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 Preliminary Determination 19AQ-E031

This is the preliminary determination for the revision to Microsoft MWH Data Center's 2018 approval order.

https://ecology.wa.gov/201907mwhpd19aqe031

Microsoft MWH FAQ Sheet

This is the general information and FAQ sheet for Microsoft MWH's 2018 permit revision.

https://ecology.wa.gov/20190601mwhfaqsheet

Microsoft MWH Technical Support Document for 19AQ-E031

This is the technical support document for Microsoft MWH's Data Center 2018 permit revision.

https://ecology.wa.gov/20190524mwhtsd19aqe031

Microsoft MWH NOC Application Approval Order amendment

This is the notice of construction approval order amendment request for Microsoft MWH.

https://ecology.wa.gov/20190508mwhnocapp

Sabey Data Center 2020 NOC App

This is the 2020 Notice of Construction Application for Sabey Data Center in Quincy

https://ecology.wa.gov/20200413sabeynocapp

Sabey Data Center 2020 Trinity HIA

This is the 2020 Health Impact Assessment by Trinity Consultants for Sabey Data Center in Quincy.

https://ecology.wa.gov/20200403sabeyhiatrinity

Vantage Data Center Health Impact Assessment (Second Tier Review) Recommendation, April 2022

This is the April 2022 Health Impact Assessment (Second Tier Review) Recommendation for Vantage Data Center.

https://ecology.wa.gov/202204vantagetier2rec

Grant Application for Diesel to Zero-Emission Refuse Vehicles, Street Sweepers, PCHE, and Freight Switchers: Frequently Asked Questions, July 17, 2023

This is the July 2023 frequently asked questions (FAQ) about the grant for zero-emission refuse vehicles,street sweepers, port cargo handling equipment, and freight switcher locomotives.

https://ecology.wa.gov/202307vwzevfaq

20230816ColvilleAQA

This is August 16, 2023 air quality advisory for the Colville Reservation.

https://ecology.wa.gov/20230816colvilleaqa

Application checklist for Level 2 EV charging, July 2024

This is the July 2024 application checklist for Level 2 EV charging stations.

https://ecology.wa.gov/202407ev2checklist

Volkswagen Federal Settlement Grant Level 2 guidelines

This notice announces funding available to help increase level 2 charging access across Washington State where drivers are likely to spend at least one to four hours..

https://ecology.wa.gov/202309ev2guidelines

Level 2 Grant application instructions

Application instructions for Level 2 grant funding: Charge Where You Are

https://ecology.wa.gov/202309ev2instructions

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

20231103ColvilleBurnBan

This is November 3, 2023 burn ban for the Colville Reservation.

https://ecology.wa.gov/20231103colvilleburnban

2024-25 Budget for Air Quality Registration

This is the 2024-2025 budget for air quality registration.

https://ecology.wa.gov/2024-25registrationbudget

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

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

Example terms and conditions for Ecology grants

This is the July 2024 example terms and conditions document for Ecology grants.

https://ecology.wa.gov/202407exampletermscond

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