Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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July 2018 vapor intrusion listening session: Q&As

Questions and answers from the vapor intrusion listening session in Bellevue, July 23, 2018.

https://ecology.wa.gov/20180723vaporlisteningsessonqa

Brownfields funding opportunities in Washington State

Download a comprehensive list of federal and state funding and technical assistance opportunities for redeveloping brownfields in Washington.

https://ecology.wa.gov/brownfieldsfundingoverview

Eastern Washington Clean Sites Initiative accessible list of cleanup sites

The Eastern Washington Clean Sites Initiative funds cleanups to improve residents’ quality of life.

https://ecology.wa.gov/csi-sites-accessible-list

Cleanup Rule (WAC 173-340) exploratory rulemaking: 2018 comments

This document contains comments received from the public during the Exploratory Rulemaking process, from February 15 through May 11, 2018. These include comments provided through the online eComment system, by mail, by email, and on comment cards at the April 3rd listening session.

https://ecology.wa.gov/cleanuprulemakingexprulemakingcommentsthru051118

July 2018 vapor intrusion listening session: Slides

PowerPoint slides from the vapor intrusion listening session in Bellevue, July 23, 2018.

https://ecology.wa.gov/20180723vaporlisteningsessslides

2015 changes to 2009 vapor intrusion toxicity values and screening levels

2015 Excel spreadsheet of changes to the 2009 vapor intrusion toxicity values and screening levels.

https://ecology.wa.gov/2015vaporintrusionupdates

Boeing Auburn Site Map Plain Text

Plain text description of the Boeing Auburn groundwater contamination site map.

https://ecology.wa.gov/boeing-auburn-site-map-plain-text

Common cleanup situations for homeowners and small businesses

Learn about common cleanup situations likely to affect home and small business owners.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/common-cleanup-situations-for-homeowners-small-b

FAQ: Evaluate options to clean up homes and small businesses

These FAQs help homeowners and small businesses evaluate cleanup options and complete cleanup work.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/evaluation-cleanup-for-homeowners-small-busine

FAQ: Investigate and report toxic releases

FAQs to help homeowners and small businesses investigate and report toxic releases.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/investigating-reporting-toxic-releases

Records search checklist

Before buying property, use the records search checklist for due diligence and to know past uses.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/records-search-checklist

Underground storage tank closures

Important information about closing your underground storage tanks.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/ust-owner-and-operator-resources/tank-closures

Cleanup Levels and Risk Calculation (CLARC)

CLARC's resources help you set contaminated site cleanup levels that comply with Washington law.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-cleanup-tools/clarc

Sand & Gravel Permit guidance

Guidance to implement your Sand & Gravel General Permit.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/stormwater-permittee-guidance-resources/sand-and-gravel-permit-guidance

CLARC glossary

A glossary for terms and acronyms in CLARC's resource pages.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-cleanup-tools/clarc/glossary

Tools for cleaning up petroleum contaminated sites

We have online tools and guidance to help you clean up petroleum-contaminated sites.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-cleanup-tools/petroleum-cleanup-tools

CLARC guidance

Use these guidance documents in combination with CLARC to establish cleanup levels.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-cleanup-tools/clarc/guidance