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r29 September 1995 <br /> AGE-NC Project No 95-0139 <br /> y Page 7 of 7 <br />' 5 2 PETROLEUM HYDROCARBON IMPACTED-GROUND WATER <br /> Concentrations of TPH-g and TPH-d in MW-1 increased between December 1994 and June 1995, <br />' from 2,600 to 3,600 ppb and from 450 to 1,400 ppb, respectively However, during the same period, <br /> concentrations of BTE&X decreased The ground water flow direction and gradient have remained- <br /> consistent at the site TPH-g and ethylbenzene were detected in the down-gradient well (MW-4) <br />' during the June sampling event No petroleum hydrocarbons were detected in MW-2 or MW-3, <br /> indicating that the plume remains sufficiently defined at the eastern and southern portion of the site <br /> However, ground water plume may be migrating towards MW-4 in a northerly direction <br /> 6.0. LBIffATIONS <br />' Our professional servmces 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 geologicmydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of available <br /> data points(i a monitoring wells, soil samples) and subsurface conditions may vary away from these <br /> lie data points No other warranty, expressed or implied, is made as to the professional <br /> recommendations contained in this report <br /> I ' <br /> I <br />