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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Spokane County's Second 10-Year Limited Maintenance Plan for Carbon Monoxide

State Implementation Plan Revision for Spokane County Second 10-Year Limited Maintenance Plan for Carbon Monoxide

https://ecology.wa.gov/spokaneco

Baseline modeling inventory for Prevention of Significant Deterioration-permitted facilities

This is a spreadsheet of the baseline modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities.

https://ecology.wa.gov/201603prevsignificantdeteriorationbaseline

2014 emissions inventory for Prevention of Significant Deterioration-permitted facilities

This is the spreadsheet of 2014 emissions inventory for facilities with a Prevention of Significant Deterioration permit.

https://ecology.wa.gov/201603prevsignificantdeteriorationinventory

Input data for modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities

This is a spreadsheet of the input data for modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities.

https://ecology.wa.gov/201603prevsignificantdeteriorationsupp

Prevention of Significant Deterioration baseline emissions inventory technical support

This is the technical support document for the baseline emissions inventory for facilities with a Prevention of Significant Deterioration permit.

https://ecology.wa.gov/201603prevofsignificantdeteriorationtechsupport

Fireplaces Certified in Washington

List of fireplaces that meet Washington standards

https://ecology.wa.gov/wood-fireplaces

Volkswagen (VW) Notice of Penalty - State

State Notice of Penalty for Volkswagen (VW)

https://ecology.wa.gov/07082016vwnoticeofpenalty-state

Clean Air Rule: Potentially Eligible Parties

Organizations that emit 70,000 metric tons of carbon pollution or more are regulated by the Clean Air Rule. This is a list of organizations that potentially meet this criteria.

https://ecology.wa.gov/potentialbussinessescoveredbycar

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 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

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

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

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

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

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