Public Comment Form

Commenting open: December 24, 2024 06:00AM CT - January 23, 2025 11:59PM CT.

CHS Fairmont - Air Permit

We invite you to comment on the draft air quality permit for CHS Inc. in Fairmont.


CHS Inc. operates an oilseed processing plant in Fairmont that produces soybean oil and soybean co-products. The facility produces air emissions from the use of mills and extractors used to process soybeans.


The draft air permit authorizes the replacement of three underground hexane process tanks with larger tanks to allow for a longer useful tank life. The draft air permit limits volatile organic compound emissions from the tanks.


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 Jesse Loi
520 Lafayette Road
Saint Paul, MN 55155

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