Search Results - Washington State Department of Ecology

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 173-337 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

Chapter 173-333 WAC

This is the rulemaking page for Chapter 173-333 WAC, Chemical Action Plans.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-333-oct15

Chapter 173-350 WAC

On August 01, 2018 the Department of Ecology adopted amendments to Chapter 173-350 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-350-nov13

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

WAC 173-55: Accreditation of Cannabis Laboratories

This is the rulemaking page for Chapter 173-55 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-55

Chapter 173-167 WAC Emergency Drought Funding (2021)

This is the emergency rulemaking page for Chapter 173-167 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2021

Chapter 173-167 WAC Emergency Drought Funding (2024)

This is the rulemaking page for Chapter 173-167 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2024-28119efcad412da8f533ebdc1470dba2

Chapter 173-448 WAC – Air Quality in Overburdened Communities

This is the rulemaking page for Chapter 173-448 WAC, Air Quality in Overburdened Communities.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-448

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 173-925 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 173-360A 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

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

Public meeting: Report to Legislature on no-cost allowance allocation

Public Event: Aug. 6, 2025, 10 a.m., in Online webinar
Attend our public meeting about emission-intensive, trade-exposed industries (EITEs) and allowance allocation from 2035-2050.

https://ecology.wa.gov/events/cpr/eite-report-to-leg/eite-report-to-legislature-public-meeting

Chapter 173-228 WAC

On April 9, 2018, Ecology adopted a new rule, Chapter 173-228 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-228-jul17

Chapter 173-224 WAC-Water Quality Permit Fees

This is the rulemaking page for chapter 173-224 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-224

Chapter 197-11 WAC (SEPA rules – expedited rulemaking)

This is the Rulemaking page for Chapter 197-11 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-197-11-sepa-rules

Chapter 173-135 WAC – Pasco Basin Groundwater Subarea

This is the rulemaking page for Chapter 173-135 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-135

Chapter 173-201A WAC (Natural Conditions)

This is the rulemaking page for Chapter 173-201A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-201a-natural-conditions

July Local Government Sounding Board

Public Event: July 21, 2025, 1 p.m., in online webinar

https://ecology.wa.gov/events/rulemaking/173-26-and-173-27-wac-shoreline-management-act/julylgsb

October Local Government Sounding Board

Public Event: Oct. 20, 2025, 1 p.m., in Online webinar

https://ecology.wa.gov/events/rulemaking/173-26-and-173-27-wac-shoreline-management-act/octlgsb

November Local Government Sounding Board

Public Event: Nov. 17, 2025, 1 p.m., in Online webinar

https://ecology.wa.gov/events/rulemaking/173-26-and-173-27-wac-shoreline-management-act/novlgsb

Chapter 363-116 WAC, Pilotage Rules, Board of Pilotage Commissioners

Comment Period: June 11, 2025, 12 a.m. - Aug. 1, 2025, 11:59 p.m.
We invite you to share your thoughts and feedback on the proposed rule language and supporting materials for the Board of Pilotage Commissioners (BPC) tug escort rulemaking.

https://ecology.wa.gov/events/spills/ao22-13-chapter-363-116-wac/ao22-13-comment-period-80e3f6e228a90518d0a567319556b1db

Public listening session

Public Event: June 25, 2025, 1:30 p.m., in online webinar
This is an opportunity for you to hear about the preliminary draft for the rulemaking and provide informal feedback to us.

https://ecology.wa.gov/events/rulemaking/173-26-and-173-27-wac-shoreline-management-act/public-listening-session

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 173-187 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 (Aquatic Life Toxics Criteria)

This is the rulemaking page for Chapter 173-201A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-201a-aquatic-life-toxics-criteria

Chapter 173-201A WAC (Salmon Spawning Habitat)

This is the rulemaking page for Chapter 173-201A WAC for salmon spawning habitat.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-201a-salmon-spawning-habitat

Chapter 173-201A WAC (Human Health Criteria)

This is the rulemaking page for Chapter 173-201A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-201a-hhc

Chapter 173-224 WAC – Water Quality Permit Fees

This is the rulemaking page for Chapter 173-224 WAC

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-224

Monthly committee meeting

Public Event: July 9, 2025, 9 a.m., in Lacey, WA and Online webinar
The Washington Natural Resource Damage Assessment (RDA) Committee meets monthly to determine the most appropriate method for assessing environmental injury from oil spills into state waters.

https://ecology.wa.gov/events/spills/natural-resource-damage-assessment-committee/july-2025

Monthly committee meeting

Public Event: Aug. 13, 2025, 9 a.m., in Lacey, WA and Online webinar
The Washington Natural Resource Damage Assessment (RDA) Committee meets monthly to determine the most appropriate method for assessing environmental injury from oil spills into state waters.

https://ecology.wa.gov/events/spills/natural-resource-damage-assessment-committee/august-2025

Monthly committee meeting

Public Event: Sept. 10, 2025, 9 a.m., in Lacey, WA and Online webinar
The Washington Natural Resource Damage Assessment (RDA) Committee meets monthly to determine the most appropriate method for assessing environmental injury from oil spills into state waters.

https://ecology.wa.gov/events/spills/natural-resource-damage-assessment-committee/september-2025

Monthly committee meeting

Public Event: Oct. 8, 2025, 9 a.m., in Lacey, WA and Online webinar
The Washington Natural Resource Damage Assessment (RDA) Committee meets monthly to determine the most appropriate method for assessing environmental injury from oil spills into state waters.

https://ecology.wa.gov/events/spills/natural-resource-damage-assessment-committee/october-2025

Monthly committee meeting

Public Event: Nov. 12, 2025, 9 a.m., in Lacey, WA and Online webinar
The Washington Natural Resource Damage Assessment (RDA) Committee meets monthly to determine the most appropriate method for assessing environmental injury from oil spills into state waters.

https://ecology.wa.gov/events/spills/natural-resource-damage-assessment-committee/november-2025

Monthly committee meeting

Public Event: Dec. 10, 2025, 9 a.m., in Lacey, WA and Online webinar
The Washington Natural Resource Damage Assessment (RDA) Committee meets monthly to determine the most appropriate method for assessing environmental injury from oil spills into state waters.

https://ecology.wa.gov/events/spills/natural-resource-damage-assessment-committee/december-2025

Draft 2025 Air Quality Monitoring Network Plan

Comment Period: May 19, 2025, 12 a.m. - June 18, 2025, 11:59 p.m.
Comment on the draft 2025 Air Quality Monitoring Network Plan.

https://ecology.wa.gov/events/aq/air-monitoring-network/monitoring-network-plan-comment-ends-6-18-25

Cap-and-Invest: Comment on EITE allowance allocation

Comment Period: May 5, 2025, 1:31 p.m. - Sept. 3, 2025, 12:01 a.m.
Provide comment on Ecology’s report to the Legislature on how no-cost allowances are allocated to Emission-Intensive Trade-Exposed Industries (EITEs) from 2035-2050.

https://ecology.wa.gov/events/cpr/eite-report-to-leg/eite-leg-report

Advantage Dirt Contractors, Wenatchee

Comment Period: June 4, 2025, 12 a.m. - June 20, 2025, 11:59 p.m.
We propose to cancel (rescind) Advantage Dirt Contractors' coverage under an air quality general order for rock crushers. We will hold a public comment period if one is requested.

https://ecology.wa.gov/events/aq/general-orders/advantage-dirt-contractors-comment-ends-6-20-25

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 173-441 & 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 173-201A WAC (revisions)

On Dec. 30, 2019, Ecology adopted amendments to Chapter 173-201A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-201a-revisions

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

Chapters 173-507, 173-508, 173-513,173-514 and 173-515 WAC – Watershed Restoration Plan Rulemaking

This is the rulemaking page for Chapters 173-507, 173-508, 173-513, 173-514 and 173-515 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-507-508-513-514-515-watershed-restoration

Chapter 173-337 WAC – Safer Products Restrictions and Reporting

This is the rulemaking page for Chapter 173-337 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-337-may2023

Chapter 173-455 WAC – Air Quality Fee Rule

This is the rulemaking page for Chapter 173-455 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-455

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

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

Safer Products for Washington Cycle 1.5 PFAS Rulemaking

Public Event: July 9, 2025, 5:30 p.m., in Online only
We invite you to attend the online public hearing for the Safer Products for Washington Cycle 1.5 PFAS Rulemaking and provide verbal testimony.

https://ecology.wa.gov/events/hwtr/spwa-cycle-1-5/july-9-hearing

Safer Products for Washington Cycle 1.5 PFAS Rulemaking

Public Event: July 10, 2025, 10 a.m., in Online only
We invite you to attend the online public hearing for the Safer Products for Washington Cycle 1.5 PFAS Rulemaking and provide verbal testimony.

https://ecology.wa.gov/events/hwtr/spwa-cycle-1-5/july-10-hearing