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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Member Insurance - Extended Summary

Extended summary of WCC health insurance policy.

https://ecology.wa.gov/member-insurance-extended-summary

Member Insurance Summary

Summary of WCC member health insurance policy

https://ecology.wa.gov/member-insurance-summary

Mercury light product stewardship plan

Washington State Mercury-Containing Lights Product Stewardship Program Plan, 2021 update

https://ecology.wa.gov/mercurylightproductstewardshipplan

Mercury Lights Q & A

Questions and answers regarding sales of mercury containing lights

https://ecology.wa.gov/mercurylightsq-a

MNA Plain Text

Monitored natural attenuation (MNA) process at the Boeing Auburn site

https://ecology.wa.gov/mna-plaintext

Memo about early life adjustment factors (WAC 173-460) 02/14/19

This is a 2/14/19 memo about early life adjustment factors in deriving acceptable source impact levels (ASIL) for a subset of toxic air pollutants (TAPs). It is related to rulemaking for Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/memo-about-early-life-adjustment-factors-wac-173

Memo about Ecology's recommendations for updating TAP list (WAC 173-460) 03/04/19

This is a 3/4/19 memo about updating the list of toxic air pollutants (TAP). It is related to rulemaking for Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/memo-about-ecology-s-recommendations-wac-173-1

Memo about Ecology's recommendations for updating TAP list (WAC 173-460) 02/14/19

This is a 2/14/19 memo about updating the list of toxic air pollutants (TAP). It is related to rulemaking for Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/memo-about-ecology-s-recommendations-wac-173-460

Memo about removing ammonium sulfate from toxic air pollutants list (WAC 173-460) 02/14/19

This is a 2/14/19 memo about removing ammonium sulfate from the list of toxic air pollutants (TAP). It is related to rulemaking for Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/memo-about-removing-ammonium-sulfate-from-toxic-ai

Meeting summary (WAC 173-455; WAC 173-400) 05/24/17

This is a summary of a meeting on 05/24/17 for WAC 173-455 Air Quality Fee Rule; WAC 173-400 General Regulations for Air Pollution Sources.

https://ecology.wa.gov/meeting-summary-wac-173-455;-wac-173-400-05-24-1

Meeting summary (WAC 173-455; WAC 173-400) 04/26/17

This is a summary for a meeting on 4/26/17 for WAC 173-455 Air Quality Fee Rule; WAC 173-400 General Regulations for Air Pollution Sources.

https://ecology.wa.gov/workgroup-meeting-summary-wac-173-455;-wac-173-40

Methods for Updating the List of Toxic Air Pollutants, Chapter 173-460 WAC

This documents the methods Ecology is using to update the list of toxic air pollutants in Chapter 173-460 WAC.

https://ecology.wa.gov/2018-guidance-for-updating-the-list-of-toxic-air-p

Metro Metals Annual Audit

This document includes information about direct processor, Simon Metals, and includes their annual environmental audit report. This audit verifies compliance with the performance standards for direct processors in the E-Cycle WA program.

https://ecology.wa.gov/simonmetalsaudit2017-pdf

Mercer Island Approved SMP March 2015

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

https://ecology.wa.gov/mercer-island-approved-smp-march-2015

Millwood Approved SMP May 2014

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

https://ecology.wa.gov/millwood-approved-smp-may-2014

Milton Approved SMP December 2012

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

https://ecology.wa.gov/milton-approved-smp-december-2012

Mercury Switch Removal Program Invoice Form (PDF)

Invoice form for mercury switches

https://ecology.wa.gov/mercury-switch-removal-program-invoice-form

Mercury Switch Removal Program: Vehicle Recycler Sign-up Form (PDF)

Fill out this form to sign up for the mercury switch removal program

https://ecology.wa.gov/mercury-switch-removal-program-vehicle-recycler-s

Lithium-ion battery management under Chapter 173-303 WAC, Dangerous Waste Regulations

This memo clarifies how businesses can safely manage lithium-ion batteries as universal waste under the Dangerous Waste Regulations.

https://ecology.wa.gov/memo-lithium-ion-batteries

Text alternative for mini cleanup process graphic

This is a text alternative for the small version of the graphic showing the steps in Washington's cleanup process.

https://ecology.wa.gov/mini-step-graphic-text-alternative