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i <br /> ' Quality Control Results <br /> ' Client: Earth Tech, Inc. Job Number: 720-14778-1 <br /> ' Lab Control Spike/ Method: 82608 <br /> Lab Control Spike Duplicate Recovery Report-Batch: 720-37004 Preparation: 5030B <br /> LCS Lab Sample ID: LCS 720-37004/2 Analysis Batch: 720-37004 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:\saturnws\data\200806\0E <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> Date Analyzed: 06/19/2008 1018 Final Weight/Volume: 40 mL <br /> Date Prepared: 06/19/2008 1018 <br /> ' LCSD Lab Sample ID:LCSD 720-37004/1 Analysis Batch: 720-37004 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:\saturnws\data\200806\061 <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> ' Date Analyzed: 06/19/2008 1052 Final Weight/Volume: 40 mL <br /> Date Prepared: 06/19/2008 1052 <br /> i % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Benzene 89 99 80- 104 11 20 <br /> Chlorobenzene 103 106 89- 118 4 20 <br /> 1,1-Dichloroethene 94 102 75- 116 8 20 <br /> Toluene 91 101 80-112 11 20 <br /> i Trichloroethene 89 96 70-106 7 20 <br /> Surrogate LCS% Rec LCSD%Rec Acceptance Limits <br /> 4-Bromofluorobenzene 96 96 74-131 <br /> ' 1,2-Dichloroethane-d4(Surr) 102 106 88-119 <br /> Toluene-d8(Surr) 100 100 82-120 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> ' TestAmerica San Francisco Page 34 of 51 <br />