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Webinar #2: Ripping the Stitch
Public Event: May 8, 2025, 10 a.m., in Online webinar
https://ecology.wa.gov/events/swm/textile-webinar-series/textile-webinar-may-8-2025
Webinar #3: Hemmed in to Cutting Loose
Public Event: May 13, 2025, 10 a.m., in Online webinar
https://ecology.wa.gov/events/swm/textile-webinar-series/textile-webinar-may-13-2025
Chapter 173-04 WAC
This is the rulemaking page for Chapter 173-04 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-04
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
Reserve Silica Reclamation
Public Event: May 7, 2025, 6 p.m., in Online webinar
https://ecology.wa.gov/events/swm/reserve-silica-reclamation-remedial-investigation/reserve-silica-reclamation-remedial-investigation-e7dbeb8ddeac653aa26cded6e007f707
Simplot Feeders Draft Permit
Comment Period: April 10, 2025, 12 a.m. - June 11, 2025, 11:59 p.m.
We invite your comments on draft State Waste Discharge permit ST0501324 being issued to Simplot Feeders Concentrated Animal Feeding Operation (CAFO) located in Walla Walla County.
We invite your comments on draft State Waste Discharge permit ST0501324 being issued to Simplot Feeders Concentrated Animal Feeding Operation (CAFO) located in Walla Walla County.
https://ecology.wa.gov/events/wq/simplot/simplot-feeders-public-notice
Hardel Mutual Plywood cleanup, Olympia
Comment Period: May 1, 2025, 8 a.m. - June 2, 2025, 11:59 p.m.
This site was previously cleaned up from 2007–2012. The site is re-entering the cleanup process after West Bay Development Group (West Bay) found more contamination in 2021.
This site was previously cleaned up from 2007–2012. The site is re-entering the cleanup process after West Bay Development Group (West Bay) found more contamination in 2021.
https://ecology.wa.gov/events/tcp/hardel-mutual-plywood/hardel-mutual-plywood-comment-period
Reserve Silica Reclamation
Comment Period: May 1, 2025, 12 a.m. - May 30, 2025, 11:59 p.m.
Reserve Silica Reclamation Remedial Investigation
Reserve Silica Reclamation Remedial Investigation
https://ecology.wa.gov/events/swm/reserve-silica-reclamation-remedial-investigation/reserve-silica-reclamation-remedial-investigation
Middle Columbia River – McNary Pool
Comment Period: May 5, 2025, 8 a.m. - June 5, 2025, 5 p.m.
We are updating the Middle Columbia River – McNary Pool Geographic Response Plan (GRP). An important part of the update process is hearing from the people who live, work, and play in the GRP area. To facilitate this, a public comment period will be open from May 5 to June 5, 2025.
We are updating the Middle Columbia River – McNary Pool Geographic Response Plan (GRP). An important part of the update process is hearing from the people who live, work, and play in the GRP area. To facilitate this, a public comment period will be open from May 5 to June 5, 2025.
https://ecology.wa.gov/events/spills/geographic-response-plans/middle-columbia-river-mcnary-pool
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
Monthly committee meeting
Public Event: June 11, 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.
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/june-2025
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.
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.
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.
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.
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.
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.
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
Chapter 173-167 WAC, Emergency Drought Funding (2025)
On April 8, 2025, Ecology adopted amendments to Chapter 173-167 WAC Emergency Drought Funding
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-167-2025
Chapter 173-167 WAC Emergency Drought Funding (2023)
This is the rulemaking page for Chapter 173-167 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2023
Lincoln Rock Hydrogen Facility
Comment Period: April 29, 2025, 12:01 a.m. - June 5, 2025, 11:59 a.m.
State Waste Discharge Permit Application
State Waste Discharge Permit Application
https://ecology.wa.gov/events/swm/lincoln-rock-hydrogen-facility/lincoln-rock-hydrogen-facility
Syngenta Seeds, Pasco
Comment Period: May 8, 2025, 12 a.m. - May 23, 2025, 11:59 p.m.
We propose to approve Syngenta Seeds' air quality notice of construction (NOC) application. We will hold a public comment period if one is requested.
We propose to approve Syngenta Seeds' air quality notice of construction (NOC) application. We will hold a public comment period if one is requested.
https://ecology.wa.gov/events/aq/notice-of-construction-applications/syngenta-seeds-comment-ends-5-23-25
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
Public Hearing
Public Event: May 13, 2025, 5:30 p.m., in Online only
We will host a public hearing on Zoom on May 13, 2025 at 5:30 p.m.
We will host a public hearing on Zoom on May 13, 2025 at 5:30 p.m.
https://ecology.wa.gov/events/wq/simplot/hearing
2025 Washington Brownfields Conference – Day One
Public Event: May 20, 2025, 11:30 a.m., in Yakima, WA
Join community leaders and brownfield professionals at this two-day conference. Get strategies for redeveloping vacant or underutilized properties that may be contaminated, and learn how to turn them into gems like affordable housing, retail, and parks.
Join community leaders and brownfield professionals at this two-day conference. Get strategies for redeveloping vacant or underutilized properties that may be contaminated, and learn how to turn them into gems like affordable housing, retail, and parks.
https://ecology.wa.gov/events/tcp/2025-washington-brownfields-conference/2025-washington-brownfields-conference-day-one
2025 Washington Brownfields Conference – Day Two
Public Event: May 21, 2025, 7:30 a.m., in Yakima, WA
Join community leaders and brownfield professionals at this two-day conference. Get strategies for redeveloping vacant or underutilized properties that may be contaminated, and learn how to turn them into gems like affordable housing, retail, and parks.
Join community leaders and brownfield professionals at this two-day conference. Get strategies for redeveloping vacant or underutilized properties that may be contaminated, and learn how to turn them into gems like affordable housing, retail, and parks.
https://ecology.wa.gov/events/tcp/2025-washington-brownfields-conference/2025-washington-brownfields-conference-day-two
Safer Products for Washington webinar
Public Event: June 17, 2025, 10 a.m., in Online webinar (morning)
Join us to learn about our Safer Products for Washington Cycle 2 Final Identification of Priority Products Report to the Legislature.
Join us to learn about our Safer Products for Washington Cycle 2 Final Identification of Priority Products Report to the Legislature.
https://ecology.wa.gov/events/hwtr/spwa-cycle-2/safer-products-morning-webinar
Safer Products for Washington webinar
Public Event: June 17, 2025, 5:30 p.m., in Online webinar (evening)
Join us to learn about our Safer Products for Washington Cycle 2 Final Identification of Priority Products Report to the Legislature.
Join us to learn about our Safer Products for Washington Cycle 2 Final Identification of Priority Products Report to the Legislature.
https://ecology.wa.gov/events/hwtr/spwa-cycle-2/safer-products-evening-webinar
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 173-360A 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
Chapter 173-158 WAC, Flood Plain Management
This is the rulemaking page for Chapter 173-158 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-158
Chapter 173-339 WAC – Cosmetic Products Restrictions (Lead in Cosmetics)
This is the rulemaking page for Chapter 137-339 WAC (Lead in Cosmetics).
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-339-lead-in-cosmetics
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 173-331 WAC
This is the rulemaking page for Chapter 173-331 WAC, Vehicle Battery Recycling.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-331-dec15
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
Chapters 173-422 and 173-422A WAC – Motor Vehicle Emission Inspection
This is the rulemaking page to repeal Chapters 173-422 and 173-422A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-422-422a
Chapter 173-442 WAC – Clean Air Rule
This is the rulemaking page to repeal Chapter 173-442 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-442
Chapters 173-491, 173-400, 173-455 WAC – Emission Standards and Controls for Sources Emitting Gasoline Vapors
This rulemaking was withdrawn August 19, 2021 regarding WAC 173-491, WAC 173-400 and WAC 173-455.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-491-jul13
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 173-350 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 173-201A WAC (Variances)
This is a rulemaking page for Chapter 173-201A WAC for variances in Spokane River.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac173-201a-variances
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 173-201A 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 (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 173-201A 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
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 173-337 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 173-340 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
Chapters 173-423 and 173-400 WAC – Clean Vehicles Program
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/wac173-423-400jan18
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