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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-30919-1 <br /> Matrix Spike/ Method: 8260B/CA_LUFTMS <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-79165 Preparation: 5030B <br /> MS Lab Sample ID: 720-30797-A-2 MS Analysis Batch: 720-79165 Instrument ID: HP9 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 10011039.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 10/02/2010 0452 Final Weight/Volume: 10 mL <br /> Date Prepared: 10/02/2010 0452 <br /> MSD Lab Sample ID: 720-30797-A-2 MSD Analysis Batch: 720-79165 Instrument ID: HP9 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 10011040.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 10/02/2010 0524 Final Weight/Volume: 10 mL <br /> Date Prepared: 10/02/2010 0524 <br /> %Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> EDB 100 104 60-140 4 20 <br /> 1,2,4-Trichlorobenzene 85 86 60-140 1 20 <br /> Surrogate MS% Rec MSD%Rec Acceptance Limits <br /> Toluene-d8(Surr) 94 93 70-130 <br /> 4-Bromofluoro benzene 96 98 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 98 101 67-130 <br /> TestAmerica San Francisco Page 18 of 20 <br />