2020-05-28_HYDROLOGY - M2001005

• Permit No: M2001005
• IBM Index Class Name: Hydrology
• Doc Date: 5/28/2020
• Doc Name: Substitute Water Supply Plan
• From: DWR
• To: Bishop-Brogden Associates, Inc.
• Email Name: TC1
• Media Type: D
• Archive: No

Table 1
Castle Concrete Aggregates-Grisenti Pit
2-Year Projected Depletions from Mining Operations
Dust Reclamation Exposed Water Surface First-Fill of Total Unlagged Total Lagged
Production Control Irrigation Use Exposed Ground Depletion Depletion
Mined Water Gross Total Effective Net Water Area Net Evaporation volume Phase 2 from Mining from Mining
Material Consumed Phase 1 Phase 2 Evaporation Precipitation Precipitation Evaporation Phase 1 Phase 2 Phase 1 Phase 2 Total �nlagged Operation Operation
(x 1000 tons) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ft) (ft) (ft) (ft) (acres) (acres) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
Month [1] [2] [3] [4a] [4h] [5] [6] [7] [8] [9a] [9b] [10a] [1 Ob] [1 Oc] [11] [12] [13]
Apr-20 0.00 0.00 0.29 0.00 0.00 0.34 0.11 0.08 0.26 24.0 22.1 6.25 5.75 12.00 19.81 32.10 30.11
May-20 0.00 0.00 0.30 1.11 3.89 0.45 0.13 0.09 0.36 24.0 22.7 8.66 8.19 16.85 24.89 47.04 42.46
Jun-20 0.00 0.00 0.29 1.11 3.89 0.55 0.10 0.07 0.49 24.0 23.3 11.66 11.32 22.98 27.96 56.22 53.15
Jul-20 0.00 0.00 0.30 1.11 3.89 0.57 0.15 0.11 0.46 24.0 24.1 11.11 11.15 22.26 28.79 56.35 56.26
Aug-20 0.00 0.00 0.30 1.11 3.89 0.51 0.16 0.11 0.40 24.0 24.7 9.50 9.78 19.27 19.71 44.28 47.67
Sep-20 0.00 0.00 0.29 1.11 3.89 0.38 0.09 0.06 0.32 24.0 25.1 7.65 8.01 15.66 12.46 33.40 36.59
Oct-20 0.00 0.00 0.30 1.11 3.89 0.26 0.07 0.05 0.21 24.0 25.3 5.07 5.34 10.41 10.16 25.87 28.36
Nov-20 0.00 0.00 0.29 0.00 0.00 0.15 0.06 0.04 0.11 24.0 25.6 2.61 2.79 5.40 10.16 15.85 19.18
Dec-20 0.00 0.00 0.30 0.00 0.00 0.11 0.04 0.03 0.08 24.0 25.8 2.02 2.17 4.19 10.35 14.83 15.39
Jan-21 0.00 0.00 0.30 0.00 0.00 0.11 0.03 0.02 0.09 24.0 26.0 2.10 2.28 4.38 7.81 12.48 13.09
Feb-21 0.00 0.00 0.27 0.00 0.00 0.13 0.04 0.03 0.10 24.0 26.2 2.51 2.74 5.26 5.20 10.73 11.09
Mar-21 0.00 0.00 0.30 0.00 0.00 0.21 0.08 0.06 0.15 24.0 26.4 3.69 4.06 7.75 1 7.87 15.93 14.37
20-21 Total 0.00 0.00 3.50 6.67 23.33 3.78 1.06 0.74 3.03 - - 72.84 73.58 146.42 185.16 365.08 367.73
Apr-21 0.00 0.00 0.29 0.00 0.00 0.34 0.11 0.08 0.26 24.0 26.6 6.25 6.93 13.17 8.01 21.47 19.53
May-21 0.00 0.00 0.30 1.11 3.89 0.45 0.13 0.09 0.36 24.0 26.8 8.66 9.67 18.33 8.01 31.64 28.27
Jun-21 0.00 0.00 0.29 1.11 3.89 0.55 0.10 0.07 0.49 24.0 27.1 11.66 13.17 24.83 8.01 38.12 35.74
Jul-21 0.00 0.00 0.30 1.11 3.89 0.57 0.15 0.11 0.46 24.0 27.1 11.11 12.54 23.65 0.00 28.95 31.22
Aug-21 0.00 0.00 0.30 1.11 3.89 0.51 0.16 0.11 0.40 24.0 27.1 9.50 10.73 20.22 0.00 25.52 26.72
Sep-21 0.00 0.00 0.29 1.11 3.89 0.38 0.09 0.06 0.32 24.0 27.1 7.65 8.64 16.30 0.00 21.59 23.01
Oct-21 0.00 0.00 0.30 1.11 3.89 0.26 0.07 0.05 0.21 24.0 27.1 5.07 5.72 10.79 0.00 16.09 18.06
Nov-21 0.00 0.00 0.29 0.00 0.00 0.15 0.06 0.04 0.11 24.0 27.1 2.61 2.95 5.56 0.00 5.85 9.24
Dec-21 0.00 0.00 0.30 0.00 0.00 0.11 0.04 0.03 0.08 24.0 27.1 2.02 2.28 4.30 0.00 4.60 5.22
Jan-22 0.00 0.00 0.30 0.00 0.00 0.11 0.03 0.02 0.09 24.0 27.1 2.10 2.37 4.47 0.00 4.77 4.74
Feb-22 0.00 0.00 0.27 0.00 0.00 0.13 0.04 0.03 0.10 24.0 27.1 2.51 2.84 5.35 0.00 5.62 5.32
Mar-22 0.00 0.00 0.30 0.00 0.00 0.21 0.08 0.06 0.15 24.0 27.1 3.69 4.17 7.86 1 0.00 8.16 7.28
21-22 Total 0.00 0.00 3.50 6.67 23.33 3.78 1.06 0.74 3.03 - - 72.84 82.01 154.84 24.03 212.37 214.34
Notes:
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uve mhnn-a has com[3] Dust control projections based upon historical maximum annual dust control uses,distributed uniformly through the year.Actual monthly dust control amounts may vary.
[4a],[4b]Reclamation irrigation use at Phases 1 and 2.
[5] Based upon NOAA Evaporation Atlas(45.4 inches per year),distributed monthly based upon State's SB-120 guidelines.
[6] Based upon average monthly precipitation data from the NOAA Climate Data(Canon City,1950-2003).
[7] Effective Precipitation equals 70 percent of total precipitation,based upon the State's SB-120 guidelines,[6]*0.70.
[8] Net Evaporation equals Gross Evaporation less Effective Precipitation,[5]-[7].
[9a],[9b] Projected exposed area at Phases 1 and 2 Total maximum exposed water surface area that may occur at Grisenti Pit during the plan period is 51 acres. Projected amounts based on estimated timing and infiltration
rates for the first-fill operations.
[10a],[1Ob],[10c] Equals[8]*[9a]for Phase 1 and[8]*[9b]for Phase 2.Total net evaporation equal to[10a]+[1 Ob].
[11]Total first-fill inflows to Phase 2 pit during the month.Projected amounts based on estimated timing and infiltration rates for the first-fill operations.
[12] Total Unlagged Depletion from Mining Operation equals[2]+[3]+[4a]+[4b]+[1 Oc]+[11].Amount conservatively assumes first-fill occurs by groundwater infiltration only.
[13] Total Lagged Depletions from Mining Operation are lagged using URF factors for each mining area,developed in IDS-AAS employing the glover method.The IDS-AAS inputs are provided in the 2020 SSP
renewal request.
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t- r 4 t f A INC. Printed On:4/16/2020 PJB