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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Updating the Air Toxics Rule (WAC 173-460)

This is the overview of rulemaking for WAC 173-460, Controls for New Sources of Toxic Air Pollutants,

https://ecology.wa.gov/updating-the-air-toxics-rule

Rulemaking Announcement CR-101

Rulemaking Announcement for 173-333 WAC Chemical Action Plans.

https://ecology.wa.gov/rulemaking-announcement-cr-101

Rulemaking Adoption Notice (WAC 173-910) 08/23/16

This is a rulemaking adoption (CR-103) for WAC 173-910 Mecury-Containing Lights Product Stewardship Program.

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-910-08-24-16

Rulemaking Announcement (WAC 173-910) 07/22/15

This is a rulemaking announcement (CR-101) for WAC 173-910 Mercury-Containing Lights Product Stewardship Program

https://ecology.wa.gov/rulemaking-announcement-wac-173-910-07-22-15

Rulemaking Proposal (WAC 173-910) 03/10/16

This is a rulemaking proposal (CR-102) for WAC 173-910 Mercury-Containing Lights Product Stewardship Program.

https://ecology.wa.gov/rulemaking-proposal-wac-173-910-03-10-16

Rulemaking proposed language (WAC 173-910) 03/10/16

This is proposed rule language for WAC 173-910 Mercury Containing Lights product Stewardship Program.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-910-03-10-1

Rulemaking Proposal (WAC 173-186) 6/5/19

This is a rulemaking proposal (CR-102) for WAC 173-186 Oil Spill Contingency Plan - Railroad.

https://ecology.wa.gov/rulemaking-proposal-wac-173-186-6-5-19

Response to Comments: Modification of RCRA WTP Lab Operations

Response to Comments: Modification of the Hanford Facility Resource Conservation and Recovery Act Permit for the Treatment, Storage, and Disposal of Dangerous Waste, Part III, Operating Unit Group 10 (WA7890008967) Waste Treatment and Immobilization Plant Analytical Laboratory Operations, 24590-LAB-PCN-ENV-16-002

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

Rulemaking Proposal Language (WAC 173-186) 6/5/19

This is proposed rule language for WAC 173-186 Oil Spill Contingency Plan - Railroad 6/5/19.

https://ecology.wa.gov/rulemaking-proposal-language-wac-173-186-6-5-19

SEPA - Determination of Non-Significance (WAC 173-910) 03/10/16

This is the SEPA Determination of Non-significants (DNS) for the rulemaking for WAC 173-910 Mercury-Containing Lights Product Stewardship Program.

https://ecology.wa.gov/sepa-determination-of-non-significance-wac-173

Rulemaking Announcement (WAC 173-460) 07/18/18

This is a rulemaking announcement (CR-101) for WAC 173-460, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/rulemaking-announcement-wac-173-460-07-18-18

Rulemaking Adoption Notice (WAC 173-337) 05/31/23

This is a rulemaking adoption (CR-103) for WAC 173-337 Safer Products Restrictions and Reporting

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-337

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

WSR 23-19-066 Commerical airport restrictions

WSR 23-19-066 requires commercial airports in Washington procure non-PFAS firefighting agents by 2025.

https://ecology.wa.gov/wsr-23-19-066

Rulemaking Announcement (WAC 173-337) 12/08/23

This is a rulemaking announcement (CR-101) for WAC 173-337 Safer Products Restrictions and Reporting.

https://ecology.wa.gov/rulemaking-announcement-wac-173-337-12-06-23

Aug 14 webinar slides

This is the presentation for the Cycle 1.5 webinar conducted on Aug. 14, 2024

https://ecology.wa.gov/webinar-presentation-aug-14

SEPA determination of nonsignificance

This document is a determination of nonsignificance (DNS) in which Ecology has determined the proposed biosolids general permit will not have a probable significant adverse impact on the environment.

https://ecology.wa.gov/sepa-determination-of-nonsignificance-26201b433614b0478c7dbc8114f0a4ba

SPWA Sept 25 webinar materials

This is the PowerPoint presentation for the webinar conducted on Sept. 25, 2024 for WAC 173-339.

https://ecology.wa.gov/sept-25-webinar-materials

Children's Safe Products Act reporting

Learn more about how to submit reports under Washington's Children's Safe Products Act (CSPA).

https://ecology.wa.gov/regulations-permits/reporting-requirements/childrens-safe-products-act-reporting

Irrigation System Aquatic Weed Control permit

This permit regulates the use of pesticides to manage plant and algae growth in irrigation systems.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/irrigation-system-aquatic-weed-control