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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Checklists and templates for site investigation reports and cleanup plans

Get help preparing remedial investigations, feasibility studies, and cleanup action plans.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/cleanup-report-checklists-and-templates

Tools for cleaning up contaminated sites

We have online tools and statistical packages to help you clean up contaminated sites.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-clean-up-tools

Empirical demonstrations under MTCA

Empirical demonstrations can show that applicable groundwater cleanup levels aren’t being exceeded.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/empirical-demonstrations-mtca

Online cleanup guide for homeowners and small businesses

An online cleanup guide for homes and small business properties that might be contaminated.

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

Acronyms & glossary for the Toxics Cleanup Program

We have a list of acronyms and terms commonly used in contaminated site cleanup work.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/toxic-cleanup-acronyms

Vapor intrusion

We have guidance that helps you evaluate and respond to vapor intrusion at your MTCA cleanup site.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/vapor-intrusion-overview

Underground Storage Tank information for new owners and new installations

Information for new Underground Storage Tank (UST) owners and installation of new tanks.

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

Underground storage tank service providers

Information for underground storage tank (UST) service providers and for those looking to find one.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/ust-owner-and-operator-resources/underground-storage-tank-service-providers

Approved sampling and analysis procedures

Approved laboratory analysis methods for cleaning up contaminated sites.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-clean-up-tools/sampling-and-analysis-procedures

Overview of compliance & enforcement at Ecology

View the compliance and enforcement authority we have, and what actions we have recently taken.

https://ecology.wa.gov/regulations-permits/compliance-enforcement/overview-of-compliance-enforcement

Advance notice of oil transfer

We require certain types of facilities and vessels to tell us in advance when transferring oil.

https://ecology.wa.gov/regulations-permits/reporting-requirements/advance-notice-of-oil-transfer

Spill prevention inspections for facilities

We inspect oil facilities to provide technical assistance and ensure rule compliance.

https://ecology.wa.gov/regulations-permits/compliance-enforcement/facility-spills-prevention-inspections

Contingency planning for oil industry

Oil-handling operations must have contingency plans describing how they would respond to oil spills.

https://ecology.wa.gov/regulations-permits/plans-policies/contingency-planning-for-oil-industry

Operations manual requirements

Operations manuals help prevent spills during the transfer, storage, and handling of oil.

https://ecology.wa.gov/regulations-permits/plans-policies/operations-manual-for-regulated-facilities

Oil transfers and transfer inspections

Our oil-transfer requirements help prevent spills during bulk-oil transfers.

https://ecology.wa.gov/regulations-permits/compliance-enforcement/oil-transfers

Pre-booming, alternative measures, and equivalent compliance

Oil-transfer operations must include protective measures to contain potential spills.

https://ecology.wa.gov/regulations-permits/compliance-enforcement/pre-booming-requirements

Safe and effective threshold determination reports

Safe and effective reports establish conditions for protecting open water with oil containment boom.

https://ecology.wa.gov/regulations-permits/plans-policies/safe-effective-threshold-determination-reports

Oil spill prevention plans for facilities

Oil spill prevention plans reduce the risk of oil spills at large refineries and marine terminals.

https://ecology.wa.gov/regulations-permits/plans-policies/spills-prevention-plans-for-facilities

Spill enforcement

Spills into water harm the environment, violate state law, and may result in a penalty.

https://ecology.wa.gov/regulations-permits/compliance-enforcement/spill-enforcement

Emergency response towing vessel

The emergency response towing vessel (ERTV) helps prevent oil spills from ships and barges.

https://ecology.wa.gov/regulations-permits/reporting-requirements/emergency-response-towing-vessel