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QC Sample Results <br /> Client: Stantec Consulting Corp. Job ID: 320-59971-1 <br /> Project/Site: 7-11 No 41531 <br /> Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCSD 320-369958/9 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 369958 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> Benzene 0.0500 0.04588 mg/Kg 92 78-128 6 37 <br /> Bromobenzene 0.0500 0.04653 mg/Kg 93 67-132 3 40 <br /> Bromochloromethane 0.0500 0.04987 mg/Kg 100 80-127 1 36 <br /> Bromodichloromethane 0.0500 0.04931 mg/Kg 99 80-137 1 37 <br /> Bromoform 0.0500 0.05044 mg/Kg 101 80-136 3 45 <br /> Bromomethane 0.0500 0.05232 mg/Kg 105 48-164 4 38 <br /> Carbon tetrachloride 0.0500 0.04494 mg/Kg 90 62-154 4 43 <br /> Chlorobenzene 0.0500 0.04581 mg/Kg 92 74-125 5 38 <br /> Chloroethane 0.0500 0.04775 mg/Kg 95 54-148 7 34 <br /> Chloroform 0.0500 0.04756 mg/Kg 95 78-135 4 23 <br /> Chloromethane 0.0500 0.04651 mg/Kg 93 60-141 5 36 <br /> 2-Chlorotoluene 0.0500 0.04424 mg/Kg 88 64-127 5 41 <br /> 4-Chlorotoluene 0.0500 0.04422 mg/Kg 88 67-128 5 40 <br /> cis-1,2-Dichloroethene 0.0500 0.04673 mg/Kg 93 74-131 4 37 <br /> cis-1,3-Dichloropropene 0.0500 0.04668 mg/Kg 93 80-134 6 39 <br /> Dibromochloromethane 0.0500 0.05004 mg/Kg 100 80-133 2 24 <br /> 1,2-Dibromo-3-Chloropropane 0.0500 0.05056 mg/Kg 101 75-137 1 48 <br /> 1,2-Dibromoethane(EDB) 0.0500 0.05030 mg/Kg 101 80-124 3 39 <br /> Dibromomethane 0.0500 0.04997 mg/Kg 100 80-129 1 37 <br /> 1,2-Dichlorobenzene 0.0500 0.04597 mg/Kg 92 68-121 4 28 <br /> 1,3-Dichlorobenzene 0.0500 0.04483 mg/Kg 90 64-126 4 41 <br /> 1,4-Dichlorobenzene 0.0500 0.04461 mg/Kg 89 65-124 5 38 <br /> Dichlorodifluoromethane 0.0500 0.04941 mg/Kg 99 60-130 6 46 <br /> 1,1-Dichloroethane 0.0500 0.04711 mg/Kg 94 76-134 3 24 <br /> 1,2-Dichloroethane 0.0500 0.05211 mg/Kg 104 66-150 3 36 <br /> 1,1-Dichloroethene 0.0500 0.04583 mg/Kg 92 66-136 3 42 <br /> 1,2-Dichloropropane 0.0500 0.04630 mg/Kg 93 80-129 4 38 <br /> 1,3-Dichloropropane 0.0500 0.05035 mg/Kg 101 80-123 2 39 <br /> 2,2-Dichloropropane 0.0500 0.04569 mg/Kg 91 69-153 4 47 <br /> 1,1-Dichloropropene 0.0500 0.04451 mg/Kg 89 76-132 5 38 <br /> Ethylbenzene 0.0500 0.04605 mg/Kg 92 72-125 4 41 <br /> Hexachlorobutadiene 0.0500 0.04012 mg/Kg 80 52-140 9 38 <br /> Isopropylbenzene 0.0500 0.04496 mg/Kg 90 69-137 5 41 <br /> Methylene Chloride 0.0500 0.04787 mg/Kg 96 77-125 2 25 <br /> Methyl tert butyl ether 0.0500 0.04947 mg/Kg 99 66-146 4 45 <br /> Naphthalene 0.0500 0.05038 mg/Kg 101 53-140 2 46 <br /> n-Butylbenzene 0.0500 0.04091 mg/Kg 82 68-136 9 37 <br /> N-Propylbenzene 0.0500 0.04323 mg/Kg 86 63-128 4 42 <br /> p-Isopropyltoluene 0.0500 0.04243 mg/Kg 85 64-137 7 40 <br /> sec-Butylbenzene 0.0500 0.04289 mg/Kg 86 68-131 6 40 <br /> Styrene 0.0500 0.04619 mg/Kg 92 79-128 6 40 <br /> tert-Butyl alcohol(TBA) 0.500 0.4572 mg/Kg 91 46-181 4 68 <br /> tert-Butylbenzene 0.0500 0.04645 mg/Kg 93 67-131 5 42 <br /> 1,1,1,2-Tetrachloroethane 0.0500 0.04803 mg/Kg 96 77-134 3 25 <br /> 1,1,2,2-Tetrachloroethane 0.0500 0.05008 mg/Kg 100 71-134 2 31 <br /> Tetrachloroethene 0.0500 0.04337 mg/Kg 87 65-135 6 39 <br /> Toluene 0.0500 0.04583 mg/Kg 92 80-124 3 39 <br /> trans-1,2-Dichloroethene 0.0500 0.04598 mg/Kg 92 67-135 4 37 <br /> Eurofins TestAmerica, Sacramento <br /> Page 20 of 33 4/9/2020 <br />