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819 Striker Avenue,Suite 8 <br /> Sequoia Sacrarn nto,916 92 95834 <br /> -9600 <br /> (936)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www.sequoialabs.com <br /> IV <br /> Blaine Tech Services,Inc. Project: Equiva,341 East Main St.,Ripon,CA <br /> 1680 Rogers Avenue Project Number: 010103-]1 Reported: <br /> San lose CA,95112-1105 Project Manager: Nick Sudano 03/16/0109:13 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1A15009-EPA 5030B(PIT) <br /> Blank(IA15009-BLKI) _Prepared&Analyzed:01/16/01 <br /> Ethanol ND 50 ug/l <br /> Methyl tert-butyl ether ND 0.50 " <br /> Di-isopropyl ether ND 5.0 <br /> Ethyl tert-butyl ether ND 5.0 " <br /> tert-Amyl methyl ether ND 5.0 -- <br /> Surrogate:Dibromofluoromelhane 25.0 25.0 100 50-150 <br /> Surrogate:l,2-Dichloroethane-d4 22.0 25.0 88.0 50-150 <br /> LCS(1A15009-BSI) Prepared&Analyzed: 01/16/01 _ <br /> Methyl tent-butyl ether 22.8 0.50 ugll -_25.0 T -_ 91.2 70-130 <br /> Surrogate:Dibromofluoromethane 25.0 25.0 100 50-150 <br /> �rrogate: l,2-Dichloroethane-d4 22.0 25.0 88.0 50-150 <br /> trix Spike(1A15009-MS1) Source:W101128-07 Prepared&Analyzed:01/16/01 <br /> Methyl tert-butyi ether 25.3 0.50 ugll 25.0 ND 101 60-150 <br /> Surrogate:Dibromofluoromethane 27.0 25.0 108 50-150 <br /> Surrogate: l,2-Dichioroethane-d4 24.0 25.0 96.0 50-150 <br /> Matrix Spike Du (1A15009-MSD1) Source:W101128-07 Prepared&Analyzed:01/16/01 <br /> Methyl tert-butyl ether 28.0 0.50 ug/1 25.0 ND 112 60-150 10.1 25 <br /> Surrogate:Dibromofluoromethane 27.0 25.0 108 50-150 <br /> Surrogate:l,2-Dichloroethane-d4 23.0 25.0 92.0 50-150 <br /> equoia Analytical-Sacramento 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 10 of I I <br />