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»umiLte T <br /> .services <br /> ' DUPLICATE CONTROL SAMPLE REPORT <br /> Volatile organics by GC/MS <br /> Project: 095143 <br /> ' Category: 8260-A 8260, Aqueous <br /> Testcode: 8260-TCL-LL-A Method: 8260 <br /> ' Matrix: AQUEOUS Concentration Units. ugg/L <br /> QC Lot: 01 OCT 97-3A Analyzed Date: 01 OCT 97 Time: 13:59 <br /> ---Concentration-------- Accuracy Precision <br /> Analyte Spiked -------Measured----- M { <br /> RPD} <br /> DCS1 DCS2 DCS1 DCS2 Limits 0 S Limit <br /> 1,1-Dichloroethene 10.0 10.7 10.6 107 106 75-113 0.93 20 <br />' Benzene 10.0 9.93 9.73 99 97 78-116 2.0 20 <br /> Trichloroethene 10.0 9.76 9.94 98 99 70-110 1.8 20 <br /> Toluene 10.0 9.73 9.46 97 95 78-126 2.7 20 <br /> Chlorobenzene 10.0 9.69 9.73 97 97 81-115 0.42 20 <br /> ---Concentration------ <br /> Surrogate Spiked -------Measured----- Accuracy(%) <br />' OCS1 DCS2 DCS1 DCS2 Limits <br /> 1,2-Dichloroethane-d4 10.0 9.50 9.13 95 91 76-114 <br /> Toluene-d$ 10.0 9.96 9.50 100 95 88-110 <br /> 4-Bromofluorobenzene 10.0 9.90 9.67 99 97 86-115 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br />