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45) 8Hi Jarvis Drive <br /> Sequoia Morgan HdlCA 95037 <br /> (408)776 9600 <br /> qW Analytical FAX(408)782-6308 <br /> www sequotalabs corn <br /> URS Corporation[Arcola Project ARCO#6100,Tracey,CA MOL0796 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number GOC 1 Y-0005 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 01/16/06 16 27 <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 /> MW4(MOL0796-02RE1)Water Sampled 12/19/05 11 09 Received 12/20/05 08 15 CL <br /> Xylenes(total) 390000 1000 ug/I 2000 6AO3003 01/03/06 01/03/06 EPA 8260E <br /> Gasoline Range Organics(C4-C12) 2900000 100000 " <br /> Surrogate 12-Dtchloroethane-d4 105% 60-135 " <br /> MW-8(MOL0796-03)Water Sampled 12/19/05 11 21 Received 12/20/0508 15 <br /> tert-Amyl methyl ether ND 250 ug/I 500 5L28007 12/28/05 12/28/05 EPA 8260B <br /> Benzene 290 250 " <br /> tert-Butyl alcohol ND 10000 " <br /> Di-isopropyl ether ND 250 " <br /> 1,2-Dtbromoethane(EDB) ND 250 " <br /> 1,2-Dtchloroethane ND 250 " <br /> Ethanol ND 50000 " <br /> Ethyl tert-butyl ether ND 250 " <br /> Ethylbenzene 560 250 " <br /> eyl tert-butyl ether ND 250ne 1400 250 <br /> Xylenes(total) 24000 250 " <br /> Gasoline Range Organics(C4-C12) 240000 25000 " <br /> Surrogate 1,2-Dtchloroethane-d4 70% 60-135 <br /> MW-10(MOL0796-04)Water Sampled 12119/051030 Received 12/20/05 08 15 <br /> tert-Amyl methyl ether ND 25 ug/I 50 5L29003 12/29/05 12/29/05 EPA 8260B <br /> Benzene 2700 25 " <br /> tert-Butyl alcohol ND 1000 " <br /> Di-isopropyl ether ND 25 " <br /> 1,2-Dtbromoethane(EDB) ND 25 " <br /> 1,2-Dtchloroethane 37 25 " <br /> Ethanol ND 5000 " <br /> Ethyl ten-butyl ether ND 25 " <br /> Ethylbenzene 140 25 " <br /> Methyl tert-butyl ether ND 25 " <br /> Toluene 1100 25 " <br /> Xylenes(total) 3900 25 " <br /> Gasoline Range Organics(C4-C12) 31000 2500 " <br /> Surrogate 12-Dtchloroethane-d4 78% 60-135 <br /> uo1a Analytical -Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> 16 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 19 <br />