Leadership Officers

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 I. Robinson, P.E., is the President of EN Rx and co-developed the Vertebrae™ Well Systems and the EN Rx Support Package (SP) technologies cites during his nine year tenure. Prior to EN Rx, Robinson worked for nine years as a design and assessment engineer for various environmental consultants in the remediation industry. His experience spans projects in petroleum, pesticides, and solvent remediation, completing projects from inception through closure. Robinson graduated from the University of South Florida with a B.S. in Chemical Engineering.

Krista O’Neal

Director of Business Development

Krista O’Neal serves as the Director of Business Development at EN Rx. Krista focuses on optimizing business strategies/processes to improve customer satisfaction and overall experience. Prior to EN Rx, O’Neal was responsible for leading teams to increase the company’s revenue.

O’Neal earned a degree in Marketing/Management from Northwood University graduating in 2001, lives in Texas with her two sons.

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

Southeastern Operations Manager

Eric Arenberg, B.S./M.S., is the Southeastern 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.

Senior Geologist
Wesley Wiley, P.G., is a Senior Geologist, providing a variety of design and implementation services for EN Rx. He has been with EN Rx for three years as part of a 30 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, P.E. is a Project Engineer for EN Rx, Inc. She has been with EN Rx for over five years helping clients design remedial systems using EN Rx products as well as serving in field operations. Her previous experience included a position as Staff Engineer for Geohazards, Inc., with activities ranging from environmental forensics to subsidence investigations. Mrs. Wharton graduated from the University of Florida with a B.S. in 2013 in Environmental Engineering.

John H. Sohl, III

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

Professor of Geology
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

Co-Founder and Principal Engineer
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

Senior Vice President
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.