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Quality Control Results <br /> 7—,tient: San Joaquin Company Inc Job Dumber: 720-2949-1 <br /> �! p Y <br /> E; <br /> Laboratory Control/ Method: 8260B <br /> I' Laboratory Control Duplicate Recovery Report-Batch: 720-7538 Preparation: 50308 <br />{ <br /> LCS Lab Sample ID:LCS 720-753813 Analysis Batch: 720-7538 Instrument ID: Saturn 2100 <br /> . p Y <br /> Client Matrix: Water Prep Batch: NIA Lab File ID: c:Isaturnwsldata1200604V0 <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 04/11/2006 0921 Final WeightNolume: 10 mL <br /> Date Prepared: 04/11/2006 0921 <br /> LCSD Lab Sample ID:LCSD 720-753812 Analysis Batch: 720-7538 Instrument ID: Saturn 2100 <br /> Client Matrix: Water Prep Batch: NIA Lab File ID: c:lsaturnwsldata12006041041 <br /> Dilution: 1.0 Units:ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 04/11/2006 0947 Final WeightNalume: 10 mL <br /> Date Prepared: 04/11/2006 0947 <br /> C <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> I Benzene 86 94 - 69- 129 - 10 YA 25 <br /> MTBE 119 106 65- 165 12 25 <br /> Toluene 106 115 70- 130 8 25 <br /> 'Surrogate LCS%Rec LCSD% Rec Acceptance Limits <br /> Toluene-d8 102 107 77- 121 <br /> 1,2-Dichloroethane-d4 124 106 73- 130 <br /> 1 <br /> i <br /> I <br /> 1 14 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> 1. STL San Francisco Page 45 of 54 <br />