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FSequoia <br /> 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> i <br /> Sequoia-RC(Subbed In) Project Kayvon Kimyai 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 Mana er Ka an Kimyai Reported 3/12/99 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Llnut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Lirtuts % Linut % Notes* <br /> Batch 9030177 Date Prepared 3/8/99 Extraction Method EPA 5030 waters <br /> Blank 9030177-BLK1 <br /> Tert-amyl methyl ether 3/8/99 ND ug/1 100 <br /> Tert-butyl alcohol ND 200 <br /> Di-isopropyl ether ND 100 <br /> 1,2-Dibromoethane(EDB) ND 0 500 <br /> 1,2-Dichloroethane ND 0 500 <br /> Ethanol " ND 100 <br /> Ethyl tert-butyl ether ND 100 <br /> Methyl tert-butyl ether ND 100 <br /> Surrogate Dibromofluoromethane 500 4 84 860-118 968 <br /> Surrogate 1,2-Dichloroethane-d4 5 00 4 94 800-120 988 <br /> Surrogate Toluene-d8 IF5 00 4 80 IF880-110 960 <br /> Surrogate 4-Bromofluorobenzene if 5 00 4 71 fo 860-115 942 <br /> Ok, 9030177-BLK2 <br /> Tert-amyl methyl ether 3/9/99 ND ugA 100 <br /> Tert-butyl alcohol ND 200 <br /> IDi-isopropyl ether ND 100 <br /> 1,2-Dtbromoethane(EDB) ND 0 500 <br /> 1,2-Dtchloroethane ND 0 500 <br /> Ethanol ND 11 100 <br /> Ethyl tert-butyl ether ND 100 <br /> Methyl tert-butyl ether ND 100 <br /> Surrogate Dibromofluoromethane 500 4 88 860-118 976 <br /> Surrogate 1,2-Dichloroethane-d4 5 00 475 FO 800-120 950 <br /> Surrogate Toluene-d8 Soo 4 65 to 880-110 93 0 <br /> Surrogate 4-Bromofluorobenzene 5 00 4 65 IF 860-115 93 0 <br /> Blank 9030177-BLK3 <br /> Tert-amyl methyl ether 3/9/99 ND ugA 100 <br /> Tert-butyl alcohol ND 200 <br /> Di-isopropyl ether ND 11 100 <br /> 1,2-Dlbromoethane(EDB) ND 0 500 <br /> 1,2-Dichloroethane ND 0 500 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND -- 100 <br /> Methyl tert-butyl ether ND " 100 <br /> Surrogate Dibromofluoromethane IF 500 4 93 860-118 98 6 <br /> Surrogate 1,2-Dichloroethane-d4 500 4 64 800-120 928 <br /> Surrogate Toluene-d8 IF500 5 16 880-110 103 <br /> 0 t 4-Bromofluorobenzene IF500 520 860-115 104 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 18 of 22 <br />