2013-04-10_PERMIT FILE - C2010089

• Permit No: C2010089
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/10/2013
• Doc Name: WRS, LLC Report on Water Augmentation Plan
• Section_Exhibit Name: Appendix 2.05.6‎(3)‎-1b
• Media Type: D
• Archive: No

The movement of the mining area to NHN is estimated to occur in 2013. Because additional
ponds will be built, and some existing ponds will be removed, reclaimed, or given back to the
landowner, the accounting spreadsheet includes a keypunching area that shows if the pond exists
and amount of the actual /revised surface area. The keypunching area also includes the basin
where the mine depletions being taken from.
In the summer of 2011, Pond 15 was built, but is mostly dry. A small water surface area of
0.09 acres was included. NHN Pond 1 will be added in 2013. NHN Ponds 2 and 3 will be built
in the period 2014 to 2018. In 2019 and beyond, many of the constructed ponds will be
reclaimed or given back to the landowner, who will then be responsible for evaporative
depletions. The summary of estimated evaporative depletions shown in Table 12 is as follows:
Month
Calamity Draw
Tuttle Draw
Coal Canyon
San Miguel River
Total Evap in All
Draws
ac -ft
ac -ft
ac -ft
ac -ft
ac -ft
January
0.00
0.00
0.00
0.00
0.00
February
0.00
0.00
0.00
0.00
0.00
March
0.63
1.21
0.36
0.00
2.20
April
1.17
2.09
0.69
0.00
3.95
May
1.65
2.86
0.99
0.00
5.50
June
2.13
3.55
1.30
0.00
6.98
July
2.02
3.54
1.21
0.00
6.76
August
1.75
3.13
1.04
0.00
5.92
September
1.21
2.26
0.71
0.00
4.17
October
0.76
1.52
0.43
0.00
2.71
November
0.39
0.83
0.22
0.00
1.45
December
0.00
0.00
0.00
0.00
0.00
Total
11.70
20.99
6.95
0.00
39.64
Table 12 also shows the drainage location for each pond so replacements can be made to that
drainage in the event of a senior call located on those tributaries.
For the irrigation season from April through October, evaporative depletions can be augmented
either by direct delivery of CU credits or by storage releases. It is noted that there are excess CU
credits for April through October that can be stored in any of the ponds. During the non -
irrigation months of November through March, the ponds would operate in priority, with any
out -of- priority evaporation depletions being replaced through storage releases. Since the average
temperature in December, January and February is less than 32 degrees, the evaporation during
those months is estimated to be zero.
NH Mine Pond 9 is only used during storm events to capture runoff water before it leaves the
mine permit area. Any water stored is only kept for a few days before being released.
Consequently, the evaporation depletions from this dry pond are expected to be zero.
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