Ngpca Harper 109 is a superfund site located at 1/4 Mi S On Keokuk Cnty Rd V-67, Harper, IA 52231. The Environmental Protection Agency (EPA) identifies sites such as Ngpca Harper 109 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. Ngpca Harper 109 is currently registered as an Archived superfund site by the EPA and does not require any clean up action or further investigation at this time.