DRAFT Vapor Intrusion (VI) Investigations and Short-term Trichloroethene (TCE) Toxicity (Implementation Memo No. 22)
DRAFT 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 While much of the draft guidance is applicable to sites where TCE VI is a possibility, this memo addresses several issues that were not previously considered.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.
REVISION NOTE: This memo was published as a draft for public comment on November 21, 2018. Comments were accepted on the draft through Monday, January 7, 2019.
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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|
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)
Updated Process for Initially Assessing the Potential for Petroleum Vapor Intrusion (Implementation Memorandum #14)
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
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