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Cumulative Table of WelrData and Analytical Results <br /> ADDITIONAL ANALYSES <br /> Analytical values are in parts per billion(ppb) <br /> Hexa MTBE <br /> DATE Notes Nap- EPA 8270 EPA 8010 Cadmium Chromium lead Nickel Zinc chloro- EPA by EPA DIPE ETRE TAME Meth Eth t-But <br /> thalene ehtane 8260 8260 <br /> MW-4 <br /> 09/02/97 - 65 -- -- - <br /> 11/19/97 <20 <20 <20 <20<1000 <5000 <1000 <br /> -- -- __ -- -' - '_ _- <br /> 08/10/98 - -- ._ - <2 0 <2 0 <2 0 <2 0 -- <500 <100 <br /> - - -- -- -- <25 <25 <25 <25 -- <6250 <1250 <br /> I <br /> SUMP <br /> 01/07/97 -- -- - <0 5-<5 0 <br /> 11/19/97 - -- -- - <2 0 <2 0 <2 0 <2 0 <500 <100 <br /> 08/10/98 -- __ __ _- <br /> - - - <2 0 <2 0 <2 0 <2 0 -- <500 <100 <br /> i <br /> EPA 8260 Indicates lsopropylbenzene, n-Pâ–șopylbenzene, 1,2,4-Trimethylbenzene and 1,3 5-Trimeth Iben <br /> of 42, 100, 520 and 93 ppb Y enzene with respective values <br /> Note Blaine Tech Services, Inc began routine monitoring o1 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 <br /> MTBE=Methyl t-butyl ether <br /> DIPE=DI-Isopropyl Ether <br /> ETRE=Ethyl t-Butyl Ether <br /> Meth=Methanol <br /> Eth=Ethanol <br /> [-But=t- Butanol <br /> TAME=t-Amyl Methyl Ether <br /> Blaine Tech Services Inc 991124-A-1 4th-Q 1999 Monitoring at Former Chevron 9-8632 575 Grant Line Road,Tracy,CA t3 <br />