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Q001banterra <br /> Environmental <br /> Services <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Semivolatile Organics by GC/MS <br /> Project: 092398 <br /> Category: 625-A Acid, Base and Neutrals by GC/MS. <br /> Testcode: 8270CP-TCL-A Method: 8270 <br /> Matrix: AQUEOUS Concentration Units: ug/L <br /> QC Lot: 26 MAR 97-IIA Analyzed Date: 28 MAR 97 Time: 22:52 <br /> ---------Concentration-------- Accuracy Precision <br /> Analyte Spiked -------Measured----- M (RPD) <br /> DCS1 DCS2 DCS1 DCS2 Limits DCS Limit <br /> Phenol 75.0 22.2 24.6 30 33 10-49 10 44 <br /> 2-Chlorophenol 75.0 51.9 56.9 69 76 48-91 9.2 43 „ 1 <br /> 1,4-Dichlorobenzene 50.0 26.5 29.1 53 58 38-84 9.4 41 I <br /> N-Nitroso-di- V <br /> n-propylamine 50.0 34.2 37.9 68 76 30-118 10 ' 40 <br /> 1,2,4- ` <br /> Trichlorobenzene 50.0 29.7 33.9 59 68 41-91 13 43 J <br /> 4-Chloro-3- <br /> methylphenol 75.0 59.5 64.9 79 87 47-98 8.7 36 <br /> Acenaphthene -50.0 39.2 42.2 78 84 58-99 7.4 34 <br /> 4-Nitrophenol 75.0 9.14 11.6 12 15 10-42 24 25 <br /> 2,4-Dinitrotoluene 50.0 35.8 38.2 72 76 49-90 6.5 15 <br /> Pentachlorophenol 75.0 58.8 59.7 78 80 35-110 1.5 22 <br /> Pyrene 50.0 41 .4 44.8 83 90 60-100 7.9 15 <br /> --------- <br /> Surrogate Spiked -------Measured----- Accuracy(%) , <br /> DCS1 DCS2 DCS1 DCS2 Limits ' <br /> Nitrobenzene-d5 50 35 38 69 76 41-101 <br /> 2-Fluorobiphenyl 50 37 41 74 83 44-105 <br /> Terphenyl-d14 50 43 46 86 92 56-97 <br /> Phenol-d5 75 22 24 29 33 10-51 <br /> 2-Fluorophenol 75 34 36 46 48 25-61 <br /> 2,4,6-Tribromophenol 75 70 71 94 94 51-95 <br /> J <br /> J <br /> J <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. J <br /> 1 <br />