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885 jams 1h <br /> Sequoia MarganHin,CA95037 <br /> (408)776.9600 <br /> a_ � <br /> Analytical FAX(408)782-6308 <br /> www sequoialabs can <br /> Stratus Environmental Inc Project ARCO#2130 MLL0779 <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 Lurut Units DiIut3on Batch Prepared Analyzed Method Notes <br /> VW-5 LL0779-05 Water Sampled 12/19/02 07 53 Received 12/19/02 15 55 <br /> Tert-butyl alcohol 16 50 ugll 1 3014011 01/02/03 01/02103 EPA 82608 <br /> Methyl tert-butyl ether 60 050 " <br /> Di-isopropyl ether 067 050 <br /> Ethyl tert-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 <br /> Surrogate 1,2-DCA-d4 90% 60-140 ^ <br /> VW-7 MLL0779-06 Water Sampled 12/19/021248 Received 12/19/0215 55 <br /> Tert-butyl alcohol 77 50 ug/1 1 3010011 01/02/03 01/02/03 EPA 8260E <br /> Methyl tert-butyl ether 11 050 <br /> I <br /> Dr-isopropyl ether ND 050 <br /> Ethyl tert-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 <br /> Surrogate 1 2-DCA-d4 102% 60-140 <br /> VW-8(MLL0779-07)Water Sampled 12/19/02 09 13 Received 12/19/02 15 55 <br /> •Tert-butyl alcohol ND 10 ugA 2 3010011 01/02/03 01/04/03 EPA 8260B A-]0,HT RS, <br /> R-OS <br /> Methyl tert-butyl ether ND 1 0 A 10,HT-RS, <br /> R-05 <br /> Dr-isopropyl ether ND 1 0 A-10,HT-RS, <br /> R-05 <br /> Ethyl tert-butyl ether ND 1 0 A-10,HT-RS, <br /> R-05 <br /> Tert-amyl methyl ether ND 10 A-10,HT-RS, <br /> R-05 <br /> Surrogate 1,2-DCA-d4 127% 60-140 A-10HT-RS <br /> R-05 <br /> VW-10 L0779-08 Water Sampled 12/19/02 08 30 Received-12/19/02 15 55 <br /> Tert-butyl alcohol ND 100 u8A 20 3010011 01/02/03 01/03/03 EPA 8260B HT-04,R-05 <br /> Methyl tert-butyl ether ND 10 HT-04,R-05 <br /> Di-isopropyl ether ND 10 HT-04,R-05 <br /> Ethyl tert-butyl ether ND 10 HT-04,R-05 <br /> Tert-amyl methyl ether ND 10 " " HT-04,R-05 <br /> Surrogate 11-DCA-d4 131 % 60-140 " HT-04 R-05 <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 stated results are reported on a wet weight basis <br /> 0 This analytical report must be reproduced in its entirety <br /> 8 of 17 <br />