Marine Corps Air Station El Toro - Environmental Remediation

Environmental Remediation

Before the site could be developed for civilian use, the Department of the Navy (which oversees both the Navy and the Marine Corps) was required to perform environmental remediation to clean up contaminated soil on the site. The contamination was caused by volatile organic compounds (VOCs), primarily industrial solvents that had been used over the years for purposes such as degreasing, paint stripping, and the cleaning of aircraft.

Over the years, the VOCs had seeped into the groundwater, resulting in a plume of contaminated groundwater extending for three miles (5 km) to the west of the station. In July 2005, the Department of the Navy's Base Realignment and Closure (BRAC) Program Management Office (PMO) issued a public notice stating that the cleanup of the contaminated soil was complete. The cleanup of the groundwater is being handled by the Irvine Desalter Project, a project of two local water authorities that has financial backing from the Navy and the State of California.