March 24, 2021

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John Merrill, Rula Deeb, and Lydia Dorrance Coauthored Managing PFAS in Environmental Due Diligence: The Future’s Uncertain for HydroVisions

John Merrill, Rula Deeb, Ph.D., BCEEM, PMP, and Lydia Dorrance, Ph.D., (California) coauthored an article entitled “Managing PFAS in Environmental Due Diligence: The Future’s Uncertain” for publication in the Spring 2021 issue of HydroVisions.

John, Rula, and Lydia’s coauthor was Ned Witte, Godfrey & Kahn.

John Merrill is a Senior Staff Engineer based in California with experience in environmental site investigation and remediation, litigation support, and applied research in collaboration with university partners. John focuses on emerging contaminants, including per- and polyfluoroalkyl substances (PFAS), 1,4-dioxane, and 1,2,3-trichloropropane.

Rula Deeb is a Senior Principal based in California with more than 25 years of experience in private practice and academia addressing the cross-media fate and transport of contaminants and the remediation of complex soil and groundwater sites. Focusing on emerging contaminants, Rula has led strategic planning, business development, and project execution for a variety of industrial, municipal, and federal clients.

Lydia Dorrance is a Senior Scientist based in California with more than 10 years of experience supporting clients with expertise in geochemistry, environmental forensics, and environmental litigation. Lydia draws from her consulting experience and her academic background in environmental chemistry to implement site investigations, manage large environmental datasets, coordinate projects, and provide technical support.

HydroVisions, the Groundwater Resources Association of California’s (GRA) quarterly newsletter, covers a wide range of timely, relevant groundwater topics through a series of recurring columns, conference summaries, and research papers. Information on groundwater legislation, GRA Branch activities, and upcoming events is also included in the newsletter, which is emailed to more than 2,300 groundwater practitioners and other interested parties throughout California.

The Groundwater Resources Association of California is dedicated to resource management that protects and improves groundwater supply and quality through education and technical leadership


Current approaches for managing per- and polyfluoroalkyl substances (PFAS) in environmental due diligence are widely varied, due in large part to PFAS not being listed as hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA or Superfund). This article describes approaches currently being used to address PFAS in environmental due diligence and details current and potential future impacts of PFAS on property transactions.

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About the article: FAS in Environmental Due Diligence: The Future’s Uncertain
About Hydrovisions:
For consultation regarding PFAS, contact Rula Deeb at This email address is being protected from spambots. You need JavaScript enabled to view it.
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