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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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 application

Notice of Construction application for Yahoo Data Center, 6/9/17

https://ecology.wa.gov/yahoonocapp060917

Vantage Data Center - Health Impact Assessment Recommendation

Health Impact Assessment (Second Tier Review) Recommendation for Vantage Data Center, 5/11/17

https://ecology.wa.gov/vantage-hiarec-051117ada

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

Vantage Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Vantage Data Center, 5/11/17

https://ecology.wa.gov/vantage-tier2ltr-final-051117ada

Vantage Data Center - Revised Health Impact Assessment response

Revised Health Impact Assessment (Second Tier Review) response for Vantage Data Center, 11/16/16

https://ecology.wa.gov/vantage-revfinal-2ndtier-ra-111616ada

Vantage Data Center - Notice of Construction application

Notice of Construction application for Vantage Data Center, 8/10/16

https://ecology.wa.gov/vantage-noc-app-supprpt-081016ada

Microsoft Oxford Data Center - Notice of Construction permit

Microsoft Oxford Notice of Construction Permit, 1/26/17

https://ecology.wa.gov/mwh-ao-01262017

Microsoft Oxford Data Center - Technical Support Document

Technical Support Document for Microsoft Oxford Data Center, 1/26/17

https://ecology.wa.gov/mwh-tsd-01262017

Microsoft Oxford Data Center - Legal Notice

Legal notice for Microsoft Oxford, 11/3/16

https://ecology.wa.gov/mwh-legalnotice-11032016

Microsoft Oxford Data Center - Legal Notice

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

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

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

NTT Data Services notice of construction (NOC) permit

This is the May 2017 amended air quality notice of construction permit for NTT Data Services in Quincy.

https://ecology.wa.gov/20170504nttdatanocpermit