Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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Air Quality data for Intalco Storymap

A table showing the number of days in each Air Quality Index category near Intalco

https://ecology.wa.gov/20200414-intalcostorymap

2017 and 2018 air quality days

A color coded chart showing the air quality days from good to very unhealthy for 2017 and 2018.

https://ecology.wa.gov/2019aqigraphic1718-alt

VW federal Electric School Bus Grant Awards

A breakdown of VW federal grant awards for electric school buses by county and school district.

https://ecology.wa.gov/asset-collections-doc-assets-air-quality-vw-20200427-vwfed-elecschoolbusawards-alt

Table of ASIL, SQER, and de minimis emission values – WAC 173-460-150 (Effective 12-23-2019)

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

https://ecology.wa.gov/table-of-asil-sqer-and-de-minimis-emission-value

How can I protect my health at different AQI values

A color coded chart with numerical values telling what actions to take to protect your health during an air quality event.

https://ecology.wa.gov/2019aqigraphic-alt

Washington Emissions Inventory Reporting System (WEIRS) Emissions Inventory Codes

Emissions Inventory Codes for Washington Emissions Inventory Reporting System (WEIRS), 12/20/19

https://ecology.wa.gov/20191220emissionsinventorycodes

Questions and Answers - Electric vehicle charging infrastructure along high-traffic corridors

Information on grant opportunities to add electric vehicle charging infrastructure on major transportation corridors in Washington.

https://ecology.wa.gov/20200107-vwfederalcorridorfaq

Microsoft MWH Data Center Approval Order No. 20AQ-E005

This is the air quality permit No. 20AQ-E005 for Microsoft MWH Data Center in Quincy.

https://ecology.wa.gov/20200227mwhao20aqe005

Microsoft Columbia Approval Order No. 20AQ-E002

This is the air quality approval order 20AQ-E002 for Microsoft Columbia data center in Quincy.

https://ecology.wa.gov/20200206microsoftcolumbia20aqe002

Microsoft Columbia C06, Quincy, Preliminary Determination

This is the preliminary determination for the Microsoft Columbia expansion, C06.

https://ecology.wa.gov/20191209mscolumbiapd

Microsoft Columbia C06, Quincy, NOC Application

This is the notice of construction application for Microsoft Columbia's C06 expansion

https://ecology.wa.gov/20191206mscolumbianocappc06

Sabey Data Center 2020 NOC App

This is the 2020 Notice of Construction Application for Sabey Data Center in Quincy

https://ecology.wa.gov/20200413sabeynocapp

Sabey Data Center 2020 Trinity HIA

This is the 2020 Health Impact Assessment by Trinity Consultants for Sabey Data Center in Quincy.

https://ecology.wa.gov/20200403sabeyhiatrinity