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Sequoia 680 Chesapeake Drive Redwood City.CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 1925)988-96W FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0 100 <br /> 455 McDowell Blvd. North,Ste. D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Analytical 1155 Industrial Road San Carlos.CA 94070-4111 (650)23Z-9600 FAX(650)232-9612 <br /> Sequoia SAC(Subbed In) Project: subbed in Sampled: 4/13/99 <br /> 819 Striker Ave.,Suite 8 Project Number: S904201 Received: 4/15/99 <br /> Sacramento,CA 95834 Project Manager: Sandra Hanson Reported: 4/27/99 <br /> Semivolatile Organic Compounds by EPA Method 8270B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Reeov, RPD RPD <br /> Analyte Ana! zed Level Result Result Units Recov. Limits % Limit % Notes* <br /> LCS(continued) 9040439-BSI <br /> 4-Nitrophenol 4/26/99 5000 4530 ug/kg 31.0-109 90.6 <br /> N-Nitrosodi-n-propylamine 3330 2840 23.0-117 85.3 <br /> Pentachlorophenol 5000 3670 34.0-114 73.4 <br /> Phenol 5000 2950 20.0-105 59.0 <br /> Pyrene 3330 1720 30.0-124 51.7 <br /> 1,2,4-Trichlorobenzene 3330 2220 28.0-112 66.7 <br /> Surrogate: 2-Fluorophenol 5000 2920 25.0-121 58.4 <br /> Surrogate: Phenol-d6 5000 3280 24.0-113 65.6 <br /> Surrogate: Nitrobenzene-d5 3330 2140 23.0-120 64.3 <br /> Surrogate: 2-Fluorobiphenyl 3330 2230 30.0-115 67.0 <br /> Surrogate: 2,4,6-Tribromophenol 5000 4180 19.0-122 83.6 <br /> Surrogate: Terphenyl-d14 3330 2380 18.0-137 71.5 <br /> A1111116atrix Spike 9040439-MSI P904319-08 <br /> naphthene 4/26/99 3330 ND 2780 ug/kg 30.0-110 83.5 <br /> 4-Chloro-3-methyl phenol 5000 ND 3860 27.0-109 77.2 <br /> 2-Chlorophenol 5000 ND 3150 24.0-98.0 63.0 <br /> 1,4-Dichlorobenzene 3330 ND 2600 24.0-89.0 78.1 <br /> 2,4-Dinitrotoluene 3330 ND 2750 35.0-110 82.6 <br /> 4-Nitrophenol 5000 ND 4570 20.0-110 91.4 <br /> N-Nitrosodi-n-propylamine 3330 ND 2930 23.0-109 88.0 <br /> Pentachlorophenol 5000 ND 3610 25.0-123 72.2 <br /> Phenol 5000 ND 3220 19.0-100 64.4 <br /> Pyrene 3330 ND 1680 12.0-131 50.5 <br /> 1,2,4-Trichlorobenzene 3330 ND 2460 17.0-110 73.9 <br /> Surrogate: 2-Fluorophenol 5000 3380 25.0-121 67.6 <br /> Surrogate: Phenol-d6 5000 3570 24.0-113 71.4 <br /> Surrogate: Nitrobenzene-d5 3330 2330 23.0-120 70.0 <br /> Surrogate: 2-Fluorobiphenyl 3330 2270 30.0-115 68.2 <br /> Surrogate: 2.4,6-Tribromophenol 5000 4130 19.0-122 82.6 <br /> Surrogate: Terphenyl-d14 3330 2290 18.0-137 68.8 <br /> Matrix Spike Dun 9040439-MSD1 P904319-08 <br /> Acenaphthene 4/26/99 3330 ND 2830 ug/kg 30.0-110 85.0 26.0 1.78 <br /> 4-Chloro-3-methylphenol 5000 ND 3920 27.0-109 78.4 21.0 1.54 <br /> 2-Chlorophenol 5000 ND 3360 24.0-98.0 67.2 27.0 6.45 <br /> 1,4-Dichlorobenzene 3330 ND 2680 24.0-89.0 80.5 25.0 3.03 <br /> 2,4-Dinitrotoluene 3330 ND 2880 35.0-110 86.5 15.0 4.61 <br /> 4-Nitrophenol 5000 ND 4760 20.0-110 95.2 23.0 4.07 <br /> N-Nitrosodi-n-propylamine 3330 ND 3060 23.0-109 91.9 31.0 4.34 <br /> ntachlorophenol 5000 ND 3700 25.0-123 74.0 43.0 2.46 <br /> equoia Analytical -Petaluma *Refer to end of report for text of notes and definitions, <br /> Page 6 of 8 <br />