2010-03-05_HYDROLOGY - M1996050

• Permit No: M1996050
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/5/2010
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Mr. Forest Leaf, P.E.
• Permit Index Doc Type: Hydrology Report
• Email Name: ECS
• Media Type: D
• Archive: No

Table 2
Logan Sand and Gravel Mine
Operational Losses
Total
Percent of Evaporative
Annual Amount of Water Lost Volume of and
Aggregate Aggregate with Mined Water in First Water Used for Total Operational Operational
Month Production Production Aggregate Fill Dust Control Losses from Pits Losses
(tons) (acre-feet) (acre-feet) (acre-feet) (acre-feet) (acre-feet)
[7] [8] [9] [10] [11] [12] [13]
Jan-09 0.0% 0 0.00 0.00 0.00 0.00 0.40
Feb-09 0.0% 0 0.00 0.00 0.00 0.00 0.48
Mar-09 5.5% 825 0.02 0.18 0.09 0.30 0.95
Apr-09 9.0% 1,350 0.04 0.30 0.09 0.43 1.55
May-09 13.0% 1,950 0.06 0.43 0.09 0.58 1.88
Jun-09 16.5% 2,475 0.07 0.54 0.09 0.71 2.37
Jul-09 18.0% 0 0.00 0.00 0.09 0.09 1.95
Aug-09 15.0% 0 0.00 0.00 0.09 0.09 1.79
Sep-09 11.0% 0 0.00 0.00 0.09 0.09 1.40
Oct-09 8.0% 0 0.00 0.00 0.09 0.09 0.97
Nov-09 4.0% 0 0.00 0.00 0.09 0.09 0.60
Dec-09 0.0% 0 0.00 0.00 0.00 0.00 0.41
Total 100.0% 6,600 0.19 1.45 0.83 2.47 14.75
Total
Percent of Evaporative
Annual Amount of Water Lost Volume of and
Aggregate Aggregate with Mined Water in First Water Used for Total Operational Operational
Month Production Production Aggregate Fill Dust Control Losses from Pits Losses
(tons) (acre-feet) (acre-feet) (acre-feet) (acre-feet) (acre-feet)
Jan-10 0.0% 0 0.00 0.00 0.00 0.00 0.40
Feb-10 0.0% 0 0.00 0.00 0.00 0.00 0.48
Mar-10 5.5% 908 0.03 0.20 0.09 0.32 0.97
Apr-10 9.0% 1,485 0.04 0.33 0.09 0.46 1.59
May-10 13.0% 2,145 0.06 0.47 0.09 0.63 1.93
Jun-10 16.5% 2,723 0.08 0.60 0.09 0.77 2.43
Jul-10 18.0% 2,970 0.09 0.65 0.09 0.83 2.69
Aug-10 15.0% 2,475 0.07 0.54 0.09 0.71 2.40
Sep-10 11.0% 1,815 0.05 0.40 0.09 0.54 1.86
Oct-10 8.0% 1,320 0.04 0.29 0.09 0.42 1.30
Nov-10 4.0% 660 0.02 0.14 0.09 0.26 0.76
Dec-10 0.0% 0 0.00 0.00 0.00 0.00 0.41
Total 100.0% 16,500 0.49 3.62 0.83 4.93 17.21
Notes:
[7] Based on information from Reese
[8] Equals Column [7] x # tons/yr.
[9] Equals Column [8] x 2000 x 0.04/62.4/43,560.
[10] Vfif= Vmm x (1- porisity) - Vlp, where porosity = 0.35 & density of material = 120#s/cf
[11] Equals 1500 gal/day x number of operating days (20 days)/325851, during production months
[12] Equals Column [9] + Column[10] + Column[l 1]. Dust control water is pumped from open pit.
[13] Total Evaporative and Operational depleitons. Column[6], Table 1 + Column [12]
Reese
12/8/2009 Logan Sand Gravel 09-10 SWSP Reese 09 SWSP v2 09 12 004.xls