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885 Jarvis Drive <br /> Sequoia Morgan Hill,CA 9550377 <br /> (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> www sequoialabs com <br /> • <br /> URS Corporation[Arco I Project BP Heritage#1 1191,Stockton,CA MO31397 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number G07WW-00I6 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 11110105 12 50 <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 No <br /> MW-1 (MOJ1397-01)Water Sampled 10/25/05 10 35 Received 10/27/05 07 55 <br /> tert-Amyl methyl ether ND 050 ug/l 1 SK04010 11104/05 11/04/05 EPA 8260B <br /> Benzene ND 050 <br /> tert-Butyl alcohol ND 20 <br /> Di-isopropyl ether ND 050 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 050 <br /> Ethylbenzene ND 050 <br /> Methyl tert-butyl ether 45 050 <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C4-C12) 53 50 " ^ PV <br /> Surrogate 1 2-Dichloroethane-d4 101 % 60-135 " <br /> MW-2(MOJ1397-02)Water Sampled 10/25/0510 20 Received 10/27/05 07 55 <br /> rt-Amyl methyl ether ND 25 ug/I 50 5K07004 11/07/05 11/07/05 EPA 8260B <br /> enzene ND 23 <br /> tert-Butyl alcohol ND 1000 <br /> Di-isopropyl ether ND 25 <br /> Ethanol ND 5000 " " IC <br /> Ethyl tert-butyl ether ND 25 " <br /> Ethylbenzene ND 25 " <br /> Methyl tert-butyl ether 3700 25 " <br /> Toluene ND 25 <br /> Xylenes(total) ND 25 <br /> Gasoline Range Organics(C4-C12) 2600 2500 " PV <br /> Surrogate 1 2-Dtchloroethane-d4 92% 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 he reproduced in its entirety <br /> Page 3 of]1 <br />