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885 Jarvis lh <br /> Sequoia Margm Ht0,CA 95037 <br /> O 776-9600 <br /> Analytical FAX(08)782-6308 <br /> www seguoialabs 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 Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> VW-5 L0779-0Water Sampled-12/19/02 07 53 Received 12/19/02 15 55 <br /> Tert-butyl alcohol 16 5 0 ug/l 1 3010011 01/07/03 01/02/03 EPA 8260B <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(ML,L0779-06)Water Sampled 12/19/021248 Received 12/19/02 15 55 <br /> Tert-butyl alcohol 77 5 0 ug/1 1 3010011 01/02/03 01/02/03 EPA 8260B <br /> Methyl tert butyl ether 11 050 " " " <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 102% 60-140 <br /> ANNIM-8 L0779-07 Water Sampled 12/19/02 09 13 Received 12/19/0215 55 <br /> ert-butyl alcohol ND 10 ug/1 2 3010011 01/02/03 01/04/03 EPA 8260B A-10,HT-RS, <br /> R-05 <br /> Methyl tert-butyl ether ND 10 " " A-10,HT-RS, <br /> R-05 <br /> Di-isopropyl ether ND to A-I0,HT-RS, <br /> R-05 <br /> Ethyl tert-butyl ether ND 10 A-10,14T-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-10 HT-RS <br /> R-05 <br /> VW-10 LL0779-08 Water Sam led 12/19/02 08 30 Received 12/19/02 15 55 <br /> Tert-butyl alcohol ND 100 U84 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 tort-butyl ether ND 10 HT-04,11-05 <br /> Tert-amyl methyl ether ND 10 " " " „ HT-04,11-05 <br /> Surrogate 1,2-DCA-d4 131% 60-140 " HT-04 R-05 <br /> ofequoia 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 /> This analytical report must be reproduced in its entirety <br /> 8 of 17 <br />