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• 819 Striker Avenue,Sulte 8 <br /> 4D S e qu O i a Sacramento,CA 95834 <br /> (916)921-96M <br /> Analytical FAX(916)921-0100 <br /> w <br /> • ww.sequoialabs.cs.cam <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469, Stockton, CA <br /> 3330 Cameron Paris Dr. Ste 550 Project Number: N/A Reported: <br /> Cameron Park CA, 95682 Project Manager. !ay Johnson 06/04/01 13:56 <br /> Volatile Oxygenate Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1050357- EPA 5030B [P/TI <br /> Blank(1050357-BLKI) Prepared&Analyzed:05/31/01 <br /> Tert-butyl alcohol ND 200 _ug/l <br /> Methyl tent-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 /> 1,2-Dichloroedme ND 2.00 " <br /> Ethylene dibromide ND 2.00 " <br /> Surrogate: 1,2-DCA-d4 4M 50.0 96.0 60-140 <br /> CS(1050357-BS1) Prepared&Analyzed:05/31/01 <br /> Jill Yhyl tert-butyl ether 51.0 2.00 ugh 50.0 102 60-140 <br /> -Surrogate: 1,2-DCA-d4 48.2 50.0 96.4 60-140 <br /> Matrix Spike(1050357-MSI) Source:5105405-04 Prepared&Analyzed:05/31/0I <br /> Methyl tent-butyl ether 50.7 2.00 ug/l 50.0 ND 99.2 60-140 <br /> Surrogate: 1,2-DCA-d4 48.9 50.0 97$ 60-140 <br /> I <br /> Matrix Spike Dup(1050357-MSD1) Source:S105405-04 Prepared&Analyzed: 05/31/01 <br /> Methyl tert-butyl ether 50.7 2.00 ugA 50.0 ND 99.2 60-140 0.00 25 <br /> Surrogate: 1,2-DCA44 48.4 50.0 96.8 60-140 -- <br /> Batch 1060001-EPA 5030B [P/TI <br /> Blank 1060001-BLKI) Prepared&Analyzed:06/01/01 <br /> Teri-butyl alcohol ND 200 ug/l <br /> Methyl tert-butyl ether ND 2.00 " <br /> Di-isopropyl ether ND 2,00 " <br /> Ethyl ten-butyl ether ND 2.00 " <br /> I <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-DC.444 !� 50.0 50.0 100 60-140 <br /> I. <br /> AdOL <br /> i <br /> uoia Analytical- Sacramento <br /> I tI Yl Ira results in this report apply to the samples analyzed in accordance with the chr of <br /> I <br /> custody document. This analytical report must he reproduced in its entirety <br /> i <br /> i <br /> Page 9 of 11 <br /> i <br />