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' TABLE 4 <br /> SUMMARY OF COPCs IN SOIL <br /> SURLAND HOMES-BRIDLE CREEK <br /> Tracy, California <br /> Exposure <br /> ' Maximum Point <br /> Number of Soil Number of Detected Conc'n <br /> Constituent in Soil Samples Detects Conc'n Cs(m ) Statistical Methodl <br /> ' BTEX <br /> Toluene 23 2 0,040 0.028 99%KM(Cheb shev)UCL <br /> Eth (benzene 23 3 1.5 1.5 95%KM(Percentile Bootstrap)UCL <br /> Total Xylenes 23 6 3.9 1.5 95%KM(Percentile Bootstrap)UCL <br /> ' PAHs <br /> Acenaphthene 23 11 0.63 0.17 95%KM(t)UCL <br /> Anthracene 23 t0 0.26 0.090 95%KM(Percentile Bootstrap)UCL <br /> ' Benzo(a)anthracene 23 8 0.19 0.032 95%KM(t)UCL <br /> Benzo(a)pyrene 23 6 0.011 0.0046 95%KM(Percentile Bootstrap)UCL <br /> Benzo b fluoranthene 23 10 0.056 0.024 95%KM(t)UCL <br /> Benzo(g,h,i)perylene 23 7 0.2I 0.040 95%KM(t)UCL <br /> Cha Bene 23 14 0.33 0.081 95%KM(BCA)UCL <br /> Dibenz(a,h)anthracene 23 2 0.0073 0.0068 95%KM(t)UCL <br /> filuoranthene 23 12 0.068 0.027 95%KM(t)UCL <br /> ' Fluorene 23 11 1.4 1 0.48 95%KM(Percentile Bootstrap)UCL <br /> Naphthalene 23 11 1.9 0.36 95%KM(BCA)UCL <br /> Phenanthrene 23 14 2.8 1.8 99% KM(Cheb shev)UCL <br /> ' <br /> Pyrene 23 13 0.19 0.074 9501-KM(Percentile Bootstrap)UCL <br /> METALS <br /> Barium 14 14 230 211 95% Student's-t UCL <br /> Beryllium 14 14 0.94 0.82 95%Student's-t UCL <br /> ' Chromium(Trivalent) 14 14 47.8 43.7 95%Student's-t UCL <br /> Cobalt 14 14 13.5 12.0 95%Student's-t UCL <br /> Copper 14 14 185 103 95%Cheb shev(Mean, Sd)UCL <br /> ' Lead 14 14 40.0 16.3 95%Modified-t UCL <br /> Mercury 14 3 0.019 0.019 95%KM(Percentile Bootstrap)UCL <br /> Molybdenum 14 14 1.0 0.71 95%Approximate Gamma UCL <br /> Nickel 14 14 43.1 39.1 95%Student's-t UCL <br /> Vanadium 14 14 81.6 76.4 95%Student's-t UCL <br /> Zinc 14 14 143 84.6 95%Modified-t UCL <br /> Abbreviations: <br /> BCA=Bias-Corrected Accelerated Percentile Bootstrap method <br /> Conc'n=Concentration <br /> COPCs=Constituents of potential concern <br /> ' Cs=Concentration in soil,mg/kg <br /> KM=Kaplan-Meier nonparametric estimation method <br /> UCL=Upper confidence limit <br /> .Pr <br /> 1. PoUCL Version 4,00.02 was used to calculate exposure point concentrations;where the software identified more than one <br /> appropriate UCL value,the higher value was used in this evaluation. <br /> IC7. <br /> Page 1 of 1 From Sclance to solutions <br />