Research & Data

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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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Revised Diesel Engine Exhaust Particulate Matter Health Risk Assessment Report Quincy, Washington

This report is a final health risk assessment (HRA) of diesel particles from some Quincy data centers.

https://ecology.wa.gov/20180806healthdieseldatacenter

VW state school bus grant awards

VW state school bus grant awards - text version

https://ecology.wa.gov/20181218schoolbusawardedgrants-alt

20181205 Request for info - Public ferries

Request for information for public ferry repower grants

https://ecology.wa.gov/20181205-requestforinfo

2018 School Bus Replacement Preliminary Application Criteria

A criteria supplement to the 2018 Clean School Bus Replacement Application.

https://ecology.wa.gov/2018schoolbusreplacementprelimappcriteria

2018 School Bus Replacement Preliminary Application

A preliminary application to apply for the VW state settlement grant for clean school bus replacement.

https://ecology.wa.gov/2018schoolbusreplacementprelimapplication

2018 Transit Bus Replacement Interest Form 2018

A preliminary application to apply for the VW state settlement grant for transit bus replacement.

https://ecology.wa.gov/2018transitbusreplacementinterestform2018

2019 Draft Acceptable Source Impact Levels (ASIL) Options (WAC 173-460) 02/14/19

This is a 2/14/19 spreadsheet of options to update the list of acceptable source impact levels (ASIL) in Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/2019-draft-asil-options-wac-173-460-02-05-19

2019 Draft Labeling Options (WAC 173-443) 12/17/19

This is a 12/17/19 draft document about options for labeling products and equipment in Chapter 173-443 WAC, Hydrofluorocarbons.

https://ecology.wa.gov/2019-draft-labeling-options-wac-173-443-12-17-19

2019 Draft ASIL SQER Deminimis Values (WAC 173-460) 03/04/19

This is a table of options to update the list of acceptable source impact levels (ASIL), small quantity emission rates (SQER), and de minimis emission values in Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/2019-draft-asil-sqer-deminimis-values-wac-173-460

2019 draft ASIL, SQER, de minimis emission values (WAC 173-460) 01/17/19

This is a spreadsheet of options to update the list of acceptable source impact levels (ASIL), small quantity emission rates (SQER), and de minimis emission values in Chapter 173-460 WAC.

https://ecology.wa.gov/20190107-drafttable

Microsoft MWH Data Center 18AQ-E024 response to comments

This is the response to public comments report for the Microsoft MWH Data Center 18AQ-E024

https://ecology.wa.gov/20181024mwh_rtc

Vantage Data Centers agreed order 18AQ-E043 and tech support doc.

This is the September 2018 agreed order and technical support for Vantage Data Centers in Quincy.

https://ecology.wa.gov/20180910vantagedatacenter18aq-e043

Microsoft MWH Data Center Expansion Approval Order 18AQ-E024

This is the Microsoft MWH Data Center Expansion 03/04/05/06 Approval Order 18AQ-E024

https://ecology.wa.gov/20181023mwh_ao18aq-e024

2019 Draft ASIL Summary List (WAC 173-460) 03/07/19

This is the 3/7/19 draft summary list of Acceptable Source Impact Levels (ASIL) in Chapter 173-460 WAC.

https://ecology.wa.gov/2019-draft-asil-summary-list-wac-173-460-03-07-1

2019 Draft Acceptable Source Impact Levels (ASIL) Summary List (WAC 173-460) 02/15/19

This is the 2/15/19 draft summary list of Acceptable Source Impact Levels (ASIL) in Chapter 173-460 WAC.

https://ecology.wa.gov/2019-draft-asil-summary-list-wac-173-460-02-15-1

Microsoft MWH Technical Support Document

This is the technical support document for Microsoft MWH Data Center's 03/04/05/06 expansion.

https://ecology.wa.gov/20181023mwh_tsd

CyrusOne Data Center Second-Tier Health Impact Assessment

This is the second-tier health impact assessment report prepared by Landau Associates for CyrusOne Data Center.

https://ecology.wa.gov/20181226cyrusonehialandau

2019 Final Table of Toxic Air Pollutants (WAC 173-460) 12/23/19

This is the 12/23/19 adopted table of toxic air pollutants listed in Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/tapstable122319

2019 Proposed Table of Toxic Air Pollutants (WAC 173-460) 06/03/19

This is the 6/3/19 proposed table of toxic air pollutants listed in Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/2019-proposed-table-of-toxic-air-pollutants-wac-1