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1455 McDowell Blvd.North,Ste.D 94954 Sequoia Petaluma, 79 -1865 (747)792-1865 FAX(707)792-0342 Analytical www.sequoialabs.com Cambria Environmental-Emeryville Project: Equiva 6262 Hollis Street Project Number: 341 East Main St,Ripon Reported: Emeryville CA,94608 Project Manager: Owen Ratchye 01/03/01 15:01 Volatile Organic Compounds by EPA Method 8260B Sequoia Analytical - Petaluma Reporting u,alyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes 3 1 (P012519-03)Water Sampled: 12/20/00 00:00 Received: 12/21/00 13:00 Vert-amyl methyl ether ND 1.00 ug/l 1 0120618 01/02/01 01/03/01 EPA 8260B 3enzene ND 0.500 " t'ert-butyl alcohol ND 20.0 " )i-isopropyl ether ND 1.00 " 2-Dibromoethane(EDB) ND 0.500 " ,2-Dichloroethane ND 0.500 " 3thanol ND 100 ithylbenzene ND 0.500 " :thyl tert-butyl ether ND 1.00 (ethyl tert-butyl ether ND 0.500 " Toluene ND 0.500 " <ylenes(total) ND 0.500 " surrogate:Dibromofluoromethane 101 % 88-118 surrogate: 1,1-Dichloroethane-d4 109% 81-130 " surrogate: Toluene-d8 101 % 84-115 " 4urrogafe:4-Bromofluorobenzene 111 % 78-124 " I E 1 (P012519-04)Water Sampled: 12/20/00 00:00 Received: 12/21/00 13:00 Tett-amyl methyl ether ND 1.00 ug/1 1 0120618 01/02/01 01/03/01 EPA 8260B Benzene ND 0.500 Tert-butyl alcohol ND 20.0 " Di-isopropyl ether ND L00 " 1,2-Dibromoethane(EDB) ND 0.500 " 1,2-Dichloroethane ND 0.500 " Ethanol ND 100 " Ethylbenzene ND 0.500 " Ethyl tert-butyl ether ND 1.00 " Methyl tert-butyl ether ND 0.500 " Toluene ND 0.500 " Xylenes(total) ND 0.500 " Surrogate:Dibromofluoromethane 104% 88-118 " Surrogate: 1,2-Dichloroethane-d4 111 % 81-130 " " Surrogate: Toluene-d8 102% 84-115 Surrogate:4-Bromofluorobenzene Ill % 78-124 " i Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety.