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Table 1 <br />Soil Analytical Results <br />California Army National Guard, Field Maintenance Shop #24 <br />Stockton, CA <br />Analyte (mg/kg): Photoionization Detections (ppm) a_ 1- <br />C <br />a, co t-Butyl Alcohol c a, N c a, <br />C sec-Butylbenzene t-Butylbenzene 1 1,2-Dichloroethane a., c <br />Pi <br />0 <br />tu Dlisopropyl Ether 1 Isopropylbenzene p-lsopropyltoluene Methyl t-Butyl Ether Naphthalene rn-Propylbenzene Toluene 1,2,4-Trimethyl-benzene c <br />'al <br />E <br />- c Xylenes (total) Boring ID 1 Date Sampled <br />California Tier 2 ESLs - 570 500 0.044 0.075 - - 0.0045 1.4 - - - 0.023 0.033 2.9 - 2.3 <br />Soil Screening Level (SSL) - - 2.6 - 0.0032' 0.0059* 0.0016* 0.0014 0.78 0.37* - - 0.0032* - - 0.69 0.021 , 0.17 10 <br />SB-4 (9-10) 7/20/2016 - 560 3,800 <0.013 <0.17 2.4 1.0 <0.012 <0.0085 2.4 <0.0080 1.4 0.63 <0.0050 60 21 <0.012 430 61 51 <br />SB-4 (14-15) 7/20/2016 1,135 520 3,500 <0.013 <0.17 2.7 1.1 <0.012 <0.0085 3.6 <0.0080 1.9 0.68 <0.0050 63 22 <0.012 330 39 44 <br />SB-4 (16-17) 7/20/2016 648 210 230 <0.013 <0.17 0.50 0.21 <0.012 <0.0085 0.82 <0.0080 0.30 0.14 <0.0050 2.7 1.4 <0.012 28 2.5 3.5 <br />SB-4 (22-23) 7/20/2016 32 49 9.2 <0.013 <0.17 0.077 0.021 <0.012 <0.0085 <0.015 <0.0080 <0.013 0.025 <0.0050 0.63 0.053 <0.012 0.45 0.094 0.052 <br />SB-4 (37-38) 7/20/2016 1,080 400 690 0.043 <0.17 0.78 0.29 <0.012 <0.0085 4.3 <0.0080 0.60 0.24 <0.0050 4.7 2.4 2.1 44 12 63 <br />SB-5 (16-17) 7/21/2016 489 10 12 <0.0026 <0.034 0.070 0.017 <0.0024 <0.0017 0.021 <0.0016 0.010 0.0045 <0.0010 0.33 0.056 <0.0024 1.3 0.16 0.013 <br />SB-5 (20-21) 7/21/2016 387 2,200 890 <0.0065 <0.085 1.3 0.62 <0.0060 <0.0042 17 <0.0040 1.4 0.43 <0.0025 31 14 <0.0060 83 27 19 <br />SB-5 (25-26) 7/21/2016 435 680 24 0.0055 <0.034 0.083 0.044 <0.0024 <0.0017 0.56 <0.0016 0.087 0.024 <0.0010 1.1 0.28 <0.0024 0.49 0.086 0.47 <br />SB-5 (30-31) 7/21/2016 30 17 43 <0.0026 <0.034 0.042 0.012 <0.0024 <0.0017 0.035 <0.0016 0.012 <0.0026 <0.0010 0.080 0.050 <0.0024 0.041 0.024 <0.0068 <br />SB-5 (36-37) 7/21/2016 478 70 1,800 1.9 <0.085 3.2 1.1 <0.0060 <0.0042 27 <0.0040 2.6 0.93 <0.0025 9.0 9.8 <0.0060 87 17 100 <br />SB-6 (14-15) 7/21/2016 200 250 0.22 <0.0013 <0.017 <0.0015 <0.0012 <0.0012 <0.0014 0.0019J <0.00080 <0.0013 <0.0013 <0.00050 0.020 0.0016J <0.0012 0.031 0.014 0.0059J <br />SB-6 (19-20) 7/21/2016 151 16 0.43 <0.0013 <0.017 0.0021 J <0.0012 <0.0012 <0.0014 <0.0015 <0.00080 <0.0013 <0.0013 <0.00050 0.027 <0.0013 <0.0012 0.010 <0.0015 <0.0034 <br />SB-6 (25-26) 7/21/2016 291 200 1.1 <0.0013 <0.017 0.0074 0.0021 J <0.0012 <0.0085 0.014 <0.00080 0.0027 J <0.0013 <0.0050 0.025 0.013 <0.0012 0.0016 J <0.0015 <0.0034 <br />SB-6 (31-32) 7/21/2016 57 4.1 19 0.041 <0.17 0.074 0.038 <0.012 <0.014 0.61 <0.0080 0.092 0.030 J <0.0050 0.64 0.36 <0.012 2.0 0.51 0.23 <br />SB-6 (37-38) 7/21/2016 198 84 1,700 0.022 <0.17 4.0 1.5 <0.012 <0.0085 0.73 <0.0080 1.1 0.95 <0.0050 3.2 5.8 <0.012 23 7.2 2.2 <br />Notes: <br />All results shown in micrograms per liter (mg/kg) <br />TPHd = Total Petroleum Hydrocarbons as Diesel Fuel <br />TPHg = Total Petroleum Hydrocarbons as Gasoline <br />J = Estimated value, compound detected, but at a level below its reporting limit <br /><# = Not detected above reporting limit shown <br />- = Not Reported <br />* = indicates that the SSL is a risk-based soil screening level <br />SSL = Regional Screening Level MCL-based soil screening level <br />CA ESL = California Department of Public Health Tier 2 Environmental Screening Limit Site Specific Criteria (May 2016) <br />USEPA MCL = United States Environmental Protection Agency Maximum Contaminant Level (updated April 2016) <br />Bold results exceed one or more of the listed regulatory levels <br />Page 1 of 1