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QC Sample Results C <br /> Client: GHD Services Inc. TestAmerica Job ID: 720-78844-1 <br /> Project/Site: UPRR-Ret Tank-Stockton <br /> Method: 8260B/CA_LUFTMS - 8260B/CA LUFT MS (Continued) <br /> Lab Sample ID: LCS 720-221313/5 Client Sample ID: Lab Control Sample <br /> Matrix:Water Prep Type:Total/NA <br /> Analysis Batch: 221313 °/ L <br /> Spike LCS LCS Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> m-Xylene&p-Xylene 25.0 24.1 ug/L 96 70-142 <br /> o-Xylene 25.0 24.7 ug/L 99 70-130 <br /> 2,2-Dichloropropane 25.0 27.0 ug/L 108 70-140 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 91 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 94 72-130 <br /> Toluene-d8(Surr) 98 70-130 <br /> Lab Sample ID: LCS 720-221313/7 Client Sample ID: Lab Control Sample <br /> Matrix:Water Prep Type:Total/NA <br /> Analysis Batch: 221313 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> Gasoline Range Organics(GRO) 500 437 ug/L 87 71-125 F-1 <br /> -C5-C12 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 91 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 94 72-130 <br /> Toluene-d8(Surr) 99 70-130 <br /> Lab Sample ID: LCSD 720-221313/6 Client Sample ID: Lab Control Sample Dup <br /> Matrix:Water Prep Type:Total/NA <br /> Analysis Batch: 221313 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> Methyl tert-butyl ether 25.0 26.1 ug/L 104 62-130 1 20 <br /> Acetone 125 135 ug/L 108 26-180 6 30 <br /> Benzene 25.0 25.0 ug/L 100 79-130 1 20 <br /> Dichlorobromomethane 25.0 25.0 ug/L 100 70-130 0 20 <br /> Bromobenzene 25.0 24.5 ug/L 98 70-130 0 20 <br /> Chlorobromomethane 25.0 25.5 ug/L 102 70-130 1 20 <br /> Bromoform 25.0 25.8 ug/L 103 68-136 1 20 <br /> Bromomethane 25.0 22.1 ug/L 88 43-151 1 20 <br /> 2-Butanone(MEK) 125 129 ug/L 103 54-153 1 20 <br /> n-Butylbenzene 25.0 24.6 ug/L 98 70-142 1 20 <br /> sec-Butylbenzene 25.0 24.4 ug/L 98 70-134 1 20 <br /> tert-Butyl benzene 25.0 24.9 ug/L 100 70-135 1 20 <br /> Carbon disulfide 25.0 22.2 ug/L 89 68-146 2 20 <br /> Carbon tetrachloride 25.0 26.2 ug/L 105 70-146 2 20 <br /> Chlorobenzene 25.0 24.5 ug/L 98 70-130 1 20 <br /> Chloroethane 25.0 22.4 ug/L 89 62-138 1 20 <br /> Chloroform 25.0 24.4 ug/L 98 70-130 0 20 <br /> Chloromethane 25.0 25.3 ug/L 101 52-175 1 20 <br /> 2-Chlorotoluene 25.0 24.9 ug/L 100 70-130 0 20 <br /> 4-Chlorotoluene 25.0 25.5 ug/L 102 70-130 0 20 <br /> Chlorodibromomethane 25.0 27.2 ug/L 109 70-145 1 20 <br /> TestAmerica Pleasanton <br /> Page 16 of 53 4/19/2017 <br />