The 54-acre Bayou Bonfouca site is located in Slidell, Louisiana. A creosote plant began operating on site in 1882. During operations, numerous releases of creosote took place from spills, runoff and discharges. In the early 1970s, a fire at the plant ruptured several large storage tanks, causing creosote to flow onto the site and into the bayou. Operations ended in 1972, followed by disassembly of the plant. Operations contaminated soil, sediment and groundwater. Contamination resulted in sterilization of Bayou Bonfuca. Following cleanup, operation and maintenance activities and groundwater treatment and monitoring are ongoing.