The U.S. Department of the Interior (DOI), in cooperation with the California Department of Toxic Substances Control (DTSC), is beginning a Five-Year Review process under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) that will review the groundwater remedy implemented at the Topock Compressor Station in San Bernardino County, California.
The selected remedy for groundwater includes the use of in-situ treatment with fresh water flushing for groundwater contamination associated with Solid Waste Management Unit (SWMU) 1/Area of Concern (AOC) 1 and AOC 10.
The purpose of the Five-Year Review is to ensure that the implemented remedy functions as intended and is protective of human health and the environment. Five-Year Reviews will continue for the life of the site until hazardous substances, pollutants, or contaminants no longer remain on-site at levels that do not allow for unlimited use and unrestricted exposure.
The Public Notice for the First Five-Year Review of the Groundwater Remedy can be found here.
More information on the Five-Year Review process can be found on the Fact Sheet here.