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$$5 Jarvis Drive <br /> Sequoia Morgan Hill CA 950375037 <br /> (408)776 9600 <br /> Analytical FAX(408)792-6308 <br /> www sequoialabs cum <br /> 7URS Corporation [Arcot) Project ARCO#6100,Tracey,CA MPC I 103 <br /> 2870 Gateway Oaks Dr Ste 300 Project Number GOC I Y-0015 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 04/23/06 11 43 <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 /> VW-3(MPCI103-09)Water Sampled 03128/060832 Received 03/29/06 07 45 <br /> tert-Amyl methyl ether ND 50 ug/l 100 6DI1008 04/11/06 04/11/06 EPA 8260B <br /> Benzene 96 50 " " <br /> tert-Butyl alcohol ND 2000 <br /> Di-isopropyl ether ND 50 " <br /> 1,2-Dibromoethane(EDB) ND 50 <br /> 1,2-Dichloroethane ND 50 " <br /> Ethanol ND 30000 " <br /> Ethyl tert-butyl ether ND 50 " <br /> Ethylbenzene ND 50 " <br /> Methyl tert-butyl ether ND 50 " <br /> Toluene ISO 50 " <br /> Xylenes(total) 7600 50 " <br /> Gasoline Range Organics(C4-C12) 29000 5000 " <br /> Surrogate 1 2-Dtchloroethane-d4 90% 80-135 <br /> aToluene-d8 93% 70-130 <br /> *gte <br /> gate Dibromofluoromethane 94% 85-130 <br /> Surrogate 4-Bromofluorobenzene 92% 60-115 " <br /> VW-5(MPC1103-10)Water Sampled 03/28/060957 Received 03/29/06 07 45 <br /> tert-Amyl methyl ether ND 050 ug/1 I 6D11008 04/11/06 04/11/06 EPA 8260B <br /> Benzene ND 050 " <br /> tert-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 050 " <br /> 1,2-Dtbromoethane(EDB) ND 050 " <br /> 1,2-Dtchloroethane ND 050 " <br /> Ethanol ND 300 <br /> Ethyl ten-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert-butyl ether ND 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) 0 50 050 " <br /> Gasoline Range Organics(C4-C12) ND 50 " <br /> Surrogate 1 1-Dtchloroethane-d4 93% 80-135 <br /> Surrogate Toluene-d8 98% 70-130 IF <br /> Surrogate Dtbromojluoromethane 99% 85-130 " <br /> Surrogate 4-Bromofluorobenzene 91 % 60-115 <br /> uoia Analytical-Morgan Hill The results in this report apply to the samples analy_ed 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 1 I <br />