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1551 industrial Road <br /> Sequoia San Carlos CA 94070-4111 <br /> (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Blaine Tech Services Project Chevron(3) Sampled 11/17/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-6171/991117-R2 Received 11/18/99 <br /> San Jose,CA 95112 Project Manager Scott Boor Reported 1217/99 <br /> Volatile Organic Oxygenated Compounds by EPA Method78260A/Quality Control <br /> Sequoia Analytical-San Carlos _ <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9110166 Date Prepared 11/29/99 Extraction Method EPA 5030B PIT <br /> Blank 9110166-BLKI <br /> Ethanol 11/29/99 ND ug/l 1000 <br /> Tert-butyl alcohol ND 200 <br /> Methyl tent-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 2010 <br /> Surrogate 12-Dichloroethane-d4 500 552 760-114 110 <br /> Blank 9110166-BLK2 <br /> Ethanol 11/30/99 ND ug/1 1000 <br /> Tert-butyl alcohol ND 200 <br /> Methyl tent-butyl ether ND 200 <br /> sopropyl ether ND 200 <br /> qwtert-butyl ether ND " 200 <br /> -amyl methyl ether ND 200 <br /> Surrogate 12-Dichloroethane-d4 500 538 760-114 108 <br /> LCS 9110166-BSI <br /> Methyl tert-butyl ether 11/29/99 500 57 1 ug/l 700-130 114 <br /> Surrogate 1,2-Dichloroethane-d4 " 500 552 760-114 110 <br /> LCS 9110166-BS2 <br /> Methyl tert-butyl ether 11/30/99 500 468 ug/l 70 0-130 936 <br /> Surrogate 1,2-Dichloroethane-d4 500 567 760-114 113 <br /> Matrix Spike 9110166-MSI L911245-11 <br /> Methyl tert-butyl ether 11/29/99 500 ND 521 ug/l 600-140 104 <br /> Surrogate 12-Dichloroethane-d4 JP500 557 760-114 111 <br /> _Matrix Spike Dap 9110166-MSDI L911245-11 <br /> Methyl tent-butyl ether 11/30/99 500 ND 513 ug/1 600-140 103 250 0 966 <br /> Surrogate 1,2-Dichloroethane-d4 0500 555 11760-114 111 <br /> Batch 9120004 Date Prepared 12/1/99 Extraction Method EPA 5030E [P/TI <br /> Blank 9120004-BLK1 <br /> Ethanol 12/1/99 ND ug/l 1000 <br /> Tert-butyl alcohol ND 200 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> oia Analytical- San Carlos *Refer to end of report for test of notes and definitions <br /> Page 10 of 12 <br />