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IN r <br /> 1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petaluma,CA 94954 <br /> (707)792-1865 <br /> Analytical FAX(707)792-0392 <br /> www.sequoialabs.com <br /> Cambria Environmental-Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 341 East Main St,Ripon Reported: <br /> Emeryville CA,94608 Project Manager: Owen-Ratchye 02/12/01 17:31 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Balch Prepared Analyzed Method Notes <br /> 1 1 (P102118-01)Water Sampled: 02/02/01 12:00 Received: 02/06/01 16.30 <br /> Tert-amyhmethyl:ether ND 2.00—ug/1 2 1020164=02107101�02/08/01�EPA-.82608 <br /> Benzene ND 1.00 " <br /> Tert-butyl alcohol ND 40.0 " <br /> Di-isopropyl ether ND 2.00 " <br /> 1,2-Dibromoethane(EDB) ND 1.00 " <br /> 1,2-Dichloroethane ND 1.00 " <br /> Ethanol ND 200 " <br /> Ethylbenzene ND 1.00 " <br /> Ethyl tert-butyl ether ND 2.00 " <br /> Methyl tert-butyl ether 81.6 1.00 <br /> Toluene ND 1.00 <br /> Xylenes(total) ND 1.00 " <br /> Surrogate. Dibromofluoromethane 111 % 88-118 " <br /> Surrogate: 1,2-Dichloroethane-d4 124% 81-130 <br /> Surrogate: Toluene-d8 96.8% 84-115 " <br /> Surrogate:4-Bromofluorobenzene 110% 78-124 " <br /> A 1 (P102118-02)Water Sampled:02/02/01 12:00 Received:02/06/01 16:30 <br /> Tert-amyl methyl ether ND 1.00 ugll 1 1020188 02/08/01 02/08/01 EPA 82606 <br /> Benzene ND 0.500 " <br /> Tert-butyl alcohol ND 20.0 " <br /> Di-isopropyl ether ND 1.00 " <br /> 1,2-Dibromoethane(EDB) ND 0.500 " <br /> 1,2-Dichloroethane ND 0.500 " <br /> Ethanol ND 100 " <br /> Ethylbenzene ND 0.500 " <br /> Ethyl tent-butyl ether ND 1.00 " <br /> Methyl tert-butyl ether ND 0.500 <br /> Toluene ND 0.500 <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:Dibromofluoromethane 108% 88-118 " <br /> Surrogate: 1,2-Dichloroethane-d4 118% 81-130 " <br /> Surrogate: Toluene-d8 98.2% 84-115 " <br /> Surrogate: 4 Bromofluorobenzene 109% 78-124 " <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 3 of 9 <br />