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TABLE 3 SUMMARY OF SOIL ANALYTICAL DATA-METALS 902 EAST SCOTTS AVENUE a me a g ro u p STOCKTON,CALIFORNIA ANTEA GROUP NO.UPR82572A Sample Depth Sample Antimony Arsenic' Barium Beryllium Cadmium Chromium Cobalt Copper Lead Mercury Molybdenum Nickel Selenium Silver Thallium' Vanadium Zinc' ID (feet) Date (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) EPA Region 9lndu,trial RSL,° 410 1.6 190,000 2,000 800 5.6 300 41,000 800 34 5,100 47,000 5,100 5,100 NA 72 310,000 RWQCB Direct Exposure Soil Screening Leveli 310 15.0 2,600 98 39 NE 94 310,000 750 580 3,900 260 3,900 3,900 620 770 230,000 Background Reference Concentrations c 0.60 3.5 509.0 1.28 0.36 121 14.9 28.7 23.9 0.26 1.3 57 0.058 0.80 0.56 111 149 Soil Samples B11-2.0-2.5 2.0-2.5 04/12/12 BDL 5.5 140 BDL BDL 35 13 27 21 0.098 BDL 27 BDL BDL BDL 46 36 B1-2.0-2.5 2.0-2.5 04/13/12 BDL 5.8 290 BDL BDL 43 13 32 7.6 0.018 BDL 31 BDL BDL BDL 88 45 B12-4.5-5.0 4.5-5.0 04/12/12 BDL BDL 180 BDL BDL 39 12 27 20 0.020 BDL 29 BDL BDL BDL 61 43 B13-2.5-3.0 2.5-3.0 04/12/12 BDL BDL 310 BDL BDL 38 18 31 9.9 0.033 BDL 33 BDL BDL BDL 65 40 B14-2.5-3.0 2.5-3.0 04/12/12 BDL 5.8 240 BDL BDL 61 12 38 78 0.042 BDL 35 BDL BDL BDL 89 57 B15-1.0-1.5 1.0-1.5 04/13/12 2.3 5.0 260 BDL BDL 40 18 35 46 0.046 BDL 35 BDL BDL BDL 68 65 B16-1.0-1.5 1.0-1.5 04/13/12 8.1 35 250 BDL BDL 37 16 170 360 0.16 BDL 40 BDL BDL BDL 54 170 B16-4.5-5.0 4.5-5.0 04/13/12 BDL BDL 320 0.45 BDL 44 16 32 7.0 0.013 1.9 37 BDL BDL BDL 62 46 B17-1.0-1.5 1.0-1.5 04/13/12 8.9 7.0 210 BDL BDL 41 13 85 150 0.22 BDL 35 BDL BDL BDL 52 130 B18-1.0-1.5 1.0-1.5 04/12/12 BDL 3.8 170 BDL BDL 35 12 25 6.1 0.016 BDL 27 BDL BDL BDL 62 39 B19-2.0-2.5 2.0-2.5 04/13/12 BDL 7.6 210 BDL BDL 37 15 29 59 0.11 BDL 30 BDL BDL BDL 52 56 B20-2.0-2.5 2.0-2.5 04/13/12 17 58 5,700 BDL BDL 84 35 1700 300 0.26 3.1 120 BDL BDL 2.1 84 260 B3-1.0-1.5 1.0-1.5 04/13/12 BDL BDL 130 BDL BDL 17 5.7 15 3.3 0.026 BDL 14 BDL BDL BDL 44 32 B4-4.5-5.0 4.5-5.0 04/12/12 BDL 4.3 420 BDL BDL 47 13 32 6.8 0.036 BDL 34 BDL BDL BDL 81 45 B6-2.0-2.5 2.0-2.5 04/12/12 BDL 5.5 260 BDL BDL 40 12 27 10 0.051 BDL 31 BDL BDL BDL 85 44 B7-1.0-1.5 1.0-1.5 04/13/12 11 6.4 380 BDL 0.51 49 9.2 140 220 0.098 BDL 58 BDL BDL BDL 33 170 B7-4.5-5.0 4.5-5.0 04/13/12 BDL 4.9 300 BDL BDL 48 13 34 7.2 0.016 BDL 32 BDL BDL BDL 77 50 B9-1.0-1.5 1.0-1.5 04/12/12 2.8 5.8 110 BDL BDL 35 12 31 18 0.11 BDL 30 BDL BDL BDL 47 37 Abbreviations. Notes. 1.17 CAM metals analyzed by EPA Method 7471A EPA-Environmental Protection Agency A.US EPA Regi,concentrations indicate exceedance of RWQCB Direct Exposure Soil Screening Levels for construction/trench RSLs-Regional Screening Levels B.Direct Expose worker scenario BDL-Analyte not detected above the laboratory's Control Board-SF Bay Region's Screeningfor Environmental Concerns at Sites with Contaminated Soil and Groundwater) minimum reporting level C.Mean background soil concentration from Background Concentrations of Trace and Major Elements in California Soils, NA-not applicable Kearney Foundation of Soil Science-Division of Agriculture and Natural Resources,University of California,March 1996 mg/kg-milligrams per kilogram BOLD concentrations indicate exceedance of the EPA Industrial RSL HIGHLIGHTED concentrations indicate exceedance of RWQCB Direct Exposure Soil Screening Levels for construction/trench worker scenario Italicized concentrations indicate exceedance of background reference concentrations