California Agencies Proceed With Revisions to Vapor Intrusion Guidance

California agencies issued a public notice that they will hold a workgroup to answer questions and engage with stakeholders on the agencies’ latest vapor intrusion guidance. The workgroup comes following years of confusion among stakeholders regarding the agencies’ application of draft guidance for addressing vapor intrusion, including during site cleanup and redevelopment.

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California State Water Board Announces Scoping Phase for New Vapor Intrusion Cleanup Requirement

On March 25, 2022, the California State Water Resources Control Board (State Water Board) issued a notice of public scoping meeting for a proposed amendment to its rules governing site cleanup. This amendment would establish “requirements for the investigation and assessment of vapor intrusion at cleanup sites statewide.”

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