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WG1823984 <br />Volatile Organic Compounds (GC/MS) by Method 8260B <br />Laboratory Control Sample (LCS) <br />QUALITY CONTROL SUMMARY <br />L1465194-05,08 <br />Cp (LCS) R3764483-1 02/25/22 16:43 <br />Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier 2 <br />Analyte mg/kg mg/kg % % lc <br />Styrene 0.125 0.126 101 72.0-127 <br />1,1,1,2-Tetrachloroethane 0.125 0.126 101 74.0-129 3 <br />Ss <br />1,1,2,2-Tetrachloroethane 0.125 0.117 93.6 68.0-128 <br />1,1,2-Trichlorotrifluoroethane 0.125 0.142 114 61.0-139 4 <br />Tetrachloroethene 0.125 0.137 110 70.0-136 Cn <br />Toluene 0.125 0.124 99.2 75.0-121 <br />1,2,3-Trichlorobenzene 0.125 0.100 80.0 59.0-139 5 <br />Ds <br />1,2,4-Trichlorobenzene 0.125 0.128 102 62.0-137 <br />1,1,1-Trichloroethane 0.125 0.126 101 69.0-126 <br />1,1,2-Trichloroethane 0.125 0.120 96.0 78.0-123 Sr <br />Trichloroethene 0.125 0.135 108 76.0-126 <br />Trichlorofluoromethane 0.125 0.124 99.2 61.0-142 <br />1,2,3-Trichloropropane 0.125 0.132 106 67.0-129 <br />1,2,3-Trimethylbenzene 0.125 0.125 100 74.0-124 <br />1,3,5-Trimethylbenzene 0.125 0.128 102 73.0-127 GI <br />Vinyl chloride 0.125 0.117 93.6 63.0-134 <br />(5)Toluene-d8 104 75.0-131 Al <br />(S)4-Bromofinorobenzene 101 67.0-138 <br />(S)1,2-Dichloroethone-d4 101 70.0-130 <br />Sc <br />L1465139-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) <br />(OS) L1465139-01 02/26/22 00:54 . (MS) R3764483-3 02/26/22 03:27 . (MSD) R3764483-4 02/26/22 03:46 <br />Spike Amount Original Result MSD Result <br />(dry) (dry) MS Result (dry) (dry) MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits <br />Analyte mg/kg mg/kg mg/kg mg/kg % % % % % <br />Acetone 6.41 U 3.45 4.05 53.8 63.2 8 10.0-160 16.1 40 <br />Aciylonitrile 6.41 U 3.79 4.59 59.2 71.6 8 10.0-160 19.0 40 <br />Benzene 1.28 u 1.25 0.996 97.5 77.7 8 10.0-149 22.6 37 <br />Bromobenzene 1.28 U 1.35 1.22 105 94.9 8 10.0-156 10.1 38 <br />Bromodichloromethane 1.28 U 1.29 1.12 101 87.6 8 10.0-143 14.2 37 <br />Bromoform 1.28 u 1.25 1.25 97.5 97.7 8 10.0-146 0.205 36 <br />Bromomethane 1.28 U 0.864 0.661 67.4 51.6 8 10.0-149 26.6 38 <br />n-Butylbenzene 1.28 2.29 7.93 4.84 440 199 8 10.0-160 J5 J3 J5 48.3 40 <br />sec-Butylbenzene 1.28 0.698 2.52 2.27 143 122 8 10.0-159 10.7 39 <br />tert-Butylbenzene 1.28 U 1.47 1.27 115 99.1 8 10.0-156 14.9 39 <br />Carbon tetrachloride 1.28 U 1.44 1.01 112 78.7 8 10.0-145 34.9 37 <br />Chlorobenzene 1.28 U 1.35 1.14 105 88.9 8 10.0-152 16.6 39 <br />Chlorodibromomethane 1.28 U 1.36 1.27 106 99.0 8 10.0-146 6.83 37 <br />Chloroethane 1.28 U 1.06 0.761 82.5 59.4 8 10.0-146 32.6 40 <br />ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br />ATC - San Ramon, CA 2048504278 L1465194 03/03/22 17:32 25 of 35