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i <br /> 885 Jarvis Drive <br /> Morgan Hill CA 95037 <br /> � (408)776-4600 <br /> ��N+{"��p FAX(408)7826308 <br /> U. It www sequoialabs coin <br /> URS Corporation IArcoII Project BP Heritage#11194,Tracy,CA MPA1469 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number G07WZ-0011 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 02/13/06 15 39 <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 Note <br /> AMW-6(MPA1469-03)Water Sampled 01/26/06 15 45 Received 01/28/06 08 30 <br /> tert-Amyl methyl ether ND 050 ugll 1 6807008 02/07/06 02/08/06 EPA 82608 <br /> Benzene ND 050 " <br /> tert-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 050 " <br /> Ethanol ND 300 " <br /> Ethyl tent-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert-butyl ether 2 2 050 " <br /> Toluene ND 0 50 " <br /> Xylenes(total) ND 0 50 <br /> Gasoline Range Organics(C4-C12) ND 50 <br /> Surrogate 12-Dichloroethane-d4 90% 60-135 <br /> MW-4(MPA1469-04)Water Sampled 01/26/06 16 15 Received 01/28/06 08 30 <br /> Ort-Amyl methyl ether ND 050 ug/l 1 6BO7008 02/07/06 02/08/06 EPA 8260B <br /> enzene ND 050 <br /> tert-Butyl alcohol ND 20 " <br /> Dl-isopropyl ether ND 050 <br /> Ethanol ND 300 " <br /> Ethyl tert-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert-butyl ether 5 0 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasohne Range Organics(C4-02) 240 50 " <br /> Surrogate 1,2-Dichloroethane-d4 97% 60-135 " <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 /> This analytical report must be reproduced in its entirety <br /> Page 4 of 10 <br />