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1 1455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma,CA 94954 <br /> (707)792-1865 <br /> Analytical <br /> FAX(707)792-0342 <br /> •Q www sequoialabs corn <br /> URS Corp-Sacramento Project Arco Site 760,Lodi,CA P403600 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number G09JZ-0039 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 04/08/04 14 36 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Petaluma <br /> Reporting <br /> Analyte Result Lunit Units Dilution Batch Prepared Analyzed Method Notes <br /> B-25-60(P403600-06)Soil Sampled 03/22/04 11 00 Received 03/25/0411 00 <br /> Tert-amyl methyl ether ND 00050 mg/kg 1 4040052 04102104 04/02/04 EPA 8260B <br /> Benzene ND 00050 <br /> Tert-butyl alcohol ND 010 <br /> Di-isopropyl ether ND 00050 <br /> 1,2-Dibromoethane(EDB) ND 00050 " <br /> 1,2-Dichloroethane ND 00050 " <br /> Ethanol ND 020 " <br /> Ethylbenzene ND 00050 „ <br /> Ethyl tert-butyl ether ND 00050 " <br /> Methyl tert-butyl ether ND 00050 <br /> Toluene ND 00050 " <br /> Xylenes(total) ND 00050 <br /> Surrogate Dibromofluoromelhane 96% 81-126 <br /> Surrogate 1 2-Dichloroethane-d4 100% 73-131 <br /> 9*rrogate Toluene-d8 103% 82-129 <br /> 25W(P403600-07)Water Sampled 03/22/0411 30 Received 03/25!0411 00 <br /> Ten-amyl methyl ether ND 10 ug/I 1 4040042 04/02/04 04/02/04 EPA 8260B <br /> Benzene ND 050 <br /> Tert-butyl alcohol ND 20 " <br /> Di-isopropyl ether ND to " <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> 1,2-Dichloroethane 13 050 " <br /> Ethanol ND 100 " <br /> Ethylbenzene ND 050 <br /> Ethyl tert-butyl ether ND 10 <br /> Methyl tert-butyl ether ND 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate Dibromofluoromethane 105% 84-122 „ <br /> Surrogate 12-Dichloroethane-d4 112% 74-135 <br /> Surrogate Toluene-d8 103% 84-119 " <br /> Surrogate 4-Bromofluorobenzene 107% 86-119 <br /> Sequoia Analytical-Petaluma 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 analyncal report must be reproduced in its entirety <br />' Page 5 of 18 <br />