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i4 <br /> 1455 McDowell Blvd.North,Ste,D <br /> Sequoia Petaluma,CA79 94954 <br /> -1865 <br /> 4 41� (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 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 0100763- EPA 5030 waters <br /> Blank(0100763-BLK1) Prepared&Analyaed:10/30/00 <br /> Toluene ND 0.500 ug/l <br /> Xylenes(total) ND 0.500 <br /> Surrogate:Dibromofluoromethane 4.61 5.00 91.1 88-118 <br /> Surrogate: l,2-Dichloroethane-d4 4.68 " 5.00 93.6 81-1.30 <br /> Surrogate: Toluene-d8 4.77 5.00 95.4 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.60 5.00 92.0 78-124 <br /> Blank(01007_63-_BLK_3_)_ _ _ Prepared&Analyzed: 10_/31100 <br /> Ten-amyl methyl ether ND 1.00 ug/I <br /> Benzene ND 0.500 " <br /> Tert-butyl alcohol ND 20.0 " <br /> Di-isopropyl ether ND 1.00 <br /> 1,2-Dibtomoethane(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:Dibramofluoromethane 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 /> LCS(0100763-BSI) _ _ Prepared&Analyzed: 10/30/00 <br /> Benzene T� 5.24 0.500 ue 5.00 105 80-119 <br /> Methyl tert-butyl ether 4.99 0.500 5.00 99.8 79-118 <br /> Toluene 4.94 0.500 5.00 98.8 86-115 <br /> Surrogate:Dibrotnofluoromethane 4.84 5.00 96.8 88-118 <br /> Surrogate 1,2-Dichloroethane-d4 4.88 5.00 97.6 81-130 <br /> Surrogate:Toluene-d8 4.79 5.00 95.8 . 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.69 5.00 93.8 78-124 <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 I 1 of 13 <br />