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<br /> Condor Earth Technologies, Inc.
<br /> Cl'� �-I �� ��• 5� 21663 Brian Lane Sonora CA 95370(249) 532-0361
<br /> 03 188 Frank West Circle Suite I Stockton CA 95206(209) 234-0518
<br /> September 9, 2003 Condor Project No 1707
<br /> THIRD QUARTER(2003 ANNUAL EVENT) GROUNDWATER MONITORING REPORT
<br /> AND SOIL VAPOR EXTRACTION 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 2003 groundwater monitoring event conducted on July
<br /> 25, August 1 and August 4, 2003 at the above-referenced site Figures indicating the site location,
<br /> groundwater elevation contours, groundwater elevation fluctuations (hydrograph), benzene iso-
<br /> concentration contours, MTBE iso-concentration contours and histoncal MTBE concentrations in MW-3
<br /> (Attachment A, Figures 1, 2, 3, 4, 5, and 6, respectively) are attached to this report Site background
<br /> information, historical groundwater monitoring data, field forms, and laboratory analytical results are
<br /> provided in Attachment B, C, D, and E, respectively This report has been submitted to the SJCEHD and
<br /> the CRWQCB as indicated above
<br /> In a letter to Mr Jeff Wong of the SJCEHD dated October 2, 2002, Condor proposed annual monitoring
<br /> of site monitor wells MW-5, MW-6, and MW-7 (reduced from quarterly) and destruction of MW-8 and
<br /> MW-10 In a letter dated February 4, 2003, Mr Wong indicated that annual sampling of MW-5, MW-6,
<br /> and MW-7 and destruction of MW-8 were approved but that annual monitoring of MW-10 was necessary
<br /> Mr Wong also indicated that MW-8 would need to be replaced and an additional down-gradient monitor
<br /> well installed Condor subsequently prepared a work plan for the destruction of MW-8 dated February 5,
<br /> 2003, destroyed MW-8 under SJCEHD permit and supervision on April 11, 2003 and prepared a report of
<br /> the well destruction dated April 21, 2003 Installation of a monitor well in the vicinity of former monitor
<br /> well MW-8 and a down-gradient monitor well will be conducted following development of the property
<br /> that the former MW-8 was located on
<br /> In accordance with SJCEHD requirements as described above, Condor did not sample MW-5, MW-6,
<br /> MW-7, MW-8 (destroyed) and MW-10 as part of the second quarter 2003 groundwater monitoring event
<br /> conducted on April 17 and 18, 2003 Monitor wells MW-5, MW-6, MW-7 and MW-10 were Sampled,
<br /> however, as part of the annual monitoring event conducted on July 25, August 1 and August 4, 2003 _
<br /> (current event) A summary of the results of the third quarter 2003 groundwater monitoring (2003 annual
<br /> • event) is provided in Table 1 on the following page
<br /> �'� CONDOR
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