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Y <br /> ' +� 819 Striker Avenue,Suite 8 <br /> 41� Sequoia Sacramento;CA 95834 <br /> (91 6)921-9600 <br /> FAX(916)9 0 <br /> . Analyticalwww.sequoialabs.coabs.com <br /> wo <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469,Stockton,CA <br /> 3330 Cameron Park Dr. Ste 550 Project Number: 5469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Steve Carter 03/06/02 13:41 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-7(5202312-07)Water Sampled: 02/21/02 05:11 Received: 0212110214:05 <br /> Tert-butyl alcohol ND 5.0 ug/l 1 2020279 02/25/02 02/25102 EPA 8260B <br /> Methyl tert-butyl ether 59 0.50 <br /> Di-isopropyl ether ND 0.50 <br /> Ethyl ter-butyl ether ND 0.50 <br /> Tert-amyl methyl ether ND 0.50 <br /> 1,2-Dichloroethane ND 0.50 <br /> Ethylene dibromide ND 0,50 <br /> Surrogate:1,1-DCA-d4 116% 60-140 ---- <br /> MW-8(5202312-08)Water Sampled: 02/21/02 06:01 Received:0212110214:05 A-01a <br /> Tent-butyl alcohol ND 1000 ug/l 200 2020279 02/25/02 02/25/02 EPA 8260B <br /> Methyl tert-butyl ether 22000 100 ^ <br /> Di-isopropyl ether ND 100 <br /> othy]tert-butyl ether ND 100 <br /> ert-arnyl methyl cthcr ND 100 <br /> 1,2-Dichloroethane ND 100 ^ ^ <br /> Ethylene dibromide _ ND 100 <br /> Surrogate: 1,1-DCA-d4 106% 60-140 " ^ <br /> MW-9($202312-09)Water Sampled: 02/21/02 05:38 Received: 02121/02 14:05 <br /> Tert-butyl alcohol ND 5.0 ug/l 1 2020275 02/26/02 02/26/02 EPA 8260B <br /> Methyl tert-butyl ether ND 0.50 <br /> Di-isopropyl ether 3.1 0.50 " •' ^ <br /> Ethyl tert-butyl ether ND 0.50 ^ ^ <br /> Tert-amyl methyl ether ND 0.50 <br /> 1,2-Dichloroethane 17 0.50 " ^ <br /> Ethylene dibromide ND 0.50 <br /> Surrogate: 1,2-DCA-d4 83,2% 60-140 <br /> Adlikk <br /> equoia 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 7 of 15 <br />