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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Fire Mountain Farms 2015 application form

2015 application for coverage under the general permit for biosolids management

https://ecology.wa.gov/2015-application-form

Titan Data Center Moses Lake Approval Order 15AQ-E616

This is the 2015 air quality permit approval order for Titan Data Center in Moses Lake.

https://ecology.wa.gov/20150520titan15aqe616

Sabey Intergate Data Center - Draft Notice of Construction permit

Draft notice of construction permit for Sabey Intergate Data Center, 11/16/15

https://ecology.wa.gov/prelim

Sabey Intergate Data Center - Health Impact Assessment letter

Health impact assessment (Second Tier Review) letter for Sabey Intergate Data Center, 11/16/15

https://ecology.wa.gov/2ndtierrev

Sabey Intergate Data Center - Revised Health Impact Assessment

Revised Health Impact Assessment for Sabey Intergate Data Center, 11/16/15

https://ecology.wa.gov/revhistmt

Sabey Intergate Data Center - Draft Notice of Construction Technical Support Document

Draft Notice of Construction Technical Support Document for Sabey Intergate Data Center, 11/16/15

https://ecology.wa.gov/tsd111615

Sabey Intergate Data Center - Appendix E of Notice of Construction permit

Appendix E of Notice of Construction application for Sabey Intergate Data Center, 6/4/15

https://ecology.wa.gov/appxe

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

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

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

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

2015 Fact Sheet Sand and Gravel General Permit

The Fact Sheet serves as the documentation of the legal, technical, and administrative decisions Ecology has made in the process of reissuing the permit.

https://ecology.wa.gov/2015-fact-sheet

2015 All Appeal Comments

This is all of the appeal comments that were provided

https://ecology.wa.gov/2015allappealcomments

2014 Pretreatment Plan

2014 Heckes Clam Inc Z. japonica Pretreatment Plan

https://ecology.wa.gov/2014wag993010pretrtplan