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QC Sample Results <br /> Client: United Pumping Service TestAmerica Job ID: 440-212315-2 <br /> Project/Site: UPRR-Stockton MR-572 Onespot <br /> Method: 8260B -Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCS 440-479957/5 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 479957 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> 1,3,5-Tri methyl benzene 50.0 55.0 ug/Kg 110 70--125 <br /> 1,3-Dichlorobenzene 50.0 52.1 ug/Kg 104 75-125 <br /> 1,3-Dichloropropane 50.0 53.7 ug/Kg 107 70-125 <br /> 1,4-Dichlorobenzene 50.0 51.7 ug/Kg 103 75-120 <br /> 2,2-Dichloropropane 50.0 54.8 ug/Kg 110 60-145 <br /> 2-Butanone(MEK) 50.0 49.3 ug/Kg 99 40-145 <br /> 2-Chlorotoluene 50.0 56.7 ug/Kg 113 70-125 <br /> 2-Hexanone 50.0 56.1 ug/Kg 112 40-150 <br /> 4-Chlorotoluene 50.0 58.5 ug/Kg 117 75-125 <br /> 4-Methyl-2-pentanone(MIBK) 50.0 61.0 ug/Kg 122 40-145 <br /> Acetone 50.0 55.8 ug/Kg 112 25-145 <br /> Benzene 50.0 52.3 ug/Kg 105 65-120 <br /> Bromobenzene 50.0 52.5 ug/Kg 105 75-120 <br /> Bromochloromethane 50.0 52.2 ug/Kg 104 70-135 <br /> Bromodichloromethane 50.0 54.2 ug/Kg 108 70-135 <br /> Bromoform 50.0 51.2 ug/Kg 102 55-135 <br /> Bromomethane 50.0 44.9 ug/Kg 90 60-145 <br /> Carbon tetrachloride 50.0 47.6 ug/Kg 95 65-140 <br /> Chlorobenzene 50.0 53.1 ug/Kg 106 75-120 <br /> Chloroethane 50.0 49.3 ug/Kg 99 60-140 <br /> Chloroform 50.0 50.0 ug/Kg 100 70-130 <br /> Chloromethane 50.0 42.1 ug/Kg 84 45-145 <br /> cis-1,2-Dichloroethene 50.0 52.6 ug/Kg 105 70-125 <br /> cis-1,3-Dichloropropene 50.0 57.5 ug/Kg 115 75-125 <br /> Dibromochloromethane 50.0 54.7 ug/Kg 109 65-140 <br /> Dibromomethane 50.0 48.7 ug/Kg 97 70-130 <br /> Dichlorodifluoromethane 50.0 43.4 ug/Kg 87 35-160 <br /> Ethylbenzene 50.0 54.8 ug/Kg 110 70-125 <br /> Ethyl-t-butyl ether(ETBE) 50.0 55.2 ug/Kg 110 60-140 <br /> Hexachlorobutadiene 50.0 61.9 ug/Kg 124 60-135 <br /> Isopropyl Ether(DIPE) 50.0 54.5 ug/Kg 109 60-140 <br /> Isopropylbenzene 50.0 54.0 ug/Kg 108 75-130 <br /> m,p-Xylene 50.0 52.4 ug/Kg 105 70-125 <br /> Methylene Chloride 50.0 47.9 ug/Kg 96 55-135 <br /> Methyl-t-Butyl Ether(MTBE) 50.0 49.1 ug/Kg 98 60-140 <br /> Naphthalene 50.0 59.4 ug/Kg 119 55-135 <br /> n-Butylbenzene 50.0 61.4 ug/Kg 123 70-130 <br /> N-Propylbenzene 50.0 58.6 ug/Kg 117 70-130 <br /> o-Xylene 50.0 56.2 ug/Kg 112 70-125 <br /> p4sopropyltoluene 50.0 55.8 ug/Kg 112 75-125 <br /> sec-Butylbenzene 50.0 55.5 ug/Kg 111 70-125 <br /> Styrene 50.0 54.8 ug/Kg 110 75-130 <br /> Tert-amyl-methyl ether(TAME) 50.0 49.4 ug/Kg 99 60-145 <br /> tert-Butyl alcohol(TBA) 500 584 ug/Kg 117 70-135 <br /> tert-Butyl benzene 50.0 53.9 ug/Kg 108 70-125 <br /> Tetrachloroethene 50.0 48.8 ug/Kg 98 70-125 <br /> Toluene 50.0 57.9 ug/Kg 116 70-125 <br /> trans-1,2-Dichloroethene 50.0 53.4 ug/Kg 107 70-125 <br /> TestAmerica Irvine <br /> Page 16 of 32 6/19/2018 <br />