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 Adoption Notice (WAC 173-187) 6/14/24

This is a rulemaking adoption (CR-103) for WAC 173-187 Financial Responsibility

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-187-6-14-24

Rulemaking Announcement (WAC 173-400; WAC 173-401) 01-18-24

This is a rulemaking announcement (CR-101) for WAC 173-400, General Regulations for Air Pollution Sources and WAC 173-401, Operating Permit Regulation.

https://ecology.wa.gov/rulemaking-announcement-wac-173-400;-wac-173-401-01-18-24

Agenda (WAC 173-400; WAC 173-401) 4-18-24

This is the agenda for the April 18, 2024 stakeholder meeting for Chapter 173-440 WAC, General Regulations for Air Pollution Sources and Chapter 173-401 WAC, Operating Permit Regulation.

https://ecology.wa.gov/agenda-wac-173-400;-wac-173-401-4-18-24

Draft Source Test Manual (WAC 173-400; WAC 173-401) 4-9-24

This is the April 9, 2024 draft of the air quality Source Test Manual.

https://ecology.wa.gov/draft-source-test-manual-wac-173-400;-wac-173-401-4-9-24

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

Presentation (WAC 173-400; WAC 173-401) 5-15-24

This is a presentation for the May 15, 2024 stakeholder meeting for Chapter 173-400 WAC, General Regulations for Air Pollution Sources and Chapter 173-401 WAC, Operating Permit Regulation.

https://ecology.wa.gov/presentation-wac-173-400;-wac-173-401-5-15-24

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

Rulemaking Announcement (Tug Escort Rulemaking - Chapter 363-116 WAC) 02/22/23

This is a rulemaking announcement (CR-101) for Tug Escort Rulemaking (Chapter 363-116 WAC)

https://ecology.wa.gov/rulemaking-announcement-tug-escort-rulemaking-chap

Webinar #1 Slides

Slides for Webinar #1

https://ecology.wa.gov/webinar-1-slides

Webinar #2 Slides

Slides for Webinar #2

https://ecology.wa.gov/webinar-2-slides

EIS Scoping Presentation Slides

Slides from the EIS Scoping Presentation

https://ecology.wa.gov/eis-scoping-presentation-slides

Workshop #1 Slides

Slides for Workshop #1

https://ecology.wa.gov/workshop-1-slides

Workshop #1 Slides_May 24, 2024

Workshop #1 Slides for May 24, 2024

https://ecology.wa.gov/workshop-1-slides_may-24-2024

Workshop #2 Slides

Slides for Workshop #2

https://ecology.wa.gov/workshop-2-slides

Meeting #2 Slides

Slides for Meeting #2

https://ecology.wa.gov/meeting-2-slides

Workshop #3 Slides

Slides for Workshop #3

https://ecology.wa.gov/workshop-3-slides

Meeting #3 Slides

Slides for Meeting #3

https://ecology.wa.gov/meeting-3-slides

Workshop #4 Slides

Slides for Workshop #4

https://ecology.wa.gov/workshop-4-slides

Workshop #4 Slides_Dec. 7, 2024

Slides for Workshop #4 on Dec. 7, 2024

https://ecology.wa.gov/workshop-4-slides_dec-7-2024