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1455 McDowell Blvd.North,Ste,D <br /> Sequoia Petaluma,CA 94954 <br /> (707)792.1865 <br /> qw Analytical <br /> FAX(quos labs.c792- 4 <br /> wwwsequoialabs.co <br /> Cambria Environmental-Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 340 E.Main St.,Ripon.Ca. Reported: <br /> Emeryville CA,94608 Project Manager: Owen Ratchye 01/11/01 14:23 <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 0120275-EPA 5030 waters <br /> Blank(0120275-BLKI) Prepared&Analyzed: 12/12/00 <br /> Pert-amyl methyl ether ND 1.00 ug/l <br /> Benzene ND 0.500 " <br /> rert-butyl alcohol ND 20.0 " <br /> Di-isopropyl ether ND 1.00 " <br /> l,2-Dibromoethane(EDB) ND 0.500 " <br /> 1,2-Dichloroethane ND 0.500 " <br /> Ethanol ND 100 <br /> 8thylbenzene ND 0.500 " <br /> Ethyl tert-butyl ether ND 1.00 " <br /> Methyl tert-butyl ether ND 0.500 • <br /> roluene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:Dibromofluoramethane 4.50 5.00 90.0 88-118 <br /> Surrogate: 1,1-Dichloroethane-d4 4.26 5.00 85.1 81-130 <br /> Surrogate: Toluene-d8 4.96 5.00 99.2 84-115 <br /> Surrogate. 4-BromofTuorobenzene 5.10 5.00 104 78-124 <br /> Blank(0120275-BLK2) Prepared&Analyzed: 12/13/00 <br /> rert-amyl methyl ether ND 1.00 ug/l <br /> Benzene ND 0.500 " <br /> rert-butyl alcohol ND 20.0 " <br /> Di-isopropyl ether ND 1.00 " <br /> 1,2-Dibromoethane(ED13) ND 0.500 " <br /> 1,2-Dichloroethane ND 0.500 " <br /> Ethanol ND 100 " <br /> Ethylbenzene ND 0.500 " <br /> Ethyl tent-butyl ether ND 1.00 " <br /> Llethyl tent-butyl ether ND 0.500 " <br /> roluene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:Dibromofluoromethane 4.81 5.00 96.2 88-118 <br />- Surrogate:l;2-Dichloroethane-d4 4.87 5.00 97.4 81-130 <br /> Surrogate: Toluene-d8 5,08 5.00 102 84-115 <br /> Surrogate:4-Bromofluorobexzene 5.55 5.00 111 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 />