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QC Sample Results <br /> Client: Union Pacific Railroad Job ID: 720-92832-1 <br /> Project/Site: UPRR-Stockton Monthly& Semi Annual <br /> Method: 624 - Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: 720-92832-1 MS Client Sample ID: S40181W#1 <br /> Matrix: Water Prep Type: Total/NA <br /> Analysis Batch: 546827 <br /> Sample Sample Spike MS MS %Rec. <br /> Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits <br /> Bromoform ND 10.0 7.18 ug/L 72 59-150 <br /> Bromomethane ND 10.0 9.20 ug/L 92 62-131 <br /> Carbon tetrachloride ND 10.0 8.33 ug/L 83 60-150 <br /> Chlorobenzene ND 10.0 8.77 ug/L 88 70-130 <br /> Chloroethane ND 10.0 9.33 ug/L 93 68-130 <br /> Chloroform ND 10.0 8.28 ug/L 83 70-130 ' <br /> Chloromethane ND 10.0 10.9 ug/L 109 39-144 <br /> cis-1,3-Dichloropropene ND 10.0 8.31 ug/L 83 70-133 <br /> Dibromochloromethane ND 10.0 7.58 ug/L 76 70-148 <br /> Ethylbenzene ND 10.0 8.41 ug/L 84 70-130 <br /> Methylene Chloride ND 10.0 8.77 ug/L 88 52-130 <br /> Tetrachloroethene ND 10.0 9.68 ug/L 97 70-137 <br /> Toluene ND 10.0 8.50 ug/L 85 70-130 <br /> trans-1,2-Dichloroethene ND 10.0 9.06 ug/L 91 70-130 <br /> trans-1,3-Dichloropropene ND 10.0 8.93 ug/L 89 70-138 <br /> Trichloroethene ND 10.0 8.52 ug/L 85 70-130 <br /> Trichlorofluoromethane ND 10.0 9.20 ug/L 92 60-150 <br /> Vinyl chloride ND 10.0 9.77 ug/L 98 50-137 <br /> 1,2-Dichloroethene,Total ND 20.0 18.2 ug/L 91 70-130 <br /> MS MS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene(Surr) 98 80-120 <br /> Dibromofluoromethane(Surr) 99 76-132 <br /> Toluene-d8(Surr) 98 80-128 <br /> Lab Sample ID: 720-92832-1 MSD Client Sample ID: S40181W#1 <br /> Matrix: Water Prep Type: Total/NA <br /> Analysis Batch: 546827 <br /> Sample Sample Spike MSD MSD %Rec. RPD <br /> Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> 1,1,1-Trichloroethane ND 10.0 9.27 ug/L 93 70-130 10 20 <br /> 1,1,2,2-Tetrachloroethane ND 10.0 10.9 ug/L 109 63-130 12 30 <br /> 1,1,2-Trichloroethane ND 10.0 9.28 ug/L 93 70-130 8 25 <br /> 1,1-Dichloroethane ND 10.0 9.39 ug/L 94 65-130 8 20 <br /> 1,1-Dichloroethene ND 10.0 10.5 ug/L 105 70-130 8 20 <br /> 1,2-Dichlorobenzene ND 10.0 10.5 ug/L 105 70-130 11 20 <br /> 1,2-Dichloroethane ND 10.0 9.43 ug/L 94 56-146 5 20 <br /> 1,2-Dichloropropane ND 10.0 8.99 ug/L 90 69-130 5 20 <br /> 1,3-Dichlorobenzene ND 10.0 10.5 ug/L 105 70-130 9 20 <br /> 1,4-Dichlorobenzene ND 10.0 10.8 ug/L 108 70-130 9 20 <br /> Benzene ND 10.0 10.1 ug/L 101 66-130 8 20 <br /> Bromodichloromethane ND 10.0 8.72 ug/L 87 70-138 8 20 <br /> Bromoform ND 10.0 7.93 ug/L 79 59-150 10 25 <br /> Bromomethane ND 10.0 9.79 ug/L 98 62-131 6 25 <br /> Carbon tetrachloride ND 10.0 9.13 ug/L 91 60-150 9 25 <br /> Chlorobenzene ND 10.0 9.44 ug/L 94 70-130 7 20 <br /> Chloroethane ND 10.0 10.4 ug/L 104 68-130 11 25 <br /> Chloroform ND 10.0 8.88 ug/L 89 70-130 7 20 <br /> Eurofins TestAmerica, Pleasanton <br /> Page 12 of 31 5/20/2019 <br />