2011-06-08_HYDROLOGY - M1997054

• Permit No: M1997054
• IBM Index Class Name: HYDROLOGY
• Doc Date: 6/8/2011
• Doc Name: SWSP
• From: OSE
• To: Applegate Group, Inc.
• Permit Index Doc Type: Hydrology Report
• Email Name: BMK
• Media Type: D
• Archive: No

Table-1
Front Range Aggregates, LLC
Parkdale Project M-97-054
Substitute Supply Plan - Evaporative Losses
111 01
Applegate
Groupo.

Month Percent of
Annual
Evaporation Gross Lake
Evaporation
(ft)
Preciptation
(in) Effective
Preciptation
(ft) Net Lake
Evaporation
(acre-ft/acre) Total Evaporative
Consumptive Use
(ac-ft)
Oct-09 7.0% 0.27 0.84 0.05 0.22 0.26
Nov-09 4.0% 0.15 0.66 0.04 0.11 0.09
Dec-09 3.0% 0.12 0.45 0.03 0.09 0.07
Jan-10 3.0% 0.12 0.46 0.03 0.09 0.07
Feb-10 3.5% 0.13 0.43 0.03 0.11 0.09
Mar-10 5.5% 0.21 0.96 0.06 0.15 0.19
Apr-10 9.0% 0.35 1.45 0.08 0.26 0.31
May-10 12.0% 0.46 1.59 0.09 0.37 0.59
Jun-10 14.5% 0.56 1.21 0.07 0.49 0.78
Jul-10 15.0% 0.58 1.87 0.11 0.47 0.75
Aug-10 13.5% 0.52 1.94 0.11 0.40 0.65
Sep-10 10.0% 0.38 1.01 .0.06 0.32 0.38
Oct-10 7.0% 0.27 0.84 .0.05 0.22 0.26
Nov-10 4.0% 0.15 0.66 0.04 0.11 0.09
Dec-10 3.0% 0.12 0.45 0.03 0.09 0.07
Total 114% 4.37 14.82 0.87 3.50 4.64
Exposed Water Surface = 1.6 acres -3 settling ponds, a gravel washing pond, and dewatering trenche
Annual Precipitation = 12.9 inches -Taken from Western Regional Climate Center
Gross Annual Evaporation = 46 inches -Taken from NOAA Technical Report NWS 33
Notes
(1) Taken from State Engineer's Guidelines for Gravel Pits at elevations below 6500 feet.
(2) Taken from NOAA Technical Report NWS 33 Map 3 and distributed monthly according to Percent of Annual Evaporation (1)., Oct09-Sep-10 based on actual values
(3) From Western Regional Climate Center Canon City station #51294 (1948-2007).
(4) Effective Precipitation equals 70% of Average Annual Precipitation, 70%' (3).
(5) Gross Evaporation minus Effective Precipitation converted to units of feet, (2) - (4).
(6) Total Evaporative Loss is the product of Net Evaporation (5) and Exposed Water Surface and %of month Not Frozen
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