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r <br /> ' Quality Control Results <br /> ' Client: Earth Tech, Inc. Job Number: 720-14778-1 <br /> Matrix Spike/ Method: 8260B <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-37004 Preparation: 50308 <br /> MS Lab Sample ID: 720-14765-B-17 MS Analysis Batch: 720-37004 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:\saturnws\data\200806\( <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> ' Date Analyzed: 06/19/2008 1519 Final Weight/Volume: 40 mL <br /> Date Prepared: 06/19/2008 1519 <br /> ' MSD Lab Sample ID: 720-14765-C-17 MSD Analysis Batch: 720-37004 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:\saturnws\data\200806\OE <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 06/19/2008 1552 Final Weight/Volume: 40 mL <br /> Date Prepared: 06/19/2008 1552 <br /> ' % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> Benzene ._�...—. _.._.._____. 94._.. —94 78-108 1 �..~. 20 <br /> Chlorobenzene 107 106 88-121 1 20 <br /> 1,1-Dichloroethene 101 104 74-122 3 20 <br /> Toluene 94 100 77-116 6 20 <br /> Trichloroethene 94 98 61 -123 5 20 <br /> Surrogate MS%o Rec _MSD%Rec Acceptance Limits <br /> 4-Bromofluorobenzene 97 98 74-131 <br /> 1,2-Dichloroethane-d4(Surr) 103 110 88-119 <br /> Toluene-d8(Surr) 98 101 82-120 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> r <br /> 1 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 35 of 51 <br />