Chemical Site Marysville Ex is a superfund site located at 3 Miles Nnw Of Marysville, Marysville, KS 66508. The Environmental Protection Agency (EPA) identifies sites such as Chemical Site Marysville Ex 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. Chemical Site Marysville Ex 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.