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08 December 1998 <br /> AGE-NC Project No. 95-0109 <br /> Page 5 of 5 <br /> 1998 monitoring event. <br /> • Nutrient concentrations and bacterial counts increased significantly in MW-14. Only a small <br /> change in bacterial counts was observed in MW-9. <br /> • The site geology consists primarily of interbedded silt and sand. Medium to coarse sand is <br /> present at the current ground water/vadose zone interface. <br /> 5.0. RECOMMENDATIONS <br /> Based upon data collected from the site, AGE recommends: <br /> • Additional hydrogen peroxide should be added to monitoring wells where concentrations of <br /> dissolved oxygen remain low. <br /> • The next quarterly ground water monitoring at the site should be scheduled for December <br /> 1998. In accordance with the Revised Monitoring and Reporting Program,monitoring wells <br /> MW-6, MW-7, MW-8, MW-9, MW-11, MW-12 and MW-14 will be sampled at that time. <br /> • Samples will be analyzed for TPH-g, BTE&X and oxygenated compounds. <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 field <br /> measurements and analytical results provided by an independent laboratory. Evaluations of the <br /> geologic/hydrogeologic conditions at the site for the purpose of this investigation are made from a <br /> limited number of available data points (i.e. 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 recommendations contained in this report. <br /> • <br /> Advanced GeoEnvironmental,Inc. <br />