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Site History <br /> Canepa's Car Wash(Pacific Avenue) <br /> Page—4- <br /> In August 2001, Condor conducted a sensitive receptor survey within a 2,000-foot radius of the site to <br /> identify potential areas of groundwater recharge or discharge (surface water bodies), schools, and <br /> potential water well users that could be impacted by migration of groundwater from the site. The results <br /> of the sensitive receptor survey are included in the Quarterly Groundwater Monitoring (Third Quarter <br /> 2001) and Sensitive Receptor Survey Report, dated August 16, 2001. The results indicated the presence of <br /> several domestic and municipal wells, two schools, three child-care facilities, and three LUST sites within <br /> the study area. No apparent actively pumped drinking water wells were located within 500 feet of the site, <br /> however. <br /> Condor performed additional groundwater investigation activities at the site consisting of three CPT <br /> borings, hydropunch sampling, and the installation of three soil borings and four monitor wells. Details of <br /> the investigation are presented in the Additional Soil and Groundwater Investigation Report dated <br /> January 21, 2002. Twelve monitor wells, MW-1 through MW-12d, were surveyed as part of the <br /> investigation. The new survey identified errors in the previously reported elevations of monitor wells <br /> MW-6 and MW-7. The new survey elevations for these wells are higher than previously reported, and <br /> consequently, the groundwater elevation contours for the site no longer indicate a groundwater mound in <br /> the vicinity of well MW-2. The task of surveying the monitor wells was sufficient to complete the <br /> Groundwater Mounding Study Report dated February 13, 2002. <br /> Condor performed quarterly monitoring activities at the site on January 10, 2002. Laboratory analytical <br /> • results of the groundwater samples indicated concentrations of petroleum hydrocarbon constituents that <br /> were consistent with historical data. The analytical results also indicated substantial declines in <br /> contaminant concentration in monitor wells MW-11 and MW-12d as compared to the initial sampling <br /> results. <br /> • <br />