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• <br /> 1455 McDowell Blvd.North,Ste.1] <br /> Sequoia <br /> a Petaluma, 79 94954 <br /> -1865 <br /> J c 1 (707)792-1865 <br /> FAX(707)792-0342 <br /> 'Wr 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 Ratchye 03/22/01 16:29 <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 (Votes <br /> Batch.1030-400-r-EPA_5030 waters <br /> Blank(1030400-BLK1) Prepared&Analyzed:03/15/01 <br /> Methyl tert-butyl ether ND 0.500 ug/l <br /> Surrogate:Dibromofluoromethane 5.15 5.00 103 88-118 <br /> Blank(1030400-BLK2) Prepared&Analyzed:03/16/01 <br /> Methyl tert-butyl ether ND 0.500 ugA <br /> Surrogate:Dibromofluoromethane 5.01 5.00 100 88-118 <br /> LCS(1030400-BS1) Prepared&Analyzed: 03/15/01 <br /> Methyl tent-butyl ether 4.93 0.500 ug/1 5.00 98.6 79-118 <br /> Surrogate:Dibromofluoromethane 5.17 5.00 103 88-118 <br /> L_CS(1030400-BS2) Prepared&Analyzed: 03/16/01 <br /> Methyl tent-butyl ether 4.68 0.500 ug/i 5.00 93.6 79-118 <br /> Surrogate:Dibromofluoromethane 5.14 5.00 103 88-118 <br /> Matrix Spike(1030400-MSI) Source: P103256-20 Prepared&Analyzed:03/15/01 <br /> Methyl tert-butyl ether 4.68 0.500 ugll 5.00 ND 93.6 79-118 <br /> Surrogate:Dibromofluoromethane 5.28 5.00 106 88-118 <br /> Matrix Spike Dup(1030400-MSDI) Source: P103256-20 Prepared&Analyzed:03/15/01 <br /> Methyl tert-butyl ether 5.10 0.500 ug/l 5.00 ND 102 79-118 8.59 20 <br /> Surrogate:Dibromofluoromethane 5.26 5.00 105 88-118 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance With the chair.* <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 6 of 7 <br />