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.

See more about this collection...

Yahoo Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for Health Impact Assessment (Third Tier Review) for Yahoo Data Center, 2/8/11

https://ecology.wa.gov/yahoo-tier3-tsd-2-8

Microsoft Oxford Data Center - Legal Notice

Legal notice for Microsoft Oxford Data Center, 10/6/16

https://ecology.wa.gov/mwh-legal-10062016

Vantage 2012 Notice of Construction Appendices

This document contains all the appendices for Vantage Data Center's notice of construction application from 2012.

https://ecology.wa.gov/20121018nocappendices

Microsoft Oxford Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Microsoft Oxford Data Center, 9/27/16

https://ecology.wa.gov/mwh-tier2ltr-09272016

Microsoft Oxford Data Center - Health Impact Assessment (second revised)

Second Revised Health Impact Assessment for Microsoft Oxford Data Center, 9/27/16

https://ecology.wa.gov/mwh-hiarec-09272016

Microsoft Oxford Data Center - Draft Notice of Construction permit

Draft notice of construction permit for Microsoft Oxford Notice of Construction Application, 9/22/16

https://ecology.wa.gov/mwh-pd-09222016

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, 9/22/16

https://ecology.wa.gov/mwh-tsd-09222016

Microsoft Oxford Data Center - Completeness letter

Completeness determination letter for Microsoft Oxford Data Center

https://ecology.wa.gov/mwh-completeness-09202016

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

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

Microsoft Oxford Data Center - Notice of Construction permit

Notice of Construction Permit for Microsoft Oxford Data Center, 8/15/14

https://ecology.wa.gov/microsoftoxford-noc

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

Notice of Construction Technical Support Document for Microsoft Oxford Data Center, 8/15/14