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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-29703-1 <br /> Matrix Spike/ Method: 8260B/CA_LUFTMS <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-75958 Preparation: 5030B <br /> MS Lab Sample ID: 720-29725-A-4 MS Analysis Batch: 720-75958 Instrument ID: HP4 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 080710016.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 08/07/2010 1700 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/07/2010 1700 <br /> MSD Lab Sample ID: 720-29725-A-4 MSD Analysis Batch: 720-75958 Instrument ID: HP4 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 080710017.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 08/07/2010 1732 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/07/2010 1732 <br /> %Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> EDB 107 102 60-140 4 20 <br /> 1,2,4-Trichlorobenzene 95 97 60-140 3 20 <br /> Surrogate MS% Rec MSD%Rec Acceptance Limits <br /> Toluene-d8(Surr) 94 87 70-130 <br /> 4-Bromofluoro benzene 109 99 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 107 98 67-130 <br /> TestAmerica San Francisco Page 45 of 73 <br />