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Air quality permits
Permits for industrial air pollution and burning activities.
https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits
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
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
Watershed health — Mid-Columbia update
River and stream habitat in the Mid-Columbia Region shows slight improvement.
https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/habitat-monitoring/watershed-health/regional-reports/mid-columbia
Lake water quality monitoring & protection
Working with partners, we compile data on algae, invasive plants, and some toxic chemicals in lakes.
https://ecology.wa.gov/research-data/monitoring-assessment/lake-water-quality
River and stream monitoring
Our freshwater data helps us to assure clean and abundant water to support human and aquatic life.
https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring
Jefferson County BEACH report
Learn about beaches sampled for bacteria levels in Jefferson County in the summer of 2024.
https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/jefferson-county
Mason County BEACH report
Learn about beaches sampled for bacteria levels in Mason County in the summer of 2024.
https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/mason-county
Skagit County BEACH report
Learn about beaches sampled for bacteria levels in Skagit County in the summer of 2024.
https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/skagit-county
Thurston County BEACH report
Learn about beaches sampled for bacteria levels in Thurston County in the summer of 2024.
https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/thurston-county
SEPA checklist guidance, Section B: Air
SEPA Guidance for Environmental Checklist
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-air
SEPA checklist guidance
We provide information about each SEPA checklist question.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance
Aquatic Species Restoration Plan Research and Studies
The ASRP is a science-based plan to restore and enhance aquatic species habitat in the Chahalis Basin.
https://ecology.wa.gov/research-data/scientific-reports/asrp-research
Pollution prevention assistance (PPA)
Businesses can get free, non-regulatory pollution prevention help from local PPA specialists.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/pollution-prevention-services/pollution-prevention-assistance
Nicotine and cannabis waste
Learn how your business can properly handle nicotine, vape, and cannabis waste.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/nicotine-and-cannabis-waste
Pharmaceutical waste codes
Find common waste codes for pharmaceutical waste.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste/rcra-waste-codes
Aquatic Mosquito Control General Permit
This permit allows the use of insecticides to control mosquitoes.
https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/aquatic-mosquito-control
Contained-in policy for contaminated soil and groundwater
Learn how to reduce cleanup costs by requesting approval under our contained-in policy.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contained-in-determinations
SEPA checklist guidance, Section B: Transportation
Guidance for Transportation section for Part B of SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-14-transportation
Meet our team
Businesses can contact our team for non-enforcement pollution prevention (P2) technical assistance.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/pollution-prevention-services/toxics-reduction-assistance/meet-our-team
Combined sewer overflows
We're working to control combined sewer overflows to keep water clean.
https://ecology.wa.gov/regulations-permits/permits-certifications/combined-sewer-overflows
Sand & Gravel General Permit history
Find historical information about our Sand and Gravel General Permit.
https://ecology.wa.gov/regulations-permits/permits-certifications/sand-gravel-general-permit/sand-gravel-general-permit-history
State Solid and Hazardous Waste Plan
Washington state’s management plan for solid waste and toxic materials.
https://ecology.wa.gov/regulations-permits/plans-policies/washington-state-waste-plan
Regulating facilities that handle mixed waste in Washington State
Ecology regulates low-level mixed waste facilities in Washington.
https://ecology.wa.gov/regulations-permits/permits-certifications/radioactive-mixed-waste-permits
Active groundwater studies
We conduct groundwater studies for long- and short-term projects. Learn about our active studies.
https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index
Black Lake Grocery groundwater monitoring
We monitor groundwater for petroleum hydrocarbons at the Black Lake Grocery site.
https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index/black-lake-grocery
Plaza Cleaners groundwater monitoring
We monitor groundwater for volatile organic compounds at the Plaza Cleaners Lakewood site.
https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index/lakewood-cleaners
Marine water & sediment monitoring
We conduct water and sediment long-term monitoring to identify ecosystem changes.
https://ecology.wa.gov/research-data/monitoring-assessment/puget-sound-and-marine-monitoring
Automotive recyclers
Auto recyclers deal with toxic materials. Learn best practices and ways to manage these materials.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/auto-recyclers
PCBs in building materials
Learn about possible sources of polychlorinated biphenyls (PCBs) in building materials.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/construction-and-demolition/pcbs-in-buildings
Plastic producer registration and reporting
Producers of certain items sold in plastic packaging in Washington must annually register with us.
https://ecology.wa.gov/regulations-permits/reporting-requirements/plastic-producer-registration
Cleaning up contamination with model remedies
Model remedies are ways to clean up routine, low-risk contaminated sites under MTCA.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/mtca-model-remedies
SEPA checklist guidance, Section B: Energy & natural resources
Guidance for Energy & natural resources section for Part B, SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-6-energy-natural-resou
SEPA checklist guidance, Section B: Public services
Guidance for completing Public Services section of Part B of SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-15-public-services
Mercury in fish tissue
We monitor mercury levels in freshwater fish throughout Washington.
https://ecology.wa.gov/research-data/monitoring-assessment/toxics-monitoring/mercury-in-fish-tissue
Forest practices effectiveness monitoring
We evaluate whether forest practices rules protect fish, wildlife, and water quality.
https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/habitat-monitoring/forest-practices-effectiveness-monitoring
Air quality studies
Information about air quality studies we conduct.
https://ecology.wa.gov/research-data/scientific-reports/air-quality-studies
CLARC guidance
Use these guidance documents in combination with CLARC to establish cleanup levels.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-cleanup-tools/clarc/guidance
Burrowing shrimp control
We work with the IPM group to find solutions to control burrowing shrimp in Willapa Bay & Grays Harbor.
https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/burrowing-shrimp-control
SEPA Guidance for Nonproject proposals
Completing SEPA review for "nonproject" proposals.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/non-project-proposals
SEPA Review and Commenting Guidance
SEPA guidance for document reviewers.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/review-commenting
Improving ditches & maintenance
Stormwater Action Monitoring effectiveness study: roadside ditch performance and maintenance
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/improving-ditches-maintenance
Seismic measures for Class 1 Facilities
We amended WAC 173-180-330 and 173-180-340 in June 2023.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-oil-industry/facilities-seismic-measures
Fertilizers
Learn how your business can register, manage, and dispose of fertilizers properly.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/fertilizers
Bioretention effectiveness for 6PPD and PFAS
Treatment Effectiveness of Stormwater Facility with HPBSM for Toxic Chemicals
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/bioretention-effectiveness-for-6ppd-and-pfas
Longevity of biological protection using bioretention
Study about the effectiveness of bioretention soil retaining pollution over time.
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/longevity-biological-protection-using-bioretention
Agrium Kennewick Fertilizer Operations
We regulate water and hazardous waste for Agrium Kennewick Fertilizer Operations facilities.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/agrium-kennewick-fertilizer-operations
Air Liquide Hydrogen Plant, Anacortes
We regulate water and hazardous waste activities at the Air Liquide hydrogen plant in Anacortes.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/air-liquide
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
HF Sinclair Puget Sound Refinery
We regulate water and hazardous waste activities at the HF Sinclair Puget Sound Refinery in Anacortes.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/hf-sinclair-puget-sound-refinery
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