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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 /> .............................._...-._........... <br /> - ----- -- ---- --- - .. ---- - --- ---- <br /> Method: 8260B -Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCS 720-262202/5 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 262202 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> Vinyl acetate 50.0 63.9 ug/Kg 128 38-176 <br /> Vinyl chloride 50.0 52.1 ug/Kg 104 58-125 <br /> m-Xylene&p-Xylene 50.0 53.2 ug/Kg 106 70-146 <br /> o-Xylene 50.0 52.1 ug/Kg 104 70-140 <br /> Xylenes,Total 100 105 ug/Kg 105 70-146 <br /> 2,2-Dichloropropane 50.0 52.1 ug/Kg 104 70-162 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 99 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 96 60-140 <br /> Toluene-d8(Surr) 101 58-140 <br /> Lab Sample ID: LCS 720-262202/7 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 262202 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> Gasoline Range Organics(GRO) 1000 1130 ug/Kg 113 70-122 <br /> -C4-C 12 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene 104 45-131 <br /> 1,2-Dichloroethane-d4(Surr) 95 60-140 <br /> Toluene-d8(Surr) 98 58-140 <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 /> Methyl tert-butyl ether 50.0 53.7 ug/Kg 107 70-144 1 20 <br /> Acetone 250 299 ug/Kg 120 30-162 2 30 <br /> Benzene 50.0 55.3 ug/Kg 111 70-130 0 20 <br /> Dichlorobromomethane 50.0 50.4 ug/Kg 101 70-140 3 20 <br /> Bromobenzene 50.0 51.1 ug/Kg 102 70-130 0 20 <br /> Chlorobromomethane 50.0 46.9 ug/Kg 94 70-130 0 20 <br /> Bromoform 50.0 47.4 ug/Kg 95 59-158 1 20 <br /> Bromomethane 50.0 46.3 ug/Kg 93 59-132 0 20 <br /> 2-Butanone(MEK) 250 260 ug/Kg 104 59-159 1 20 <br /> n-Butylbenzene 50.0 59.7 ug/Kg 119 70-142 0 20 <br /> sec-Butylbenzene 50.0 58.6 ug/Kg 117 70-136 1 20 <br /> tert-Butylbenzene 50.0 57.5 ug/Kg 115 70-130 1 20 <br /> Carbon disulfide 50.0 55.3 ug/Kg 111 60-140 0 20 <br /> Carbon tetrachloride 50.0 50.1 ug/Kg 100 70-142 1 20 <br /> Chlorobenzene 50.0 51.2 ug/Kg 102 70-130 1 20 <br /> Chloroethane 50.0 52.2 ug/Kg 104 65-130 0 20 <br /> Chloroform 50.0 51.3 ug/Kg 103 77-127 1 20 <br /> Chloromethane 50.0 59.4 ug/Kg 119 55-140 1 20 <br /> TestAmerica Pleasanton <br /> Page 13 of 30 3/20/2019 <br />