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(7) Evaporation based on surface area, monthly evaporation, and pan coefficient <br /> (columns 4, 5, and 6). <br /> (8) Monthly runoff generation from composting operations. Based on 90% runoff <br /> from half of the composting pad (bare concrete) and 50% runoff from the other <br /> half of the composting pad, also concrete (windrows and curing area). <br /> (9) Pond volume calculated by adding to the previous month's volume, (column 9), <br /> columns (3) and (8) and subtracting columns (2) and (7). <br /> (10) Pond depth from the lowest point, based on the calculated pond volume (column <br /> 9) and derived from Table C-4. <br /> TABLE C-4 Evaporation Pond <br /> (1) Pond depth from the lowest point used to calculate the surface area and pond <br /> volume on an interval of 0.20 feet. <br /> (2) Surface area used for evaporation (column 7, Table C-3). Calculated from the <br /> pond geometry and depth, column (1). <br /> (3) Pond volume calculated from pond geometry and depth. Used by Table C-3 to <br /> return a corresponding depth for column (10). <br /> (4) Same as column (1). <br /> (5) Same as column (2). <br /> LAMOJECrO9746"C".TCY C-5 Dw=*"16,1993 <br />