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' 20 December 2001 <br /> • AGE-NC Project No 98-0497 <br />' Page 4 of 4 <br />' • MTBE was not detected in samples collected from the ground water monitoring network <br /> Fuel additives have not been detected m ground water samples since monitoring began in <br /> August 2000 <br /> 1 • Measured ground water elevation is approximately 37 4 feet below msl, and was within the <br /> screened interval of each monitoring well Ground water flow direction was toward the east- <br /> southeast with a gradient of 0 0004 feet/feet Historically, flow direction at the site has been <br /> toward the east or has had no observable gradient <br /> • The east and west limits of the petroleum hydrocarbon-impacted ground water plume have <br />' not been delineated The north and south limits of the plume appear to be defined, samples <br /> collected from MW-2 (south) and MW-3 (north) have not contained detectable <br />' concentrations of petroleum hydrocarbons since ground water monitoring began <br />' G.U. RECOMMENDATIONS <br /> Based on the results of this and previous investigations, AGE recommends continued quarterly <br />' monitoring of the groundwater monitoring network The next monitoring event should be scheduled <br /> for February 2002 In addition,AGE recornmeds performing the work proposed in Monitoring Well <br /> Installation Work Plan Addendum, dated 10 September 2001,prepared by AGE The scope of work <br /> ' includes advancement of three soil probe borings and mstallation of two monitoring wells <br /> ' 7.4 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 /> upon analytical results provided by an independent laboratory Evaluations of the hydrogeologic <br /> ' conditions at the site have been made from a limited number of available data points (i a monitoring <br /> wells, ground water samples) and subsurface conditions may vary away from these data points No <br /> other warranty, expressed or implied, is made as to the professional recommendations contained in <br /> ' this report <br /> 1 <br /> • <br /> ' Advanced GeeEnvironmental,Inc <br /> 1 <br />