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QC Sample Results <br /> Client: Specialized Contracting Services Inc Job ID: 720-93292-1 <br /> Project/Site: Irby Ranch Stockpile <br /> Method: 8260B/CA LUFTMS - 8260B / CA LUFT MS (Continued) <br /> Lab Sample ID: LCSD 720-266793/6 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266793 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> 1,4-Dichlorobenzene 50.0 48.6 ug/Kg 97 70-130 1 20 <br /> 1,3-Dichloropropane 50.0 51.0 ug/Kg 102 70-140 2 20 <br /> 1,1-Dichloropropene 50.0 49.7 ug/Kg 99 70-130 2 20 <br /> 1,2-Dibromo-3-Chloropropane 50.0 53.2 ug/Kg 106 60-145 2 20 <br /> Ethylene Dibromide 50.0 51.7 ug/Kg 103 70-140 2 20 <br /> Dibromomethane 50.0 49.5 ug/Kg 99 70-139 2 20 ' <br /> Dichlorodifluoromethane 50.0 44.8 ug/Kg 90 37-158 0 20 <br /> 1,1-Dichloroethane 50.0 49.6 ug/Kg 99 70-130 1 20 <br /> 1,2-Dichloroethane 50.0 43.8 ug/Kg 88 70-130 3 20 <br /> 1,1-Dichloroethene 50.0 48.9 ug/Kg 98 74-122 2 20 <br /> cis-1,2-Dichloroethene 50.0 48.3 ug/Kg 97 70-138 1 20 <br /> trans-1,2-Dichloroethene 50.0 45.8 ug/Kg 92 67-130 0 20 <br /> 1,2-Dichloropropane 50.0 51.6 ug/Kg 103 73-127 1 20 <br /> cis-1,3-Dichloropropene 50.0 50.1 ug/Kg 100 68-147 0 20 <br /> trans-1,3-Dichloropropene 50.0 49.7 ug/Kg 99 70-155 1 20 <br /> Ethylbenzene 50.0 52.4 ug/Kg 105 80-137 1 20 <br /> Hexachlorobutadiene 50.0 48.3 ug/Kg 97 70-132 9 20 <br /> 2-Hexanone 250 256 ug/Kg 102 62-158 7 20 <br /> Isopropylbenzene 50.0 52.5 ug/Kg 105 70-130 2 20 <br /> 4-Isopropyltoluene 50.0 52.3 ug/Kg 105 70-133 4 20 <br /> Methylene Chloride 50.0 49.9 ug/Kg 100 70-134 2 20 <br /> 4-Methyl-2-pentanone(MIBK) 250 292 ug/Kg 117 60-160 2 20 <br /> Naphthalene 50.0 49.8 ug/Kg 100 60-147 3 20 <br /> N-Propylbenzene 50.0 55.0 ug/Kg 110 70-130 4 20 <br /> Styrene 50.0 51.3 ug/Kg 103 70-130 0 20 <br /> 1,1,1,2-Tetrachloroethane 50.0 48.0 ug/Kg 96 70-130 1 20 <br /> 1,1,2,2-Tetrachloroethane 50.0 54.5 ug/Kg 109 70-146 2 20 <br /> Tetrachloroethene 50.0 47.1 ug/Kg 94 70-132 1 20 <br /> Toluene 50.0 51.4 ug/Kg 103 75-120 1 20 <br /> 1,2,3-Trichlorobenzene 50.0 49.5 ug/Kg 99 60-140 6 20 <br /> 1,2,4-Trichlorobenzene 50.0 50.4 ug/Kg 101 60-140 4 20 <br /> 1,1,1-Trichloroethane 50.0 44.7 ug/Kg 89 70-130 1 20 <br /> 1,1,2-Trichloroethane 50.0 52.6 ug/Kg 105 70-130 2 20 <br /> Trichloroethene 50.0 47.7 ug/Kg 95 70-133 1 20 <br /> Trichlorofluoromethane 50.0 43.8 ug/Kg 88 60-140 2 20 <br /> 1,2,3-Trichloropropane 50.0 53.1 ug/Kg 106 70-146 1 20 <br /> 1,1,2-Trichloro-1,2,2-trifluoroetha 50.0 48.2 ug/Kg 96 60-140 2 20 <br /> ne <br /> 1,2,4-Tri methyl benzene 50.0 53.0 ug/Kg 106 70-130 3 20 <br /> 1,3,5-Tri methyl benzene 50.0 52.7 ug/Kg 105 70-131 4 20 <br /> Vinyl acetate 50.0 52.9 ug/Kg 106 38-176 3 20 <br /> Vinyl chloride 50.0 54.1 ug/Kg 108 58-125 4 20 <br /> m-Xylene&p-Xylene 50.0 51.9 ug/Kg 104 70-146 1 20 <br /> o-Xylene 50.0 51.8 ug/Kg 104 70-140 0 20 <br /> Xylenes,Total 100 104 ug/Kg 104 70-146 1 20 <br /> 2,2-Dichloropropane 50.0 47.8 ug/Kg 96 70-162 0 20 <br /> Eurofins TestAmerica, Pleasanton <br /> Page 30 of 61 6/10/2019 <br />