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QC Sample Results <br /> Client: GHD Services Inc. TestAmerica Job ID: 720-91968-1 <br /> Project/Site: UPRR-Tracy Substation <br /> Method: 8260B -Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: LCSD 720-262202/6 Client Sample ID: Lab Control Sample Dup <br /> Matrix: Solid Prep Type: Total/NA <br /> Analysis Batch: 262202 <br /> Spike LCSD LCSD %Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> 2-Chlorotoluene 50.0 59.3 ug/Kg 119 70-138 0 20 <br /> 4-Chlorotoluene 50.0 59.0 ug/Kg 118 70-136 1 20 <br /> Chlorodibromomethane 50.0 49.3 ug/Kg 99 70-146 0 20 <br /> 1,2-Dichlorobenzene 50.0 52.4 ug/Kg 105 70-130 1 20 <br /> 1,3-Dichlorobenzene 50.0 51.4 ug/Kg 103 70-131 0 20 <br /> 1,4-Dichlorobenzene 50.0 51.0 ug/Kg 102 70-130 0 20 <br /> 1,3-Dichloropropane 50.0 53.6 ug/Kg 107 70-140 0 20 <br /> 1,1-Dichloropropene 50.0 55.3 ug/Kg 111 70-130 1 20 <br /> 1,2-Dibromo-3-Chloropropane 50.0 54.1 ug/Kg 108 60-145 0 20 <br /> Ethylene Dibromide 50.0 50.2 ug/Kg 100 70-140 1 20 <br /> Dibromomethane 50.0 47.5 ug/Kg 95 70-139 0 20 <br /> Dichlorodifluoromethane 50.0 57.6 ug/Kg 115 37-158 2 20 <br /> 1,1-Dichloroethane 50.0 57.6 ug/Kg 115 70-130 1 20 <br /> 1,2-Dichloroethane 50.0 49.4 ug/Kg 99 70-130 0 20 <br /> 1,1-Dichloroethene 50.0 53.0 ug/Kg 106 74-122 1 20 <br /> cis-1,2-Dichloroethene 50.0 53.7 ug/Kg 107 70-138 1 20 <br /> trans-1,2-Dichloroethene 50.0 52.9 ug/Kg 106 67-130 1 20 <br /> 1,2-Dichloropropane 50.0 60.5 ug/Kg 121 73-127 1 20 <br /> cis-1,3-Dichloropropene 50.0 58.4 ug/Kg 117 68-147 1 20 <br /> trans-1,3-Dichloropropene 50.0 54.9 ug/Kg 110 70-155 0 20 <br /> Ethylbenzene 50.0 53.0 ug/Kg 106 80-137 0 20 <br /> Hexachlorobutadiene 50.0 56.9 ug/Kg 114 70-132 1 20 <br /> 2-Hexanone 250 261 ug/Kg 105 62-158 1 20 <br /> Isopropylbenzene 50.0 52.9 ug/Kg 106 70-130 1 20 <br /> 4-Isopropyltoluene 50.0 57.4 ug/Kg 115 70-133 1 20 <br /> Methylene Chloride 50.0 52.8 ug/Kg 106 70-134 1 20 <br /> 4-Methyl-2-pentanone(MIBK) 250 259 ug/Kg 104 60-160 1 20 <br /> Naphthalene 50.0 56.4 ug/Kg 113 60-147 1 20 <br /> N-Propylbenzene 50.0 59.9 ug/Kg 120 70-130 1 20 <br /> Styrene 50.0 49.1 ug/Kg 98 70-130 1 20 <br /> 1,1,1,2-Tetrachloroethane 50.0 51.1 ug/Kg 102 70-130 0 20 <br /> 1,1,2,2-Tetrachloroethane 50.0 59.8 ug/Kg 120 70-146 2 20 <br /> Tetra chloroethene 50.0 48.0 ug/Kg 96 70-132 1 20 <br /> Toluene 50.0 53.6 ug/Kg 107 75-120 0 20 <br /> 1,2,3-Tri ch lorobenzene 50.0 55.5 ug/Kg 111 60-140 1 20 <br /> 1,2,4-Tri ch lorobenzene 50.0 55.4 ug/Kg 111 60.140 0 20 <br /> 1,1,1-Trichloroethane 50.0 51.2 ug/Kg 102 70-130 1 20 <br /> 1,1,2-Trichloroethane 50.0 55.4 ug/Kg 111 70-130 0 20 <br /> Trichloroethene 50.0 48.6 ug/Kg 97 70-133 1 20 <br /> Trichlorofluoromethane 50.0 52.5 ug/Kg 105 60-140 0 20 <br /> 1,2,3-Trichloropropane 50.0 55.8 ug/Kg 112 70-146 1 20 <br /> 1,1,2-Trichloro-1,2,2-trifluoroetha 50.0 49.8 ug/Kg 100 60-140 1 20 <br /> ne <br /> 1,2,4-Trimethylbenzene 50.0 56.9 ug/Kg 114 70-130 1 20 <br /> 1,3,5-Trimethylbenzene 50.0 58.1 ug/Kg 116 70-131 1 20 <br /> Vinyl acetate 50.0 60.5 ug/Kg 121 38-176 5 20 <br /> Vinyl chloride 50.0 51.5 ug/Kg 103 58-125 1 20 <br /> m-Xylene&p-Xylene 50.0 53.1 ug/Kg 106 70-146 0 20 <br /> TestAmerica Pleasanton <br /> Page 14 of 30 3/20/2019 <br />