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Financial assurance updates
Cost estimates for financial assurance need to be adjusted every year for inflation.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dispose-recycle-or-treat/financial-assurance/updates
Dam operation & maintenance guidance
We provide guidance to assist dam owners with operations and maintenance.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dam-operation-maintenance-guidance
Henderson Inlet effectiveness monitoring
Our monitoring work in Henderson Inlet shows how local projects reduced fecal coliform in water.
https://ecology.wa.gov/research-data/monitoring-assessment/water-quality-improvement-effectiveness-monitoring/henderson-inlet
Railroad Creek monitoring
Our scientists are studying how mine remediation affects aquatic life uses along Railroad Creek.
https://ecology.wa.gov/research-data/monitoring-assessment/water-quality-improvement-effectiveness-monitoring/railroad-creek
Managing pharmaceutical waste
Learn how to manage waste pharmaceuticals properly to keep them out of the environment.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste
SEPA checklist guidance, Section B: Land & shoreline use
Guidance for Land & shoreline use in 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-8-land-shoreline-use
Treated wood waste
Treated wood waste contains toxic chemicals that your business may need to dispose of as dangerous waste.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/treated-wood-waste
Pharmaceutical waste management options for eligible facilities
Facilities that meet certain criteria can use pharmaceutical waste management options.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste/management-options
Spill management teams
Spill management teams are trained personnel who support spill responses.
https://ecology.wa.gov/regulations-permits/plans-policies/contingency-planning-for-oil-industry/spill-management-teams
Cannabis licensing and the environment
Environmental permits may be required for cannabis growers and processors.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-cannabis-businesses
SEPA checklist guidance, Section B: Animals
Guidance for Part B, Animals section for 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-5-animals
Watershed health — Puget Sound Region update
River and stream habitat in the Puget Sound Region shows variable conditions.
https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/habitat-monitoring/watershed-health/regional-reports/puget-sound
Whatcom County BEACH report
Learn about beaches sampled for bacteria levels in Whatcom County in the summer of 2024.
https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/whatcom-county
FAQ: Evaluate options to clean up homes and small businesses
These FAQs help homeowners and small businesses evaluate cleanup options and complete cleanup work.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/evaluation-cleanup-for-homeowners-small-busine
Underground Injection Control (UIC) program: Chapter 173-218 WAC
We regulate discharge of injection well fluids to protect against groundwater contamination.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/underground-injection-control-program
Water use compliance and enforcement
Enforcing water use laws reduces conflict among competing water users and protects the resource.
https://ecology.wa.gov/regulations-permits/compliance-enforcement/water-use-compliance
SeaPort Sound Terminal
We regulate water and hazardous waste activities at the SeaPort Sound Terminal in Tacoma.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/seaport-sound-terminal
Northwest Alloys, Longview
We regulate water, hazardous waste and cleanup activities at Northwest Alloys in Longview.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/northwest-alloys-longview
What to do if you spill oil or hazardous substances
Spills to water must be reported immediately to help reduce impacts to the environment.
https://ecology.wa.gov/regulations-permits/reporting-requirements/spills-if-you-spill
Aquatic Noxious Weed Control General Permit
We issue this general permit to manage freshwater and marine noxious weeds in Washington.
https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits/aquatic-noxious-weed-control
SEPA checklist guidance, Section B: Housing
Guidance for completing Housing section for Part B of the 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-9-housing
SEPA checklist guidance, Section B: Environmental Elements
Checklist guidance Part B Environmental Elements
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements
Watershed health — Upper Columbia update
River and stream habitat in the Snake River Region shows mostly good conditions.
https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/habitat-monitoring/watershed-health/regional-reports/upper-columbia
Coastal monitoring & analysis projects
Learn about coastal mapping and monitoring projects around Puget Sound and Pacific coast.
https://ecology.wa.gov/research-data/monitoring-assessment/coastal-monitoring-assessment/projects
Island County BEACH report
Learn about beaches sampled for bacteria levels in Island County in the summer of 2024.
https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/island-county
Emerging stormwater treatment technologies (TAPE)
We certify stormwater treatment technologies that have undergone Technology Assessment Protocol.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/stormwater-permittee-guidance-resources/emerging-stormwater-treatment-technologies
CLARC glossary
A glossary for terms and acronyms in CLARC's resource pages.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-cleanup-tools/clarc/glossary
Dental waste
Dental offices generate dangerous waste that must be disposed of properly.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/dentists
Small cosmetics manufacturer certification subsidy program
Small cosmetics manufacturers can apply for financial support to reformulate and certify their products.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/safer-alternatives/safer-chemicals-for-manufacturers/cosmetics-certification-subsidy-program
Stormwater Action Monitoring - Effectiveness studies
Learning what works best to reduce urban runoff volumes and pollution in Western Washington.
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies
Puget Small Streams study
Stormwater Action Monitoring's (SAM) receiving waters study on Puget Sound's small streams.
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-status-and-trends/puget-small-streams
Fish consumption rate: Technical support document
This 2013 technical support document estimates how much fish Washington residents are eating.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/fish-consumption-rates-technical-support
Pierce County BEACH report
Learn about beaches sampled for bacteria levels in Pierce County in the summer of 2024.
https://ecology.wa.gov/research-data/monitoring-assessment/beach-annual-report/pierce-county
WestRock, Tacoma
We regulate water, hazardous waste and cleanup at RockTenn's WestRock pulp and paper mill in Tacoma.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/westrock-tacoma
Goldendale Energy Storage Project
Environmental review and permitting for the proposed Goldendale Energy Storage Project.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/goldendale-energy
Freshwater fish contaminant monitoring
We analyze freshwater fish for various toxic chemicals.
https://ecology.wa.gov/research-data/monitoring-assessment/toxics-monitoring/freshwater-fish-contaminant-monitoring
Yakima Railroad Area groundwater performance monitoring
We're monitoring legacy pollution in central Yakima and Union Gap to measure cleanup effectiveness.
https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index/yakima-rail
​Shoalwater Bay berm monitoring
We monitored the Willapa Bay shoreline to assess how a flood-protection berm changed over time.
https://ecology.wa.gov/research-data/monitoring-assessment/coastal-monitoring-assessment/projects/shoalwater-bay-berm-monitoring
Sulfur dioxide air quality designations
We’re deciding if parts of Washington don't meet national air quality standards for sulfur dioxide.
https://ecology.wa.gov/regulations-permits/plans-policies/areas-meeting-and-not-meeting-air-standards/sulfur-dioxide-designations
Primary response contractors for spill cleanup
We approve primary response contractors to allow them to be cited in industry oil plans.
https://ecology.wa.gov/regulations-permits/plans-policies/contingency-planning-for-oil-industry/primary-response-contractors
Safer products for businesses
Learn how your business can find and purchase less toxic chemicals and products.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/safer-alternatives/safer-products-for-businesses
Cleanup Levels and Risk Calculation (CLARC)
CLARC's resources help you set contaminated site cleanup levels that comply with Washington law.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-cleanup-tools/clarc
SEPA Supplemental Orca Checklist Guidance
This guidance helps applicants complete the SEPA Supplemental Orca Checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-supplemental-orca-checklist-guidanc
Choosing an analytical laboratory
Take these steps and consider what you need when choosing an environmental laboratory.
https://ecology.wa.gov/regulations-permits/permits-certifications/laboratory-accreditation/how-to-choose-an-analytical-laboratory
Eagle US 2, Longview
We regulate water and hazardous waste at the Axiall Corporation's Eagle US 2 plant in Longview.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/eagle-us-2-llc
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
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
Port Townsend Paper
We regulate air, water, and hazardous waste at the Port Townsend Paper Corp. pulp and paper mill
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/port-townsend-paper
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
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