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 Proposal (WAC 173-423) 11/07/18

This is a rulemaking proposal (CR-102 form) for WAC 173-423, Low Emission Vehicles.

https://ecology.wa.gov/rulemaking-proposal-wac-173-423-11-07-18

Rulemaking Proposal (WAC 173-423; WAC 173-400) 06/22/21

This is a rulemaking proposal (CR-102) for Chapter 173-423 WAC, Low Emission Vehicles; Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposal-wac-173-423;-wac-173-400-06

Rulemaking Proposal (WAC 173-430) 12/04/18

This is a rulemaking proposal (CR-102 form) for WAC 173-430, Agricultural Burning.

https://ecology.wa.gov/rulemaking-proposal-wac-173-430-12-04-18

Rulemaking Proposal (WAC 173-446A) 12/22/21

This is a rulemaking proposal (CR-102) for Chapter 173-446A WAC, Criteria for Emissions-Intensive, Trade-Exposed Industries.

https://ecology.wa.gov/rulemaking-proposal-wac-173-446a-12-22-21

Rulemaking Proposal (WAC 173-441) 10/06/21

This is a rulemaking proposal (CR-102) for Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases.

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

Rulemaking proposal (WAC 173-442; WAC 173-441) 05/31/16

This is a rulemaking proposal (CR-102) 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-173-1

Rulemaking Proposal (WAC 173-455) 09-07-22

This is a rulemaking proposal (CR-102) for Chapter 173-455 WAC, Air Quality Fee Rule.

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

Rulemaking Proposal (WAC 173-423; WAC 173-400) 9-7-22

This is a rulemaking proposal (CR-102) for Chapter 173-423 WAC, Clean Vehicles Program; Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposal-wac-173-423;-wac-173-400-9-7-2

Rulemaking Proposal (WAC 173-444) 09/02/20

This is a rulemaking proposal (CR-102) for Chapter 173-444 WAC, Chapter 173-444 WAC, Clean Energy Transformation Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-444-09-02-20

Rulemaking Proposal (WAC 173-446) 5-16-22

This is a rulemaking proposal (CR-102) for Chapter 173-446 WAC, Climate Commitment Act Program.

https://ecology.wa.gov/rulemaking-proposal-wac-173-446-5-16-22

Rulemaking Proposal (WAC 173-443) 06/16/20

This is a rulemaking proposal (CR-102) for Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/rulemaking-proposal-wac-173-443-06-16-20

Rulemaking Proposal (WAC 173-455; WAC 173-400) 06/20/18

This is a rulemaking proposal (CR-102 form) for WAC 173-455, Air Quality Fee Rule; WAC 173-400, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/rulemaking-proposal-wac-173-455;-wac-173-400-06

Rulemaking Proposal (WAC 173-460) 06/04/19

This is a rulemaking proposal (CR-102) for Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/rulemaking-proposal-wac-173-460-06-04-19

Rulemaking Proposal (WAC 173-424; WAC 173-455) 07-18-22

This is a rulemaking proposal (CR-102) for Chapter 173-424 WAC, Clean Fuels Program Rule; Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-424;-wac-173-455-07-18

Rulemaking Proposal (WAC 173-443; WAC 173-455) 7-13-23

This is a rulemaking proposal (CR-102) for Chapter 173-443 WAC, Hydrofluorocarbons (HFCs) and Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-443;-wac-173-455-7-13-23

Rulemaking Proposal (WAC 173-443; WAC 173-455) 8-31-23

This is a rulemaking continuance (CR-102) for Chapter 173-443 WAC, Hydrofluorocarbons (HFCs) and Chapter 173-455 WAC, Air Quality Fee Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-443;-wac-173-455-8-31-23

Rulemaking Proposal (WAC 173-446) 9-7-23

This is a rulemaking proposal (CR-102) for Chapter 173-446 WAC, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-proposal-wac-173-446-9-7-23

Rulemaking Proposal (WAC 173-446B) 4-23-24

This is a rulemaking proposal (CR-102) for Chapter 173-446B WAC, Climate Commitment Act Funds Reporting.

https://ecology.wa.gov/rulemaking-proposal-wac-173-446b-4-23-24

Proposal Notice - CR 102 form

CR 102 for WAC 173-441, 446

https://ecology.wa.gov/rulemaking-proposal-wac-173-441;-wac-173-446-6-27-24

Proposal Notice - CR 102 form

CR 102 for WAC 173-446

https://ecology.wa.gov/rulemaking-proposal-wac-173-446-2-12-25