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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 720-266793/5 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266793 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> Xylenes,Total 100 103 ug/Kg 103 70-146 <br /> 2,2-Dichloropropane 50.0 47.8 ug/Kg 96 70-162 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 99 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 89 60-140 <br /> Toluene-d8(Surr) 98 58-140 <br /> Lab Sample ID: LCS 720-266793/7 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266793 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> C4-C12 1000 948 ug/Kg 95 70-122 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 94 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 85 60-140 <br /> Toluene-d8(Surr) 96 58-140 <br /> Lab Sample ID: LCSD 720-266793/6 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266793 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> Methyl tert-butyl ether 50.0 49.6 ug/Kg 99 70-144 3 20 <br /> Acetone 250 277 ug/Kg 111 30-162 5 30 <br /> Benzene 50.0 48.7 ug/Kg 97 70-130 1 20 <br /> Dichlorobromomethane 50.0 46.9 ug/Kg 94 70-140 1 20 <br /> Bromobenzene 50.0 49.6 ug/Kg 99 70-130 2 20 <br /> Chlorobromomethane 50.0 49.1 ug/Kg 98 70-130 1 20 <br /> Bromoform 50.0 49.9 ug/Kg 100 59-158 2 20 <br /> Bromomethane 50.0 45.5 ug/Kg 91 59-132 2 20 <br /> 2-Butanone(MEK) 250 256 ug/Kg 102 59-159 9 20 <br /> n-Butylbenzene 50.0 54.2 ug/Kg 108 70-142 6 20 <br /> sec-Butylbenzene 50.0 53.9 ug/Kg 108 70-136 4 20 <br /> tert-Butylbenzene 50.0 51.9 ug/Kg 104 70-130 5 20 <br /> Carbon disulfide 50.0 50.4 ug/Kg 101 60-140 1 20 <br /> Carbon tetrachloride 50.0 44.1 ug/Kg 88 70-142 1 20 <br /> Chlorobenzene 50.0 49.9 ug/Kg 100 70-130 1 20 <br /> Chloroethane 50.0 49.9 ug/Kg 100 65-130 3 20 <br /> Chloroform 50.0 46.9 ug/Kg 94 77-127 1 20 <br /> Chloromethane 50.0 49.3 ug/Kg 99 55-140 1 20 <br /> 2-Chlorotoluene 50.0 51.4 ug/Kg 103 70-138 2 20 <br /> 4-Chlorotoluene 50.0 51.9 ug/Kg 104 70-136 4 20 <br /> Chlorodibromomethane 50.0 46.8 ug/Kg 94 70-146 1 20 <br /> 1,2-Dichlorobenzene 50.0 48.5 ug/Kg 97 70-130 2 20 <br /> 1,3-Dichlorobenzene 50.0 49.2 ug/Kg 98 70-131 2 20 <br /> Eurofins TestAmerica, Pleasanton <br /> Page 29 of 61 6/10/2019 <br />