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08 October 1999 <br /> AGE-NC Project No 96-0229 <br /> Page 5 of 6 <br /> AGE concludes <br /> • Ground water monitoring data collected in the area of wells MW-1 through MW-10 indicated <br /> a ground water flow direction generally toward the north at a gradient of 0 0021ft/ft <br /> • Due to the low gradient at the site, slight variations in ground water measurements or <br /> changes of recharge/discharge of the local ground water could greatly modify ground water <br /> flow direction <br /> • Monitoring wells MW-1, MW-4 and MW-1013 are "drowned", and yield samples more <br /> representative of deeper ground water conditions <br /> • The elevated concentrations of petroleum hydrocarbons detected in samples collected from <br /> wells MW-1, MW-2, MW-3 and MW-6 indicate that these wells are within or near the <br /> dissolved petroleum hydrocarbon "core area" of the plume (Figure 4) <br /> • The dissolved petroleum hydrocarbon plume appears to have migrated as far as MW-10B <br /> 5.0. RECOMMENDATIONS <br /> Based upon data collected during July 1999, AGE recommends <br /> e Preparation of a work plan for the installation of at least two ground water monitoring wells <br /> to further assess the extent of the dissolved petroleum hydrocarbon plume <br /> • Preparation of a Feasibility Study Work Plan to evaluate cost effective alternatives to <br /> remediate the dissolved petroleum hydrocarbon plume at the site <br /> • Preparation of a Corrective Action Plan (CAP), the CAP should include results of any <br /> required feasibility studies to determine remediation alternatives for the site A receptor <br /> survey should also be performed to locate potential receptors within 2,000 feet of the site, <br /> results of the receptor survey should be included in the CAP <br />' • Continued quarterly ground water monitoring and sampling should be performed at the site <br /> in October 1999 <br /> r <br /> r <br /> 60. LIMITATIONS <br />' Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based mainly <br /> Adianced GeoEm iron mental,Inc <br />