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C A M B R I A <br /> HYDROCARBON DISTRIBUTION IN GROUNDWATER <br /> No TPHg, benzene, and MTBE, other fuel oxygenates, EDB, 1,2-DCA, ethanol, or methanol <br /> were detected in the groundwater sample collected from boring CPT-2 <br /> The groundwater chemical analytical data are summarized in Table 3 and the TPHg, benzene, <br /> and MTBE results are presented on Figure 3 The certified laboratory analytical report is <br /> included in Appendix D <br /> CONCLUSIONS <br /> Groundwater monitoring wells MW-6 and MW-8 were installed to assess the lateral extent of <br /> impacted shallow groundwater beneath the site Groundwater results from these wells are <br /> discussed in Cambria's quarterly groundwater monitoring reports To date, no TPHg, benzene, <br /> or MTBE have been detected in these wells Further, the MTBE initially detected in MW-5, has <br /> not been detected for several quarters, suggesting that shallow groundwater beneath the site has <br /> not been impacted Soil from these well borings did not contain detectable concentrations of <br /> petroleum hydrocarbons or MTBE <br /> Boring CPT-1 was drilled to identify potential water bearing zones beneath the trite and was used <br /> to target the water sample depth in CPT-2 The purpose of boring CPT-2 was to assess the <br /> vertical extent of impacted groundwater beneath the site The Hydropunch groundwater sample <br /> was collected from the second water-bearing zone, and the results confirm that gasoline <br /> constituents have not impacted this zone <br /> Soil borings SB-5 through SB-9 were drilled to determine the extent of MTBE impacted soil in <br /> the northwestern dispenser area MTBE was detected in soil borings SB-6 through SB-8 at <br /> depths ranging from 14 5 to 39 5 fbg No MTBE was detected in soil from borings SB-5 or <br /> SB-9, providing further lateral delineation to the southwest and northeast of the impacted <br /> dispenser Borings SB-1, SB-3, and SB-4, drilled in February 2000, achieved lateral delineation <br /> to the east and south <br /> These data demonstrate that the MTBE impact to Soil is limited to the northwestern dispenser <br /> area and that groundwater beneath the site has not been impacted <br /> 1346 6 <br />