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11 October 2019 <br />AGE Project No. 19-4782 <br />Page 14 of 14 <br />11.0. MITIGATION METHODS PROPOSED <br /> <br />To mitigate any known or potential future impacts to soil and groundwater of nitrate from <br />the proposed septic system, the following mitigations could be implemented: <br /> <br /> Maximize wastewater hold time where practical (retention). <br /> Avoid use of bioattenuation chemicals (bleach etc.). <br /> Properly and regularly maintain property septic systems. <br /> Use EHD criteria for sizing the septic disposal field. <br /> <br />If re-location or expansion of leach fields becomes necessary, leach lines should include <br />high organic substrates under and surrounding the lines installed. <br /> <br /> <br />12.0. CONCLUSIONS <br /> <br />Based on this Soil Suitability and Nitrate Loading Study, AGE concludes the following: <br /> <br /> All approved septic system use should follow the EHD On-Site Waste Disposal <br />Standards; the planned septic system should be a minimum of 100 feet from any <br />water supply well. <br /> An alternate source of potable water will need to be identified or a new domestic <br />water well will need to be installed on the subject property to provide water to the <br />planned development. The existing water supply well at 17699 ST RT 120 cannot <br />be used (San Joaquin County Community Development Title, Section (9- <br />1115.8(b)) <br /> <br /> <br />13.0. LIMITATIONS <br /> <br />Our professional services were performed using that degree of care and skill ordinarily <br />exercised by environmental consultants practicing in this or similar localities. The findings <br />were based on field testing results. Evaluations of the hydrogeologic conditions at the site <br />for the purpose of this investigation were made from a limited number of available data <br />points (i.e. test hole and field data) and subsurface conditions may vary away from these <br />data points. No other warranty, expressed or implied, is made as to the professional <br />interpretations, opinions and recommendations contained in this report.