Publications Home



Soil Contamination (212 publications 2008-2024)

2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016 · 2013 · 2012 · 2011 · 2009 · 2008 ·

Title (link to summary)NumberDate (released or updated)
Implementation Memorandum No. 21: Frequently Asked Questions (FAQs) Regarding Vapor Intrusion (VI) and Ecology's 2009 Draft VI Guidance 18-09-046November 2018
Implementation Memorandum No. 18: Petroleum Vapor Intrusion (VI): Updated Screening Levels, Cleanup Levels, and Assessing PVI Threats to Future Buildings 17-09-043January 2018