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Table 2
<br /> Ready Mixed Concrete Company-Morton Lakes Mine and Holton Lakes Mine
<br /> Projected Mining Operations and Depletions
<br /> (all values in acre-feet unless specified,negative values are depletions,positive values are accretions)
<br /> Stages 1 2,6A,6B 3 and 4 Operations
<br /> Exposed Net Gravel Production Water Dewatering Total Downstream River Call Number of Out-of-
<br /> Ground Evaporation 4%Water 2%Water in Dust Pumping First Consumptive Lagged Priority Location Days Out- Priority
<br /> Month Water(ac) Volume (tons) (tons) Gravel Suppression Volume Fill Use Depletion of-Priority Depletions
<br /> 1 2 3a 3b 4 5 6 7 8 9 10 11 12 13
<br /> Mar-18 30.0 -4.32 0 119,658 -1.8 -1.2 -1317.5 0 -7.3 -9.2 31 -9.2
<br /> Apr-18 30.0 -7.28 0 144,973 -2.1 -1.2 -855.0 0 -10.6 -11.1 30 -11.1
<br /> May-18 30.0 -9.33 0 162,081 -2.4 -1.2 -883.5 0 -12.9 -12.9 31 -12.9
<br /> Jun-18 34.5 -15.39 0 162,081 -2.4 -1.2 -855.0 0 -19.0 -16.7 30 -16.7
<br /> Jul-18 36.5 -17.05 0 142,569 -2.1 -1.2 -883.5 0 -20.4 -18.9 31 -18.9
<br /> Aug-18 36.5 -15.08 0 163,952 -2.4 -1.0 -883.5 0 -18.5 -18.4 31 -18.4
<br /> Sep-18 36.5 -10.90 0 143,218 -2.1 -0.8 -855.0 0 -13.8 -15.5 30 -15.5
<br /> Oct-18 36.5 -7.55 0 133,298 -2.0 -0.8 -883.5 0 -10.3 -12.5 31 -12.5
<br /> Nov-18 36.5 4.01 0 103,217 -1.5 -0.5 -855.0 0 -6.0 -9.0 30 -9.0
<br /> Dec-18 1 36.5 -3.15 0 79,344 1 -1.2 -0.5 -883.5 0 -4.9 -6.9 31 -6.9
<br /> Mar-Dec -94.06 0.00 1,354,391 19.9 -9.6 9155 0 123.6 131.0 306 131.0
<br /> 2018
<br /> Shaded rows are projections.
<br /> [1] Total exposed ground water surface area in Stages 1,2,6A,6B,3 and 4.Comprised of dewatering ditches and the processing planVs wash water and settling pond.
<br /> [2] Net evaporation volume is equal to the net evaporation rate in Table 1,column 6 multiplied by the exposed ground water area in[1].
<br /> [3a]Gravel production in Stages 6A,6B,3 and 4 below the ground water table and in a dewatered state and subsequently washed,resulting in depletion that is 4%by weight.
<br /> [3b] Gravel production in Stages 6A,6B,3 and 4 that results in depletion that is 2%by weight.The gravel production may consist of the following:(1)material mined above the ground water table and
<br /> washed,(2)material mined below the ground water table and unwashed,or(3)stock piled material that is washed.
<br /> [4]Water contained in the mined gravel given in[3a] and[3b].
<br /> [5]Water pumped from Stage 1 and used for dust suppression,considered 100%consumptive.
<br /> [6] Dewatering pumping from Stages 1 and 2,discharged to Big Dry Creek,and 6A,6B,3 and 4 discharged to the South Platte.The lagged depletions will be replaced when dewatering stops.
<br /> [7] First fill of of any of the stages through the end of 2018 will occur during free river.
<br /> [8] Total consumptive use in Stages 1,2,6A,6B,3,and 4 is equal to[2]+[4]+[5]+[7].
<br /> [ ]
<br /> 9 Lagged depletion to Big Dry Creek of Stage 1 Consumptive Use,lagged over 5 months. Lagged depletion to Big Dry Creek of Stage 2 Consumptive Use,lagged over 14 months. Lagged depletions to
<br /> South Platte of Stage 6A,6B,3 and 4 Consumptive use lagged over 19 months,22 months,11 months and 16 months,respectively.
<br /> [10] Priority date of the predominant downstream call on the South Platte River.
<br /> [11] Location of the predominant downstream call on the South Platte River.
<br /> [12]Number of Days there was a downstream call on the South Platte River.
<br /> [13] Out-of-priority depletions is equal to the fraction of the total depletion that occurred when there was a call on the South Platte River,equal to[9]x(12]/#of days in month.
<br /> BBA 3/12/2018
<br /> water consultants BISHOP-BROGDEN ASSOCIATES, INC.
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