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i I I 1 � I r r I 15 September 2003 I tti ` l 'AGE-NC Project No 97-0333 Page 11 of 11 r t i i • Continued ground water extraction (interim ground water remediation) from well EW-1 I' I Generally,the core of the dissolved MTBE-plume appears to located in the First Zone Aquifer within ' the area of wells EW-1,MW-2,MW-3, MW-6 and MW-7A, outside of the dissolved MTBE-core area, only low to very low, MTBE concentrations were detected on-site and off-site towards the northwest in First Zone, Second Zone and Third Zone Aquifers Based on the data collected during Ir ' the second quarter 2003,additional,ground water monitoring wells are not warranted at this time and I the existing monitoring well network may be sufficient to complete a site Problem Assessment Report (PAR) I I t b.0. LIMITATIONS Our professional services were performed using that degree of care and skill ordinarily exercised by environmental consultants practicing in this or similar localities The findings were based mainly upon analytical results provided by an independent laboratory Evaluations of the hydrogeologic conditions at the site for the purpose of this investigation are made from a limited number of I '• available data points(ground water samples), and subsurface conditions may vary away from these data points No other warranty,expressed or implied,is made as to the professional interpretations, opinions and recommendations contained in this report I r I II I I r ar I I I r I I , I 'll I I 'I I I , ' I 1 I I � rrl i �I f 6• � ' I, F Advanced GeoEnvironmental,Inc I ! I I I i t 11 11 I} I I kll I I I � 1 r II I r ` ' f f I I pIE 111 i II f Ir I I Ili II II II i rl 'll I,I 111 ' I rl I I I 4111