Pg And E Gas Plant Colusa is a superfund site located at S Side Main Bet 1st & 2nd, Colusa, CA 95932. The Environmental Protection Agency (EPA) identifies sites such as Pg And E Gas Plant Colusa 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. Pg And E Gas Plant Colusa 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.