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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Air Quality Source Management System (SMS) Instructions

These are instructions about how to create a Secure Access Washington (SAW) Account, register for Air Quality Portal, and add Source Management System.

https://ecology.wa.gov/aqsmsinstructions

Air Quality Source Management System (SMS) User Guide

This is the user guide for the Source Management System (SMS).

https://ecology.wa.gov/aqsmsuserguide

Agenda Workgroup Meeting (WAC 173-455; 400) 02/15/18

This is the agenda for the 2/15/18 work group meeting for WAC 173-455 and 173-400 rulemaking.

https://ecology.wa.gov/agenda-wac173-455;400-02-15-18

Agenda Stakeholder Mtg (WAC 173-405; WAC 173-410; WAC 173-415) 07/17/18

This is the agenda for the 7/17/18 stakeholder meeting for Chapters 173-405, 173-410, and 173-415 rulemaking.

https://ecology.wa.gov/agenda-stakeholder-mtg-wac-173-405;410;415-07-17

Agenda workgroup mtg (WAC 173-455; 173-400) 05/24/17

This is an agenda for a workgroup meeting on 5/24/17 for WAC 173-455 Air Quality Fee Rule; WAC 173-400 General Regulations for Air Pollution Sources.

https://ecology.wa.gov/agenda-workgroup-meeting-wac-173-455;-wac-173-2

Agenda workgroup mtg (WAC 173-455; 173-400) 04/26/17

This is an agenda for a workgroup 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/agenda-workgroup-meeting-wac-173-455;-wac-173-1

Agenda Workgroup Mtg (WAC 173-455; 173-400) 03/21/17

This is an agenda for a workgroup meeting on 3/21/17 for WAC 173-455 Air Quality Fee Rule; WAC 173-400 General Regulations for Air Pollution Sources.

https://ecology.wa.gov/agenda-workgroup-mtg-wac-173-455;-173-400-03-21

Air agency status 08/17/17

Washington Air Agency Regulatory Structure and Web Sites

https://ecology.wa.gov/air-agency-status-wac-173-400;401-08-17-17

Alternative opacity limitations 07/05/17

Discussion on alternative opacity limitations

https://ecology.wa.gov/alternative-opacity-limitations-wac-173-400;401

Carbon Intensities Blended Fuels Substitute Pathways (WAC 173-424) 7-15-22

This is a spreadsheet of carbon intensities of blended fuels for substitute pathways, November 17, 2022 version.

https://ecology.wa.gov/carbon-intensities-blended-fuels-substitute-pa-2

Carbon Intensities Blended Fuels Substitute Pathways (WAC 173-424) 7-15-22

This is a spreadsheet of carbon intensities of blended fuels for substitute pathways, July 15, 2022 version.

https://ecology.wa.gov/carbon-intensities-blended-fuels-substitute-pa-1

Carbon Intensities Blended Fuels Substitute Pathways (WAC 173-424) 4-29-22

This is a spreadsheet of carbon intensities of blended fuels for substitute pathways, April 29, 2022 version.

https://ecology.wa.gov/carbon-intensities-blended-fuels-substitute-pathwa

Carbon Intensity Lookup Table (WAC 173-424) 4-26-22

This is a table of carbon intensity values for lookup pathways under Washington Clean Fuels Standard, 4/26/22 version.

https://ecology.wa.gov/carbon-intensity-lookup-table-wac-173-424-4-26-22

Carbon Intensity Lookup Table (WAC 173-424) 03/09/22

This is the 3/9/22 table of carbon intensity lookup and baseline carbon intensity.

https://ecology.wa.gov/draft-carbon-intensity-lookup-table-wac-173-424-03

Carbon Intensity Model Peer Review Report (WAC 173-424) 04/06/22

This is the April 6, 2022 Carbon Intensity Model Peer Review Report for Chapter 173-424 WAC, Clean Fuels Program Rule.

https://ecology.wa.gov/carbon-intensity-model-peer-review-report-wac-173

Crude Carbon Intensity Analysis (WAC 173-424) 11-22

This is the final table of Washington crude carbon intensity analysis for 2017-2020.

https://ecology.wa.gov/crude-carbon-intensity-analysis-wac-173-424-11-22

Crude Carbon Intensity Analysis (WAC 173-424) 06-22

This is the June 2022 table of Washington crude carbon intensity analysis for 2017-2020.

https://ecology.wa.gov/crude-carbon-intensity-analysis-wac-173-424-06-22

Crude Carbon Intensity Analysis (WAC 173-424) 04/22

This is the April 2022 table of Washington crude carbon intensity analysis for 2017-2020.

https://ecology.wa.gov/crude-carbon-intensity-analysis-wac-173-424-04-22

Crude Carbon Intensity Analysis (WAC 173-424) 03/09/22

This is the March 9, 2022 table of Washington crude carbon intensity analysis for 2017-2020.

https://ecology.wa.gov/crude-carbon-intensity-analysis-wac-173-424-03-09

Bridge Point Tacoma – Settlement Agreement

Legal document for the agreement with Bridge Point Tacoma to help reduce air quality impacts from the South Tacoma warehouse project.

https://ecology.wa.gov/bridge-point-tacoma-settlement-agreement