DES MOINES, Iowa (KCRG) - Prairie Farms has been fined $100,000 and has also agreed to install $1.4 million worth of pollution-control measures after violating air quality limits for 12 years.
The dairy's location in Luana admitted violating the limits is a consent decree with Iowa DNR and the Attorney General's Office.
Currently, Prairie Farms usees a whey dryer when producing swiss cheese. The dryer emits whey particles to the outside air during the process.
A petition by the state says in 2004 the dairy removed a baghouse, an air pollution control device to remove particulate matter.
In 2013, the DNR found the dairy had removed the baghouse without a construction permit.
In 2016 the dairy installed a dryer stack fan to reduce emissions.
Since then they have stayed in compliance with applicable emission limits.
As part of the consent decree, Prairie Farms said they would install a baghouse, which is expected to cost an estimated $1.4 million.
Previously the location in Luana was known under the name Swiss Valley Farms until Prairie Farms merged with them in April 2017.