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Month <br />Percent of <br />Annual <br />Evaporation <br />( %) <br />(1) <br />Gross <br />Evaporation <br />Rate <br />(feet) <br />(2) <br />Gross <br />Evaporation <br />(acre -feet) <br />(3) <br />Average <br />Precipitation <br />(inches) <br />(4) <br />Effective <br />Precipitation <br />(feet) <br />(5) <br />Net <br />Evaporation <br />Rate <br />(feet) <br />(6) <br />Evaporative <br />Consumptive <br />Use <br />(acre -feet) <br />(7) <br />2013 <br />Lagged <br />Depletion <br />(acre -feet) <br />(8) <br />2014 <br />Lagged <br />Depletions <br />(acre -feet) <br />(9) <br />Nov -12 <br />4.0% <br />0.15 <br />1.35 <br />0.76 <br />0.04 <br />0.11 <br />0.95 <br />2.77 <br />2.27 <br />Dec -12 <br />3.0% <br />0.11 <br />1.01 <br />0.51 <br />0.03 <br />0.08 <br />0.74 <br />2.28 <br />1.81 <br />Jan -13 <br />3.0% <br />0.11 <br />1.01 <br />0.42 <br />0.02 <br />0.09 <br />0.79 <br />1.78 <br />1.51 <br />Feb -13 <br />3.5% <br />0.13 <br />1.18 <br />0.39 <br />0.02 <br />0.11' <br />0.98 <br />1.49 <br />1.36 <br />Mar -13 <br />5.5% <br />0.21 <br />1.86 <br />1.11 <br />0.06 <br />0.14 <br />1.27 <br />1.38 <br />1.33 <br />Apr -13 <br />9.0% <br />0.34 <br />3.04 <br />1.76 <br />0.10 <br />0.23 <br />2.11 <br />1.53 <br />1.51 <br />May -13 <br />12.0% <br />0.45 <br />4.05 <br />2.33 <br />0.14 <br />0.31 <br />2.83 <br />1.87 <br />1.88 <br />Jun -13 <br />14.5% <br />0.54 <br />4.89 <br />1.60 <br />0.09 <br />0.45 <br />4.05 <br />2.43 <br />2.45 <br />Jul -13 <br />15.0% <br />0.56 <br />5.06 <br />1.64 <br />0.10 <br />0.47 <br />4.20 <br />2.97 <br />3.00 <br />Aug -13 <br />13.5% <br />0.51 <br />4.56 <br />1.67 <br />0.10 <br />0.41 <br />3.68 <br />3.21 <br />3.23 <br />Sep -13 <br />10.0% <br />0.38 <br />3.38 <br />0.95 <br />0.06 <br />0.32 <br />2.88 <br />3.12 <br />3.15 <br />Oct -13 <br />7.0% <br />0.26 <br />2.36 <br />0.92 <br />0.05 <br />0.21 <br />1.88 <br />2.79 <br />2.81 <br />otalIM, <br />400' O ' <br />,; ` <br />'i75 ;':' <br />°^ :: <br />' ^ <br />;x;33' :75<�1:;i ' <br />, . ''14:06.'' - <br />' 0.82 <br />2.93 <br />26.3T <br />27:63 <br />°26.30• <br />Table 2- Revised January 10, 2013 <br />Martin Marietta Materials <br />Riverbend West Demands Table <br />Notes: <br />(1) Monthly percentages determined in SB89 -120 for elevations below 6,500 feet <br />(2) NOAA Technical Report NWS 33, Evaporation Atlas for the Contiguous 48 United States notes a total gross evaporation of 45.0 <br />inches /year <br />(3) Gross lake evaporation = (2) x total exposed surface area which is equal to 9 acres <br />(4) Based upon the Western Regional Climate Center Station for Brighton, CO (050950) for the time period 1973 -2012 <br />(5) Effective precipitation = (4) x 0.7/12 <br />(6) Net monthly evaporation = (2) - (5) <br />(7) Evaporative consumptive use = (6) x total exposed surface area which is equal to 9 acres <br />(8) Reflects 2013 lagged depletions due to evaporation, operational uses and past mining activities at the site based on Glover analysis <br />using parameters noted in Table 6. <br />(9) Reflects 2014 lagged depletions due to evaporation, operational uses and past mining activities at the site based on same parameters <br />as (8) <br />B BA <br />watt t Ant U ICNVP- It R0 + ' CIA ff . 1 NC. <br />