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1 <br />' 05 November 2002 <br /> AGE-NC Project No 96-0229 <br />' Page 5 of 5 <br />' • Increasing MTBE concentrations have been reported from MW-1 OA since at least March <br /> 2001, suggesting that the plume of MTBE-impacted ground water is migrating towards the <br /> northeast and beyond well MW-1 OA <br /> • The elevated concentrations of petroleum hydrocarbons detected in samples collected from <br /> wells MW-1, MW-2, MW-3, MW-6 and MW-7 indicate that these wells are within or near <br /> the dissolved petroleum hydrocarbon "core area' of the plume (Figure 4) <br />' 5.0. RECOMMENDATIONS <br /> Based upon data collected during May 2002, AGE recommends <br />' • Continued utilization ofwells MW-1 through MW-10€oruarterl ground watermonitorin <br /> � Y 1�' g <br /> and sampling <br /> • Continued ground water monitoring of the subject site concurrently with the Pacific Mini <br /> Mart (4511 Pacific Avenue) <br /> • Performance of a receptor survey to locate potential receptors within 2,000 feet of the site <br /> • Conducting a feasibility analysis of remediation alternatives based on site hydrogeologic <br /> characteristics, and preparation of a problem assessment report (PAR) upon completion of <br /> feasibility studies <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 hydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of <br /> available data points (e g ground water samples), and subsurface conditions may vary away from <br /> these data points No other warranty, expressed or implied, is made as to the professional <br /> interpretations, opinions and recommendations contained in this report <br /> Advanced GeoEnviron mental,Inc <br />