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Ruth I. Dreessen

Ruth I. Dreessen, 61, was elected as a member of the Board of Directors of our general partner effective January 2018. Ms. Dreessen has served as Managing Director of Lion Chemical Partners, LLC, a private equity firm focused on the chemical and related industries, since 2010. Prior to joining Lion Chemical Partners, Ms. Dreessen served as the Executive Vice President and Chief Financial Officer of TPC Group Inc., a leading processor of C4 chemicals, from 2005 to 2010. Before joining TPC Group, Ms. Dreessen served as Senior Vice President, Chief Financial Officer and Director of Westlake Chemical Corporation, a producer of olefins and vinyls. She spent 21 years at JP Morgan Securities and predecessor companies, ultimately as a Managing Director of chemicals investment banking. Ms. Dreessen serves as the independent Chairperson of Gevo, Inc. and has served as a director since March 2012. She is also a member of Gevo’s Audit, Compensation, and Nominating and Corporate Governance Committees. Ms. Dreessen previously served on the boards of Targa Resources LP; Versar, Inc.; the Georgia Gulf Corporation; Westlake Chemical Corporation and the Better Minerals & Aggregates Corporation. We believe that the leadership skills Ms. Dreessen has developed while serving in several executive positions and as the Chairperson of a publicly traded company, as well as her extensive financial experience, bring important leadership and finance skills to the Board.