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ilii w <br /> 1455 McDowell Blvd.North,Ste.D <br /> D Sequoia Petaluma, 79 94954 <br /> -1865 <br /> 4 (707)792-1865 <br /> FAX(707)792-0342 <br /> Analyticalwww.sequoialabs.corn <br /> Cambria Environmental-Oakland Project: Equiva <br /> 1144 65th St.,Suite C Project Number: 341 E. Main Street,Ripon [reported: <br /> Oakland CA,94608 Project Manager: Darryk Ataide , 10/11/00 16:59 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> 1-1 (P010072-01)Water Sampled: 10/04/00 08:00 Received: 10/04/00 14:50 <br /> Tert:amyl.methy_I.ether ND 20.6 ug/l 20 0100227 10/10/00 10/10/00 EPA 8260B <br /> Ter -butyl alcohol ND 404 " <br /> Di-isopropyl ether ND 20.0 " <br /> Ethanol ND 2000 " <br /> Ethyl tert-butyl ether ND 20.0 " <br /> Methyl tert-butyl ether 20.5 0.500 l <br /> Surrogate:Dibromofluoromethane 101 % 88-118 " <br /> Surrogate: 1,2-Dichloroethane-d4 91.2% 81-130 " <br /> Surrogate: Toluene-d8 Ill % 84-115 " <br /> A-1 (P010072-02)Water Sampled: 10/04/00 08:00 Received: 10/04/00 14:50 <br /> Tert-amyl methyl ether ND 1.00 ug/i 1 0100227 10/10/00 10/10/00 EPA 8260B <br /> Tert-butyl alcohol ND 20.0 " <br /> Di-isopropyl ether ND 1.00 " <br /> Ethanol ND 104 <br /> Ethyl tert-butyl ether ND 1.00 " <br /> Methyl tert-butyl ether ND 0.500 <br /> Surrogate:Dibromofluoromethane 111 % 88-118 " " <br /> Surrogate: 1,2-Dichloroethane-d4 99.8% 81-130 " <br /> Surrogate: Toluene-d8 I11 % 84-115 " <br /> B-1 (P010072-03)Water Sampled: 10/04/00 08:00 Received: 10/04/00 14:50 <br /> Tert-amyl methyl ether ND 1.00 ug/l l 0100227 10/10/00 10/10/00 EPA 8260B <br /> Tert-butyl alcohol ND 20.0 " <br /> Di-isopropyl ether ND 1.00 " <br /> Ethanol ND 104 " <br /> Ethyl tert-butyl ether ND 1.00 " <br /> Methyl tert-butyl ether ND 0.500 " <br /> Surrogate:Dibromofluoromethane 109% 88-118 " <br /> Surrogate: 1,2-Dichloroethane-d4 99.0% 81-130 " <br /> Surrogate: Toluene-d8 112% 84-115 " <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain o� <br /> custody document. This analytical report must be reproduced in its entirely. <br /> Page 4 of 9 <br />