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Table 1 <br /> Conservative Calculation of Contaminants Remaining <br />' The Learner Company,Stockton California <br /> volume R eight of Volume Volume Total Weight <br /> Depth Soil Soil Water Water of %Inside <br /> Interval of Concentration(' Depth Length Width Area Impacted Impacted Impacted Impacted Contaminant Contamination Former <br /> Cone ni &3) (to", (ft)", (ft)42) (m)(i) (ft3) (kg) (ft3) (L) (lbs) At TLC(lbs) Excavation <br /> MTBE 0 012 97% <br /> Solt (ug/kg) <br />' 5' 104 5 18 53 954 4770 240 404 NA NA 00055 <br /> 10' 205 5 18 20 360 1800 90,719 NA NA 00041 <br /> Water (ug/L) <br /> Al at GW 203 5 18 53 954 4770 NA 1431 40527 00018 <br />' Az at GW 4 1 5 53 38 2014 5300 NA 1590 45030 000041 <br /> TPH(g) 061 94% <br /> Soil (mg/kg) <br />' S' NA-Not Detected <br /> Ai 10' 3 5 5 18 15 270 1350 68,039 NA NA 053 <br /> Water (mg/L) <br /> Ai at GW 051 5 18 53 954 4770 240,404 1431 40527 0 046 <br />' A, at GW 087 5 30 15 450 2250 113,398 675 19116 0 037 <br /> TPH(d) 474 89% <br /> Soil (mg/kg) <br /> Al 5' 272 5 18 53 954 4770 240,404 NA NA 144 <br /> ' Az 5' 527 5 2646 13230 666,782 NA NA 77 <br /> A, 10' 763 5 18 53 954 4770 240,404 NA NA 404 <br /> A2 10' 12 5 40 22 880 4400 221,757 NA NA 1-54 <br /> A3 10' 2 1 5 1704 8520 429401 NA NA 20 <br /> Water (mg/L) <br /> A, at GW 355 5 18 53 954 4770 NA 1431 40527 3 17 <br /> A2 at GW 330 5 18 24 432 2160 NA 648 18352 13 35 <br /> A3 at GW 110 5 15 25 375 1875 NA 5625 15930 3 86 <br /> A4 at GW 0 234 5 4089 20445 NA 61335 173704 009 <br /> Benzene 0 00041 100% <br /> ' Water at GW (ug/L) <br /> 4 6 5 18 53 954 4770 NA 1431 40527 000041 <br /> Ethylbenzene 5 4E-05 l00% <br /> ' Water at GW (ug/L) <br /> 061 5 18 53 954 4770 NA 1431 40527 0000054 Toluene 8 3E-05 100% <br /> Water at GW (ug/L) <br /> ' <br /> 093 5 18 53 954 4770 NA 1431 40527 0000083 <br /> Xylenes 000011 100% <br /> Water at GW OWL) <br /> 1 27 5 Is 53 954 4770 NA 1431 40527 000011 <br /> ' Assume Soil Porosity= 30% <br /> Soil Density= 1 5 T/cuyd III lbs/cuff 50 kg/cuft <br /> Notes til The depth interval of the respective concentration is based on the analytical results presented in the Limited Soil and Groundwater Sampling <br /> ' <br /> Report,(Kletnfelder,Inc January 12,2001) <br /> of Contaminant concentrations were averaged within each area isopleth See Attached Figures-Modified Plate 2 from the Limited Soil and <br /> Groundwater Sampling Report <br /> ' (3)Concentrations based on samples collected during October 2000 under the oversight of the San Joaquin County Public Health Services, <br /> Environmental Health Division Representative <br />