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).

SSFL is a roughly 2,850-acre site in Simi Valley where rocket engine testing and nuclear research took place. DTSC is the lead regulatory agency overseeing the cleanup along with multiple state, federal and local government agencies.

The SSFL web pages have been redesigned to provide easier access to information about our work. You can find helpful materials like fact sheets, videos, and the Final Program Environmental Impact Report.

For more information on the SSFL site, please select any of the boxes below. If you would like to receive notifications about upcoming public engagement activities, please visit the My E-Lists Account page and subscribe.

Public Involvement documents, such as Fact Sheets, Public Notices, and Presentation Materials can be found on the Community Updates and Public Involvement Documents page.