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Instructor Information

NameBioEmail
John (Rex)David CoffmanRex is an award-winning trainer/facilitator in the fields of environmental health and safety, and has had the opportunity to work with, educate and coach safety and environmental professionals, students and military personnel both academically and professionally for 15 years. Rex is a seasoned environmental professional with more than 30 years of leadership in the implementation, management and facilitation of complex environmental permitting, compliance and enforcement proceedings at the federal, state and local levels of government. He is also very experienced in the legislative and regulatory processes, and has provided technical comments on several major federal and state environmental rules, and has offered expert testimony before the Texas Senate Natural Resources, and the Texas House of Representatives Environmental Regulation Committees. Rex received his MS in Interdisciplinary Studies (Environmental Engineering, Public Administration and Business) from the University of Texas at Arlington, and his BS in Mechanical Engineering Technology from Texas Tech University. Rex has also been very fortunate to assist in providing educational success and leadership at a number of exceptional educational organizations including the University of Texas at Arlington, and Tarrant County College as well as with a number of private firms. Rex is a Veteran of the United States Navy having served proudly aboard USS Long Beach, CGN-9 where he was the Launcher Captain of the aft Mark 10 "Terrier" Guided Missile Launching System.N/A
Mary "Molly" HoldenMs. Holden received Bachelor's and Master's Degrees in Geology from Grand Valley State University and the University of Illinois, respectively. She has nearly 20 years' experience in environmental consulting with CH2M HILL Companies, where she held the positions of field hydrogeologist, site safety supervisor, and project manager. Her experience includes primarily site investigation/remediation projects in accordance with CERCLA, RCRA, and the CWA. Ms. Holden has spent the past 10 years in consulting, curriculum development (including online course), and instruction. Her clients have included private firms, Texas Christian University, Tarrant County College, and the University of Texas-Arlington. As a UTA-DED instructor, she develops and teaches several courses for ETI and OSHA Education Center. N/A

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