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i <br /> Quarterly Morutonng Report,October, 1999 <br /> Canepa's Car Wash(Park Street) <br /> November 15, 1999 <br /> Page 5 <br /> The fourth quarter, 1999, laboratory analytical results indicate that the area of groundwater contamination most <br /> impacted by petroleum hydrocarbons is in the northern portion of the site in the vicinity of monitor wells MW- <br /> 2 and MW-5 <br /> 6. RECOMMENDATIONS <br /> Condor recommends that additional investigation be conducted to further characterize the extent of <br /> contamination at the site, including the installation and sampling of additional monitor wells The existing <br /> monitor wells at the site are screened well below the current groundwater table and do not provide sufficient <br /> information pertaining to the vadose zone/groundwater interface These wells should be replaced with well <br /> screens that intercept the groundwater table A work plan describing the recommended installation of four <br /> additional monitor wells (MW-8 through MW-11) was prepared and submitted to the PHS/EHD in November <br /> 1998 The work plan is currently pending approval by the PHS/EHD Please call us at (209) 234-0518 with <br /> any questions <br /> Respectfully submitted, <br /> CONDOR EARTH TECHNOLOGIE <br /> DF. <br /> GEO�G' <br /> e � I�' <br /> Rb. U30 <br /> Donald F Kresse Todd C Hafner <br /> California <br /> 4 Registered 0���� Senior Geologist <br /> Geologist#6 3 Of CAti�F <br /> I <br /> P 12038 Caneps ParMlQuaterky Moratonng Reports11999 October\PARKQMR1099 doe <br /> t� CONDOR <br />