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1 , 1455 McDowell Blvd.North,Ste.D 4954 Sequoia Petal 07)792ma,CA91865 FAX(707)792-0342 Analytical www.sequoialabs.corn 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 Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes 1 (P012519-01)Water Sampled: 12/20/00 00:00 Received: 1212110013:00 f ert-amyl methyl ether ND 4.00 ug/l 4 0120618 01/02/01 01/02/01 EPA 8260B 3enzene ND 2.00 " Pert-butyl alcohol ND 80.0 " )i-isopropyl ether ND 4.00 " .,2-Dibromoethane(EDB) ND 2.00 " ,,2-1)ichloroethane ND 2.00 " :thanol ND 400 " ?thylbenzene ND 2.00 ?thyl tert-butyl ether ND 4.00 " Methyl tert-butyl ether 113 2.00 Foluene ND 2.00 " AWkIenes(total) ND 2.00 " -mmrrogare:Dibromofluoromethane 108% 88-118 lo" Surrogate: 1,2-Dichloroethane-d4 117% 81-130 " Surrogate: Toluene-d8 98.6% 84-115 " Surrogate_•4-Bromofluoroberzene 109% 78-124 " A 1 (P012519-02)Water Sampled: 12/20/00 00:00 Received: 12/21/00 13:00 Pert-amyl methyl ether ND 1.00 ug/l 1 0120618 01/02/01 01/03/01 EPA 8260B Benzene ND 0.500 " Tert-butyl alcohol ND 20.0 " Di-isopropyl ether ND 1.00 " 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 97.8% 88-118 " Surrogate: 1,2-Dichloroethane-d4 111 % 81-130 " Surrogate: Toluene-d8 102% 84-115 " Surrogate:4-Bromofluorobenzene 112% 78-124 " s 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.