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1 <br /> 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 /> December 2, 2004 Condor Project No 1707 <br /> FOURTH QUARTER GROUNDWATER MONITORING REPORT <br /> AND TREATMENT SYSTEM STATUS UPDATE <br /> U �„\l r` OO� <br /> Site Address Canepa s Car Wash 1, <br /> 6230 Pacific Avenue <br /> Stockton, California <br /> Client Mr Remo Canepa (Client) <br /> 1536 N Hunter Street Q <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 fourth quarter 2004 groundwater monitoring event conducted October <br /> 14, 2004 at the above-referenced site Figures indicating the site location, groundwater elevation contours, <br /> groundwater elevation fluctuations (hydrograph), benzene iso-concentration contours, methyl tertiary <br /> butyl ether (MTBE) iso-concentration contours, and histone MTBE concentrations in MW-3 are attached <br /> to this report (Attachment A, Figures 1 through 6, respectively) Site background information, historic <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 Annual groundwater monitoring of wells MW-5, MW-6, MW-7, and <br /> MW-10 is currently conducted during the third quarter It is anticipated that a new monitoring well in the <br /> vicinity of MW-8 and an additional down-gradient well will be installed following development of the <br /> property A summary of the results of the October 2004 groundwater monitoring event is provided in <br /> Table 1, on the following page <br /> • <br /> s <br /> 4V*M7 CONDOR <br />