Runyon Robert Sia is a superfund site located at Sw1/4 Of Sec26 T5n R9e, Denver Twp, IL 62868. The Environmental Protection Agency (EPA) identifies sites such as Runyon Robert 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. Runyon Robert 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.