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I • U1, 885 Jarvis Drive ' Sequoia Morgan Hill,CA 95037 (408)776-9600 S FAX(4081 782-6308 Analytical I+ www.sequoialabs.com URS Corporation f 11 Project: ARCO#434 ML30673 2870 Gateway Oaks Dr.,Ste 300 Project Number: ARCO#434 Reported: Sacramento CA,95833 Project Manager: Vern Elarth 11/12/02 14:57 Volatile Organic Compounds by EPA Method 8260B Sequoia Analytical-Morgan Hill Reporting i Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes 11 PB-1 (MLJ0673-01)Soil Sampled: 10/22/02 11:40 Received: 10/22/02 16:30 I Total Xylenes ND 1.1 ug/kg 2.2599999 2328036 10/28/02 10/28/02 EPA 8260B Benzene ND 1.1 Ethylbenzene ND 1.1 " Toluene ND 1.1 " Surrogate:Dibromofluoromethane 109% 60-140 " Surrogate: 1,1-Dichloroethane-d4 98.0% 60-140 " Surrogate: Toluene-d8 85.0% 60-140 " Surrogate:4-Bromofluorobenzene 964% 60-140 " tert-Butyl alcohol ND 45 2.2599999 0-I0 Methyl tert-butyl ether ND 1.1 " Di-isopropyl ether ND 1.1 " Ethyl tert-butyl ether ND 1.1 " tert-Amyl methyl ether ND 1.1 Surrogate: 1,2-Dichloroethane-d4 98.0% 60-140 PB-2(MLJ0673-02)Soil Sampled: 10/22/02 11:45 Received: 10/22/02 16:30 Total Xylenes ND 1.4 ug/kg 2.7200000 2328036 10/28/02 10/28/02 EPA 8260B Benzene ND 1.4 " Ethylbenzene ND 1.4 " Toluene ND 1.4 " Surrogate:Dibromofluoromethane 106% 60-140 " Surrogate: 1,2-Dichloroethane-d4 103% 60-140 " Surrogate: Toluene-d8 89.8% 60-140 " Surrogate:4-Bromofluorobenzene 95.8% 60-140 I tent-Butyl alcohol ND 54 2.7200000 " „ 0-10 Methyl tert-butyl ether ND 1.4 Di-isopropyl ether ND 1.4 Ethyl ten-butyl ether ND tert-Amyl methyl ether ND 1.4 " Surrogate: 1,2-Dichloroethane-d4 103% 60-140 " I I i i i Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of custody document. 7 his analytical report must be reproduced in its entirety. 6of15