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F � <br /> � Sequoia 883 Jarvis Drive <br /> �,,��] Morgan Hill,CA 95037 <br /> (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> www.sequoialabs.com <br /> URS Corporation[Arcot] Project.ARCO#2130,Stockton,CA MOI0544 <br /> 2870 Gateway Oaks Dr.,Ste 300 Project Number:GOBZK-0002 Reported: <br /> Sacramento!CA,95833 Project Manager:Vernon P.Elarth 09/29/05 14:23 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Morgan Hill <br /> Reporting <br /> Analy1eResult Limit Units Dilution Batch Prepared Analyzed Method Not <br /> r <br /> VW-7(MO16544-13)Water Sampled:09/12/05 09:10 Received:09/14/05 08:55 <br /> tert-Amyl methyl ether ND 0.50 ug/l 1 5123007 09/23/05 09/23/05 EPA 8260B <br /> Benzene ND 0.50 <br /> tert-Butyl alcohol ND 20 <br /> Di-isopropyl ether ND 0.50 ^ <br /> 1,2-Dichloroethane 15 0.50 ^ <br /> Ethanol ND 1-00 <br /> Ethyl tert-butt''I ether ND 0.50 ^ <br /> Ethylbenzenei ND 0.50 <br /> Methyl tert-butyl ether 0.93 0.50 ^ " <br /> Toluene ND 0.50 <br /> Xylenes(total) ND 0.50 " <br /> Gasoline Range Organics(C4-C12) ND 50 " <br /> Surrogale:1,2-Dichloroethane-d4 79% 60-135 " <br /> p <br /> ,.-4VW-8(MOI0544-14)Water Sampled:09/11/05 08:45 Received:09/14/05 08:55 <br /> %MW;crt-AmyI methyl ether ND I2 ug/l 25 5123007 09/23/05 09/23/05 EPA 8260B <br /> Benzene 18 12 " <br /> tert-Butyl alcohol ND 500 " " <br /> Di-isopropyl ether ND 12 " <br /> 1,2-Dichloro6hane ND 12 " <br /> Ethanol ND 2500 " <br /> Ethyl tert-butyl ether ND 12 " <br /> Ethylbenzene 32 12 " <br /> Methyl tert-butyl ether ND 12 " <br /> Toluene ND 12 " <br /> Xylenes(total) 80 12 " <br /> Gasoline Range Organics(C4-C12) 7200 1200 " <br /> Surrogate:1,2-Dichlaroelhane-d4 83% 60-135, " <br /> f <br /> =4 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> a' custody document.Unless otherwise stated,results are reported on a we/weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 9 of 25 <br /> 0 <br /> r <br />