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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-32093-1 <br /> Matrix Spike/ Method: 8260B/CA_LUFTMS <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-82789 Preparation: 5030B <br /> MS Lab Sample ID: 720-32103-B-21 MS Analysis Batch: 720-82789 Instrument ID: HP4 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 120710012.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 12/07/2010 1438 Final Weight/Volume: 10 mL <br /> Date Prepared: 12/07/2010 1438 <br /> MSD Lab Sample ID: 720-32103-B-21 MSD Analysis Batch: 720-82789 Instrument ID: HP4 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 120710013.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 12/07/2010 1510 Final Weight/Volume: 10 mL <br /> Date Prepared: 12/07/2010 1510 <br /> %Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> EDB 103 105 60-140 1 20 <br /> 1,2,4-Trichlorobenzene 104 104 60-140 0 20 <br /> Surrogate MS% Rec MSD%Rec Acceptance Limits <br /> Toluene-d8(Surr) 98 98 70-130 <br /> 4-Bromofluoro benzene 100 102 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 94 96 67-130 <br /> TestAmerica San Francisco Page 23 of 35 <br />