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a T n � -✓ 3 .`.. <br /> r <br />' 14 April 2006 <br /> . AGE-NC Project No 95-0184 <br /> Page 5 of 5 <br /> Appendix A <br /> • Based upon an effective vacuum potential of 0 1 inches of water, the calculated effective <br /> radius of Influence at the site for vapor well VW-5A, screened from 13 feet to 23 feet bsg <br />' will be approximately 23 6 feet,for vapor well VW-513, screened from 26 5 to 41 5 feet bsg, <br /> the radius of influence is calculated at 22 4 feet (Figure 4) <br /> 1 <br /> 5.0. RECOMMENDATIONS <br /> Based on the results of the Soil Vapor Extraction Pilot Test, AGE recommends <br />' Preparation of an Interim Remedial Action Work Plan for implementation of soil vapor <br /> extraction at the site AGE recominstalling an SVtextraction <br /> system for interim remediation <br /> utilizing all existing vapor wells (. - th�ofigh VW-5�'�apoints to remove and <br />' treat adsorbed contaminants In the most highly impacted area of the vadose zone (near <br /> former UST A) f <br /> �r <br /> 6.0. LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinanly 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 geologic conditions at <br /> the site for the purpose of this investigation was made from a limited number of available data points <br /> (soil gas samples) and subsurface conditions may vary away from these data points No other <br />' warranty, expressed or implied, is made as to the professional interpretations, opinions and <br /> recommendations contained in this report <br /> 1 ! <br /> 1 <br /> 1 <br /> I <br />' Advanced GeoEnvaronmental,Inc <br /> I <br />