Del Amo Operable Unit 1 (OU-1): The remedy to treat contaminated soil and light non-aqueous phase liquid (LNAPL) is being implemented at the site. This puts us at the "remedial action" phase of the Superfund process. In May 2023, a soil vapor extraction system was installed and placed into operation.
| City | Los Angeles |
|---|---|
| County | Los Angeles County |
| State | California |
| Coordinates | 33.84664, -118.28947 |
Del Amo is a federal Superfund site in California. The Superfund program, created by Congress in 1980, addresses sites where hazardous substances have been released or threaten release into the environment. EPA scores potential sites using the Hazard Ranking System; those that score high enough are placed on the National Priorities List.
Current status: Cleanup underway. Active cleanup is underway, meaning EPA has approved a remediation plan and work is in progress. Cleanup timelines vary widely — some sites take decades depending on contamination depth, groundwater involvement, and funding availability.
EPA has identified 10 contaminants of concern at this site, including 1,2,4-trimethylbenzene, 1,2-dichloroethene (cis and trans mixture), arsenic. Contamination has been detected in soil, groundwater, soil gas.
If you live near this site and have health concerns, your state health department can provide site-specific guidance. EPA maintains a community involvement program for most NPL sites, and site documents — including the Record of Decision, five-year reviews, and public health assessments — are typically available through EPA's Superfund site profile.