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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: 720-55128 Preparation: 5030B <br /> MS Lab Sample ID: 720-21697-14 Analysis Batch: 720-55128 Instrument ID: Agilent 5973 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 08050912.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 08/05/2009 1651 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/05/2009 1651 <br /> MSD Lab Sample ID: 720-21697-14 Analysis Batch: 720-55128 Instrument ID: Agilent 5973 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 08050913.D <br /> Dilution: 1.0 Initial Weight/Volume: 10 mL <br /> Date Analyzed: 08/05/2009 1722 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/05/2009 1722 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qua[ MSD Qual <br /> _W .- . _ -'-- --_._n--� ­__'9_8_______60- <br /> __'-_�_ s___,....P1_4_O­'__"'_9______ <br /> _4_O_.,�.a._ ,._-�__ _,na. <br /> 1,2,3-Trichloropropane 107 98 60-140 9 20 <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 87 88 60-140 2 20 <br /> 1,2,4-Trim ethyl benzene 102 103 60- 140 1 20 <br /> 1,3,5-Trimethylbenzene 100 102 60- 140 2 20 <br /> Vinyl acetate 98 81 40- 140 19 20 <br /> Vinyl chloride 108 116 58- 140 8 20 <br /> 2,2-Dichloropropane 93 95 60- 140 2 20 <br /> Surrogate MS% Rec MSD% Rec Acceptance Limits <br /> 4-Bromofluorobenzene 105 102 67- 130 M <br /> 1,2-Dichloroethane-d4(Surr) 108 103 67- 130 <br /> Toluene-d8(Surr) 95 94 70- 130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 40 of 63 08/17/2009 <br />