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Quality Control Results <br /> Client: Shaw Environmental & Infrastructure, Inc Job Number: 720-21697-1 <br /> Matrix Spike/ Method: 82608 <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-55224 Preparation: 5030B <br /> MS Lab Sample ID: 720-21697-13 Analysis Batch: 720-55224 Instrument ID: Chenstation 3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 08050924.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 08/05/2009 2041 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/05/2009 2041 <br /> MSD Lab Sample ID: 720-21697-13 Analysis Batch: 720-55224 Instrument ID: Chenstation 3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 08050925.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 08/05/2009 2113 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/05/2009 2113 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> Dichlorodifluoromethane 78 79 38-140 1 20 <br /> 1,1-Dichloroethane 101 102 60-140 1 20 <br /> 1,2-Dichloroethane 101 101 60-140 1 20 <br /> 1,1-Dichloroethene 104 105 60-140 2 20 <br /> cis-1,2-Dichloroethene 104 105 60-140 1 20 <br /> trans-1,2-Dichloroethene 97 100 60-140 3 20 <br /> 1,2-Dichloropropane 103 105 60-140 2 20 <br /> cis-1,3-Dichloropropene 114 115 60-140 1 20 <br /> trans-1,3-Dichloropropene 109 108 60-140 1 20 <br /> Ethylbenzene 102 103 60-140 2 20 <br /> Hexachlorobutadiene 96 100 60-140 4 20 <br /> 2-Hexanone 103 105 60-140 1 20 <br /> Isopropylbenzene 88 89 60-140 2 20 <br /> 4-Isopropyltoluene 98 100 60-140 2 20 <br /> Methylene Chloride 96 96 40-140 0 20 <br /> 4-Methyl-2-pentanone(MIBK) 102 105 60-140 2 20 <br /> Naphthalene 101 107 56-140 6 20 <br /> N-Propylbenzene 95 97 60-140 2 20 <br /> Styrene 109 109 60-140 0 20 <br /> 1,1,1,2-Tetrachloroethane 120 123 60-140 2 20 <br /> 1,1,2,2-Tetrachloroethane 99 102 60-140 3 20 <br /> Tetrachloroethene 87 84 60-140 0 20 4 4 <br /> Toluene 96 98 60-140 2 20 <br /> 1,2,3-Trichlorobenzene 104 109 60-140 5 20 <br /> 1,2,4-Trichlorobenzene 99 103 60- 140 3 20 <br /> 1,1,1-Trichloroethane 104 105 60-140 1 20 <br /> 1,1,2-Trichloroethane 108 109 60-140 0 20 <br /> Trichloroethene 100 103 60-140 3 20 <br /> Trichlorofluoromethane 95 96 60-140 2 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 47 of 63 08/17/2009 <br />