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.
Choosing an analytical laboratory
Take these steps and consider what you need when choosing an environmental laboratory.
https://ecology.wa.gov/regulations-permits/permits-certifications/laboratory-accreditation/how-to-choose-an-analytical-laboratory
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/underground-storage-tank-closures
Quality assurance manual guidance for environmental labs
This guidance can help you write or review a quality assurance manual for your lab.
https://ecology.wa.gov/regulations-permits/permits-certifications/laboratory-accreditation/laboratory-quality-assurance-manual-checklist
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
Clean Water Act updated analytical methods
Learn about updates to approved analytical methods for testing non-potable water.
https://ecology.wa.gov/regulations-permits/permits-certifications/laboratory-accreditation/methods-update-rule
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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