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CONCLUSIONS <br /> Based on the method and assumptions described, the result of the nitrate loading <br /> estimate indicates that the existing development on the Site should not cause a buildup <br /> of nitrates in the aquifer above 10 mg/L. In a worst-case situation, the maximum <br /> buildup of nitrates in the aquifer from the use of on-site septic systems is predicted to be <br /> 4.0 mg/L-N for Parcel 1 and 6.8 mg/L for Parcel 2. <br /> The depth of ground water based on recent aquifer levels is estimated to be 105 to 108 <br /> feet below ground surface. The ground-water flow is to the east at a rate of <br /> approximately six feet per mile for fall 2016; no rate could be calculated for spring 2016. <br /> Maps of historical high water levels experienced in spring of 1983 and 1999 indicate a <br /> depth to water beneath the Site of approximately 75 to 77 feet. <br /> Live Oak collected a water sample from the domestic well on the Site on November 13, <br /> 2018. Nitrate was detected in the sample at a concentration of 7.2 mg/L-N. DBCP was <br /> not detected in the sample. <br /> Because of the favorable result of the nitrate loading calculation, no nitrate mitigation is <br /> recommended at this time. <br /> LOGE 1916 Page 11 <br />