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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Creating a SAW account for Washington Emissions Inventory Reporting System (WEIRS)

Instructions for creating a SAW account for Washington Emissions Inventory Reporting System (WEIRS)

https://ecology.wa.gov/20190723creatingsawweirsaccount

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

2021 State Agency GHG Calculator

Calculator for state agencies to determine their greenhouse gas emissions

https://ecology.wa.gov/2021-stateagencyghgcalculator

Washington Mandatory Greenhouse Gas Reporting Program - Reported Emissions for 2012-2015

Certain large facilities are required to submit their greenhouse gas emissions to Ecology. This is the report of those emissions from 2012-2015.

https://ecology.wa.gov/wa-ghg-reporting-data-2012-2015

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

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

Washington Emissions Inventory Reporting System (WEIRS) training, 2/8/23

This is the presentation for the February 8, 2023 training about Washington Emissions Inventory Reporting System (WEIRS).

https://ecology.wa.gov/20230208weirstraining

Prior years point source emissions data

This spreadsheet shows emissions from facilities and other point sources from 2009 forward.

https://ecology.wa.gov/prior-years-point-source-emissions

State Agency Greenhouse Gas Emissions Calculator

State agencies use this calculator to determine and report their greenhouse gas emissions.

https://ecology.wa.gov/stateagencyghgcalculator

2017 Greenhouse gas emissions by sector

Alt text for greenhouse gas emission by sector graphic

https://ecology.wa.gov/20200407-2017ghgemissionsbysector-alt

2001 - 2017 GHG and GDP percentage changes

graph showing population, economy, greenhouse gas emissions from 2001 - 2017

https://ecology.wa.gov/20191118ghggdp-alt

Washington State Agencies Required to Report their Greenhouse Gas Emissions to Ecology

Some Washington state agencies are required to report their greenhouse gas emissions to Ecology. This is a list of those that are required.

https://ecology.wa.gov/stateagenciesrequiredtoreportghg

Adopted rule language for (WAC 173-441) 09/15/16

This is adopted rule language for WAC 173-441 Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/adopted-rule-language-for-wac-173-441-09-15-16

Adopted rule language (WAC 173-441) 02/09/22

This is adopted rule language for Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/adopted-rule-language-wac-173-441-02-09-22

Agenda (WAC 173-441) 07/22/21

This is the agenda for the 7/22/21 stakeholder meeting for Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/agenda-wac-173-441-07-22-21

Attachment 2: Health permitting conditions

RADIOACTIVE AIR EMISSIONS LICENSE

https://ecology.wa.gov/attachment-2-health-permitting-conditions

Draft rule language (WAC 173-441) 07/22/21

This is the draft rule language for Chapter 173-441 WAC, Reporting of Emissions of Greenhouse Gases.

https://ecology.wa.gov/draft-rule-language-wac-173-441-07-22-21

Washington Emissions Inventory Reporting System (WEIRS) training, 2/1/24

This is the presentation for the February 1, 2024 training about Washington Emissions Inventory Reporting System (WEIRS).

https://ecology.wa.gov/20240201weirstraining