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i <br />(: 22 April 2008: <br /> AGUE-NC Project No. 96-0254 <br /> Page 3.6f 3 <br /> S.Q. RECOMMENDATIONS <br /> Based on the conclusions presented in thin report,AGE recommends; <br /> • <br /> Revision ofthe sampling'frequency ofthe Ground Water Monitoring:Program as follows.due � <br /> io lack of his000al detecti. . of target compounds in the Moo ty of the site-related <br /> • rnorzitoring wells: <br /> uarterl momtorin and sam lin MW-1B and MW_A..; <br /> Q y � p ' ���� <br /> + S� I-annual.monitoring and sampling:;MW-2B; <br /> • AnnualMom ont gand sampling:N1W-1A,MW, -M,:1VIW-3,MW-4 thmu h. <br /> MW-7,and GLMW-3. <br /> • Continuedground watermonitoring.The first quarter 2008 monitorittg event wasperfonned <br /> in 19 February 2008. <br /> • Installatia additional monitoring wells to gain better resolution of the lateral extent of <br /> petroleum hydrocarbon impacts to shallow ground water. <br /> Currently,the plume ofpetroleumhydrocarbonimpacts is monitored by a network of broadly ! <br /> distributed monitoring wells; the majority of the monitoring wells are located relatively f <br /> distant from the source area,and outside the area of impact,therefore,additional monitoring <br /> wells are recommended to; 1) determine and assess the boundaries of the plume; ) <br /> determine the effect of the soil remedial action on the plume of impacted ground water <br /> through comparison of the current level of impacts,at select locations,to historical data from <br /> grab ground water sample locations collected prior to the soil remedial action in 2003;and <br /> 3) allow for..the collection of soil samples for remediation feasibility testing ( .e., ozone , <br /> injection bench-scale test), } <br /> i <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 upori i <br /> analyticalresults provided by an independent laboratory.;Eval�uation.of the]�ydrogez�logic conditions: <br /> at the site for the purpose of this investigation was made from a limited number of available data. <br /> points(egg.,groundwater samples)and subsurface conditions may vary away from thesedata points. 1 <br /> No other warranty,expressed or in ipilied,is-inade as to the professional.interpretatiolis;opinions and <br /> recoitnmiendatioris.contained in this.report <br /> Ad GmEhArbanteetsl,:Ine:: � <br />