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 173-423) 11-20-24

CR 101 for WAC 173-423

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

Chapter 173-441 and -446 WAC Linkage Rulemaking - Electricity Considerations

Slideshow presentation from the Cap-and-Invest linkage rulemaking public meeting (Nov. 19, 2024)

https://ecology.wa.gov/presentation-wac-173-441-446-11-19-24

Questions (WAC 173-441, 446) 11-19-24

Questions from participants of the Nov. 19, 2024, linkage rulemaking info session

https://ecology.wa.gov/questions-wac-173-441-446-11-19-24

Clean energy coordination

We provide information on how clean energy projects are sited, reviewed, and permitted.

https://ecology.wa.gov/regulations-permits/sepa/clean-energy

Chapter 173-446 WAC – Climate Commitment Act Program Rule

This is the rulemaking page for Chapter 173-446 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446

Chapter 173-446A WAC

This is the rulemaking page for Chapter 173-446A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446a

Chapter 173-446 WAC – Allowance Price Containment Reserve

This is the rulemaking page for Chapter 173-446 WAC, Allowance Price Containment Reserve.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446-apcr

Chapter 173-445 WAC – Greenhouse Gas Assessment for Projects

This is the rulemaking page for Chapter 173-443 WAC, Greenhouse Gas Assessment for Projects.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-445

Chapter 173-446 WAC – Cap-and-Invest Offsets

This is the rulemaking page for Chapter 173-446 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-446-offsets

Chapter 173-443 WAC Hydrofluorocarbons

This is the rulemaking page for Chapter 173-443 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-443-hydrofluorocarbons

Chapter 173-423 WAC – Clean Vehicles Program

This is the rulemaking page for Chapter 173-423 WAC

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-423

Chapter 173-441 and 173-446 WAC, Cap-and-Invest Linkage

This is the rulemaking page for Chapters 173-441 and 173-446.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-441-446-linkage

Millennium Bulk Terminals Longview

Millennium proposed a coal export terminal at the former Reynolds smelter in Cowlitz County.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology/millennium

Contanda expansion proposal

Contanda, formerly Westway Terminal, proposed an expansion of the Grays Harbor methanol terminal.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology/grays-harbor-terminal-expansion/contanda

Grays Harbor terminal expansion environmental reviews

The current status of environmental reviews for two oil-related proposals in Grays Harbor.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology/grays-harbor-terminal-expansion

Goldendale Energy Storage Project

Environmental review and permitting for the proposed Goldendale Energy Storage Project.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/goldendale-energy

WAC 173-166 Emergency drought relief

This is the rulemaking page for Chapter 173-166 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-166

Imperium expansion proposal

Imperium Terminal Services proposed expanding its existing transport facility in Hoquiam.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology/grays-harbor-terminal-expansion/imperium-expansion-proposal

How to Create a SAW Account for Source Management System (SMS)

These are instructions for how to create a SAW account, register for Air Quality Portal, and add Source Management System (SMS).

https://ecology.wa.gov/202007createsawsms

Source Management System (SMS) User Guide

These are instructions for using the Source Management System (SMS).

https://ecology.wa.gov/202007smsuserguide