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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Floodplains by Design 2023-2025 Grant Pre-Application

Pre-application form for Floodplains by Design project proposals for the 2023-2025 fiscal year.

https://ecology.wa.gov/floodplains-by-design-2023-2025-grant-pre-applicat

Composted materials by facility

This spreadsheet lists Washington's compost facilities and the types of materials they process.

https://ecology.wa.gov/composting-facilities-and-materials

Goldendale-Energy-Storage-Project-Draft-EIS-Open-House

Read the online open house for the Goldendale Energy Storage Project draft Environmental Impact Statement.

https://ecology.wa.gov/goldendale-energy-draft-eis-open-house

Second SEIS Kalama SEPA notice

The SEPA notice that Ecology will conduct a second Supplemental Environmental Impact Statement.

https://ecology.wa.gov/2019-nov22-2ndseiskalama-sepa-notice

Adopted emergency rule language (WAC 173-446) 6-8-23

This is the first emergency adopted rule language for WAC 173-446, Climate Commitment Act Program Rule.

https://ecology.wa.gov/adopted-emergency-rule-language-wac-173-446-6-8-23

Rulemaking Announcement (WAC 173-446) 6-8-23

This is a rulemaking announcement (CR-101) for WAC 173-446, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-announcement-wac-173-446-6-8-23

Notification letter Second SEIS

A letter notifying the applicants of Ecology's decision to conduct a second Supplemental Impact Statement for the proposed Kalama methanol facility.

https://ecology.wa.gov/2019-nov22-2ndseiskalamaletter

Cowlitz County's Nov. 4, 2019 response to Ecology's questions

Information provided to Ecology in response to the agency's questions on a Supplemental Environmental Impact Statement for the proposed Northwest Innovation Works Kalama methanol plant.

https://ecology.wa.gov/2019-october-cowlitzcountyresponsetoecyquestions

Rulemaking Emergency Adoption Notice (WAC 173-446) 6-8-23

This is the first emergency rulemaking adoption notice (CR-103E) for WAC 173-446, Climate Commitment Act Program Rule.

https://ecology.wa.gov/rulemaking-emergency-adoption-notice-wac-173-446-6

Columbia River Temperature TMDL Comment

Ecology's comment letter on EPA's Temperature TMDL for the Columbia and Snake Rivers

https://ecology.wa.gov/columbia-river-tmdl-comment

Vantage Data Center Health Impact Assessment (Second Tier Review) Recommendation, April 2022

This is the April 2022 Health Impact Assessment (Second Tier Review) Recommendation for Vantage Data Center.

https://ecology.wa.gov/202204vantagetier2rec

Cap and Invest Agency Request Legislation

A PowerPoint on Ecology's proposed agency request legislation for our Cap and Invest Program.

https://ecology.wa.gov/cap-and-invest-agency-request-legislation-ppt

Draft linkage bill

A bill request for facilitating linkage of Washington's carbon market with the California-Quebec marcket

https://ecology.wa.gov/draft-linkage-bill-z-0485-1

Chapter 173-441 & 173-446 WAC, Cap-and-Invest Program Updates and 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-cap-and-invest-program-updates-and-linkage

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 173-423 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

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

Programmatic environmental impact statements

Overview of broad environmental studies for clean energy projects.

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