"Although contaminants buried in the sediments of Green Bay may be out of sight, they should not be out mind, according to research published last month in the Journal of Great Lakes Research. Two invasive species – the quagga mussel and round goby – can allow a group of toxic chemicals deposited more than 45 years ago to reenter the food web, passing them to predatory fish and possibly people.

Between 1954 and 1971, polychlorinated biphenyls, also known as PCBs, were discharged into the Lower Fox River in northeastern Wisconsin by manufacturers of carbonless copy paper, said Beth Olson, water program director for the Wisconsin Department of Natural Resources’ East District."

Holly Drankhan reports for Great Lakes Echo April 17, 2015. [2]