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Table 2
<br /> Brannan Sand and Gravel Company-Morton Lakes Mine
<br /> Projected Mining Operations and Depletions
<br /> 2020 SWSP Amendment and 2021 SWSP Renewal Accounting
<br /> (all values in acre-feet unless specified,negative values are depletions,positive values are accretions)
<br /> Stages 1,21 6A,6B,4,6C/6D and 5 O erations
<br /> Exposed Net Gravel Production Water Dewatering Remaining Stage 4 Total Downstream River Call Number of Out-of-
<br /> Ground Evaporation 4%Water 2%Water in Dust Pumping Refill of Reservoir Consumptive Lagged Priority Location Days Out- Priority
<br /> Month Water(ac) Volume (tons) (tons) Gravel Suppression Volume Stage 2 Construction Use Depletion of-Priority Depletions
<br /> [3a] [3 ] [4] [G] [7] [ ] [10] [II [12] [13 [14][ ] [2]
<br /> Oct-2(} 17.7 -3.66 (} 140,000 -2.1 -2.0 -1348.5 0.00 -7,7 -8.4 31 -8.4
<br /> Nov-20 18.3 -2.01 0 85,000 -1.3 -1.2 -1305.0 0.00 -2.83 -7.3 -8.8 30 -8.8
<br /> Dec-20 19.3 -1.58 0 118,300 -1.7 -1.2 -1348.5 0.00 -2.83 -7.4 -8.3 31 -8.3
<br /> Jan-21 23.0 -1.97 0 65,000 -1.0 -0.5 -1333.0 -75.00 -7.07 -85.5 -46.8 31 -46.8
<br /> Feb-21 23.0 -2.46 0 75,000 -1.1 -0.5 -1204.0 0.00 -7.07 -11.1 -31.6 28 -31.6
<br /> Mar-21 23.0 -3.31 0 135,000 -2.0 -1.0 -1333.0 0.00 -8.13 -14.4 -19.6 31 -19.6
<br /> Apr-21 23.0 -5.58 0 145,000 -2.1 -1.0 -1290.0 0.00 -7.78 -16.5 -18.9 30 -189
<br /> May-21 23.0 -7.15 0 160,000 -2A -2.0 -1333.0 0.00 -7.07 -11.5 -19.6 31 -19.6
<br /> Jun-21 23.0 -10.26 0 165.000 -2.4 -2.0 -1290.0 0.00 -7.78 -14.7 -2 2.7 30 -22.7
<br /> Jul-21 23.0 -10.75 0 155,000 -2.3 -2.0 -1333.0 0.00 -7.42 -15.0 -23.0 31 -23.0
<br /> Aug-21 23.0 -9.50 0 165,000 -2.4 -2.0 -13 33.0 0.00 -3.54 -13.9 -18.4 31 -18.4
<br /> Sep-21 23.0 -6.87 0 145,000 -2.1 -1.4 -1290.0 0.00 -10.4 -12.3 30 -12.3
<br /> Oct-21 23.0 -4,76 0 150,000 -2.2 -1.0 -1333.0 0.00 -8.0 -10.0 31 -10.0
<br /> Nov-21 23.0 -2.53 761000 19,000 -2.5 -0.5 -1290.0 0.00 -5.5 -7.4 30 -7.4
<br /> Dec-21 23.0 -1.98 75,000 0 -2.2 -0.5 -1333.0 0.00 4.7 -6.2 31 -6.2
<br /> Eli<1 oC
<br /> -7.25 - 343,300 ->.1 -4.4 4002 0.0 -5.7 -22.4 -25.5 92 -25.5
<br /> Z020 Total
<br /> 2021 Dotal - -67.13 151,000 1.379,000 -24.7 -14.4 -15695 -75.0 -S5.Q -211.3 -236.5 365 -,I)o.5
<br /> Shaded rows are projections.
<br /> [1]Total exposed ground water surface area in Stages 1,2,6A,613,613,4 and 5.Comprised of dcwatering ditches and the processing plant's wash water and settling pond.
<br /> [2]Net evaporation volume is equal to the net evaporation rate in Table I,column 6 multiplied by the exposed ground water area in[I].
<br /> [3a]Gravel production in Stages 4,6061)and 5 below the ground water table and in a dewatered state and subsequently washed.,resulting ill depletion that is 4%by weight.
<br /> [3b]Gravel production in Stages 4,6C/6D,and 5 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 washed,(2)material
<br /> 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] `rater pumped from Stages 1 or 2 and used for dust suppression,considered 100°/o consumptive.
<br /> [6]Dewatcring pumping from Stages 1 and 2,discharged to Big Dry Creek,and 6A,6B,6D,4 and 5 discharged to the South Platte.The lagged depletions will be replaced when dcwatering stops.
<br /> [7]Refill of Stage 2 will occur in January 2021 unless free river occurs prior to the end of the year.
<br /> [8]Water used for compaction and dust control at Stage 4 for reservoir construction will occur beginning November 2020 and will continue through August 2021.Water will be pumped directly from the river and metered.
<br /> [9]Total consumptive use in Stages 1,2,6A,6B,3,4,6C/6D and 5 is equal to[21+[4]+[5]+[9].
<br /> Lagged depletion to Big Dry Creek of Stage 1 Consumptive Use.lagged over 5 months;Stage 2 Consumptive Use,lagged over 14 months;Stage 6A Consumptive Use,lagged over 19 months;Stage 6B Consumptive
<br /> [10]Use,lagged over 22 months;and Stage 5 Consumptive Use lagged over 2 months. Lagged depletions to South Platte of Stages 3,4 and and 6C/6D Consumptive uses lagged over 11 months,16 months,and 12 months,
<br /> respectively.
<br /> [11]Priority date of the predominant downstream call on the South Platte River.
<br /> [12]Location of the predominant downstream call oil the South Platte River.
<br /> [13]Number of Days there w is a downstream call on the South Platte River.
<br /> [14]Out-of-priority dkhletiotis h«lual to the fraction of the total depletion that occurred when there was a call on the South Platte River,equal to[10]x[13]/#of days in month.
<br /> BBA
<br /> 9'9''010
<br /> watcr consultants BISHOP-BROCDEN ASSOCIATES, INC.
<br />
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