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EXHIBIT C <br /> ACCOUNTING FORMA <br /> CASE NO. 00CW142 <br /> Future Evaporation Depletion Analysis <br /> Loveland Ready-Mix Concrete,Inc.-#M-74-069 Larimer Pits <br /> YEAR 2009 <br /> Exposed Area Gross Total Historic Credit for Natural Depletions under Pits 13, 14, 15, 18 Net Lagged Net <br /> Requiring Evaporation Volume of Gross Precipitation &20 Potential CU Evaporation Evaporation <br /> Evaporation <br /> Month Augmentation Rate Rate Phreatophyte Natural Veg. Irrigated Total Volume Depletions <br /> (acres) (ft) (ac-ft) (ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft) (ac-ft) <br /> [11 [21 13] [41 151 [61 [71 [8] [91 110] <br /> January 52.29 0.09 4.94 0.04 0.00 0.25 1.07 1.32 3.62 3.77 <br /> February 52.29 0.11 5.76 0.04 0.00 0.26 1.15 1.41 4.35 4.26 <br /> March 52.29 0.17 9.06 0.11 0.07 0.71 3.07 3.86 5.20 5.01 <br /> April 52.29 0.28 14.82 0.15 0.50 1.03 4.46 5.99 8.83 8.06 <br /> May 52.29 0.38 19.77 0.25 0.88 1.65 7,17 9.71 10.06 9.59 <br /> June 52.29 0.46 23.88 0,17 1.26 1.17 5.05 7.47 16.41 15.01 <br /> July 52.29 0.47 24.71 0.14 1.60 0.95 4.12 6.67 18.03 17.29 <br /> August 52.29 0.43 22.24 0.14 1.40 0.94 4.07 6.41 15.83 16.02 <br /> September 52.29 0.32 16.47 0.12 0.89 0.82 3.56 5.27 11.20 12.15 <br /> October 52.29 0.22 11.53 0.09 0.52 0.61 2.66 3.79 7.74 8.70 <br /> November 52.29 0.13 6.59 0.06 0.08 0.40 1.73 2.22 4,37 5.34 <br /> December 52.29 0.09 4.94 0.04 0.00 0.25 1.10 1.35 3.59 4.05 <br /> Total 3.15 164.71 1.34 7.20 9.05 39.21 55.47 109.24 109.24 <br /> Notes: <br /> - R .,- <br /> [I]Exposed area requiring augmentation allows for augmentation of up to a total of 52.29 acres at Larimer Pits,and does not include pits in which mining 44**0 prior to <br /> December 31, 1980 or pits augmented by Case No.W 7412. <br /> [2]Based on NOAA Evaporation Atlas and distributed according to SEO Senate Bill 120 criteria. ,, F - <br /> [3] [1]x[2]. =' <br /> [4]Based on Climate data from Waterdale Station(ID#8839)for 1948-2006. c <br /> [5]Based on potential consumptive use of medium dense cottonwoods. Assuming 2.98 acres of Phreatophytes under Pits 13, 14, 15, 18 and 20. Calciftitted„ <br /> [6]Assumed 90% effective precipitation on natural non-irrigated vegetation area([4]x acres x 90%). Assuming 7.51 acres natural non-irrigated vegetation 3 <br /> [7]Assumed 70%effective precipitation on irrigated area. ([4] x#acres x 70%). Assuming 41.81 acres of irrigation under pits 13, 14, 15, 18 and 20 and ate addit pal exposed <br /> surface area at the Larimer Pits. x <br /> [8] [5]+[6]+[7]. <br /> [9][3]-[8]. ' T <br /> [10]Based on SEO Glover Analysis;T=50000 gpd/ft,S=0.20,Weighted average D=200 ft for net evaporation resulting from pits requiring augmentation. _`. <br />