Now online is the executive summary of the historical 1988 Upper Great Lakes Connecting Channels Study (UGLCCS). Initiated in late 1983 by the United States Environmental Protection Agency, the UGLCC Study was conceived to integrate scientific information and data on the Upper Connecting Channels and to develop recommendations for binational efforts to restore the Detroit, St. Mary, and St. Clair Rivers. UGLCCS was a unique cooperative under- taking to advance overall understanding of environmental conditions and identify and assess the major pollution sources. The UGLCC Study pioneered the use of the mass balance concept (pollutant input/output) for planning and design of a large scale environmental study of toxic substances.
The UGLCCS executive summary can be found at http://www.epa.gov/glnpo/uglcc/vol1.html