The Potlatch Corp. Cloquet pulp and paper mill was assessed a $12,500 penalty for air quality rules and facility permit violations, the Minnesota Pollution Control Agency announced Wednesday.
The violations included a carbon monoxide emissions violation during testing of bark fuel combustion in a facility power boiler; an inability to certify the lime kiln's in-stack total reduced sulfur emissions monitor; late performance testing of the lime kiln's total reduced sulfur emissions; late submittal of an MPCA-required air quality test frequency plan; and excessive sulfur emissions and fuel oil burned in power boilers during the first half of 2000.
The MPCA has since approved Potlatch's proposed compliance plan to limit power boiler carbon monoxide emissions during an interim period while it conducts studies related to higher facility power boiler emissions limits. These higher limits would allow Potlatch to burn significantly more bark fuel, a renewable resource, and rely less on fossil fuels, such as natural gas and fuel oil.
Potlatch has also agreed to install emissions monitors in the power boiler stacks, certify the lime kiln monitor and conduct further carbon monoxide emissions testing.
Minnesota law requires owners and operators of facilities with the potential to release air pollutants to have MPCA permits. They must also carefully monitor and maintain equipment because emissions exceeding state standards can degrade air quality. The MPCA offers outreach and training to help facilities meet permit requirements.
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