1999-12-19_PERMIT FILE - M1999120

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' TABLE 2 Total Depletion Analysis Ft. Lupton Sand and Gravel Mine Ground Elev. =4870 ft Month Net Area Evap. Product Product Dust Net Net Evap. Exposed Depl. (x1000) Water Supp. Depl. Depl, ' (ft) (acres) (ac•ft) (tons) (ac'ft) (ac'ft) (ac'ft) (gpm) umn .I 6 a b Jan 0.09 5.25 0.47 000 0.00 0.16 0.63 4.73 ' Feb 0.11 5.25 0.58 14.40 0.42 0.17 1.17 8.77 Mar 0.151 5.25 0.79 25.20 0.74 0.22 1.75 13.11 Apr 0.24 5.25 1.26 40.80 1.20 0.36 2.82 21.14 May 0.30 5.25 1.58 40.80 1.20 0.42 3.20 23.94 Jun 0.45 5.25 2.36 40.80 1.20 0.67 4.24 31.71 Jul 0.50 5.25 2.63 40.80 1.20 0.72 4.55 34.05 ' Aug 0.44 5.25 2.31 26.40 0.78 0.64 3.73 27.91 Sept 0.30 5.25 1.58 26.40 0.78 0.48 2.83 21.21 Oct 0.21 5.25 1.10 18.00 0.53 0.31 1.94 14.55 Nov 0.121 5.25 0.63 18.00 0.53 0.19 1.35 10.11 ' Dec 0.09 5.25 0.47 14.40 0.42 0.14 1.04 7.76 Sub-Total 3.001 15.75 300.00 9.03 4.48 29.26 219.00 Jan ]600 7.69 0A9 0.00 0.00 0.16 0.85 6.38 Feb 7.69 0.85 24.00 0.71 0.17 1.72 12.90 ' Mar 7.69 1.15 4Z00 1.24 0.22 2.61 19.56 Apr 7.69 1.85 68.00 2.01 0.36 4.21 31.52 May 7.69 2.31 68.00 2.01 0.42 4.73 35.43 ' Jun 7.69 3.46 68.00 2.01 0.67 6.14 45.93 Jul 7.69 3.85 68.00 2.01 0.72 6.57 49.19 Aug 7.69 3.38 44.00 1.30 0.64 5.32 39.83 ' Sept 7.69 2.31 44.00 1.30 0.48 4.09 30.58 Oct 7.69 1.61 30.00 0.89 0.31 2.81 21.03 Nov 7.69 0.92 20.00 0.59 0.19 1.70 12.75 Dec 7.69 0.69 24.00 0.71 0.14 1.54 11.53 Sub-Total 23.07 500.00 14.75 4.48 42.30 316.63 Total 38.821 800.00 23.78 8.96 71.66 535.62 Column 1 Net evap.from Table 1 converted. 2 Dewatering trench,recharge pond,exposed surface from mining. 3 Evap.Depl.=Net evap.(col.1)'Area exposed(col.2). 4 Proposed product to be mined from piL 5 Product water=Product mined(col.4)•(1000.0)•(.0000295). ' 6 Water to be used for dust suppresion(4.5 ac'ftty). 7 Net depl.=Evap.Depl.(col.3)+Product water(col.5)+Dust supp.(col.6). tBanks and Gesso, LLC. -12/9/1999- Ft. Lupton Sand and Gravel Mine