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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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

VW Final Executed Trust Agreements

United States notice of final trust agreement for VW federal settlement.

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/VW/VWFinalExecutedTrust-Agreements

2017 VW affected vehicles registered in Washington.

The text version for the map showing where, by percentage, the affected cars are registered in Washington.

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/VW/2017AffectedVWCars-alt

2017 VW Diesel NOx By Census

An Excel file that shows 2017 Diesel NOx pollution by census tract.

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/VW/2017VWDieselNOxByCensus

VW settlement funds distribution

An image showing how the VW settlement funds will be distributed

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/VW/20190205VWsettlementfundsdistribution-alt

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

Notice of construction permit

Businesses must get a permit before installing or changing a source of air pollution.

https://ecology.wa.gov/Regulations-Permits/Permits-certifications/Air-Quality-permits/Notice-of-Construction-permit

Volkswagen (VW) Nitrogen Oxides Emissions in Washington-alt

The text version of the map where the nitrogen oxides emissions can be found in Washington.

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/VW/2017VWNitrogenOxideEmissions-alt

Technical Support Document (Amended) - Asphalt Plants

Amended technical support document for general order for portable and stationary asphalt plants

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/GOA/20110418AsphaltPlantsTechSupport

Wood-Fired Hydronic Heaters Certified in Washington

List of wood-fired hydronic heaters that meet Washington standards

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/Smoke-fire/20170427HydronicHeaters

Wood-Fired Furnaces Certified in Washington

List of wood-Fired Furnaces that meet Washington standards

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/Smoke-fire/20161215WoodFurnaces

2017 affected Volkswagen (VW) registered vehicles in Washington

Top Washington counties with registered 2.0 and 3.0 liter diesel Volkswagen (VW) vehicles

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/VW/2017VWRegisteredCars

Areas affected by nitrogen oxides emissions in Washington

Map of nitrogen oxides emissions from diesel Volkswagen (VW) vehicles in Washington

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/VW/2017VWDieselNOx

Pacific Northwest Volkswagen (VW) Zero-Emissions Vehicle (ZEV) Investment Proposal

Investment proposal for Pacific Northwest Volkswagen (VW) Zero-Emissions Vehicle (ZEV)

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/VW/20161223PNWZEVInvestmentProposal

TransAlta Best Available Retrofit Technology (BART) order, 6/18/10

This is the TransAlta Best Available Retrofit Technology (BART) order, 6/18/10.

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/TransAlta/TASignedBARTOrder

TransAlta Best Available Retrofit Technology (BART) order, revised, 12/13/11

This is the first revised TransAlta Best Available Retrofit Technology (BART) order, 12/13/11.

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/TransAlta/TransAltaRevisedBARTCO12-13-11

May 25, 2010 TransAlta agreement

This is the May 25, 2010 agreement between Ecology and TransAlta for the TransAlta power plant.

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/TransAlta/Transaltasignedagreement

TransAlta Memorandum of Agreement (MOA), 12/23/11

This is the Memorandum of Agreement (MOA) for TransAlta, 12/23/11.

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/TransAlta/TransAltasignedMOU

Infrastructure State Implementation Plan for 1997 Ozone Standard

State Implementation Plan Certification for the 1997 8-Hour Ozone Standard

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/SIP/InfrastructureSIP1997OzoneFinal2

Benton Clean Air Agency General Air Quality Rules

Including Benton Clean Air Agency rules into the State Implementation Plan

https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/SIP/BentonCombinedFilesSubmittal

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