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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 /> According to Mr. Swanson, the new mobile home will have two bedrooms. One non- <br /> resident employee will work at the storage facility six days per week for approximately <br /> 12 hours per day and will also have access to the restroom. No customer use of the <br /> restroom will be permitted. <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 /> bedroom per day to reflect maximum usage. On March 4, 2020, however, Michael Kith, <br /> of the San Joaquin County Environmental Health Department dictated a new procedure <br /> for calculating residential flow, developed in consultation with Norman Hantzsche <br /> (author of the 1992 paper discussed previously). He indicated that wastewater flow <br /> from a single-family residence should be calculated as 100 gallons per day (gpd) for the <br /> LOGE 2110 Page 10 <br />