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1 • 15 July 1947 <br /> AGE-NC Project No 95-4111 <br />' Page 3 of 4 <br /> 4.0. CONCLUSIONS AND RECOMMENDATIONS <br /> t <br /> 41 CONCLUSIONS <br />' Based upon data collected from the site,AGE concludes the following <br />' • During the June 1997 monitoring event,ground water flow direction at the site was generally <br /> toward the north-northeast <br />' • In general, over the last quarter, concentrations of petroleum hydi ocarbons decreased <br /> significantly in monitoring wells MW-4 and MW-5, located at the northern edge of the site <br /> No detectable concentrations of TPH-g were present in the sample collected from monitoring <br />' well MW-4 The concentrations of TPH and BTE&X increased in monitoring wells MW-1 <br /> and MW-2, both on site, over the last quarter <br /> • It appears that monitoring well MW-6 is located past the down-gradient margin of the plume <br />' of dissolved hydrocarbons <br /> • The western extent of the dissolved hydrocarbon plume along Grant Line Road,now appears <br />' • to be limited to the location of monitoring well MW-4 <br /> 4 2 RECOMMENDATIONS <br /> ti y <br />' Based on present site conditions, AGE recommends the following <br /> • An additional monitoring well should be installed east of MW-5 along Grant Line Road A <br />' proposed monitoring well location is illustrated on Figure 2 A Work Plan Addendum has <br /> been approved for the installation of this well AGE recommends securing the necessary city <br />' permits and commencing with the well installation <br /> • If ground water remediation is required on the site, feasibility testing should be performed <br /> to evaluate various remedial alternatives <br />' • Quarterly monitoring and sampling should continue at the site The next quarterly monitoring <br /> should be scheduled for August 1997, following installation of the additional ground water <br />' monitoring well <br /> N <br /> s <br />