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Aven <br /> Suite <br /> Sequoia 819 Striker Sacramento, <br /> C 958 8 <br /> 5acrarnento,CA 95834 <br /> (916)921-9600 <br /> 14wAnalytical FAX(916)921-0100 <br /> www.sequoiafabs.com <br /> Blaine Tech Services,Inc. Project: Equiva,620 W.Charter Way,Stockton,CA <br /> 1680 Rogers Avenue Project Number: 01021542 Reported: <br /> San Jose CA,95112-1105 Project Manager: Nick Sudano 03/09/0109:32 <br /> MTBE Confirmation by EPA Method 8260A -Quality Control <br /> Sequoia Analytical=--Sacramento <br /> Reporting Spike Source %REC RPD <br /> lAnatyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1020305-EPA 5030B [PIT] <br /> Blank(1020305-BLK1) Prepared&Analyzed:02/28/01 <br /> Methyl tent-butyl ether ND 2.00 ug/I <br /> Surrogate: 1,2-DCA-d4 51.1 50.0 102 60-140 <br /> LCS(1020305-BSI) Prepared&Analyzed:02/28/01 <br /> Metbyl tert-butyl ether 51.2 2.00 ug/1 50.0 102 70-130 <br /> Surrogate: 1,2-DCA-d4 50.7 50.0 101 60-140 <br /> LCS Dup(1020305-BSDI) Prepared&Analyzed:0212810) <br /> Methyl tert-bury[ether 55.9 2.00 ug/1 50.0 112 70-130 8.78 25 <br /> Surrogate: 1,2-DCA-d4 57.9 1150.0 116 60-140 <br /> Matrix Spike(1020305-MSI) Source: 5102246-08 Prepared&Analyzed:02/28/01 <br /> Methyl ten-butyl ether 115 2.00 ug/l 50.0 57.4 115 60-140 <br /> Surrogate:1,2-DCA-d4 60.9 50.0 122 60-140 <br /> Matrix Spike Dup(1020305-MSD1) Source: S102246-08 Prepared&Analyzed:02/28/01 <br /> Methyl Cert-butyl ether 114 2.00 ug/l 50.0 57.4 113 60-140 0.873 25 <br /> TSurrogate:=1;2-DCA44 - 55.8 50.01.12-60140 <br /> The results In this report apply to the samples anal ed in accordance with the chain o <br /> Sequoia Analytical-Sacramento p pp y p y= <br /> custody document. This analytical report must be reproduced in its entirety. 0 <br /> Page 12 of 14 <br />