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Cumulative Table of Well Tata and Analytical Results <br /> ADDITIONAL ANALYSES <br /> Analytical values are in parts per billion(ppb) <br /> Hexa MTBE <br /> DATE Notes Nap- EPA 8010 EPA 8270 Cadmium;hromium Lead Nickel Zinc chloro EPA by EPA DIPE ETBE TAME Meth Eth t But <br /> thalene ehtane 8260 8250 <br /> MW-4 <br /> 09/02/97 -- 65 -- - -- -- -- - -- -- <20 <20 <20 <20<1000 <5000,1000 <br /> 11/19/97 -- -- - - -- -- -- -- -- - -- <2 0 <2 0 <20 <2 0 -- <500 <100 <br /> 08/10/98 -- -- -- -- -- -- - - -- <25 <25 <25 <25 - <6250,1250 <br /> SUMP P <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 -- -- - -- -- -- -- -- -- <2 0 <2 0 <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 /> Nate 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 /> DIPE=Di-Isopropyl Ether t-But=t-Butanol <br /> ETBE=Ethyl t-Butyl Ether TAME=t-Amyl Methyl Ether <br /> Blaine Tech Services, Inc 990601-Y-2 2nd-0 1999 Monitoring at Former Chevron 9-8632 575 Grant Line Road,Tracy,CA 8 <br />