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r ' <br /> 30 December 1999 <br /> AGE-NC Project No 95-0121 <br />' Page 5 of 5 _ <br /> remedial alternative <br /> a <br />'y <br /> 50. RECOMMENDATIONS <br /> Based upon data collected from the site in October 1999, AGE recommends <br /> • Reduction of ground water monitoring events from quarterly to annual events until initiation <br />' of a remediation system at the site, in accordance with a PHS-EHD approval letter dated 08 <br /> December 1999, the next event is tentatively scheduled for 26 January 2000 <br /> ' •' Initiation of in-situ air sparging at the site in conjunction with soil vapor extraction A W' bioremediation remediation technology does not appear to be a feasible remedial method, <br /> and to aggressively remediate the site, the petroleum contaminants will need to be <br />' mechanically stnpped from the dissolved and adsorbed phases and vented into the vadose <br /> zone <br /> 6 0. 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 upon <br /> analytical results provided by an independent laboratory Evaluations of the geologic/hydrogeologic <br />' conditions at the site for the purpose of this investigation are made from a limited number of <br /> available data points (1 a monitoring wells), and subsurface conditions may vary away from these <br /> data points No other warranty, expressed or Implied, Is made as to the professional <br /> recommendations contained in this report <br /> , 1 <br /> f <br /> Adsonced Geo£n-,nronmental, Inc <br /> f <br /> `r <br />