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P A <br /> j f <br /> 1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petaluma,CA 94954 <br /> (707)792-1865 <br /> FAX(707)792-0342 <br /> Analytical www.sequoialabs.com <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 10/26/00 15:04 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical- San Carlos <br /> Reporting Spike Source %RFC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPV Limit Notes <br /> Batch 0100119-EPA 5030B (PITT <br /> Blank(0100119-BLK1) Prepared&Analyzed: 10/24/00 <br /> 1,2-Dibromoethane ND 2.00 ug/l <br /> 1,2-Dichloroethane ND 2.00 " <br /> Benzene ND 2.00 " <br /> Toluene ND 2.00 " <br /> Ethylbenzene ND 2.00 " <br /> Xylenes(total) ND 2.00 " <br /> Ethanol ND 1000 " <br /> Methyl Cert-butyl ether ND 2.00 " <br /> Di-isopropyl ether ND 2.00 <br /> Tert-butyl alcohol ND 100 <br /> Ethyl tert-butyl ether ND 100 <br /> da-arnyll mcthyl cthcr ND 2.00 " <br /> . --- -- - -- -- _ - _ - - - - - - ----- -- <br /> rogate-- :-1,2-Di- - chloroeth--- -- <br /> ane" d4- - , <br /> -- - 56.0--- -- 50.0 112 76.0-114 <br /> Surrogate Toluene-d8 51.8 50.0 104 88.0-110 <br /> Surrogate:4-BFB 50.7 50.0 101 86.0-115 <br /> Blank(0100119-BLK2) Prepared &Analyzed: 10/24/00 <br /> 1,2-Dibromoethane ND 2.00 ug/l <br /> 1,2-Dichloroethane ND 2.00 " <br /> Benzene ND 2.00 " <br /> Toluene ND 2.00 " <br /> Ethylbenzene ND 2.00 " <br /> Xylenes(total) ND 2.00 " <br /> Ethanol ND 1000 " <br /> Methyl tent-butyl ether ND 2.00 " <br /> Di-isopropyl ether ND 2.00 " <br /> Teri-butyl alcohol ND i00 " <br /> Ethyl tert-butyl ether ND 2.00 " <br /> Ten-amyl methyl ether ND 2-00 " <br /> Surrogate:l,2-Dichloroethane-d4 52.7 50.0 105 76.0-114 <br /> Surrogate: Toluene-d8 50.7 50.0 101 88.0-110 <br /> Surrogate:4-BFB 47.8 50.0 95.6 86.0-115 <br /> uoia 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 /> Page 6 of 10 <br />