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.
Western Washington Phase II Municipal Stormwater Permit
Permit regulates stormwater discharges in the 2nd-most highly populated areas in Western Washington.
https://ecology.wa.gov/regulations-permits/permits-certifications/stormwater-general-permits/municipal-stormwater-general-permits/western-washington-phase-ii-municipal-stormwater
Municipal stormwater permit history
We document the development of municipal stormwater permits in Washington.
https://ecology.wa.gov/regulations-permits/permits-certifications/stormwater-general-permits/municipal-stormwater-general-permits/municipal-stormwater-permit-history
Washington Department of Transportation Municipal Stormwater Permit
Permit covers discharges from state highways and other WSDOT transportation-related facilities.
https://ecology.wa.gov/regulations-permits/permits-certifications/stormwater-general-permits/municipal-stormwater-general-permits/wsdot-municipal-stormwater-permit
Evaluation of Best Management Practices Maintenance Conditions
Study evaluating the maintenance thresholds for select best management practices for stormwater.
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/bmp-maintenance-conditions
Bonneville Power Administration TSD permit (PDF)
A permit issued in 2011 allowing the Bonneville Power Administration to treat, store and dispose of dangerous waste.
https://ecology.wa.gov/bonneville-power-administration-tsd-permit
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
7Q10 for High Flows on the Columbia/Snake Rivers
Guidelines for arriving at 7Q10 for dissolved gas standards.
https://ecology.wa.gov/7q10forhighflows
Air Operating Permit Report for Fiscal Years 2022 and 2023, updated November 2021
This is the workload analysis and budget report for the Air Operating Permit Program for Fiscal Years 2022 and 2023, updated November 2021.
https://ecology.wa.gov/202111aopreportfy22
Field Nutrient Budget Template
Template for submitting CAFO annual reports
https://ecology.wa.gov/field-nutrient-budget-template
Boatyard General Permit
This permit protects marine waters from toxics that can get into stormwater runoff from boatyards.
https://ecology.wa.gov/regulations-permits/permits-certifications/boatyard-general-permit
Concentrated Animal Feeding Operation General Permit
Permit for operations with large numbers of livestock for long periods of time.
https://ecology.wa.gov/regulations-permits/permits-certifications/concentrated-animal-feeding-operation
Stormwater monitoring
Stormwater monitoring helps us know how well water quality permits are working.
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring
Mineral prospecting and placer mining
Information from Ecology and WDFW about mineral prospecting and placer mining, and ESHB 1261.
https://ecology.wa.gov/regulations-permits/permits-certifications/mineral-prospecting-and-placer-mining
401 Water Quality Certifications for non-hydropower permits
We review projects needing federal approval to assure compliance with state water quality standards.
https://ecology.wa.gov/regulations-permits/permits-certifications/401-water-quality-certification/non-hydropower-401-certifications
Alcoa Wenatchee
We regulate the water and hazardous waste at Alcoa's Wenatchee aluminum smelter in Malaga.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/alcoa-wenatchee
BP Refinery
We regulate water, hazardous waste, and cleanup activities at the BP Cherry Point Refinery in Blaine.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/bp-refinery
Shellfish aquaculture 401 certification
We modified our certification process for shellfish growers because of new federal requirements.
https://ecology.wa.gov/regulations-permits/permits-certifications/401-water-quality-certification/shellfish-aquaculture
Columbia & Cowlitz Railway
We regulate the water and hazardous waste activities at the Columbia & Cowlitz Railway in Longview.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/columbia-cowlitz-railway
Underground storage tank service providers
Information for underground storage tank (UST) service providers and for those looking to find one.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/ust-owner-and-operator-resources/underground-storage-tank-service-providers
Underground storage tank operator certification
Learn how to get the required underground storage tank operator certification.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/ust-owner-and-operator-resources/underground-storage-tank-operator-certification
185 results
101 - 120 of 185