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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Pasco Basin Groundwater Subarea

Rulemaking Announcement (WAC 173-135)

https://ecology.wa.gov/wac-173-135_-21-01

Washington State Brownfields Conference Agenda

Download the agenda for the 2019 Washington State Brownfields Conference.

https://ecology.wa.gov/pdf-wa-brownfields-conference-2019-agenda

Vapor Intrusion for TCE

EPA's Region 9 memo Vapor Intrusion response action levels

https://ecology.wa.gov/vi-tce-region-9-memo

Vapor Intrusion guidance for TCE

EPA's Region 10 memo Vapor Intrusion toxicity

https://ecology.wa.gov/vi-tce-region-10-memo

Fire Mountain Farms vicinity map

Vicinity map for Fire Mountain Farms' proposed biosolids land application site

https://ecology.wa.gov/vicinity-map

WA DFW Request for TDG Short-term Mod

This is a letter from the WA Dept. of Fish and Wildlife requesting Ecology to adjust its total dissolved gas standards on the lower Snake and Columbia rivers.

https://ecology.wa.gov/wa-dfw-request-for-tdg-short-term-mod

Vessel Deconstruction Permit fact sheet

This fact sheet is a companion document to the draft National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit for Discharges Associated with Vessel Deconstruction Activity (Vessel Deconstruction General Permit, or VDGP). The proposed permit authorizes the discharge of stormwater and a limited number of non-stormwater discharges.

https://ecology.wa.gov/vesseldeconstructionfactsheet

Vessel Desconstruction Permit

This permit defines requirements for pollution prevention during the dismantling of vessels.

https://ecology.wa.gov/vesseldeconstructionpermit

E-Cycle Flyer

This pdf document is a flyer with E-Cycle Washington information.

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

WA-GREET electric power final (WAC 173-424) 06-30-22

This is the June 30, 2022 final supporting documentation for electric power pathway in WA-GREET, Washington's version of the Greenhouse Gases, Regulated Emissions, and Energy Use in Technologies Model.

https://ecology.wa.gov/wa-greet-electric-power-final-wac-173-424-06-30-22

WA-GREET electric (WAC 173-424) 06-30-22

This is the June 30, 2022 supporting documentation for electric power pathway in WA-GREET, Washington's version of the Greenhouse Gases, Regulated Emissions, and Energy Use in Technologies Model.

https://ecology.wa.gov/wa-greet-electric-wac-173-424-06-30-22

WA-GREET supplemental (WAC 173-424) 04/04/22

This is the April 4, 2022 supporting documentation for WA-GREET, Washington's version of the Greenhouse Gases, Regulated Emissions, and Energy Use in Technologies Model.

https://ecology.wa.gov/wa-greet-supplemental-wac-173-424-04-04-22

WA-GREET supplemental (WAC 173-424) 03/08/22

This is supporting documentation for WA-GREET, Washington's version of the Greenhouse Gases, Regulated Emissions, and Energy Use in Technologies Model.

https://ecology.wa.gov/wa-greet-supplemental-wac-173-424-03-08-22

Waste 2 Resources Advisory Committee Roster

Current membership roster for the Waste 2 Resources Advisory Committee

https://ecology.wa.gov/w2racmembership

WACA appeal 2016

WA Aggregates & Concrete Association appeal of Sand & Gravel General Permit in 2016

https://ecology.wa.gov/wacaappeal2016

WA State EV Battery Management Study Overview

This document is part of the ongoing EV battery study.

https://ecology.wa.gov/wa-state-ev-battery-management-study-overview

WAC173-925

This document is the Washington Administrative Code (WAC) for post-consumer recycled content in plastic containers.

https://ecology.wa.gov/wac173-925

WAC 173-925 Rule adoption notice

This is the CR-103 form for adoption of WAC 173-925 rulemaking.

https://ecology.wa.gov/wac-173-925-rule-adoption-notice

WA Composted Materials 2023

This is Solid Waste Management's list of Washington compost facilities and the types of materials they accept.

https://ecology.wa.gov/wa-composted-materials-2023

Washington State Climate Resilience Strategy Summary - Vietnamese

Climate Resilience Strategy Summary in Vietnamese

https://ecology.wa.gov/vietnamese-climate-resilience-strategy-summary