2011-03-14_HYDROLOGY - M2009048

• Permit No: M2009048
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/14/2011
• Doc Name: Substitue water supply plan response
• From: DWR
• To: Mr. Merrill
• Email Name: THM
• Email Name: SSS
• Email Name: AJW
• Media Type: D
• Archive: No

Grand Junction Pipe & Supply co.
Table 2: Monthly Distribution of Consumptive Losses Associated in Mining Operations
Gunnison River Pits
Pit No. 1
Dust Control Dust Control Moisture Retained in
Month Site Roads Crusher Operations Mined Product Total
1 2 3 4
January 0.00 0.00 0.00 0
00
February 0.00 0.00 0.00 .
0
00
March 0.00 0.00 0.00 .
0
00
April 0.00 0.00 0.00 .
0
00
May 0.00 0.00 0.00 .
0
00
June 0.34 0.00 0.25 .
0
59
July 0.34 0.50 0.25 .
1
09
August 0.34 0.00 0.25 .
0
59
September 0.00 0.00 0.00 .
0
00
October 0.00 0.00 0.00 .
0
00
November 0.00 0.00 0.00 .
0
00
December 0.00 0.00 0.00 .
0.00
Annual Total 1.02 0.50 0.75 2
27
All values in acre f eet .
Pit No. 5

Month Dust Control
Site Roads
1 Dust Control
Crusher Operations
2 Moisture Retained in
Mined Product
3
Total
4
January 0.81 0.00 0.28 1
09
February 0.81 0.00 0.28 .
1
09
March 0.81 0.50 0.28 .
1
59
April 0.81 0.00 0.28 .
1
09
May 0.81 0.00 0.28 .
1
09
June 0.81 0.00 0.28 .
1
09
July 0.00 0.00 .0.0,0 .
0
00
August 0.00 0.00 0.00 .
0
00
September 0.81 0.50 0.28 .
1
59
October 0.81 0.00 0.28 .
1
09
November 0.81 0.00 0.28 .
1
09
December 0.81 0.00 0.28 .
1.09
Annual Total 8.10 1.00 2.80 11
90
All values in acre f eat .
(1) Dust control on site roads:
Pit No. 1: 5,000 gpd for 22 days per month, or 0.34 ac-ft per month (June through August)
Pit No. 5: 12,000 gpd for 22 days per month, or 0.81 ac-ft per month (January through June & September through C
(2) Dust control for crusher operations:
Pit No. 1: 0.5 ac-ft per month for one month per year (typically July)
Pit No. 5: 0.5 ac-ft per month for two months per year (typically March and September)
(3) Retained moisture:
Pit No. 1: 70,000 tons/year, 72 percent of deposit mined below water table, and 2 percent by weight retained moiStl
Pit No. 5: 250,000 tons/year, 76 percent of deposit mined below water table, and 2 percent by weight retained mois
(4) Total equals sum of columns 1, 2, and 3
Western Water & Lana, Inc..