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QC Sample Results <br /> Client: GHD Services Inc. TestAmerica Job ID: 720-91968-1 <br /> Project/Site: UPRR-Tracy Substation <br /> Method: 8260B -Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCSD 720-262202/6 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 262202 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> o-Xylene 50.0 52.6 ug/Kg 105 70.140 1 20 <br /> Xylenes,Total 100 106 ug/Kg 106 70-146 0 20 <br /> 2,2-Dichloropropane 50.0 52.6 ug/Kg 105 70-162 1 20 <br /> LCSD LCSD <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 100 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 96 60-140 <br /> Toluene-d8(Surr) 102 58-140 <br /> Lab Sample ID: LCSD 720-262202/8 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 262202 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> Gasoline Range Organics(GRO) 1000 1130 ug/Kg 113 70-122 0 20 <br /> -C4-C 12 <br /> LCSD LCSD <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 104 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 96 60-140 <br /> Toluene-d8(Surr) 98 58-140 <br /> Lab Sample ID: 720-91968-1 MS Client Sample ID:WR#19721 <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 262202 Prep Batch: 262251 <br /> Sample Sample Spike MS MS %Rec. <br /> Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits <br /> Methyl teri-butyl ether ND 47.3 53.7 ug/Kg 113 69-130 <br /> Acetone ND 237 375 F1 ug/Kg 159 37-150 <br /> Benzene ND 47.3 52.8 ug/Kg 111 70.130 <br /> Dichlorobromomethane ND 47.3 49.8 ug/Kg 105 64-135 <br /> Bromobenzene ND 47.3 50.1 ug/Kg 106 70-130 <br /> Chlorobromomethane ND 47.3 46.4 ug/Kg 98 65-130 <br /> Bromoform ND 47.3 49.4 ug/Kg 104 58-132 <br /> Bromomethane ND 47.3 44.8 ug/Kg 95 56-130 <br /> 2-Butanone(MEK) ND 237 273 ug/Kg 115 41-150 <br /> n-Butylbenzene 1.4 J 47.3 48.5 ug/Kg 99 60-145 <br /> sec-Butylbenzene ND 47.3 48.8 ug/Kg 103 64-137 <br /> tert-Butylbenzene ND 47.3 49.9 ug/Kg 105 63-134 <br /> Carbon disulfide ND 47.3 51.2 ug/Kg 108 10-150 <br /> Carbon tetrachloride ND 47.3 45.4 ug/Kg 96 54-130 <br /> Chlorobenzene ND 47.3 51.7 ug/Kg 109 70-130 <br /> Chloroethane ND 47.3 51.7 ug/Kg 109 61-130 <br /> Chloroform ND 47.3 49.6 ug/Kg 105 67-130 <br /> Chloromethane ND 47.3 59.4 ug/Kg 125 50-131 <br /> 2-Chlorotoluene ND 47.3 56.8 ug/Kg 120 70-130 <br /> 4-Chlorotoluene ND 47.3 56.9 ug/Kg 120 70-130 <br /> Chlorodibromomethane ND 47.3 47.5 ug/Kg 100 60-141 <br /> TestAmerica Pleasanton <br /> Page 15 of 30 3/20/2019 <br />