Air quality permits for review, published 09/24/2026
DES MOINES – The DNR Air Quality Bureau has the following draft permits up for review. The permits help protect Iowans’ health and the air where we live. DNR’s permitting staff review the applications to ensure facilities comply with state and federal air quality standards. The public has the right and is encouraged to comment on draft permits. DNR considers public comments before finalizing the permits. Submit comments in writing to the assigned permit writer before 4:30 p.m. on the last day of the comment period.
Title V Operating Permits
Title V Operating permits are reviewed and re-issued every five years. Facilities with a Title V permit have the potential to emit large amounts of air pollutants compared to other facilities. The five-year reviews are a federal requirement and ensure adequate monitoring is included in the permit. The DNR plans to issue Title V Operating Permits for the following facilities. Find permit details at www.iowadnr.gov/titlev-draft or through the Iowa EASY Air Public Inquiry Portal and then click on the Public Notice tab.
Floyd County
MidAmerican Energy Co. - Merl Parr CTs located at 301 11th Street, Charles City
The application was submitted to operate their existing Electric Services facility. The public comment period ends October 24.
Pottawattamie County
Bunge Corporation located at 19560 Bunge Ave, Council Bluffs
The application was submitted to operate their existing Soybean Oil Mills facility. The public comment period ends October 24.
Construction Permits
DNR engineers review and issue construction permits to facilities before they build new or modify existing sources of air pollution. The public may review the following air quality construction permits available online at https://idnraqrr.iowadnr.gov/ConPermitSearch or through the EASY Air Public Inquiry Portal and then click the Public Notice tab.
Lee County
Koch Fertilizer Wever, LLC (Koch) – 3550 180 th St, IA
Project No. 25-173
Koch manufactures ammonia, granulated urea, liquid urea, and urea ammonium nitrate. Koch proposes to modify the short-term hourly emission limit for nitrogen oxides (NO x ) from the Nitric Acid Plant (EU-05) to accurately account for transient emissions that occur during startup and shutdown periods. The Best Available Control Technology (BACT) annual emission limits and overall control requirements for NO x will remain unchanged.
Public comment period ends on October 23.
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