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2017 TXOGA BOARD OF DIRECTORS David W. Killam CHAIR Managing Partner Killam Oil Company, LTD. E. L. Ames, Jr. Chairman & CEO Venus Oil Company Eduardo Asset Vice President, Refining CITGO Petroleum Corporation David Banks Vice President BHP Billiton Petroleum Mark Berg Executive Vice President, Corporate/Vertically Integrated Operations Pioneer Natural Resources Company Roe Buckley Chairman & Chief Financial Officer Mewbourne Oil Company Dennis Cameron Sr. VP & General Counsel WPX Energy, Inc. Randy Cleveland Vice President, Americas ExxonMobile Production Company Dan Cole VP, Commercial Development & Govt. Relations Denbury Resources, Inc. Harold D. Courson President Natural Gas Anadarko Company Heath DePriest Managing Director, Business Development Phillips 66 John Dill Vice President Of Government Relations Chesapeake Energy Corporation Greg Dykes VP, Environmental, Health, & Safety SandRidge Energy, Inc. Allan D. Frizzell Vice President & Director Enrich Oil Corporation Rick Gideon Sr. Vice President, U.S. Operations Devon Energy Corporation Gregory Givens Vice President, Eagle Ford EP Energy Eric Hambly Senior Vice President, U.S. Land Operations Murphy Oil Corporation Greg Hardin Vice President, Regulatory Affairs Occidental Oil and Gas Helene Harding VP, Gulf Coast Business Unit ConocoPhillips Forrest E. Hoglund Chairman Hoglund Interests Albert Hrubetz President Hrubetz Oil Company Dan Allen Hughes, Jr. President Dan A. Hughes Co., L. P. 1 Sierra Club v. EPA 18cv3472 NDCA Tier 2 ED 002061 00143057-00001 2017 TXOGA BOARD OF DIRECTORS William Herbert Hunt Advisor To Management Petro-Hunt, L.L.C. Jon Rex Jones Chairman Jones Management Corporation JonnyJones Chairman & CEO Jones Energy, Ltd. A. V. Jones, Jr. Chairman Van Operating, Ltd. Dale Kokoski Regional Vice President - Eagle Ford Marathon Oil Company David Lawler CEO, US Lower 48 Onshore E&P BP America, Inc. Charlie Moncrief Owner Moncrief Oil / Montex Drilling W. A. Moncrief, Jr. President Montex Oil Company Donnie Moore VP, Texas and Marcellus Business Unit Noble Energy, Inc. Matthew Most Vice President, Government Relations USA EnCana Oil & Gas (USA) Inc. Bruce Niemeyer Vice President Chevron Obie O'Brien Vice President Apache Corporation Joseph I. O'Neill, III Managing Partner O'Neill Properties, Ltd. Bruce Palfreyman Unconventionals General Manager Permian Shell Upstream Americas Harry H. Phillips President Philcon Development Company Frederick Plaeger Vice President, Government Relations EOG Resources, Inc. Robert K. Reeves Executive VP, Law & Chief Administrative Officer Anadarko Petroleum Corporation Corbin J. Robertson, Jr. President & CEO Quintana Minerals Corporation Douglass C. Robison President ExL Petroleum, LP Gaiy Simmons VP Crude, Feedstock Supply & Trading Valero Energy Corporation Alan L. Smith President & CEO Rockcliff Energy Ty Thacker President 3-T Exploration, Inc. 2 Sierra Club v. EPA 18cv3472 NDCA Tier 2 ED 002061 00143057-00002 2017 TXOGA BOARD OF DIRECTORS William M. Thacker, Jr. President & Owner 5-T Properties, LTD. Herb Vogel Executive Vice President - Operations SM Energy Company E. Joseph Wright Executive Vice President & COO Concho Resources, Inc. John H. Young President Joy Resources, Inc./John H. Young, Inc. Sierra Club v. EPA 18cv3472 NDCA Tier 2 3 ED 002061 00143057-00003