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' 20 March 2006 <br /> • AGE-NC Project No 95-0130 <br />' Page 14 of 13 <br />' 6.0. RECOMMENDATIONS <br /> Based upon the results of the fourth quarter 2005 investigation, AGE recommends <br /> • Continued quarterly groundwater monitoring of wells VW-1 C,VW-2A,VW-3A,MW-6(A- <br /> E), MW-7 (A-E) and MW-8 The First Quarter 2006 ground water monitoring event was <br /> 1conducted at the site on 28 February 2006 <br /> • Conduct future ground water monitoring events concurrently with the Knowles/Roek <br /> Property site (102 South Wilson Way) and the Arco AM/PM site (130 South Wilson Way), <br /> • Continued quarterly depth-to-water measurements in all monitoring wells at the site, but <br /> reduced ground water sampling frequency from a quarterly to a semi-annual program, AGE <br /> believes that continued quarterly ground water sampling from wells MW-1 through MW-5 <br /> at this stage of the investigation is not cost effective and will not provide enough useful <br /> information to supplement the ongoing investigation Semi-annual sampling events should <br /> be adequate to monitor ground water impact at these wells and should be re-evaluated on a <br /> semi-annual basis <br /> • A work plan(Additional Site Assessment Work Plan,dated 15 November 2005, for four(4) <br /> off-site CPT soil borings was previously submitted to the SJCEHD,the borings were located <br /> east and southeast of the site in the northbound lane of Wilson Way Upon SJCEHD approval <br />' of the work plan, AGE will submit all necessary permits, permit fees and schedule field <br /> work <br /> 7.0. 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 mainly <br /> upon analytical results provided by an independent laboratory Evaluations of the hydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of <br /> available data points (soil vapor samples, ground water samples), and subsurface conditions may <br />' vary away from these data points No other warranty, expressed or implied, is made as to the <br /> professional interpretations, opinions and recommendations contained in this report <br /> i <br />' Advanced GeoEnvironmental,Inc <br /> 1 <br />