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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H5 Data Center notice of construction (NOC) permit

This is the November 2024 air quality notice of construction permit (approval order) for H5 Data Center in Quincy.

https://ecology.wa.gov/20241126h5nocpermit

H5 Data Centers notice of construction (NOC) application

This is the air quality notice of construction application for H5 Data Centers in Quincy.

https://ecology.wa.gov/20240402h5nocapprev

Microsoft Columbia Data Center notice of construction (NOC) application

This is the air quality notice of construction application for H5 in Quincy.

https://ecology.wa.gov/20241001mscolumbianocapp

Microsoft Columbia Data Centers draft notice of construction (NOC) permit

This is the draft notice of construction (NOC) permit for Microsoft Columbia Data Center in Quincy.

https://ecology.wa.gov/202412mscolumbianocpermit

Microsoft Columbia Data Center technical support document for a draft notice of construction (NOC) permit

This is the technical support doMicrosoft Columbia Data Center draft notice of construction permit.

https://ecology.wa.gov/202412mscolumbianoctsd

Dell Data Center - Notice of Construction permit

Notice of Construction permit for Dell Data Center, 8/5/11

https://ecology.wa.gov/dellquincy11aq-e421-final

Dell Data Center - Health Impact Assessment letter

Health Impact Assessment (Second Tier Review) Letter for Dell Data Center, 6/10/11

https://ecology.wa.gov/delltier2-approvalletter

Dell Data Center - Technical Support Document for Health Impact Assessment

Technical Support Document for the Health Impact Assessment (Second Tier Review) for Dell Data Center, 6/10/11

https://ecology.wa.gov/delltier2-tsd

Dell Data Center - Technical Support Document for Notice of Construction permit

Technical Support Document for Notice of Construction permit for Dell Data Center, 6/9/11

https://ecology.wa.gov/dellquincy-noc-tsd-final

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

SGL Composites draft Air Operating Permit

This is the draft air operating permit for SGL Composites in Moses Lake.

https://ecology.wa.gov/202412sglaopdraft

SGL Composites draft Statement of Basis for Air Operating Permit

This is the draft Statement of Basis for an Air Operating Permit for SGL Composites in Moses Lake.

https://ecology.wa.gov/202412sglsofbdraft

Technical Support Document for air quality general order for dry cleaners, May 20, 2006

This is the technical support document for the air quality general order for dry cleaners, May 20, 2006.

https://ecology.wa.gov/20060520drycleanerstsd

Air quality general order for dry cleaners, October 6, 2006

This is the air quality general order for dry cleaners, October 6, 2006.

https://ecology.wa.gov/20061006godrycleaners

Air quality general order for auto body shops

This is the air quality general order for auto body shops.

https://ecology.wa.gov/20080425gobodyshops

Air quality general order for small water heaters and steam-generating boilers, August 8, 2008

This is the air quality general order for small water heaters and steam-generating boilers, August 8, 2008.

https://ecology.wa.gov/20080808goheatersboilers

Technical support document supplement for air quality general order for auto body shops.

This is the technical support document supplement for the air quality general order for auto body shops.

https://ecology.wa.gov/200808bodyshopstsd

Air quality general order for asphalt plants

This is the air quality general order for asphalt plants.

https://ecology.wa.gov/20110418goasphaltplants