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,� t551 Industnal Road <br /> Sequoia San Carlos, CA 94070-4111%M <br /> 4070-4 1 1 1 <br /> 4 (650) 232-9600 <br /> Analytical FAX(650) z32-9612 <br /> 3ettler-Ryan/Geostrategies(1) Project Unocal(]) Sampled 11/23/99 <br /> 1747 Sierra Court,Suite D Project Number Unocal SS#0187/Job#280045 Received 11/24/99 <br /> hiblin,CA 94568 Project Manager Deanna Harding Reported 12/10/99 <br /> - - -Volatile O--ants 0� enated Com ounds l EPA Mefhod 826W tiah Control <br /> � iYg � Y Q ty <br /> - Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> knalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9110166 Date Prepared 11/29/99 Extraction Method: EPA 5030E IPITI <br /> Blank 9110166-BLK1 <br /> Ethanol 11/29/99 ND ug/l 1000 <br /> rert-butyl alcohol ND It200 <br /> Methyl tert-butyl ether ND if200 <br /> Di-isopropyl ether ND It200 <br /> Ethyl tert-butyl ether ND 200 <br /> Pert-amyl methyl ether ND 200 <br /> Surrogate 1,2-Drchloroethane-d4 500 532 760-114 110 <br /> Blank 9110166-BLK2 <br /> Ethanol 11/30/99 ND ug/1 1000 <br /> Tert-butyl alcohol ND „ 200 <br /> Methyl tert-butyl ether ND 200 <br /> DIAMOPYI ether ND 200 <br /> Et -butyl ether ND 200 <br /> Ter -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 700-130 936 <br /> Surrogate 12-Drchloroethane-d4 300 567 760-114 113 <br />_Matrix Spike 9110166-MSI L911245-11 <br /> Methyl tert-butyl ether 11/29/99 500 ND 52 1 ug/1 600-140 104 <br /> Surrogate 1,2-Dichloroethane-d4 0 500 557 F1 760-114 111 <br /> Matrix Spike Du p 9110166-MSDI L911245-11 <br /> Methyl tert-butyl ether 11/30/99 500 ND 51 3 ug/l 600-140 103 250 0 966 <br /> Surrogate 1 2-Drchloroethane-d4 to 500 555 IT 760-114 111 <br /> Batch 9[20004 Date Prepared 1211199 Extraction Method EPA 5030B [P/Tl <br /> Blank 9120004-BLKI <br /> Ethanol 12/1/99 ND ug/l 1000 <br /> Tert-butyl alcohol " ND 200 <br /> Methyl tert-butyl ether „ ND it 200 <br /> Di-isopropyl ether ND 200 <br /> E -butyl ether " ND 2 00 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and defrnrnons <br /> Page 25 of 28 <br />