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QC Sample Results <br /> Client: Stantec Consulting Corp. TestAmerica Job ID: 320-24364-1 <br /> Project/Site: 7-Eleven#19976 <br /> Method: 8260B -Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCSD 320-142323/8 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 142323 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> 1,1,1,2-Tetrachloroethane 50.0 50.76 ug/Kg 102 77-134 0 25 <br /> 1,1,1-Trichloroethane 50.0 53.04 ug/Kg 106 67-150 1 43 <br /> 1,1,2,2-Tetrachloroethane 50.0 50.62 ug/Kg 101 71-134 12 31 <br /> 1,1,2-Trichloroethane 50.0 52.27 ug/Kg 105 80-128 2 41 <br /> 1,1-Dichloroethane 50.0 53.35 ug/Kg 107 76-134 2 24 <br /> 1,1-Dichloroethene 50.0 52.04 ug/Kg 104 66-136 2 42 <br /> 1,1-Dichloropropene 50.0 53.69 ug/Kg 107 76-132 2 38 <br /> 1,2,3-Trichlorobenzene 50.0 51.46 ug/Kg 103 54-140 1 42 <br /> 1,2,3-Trichloropropane 50.0 50.16 ug/Kg 100 71-132 6 41 <br /> 1,2,4-Trichlorobenzene 50.0 52.73 ug/Kg 105 48.145 2 39 <br /> 1,2,4-Trimethylbenzene 50.0 54.85 ug/Kg 110 64-137 3 41 <br /> 1,2-Dibromo-3-Chloropropane 50.0 50.88 ug/Kg 102 75-137 8 48 <br /> 1,2-Dibromoethane(EDB) 50.0 48.04 ug/Kg 96 80-124 5 39 <br /> 1,2-Dichlorobenzene 50.0 52.44 ug/Kg 105 68-121 1 28 <br /> 1,2-Dichloroethane 50.0 52.86 ug/Kg 106 66-150 2 36 <br /> 1,2-Dichloropropane 50.0 54.19 ug/Kg 108 80-129 0 38 <br /> 1,3,5-Trimethylbenzene 50.0 55.95 ug/Kg 112 66-135 3 42 <br /> 1,3-Dichlorobenzene 50.0 50.40 ug/Kg 101 64-126 2 41 <br /> 1,3-Dichloropropane 50.0 50.46 ug/Kg 101 80-123 2 39 <br /> 1,4-Dichlorobenzene 50.0 49.48 ug/Kg 99 65-124 2 38 <br /> 2,2-Dichloropropane 50.0 52.92 ug/Kg 106 69-153 0 47 <br /> 2-Chlorotoluene 50.0 52.73 ug/Kg 105 64-127 4 41 <br /> 4-Chlorotoluene 50.0 50.91 ug/Kg 102 67-128 4 40 <br /> Benzene 50.0 53.52 ug/Kg 107 78-128 0 37 <br /> Bromobenzene 50.0 49.15 ug/Kg 98 67-132 4 40 <br /> Bromochloromethane 50.0 50.70 ug/Kg 101 80-127 3 36 <br /> Bromodichloromethane 50.0 53.31 ug/Kg 107 80-137 0 37 <br /> Bromoform 50.0 49.08 ug/Kg 98 80-136 7 45 <br /> Bromomethane 50.0 53.64 ug/Kg 107 48-164 2 38 <br /> Carbon tetrachloride 50.0 52.54 ug/Kg 105 62-154 0 43 <br /> Chlorobenzene 50.0 50.23 ug/Kg 100 74-125 2 38 <br /> Chloroethane 50.0 54.65 ug/Kg 109 54-148 1 34 <br /> Chloroform 50.0 52.60 ug/Kg 105 78-135 2 23 <br /> Chloromethane 50.0 53.29 ug/Kg 107 60-141 0 36 <br /> cis-1,2-Dichloroethene 50.0 51.54 ug/Kg 103 74-131 4 37 <br /> cis-1,3-Dichloropropene 50.0 54.18 ug/Kg 108 80-134 0 39 <br /> Dibromomethane 50.0 50.83 ug/Kg 102 80-129 5 37 <br /> Dichlorodifluoromethane 50.0 51.68 ug/Kg 103 60-130 3 46 <br /> Ethylbenzene = 50.0 51.16 ug/Kg 102 72-125 1 41 <br /> Hexachlorobutadiene J 50.0 50.39 ug/Kg 101 52-140 1 38 <br /> Isopropy Ibenzene W 50.0 51.72 ug/Kg 103 69-137 0 41 <br /> Methyl tert-butyl etherco I-- 50.0 51.61 ug/Kg 103 66-146 5 45 <br /> Methylene Chloride o J W 50.0 50.54 ug/Kg 101 77-125 3 25 <br /> Naphthalene ® < 50.0 52.18 ug/Kg 104 53-140 5 46 <br /> n-Butylbenzene Z 50.0 52.62 ug/Kg 105 68-136 0 37 <br /> rr <br /> N-Propylbenzene v c Q 50.0 53.39 ug/Kg 107 63-128 3 42 <br /> p-Isopropyltoluene o Z W 50.0 54.19 ug/Kg 108 64-137 1 40 <br /> sec-Butyl benzene O 0 50.0 54.10 ug/Kg 108 68-131 3 40 <br /> Z TestAmerica Sacramento <br /> W <br /> Page 11 of 20 12/15/2016 <br />