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Quality Control Results <br /> Client: Shaw Environmental & Infrastructure, Inc Job Number: 720-21697-1 <br /> Matrix Spike/ Method: 8260B <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-55354 Preparation: 5030B <br /> MS Lab Sample ID: 720-21697-1 Analysis Batch: 720-55355 Instrument ID: Chenstation 3 <br /> Client Matrix: Solid Prep Batch: 720-55354 Lab File ID: 08060911.D <br /> Dilution: 1.0 Initial Weight/Volume: 5.01 g <br /> Date Analyzed: 08/06/2009 1515 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/06/2009 0718 <br /> MSD Lab Sample ID: 720-21697-1 Analysis Batch: 720-55355 Instrument ID: Chenstation 3 <br /> Client Matrix: Solid Prep Batch: 720-55354 Lab File ID: 08060912.D <br /> Dilution: 1.0 Initial Weight/Volume: 4.99 g <br /> Date Analyzed: 08/06/2009 1547 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/06/2009 0718 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,2 3 Trichloropropane 97 119 70-130 21 20 F <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 102 109 70-130 7 20 <br /> 1,2,4-Trimethylbenzene 101 106 70-130 5 20 <br /> 1,3,5-Trimethylbenzene 99 105 70-130 6 20 <br /> Vinyl acetate 79 97 70-130 21 20 F <br /> Vinyl chloride 94 105 70- 130 11 20 <br /> 2,2-Dichloropropane 104 111 70- 130 7 20 <br /> Surrogate MS%Rec MSD%Rec Acceptance Limits <br /> 4-Bromofluorobenzene 98 99 52-130 <br /> 1,2-Dichloroethane-d4(Surr) 95 99 67-130 <br /> Toluene-d8(Surr) 99 98 58-130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 56 of 63 08/17/2009 <br />