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.
Chapter 173-925 WAC
This is the rulemaking page for Chapter 173-925 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-925
Cannabis Lab Report
Overview of Ecology's 2019 report to the Legislature on the state's cannabis lab accreditation program.
https://ecology.wa.gov/cannabis-lab-report-overview
Plan to improve cannabis lab accreditation
Ecology's overview of their plan to move cannabis lab accreditation to Ecology from the Liquor and Cannabis Board.
https://ecology.wa.gov/plan-for-cannabis-labs
Regulatory guidance for oil industry
Spills reporting and state requirements for Class 1-4 facilities, vessels, railroads, and pipelines.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-oil-industry
SEPA subject index
References to SEPA topics in rule and statute.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-subject-index
Proficiency testing requirements
Six proficiency testing sample providers are approved by our laboratory accreditation program.
https://ecology.wa.gov/regulations-permits/permits-certifications/laboratory-accreditation/proficiency-testing-providers
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