Public Comment Form

Commenting open: February 15, 2025 06:00AM CT - March 17, 2025 11:59PM CT.

Viracon - Air Permit

We invite you to comment on the draft air quality permit for Viracon Inc.


Viracon manufactures architectural glass at its facility in Owatonna where it produces emissions primarily from coating and adhesive application equipment.


The draft Part 70 permit replaces the facility’s Option 2 capped air permit and authorizes an increase in volatile organic compound and hazardous air pollutant emissions from the existing operations. Additionally, the draft permit establishes limits on the existing coating and adhesive application equipment to reduce volatile organic compound emissions. 


An air quality operating permit is required for certain existing facilities or the construction of new facilities that have the potential to emit a significant level of any regulated pollutant. The permit includes all requirements for operation and procedures, applicable rules, emission standards, monitoring, recordkeeping, and reporting. If additional conditions change and modifications are necessary, the MPCA may review and amend the permit.



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Thank you for providing feedback on this project. We value your comments and will use them to assess this project further.


In your comments, please state your interest in the permit application or the draft permit; the explicit actions you wish the MPCA to take, including specific references to the section of the draft permit you believe should be changed; and the reasons supporting your position, stated with sufficient specificity as to allow the MPCA to investigate the merits of the position.


If you want to submit a letter, you can upload the letter on this website or submit it via US Mail to the following address:


Minnesota Pollution Control Agency
c/o Kate Mahonen
520 Lafayette Road
Saint Paul, MN 55155

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