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22 February 2000 <br /> AGE-NC Project No 95-0128 <br />' Page 5 of 5 <br /> Based on results of the 31 January 2000 investigation, AGE concludes <br /> • Ground water currently being monitored on the subject site has been impacted by the <br /> unauthorized release of fuel hydrocarbons from the former UST system that was operated on <br /> the site The upgraded UST system currently in operation on the site is not known to have <br /> contributed to the problem <br />' a Ground water has been Impacted by both petroleum hydrocarbons and MTBE <br /> • The least impacted ground water was sampled in the up-gradient wells,MW6 and MW7, and <br />' in the deeply screened wells MWI, MW2 and MW3 <br /> • The most intensely impacted ground water has been sampled in the down-gradient wells, <br />' MW4 and MW5 <br /> • Impacted ground water appears to be migrating off-site <br /> I ' <br /> 5.0 RECOMMENDATIONS <br /> Based on the results of these investigations, AGE recommends that quarterly monitoring of the <br /> ground water monrtonng network on the site continue AGE has proposed locations to the PHS-EHD <br /> for additional ground water monitoring wells with the proposed locations based on Mown <br /> distribution of contaminants in ground water and historical ground water flow directions AGE is <br /> in the process of obtaining access agreement and permits to install the wells AGE believes that the <br />' site is currently sufficiently assessed such that preparation of a new or revised CAP for on-site <br /> remediation of soil and ground water should proceed <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 mainly <br /> upon analytical results provided by an independent laboratory Evaluations of the geologic conditions <br /> at Clic sitC have been inadc uvmri a lunited nambcr of a-vailabic data points (i c ri oratkormg wcils and <br /> soil borings), and subsurface conditions may vary away from these data points No other warranty, <br /> expressed or implied, is made as to the professional recommendations contained in this report <br /> IAdvanced GeoEnvironmental Inc <br />