Executive Team


Scott B. Wilson

Mr. Wilson is a widely published expert with 25 years of experience in applied microbiology and bioremediation processes. He is a recognized thought leader in the commercialization of environmental technologies with a proven track record spanning three decades. As Vice President of Remediation Technology with Groundwater Technology, Inc., he led the team of scientists and engineers who developed GTI’s industry-leading in situ bioremediation processes.

Amy Dickerson, C.P.A.

Ms. Dickerson, is responsible for the overall financial management of the Company including financial reporting and transparency. She oversees multiple corporate functions including accounting, budget, credit, insurance, tax, treasury and human resources. Prior to joining REGENESIS, Ms. Dickerson held CFO and Controller positions within the banking industry after starting her career with KPMG in public accounting. She holds a B.S. in accounting and a B.S. in psychology from Oregon State University, Corvallis, OR.

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Jeremy Birnstingl, Ph.D.

Dr. Birnstingl directs technology commercialization and acquisition efforts for REGENESIS, worldwide. He oversees new product commercialization efforts and operates as a senior technical director on key remediation projects involving advanced in situ technologies. Dr. Birnstingl previously served as the founding Managing Director of REGENESIS in Europe, responsible for establishing technical and administrative teams across the continent within multiple legislative regimes and operating currencies. Prior to joining REGENESIS he served as Principal Environmental Scientist with URS Corporation.

Craig Sandefur

Mr. Sandefur is a recognized expert in the field of in situ remediation technologies. He has over 17 years of experience in the remediation industry and has developed much of REGENESIS’ current product application capabilities. In this role, Mr. Sandefur was the focal point in the development of what is now commonly accepted direct-push application protocols for delivery of electron acceptors like ORC® and ORC Advanced®, electron donors like HRC® and 3-D Microemulsion® and chemical oxidants like RegenOx®. He was directly involved in the development of ORC and HRC design software which has become some of the most widely used software in the environmental industry. Mr. Sandefur has successfully designed and implemented a wide-range of in situ remediation strategies on hundreds of projects and provides expertise in the areas of technical trouble shooting and field performance. Mr. Sandefur received his BSc. in Biology from Southwestern Union College in Keene, TX and his MSc. in Geology from Loma Linda University in Riverside, CA.

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Rick Gillespie

Mr. Gillespie serves as Senior Vice President North America for REGENESIS, directing a team of technical sales consultants and engineers across North America providing industry-leading support to REGENESIS customers. He has over 20 years of experience in the environmental remediation industry. Mr. Gillespie joined REGENESIS after a successful career as a Research Scientist at Battelle Memorial Institute. His work experience has been focused on innovative remediation technologies for the treatment of chlorinated solvents, petroleum hydrocarbons, and metals in soils and groundwater. Mr. Gillespie was a co-author on the Multi-Site Air Sparging Design Paradigm. In addition, he was a contributor to the publication Principles and Practices of Enhanced Anaerobic Bioremediation of chlorinated Solvents. Mr. Gillespie earned his B.S. in Environmental Science from the University of Oklahoma.

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Gareth Leonard

Mr. Leonard is the Managing Director of REGENESIS Europe, in which role he manages a dedicated team of in situ remediation specialists to provide the design and implementation of remedial solutions for environmental consultants, remediation contractors and end-users. Mr. Leonard has worked in the remediation industry for 13 years. In 2006, he joined REGENESIS Europe, specialists in scientifically proven product and service-based solutions for the in situ remediation of contaminated groundwater and soil. Prior to this, Mr. Leonard gained his expertise as a Senior Project Manager at a remediation contracting firm and as a Lead Drilling Fluids Engineer in offshore oil exploration. He holds a Certificate of Technical Competence (4TMHCL), an MSc in Environmental Chemistry and a BSc (Hons) in Geology.

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Tricia Rodewald

Ms. Rodewald serves as Vice President of Marketing and is responsible for the brand and marketing efforts for the company. Prior to joining Regenesis, Ms. Rodewald provided strategic marketing consulting services to both large and small companies in the banking, furniture and technology markets. A frequent guest speaker on LinkedIn business development strategies, she has an extensive background in a wide array of industries including; construction, healthcare, medical device, technology, office furniture and education. Over the span of her 20+ year career, Ms. Rodewald has held Vice President and Director positions within the healthcare, medical device, and construction industries – most recently with the Penhall Company – systematically architecting and executing on high-level marketing, business development and sales plans focused on metrics and performance.

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Kristen Thoreson, Ph.D.

Dr. Thoreson leads the chemical research and product development program. She has been involved in the development and implementation of many REGENESIS products, including the recent launch of PlumeStop® Liquid Activated Carbon. Dr. Thoreson is trained as a chemist, and her graduate and post-doctorate research focused on mechanistic investigations of chlorinated ethene degradation pathways using molecular models and compound specific isotope analysis (CSIA) for both biotic and abiotic systems. She obtained her BSc in chemistry from the University of Wisconsin – La Crosse, and her PhD in inorganic chemistry from the University of Minnesota. She also spent time as a postdoctoral associate at the Helmholtz Zentrum in Munich, Germany as a part of the Research Unit for Environmental Organic Isotope Chemistry.

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