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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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

Benton Clean Air Agency General Air Quality Rules

Including Benton Clean Air Agency rules into the State Implementation Plan

https://ecology.wa.gov/bentoncombinedfilessubmittal

State Implementation Plan Revision: Updates to Spokane Regional Clean Air Agency Regulations

State Implementation Plan Revision Updates to Spokane Regional Clean Air Agency Solid Fuel Burning Devices Rule (Regulation I - Article VIII)

https://ecology.wa.gov/finalsipspokane2015

Exceptional Event Demonstration for the August 14, 2015 PM10 Exceedence in Kennewick

report demonstrating that high winds on August 14, 2015 overwhelmed agriculture erosion controls and contributed to elevated levels of particle pollution in Kennewick.

https://ecology.wa.gov/20150814-exceptional-event-demonstration

Titan Data Center Moses Lake Approval Order 15AQ-E616

This is the 2015 air quality permit approval order for Titan Data Center in Moses Lake.

https://ecology.wa.gov/20150520titan15aqe616

Sabey Intergate Data Center - Draft Notice of Construction permit

Draft notice of construction permit for Sabey Intergate Data Center, 11/16/15

https://ecology.wa.gov/prelim

Sabey Intergate Data Center - Health Impact Assessment letter

Health impact assessment (Second Tier Review) letter for Sabey Intergate Data Center, 11/16/15

https://ecology.wa.gov/2ndtierrev

Sabey Intergate Data Center - Revised Health Impact Assessment

Revised Health Impact Assessment for Sabey Intergate Data Center, 11/16/15

https://ecology.wa.gov/revhistmt

Sabey Intergate Data Center - Draft Notice of Construction Technical Support Document

Draft Notice of Construction Technical Support Document for Sabey Intergate Data Center, 11/16/15

https://ecology.wa.gov/tsd111615

Sabey Intergate Data Center - Appendix E of Notice of Construction permit

Appendix E of Notice of Construction application for Sabey Intergate Data Center, 6/4/15

https://ecology.wa.gov/appxe

Sabey Intergate Data Center - Request for revisions for Notice of Construction permit

Request for revisions to Notice of Construction permit for Sabey Intergate Data Center, 3/4/15

https://ecology.wa.gov/revrequestao030415

Sabey Intergate Data Center - Updated Health Impact Assessment

Updated Health Impact Assessment (Second Tier Review) Recommendation for Sabey Intergate Data Center, 3/3/15

https://ecology.wa.gov/updaterpt2ndtier

Microsoft Oxford Data Center - Draft Notice of Construction permit

Draft Notice of Construction Permit for Microsoft Oxford Data Center, 5/14/15

https://ecology.wa.gov/draftpermit

Microsoft Oxford Data Center - Technical Support Document for draft Notice of Construction permit

Draft Notice of Construction Technical Support Document for Microsoft Oxford Data Center, 5/14/15

https://ecology.wa.gov/20150514oxforddrafttsd

Microsoft Oxford Data Center - Technical Support Document for draft Notice of Construction permit

Draft Notice of Construction Technical Support Document for Microsoft Oxford Data Center, 5/14/15

https://ecology.wa.gov/tsd

Microsoft Oxford Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Microsoft Oxford Data Center, 5/13/15

https://ecology.wa.gov/20150513oxfordhialtr

Microsoft Oxford Data Center - Health Impact Assessment Recommendation

Health Impact Assessment (Second Tier Review) Recommendation for Microsoft Oxford Data Center, 5/13/15

https://ecology.wa.gov/20150513oxfordhiarec

Microsoft Oxford Data Center - Notice of Construction application

Notice of Construction Application for Microsoft Oxford Data Center, 2/15/15

https://ecology.wa.gov/20150215oxfordnocapp