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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List of Businesses Participating in Product Replacement Programs

List of businesses participating in our product replacement programs.

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

PSI Cleanup Sites - Port Gardner, Sound Living Conference presentation (October 25, 2014)

Presentation about the Port Gardner cleanup and The Puget Sound Initiative, from the Sound Living conference (Oct. 25, 2014)

https://ecology.wa.gov/psi-cleanup-sites-port-gardner-sound-living-con

Water Quality Assessment/Policy 1-11 Updates Bioassessment Alternatives Proposed by Ecology January 2017

Ecology is proposing 3 Alternatives for purposes of public dialogue on the use of bioassessment data for listing in the Water Quality Assessment.

https://ecology.wa.gov/proposed_bioassessment_alternatives

Puget Soundkeeper and Spokane Riverkeeper letter to Ecology about Water Quality Assessment Policy 1-11

June 2017 Letter to Ecology about Water Quality Assessment Policy 1-11 from Puget Soundkeeper and Spokane Riverkeeper

https://ecology.wa.gov/psk-srk-letter-on-policy

PSNGP Annual Report Instructions-Year1

Instructions for Puget Sound Nutrient General Permit holders to submit their Annual Reports for Year 1.

https://ecology.wa.gov/psngpannualreportinstructions-year1

Proposed rulemaking (WAC 173-566) 01/17/2019

This is the proposed rulemaking announcement (CR-102) Chapter 173-566 Streamflow Restoration Funding

https://ecology.wa.gov/rule-language-wac173-566

Public Hearing Presenation Slides (WAC 173-340) 02/15/23

This presentation provides an overview of the proposed changes to current WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations

https://ecology.wa.gov/public-hearing-presentation-slides-chapter-173-340

Public Comment Matrix (WAC 173-219) Sept. 21, 2015

Spreadsheet of public comments for the Reclaimed Water rulemaking from Sept. 21, 2015.

https://ecology.wa.gov/public-comment-matrix-wac-173-219-09-21-15

Public hearing presentation (WAC 173-360; 173-360A) 02/28/18

This is the presentation provided at the public hearings on the rulemaking proposal for the underground storage tank regulations (WAC 173-360; 173-360A). The hearings occurred on February 28, 2018 and March 2, 2018.

https://ecology.wa.gov/public-hearing-presentation-wac-173-360;-173-360a

Public hearing presentation (March 13, 2018)

This is the presentation for the proposed changes to Chapters 173-400 and 173-401 WAC.

https://ecology.wa.gov/public-hearing-presentation-wac-173-400;401-03-1

PSE Crystal Mountain spill - health advisory

PSE health advisory

https://ecology.wa.gov/pse-crystal-mountain-spill-1

PSE Crystal Mountain spill - Press Release November 17, 2006

Press Release for November 17, 2006

https://ecology.wa.gov/pse-crystal-mountain-spill-2

PSE Crystal Mountain spill - PSE Health Advisory, November 21, 2006

PSE Health Advisory for November 21, 2006

https://ecology.wa.gov/pse-crystal-mountain-spill-3

Prosser Approved SMP October 205

Shoreline Master Program that has been adopted by the local jurisdiction and Approved by Ecology

https://ecology.wa.gov/prosser-approved-smp-october-205

Public information session agenda

Public information session agenda for BPC tug Escort Rulemaking

https://ecology.wa.gov/public-information-session-agenda

Public Hearing Presentation

Presentation for Public Hearing

https://ecology.wa.gov/public-hearing-presentation

Washington State Climate Resilience Strategy Public Comment Draft

This draft public comment period details how to provide comments and feedback on the Climate Resilience Strategy.

https://ecology.wa.gov/public-comment-draft

Proposed Source Test Manual (WAC 173-400; WAC 173-401) 9-18-24

This is the proposed Source Test Manual, September 18, 2024.

https://ecology.wa.gov/proposed-source-test-manual-wac-173-400;-wac-173-401-9-18-24

Shoreline Management Act Rulemaking Public listening session

Slides from our Sept. 23 Listening session

https://ecology.wa.gov/public-listening-session

Clean Vehicles Program Rulemaking Public Info Session Dec. 10 2024

Slideshow presentation

https://ecology.wa.gov/clean-vehicles-program-rulemaking-public-information-session