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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Draft Rule Language (WAC 173-407) 04/11/17

This is draft rule language used for the informal comment period from Apr 13 to May 12 2017 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/draft-rule-language-wac-173-407-20170411

Draft rule language (WAC 173-441) 07/22/21

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

https://ecology.wa.gov/draft-rule-language-wac-173-441-07-22-21

Draft rule language (WAC 173-408) 6-8-23

This is the June 8, 2023 draft rule language for Chapter 173-408 WAC, Landfill Methane Emissions.

https://ecology.wa.gov/draft-rule-language-wac-173-408-6-8-23

Draft Rule Language (WAC 173-407) 05/26/17

This is draft rule language used for informal comment period from May 26 to June 16, 2017 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/draft-rule-language-wac-173-407-20170526

Draft Rule Language (WAC 173-407) 07/17/17

This is draft rule language used for informal comment period from July 17 to July 28, 2017 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/draft-rule-language-wac-173-407-20170717

Draft rule language (WAC 173-408) 5-3-23

This is the May 3, 2023 draft rule language for Chapter 173-408 WAC, Landfill Methane Emissions.

https://ecology.wa.gov/draft-rule-language-wac-173-408-5-3-23

Draft rule language (WAC 173-408) 4-5-23

This is the April 5, 2023 draft rule language for Chapter 173-408 WAC, Landfill Methane Emissions.

https://ecology.wa.gov/draft-rule-language-wac-173-408-4-5-23

Draft rule language (WAC 173-423; WAC 173-400) 04/19/22

This is the April 19, 2022 draft rule language for Chapter 173-423 WAC, Clean Vehicles Program and Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/draft-rule-language-wac-173-423-04-19-22

Draft rule language (WAC 173-423; WAC 173-400) 6-14-22

This is the June 14, 2022 draft rule language for Chapter 173-423 WAC, Clean Vehicles Program and Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/draft-rule-language-wac-173-423;-wac-173-400-6-14

Draft rule language (WAC 173-443) 01/28/20

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

https://ecology.wa.gov/draft-rule-language-wac-173-443-01-28-20

Draft rule language (WAC 173-443) 1-25-23

This is the January 25, 2023 draft rule language for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/draft-rule-language-wac-173-443-1-25-23

Draft rule language (WAC 173-443) 11-17-22

This is the November 17, 2022 draft rule language for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/draft-rule-language-wac-173-443-11-17-22

Draft rule language (WAC 173-443) 05/10/22

This is the May 10, 2022 draft rule language for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/draft-rule-language-wac-173-443-05-10-22

Draft rule language (WAC 173-443) 03/31/22

This is the March 31, 2022 draft rule language for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/draft-rule-language-wac-173-443-03-31-22

Draft rule language (WAC 173-443) 02/03/22

This is the February 3, 2022 draft rule language for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/draft-rule-language-wac-173-443-02-03-22

Draft rule language (WAC 173-424) 04/13/22

This is the April 13, 2022 draft rule language for Chapter 173-424 WAC, Clean Fuels Program Rule.

https://ecology.wa.gov/draft-rule-language-wac-173-424-04-13-22

Draft rule language (WAC 173-424) 03/15/22

This is the March 15, 2022 draft rule language for Chapter 173-424 WAC, Clean Fuels Program Rule.

https://ecology.wa.gov/draft-rule-language-wac-173-424-03-15-22

Draft rule language (WAC 173-424) 01/27/22

This is the January 27, 2022 draft rule language for Chapter 173-424 WAC, Clean Fuels Program Rule.

https://ecology.wa.gov/draft-rule-language-wac-173-424-01-27-22

Draft rule language (WAC 173-424) 11/16/21

This is the November 16, 2021 draft rule language for Chapter 173-424 WAC, Clean Fuels Program Rule.

https://ecology.wa.gov/draft-rule-language-wac-173-424-11-16-21

Draft rule language (WAC 173-424) 11-26-24

“November 2024 CFS Draft Rule Language” contains the full draft rule language text

https://ecology.wa.gov/draft-rule-language-wac-173-424-11-26-24