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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)988-9600 FAX(925)988-9673 <br /> I <br /> Analytical819 Striker Avenue Swe 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> t 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 2125/99 <br /> 680 Chesapeake Dr Project Number 9902E24/E25 Received 3/3/99 <br /> Redwood City,CA 94063 Project Manager Kayvan Kimyai Reported 3/12/99 <br /> Volatile Organic Compounds by EPA Method 8260B/Quahty Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Urrut Recov RPD RPD <br /> Analyte Anal ed Level Result Result Units Recov Limits % Limit % Notes* <br /> Blank(continued) 9030174-BLK2 <br /> Di-isopropyl ether 3/10/99 ND mg/kg 100 <br /> 1,2-Dibromoethane(EDB) ND It <br /> 100 <br /> 1,2-Dichloroethane 11 ND 100 <br /> Ethanol ND 400 <br /> Ethyl tert-butyl ether ND 100 <br /> Methyl tert-butyl ether ND IF 100 <br /> r Surrogate Dibromofluoromethane 200 195 " 800-120 975 <br /> I Surrogate 1,2-Dichloroethane-d4 200 191 800-120 955 <br /> Surrogate Toluene-d8 200 201 810-117 100 <br /> Surrogate 4-Bromofluorobenzene 200 203 740-121 101 <br /> ILCS 9030174-BS1 <br /> Methyl tert-butyl ether 3/9/99 200 209 mg/kg 700-130 104jig <br /> Iogate Dibromofluoromethane 200 203 " 800-120 101 <br /> ogate 12-Dichloroethane-d4 200 211 800-120 105 <br /> arrogate Toluene-d8 IF 200 200 IF 810-117 100 <br /> Surrogate 4-Bromofluorobenzene it200 193 to 740-121 965 <br /> ILCS 9030174-BS2 <br /> Methyl tert-butyl ether 3/10/99 200 2 05 mg/kg 700-130 102 <br /> fSurrogate Dibromofluoromethane IF 200 198 to 800-120 990 <br /> Surrogate 1 2-Dichloroethane-d4 IF 200 2 00 IF 800-120 100 <br /> Surrogate Toluene-d8 to2 00 1 98 IF 810-117 990 <br /> Surrogate 4-Bromofluorobenzene IF 2 00 2 02 IF 740-121 101 <br /> Matn^x Spike 9030174-MSI P902644-01 <br /> Methyl tert-butyl ether 319199 200 ND 1 83 mg/kg 700-130 915 <br /> Surrogate Dibromofluoromethane 2 00 183 800-120 915 <br /> ISurrogate 1,1-Dichloroethane-d4 2 00 1 73 800-120 865 <br /> Surrogate Toluene-d8 2 00 2 03 810-117 101 <br /> Surrogate 4-Bromofluorobenzene 200 189 740-121 945 <br /> IMatrix Spike Dup 9030174-MSD1 P902644-01 <br /> Methyl tert-butyl ether 3/9199 200 ND 1 87 mg/kg 700-130 93 5 200 2 16 <br /> Surrogate Dibromofluoromethane it2 00 180 800-120 900 <br /> ISurrogate 12-Dichloroethane-d4 IF 2 00 165 �' 800-120 82 5 <br /> Surrogate Toluene-d8 if 2 00 2 00 810-117 100 <br /> Surrogate 4-Bromofluorobenzene IF 2 00 192 740-121 960 <br /> F <br /> 1 Muoia Analytical-Petaluma *Refer to end of report far text of notes and definttrons <br /> f <br /> Page 17 of 22 <br />