Search Results - Washington State Department of Ecology

Draft 2021-2025 Section 309 Assessment & Strategy

Every five years, states and territories are encouraged to conduct self-assessments of their coastal management programs to determine problems and enhancement opportunities within each of the nine enhancement areas—and to assess the effectiveness of existing management efforts to address identified problems.

https://ecology.wa.gov/washington-coastal-zone-management-section-309-ass

121317CoverageandSSLAPforFMFRosmanUnit.pdf

Final coverage letter and related documents for biosolids application permit at Rosman Farms in Lincoln County.

https://ecology.wa.gov/121317coverageandsslapforfmfrosmanunit-pdf

Swift Creek Construction Diagram March 2021 Text Description

This text description explains the diagram of engineered controls and construction schedule for the Swift Creek Project.

https://ecology.wa.gov/swift-creek-construction-diagram-text-description

Swift Creek Construction Diagram March 2021 Text Description Spanish

This text description explains the diagram of engineered controls and construction schedule for the Swift Creek Project.

https://ecology.wa.gov/swift-creek-construction-diagram-text-descript-1

Ch173350_3rdPrelimDraft121516-PartFive.pdf

Part Five: 500 Groundwater monitoring, -600 Financial assurance requirements, -700 Permits and local ordinances, -710 Permit application and issuance, -715 General permit application requirements, -900 Remedial action, and -995 Soil and sediment use criteria.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-partfive-pdf

SEPA CR-103

The Washington State Department of Ecology is adopting expedited rulemaking at the direction of the Washington legislature to amend Chapter 197-11 WAC, SEPA Rules. This rulemaking will incorporate amendments and new language in Chapter 43.21C RCW, State Environmental Policy Act (SEPA) and amends other sections of the rule to align with legislative directives.

https://ecology.wa.gov/sepa-cr-103

Ch173350_3rdPrelimDraft121516-PartThree.pdf

Part Three: 310 Transfer stations and drop box facilities, -320 Piles used for storage or treatment, -330 Surface impoundments and tanks, -350 Waste tire storage, -355 Waste tire transportation, and -360 Moderate risk waste handling.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-partthree-pdf

Rulemaking Announcement (WAC 173-180; WAC 173-184) 08/03/21

This is a rulemaking announcement (CR-101) for WAC 173-180 Facility Oil Handling Standards; WAC 173-184 Vessel Oil Transfer Advance Notice and Containment Requirements.

https://ecology.wa.gov/rulemaking-announcement-wac-173-180;-wac-173-184

Rulemaking Announcement (WAC 173-557) 01/21/14

This is a rulemaking announcement (CR-101) for WAC 173-557 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/rulemaking-announcement-wac-173-557-01-21-14

Rulemaking Announcement 07/21/15

This is the first rulemaking announcement (CR 101) for Chapter 173-400 WAC General Regulations for Air Pollution Sources; Chapter 173-401 WAC Operating Permit Regulation.

https://ecology.wa.gov/rulemaking-announcement-wac-173-400;401-12-16-16

October Virtual Open House

Public Event: Oct. 21, 2025, 6 p.m., in online webinar
Join our Virtual Open House on October 21 from 6 p.m. - 7 p.m.

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

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

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

Streamflow restoration competitive grants

We manage a grant program for streamflow restoration (chapter 90.94 RCW) implementation projects.

https://ecology.wa.gov/about-us/payments-contracts-grants/grants-loans/find-a-grant-or-loan/streamflow-restoration-implementation-grants

Organics management rulemaking

Comment Period: Oct. 21, 2025, 12 a.m. - Nov. 21, 2025, 11:59 p.m.
We invite you to review and comment on the draft language for the organics management rulemaking.

https://ecology.wa.gov/events/swm/organics-rulemaking/organics-rulemaking-informal-comment-period

Chapter 173-441 WAC – Reporting of Emissions of Greenhouse Gases

This is the rulemaking page for Chapter 173-441 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-441

Chapter 173-423 WAC<br>and WAC 173-400-025 – Low Emission Vehicles

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/wac-173-423-400

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 173-167 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 173-219 WAC

On January 23, 2018 the Department of Ecology adopted new rule, Chapter 173-219 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-219-jun14

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

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

Walla Walla developed water

Comment Period: Oct. 7, 2025, 8 a.m. - Nov. 21, 2025, 11:59 p.m.
We have developed a new draft policy and interpretive statement relating to water resource management in the Walla Walla River basin (WRIA 32).

https://ecology.wa.gov/events/wr/wrp-policy/walla-walla-developed-water-policy-statement

Draft for comment

Comment Period: Oct. 21, 2025, 12 a.m. - Dec. 5, 2025, 11:59 p.m.
You are invited to review the draft update of POL-1020, Consumptive and Nonconsumptive Water Use Policy and Interpretive Statement and share your comments with us.

https://ecology.wa.gov/events/wr/wrp-policy/pol-1020-fall-2025

Chapter 173-201A WAC (Chelan UAA)

This is the rulemaking page for Chapter 173-201A WAC (Chelan UAA)

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

Chapter 173-446 WAC – Climate Commitment Act Program Rule

This is the rulemaking page for Chapter 173-446 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446

Sustainable Aviation Fuel Programmatic Environmental Impact Statement scoping

Public Event: Oct. 21, 2025, 1 p.m., in Online webinar

https://ecology.wa.gov/events/sea/clean-energy-coordination/sustainable-aviation-fuel-programmatic-environmental-impact-statement-scoping-meeting-1

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 173-424 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 173-443 WAC – Hydrofluorocarbons (HFCs)

On Dec. 10, 2020, Ecology adopted a new rule, Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac173-443

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 173-217 WAC – State Waters Alteration Permit

This is the rulemaking page for Chapter 173-217 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-217

Mossyrock Wastewater Treatment Plant Draft Permit

Comment Period: Sept. 30, 2025, 12:05 a.m. - Oct. 30, 2025, 11:55 p.m.
We invite you to comment on the draft permit No. WA0021024

https://ecology.wa.gov/events/wq/npdes-discharge-permit/city-of-mossyrock

Development Schedules for Water Right Changes and Transfers (POL-1280)

Comment Period: Oct. 21, 2025, 12 a.m. - Dec. 5, 2025, 11:59 p.m.
You are invited to review the draft update of POL-1280, Development Schedules for Water Right Changes and Transfers Policy and Interpretive Statement and share your comments with us.

https://ecology.wa.gov/events/wr/wrp-policy/pol-1280-fall-2025

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

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 173-455 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 173-491, 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

CyrusOne Data Center, Quincy

Comment Period: Oct. 21, 2025, 12 a.m. - Dec. 1, 2025, 11:59 p.m.
We propose to approve CyrusOne Data Center’s air quality notice of construction application.

https://ecology.wa.gov/events/aq/notice-of-construction-applications/cyrusone-comment-ends-12-1-25

Chapter 173-180 WAC and Chapter 173-184 WAC

This is the rulemaking page for Chapter 173-180 WAC and Chapter 173-184 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-180-173-184

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

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

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

Olympia Brewery transformer spill

A spill of transformer oil is now controlled at the former Olympia Brewery in Tumwater.

https://ecology.wa.gov/spills-cleanup/spills/spill-preparedness-response/responding-to-spill-incidents/spill-incidents/olympia-brewery-transformer-spill

Olympic Pipeline gasoline spill near Conway

Ecology and partners respond to the Olympic Pipeline gasoline spill near Conway.

https://ecology.wa.gov/spills-cleanup/spills/spill-preparedness-response/responding-to-spill-incidents/spill-incidents/olympic-pipeline-gasoline-spill-mt-vernon

Teck Washington, Inc. Draft Permit

Comment Period: Oct. 15, 2025, 12 a.m. - Nov. 14, 2025, 11:59 p.m.
We invite your comments on draft State Waste Discharge permit ST0501348 being issued to Teck Washington, Inc. located in Pend Oreille County.

https://ecology.wa.gov/events/wq/waste-discharge-permits-2e5ab73db877bfab36ddd36a6a436930/teck-washington-inc-public-notice

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