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I <br />' QUARFERLY MONITORING REPORT,July 1998 <br /> CANEPA S CAA WASH <br /> • 6230 Pacific Avenue Stockton CA <br /> August 24 1998 <br /> P1gL -5 <br /> The results of the laboratory analyses during the July, 1998, monitoring event indicate that gasoline <br /> oxygenates/additives, excluding MTBE, were not detected at or above the laboratory reported detection <br />' limits in any of the samples analyzed No TPH-G, gasoline oxygenates/additives, or BTEX were <br /> detected at or above the laboratory reported detection limits in the groundwater samples collected from <br /> MW-5, MW-7 or MW-8 Groundwater samples collected from MW-1, MW-2, MW-4, MW-6, and SV-4 <br />' <br /> contained TPH-G and/or one of more BTEX components above the laboratory detection limits In <br /> addition, MTBE was detected in the groundwater samples collected from MW-1, MW-3, and SV-4 <br /> 6 0 RECOMMENDATIONS <br /> Condor recommends that the additional investigation to further characterize the extent of contamination <br />' at the site, desci ibed in Report—Soil and Groundwater Inve vugation,dated June 12, 1998, be conducted <br /> Approval of the proposed scope of work was given by the PHS/EHD in a taxed approval document, <br /> dated July 28, 1998 Further characterization will include the installation of additional monitor wells and <br />' soil borings The existing monitor wells at the site have a screened interval well below the current water <br /> table and provide little information pertaining to the vadose zone/groundwater interface <br />' The next quarterly monitoring event is scheduled for October, 1998 If you need additional information <br /> or have any questions, please contact us at(209)234-4518 <br /> IS Respectfully submitted, <br /> CONDOR EARTH TECHNOLOGIES,INC _ <br /> ® GFO�OC <br /> DONALD f I MMSE <br /> IR David Meade NO 6430 11 F Kresse <br /> Project Geologist J) I rma Registered <br /> ogist 96430 <br /> �0 <br /> I <br /> I <br /> P 11707 Cinepa Pactfic%Qaarteri}Monrtorm611989 APnA2QMR98 doc <br /> It� CONDOR <br />