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�a ff <br /> �i_ r�, <br /> CAMBRIA <br /> , . ;?- 04 <br /> November 17, 2000 <br /> Mr Jeffrey Wong <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report — Third Quarter 2000 <br /> Former Shell Service Station <br /> 880 Victor Road <br /> Lodi, California <br /> SAP Code 135446 <br /> Incident No 98995526 <br /> SJCPHS/EHD Site Code 1746 <br /> Dear Mr Wong <br /> Cambria Environmental Technology, Inc (Cambria) prepared this report on behalf of Equtva <br /> Services LLC (Equiva) in accordance with quarterly reporting guidelines issued by the Central <br /> Valley Regional Water Quality Control Board and San Joaquin County Public Health Services, <br /> Environmental Health Division (SJCPHS/EHD) <br /> THIRD QUARTER 2000 ACTIVITIES <br /> Blaine 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 (Appendix A) <br /> Cambria compiled the oxygenate and lead scavenger data (Table 1), prepared a site vicinity <br /> map (Figure 1), and prepared a groundwater elevation contour map (Figure 2) Blaine's <br /> report, presenting the laboratory report, is included as Appendix A <br /> ANTICIPATED FOURTH QUARTER 2000 ACTIVITES <br /> Blaine will gauge and sample all wells and tabulate the data Cambria will prepare a <br /> groundwater monitoring report <br /> Oakland CA CONCLUSIONS AND RECOMMENDATIONS <br /> San Ramon CA <br /> Sonoma, CA <br /> Petroleum hydrocarbon and methyl tertiary butyl ether (MTBE) concentrations in the wells <br /> Cambria this quarter are generally consistent with historical data No other fuel oxygenates were <br /> Environmental <br /> Technology,Inc detected Groundwater flow direction is westerly this quarter This is not consistent with <br /> previous flow directions, however, there is only 0 02 of an inch difference in elevation <br /> Perkins Street <br /> P 0 Box 259 among the three wells Because the groundwater gradient is very flat at this site, fluctuations <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />