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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Rulemaking Announcement WAC 173-331 12/02/15

This is a rulemaking announcement (CR-101) for WAC 173-331 Vehicle Battery Recycling

https://ecology.wa.gov/rulemaking-announcement-wac-173-331-12-02-15

Legal authorities

Summary of local, state and federal legal authorities for commercial fish farms

https://ecology.wa.gov/legal-authorities

2023-GHGreport-Instructions

Instructions for completing your 2023 GHG report

https://ecology.wa.gov/2023-state-agency-ghg-report-instructions

TDG Draft EIS and Short-term Modification Language February 2019 Hearing Presentations

This is a PDF of the PowerPoint presentations provided at the February 2019 hearings on the draft EIS and short-term modification language for total dissolved gas criteria in WAC 173-201A.

https://ecology.wa.gov/tdg-draft-eis-and-short-term-modification-language

Summary of changes

Summary of changes being made to the 2019 general permit

https://ecology.wa.gov/ffp-permit-modification-summary-of-changes

Rulemaking Announcement (WAC 173-55) 06/21/23

This is a rulemaking announcement (CR-101) for WAC 173-55 Accreditation of Cannabis Laboratories.

https://ecology.wa.gov/rulemaking-announcement-wac-173-55-06-21-23

Rulemaking Announcement (WAC 173-50) 10/10/22

This is a rulemaking announcement (CR-101) for WAC 173-50 Accreditation of Environmental Laboratories.

https://ecology.wa.gov/rulemaking-announcement-wac-173-50-10-10-22

Continued Response Actions to Partial Collapse of PUREX Tunnel 1

Due to the continued immediate threat to human health and the environment posed by the instability of PUREX Tunnel 1, Ecology approves grouting of PUREX Tunnel 1 as an interim stabilization measure.

https://ecology.wa.gov/20170608purexgroutresponse

Amended Administrative Order Docket #15419 amending Order Docket #14156

This amended order adds PUREX Tunnel 2 to the scope of Corrective Action 3 and provides additional time for USDOE-RL and CHPRC to complete Corrective Action 3.

https://ecology.wa.gov/20170915purexamendedorder

Modified Permit draft

2019 modified general permit - draft version open for comment

https://ecology.wa.gov/ffpmodifiedpermit

Pharmaceutical waste regulations webinar

PDF version of the Pharmaceutical Waste Regulations webinar conducted by Ecology's health care team January 2021

https://ecology.wa.gov/webinar-pharmawaste-slides-2021

Updated Preliminary Draft Rulemaking Language WAC 173-55

This Preliminary Draft Rulemaking Language for WAC 173-55 is from November 2023.

https://ecology.wa.gov/updated-preliminary-draft-rulemaking-language-wac-173-55

Managing pharmaceutical waste

Learn how to manage waste pharmaceuticals properly to keep them out of the environment.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste

Pharmaceutical waste management options for eligible facilities

Facilities that meet certain criteria can use pharmaceutical waste management options.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste/management-options

Frequently asked questions about pharmaceutical waste

Frequently asked questions about pharmaceutical waste and our answers.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste/frequently-asked-questions

Chapter 173-925 WAC

This is the rulemaking page for Chapter 173-925 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-925

Policies and guidance for site cleanups

Policies and guidance interpret the MTCA cleanup law and help you clean up contaminated sites.

https://ecology.wa.gov/regulations-permits/plans-policies/toxics-cleanup-policies

Empirical demonstrations under MTCA

Empirical demonstrations can show that applicable groundwater cleanup levels aren’t being exceeded.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/empirical-demonstrations-mtca

Dangerous waste permits

Facilities that store, treat, or dispose of dangerous waste must have a dangerous waste permit.

https://ecology.wa.gov/regulations-permits/permits-certifications/dangerous-waste-permits

SEPA checklist guidance, Section B: Transportation

Guidance for Transportation section for Part B of SEPA environmental checklist.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-14-transportation