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Report Soil and Groundwater Invcstigatton <br /> Cancpd s Car Wash <br /> 6320 Pacific St Stockton CA <br />' lune 12 1998 <br /> Page-10- <br /> Condor further recommends that additional investigation be conducted to further characterize the extent <br /> r of contamination at the site to include the installation of additional monitor wells Field observations <br /> indicate the potential for fresh gasoline to be present Additional monitor wells, with an appropriate <br /> screened interval, are required to confirm that fresh gasoline 1s not accumulating at the water table The <br /> wells should be screened from 55 to 35 feet bgs The wells should be placed as shown on Figure 4 <br /> Additional monitor wells may be required to better determine any preferential pathways that may be <br /> present in the groundwater <br /> rConcurrent with the installation of the monitor wells three soil borings also should be installed The <br /> borings will also aid in investigating the distribution of hydrocarbons in the vadose zone The borings <br /> r will also be used to establish initial concentrations levels that would allow target clean-up levels to be <br /> determined The borings should be installed to a depth of 40 feet bgs In the proposed locations shown on <br /> Figure 4 A work plan should be prepared upon approval of this proposed scope of work <br /> r <br /> If you have any questions or need any additional infonnatlon, please call us at(209) 234-0518 <br /> r <br /> Respectfully submitted, <br /> Condor Earth Technologies, Inc <br /> r! <br />' R David Meade Donald T Bishop <br /> Project Manager Califomia Registered <br /> Geologist#4852 <br /> rS� D ��0 <br /> C` <br /> DO WA g BLS0i# <br /> r <br /> O <br /> r <br /> r <br /> P 11707 Canepa-PacificlSoil Bort116 lnvc.sugatton\Soil Invser Report doe <br /> �It► CONDOR <br />