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5.3 Description of all current on-site sources of nitrate to soil and groundwater and the contribution of nitrate load from these sources to the project site: Currently all parcels except the parcel created by lot line adjustment are on bare ground and don't have any nitrates that would be resulting from the natural ground. Per the results of 598 N. Hewitt Road found above Nitrates are moderate for the existing house. 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 future use of the site will remain consistent to allow use in the designated zone. It was assumed each parcel had a residence with 3 bedrooms to approximate the amount of people that could generate wastewater flow. It was conservatively assumed that 100 gal/day would be generated for the first bedroom and 50 gal/day subsequently for every other bedroom, generating at a total of 200 gallons/day. The site is expected to be able to handle up to 350 gallons/day, making the current flows sustainable. The Designated Remainder will be 2.0 acres in size and the other parcels larger than 4.0 acres. All parcels are bare lots. The bare lots would have no problem with handling the flow rates and it was assumed that each lot had a 3 bedroom house. The average total nitrogen concentration of domestic wastewater is about 20-85mg/L-N, although 35-45mg/L-N is a better approximation (Crites and Tchnobanglous). The value selected for this site was 45mg/L-N assuming this site shall experience a larger concentration. 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 soil type on site and the high percolation rates, this site's soil has moderate levels of denitrification. It is expected that a site with soil of these characteristics shall have approximately about 10% - 15% of denitrification. The value used for this site was 15%. 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 2.0 acre parcel can contain a Nitrate load (NC) of 7.02 mg/L-N, a 4.1 acre parcel can contain a Nitrate Load (NC) of 4.24 mg/L-N, a 4.5 acre parcel can contain a Nitrate Load (NC) of 3.98 mg/L-N, a 4.7 acre parcel can contain a Nitrate Load (NC) of 3.86 mg/L-N, and a 5.8 acre parcel can contain a Nitrate Load (NC) of 3.35 mg/L-N when the site is generating its peak flows. (350 gallons/day) Nitrate load (NC) of 3.72 MG/L-N. 3