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a <br /> V Sequoia 819 Striker Avenue,Surte 8 <br /> Sacramento CA 95834 <br /> (916)9ZI-9600 <br /> Analytical FAX(916)921-01100 <br /> 4w www seduoialabs corn <br /> Delta Environmental Consultants(Rancho Cordova Project Arco 2130, Stockton,CA <br /> 3164 Gold Camp Drive Ste 200 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Jay Johnson 04/02/01 11 56 <br /> Volatile Oxygenate Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Anal Reporting Spike Source %REC RPD <br /> Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1030379- BPA 5030B [P/T[ <br /> Blank(1030379-BLK1) Prepared&Analyzed 03/28/01 <br /> Tert-butyl alcohol ND 200 ug/I <br /> Methyl tent-butyl ether ND 2 00 " <br /> Di-isopropyl ether ND 2 00 " <br /> Ethyl tert-butyl ether ND 200 " <br /> Tert-amyl methyl ether ND 200 „ <br /> Ethanol ND 3000 " <br /> Surrogate 1 2-DCA-d4 419 500 838 60-140 <br /> LCS(1030379-BSI) Prepared&Analyzed 03/28/01 <br /> Methyl tert-butyl ether _ 475 2 00 ug/1 50 0 95 0 60-140 <br /> OSurrogate 12 DC,4-d4 420 500 840 60-140 <br /> ix Spike(1030379-MSI) Source 5103323-01 Prepared&Analyzed 03/28/01 <br /> Methyl Cert-butyl ether 500 200 ug/I 500 ND 100 60-140 <br /> Surrogate 12 DCA-d4 442 500 884 60-140 <br /> Matrix Spike Dup (1030379-MSD1) Source S103323-01 Prepared&Analyzed 03/28/01 <br /> Methyl Eert-butyl ether _ 493 200 ug/I 500 ND 986 60-140 1 41 25 <br /> Surrogate 1 2-DCA-d4 43 7 500 874 60 140 <br /> Batch 1030398-EPA 5030B PIT <br /> Blank(1030398-BLKI) Prepared&Analyzed 03/29/01 <br /> Tert-butvl alcohol ND 200 ugfl <br /> Methyl tert-butyl other ND 200 " <br /> Di-isopropyl ether ND 200 " <br /> Ethyl tert-butyl ether ND 200 " <br /> Tert-amyl methyl ether ND 200 „ <br /> Ethanol ND 3000 „ <br /> Surrogate 1 2-DCA-d4 409 _ , 500 818 60-140 <br /> 1a 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 12 of 14 <br />