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Condor Earth Technologies, Inc. <br /> 21663 Brian Lane Sonora CA 95370 (209)532-0361 <br /> 188 Frank West Circle Suite I Stockton CA 95206(209) 234-0518 <br /> September 8, 2004 Condor Protect No 1707 <br /> THIRD QUARTER GROUNDWATER MONITORING REPORT <br /> AND TREATMENT SYSTEM STATUS UPDATE <br /> Site Address Canepa's Car Wash <br /> 6230 Pacific Avenue <br /> Stockton, California <br /> Client Mr Remo Canepa <br /> 1536 N Hunter Street <br /> Stockton, California <br /> Primary Agency Jeff Wong, San Joaquin County Environmental Health Department (SJCEHD) <br /> Copy to James Barton, California Regional Water Quality Control Board, Central Valley <br /> Region (CRWQCB) <br /> This is a report of the results of the third quarter 2004 groundwater monitoring event conducted July 22 <br /> and 23, 2004 at the above-referenced site Figures indicating the site location, groundwater elevation <br /> contours, groundwater elevation fluctuations (hydrograph), benzene iso-concentration contours, MTBE <br /> iso-concentration contours, and historical MTBE concentrations in MW-3 are attached to this report <br /> (Attachment A, Figures 1, 2, 3, 4, 5, and 6, respectively) Site background information, historical <br /> groundwater monitoring data, field forms, and laboratory analytical results are provided in Attachments <br /> B, C, D, and E, respectively This report has been submitted to the SJCEHD and the CRWQCB as <br /> indicated above <br /> In a letter dated February 4, 2003, Mr Jeff Wong of the SJCEHD approved Condor's proposal to reduce <br /> quarterly sampling of MW-5, MW-6, MW-7, and MW-10 to an annual basis, and the destruction of MW-, <br /> 8 to accommodate site development It is anticipated that installation of a new monitor well in the vicinity <br /> of MW-8 and an additional down-gradient well will be conducted following development of the property <br /> Monitor wells MW-5, MW-6, MW-7, and MW-10 are currently monitored annually by Condor during <br /> third quarter monitoring event and were sampled during the July 2004 event A summary of the results of <br /> the 2004 annual groundwater monitoring event is provided in Table 1, on the following page <br /> 1 � <br /> �1 <br /> 4M <br /> IL CONDOR <br />