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.

See more about this collection...

Proposed Rule Text without Tracked Changes (WAC 173-340) 02/15/23

This document displays WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations, as if the proposed rule changes were adopted. This document does not track or footnote the changes.

https://ecology.wa.gov/proposed-rule-text-with-no-tracked-changes-to-curr

Proposed rule repeal language (WAC 173-442) 03-22-23

This is the proposed rule repeal language for Chapter 173-442 WAC, Clean Air Rule.

https://ecology.wa.gov/proposed-rule-repeal-language-wac-173-442-01-23-23

Proposed Rule Text with Tracked and Footnoted Changes (WAC 173-340) 02/15/23

This document tracks and footnotes proposed changes to WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations.

https://ecology.wa.gov/proposed-rule-text-with-tracked-and-footnoted-chan

Proposed rule language (WAC 173-501) 11/19/2019

This is proposed rule language for WAC 173-501 Instream Resources Protection Program - Nooksack Water Resource Inventory Area (WRIA) 1

https://ecology.wa.gov/proposed-rule-language-173-501

Proposed rulemaking (WAC 173-501) 11/19/2019

This is the proposed rulemaking announcement (CR-102) Chapter 173-501 Instream Resources Protection Program - Nooksack Water Resource Inventory Area (WRIA) 1

https://ecology.wa.gov/proposed-rulemaking-cr-102-wac-173-501

Public Hearing Presenation Slides (WAC 173-340) 02/15/23

This presentation provides an overview of the proposed changes to current WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations

https://ecology.wa.gov/public-hearing-presentation-slides-chapter-173-340

Public Comment Matrix (WAC 173-219) Sept. 21, 2015

Spreadsheet of public comments for the Reclaimed Water rulemaking from Sept. 21, 2015.

https://ecology.wa.gov/public-comment-matrix-wac-173-219-09-21-15

RAC Agenda (WAC 173-219) 02/16/17

Reclaimed Water Rule Making Advisory Committee (RAC) - February 16, 2017 Meeting Agenda

https://ecology.wa.gov/rac-agenda-wac-173-219-02-16-17

RAC Agenda (WAC 173-219) 03/28/17

Reclaimed Water Rule Making Advisory Committee (RAC) - March 28, 2017 Meeting Agenda

https://ecology.wa.gov/rac-agenda-wac-173-219-03-28-17

RAC Agenda (WAC 173-219) March 31, 2015

Reclaimed Water Rule Making Advisory Committee (RAC) - March 31, 2015 Meeting Agenda

https://ecology.wa.gov/rac-agenda-wac-173-219-03-31-15

RAC Agenda (WAC 173-219) 11/03/14

Reclaimed Water Rulemaking Advisory Committee (RAC) Meeting Agenda - November 3, 2014

https://ecology.wa.gov/rac-agenda-wac-173-219-11-03-14

RAC Agenda (WAC173-219) 03/28/17

Reclaimed Water Rule Making Advisory Committee (RAC) - March 28, 2017 Meeting Agenda

https://ecology.wa.gov/rac-agenda-wac173-219-03-28-17

RAC Meeting Notes (WAC 173-219) 03/31/15

Reclaimed Water Rulemaking Advisory Committee (RAC) Meeting Notes - March 31, 2015

https://ecology.wa.gov/rac-meeting-notes-wac-173-219-03-31-15

Public hearing presentation (WAC 173-360; 173-360A) 02/28/18

This is the presentation provided at the public hearings on the rulemaking proposal for the underground storage tank regulations (WAC 173-360; 173-360A). The hearings occurred on February 28, 2018 and March 2, 2018.

https://ecology.wa.gov/public-hearing-presentation-wac-173-360;-173-360a

Public hearing presentation (March 13, 2018)

This is the presentation for the proposed changes to Chapters 173-400 and 173-401 WAC.

https://ecology.wa.gov/public-hearing-presentation-wac-173-400;401-03-1

Public information session agenda

Public information session agenda for BPC tug Escort Rulemaking

https://ecology.wa.gov/public-information-session-agenda

Proposed Source Test Manual (WAC 173-400; WAC 173-401) 9-18-24

This is the proposed Source Test Manual, September 18, 2024.

https://ecology.wa.gov/proposed-source-test-manual-wac-173-400;-wac-173-401-9-18-24

Shoreline Management Act Rulemaking Public listening session

Slides from our Sept. 23 Listening session

https://ecology.wa.gov/public-listening-session

Questions (WAC 173-441, 446) 11-19-24

Questions from participants of the Nov. 19, 2024, linkage rulemaking info session

https://ecology.wa.gov/questions-wac-173-441-446-11-19-24

Clean Vehicles Program Rulemaking Public Info Session Dec. 10 2024

Slideshow presentation

https://ecology.wa.gov/clean-vehicles-program-rulemaking-public-information-session