Located in California, Lawrence Livermore National Laboratory (LLNL) was established in 1952 as a multidisciplinary research and development center focusing on weapons development and stewardship and national security. The laboratory is operated by Lawrence Livermore National Security, LLC, for the NNSA. At the LLNL main site, EM has been tasked by Congress to demolish several excess facilities. At the Site 300 experimental test site, EM is responsible for the characterization, remedy selection, and remedy implementation at Buildings 865 and Building 812, as well as addressing the remaining perchlorate contamination in Building 850 groundwater.