UNDERWRITING AGREEMENTUnderwriting Agreement • August 14th, 2009 • Markwest Energy Partners L P • Crude petroleum & natural gas • New York
MarkWest Energy Partners, L.P., a Delaware limited partnership (the “Partnership”), proposes to issue and sell to the underwriters named in Schedule I (the “Underwriters”) attached to this underwriting agreement (this “Agreement”), and MWHC Holding, Inc., a Colorado corporation (the “Selling Unitholder”), proposes to sell to the Underwriters, an aggregate of 5,500,000 common units (the “Firm Units”) representing limited partner interests in the Partnership (“Common Units”), of which 5,200,000 Common Units are to be issued and sold by the Partnership and 300,000 Common Units are to be sold by the Selling Unitholder.
