Moss Landing Harbor Island is a superfund site located at Sandholt Rd Opposite 7532 Sandholt, Moss Landing, CA 95039. The Environmental Protection Agency (EPA) identifies sites such as Moss Landing Harbor Island 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. Moss Landing Harbor Island 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.