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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 720-266866/7 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 266866 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 1,2-Dichloroethane-d4(Surr) 93 60-140 <br /> Toluene-d8(Surr) 95 58-140 <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 /> Methyl tert-butyl ether 50.0 49.9 ug/Kg 100 70-144 3 20 <br /> Acetone 250 255 ug/Kg 102 30-162 7 30 <br /> Benzene 50.0 48.7 ug/Kg 97 70-130 0 20 <br /> Dichlorobromomethane 50.0 50.2 ug/Kg 100 70-140 2 20 <br /> Bromobenzene 50.0 49.6 ug/Kg 99 70-130 3 20 <br /> Chlorobromomethane 50.0 51.0 ug/Kg 102 70-130 3 20 <br /> Bromoform 50.0 52.7 ug/Kg 105 59-158 3 20 <br /> Bromomethane 50.0 50.5 ug/Kg 101 59-132 0 20 <br /> 2-Butanone(MEK) 250 262 ug/Kg 105 59-159 8 20 <br /> n-Butylbenzene 50.0 53.5 ug/Kg 107 70-142 2 20 <br /> sec-Butylbenzene 50.0 53.4 ug/Kg 107 70-136 0 20 <br /> tert-Butylbenzene 50.0 51.3 ug/Kg 103 70-130 0 20 <br /> Carbon disulfide 50.0 48.1 ug/Kg 96 60-140 2 20 <br /> Carbon tetrachloride 50.0 49.7 ug/Kg 99 70-142 1 20 <br /> Chlorobenzene 50.0 50.2 ug/Kg 100 70-130 1 20 <br /> Chloroethane 50.0 51.2 ug/Kg 102 65-130 1 20 <br /> Chloroform 50.0 49.1 ug/Kg 98 77-127 1 20 <br /> Chloromethane 50.0 65.9 ug/Kg 132 55-140 7 20 <br /> 2-Chlorotoluene 50.0 50.1 ug/Kg 100 70-138 1 20 <br /> 4-Chlorotoluene 50.0 50.4 ug/Kg 101 70-136 0 20 <br /> Chlorodibromomethane 50.0 50.5 ug/Kg 101 70-146 3 20 <br /> 1,2-Dichlorobenzene 50.0 48.9 ug/Kg 98 70-130 1 20 <br /> 1,3-Dichlorobenzene 50.0 49.8 ug/Kg 100 70-131 2 20 <br /> 1,4-Dichlorobenzene 50.0 49.2 ug/Kg 98 70-130 1 20 <br /> 1,3-Dichloropropane 50.0 51.4 ug/Kg 103 70-140 2 20 <br /> 1,1-Dichloropropene 50.0 50.9 ug/Kg 102 70-130 0 20 <br /> 1,2-Dibromo-3-Chloropropane 50.0 53.5 ug/Kg 107 60-145 12 20 <br /> Ethylene Dibromide 50.0 52.5 ug/Kg 105 70-140 3 20 <br /> Dibromomethane 50.0 50.7 ug/Kg 101 70-139 1 20 <br /> Dichlorodifluoromethane 50.0 63.6 ug/Kg 127 37-158 4 20 <br /> 1,1-Dichloroethane 50.0 48.6 ug/Kg 97 70-130 0 20 <br /> 1,2-Dichloroethane 50.0 49.3 ug/Kg 99 70-130 3 20 <br /> 1,1-Dichloroethene 50.0 47.3 ug/Kg 95 74-122 1 20 <br /> cis-1,2-Dichloroethene 50.0 49.5 ug/Kg 99 70-138 0 20 <br /> trans-1,2-Dichloroethene 50.0 46.6 ug/Kg 93 67-130 1 20 <br /> 1,2-Dichloropropane 50.0 49.5 ug/Kg 99 73-127 0 20 <br /> cis-1,3-Dichloropropene 50.0 51.2 ug/Kg 102 68-147 1 20 <br /> trans-1,3-Dichloropropene 50.0 51.8 ug/Kg 104 70-155 2 20 <br /> Ethylbenzene 50.0 52.5 ug/Kg 105 80-137 0 20 <br /> Hexachlorobutadiene 50.0 50.0 ug/Kg 100 70-132 2 20 <br /> Eurofins TestAmerica, Pleasanton <br /> Page 38 of 61 6/10/2019 <br />