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MTBE and the other fuel oxygenates were below laboratory detection limits in the soil sample <br /> collected from boring SHP-6. <br /> Based on the results of this investigation, it appears that TPH-G and MTBE are present in the shallow <br /> groundwater and have migrated only a short distance generally down gradient on site near groundwater <br /> monitoring wells MW-2 and MW-5. The maximum TPH-G and MTBE concentrations detected in the <br /> groundwater samples from this investigation were 8,900 micrograms per liter (µg/1) for both <br /> constituents in the sample from SHP-2, which is located near MW-2, approximately 25 feet <br /> downgradient of the pump island. The lateral and vertical extent of petroleum hydrocarbons and MTBE <br /> at the site appears to be adequately defined in all directions, including to the east of the site, in the area <br /> of the soil boring SHP-6, and newly installed wells MW-9 and MW-10. <br /> r <br /> 1 <br /> r <br /> i <br /> �r <br /> .r <br /> �r <br /> r <br /> �r <br /> J-,.lo Pnpre..Wl'IAtiTnP5p5 UJtREP4Rri1JiMILtinil airino+nJ Wrll In.1.Iluww.Joc 2 <br />