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Mon
<br />Monthly
<br />Distribution
<br />( %)
<br />Potential
<br />Gross
<br />Evap
<br />(in)
<br />Groundwater
<br />Avg.
<br />Precip.
<br />(in)
<br />Evaporation
<br />Effect.
<br />Precip.
<br />(in)
<br />Net
<br />Evaporation
<br />(in)
<br />Net
<br />Evaporation
<br />(ac -ft)
<br />Water
<br />Production
<br />(Tons)
<br />Loss in Mined
<br />4.0%
<br />by Weight
<br />(Tons)
<br />Product
<br />Cubic
<br />Feet of
<br />Water
<br />Acre-
<br />Feet of
<br />H2O
<br />Days
<br />Dust Control
<br />Volume
<br />Gallons
<br />(ac -ft)
<br />Total
<br />w /drawal
<br />(ac -ft)
<br />Total
<br />Depletions
<br />(ac -ft)
<br />(1)
<br />(2)
<br />(3)
<br />(4)
<br />(5)
<br />(6)
<br />(7)
<br />(8)
<br />(9)
<br />(10)
<br />(11)
<br />(12)
<br />(13)
<br />(14)
<br />(15)
<br />(16)
<br />Nov
<br />4.0
<br />1.68
<br />0.83
<br />0.58
<br />1.10
<br />1.38
<br />29,000
<br />1,160
<br />37,179
<br />0.85
<br />30
<br />75,000
<br />0.23
<br />2.46
<br />-5.18
<br />Dec
<br />3.0
<br />1.26
<br />0.45
<br />0.32
<br />0.95
<br />ICE
<br />29,000
<br />1,160
<br />37,179
<br />0.85
<br />31
<br />77,500
<br />0.24
<br />1.09
<br />-3.68
<br />Jan
<br />3.0
<br />1.26
<br />0.50
<br />0.35
<br />0.91
<br />ICE
<br />29,000
<br />1,160
<br />37,179
<br />0.85
<br />31
<br />77,500
<br />0.24
<br />1.09
<br />-2.58
<br />Feb
<br />3.5
<br />1.47
<br />0.37
<br />0.26
<br />1.22
<br />1.52
<br />26,100
<br />1,044
<br />33,462
<br />0.77
<br />28.25
<br />70,625
<br />0.22
<br />2.50
<br />-2.31
<br />Mar
<br />5.5
<br />2.32
<br />1.14
<br />0.80
<br />1.52
<br />1.90
<br />29,000
<br />1,160
<br />37,179
<br />0.85
<br />31
<br />77,500
<br />0.24
<br />2.99
<br />-2.54
<br />Apr
<br />9.0
<br />3.79
<br />1.83
<br />1.28
<br />2.51
<br />3.14
<br />58,000
<br />2,320
<br />74,359
<br />1.71
<br />30
<br />75,000
<br />0.23
<br />5.07
<br />-3.24
<br />May
<br />12.0
<br />5.05
<br />2.48
<br />1.74
<br />3.32
<br />4.15
<br />61,625
<br />2,465
<br />79,006
<br />1.81
<br />3
<br />77,500
<br />0.24
<br />6.20
<br />-4.31
<br />Jun
<br />14.5
<br />6.11
<br />1.85
<br />1.30
<br />4.81
<br />6.02
<br />66,700
<br />2,668
<br />85,513
<br />1.96
<br />30
<br />75,000
<br />0.23
<br />8.21
<br />-5.60
<br />Jul
<br />15.0
<br />6.32
<br />1.46
<br />1.02
<br />5.30
<br />6.62
<br />67,425
<br />2,697
<br />86,442
<br />1.98
<br />31
<br />77,500
<br />0.24
<br />8.84
<br />-6.87
<br />Aug
<br />13.5
<br />5.69
<br />1.16
<br />0.81
<br />4.87
<br />6.09
<br />65,250
<br />2,610
<br />83,654
<br />1.92
<br />31
<br />77,500
<br />0.24
<br />8.25
<br />-7.55
<br />Sep
<br />10.0
<br />4.21
<br />1.19
<br />0.83
<br />3.38
<br />4.22
<br />61,625
<br />2,465
<br />79,006
<br />1.81
<br />30
<br />75,000
<br />0.23
<br />6.27
<br />-7.35
<br />Oct
<br />7.0
<br />2.95
<br />1.01
<br />0.71
<br />2.24
<br />2.80
<br />57,275
<br />2,291
<br />73,429
<br />1.69
<br />31
<br />77,500
<br />0.24
<br />4.73
<br />-6.49
<br />ap -oc
<br />81.00
<br />34.12
<br />10.98
<br />7.69
<br />26.43
<br />33.04
<br />437,900
<br />17,516
<br />561,410
<br />12.89
<br />214.00
<br />535,000
<br />1.64
<br />47.57
<br />-41.41
<br />Total
<br />100.00
<br />42.12
<br />14.27
<br />9.99
<br />32.13
<br />37.84
<br />580,000
<br />23,200
<br />743,590
<br />17.07
<br />365.25
<br />913,125
<br />2.80
<br />57.71
<br />-57.70
<br />NOTES:
<br />WESTERN SUGAR PIT
<br />M -10 -49
<br />Projected exposed (acres) =
<br />Grandfathered (acres) _
<br />Delta (acres) =
<br />Grass (acres) =
<br />Evap. rate (in) =
<br />Effect. Precip. ( %) _
<br />15
<br />0
<br />15
<br />0
<br />42.12
<br />70%
<br />Mining Net Depletions
<br />TABLE I
<br />(2) Based on state's guidelines
<br />(3) Evaporation Rate x (2)/100
<br />(4) Average for Greeley climatological station at UNC (53553)
<br />(5) (4) x 0.7
<br />(6) (3) - (5)
<br />(7) (6) x Potentially exposed ground water / 12
<br />(8) Projected monthly
<br />(9) (8) x 0.04 based on state's guidelines
<br />(10) (9) (tons) * 2000 (lb/ton) / 62.4 (Ib /ft3)
<br />(11) (10) / 43560 (ft3 /af)
<br />(12) Number of days in month
<br />(13) 2500 (gal) x (12)
<br />(14) (13) / 325851 (gal /af)
<br />(15) (7) + (11) + (14)
<br />(16) AWAS using T = 100,000, S = 0.28, W = 2,600, X = 1,350
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