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Sequoia B19 Straker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> 4D <br /> FAX(916)921-06001 DO <br /> Analytical www secluoialabs com <br /> J <br /> Stratus Environmental Project ARCO 2168, Stockton,CA <br /> 3330 Cameron Park Drive,Ste 550 Protect Number 2168, Stockton,CA Reported <br /> Cameron Park CA, 95682 ProjectManager Jay Johnson 06/21/02 12 28 <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-2(5206168-04)Water Sampled 06/13/02 08 31 Received 06/13/02 12 10 R-05 <br /> Tert-butyl alcohol 33 25 ug/l 5 2060166 06/14/02 06/14/02 EPA 8260B <br /> Methyl test-butyl ether ND 25 " <br /> Di-isopropyl ether ND 25 " <br /> Ethyl test-butyl ether ND 25 " <br /> Tert-amyl methyl ether ND 25 " <br /> 1,2-Dichloroethane 69 __ 25 <br /> Surrogate 1 2-DCA-d4 108% 60-140 " " <br /> MW-3 (5206168-05)Water Sampled 06/13/02 06 29 Received 06/13/02 12 10 R-05 <br /> Tert-butyl alcohol ND 500 tigA 100 2060166 06/14/02 06/14/02 EPA 8260B <br /> Methyl tert-butyl ether ND 50 <br /> Di-isopropyl ether ND 50 " <br /> thy]tent-butyl ether ND 50 " <br /> amyl methyl ether ND 50 <br /> -Dichloroethane _ 200 50 " <br /> Surrogate 1,2-DCA-d4 111 % 60-140 " " " " <br /> MW-4(5206168-06)Water Sampled 06/13/02 10 25 Received 06/13/02 12 10 R-05 <br /> Tert-butyl alcohol ND 500 ug/I 100 2060166 06/14/02 06/14/02 EPA 8260B <br /> Methyl tert-butyl ether ND 50 <br /> Di-isopropyl ether ND 50 " <br /> Ethyl tert-butyl ether ND 50 <br /> Tert-amyl methyl ether ND 50 " <br /> 1,2-Dichloroethane 130 50 <br /> Surrogate 12-DCA-d4 102% 60-140 11 " <br /> equoia Analytical- Sacramento The results in Mrs 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 5 of 10 <br />