Velsicol Burn Pit is a superfund site located at 1270 W Monroe Road, St. Louis, MI 48880. The Environmental Protection Agency (EPA) identifies sites such as Velsicol Burn Pit 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. Velsicol Burn Pit is currently registered as an Active NPL superfund site by the EPA. Because it is on the NPL (National Priorities List), Velsicol Burn Pit is considered one of the worst hazardous waste sites identified by the EPA.