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Preliminary Environmental Assessment Report <br /> Pittman Elementary School,Stockton,CA <br /> December 10,2003 <br /> Page 12 <br /> Table 7-Laboratory Analytical Results awn Area -CAM 17 Metals <br /> Antimony Arsenic Barium Beryllium Cadmiuml Chromium Hhxavalew Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc <br /> Reporting Limit Range(mg/kg): 1.2-1.6 LI-1.6 1.2-1.60.58-0.78 0.58-1.3 0.58-0.78 0.11-0.17 1.2-1.62.3-3.10.92-1.20.038-0.051 2.3-3.1 4.6-6.2 1.5-2.0 1.2-1.6 1.4-1.9 1.2-1.6 2.3-3.1 <br /> PRG(mg/kg): 31 0.394/22* 5,400 150 37 210 30 900 3,100 I50 23 390 1600 390 390 5.2 550 23,000 <br /> Sample ID Date <br /> 3638F-LI-S 08/062003 <12 9.9 340 0.54* 0.39• 62 0.087* 20 45 80 0.097 0.59* 53 <1.5 0.50* <1.4 72 100 <br /> 3638F-LI-D 08106/2003 NA 6.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <br /> 3638F-L3-S 08/062003 0.40• 9.4 350 0.55• <0.64 67 0.79 22 50 51 0.130 0.49• 58 <1.7 0.58* <1.5 88 IS <br /> 3638F-L3-D 08106/2003 <1.3 8.3 420 0.91 . <1.3 97 1.5 26 69 39 0.210 <2.6 76 <1.7 0.47• <1.6 130 100 <br /> 3638F-1.5-S 08/062003 NA 7.7 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <br /> 3638F-L7-S 08/062003 0.38• 15 310 0.63 <0.59 73 0.43 20 47 63 0.087 0.46* 55 <1.5 0.32* <1.4 89 210 <br /> 3638F-L7-S 08/0612003 NA 14 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <br /> 3638F-L7-D 08/06/2003FNA <br /> 4.3 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <br /> 3638F-L9-S 08/06/2003 5.2 440 0.48• 0.15* 71 0.33 17 49 68 0.057 Q.5 52 <1.6 0.47* <1.5 78 120 <br /> 3638F-L9-D 0810612003 5.8 390 0.92 <0.60 81 NA 19 49 13 0.600 <2.4 60 <1.6 0.34• <1.4 96 73 <br /> 3638F-LII-S 08/062003 7.6 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <br /> 3638F-L13-S 08/062003 8.2 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <br /> 3638F-LI5-S 08/06/2003 Z6 220 0.20• <0.59 51 NA 16 37 59 0.120 0.33* 40 <1.5 0.50* <1.4 60 90 <br /> 3638F-LI6-S 08/062003 <1.2 7.5 220 0.20* <0.58 52 NA - 15 37 58 0.120 0.35* 41 <1.5 0.47• <1.4 59 100 <br /> Bac round <br /> 3638F-BI 08/062003 <1.3 8.9 260 0.38* <0.64 58 0.63 19 47 61 0.100 <2.6 47 <1.7 0.52* <1.5 70 95 <br /> 3638F-B2 08/06/2003 <1.3 6.5 240 0.27* <0.67 58 0.71 16 41 46 0.051 <2.7 46 <1.7 0.54* <1.6 74 84 <br /> 3638F-B3 08/06/2003 <1.6 7.6 250 0.26* <0.78 62 0.37 16 44 91 0.087 0.50* 47 Q.0 0.57* <1.9 73 <br /> 3638F-B3 08/062003 NA NA NA NA NA NA 0.72 NA NA NA NA NA NA NA NA NA NA NA <br /> 3638F-B4 08/062003 0.41• 7.1 220 0.17* <0.63 46 1.1 15 39 120 0.140 Q.5 35 <1.6 0.56* <1.5 65 100 <br /> 3638F-HS 08/062003 0.39* 13 230 0.30* <0.63 51 <6.4 18 40 92 0.054 Q.5 40 <1.6 0.52* <1.5 70 120 <br /> 3638F-B6 08/062003 <1.2 6.5 210 0.17* <0.62 40 0.36 13 35 41 0.100 <2.5 31 <1.6 0.49• <1.5 60 88 <br /> 3638F-B7 08/06/2003 <1.2 6.3 260 0.18• 0.083* 45 0.51 14 40 200 0.150 0.43• 40 <1.6 0.48* <1.5 54 140 <br /> 363813-B8 08/06/2003 <I.3 6.4 210 0.13• <0.67 36 1.1 14 32 46 0.061 0.39* 28 <1.8 0.48* <1.6 61 81 <br /> mg/kg:milligrams per kilogram,parts per million NA:Not analyzed for this constituent <br /> PRG:USEPA Region 9 Residential Preliminary Remediation Goal <:not detected at the reporting limit shown <br /> 412 Arsenic cancer endpoint PRG ♦:Arsenic non-cancer endpoint PRG <br /> *:Detected concentrations are below laboratory reporting limits and are estimated(j"flagged). Italicized items are subsurface samples and their analytical results. <br /> Notes: Sample 3638F-L7-S was initially analyzed for arsenic,the CAM 17 Metals analyses were requested based on the arsenic result. <br /> 0 dWh Sample 3638F-B3 was submitted for hexavalent chromium on two occasions by mistake. <br /> Z <br /> 0 <br /> :t1 <br />