Laserfiche WebLink
#b - N <br /> PUBLIC EALTH SER CES <br /> SAN JOAQUIN COUNTY <br /> r.� <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201]0388 <;'gbloc <br /> 209/468-3420 (�(� <br /> / s <br /> :r <br /> THOMAS J NOKES MAILED NIAR 0 81995 <br /> 1650 PARK ST <br /> ALAMEDA CA 94501 <br /> RE: DISCOVERY CHEVROLET SITE CODE: 2595 <br /> 1615 WEST 11TH STREET <br /> TRACY CA 95376 <br />! PHS/EHD has reviewed the January 10, 1996 Fourth Quarter 1995 Monitoring Report <br /> prepared by GeoStrategies Inc., and the letter of January 16, 1996 prepared by . <br /> Horizon Environmental Inc. regarding the above referenced site. <br /> In summary, the letter states the interim remediation formerly scheduled for the <br /> weekend of December 30, 1995 was cancelled due to a winter storm and will be <br /> { rescheduled after the winter months. The letter also states that this site qualifies as <br /> a low risk site and no further active remediation may be necessary based upon the <br /> December 8, 1995 Walt Petit response to the Lawrence Livermore National Lab <br /> (LLNL) report on Leaking Underground Tank Cleanup. <br /> The Walt Petit response to the LLNL report states that a site may be considered low <br /> risk once the fuel leak source has been removed and the fuel leak plume is stable. <br /> The PHS/EHD letter of October 18, 1995 stated that the lateral and vertical extent of <br /> soil and groundwater contamination has not been defined and that characterization of <br /> 1 the contamination is required to evaluate the most cost effective method of cleanup. <br /> You have not performed the additional investigation necessary to determine the <br /> stability of this plume, and the product available in the soil for groundwater <br /> degradation, considered a source, has not been removed or remediated. <br /> During the investigation phase a feasibility study should be conducted to gather site <br /> specific data necessary to determine the performance of various cleanup <br /> technologies on the contamination present at this site. Field trials of several <br /> appropriate technologies should be conducted so that real time data from this site is <br /> available for analysis. During the investigation phase interim remediation such as the <br /> overexcavation proposed in the November 15, 1995 workplan may be implemented. <br /> Once the contamination is characterized and a feasibility study is completed, you may <br /> submit the Corrective Action Plan (CAP). The CAP will contain data from the <br /> feasibility study, provide an assessment of the extent of the contaminant plume, <br /> determine realistic cleanup objectives, provide a cost analysis for each cleanup <br /> technology evaluated, and recommend the most cost effective technology for <br /> implementation. <br /> A Division of San Joaquin County Health Care Services <br />