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Y� <br /> tip <br /> 1455 McDowell Blvd.North,Ste.D <br /> Sequoia Petaluma,CA 94954 <br /> (707)792-1865 <br /> 4D FAX(707)792-0342 <br /> 1„p Analytical www.sequoialabs.com <br /> Cambria Environmental- Emeryville Project: Equiva <br /> 6262 Hollis Street Project Number: 341 East Main St,Ripon Reported: <br /> Emeryville CA,94608 Project Manager: Owen Rastchye ,. 11/03/00 09:31 <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 0110022 -EPA 5030 waters <br />�IVlatriz S_pike Dup(4T1'Ol}22=NiSDl) _ __ Sauree: P010724=03 Prepared&Analyzed:1-1701700 <br /> Benzene 5.49 0.500 ug/l 5.00 ND 110 80-119 1.65 20 <br /> Methyl tert-butyl ether 5.21 0.500 5.00 ND 104 79-118 1.94 20 <br /> Toluene 5.09 0.500 5.00 ND 102 86-115 1.56 20 <br /> Surrogate:Dibromofluoromerhane 5.12 5.00 101 88-118 <br /> Surrogate: 1,2-Dichloroethane-d4 5.43 5.00 109 81-130 <br /> Surrogate: Toluene-d8 5.00 5.00 100 84-115 <br /> Surrogate:4-Bromofluorobenzene 4.71 5.00 94.2 78-124 <br /> i <br /> Sequoia Analytical-Petalurna The results in this report apply to the samples analyzed in accordance with the chain I* <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page a of 9 <br />