Public Comment Form

Microsoft Columbia Data Center 30-day Public Comment Period June 15 - July 20, 2022

​Para asistencia en español:

This is a 30-day public comment period for the review of Microsoft Columbia Data Center's draft permit and technical support documents.

Microsoft Corporation – Columbia Data Center is an existing data center with 40 diesel generators and two banks of cooling towers. Columbia is proposing to install six new emergency generators and is requesting to use renewable diesel as well as the use of standard diesel for all existing and new generators. Columbia plans to voluntarily install on the new generators, selective catalytic reduction controls for nitrogen oxides and diesel particulate filter controls for particulate matter. Emission increases from this project include 0.50 tons per year of nitrogen oxides, 0.78 tons per year carbon monoxide, 0.11 tons per year particulate matter, 0.11 tons per year volatile organic compounds and 0.01 tons per year of diesel engine exhaust particulate.

We determined this proposal satisfies the requirements of Chapter 173-400 WAC. 

An online virtual public hearing will be held if we determine there is significant public interest. An online virtual public hearing is scheduled for July 18, 2022 at 6 pm . If no written requests for the online virtual public hearing are received by June 30, 2022, then the hearing will be cancelled.

View project documents online.

Comment period ends July 20, 2022.

Contact Information

All fields are optional unless otherwise indicated.

Submitted by Value

First Name (Required)

Last Name (Required)

Address (Required)

City (Required)


ZIP (Required)

Email (Required)

Your Comment

Comments are due July 20, 2022 by 11:59 p.m. Please enter your comments in the "Insert comments" space below. To submit attachments, use the "Upload a File" button. Then hit "Continue" to review your comments.

To submit comments for a group please visit our Commenting Tips webpage .

Next steps: After the close of the comment period, Ecology will review and respond to comments.

This comment form is for the purpose of submitting a comment to the Washington Department of Ecology. Commenter contact information is optional. Contact information is necessary if you want to receive future notices or responses related to this topic. Any information (e.g., personal or contact info) you provide on this comment form or in an attachment may be publicly disclosed and posted on the internet.

*Uploading a file is optional*

You may attach up to five 30 MB files to accompany your submission. Allowed formats are pdf, jpg, jpeg, png, txt, gif, doc, docx. If you experience technical difficulties submitting your comment, please contact the person listed at the bottom of this page.

Thank you for subscribing to the Microsoft Columbia Data Center 30-day Public Comment Period June 15 - July 20, 2022 mailing list.