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3M dirt removal to start this month

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3M this month plans to begin the process of excavating thousands of cubic yards of soil from the 3M Cottage Grove manufacturing plant as part of a remedial effort to prevent further perfluorochemical contamination of the area's groundwater.

In 2006, the Minnesota Pollution Control Agency and 3M agreed to a settlement that called on the company to clean former dump sites where perfluorochemicals had been deposited, including the 3M Cottage Grove plant.

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