Uscgc Sumac Wlr 311 is a superfund site located at Foot Of Iron St, St Louis, MO 63111. The Environmental Protection Agency (EPA) identifies sites such as Uscgc Sumac Wlr 311 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. Uscgc Sumac Wlr 311 is currently registered as an Active superfund site by the EPA. However, it is not on the NPL (National Priorities List), which means the EPA does not consider it one of the nation's most hazardous waste sites.