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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: LCS 320-142323/7 Client Sample ID: Lab Control Sample <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 142323 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> 4-Chlorotoluene 50.0 52.86 ug/Kg 106 67-128 <br /> Benzene 50.0 53.69 ug/Kg 107 78-128 <br /> Bromobenzene 50.0 51.29 ug/Kg 103 67-132 <br /> Bromochloromethane 50.0 52.27 ug/Kg 105 80-127 <br /> Bromodichloromethane 50.0 53.17 ug/Kg 106 80-137 <br /> Bromoform 50.0 52.40 ug/Kg 105 80.136 <br /> Bromomethane 50.0 52.61 ug/Kg 105 48-164 <br /> Carbon tetrachloride 50.0 52.77 ug/Kg 106 62-154 <br /> Chlorobenzene 50.0 51.06 ug/Kg 102 74-125 <br /> Chloroethane 50.0 53.97 ug/Kg 108 54-148 <br /> Chloroform 50.0 53.93 ug/Kg 108 78-135 <br /> Chloromethane 50.0 53.16 ug/Kg 106 60-141 <br /> cis-1,2-Dichloroethene 50.0 53.59 ug/Kg 107 74-131 <br /> cis-1,3-Dichloropropene 50.0 53.99 ug/Kg 108 80-134 <br /> Dibromomethane 50.0 53.49 ug/Kg 107 80-129 <br /> Dichlorodifluoromethane 50.0 53.43 ug/Kg 107 60-130 <br /> Ethylbenzene 50.0 51.46 ug/Kg 103 72-125 <br /> Hexachlorobutadiene 50.0 49.76 ug/Kg 100 52-140 <br /> ]sop ropylbenzene 50.0 51.89 ug/Kg 104 69-137 <br /> Methyl tert-butyl ether 50.0 54.04 ug/Kg 108 66-146 <br /> Methylene Chloride 50.0 51.99 ug/Kg 104 77-125 <br /> Naphthalene 50.0 54.72 ug/Kg 109 53-140 <br /> n-Butylbenzene 50.0 52.59 ug/Kg 105 68-136 <br /> N-Propylbenzene 50.0 55.07 ug/Kg 110 63-128 <br /> p-Isopropyltoluene 50.0 54.79 ug/Kg 110 64-137 <br /> sec-Butylbenzene 50.0 55.59 ug/Kg 111 68-131 <br /> Styrene 50.0 50.96 ug/Kg 102 79-128 <br /> tert-Butyl alcohol(TBA) 500 515.8 ug/Kg 103 46-181 <br /> tert-Butyl benzene 50.0 56.70 ug/Kg 113 67-131 <br /> Tetrachloroethene 50.0 50.50 ug/Kg 101 65-135 <br /> Toluene 50.0 53.51 ug/Kg 107 80-124 <br /> trans-1,2-Dichloroethene 50.0 52.83 ug/Kg 106 67-135 <br /> trans-1,3-Dichloropropene 50.0 55.58 ug/Kg 111 80-148 <br /> Trichloroethene 50.0 53.09 ug/Kg 106 80-126 <br /> Trichlorofluoromethane 50.0 52.29 ug/Kg 105 43-158 <br /> Vinyl chloride 50.0 55.68 ug/Kg 111 67-127 <br /> Xylenes,Total 100 104.6 ug/Kg 105 75-122 <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> 1,2-Dichloroethane-d4(Surr) 106 32-156 <br /> 4-Bromofluorobenzene(Surr) 104 63-143 <br /> Dibromofluoromethane(Surr) 109Ec 1) ,"000.0 <br /> Toluene-d8(Surr) 114 63-138 R <br /> 55-129 <br /> VIRCNM -N-v <br /> EN0ePPARTMF_NT <br /> TestAmerica Sacramento <br /> Page 10 of 20 12/15/2016 <br />