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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Air Operating Permit Report for Fiscal Years 2024 and 2025, October 2023

This is the workload analysis and budget report for the Air Operating Permit Program for Fiscal Years 2024 and 2025, October 2023 version.

https://ecology.wa.gov/202310aopreportfy24

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

Air Operating Permit Report for Fiscal Years 2026 and 2027, June 2024

This is the workload analysis and budget report for the Air Operating Permit Program for Fiscal Years 2026 and 2027, June 2024 version.

https://ecology.wa.gov/202406aopreportfy26

Vantage Data Center notice of construction (NOC) permit and technical support document

This is the August 2023 air quality notice of construction permit (approval order) and technical support document for Vantage Data Center.

https://ecology.wa.gov/20230829vantagenocpermit

Vantage Data Center Health Impact Assessment (Tier 2 review) letter, April 27, 2022

This is the April 27, 2022 health impact assessment (Tier 2 review) letter for Vantage Data Center.

https://ecology.wa.gov/20220427vantagetier2ltr

Bale Burn BMP

This is the best management practice (BMP) for bale burns, valid through June 30, 2025.

https://ecology.wa.gov/20240701balebmp

Cereal Grain BMP

This is the best management practice (BMP) for cereal grain, valid through June 30, 2025.

https://ecology.wa.gov/20240701cerealbmp

Non-Cereal BMP

This is the best management practice (BMP) for non-cereal grain, valid through June 30, 2025.

https://ecology.wa.gov/20240701noncerealbmp

Orchard crops BMP

This is the best management practice (BMP) for orchard crops, valid through June 30, 2025.

https://ecology.wa.gov/20240701orchardbmp

Non-orchard pile BMP

This is the best management practice (BMP) for non-orchard pile, valid through June 30, 2025.

https://ecology.wa.gov/20240701pilebmp

Spot BMP

This is the best management practice (BMP) for spot burns, valid through June 30, 2025.

https://ecology.wa.gov/20240701spotbmp

CyrusOne Data Center notice of construction (NOC) permit and technical support document

This is the August 2024 air quality notice of construction permit (approval order) and technical support document for CyrusOne Data Center.

https://ecology.wa.gov/202420812cyrusonenocpermit

H5 Data Center notice of construction (NOC) permit

This is the 2022 air quality notice of construction permit (approval order) for H5 Data Center.

https://ecology.wa.gov/20220309h5nocpermit

H5 Data Center Preliminary Determination

This is the draft preliminary determination for H5 Data Center

https://ecology.wa.gov/20211110h5draftpreldet

H5 Data Center Notice of Construction Application

This is the notice of construction application for H5 Data Center

https://ecology.wa.gov/20211110h5nocapp

H5 Data Center Health Impact Assessment Report

This is the Health Impact Assessment Report for H5 Data Center

https://ecology.wa.gov/20211110h5healthimpactassessment

H5 Data Center Notice of Construction Application DOE

This is the notice of construction application for H5 Data Center from Ecology

https://ecology.wa.gov/20211110h5nocappdoe

H5 Data Center Health Impact Assessment Recommendation

This is the Health Impact Assessment Recommendation for H5 Data Center

https://ecology.wa.gov/20211110h5tier2hiarec

H5 Data Center Tier 2 Letter

This is the Tier 2 letter for H5 Data Center

https://ecology.wa.gov/20211110h5tier2ltr

H5 Data Center Technical Support Document

This is the Technical Support Document for H5 Data Center

https://ecology.wa.gov/2021h5tsd