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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Draft Washington State Implementation Plan (SIP) Revision: Redesignation to Attainment and First 10-Year Maintenance Plan for the Intalco-Ferndale Sulfur Dioxide Nonattainment Area

This is the draft Washington State Implementation Plan (SIP) Revision: Redesignation to Attainment and First 10-Year Maintenance Plan for the Intalco-Ferndale Sulfur Dioxide Nonattainment Area.

https://ecology.wa.gov/202403intalcoso2maintsip

CyrusOne notice of construction (NOC) application

This is the air quality notice of construction application for CyrusOne Data Center in Quincy.

https://ecology.wa.gov/20240509cyrusonenocapp

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