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.
Transcript of the "Is your dry cleaner still using toxic PERC?" audio blog
Fifty dry cleaning businesses across the state have now switched from using toxic perchloroethylene (PERC) to a less toxic alternative since 2019. However, approximately 60 PERC-using businesses are still operating, prompting Ecology to redouble its efforts to eliminate the hazardous chemical from use.
https://ecology.wa.gov/20210820-perc-audio-transcript
July 2018 vapor intrusion listening session: Q&As
Questions and answers from the vapor intrusion listening session in Bellevue, July 23, 2018.
https://ecology.wa.gov/20180723vaporlisteningsessonqa
July 2018 vapor intrusion listening session: Slides
PowerPoint slides from the vapor intrusion listening session in Bellevue, July 23, 2018.
https://ecology.wa.gov/20180723vaporlisteningsessslides
Transcript of the "Helping your community help small businesses" audio blog
The Pollution Prevention Assistance program (PPA) helps businesses and organizations partner with local authorities to ensure they're effectively and efficiently meeting all their obligations.
https://ecology.wa.gov/20210820-ppa-audio-transcript
Transcript of the "Replacing toxic products with safer alternatives" audio blog
The vast majority of chemicals that seep into peoples' bodies and the environment come not from factories or treatment facilities, but from the very products and services people buy and use every day.
https://ecology.wa.gov/20210820-prp-audio-transcript
Draft-EIS-Process
Steps in the state environmental review process for a draft EIS
https://ecology.wa.gov/draft-eis-process
2015 changes to 2009 vapor intrusion toxicity values and screening levels
2015 Excel spreadsheet of changes to the 2009 vapor intrusion toxicity values and screening levels.
https://ecology.wa.gov/2015vaporintrusionupdates
Received through January 18, 2012: Comments on Ecology's Fish Consumption Rates Technical Support Document (Version 1)
Comments received through January 18, 2012, in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
https://ecology.wa.gov/20120118fcrcommentsforversion1
PUREX Administrative Order
The Department of Ecology issued this Administrative Order (Order) requiring Department of Energy-Richland Operations Office and CH2M HILL Plateau Remediation Company to comply with WA codes and the Hanford RCRA permit.
https://ecology.wa.gov/20170510purexenforcement
Continued Response Actions to Partial Collapse of PUREX Tunnel 1
Due to the continued immediate threat to human health and the environment posed by the instability of PUREX Tunnel 1, Ecology approves grouting of PUREX Tunnel 1 as an interim stabilization measure.
https://ecology.wa.gov/20170608purexgroutresponse
Received through January 18, 2012: Emailed form comments in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
Emailed (form) comments received through January 18, 2012, in response to Ecology's Fish Consumption Rates Technical Support Document (Version 1).
https://ecology.wa.gov/20120118fcrformlettercommentsforversion1
July 16, 2012: Ecology's approach to fish consumption standards in Washington state
Former Ecology Director Ted Sturdevant's 2012 transmittal letter announcing Ecology's approach to fish consumption standards in Washington state.
https://ecology.wa.gov/20120716sturdevantfcrapproachtostandards
Amended Administrative Order Docket #15419 amending Order Docket #14156
This amended order adds PUREX Tunnel 2 to the scope of Corrective Action 3 and provides additional time for USDOE-RL and CHPRC to complete Corrective Action 3.
https://ecology.wa.gov/20170915purexamendedorder
August 30, 2012: Fish consumption rates technical support document [draft Version 2]
Former Ecology Director Ted Sturdevant's 2012 transmittal letter announcing release of fish consumption rates technical support document [draft Version 2.0].
https://ecology.wa.gov/20120830sturdevantfcrtechsuppdraftv2
Received through October 26, 2012: Comments on Ecology's Fish Consumption Rates Technical Support Document (draft Version 2.0)
Comments received through October 26, 2012, on Ecology's Fish Consumption Rates Technical Support Document (draft Version 2.0).
https://ecology.wa.gov/20121026fcrcommentsforversion2
November 5, 2012: Fish Consumption Technical Review Meeting
Meeting summary from Nov. 5, 2012, technical review panel meeting to discuss the revised version of the Fish Consumption Technical Report V.2, hosted by Washington State Department of Ecology.
https://ecology.wa.gov/20121105fcrtechreviewmtngforv2
November 27, 2012: Fish Consumption Technical Review Meeting
Meeting summary from Nov. 27, 2012, technical review panel meeting to discuss the revised version of the Fish Consumption Technical Report V.2, hosted by Washington State Department of Ecology.
https://ecology.wa.gov/20121127fcrtechreviewmtngforv2
Goldendale Energy Draft EIS June 28, 2022 hearing transcript
Transcript of the second hearing on the Goldendale Energy Storage Project draft EIS
https://ecology.wa.gov/goldendale-energy-draft-eis-hearing-2-transcript
January 15, 2013: Final fish consumption rates technical support document
Former Ecology Director Ted Sturdevant's 2013 transmittal letter announcing release of final fish consumption rates technical support document (version 2.0).
https://ecology.wa.gov/20130115sturdevantfcrtechsupportdocv2
AFFF interactive DEIS plain text
This is the plain text version of the AFFF DEIS.
https://ecology.wa.gov/afff-interactive-deis-plain-text
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