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I� <br /> 3 0 CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS <br /> Between March 24, and August 19, 2004, the groundwater surface dropped an average of 1 09 <br /> feet, and the groundwater flow direction and gradient remained relatively consistent On August <br /> 19, 2004, the depth to groundwater beneath the site was at its lowest level, since the monitoring <br /> wells were installed in July 2002 Otherwise, the groundwater surface characteristics are <br /> consistent with historical trends <br /> Between March 24, and August 19, 2004, the concentrations of petroleum hydrocarbons in <br /> groundwater generally decreased in all impacted wells The decline in petroleum hydrocarbon <br /> concentrations in groundwater beneath the site is probably a result of prior source removal efforts <br /> and on-going natural attenuation processes <br /> On May 7, 2004, Ramage Environmental recommended that groundwater conditions along the <br /> south and east walls of the parking garage be confirmed by installing groundwater monitoring <br /> wells, and that the lateral and vertical extent of impacted groundwater be defined <br /> On August 6 2004 EHD documented nted their review of Ramage Environmental's Additional Site <br /> Investigation Report, dated May 7, 2004, and directed that a work plan be submitted to further <br /> define the lateral and vertical extent of impacted groundwater , <br /> 9 <br />