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' 17 January 2006 <br /> AGE-NC Project No 97-0249 <br />' Page 8 of 8 <br /> • the high mobility of the above contaminants dissolved in the First Water Zone(30 to 50 feet) <br />' and Second Water Zone (70 to 85 feet) <br /> • the apparent southeastward dispersion (downgradient) of the Three B's Truck Plaza <br /> dissolved hydrocarbon plume towards the Flag City Chevron dissolved plume <br />' AGE recommends that a ground water pump-and-treat, interim remediation technology be <br /> implemented at the site based on the following assumptions <br />' • permeable to semi-permeable lithology between 15 and 50 feet bsg <br /> • pump-and-treat would implement immediate hydraulic control <br /> • successful pump-and-treat remediation results achieved from the adjacent Flag City Chevron <br /> between November 2000 and August 2004 <br /> 6.0. LIMITATIONS <br /> lieOur 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 />' upon analytical results provided by an independent laboratory Evaluations of the hydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of <br /> available data points (ground water samples), and subsurface conditions may vary away from these <br />' data points No other warranty, expressed or implied, is made as to the professional interpretations, <br /> opinions and recommendations contained in this report <br /> 1 <br />' Advanced GeoEnvironmental,Inc <br />