Public Comment Form

Commenting open: July 01, 2025 12:00AM CT - July 31, 2025 11:59PM CT.

Tiller Corp - Maple Grove Mining & Processing Facility - Air Permit

We invite you to comment on the draft air quality permit for Tiller Corp - Maple Grove Mining & Processing Facility


Tiller Corporation owns and operates the pits and hot mix asphalt plant at the Tiller Maple Grove Facility, a mining and construction sand and gravel processing facility. The facility consists of a sand and gravel spread, recycled concrete and asphalt spread, screening spread, bituminous aggregate spread, and a hot mix asphalt spread.

 

The draft air permit authorizes replacement of an existing drum dryer with a new drum dryer.


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 Tarik Hanafy
520 Lafayette Road
Saint Paul, MN 55155

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