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are the ones derived from any agriculture use, although the lot had been bare for more than 10 years. 5.4 Discussion of all proposed future on-site sources of nitrate to soil and groundwater and the contribution of nitrate load from these sources to the project site: The existing use for this site is limited agriculture as it is zoned. However, it has been undeveloped for the last 10 years without a significant change. The site is now proposing to install 12 living units on each five acre parcel. Based on the San Joaquin County Standards for any parcel with more than 5 living units, the approximate estimate of people per unit would be 2.5 people/unit. The County also expects that each person would generate 100 gallons/day of wastewater. Given these values, the twelve units would generate a total of 3,000 gallon/day. The 3,000 gallon/day reduced to 2,100 gallon/day per meeting with Steven Shih from EHD on August 12, 2021. The calculations are included in the appendix to determine the approximate nitrate load concentration the site would generate. To provide an approximate nitrate loading concentration, several parameters were selected below. There are no other proposed sources of nitrates that could affect the site. The average total nitrogen concentration of domestic waste water is about 20-85 mg/L-N, although 35-45 mg/L-N is a better approximation (Crites and Tchnobanglous). The value selected for this site was 35 mg/L-N.F The site will experience a process of denitrification as the soil naturally treats surface material through natural forms. Denitrification is a process that occurs when bacteria uses oxygen in the nitrate (NO3) and release nitrogen (N2) into the atmosphere. Denitrification can be variable to the type of soils, chemical properties, moisture content and other variables. Based on the clay material on site, this site soils shall have more moisture and organic material to assist in the denitrification process. It is expected that a site with soil of these characteristics shall have approximately about 30-45% of denitrification. The value used for this site was 30%. 5.5 Calculate mass balance of nitrogen loading considering all potential sources identified using Hanztch/Finnemore equation: Using the data mentioned within this report and the attached Soil Suitability Study, the mass balance of nitrogen loading for this site was calculated. This was done using Hanztch/Finnemore formula. Based on the Hanztch/Finnemore equation, a 5 -acre site would contain a Nitrate Load (Nc) of 13.18 mg/L-N. The site can handle approximately 600 gal/day. A flow surpassing that amount could cause an impact to the site's nitrate load and surpass the maximum contaminant level (MCL) of 10.0 mg/L-N for Nitrate in drinking water. Proposed flow would generate a higher nitrate loading concentration than allowed if no measure were to be set in place. For the site to be able to handle the proposed 2,100 gallons/day the project site shall implement proprietary measures to reduce the nitrate loading concentration to a value below 10 mg/L-N. 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 possibilities that the percolating effluent could affect water conditions if they were not properly treated. The Hanztch/Finnemore equation has an added factor of safety which is not accounted for, as it does not include lateral disbursement in its calculations diminishing those risks. However, the included safety factor would not be sufficient to reduce the nitrate load concentration below 10 mg/L-N.