U.S. Army Corps of Engineers Duluth Harbor and St. Louis River AOCs

GLEC was retained on behalf of the USACE-Detroit District to conduct vibracore sediment sampling at the St. Louis River, Great Lakes Legacy Act (GLLA) Duluth Harbor Area of Concern. Over 1,200 feet of four-inch diameter vibracore sediment cores were collected; 584 cores were collected from 268 locations.  This work was conducted both on the ice (during March 2010) and on GLEC’s 26-foot work boat during October and November 2010, and May through June 2011.