Lessons Learned from PFAS Site Investigations & Development of Conceptual Site Models

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Abstract: The occurrence of per- and polyfluoroalkyl substances (PFAS) in environmental media is not at all an unexpected finding considering the widespread presence of these substances in consumer products, firefighting foams (AFFF), and commercial/industrial materials associated with manufacturing and services.  While sources, pathways and receptors may vary from place to place, a ubiquitous presence in the environment is being realized across urban, commercial, industrial and residential land use areas where there are undoubtedly many sources of PFAS to the environment. This situation presents challenges in attribution of impacts to responsible parties, and in an evolving regulatory landscape with few comparative standards and guidance, assessing investigative results to determine what levels constitute the need for some remedial action. This presentation explores several case studies of site investigation for PFAS in environmental media including air, groundwater, surface water and sediment using various techniques to examine source to environmental pathways to receptors for development of conceptual site models that become the basis for determining the need for those remedial actions.  

Approved For 1 NYS PDH Credit!

*Bio: Chris Wenczel is a Director at Environmental Resources Management (ERM) and professional geologist in New York with over 38 years of experience investigating and remediating contaminated sites. Mr. Wenczel's academic degrees are a BS in Geology and an MS in Hydrogeology.

As an ERM PFAS subject matter expert, he has experience since 2017 developing remedial actions providing strategic advice, regulatory interface/negotiations, supporting outside counsel, off-site characterization, conceptual site model development, air dispersion modeling, soil leachability modeling, and turn-key design of stormwater/wastewater treatment and air pollution control systems to reduce continued PFAS environmental impact from manufacturing operations.

Mr. Wenczel is past-President of LIAPG (current Vice-President) and Vice-President of the New York State Council of Professional Geologists (NYSCPG).

Email: chris.wenczel@erm.com

Buffet Dinner with the Presentation

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