The Tower Chemical Company (TCC) Site (the Site) in Lake County, Florida is an approximately 15-acre abandoned pesticide manufacturing facility. From 1957 to 1981, TCC manufactured, produced and stored various pesticides. TCC discharged acidic wastewater into a 0.5-acre, unlined percolation/evaporation pond, which was located over a relict sinkhole. This configuration created a conduit to the surficial and Floridan ground-water aquifers. TCC also burned and buried its waste on a 1.5-acre portion of the Site. In 1980, the wastewater pond at the main facility overflowed into an on-site drainage ditch which flowed to the Gourd Neck of Lake Apopka, approximately 1.5 miles away, where vegetation and aquatic animals were affected. After two court orders, TCC stopped all discharges into the pond.