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Cumulative Table of Well Data and Analytical Results - <br /> ADDITIONAL ANALYSES (CONTD) <br /> Analytical values are In parts per billion(ppb) <br /> MTBE <br /> DATE Notes Naphthalene EPA 8010 EPA 8270 Cadmium Chromium Lead Nickel Zinc Hexa- EPA by EPA DIPS ELBE TAME Math Eth t But <br /> chloroethane 8260 8260 <br /> MW-4 <br /> 09!02187 - 65 — <20 <20 <20 <20<1000 <5000 <1000 <br /> 11/19/97 — <20 e2 0 <20 <20 - 400 <100 <br /> 0&10198 — — <25 <25 <25 <25 <6250 <1250 <br /> Sump P <br /> 01/07/97 <0 5-4 0 — -- - - - -- <br /> 11/1"7 -- — <2 0 <20 <2 0 <2 0 <500 <100 <br /> 08110/98 - — <20 <20 <2 0 <2 0 <500 <100 <br /> ` EPA 8260 Indicates Isopropylbenzene, n-Propylbenzene, 1,2,4-Trimethylbenzene and 1,3,5-Trimethylbenenzene with respective values <br /> of 42, 100, 520 and 93 ppb <br /> Note Blaine Tech Services, Inc began routine monitoring of the groundwater wells at this site on September 9, 1995 <br /> Earlier field data and analytical results are drawn from the May 12, 1995 Groundwater Technology, Inc report <br /> ABBREVIATIONS. <br /> TPH=Total Petroleum Hydrocarbons Meth=Methanol <br /> MTBE= Methyl t-butyl ether Eth=Ethanol <br /> DIPS=DI-Isopropyl Ether t-But=t-Butanol <br /> ETBE=Ethyl t-Butyl Ether TAME=t-Amyl Methyl Ether <br /> Blaine Tech Servloes,Inc 981124-J-1 4th-0 1998 Monitoring at Former Chevron 9-8632 575 Grant Line Road,Tracy,CA 6 <br />