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Public input & events — Listing

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MTCA Cleanup Orders and Public Participation Plan — Cosmo Specialty Fibers

Everybody's Brewing LLC Draft Permit — State Waste Discharge Permit

Air Operating Permit Renewal 4 — Air Operating Permit Renewal 4

Port Ludlow Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Carlyon Beach Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Microsoft Malaga Data Center Campus (EAT12, EAT13, EAT14) — Wastewater Discharge Permit - State Waste Discharge Permit

Drayton Harbor draft water quality improvement plan — Total Maximum Daily Load (TMDL)

Boeing Kent Space Center public comment — Documents available for review

Draft area-specific general order for data centers — Air quality general orders

Ephrata Landfill, Grant County — Air Operating Permit

Cap-and-Invest Program Updates and Linkage, Chapter 173-441 & 173-446 WAC — Public comment period (informal) – Electric utility allocation topics

NuStar Terminals Operations Partnership, LP Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Clean Earth/Burlington Environmental - Kent public comment — Documents available for review

Draft 2026-2027 Budget and Fee Schedule — Air quality registration

Pilot Travel Center 389 — Remedial Investigation Work Plan

National Products Inc. Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Barbee Mill Company — Public Comment Period

Formal Draft Comment Period — Sand and Gravel General Permit

Tidewater Barge Lines Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

DeBocks Main Street Texaco — Comment on Interim Action Work Plan

Ocean Shores Wastewater Treatment Plant Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

High-Level Waste Vitrification Facility — Waste Treatment Plant permit modification

Amendment to Instream Resources Protection Program rules for, WRIA 7, 8, 13, 14, 15 — Rulemaking – informal comment period

Draft Release and Public Review — Aquatic Plant and Algae Management General Permit

Van Stone Mine, Onion Creek, Stevens County — Plans to lower the dam spillway at North Pit Lake

Open comment periods:

Closing date:

MTCA Cleanup Orders and Public Participation Plan — Cosmo Specialty Fibers

Everybody's Brewing LLC Draft Permit — State Waste Discharge Permit

Air Operating Permit Renewal 4 — Air Operating Permit Renewal 4

Port Ludlow Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Carlyon Beach Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Microsoft Malaga Data Center Campus (EAT12, EAT13, EAT14) — Wastewater Discharge Permit - State Waste Discharge Permit

Drayton Harbor draft water quality improvement plan — Total Maximum Daily Load (TMDL)

Boeing Kent Space Center public comment — Documents available for review

Draft area-specific general order for data centers — Air quality general orders

Ephrata Landfill, Grant County — Air Operating Permit

Cap-and-Invest Program Updates and Linkage, Chapter 173-441 & 173-446 WAC — Public comment period (informal) – Electric utility allocation topics

NuStar Terminals Operations Partnership, LP Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Clean Earth/Burlington Environmental - Kent public comment — Documents available for review

Draft 2026-2027 Budget and Fee Schedule — Air quality registration

Pilot Travel Center 389 — Remedial Investigation Work Plan

National Products Inc. Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Barbee Mill Company — Public Comment Period

Formal Draft Comment Period — Sand and Gravel General Permit

Tidewater Barge Lines Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

DeBocks Main Street Texaco — Comment on Interim Action Work Plan

Ocean Shores Wastewater Treatment Plant Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

High-Level Waste Vitrification Facility — Waste Treatment Plant permit modification

Amendment to Instream Resources Protection Program rules for, WRIA 7, 8, 13, 14, 15 — Rulemaking – informal comment period

Draft Release and Public Review — Aquatic Plant and Algae Management General Permit

Van Stone Mine, Onion Creek, Stevens County — Plans to lower the dam spillway at North Pit Lake

September Virtual Open House - Chapter 173-26 and 173-27 WAC, Shoreline Management Act

Meetings & Hearings

online webinar Join Online

Start: 6 p.m.

Join our Virtual Open House on September 16 from 6 p.m. - 7 p.m.

> See event details

MTCA Cleanup Orders and Public Participation Plan — Cosmo Specialty Fibers

Everybody's Brewing LLC Draft Permit — State Waste Discharge Permit

Air Operating Permit Renewal 4 — Air Operating Permit Renewal 4

Port Ludlow Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Carlyon Beach Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Microsoft Malaga Data Center Campus (EAT12, EAT13, EAT14) — Wastewater Discharge Permit - State Waste Discharge Permit

Drayton Harbor draft water quality improvement plan — Total Maximum Daily Load (TMDL)

Boeing Kent Space Center public comment — Documents available for review

Draft area-specific general order for data centers — Air quality general orders

Ephrata Landfill, Grant County — Air Operating Permit

Cap-and-Invest Program Updates and Linkage, Chapter 173-441 & 173-446 WAC — Public comment period (informal) – Electric utility allocation topics

NuStar Terminals Operations Partnership, LP Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Clean Earth/Burlington Environmental - Kent public comment — Documents available for review

Draft 2026-2027 Budget and Fee Schedule — Air quality registration

Pilot Travel Center 389 — Remedial Investigation Work Plan

National Products Inc. Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Barbee Mill Company — Public Comment Period

Formal Draft Comment Period — Sand and Gravel General Permit

Tidewater Barge Lines Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

DeBocks Main Street Texaco — Comment on Interim Action Work Plan

Ocean Shores Wastewater Treatment Plant Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

High-Level Waste Vitrification Facility — Waste Treatment Plant permit modification

Amendment to Instream Resources Protection Program rules for, WRIA 7, 8, 13, 14, 15 — Rulemaking – informal comment period

Draft Release and Public Review — Aquatic Plant and Algae Management General Permit

Van Stone Mine, Onion Creek, Stevens County — Plans to lower the dam spillway at North Pit Lake

Open comment periods:

Closing date:

Everybody's Brewing LLC Draft Permit — State Waste Discharge Permit

Air Operating Permit Renewal 4 — Air Operating Permit Renewal 4

Port Ludlow Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Carlyon Beach Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Microsoft Malaga Data Center Campus (EAT12, EAT13, EAT14) — Wastewater Discharge Permit - State Waste Discharge Permit

Drayton Harbor draft water quality improvement plan — Total Maximum Daily Load (TMDL)

Boeing Kent Space Center public comment — Documents available for review

Draft area-specific general order for data centers — Air quality general orders

Ephrata Landfill, Grant County — Air Operating Permit

Cap-and-Invest Program Updates and Linkage, Chapter 173-441 & 173-446 WAC — Public comment period (informal) – Electric utility allocation topics

NuStar Terminals Operations Partnership, LP Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Clean Earth/Burlington Environmental - Kent public comment — Documents available for review

Draft 2026-2027 Budget and Fee Schedule — Air quality registration

Pilot Travel Center 389 — Remedial Investigation Work Plan

National Products Inc. Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Barbee Mill Company — Public Comment Period

Formal Draft Comment Period — Sand and Gravel General Permit

Tidewater Barge Lines Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

DeBocks Main Street Texaco — Comment on Interim Action Work Plan

Ocean Shores Wastewater Treatment Plant Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

High-Level Waste Vitrification Facility — Waste Treatment Plant permit modification

Amendment to Instream Resources Protection Program rules for, WRIA 7, 8, 13, 14, 15 — Rulemaking – informal comment period

Perdue Foods, LLC - Lynden Hatchery — Wastewater Discharge Permit - State Waste Discharge Permit

Soos Creek draft water quality improvement plan — Total Maximum Daily Load

Draft Release and Public Review — Aquatic Plant and Algae Management General Permit

Twelve Benefit Corporation Permit Application — Wastewater Discharge Permit - State Waste Discharge Permit

Van Stone Mine, Onion Creek, Stevens County — Plans to lower the dam spillway at North Pit Lake

Open comment periods:

Closing date:

Everybody's Brewing LLC Draft Permit — State Waste Discharge Permit

Air Operating Permit Renewal 4 — Air Operating Permit Renewal 4

Port Ludlow Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Carlyon Beach Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Microsoft Malaga Data Center Campus (EAT12, EAT13, EAT14) — Wastewater Discharge Permit - State Waste Discharge Permit

Drayton Harbor draft water quality improvement plan — Total Maximum Daily Load (TMDL)

Boeing Kent Space Center public comment — Documents available for review

Draft area-specific general order for data centers — Air quality general orders

Ephrata Landfill, Grant County — Air Operating Permit

Cap-and-Invest Program Updates and Linkage, Chapter 173-441 & 173-446 WAC — Public comment period (informal) – Electric utility allocation topics

NuStar Terminals Operations Partnership, LP Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Clean Earth/Burlington Environmental - Kent public comment — Documents available for review

Draft 2026-2027 Budget and Fee Schedule — Air quality registration

A-Jacks Auto Services and Towing, Pasco — Cancellation of coverage under air quality general order – Opportunity to request a public comment period

Columbia Pulp, Starbuck — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Dawn Mining, Ford — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Lamb Weston, Connell — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Pilot Travel Center 389 — Remedial Investigation Work Plan

National Products Inc. Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Barbee Mill Company — Public Comment Period

Formal Draft Comment Period — Sand and Gravel General Permit

Tidewater Barge Lines Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

DeBocks Main Street Texaco — Comment on Interim Action Work Plan

Ocean Shores Wastewater Treatment Plant Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

High-Level Waste Vitrification Facility — Waste Treatment Plant permit modification

Amendment to Instream Resources Protection Program rules for, WRIA 7, 8, 13, 14, 15 — Rulemaking – informal comment period

Perdue Foods, LLC - Lynden Hatchery — Wastewater Discharge Permit - State Waste Discharge Permit

Gas Transmission Northwest Station #8, Wallula — Air Operating Permit

Soos Creek draft water quality improvement plan — Total Maximum Daily Load

Draft Release and Public Review — Aquatic Plant and Algae Management General Permit

Twelve Benefit Corporation Permit Application — Wastewater Discharge Permit - State Waste Discharge Permit

Van Stone Mine, Onion Creek, Stevens County — Plans to lower the dam spillway at North Pit Lake

Open comment periods:

Closing date:

Everybody's Brewing LLC Draft Permit — State Waste Discharge Permit

Air Operating Permit Renewal 4 — Air Operating Permit Renewal 4

Port Ludlow Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Carlyon Beach Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Microsoft Malaga Data Center Campus (EAT12, EAT13, EAT14) — Wastewater Discharge Permit - State Waste Discharge Permit

Drayton Harbor draft water quality improvement plan — Total Maximum Daily Load (TMDL)

Boeing Kent Space Center public comment — Documents available for review

Draft area-specific general order for data centers — Air quality general orders

Ephrata Landfill, Grant County — Air Operating Permit

Cap-and-Invest Program Updates and Linkage, Chapter 173-441 & 173-446 WAC — Public comment period (informal) – Electric utility allocation topics

NuStar Terminals Operations Partnership, LP Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Clean Earth/Burlington Environmental - Kent public comment — Documents available for review

Draft 2026-2027 Budget and Fee Schedule — Air quality registration

A-Jacks Auto Services and Towing, Pasco — Cancellation of coverage under air quality general order – Opportunity to request a public comment period

Columbia Pulp, Starbuck — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Dawn Mining, Ford — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Lamb Weston, Connell — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Pilot Travel Center 389 — Remedial Investigation Work Plan

National Products Inc. Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Barbee Mill Company — Public Comment Period

Formal Draft Comment Period — Sand and Gravel General Permit

Tidewater Barge Lines Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

DeBocks Main Street Texaco — Comment on Interim Action Work Plan

Ocean Shores Wastewater Treatment Plant Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

High-Level Waste Vitrification Facility — Waste Treatment Plant permit modification

Amendment to Instream Resources Protection Program rules for, WRIA 7, 8, 13, 14, 15 — Rulemaking – informal comment period

Perdue Foods, LLC - Lynden Hatchery — Wastewater Discharge Permit - State Waste Discharge Permit

Gas Transmission Northwest Station #8, Wallula — Air Operating Permit

Soos Creek draft water quality improvement plan — Total Maximum Daily Load

Draft Release and Public Review — Aquatic Plant and Algae Management General Permit

Twelve Benefit Corporation Permit Application — Wastewater Discharge Permit - State Waste Discharge Permit

Van Stone Mine, Onion Creek, Stevens County — Plans to lower the dam spillway at North Pit Lake

Open comment periods:

Closing date:

Port Ludlow Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Carlyon Beach Wastewater Treatment Plant — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Microsoft Malaga Data Center Campus (EAT12, EAT13, EAT14) — Wastewater Discharge Permit - State Waste Discharge Permit

Drayton Harbor draft water quality improvement plan — Total Maximum Daily Load (TMDL)

Boeing Kent Space Center public comment — Documents available for review

Draft area-specific general order for data centers — Air quality general orders

Ephrata Landfill, Grant County — Air Operating Permit

Cap-and-Invest Program Updates and Linkage, Chapter 173-441 & 173-446 WAC — Public comment period (informal) – Electric utility allocation topics

NuStar Terminals Operations Partnership, LP Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Clean Earth/Burlington Environmental - Kent public comment — Documents available for review

Draft 2026-2027 Budget and Fee Schedule — Air quality registration

A-Jacks Auto Services and Towing, Pasco — Cancellation of coverage under air quality general order – Opportunity to request a public comment period

Columbia Pulp, Starbuck — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Dawn Mining, Ford — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Lamb Weston, Connell — Cancellation of air quality notice of construction permit – Opportunity to request a public comment period

Pilot Travel Center 389 — Remedial Investigation Work Plan

National Products Inc. Draft Permit — Wastewater Discharge Permit - State Waste Discharge Permit

Barbee Mill Company — Public Comment Period

Formal Draft Comment Period — Sand and Gravel General Permit

Tidewater Barge Lines Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

DeBocks Main Street Texaco — Comment on Interim Action Work Plan

Ocean Shores Wastewater Treatment Plant Draft Permit — National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

High-Level Waste Vitrification Facility — Waste Treatment Plant permit modification

Amendment to Instream Resources Protection Program rules for, WRIA 7, 8, 13, 14, 15 — Rulemaking – informal comment period

Perdue Foods, LLC - Lynden Hatchery — Wastewater Discharge Permit - State Waste Discharge Permit

Gas Transmission Northwest Station #8, Wallula — Air Operating Permit

Soos Creek draft water quality improvement plan — Total Maximum Daily Load

Draft Release and Public Review — Aquatic Plant and Algae Management General Permit

Twelve Benefit Corporation Permit Application — Wastewater Discharge Permit - State Waste Discharge Permit

Van Stone Mine, Onion Creek, Stevens County — Plans to lower the dam spillway at North Pit Lake