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QC Sample Results <br /> Client: Dysert Environmental, Inc TestAmerica Job ID: 720-86460-1 <br /> Project/Site: Zega Building <br /> Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCS 720-24452315 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type:Total/NA <br /> Analysis Batch: 244523 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 1,2-Dichloroethane-d4(Surr) 99 60-140 <br /> Toluene-d8(Surr) 102 58-140 <br /> Lab Sample ID: LCS 720-244523!7 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA ' <br /> Analysis Batch: 244523 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> Gasoline Range Organics(GRO) 1000 887 ug/Kg 89 70-122 <br /> -C4-C12 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorcbenzene 106 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 101 60-140 <br /> Tolaene-d8(Surr) 101 58-140 <br /> Lab Sample ID: LCSD 720-244523/6 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type:TotaIINA <br /> Analysis Batch: 244523 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit ❑ %Rec Limits RPD Limit <br /> Methyl tert-butyl ether 50.0 52.1 ug/Kg 104 70-144 1 20 <br /> Acetone 250 195 ug/Kg 78 30-162 3 30 <br /> Benzene 50.0 50.5 ug/Kg 101 70-130 1 20 <br /> Dichlorabromomethane 50.0 53.2 ug/Kg 106 70-140 0 20 <br /> Bromobenzene 50.0 50.8 ug/Kg 102 70-130 0 20 <br /> Chic robromomethane 50.0 53.8 ug/Kg 108 70-130 1 20 <br /> Bromoform 50.0 50.0 ug/Kg 100 59-158 0 20 <br /> Bromomethane 50.0 45.0 ug/Kg 90 59-132 28 20 <br /> 2-Butanone(MEK) 250 195 ug/Kg 78 59-159 0 20 <br /> n-Butylbenzene 50.0 48.5 ug/Kg 97 70-142 1 20 <br /> sec-Butylbenzene 50.0 47.9 ug/Kg 96 70-136 0 20 <br /> tent-Butylbenzene 50.0 47.9 ug/Kg 96 70-130 1 20 <br /> Carbon disulfide 50.0 48.7 ug/Kg 97 60-140 1 20 <br /> Carbon tetrachloride 50.0 51.1 ug/Kg 102 70-142 0 20 <br /> Chlorobenzene 50.0 50.0 ug/Kg 100 70-130 0 20 <br /> Chloroethane 50,0 48.0 ug/Kg 96 65-130 35 20 <br /> Chloroform 50.0 51.3 ug/Kg 103 77-127 0 20 <br /> Chloromethane 50.0 39.8 ug/Kg 80 55-140 1 20 <br /> 2-Chlorotoluene 50.0 48.5 ug/Kg 97 70-138 1 20 <br /> 4-Chlorotoluene 50.0 49.4 ug/Kg 99 70-136 1 20 <br /> Chlorod ibromom ethane 50.0 54.7 ug/Kg 109 70-146 0 20 <br /> 1,2-Dichlorobenzene 50.0 51.8 ug/Kg 104 70-130 1 20 <br /> 13-Dichlorobenzene 50.0 50.9 ug/Kg 102 70-131 1 20 <br /> 1,4-❑ichlorobenzene 50.0 50.9 ug/Kg 102 70-130 1 20 <br /> 1,3-Dichloropropane 50.0 52.4 ug/Kg 105 70-140 0 20 <br /> 1,1-Dichloropropene 50.0 48.6 ug/Kg 97 70-130 2 20 <br /> 1,2-Dibromo-3-Chloropropane 50.0 42.5 ug/Kg 85 60-145 3 20 <br /> TestAmerica Pleasanton <br /> Page 44 of 75 5/21/2018 <br />