2010-06-04_HYDROLOGY - M1985218

• Permit No: M1985218
• IBM Index Class Name: HYDROLOGY
• Doc Date: 6/4/2010
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Applegate Group, Inc.
• Permit Index Doc Type: Hydrology Report
• Email Name: BMK
• Media Type: D
• Archive: No

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Table No. 1
Lafarge West, Inc.
Rich Pit, M-85-218
Substitute Water Supply Plan - Evaporative Losses in 2010
Applegate
Groupofr1Q.

Month Percent of
Annual
Evaporation
A Gross Lake
Evaporation
(ft)
B
Precipitation
(in)
C Effective
Precipitation
(ft)
D Net Lake
Evaporation
(acre-ft/acre)
E Total Lake
Evaporation
(ac-ft)
F Lagged
Depletions
(ac-ft)
G
Apr 9.0% 0.38 1.23 0.07 0.30 4.92 4.06
May 12.0% 0.50 1.48 0.09 0.41 6.70 5.51
June 14.5% 0.60 1.37 0.08 0.52 8.49 7.00
July 15.0% 0.63 1.92 0.11 0.51 8.31 7.43
Aug 13.5% 0.56 2.09 0.12 0.44 7.14 6.91
Sept 10.0% 0.42 0.84 0.05 0.37 5.96 6.08
Oct 7.0% 0.29 0.74 0.04 0.25 4.03 4.75
Nov 4.0% 0.17 0.52 0.03 0.14 2.21 3.28
Dec 3.0% 0.13 0.34 0.02 0.10 1.70 2.48
Jan 3.0% 0.13 0.32 0.02 0.11 1.72 2.23
Feb 3.5% 0.15 0.30 0.02 0.13 2.08 2.32
Mar 5.5% 0.23 0.85 0.05 0.18 2.91 2.79
Total 100% 4.17 12.00 0.70 3.47 56.16 54.83
Total Exposed Water Surface = 16.2 acres - (16.2 acres exposed pit area)
Annual Precipitation = 12.00 inches -Estimated using CDSS website
Gross Annual Evaporation = 50 inches - Estimated using NOAA Technical Report NWS 33
(A) Percent of annual evaporation from SEO guidelines for elevations < 6,500 feet
(B) Gross lake evaporation, (B) _ (A) * [gross annual evaporation/12]
(C) Annual total from CDSS, monthly distribution estimated using precipitation data from Colorado Climate Center website for Pueblo, CO Weather Station
(D) Effective precipitation, (D) _ [(C)/12] * 70%
(E) Net lake evaporation, (E) _ (B) - (D)
(F) Total lake evaporation, (F) _ (E) * exposed surface area
(G) Lagged evaporative depletions from Appendix A
NA 0106 Lafarge SWSPs1SWSPSWkansas%Suppy Demand-Rich PI . WY 2009 12.15.09.3du
211=10