NGWA Event and Education Recordings Archive

David Henrich, CWD/PI, CVCLD, vice president of Bergerson-Caswell Inc., has been employed in the groundwater industry for 19 years. Henrich has spent three years as a member of the NGWA Government Affairs Committee, two of those years as the chair of the Geothermal Subcommittee, and is currently serving on the DOT/OSHA Subcommittee. He has presented at NGWA seminars, brown bag Webinars, and numerous NGWA Legislative Fly-Ins. Henrich also serves on the board of directors for the Minnesota Water Well Association, and is a member of IGSHPA and ASHRAE.

Mr. Avram Frankel is a professional engineer, technical expert, and program manager with more than 29 years of experience including work on a wide range of commercial/industrial, municipal, state, and federal sites regulated under CERCLA, RCRA, TSCA, and numerous state programs. A civil engineer licensed in California, Oregon, Georgia, and Washington, Mr. Frankel provides his clients with strategic management and technical analysis in support of due diligence, redevelopment, technology evaluation, remediation, and legal/litigation matters. With a focus on enhancing health and safety, restoration of drinking water aquifers, and delivery of potable water, he has overseen the design, costing, installation, and optimization of groundwater remediation and potable water treatment systems across the U.S. over a wide range of site scales, geologies, and technical complexities. Mr. Frankel’s experience on large, complex, and performance-based projects is extensive, including the successful application of combined remedies and remediation of plumes measured in miles. These projects often included the holistic management and ultimate remediation of large commingled and multi-contaminant groundwater plumes in challenging stakeholder environments and under litigation or settlement conditions. Mr. Frankel has spent a large portion of his career addressing emerging contaminants of the past and present including hexavalent chromium, perchlorate, 1,4-dioxane, per- and polyfluoroalkyl substances (PFAS, and 1,2,3-trichloropropane (1,2,3-TCP). Both a practitioner and testifying expert, he currently serves as a technical expert in many groundwater contamination and treatment matters.

Steve Sliver obtained his bachelor’s degree in engineering from Michigan Technological University in 1985. He then became a project engineer with Pitometer Associates, responsible for engineering surveys of municipal water supply systems in numerous cities throughout the eastern United States. His civil service career began in 1987 when he accepted an engineering position in the Hazardous Waste Program of what is now the Michigan Department of Environmental Quality. In 2005, he accepted a management position in the solid waste and storage tanks programs. Steve continued in that role until 2015 when he accepted the Assistant Director position for the Waste Management and Radiological Protection Division, responsible for promoting recycling and waste utilization, pollution prevention, ensuring the proper management of materials under the hazardous waste and liquid industrial by-products, solid waste, scrap tire, medical waste, and e-waste programs, and protecting the public and environment from the hazards associated with radioactive materials. Steve recently agreed to assist in Michigan’s effort to identify and remediate sources of per- and polyfluoroalkyl substances (PFAS) contamination throughout the state. He serves as the department’s representative on PFAS related activities.