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Final Release LLNL Site 300 (USDOE) 4. ATSDR determined that the environmental contamination related to Site 300 presents No Public Health Hazard based on the fact that exposure to contaminants from Site 300 is not occurring novv, has not occurred in the past, and is not expected to occur in the future. "No Public Health Hazard" means that people are not, have not, and are not expected to be exposed to hazardous substances associated with Site 300. Recommendations 1. Continue the prescribed remedies identified in the Final Record of Decision for the General Services Area Operable Unit (LLNL 1997) and the Interim Site-Wide Record of Decision for Site 300 (LLNL 2001). 2. Continued monitoring of water supply wells (CDF-1 and CON-1) that are located downgradient from the TCE contaminated groundwater plume emanating from the central GSA. Public Health Action Plan The Public Health Action Plan for the Lawrence Livermore National Laboratory Site 300 describes the public health actions taken and planned to be taken by ATSDR, DOE, or other agencies at and near the site. The purpose of the Public Health Action Plan is to ensure that this public health assessment not only identifies public health hazards,but also provides a plan of action designed to mitigate and prevent adverse human health effects resulting from exposure to hazardous substances in the environment. The public health actions that are completed, being implemented, or planned are as follows. Public Health Actions Taken • DOE currently monitors air, ground and surface water, soil, and biota, as required by regulatory compliance with permitted air and water discharges, and plans on continuing such monitoring for site-specific chemical and radioactive contaminants. • In consultation with regulatory agencies and the community, remediation strategies have been developed and implemented for all environmental releases at Site 300. Public Health Actions Planned • If additional information concerning potential exposures or off-site contaminant concentrations becomes available that potentially changes our public health findings, ATSDR will reevaluate the potential for adverse health effects from LLNL Site 300- specific sources or releases. 20