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J, % <br /> E <br /> 1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petaluma,CA 94954 <br /> (707)07)792-1865-1865 <br /> 41) <br /> FAX(707)792-0342 <br /> ,%„f Analytical www.sequoialabs.corn <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 Rastchye 11/20/00 10:41 <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-0110434=EP-A.5030 waters <br /> Blank(011043_4-BLK1) Prepared&Analyzed: 11/16/00 <br /> Tert-amyl methyl ether ND 1.00 ugtl <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 Cert-butyl ether ND 0.500 " <br /> Toluene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:Dibromofluoromelhane 5.10 5.00 101 88-118 <br /> Surrogate: 1,2-Dichloroethane-d4 4.89 5.00 97.8 81-130 <br /> Surrogate: Toluene-d8 4.96 5-00 99.1 84-115 <br /> Surrogate:4-Bromofluorobenzene 5.18 5.00 106 78-124 <br /> Blank(01104_34-BLK3) Prepared&Analyzed: 11/17/00 <br /> Tert-amyl methyl ether ---_-------_---��-�� ND 1.00 ugll — -- —�� <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 4.66 5.00 93.1 88-118 —� <br /> Surrogate: 1,2-Dichloroethane-d4 4.23 5.00 84.6 81-130 <br /> Surrogate: Toluene-d8 4.84 5.00 96.8 84-115 <br /> Surrogate. 4-Bromofluorobenzene 5.31 5.00 106 78-114 <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 entirety. <br /> Page 7 of 9 <br />