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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 720-266866/6 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266866 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> 2-Hexanone 250 271 ug/Kg 108 62-158 14 20 <br /> Isopropylbenzene 50.0 54.0 ug/Kg 108 70-130 0 20 <br /> 4-Isopropyltoluene 50.0 52.3 ug/Kg 105 70-133 0 20 <br /> Methylene Chloride 50.0 48.4 ug/Kg 97 70-134 0 20 <br /> 4-Methyl-2-pentanone(MIBK) 250 289 ug/Kg 116 60-160 10 20 <br /> Naphthalene 50.0 50.2 ug/Kg 100 60-147 10 20 ' <br /> N-Propylbenzene 50.0 53.7 ug/Kg 107 70-130 1 20 <br /> Styrene 50.0 52.7 ug/Kg 105 70-130 1 20 <br /> 1,1,1,2-Tetrachloroethane 50.0 49.9 ug/Kg 100 70-130 2 20 <br /> 1,1,2,2-Tetrachloroethane 50.0 51.7 ug/Kg 103 70-146 8 20 <br /> Tetrachloroethene 50.0 51.1 ug/Kg 102 70-132 1 20 <br /> Toluene 50.0 50.5 ug/Kg 101 75-120 1 20 <br /> 1,2,3-Trichlorobenzene 50.0 50.2 ug/Kg 100 60-140 5 20 <br /> 1,2,4-Trichlorobenzene 50.0 51.3 ug/Kg 103 60-140 4 20 <br /> 1,1,1-Trichloroethane 50.0 49.7 ug/Kg 99 70-130 0 20 <br /> 1,1,2-Trichloroethane 50.0 52.5 ug/Kg 105 70-130 4 20 <br /> Trichloroethene 50.0 51.0 ug/Kg 102 70-133 0 20 <br /> Trichlorofluoromethane 50.0 49.2 ug/Kg 98 60-140 2 20 <br /> 1,2,3-Trichloropropane 50.0 52.6 ug/Kg 105 70-146 7 20 <br /> 1,1,2-Trichloro-1,2,2-trifluoroetha 50.0 48.3 ug/Kg 97 60-140 2 20 <br /> ne <br /> 1,2,4-Trimethylbenzene 50.0 52.4 ug/Kg 105 70-130 0 20 <br /> 1,3,5-Trimethylbenzene 50.0 51.6 ug/Kg 103 70-131 1 20 <br /> Vinyl acetate 50.0 50.3 ug/Kg 101 38-176 5 20 <br /> Vinyl chloride 50.0 58.1 ug/Kg 116 58-125 4 20 <br /> m-Xylene&p-Xylene 50.0 52.3 ug/Kg 105 70-146 0 20 <br /> o-Xylene 50.0 53.0 ug/Kg 106 70-140 1 20 <br /> Xylenes,Total 100 105 ug/Kg 105 70-146 0 20 <br /> 2,2-Dichloropropane 50.0 51.8 ug/Kg 104 70-162 0 20 <br /> LCSD LCSD <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 96 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 93 60-140 <br /> Toluene-d8(Surr) 96 58-140 <br /> Lab Sample ID: LCSD 720-266866/8 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266866 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> C4-C12 1000 930 ug/Kg 93 70-122 10 20 <br /> LCSD LCSD <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 94 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 92 60-140 <br /> Toluene-d8(Surr) 95 58-140 <br /> Eurofins TestAmerica, Pleasanton <br /> Page 39 of 61 6/10/2019 <br />