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3 0 CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS <br /> i <br /> Between December 19, 2002 and March 26, 2003, the groundwater surface dropped an average <br /> of 0 76 feet, the groundwater gradient decreased from 0 0071 to 0 0044 foot/foot, and the <br /> groundwater flow direction shifted approximately 5 degrees toward the north These groundwater <br /> flow and gradient characteristics are consistent with historical trends <br /> Based on cumulative soil and groundwater analytical results, gasoline compounds in the <br /> subsurface appear to be mostly defined to the dispenser area and to the northeast within the <br /> property boundaries As such, despite the close proximity and shallow construction of the on-site <br /> water supply well and nearby domestic wells, they do not appear to have been impacted by <br /> gasoline compounds released from the former UST system However, since gasoline compounds <br /> continue to exist in groundwater beneath the site, these water wells continue to be threatened <br /> Despite a slight increase in gasoline compound concentrations since the last groundwater <br /> sampling event, concentrations of gasoline compounds in groundwater beneath the site have <br /> generally declined, probably in response to prior source removal efforts and natural attenuation <br /> processes Given the relatively low and rapidly declining concentrations of gasoline compounds <br /> in 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 June 2003 <br /> 10 <br /> 8 <br />