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Executive Team

Our Experience Brings Value

• Joseph A. Mills
• Alfredo Garcia
• Charles C. Boettcher
• Steven G. Hendrickson
• Joe Schimelpfening
• William E. Puckett

Joseph A. Mills

Joseph A. Mills, Chairman and Chief Executive Officer, joined EROC in May 2007. Prior to joining EROC, Mills formed Montierra Minerals & Production, LP, a Houston-based oil and gas company focused on the mineral, royalty and non-operated working interest segment of the E&P industry in April 2006. Before Montierra, he was senior vice president of operations for a privately held mineral company in Houston, where he helped coordinate the growth and acquisitions of approximately $480 million in mineral, royalty and overriding royalty interests.

Previously, Mills was a senior vice president at El Paso Corporation, where he managed the ongoing worldwide acquisition efforts of El Paso Production Company and directed the drilling and production efforts of the Gulf of Mexico division. He also served as senior vice president of technical services.

Mills joined El Paso Corporation as part of its 1999 merger with Sonat, Inc., where he had spent 18 years in various executive and senior-level management positions within Sonat Exploration Company, including vice president and general manager of the Gulf of Mexico division (Houston), vice president and general manager of the Mid-Continent division (Oklahoma City), business unit manager of the Permian Basin (Midland, Texas), land manager of the East Texas/North Louisiana region (Tyler, Texas) and coordinator of property acquisitions.

He received a master of business administration degree (with an emphasis in finance) from the University of Houston in 1992 and graduated from the University of Texas with a bachelor of business administration degree in 1982. He is an active member of the Independent Petroleum Association of America (IPAA), Texas Independent Producers and Royalty Owners Association (TIPRO), Houston Association of Professional Landmen (HAPL) and American Association of Professional Landmen (AAPL) organizations. He is also a member of the board of directors of the Texas Pipeline Association.

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Alfredo Garcia

Alfredo Garcia, Senior Vice President - Corporate Development and Interim Chief Financial Officer, joined EROC as chief financial officer in February 2004 and was named senior vice president, corporate development in August 2006. In addition to his continuing role in corporate development, Garcia assumed the role of interim chief financial officer of EROC from December 2007 to May 2008 and again took on the role of interim chief financial officer effective mid-August 2008. Garcia has been instrumental in the company's early-stage consolidation, growth through acquisitions as well as its initial public offering and transformation into a dual-platform master limited partnership.

Prior to EROC, Garcia was CFO of TrueCentric, LLC, a bank-loyalty software application start-up. He also served as Latin American Associate at HM Capital (previously known as Hicks, Muse, Tate & Furst, Inc.), developing the private equity firm's presence in Mexico, Colombia and Venezuela by originating, executing and monitoring investments in the region. Before joining Hicks, Muse, he was investment director at Baring Private Equity Partners and also served as vice president in the mergers and acquisitions practice at Banamex, S.A., Mexico's largest financial institution.

Alfredo received a master of business administration degree (with a concentration in finance) from the Kellogg School of Management at Northwestern University.

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Charles C. Boettcher

Charles C. Boettcher, Senior Vice President, General Counsel and Secretary; Chief Compliance Officer, joined EROC in August, 2007.

Before joining EROC, Boettcher was a partner and member of the Corporate and Securities Department and the Oil & Gas Section in Thompson & Knight, LLP. During his eight years at Thompson & Knight, Boettcher focused on mergers and acquisitions in the oil and gas industry, private equity funding/formation transactions and public and private company security compliance and disclosure. He represented several private equity firms, including Natural Gas Partners (the sponsor of Eagle Rock Energy G&P, LLC), in formation, funding and divestiture of oil and gas exploration, production and midstream-gathering companies. Mr. Boettcher closed an aggregate of $4 Billion in over 50 merger and acquisition transactions and private equity funding transactions.

Boettcher received his juris doctorate from Texas Tech University School of Law in 1999, graduating magna cum laude, Order of the Coif, and Phi Kappa Phi. While at Texas Tech University School of Law, he was a member of the Board of Barristers and was a Staff Member and Casenote Comment Editor on the Texas Tech Law Review.

Boettcher graduated with honors from the University of South Dakota with a bachelor of business administration degree with a double major in accounting and political science in 1996.

Mr. Boettcher is an active member of the American, Dallas and Houston Bar Associations.

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Steven G. Hendrickson

Steve Hendrickson, Senior Vice President of Technical Evaluations, joined EROC in May 2007. A licensed petroleum engineer with extensive experience in the upstream energy sector, he served as vice president of engineering for Montierra Minerals & Production, LP, a Houston-based oil and gas company focused on the mineral, royalty and non-operated working interest segment of the E&P industry. Prior to Montierra, Hendrickson was president of Hendrickson Engineering LLC, a petroleum engineering consulting practice focused on reserves evaluation and transaction analysis. In its first year, the company participated in the evaluation of nearly $4 billion in oil and gas property transactions.

Hendrickson spent six years with El Paso Corporation after its merger with Sonat, Inc. where he served in various engineering management roles. He began his career with the Shell Oil Company in 1983 and, during his 16-year tenure, worked for various subsidiaries as a staff production engineer and engineering manager in multiple domestic producing basins.

Hendrickson received a master's degree in finance (with highest honors) from the University of Houston in 2002 and graduated from the University of Texas with a bachelor's degree in chemical engineering in 1983. He is a member of the Society of Petroleum Engineers (SPE) and the Society of Petroleum Evaluation Engineers (SPEE).

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Joe Schimelpfening

Joe Schimelpfening, Senior Vice President of Operations and Development, joined EROC in May 2007. He was a founding member of Montierra Minerals & Production, LP, a Houston-based oil and gas company focused on the mineral, royalty and non-operated working interest segment of the E&P industry.

Before joining Montierra, he was division operations manager for El Paso Corporation's Gulf of Mexico division. During his tenure with El Paso, and previously Sonat Exploration Company, he managed numerous engineering and operating organizations responsible for the drilling and production of producing assets in East Texas, North Louisiana, the Anadarko Basin, the Texas Gulf Coast and Utah's Uinta Basin. In addition, he served as director, managing multidisciplined technical teams in the development of El Paso's Anadarko Basin and East Texas assets.

Schimelpfening received a bachelor's degree in petroleum engineering from Texas A&M University in 1984. He is a licensed petroleum engineer in Texas and a member of the Society of Petroleum Engineers (SPE).

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William E. Puckett

Bill Puckett, Senior Vice President of Commercial Operations, joined EROC in December 2005. Puckett has extensive experience within the midstream sector covering operations, business development and technical support. He previously spent four years as Dynegy's vice president of technical services for the midstream division, a role for which he led technical support for expansions into LNG and international terminals. The result was the first new FERC-permitted LNG regasification import facility in the nation. Previous responsibilities at Dynegy also included P/L duties for Gulf Coast plants and systems totaling 2.5 BCFD. Puckett also held engineering, business development and gas marketing positions within Trident NGL, Occidental Petroleum and Cities Service Company.

Puckett received a master of business administration degree (with highest honors) from the University of Texas in 1984 and graduated from Oklahoma State University with a bachelor's degree in chemical engineering in 1978. He is a member of the Gas Processors Association (GPA) and has served on its board of directors.

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