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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> I � 404 N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 8I9 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> � '+AtAnalytical1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ISequoia-RC(Subbed In) Project Kayvon Kimyat Sampled 2/23/99 to 2/25/99 <br /> 680 Chesapeake Dr Project Number 9902E24/E25 Received 3/3/99 <br /> Redwood City,CA 94063 Project Manager Kayvan Kim ai Reported 3/12/99 <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 /./nits Recov Limits % Limit % Notes* <br /> Blank(continued) 9030118-BLK3 <br /> Ethanol 3/9/99 ND mg/kg 0200 <br /> Ethyl tert-butyl ether ND 000500 <br /> I Methyl cert-butyl ether ND 000500 <br /> Surrogate Dibromofluoromethane 00500 00477 IF <br /> 800-120 954 <br /> Surrogate 1,2-Dichloroethane-d4 00500 00446 IF <br /> 800-120 892 <br /> Surrogate Toluene-d8 00500 00500 IF 810-117 100 <br /> ISurrogate 4-Bromofluorobenzene 00500 00502 740-121 100 <br /> Blank 9030118-BLK4 <br /> Tert-amyl methyl ether 3111/99 ND mg/kg 000500 <br /> I Tert-butyl alcohol ND " 0100 <br /> Di-isopropyl ether ND It <br /> 000500 <br /> 1,2-Dibromoethane(EDB) ND 000500 <br /> Dichloroethane ND " 000500 <br /> of ND 0200 <br /> yl tert-butyl ether ND 000500 <br /> Methyl tent-butyl ether ND 000500 <br /> i Surrogate Dibromofluoromethane 00500 00500 IF 800-120 100 <br /> I Surrogate 1,2-Dichloroethane-d4 IF00500 00516 11800-120 103 <br /> Surrogate Toluene-d8 1100500 00495 IF 810-117 990 <br /> Surrogate 4-Bromofluorobenzene IF <br /> 00500 00516 IF <br /> 740-121 103 <br /> ILCS 9030118-BSI <br /> Methyl tert-butyl ether 3/4/99 00500 00481 mg/kg 700-130 962 <br /> Surrogate Dibromofluoromethane 00500 00509 to 800-120 102 <br /> Surrogate 12-Drchloroethane-d4 00500 00529 IF 800-120 106 <br /> Surrogate Toluene-d8 to 00500 00486 810-117 972 <br /> Surrogate 4-Bromofluorobenzene 00500 00488 740-121 976 <br /> ILCS 9030118-BS2 <br /> Methyl tert-butyl ether 3/8/99 00500 00510 mg/kg 700-130 102 <br /> Surrogate Dibromofluoromethane 00500 00520 800-120 104 <br /> Surrogate 1,2-Dichloroethane-d4 00500 00575 800-120 115 <br /> Surrogate Toluene-d8 00500 00489 810-117 978 <br /> Surrogate 4-Bromofluorobenzene 00500 00506 740-121 101 <br /> ILCS 9030118-BS3 <br /> Methyl tert-butyl ether 3/9/99 00500 00455 mg/kg 700-130 91 0 <br /> Surrogate D¢bromofluoromethane to 00500 00507 800-120 101 <br /> Surrogate 1,2-Dichloroethane-d4 000500 00494 800-120 988 <br /> rrogale Toluene-d8 It <br /> 00500 00526 " 810-117 105 <br /> uola Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 15 of 22 <br />