Site Mitigation & Restoration Program

We protect and maintain California’s land and places
by setting strict standards for land restoration and cleanup

Santa Susana Field Laboratory (SSFL) Home

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.

For more information on the SSFL site, please select any of the boxes below. Got a question or comment? Share it using STREAM: the SSFL Tool for Response Engagement and Answer Management.

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

Watch the Santa Susana Field Lab Informational Video to learn about the site. To learn even more or leave a comment, visit our Soil Smarts page.

SSFL Tribal Affairs

DTSC’s Tribal Affairs Program is dedicated to communicating and coordinating with the federal-recognized and nonfederal-recognized California Native American tribes who are historically and culturally affiliated with the lands in and around the Santa Susana Field Laboratory (SSFL) site. DTSC is committed to meaningful engagement with California Native American tribes to strengthen the government-to-government relationships on all work DTSC is involved with. 

The Deputy Director for the Office of Environmental Equity is the primary contact for tribal concerns as they relate to activities on the project and meets with tribal representatives as a body collectively and individually in consultation and as requested. Our purpose is to listen, to learn, and to receive input, in order to incorporate tribal-focused perspectives/recommendations in the decision-making process overseen by DTSC at the Santa Susana Field lab.

Email Updates

Keep up to date with the latest news and information on the Santa Susana Field Laboratory cleanup.

California for All Logo Gavin Newsom
Office of the Governor


Visit his website

Yana Garcia Yana Garcia
Secretary for Environmental Protection


Visit her Profile

Katherine M. Butler, MPH, DirectorKatherine M. Butler, MPH
Director


Visit her Profile