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 - 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

Yahoo Data Center - Notice of Construction application

Notice of Construction application (revised) for Yahoo Data Center, 12/23/15

https://ecology.wa.gov/yahoorevisednoc12232015

Yahoo Data Center - Revised Risk Analysis

Risk Analysis for Yahoo Data Center (revised), 12/23/15

https://ecology.wa.gov/yahoorevisedriskanalysis12232015

Vantage Data Center - Health Impact Assessment Recommendation

Health Impact Assessment (Second Tier Review) Recommendation, 11/30/12

https://ecology.wa.gov/b-updated-vantage-tier2-recommendation-11302012

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

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

Vantage Notice of Construction Revised Tier 2

This is the Vantage Data Center's revised final 2012 Notice of Construction support document for Tier 2 review.

https://ecology.wa.gov/20121128nocrevtier2

Microsoft Oxford Data Center - Legal Notice

Legal notice for Microsoft Oxford, 11/3/16

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

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

Vantage Data Center - Technical Support Document for Health Impact Assessment

Risk Analysis Technical Support Document for Health Impact Assessment (Second Tier Review) for Vantage Data Center, 11/28/12

https://ecology.wa.gov/a-revised-final-tier2-risk-analysis-vantage-112820