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...

Chapter 173-446A WAC

This is the rulemaking page for Chapter 173-446A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446a

Chapter 173-446B WAC – Climate Commitment Act Funds Reporting

This is the rulemaking page for Chapter 173-446B WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446b

Chapters 173-491, 173-400, 173-455 WAC – Emission Standards and Controls for Sources Emitting Gasoline Vapors

This rulemaking was withdrawn August 19, 2021 regarding WAC 173-491, WAC 173-400 and WAC 173-455.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-491-jul13

Chapter 173-455 WAC – Air Quality Fee Rule

This is the rulemaking page for Chapter 173-455 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-455

Chapter 173-501 WAC

On May 27, 2020, Ecology adopted amendments to Chapter 173-501 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-501

Chapter 197-11 WAC (SEPA rules – expedited rulemaking)

This is the Rulemaking page for Chapter 197-11 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-197-11-sepa-rules

Chapter 173-167 WAC Emergency Drought Funding (2023)

This is the rulemaking page for Chapter 173-167 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-167-2023

Chapter 173-446 WAC – Allowance Price Containment Reserve

This is the rulemaking page for Chapter 173-446 WAC, Allowance Price Containment Reserve.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-446-apcr

Chapter 173-201A WAC (Natural Conditions)

This is the rulemaking page for Chapter 173-201A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-201a-natural-conditions

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

Chapters 173-441 and 173-446 WAC – Electricity Markets

This is the rulemaking page for Chapter 173-441 WAC and Chapter 173-446 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-441-446

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

Chapter 173-503A WAC

This is the rulemaking page for Chapter 173-503A WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-503a-feb15

Chapter 173-525 WAC

This is the rulemaking page for Chapter 173-525 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-525-mar05

Chapter 173-526 WAC

This is the rulemaking page for Chapter 173-526 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-526-mar05

Chapter 173-446 WAC – Cap-and-Invest Offsets

This is the rulemaking page for Chapter 173-446 WAC.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-446-offsets

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