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5.5 Calculate mass balance of nitrogen loading considering all potential sources identified using Hantzsche/Finnemore equation: Using the data mentioned within this report and the attached Soil Suitability Report, the mass balance of nitrogen loading for this site was calculated, this was done using Hantzsche/Finnemore formula. Based on the Hantzsche/Finnemore equation Parcel 1 will be 2.05 acre site and would contain a Nitrate Load (Nc) of 7.68 mg/L-N. Parcel 2 will be a 2.06 acre site and would contain a Nitrate Load (Nc) of 7.65 mg/L-N. Parcel 3 will be a 4.18 acre and would contain a Nitrate Load (Nc) of 7.03 mg/L-N. Parcel 4 will be a 2 acre site and would contain a Nitrate Load (NC) of 7.82 and/L-N. The 1200 gal/day flow would avoid the site's nitrate load from surpassing the maximum contaminant level (MCL) of 10.0 mg/L-N for Nitrate in drinking water. 5.6 Calculate impact of nitrogen loading from site project to down gradient wells, rivers and lakes, etc. The project would not have a significant impact on the down gradient wells, rivers and lakes as the proposed nitrates are moderate. 6.0 Discussion of nitrate loading results relative to proposed method of wastewater disposal 6.1 Discussion of total nitrate impact from proposed project: There are low possibilities that the percolating effluent could affect water conditions if nitrates are not reduced. The Hantzsche/Finnemore equation has an added to the factor of safety, which is not accounted for, as it does not include lateral disbursement in its calculations diminishing those risks. No additions should be made beyond the proposed improvements mentioned previously without an update to this report. 6.2 Description of the methods proposed to mitigate any known or future impact to soil and groundwater from nitrate and/or other constituents of concern, at and/or around the project site: The project, as described in this report, is sustainable by the site in current conditions. Additions or modifications to the site may require the addition of a wastewater treatment system. At the time an addition is proposed, this report should be updated to ensure the adequate improvements are made. 7.0 CONCLUSION AND RECOMMENDATIONS SECTION The conclusions of this report are based on the information provided regarding the proposed development, the use of the subject property, and the site conditions as they existed at the time we excavated our test holes and performed the percolation tests. It was assumed that the test holes and percolation tests and the compiled data results are representative of the subsurface conditions in the general area. The site would comply with the San Joaquin County requirement by having a project site with less than 10.0 mg/L-N. The values used for calculations assume that the nitrate concentration of rainfall is 1 mg/L-N as previously noted (Hantzsche/Finnermore). Also, the site contains denitrification processes and that based on uses the site effluent stream is 45 mg/L-N. Analyzing all the compiled data, the site is adequate for the proposed use. 4 ■t