Regulations & Permits

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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) 03/31/17

This is draft rule language used in the stakeholder meeting 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-173-407-20170331

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 173-408) 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 173-400) 11/29/17

This is draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (11/29/17)

https://ecology.wa.gov/draft-rule-language-wac-173-400-11-29-17

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 173-400) 10/10/18

This is draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (10/10/18)

https://ecology.wa.gov/sru-alternative-emission-standard10_10_18_

Draft rule language (WAC 173-400) 12/04/18

This is draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (12/4/18)

https://ecology.wa.gov/draft-rule-language-wac-173-400-12-04-18

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 173-400) 01/24/19

This is draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (1/24/19)

https://ecology.wa.gov/draft-rule-language-for-wac-173-400-wac-173-400

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 173-400) 3-18-24

This is the March 18, 2024 draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/draft-rule-language-wac-173-400-3-18-24

Draft rule language (WAC 173-401) 3-18-24

This is the March 18, 2024 draft rule language for Chapter 173-401 WAC, Operating Permit Regulations.

https://ecology.wa.gov/draft-rule-language-wac-173-401-3-18-24

Draft rule language (tracked) (173-424)

Summary of proposed changes to WAC 173-424

https://ecology.wa.gov/draft-rule-language-tracked-173-424

Draft rule language WAC 173-337

This is the draft rule language for WAC 173-337.

https://ecology.wa.gov/draft-rule-language-wac-173-337