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Sequoia1551 Industrial Road <br /> San Carlos CA 94070-4t 1 1 <br /> Analytical {650232-9600 <br /> FAX(G50)) 232-9612 <br /> Sequoia-Morgan Hill Project l Sampled 7/22199 <br /> 885 Jarvis Dnve Project Number 9070023(ATC Assoc) Received 7/29/99 <br /> Morgan Hill CA 95037 Project Manager Kawan Kimyai Reported 8/5/99 13 22 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A/Quahty Control <br /> - _ s Sequoia Analytical-San,Carlos a <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9080001 Date Prepared 812/99 Extraction Method EPA 5030B 1P/T1 <br /> Blank 9080001-BLKI <br /> Ethanol 8/2/99 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 tett-butyl ether ND 200 <br /> Tert-amyl methvl ether ND 200 <br /> Surrogate 1 2-Dichloroethane-d4 500 557 760-114 111 <br /> Blank 9080001-BLK2 <br /> Ethanol 8/2/99 ND ug/l 1000 <br /> Tert-butyl alcohol ND 200 <br /> lffi�Aethyl tert-butyl ether ND 11 200 <br /> isopropyl ether ND 200 <br /> yl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 200 <br />'Surrogate 1,2-Dichloroethane-d4 500 542 760-114 108 <br /> LCS 9080001-BS1 <br /> Methyl tert-butyl ether 8/2/99 500 57 2 ug/1 700-130 114 <br /> Surrogate 12-Dichloroethane-d4 " 500 553 760-114 111 <br /> LCS 9080001-BS2 <br />'Methyl tent-butyl ether 8/2/99 500 63 l ug/1 700-130 126 <br /> Surrogate 12-Dichloroethane-d4 1150 0 541 760-114 108 <br /> Matrix Spike 9080001-MSI L907261-01 <br />'Methyl tert-butyl ether 8/2/99 500 ND 53 2 ug/1 600-140 106 <br /> Surrogate 12-Dichloroethane-d4 ffSoo 533 760-114 107 <br />'Matrix Spike Dup 9080001-MSD1 L907261-01 <br /> Methyl tert-butyl ether 8/2/99 500 ND 55 7 ug/l 600-140 Ill 25 0 461 <br /> Surrogate 12-Dichloroethane-d4 500 549 760-114 110 <br /> 1 <br /> 1 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and def ntttons <br />' Page 19 of 20 <br />