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4 0 CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS <br /> ' Results of this investigation confirmed that the direction of groundwater flow is toward the <br /> northeast, and that impacted soil and groundwater appears to be defined to the site <br /> Between September 26 and December 19, 2002, the groundwater surface rose an average of <br /> 2 43 feet, the groundwater gradient increased slightly from 0 060 to 0 071 foot/foot, and the <br /> ' groundwater flow direction remained toward the northeast <br /> Based on the soil and groundwater analytical results from MW-5 and MW-6 and the groundwater <br /> results from the recent CPT borings, gasoline compounds in the subsurface appear to be mostly <br /> defined to the dispenser area and to the northeast within the property boundaries As such, <br /> despite the close proximity and shallow construction of the on-site water supply well and nearby <br /> domestic wells, they do not appear to have been impacted by gasoline compounds released from <br /> ' the former UST system However, since gasoline compounds continue to exist in groundwater <br /> beneath the site, these water wells continue to be threatened <br /> In general, the concentrations of gasoline compounds in groundwater beneath the site continue to <br /> decline, probably in response to prior source removal efforts and natural attenuation processes <br /> Given the relatively low and rapidly declining concentrations of gasoline compounds in <br /> groundwater beneath the site, active soil and groundwater remediation may not be necessary to <br /> reduce concentrations to below water quality goals <br /> Based on these conclusions, Ramage Environmental recommends that the six monitoring wells <br /> and on-site water supply well continue to be monitored and sampled on a quarterly basis The <br /> ' next monitoring event is scheduled for March 2003 <br /> 1 <br /> r <br /> ' 12 <br />