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The gate to the former dump site on the Woodbury-Cottage border used by 3M. The MPCA has OK'd a recovery plan designed by 3M to clean up the site. Staff photo by Hank Long

MPCA approves 3M plan to clean up Woodbury dump site

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The Minnesota Pollution Control agency has officially signed off on a recovery plan designed by 3M to clean up a dump site on the border of Woodbury and Cottage Grove.


3M used the former dump site in the 1960s to dump waste from its chemolite plant in Cottage Grove.

Much of the waste contained perfluorochemicals, which were once manufactured at the plant.

In 2007 3M signed a consent order with the MPCA to clean up the site along with others in the east metro.

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