Research & Data

Use this portal to filter and search for all of our scientific information.

Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.

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Kitsap County resolution of adoption

A sample resolution from Kitsap County adopting the county's solid and hazardous waste management plan

https://ecology.wa.gov/kitsap-county-resolution-of-adoption-sample

List of Businesses Participating in Product Replacement Programs

List of businesses participating in our product replacement programs.

https://ecology.wa.gov/prp-businesses

PCBs in building materials

Learn which building materials could contain PCBs.

https://ecology.wa.gov/interactive-doc-pcbs-in-building-materials

Certificate of compliance 2023

Manufacturers that produce food packaging sold in Washington must fill out a Certificate of Compliance to show they meet the PFAS in food packaging rules

https://ecology.wa.gov/certificate-of-compliance-2023

Rulemaking Announcement WAC 173-331 12/02/15

This is a rulemaking announcement (CR-101) for WAC 173-331 Vehicle Battery Recycling

https://ecology.wa.gov/rulemaking-announcement-wac-173-331-12-02-15

Preliminary Draft Revised WAC 173-331 12/02/15

This is a preliminary draft of the rule that stakeholders were asked to comment on

https://ecology.wa.gov/rulemaking-announcement-wac-173-331-12-02-15-1

Citation List (WAC 173-350) 01/23/18

This is the preliminary citation list for proposed revisions to chapter 173-350 WAC - 01/23/18

https://ecology.wa.gov/citation-list-wac-173-350-01-23-18

Guidance on enforcement of lead, cadmium, and phthalate limits

Guidance on enforcement of lead, cadmium, and phthalate limits for the Children's Safe Product Act

https://ecology.wa.gov/guidance-on-enforcement-of-lead-cadmium-and-phth

SEPA Checklist and DNS (WAC 173-350) 01/23/18

This is the environmental checklist and determination of nonsignificance for proposed rulemaking on WAC 173-350 - 01/23/18

https://ecology.wa.gov/sepa-checklist-and-dns-wac-173-350-01-23-18

Pollution Prevention Planning Hazardous Substances List

Refer to this chemical list when doing your pollution prevention plan. Updated on May 19, 2017.

https://ecology.wa.gov/washington-state-pollution-prevention-planning-haz

Rulemaking Adoption Notice (WAC 173-337) 05/31/23

This is a rulemaking adoption (CR-103) for WAC 173-337 Safer Products Restrictions and Reporting

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-337

Pharmaceutical waste regulations webinar

PDF version of the Pharmaceutical Waste Regulations webinar conducted by Ecology's health care team January 2021

https://ecology.wa.gov/webinar-pharmawaste-slides-2021

PCB pathways in building materials

Text version of PCB pathways in building materials.

https://ecology.wa.gov/interactive-doc-pcb-pathways

WSR 23-19-066 Commerical airport restrictions

WSR 23-19-066 requires commercial airports in Washington procure non-PFAS firefighting agents by 2025.

https://ecology.wa.gov/wsr-23-19-066

Rulemaking Announcement (WAC 173-337) 12/08/23

This is a rulemaking announcement (CR-101) for WAC 173-337 Safer Products Restrictions and Reporting.

https://ecology.wa.gov/rulemaking-announcement-wac-173-337-12-06-23

PCB petition to EPA

Letter from Ecology to the EPA petitioning to reduce allowable PCBs in consumer products.

https://ecology.wa.gov/pcb-petition-to-epa

Aug 14 webinar slides

This is the presentation for the Cycle 1.5 webinar conducted on Aug. 14, 2024

https://ecology.wa.gov/webinar-presentation-aug-14

Certificate of compliance: PFAS in food packaging 2024

This is the certificate of compliance for food packaging manufacturers for items regulated as of May 2024.

https://ecology.wa.gov/certificate-of-compliance-2024

SPWA Sept 25 webinar materials

This is the PowerPoint presentation for the webinar conducted on Sept. 25, 2024 for WAC 173-339.

https://ecology.wa.gov/sept-25-webinar-materials

Pacific Functional Fluids LLC Tacoma

Cleanup site in the Tacoma Tide Flats industrial area, focused on removing contaminents from the soil and groundwater.

https://ecology.wa.gov/cleanup-site-pacific-functional-fluids-llc-tacoma