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Title

Frequently Asked Questions (FAQs) Regarding Vapor Intrusion (VI) and Ecology’s 2009 Draft VI Guidance (Implementation Memo No. 21)

 
Publication number Date Published Date Revised
18-09-046June 2018November 2018
VIEW NOW: Frequently Asked Questions (FAQs) Regarding Vapor Intrusion (VI) and Ecology’s 2009 Draft VI Guidance (Implementation Memo No. 21) (Number of pages: 47) (Publication Size: 455KB)
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Author(s) Mark Gordon
Description This implementation memo applies to any cleanup site where vapor intrusion is a potential concern. In 2009, the Washington State Department of Ecology published draft vapor intrusion guidance, publication no. 09-09-047. This memo answers frequently asked questions about that guidance. Many of the questions are about technical or policy changes that have happened since we published the draft guidance in 2009.

REVISION NOTE: This memo was originally published as a review draft on June 22, 2018. In November 2018, we finalized it based on comments received during the draft memo’s public comment period July 5 through August 10, 2018.
REQUEST A COPY The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

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Keywords air contamination, Vapor Intrusion pathways, trichloroethylene (TCE), Vapor Intrusion (VI), volatile organic compounds (VOC), soil contamination, groundwater contamination, indoor air quality, Subsurface vapor, trichloroethene (TCE)
WEB PAGE Vapor Intrusion
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Model Toxics Control Act Regulation and Statute: MTCA Cleanup Regulation Chapter 173-340 WAC, Model Toxics Control Act Chapter 70.105D RCW, Uniform Environmental Covenants Act Chapter 64.70 RCW