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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Spokane County's Second 10-Year Limited Maintenance Plan for Carbon Monoxide

State Implementation Plan Revision for Spokane County Second 10-Year Limited Maintenance Plan for Carbon Monoxide

https://ecology.wa.gov/spokaneco

Spokane County's Second 10‐Year Limited Maintenance Plan for Particulate Matter (PM10)Spokane County, Washington Second 10-Year Limited Maintenance Plan for PM10

State Implementation Plan Revision for Spokane County Second 10-Year Limited Maintenance Plan for PM10

https://ecology.wa.gov/spokanepm10second10lmp

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

Fireplaces Certified in Washington

List of fireplaces that meet Washington standards

https://ecology.wa.gov/wood-fireplaces

Sabey Intergate Data Center - Notice of Construction permit and technical support document

Notice of Construction permit and technical support document for Sabey Intergate Data Center, 4/20/16

https://ecology.wa.gov/sabey16aq-e011

Yahoo Data Center - Notice of Construction permit and technical support document

Notice of Construction permit and Technical Support Document for Yahoo Data Center, 5/25/16

https://ecology.wa.gov/yahoo16aq-e012

Yahoo Data Center - Technical Support Document for Notice of Construction permit

Technical Support Document for Notice of Construction permit for Yahoo Data Center, 5/25/16

https://ecology.wa.gov/yahootsd16aqe12amd1

Yahoo Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Yahoo Data Center, 2/17/16

https://ecology.wa.gov/yahoogenesistier2ltr02172016

Yahoo Data Center - Health Impact Assessment

Health Impact Assessment (Second Tier Review) for Yahoo Data Center, 2/17/16

https://ecology.wa.gov/yahoogenesishis02172016

Vantage Data Center - Health Impact Assessment Protocol

Methods and procedures to follow for a Health Impact Assessment (Second Tier Review) for Vantage Data Center, 3/7/16

https://ecology.wa.gov/vantage-hia-protocol-030716ada

Yahoo Data Center - Draft Notice of Construction permit

Draft Notice of Construction permit for Yahoo Data Center, 2/5/16

https://ecology.wa.gov/yahoopd02052016

Yahoo Data Center - Draft Technical Support Document for Notice of Construction permit

Draft Technical Support Document for Notice of Construction permit for Yahoo Data Center, 2/5/16

https://ecology.wa.gov/yahoodrafttsd02052016

Vantage Data Center - Air Dispersion Modeling Protocol

Protocol and methods for air dispersion modeling for a Notice of Construction application for Vantage Data Center, 2/25/16

https://ecology.wa.gov/vantage-modeling-protocol-022516ada

Yahoo Data Center - Notice of Construction application

Notice of Construction application (revised) for Yahoo Data Center, 12/23/15

https://ecology.wa.gov/yahoorevisednoc12232015

Yahoo Data Center - Revised Risk Analysis

Risk Analysis for Yahoo Data Center (revised), 12/23/15

https://ecology.wa.gov/yahoorevisedriskanalysis12232015

Microsoft Oxford Data Center - Request for revision of Notice of Construction permit

Request for revisions to Microsoft Oxford Data Center Notice of Construction permit, 4/8/16

https://ecology.wa.gov/mwh-noc-04082016-supp-09092016

Microsoft Oxford Data Center - Health Impact Assessment

Health Impact Assessment for Microsoft Oxford Data Center, 4/8/16

https://ecology.wa.gov/mwh-tier2hia-04082016