Laserfiche WebLink
30 October 1998 <br /> AGE Project No. 95-0118 <br /> Page 6 of 6 <br /> 4.0. CONCLUSIONS AND RECOMMENDATIONS <br /> 4.1. CONCLUSIONS <br /> Based upon results of ground water monitoring well sampling, AGE concludes: <br /> • The relative ground water elevation has risen nearly 3 feet during the last quarter. <br /> • The hydrocarbon on concentrations in the dissolved plume have decreased in monitoring wells <br /> MW-2, MW-3 and in air=sparging well IAS-2 since the previous monitoring event. <br /> The concentrations of BTEX compounds have also.decreased in the wells with impacted <br /> ground water. MTBE has been detected and confirmed in well MW-2. <br /> • Petroleum hydrocarbon-impacted soils were encountered widespread in the saturated zone <br /> and in the vadose zone beneath the maintenance building at the site. <br /> if 4.2. RECOMMENDATIONS <br /> Based upon the results of the investigation, AGE recommendations: <br /> E:>=1 <br /> -- <br /> The next quarterly ground water sampling event should be scheduled for October 1998. <br /> Initiation of Corrective Action,including in-situ air sparging(IAS)combined with soil vapor <br /> r.d <br /> extraction. <br /> 5.0. 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. Evaluations of the geologic/hydro geologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of <br /> available data points (i.e. monitoring wells, soil and 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 /> Advanced GeoEnvironmenlal,Inc. <br /> -1 <br /> 1 <br />