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Quality Control Results <br /> Client: Shaw Environmental & Infrastructure, Inc Job Number: 720-21697-1 <br /> Lab Control Sample/ Method: 82608 <br /> Lab Control Sample Duplicate Recovery Report-Batch: 720-55354 Preparation: 5030B <br /> LCS Lab Sample ID: LCS 720-55354/2-A Analysis Batch: 720-55355 Instrument ID: Chenstation 3 <br /> Client Matrix: Solid Prep Batch: 720-55354 Lab File ID: 08060904.D <br /> Dilution: 1.0 Units: ug/Kg Initial Weight/Volume: 5 g <br /> Date Analyzed: 08/06/2009 1107 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/06/2009 0718 <br /> LCSD Lab Sample ID:LCSD 720-55354/3-A Analysis Batch: 720-55355 Instrument ID: Chenstation 3 <br /> Client Matrix: Solid Prep Batch: 720-55354 Lab File ID: 08060905.D <br /> Dilution: 1.0 Units: ug/Kg Initial Weight/Volume: 5 g <br /> Date Analyzed: 08/06/2009 1139 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/06/2009 0718 <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> 1,1-Dichloroethene 104 105 64-129 0 20 <br /> cis-1,2-Dichloroethene 99 99 68- 131 0 20 <br /> trans-1,2-Dichloroethene 98 97 70- 130 1 20 <br /> 1,2-Dichloropropane 98 96 65- 133 2 20 <br /> cis-1,3-Dichloropropene 109 108 46-139 1 20 <br /> trans-1,3-Dichloropropene 104 102 55-131 2 20 <br /> Ethylbenzene 101 101 65-130 0 20 <br /> Hexachlorobutadiene 95 94 58-132 1 20 <br /> 2-Hexanone 115 106 44-158 9 20 <br /> Isopropylbenzene 87 87 70-130 0 20 <br /> 4-Isopropyltoluene 99 99 69-134 1 20 <br /> Methylene Chloride 92 90 63- 129 2 20 <br /> 4-Methyl-2-pentanone(MIBK) 112 103 51 - 140 8 20 <br /> Naphthalene 101 96 45-146 5 20 <br /> N-Propylbenzene 97 98 71 - 130 1 20 <br /> Styrene 102 102 58- 135 0 20 <br /> 1,1,1,2-Tetrachloroethane 113 113 64- 133 0 20 <br /> 1,1,2,2-Tetrachloroethane 106 100 75- 131 6 20 <br /> Tetrachlorpethene 101 98 67- 128 2 20 <br /> Toluene 97 95 72- 120 1 20 <br /> 1,2,3-Trichlorobenzene 98 94 58- 138 4 20 <br /> 1,2,4-Trichlorobenzene 94 91 49- 144 3 20 <br /> 1,1,1-Trichloroethane 105 104 57- 133 1 20 <br /> 1,1,2-Trichloroethane 102 100 68- 132 3 20 <br /> Trichloroethene 100 99 66-125 0 20 <br /> Trichlorofluoromethane 98 97 61 -127 0 20 <br /> 1,2,3-Trichloropropane 108 103 62-156 5 20 <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 101 102 52-126 1 20 <br /> 1,2,4-Trimethylbenzene 102 102 64-140 1 20 <br /> 1,3,5-Trimethylbenzene 100 100 67-134 0 20 <br /> Vinyl acetate 97 86 52-170 12 20 <br /> Vinyl chloride 96 97 62-120 1 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 52 of 63 08/17/2009 <br />