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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DRAFT Chapter 173-339 WAC Cosmetic Products Restrictions

This is the draft rule language for Chapter 173-339 WAC Cosmetic Products Restrictions.

https://ecology.wa.gov/draft-chapter-173-339-wac-cosmetic-products-restrictions-07-24

AFFF EIS interactive plain text

This is the plain text version of the interactive AFFF environmental impact statement (EIS).

https://ecology.wa.gov/afff-eis-plain-text

PFAS information from the Department of Health

The Washington State Department of Health has information on PFAS health concerns, PFAS in drinking water, and limiting exposure.

https://ecology.wa.gov/doh-pfas

Resources: 6PPD informational materials and resource links

Access more information about 6PPD and find 6PPD-quinone resources.

https://ecology.wa.gov/resources-6ppd-informational-materials-and-resource-links

Email list: Toxic-Free Cosmetics Act

https://ecology.wa.gov/email-list-toxic-free-cosmetics-act

Survey: PCB program contractors

This is the survey for contractors to express interest in the PCB lights incentive program.

https://ecology.wa.gov/survey-pcb-program-contractors

Rulemaking Announcement (WAC 173-339) 12/19/24

Rulemaking Announcement CR 101

https://ecology.wa.gov/rulemaking-announcement-wac-173-339-12-19-24

Douglas County solid waste service level ordinance

A sample ordinance from Douglas County outlining minimum service levels for solid waste.

https://ecology.wa.gov/douglas-county-solid-waste-service-level-ordinance

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

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

SEPA determination of nonsignificance

This document is a determination of nonsignificance (DNS) in which Ecology has determined the proposed biosolids general permit will not have a probable significant adverse impact on the environment.

https://ecology.wa.gov/sepa-determination-of-nonsignificance-26201b433614b0478c7dbc8114f0a4ba

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

E-Cycle Washington - registered participants

View the list of registered manufacturers, collectors, transporters or processors in the E-Cycle Washington electronic products recycling program.

https://ecology.wa.gov/e-cycle-washington-registered-participants

Publication index: Mercury information

List of links to documents related to mercury.

https://ecology.wa.gov/mercury

Publication index: Per- and Poly-fluorinated Alkyl Substances (PFAS)

List of links to documents and posters about PFAS

https://ecology.wa.gov/per-and-poly-fluorinated-alkyl-substances-pfas

Publication index: Polychlorinated Biphenyls (PCBs)

List of links to documents and posters about polychlorinated biphenyls (PCBs)

https://ecology.wa.gov/polychlorinated-biphenyls-pcbs

Contaminants in lake sediment cores

We age-date sediment cores from three lakes per year to assess contaminant deposition trends.

https://ecology.wa.gov/research-data/monitoring-assessment/toxics-monitoring/contaminants-in-sediment-cores

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

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

Estimating nitrate groundwater impacts

We developed a method to estimate groundwater nitrate impacts from nutrients and fertilizers.

https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index/nitrates-and-groundwater-quality-tool