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Chapter 173-217 WAC – State Waters Alteration Permit
This is the rulemaking page for Chapter 173-217 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-217
Chapter 173-446 WAC – Cap-and-Invest Offsets - US Forest Protocol
This is the rulemaking page for Chapter 173-446 WAC – Cap-and-Invest Offsets - US Forest Protocol
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-446-offsets-us-forest-protocol
Chapter 173-360A WAC
This is the rulemaking page for Chapter 173-360A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-360a
WAC 173-50: Accreditation of Environmental Laboratories
This is the rulemaking page for Chapter 173-50 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-50
Chapter 173-187 WAC
This is the rulemaking page for 173-187 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-187
Chapter 173-201A WAC (Chelan UAA)
This is the rulemaking page for Chapter 173-201A WAC (Chelan UAA)
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-201a-chelan-uaa
Chapter 173-340 WAC
This is the rulemaking page for Chapter 173-340 WAC, Model Toxics Control Act Cleanup Regulations.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-340
Chapter 173-408 WAC – Landfill Methane Emissions
This is the rulemaking page for Chapter 173-408 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-408
Chapter 173-423 WAC<br>and WAC 173-400-025 – Low Emission Vehicles
This is the rulemaking page for Chapter 173-423 WAC and Chapter 173-400 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-423-400
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 173-445 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
Chapters 173-400 and 173-401 WAC, General Regulations for Air Pollution Sources
This is the rulemaking page for Chapters 173-400 and 173-401 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-400-401-air-pollution-sources
Chapters 173-425, 173-430, and 173-400 WAC, Flame Cap Kilns and Air Curtain Incinerators
This is the rulemaking page for Chapters 173-425, 173-430, and 173-400 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-425-430-400
Chapter 173-350 WAC - Organics Management
Chapter 173-350 WAC - Organics Management
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-350
Chapter 173-910 WAC - Mercury Lights Stewardship
Chapter 173-910 WAC - Mercury Lights Stewardship
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-910
Grant Applicant Workshop
Public Event: Nov. 4, 2025, 10 a.m., in Online webinar
If your organization is working to improve streamflow and aquatic resources in your watershed, you may qualify for our competitive grants.
If your organization is working to improve streamflow and aquatic resources in your watershed, you may qualify for our competitive grants.
https://ecology.wa.gov/events/wr/sfr-grants-25-26/november-virtual
Clean Earth Washougal public comment period
Comment Period: Oct. 6, 2025, 12 a.m. - Dec. 6, 2025, 11:59 p.m.
We invite you to review and comment on cleanup documents for contamination cleanup at Clean Earth Washougal located at 625 S. 32nd Street in Washougal, Washington.
We invite you to review and comment on cleanup documents for contamination cleanup at Clean Earth Washougal located at 625 S. 32nd Street in Washougal, Washington.
https://ecology.wa.gov/events/hwtr/clean-earth/washougal
DeBocks Main Street Texaco
Comment Period: Oct. 10, 2025, 12 a.m. - Nov. 10, 2025, 11:59 p.m.
You are invited to review and comment on the plan to investigate contamination at this site.
You are invited to review and comment on the plan to investigate contamination at this site.
https://ecology.wa.gov/events/tcp/sitecommentperiod/debocks-main-street-texaco-aa822d3b81d8de06abc542860fba2c76
Eastside Fire & Rescue headquarters property cleanup site
Comment Period: Oct. 20, 2025, 12 a.m. - Dec. 22, 2025, 11:59 p.m.
You are invited to review and comment on an Interim Action Work Plan and State Environmental Policy Act (SEPA) Determination of Nonsignificance.
You are invited to review and comment on an Interim Action Work Plan and State Environmental Policy Act (SEPA) Determination of Nonsignificance.
https://ecology.wa.gov/events/tcp/efr-hq-ives/efr-hq-ives
Organics management rulemaking
Public Event: Nov. 5, 2025, 12 p.m., in Online webinar
We invite you our Environmental Justice listening session about organics management rulemaking.
We invite you our Environmental Justice listening session about organics management rulemaking.
https://ecology.wa.gov/events/swm/organics-rulemaking/organics-rulemaking-ej-listening-session
Draft guidance chapters
Comment Period: May 1, 2025, 12 a.m. - Nov. 21, 2025, 11:59 p.m.
We are accepting comments on the remaining draft guidance chapters.
We are accepting comments on the remaining draft guidance chapters.
https://ecology.wa.gov/events/wq/voluntary-clean-water-ag-guidance/voluntary-clean-water-guidance
Draft ORCA waiver documents
Public Event: Nov. 6, 2025, 1:30 p.m., in Online webinar
We invite you to join us for a webinar about the Organics Recycling Collection Areas (ORCA) waiver process.
We invite you to join us for a webinar about the Organics Recycling Collection Areas (ORCA) waiver process.
https://ecology.wa.gov/events/swm/organics-recycling-collection-areas-orca-waiver-process/informational-webinar
Draft ORCA waiver documents
Comment Period: Nov. 3, 2025, 12 a.m. - Nov. 30, 2025, 11:59 p.m.
We invite you to review and comment on the waiver documents for ORCA impacted jurisdictions to receive a waiver and extend their timeline for meeting the organics collection requirements.
We invite you to review and comment on the waiver documents for ORCA impacted jurisdictions to receive a waiver and extend their timeline for meeting the organics collection requirements.
https://ecology.wa.gov/events/swm/organics-recycling-collection-areas-orca-waiver-process/organics-recycling-collection-areas-orca-waiver-process-informal-comment-period
Chapters 173-424 and 173-455 WAC – Clean Fuels Program
This is the rulemaking page for Chapters 173-424 and 173-455 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-424-455
Chapter 173-424 WAC – Clean Fuels Program
This is the rulemaking page for Chapter 173-424 WAC – Clean Fuels Program
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-424
Chapter 173-185 WAC
This is the rulemaking page for chapter 173-185 WAC, Oil Movement by Rail and Pipeline Notification.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-185
Chapter 173-180 WAC and Chapter 173-184 WAC
This is the rulemaking page for Chapter 173-180 WAC and Chapter 173-184 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-180-173-184
Chapter 173-219 WAC
On January 23, 2018 the Department of Ecology adopted new rule, Chapter 173-219 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-219-jun14
Chapter 173-501 WAC
On May 27, 2020, Ecology adopted amendments to Chapter 173-501 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-501
Chapter 173-201A WAC (Outstanding Resource Waters)
This is the rulemaking page for Chapter 173-201A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-201a-outstanding-resource-waters
Chapter 173-446 WAC – Cap-and-Invest Offsets - Ozone Depleting Substance Protocol
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 173-905 WAC - Battery Stewardship Program
This is the rulemaking page for Chapter 173-905 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-905
Chapter 173-339 WAC – Cosmetic Products Restrictions (Formaldehyde in Cosmetics)
This is the rulemaking page for Chapter 173-339 WAC – Cosmetic Products Restrictions
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-339
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 173-26 and 173-27 WAC, Shoreline Management Act
This is the rulemaking page for Chapter 173-26 WAC, Chapter 173-27 WAC
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-26-27-shoreline-management-act
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 173-925 WAC
This is the rulemaking page for Chapter 173-925 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-925
Chapter 173-337 WAC: Safer Products Restrictions and Reporting (Cycle 1.5: PFAS)
This is the rulemaking page for Chapter 173-337 WAC
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-337-nov2023
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