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.
Bio Recycling North Ranch Final Coverage Letter
A letter outlining the final coverage requirements for Bio Recycling's North Ranch site.
https://ecology.wa.gov/biorecyclingfinalcoverageletter12-2017
Bio Recycling North Ranch Response to Comments
Ecology's response to comments on the issuance of coverage for Bio Recycling's North Ranch site.
https://ecology.wa.gov/biorecyclingresponsetocomments12-2017
Biosolids permit facility type chart
This is a flow chart to help wastewater treatment operators determine their facility type for the Biosolids general permit.
https://ecology.wa.gov/biosoilds-permit-facility-type-chart
Policy 1-11 Public Dialogue Bioassessment Listings December 2016
This is the quick review of some key issues regarding bioassessment listings in the Water Quality Assessment/Policy 1-11 Updates
https://ecology.wa.gov/bioassessmentissuepaperpolicy1-11
Biosolids facilities list
This document lists Washington's active biosolids facilities.
https://ecology.wa.gov/biosolids-facilities-list
Biosolids permit process chart
This is a timeline chart showing the steps of Ecology's process for developing the new statewide general permit for biosolids management.
https://ecology.wa.gov/biosolids-permit-process-chart
Biosolids Report Instructions FAQ
These are instructions for biosolids managers in Washington for submitting their facility's annual report.
https://ecology.wa.gov/biosolids-report-instructions-faq
Biosolids Sampling and Analysis Plan Template
A document template for use in developing a biosolids sampling and analysis plan.
https://ecology.wa.gov/biosolids-sampling-and-analysis-plan
Signature Delegation Authority
This is a document for biosolids facilities on how to delegate signature authority.
https://ecology.wa.gov/biosolids-signature-delegation-authority
Biosolids Site Specific Land Application Plan
a document template for biosolids site specific land application plan development.
https://ecology.wa.gov/biosolids-site-specific-land-application-plan
Biosolids Spill Prevention
A sample biosolids spill prevention plan to assist municipalities in developing their own plans.
https://ecology.wa.gov/biosolids-spill-prevention
Ecology Water Quality Grants and Loans BMP Approval Form
BMP Approval Form for Ecology Water Quality Grants and Loans funding and projects
https://ecology.wa.gov/bmp-approval-form
Reporting BMPs and Load Reductions guidance for 319 and Centennial projects
BMP and Load Reduction Reporting PowerPoint Presentation
https://ecology.wa.gov/bmp-and-load-reduction-reporting-2017
BioMod for Stormwater Runoff Filtration
A letter from Ecology stating this technology is equivalent to a bioretention planter box.
https://ecology.wa.gov/biomod
Bioretention Inspection Form
Low Impact Development guidance - Bioretention Inspection Form
https://ecology.wa.gov/bioretentioninspectionform
Black Diamond Approved SMP February 2014
Shoreline Master Program that has been adopted by the local jurisdiction and Approved by Ecology
https://ecology.wa.gov/black-diamond-approved-smp-february-2014
Biosolids_EasternWA_LandApp
This map shows locations of biosolids land application sites in Eastern Washington.
https://ecology.wa.gov/biosolids_easternwa_landapp
Biosolids_WesternWA_LandApp
This map shows locations of biosolids land application sites in Western Washington.
https://ecology.wa.gov/biosolids_westernwa_landapp
Biosolids facilities list 2025
This is Ecology's official list of biosolids facilities in Washington.
https://ecology.wa.gov/biosolids-facilities-list-a5a06e95e96db8d865eedf1f5db8a461
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