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819 Striker Avenue Suite 8 <br /> 4 Sequoia Sacramento CA 95834 <br /> 1:� <br /> i 0 (916)921-9600 <br /> FAX 921 Analytical www sequoialabs cam <br /> ATC Associates Inc -Modesto Project Diesel Performance <br /> 1117 Lone Palm Ave,Ste 13 Project Number 54 62577 0001 Reported <br /> Modesto CA,95351 Project Manager Jeanne Homsey 02/27/01 12 29 <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 0120297 -EPA 5030B [P/T[ <br /> Blank(0120297-BLK1) Prepared&Analyzed 12/27/00 <br /> Tert butyl alcohol ND 200 ug/I <br /> Methyl tert-butyl ether 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 512 500 102 60 140 <br /> Blank(0120297-BLK2) Prepared&Analyzed 12/28/00 <br /> Tert butyl alcohol ND 200 ug/l <br /> Methyl tert-butyl ether ND 200 " <br /> 4Wi-isopropyl ether ND 200 <br /> hyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 200 <br /> i <br /> Ethanol ND 3000 <br /> Surrogate 12-DCA-d4 500 500 100 60-140 <br /> LCS(0120297-BSI) Prepared&Analyzed 12/27/00 <br /> Methyl tert-butyl ether 520 200 ug/1 50 0 104 70-130 — <br /> Surrogate 1 2-DCA-d4 516 500 103 60-140 <br /> LCS Dup(0120297-BSD1) Prepared&Analyzed 12/27/00 <br /> Methyl tert-butyl ether 534 200 ug/1 500 107 70-130 2 66 25 <br /> Surrogate 12 DCA-d4 .530 500 106 60-140 <br /> Matrix Spike(0120297-MSI) Source S012158-03 Prepared&Analyzed 12/27/00 _ <br /> Methyi tert butyl ether 382 200 ug/1 50 0 290 184 60-140 Q-03 <br /> Surrogate 1 2 DCA-d4 526 500 105 60 140 <br /> equola 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 8 of 10 <br />