Mound Plant Usdoe is a superfund site located at Mound Rd, Miamisburg, OH 45342. The Environmental Protection Agency (EPA) identifies sites such as Mound Plant Usdoe 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. Mound Plant Usdoe is currently registered as an Active NPL superfund site by the EPA. Because it is on the NPL (National Priorities List), Mound Plant Usdoe is considered one of the worst hazardous waste sites identified by the EPA.