Leonard Chemical Co Inc is a superfund site located at Coureton Ferry Rd, Rock Hill, SC 29704. The Environmental Protection Agency (EPA) identifies sites such as Leonard Chemical Co Inc because they pose or had once posed a potential risk to human health and/or the environment due to contamination by one or more hazardous wastes. Leonard Chemical Co Inc is currently registered as an Active NPL superfund site by the EPA. Because it is on the NPL (National Priorities List), Leonard Chemical Co Inc is considered one of the worst hazardous waste sites identified by the EPA.