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14 May 2000 <br /> AGE-NC Protect No 95-0137 <br /> Page 4 of 4 <br /> 4 0. CONCLUSIONS <br /> Based upon data collected during the first quarter of 2000, AGE concludes <br /> • The greatest concentrations of dissolved petroleum hydrocarbons to shallow ground water <br /> appears to be in the areas of MW-2 and MW-3 <br /> • Analytical results of ground water samples collected from the air sparg>ng wells (VW-1B, <br /> VW-2B), screened between 30 and 35 feet bsg, indicate that the dissolved hydrocarbon <br /> extends at least 15 feet into the saturated zone <br /> • MTBE, reported at low concentrations in MW-3 and VW-la, does not appear to be <br /> widespread at the site However, TBA has been detected at several locations on the site <br /> 5.0. RECOMMENDATIONS <br /> Based upon ground A ater data collected from the site, AGE recommends the following <br /> • Installation and operation of a soil vapor extraction and in-situ air sparring network <br /> • The neat monitoring event should be scheduled for Late April 2000 The RFS and Jimco <br /> Truck Stop monitoring should be coordinated and data from both saes combined to develop <br /> a model of ground water flow and the lateral extent of dissolved hydrocarbons <br /> 60 LIMITATIONS <br /> Our professional sen Ices were performed using that degree of care and skill ordinarily exercised by <br /> en-%ironmental consultants practicing in this or similar localities The findings were based mainly <br /> upon analytical results provided by an independent laboratory Er aluations of the geologic conditions <br /> at the site have been made from a limited number of aN ailable data points (i e monitoring wells and <br /> �vater samples), and subsurface conditions may\ary aNvay from these data points No other warranty, <br /> e\pressed or Implied, Is made as to the professional recommendations contained to this report <br /> 4dafrnd Cu>EmirunmuNel Inc <br />