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QC Sample Results <br />Job ID: 310-229849-1Client: WSB & Associates, Inc <br />Project/Site: Kenzie Terrace <br />Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) <br />Client Sample ID: Lab Control SampleLab Sample ID: LCS 310-351212/6 <br />Matrix: Water Prep Type: Total/NA <br />Analysis Batch: 351212 <br />1,1,1-Trichloroethane 20.0 20.58 ug/L 103 70 -129 <br />Analyte <br />LCS LCS <br />DUnitResultQualifier %Rec <br />Spike <br />Added <br />%Rec <br />Limits <br />1,1,2-Trichloroethane 20.0 19.45 ug/L 97 68 -128 <br />Trichloroethene 20.0 20.11 ug/L 101 71 -130 <br />1,2,3-Trichloropropane 20.0 19.85 ug/L 99 61 -137 <br />1,1,2-Trichlorotrifluoroethane 20.0 19.23 ug/L 96 64 -142 <br />1,2,4-Trimethylbenzene 20.0 19.14 ug/L 96 64 -133 <br />1,3,5-Trimethylbenzene 20.0 19.38 ug/L 97 66 -134 <br />Xylenes, Total 40.0 42.54 ug/L 106 70 -128 <br />4-Bromofluorobenzene (Surr)80 -120 <br />Surrogate <br />98 <br />LCS LCS <br />Qualifier Limits%Recovery <br />100Dibromofluoromethane (Surr)79 -120 <br />104Toluene-d8 (Surr)79 -120 <br />Client Sample ID: Lab Control SampleLab Sample ID: LCS 310-351212/7 <br />Matrix: Water Prep Type: Total/NA <br />Analysis Batch: 351212 <br />Bromomethane 20.0 13.10 ug/L 66 22 -150 <br />Analyte <br />LCS LCS <br />DUnitResultQualifier %Rec <br />Spike <br />Added <br />%Rec <br />Limits <br />Chloroethane 20.0 19.15 ug/L 96 61 -139 <br />Chloromethane 20.0 19.27 ug/L 96 48 -150 <br />Dichlorodifluoromethane 20.0 18.89 ug/L 94 50 -150 <br />Dichlorofluoromethane 20.0 18.89 ug/L 94 64 -141 <br />Trichlorofluoromethane 20.0 18.19 ug/L 91 59 -150 <br />Vinyl chloride 20.0 19.43 ug/L 97 65 -141 <br />4-Bromofluorobenzene (Surr)80 -120 <br />Surrogate <br />95 <br />LCS LCS <br />Qualifier Limits%Recovery <br />103Dibromofluoromethane (Surr)79 -120 <br />103Toluene-d8 (Surr)79 -120 <br />Client Sample ID: Matrix SpikeLab Sample ID: 310-229839-B-26 MS <br />Matrix: Water Prep Type: Total/NA <br />Analysis Batch: 351212 <br />Acetone <10.0 50.0 45.37 ug/L 91 37 -150 <br />Analyte <br />MS MS <br />DUnitResultQualifier %Rec <br />Spike <br />Added <br />Sample <br />Result <br />Sample <br />Qualifier <br />%Rec <br />Limits <br />Allyl chloride <2.00 25.0 21.23 ug/L 85 38 -150 <br />Benzene <0.500 25.0 21.98 ug/L 88 54 -128 <br />Bromobenzene <1.00 25.0 22.72 ug/L 91 47 -139 <br />Bromochloromethane <5.00 25.0 21.37 ug/L 85 63 -143 <br />Bromodichloromethane <1.00 25.0 22.45 ug/L 90 50 -135 <br />Bromoform <5.00 25.0 19.32 ug/L 77 40 -139 <br />Butylbenzene, n-<1.00 25.0 22.07 ug/L 88 30 -133 <br />Butylbenzene, sec-<1.00 25.0 21.47 ug/L 86 34 -136 <br />Butylbenzene, tert-<1.00 25.0 21.51 ug/L 86 39 -137 <br />Carbon tetrachloride <2.00 25.0 21.12 ug/L 84 47 -136 <br />Eurofins Cedar Falls <br />Page 62 of 90 5/17/2022 <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15