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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: Proposed future on-site sources of nitrate to groundwater would include the existing agricultural use. This report also investigates the effect of a three bedroom single family residence and two bedroom accessory dwelling unit on each of the proposed parcels. A wastewater flow of 100 gpd for primary bedrooms and-50-gpd for secondary bedrooms was used for the estimate. Given these quantities each parcel could anticipate a waste loading of 350 gpd. A nitrogen concentration of 35 mg/L-N was used for the wastewater. A denitrification value of 30% was used for the underlying top soils as a conservative estimate of the infiltrative soils. 5.5 Calculate mass balance of nitrogen loading considering all potential sources identified using Hanztch/Finnemore equation: Using the data mentioned in this report and the attached soil suitability study, the mass balance of the site was calculated. This was done using the Hanztch/Finnemore formula. Based on this formula, the mass balance for the 80.9 acre parcel (Parcel 1) is 0.06 mg/L-N and 0.07 mg/L-N for the 70 acre parcel (Parcel 2). (See Appendix.) 6.0 Discussion of nitrate loading results relative to proposed method of wastewater disposal. 6.1 Discussion of total nitrate impact from proposed project: Based on the above calculations and a minimum contaminant level (MCL) of 10 mg/L-N the proposed project would have a minimal effect on total nitrate loading for the site. 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 is within the maximum contaminant level of 10 mg/L-N, no mitigation measures are proposed at this time. 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 hole and performed the percolation test. It was assumed that the test hole and percolation test and the compiled data results are representative of the subsurface conditions in the general area. The site will comply with the San Joaquin County requirement by having a project site with less than 10.0 mg/L-N with the proprietary measure. The values used for calculations assume that the nitrate concentration of rainfall is 1 mg/L-N as previously noted (Hanztch/Finnermore). Analyzing all the compiled data, the site is adequate for the proposed use.