2011-01-04_HYDROLOGY - M1984108

• Permit No: M1984108
• IBM Index Class Name: HYDROLOGY
• Doc Date: 1/4/2011
• Doc Name: Proof of ownership for the 26.4 shares of Uncompahgre Valley Water users Association water
• From: Western Gravel, Inc.
• To: DRMS
• Permit Index Doc Type: Hydrology Report
• Email Name: GRM
• Media Type: D
• Archive: No

Table 1 13 -April 2011 -March 2012
Evaporation for ##site near Olathe, Colorado (elev. 5350 ft)
Western Gravel Inc.
Groundwater exposed During Mining 3.08 acres for south pit (Aprll-lune) and 1.87 acres for north pit.
Groundwater exposed After Mining 6.4 acres for south pit (July-March) and 1.87 acres for north pit.
Gross Evaporation 48 Inches (from NOAA Technical Report NWS 33)
Precioitation Station Montrose 2

Month

April
bAa
June
Month
1
Evaporation
Detrubutlor?
910
12.0
14.5 2
Gross
Evaporation

inches
4.14
552
887
Avere Year
Precipitation ,

inches
0.73
0.74
0.4b 4
Effective
Precipitation

inches
0.51
0.52
0.32 ti
Not Unit
Evaporation

inches
3.63
5.00
6.35
40
6 a
Net Unit
Evaporation

06 let
0.30
0.42
0.53
53
0 South Pit
So
EvaUni'oration
agged
acre-feet
0.93
1.28
1.63
3.41 North Pit

Evaporation
tagged
acre-feet
0.51
0.89
0.88
0.93 Total

Evaporation

acre-feet
1.44
1.97
2.51
4.34
July 15.0 6.90 0.72 0.50 .
47
5 .
46
0 2.92 0.84 3.76
Au 13.5 6.21 1.06 0.74 .
95
3 .
33
0 2.11 0.88 2.77
September 10.0 4.60 0.92 0.65 .
62
2 .
22
0 1.40 0.48 1.88
October 7.0 3.22 0.85 0.60 .
1
46 .
12
0
0.78
0.31
1.09
71
November 4.0 1.84 0.54 0.38 .
1
02 .
08
0 0.54 0.23 0.77
December 3.0 1.38 0.52 0.38 .
1
05 .
09
0 0.56 0.21 0.77
Janus 3.0 1.38 0.48 0.33 .
1
33 .
11
0 0.71 0.24 0.95
Fe rua 3.5 1.81 0.40 0.28 .
12
2 .
18
0
1.13
0.32 1.45
March
Annua 5.5
100.00 2.53
48.00 0.59
8.00 0.41
6.80 .
40.40 .
3.37
7.40
6.30 3.7
23.70 ;
Footnotes:
(1) From SEO's Guidelines (2/28/95) for sites with elevation less then 6,500 ft.
(2) Annual value from NOAA Technical Report NWS 33.
(3) Average annual precipitation data from NOAA recording stations at Montrose 2 (1982-2006) and Ridgway (1982-2006) averaged.
(4) Equals Column (3) x 0.70
(5) Column (2) - Column (4)
(6) Column (5) / 12
(7) Column (8) x 3.08 acres of exposed groundwater surface April through June (during mining) and Column (6) x 7.9 acres of exposed ground water July through March (after mining
(8) Column (6) x 1.87 acres of exposed groundwater surface lagged back to river
(9) Column (7) + Column (8)
PA08141110001SWSP%Red DohSWSP-ReneweLDecember_20= Wright Water Engineers, Inc, Des by: EKG
Ckd by: PRP
Western Gravel both pits_SWSP Tables 12-10-09 EKGevap mining and non-mining 2011 December 2009