2020-09-02_HYDROLOGY - M1986015

• Permit No: M1986015
• IBM Index Class Name: Hydrology
• Doc Date: 9/2/2020
• Doc Name: Substitute Water Supply Plan
• From: DWR
• To: DRMS
• Email Name: JPL
• Media Type: D
• Archive: No

Table 4
Castle Aggregates-Pueblo East Pit Summary
Projected Depletion Analysis(June 2020-May 2022)
Surface Area Total Natural Vegetation Credit Net Pond Aggregate Initial Total Net
of Exposed Gross Gross Effective Effective Phreatophyte Phreatophyte Total Natural Evaporative Moisture Dust Fill Unlagged
Ground Water Evaporation Evaporation Precipitation Precipitation CU Reduction Vegetation Depletions Content Depletion Control Depletion Depletion
(ac) Rate(ft) (ac-ft) Rate(ft) Credit(ac-ft) Distribution Credit(ac-ft) Credit(ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft)
Month [1] [2] [3] [4] [5] [6] [7] 181 [y] [10] [11] [12] [13]
Jun-20 76.0 0.60 45.60 0.08 5.42 17.2% 4.98 10.40 35.20 0.00 0.91 79.8 115.91
Jul-20 76.0 0.63 47.88 0.11 7.45 18.1% 5.23 12.68 35.20 0.00 0.93 0.0 36.13
Aug-20 76.0 0.56 42.56 0.12 8.12 16.1% 4.65 12.77 29.79 0.00 0.93 0.0 30.72
Sep-20 76.0 0.42 3192 0.05 3.39 12.0% 3.49 6.87 25.05 0.00 091 0.0 25.96
Oct-20 76.0 0.29 22.04 0.04 2.71 8.3% 2.41 5.12 16.93 0.00 0.93 0.0 17.86
Nov-20 76.0 0.17 12.92 0.03 2.03 1.1% 0.33 2.36 10.56 0.00 0.91 0.0 11.47
Dec-20 76.0 0.12 9.12 0.02 1.35 0.0% 0.00 1.35 7.77 0.00 0.93 0.0 8.70
Jan-21 76.0 0.12 9.12 0.02 1.35 0.0% 0.00 1.35 7.77 0.00 0.93 0.0 8.70
Feb-21 76.0 0.15 11.40 0.02 1.35 0.0% 0.00 1.35 10.05 0.00 0.85 0.0 10.90
Mar-21 76.0 0.23 17.48 0.05 3.39 1.9% 0.55 3.94 13.54 0.00 0.93 0.0 14.47
Apr-21 76.0 0.38 28.88 0.07 4.74 10.9% 3.15 7.89 20.99 0.00 0.91 0.0 21.90
Mav-21 76.0 0.50 38.00 0.08 5.42 14.3% 4.15 9.57 28.43 0.00 0.93 0.0 29.36
Jun-21 76.0 0.60 45.60 0.08 5.42 17.2% 4.98 10.40 35.20 0.00 0.91 0.0 36.11
Jul-21 76.0 0.63 47.88 0.11 7.45 18.1% 5.23 12.68 35.20 0.00 0.93 0.0 36.13
Aug-21 76.0 0.56 42.56 0.12 8.12 16.1% 4.65 12.77 29.79 0.00 0.93 0.0 30.72
Sep-21 76.0 0.42 3192 0.05 3.39 12.0% 3.49 6.87 25.05 0.00 0.91 0.0 25.96
Oct-21 76.0 0.29 22.04 0.04 2.71 8.3% 2.41 5.12 16.93 0.00 0.93 0.0 17.86
Nov-1-1 76.0 0.17 12.92 0.03 2.03 1.1% 0.33 2.36 10.56 0.00 0.91 0.0 11.47
Dec-21 76.0 0.12 9.12 0.02 1.35 0.0% 0.00 1.35 7.77 0.00 0.93 0.0 8.70
Jan-22 76.0 0.12 9.12 0.02 1.35 0.0% 0.00 1.35 7.77 0.00 093 0.0 8.70
Feb-22 76.0 0.15 11.40 0.02 1.35 0.0% 0.00 1.35 10.05 0.00 0.85 0.0 10.90
Mar-22 76.0 0.23 17.48 0.05 3.39 1.9% 0.55 3.94 13.54 0.00 0.93 0.0 14.47
Apr-22 76.0 0.38 28.88 0.07 4.74 10.9% 3.15 7.89 20.99 0.00 0.91 0.0 21.90
May-22 76.0 0.50 38.00 0.08 5.42 14.3% 4.15 9.57 28.43 0.00 0.93 0.0 29.36
2020-2021 Total - 4.17 316.92 0.69 46.71 100.00% 28.94 75.65 241.27 0.00 11.00 79.80 332.07
2021-2022 Total - 4.17 316.92 0.69 46.71 100.00% 28.94 75.65 241.27 0.00 11.00 0.00 252.27
Notes:
[1]The maximum exposed ground water surface at the Pueblo East Pit under this SWSP is limited to 71.0 acres in Phases 1,2 and 7.
[2]Gross Evaporation Rate equals 4.17 feet per year,based upon NOAA Evaporation Atlas.Monthly distribution based upon SB-120 Guidelines.
[3]Gross Evaporation equals[1]x[2].
[4]Effective Precipitation Rate equals 70%of total precipitation,based upon NOAA Pueblo Memorial Airport weather station.
[5]Effective Precipitation Credit equals sum of column[5]in Tables 1-3.
[6]Phreatophyte CU distribution equal to monthly phreatophyte reduction credit divided by the total annual phreatophyte reduction credit.
[7]Phreatophyte Reduction Credit equals the sum of column[7]in Tables 1-3.
[8]Total natural vegetation credit equals[5]+[7].
[9]Net pond evaporative depletion equals[3]-[8].
[10]Annual production limited to 250,000 tons,or 7.38 ac-ft of depletions from 4%water content by weight of the mined aggregate removed from Phase 7. The monthly distribution is based upon past operating patterns.The actual monthly rate may vary
as long as the annual amount is not exceeded.
[11]Dust control depletions are assumed to be 100%consumptive and are based upon historical annual dust control pumping volumes.
[12]Total water required to fill Pueblo East Pit-Phase 1.
[13]Total net unlagged depletion equals net pond evaporation plus water loss with aggregate removal and dust control[9]+[10]+[11]+[12].
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C. 5/13/2020 1:18 PM PJ
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