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) 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 173-400) 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 173-400) 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 173-400) 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 (173-446B WAC) 11-13-23

This is draft rule language for Chapter 173-446B WAC, the Climate Commitment Act Funds Reporting Rulemaking.

https://ecology.wa.gov/draft-language-chapter-173-446b-wac

Draft rule changes (not tracked) to 173-446 WAC for Electricity Markets rulemaking (1/23/24)

This document lists the third informal draft rule language changes (not tracked) to Chapter 173-446 WAC (Climate Commitment Act Program) for the Electricity Markets rulemaking.

https://ecology.wa.gov/informal-draft-rule-changes-to-173-446-wac-for-electricity-markets-rulemaking-1-22-24

Draft rule changes (tracked) to 173-441 WAC for Electricity Markets rulemaking (1/23/24)

This document lists the third informal draft rule language changes (tracked) to Chapter 173-441 WAC (Reporting of Emissions of Greenhouse Gases) for the Electricity Markets rulemaking.

https://ecology.wa.gov/draft-rule-changes-tracked-to-173-441-wac-for-electricity-markets-rulemaking-1-23-24

Draft rule changes (tracked) to 173-446 WAC for Electricity Markets rulemaking (1/23/24)

This document lists the third informal draft rule language changes (tracked) to Chapter 173-446 WAC (Climate Commitment Act Program) for the Electricity Markets rulemaking.

https://ecology.wa.gov/draft-rule-changes-tracked-to-173-446-wac-for-electricity-markets-rulemaking-1-23-24

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 proposed rules changes to 173-441 WAC

.pdf of draft rule changes for WAC 173-441

https://ecology.wa.gov/draft-rule-language-173-441-wac-7-1-24

Draft proposed rules changes to 173-446 WAC

.pdf of draft rule changes for WAC 173-446

https://ecology.wa.gov/draft-rule-language-173-441-wac-7-1-26

CFS Draft Rule - Changes Summary

Summary of proposed changes to WAC 173-424

https://ecology.wa.gov/draft-rule-changes-summary-wac-173-424-8-30-24

Draft rule language (173-424-800 - 173-424-850)

Summary of proposed changes to WAC 173-424-800

https://ecology.wa.gov/draft-rule-language-173-424-800-173-424-850

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

Draft rule language (tracked) (173-446)

draft rule language for WAC 173-446, offsets protocols

https://ecology.wa.gov/draft-rule-language-173-446-wac-10-1-24

Draft rule changes summary-updated (WAC 173-424) 12-4-2024

“Rule Changes Summary” is a summary table of the changes we made since our initial draft in August.

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

Draft proposed rules changes to 173-443 WAC

draft rule language for WAC 173-443, hydrofluorocarbons

https://ecology.wa.gov/draft-rule-changes-summary-wac-173-443-1-16-25