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. evaluated to see if it is a feasible remediation option Regulator feedback <br /> suggests that the system be continually operated until site specific water quality <br /> objectives are achieved or until SVE is no longer a feasible remediation option for <br /> this site <br /> c Can individual wells be removed from the system? Can the above-ground <br /> system operate efficiently at a reduced flow rate> Evaluate the cost savings <br /> by reducing the number of wells (in some cases, the capacity gained by <br /> removing non-productive wells may allow higher airflow rates through <br /> more contaminated parts of the site. However, the blowers may need to be <br /> adjusted or replaced with different sized units to accommodate changes in <br /> airflow/vacuum requirements) It has not yet been established if individual <br /> extraction wells can be removed from the system Future site visits will focus on <br /> collecting data from individual extraction wells in order to determine which wells <br /> are most efficient and which, if any, can be removed from the system ENSR can <br /> then optimize the system by opening and closing the manual valves attached to <br /> the extraction wells <br /> d Can additional wells be placed in the plume or the extraction rates from <br /> existing wells be redistributed in a way that would economically speed up <br /> remediation? (New wells may replace several existing wells and may <br /> achieve objectives at a lower total flow Detailed SVE modeling and <br /> . extraction system optimization should be recommended as part of a <br /> separate study, if appropriate and justified by the potential costs savings) <br /> It has not yet been determined if additional extraction wells will be necessary to <br /> restrict plume size Future data is necessary if the current well infrastructure is <br /> capable of remediating groundwater to drinking water standards <br /> e In some cases, other technologies may be able to accomplish the same <br /> objectives or speed cleanup ENSR has evaluated In-Situ Chemical <br /> Oxidation as an alternative technology but does think that it is an appropriate <br /> alternative at this time <br /> 9 Supplemental Notes and Data There are no supplemental notes or data attached to <br /> this checklist <br />