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Sequoia 819 Striker Avenue Suite958 8 ' <br /> 1 q Sacramento C2 99600 - <br /> (916)921-96pp <br /> Analytical <br /> FAX(916)921 <br /> wwww sequolalabs com corn ' <br /> • <br /> SECOR International-Rancho Cordova Project ARCO 595, Stockton,CA <br /> 3017 Kilgore Road, Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky` - 08/09/01 18 05 <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 1080016- EPA 5030B [MeOH] _.—.._.,,..._—,.,. . ... . ,..—..._ <br /> Blank(1080016-BLK1) Prepared&Analyzed 08/02/01 <br /> Tert-butyl alcohol ND 10 mg/kg <br /> Methyl tert-butyl ether ND 0 10 ' <br /> Di-isopropyl ether ND 0 10 " <br /> Ethyl tert-butyl ether ND 0 10 " <br /> Teri-amyl methyl ether ND 0 10 <br /> Ethanol ND 150 <br /> 1,2-Dichloroethane ND 010 " <br /> Ethylene dibromide ND 0 10 -_- <br /> Surrogate 1,2-DCA-d4 278 250 111 60-140 <br /> LCS(1080016-BSI) Prepared &Analyzed 08/02/01 _ <br /> Methyl tert-butyl ether 257 010 mg/kg 250 103 60-140 <br /> Surrogate 12-DCA-d4 292 250 117 60-140 <br /> Matrix Spike(1080016—MSI) _ Source S10'7309-07 Prepared&Analyzed 08/02/01 <br /> Methyl tert-butyl ether 250 0 10 mg/kg 250 ND 100 60-140 <br /> Surrogate 1 2-DCA-d4 = __ —-173-- 250 _ -109= 60-140 _ <br /> Matrix Spike_Dup(1080016-M_SDI) Source 5107309-07 Prepared&Analyzed 08/02/01 — <br /> Methyl tert-butyl ether 260 0 10 mg/kg 250 ND 104 60-140 392 25 <br /> Surrogate I 1-DCA-d4 277 250 111 60-140 <br /> Batch 1080066-EPA 5030B McOH <br /> Blank(1080066-BLK1) Prepared 08/03/01 Analyzed 08/07/01 <br /> Tert-butyl alcohol ND 10 mg/kg <br /> Methyl tert-butyl ether ND 0 10 ' <br /> Di-isopropyl ether ND 0 10 " <br /> Ethyl tert-butyl ether ND 0 10 " <br /> Tert-amyl methyl ether ND 010 LL' <br /> Ethanol - ND - 150 - - - - - - <br /> 1,2-Dichloroethane ND 010 " <br /> Ethylene dihromide ND 0 10 _ _- <br /> Surrogate 1 2-DCA-d4 249 2 50 996 60-140 <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced in its entirety ' <br /> Page 9 of I 1 <br />