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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Chapter 173-441 and 173-446 WAC, Cap-and-Invest Linkage

This is the rulemaking page for Chapters 173-441 and 173-446.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-441-446-linkage

Air monitoring network

Ecology's air monitoring network provides local air quality conditions.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/air-quality-monitoring-network

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

State Environmental Policy Act (SEPA)

We provide information about the State Environmental Policy Act (SEPA).

https://ecology.wa.gov/regulations-permits/sepa/environmental-review

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

Determining if areas in Washington meet national air quality standards

We determine whether areas in Washington meet national air quality standards.

https://ecology.wa.gov/regulations-permits/plans-policies/areas-meeting-and-not-meeting-air-standards

Biosolids laws, rules, and support documents

See Washington's biosolids laws, the administrative rules we operate under, and support documents.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/biosolids-laws-rules-and-support-documents

Rulemaking at Ecology

Find out about our rulemaking activities.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking

Aquatic weed control technical assistance

We provide advice on identifying, monitoring, and managing invasive freshwater aquatic plants.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/aquatic-weed-control-technical-assistance

Air quality emissions reporting

Emissions reporting for industrial air pollution.

https://ecology.wa.gov/regulations-permits/reporting-requirements/air-quality-emissions-reporting

Municipal stormwater permit compliance assurance program

We use a proactive approach to ensuring the permits are implemented and effective.

https://ecology.wa.gov/regulations-permits/compliance-enforcement/municipal-stormwater-compliance-assurance-program

Better Brakes Law: Guidance for manufacturers

Guidance for manufacturers on Washington's Better Brakes regulations.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/better-brakes-guidance

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

Noise pollution

Learn more about how to manage noise pollution.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/noise-pollution

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

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/clean-up-petroleum-contamination

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

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

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

Dangerous waste reporting requirements

Learn about dangerous waste reports, and how to notify us of dangerous waste activities.

https://ecology.wa.gov/regulations-permits/reporting-requirements/dangerous-waste-reporting-requirements