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680 Chesapeake Drive Redwood City.CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-%00 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento.CA 95834' (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd.North,Ste. D Petaluma,CA 94954 (707)792-1865 FAX(707)79Z-0342 <br />' Sequoia-RC(Subbed In) Project: Kayvon Kimyai Sampled: 2126199 <br /> 680 Chesapeake Dr. Project Number: 9903044 Received: 3/3199 <br />' Redwood City,CA 94063 Project Manager: Kayvan Kimyai Reported: 3/8/99 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> LCS 9030125-BSI <br /> Methyl tert-butyl ether 3/4199 5.00 3.93 ug/l 70.0-130 78.6 <br /> Surrogate: Dibromofluoromethane 5.00 4.92 86.0-118 98.4 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 5.21 80.0-120 104 <br /> 'Surrogate: Toluene-d8 5.00 4.74 'I 88.0-110 94.8 <br /> Surrogate: 4-Bromofluorobenzene 5.00 4.84 86.0-115 96.8 <br /> LCS 9030125-13S2 <br /> Methyl tert-butyl ether 3/5/99 5.00 4.29 ug/l 70.0-130 85.8 <br /> Surrogate: Dibromofluoromethane 5.00 4.86 86.0-118 97.2 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 5.05 80.0-120 101 <br /> Surrogate: Toluene-d8 5.00 4.78 88.0-110 95.6 <br /> Surrogate: 4-Bromofluorobenzene 5.00 4.75 86.0-115 95.0 <br /> 9030125-BS3 <br /> I* <br /> hyi tert-butyl ether 3/5/99 5.00 _ 4.40 ug/i 70.0-130 88.0 <br /> Surrogate: Dibromofluoromethane 5.00 4.95 86.0-118 99.0 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 5.14 80.0-120 103 <br /> 'Surrogate: Toluene-d8 IF5.00 4.88 68.0-110 97.6 <br /> Surrogate: 4-Bromofluorobenzene If5.00 4.94 86.0-115 98.8 <br /> Matrix Spike 9030125-MSI P903089-05 <br /> Methyl tert-butyl ether 3/4/99 5.00 ND 4.44 ug/l 70.0-130 88.8 <br /> Surrogate: Dibromofluoromethane 5.00 5.17 86.0-118 103 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 5.42 80.0-120 108 <br /> Surrogate: Toluene-d8 ,I 5.00 4.96 88.0-110 99.2 <br /> Surrogate: 4-Bromofluorobenzene 5.00 4.82 86.0-115 96.4 <br /> Matrix Spike_Dup 9030125-MSD1 P903089-05 <br /> Methyl tent-butyl ether' 314/99 5.00 ND 4.39 ug/l 70.0-130 87.8 15.0 1.13 <br /> Surrogate: Dibromofluoromethane 1, 5.00 5.10 86.0-118 102 <br /> Surrogate: 1,2-Dichloroethane-d4 5.00 5.43 80.0-120 109 <br /> 'Surrogate: Toluene-d8 5.00 4.87 88.0-110 97.4 <br /> Surrogate: 4-Bromofluorobenzene 5.00 4.95 86.0-115 99.0 <br /> 1 <br /> 'Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions. <br /> ' Page 4 of 5 <br />