Health Consultation: National Gypsum Cement Kiln Dust Pile, Alpena (Alpena County), Michigan, June 11, 2009.

摘要

The National Gypsum Cement Kiln Dust (CKD) pile (site) is located along Thunder Bay, Lake Huron in the City of Alpena (Alpena County), Michigan. The pile is waste from cement production, CKD, which was dumped at the site, beginning in the 1950s. The CKD pile extended offshore, into the bottom land of Thunder Bay. The cement waste contains metals and other inorganic contaminants that have leached into the groundwater beneath the pile, which has discharged into Thunder Bay and have leached directly into Thunder Bay surface water from direct contact with CKD in areas under the pile that were once part of the bay. Surface water within Thunder Bay is the source water for Alpena's drinking water.