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404 N Wiget Lane <br /> Sequoia Walnut Creek C94598 <br /> (925)988 8 9600 <br /> 4,!D- FAX(925)988 9673 <br /> Analytical www sequoialabs com <br /> wo 0 <br /> Gettler RN an Inc - Dublin Project Tosco <br /> b74'7 Sierra Court Suite i Project Number Tosco It 1 1 192 Reported <br /> Dublin CA 04568 - Project Manager Doug Lee 04-Sep-01 07 28 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> ReportingT Spike Source °ioREC RPD <br /> 4nad�te Result t_.lmit Units Level Result %REC Limits RPD Limit Totes <br /> Batch IH29010- EPA 5030B(PIT) <br /> Blank (IH29010-BLK1) Prepared&Analyzed 29-Aug-01 <br /> Ethanol-- r-- --- ---- ----- ND 500 - ug/l -- — -------- <br /> teri-Bund alcohol ND 20 <br /> Nle+hNI ten-bun i ether(MTBE) ND 20 <br /> Di-isoproptiIether ND 20 <br /> Ethyl ten-bur}I ether ND 20 <br /> ter[-Amvl methvl ether ND 20 <br /> l Dichloroelhane ND 20 <br /> Eth%leve dibromide ND 20 " <br /> Surrogate Dibromnfluoromethane - 43 8 _____50_0 <br /> 500 --� --8-7-6---50-1-50 <br /> Surrogate 12-Dichluroethone-.14 533 30 0 107 30-150 <br /> Blank (IH29010-BLK2) Prepared&Analyzed 30-Aug-01 . <br /> --- - --- - -------------- -- ---- - -'---------- - <br /> Ethanol ND 500 ugr7 ___------ ------- <br /> ten-Buhl alcohol ND20 <br /> Meth%I ten-burg]etner i h1TBD ND 20 " <br /> Di-isoprop%I ether ND' 20 <br /> Eth.l ten-bit.1 CHIC, ND 20 " <br /> tin-Amti I meth%I e.her NO 20 <br /> 1 2-Dichloroed=e ND 20 " <br /> Eth%leve dibromide ND 20 <br /> .Surrogate Dibromofluoromethow, _—-_T 50 6, 500 100 50-150 <br /> Surrogate 1 2-Dichloroethana44 458 500 916 50-150 <br /> LCS(IH29010-BSI) Prepared& Analyzed 29-Aug-01 <br /> WOO tent-butyl ether(MTBE) - --_----- ---- 43 1 - —� 2 0 ugll� 500 862 70-130-- �-4 <br /> Sur rugaie Divro nofluoronreihanF- - -- -- - - 46 0 - --- Soo 920 50-150 - <br /> Sureogaie 12-Dicnloioethane-d4 51 i 500 103 50-150 <br /> Sequoia Analytical- Walnut Cree} The residis in this report apple to the samples analyzed in accordance with the ch <br /> custody document This analytical-eport must be reproduced in its entire <br /> Page 9 of 12 <br />