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Working To Restore Nature <br /> and the correlation of data from specific points (wells and borings) with the actual conditions <br /> across the site Fluctuating groundwater levels in onsite wells may decrease the effective screen <br /> ' available to vent from, and hence reduce the effectiveness of the VES. Duration of cleanup can <br /> be more accurately predicted after a performance evaluation of the VES has been completed <br /> t <br /> The schedule assumes that the performance evaluation will show that the remediation system is <br /> effectively removing hydrocarbons from areas of impacted soil and groundwater onsite It also <br /> assumes that no additional onsite or offsite vapor or groundwater extraction wells, or other <br /> remedial technologies are required to effectively remediate impacted areas, once the treatment <br /> system is operational. Installation of additional wells will require submittal of a work plan to <br /> regulatory agencies, well permits to install wells, and installation and tie in of wells to the <br /> existing system. <br /> To verify cleanup of previously impacted soil, verification borings will be drilled and samples <br /> collected and analyzed to show that the soil has been remediated below currently established <br /> State cleanup levels. Quarterly monitoring of existing monitoring wells will continue to evaluate <br /> ' the remediation of groundwater. <br /> 8.0 LINMATIONS <br /> This report was prepared in accordance with generally accepted standards of environmental <br /> geological and engineering practice in California at the time this investigation was performed. <br /> This assessment was conducted solely for the purpose of evaluating environmental conditions of <br /> ' the soil and groundwater with respect to gasoline and waste-oil related hydrocarbons at the site <br /> No soil engineering or geotechmcal references are implied or should be inferred. Evaluation <br /> ' of the geologic conditions at the site for the purpose of this assessment is made from a limited <br /> number of observation points Subsurface conditions may vary away from the data points <br /> ' available. Additional work, including further subsurface investigation, can reduce the inherent <br /> 38009-s38009-9 FRP 20 <br />