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J 885 Jarvis Drive <br /> Sequoia Morgan(40Hilt,CA95037 <br /> (408)776-9600 <br /> FAX(408)782-6308 <br /> Analytical °°Wabs.wm <br /> URS Corporation h) Project: ARCO--434 MLJ0673 <br /> 2870 Gateway Oaks Dr.,Ste 300 Project Number: ARCO u434 Reported: <br /> Sacramento CA,95833 Project Manager: VemElarth 11/12/0214:57 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> PB-5(MLJ0673-05)Soil Sampled: 10/22/02 12:05 Received: 10/22/02 16:30 <br /> Total Xylenes ND 1.4 ug/kg 2.8199999 2128036 10/28/02 10/29/02 EPA 8260B <br /> Benzene NO 1.4 " <br /> Ethylbenzene ND 1.4 " <br /> Toluene ND 1.4 _ <br /> Surrogate:DibromoJluoromethane 106% 60-140 <br /> Surrogate: 1,2-Dichloroethane-d4 105% 60-140 " <br /> Surrogate: Toluene-d8 84.4% 60-140 " <br /> Surrogate.' 4-BromoJluorobenzene 92.8% 60-140 " <br /> tert-Butyl alcohol ND 56 2.8199999 0-10 <br /> Methyl tert-butyl ether ND 1.4 " <br /> Di-isopropyl ether ND 1.4 " <br /> Ethyl tert-butyl ether ND 1.4 " <br /> tert-Amyl methyl ether ND 1.4 " <br /> Surrogate: 1,2-Dichloroethane-d4 105% 60-140 " <br /> PB-6(MLJ0673-06)Soil Sampled: 10/22/02 12:10 Received: 10/22/02 16:30 <br /> Total Xylenes ND 1.6 ug/kg 3.2100000 2128036 1028/02 1029/02 EPA 82608 <br /> Benzene NO 1.6 " <br /> Ethylbenzene ND 1.6 " <br /> Toluene ND 1.6 " <br /> Surrogate:Dibromojluoromethane 98.4% 60-140 " <br /> Surrogate: 1,2-Dichloroethane-d4 101 % 60-140 " <br /> Surrogate: Toluene-d8 83.0% 60-140 " <br /> Surrogate. 4-Bromofluorobenzene 95.2% 60-140 " <br /> 11 <br /> tert-Butyl alcohol 1600 64 000003814 0-10 <br /> Methyl tert-butyl ether ND 1.6 " <br /> Di-isopropyl ether ND 1.6 " <br /> Ethyl tert-butyl ether ND 1.6 " <br /> tert-Amyl methyl ether ND 1.6 <br /> Surrogate: 1,2-Dichloroethane-d4 101 % 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. This analytical report must be reproduced in its entirety. <br /> 8of15 <br />