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WG1720943 QUALITY CONTROL SUMMARY <br /> Volatile Organic Compounds (GC/MS) by Method 8260B 1-1388062-12,13,14 <br /> Laboratory Control Sample (LCS) FP1(LCS)R3692111-1 08/10/21 22:03 <br /> Spike Amount LCS Result LCS Rec. Rec.Limits LCS Qualifier z <br /> Analyte ug/I ug/I % % TC <br /> 4-Methyl-2-pentanone(MIBK) 25.0 29.8 119 68.0-142 <br /> Methyl tert-butyl ether 5.00 5.50 110 68.0-125 FSS <br /> Naphthalene 5.00 4.76 95.2 54.0-135 <br /> n-Propylbenzene 5.00 5.37 107 77.0-124 rCn <br /> Styrene 5.00 4.96 99.2 73.0-130 <br /> 1,1,1,2-Tetrachloroethane 5.00 5.60 112 75.0-125 <br /> 1,1,2,2-Tetrachloroethane 5.00 6.00 120 65.0-130 s <br /> Sr <br /> Tetrachloroethene 5.00 5.34 107 72.0-132 <br /> Toluene 5.00 5.36 107 79.0-120 <br /> 1,1,2-Trichlorotrifluoroethane 5.00 4.95 99.0 69.0-132 <br /> 1,2,3-Trichlorobenzene 5.00 5.47 109 50.0-138 <br /> 1,2,4-Trichlorobenzene 5.00 5.05 101 57.0-137 7G1 <br /> 1,1,1-Trichloroethane 5.00 5.63 113 73.0-124 <br /> 1,1,2-Trichloroethane 5.00 5.39 108 80.0-120 <br /> Trichloroethene 5.00 5.37 107 78.0-124 FAI <br /> Trichlorofluoromethane 5.00 4.85 97.0 59.0-147 <br /> 1,2,3-Trichloropropane 5.00 5.83 117 73.0-130 [SC <br /> 1,2,3-Trimethylbenzene 5.00 5.43 109 77.0-120 <br /> 1,2,4-Trimethylbenzene 5.00 5.69 114 76.0-121 <br /> 1,3,5-Trim ethyl benzene 5.00 5.47 109 76.0-122 <br /> Vinyl chloride 5.00 5.80 116 67.0-131 <br /> Xylenes,Total 15.0 15.8 105 79.0-123 <br /> (S)Toluene-d8 105 80.0-120 <br /> (S)4-Bromof/uorobenzene 101 77.0-126 <br /> (S)1,2-Dich/oroethane-d4 103 70.0-130 <br /> ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: <br /> Fulcrum Resources Env-Monrovia,CA 202107-8656 L1388062 08/16/21 15:01 31 of 43 <br />