Public Comment Form

Commenting open: December 30, 2024 12:00AM PT - February 27, 2025 11:59PM PT.

Microsoft Columbia Data Center Dec. 30, 2024, 12 a.m.-Feb. 27, 2025, 11:59 p.m. (extended from Feb. 4, 2025) public comment

We have EXTENDED the public comment period and ADDED public hearing information.


This is a 30-day public comment period for the review of Microsoft Columbia Data Center's draft permit, technical support document, and notice of construction (NOC) application with associated documents.


We propose to approve Microsoft Columbia Data Center’s air quality notice of construction (NOC) application. Microsoft Corporation – Columbia Data Center requested to update their existing air permit:


  • Match current operations related to yearly load averages
  • Run more generators in bypass mode — 5 generators instead of 2, but for a shorter amount of time

Short-term increases of emissions and modeling of emissions from nonroad engines were evaluated. There were no increases of annual emissions from this change.


Microsoft Columbia Data Center is located at 501 Port Industrial Parkway, in Quincy.


We determined this proposal satisfies the requirements of Chapter 173-400 WAC. We plan to approve the application.


The public is invited to comment.


Public hearing (English and Español (Spanish))

We will have a Spanish interpreter available.


Date/Time: Thursday, February 20, 2025

  • 5:30 p.m. Doors open
  • 6:00 p.m. Presentation, with question-and-answer time
  • 6:45 p.m. Public hearing


Location: Quincy Business and Event Center, 101 F Street SW, Quincy (directions)


View project documents online.


Comment period ends Tuesday, February 27, 2025, 11:59 p.m.






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Next steps:
After the public period ends, we will:
  • Review and respond to comments.
  • Issue the air permit.



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