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1455 McDowell Blvd.North,Ste,D Sequoia Petaluma,CA 94954 (707)792-1865 FAX(707)792-034 Analytical www.sequoialabs.co Cambria Environmental-Emeryville Project: Equiva 6262 Hollis Street Project Number: 340 E.Main St.,Ripon.Ca. Reported: Emeryville CA,94608 Project Manager: Owen Ratchye 01/11/0I 14:23 Volatile Organic Compounds by EPA Method 82605 Sequoia Analytical - Petaluma Reporting AnalyteResult Limit Units Dilution Batch Prepared Analyzed Method Notes B-1 (P012216-03)Water Sampled: 12/08/00 00:00 Received: 12/11/00 11:30 Cert-amyl methyl ether ND 1.00 ug/l 1 0120275 12/13/00 12/13/00 EPA 8260B Benzene ND 0.500 " " " Pert-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 " ^ 3thylbenzene ND 0.500 ^ Ethyl tert-butyl ether ND 1.00 " Aethyl tert-butyl ether ND 0.500 ^ " Toluene ND 0.500 ^ ~ Kylenes(total) ND 0.500 ^ " Surrogate:Dibromofluoromethane 98,4% 88-118 to " surrogate: 1,2-Dichloroethane-d4 109% 81-130 " It Surrogate: Toluene-d8 103% 84-115 Surrogate:4-Bromofluorobenzene 114% 78-124 E-1 (P012216-04)Water Sampled: 12/08/00 00:00 Received: 12/11/00 11:30 rert-amyl methyl ether ND 1.00 ug/l 1 0120275 12/13/00 12/13/00 EPA 8260B Benzene ND 0.500 " rert-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 tent-butyl ether ND 0.500 " Toluene ND 0.500 Ysylenes(total) ND 0.500 Surrogate:Dibromofluoromethane 99.0% 88-118 " Surrogate: 1,2-Dichloroethane-d4 110% 81-130 " Surrogate: Toluene-d8 104% 84-115 Surrogate:4-Bromofluorobenzene 111 % 78-124 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.