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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2011 comprehensive emissions inventory three-year summary

This is a spreadsheet of the 2011 comprehensive three-year emissions inventory.

https://ecology.wa.gov/2011-comprehensive-emissions-inventory-summary

Ecology Open Data Report 2017

Reports progress on the five measures set in Ecology's Open Data Plan.

https://ecology.wa.gov/2017-open-data-report

2011 County Emissions Inventory Technical Documentation

This document describes the methods and data sources used to estimate emissions for base year 2011.

https://ecology.wa.gov/201410countyemissionsinventory2011

Ecology Open Data Plan 2018

Ecology's strategy for enabling public access to our business data sets, satisfy the requirements of RCW 43.105.351.

https://ecology.wa.gov/2018-open-data-plan

Minor source baseline dates by county

This is a spreadsheet of minor sources with baseline dates by county.

https://ecology.wa.gov/201502minorsourcebaselinecounty

2011 Comprehensive Emissions Inventory Categories Reference

This reference document summarizes the methods used to prepare the Washington 2011 County Emissions Inventory.

https://ecology.wa.gov/2011-comprehensive-emissions-inventory-categories

2011 point source emissions annual summary

This is a spreadsheet of the annual summary of 2011 point source emissions.

https://ecology.wa.gov/2011-point-source-emissions-summary

Baseline modeling inventory for Prevention of Significant Deterioration-permitted facilities

This is a spreadsheet of the baseline modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities.

https://ecology.wa.gov/201603prevsignificantdeteriorationbaseline

2014 emissions inventory for Prevention of Significant Deterioration-permitted facilities

This is the spreadsheet of 2014 emissions inventory for facilities with a Prevention of Significant Deterioration permit.

https://ecology.wa.gov/201603prevsignificantdeteriorationinventory

Input data for modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities

This is a spreadsheet of the input data for modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities.

https://ecology.wa.gov/201603prevsignificantdeteriorationsupp

Prevention of Significant Deterioration baseline emissions inventory technical support

This is the technical support document for the baseline emissions inventory for facilities with a Prevention of Significant Deterioration permit.

https://ecology.wa.gov/201603prevofsignificantdeteriorationtechsupport

2015 changes to 2009 vapor intrusion toxicity values and screening levels

2015 Excel spreadsheet of changes to the 2009 vapor intrusion toxicity values and screening levels.

https://ecology.wa.gov/2015vaporintrusionupdates

Freshwater Algae Control Grant Program - SFY 2019 Final Offer List

For the Fresh Water Algae Control grants funding program, this is the State Fiscal Year 2019 Final Offer List showing which projects will be offered funding and how much is being offered to them.

https://ecology.wa.gov/fwac-prgm-sfy-2019-final-offer-list

Aquatic Invasive Plants grants funding program - FY2019 Final Offer List

For the Aquatic Invasive Plants grants funding program, this is the State Fiscal Year 2019 Final Offer List showing which projects will be offered funding and how much is being offered to them.

https://ecology.wa.gov/fy2019-aip-final-offer-list

Package A - Natural Attenuation Tool (Modules 1,2,3)

A calculation tool for demonstrating natural attenuation of groundwater is occurring and help predict when groundwater cleanup levels will be met under the Model Toxics Control Act.

https://ecology.wa.gov/pkganaturalattenuation

CO2 Removal Projects Standards Analysis - SCS Global Services

This independent report was commissioned by the Washington Legislature in 2021 to examine the potential for carbon removal projects in Washington.

https://ecology.wa.gov/20230726scsglobalreportcarbonsequestration

2023 State Agency Fuel Use Greenhouse Gas Reporting Tool

Excel sheet containing fuel use data from state agencies for 2023.

https://ecology.wa.gov/2023stateagencyfueluse-ghgreportingtool

Presentation (WAC 173-400; WAC 173-401) 4-18-24

This is a presentation for the April 18, 2024 stakeholder meeting for Chapter 173-400 WAC, General Regulations for Air Pollution Sources and Chapter 173-401 WAC, Operating Permit Regulation.

https://ecology.wa.gov/presentation-wac-173-400;-wac-173-401-4-18-24

Northeast West Plains PFAS in drinking water sampling results map

The EPA created this map to summarize where samples were taken without showing private well locations.

https://ecology.wa.gov/west-plains-pfas-sampling-results-map

CFS Rulemaking Updates

Slideshow presentation from the Sept. 9 and 12, 2024, CFS Rulemaking Update webinar

https://ecology.wa.gov/presentation-wac-173-424-9-9-and-9-12-2024