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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-24852-1 <br /> Matrix Spike/ Method: 8260B/CA_LUFTMS <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-63606 Preparation: 5030B <br /> MS Lab Sample ID: 720-24930-A-3 MS Analysis Batch: 720-63606 Instrument ID: Chemtation 3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 12290935.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 12/30/2009 0340 Final Weight/Volume: 10 mL <br /> Date Prepared: 12/30/2009 0340 <br /> MSD Lab Sample ID: 720-24930-A-3 MSD Analysis Batch: 720-63606 Instrument ID: Chemtation 3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 12290936.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 12/30/2009 0414 Final Weight/Volume: 10 mL <br /> Date Prepared: 12/30/2009 0414 <br /> %Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 109 110 60-140 1 20 <br /> 1,1-Dichloroethane 113 115 60-140 2 20 <br /> Dichlorodifluoromethane 95 96 38-140 2 20 <br /> Vinyl chloride 120 126 58-140 4 20 <br /> Chloroethane 130 130 51 -140 0 20 <br /> Trichlorofluoromethane 103 105 60-140 3 20 <br /> Methylene Chloride 95 98 40-140 2 20 <br /> trans-1,2-Dichloroethene 104 103 60-140 1 20 <br /> cis-1,2-Dichloroethene 66 63 60-140 0 20 4 4 <br /> Chloroform 114 117 60-140 3 20 <br /> 1,1,1-Trichloroethane 115 119 60-140 3 20 <br /> Carbon tetrachloride 118 121 60-140 3 20 <br /> 1,2-Dichloroethane 113 115 60-140 2 20 <br /> Trichloroethene 20 12 60-140 1 20 4 4 <br /> 1,2-Dichloropropane 115 115 60-140 0 20 <br /> Dichlorobromomethane 125 130 60-140 3 20 <br /> trans-1,3-Dichloropropene 114 118 60-140 3 20 <br /> cis-1,3-Dichloropropene 117 122 60-140 4 20 <br /> 1,1,2-Trichloroethane 111 113 60-140 2 20 <br /> Tetrachloroethene 111 112 60-140 1 20 <br /> Chlorodibromomethane 117 123 60-140 5 20 <br /> Chlorobenzene 108 110 60-140 2 20 <br /> Bromoform 97 99 56-140 2 20 <br /> 1,1,2,2-Tetrachloroethane 105 106 60-140 1 20 <br /> 1,3-Dichlorobenzene 105 108 60-140 2 20 <br /> 1,4-Dichlorobenzene 95 97 60-140 2 20 <br /> 1,2-Dichlorobenzene 105 107 60-140 2 20 <br /> Chloromethane 105 107 52-140 2 20 <br /> Bromomethane 111 115 23-140 4 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 16 Of 26 <br />