Culley Oil Production Sia is a superfund site located at Rr #4 Off Hwy 62, Mount Vernon, IN 47620. The Environmental Protection Agency (EPA) identifies sites such as Culley Oil Production Sia 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. Culley Oil Production Sia 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.