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Sequoia 819 Star Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)9z l-9600 <br /> Analytical ,NFAX(gib)921-0100 <br /> ww.sequo3alabs.com <br /> Delta Environmental Consultants-Cameron Park Project: ARCO 5469, Stockton,CA Sampled: 9/8/00 <br /> 3330 Cameron Park Dr. Project Number: N/A Received: 918/00 <br /> Cameron Park, CA 95682 Project Manager: Jay Johnson Reported: 9/27/00 <br /> Volatile Oxygenate,C $ 60AQlyConornpoundsby PA.Method r2 <br /> x <br /> m Sequoia AnalyticalSacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes" <br /> Batch: 0090199 Date Pre ared: 9121/00 Extraction Method: EPA 5030E L/Tl <br /> Blank 0090199-BLKI <br /> Tert-butyl alcohol 9/21/00 ND ug/l 200 <br /> Methyl tent-butyl ether ND 2.00 <br /> Di-isopropyl ether " ND 2.00 <br /> Ethyl tett-butyl ether ND 2.00 <br /> Tert-amyl methyl ether ND 2.00 <br /> Ethanol ND 3000 <br /> 1,2-Dichloroethane ND 2.00 <br /> Ethylene dibromide ND 2.00 <br /> Surrogate: 1,2-DCA-d4 50.0 43.8 60.0-140 97.6 <br /> LCS 0090199-13SI <br /> Methyl tert-butyl ether 9/21/00 50.0 49.8 ug/l 60.0-140 99.6 <br /> Surrogate: 1,2-DCA-d4 " 50.0 50.8 1160.0-140 102 <br /> LL�Dun 0090199-BSD I <br /> Methyl tert-butyl ether 9/21/00 50.0 49.8 ug/I 60.0-140 99.6 25.0 0 <br /> Surrogate: 1,2-DCA-d4 11 50.0 51.6 60.0-140 103 <br /> Matrix Spike 0090199-MSI 5009114-01 <br /> Methyl tert-butyl ether 9/21/00 50.0 ND 52.0 ug/l 60.0-140 104 <br /> Surrogate: 1,2-DCA-d4 50.0 44.6 60.0-140 89.2 <br /> Matrix Spike Dup 0090199-MSD1 5009114-01 <br /> Methyl tent-butyl ether 9/21/00 50.0 ND 52.8 ug/l 60.0-140 106 25.0 1.90 <br /> Surrogate: 1,2-DCA-d4 Pr 50.0 45.6 11 60.0-140 91.2 <br /> Batch: 0090202 Date Prepared: 9/22/00 Extraction Method: EPA 503013 P/T <br /> Blank 0090202-BLKI <br /> Tert-butyl alcohol 9/22/00 ND ug/l 200 <br /> Methyl tert-butyl ether ND 2.00 <br /> Di-isopropyl ether ND 2.00 <br /> Ethyl tert-butyl ether ND 2.00 <br /> Tert-amyl methyl ether ND 2.00 <br /> Ethanol ND 3000 <br /> 112-Dichloroethane ND „ 2.00 <br /> Ethylene dibromide ND H 2.00 <br /> Surrogate: 1,2-DCA-d4 50.0 53.6 fo 60.0-140 107 <br /> LCS 0090202-BSI <br /> Methyl tert-butyl ether 9/22/00 50.0 50.8 ug/l 60.0-140 102 <br /> is Analytical-Sacramento "Refer to end of report for text ofnotes and definitions. <br /> i <br /> Page 9of12 <br /> i <br /> J <br />