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�i�uanterra <br /> Enviunnmenral <br /> Services <br /> ioDUPLICATE CONTROL SAMPLE REPORT <br /> latile Organics by GC/MS <br /> oject: 096392 <br /> Category: 8260-A 8260, Aqueous <br /> Testcode: 8260-TCL-LL-A Method: 8260 <br /> Matrix: AQUEOUS Concentration Units: ug/L <br /> QC Lot: 16 DEC 97-4A Analyzed Date: 16 DEC 97 Time: 14:54 <br /> ---------Concentration-------- Accuracy Precision <br />' Analyte Spiked -------Measured----- (3'0) ( <br /> RPD) <br /> DCS1 DCS2 DCS1 DCS2 Limits DCS Limit <br /> 1,1-Dichloroethene 10.0 10.7 10.5 107 105 78-120 1 .9 12 <br />' Benzene 10.0 9.76 9.67 98 97 78-109 0.93 10 <br /> Trichloroethene 10.0 10.6 11 .0 106 110 77-108 3.7 13 # <br /> Toluene 10.0 10.2 10.2 102 102 76-106 0.0 10 <br /> Chlorobenzene 10.0 10.7 10.4 107 104 77-106 2.8 10 # <br /> --Concentration-------- <br /> Surrogate Spiked -------Measured----- Accuracy(%) <br /> DCS1 DCS2 DCS1 DCS2 Limits <br /> 1 ,2-Dichloroethane-d4 10.0 9.74 9.67 97 97 75-121 <br /> Toluene-d8 10.0 9.47 9.41 95 94 85-111 <br /> 4-Bromofluorobenzene 10.0 9.26 9.46 93 95 81-117 <br /> 1 <br /> Note #: Outside of control limits. <br /> ' Calculations are performed before rounding to avoid round-off errors in calculated results. <br />