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1455 McDowell Blvd.North,Ste,D <br /> Sequoia Petaluma,CA 94954 <br /> (7D7))792-1865-1865 <br /> Analytical wFAX(707)792-0342 <br /> wwsequoialabs.cam <br /> Cambria Environmental- Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 341 East Main Street,Ripon Reported: <br /> Emeryville CA,94608 Project Manager: Owen Rastchye 11/01/00 16:18 <br /> Volatile Organic Compounds by EPA Method 8260B -Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 0100718-EPA 5030 waters <br /> Blank(0100718-BLK1) Prepared&Analyzed: 10/28/00 <br /> Tert-amyl methyl ether ND T 1.00 ug/l <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 IND 0.500 <br /> Ethyl teri-butyl ether IND 1.00 " <br /> Methyl tert-butyl ether ND 0.500 " <br /> Toluene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> ogate.Dibroinofluoromethane - - 4.58 --- - - 5.00 91.6�88-118 - <br /> rogate: l,2-Dichloroethane-d4 4.39 5.00 87.8 81-130 <br /> Surrogate: Toluene-d8 4.79 5.00 95.8 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.49 5.00 89.8 78-124 <br /> Blank(0100718-BLK2) Prepared&Analyzed: 10/31/00 <br /> Tett-amyl methyl ether ND Loo ug/l <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:Dibromofluoromethane 4.68 5.00 93.6 88-118 <br /> Surrogate: 1,2-Dichloroethane-d4 4.82 5.00 96.4 81-130 <br /> Surrogate: Toluene-d8 4.88 5.00 97.6 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.92 5.00 98.4 78-124 <br /> quoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> 152, <br /> Page 8 of 13 <br />