Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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Fire Mountain Farms vicinity map

Vicinity map for Fire Mountain Farms' proposed biosolids land application site

https://ecology.wa.gov/vicinity-map

Previous Permit 2014 Fact Sheet

Water Treatment Plant 2014 previous permit fact sheet.

https://ecology.wa.gov/wtp-previous-fact-sheet

Vessel Desconstruction Permit

This permit defines requirements for pollution prevention during the dismantling of vessels.

https://ecology.wa.gov/vesseldeconstructionpermit

Wastewater Training sign in sheet

This is for instructors to use as a means to document student attendance.

https://ecology.wa.gov/ww-training-sign-in-sheet

Winery Permit Preliminary Draft

This is the 2017 Preliminary Draft of the Winery General Permit for Washington state.

https://ecology.wa.gov/winery-permit-preliminary-draft

Wetland Mod System

Ecology finds the Bio Clean Wetland Mod system is functionally equivalent to a bioretention facility when used for treating stormwater.

https://ecology.wa.gov/wetland-mod-system

WDFWTimingTable18Feb2016

This table provides WDFW recommended treatment windows for aquatic herbicide treatment. These windows are designed to avoid adverse impacts to Priority Species (federal- and state-listed and other sensitive and vulnerable species).

https://ecology.wa.gov/wdfwtiming-table

Western Washington Phase II Municipal Stormwater Permit Appendix 1

Appendix 1. Minimum Technical Requirements or New Development and Redevelopment

https://ecology.wa.gov/wwaphaseii-app1

Western Washington Phase II Municipal Stormwater Permit Appendix 2

Appendix 2. Total Maximum Daily Load Requirements

https://ecology.wa.gov/wwaphaseii-app2

Western Washington Phase II Municipal Stormwater Permit Appendix 3

Appendix 3. Annual Report Questions for Cities, Towns and Counties

https://ecology.wa.gov/wwaphaseii-app3

WGHOGA letter on NPDES permit application

Burrowing shrimp document: WGHOGA letter on NPDES permit application

https://ecology.wa.gov/wghoga-letter-on-npdes-permit-application

Western Washington Phase II Municipal Stormwater Permit Appendix 4

Appendix 4. Annual Report Questions for Secondary Permittees

https://ecology.wa.gov/wwaphaseii-app4

WGHOGA Public Notice of Intent to Deny NPDES Permit letter

This document contains the letter, public notice, and description of the Intent to Deny the NPDES permit for WGHOGA

https://ecology.wa.gov/wghoga-public-notice-npdes-letter

WGHOGA transmittal letter for NPDES permit application

Burrowing shirmp document: WGHOGA transmittal letter for NPDES permit application

https://ecology.wa.gov/wghoga-transmittal-letter-for-npdes-permit-applica

Western Washington Municipal Stormwater Permits 2019 Permit extension guidance

Here we answer frequently asked questions about the Western Washington Municipal Stormwater Permits 2019 Permit extension.

https://ecology.wa.gov/wwapermitextensionfaqs-pdf

WACA appeal 2016

WA Aggregates & Concrete Association appeal of Sand & Gravel General Permit in 2016

https://ecology.wa.gov/wacaappeal2016

2017 Annual Report for Wiegardt & Sons, Inc.

This annual report reviews Zostera Japonica controls on commercial clam beds in Willapa Bay for Wiegardt & Sons, Inc..

https://ecology.wa.gov/weigardt-3006-annual-report

2017 Annual Report for Willapa Bay Shellfish

2017 annual report for zostera japonica controls in Willapa Bay for Willapa Bay Shellfish.

https://ecology.wa.gov/willapa-3008-annual-report

2018 Pretreatment Plan Weigardt

Pretreatment plan for Zostera Japonica controls on commercial clam beds in Willapa Bay for Weigardt.

https://ecology.wa.gov/weigardt-2018-pretreatment-plan

2018 Pretreatment Plan for Willapa Bay Shellfish

Pretreatment plan for Zostera Japonica controls on commercial clam beds in Willapa Bay for Willapa Bay Shellfish.

https://ecology.wa.gov/willapa-2018-pretreatment-plan