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hp , <br />{{1{ a <br /> i <br /> , 1 <br /> 15 October 2000 <br /> r w AGE-NC`Prolect No 96-0232 <br /> i Page15of15 <br /> a occurrences_ <br /> During the August 2000 monitoring event, MTBE was not detected in any of the momtoring well , <br /> samples(MW-8 through MW-13)collected from the Primary Aquifer Zone or the Secondary Aquifer <br /> Zone <br /> i N <br /> IAGE interprets the results of all work completed to indicate the release of hydrocarbons and MTBE <br /> occurred in the areas of the fuel dispensers, UST pit and/or storm dram,migrated through the First <br /> Zone and upper Second Zone to the Rocky's Restaurant domestic well, at which point it apparently <br /> migrated vertically to the Rocky's Upper, Secondary Aquifer and Primary Aquifer Zones <br /> Ground water elevation versus ground water monitoring dates (hydrograph) was plotted for <br /> monitoring wells MW-2, MW-6A and MW-6B, all three plots depict decreasing ground water <br /> elevations since the 15 May 2000 monitoring event <br /> 1 <br /> 8.0 RECOMMENDATIONS <br /> Based upon data collected from the site, AGE recommends <br /> • Continued quarterly ground water monitoring and sarnplmg of morutonng wells MW-1 <br /> through MW-13, municipal water wells CSA-1 and CSA-2 and domestic water wells DW-1 <br /> and RDW-1 <br />' Continued coordinated quarterly ground water sampling events with Three B's Truck Plaza <br /> • Installation of fuel-dispenser containment pans beneath each fuel dispenser at the Flag City <br />' Chevron site <br /> • Continued ground water extraction from EW-1 (interim remediation measures)to control and <br /> reduce MTBE- impact in groundwater <br /> s T <br />' 9.0. L,EMTATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or sin lar localities The findings were based mainly <br />' upon analytical results provided by an independent laboratory Evaluations of the geologic/hydro- <br /> geologic conditions at the site for the purpose of this investigation are made from a limited number <br /> of available data points (ground water samples), and subsurface conditions may vary away from <br /> . these ,data points No other warranty, expressed or implied, is made as to the professional <br /> recommendations contained in this report <br /> Advanced GeoEnvironmeutai,Inc. <br /> 1 <br /> � i <br />