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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BOD benchsheet for SM 5210B

This a quality-control tool for environmental laboratories is used with the 5-day Biochemical Oxygen Demand (BOD) test, Standard Method 5210-B.

https://ecology.wa.gov/bod-benchsheet-sm-5210b

Boatyard general permit Erratus

Boatyard general permit Corrections and Clarifications (Erratus)

https://ecology.wa.gov/boatyard-erratumandclarifications-20160927

Bridge and Ferry Terminal Washing General Permit

https://ecology.wa.gov/bridgeferrywashgenpermit-final

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

Bridge and Ferry Terminal Washing General Permit Fact Sheet

https://ecology.wa.gov/bridgeferrywashingfactsheet-092016

Boatyard general permit fact sheet

Detailed explanation of Boatyard general permit

https://ecology.wa.gov/boatyard-factsheet-final-20160706

2011-2016 Boatyard general permit fact sheet

Detailed explanation of 2011-2016 Boatyard general permit

https://ecology.wa.gov/boatyardfs030211

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

Monitoring Protocols - Bridge Maintenance Washing

Provides monitoring protocols for bridge maintenance washing under the Bridge and Ferry Terminal Washing General Permit.

https://ecology.wa.gov/bridgewashing_2022-monitoringprotocols_bridgemaint

Monitoring Protocols - Ferry Terminal Routine Maintenance

Provides monitoring protocols for ferry terminal routine maintenance under the Bridge and Ferry Terminal Washing Permit.

https://ecology.wa.gov/bridgewashing_2022-monitoringprotocols_ferrytermin

Boatyard general permit

This permit protects marine waters from toxics that can get into stormwater runoff from boatyards.

https://ecology.wa.gov/boatyard-generalpermit-final-20160706

2011-2016 Boatyard general permit

This is the previous permit that is no longer active. This permit protects marine waters from toxics that can get into stormwater runoff from boatyards.

https://ecology.wa.gov/boatyardpermit030211

BioMod for Stormwater Runoff Filtration

A letter from Ecology stating this technology is equivalent to a bioretention planter box.

https://ecology.wa.gov/biomod

Bridge Washing Workshop Presentation

Copy of slideshow presentation given at Bridge Washing General permit public workshop in 2022.

https://ecology.wa.gov/bridgewashingworkshoppresentation-2022

Silt Fence BMP

Best managment practice for Silt Fence.

https://ecology.wa.gov/bmpc233siltfencefe

Boatyard permit holders

Current list of boatyard permit holders in Washington

https://ecology.wa.gov/boatyardscoveredbygp-20150608

What changed between permits?

This shows what changed between the 2011-2016 Boatyard general permit and the current version (2016-2021).

https://ecology.wa.gov/boatyard-summaryofchanges-2011to2016

BMP Supplies Spring Berm

This letter determines that the Best Management Practices Supplies Spring Berm is functionally equivalent to the C207 (Check Dam) and C208 (Triangular Silt Dike) Best Management Practices.

https://ecology.wa.gov/bmpsupplies

Brentwood StormTank Modeling

Modeling report using the Western Washington Hydrology Model to size Brentwood StormTank for stormwater runoff and flow control.

https://ecology.wa.gov/brentwood-stormtankmodelingwwhm

Bioretention Inspection Form

Low Impact Development guidance - Bioretention Inspection Form

https://ecology.wa.gov/bioretentioninspectionform