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 Best Available Retrofit Technology (BART) order, second revision, 7/29/20

This is the second revised TransAlta Best Available Retrofit Technology (BART) order, 7/29/20.

https://ecology.wa.gov/20200729transaltabartorderrevised

DES leased vehicle fuel use by agency

Reporting tool for DES leased vehicle fuel use by agencies

https://ecology.wa.gov/2021-des-leasedvehiclefueluseagency

2022 Greenhouse Gas Reporting Fee Schedule

Reporting fee schedule for greenhouse gases

https://ecology.wa.gov/20221026-ghgreportingfeeschedule

DES Permanent Assigned Vehicle and Daily Trip Vehicle Fuel Use

DES calculator for reporting permanent vehicle and daily trip fuel use.

https://ecology.wa.gov/2021-despermvehicle-dailyvehiclefueluse

Air Operating Permit Report for Fiscal Years 2022 and 2023, updated November 2021

This is the workload analysis and budget report for the Air Operating Permit Program for Fiscal Years 2022 and 2023, updated November 2021.

https://ecology.wa.gov/202111aopreportfy22

Technical Support Document for Best Available Retrofit Technology (BART) order second revision, TransAlta, 7/20

This is the technical support document for the second revision of the Best Available Retrofit Technology (BART) order for TransAlta, 7/20.

https://ecology.wa.gov/202007transaltabart2tsd

Spokane County's Second 10-Year Limited Maintenance Plan for Carbon Monoxide

State Implementation Plan Revision for Spokane County Second 10-Year Limited Maintenance Plan for Carbon Monoxide

https://ecology.wa.gov/spokaneco

Spokane County's Second 10‐Year Limited Maintenance Plan for Particulate Matter (PM10)Spokane County, Washington Second 10-Year Limited Maintenance Plan for PM10

State Implementation Plan Revision for Spokane County Second 10-Year Limited Maintenance Plan for PM10

https://ecology.wa.gov/spokanepm10second10lmp

Benton Clean Air Agency General Air Quality Rules

Including Benton Clean Air Agency rules into the State Implementation Plan

https://ecology.wa.gov/bentoncombinedfilessubmittal

2020 State Agency Greenhouse Gas Calculator

Calculator for state agencies to determine their greenhouse gas emissions

https://ecology.wa.gov/2020-state-agency-greenhouse-gas-calculator

Masonry heaters that meet Washington standards, October 10, 2016

This is the October 10, 2016 list of masonry heaters that meet Washington standards.

https://ecology.wa.gov/20161010masonryheaters

Areas affected by nitrogen oxides emissions in Washington

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

https://ecology.wa.gov/2017vwdieselnox

Fireplaces Certified in Washington

List of fireplaces that meet Washington standards

https://ecology.wa.gov/wood-fireplaces

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/2017vwnitrogenoxideemissions-alt

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/2017vwregisteredcars

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/20161223pnwzevinvestmentproposal

Volkswagen (VW) Notice of Penalty - State

State Notice of Penalty for Volkswagen (VW)

https://ecology.wa.gov/07082016vwnoticeofpenalty-state

Fact Sheet Addendum

Fact sheet addendum to the 2019 modified general permit

https://ecology.wa.gov/ffpmodifiedfsaddendum-draft

Wood-fired furnaces that meet Washington standards, August 19, 2022

This is the August 19, 2022 list of wood-fired furnaces that meet Washington standards.

https://ecology.wa.gov/20220819woodfurnaces

Auto Body Shop Surface Coating Guide, April 2020

This is the auto body shop surface coating guide, April 2020.

https://ecology.wa.gov/202004bodyshopsurfacecoat