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Table 3. Rainwater Nitrate Concentration <br />Date Nitrate (mg/L-N) <br />5/17/2019 0.4 <br />5/19/2019 0.2 <br />3/16/20 0.2 <br />5/18/20 0.4 <br />1/27/21, 10:00 0 (Non-detect) <br />1/27/21, 19:30 0 (Non-detect) <br />1/29/21 0.2 <br />2/11/21 0 (Non-detect) <br />2/12/21 0.1 <br />Average 0.17 <br />Live Oak then averaged the concentrations of the nine samples, for a value of 0.17 <br />mg/L-N to represent the nitrate concentration of rain. <br />Because the San Joaquin County Environmental Health Department has requested that <br />local and recent data be utilized wherever possible, the concentration of the Lodi <br />rainwater been selected for use in the nitrate loading calculation. <br />Quantity and Quality of Domestic Wastewater <br />Mr. Martin's existing house on Parcel A has three bedrooms, and no new construction is <br />anticipated. Parcel B is undeveloped, and no construction is anticipated. <br />Based on the assumption of the nitrate loading method that only septic systems should <br />be considered for the calculation, the wastewater flow from the proposed future use of <br />Parcel B will be zero. For the purpose of the nitrate loading analysis, however, a <br />theoretical five-bedroom primary residence and a three-bedroom second unit dwelling <br />are considered for each parcel. These are considered so that, should the owner at <br />some point in the future decide to build on the land, nitrate loading will have been <br />addressed. <br />Crites and Tchobanoglous (1998) list a typical flow rate of 50 to 70 gallons per person <br />per day for an individual residence. In the past, San Joaquin County Environmental <br />Health Department has requested that the flow rate be calculated as 140 gallons per <br />LOGE 2121 Page 11