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Sequoia 819 Striker Avenue Suite$ <br /> Sacramento GA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(916) 00 <br /> a• !Y www sequolmass alaUs c coin <br /> Delta Environmental Consultants(Cameron Park) Project ARCO 2168, Stockton,CA <br /> 3330 Cameron Park Dr Project Number N/A Reported <br /> Cameron Park CA,95682 Project Manager Jay 3ohnson 02/08/01 13 34 <br /> Volatile Oxygenate Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Anal}tical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD U reit Notes <br /> Batch 0120019-EPA 5030B [P/TI <br /> Blank(0120019-BLKI) Prepared&Analyzed 12/01/00 <br /> Tert-butyl alcohol ND 200 ug/l <br /> Methyl tent-butyl ether ND 200 " <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-ami 1-reth)1 ether ND 200 <br /> Ethanol ND 3000 <br /> 1,2-Dichloroethane ND 200 <br /> Suv rogate 12-DCA-d4 482 -)00 964 60-140 <br /> LCS(0120019-BSI) T Prepared&Analyzed 12/01/00 <br /> thyl tert-butyl ether 494 200 ug/I 500 998 70-130 <br /> gate 12-DCA-d4 ')00 .500 100 60-140 --——— <br /> LCS Dup(0120019-BSDI) Prepared&Analyzed 12/01/00 <br /> Methyl Cert-butyl ether 502 2 00 uo/l 500 100 70-130 1 61 200 <br /> Surrogate 12-DCA-d4 504 500 Jul 60-140 <br /> Matrix Spike(0120019-MS1) Source S011319-13 Prepared&Analyzed 12/01/00 _ <br /> Methyl tert-butyl ether 504 200 ug/1 500 ND 101 60-140 <br /> Surrogate 12-DCA-d4 508 500 102 60-140 <br /> Matrix Spike Dup(0120019-MSD1) Source 5011319-13 Prepared&Analyzed 12/01/00 <br /> Methyl tert-butyl ether 528 2 00 ugll 500 ND 106 60-140 4 65 25 <br /> Surrogate 1 2-DCA-d4 518 50 0 104 60-140 <br /> Ask <br /> oia Analytical- Sacramento The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 16 of 19 <br />