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, <br /> SeQ uoia 819 Striker Avenue,Suite 8 <br /> - ` 1 Sacramento,CA 95834 <br /> (916)921-9600 <br /> WarAnalytical fAX{916)921-0100 <br /> i <br /> www.sequoialabs.com <br /> i <br /> Delta Environmental Consultants{Cameron Park <br /> ' ) Project: ARCO 5469, Stockton, CA <br /> 3330 Cameron Park Dr. Project Number: N/A <br /> Cameron Park CA,95682Reporte:32 <br /> Project Manager: Jay Johnson <br /> 01/08/01 <br /> Volatile Oxygenate Cornpoelnds by EPA Method 8260A <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-4(5012124-04)Water Sampled: 12/11/00 10:05 Received: 12/11/00 13:48 <br /> Tert-butyl alcohol ND <br /> Di-isopropyl ether 200 ug![ 1 0120201 12/18/00 ]2/18100 EPA 8260A <br /> ND 2.00 <br /> +' „ <br /> Ethy[tert-butyl ether ND 2.00 <br /> Tert-amyl methyl ether ND 2.00 " <br /> Ethanol ND 3000 " <br /> 1,2-Dichloroethane ND 2.00 <br /> Ethylene dibromide_ ND 2.00 <br /> Surrogate:1,2-DCA-d4 102% 60-140 <br /> MW-4(5012124-04RE1)Water Sampled: 12/11/00 10:05 Received. 12/11/00 13:43 <br /> Methyl tert-butyl ether <br /> 3230 40.0 ug/E 20 0120201 12/18/00 12/19/00 EPA 8260A <br /> Surrogate. 1,2-DCA-d4 105% 60-140 <br /> MW-5(5012124-05)Water Sampled: 12111/0011:15 Received: 121111001.3:48 <br /> alcohol#t-butyl <br /> sopropyl ether 245 200 ug/[ 1 0120193 I2/15/00 12/16/00 EPA 8260A <br /> „ <br /> Ethyl tent-butyl ether ND 2.00ND 2.00 <br /> Tert-amyl methyl ether 13.1 2.00 <br /> Ethanol ND 3000 « <br /> 1,2-Dichloroethane ND 2.00 " <br /> Ethylene dibromide ND 2.00 „ <br /> Surrogate: 1,2-DCA44 � 110% 60-140 <br /> MW-5(5012124-05RE1)Water Sampled: 12/11/00 11:15 Received: 12/11/00 13:48 <br /> Methyl tert-butyl ether 12100 100 ug/l 50 0120197 12/17/00 12/17/00 EPA 8260A <br /> Surrogate: 1;2-DC,4-d4 - A-01 <br /> 106% 60-140 " — <br /> �uoia 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 6 of 14 <br />