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1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petaluma,CA 9 <br /> 4954 <br /> (70)7sz-1865labs <br /> FAX(707)792-0342 <br /> Analytical www•sequoialabs.com <br /> Cambria Environmental-Emeryville Project: Equiva <br /> Project Number: 341 East Main St,Ripon Reported: <br /> 6262 Hollis Street <br /> Emeryville CA,44608 Project Manager: Owen Ratchye ' 01/03/01 15:01 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Source %REC RPD <br /> 4nalyte — Result Limit�Ut<iu Level___Result %REC Limits RPD Limit Notes <br /> 3atch 0120618-EPA 5030 waters <br /> Rank(0120618-BLKI) Prepared&Analyzed: 12/29/00 <br /> Cert-amyl methyl ether ND 1.00 ug/l <br /> 3enzene ND 0.500 " <br /> Cert-butyl alcohol ND 20.0 " <br /> )i-isopropyl ether ND 1.00 " <br /> ,2-Dibromoethane(EDB) ND 0.500 " <br /> i,2-Dichloroethane ND 0.500 " <br /> 3thanol ND 100 " <br /> -;thylbenzene ND 0.500 " <br /> 2thyl tent-butyl ether ND 1.00 " <br /> vlethyl tert-butyl ether ND 0.500 <br /> Coluene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:Dibromofluoromethane 4.71 5.00 94.4 88-118 <br /> Surrogate:1,2-Dichloroelhane-d4 4.97 5.00 99.4 81-130 <br /> Surrogate:Toluene-d8 4.88 5.00 97.b 84-115 <br /> Surrogate:4-Bromofluorobenzene 5.78 5.00 116 78-114 <br /> Blank(0120618-BLK3) Prepared&Analyzed:01/02/01 <br /> Tert-amyl methyl ether ND 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 ND 0.500 " <br /> Ethyl tert-butyl ether ND 1100 " <br /> Methyl tert-butyl ether ND 0.500 " <br /> Toluene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:Dibromofluoromethane 4.91 _ 5.00 98.2 88-118 <br /> Surrogate:l,1-Dichloroethane-d4 5.43 5.00 109 81-130 <br /> Surrogate:Toluene-d8 4.96 5.00 99.2 84-115 <br /> Surrogate:4-Bromofluorobenzene 5.58 5.00 112 78-114 <br /> Sequoia 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 />