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1455 McDowell Blvd.[North,Ste.D <br /> Sequoia Petaluma,cA 94954 <br /> (707)792-1865 <br /> IDr� <br /> FAX(707)792-0342 <br /> Analytical www.sequoialahs.com <br /> Cambria Environmental- Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 341 East Main St.,Ripon,CA. Reported: <br /> Emeryville CA,94608 Project Manager: Owen Rastchye 11/29/00 17:17 <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Source %REC RPI) <br /> Analyte Result Limit Units Level Result %REC Limits RPI) Limit Notes <br /> Batch 0110682 - EPA 5030 waters <br /> Blank(011068_2-BLK1)_ _ 'repared&Analyzed: 11/28/00 <br /> Tert-amyl methyl ether ND 1.00 ugil <br /> Benzene ND 0.500 " <br /> Tert-butyl alcohol ND 20.0 <br /> Di-isopropyl ether ND 1.00 " <br /> 1,2-Dibromoe-thane(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 /> eves(total) ND 0.500 <br /> W"'ogate:Dibromafluoromethane - 4.78 - - 1-- 5.00 - 95.6 88-118 - <br /> Surrogate: 1,2-Dichloroethane-d4 4.89 5.00 97.8 81-130 <br /> Surrogate: Toluene-d8 4.79 5.00 95.8 84-115 <br /> Surrogate:4-Bromo/7uorobenzene 4.63 5.00 92.6 78-124 <br /> Blank(_01_10682-BLK2) f Prepared&Analyzed: 11/29/00 - _ <br /> Tert-amyl methyl ether ND 1.00 ugll <br /> Benzene ND 0.500 <br /> Tett-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 ten-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 _ 4.62 " .4 88 118 <br /> 5.00 92 <br /> Surrogate: 1,2-Dichloroethane-d4 4.42 5.00 88.4 81-130 <br /> Surrogate: Toluene-d8 4.74 5.00 94.8 84-115 <br /> Surrogate:4-Bromofluorohenzene 4.87 5.00 97.4 78-124 <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 /> Page 7 of 9 <br />