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�I <br /> I) <br /> Quality Control Results <br /> { iI <br /> Client: Secor International, Inc. Job Number: 720-1251-1 <br /> ii <br /> Matrix Spike/ Method: 8260B <br /> Matrix Spike Duplicate Recovery Report- Batch: 7204278 Preparation: 5030B <br /> MS Lab Sample ID: 720-1251-1 Analysis Batch: 720-4278 Instrument ID: Saturn 3900B <br /> Client Matrix: Water Prep Batch: NIA Lab File ID: c:lsaturnwsldata120060111 <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 01/10/2006 1058 Final WeightfVolume: 10 mL <br /> Date Prepared: 01 /10/2006 1058 <br /> l <br /> MSD Lab Sample ID: 720-1251-1 Analysis Batch: 720-4278 Instrument 1D: Saturn 3900B <br /> Client Matrix: Water Prep Batch: NIA Lab File ID: c:lsaturnwsldata120060110' <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 01/10/2006 1124 Final Weight/Volume: 10 mL <br /> Date Prepared: 01/10/2006 1124 <br /> I� <br /> l <br /> %Rec. <br /> Analyte jl MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> .rt..� .97 .�..n..,.93.. . _._-69- 129 4 .�.�.20�e.��.�.......� ��.._. <br /> MTBE 99 95 65- 165 4 20 <br /> Toluene 92 90 70- 130 3 20 <br /> Surrogate MS%Rec MSD% Rec Acceptance Limits <br /> Toluene-d8 85 84 77- 121 <br /> 1,2-Dichloroethane-d4 88 90 73- 130 <br /> I� <br /> I <br /> i u <br /> I <br /> I <br /> I� <br /> I� <br />` F Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> 5TL San Francisco Page 10 of 12 <br />