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Final Release LLNL Site 300 (USDOE) <br /> Comment: <br /> The City of Tracy's groundwater wells are below Site 300 and the City has increased its <br /> groundwater pumping from 6000 AFY to 9000 AFY in the last year which may have an effect <br /> upon future plume migration. <br /> This PHA fails to analyze the increased probability of exposure to contaminated groundwater due <br /> to the Tracy Hills Development. <br /> Response: <br /> The City of Tracy pumps drinking water from aquifers in the San Joaquin Valley. These aquifers <br /> are not hydrologically connected to any aquifer that underlies Site 300. Groundwater <br /> contamination at Site 300 only extends off-site at the Central GSA. This contamination extends <br /> approximately 200ft off-site and is being aggressively remediated to below drinking water <br /> standards. However, groundwater modeling suggests that neither this plume nor any other <br /> contaminated groundwater plume associated with Site 300 will come in contact with the <br /> groundwater used in the City of Tracy. Furthermore, the proposed Tracy Hills Residential area <br /> will also be connected with the City of Tracy's public water system and will, consequently, be <br /> unaffected by groundwater emanating from Site 300. <br /> Comment: <br /> The PHA does not consider radiological and non-radiological exposure to the community from <br /> controlled burns. <br /> The PHA does not consider PM-10 and PM-2.5 particles that may result from current and <br /> planned construction activities. <br /> LLNL air monitoring program is inadequate. <br /> Controlled burns will be a nuisance to Tracy Hills residents and could contain radiological <br /> elements from uncharacterized areas of Site 300. <br /> Response: <br /> See the Response to the Comments under the Airborne Contamination and LLNL Conducted <br /> Controlled Burns section of Appendix A. <br /> B-4 <br />