2011-02-03_HYDROLOGY - M1978052

• Permit No: M1978052
• IBM Index Class Name: HYDROLOGY
• Doc Date: 2/3/2011
• Doc Name: Combined Replacement Plan
• From: OSE
• To: Applegate Group, Inc.
• Permit Index Doc Type: Hydrology Report
• Email Name: DB2
• Media Type: D
• Archive: No

Table No. 2
Lafarge Westy Inc.
Combined South Platte River Substitute Supply Plan
Combined South Platte River Water Balance & Replacement Requirements
Applegate
Group. m.

Month Total
Lagged
Mining
Depletions
(acre-feet)
A Dewatering
Accretions (+) or
Depletions (-)

(acre-feet)
B
Replacements
from Aurora

(acre-feet)
Transit
Losses

(acre-feet)
D
Water Balance

(acre-feet)
Nov-10 9.07 -0.20 10.11 0.51 0.34
Dec-10 7.33 -0.17 7.99 0.40 0.09
]an-11 7.82 -0.15 8.61 0.43 0.21
Feb-11 7.86 -0.12 8.88 0.44 0.46
Mar-11 8.47 49.97 0.00 0.00 41.50
Apr-11 10.35 36.83 0.00 0.00 26.48
May-11 12.07 -10.72 23.97 1.20 -0.01
Jun-11 13.60 -5.44 20.23 1.01 0.18
]u1-11 14.96 -3.58 19.67 0.98 0.15
Aug-11 15.62 -2.74 19.67 0.98 0.33
Se 11 15.48 -2.20 19.04 0.95 0.41
Oct-11 13.79 -1.93 16.60 0.83 0.05
Total 136.4 59.6 154.8 7.7 70.2
(A) Total mining depletions from the mining sites. See Table No. 1.
(B) Impacts from dewatering at Riverbend East; net accretions to river are positive, net depletions to river are negative
(C) Replacement lease from Aurora; see Appendbc D
(D) Transit losses of 5% from Metro WWTP to sites, (C)*0.05
(E) Water Balance = (C) + (B) - (A) - (D)
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