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C A M B R I A <br /> December 15, 2000 <br /> Ms Lori Duncan <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor cn:) _ <br /> Stockton, California 95202 <br /> r-� <br /> Re Groundwater Monitoring Report — Third Quarter 2000 <br /> Former Texaco Service Station <br /> 440 West Charter Way <br /> Stockton, California �. <br /> SAP Code 121258 <br /> Incident No 88870583 t.,:) <br /> SJCPHS/EHD Site Code 1055 <br /> Dear Ms Duncan <br /> Cambria Environmental Technology, Inc (Cambria) prepared this report on behalf of Equiva <br /> Services LLC in accordance with quarterly reporting requirements issued by the Central Valley <br /> Regional Water Quality Control Board and San Joaquin County Public Health Services, <br /> Environmental Health Division <br /> THIRD QUARTER 2000 ACTIVITIES <br /> Blame Tech Services, Inc (Blaine) of San Jose, California gauged and sampled all site wells <br /> and prepared a summary table of field gauging data and gasoline constituents Cambria <br /> compiled the additional constituents and oxygenates (Table 1), prepared a site vicinity map <br /> (Figure 1), and prepared a groundwater contour/chemical concentration map (Figure 2) <br /> Blaine's report, presenting the laboratory report, is included as Appendix A <br /> FOURTH QUARTER 2000 ACTIVITIES <br /> Blaine will gauge and sample the site wells according to the existing sampling schedule and will <br /> tabulate the data Cambria will prepare a groundwater monitoring report <br /> Oakland CA <br /> San Ramon CA Cambria implemented our approved site investigation work plan in early November 2000 <br /> Sonoma, CA We will issue a report during the fourth quarter documenting the site investigation activities <br /> Cambria <br /> environmental On November 27, 2000 we attempted to clear out the blockage in well MW-16 with a <br /> Technology,Inc specially outfitted vacuum truck designed to remove solids Blaine had previously tried to <br /> 10'rkms Sheet remove the blockage from this well and was able to remove only a small amount of gravel <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />