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Environmental Policies Environmental Protection Agency (EPA) Vapor Intrusion Guidance

Environmental General Counsel PC

California Draft Vapor Intrusion Guidance Now Final

On February 23, 2023, California EPA (Cal EPA) finally released a “final draft” version of the much-awaited vapor intrusion guidance, Final Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion (VI Guidance)...more

Environmental General Counsel PC

New Vapor Intrusion Requirements in California Increasing Costs and Liabilities

By Catherine W. Johnson In February 2020, California EPA (Cal-EPA) released its Draft Supplemental Vapor Intrusion Guidance (“Draft Guidance”) – designed to promote consistency in the investigation of vapor intrusion among...more

Environmental General Counsel PC

California Vapor Intrusion Guidance Promises More Consistency

In February, the California Department of Toxic Substances Control, or DTSC, the State Water Resources Control Board, or SWRCB, and the San Francisco Bay Regional Water Quality Control Board released a much-anticipated draft...more

Manatt, Phelps & Phillips, LLP

Proposed Controversial California Vapor Intrusion Guidance Threatens to Hinder Redevelopment

After years in the making behind closed doors, on February 14, 2020, the California Department of Toxic Substances Control (DTSC), the San Francisco Bay Regional Water Quality Control Board and the California State Water...more

Environmental General Counsel PC

Public Comments on California’s New Vapor Draft Intrusion Guidance: What Next?

Public comments on California’s Draft Supplemental Vapor Intrusion Guidance (“DSVIG”) were due to Cal-EPA by June 1, 2020. So far, comments submitted indicate several California businesses and industries are concerned about...more

Pierce Atwood LLP

Maine Modifies Vapor Intrusion Guidance

Pierce Atwood LLP on

Addressing a hot topic, the Maine Department of Environmental Protection (DEP) just issued “Supplemental Guidance for Vapor Intrusion (VI) of Chlorinated Solvents and other Persistent Chemicals” superseding guidance issued in...more

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