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QC Sample Results <br /> Client: Dysert Environmental, Inc TestAmerica Joh ID: 720-86460-1 <br /> Project/Site: Zega Building <br /> Method: 8260E Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCSD 720-244496/7 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 244496 <br /> Spike LCSD LCSD %Ree. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> Bromobenzene 50.0 49.9 ug/Kg 100 70-130 3 20 <br /> Chlorobromomethane 50.0 55.5 ug/Kg 111 70-130 2 20 <br /> Bromoform 50.0 53.8 ug/Kg 108 59-158 2 20 <br /> Bromomethane 50.0 60,4 ug/Kg 121 59-132 1 20 <br /> 2-Butanone(MEK) 250 254 ug/Kg 102 59-159 8 20 <br /> n-Butylbenzene 50.0 50.2 ug/Kg 100 70-142 0 20 <br /> sec-Butylbenzene 50.0 49.6 ug/Kg 99 70-136 1 20 <br /> tert-Butyl benzene 50.0 49.5 ug/Kg 99 70-130 1 20 <br /> Carbon disulfide 50.0 53.4 ug/Kg 107 60,-140 1 20 <br /> Carbon tetrachloride 50.0 54.8 ug/Kg 110 70-142 2 20 <br /> Chlorobenzene 50.0 52.1 ug/Kg 104 70-130 1 20 <br /> Chloroethane 50.0 55.4 ug/Kg 111 65-130 2 20 <br /> Chloroform 50.0 53.6 ug/Kg 107 77-127 2 20 <br /> Chloromethane 50.0 61.7 ug/Kg 123 55-140 8 20 <br /> 2-Chlorotoluene 50.0 49.3 ug/Kg 99 70-138 2 20 <br /> 4-Chlorotoluene 50.0 50.6 ug/Kg 101 70-136 1 20 <br /> Chlorodibromomethane 50.0 55.6 ug/Kg 111 70-146 1 20 <br /> 1,2-Dichlorobenzene 50.0 50.7 ug/Kg 101 70-130 2 20 <br /> 1,3-Dichlorobenzene 50.0 50.4 ug/Kg 101 70-131 0 20 <br /> 1,4-Dichlorobenzene 50.0 50.8 ug/Kg 102 70-130 0 20 <br /> 1,3-Dichloropropane 50.0 54.2 ug/Kg 108 70-140 3 20 <br /> 1,1-Dichloropropene 50.0 53.7 ug/Kg 107 70-130 0 20 <br /> 1,2-Dibromo-3-Chlorapropane 50.0 50.5 ug/Kg 101 60-145 6 20 <br /> Ethylene Dibromide 50.0 55.0 ug/Kg 110 70-140 1 20 <br /> Dibramomethane 50.0 51.5 ugiKg 103 70-139 1 20 <br /> Dichlorodifluoromethane 50.0 71.6 ugiKg 143 37-158 3 20 <br /> 1,1-Dichloroethane 50.0 52.9 ugiKg 106 70-130 0 20 <br /> 1,2-Dichloroethane 50.0 54.8 ugiKg 110 70-130 2 20 <br /> 1,1-Dichloroethene 50.0 51.6 ug/Kg 103 74-122 3 20 <br /> cis-1,2-Dichloroethene 50.0 52.7 ugiKg 105 70-138 0 20 <br /> trans-1,2-Dichloroethene 50.0 50.8 ugiKg 102 67-130 3 20 <br /> 1,2-Dichloropropane 50.0 54.8 ug/Kg 110 73-127 0 20 <br /> cis-1,3-Dichloroprope ne 50.0 56.5 ugiKg 113 68-147 0 20 <br /> trans-1,3-Dichloropropene 50.0 55.0 ug/Kg 110 70-155 1 20 <br /> Ethylbenzene 50.0 49.3 ug/Kg 99 80-137 1 20 <br /> Hexachlorobutadiene 50.0 50.5 ug/Kg 101 70-132 0 20 <br /> 2-Hexanone 250 262 ug/Kg 105 62-158 6 20 <br /> lsopropylbenzene 50.0 51.5 ug/Kg 103 70-130 1 20 <br /> 4-Isopropyltoluene 50.0 50.2 ug/Kg 100 70-133 1 20 <br /> Methylene Chloride 50.0 51.7 ug/Kg 103 70-134 2 20 <br /> 4-Methyl-2-pentenone(MIBK) 250 260 ug/Kg 104 60-160 4 20 <br /> Naphthalene 50.0 51.5 ug/Kg 103 60-147 8 20 <br /> N-Propylbenzene 50.0 50.4 ug/Kg 101 70-130 2 20 <br /> Styrene 50.0 53.3 ug/Kg 107 70-130 2 20 <br /> 1,1,1,2-Tetrachloroethane 50.0 55.7 ug/Kg 111 70-130 1 20 <br /> 1,1,2,2-Tetrachioroethane 50.0 48.3 ug/Kg 97 70-146 1 20 <br /> Tetra chloroethene 50.0 54.4 ug/Kg 109 70-132 3 20 <br /> Toluene 50.0 50.5 ug/Kg 101 75-120 1 20 <br /> TestAmerica Pleasanton <br /> Page 39 of 75 512112018 <br />