Koppers Co Roanoke Vly Plt is a superfund site located at Rte 460 4 Mi W Of Salem, Salem, VA 24153. The Environmental Protection Agency (EPA) identifies sites such as Koppers Co Roanoke Vly Plt 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. Koppers Co Roanoke Vly Plt 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.