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Chapter 173-305 WAC
This is the rulemaking page for Chapter 173-305 WAC
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-305
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
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
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
Ecology and EPA Agreement for 2026-2027
Comment Period: April 17, 2025, 12 a.m. - May 17, 2025, 11:59 p.m.
We invite you to comment on the Department of Ecology and Environmental Protection Agency Performance Partnership Agreement for State Fiscal Years 2026-2027 for Washington State.
We invite you to comment on the Department of Ecology and Environmental Protection Agency Performance Partnership Agreement for State Fiscal Years 2026-2027 for Washington State.
https://ecology.wa.gov/events/hwtr/ppa/ppa-public-comment
Intergate Columbia, LLC Revised State Waste Discharge Permit Application
Comment Period: April 24, 2025, 12 a.m. - June 1, 2025, 11:59 p.m.
We invite you to comment on revised permit application ST0501309.
We invite you to comment on revised permit application ST0501309.
https://ecology.wa.gov/events/wq/waste-discharge-permits-2e5ab73db877bfab36ddd36a6a436930/intergate-columbia-llc
WestRock Mill, Tacoma
Comment Period: April 23, 2025, 12 a.m. - June 4, 2025, 11:59 p.m.
This is a modification of the WestRock Tacoma water quality permit.
This is a modification of the WestRock Tacoma water quality permit.
https://ecology.wa.gov/events/swm/westrock-mill-in-tacoma/westrock-tacoma
Organics management, Chapter 173-350 WAC
Public Event: Feb. 6, 2025, 10 a.m., in Online only
We are starting the rulemaking process to update Washington's organic materials management regulations under Chapter 173-350 WAC Solid Waste Handling Standards.
We are starting the rulemaking process to update Washington's organic materials management regulations under Chapter 173-350 WAC Solid Waste Handling Standards.
https://ecology.wa.gov/events/rulemaking/173-350-wac-organics/173-350-wac-organics-feb6meeting
WestRock Mill in Tacoma
Public Event: May 28, 2025, 5:30 p.m., in Online webinar
An online public hearing to accept oral comments will be held on May 28, 2025 at 5:30 p.m.
An online public hearing to accept oral comments will be held on May 28, 2025 at 5:30 p.m.
https://ecology.wa.gov/events/swm/westrock-mill-in-tacoma/westrock-tacoma-water-quality-permit
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
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 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
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 173-201A 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 173-446B WAC – Climate Commitment Act Funds Reporting
This is the rulemaking page for Chapter 173-446B WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446b
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 173-224 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
Chapter 173-503A WAC
This is the rulemaking page for Chapter 173-503A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-503a-feb15
Chapter 173-525 WAC
This is the rulemaking page for Chapter 173-525 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-525-mar05
Chapter 173-526 WAC
This is the rulemaking page for Chapter 173-526 WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-526-mar05
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
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 173-201A 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 173-350 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 173-135 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
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
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
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 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 173-443 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 173-167 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
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
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
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
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: May 14, 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/may-2025
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
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