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12 June 2008 <br /> AGE-NC-07-1581 <br /> Page 16 of 17 <br /> 10.0. TOTAL NITRATE IMPACT FROM PROPOSED PROJECT <br /> Based on the assumptions of the report,proposed NO3N mass of wastewater and the calculations <br /> of the NO3 N loading predicted, the proposed development should not negatively impact NO3 N <br /> C�. loading rates within the aquifer.The soil at the site appear to be adequate for nitrate degradation and <br /> proper leaching of wastewater. <br /> 11.0. MITIGATION METHODS PROPOSED <br /> To mitigate any known or potential future impacts to soil and ground water from nitrate from i <br /> proposed new development and increased septic usage, the following mitigations could be <br /> i <br /> implemented: <br /> • Maximize wastewater hold time where practical; <br /> Avoid use of bioattenuation chemicals (bleach etc.); <br /> 7a Properly and regularly maintain property septic systems; <br /> • If re-location or expansion of leach fields becomes necessary, leach lines should <br /> include high organic substrates under and surrounding the lines installed. <br /> 12.0. CONCLUSIONS <br /> Based on the above referenced Soil Suitability and Nitrate Loading Study, AGE concludes the <br /> following: <br /> • All proposed and approved septic system use and construction should follow the EHD On- <br /> Site Waste Disposal Standards. <br /> • Site redevelopment is appropriate with the use of the newly installed multiple-use water <br /> supply well and existing septic systems. <br /> Advanced GeoEnvironmentai,Inc. <br />