Sierra Pacific Industries is a superfund site located at Mill Street & Hwy 3, Hayfork, CA 96041. The Environmental Protection Agency (EPA) identifies sites such as Sierra Pacific Industries 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. Sierra Pacific Industries 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.