Welcome to the California Environmental Protection Agency, Department of Toxic Substances Control (DTSC) website for the investigation and cleanup of environmental contamination at the Santa Susana Field Laboratory (SSFL).

DTSC's mission is to provide the highest level of public safety, and to protect public health and the environment from toxic harm.

DTSC is the lead regulatory agency overseeing the investigation and cleanup of contaminated soil and groundwater at the SSFL. Multiple state, federal and local government agencies also play a role in the cleanup under way at the SSFL site. Their activities are also described on this site.

Investigation and cleanup activities at the SSFL include soils investigations and cleanup, groundwater cleanup and monitoring, hazardous materials and waste handling, air quality testing and radiation cleanup program.

This website is designed to provide public access to information regarding the various investigation and cleanup activities that are under way at the SSFL site. We hope that this dedicated site serves as your initial SSFL communications vehicle and provides the information you’re looking for. DTSC welcomes your suggestions to enhance this website.

About the Santa Susana Field Laboratory

The Santa Susana Field Laboratory (SSFL) is located 30 miles northwest of downtown Los Angeles in southeastern Ventura County, near the crest of the Simi Hills at the western border of the San Fernando Valley. A former rocket engine test and nuclear research facility, the 2,849-acre field laboratory is currently the focus of a comprehensive environmental investigation and cleanup program, conducted by Boeing, the United States Department of Energy (DOE) and the National Aeronautics and Space Administration (NASA), and overseen by the Department of Toxic Substances Control.


Access the Santa Susana Field Laboratory Draft Program Environmental Report Submit Your Comments on the Draft Program Environmental Impact Report