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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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

Yahoo Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Yahoo Data Center, 2/17/16

https://ecology.wa.gov/yahoogenesistier2ltr02172016

Yahoo Data Center - Health Impact Assessment

Health Impact Assessment (Second Tier Review) for Yahoo Data Center, 2/17/16

https://ecology.wa.gov/yahoogenesishis02172016

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

Sabey Intergate Data Center - Request for revisions for Notice of Construction permit

Request for revisions to Notice of Construction permit for Sabey Intergate Data Center, 3/4/15

https://ecology.wa.gov/revrequestao030415

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 MWH Data Center Expansion PD

This is the Microsoft MWH Data Center expansion preliminary determination.

https://ecology.wa.gov/20180607mwh_pd2

Microsoft MWH Data Center 2nd Tier HIA

This is the 2nd Tier Health Impact Assessment for the Microsoft Data Center expansion in Quincy.

https://ecology.wa.gov/20180606mwh_hia

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

Sabey Intergate Data Center - Updated Health Impact Assessment

Updated Health Impact Assessment (Second Tier Review) Recommendation for Sabey Intergate Data Center, 3/3/15

https://ecology.wa.gov/updaterpt2ndtier

Vantage Data Center - Health Impact Assessment Protocol

Methods and procedures to follow for a Health Impact Assessment (Second Tier Review) for Vantage Data Center, 3/7/16

https://ecology.wa.gov/vantage-hia-protocol-030716ada

Yahoo Data Center - Draft Notice of Construction permit

Draft Notice of Construction permit for Yahoo Data Center, 2/5/16

https://ecology.wa.gov/yahoopd02052016

Yahoo Data Center - Draft Technical Support Document for Notice of Construction permit

Draft Technical Support Document for Notice of Construction permit for Yahoo Data Center, 2/5/16

https://ecology.wa.gov/yahoodrafttsd02052016

Vantage Data Center - Air Dispersion Modeling Protocol

Protocol and methods for air dispersion modeling for a Notice of Construction application for Vantage Data Center, 2/25/16

https://ecology.wa.gov/vantage-modeling-protocol-022516ada

Sabey Intergate Data Center - Notice of Construction permit

Notice of Construction Permit for Sabey Intergate Data Center, 8/26/11

https://ecology.wa.gov/sabeyquincy-order-11aq-e424

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

Microsoft MWH Data Center Notice of Construction Application

This is the notice of construction application submitted by Microsoft for the MWH Data Center in Quincy.

https://ecology.wa.gov/20180606mwh_noc

Microsoft Oxford Data Center - Notice of Construction permit

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

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

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

Vantage Data Center - Notice of Construction permit and technical support document

Notice of Construction permit and Technical Support Document for Vantage Data Center, 3/18/13

https://ecology.wa.gov/vantagefinalpermit