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...

Rulemaking proposed language (WAC 173-423) 11/07/18

This is the proposed rule language for WAC 173-423, Low Emission Vehicles.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-423-11-07-1

Rulemaking proposed language (WAC 173-430) 12/04/18

This is the proposed rule language for WAC 173-430, Agricultural Burning.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-423-12-04-1

Rulemaking proposed language (WAC 173-400) 06/22/21

This is the proposed rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-400-06-22-2

Rulemaking proposed language (WAC 173-423) 06/22/21

This is the proposed rule language for Chapter 173-423 WAC, Low Emission Vehicles.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-423-06-22-2

Rulemaking proposed language (WAC 173-441) 10/06/21

This is the proposed rule language for Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-441-10-06-21

Rulemaking proposed language (WAC 173-407) 10/04/17

This is proposed rule language for WAC 173-407 Carbon Dioxide Mitigation Program, Greenhouse Gases Emissions Performance Standard and Sequestration Plans and Programs for Thermal Electric Generating Facilities

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-407-2017100

Rulemaking proposed language (WAC 173-455) 09-07-22

This is proposed rule language for Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-455-09-07-22

Rulemaking proposed language (WAC 173-400) 09-07-22

This is proposed rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-400-09-07-22

Rulemaking proposed language (WAC 173-423) 09-07-22

This is proposed rule language for Chapter 173-423 WAC, Clean Vehicles Program.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-423-09-07-22

Rulemaking proposed language (WAC 173-405) 11/07/18

This is the proposed rule language for WAC 173-405, Kraft Pulping Mills.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-405-11-07-1

Rulemaking proposed language (WAC 173-410) 11/07/18

This is the proposed rule language for WAC 173-410, Sulfite Pulping Mills.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-410-11-07-1

Rulemaking proposed language (WAC 173-444) 09/02/20

This is the proposed rule language for Chapter 173-444 WAC, Clean Energy Transformation Rule.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-444-09-02-2

Rulemaking proposed language (WAC 173-415) 11/07/18

This is the proposed rule language for WAC 173-415, Primary Aluminum Plants.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-415-11-07-1

Rulemaking proposed language (WAC 173-443) 06/16/20

This is the proposed rule language for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-443-06-16-2

Rulemaking proposed language (WAC 173-455) 06/20/18

This is the proposed rule language for WAC 173-455, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-455-06-20-1

Rulemaking proposed language (WAC 173-424) 07-18-22

This is proposed rule language for Chapter 173-424 WAC, Clean Fuels Program Rule.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-424-07-18-22

Rulemaking proposed language (WAC 173-455) 07-18-22

This is proposed rule language for Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-455-07-18-22

Rulemaking proposed language (WAC 173-408) 10-30-23

This is proposed rule language for Chapter 173-408 WAC, Landfill Methane Emissions.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-408-10-30-23

Rulemaking proposed language (WAC 173-400) 9-18-24

This is the proposed rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-400-9-18-24

Rulemaking proposed language (WAC 173-401) 9-18-24

This is the proposed rule language for Chapter 173-401 WAC, Operating Permit Regulation.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-401-9-18-24