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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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

TransAlta Power Plant

The TransAlta agreement lowers harmful air pollutants from Washington's only coal-fired power plant.

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

Washington's air quality implementation plan

The State Implementation Plan is an overarching plan to keep Washington's air clean.

https://ecology.wa.gov/regulations-permits/plans-policies/state-implementation-plans

Sulfur dioxide air quality designations

We’re deciding if parts of Washington don't meet national air quality standards for sulfur dioxide.

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

Attainment State Implementation Plans

Learn about Washington's plans to ensure communities meet national air quality standards.

https://ecology.wa.gov/regulations-permits/plans-policies/state-implementation-plans/attainment-sips

Annual air quality registration

Emission registration program for industrial air pollution.

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

Washington Emissions Inventory Reporting System (WEIRS)

Submit your emissions data using WEIRS.

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

Infrastructure, rule, & program plans

Our plans and rules to improve air quality and meet national air quality standards.

https://ecology.wa.gov/regulations-permits/plans-policies/state-implementation-plans/infrastructure-sips

Emissions reporting for small sources of air pollution

Learn how to submit your emissions data using the Source Management System (SMS).

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

Plans for maintaining air quality

View current plans to improve air quality and meet national air quality standards.

https://ecology.wa.gov/regulations-permits/plans-policies/state-implementation-plans/maintenance-sips

Transportation implementation plans

Find out how we make sure transportation investments are consistent with air quality goals.

https://ecology.wa.gov/regulations-permits/plans-policies/state-implementation-plans/transportation-conformity

Permit Register

The Permit Register includes actions or changes to air operating permits.

https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits/air-operating-permit/permit-register

Health impact review of toxic air pollution

We must review new projects that emit toxic air pollutants.

https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits/notice-of-construction-permit/health-impact-assessments-of-toxic-air-pollutants

About the air monitoring network

We and our partners maintain a network of air monitoring stations to measure air pollution in Washington.

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

Information for air monitoring professionals

Standard procedures, quality assurance, and monitoring guidance for air monitoring professionals.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/information-for-air-monitoring-professionals

Air quality permits

Permits for industrial air pollution and burning activities.

https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits

Certification for landfill operators

How to get certified to operate and inspect solid waste landfill facilities.

https://ecology.wa.gov/regulations-permits/permits-certifications/certification-for-landfill-operators

Chapter 173-423 WAC<br>and WAC 173-400-025 – Low Emission Vehicles

This is the rulemaking page for Chapter 173-423 WAC and Chapter 173-400 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-423-400

Chapters 173-423 and 173-400 WAC – Clean Vehicles Program

This is the rulemaking page for Chapter 173-423 WAC and Chapter 173-400 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-423-400jan18