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QC Sample Results C <br /> Client: Stantec Consulting Corp. Job ID: 320-59973-1 <br /> Project/Site: 7-11 No 41531 <br /> Method: 82608 - Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCS 320-370408/6 Client Sample ID: Lab Control Sample <br /> Matrix: Water Prep Type: Total/NA <br /> Analysis Batch: 370408 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> 1,2-Dichlorobenzene 20.0 18.32 ug/L 92 77-120 <br /> 1,3-Dichlorobenzene 20.0 18.45 ug/L 92 78-120 <br /> 1,4-Dichlorobenzene 20.0 18.30 ug/L 91 74-120 <br /> Dichlorodifluoromethane 20.0 14.51 ug/L 73 39-161 <br /> 1,1-Dichloroethane 20.0 17.35 ug/L 87 79-120 <br /> 1,2-Dichloroethane 20.0 18.34 ug/L 92 77-128 ' <br /> 1,1-Dichloroethene 20.0 16.13 ug/L 81 74-120 <br /> 1,2-Dichloropropane 20.0 18.39 ug/L 92 75-125 <br /> 1,3-Dichloropropane 20.0 18.53 ug/L 93 79-120 <br /> 2,2-Dichloropropane 20.0 16.29 ug/L 81 75-127 <br /> 1,1-Dichloropropene 20.0 17.40 ug/L 87 77-120 <br /> Ethylbenzene 20.0 18.20 ug/L 91 80-120 <br /> Hexachlorobutadiene 20.0 20.98 ug/L 105 69-120 <br /> Isopropylbenzene 20.0 18.54 ug/L 93 80-121 <br /> Methylene Chloride 20.0 16.68 ug/L 83 77-120 <br /> Methyl tert butyl ether 20.0 17.41 ug/L 87 71-125 ❑ <br /> m-Xylene&p-Xylene 20.0 18.12 ug/L 91 80-121 <br /> Naphthalene 20.0 19.67 ug/L 98 56-143 <br /> n-Butylbenzene 20.0 20.17 ug/L 101 72-120 <br /> N-Propylbenzene 20.0 18.84 ug/L 94 76-120 <br /> o-Xylene 20.0 18.22 ug/L 91 80-124 <br /> p-Isopropyltoluene 20.0 19.61 ug/L 98 76-120 <br /> sec-Butylbenzene 20.0 19.58 ug/L 98 77-120 <br /> Styrene 20.0 18.59 ug/L 93 80-120 <br /> tert-Butyl alcohol(TBA) 200 166.2 ug/L 83 32-167 <br /> tert-Butylbenzene 20.0 19.20 ug/L 96 78-120 <br /> 1,1,1,2-Tetrachloroethane 20.0 16.91 ug/L 85 79-120 <br /> 1,1,2,2-Tetrachloroethane 20.0 15.58 ug/L 78 74-137 <br /> Tetrachloroethene 20.0 17.14 ug/L 86 74-120 <br /> Toluene 20.0 18.41 ug/L 92 79-126 <br /> trans-1,2-Dichloroethene 20.0 16.84 ug/L 84 76-120 <br /> trans-1,3-Dichloropropene 20.0 19.25 ug/L 96 75-133 <br /> 1,2,3-Trichlorobenzene 20.0 22.31 ug/L 112 47-162 <br /> 1,2,4-Trichlorobenzene 20.0 20.78 ug/L 104 61-130 <br /> 1,1,1-Trichloroethane 20.0 16.85 ug/L 84 79-121 <br /> 1,1,2-Trichloroethane 20.0 19.15 ug/L 96 79-127 <br /> Trichloroethene 20.0 18.69 ug/L 93 74-120 <br /> Trichlorofluoromethane 20.0 15.46 ug/L 77 60-135 <br /> 1,2,3-Trichloropropane 20.0 18.07 ug/L 90 73-120 <br /> 1,2,4-Trimethylbenzene 20.0 19.17 ug/L 96 76-120 <br /> 1,3,5-Trimethylbenzene 20.0 18.97 ug/L 95 79-120 <br /> Vinyl chloride 20.0 16.24 ug/L 81 68-121 <br /> Xylenes,Total 40.0 36.34 ug/L 91 80-123 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 4-Bromofluorobenzene(Surr) 98 74-120 <br /> Dibromofluoromethane(Surr) 88 80-123 <br /> 1,2-Dichloroethane-d4(Surr) 99 72-123 <br /> Eurofins TestAmerica, Sacramento <br /> Page 19 of 30 4/9/2020 <br />