Laserfiche WebLink
1 <br /> RM Associates 701-0102 <br /> ' The calculation of hydrocarbon mass is based on the parameters estimated in Item V of Appendix <br /> A The calculation spreadsheet showing the mass calculations of TPHg in soil is presented in <br /> Item VI of Appendix A <br /> 2.4 Groundwater Monitoring <br /> ' Inc in this report are the results of all previous groundwater sampling events including the <br /> Included p p g p <br /> latest conducted on July 22, 2004 The results of the monitoring events reported after January <br /> ' 2000 are particularly significant because these followed the suspension of soil vapor and <br /> groundwater extraction The shut down occurred on February 21, 2000, and has not resumed <br /> ' The sampling and sample handling procedures are presented in Appendix B as Item I <br /> ' The locations of the groundwater monitoring wells and other relevant features are shown on <br /> Figure 2 Table 1 summarizes the construction details for all monitoring and co-extraction wells <br /> installed for site investigation, groundwater monitoring, and site remediation <br /> ' 2.4.1 Groundwater Analytical Results <br /> ' A summary of all groundwater analytical results between May 1997 an the present, including the <br /> most recent (and previously unreported)July 22, 2004 results, are presented in Table 2 and are also <br /> shown on Figure 3 Earlier groundwater monitoring performed by Park and others are reported in <br /> Appendix C as Item I The groundwater analytical results are further discussed under Section 3 <br /> ' 2.4 2 Groundwater Elevation and Gradient <br /> A summary of the recent and previous groundwater elevation measurements is shown on Table 3 <br /> ' Groundwater elevation contours for the July 22, 2004 monitoring event are presented in Figure 3 <br /> Historical groundwater elevation data (prior to 5/97) and groundwater gradients are included in <br /> ' Appendix C as Item II <br /> Copies of the July 22, 2004 field purge/sampling field sheets are presented in Appendix B as Item <br /> ' 11 A copy of the certified laboratory report and chain of custody for this monitoring event are <br /> Presented in Appendix B as Item III <br /> ' 2.4 3 Groundwater Iso-Concentration Contour Maps for TPHg and Benzene <br /> ' The pre-iemediation iso-concentration contour maps for TPHg and Benzene are presented in <br /> Appendix C as Item III Maps include estimated parameters for Mass Calculations <br /> The post-remediation iso-concentration contour maps for TPHg and Benzene are presented in <br /> Appendix C as Item IV <br /> ' Page 4 of 11 <br />