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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2018 Draft Water Quality Assessment 4B Analyses

This is part of Ecology's submittal to EPA for the 2018 Water Quality Assessment.

https://ecology.wa.gov/2018-draft-wqa-4b-analyses

2018 Deschutes TMDL Cover Letter

This cover letter is included in the TMDL document to address the EPA decisions about this TMDL

https://ecology.wa.gov/2018-deschutes-tmdl-cover-letter

Determinations for Data and Information Submitted

This explains how Ecology used narrative data and information submitted for the 2018 Draft Water Quality Assessment

https://ecology.wa.gov/2018-draft-wqa-determinations-for-data-and-informa

Guidance for Public Review

This is a guide on how to review and comment on the draft Water Quality Assessment

https://ecology.wa.gov/2018-draft-wqa-guidance-for-public-review

2018 Modified Sand & Gravel General Permit

Sand & Gravel General Permit language modified 2018.

https://ecology.wa.gov/2018-modified-sand-gravel-general-permit

Response to comments 2018

This document is the response to public comment period held on the 2018 permit modification.

https://ecology.wa.gov/2018-response-to-comments

2018 EWA Formal Workshops Agenda

Agenda for the 2018 Formal Workshops and Public Hearings in Eastern WA

https://ecology.wa.gov/2018-ewa-formal-workshops-agenda

2018 WWA Formal Workshops Agenda

Agenda for the 2018 Formal Workshops and Hearings in Western WA

https://ecology.wa.gov/2018-wwa-formal-workshops-agenda

Comprehensive Planning Workshop Agenda

Agenda for the 2018 Comprehensive Stormwater Planning Workshop

https://ecology.wa.gov/20180913-comp-planning-agenda

Sept 13 2018 Comprehensive Planning Presentation

Presentation given at the Comprehensive Planning workshop in Tacoma, WA

https://ecology.wa.gov/2018-9-13-workshop-presentation

2018WAG993003AnnualRpt

2018 Z. Japonica Long Island Oyster Annual Report

https://ecology.wa.gov/2018wag993003annualrpt

2018WAG993004AnnualRpt

2018 Z. Japonica Station House Annual Report

https://ecology.wa.gov/2018wag993004annualrpt

2017 Pretreatment Plan

2017 Coast Seafood Z. japonica Pretreatment Plan

https://ecology.wa.gov/2017wag993011pretrtplan

Coast Pretreatment plan for 2018

Annual pretreatment plan for Zostera Japonica control on commercial clam beds in Willapa Bay.

https://ecology.wa.gov/2018-pretreatment-plan-for-coast

2017 Pretreatment Plan

2017 Herrold Fish Oyster Z. japonica Pretreatment Plan

https://ecology.wa.gov/2017wag993009pretrtplan

2017 Pretreatment Plan

2017 Heckes Clam Inc Z. japonica Pretreatment Plan

https://ecology.wa.gov/2017wag993010pretrtplan