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Drive <br /> Sequoia 885 <br /> HIIII vis 5037 <br /> Morgan Hil] CA 95037 <br /> (408)776 9600 <br /> Analytical FAX(408)7926308 <br /> www sequota)abs com <br /> URS Corporation[Arco I J Project ARCO 45469,Stockton,CA MPF0114 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number GOBZP-0010 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 06/30/06 11 12 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- Morgan Hill <br /> Reporting <br /> Analyte Resull Limit Units DBuuon Batch Prepared Analyzed Method Note <br /> MW-7(MPF0114-07)Water Sampled 05/30/06 03 50 Received 05/31/06 08 30 <br /> tert-Amyl methyl ether ND 050 ugll I 6FO7022 06/07/06 06/08/06 EPA 8260B <br /> Benzene ND 050 <br /> tert-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 0 50 " <br /> 1,2-Dibromoethane(EDB) ND 0 50 " <br /> 1,2-Drchloroethane ND 050 <br /> Ethanol ND 300 <br /> Ethyl tert-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tent-butyl ether ND 0 50 <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C4-C 12) ND 50 <br /> rrogaie 12-Drchloroethane-d4 89% 60-143 " <br /> rogate Toluene-d8 93% 70-130 <br /> urrogate Debromofluoromethane 95% 75-130 " <br /> Surrogate 4-Bromofluorobenzene 94% 60-115 " <br /> MW-8(MPF0114-08)Water Sampled 05/30/06 04 30 Received 05/31/06 08 30 <br /> tert-Amyl methyl ether ND 25 ug/I 50 6FO801 1 06/08/06 06/09/06 EPA 82608 <br /> Benzene ND 25 " <br /> tert-Butyl alcohol ND 1000 <br /> Di-isopropyl ether ND 25 <br /> 1,2-Dibromoethane(EDB) ND 25 <br /> 1,2-Drchloroethane ND 25 " <br /> Ethanol ND 15000 <br /> Ethyl tert-butyl ether ND 25 <br /> Ethylbenzene ND 25 " <br /> Methyl tart-butyl ether 4000 25 " <br /> Toluene ND 25 <br /> Xylenes(total) ND 25 " <br /> Gasoline Range Organics(C4-Cl2) 3500 2500 " <br /> Surrogate 1 2-Drchloroethane-d4 94% 60-145 <br /> Surrogate Toluene-d8 90% 70-130 <br /> Surrogate Dibromofluoromethane 93% 75-130 <br /> Surrogate 4-Brornofluorobenzene 92% 60-115 <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 staled results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 7 of 20 <br />