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404 N Wiget lane <br /> Sequoia Walnut Creek C894598 <br /> (925)988-9600 <br /> J 4 FAX(925)988-9673 <br /> 4D Analytical www sequoialabs com <br /> *ttler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# 11193 Reported <br /> Dublin CA,94568 Prosect Manager Doug Lee 04-Jan-01 10 26 <br /> Conventional Chemistry Parameters by APHA/EPA Methods - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunt Units Level Result %REC Limas RPD Lunit Notes <br /> Batch OL14006-General Preparation <br /> Duplicate(OL14006 DUPI) Source W012299-05 Prepared&Analyzed 13-Dec-00 <br /> pH 79 0 10 pH Units 8 1 25 30 <br /> is <br /> Sequoia Analytical-Walnut Creek The results in tins 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 21 of 27 <br />