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DRAFT Petroleum Vapor Intrusion (VI): Updated Screening Levels, Cleanup Levels, and Sampling Considerations (Implementation Memo No. 18)

DRAFT FOR PUBLIC COMMENT Comment on this draft
Publication number Date Published
17-09-043November 2017
VIEW NOW: Acrobat PDF format (Number of pages: 27) (Publication Size: 687KB)
Note: Revised November 2017

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Author(s) Mark Gordon
Description This memorandum provides petroleum vapor intrusion guidance from the Washington State Department of Ecology (Ecology). To ensure consistency with the Model Toxics Control Act (MTCA) and Ecology’s previous petroleum vapor intrusion guidance, this memo proposes several changes to the vapor intrusion data tables in Ecology’s Cleanup Levels and Risk Calculator (CLARC). You’re invited to comment on these proposed changes through September 22, 2017. Submit your comments to Mark Gordon at or via website above.
This draft memo was revised in November 2017 by adding a formerly missing row to Table B-3. No other changes were made to this draft.
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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Contact Toxics Cleanup Program at 360-407-7170
Keywords Total petroleum hydrocarbons (TPH), Air cleanup levels, Petroleum vapor intrusion (PVI), Groundwater cleanup levels, Soil gas screening levels, Groundwater vapor intrusion screening levels, Model Toxics Control Act (MTCA)
WEB PAGE Vapor Intrusion

Guidance for Remediation of Petroleum Contaminated Sites

Updated Process for Initially Assessing the Potential for Petroleum Vapor Intrusion (Implementation Memorandum #14)

DRAFT: Guidance for Evaluating Soil Vapor Intrusion in Washington State: Investigation and Remedial Action

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