The Wauconda Sand and Gravel Landfill site is located in Lake County, Illinois, approximately two miles north of the Village of Wauconda. The 74-acre site is comprised of a 43-acre unpermitted landfill, a nine-acre permitted landfill, nine acres which are excavated but unfilled, and 13 acres of perimeter site area. Before 1950, the site property was used as a sand and gravel pit. From 1950 until 1977, Wauconda Sand and Gravel Company operated the northern portion (43 acres unpermitted fill) of the site as a landfill. Landfill operations during this period consisted of dumping refuse into the mined-out gravel pit. The refuse deposited at the landfill consisted of residential garbage, construction debris, some industrial sludges and drums with undetermined contents. In 1980, a private well adjacent to the eastern boundary of the landfill was sampled by Illinois Environmental Protection Agency and inorganic, organic and PCB contamination was detected. Additional investigations concluded that PCBs, metals, and organics were contaminating the ground water and surface water (Mutton Creek).

"September 30, 1985." "PB86-133873." "Office of Emergency and Remedial Response."