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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-31232-1 <br /> Matrix Spike/ Method: 8260B/CA_LUFTMS <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-80578 Preparation: 5030B <br /> MS Lab Sample ID: 720-31232-21 Analysis Batch: 720-80578 Instrument ID: CHMSV2 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 10261007.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 10/26/2010 1133 Final Weight/Volume: 10 mL <br /> Date Prepared: 10/26/2010 1133 <br /> MSD Lab Sample ID: 720-31232-21 Analysis Batch: 720-80578 Instrument ID: CHMSV2 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 10261008.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 10/26/2010 1204 Final Weight/Volume: 10 mL <br /> Date Prepared: 10/26/2010 1204 <br /> %Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> EDB 94 96 60-140 2 20 <br /> 1,2,4-Trichlorobenzene 96 96 60-140 0 20 <br /> Surrogate MS% Rec MSD%Rec Acceptance Limits <br /> Toluene-d8(Surr) 89 90 70-130 <br /> 4-Bromofluoro benzene 98 97 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 110 112 67-130 <br /> TestAmerica San Francisco Page 72 of 77 <br />