2016-02-17_HYDROLOGY - M2006003 (3)

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Table 1 Brighton Pit Evaporative and Operational Losses Percentof Average Net Water Surface Net Water Surface Month Evaporation Gross Evaporation Precipitation Effective Precipitation Net Evaporation Evaporation Tranehas Evaporation Ponds 0.00 Acres 6.50 Acre inches inches inches Inchiss acre-feet acre-feel 0) (2) (3) (4) (5) (6a) (6b) Jan•15 3.0% 1.37 048 0.34 1.03 0.00 0,56 Feb-15 3.5% 1.59 041 0.29 131 0.00 0.71 Mar-15 5.5% 2.50 1.26 088 1,62 0.00 0.88 Apr-15 9.0% 4.10 1.56 1.09 3.00 0.00 163 May-15 120% 5.46 2.56 1.79 3.67 000 199 Jun-15 14.5% 6.60 1.84 129 5.31 0,00 2.88 Jul•15 15.0% 6.83 1,55 1.09 5.74 000 3.11 Aug-15 13.5% 6.14 1.53 107 5.07 000 2.75 Sap-15 10.0% 4.55 1.01 0.71 3.84 0,00 208 Oct-15 7.0% 3.19 0.87 061 2.58 0.00 1.40 Nov-15 4 0% 1.82 0.93 065 1.17 000 0.63 Deo-15 30% 1,37 0.55 0.39 0.98 0.00 0.53 Total 100.0% 45.50 14.55 10.19 35.32 0.00 19.15 Percent of Annual Amount of Aggregate Aggregate Water Lost with Percent of Annual Amount of Concrete Water Used in Concrete Water Used for Total Evaporation R Lagged Pond Use Lagged Well flee Lagged Evaporation 8 Month Production Production Mined Product Concrete Production Production Batching Dust Control Operational Losses (Evep,Mine,Dust) (Concrete) Operational Losses tans acre-feet cubicyards) acre-feel acre-feel acre-feel acre-feet acre-fee! acre-feel (7) (8) (9) (10) (11) (121 (13) (14) (15) (16) (17) Jan.15 5.1% 0 0.00 5.1% 6.843 084 000 1.40 -2.24 -102 -326 Feb-15 4.9% 0 000 49% 6,598 0.81 0.00 1.52 -2 .1.01 -301 Mar•15 12.1% 0 0.00 12.1% 16,211 1.99 0.36 3.23 -1.84 .1 -284 Apr-15 10.5% 0 0.00 105% 14,093 1,73 0.36 372 -179 -1.02 -2.81 May-15 10.5% 0 0.00 105% 14,093 173 0,36 408 -1,85 .104 -2.89 Jun-15 10.0% 0 000 10.0% 13,360 164 036 4.88 -195 -1.03 -2.98 Jul-15 9.3% 0 0.00 93% 12,464 1,53 0.36 500 -2.12 .108 -3.20 Aug-15 10.1% 0 0.00 10.1% 13.441 165 036 4.76 -229 .1.15 -3.44 Sep-15 9.8% 0 0.00 98% 13,034 160 0.36 4.04 -2,36 .1,17 -3.53 Oct-15 7.7% 0 0.00 7 7% 10,264 1.26 0.36 3.02 -2.32 -1.2 -3.52 Nov-15 49% 0 0.00 4.9% 6,598 0.81 0.36 180 -22 .1.17 -3.37 Dw-15 4.9% 0 0.00 49% 6,598 0.81 000 1.34 -201 -1.1 .3.11 Total 100.o% 0 0.00 100.0% 133.599 16.40 3-24 39.79 .24.97 -12.99 .37.96 (1)From SB 120,the evaporation percentages are for gravel pits with elevations below 6.500 feet (2)Equals Percent of Annual Evaporation times 45.5 inches (3)From Colorado State University's Colorado Climate Center web page,http//cccalmos.colostate.edu for Brighton Weather Statior (4)Equals Column(3)x 0 70.70 percent value was taken from SB 120 (5)Equals Column(2)-Column(4).11 the resullant value is less than zero then a zero is substiluled (6a)Equals Column(5y12 x acres tot de-waler trenches (6b)Equals Column(5N12 x acres fa sill ponds. (7)Based on information from Beslway. (8)Equals Column(7)x tons per year.Production based on information from Bastway.This is production from the mining operation on the West Sk (9)Equals Column(8)times 2000 times 4%divided by 62.4 divided by 43,%0 (10)Based on information from Bestway. (11)Equals Column(10)times cubic yards per year.Production based m information it=Bestway (12)Equals Column(11)times 40 gallons divided by 325851.Assume a use of 50 galons per wbnc yard of wrvxete prod.im (13)Equals 6000 gallons per day limas number of operating days(20 days)in the month divided by 325851,during production months(March thru November) (14)Equals column(6a)+Column(6b)-Column(9)+Column(12)-Column(13) (15)From SDF depletion model-distance weighted SDF for dewatenng bench=205 days(trench on west side increased by 40%from 195 days to 270 days; (16)From SDF depletion model.SDF for Batch Planl well=176 days(increased from 68 days based on MODFLOW analysis) (17)Total lagged evaporative and operational losses(from AWAS).Total of Column(15)+Column(16) 10/12015 3:\Hallimin-105\Water Resources\Cmvel Pits Civil Resoumes\BnghtonSWSP-Civil Resources\2016 SWSP-Brghton\BnghimSWSP_16_including litvak FD.xIs