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r c, <br /> j IFUanferra , <br /> Environmental <br /> services <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Semivolatile Organics by GC/MS <br /> Project: 092397 <br /> Category: 625-A Acid, Base and Neutrals by GC/MS. <br /> Testcode: 8270CP-TCL-A Method: 8270 R <br /> Matrix: AQUEOUS Concentration Units: ug/L 'i- <br /> QC Lot: 26 MAR 97-11A Analyzed Date-' 28 MAR 97 Time: 22:52, - yy <br /> --------Concentration-------- Accuracy Precision <br /> Analyte Spiked -------Measured----- N (RPD) m <br /> DCS1 DCS2 DCS1 DCS2 Limits DCS Limit f1 <br /> Phenol 75.0 22.2 24.6 Y 30 33 10-49 10 ' ` 44 <br /> 2-Chlorophenol 75.0 51.9 56.9 69 76 48-91 9.2 43 <br /> 1,4-Dichlorobenzene 50.0 26.5 29. 1 53 58 38-84 .9.4 41 ' <br /> N-Nitroso-di- it i <br /> n-propylamine 50.0 34.2 37.9 68 76 30-118 10' 40� <br /> 1,2,4- 3' <br /> Trichlorobenzene 50.0 29.7 33.9 59 68 41-91 13 € 43 <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 r <br /> Pyrene 50.0 41.4 44.8 83 90 60-100_ 7.9 15 <br /> Li <br /> ---------Concentration------- 1 <br /> Surrogate Spiked -------Measured---- Accuracy(%) <br /> DCSI DCS2 DCS1 DCS2 Limits <br /> Nitrobenzene-d5 50 35 38 69 76 41=101 s " <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 /> 241uorophenol 75 34 36 ., 46 48 25-61 <br /> 2,4,6-Tribromophenol 75. 70 '71,Ks 94 94 51-95 <br /> J <br /> I d <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> ,F - <br />