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Final Release LLNL Site 300 (USDOE) <br /> Appendix A: Community Concerns <br /> Groundwater Flow Direction: <br /> Comments: <br /> A citizen was concerned that contaminants from Site 300 could migrate off-site and eventually <br /> impact his drinking water wells. These wells are on his ranch, which lies about a mile west of <br /> Site 300 along Tesla Road. He wonders how LLNL can be sure that contamination is not <br /> migrating in his direction(west) if they do not sample wells in this area. <br /> Another citizen was similarly concerned about whether Site 300 contaminants could reach his <br /> private wells located approximately 6 miles northwest of the site. He is concerned that perhaps <br /> Site 300 contaminants could have resulted in his wife's breast cancer and the cancer-related <br /> deaths of two family pets. This citizen hired a witcher/dowser, who told him that his groundwater <br /> emanated from Site 300. <br /> Response: <br /> Please refer to the Site Hydrogeology section of this document, which addresses groundwater <br /> flow direction. Groundwater flow has been well documented in the Site Wide Remedial <br /> Investigation(LLNL 1994) referenced in this public health assessment. In general, groundwater <br /> flow direction dictates where monitoring wells are situated. If your personal wells are not being <br /> routinely monitored by LLNL, it is likely because groundwater does not migrate in that direction <br /> and your wells are in no danger of contamination from Site 300. <br /> Exposure to Radionuclides: <br /> Comments: <br /> Concern was raised about radionuclide contamination,particularly tritium and uranium-238, at <br /> Site 300. This was a general question about whether residents should be concerned about <br /> potential exposure to these radionuclides: <br /> "The toxic and radioactive elements in the soil and groundwater at Site <br /> 300 are a health risk to those of us who live in Livermore and Tracy and <br /> extremely hazardous to the people who work at Site 300. I am very <br /> concerned about contamination to my water supply in Livermore." <br /> "We know radiation has been connected to thyroid problems. My wife, <br /> who is a nurse,has never seen data to confirm our rumored impression that <br /> there is an unusually high experience of thyroid problems in the East Bay. <br /> Please make available the data on thyroid problems for employees and the <br /> Bay area." <br /> "[I am] concerned about current and long-term pollution from chemical <br /> and radioactive materials, and threats to human life from such pollution. [I <br /> A-1 <br />