The updated version incorporates numerous policy and technical changes that have occurred since the guidance was first issued in October 2009. It includes recommendations on:
Necessary data to collect;
Considerations for public involvement;
Options for implementing mitigation actions; and
Direction for completing the VI portion of the cleanup.
The guidance also includes information from four vapor intrusion Implementation Memos issued by Ecology over the past five years. Three of the memos have been updated and transformed into Appendices in the new guidance. The fourth, which consisted of a series of frequently asked questions, has been incorporated directly into the text of the document.
All fields are optional unless otherwise indicated.
Thank you for subscribing to the Draft Guidance for Evaluating Vapor Intrusion in Washington State (2021) mailing list.