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�d <br /> 1 Quality Control Results <br /> -'Client: San Joaquin Company Inc Job Number: 720-2949-1 <br /> Laboratory Control! Method: 8260B <br /> Laboratory Control Duplicate Recovery Report-Batch: 720-7428 Preparation: 5030B <br /> L <br /> LCS Lab Sample 10:LCS 720-7428112 Analysis Batch: 720-7428 Instrument ID: Varian 3900A <br /> Client Matrix: Water Prep Batch: NIA Lab Fite ID: c:lsatumwsldata1200604\D <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 04/06/2006 1305 Final Weight/Volume: 10 mL <br /> 111 pate Prepared: 04/06/2006 1305 <br /> LCSD Lab Sample ID:LCSD 720-7428119 Analysis Batch: 720-7428 Instrument ID: Varian.3900A <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:Isaturnwsldata1200604104t <br /> Dilution: 1.0 Units:ug/L Initial Weight/Volume: 10 mL <br /> t Date Analyzed: 04/06/2006 1327 Final Weight/Volume: 10 mL <br /> Date Prepared: 04/06/2006 1327 <br /> %Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qua! LCSD Qual <br /> Benzene 104 105 69-129 2 25 <br /> MTBE 105 108 65-165 2 25 <br /> --,Toluene <br /> 106 106 70- 130 0 25 <br /> Surrogate LCS%Rec LCSD%Rec Acceptance Limits <br /> Toiuene-d8 101 101 .77- 121 <br /> 1,2-Dichloroethane-d4 1.18 119 73- 130 <br /> �i <br /> } <br /> t' <br /> I <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> STL San Francisco Page 43 of 54 <br />