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I680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 4 F <br /> Sequoia 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> I ' Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX`916)921- 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 792-1865 FAX 707 792-0342 <br /> i <br /> Sequoia-RC(Subbed In) Protect Kayvon Kimyal Sampled 2/23/99 to 2/25/99 <br /> 680 Chesapeake Dr Protect Number 9902E24/E25 Received 3/3199 <br /> Redwood City,CA 94063 Pro cct Manager Ka an Kim w Reported 3/12/99 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Linut Recov RPD RPD <br /> JAnalyte Analyzed Level Result Result Units Recov Limits % Limit IN, Notes"' <br /> Batch 9020605 Date Prepared 2126199 Extraction Method EPA 5030 soils <br /> Blank 9020605-BLKI <br /> Tert-amyl methyl ether 2127199 ND mg/kg 000500 <br /> Tert-butyl alcohol ND 0100 <br /> Di-isopropyl ether ND " 000500 <br /> 1,2-Dibromoethane(EDB) ND 000500 <br /> 1,2-Dichloroethane ND 000500 <br /> IEthanol ND 0200 <br /> Ethyl tert-butyl ether ND 000500 <br /> Methyl tert-butyl ether _ ND 000500 <br /> Surrogate Dibromofluoromethane 00500 00491 to 800-120 982 <br /> Surrogate 1,2-Dich1oroethane-d4 00500 00512 IF 800-120 102 <br /> Surrogate Toluene-d8 1000500 00478 '1 810-117 95 6 <br /> Surrogate 4-Bromofluorobenzene if 00500 00456 IF 740-121 912 <br /> W,I_ak 9020605-BLK4 <br /> myl methyl ether 3/10/99 ND mg/kg 000500 <br /> 'Pert-butyl alcohol ND 0 100 <br /> Di-isopropyl ether ND 000500 <br /> 1,2-Dibromoethane(EDB) ND 000500 <br /> 1,2-Dichloroethane ND 000500 <br /> Ethanol ND 0200 <br /> Ethyl tert-butyl ether ND 000500 <br /> Methyl tert-butyl ether ND IF 000500 <br /> .Surrogate Dibromgfluoromethane 00500 00483 " 800-120 966 <br /> Surrogate 1,2-Dichloroethane-d4n 00500 00444 It80 0-120 888 <br /> Surrogate Toluene-d$ 00500 00520 IF 810-117 104 <br /> Surrogate 4-Bromofluorobenzene to 00500 00520 If 740-121 104 <br /> LCS 9020605-BS1 — <br /> Methyl tert-butyl ether 2/27/99 00500 00490 mg/kg 700-130 98 0 <br /> Surrogate Dibromofluoromethane 0 0500 0 0505 80 0-120 101 <br />' Surrogate 1,2-Dichloroethane-d4 00500 00533 IF 800-120 107 <br /> Surrogate Toluene-d8 IF00500 00456 It810-117 911 <br /> Surrogate 4-Bromofluorobenzene 14 00500 00477 It740-121 954 <br /> LCS 9020605-BS4 -- <br /> Methyl tert-butyl ether 3/10/99 00500 00474 mg/kg 700-130 948 <br /> Surrogate Dibromofluoromethane IF 00500 00536 IF800-120 107 <br /> Surrogate 1,2-Dichloroethane-d4 to0 0500 00564 800-120 113 <br /> Surrogate Toluene-d8 00500 00484 810-117 968 <br /> rrogate 4-Bramofluorobenzene 00500 00531 740-121 106 <br /> uoia Analytical-Petaluma *Refer to end of report for text of notes and def nittons <br /> Page I 1 of 22 <br />