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i a f <br /> 819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)92t-960096W <br /> FAX (916)92.1 0100 <br /> Apr Analytical www sequoialabs com <br /> SI-COR [ntLrnationa[ -Rancho Cordova Projeut ARCO 595 Stockton,CA Sampled 11/2/00 <br /> 3017 Kilgore,Road SuttL 100 Project Number N/A Received 11/2/00 <br /> Rancho Cordova CA 95670 Project Manager Rusty Benkoskv Reported 11/17/00 <br /> Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Date Spike Sample QC Reporting Limit Rccov RPD RPI) <br /> Analvit, Analy/cd I e.vel Result R�,Ult Units Rcco% Limits % Limit % NWLS* <br /> Batch OK15020 Date Prepared 11/15/00 Extraction Method EPA 5030B IP/Tl <br /> Blank OK15020-BLK2 <br /> Ethanol 11/15/00 ND ug/t 500 <br /> teri-Butyl alcohol ND 50 <br /> Methyl ten-butyl ether ND 20 <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> Cert-Amyl methyl ether ND 20 <br /> l 2-Drchloroethane ND 20 <br /> Ethylene dibro_mide ND 2 0 <br /> Surrogate Dibronrofluoromethane 500 510 T _ 50-150 102 <br /> Surrogate 12-Drchloroethane-d4 500 480 50-150 960 <br /> S nk OK15020-B1.K3 <br /> of 11/16/00 ND ug/l 500 <br /> t utyl alcohol ND 50 <br /> Methyl tert-butyl ether ND 20 <br /> Di-tsopropyl ether ND 20 <br /> Ethyl tent-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 <br /> 1 2-Dichloroethane ND 20 <br /> Ethylene dibromid_e _ND __ 20_ __ _ <br /> Surrogate Dtbromohuoromethane - SO 0 _ 47 0 SO-150 94 0 <br /> Surrogate 1 2-Drchloroethane-d4 10500 400 50-150 800 <br /> LCS OK15020-BS2 <br /> Methyl tert-_butyl ether 111_15/00 500 __ 465 ug/1 _ 70-130_ _93 0 <br /> Surrogate Dtbromofluoromethane� 500 510 50-150 102 <br /> Surrogate 12-Drchloroethane-d4 500 460 50-150 920 <br /> LCS OK15020-BS3 <br /> Methyl ten-butyl ether _ _ _ 11/16/00 __500 _ _ 42 I ug/l_ _ 7_0-130 842 <br /> Surrogate Dtbramofluoromethane 500 470 50-150 940 <br /> Surrogate 12-Drchloroethane-d4 500 390 50-150 780 <br /> 117atrix Spike OK15020-MSI W011292-01 <br /> Methyl t_ert-butyl ether 11115/00_ 50_0 ND 436 ug/l - 60-150 872 <br /> Surrogate DibromojUoromethane 500 510 50-150 102 <br /> Surrogate 1 2-Drchloroethane-d4 50 1) 470 50-150 940 <br /> Matrix Spike Du OK15020-MSDI W01 1 292-0 1 <br /> 49 yl tent-butyl ether 11/15/00 500 ND 478 ug/l 60-150 956 25 919 <br /> Sequoia Analytical -Sacramento *Refer to end of report for text of notes and definitions <br /> Page got 10 <br />