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Table 1 <br /> Soil Analytical Results <br /> Frontier Transportation <br /> 425 W.Larch Road,Tracy,CA <br /> Soil Boring Depth TPHg TPHtl Benzene Toluene bemene Ethyl Xylenes MTBE <br /> ID Dale (D-bgs) (mg(kg) (mg/kg) (mg/kg) (mg/kg) mg/kg) (mg/kg) )mg/kg) <br /> MW19 08/01/05 5 0.6 NA ND ND ND ND ND <br /> 08/01/05 10 217 NA ND ND 4.66 2.27 0.307 <br /> 08/01/05 15 ND NA ND ND ND ND ND <br /> 08/01/05 20 ND NA ND ND ND ND ND <br /> MW20 08/01/05 5 ND NA ND ND ND ND ND <br /> 08/01/05 10 ND NA ND ND ND ND -9..227--G O.00 <br /> 08/01/05 15 ND NA ND ND ND ND *EY-C 7,217 <br /> 08/01/05 20 ND NA ND ND ND ND ND <br /> MW21 08/02/05 5 ND NA ND ND ND ND ND <br /> 08/02/05 10 211 NA 1.08 ND 3.75 7X7,Q ND <br /> 08/02/05 15 0.7 NA ND ND ND ND 0.733 <br /> 08/02/05 20 ND NA 0.004 0.004 0.01 0.04 0.009 <br /> MW22 0926/06 5 ND NA ND ND ND ND ND <br /> 0926/06 10 1260 NA 8.86 1.31 12.6 78.9 33.7 <br /> 09/26/06 15 ND NA ND ND ND ND 0.009 <br /> 0926/06 20 ND NA ND ND ND 0.006 0.009 <br /> MW23 09/27/06 5 ND NA ND ND ND ND ND <br /> 0927/06 10 759 NA 1.55 0.195 16.4 1.22 2.01 <br /> 09/27/06 15 ND NA 0.003 ND 0.009 0.006 0.069 <br /> 0927/06 20 1.9 NA 0.013 ND 0.057 0.039 0.014 <br /> MW24 0227/07 5 ND NA ND ND ND ND ND <br /> 0227/07 10 ND NA ND ND ND ND ND <br /> 0227/07 15 ND NA ND ND ND ND 0.063 <br /> 0227/07 20 ND NA ND ND ND ND 4804— D fj t <br /> MW25 0227/07 5 ND NA ND ND ND ND ND <br /> 0227/07 10 ND NA ND ND ND ND ND <br /> 02/27/07 15 ND NA ND ND ND ND ND <br /> 0227/07 20 ND NA ND ND ND ND ND <br /> MW26 0228/07 5 ND NA ND ND ND ND ND <br /> 02/28/07 10 41 NA ND ND ND ND ND <br /> 0228/07 15 ND NA ND ND ND ND ND <br /> 0228/07 20 ND NA ND ND ND ND ND <br /> MW27 12/09/08 5 ND NA ND ND ND ND ND <br /> 12/09/08 10 ND NA ND ND ND ND 0.024 <br /> 12/09/08 15 ND NA ND ND ND ND 0.053 <br /> Notes: <br /> ft-bgs=feet below ground surface <br /> ND=Not detected above laboratory detection limits <br /> NA=Not analyzed <br /> TPH as gasoline and diesel(TPHg and TPHd)analyzed per EPA Method 8015 Modified <br /> BTEX,MTBE,and other oxygenates analyzed per EPA Method 82608 <br /> •=Soil borings SI and S2 are reported as hand auger soil borings to 3 ft-bgs. <br /> The samples were collected near the former dispenser and product piping. <br /> Frontier Transportation <br /> Site Conceptual Model <br /> AbAsaociatezlna 4 of 4 March I5,2010 <br />