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QC Sample Results <br /> Client: WSP USA Environment& Infrastructure Inc. Job ID: 580-125173-1 <br /> Project/Site: Olin -Tracy, CA <br /> Method: 8260D - Volatile Organic Compounds by GUMS (Continued) <br /> Lab Sample ID: LCS 580-421489/4 Client Sample ID: Lab Control Sample <br /> Matrix: Water Prep Type: Total/NA <br /> Analysis Batch: 421489 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> Toluene-d8(Surr) 98 80-120 • <br /> 1,2-Dichloroethane-d4(Surr) 97 80-120 <br /> Lab Sample ID: LCSD 580-421489/5 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Water Prep Type: Total/NA <br /> Analysis Batch: 421489 <br /> Spike LCSD LCSD %Rec RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> Dichlorodifluoromethane 5.00 4.99 ug/L 100 20-150 5 30 <br /> Chloromethane 5.00 4.38 ug/L 88 32-150 2 33 <br /> Vinyl chloride 5.00 4.75 ug/L 95 41-150 7 32 <br /> Bromomethane 5.00 5.01 ug/L 100 51-148 1 35 <br /> Chloroethane 5.00 4.93 ug/L 99 54-140 3 33 <br /> Trichlorofluoromethane 5.00 5.04 ug/L 101 60-132 4 32 <br /> 1,1-Dichloroethene 5.00 5.07 ug/L 101 60-129 9 29 <br /> 1,1,2-Trichloro-1,2,2-trifluoroetha 5.00 5.35 ug/L 107 62-133 2 33 <br /> ne <br /> Carbon disulfide 5.00 4.77 ug/L 95 54-142 4 34 <br /> Acetone 25.0 31.8 ug/L 127 49-150 5 24 <br /> Methylene Chloride 5.00 5.46 ug/L 109 40-142 2 25 <br /> Methyl tert-butyl ether 5.00 5.10 ug/L 102 61-131 2 27 <br /> Vinyl acetate 12.5 12.4 ug/L 99 38-150 1 35 <br /> trans-1,2-Dichloroethene 5.00 5.24 ug/L 105 69-121 2 27 <br /> 1,1-Dichloroethane 5.00 4.76 ug/L 95 74-120 3 26 <br /> 2,2-Dichloropropane 5.00 4.21 ug/L 84 55-140 6 31 <br /> cis-1,2-Dichloroethene 5.00 4.99 ug/L 100 72-120 4 22 <br /> 2-Butanone(MEK) 25.0 27.4 ug/L 110 37-150 0 35 <br /> Chlorobromomethane 5.00 5.06 ug/L 101 79-121 2 20 <br /> Chloroform 5.00 4.88 ug/L 98 75-120 2 21 <br /> 1,1,1-Trichloroethane 5.00 4.62 ug/L 92 70-121 2 24 <br /> Carbon tetrachloride 5.00 4.39 ug/L 88 66-130 2 24 <br /> 1,1-Dichloropropene 5.00 4.81 ug/L 96 72-125 4 23 <br /> Benzene 5.00 4.89 ug/L 98 80-120 3 22 <br /> 1,2-Dichloroethane 5.00 4.86 ug/L 97 74-127 1 21 <br /> Trichloroethene 5.00 4.67 ug/L 93 72-120 5 22 <br /> 1,2-Dichloropropane 5.00 4.57 ug/L 91 69-130 2 22 <br /> Dibromomethane 5.00 5.01 ug/L 100 65-141 3 22 <br /> Dichlorobromomethane 5.00 4.30 ug/L 86 74-131 1 21 <br /> cis-1,3-Dichloropropene 5.00 4.10 ug/L 82 77-131 1 24 <br /> 4-Methyl-2-pentanone(MIBK) 25.0 24.5 ug/L 98 63-137 6 26 <br /> Toluene 5.00 4.89 ug/L 98 80-126 3 20 <br /> trans-1,3-Dichloropropene 5.00 4.06 ug/L 81 71-138 4 26 <br /> 1,1,2-Trichloroethane 5.00 5.08 ug/L 102 73-127 1 22 <br /> Tetrachloroethene 5.00 4.62 ug/L 92 75-124 4 20 <br /> 1,3-Dichloropropane 5.00 4.83 ug/L 97 69-138 1 19 <br /> 2-Hexanone 25.0 23.8 ug/L 95 56-150 2 29 <br /> Chlorodibromomethane 5.00 4.22 ug/L 84 62-141 1 22 <br /> Ethylene Dibromide 5.00 5.18 ug/L 104 61-143 2 22 <br /> Chlorobenzene 5.00 4.96 ug/L 99 74-123 2 21 <br /> Eurofins Seattle <br /> Page 29 of 37 3/30/2023 <br />