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5 e qu o p a 819 Sankt Avenue,Suite 8 <br /> 61� �. Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> FAX <br /> i <br /> Delta Environmental Consultants(Cameron Park) Project ARCO$469,Stockton,CA <br /> 3330 Cameron Park Dr. Ste 550 Project Number: 5469,Stockton,CA Reported: <br /> Cameron Park CA, 95682 Project Manager: Steve Carter 03/06/02 13:41 <br /> Volatile Organic Compounds by EPA Method 8260B - 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 2020279-EPA 5030B (P/TI <br /> LCS(2020279-BSI) Prepared&Analyzed: 02/25/02 <br /> Methyl tert-butyl ether 23.5 0.50 ug/1 25.0 94.0 60-140 <br /> Surrogate:1,2-DCA-d4 26.5 25.0 106 60-140 <br /> Matrix Spike(2020279-MSI) Source:S202329-08 Prepared&Analyzed: 02/25/02 <br /> Methyl tent-butyl ether 47.2 0.50 Ug/1 25.0 22 101 60-140 <br /> Surrogate.-1.2-DCA-d4 28.0 25.0 111 60-140 <br /> Matrix Spike Dup(2020279-MSD1) Source: 5202329-08 Prepared&Analyzed: 02/25/02 <br /> Methyl tort-butyl ether 46.3 0.50 ug/1 25.0 22 97.2 60-I40 1.93 25 <br /> Surrogate:),2-DCA-d4 27.8 25.0 111 60-140 <br /> atch 2p20312-EPA 5030B JPM <br /> Blank(2020312-BLKI) Prepared&Analyzed: 02/27/02 <br /> Tert-butyl alcohol ND 5.0 ugA <br /> Methyl tent-butyl ether ND 0.50 " <br /> Di-isopropyl ether ND 0.50 " <br /> Ethyl tort-butyl ether ND 0.50 " <br /> Tert-amyl methyl ether ND 0.50 <br /> Ethanol ND 50 " <br /> 1,2-Dichloroethane ND 0.50 " <br /> Ethylene dibromide ND 0.50 " <br /> Surrogate:1,2-DCA-d4 21.2 15.0 84.8 60-140 <br /> LCS(2020312-BSSPrepared&Analyzed: 02/27/02 <br /> Methyl tert-butyl ether 26.7 0.50 ug/l 25.0 107 60-140 <br /> Surrogate:1,2-DC444 21.5 25.0 86.0 60-140 <br /> equoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 13 of 15 <br />