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GEOMATRIX TABLE 1 CALCULATION OF REPRESENTATIVE CONCENTRATIONS IN SOIL Pomhn Prnperty 1755 West l lth Street Tracy,Califorina Concentrations in milligrams perkilogmm(mg/kg) Bcnz(a) Ethyl Acensp- anthra- Fluoran- I Naptha- Phenan- Sample ID Date TPHg TP1ld Me Benzene Toluene benzene Xylenes MTBE thene cene Chrysene ihene Fluorene lone thrcne Pyrene EB7-9-9.5 7/29/99 NA -50 3400 -0.62 1.6 -0.62 0.7 NA 0.54 0.13 0.54 0.071 39 -0.005 5.1 0.27 EB9-14.5-15 7/29/99 NA -50 4300 -3.1 7.5 -3.1 3.4 NA 0.16 0.035 0.14 0.029 0.49 0.005 0.72 0.093 GMX-1-11.0 9/22/99 -1 23. 1 -50 -0.005 -0:005 -0.005 -0.005 -0.005 -0.005 -0.005 -0005 -0.005 -0.005 0.005 -0.005 -0.005 GMX-2-8.5 9/22/99 870 6800 18000 -0.005 -0.005 0.035 0.07 -0.005 0.76 -0.005 0.43 0.098 -0.005 -0.005 3.7 0.23 GMX-3-11.0 9/22/99 -1 36 70 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0:005 -0.005 -0.005 -0.005. 0.005 0.005 GMX-4-11.0 9/22/99 -1 22 -50 -0:005 -0.005 -0.005 -0:005 -0:005 -0:005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 GMX-6-11.5 9/22/99 180 4100 12000 -0:005 -0.005. -0.005 -0.005 -0.005 NA NA NA NA NA NA NA NA GMX-7-11.0 9123/99 150 4700 10000 -0:005 -0.005 -0.005 -0.005 -0.005 NA I NA NA NA NA NA NA NA GMX 8-12.0 9!23/99 -1 -10 450 -0:005 -0.005 .0:005 -0M5 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 GM.X-13-12.5 9/24/99 1000 400 880 -0.05 -0.05 1:3 0.55 -0.05 0.034 -0.005 -0.005 -0.005 0.095 3.3 0.053 -0.005 GMX-15-12.5 9/24/99 -1 -10 -50 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 7.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 GMX-17-11.5 9124/99 -1 -10 SO 0.005 0.005 -0.005 -0:005 -0.005 -0.005 0.005 -0.005 0.005 -0.005 -0.005 -0.005 -0.005 GMX-19-13.0 9!24199 -1 -10 50 -0.005 -0:005 -0.005 -0:005, O.00S0.005 O.00S -0.005 -0.005 -0.005 -0.005 70.005 -0.005 GMX-25-12.5 5/16/00 NA NA -50 -0.005 -01005 -0.005 -0-005 NA -0.005 00005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 GMX-26-8.0 5/16/00 NA NA 120 -0.005 -0.005 -0.005 -0.005 NA -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 0.005 GMX-27-8.0 5/16/00 NA NA -50 -0.005 -0.005 -0.005 -0.005 NA -0.005 -0.005 -0.005 O.00S -0.005 -0.005 -0.005 -0.005 GMX-30-8.0 10/12/00 NA NA -50 -0.405. -0:005 -0.005 -0:005 NA -0.005 -0.005 -0:005 -0:005 -0.005 -0.005 -0.005 1 -0.005 GMX-31-95 10/12/00 NA NA SO -0.005 -0.005 -0.005 -0.005 NA -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 GMX-32-9.0 10/12/00 NA NA 1700 -0.005 -0.005 -0.005 -0.005 NA -0.005 -0.005 0.079 -0.005 4005 -0.005 -0.005 0.057 GMX-33-8.0 10/13/00 NA NA -50 -0.005 -0.005 -0.005 -0.005 NA -0.005 1 -0:OQ5 -0.005 -0.005 -0.005 -0.005 -0.005 -0.005 Count(n) 11 13 1 20 20 20 20 20 11 18 18 18 18 18 18 18 18 Detections 4 7 9 0 2 2 4 0 4 2 4 3 3 1 4 q Non-detects 7 6 11 20 18 18 16 11 14 16 14: 15 i5 17 14 14 Minimum Detected Value 150 22 70 0 1.6 0.035 0.07 0 0.034 0.035 0.079 0.029 0.095 3.3 0.053 0.057 Maximum Detected Value 1000 6800 18000 0 7.5 1.3 3.4 0 0.76 0.13 0.54 0.098 3.9 3.3 5.1 0.27 Minimum Detection Limit 1 10 50 0.005 0.005 0.005 0.005 0.005 0.005 0.005 OROS 0.005 0.005 0.005 0.005 0.005 Maximum Detection Limit 1 50 50 3.1 0.05 3.1 0.005 0.05 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 Mean(x) 200.3 1242.4 2537.3 ND 0.458 0.162 0.238 ND 0.085 0.011 0.068 0.013 0.251 0.186 0.534 0.038 Standard Deviation(sd) 370.19 2331.63 4989.40 0.349 1.695 0.439 0.769 0.007 0.212 0.031 0.157 0.027 0.918 0.777 1.437 0.081 t value(t) 1.81 1.78 1 1.73 1.73 1.73 t.73 1.73 1.81 1.74 1.74 1.74 1.74 1.74 1.74 1.74 1.74 95%UCL' 402.6 2395 4466 ND 1.11 0.33 0.54 ND 0.17 0.024 0.13 0.024 1 0.63 0.50 1.12 0.07 95%UCL calculated as follows: x+sd x t/ NA=Not Analyzed; ND=Not Detected Negative value denotes that the sample was not detected above the laboratory detection limit. i.Aproiecl17000s17243.001tpomboldata calesxls