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10 May 2007 <br /> AGE-NC Project No. 00-0769 <br /> Page 8 of 8 <br /> • Continued quarterly monitoring of the well network; thenextquuterlymonitoringevent was <br /> scheduled for April 2007 . <br /> Establishment of an annual well monitoring cycle for well MW-9, in place of quarterly <br /> monitoring, since contaminants of concern have not been detected from ground water <br /> samples collected from MW-9 for ten consecutive quarters. <br /> • Implementation of the Additional Subsu face Investigation and Interim Remediation Work <br /> Plan, prepared by AGE and dated 27 December 2005 , to better define the plume off-site <br /> vertically and laterallyand to begin ground water remedi ation activities, including soil vapor <br /> extraction and cone penetration tests. <br /> • Preparation of Site Conceptual Model to characterize the petroleum hydrocarbon source(s), <br /> fate and transport mechanisms and potential receptors. <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 upon <br /> analytical results provided by an independent laboratory. Evaluation of the hydrogeologic conditions <br /> at the site for the purpose of this investigation was made from a limited number of available data <br /> points (i.e. ground water samples) and subsurface conditions may vary away from these data points. <br /> No other warranty, expressed or implied, is made as to the professional interpretations, opinions, and <br /> recommendations contained in this report. <br /> Adtmnced GwEnvironmental, Inc. <br />