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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Washington Department of Information Services Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for Health Impact Assessment (Second Tier Review) for Washington Department of Information Services Data Center, 9/16/10

https://ecology.wa.gov/finaldistier2-09-16-2010

T-Mobile Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for Health Impact Assessment (Second Tier Review) for T-Mobile Data Center, 7/17/08

https://ecology.wa.gov/t2t-mobile-tsd

VMware Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for the Health Impact Assessment (Second Tier Review) for VMware Data Center, 7/17/08

https://ecology.wa.gov/t2vmware-tsd

Dell Data Center Notice of Construction (NOC( permit

Notice of Construction (NOC) permit for Dell Data Center, 8/5/11

https://ecology.wa.gov/dellquincy11aq-e421-final

Yahoo Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for Health Impact Assessment (Second Tier Review) for Yahoo Data Center, 10/8/07

https://ecology.wa.gov/t2yahootsd

Blackrock-Sabey Data Centers - Technical Support Document for Health Impact Assessment

Technical Support Document for Health Impact Assessment (Second Tier Review) for Blackrock and Sabey Data Centers, 10/5/10

https://ecology.wa.gov/tier2-tsd-blackrock-sabey-cl100510

Dell Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Dell Data Center, 6/10/11

https://ecology.wa.gov/delltier2-approvalletter

Dell Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for the Health Impact Assessment (Second Tier Review) for Dell Data Center, 6/10/11

https://ecology.wa.gov/delltier2-tsd

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

Technical Support Document for Notice of Construction permit for Dell Data Center, 6/9/11

https://ecology.wa.gov/dellquincy-noc-tsd-final

Microsoft Columbia Data Center - Notice of Construction permit

Notice of Construction permit for Microsoft Columbia Data Center, 10/26/10

https://ecology.wa.gov/msn-order10aq-e374

Microsoft Columbia Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for the Health Impact Assessment (Third Tier Review) for Microsoft Columbia Data Center, 8/20/10

https://ecology.wa.gov/ms-tier3-doc

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

Technical Support Document for Notice of Construction permit for Microsoft Columbia Data Center, 8/12/10

https://ecology.wa.gov/msnexpand2010-tsd-8-4

Sabey Intergate Data Center - Notice of Construction Technical Support Document

Notice of Construction Technical Support Document for Sabey Intergate Data Center, 6/24/11

https://ecology.wa.gov/sabeyquincy-tsd-6-24

Sabey Intergate Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Sabey Intergate Data Center, 6/22/11

https://ecology.wa.gov/sabey-2ndtier-letter-to-karen-wood-06222011

Sabey Intergate Data Center - Health Impact Assessment

Health Impact Assessment (Second Tier Review) Technical Support Document for Sabey Intergate Data Center, 6/22/11

https://ecology.wa.gov/sabeyquincy-2ndtier-tsd-06222011-final

Yahoo Data Center - Notice of Construction permit

Notice of Construction permit for Yahoo Data Center, 3/28/11

https://ecology.wa.gov/yahoo-ord-11aq-e399

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

Vantage Data Center Health Impact Assessment (Second Tier Review) Recommendation, April 2022

This is the April 2022 Health Impact Assessment (Second Tier Review) Recommendation for Vantage Data Center.

https://ecology.wa.gov/202204vantagetier2rec