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Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.

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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