U.S. Environmental Protection Agency Region 5 has cited CertainTeed Corp. for alleged clean-air violations at the company's roofing materials manufacturing plant in Shakopee, Minn.
EPA alleges that CertainTeed failed to include two of its manufacturing processes in its state operating permit application and has been operating those processes without a permit. EPA also alleges that two other processes have been operated without the emission control efficiencies required in its state operating permit.
CertainTeed has 30 days from receipt of the notice to meet with EPA to discuss resolving the allegations.
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