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.
Inslee statement on Clean Air Rule decision
Statement by Gov. Jay Inslee on 1-16-20 related to the Supreme Court ruling on the Clean Air Rule.
https://ecology.wa.gov/inslee-statement-on-clean-air-rule-decision
VW state settlement allocations
A pie chart showing how the VW state settlement funds are being used.
https://ecology.wa.gov/20200408-vwallocationscircle-alt
NOx reductions alt text document
Arrow showing past & current NOx reductions in comparison to our goal and future reductions using VW settlement funds
https://ecology.wa.gov/20200407-noxreductionsarrow-alt
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
Chapter 173-442 WAC – Clean Air Rule
This is the rulemaking page to repeal Chapter 173-442 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-442
Chapters 173-443 and 173-455 WAC – Hydrofluorocarbons (HFCs)
This is the rulemaking page for Chapters 173-443 and 173-455 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-443-455
Chapter 173-443 WAC – Hydrofluorocarbons (HFCs)
On Dec. 10, 2020, Ecology adopted a new rule, Chapter 173-443 WAC, Hydrofluorocarbons.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-443
Chapter 173-444 WAC – Clean Energy Transformation Rule
This is the rulemaking page for Chapter 173-444 WAC, Clean Energy Transformation Rule.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-444
Chapter 173-446B WAC – Climate Commitment Act Funds Reporting
This is the rulemaking page for Chapter 173-446B WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-446b
Electric Fire Truck Grant FAQs
FAQ for electric firetruck grants
https://ecology.wa.gov/electricfiretruckgrantfaq
Focus on: Climate change and health equity
A joint Ecology and Health focus sheet exploring the health and community impacts of climate change.
https://ecology.wa.gov/201210-climate-justice-focus-sheet
Publication: Hydrofluorocarbons Adopted Rule Language – Informational Guidebook
This guidebook is supplemental and is intended to provide general information to stakeholders about the Chapter 173-443 WAC Hydrofluorocarbons (HFCs) and Other Fluorinated Greenhouse Gases rule language and how it may affect them.
https://ecology.wa.gov/publication-hydrofluorocarbons-adopted-rule-language-informational-guidebook
CCA Funds Reporting Rulemaking Public Hearing I
Presentation deck for the June 5th and 13th CCA funds reporting rulemaking public hearings
https://ecology.wa.gov/presentation-wac-173-446b-6-5-24
Listening Session: Liquid Fuels and Mass Balance Accounting
.pdf presentation for June 12, 2024 listening session on liquid fuels and mass balance accounting
https://ecology.wa.gov/presentation-wac-173-424-6-12-24
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
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
Cap-and-Invest Linkage Rulemaking Public Meeting
.pdf of July 10 public meeting presentation
https://ecology.wa.gov/presentation-wac-173-441-446-7-10-24
Adopted rule language (WAC 173-446B)
Adopted rule language WAC 173-446B
https://ecology.wa.gov/adopted-rule-language-wac-173-446b-10-08-24
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