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Table 4—Groundwater Monitoring Results. This table summarizes the historical <br /> groundwater analytical data for TPHG, BTEX,methyl tert-butylether(MTBE), and total <br /> lead. Data summarizing the groundwater elevations and screen intervals are also <br />{ presented. This provides data on when monitoring well screens became submerged. <br /> Ili Table 5 —HydroPunch Groundwater Sample Analytical Results. This table summarizes <br /> the groundwater analytical results during the hydropunch borings in January 1995. <br /> Table 6—Summary of Intrinsic Biodegradation Parameter Data. This table provides <br /> intrinsic biodegradation parameter data collected between October 1995 and December <br /> 1996. <br /> Table 7— Summary of 1995 SVE Operation and Estimated Mass Removal. This table <br /> summarizes the 1995 SVE operation and estimated hydrocarbon mass removal. <br /> Hydrogeologic Cross-Sections <br /> A total of four hydrogeologic cross-sections and associated overlays were prepared <br /> depicting soil analytical data. Separate plots of the cross-sections were prepared that <br /> present water level and groundwater analytical data. <br /> Soil Data <br /> The cross-sections provide an interpretation of the lateral and vertical distribution of the <br /> soil types encountered during drilling and show locations of boreholes and well <br /> construction. Four sets of overlays include the following: <br /> - Summary of soil analytical results <br /> - Isoconcentration plot of TPHG data <br /> - Isoconcentration plot of benzene data <br /> - Isoconcentration plot of total lead data <br /> Groundwater Data <br /> Groundwater level and groundwater analytical data are summarized on a series of four <br /> hydrogeologic cross-sections. Each cross-section depicts soil types, wells an borings, <br /> observed groundwater level rise between September 1991 and December 1997, and a <br /> comparison of groundwater analytical results from September 1991 and December 1997 <br /> monitoring events. <br /> Plan View Maps <br /> i The intrinsic biodegradation data and a comparison of September 1991 and April 1997 <br /> i dissolved petroleum hydrocarbon monitoring results were plotted on plan view overlays <br /> of the site base map. This presentation method provides a more complete, site-wide <br /> illustration of the data than could be depicted on cross-section overlays. <br />