The Kennecott (North Zone) site is located in Magna in Salt Lake County, Utah. Since 1906, the site processed copper, lead, zinc, molybdenum, arsenic, gold and silver-bearing ores. The resulting wastes contain hazardous substances, including heavy metals. Soils and sludge are contaminated, as are surface and groundwater, which affect wetlands between the site and the shore of Great Salt Lake. Cleanup is ongoing.