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a— ) (4885 Jams Dr <br /> Sequoia Magi HA,CA 95037 <br /> Analytical FAX <br /> 08)776-9600 <br /> (408)782-6308 <br /> • www sequoialabs c� <br /> Stratus Environmental Inc Project ARCO#2130 [yILL0779 <br /> 3330 Cameron Park Dr,Suite 550 Project Number ARCO#2130,Stockton,CA Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 01/10/03 16 20 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Linut Units Dilution Batch Prepared Analyzed Method Notes <br /> VW-11(MLL0779-09)Water Sampled 12/19/02 12 24 Received 12/19/02 15 55 <br /> Tert-butyl alcohol ND 50 ug/l 1 3010011 01/02/03 01/03/03 EPA 8260E HT-04 <br /> Methyl tert-butyl ether 098 050 1. 11 11 RT-04 <br /> Di-isopropyl ether ND 050 HT-04 <br /> Ethyl tert-butyl ether ND 050 HT-04 <br /> Tert-amyl methyl ether ND 050 HT-04 <br /> Surrogate 1,2-DCA-d4 130% 60-140 ^ HT-04 <br /> VW-12_(MLL0779-10J Water Sampled 12/19/02 13 15 Received 12/19/02 15 55 <br /> Tert-butyl alcohol ND 200 ug/l 1 2120520 01/02/03 01/02/03 EPA 8260B A-01 <br /> Methyl tert-butyl ether 26 050 1. " <br /> Di-isopropyl ether ND 050 " <br /> Ethyl tort-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 " <br /> Surrogate 1,2-DCA-d4 60% 60-140 " <br /> MS-1B(MLL0779-12)Water Sampled 12/19/02 13 26 Received 12/19/02 15 55 <br /> Tert-butyl alcohol ND 200 ug/1 1 2120520 01/02/03 01/02/03 EPA 8260B A-01 <br /> Methyl tert-butyl ether ND 050 " <br /> Di-isopropyl ether ND 050 " <br /> Ethyl tert-butyl ether ND 050 " ^ <br /> Tert-amyl methyl ether ND 050 ^ <br /> Surrogate 1,2-DCA-d4 114% 60-140 " <br /> MS-2A(MLL0779-13)Water Sampled 12/19/02 12 57 Received 12/19/02 15 55 <br /> Tert-butyl alcohol ND 200 ug/l 1 2120520 01/02/03 01/02/03 EPA 8260B A-01 <br /> Methyl tett-butyl ether 079 050 <br /> Di-isopropyl ether ND 050 ^ <br /> Ethyl tert-butyl ether ND 050 " <br /> Tert-amyl methyl ether ND 050 <br /> Surrogate 1,2-DCA-d4 124910 60-140 " <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise slated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> 9of17 <br />