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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: Matrix SpikeLab Sample ID: 310-229044-B-1-G MS <br />Matrix: Solid Prep Type: Total/NA <br />Analysis Batch: 350927 Prep Batch: 350904 <br />Tetrahydrofuran <0.0982 1.99 1.606 mg/Kg 81 42 -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 />Toluene <0.0982 0.995 1.004 mg/Kg 101 49 -150 <br />1,2,3-Trichlorobenzene <0.0982 0.995 0.6180 mg/Kg 62 37 -150 <br />1,2,4-Trichlorobenzene <0.0982 0.995 0.6573 mg/Kg 66 37 -150 <br />1,1,1-Trichloroethane <0.0982 0.995 0.9065 mg/Kg 91 50 -150 <br />1,1,2-Trichloroethane <0.0982 0.995 0.8906 mg/Kg 89 59 -150 <br />Trichloroethene <0.0982 0.995 0.8708 mg/Kg 88 53 -150 <br />1,2,3-Trichloropropane <0.0982 0.995 0.9285 mg/Kg 93 48 -150 <br />1,1,2-Trichlorotrifluoroethane <0.0982 0.995 0.9354 mg/Kg 94 44 -150 <br />1,2,4-Trimethylbenzene 0.259 0.995 0.9727 mg/Kg 72 28 -150 <br />1,3,5-Trimethylbenzene 0.146 0.995 0.8457 mg/Kg 70 32 -150 <br />Xylenes, Total <0.147 1.99 1.829 mg/Kg 85 36 -150 <br />4-Bromofluorobenzene (Surr)79 -120 <br />Surrogate <br />107 <br />MS MS <br />Qualifier Limits%Recovery <br />102Dibromofluoromethane (Surr)80 -124 <br />105Toluene-d8 (Surr)78 -120 <br />Client Sample ID: Matrix Spike DuplicateLab Sample ID: 310-229044-B-1-H MSD <br />Matrix: Solid Prep Type: Total/NA <br />Analysis Batch: 350927 Prep Batch: 350904 <br />Acetone <0.491 1.95 1.980 mg/Kg 101 30 -150 1 40 <br />Analyte <br />MSD MSD <br />DUnitResultQualifier %Rec <br />Spike <br />Added <br />Sample <br />Result <br />Sample <br />Qualifier <br />%Rec <br />Limits LimitRPD <br />RPD <br />Allyl chloride <0.0982 0.976 0.8977 mg/Kg 92 46 -150 5 33 <br />Benzene <0.0982 0.976 0.8504 mg/Kg 87 49 -150 2 39 <br />Bromobenzene <0.0982 0.976 0.7297 mg/Kg 75 49 -150 0 36 <br />Bromochloromethane <0.0982 0.976 0.9127 mg/Kg 93 48 -150 4 38 <br />Bromodichloromethane <0.0982 0.976 0.8962 mg/Kg 92 45 -150 0 40 <br />Bromoform <0.0982 0.976 0.7051 mg/Kg 72 32 -150 7 39 <br />Butylbenzene, n-0.159 0.976 0.9801 mg/Kg 84 21 -150 7 40 <br />Butylbenzene, sec-<0.0982 0.976 0.7683 mg/Kg 76 35 -150 7 40 <br />Butylbenzene, tert-<0.0982 0.976 0.6692 mg/Kg 69 49 -150 9 39 <br />Carbon tetrachloride <0.0982 0.976 0.8234 mg/Kg 84 43 -150 4 38 <br />Chlorobenzene <0.0982 0.976 0.7987 mg/Kg 82 50 -150 6 35 <br />Chloroform <0.0982 0.976 0.9218 mg/Kg 94 51 -150 1 38 <br />2-Chlorotoluene <0.0982 0.976 0.7799 mg/Kg 80 36 -150 10 39 <br />4-Chlorotoluene <0.0982 0.976 0.7717 mg/Kg 79 40 -150 7 38 <br />Dibromo-3-chloropropane, 1,2-<0.0982 0.976 0.6999 mg/Kg 72 33 -150 5 40 <br />Dibromochloromethane <0.0982 0.976 0.7858 mg/Kg 80 41 -150 5 40 <br />Dibromoethane, 1,2-<0.0982 0.976 0.8418 mg/Kg 86 52 -150 1 36 <br />Dibromomethane <0.0982 0.976 0.8793 mg/Kg 90 51 -150 2 38 <br />Dichlorobenzene, 1,2-<0.0982 0.976 0.7174 mg/Kg 73 45 -150 1 40 <br />Dichlorobenzene, 1,3-<0.0982 0.976 0.6698 mg/Kg 69 47 -150 3 39 <br />Dichlorobenzene, 1,4-<0.0982 0.976 0.7257 mg/Kg 74 46 -150 0 39 <br />Dichloroethane, 1,1-<0.0982 0.976 0.9345 mg/Kg 96 54 -150 6 37 <br />Dichloroethane, 1,2-<0.0982 0.976 0.9377 mg/Kg 96 54 -150 2 37 <br />Dichloroethylene, 1,1-<0.0982 0.976 0.8524 mg/Kg 87 44 -150 5 33 <br />Eurofins Cedar Falls <br />Page 45 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