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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Rulemaking Announcement (WAC 173-446B) 5-25-23

This is a rulemaking announcement (CR-101) for WAC 173-446B, Climate Commitment Act Funds Reporting.

https://ecology.wa.gov/rulemaking-announcement-wac-173-446b-5-11-23

Rulemaking Announcement (WAC 173-446) 6-8-23

This is a rulemaking announcement (CR-101) for WAC 173-446, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-446-6-8-23

Rulemaking announcement (WAC 173-430) 06/20/18

This is the rulemaking announcement (CR-101) for WAC 173-430, Agricultural Burning.

https://ecology.wa.gov/rulemaking-announcement-wac-173-430-05-20-18

Rulemaking Announcement (WAC 173-446A) 08/04/21

This is a rulemaking announcement (CR-101) for Chapter 173-446A WAC, Criteria for Emissions-Intensive, Trade-Exposed Industries.

https://ecology.wa.gov/rulemaking-announcement-wac-173-446a-08-04-21

Rulemaking Announcement (WAC 173-441) 07/07/21

This is a rulemaking announcement (CR-101) for Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/rulemaking-announcement-wac-173-441-07-07-21

Rulemaking Announcement (WAC 173-442; WAC 173-441) 09/21/15

This is a rulemaking announcement for WAC 173-442 Clean Air Rule; WAC 173-441 Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/rulemaking-announcement-wac-173-442;-wac-173-441

Rulemaking Announcement (WAC 173-423; WAC 173-400) 01/18/22

This is a rulemaking announcement (CR-101) for WAC 173-423, Clean Vehicles Program and WAC 173-400, General Air Quality Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-announcement-wac-173-423;-wac-173-400-0

Rulemaking Announcement (WAC 173-443) 07/30/19

This is a rulemaking announcement (CR-101) for WAC 173-443, Hydrofluorocarbons (HFCs).

https://ecology.wa.gov/rulemaking-announcement-wac-173-443-07-30-19

Rulemaking Announcement (WAC 173-444) 10/18/19

This is a rulemaking announcement (CR-101) for WAC 173-444, Clean Energy Transformation Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-444-10-18-19

Rulemaking Announcement (WAC 173-446) 08/04/21

This is a rulemaking announcement (CR-101) for Chapter 173-446 WAC, Climate Commitment Act Program.

https://ecology.wa.gov/rulemaking-announcement-wac-173-446-08-04-21

Rulemaking Announcement (WAC 173-443; WAC 173-455) 08/16/21

This is a rulemaking announcement (CR-101) for WAC 173-443, Hydrofluorocarbons (HFCs); WAC 173-455, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-443-wac-173-455

Rulemaking Announcement (WAC 173-424; WAC 173-455) 07/20/21

This is a rulemaking announcement (CR-101) for Chapter 173-424 WAC, Clean Fuels Program Rule; Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-424;-wac-173-455

Rulemaking Announcement (WAC 173-441; WAC 173-446) 6-26-23

This is a rulemaking announcement (CR-101) for WAC 173-441, Reporting of Emissions of Greenhouse Gases and WAC 173-446, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-441;-wac-173-446-6-26-23

Rulemaking Announcement (WAC 173-446) 9-12-23

This is a rulemaking announcement (CR-101) for WAC 173-446, Climate Commitment Act Program Rule, cap-and-invest offsets.

https://ecology.wa.gov/rulemaking-announcement-wac-173-446-9-12-23

Rulemaking Announcement (WAC 173-424) 12-18-23

This is a rulemaking announcement (CR-101) for WAC 173-424, Clean Fuels Program Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-424-12-18-23

Rulemaking Announcement (WAC 173-441-446) 04-11-24

This is a rulemaking announcement (CR-101) for WAC 173-441-446, Cap-and-invest Linkage.

https://ecology.wa.gov/rulemaking-announcement-wac-173-441-446-04-11-24

Rulemaking Announcement (WAC 173-443) 10-2-24

CR 101 for WAC 173-443

https://ecology.wa.gov/rulemaking-announcement-wac-173-443-10-2-24

Rulemaking Announcement (WAC 173-448) 10-10-24

This is a rulemaking announcement (CR-101) for WAC 173-448, Air Quality in Overburdened Communities.

https://ecology.wa.gov/rulemaking-announcement-wac-173-448-10-10-24

Rulemaking Announcement (WAC 173-423) 11-20-24

CR 101 for WAC 173-423

https://ecology.wa.gov/rulemaking-announcement-wac-173-423-11-20-24

Rulemaking Announcement (WAC 173-425-430-400) 2-6-25

This is a rulemaking announcement (CR-101) for Chapters 173-425 (outdoor burning), 173-430 (agricultural burning), and 173-400 (general regulation for air pollution sources).

https://ecology.wa.gov/rulemaking-announcement-wac-173-425-430-400-2-6-25