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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Masonry heaters that meet Washington standards, October 10, 2016

This is the October 10, 2016 list of masonry heaters that meet Washington standards.

https://ecology.wa.gov/20161010masonryheaters

Pacific Northwest Volkswagen (VW) Zero-Emissions Vehicle (ZEV) Investment Proposal

Investment proposal for Pacific Northwest Volkswagen (VW) Zero-Emissions Vehicle (ZEV)

https://ecology.wa.gov/20161223pnwzevinvestmentproposal

Volkswagen (VW) Notice of Penalty - State

State Notice of Penalty for Volkswagen (VW)

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

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

2017 Baseline Carbon Intensities for Blended Fuels (WAC 173-424) 11-28-22

This is a spreadsheet of 2017 baseline carbon intensities for blended fuels, November 28, 2022 version.

https://ecology.wa.gov/2017-baseline-carbon-intensities-for-blended-f-2

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

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

2017 Baseline Carbon Intensities for Blended Fuels (WAC 173-424) 7-15-22

This is a spreadsheet of 2017 baseline carbon intensities for blended fuels, July 15, 2022 version.

https://ecology.wa.gov/2017-baseline-carbon-intensities-for-blended-f-1

2017 Baseline Carbon Intensities for Blended Fuels (WAC 173-424) 04-22

This is a spreadsheet of 2017 baseline carbon intensities for blended fuels, April 2022 version.

https://ecology.wa.gov/2017-baseline-carbon-intensities-for-blended-fuels

Microsoft Oxford Data Center - Notice of Construction permit

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

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

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

Microsoft Oxford Data Center - Legal Notice

Legal notice for Microsoft Oxford, 11/3/16

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

Microsoft Oxford Data Center - Legal Notice

Legal notice for Microsoft Oxford Data Center, 10/6/16

https://ecology.wa.gov/mwh-legal-10062016

Microsoft Oxford Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Microsoft Oxford Data Center, 9/27/16

https://ecology.wa.gov/mwh-tier2ltr-09272016

Microsoft Oxford Data Center - Health Impact Assessment (second revised)

Second Revised Health Impact Assessment for Microsoft Oxford Data Center, 9/27/16

https://ecology.wa.gov/mwh-hiarec-09272016

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

NTT Data Services notice of construction (NOC) permit

This is the May 2017 amended air quality notice of construction permit for NTT Data Services in Quincy.

https://ecology.wa.gov/20170504nttdatanocpermit