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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: LCS 720-266866/5 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266866 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> cis-1,3-Dichloropropene 50.0 50.4 ug/Kg 101 68-147 <br /> trans-1,3-Dichloropropene 50.0 50.9 ug/Kg 102 70-155 <br /> Ethylbenzene 50.0 52.8 ug/Kg 106 80-137 <br /> Hexachlorobutadiene 50.0 48.8 ug/Kg 98 70-132 <br /> 2-Hexanone 250 235 ug/Kg 94 62-158 <br /> Isopropylbenzene 50.0 54.2 ug/Kg 108 70-130 ' <br /> 4-Isopropyltoluene 50.0 52.1 ug/Kg 104 70-133 <br /> Methylene Chloride 50.0 48.6 ug/Kg 97 70-134 <br /> 4-Methyl-2-pentanone(MIBK) 250 261 ug/Kg 105 60-160 <br /> Naphthalene 50.0 45.4 ug/Kg 91 60-147 <br /> N-Propylbenzene 50.0 53.0 ug/Kg 106 70-130 <br /> Styrene 50.0 52.2 ug/Kg 104 70-130 <br /> 1,1,1,2-Tetrachloroethane 50.0 49.1 ug/Kg 98 70-130 <br /> 1,1,2,2-Tetrachloroethane 50.0 47.8 ug/Kg 96 70-146 <br /> Tetrachloroethene 50.0 51.7 ug/Kg 103 70-132 <br /> Toluene 50.0 50.1 ug/Kg 100 75-120 <br /> 1,2,3-Trichlorobenzene 50.0 48.0 ug/Kg 96 60-140 <br /> 1,2,4-Trichlorobenzene 50.0 49.1 ug/Kg 98 60-140 <br /> 1,1,1-Trichloroethane 50.0 49.8 ug/Kg 100 70-130 <br /> 1,1,2-Trichloroethane 50.0 50.5 ug/Kg 101 70-130 <br /> Trichloroethene 50.0 50.9 ug/Kg 102 70-133 <br /> Trichlorofluoromethane 50.0 50.2 ug/Kg 100 60-140 <br /> 1,2,3-Trichloropropane 50.0 49.2 ug/Kg 98 70-146 <br /> 1,1,2-Trichloro-1,2,2-trifluoroetha 50.0 49.5 ug/Kg 99 60-140 <br /> ne <br /> 1,2,4-Trimethylbenzene 50.0 52.3 ug/Kg 105 70-130 <br /> 1,3,5-Trimethylbenzene 50.0 52.1 ug/Kg 104 70-131 <br /> Vinyl acetate 50.0 47.7 ug/Kg 95 38-176 <br /> Vinyl chloride 50.0 55.8 ug/Kg 112 58-125 <br /> m-Xylene&p-Xylene 50.0 52.3 ug/Kg 105 70-146 <br /> o-Xylene 50.0 53.5 ug/Kg 107 70-140 <br /> Xylenes,Total 100 106 ug/Kg 106 70-146 <br /> 2,2-Dichloropropane 50.0 51.7 ug/Kg 103 70-162 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 98 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 89 60-140 <br /> Toluene-d8(Surr) 96 58-140 <br /> Lab Sample ID: LCS 720-266866/7 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266866 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> C4-C12 1000 1030 ug/Kg 103 70-122 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 92 45-131 <br /> Eurofins TestAmerica, Pleasanton <br /> Page 37 of 61 6/10/2019 <br />