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(Plate 13). A statistical error of 59 percent is associated with this value. The two <br />stations are then averaged, for a regional deep percolation value of 5.74 inches. <br />Quality of Rainwater <br />Hantzsche and Finnemore listed 1 mg/L-N as the nitrate concentration of rainwater for <br />their original calculation; in the past, Live Oak has also utilized this value for the nitrate <br />loading calculation. <br />To determine a more accurate local value, Live Oak has collected rainwater during <br />several recent storm events in Lodi. <br />Each sample was collected in a clean, dry, <br />stainless steel bowl, then decanted into a plastic container and placed on ice for <br />transport. The samples were analyzed <br />for nitrate by FGL Environmental of Stockton. <br />The results of the rainwater sampling are as follows: <br />Table 3. Rainwater Nitrate Concentration <br />Date <br />Nitrate (mg/L-N) <br />5/17/2019 <br />0.4 <br />5/19/2019 <br />0.2 <br />3/16/20 <br />0.2 <br />5/18/20 <br />0.4 <br />1/27/21, 10:00 <br />0 (Non -detect) <br />1/27/21, 19:30 <br />0 (Non -detect) <br />1/29/21 <br />0.2 <br />2/11/21 <br />0 (Non -detect) <br />2/12/21 <br />0.1 <br />10/25/21 <br />0 (Non -detect) <br />12/14/21 <br />0 (Non -detect) <br />Average <br />0.136 <br />Live Oak then averaged the concentrations of the 11 samples, for a value of 0.136 <br />mg/L-N to represent the nitrate concentration of rain. <br />LOGE 2203 Page 10 <br />