Leadership Officers

Erik Piatt

Erik R. Piatt

Founder and CEO
Erik R. Piatt is the Founder and CEO of EN Rx incorporated in 2001 and also served as the Chief Technical Officer for the first 15 years. Under the direction of Mr. Piatt, EN Rx has developed multiple products for the environmental industry. The current flagship product is the Vertebrae™ Segmented Horizontal Well Systems, capable of providing a unique approach to site assessment and remediation with multiple environmental management applications. In addition, Erik co-developed the EN Rx Support Package (SP)™ for site assessment and reagent injections and EN Rx Reagent. Mr. Piatt is a Service-Disabled Veteran having served in Desert Storm as a Sergeant in the United States Marine Corps.

Lance I. Robinson, P.E.


Lance Robinson is driven to make each impacted site whole again. It has never been about the process, or the reports, or the effort, but about the finished product, a clean site. This drive made the necessity to invent new products.  For ten years EN Rx, Inc. has been the perfect playground for this venture and his background in Chemical Engineering (go USF Bulls) and 9 years of consulting (mostly AMEC/Wood), on all types of projects and contaminants with all types of technologies, made everything fit. With two co-inventions, the Vertebrae™ Well Systems and the EN Rx Support Package (SP), he helped EN Rx excel above others in performance and ease of application. He can’t wait to see what we can do as a team to advance the world of environmental assessment and remediation over the next ten years.

As a President and leader, he strives to teach and see others succeed, both from his staff to his clients. He loves the moment when the Light Bulb “comes on” and they see the innovation and creativity we have integrated into design and products go to work for this industry.  He uses this same passion and drive to teach other outside of work too, volunteering in kids ministries and coaching baseball and soccer. Smiling kid’s faces really make his day.

Eric Arenberg, M.S./P.G.

Chemical Operations Manager

Eric Arenberg, B.S./M.S., is the Chemical Operations Manager, providing project management and operations oversight for all products and services. Eric was instrumental in early deployments of Vertebrae TM Well Systems as part of a 30-year career. His project experience includes an extensive range of geologic investigation and remediation activities, involving all types of contamination, and in many private and government venues. His previous position was as a Senior Principal Geologist for Wood PLC, a Top 10 environmental firm. Mr. Arenberg graduated from the University of Florida with a BS/M.S. in Geology.

Wesley Wiley, P.G.

Principal Geologist

Wesley F. Wiley, P.G., is a Principal Geologist, providing a variety of design and implementation services for EN Rx. He has been with EN Rx for five years as part of a 33-year career where he had broad environmental management responsibilities, across several hundred sites, for a wide variety of energy and other clients, His primary role is leading project teams for site assessment and remediation. Mr. Wiley holds a B.S. in Geology and Stratigraphy from Missouri State University.

Alyssa Wharton, P.E.

Project Engineer

Alyssa Wharton joined the EN Rx team eager to learn as a field and system technician and has quickly worked her way up to Project Engineer over the past 6 years. Using her environmental engineering degree (go Gators) and problem-solving skills, she loves the creative process of designing each site big and small and finding the best remedial fit, whether it be with our versatile Vertebrae Well Systems, or the unparalleled EN Rx Reagent. Alyssa enjoys working on various teams which has allowed for opportunities to collaborate on product improvement and upgrades. We all share this one planet and thus she believes it is a privilege to work on solutions for assessment and remediation, ranging in scale from your local gas station to EPA superfund sites. Outside of work you can find Alyssa coaching CrossFit classes, trying her hand at home improvement projects, and searching for the best slice of pizza.

John H. Sohl, III

CEO, COLUMBIA Technologies

John H. Sohl, III, the Co-founder of COLUMBIA Technologies. He brings to his roles of President and CEO 35 years of experience directing the development of innovative business solutions fusing science and technology to advance the state of environmental services. At COLUMBIA, John is responsible for the overall direction of corporate activities, the quality of the company’s field services and business development. John is also co-founder of the award-winning SmartData Solutions® real-time data services platform and has played an integral role in providing clients with real-time decision-making information. A former officer in the U.S. Navy nuclear submarine force, retiring with a rank of Commander, Mr. Sohl holds a B.S. in engineering from the United States Naval Academy and an M.B.A from Chaminade University. John is a member of the Small Environmental Business Action Coalition, the Sustainable Remediation Forum, the Society of American Military Engineers, and the National Ground Water Association.

Dr. W. Richard Laton

President, Earth Forensics, Inc. | Associate Professor, Hydrogeology, Cal State University Fullerton

Dr. W. Richard Laton is a Professor of Geology at the California State University in Fullerton, CA. He is an expert in the field of hydrology/hydrogeology, in a career that includes teaching, consulting, litigation support and management experience in water quality, environmental sampling, groundwater modeling, well hydraulics, G.I.S. /remote sensing and environmental geology. Overall, he has a primary interest in integrating hydrogeology with a multi-faceted systems approach to solving applied field problems. Richard is also a consultant for a variety of companies and agencies, through Earth Forensics, Inc., as its Founder and President. Richard is a Professional Geologist (P.G.) in numerous States with an emphasis on CA, OR, WA, AZ, IN, MN, IL TX, FL and an AIPG Certified Geologist. Among his many honors, he was the 2009 McEllihiney Lecturer for the National Groundwater Association (NGWA) and the Co-Chair of its Groundwater Summit in 2006. Dr. Laton received his Ph.D. Hydrogeology from Western Michigan University.

Dr. Charles (Chuck) J. Newell

Vice President | Environmental Engineer at GSI Environmental Inc.

Dr. Charles (Chuck) J. Newell is a Co-Founder and Principal Engineer with GSI Environmental Inc. with more than 30 years of experience as an environmental consultant. He is a member of the American Academy of Environmental Engineers, a NGWA Certified Groundwater Professional, and an Adjunct Professor at Rice University. He has served as a Principal or Co‐Principal Investigator for numerous environmental research and development projects for the DOD, DOE, USEPA, the American Petroleum Institute, and numerous industrial clients. Dr. Newell has been awarded the Hanson Excellence of Presentation Award by the American Association of Petroleum Geologists, the Outstanding Presentation Award by the American Institute of Chemical Engineers, the 2001 Wesley W. Horner Award by the American Society of Civil Engineers, the 2008 Outstanding Alumni Award from Rice University, the Strategic Environmental Research and Development Program (SERDP) 2014 Project of the Year and the 2020 Lifetime Achievement Award by the Association for Environmental Health and Sciences.

John Simon

Principal, Gnarus Advisors LLC

John Simon, is a Senior Vice President at Nathan, Inc., founded in 1946, and is a private international economic and analytics consulting firm that works with government and commercial clients internationally. He has more than 30 years of broad-based experience in assessing, managing, and mitigating issues associated with hazardous sites. John is responsible for directing environmental projects throughout the U.S., with expertise in remediation, due diligence, environmental insurance, liability risk transfer, and environmental management. He has evaluated and conducted thousands of remediation projects and serves as Editor-in-Chief of the Remediation Journal since 1996. Mr. Simon previously served 22 years as Executive V.P. at WSP Environment & Energy. John is a leader in ASTM Greener Cleanup Standards and the President Emeritus of Sustainable Remediation Forum. He received a B.S. in Civil Engineering from Vanderbilt University and a M.S. in Environmental Engineering from Stanford University.