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Title

Vapor Intrusion (VI) Investigations and Short-term Trichloroethene (TCE) Toxicity (Implementation Memo No. 22)

DRAFT FOR PUBLIC COMMENT Comment on this draft
 
Publication number Date Published
18-09-047November 2018
VIEW NOW: Vapor Intrusion (VI) Investigations and Short-term Trichloroethene (TCE) Toxicity (Implementation Memo No. 22) (Number of pages: 33) (Publication Size: 249KB)
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Author(s) Ed Jones (Hazardous Waste and Toxics Reduction) and Mark Gordon (Toxics Cleanup Program)
Description This memo applies to any cleanup site where trichloroethene (TCE) is a subsurface contaminant of concern and a vapor intrusion (VI) pathway is being evaluated. Trichloroethene is a chemical also known as trichloroethylene or TCE.

In 2009, the Washington State Department of Ecology published Draft Vapor Intrusion Guidance, publication no. 09-09-047. This memo supplements the draft 2009 VI guidance. While much of the draft guidance is applicable to sites where TCE VI is a possibility, this memo addresses several issues that were not previously considered. This includes: 1) response speed, 2) focus on women of childbearing age, and 3) type of public outreach.

The memo also provides Method B and C indoor air action levels, as well as soil gas and groundwater screening levels to help evaluate whether there is the potential for short-term TCE risks to occur.

You are invited to comment on draft Memo No. 22. Submit your comments via our Public Comment Form through Monday, January 7, 2019, at http://wt.ecology.commentinput.com/?id=7M58V

REVISION NOTE:

This memo was published as a draft for public comment on November 21, 2018. Comments will be accepted on this draft through Monday, January 7, 2019.
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 Policy & Technical Support Unit, Toxics Cleanup Program at 360-407-7170
Keywords air contamination, trichloroethylene (TCE), Vapor Intrusion (VI), volatile organic compounds (VOC), soil contamination, groundwater contamination, indoor air quality, Subsurface vapor, Vapro Intrusion pathways, trichloroethene (TCE)
WEB PAGE Vapor Intrusion
RELATED PUBLICATIONS Title:

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

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

Petroleum Vapor Intrusion (PVI): Updated Screening Levels, Cleanup Levels, and Assessing PVI Threats to Future Buildings (Implementation Memo No. 18)

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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