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i <br /> $19 Sulker Avenue, Suite$ i <br /> Sequoia Sacramento, CA 95834 <br /> 1 4 (916) 921-9600 <br /> q ,,, - Analytical FAX(916)921-0100 <br /> 40 <br /> EMCON/Pinnacle-Sacramento Project ARCO 2130,Stockton,CA Sampled 912199 <br /> 1433 N Market Blvd Project Number 21775-229 003 Received 9/3/99 <br /> Sacramento,CA 95834 Project Manager Dave Foley Reported 9/20/99 <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 /> Blank(continued) 9090110-BLK1 <br /> Ethanol 9/13199 ND ug/l 3000 <br /> Surrogate 1,1-DCA-d4 11500 580 600-140 116 <br /> Blank 209011 O-BLK2 <br /> Tert-butyl alcohol 9113/99 ND ug/l 200 <br /> Methyl tert-butyl ether ND 2 00 <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 500 592 600-140 118 <br /> Blank 9090110-13LK3 <br /> Tert-butyl alcohol 9115199 ND ug/l 200 <br /> w1 tert-butyl ether " ND 200 <br /> opropyl 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-DCA44 500 596 600-140 119 <br /> ICS 9090110-BSI <br /> Methyl tert-butyl ether 9/13199 500 484 ug/l 7D 0-130 96 8 <br /> Surrogate 1,2-DCA-d4 !' 500 582 600-140 116 <br /> LCS Dun 9090110-BSD1 <br /> Methyl tert-butyl ether 9/13/99 500 494 ug/l 70 0-I30 98 8 25 0 2 04 <br /> Surrogate 1,2-DCA-d4 rr500 578 if600-140 116 <br /> Matriz SmkeSmM 9090110-MSI S909120-26 <br /> Methyl tert-butyl ether 9113199 500 ND 490 ug/l 600-140 980 <br /> Surrogate 1,2-DCA-d4 H500 552 600-140 110 <br /> Matrix Spike Du 9090110-MSD) 5909120-26 <br /> Methyl tent-butyl ether 9113199 500 ND 522 ug/l 600-140 <br /> 10g 25 fl 5 94 <br /> Surrogate 1,2-DCA-0 500 562 600-140 112 <br /> oto Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 11 of 12 <br />