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ARTICLE · 11 JUNE 2020

San Francisco Bay Region Issues Risk-Based Screening Levels For PFAS At Cleanup Sites

Holland & Knight
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California continues to develop tools for evaluating per- and polfluoroalkyl substances (PFAS) at cleanup sites. In May 2020, the San Francisco Bay Regional Water Quality Control Board...

United StatesEnvironment
Letitia Moore
Letitia Moore
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California continues to develop tools for evaluating per- and polfluoroalkyl substances (PFAS) at cleanup sites. In May 2020, the San Francisco Bay Regional Water Quality Control Board issued an "Interim Final Environmental Screening Levels (ESLs) for Per- and Polfluoroalkyl Substances (PFAS): Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoate (PFOA)" Memorandum setting groundwater and soil ESLs addressing direct exposure, ecotoxicity and ingestion risk levels for PFOS and PFOA. The PFAS ESLs are part of the ongoing effort by the San Francisco Regional Water Board to "provide conservative screening levels ... to help expedite the identification and evaluation of potential environmental concerns at contaminated sites."1

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