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p 1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petaluma,CA 94954 <br /> (707)792-1865 <br /> FAX.Analytical ww. (707)www.sequoialabs.com wwwsequoialabs.com <br /> -0 <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 02/01/01 16:12 <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 (P101757-01)Water Sampled: 01/26/01 00:00 Received: 01/30/01 11:20 <br /> Tent-amyl methyl ether ND 4.00 ug/l 4 1010661 01/31/01 01/31/01 EPA 8260B <br /> Benzene ND 2.00 " <br /> Tert-butyi alcohol ND 80.0 " <br /> Di-isopropyl ether ND 4.00 " <br /> 1,2-Dibromoethane(EDB) ND 2.00 " <br /> 1,2-Dichloroethane ND 2.00 " <br /> Ethanol ND 400 " <br /> Ethylbenzene ND 2.00 <br /> Ethyl ter(-butyl ether ND 4.00 " <br /> Methyl tert-butyl ether 72.8 2.00 " <br /> Toluene ND 2.00 <br /> Xylenes(total) ND 2.00 " <br /> Surrogate:Dibromofluoromethane 106% 88-118 <br /> Surrogate: 1,2-Dichloroethane-d4 107% 81-130 " <br /> Surrogate: Toluene-d8 96.8% 84-115 <br /> Surrogate: 4-Bromofluorobenzene 102% 78-124 " <br /> A-1 (P101757-02)Water Sampled: 01126/0100:00 Received:01/30/01 11:20 <br /> Tert-amyl methyl ether ND 1.00 ug/l 1 1010661 01/31/01 01/31/01 EPA 8260B <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 tert-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:Dibromofluoromeihane 103% 88-118 " <br /> Surrogate: l,1-Dichloroethane-d4 1101 81-130 <br /> Surrogate: Toluene-d8 96.2% 84-115 " <br /> Surrogate: 4-Bromofluorobenzene 102% 78-124 " <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain 016 <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 3 of 8 <br />