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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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

Manuals & procedures for accredited labs

Download the procedure manual, and find tips and tools for accredited environmental labs.

https://ecology.wa.gov/regulations-permits/permits-certifications/laboratory-accreditation/manual-and-procedures-for-accredited-laboratories

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