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819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> Sequoia (916) 921-9600 <br /> 4 FAX(916)921-0100 <br /> Analytical www sequotalabs corn <br /> ATC Associates Inc -Modesto Project SUSD Franklin HS Sampied 6/5/00 <br /> 1117 Lone Palm Ave,Ste B Project Number 54 17292 0001 Received 616100 <br /> Modesto, CA 95351 Project Manager NIA Reported 6120/00 <br /> Volatile Oxygenate Compounds by EPA Method 8260A/Quality Control <br /> Sequoia Analytical- Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0060104 Date Prepared 6113100 Extraction Method EPA 50308 PIT <br /> Blank 0060104-BLK 1 <br /> Tert-butyl alcohol 6113/00 ND ug/1 200 <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 12-DC4-d4 500 470 600-140 940 <br /> LCS 0060104-BSI <br /> Methyl tert-butyl ether 6/13/00 500 47 2 ugJl 70 0-130 94 4 <br /> Sairrogate 12-DCA-d4 500 496 <br /> 60 0-140 99 2 <br /> Adw Du 0060104-BSD 1 <br /> hyl tert-butyl ether 6/13/00 500 67 6 ug/1 70 0-130 135 25 4 35 4 _ 1 <br /> Surrogate I2-DCA-d4 500 448 600-140 896 <br /> Matrix Spike 0060104-MSI 5006067-03 <br /> Methyl tert-butyl ether 6/13/00 500 735 807 ug/l 600-140 144 <br /> Surrogate 1,2-DCA-d4 500 508 600-1-40 102 <br /> Matrix Spike Dup 0060104-MSD1 S006067-03 <br /> Methyl tert-butyl ether 6/13100 500 735 812 ug/l 600-140 154 250 <br /> 6 71 _ _2 <br /> Surrogate 12-DCA-d4 500 516 600-140 103 <br /> 0 - <br /> *Refer to end of report for text of notes and deJuutions <br /> Sequoia Analytical-Sacramento <br /> Page 5 of 6 <br />