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Morton Lakes Substitute Water Supply Plan Renewal <br /> January 10, 2025 <br /> Page 5 of 14 <br /> which was estimated based on the data from the Fort Lupton 2SE (ID 3027, record 1950- <br /> 1976) and Brighton 1 NE (ID 950, record 1976-2014) NOAA weather stations. The projected <br /> maximum monthly exposed groundwater surface area at each stage is described in Table A <br /> below: <br /> Table A - Maximum monthly exposed groundwater surface area (acres) <br /> Stage 5 Stage Stage Stage Stage Stage <br /> Stage 1 Stage 2 Total <br /> 6A 6B 6D 7A 7B <br /> 11.0 15.0 1.0 1.0 1.0 2.0 1.0 1.0 33.0 <br /> The net evaporation rate for the exposed water surface is estimated to be 2.92 acre- <br /> feet/acre, as shown on attached Table 1. Total net evaporation for this plan period is <br /> 96.32 acre feet, as shown on attached Table 2, Column 2. <br /> Mined Product <br /> In addition to the evaporation, water is lost with the mined product removed from the mine <br /> sites as shown in attached Table 2. Brannan projects that they will mine approximately <br /> 550,000 tons of gravel during this plan period from Stages 7A, and 7B within the lined pits <br /> which will result in a depletion of 2% by weight. The water lost from mined product is <br /> projected to total 7.97 acre-feet during 2025 as shown in Table 2, Column 4. <br /> Dust Suppression <br /> The estimated water used for dust suppression is 10.20 acre-feet during 2025, as shown in <br /> Table 2, Column 5. Brannan will pump water from Stage 2 for dust suppression purposes <br /> during this plan period. <br /> Dewaterin <br /> Minimal dewatering will occur in Stages 5, 613, 6D, 7A, and 7B from within the lined pits and <br /> such water is returned directly to the stream. Dewatering will occur at this site at a <br />