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' Quality Control Results <br /> Client: Earth Tech, Inc. Job Number: 720-14778-1 <br /> Lab Control Spike/ Method: 8260B <br /> Lab Control Spike Duplicate Recovery Report-Batch: 720-37058 Preparation: 5030B <br /> LCS Lab Sample ID: LCS 720-37058/2 Analysis Batch: 720-37058 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:\saturnws\data\200806\0f <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> ' Date Analyzed: 06/20/2008 0958 Final Weight/Volume: 40 mL <br /> Date Prepared: 06/20/2008 0958 <br /> LCSD Lab Sample ID:LCSD 720-37058/1 Analysis Batch: 720-37058 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:\saturnws\data\200806\06', <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> Date Analyzed: 06/20/2008 1032 Final Weight/Volume: 40 mL <br /> Date Prepared: 06/20/2008 1032 <br /> ' % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qua[ LCSD Qual <br /> Benzene 94 96 80-104 2 M �20 <br /> Chlorobenzene 102 109 89-118 7 20 <br /> 1,1-Dichloroethene 97 99 75- 116 2 20 <br /> Toluene 97 96 80-112 1 20 <br /> ' Trichloroethene 94 94 70-106 0 20 <br /> Surrogate LCS%Rec LCSD%Rec Acceptance Limits <br /> 4-Bromofluorobenzene 103 97 74-131 <br /> 1,2-Dichloroethane-d4(Surr) 104 101 88-119 <br /> Toluene-d8(Surr) 104 99 82- 120 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 38 of 51 <br />