Public input & events — Listing

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Open the dates below to see all Ecology public comment periods and events during one week. These tools will help you filter to find what you're looking for:

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Hanford Sitewide Permit Lunch & Learn series - Hanford Sitewide Revision 9A
Meetings & Hearings
Online webinar Join Online
Start: 12 p.m.
Virtual talks focusing on specific topics within the Hanford Sitewide Permit draft renewal
> See event details
Glacier Northwest, Inc., Seattle — Comment on a site study
Aug. 17, 2026

Cleanup work is moving forward at the Glacier Northwest, Inc. cleanup site along the banks of the Lower Duwamish Waterway.

Draft Release and Public Review — Washington Department of Transportation Municipal Stormwater General Permit
Aug. 21, 2026

We invite you to review the draft 2026 Washington Department of Transportation Municipal Stormwater General Permit and share your comments with us.

CPM Development, Klickitat County portable rock crusher — Air quality application for general order coverage – Opportunity to request a public comment period
Aug. 21, 2026

We propose to approve CPM Development's air quality general order application for the Dallesport Smith Pit portable rock crusher. We will hold a public comment period if one is requested.

Sabey Data Center, East Wenatchee — Air quality notice of construction application
Aug. 24, 2026

We propose to approve Sabey Data Center’s Building E air quality notice of construction (NOC) application.

Palouse Producers — Comment on periodic review of this cleanup site
Aug. 25, 2026

You are invited to review and comment on the draft periodic review report.

King County Vashon Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 28, 2026

We invite your comments on the development of the King County Vashon Wastewater Treatment Plant draft permit no. WA0022527. The proposed draft permit includes new conditions necessary to regulate the discharge of nutrients from the Vashon Wastewater Treatment Plant to Puget Sound. 

Water Quality Permit Renewal and Fact Sheet — Puget Sound Energy Ferndale Generating Station
Aug. 31, 2026

We invite you to review and comment on the draft National Pollutant Discharge Elimination System (NPDES) Permit renewal and Fact Sheet for Puget Sound Energy Ferndale Generating Station.

Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite public comment on the modification of Permit No. WA0030317 for the Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility.

City of Anacortes Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Anacortes Wastewater Treatment Plant draft permit no. WA0020257.

City of Gig Harbor Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Gig Harbor Wastewater Treatment Plant draft permit no. WA0023957.

Public input survey — Washington's Water Future
Aug. 31, 2026

One way to engage in the Washington's Water Future initiative is to take the online survey between July 8 – Aug. 31, 2026.

Simplot Soilbuilders Sunnyside — Draft cleanup plan and site studies
Sept. 13, 2026

We invite your comments on a plan to clean up soil and groundwater at this site, as well as supporting documents.

TransAlta, Lewis County — Environmental review and air permit – Public comment period EXTENDED
Sept. 15, 2026

Comment on the environmental review documents and draft air permit (Prevention of Significant Deterioration, PSD) for TransAlta’s proposed coal-to-gas transition project.

Draft Release and Public Review — Modification of the Phase I Municipal Stormwater General Permit
Sept. 18, 2026

We invite you to review the draft 2026 modification of the Phase I Municipal Stormwater General Permit and share your comments with us.

Midway Sewer District Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Sept. 21, 2026

We invite your comments on the development of the Midway Sewer District Wastewater Treatment Plant draft permit no. WA0020958.

Hanford Sitewide Permit — Revision 9A comment period
Oct. 27, 2026

Starting June 29, 2026, we will be seeking input on one of our most important tools for overseeing cleanup of the Hanford Site.

Hanford Sitewide Permit Lunch & Learn series - Hanford Sitewide Revision 9A
Meetings & Hearings
Online webinar Join Online
Start: 12 p.m.
Virtual talks focusing on specific topics within the Hanford Sitewide Permit draft renewal
> See event details
Glacier Northwest, Inc., Seattle — Comment on a site study
Aug. 17, 2026

Cleanup work is moving forward at the Glacier Northwest, Inc. cleanup site along the banks of the Lower Duwamish Waterway.

Draft Release and Public Review — Washington Department of Transportation Municipal Stormwater General Permit
Aug. 21, 2026

We invite you to review the draft 2026 Washington Department of Transportation Municipal Stormwater General Permit and share your comments with us.

CPM Development, Klickitat County portable rock crusher — Air quality application for general order coverage – Opportunity to request a public comment period
Aug. 21, 2026

We propose to approve CPM Development's air quality general order application for the Dallesport Smith Pit portable rock crusher. We will hold a public comment period if one is requested.

Sabey Data Center, East Wenatchee — Air quality notice of construction application
Aug. 24, 2026

We propose to approve Sabey Data Center’s Building E air quality notice of construction (NOC) application.

Palouse Producers — Comment on periodic review of this cleanup site
Aug. 25, 2026

You are invited to review and comment on the draft periodic review report.

King County Vashon Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 28, 2026

We invite your comments on the development of the King County Vashon Wastewater Treatment Plant draft permit no. WA0022527. The proposed draft permit includes new conditions necessary to regulate the discharge of nutrients from the Vashon Wastewater Treatment Plant to Puget Sound. 

Water Quality Permit Renewal and Fact Sheet — Puget Sound Energy Ferndale Generating Station
Aug. 31, 2026

We invite you to review and comment on the draft National Pollutant Discharge Elimination System (NPDES) Permit renewal and Fact Sheet for Puget Sound Energy Ferndale Generating Station.

Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite public comment on the modification of Permit No. WA0030317 for the Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility.

City of Anacortes Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Anacortes Wastewater Treatment Plant draft permit no. WA0020257.

City of Gig Harbor Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Gig Harbor Wastewater Treatment Plant draft permit no. WA0023957.

Public input survey — Washington's Water Future
Aug. 31, 2026

One way to engage in the Washington's Water Future initiative is to take the online survey between July 8 – Aug. 31, 2026.

Rogers Brothers Seed, Colfax — Draft Agreed Order and Public Participation Plan
Sept. 8, 2026

You are invited to comment on draft documents for this cleanup site.

241-SY Tank Farm Exhausters — NOC Approval Order DE26NWP-002
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application on draft Approval Order DE26NWP-002.

Double-shell tank exhausters — NOC Approval Order – DE11NWP-001, Revision 5
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application which has been determined to be of significant public interest.

Exterior Wood, Inc. public comment — Cleanup documents ready for review and comment
Sept. 11, 2026

We are holding a public comment event for Exterior Wood, Inc. to review cleanup documents.

Tru-Grit Abrasives Inc. cleanup, Tacoma — Interim action plan, public participation plan, and SEPA determination of non-signifigance
Sept. 11, 2026

We invite you to review and comment on a plan for a partial cleanup at this contaminated site, and related documents.

Simplot Soilbuilders Sunnyside — Draft cleanup plan and site studies
Sept. 13, 2026

We invite your comments on a plan to clean up soil and groundwater at this site, as well as supporting documents.

TransAlta, Lewis County — Environmental review and air permit – Public comment period EXTENDED
Sept. 15, 2026

Comment on the environmental review documents and draft air permit (Prevention of Significant Deterioration, PSD) for TransAlta’s proposed coal-to-gas transition project.

Draft Release and Public Review — Modification of the Phase I Municipal Stormwater General Permit
Sept. 18, 2026

We invite you to review the draft 2026 modification of the Phase I Municipal Stormwater General Permit and share your comments with us.

Midway Sewer District Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Sept. 21, 2026

We invite your comments on the development of the Midway Sewer District Wastewater Treatment Plant draft permit no. WA0020958.

Hanford Sitewide Permit — Revision 9A comment period
Oct. 27, 2026

Starting June 29, 2026, we will be seeking input on one of our most important tools for overseeing cleanup of the Hanford Site.

Hanford Sitewide Permit Lunch & Learn series - Hanford Sitewide Revision 9A
Meetings & Hearings
Online webinar Join Online
Start: 12 p.m.
Virtual talks focusing on specific topics within the Hanford Sitewide Permit draft renewal
> See event details
Glacier Northwest, Inc., Seattle — Comment on a site study
Aug. 17, 2026

Cleanup work is moving forward at the Glacier Northwest, Inc. cleanup site along the banks of the Lower Duwamish Waterway.

Draft Release and Public Review — Washington Department of Transportation Municipal Stormwater General Permit
Aug. 21, 2026

We invite you to review the draft 2026 Washington Department of Transportation Municipal Stormwater General Permit and share your comments with us.

CPM Development, Klickitat County portable rock crusher — Air quality application for general order coverage – Opportunity to request a public comment period
Aug. 21, 2026

We propose to approve CPM Development's air quality general order application for the Dallesport Smith Pit portable rock crusher. We will hold a public comment period if one is requested.

Sabey Data Center, East Wenatchee — Air quality notice of construction application
Aug. 24, 2026

We propose to approve Sabey Data Center’s Building E air quality notice of construction (NOC) application.

Palouse Producers — Comment on periodic review of this cleanup site
Aug. 25, 2026

You are invited to review and comment on the draft periodic review report.

King County Vashon Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 28, 2026

We invite your comments on the development of the King County Vashon Wastewater Treatment Plant draft permit no. WA0022527. The proposed draft permit includes new conditions necessary to regulate the discharge of nutrients from the Vashon Wastewater Treatment Plant to Puget Sound. 

Water Quality Permit Renewal and Fact Sheet — Puget Sound Energy Ferndale Generating Station
Aug. 31, 2026

We invite you to review and comment on the draft National Pollutant Discharge Elimination System (NPDES) Permit renewal and Fact Sheet for Puget Sound Energy Ferndale Generating Station.

Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite public comment on the modification of Permit No. WA0030317 for the Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility.

City of Anacortes Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Anacortes Wastewater Treatment Plant draft permit no. WA0020257.

City of Gig Harbor Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Gig Harbor Wastewater Treatment Plant draft permit no. WA0023957.

Public input survey — Washington's Water Future
Aug. 31, 2026

One way to engage in the Washington's Water Future initiative is to take the online survey between July 8 – Aug. 31, 2026.

Rogers Brothers Seed, Colfax — Draft Agreed Order and Public Participation Plan
Sept. 8, 2026

You are invited to comment on draft documents for this cleanup site.

241-SY Tank Farm Exhausters — NOC Approval Order DE26NWP-002
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application on draft Approval Order DE26NWP-002.

Double-shell tank exhausters — NOC Approval Order – DE11NWP-001, Revision 5
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application which has been determined to be of significant public interest.

Exterior Wood, Inc. public comment — Cleanup documents ready for review and comment
Sept. 11, 2026

We are holding a public comment event for Exterior Wood, Inc. to review cleanup documents.

Tru-Grit Abrasives Inc. cleanup, Tacoma — Interim action plan, public participation plan, and SEPA determination of non-signifigance
Sept. 11, 2026

We invite you to review and comment on a plan for a partial cleanup at this contaminated site, and related documents.

Simplot Soilbuilders Sunnyside — Draft cleanup plan and site studies
Sept. 13, 2026

We invite your comments on a plan to clean up soil and groundwater at this site, as well as supporting documents.

TransAlta, Lewis County — Environmental review and air permit – Public comment period EXTENDED
Sept. 15, 2026

Comment on the environmental review documents and draft air permit (Prevention of Significant Deterioration, PSD) for TransAlta’s proposed coal-to-gas transition project.

Draft Release and Public Review — Modification of the Phase I Municipal Stormwater General Permit
Sept. 18, 2026

We invite you to review the draft 2026 modification of the Phase I Municipal Stormwater General Permit and share your comments with us.

Midway Sewer District Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Sept. 21, 2026

We invite your comments on the development of the Midway Sewer District Wastewater Treatment Plant draft permit no. WA0020958.

Hanford Sitewide Permit — Revision 9A comment period
Oct. 27, 2026

Starting June 29, 2026, we will be seeking input on one of our most important tools for overseeing cleanup of the Hanford Site.

Hanford Sitewide Permit Lunch & Learn series - Hanford Sitewide Revision 9A
Meetings & Hearings
Online webinar Join Online
Start: 12 p.m.
Virtual talks focusing on specific topics within the Hanford Sitewide Permit draft renewal
> See event details
Glacier Northwest, Inc., Seattle — Comment on a site study
Aug. 17, 2026

Cleanup work is moving forward at the Glacier Northwest, Inc. cleanup site along the banks of the Lower Duwamish Waterway.

Draft Release and Public Review — Washington Department of Transportation Municipal Stormwater General Permit
Aug. 21, 2026

We invite you to review the draft 2026 Washington Department of Transportation Municipal Stormwater General Permit and share your comments with us.

CPM Development, Klickitat County portable rock crusher — Air quality application for general order coverage – Opportunity to request a public comment period
Aug. 21, 2026

We propose to approve CPM Development's air quality general order application for the Dallesport Smith Pit portable rock crusher. We will hold a public comment period if one is requested.

Sabey Data Center, East Wenatchee — Air quality notice of construction application
Aug. 24, 2026

We propose to approve Sabey Data Center’s Building E air quality notice of construction (NOC) application.

Palouse Producers — Comment on periodic review of this cleanup site
Aug. 25, 2026

You are invited to review and comment on the draft periodic review report.

King County Vashon Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 28, 2026

We invite your comments on the development of the King County Vashon Wastewater Treatment Plant draft permit no. WA0022527. The proposed draft permit includes new conditions necessary to regulate the discharge of nutrients from the Vashon Wastewater Treatment Plant to Puget Sound. 

Water Quality Permit Renewal and Fact Sheet — Puget Sound Energy Ferndale Generating Station
Aug. 31, 2026

We invite you to review and comment on the draft National Pollutant Discharge Elimination System (NPDES) Permit renewal and Fact Sheet for Puget Sound Energy Ferndale Generating Station.

Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite public comment on the modification of Permit No. WA0030317 for the Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility.

City of Anacortes Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Anacortes Wastewater Treatment Plant draft permit no. WA0020257.

City of Gig Harbor Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Gig Harbor Wastewater Treatment Plant draft permit no. WA0023957.

Public input survey — Washington's Water Future
Aug. 31, 2026

One way to engage in the Washington's Water Future initiative is to take the online survey between July 8 – Aug. 31, 2026.

Rogers Brothers Seed, Colfax — Draft Agreed Order and Public Participation Plan
Sept. 8, 2026

You are invited to comment on draft documents for this cleanup site.

241-SY Tank Farm Exhausters — NOC Approval Order DE26NWP-002
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application on draft Approval Order DE26NWP-002.

Double-shell tank exhausters — NOC Approval Order – DE11NWP-001, Revision 5
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application which has been determined to be of significant public interest.

Exterior Wood, Inc. public comment — Cleanup documents ready for review and comment
Sept. 11, 2026

We are holding a public comment event for Exterior Wood, Inc. to review cleanup documents.

Tru-Grit Abrasives Inc. cleanup, Tacoma — Interim action plan, public participation plan, and SEPA determination of non-signifigance
Sept. 11, 2026

We invite you to review and comment on a plan for a partial cleanup at this contaminated site, and related documents.

Simplot Soilbuilders Sunnyside — Draft cleanup plan and site studies
Sept. 13, 2026

We invite your comments on a plan to clean up soil and groundwater at this site, as well as supporting documents.

TransAlta, Lewis County — Environmental review and air permit – Public comment period EXTENDED
Sept. 15, 2026

Comment on the environmental review documents and draft air permit (Prevention of Significant Deterioration, PSD) for TransAlta’s proposed coal-to-gas transition project.

Draft Release and Public Review — Modification of the Phase I Municipal Stormwater General Permit
Sept. 18, 2026

We invite you to review the draft 2026 modification of the Phase I Municipal Stormwater General Permit and share your comments with us.

Midway Sewer District Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Sept. 21, 2026

We invite your comments on the development of the Midway Sewer District Wastewater Treatment Plant draft permit no. WA0020958.

Public Notice of Water Quality Permit Renewal Application — Northwest Alloys Inc., Addy
Sept. 23, 2026

We invite you to review and comment on the application for the State Waste Discharge permit renewal for Northwest Alloys, Inc. in Addy (Stevens County).

Hanford Sitewide Permit — Revision 9A comment period
Oct. 27, 2026

Starting June 29, 2026, we will be seeking input on one of our most important tools for overseeing cleanup of the Hanford Site.

Water utilities and local governments session - Washington's Water Future
Meetings & Hearings
Online webinar Join Online
Start: 1 p.m.
This meeting is intended for individuals representing water utilities and local governments across Washington as part of Washington’s Water Future Initiative.
> See event details
Hanford Sitewide Permit Lunch & Learn series - Hanford Sitewide Revision 9A
Meetings & Hearings
Online webinar Join Online
Start: 12 p.m.
Virtual talks focusing on specific topics within the Hanford Sitewide Permit draft renewal
> See event details
Glacier Northwest, Inc., Seattle — Comment on a site study
Aug. 17, 2026

Cleanup work is moving forward at the Glacier Northwest, Inc. cleanup site along the banks of the Lower Duwamish Waterway.

Draft Release and Public Review — Washington Department of Transportation Municipal Stormwater General Permit
Aug. 21, 2026

We invite you to review the draft 2026 Washington Department of Transportation Municipal Stormwater General Permit and share your comments with us.

CPM Development, Klickitat County portable rock crusher — Air quality application for general order coverage – Opportunity to request a public comment period
Aug. 21, 2026

We propose to approve CPM Development's air quality general order application for the Dallesport Smith Pit portable rock crusher. We will hold a public comment period if one is requested.

Sabey Data Center, East Wenatchee — Air quality notice of construction application
Aug. 24, 2026

We propose to approve Sabey Data Center’s Building E air quality notice of construction (NOC) application.

Palouse Producers — Comment on periodic review of this cleanup site
Aug. 25, 2026

You are invited to review and comment on the draft periodic review report.

King County Vashon Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 28, 2026

We invite your comments on the development of the King County Vashon Wastewater Treatment Plant draft permit no. WA0022527. The proposed draft permit includes new conditions necessary to regulate the discharge of nutrients from the Vashon Wastewater Treatment Plant to Puget Sound. 

Water Quality Permit Renewal and Fact Sheet — Puget Sound Energy Ferndale Generating Station
Aug. 31, 2026

We invite you to review and comment on the draft National Pollutant Discharge Elimination System (NPDES) Permit renewal and Fact Sheet for Puget Sound Energy Ferndale Generating Station.

Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite public comment on the modification of Permit No. WA0030317 for the Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility.

City of Anacortes Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Anacortes Wastewater Treatment Plant draft permit no. WA0020257.

City of Gig Harbor Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Gig Harbor Wastewater Treatment Plant draft permit no. WA0023957.

Public input survey — Washington's Water Future
Aug. 31, 2026

One way to engage in the Washington's Water Future initiative is to take the online survey between July 8 – Aug. 31, 2026.

Rogers Brothers Seed, Colfax — Draft Agreed Order and Public Participation Plan
Sept. 8, 2026

You are invited to comment on draft documents for this cleanup site.

241-SY Tank Farm Exhausters — NOC Approval Order DE26NWP-002
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application on draft Approval Order DE26NWP-002.

Double-shell tank exhausters — NOC Approval Order – DE11NWP-001, Revision 5
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application which has been determined to be of significant public interest.

Exterior Wood, Inc. public comment — Cleanup documents ready for review and comment
Sept. 11, 2026

We are holding a public comment event for Exterior Wood, Inc. to review cleanup documents.

Tru-Grit Abrasives Inc. cleanup, Tacoma — Interim action plan, public participation plan, and SEPA determination of non-signifigance
Sept. 11, 2026

We invite you to review and comment on a plan for a partial cleanup at this contaminated site, and related documents.

Simplot Soilbuilders Sunnyside — Draft cleanup plan and site studies
Sept. 13, 2026

We invite your comments on a plan to clean up soil and groundwater at this site, as well as supporting documents.

TransAlta, Lewis County — Environmental review and air permit – Public comment period EXTENDED
Sept. 15, 2026

Comment on the environmental review documents and draft air permit (Prevention of Significant Deterioration, PSD) for TransAlta’s proposed coal-to-gas transition project.

Draft Release and Public Review — Modification of the Phase I Municipal Stormwater General Permit
Sept. 18, 2026

We invite you to review the draft 2026 modification of the Phase I Municipal Stormwater General Permit and share your comments with us.

Midway Sewer District Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Sept. 21, 2026

We invite your comments on the development of the Midway Sewer District Wastewater Treatment Plant draft permit no. WA0020958.

Public Notice of Water Quality Permit Renewal Application — Northwest Alloys Inc., Addy
Sept. 23, 2026

We invite you to review and comment on the application for the State Waste Discharge permit renewal for Northwest Alloys, Inc. in Addy (Stevens County).

Hanford Sitewide Permit — Revision 9A comment period
Oct. 27, 2026

Starting June 29, 2026, we will be seeking input on one of our most important tools for overseeing cleanup of the Hanford Site.

Hanford Sitewide Permit Lunch & Learn series - Hanford Sitewide Revision 9A
Meetings & Hearings
Online webinar Join Online
Start: 12 p.m.
Virtual talks focusing on specific topics within the Hanford Sitewide Permit draft renewal
> See event details
Glacier Northwest, Inc., Seattle — Comment on a site study
Aug. 17, 2026

Cleanup work is moving forward at the Glacier Northwest, Inc. cleanup site along the banks of the Lower Duwamish Waterway.

Draft Release and Public Review — Washington Department of Transportation Municipal Stormwater General Permit
Aug. 21, 2026

We invite you to review the draft 2026 Washington Department of Transportation Municipal Stormwater General Permit and share your comments with us.

CPM Development, Klickitat County portable rock crusher — Air quality application for general order coverage – Opportunity to request a public comment period
Aug. 21, 2026

We propose to approve CPM Development's air quality general order application for the Dallesport Smith Pit portable rock crusher. We will hold a public comment period if one is requested.

Sabey Data Center, East Wenatchee — Air quality notice of construction application
Aug. 24, 2026

We propose to approve Sabey Data Center’s Building E air quality notice of construction (NOC) application.

Palouse Producers — Comment on periodic review of this cleanup site
Aug. 25, 2026

You are invited to review and comment on the draft periodic review report.

King County Vashon Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 28, 2026

We invite your comments on the development of the King County Vashon Wastewater Treatment Plant draft permit no. WA0022527. The proposed draft permit includes new conditions necessary to regulate the discharge of nutrients from the Vashon Wastewater Treatment Plant to Puget Sound. 

Water Quality Permit Renewal and Fact Sheet — Puget Sound Energy Ferndale Generating Station
Aug. 31, 2026

We invite you to review and comment on the draft National Pollutant Discharge Elimination System (NPDES) Permit renewal and Fact Sheet for Puget Sound Energy Ferndale Generating Station.

Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite public comment on the modification of Permit No. WA0030317 for the Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility.

City of Anacortes Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Anacortes Wastewater Treatment Plant draft permit no. WA0020257.

City of Gig Harbor Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Gig Harbor Wastewater Treatment Plant draft permit no. WA0023957.

Public input survey — Washington's Water Future
Aug. 31, 2026

One way to engage in the Washington's Water Future initiative is to take the online survey between July 8 – Aug. 31, 2026.

Rogers Brothers Seed, Colfax — Draft Agreed Order and Public Participation Plan
Sept. 8, 2026

You are invited to comment on draft documents for this cleanup site.

241-SY Tank Farm Exhausters — NOC Approval Order DE26NWP-002
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application on draft Approval Order DE26NWP-002.

Double-shell tank exhausters — NOC Approval Order – DE11NWP-001, Revision 5
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application which has been determined to be of significant public interest.

Exterior Wood, Inc. public comment — Cleanup documents ready for review and comment
Sept. 11, 2026

We are holding a public comment event for Exterior Wood, Inc. to review cleanup documents.

Tru-Grit Abrasives Inc. cleanup, Tacoma — Interim action plan, public participation plan, and SEPA determination of non-signifigance
Sept. 11, 2026

We invite you to review and comment on a plan for a partial cleanup at this contaminated site, and related documents.

Simplot Soilbuilders Sunnyside — Draft cleanup plan and site studies
Sept. 13, 2026

We invite your comments on a plan to clean up soil and groundwater at this site, as well as supporting documents.

TransAlta, Lewis County — Environmental review and air permit – Public comment period EXTENDED
Sept. 15, 2026

Comment on the environmental review documents and draft air permit (Prevention of Significant Deterioration, PSD) for TransAlta’s proposed coal-to-gas transition project.

Draft Release and Public Review — Modification of the Phase I Municipal Stormwater General Permit
Sept. 18, 2026

We invite you to review the draft 2026 modification of the Phase I Municipal Stormwater General Permit and share your comments with us.

Midway Sewer District Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Sept. 21, 2026

We invite your comments on the development of the Midway Sewer District Wastewater Treatment Plant draft permit no. WA0020958.

Public Notice of Water Quality Permit Renewal Application — Northwest Alloys Inc., Addy
Sept. 23, 2026

We invite you to review and comment on the application for the State Waste Discharge permit renewal for Northwest Alloys, Inc. in Addy (Stevens County).

Hanford Sitewide Permit — Revision 9A comment period
Oct. 27, 2026

Starting June 29, 2026, we will be seeking input on one of our most important tools for overseeing cleanup of the Hanford Site.

Hanford Sitewide Permit Lunch & Learn series - Hanford Sitewide Revision 9A
Meetings & Hearings
Online webinar Join Online
Start: 12 p.m.
Virtual talks focusing on specific topics within the Hanford Sitewide Permit draft renewal
> See event details
Glacier Northwest, Inc., Seattle — Comment on a site study
Aug. 17, 2026

Cleanup work is moving forward at the Glacier Northwest, Inc. cleanup site along the banks of the Lower Duwamish Waterway.

Draft Release and Public Review — Washington Department of Transportation Municipal Stormwater General Permit
Aug. 21, 2026

We invite you to review the draft 2026 Washington Department of Transportation Municipal Stormwater General Permit and share your comments with us.

CPM Development, Klickitat County portable rock crusher — Air quality application for general order coverage – Opportunity to request a public comment period
Aug. 21, 2026

We propose to approve CPM Development's air quality general order application for the Dallesport Smith Pit portable rock crusher. We will hold a public comment period if one is requested.

Sabey Data Center, East Wenatchee — Air quality notice of construction application
Aug. 24, 2026

We propose to approve Sabey Data Center’s Building E air quality notice of construction (NOC) application.

Palouse Producers — Comment on periodic review of this cleanup site
Aug. 25, 2026

You are invited to review and comment on the draft periodic review report.

King County Vashon Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 28, 2026

We invite your comments on the development of the King County Vashon Wastewater Treatment Plant draft permit no. WA0022527. The proposed draft permit includes new conditions necessary to regulate the discharge of nutrients from the Vashon Wastewater Treatment Plant to Puget Sound. 

Water Quality Permit Renewal and Fact Sheet — Puget Sound Energy Ferndale Generating Station
Aug. 31, 2026

We invite you to review and comment on the draft National Pollutant Discharge Elimination System (NPDES) Permit renewal and Fact Sheet for Puget Sound Energy Ferndale Generating Station.

Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite public comment on the modification of Permit No. WA0030317 for the Kitsap County Public Utility District #1 — Fort Ward Water Reclamation Facility.

City of Anacortes Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Anacortes Wastewater Treatment Plant draft permit no. WA0020257.

City of Gig Harbor Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Aug. 31, 2026

We invite your comments on the development of the City of Gig Harbor Wastewater Treatment Plant draft permit no. WA0023957.

Public input survey — Washington's Water Future
Aug. 31, 2026

One way to engage in the Washington's Water Future initiative is to take the online survey between July 8 – Aug. 31, 2026.

Rogers Brothers Seed, Colfax — Draft Agreed Order and Public Participation Plan
Sept. 8, 2026

You are invited to comment on draft documents for this cleanup site.

241-SY Tank Farm Exhausters — NOC Approval Order DE26NWP-002
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application on draft Approval Order DE26NWP-002.

Double-shell tank exhausters — NOC Approval Order – DE11NWP-001, Revision 5
Sept. 9, 2026

We are holding a 30-day public comment period under WAC 173-400-171 (3)(n) for a Notice of Construction (NOC) Application which has been determined to be of significant public interest.

Exterior Wood, Inc. public comment — Cleanup documents ready for review and comment
Sept. 11, 2026

We are holding a public comment event for Exterior Wood, Inc. to review cleanup documents.

Tru-Grit Abrasives Inc. cleanup, Tacoma — Interim action plan, public participation plan, and SEPA determination of non-signifigance
Sept. 11, 2026

We invite you to review and comment on a plan for a partial cleanup at this contaminated site, and related documents.

Simplot Soilbuilders Sunnyside — Draft cleanup plan and site studies
Sept. 13, 2026

We invite your comments on a plan to clean up soil and groundwater at this site, as well as supporting documents.

TransAlta, Lewis County — Environmental review and air permit – Public comment period EXTENDED
Sept. 15, 2026

Comment on the environmental review documents and draft air permit (Prevention of Significant Deterioration, PSD) for TransAlta’s proposed coal-to-gas transition project.

Draft Release and Public Review — Modification of the Phase I Municipal Stormwater General Permit
Sept. 18, 2026

We invite you to review the draft 2026 modification of the Phase I Municipal Stormwater General Permit and share your comments with us.

Midway Sewer District Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Sept. 21, 2026

We invite your comments on the development of the Midway Sewer District Wastewater Treatment Plant draft permit no. WA0020958.

Public Notice of Water Quality Permit Renewal Application — Northwest Alloys Inc., Addy
Sept. 23, 2026

We invite you to review and comment on the application for the State Waste Discharge permit renewal for Northwest Alloys, Inc. in Addy (Stevens County).

Hanford Sitewide Permit — Revision 9A comment period
Oct. 27, 2026

Starting June 29, 2026, we will be seeking input on one of our most important tools for overseeing cleanup of the Hanford Site.