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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General Order - Asphalt Plants

Amended general order for portable and stationary asphalt plants

https://ecology.wa.gov/10aq-go-01_amendment_1

Technical Support Document - Asphalt Plants

Technical support document for general order for portable and stationary asphalt plants

https://ecology.wa.gov/final_asphalt_plant_tsd

Technical Support Document (Amended) - Asphalt Plants

Amended technical support document for general order for portable and stationary asphalt plants

https://ecology.wa.gov/20110418asphaltplantstechsupport

General Order - Portable and Stationary Concrete Batch Plants

General order for portable and stationary concrete batch plants

https://ecology.wa.gov/signed_go_11aq-go-02_concrete_batch_plants

Technical Support Document - Concrete Batch Plants

Technical support document for portable and stationary concrete batch plants

https://ecology.wa.gov/portable-stationaryconcretebatchplantstsd

General Order - Portable and Stationary Rock Crushers

General order for portable and stationary rock crushers

https://ecology.wa.gov/signed_go_11aq-go-001_rock_crusher

Technical Support Document - Rock Crushers

Technical support document for general order for stationary and portable rock crushers

https://ecology.wa.gov/finaltsdstationary-portablerockcrushing

Technical Support Document - Dairy Manure Anaerobic Digesters

Technical support document for general order for dairy manure anaerobic digesters

https://ecology.wa.gov/final_tsd_12aq-go-01_digesters

General Order - Dairy Manure Anaerobic Digesters

General order for dairy manure anaerobic digesters

https://ecology.wa.gov/signed_12aq-go-01_digester

Pacific Aerospace & Electronics Notice of Construction (NOC) application

This is the air quality notice of construction application for Pacific Aerospace & Electronics in Wenatchee.

https://ecology.wa.gov/20240725pacificaerospacenocapp

Aquatic pesticide permits

Find information about the various aquatic pesticide permits used in our state.

https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits

Industrial facility permits and regulation

We regulate air, water, and waste for most of the large industrial facilities in Washington.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits

North Pacific Paper Corporation (NORPAC)

We regulate the water and hazardous waste activities at the NORPAC paper mill in Longview.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/norpac

ECY to Pend Oreille County regarding SEPA lead request

ECY response to Pend Oreille County Commissioners' letter requesting Ecology take the lead agency role in Environmental review of PacWest Silicon’s proposal

https://ecology.wa.gov/ecy-to-po-commissoners_lead-ag_july2018

Nippon Dynawave, Longview

We regulate the air, water, and hazardous waste activities at the Nippon Dynawave mill in Longview.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/nippon-dynawave-longview

WestRock, Longview

We regulate air, water, and hazardous waste at the WestRock mill in Longview.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/westrock-longview

Weyerhaeuser Lumber Mill, Longview

We regulate the water and hazardous waste activities at Weyerhaeuser's lumber mill in Longview.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/weyerhaeuser-lumber

Cosmo Specialty Fibers

We regulate air, water, and hazardous waste at Cosmo Specialty Fibers in Cosmopolis.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/cosmo-specialty-fibers

WestRock, Tacoma

We regulate air, water, and hazardous waste at RockTenn's WestRock pulp and paper mill in Tacoma.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/westrock-tacoma

Georgia Pacific, Camas

We regulate water, hazardous waste, and cleanup actions at the Georgia Pacific mill in Camas.

https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/georgia-pacific-camas