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.

See more about this collection...

Chapters 173-424 and 173-455 WAC – Clean Fuels Program

This is the rulemaking page for Chapters 173-424 and 173-455 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-424-455

Chapter 173-441 WAC – Reporting of Emissions of Greenhouse Gases

This is the rulemaking page for Chapter 173-441 WAC.

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

Chapters 173-422 and 173-422A WAC – Motor Vehicle Emission Inspection

This is the rulemaking page to repeal Chapters 173-422 and 173-422A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-422-422a

Chapters 173-491, 173-400, 173-455 WAC – Emission Standards and Controls for Sources Emitting Gasoline Vapors

This rulemaking was withdrawn August 19, 2021 regarding WAC 173-491, WAC 173-400 and WAC 173-455.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-491-jul13

Chapter 173-455 WAC – Air Quality Fee Rule

This is the rulemaking page for Chapter 173-455 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-455

Chapters 173-441 and 173-446 WAC – Electricity Markets

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

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

Chapters 173-400 and 173-401 WAC, General Regulations for Air Pollution Sources

This is the rulemaking page for Chapters 173-400 and 173-401 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-400-401-air-pollution-sources

Chapter 173-448 WAC – Air Quality in Overburdened Communities

This is the rulemaking page for Chapter 173-448 WAC, Air Quality in Overburdened Communities.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-448

November 9, 2023 presentation about 2023-2025 electric school bus grant

This is the November 9, 2023 presentation about 2023-2025 electric school bus grant.

https://ecology.wa.gov/20231109evschoolbus

VW grant notice for garbage trucks, etc. May 2023 (updated August 2023)

This is the August 2023 grant notice for zero-emission refuse vehicles, street sweepers, freight switcher locomotives, and port cargo handling equipment.

https://ecology.wa.gov/asset-collections-doc-assets-air-quality-vw-202305vwgrant

Grant Application for Diesel to Zero-Emission Refuse Vehicles, Street Sweepers, PCHE, and Freight Switchers: Frequently Asked Questions, July 17, 2023

This is the July 2023 frequently asked questions (FAQ) about the grant for zero-emission refuse vehicles,street sweepers, port cargo handling equipment, and freight switcher locomotives.

https://ecology.wa.gov/202307vwzevfaq

Application checklist for Level 2 EV charging, July 2024

This is the July 2024 application checklist for Level 2 EV charging stations.

https://ecology.wa.gov/202407ev2checklist

Level 2 Grant application instructions

Application instructions for Level 2 grant funding: Charge Where You Are

https://ecology.wa.gov/202309ev2instructions

Presentation about grants for overburdened communities

This is a presentation for the June 2024 listening sessions about grants for overburdened communities.

https://ecology.wa.gov/202406obcgrantspresentation

Grant Application for Air Quality Clean School Bus Grant Program 2023–2025 (round 2): Frequently Asked Questions, August 1, 2024

This is the August 1, 2024 frequently asked questions (FAQ) about the grant application for Air Quality Clean School Bus Grant Program 2023–2025 (round 2).

https://ecology.wa.gov/20240801schoolbusfaq

Presentation about grants for electric school buses, June 25, 2024

This is a June 25, 2024 presentation for grants for electric school buses.

https://ecology.wa.gov/20240625eschoolbuspresentation

Presentation for September/October 2024 information sessions about grants for overburdened communities

This is the presentation for September/October 2024 information sessions about grants for overburdened communities.

https://ecology.wa.gov/202409obcgrantspresentation

Ecology grants - general terms and conditions example

Example of Ecology's general terms and conditions for grant agreements

https://ecology.wa.gov/ecologyexamplegtcgrants-9-12-24

Grant Application for Air Quality in Overburdened Communities Grant: Frequently Asked Questions, October 15, 2024

This is the October 15, 2024 frequently asked questions (FAQ) about the grant application for Air Quality in Overburdened Communities Grant.