submission to Transporter. The executed Exhibit R-____ shall be submitted with the

Release Request. Releasing Shipper understands that Transporter reserves the right

to invalidate any Release Request within three days of its posting on