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TABLE 2 Page 1 of 2 SUMMARY OF DETECTED SOIL CONCENTRATION DATA Tracy High School Tracy Joint Unified School District Sample Location: California P-1 P-2 P-3 P-4 P-5 P-6 SamplelD. Human Health S-011807-RTS-001 S-011807-RTS-002 S-011807-RTS-003 S-011807-RTS-004 S-011807-RTS-005 S-011807-RTS-006 Depth: Screening Levels (845) (7.5-8) (8.5-9) (8.5-9) (8-9) (8.5-9) Sample Date: Soil 1/182007 1/1$2007 1/1&2007 14812007 1/18/2007 140007 Sample Type: Parameter. Units VOCs 1,2,4-Trichlorobenzene mg/kg 0.005 U 0.005 U 0.005 U 0.00096 BJ 0.005 U 0.005 U Acetone mg/kg 0.02 U 0.02 U 0.02 U 0.02 U 0.0062 J 0.02 U Chloroform(Trichloromethane) mg/kg 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U Cyclohexane mg/kg 0.01 U 0.01 U 0.0012 J 0.01 U 0.00%J 0.01 U Ethylbenzene mg/kg 0.005 U 0.005 U 0.005 U 0.0006) 0.005 U 0.005 U Isopropylbenzene mg/kg 0.005 U 0.005 U 0.005 U 0.00121 0.0015 J 0.005 U Methyl cyclohexane mg/kg 0.01 U 0.01 U 0.0029 J 0.00085 J 0.034 0.01 U Methylene chloride mg/kg 0.005 U 0.005 U 0.005 U 0.0015 BJ 0.013 B 0.005 U Xylene(total) mg/kg 0.01 U 0.01 U 0.01 U 0.002 J 0.01 U 0.01 U SVOCs 1-Methylnaphthalene mg/kg 0.33 U 0.33 U 0.1 J 1.6 U 0.33 U 0.33 U 2-Methyhiaphthalene mg/kg 0.33 U 0.33 U 0.17 J 1.6 U 0.33 U 0.33 U Acenaphthylene mg/kg 0.011 J 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Anthracene mg/kg 0.019 J 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Benzo(a)anthracene mg/kg 0.11 J 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Benzo(a)pyrene mg/kg 0.038 1 0.11 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Benzo(b)fluoranthene mg/kg 0.11 J 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Benzo(g,h,i)perylene mg/kg 0.054) 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Benzo(k)fluoranthene mg/kg 0.052 J 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Chrysene mg/kg 0.099 J 0.33 U 0.33 U 0.061 J 0.33 U 0.33 U Dibenz(ah)anthracene mg/kg 0.012 J 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Fluoranthene mg/kg 0.2 J 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Fluorene mg/kg 0.33 U 0.33 U 0.0099 J 1.6 U 0.33 U 0.33 U Indeno(1,2,3-cd)pyrene mg/kg 0.053 J 0.33 U 0.33 U 1.6 U 0.33 U 0.33 U Naphthalene mg/kg 0.0933 0.33 U 0.33 U 0.073 J 1.6 U 0.33 U 0.33 U Phenanthrene mg/kg 0.061 J 0.33 U 0.026 J 0.092 J 0.33 U 0.33 U Pyrene mg/kg 0.16 J 0.33 U 0.33 U 0.036 J 0.33 U 0.33 U Petri Prod Total Petroleum Hydrocarbons-extractable(DRO) mg/kg 52 B 0.36 BJ 53B 120 B 22B 0.44 BJ Total Petroleum Hydrocarbons-purgeable(GRO) mg/kg 0.1 U 0.1 U 0.065 J 3.2 0.062 J 0.1 U General Chemistry Total Solids o 821 81.9 84.9 83.9 81.8 80.2 Notes: U-The analyte was analyzed for,but was not detected above the reported sample quantitation limit J-Lab qualified as estimated B-Lab qualifed as possible method blank contamination