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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Workshop Agenda Nov. 14

Agenda for the Nov. 14 Workshop on PCB Variances for Spokane River Dischargers

https://ecology.wa.gov/workshop-agenda-nov-14

ZEV Credit Options (WAC 173-423) 04/2022

This is an April 2022 evaluation of credit options for the zero emission vehicles (ZEV) market in Washington.

https://ecology.wa.gov/zev-credit-options-wac-173-423-04-2022

ZEV Credit Options (WAC 173-423) 02/2022

This is an evaluation of credit options for the zero emission vehicles (ZEV) market in Washington.

https://ecology.wa.gov/zev-credit-options-wac-173-423-02-2022

WSPA proposal (WAC 173-400) 01/01/19

This is Western States Petroleum Association's (WSPA) 1/19 proposed rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/wspa-proposal-wac-173-400-01-01-19

Comments from the July 12, 2016, public hearing (written) (WAC 173-442; WAC 173-441) 7/12/16

Written comments from the July 12, 2016, public hearing.

https://ecology.wa.gov/written-comments-from-the-july-12-2016-public-hea

Written comments from the July 14, 2016, public hearing in Olympia (WAC 173-442; WAC 173-441)

Written comments from the July 14, 2016, public hearing.

https://ecology.wa.gov/written-comments-from-the-july-14-2016-public-hea

WSR 22-19-037

This is the CR-101 rescinded notice for WAC 173-305.

https://ecology.wa.gov/wsr-22-19-037

Workshop #8 Slides_Tribal workshop

Slides for Workshop #8_Tribal workshop

https://ecology.wa.gov/workshop-8-slides_tribal-workshop

Workshop #9 Slides

Slides for Workshop #9

https://ecology.wa.gov/workshop-9-slides

Noise pollution — Frequently asked questions for residents

Do you have questions about noise pollution? Find some common questions and answers.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/noise-pollution/noise-pollution-faq-for-residents

Noise pollution — Frequently asked questions for local governments

Do you have questions about noise pollution? Find some common questions and answers for governments.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/noise-pollution/noise-pollution-faq-for-local-government

Chapter 173-201A WAC (Variances)

This is a rulemaking page for Chapter 173-201A WAC for variances in Spokane River.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac173-201a-variances

Chapter 173-305 WAC

This is the rulemaking page for Chapter 173-305 WAC

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-305

Chapter 173-331 WAC

This is the rulemaking page for Chapter 173-331 WAC, Vehicle Battery Recycling.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-331-dec15

Chapter 173-333 WAC

This is the rulemaking page for Chapter 173-333 WAC, Chemical Action Plans.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-333-oct15

Exploratory rulemaking for Chapter 173-460 WAC – Controls for New Sources of Toxic Air Pollutants

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

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-460-exploratory-rulemaking

Chapters 173-400 and 173-401 WAC, General Regulations for Air Pollution Sources

This is the rulemaking page for Chapters 173-400 and 173-401 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-400-401-air-pollution-sources

WAC 173-166 Emergency drought relief

This is the rulemaking page for Chapter 173-166 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-166

Chapter 173-424 WAC – Clean Fuels Program

This is the rulemaking page for Chapter 173-424 WAC – Clean Fuels Program

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-424

Chapter 173-905 WAC - Battery Stewardship Program

This is the rulemaking page for Chapter 173-905 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-905