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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Microsoft MWH Data Center approval order (notice of construction permit)

This is the September 27, 2022 air quality approval order (notice of construction permit) for Microsoft MWH Data Center.

https://ecology.wa.gov/20220937microsoftmwh22aqe035

Microsoft Columbia Data Center approval order (notice of construction permit)

This is the September 27, 2022 air quality approval order (notice of construction permit) for Microsoft Columbia Data Center.

https://ecology.wa.gov/20220927microsoftcolumbiadata-center22aqe006

Vantage Data Centers approval order (notice of construction permit)

This is the October 5, 2022 air quality approval order (notice of construction permit) for Vantage Data Centers.

https://ecology.wa.gov/20221005vantagedatacenters22aqe009