Laserfiche WebLink
14 December 2011 <br /> AGE-NC Project No. 99-0682 <br /> Page 5 of 5 <br /> Figure 6. <br /> • Concentrations of contaminants generally decline vertically in the source area <br /> (MW-1 A and MW-8), with the exception of benzene and 1,2-DCA concentrations in <br /> well MW-8 (the benzene concentration in well MW-8 is almost ten times higher than <br /> in the shallower well MW-1A). Higher concentrations observed in well MW-8 maybe <br /> a result of historical deeper ground water conditions and/or a steep downward <br /> vertical gradient between wells MW-1 A and MW-8 (approximately 0.02 ft/ft). <br /> 6.0. RECOMMENDATIONS <br /> Based on the conclusions presented in this report,AGE recommends continuation of semi- <br /> annual ground water monitoring. <br /> Further, AGE recommends performance of a in-situ chemical oxidation pilot test as <br /> outlined in the AGE-prepared, Ground Water Remediation Feasibility Study Work Plan, <br /> dated 31 October 2011. Upon regulatory concurrence, AGE will begin performing the pilot <br /> test as outlined. <br /> 7.0. LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily <br /> exercised by environmental consultants practicing in this or similar localities. Findings were <br /> based upon analytical results provided by an independent laboratory. Evaluation of the <br /> hydrogeologic conditions at the site for the purpose of this investigation was made from a <br /> limited number of available data points (e.g., ground water samples) and subsurface <br /> conditions may vary away from these data points. No other warranty, expressed or implied, <br /> is made as to the professional interpretations, opinions and recommendations contained <br /> in this report. <br /> Advanced CeoEnvironmental,Inc. <br />