MARKWEST ENERGY PARTNERS, L.P., MARKWEST ENERGY FINANCE CORPORATION, as Issuers, THE SUBSIDIARIES NAMED HEREIN, as Subsidiary Guarantors AND WELLS FARGO BANK, NATIONAL ASSOCIATION, as TrusteeFifth Supplemental Indenture • November 7th, 2011 • Markwest Energy Partners L P • Crude petroleum & natural gas • New York
THIS FIFTH SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”) dated as of November 3, 2011 is among MarkWest Energy Partners, L.P., a Delaware limited partnership (the “Partnership”), MarkWest Energy Finance Corporation, a Delaware corporation (“MarkWest Finance” and, together with the Partnership, the “Issuers”), the Subsidiary Guarantors (as defined herein) listed on Schedule A hereto, and Wells Fargo Bank, National Association, a national banking association, as Trustee under the Indenture, dated as of November 2, 2010, among the Issuers, the Subsidiary Guarantors named therein and the Trustee (the “Base Indenture” and, as amended and supplemented by this Supplemental Indenture, in respect of the 6.25% Senior Notes due 2022, the “Indenture”).
