Davis Monthan Afb is a superfund site located at Ne 1/4 Sec34 Ts145 R14e, Tucson, AZ 85707. The Environmental Protection Agency (EPA) identifies sites such as Davis Monthan Afb 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. Davis Monthan Afb 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.