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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 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 /> Chloromethane ND 10.0 11.8 ug/L 118 39-144 8 25 <br /> cis-1,3-Dichloropropene ND 10.0 9.37 ug/L 94 70-133 12 20 <br /> Dibromochloromethane ND 10.0 8.68 ug/L 87 70-148 14 25 <br /> Ethylbenzene ND 10.0 9.23 ug/L 92 70-130 9 20 <br /> Methylene Chloride ND 10.0 9.41 ug/L 94 52-130 7 20 <br /> Tetrachloroethene ND 10.0 10.5 ug/L 105 70-137 8 20 ' <br /> Toluene ND 10.0 9.22 ug/L 92 70-130 8 20 <br /> trans-1,2-Dichloroethene ND 10.0 10.1 ug/L 101 70-130 11 20 <br /> trans-1,3-Dichloropropene ND 10.0 9.67 ug/L 97 70-138 8 25 <br /> Trichloroethene ND 10.0 9.28 ug/L 93 70-130 9 20 <br /> Trichlorofluoromethane ND 10.0 10.2 ug/L 102 60-150 11 25 <br /> Vinyl chloride ND 10.0 10.7 ug/L 107 50-137 9 30 <br /> 1,2-Dichloroethene,Total ND 20.0 19.7 ug/L 98 70-130 8 20 <br /> MSD MSD <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene(Surr) 98 80-120 <br /> Dibromofluoromethane(Surr) 102 76-132 <br /> Toluene-d8(Surr) 100 80-128 <br /> Method: 625 - Semivolatile Organic Compounds (GC/MS) <br /> Lab Sample ID: MB 440-545413/1-A Client Sample ID: Method Blank <br /> Matrix: Water Prep Type: Total/NA <br /> Analysis Batch: 545865 Prep Batch: 545413 <br /> MB MB <br /> Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac <br /> 1,2,4-Trichlorobenzene ND 10 2.5 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 1,2-Dichlorobenzene ND 10 2.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 1,2-Diphenylhydrazine(as ND 20 10 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> Azobenzene) <br /> 1,3-Dichlorobenzene ND 10 2.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 1,4-Dichlorobenzene ND 10 2.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2,4,5-Trichlorophenol ND 20 10 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2,4,6-Trichlorophenol ND 20 10 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2,4-Dichlorophenol ND 10 5.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2,4-Dimethylphenol ND 20 10 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2,4-Dinitrophenol ND 40 20 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2,4-Dinitrotoluene ND 10 5.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2,6-Dinitrotoluene ND 10 5.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2-Chloronaphthalene ND 10 2.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2-Chlorophenol ND 10 2.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2-Methylnaphthalene ND 10 2.5 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2-Methylphenol ND 10 2.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2-Nitroaniline ND 20 10 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 2-Nitrophenol ND 10 2.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 3,3'-Dichlorobenzidine ND 20 7.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 3-Nitroaniline ND 20 8.0 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 4,6-Dinitro-2-m ethyl phenol ND 20 10 ug/L 05/09/1911:25 05/11/1918:53 1 <br /> 4-Bromophenyl phenyl ether ND 10 2.0 ug/L 05/09/19 11:25 05/11/19 18:53 1 <br /> Eurofins TestAmerica, Pleasanton <br /> Page 13 of 31 5/20/2019 <br />