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Table 1 <br />Martin Marietta Materials <br />Iverson Pit <br />2012 -2013 Projected Depletion <br />.rrssrar M <br />Notes: <br />(1) The exposed area associated with the dewatering ditch will change as additional areas are exposed for mining. It is assumed that the dewatenng ditch has a maximum width of 5 feet. <br />(2) Total gross evaporation (3 65 feet) is based upon NOAA Technical Report NWS 33 and distributed according to SEO Senate Bill 89 -120 criteria <br />November 4.0% February 3.5% May 12 0% August. 13.5% <br />December 3 0% March 5 5% June 14 5% September. 10.0% <br />January' 3 0% April: 9.0% July 15 0% October. 7 0% <br />(3) Equal to (1) x (2) <br />(4) Based upon the average precipitation at the Greeley UNC, CO (iD #3553) NOAA weather station for the time period 1967 -2010 <br />(5) Assumed 70% effective precipitation. (5) is equal to (4) x 70% <br />(6) Equal to (2) - (5). <br />(7) Equal to (lc) x (6) <br />(8) Evaporative depletions in (7) lagged using the Glover methodology in the IDS AWAS model using the following parameters <br />Transmissivity: 120,000 gallons/day /foot <br />Specific Yield. 0 2 <br />Aquifer Width- 2,497 feet <br />Distance from center of pits to river: 333 feet <br />(9) Projected future aggregate production from mining is based upon information from Martin Marietta Materials (MMM) Monthly production values are estimates and may vary so long as annual consumption is not exceeded <br />(10) Projected future aggregate production from mining is based upon information from Martin Marietta Materials (MMM) Water removed with mined aggregate equals 9.6 gallons/ton (4% of total mmed volume) as defined by Senate Bill 89 -120 <br />Therefore, (10) is equal to the projected aggregate production (in tons), multiplied by 9.6 gallons/ton, divided by 325,851 to convert gallons to acre -feet. <br />(11) Lagging of production use in (10) based upon the factors shown in (8). <br />(12) Equal to (8) + (11) <br />...�- e.t.a <br />Rt RRt, (r„t♦ , <br />la) lb <br />2 <br />3) <br />4 <br />5 <br />6) <br />7 <br />8 <br />9a 9b) <br />v (10) <br />11 <br />12 <br />Maximum Exposed Area in <br />gge <br />2012 acres <br />Gross <br />Net <br />Agggregate Production tons <br />Aggregate <br />Aggregate <br />Total <br />Gross <br />Evaporation <br />Average Total <br />Effective <br />Net <br />Evaporation <br />Lagged <br />Production <br />Production <br />Lagged <br />Dewatering <br />Evaporation <br />Volume <br />Precipitation <br />Precipitation <br />Evaporation <br />Volume <br />Evaporation <br />Crushed <br />Consumption <br />Consumption <br />Depletions <br />Month <br />Settling Pond ; Ditch <br />feet <br />ac -ft <br />feet <br />(feet) <br />feet <br />ac -ft <br />Volume ac -ft <br />of Washed <br />Washed <br />ac -ft <br />ac -ft <br />ac -ft <br />Jun -12 <br />0.07 038 <br />053 <br />0.24 <br />0 16 <br />0.11 <br />0.42 <br />019 <br />0 15 <br />0 <br />0 <br />000 <br />000 <br />0.15 <br />Jul -12 <br />007 038 <br />055 <br />025 <br />0.13 <br />009 <br />046 <br />021 <br />0.19 <br />0 <br />0 <br />000 <br />0.00 <br />0.19 <br />Aug -12 <br />007 038 <br />049 <br />0.22 <br />Oil <br />008 <br />0.41 <br />019 <br />0.18 <br />31,600 <br />8,400 <br />071 <br />056 <br />0.75 <br />Sep -12 <br />0.07 038 <br />037 <br />0 17 <br />009 <br />006 <br />030 <br />0 14 <br />0 15 <br />34,100 <br />7,520 <br />072 <br />0.67 <br />0.82 <br />Oct -12 <br />007 038 <br />026 <br />0 12 <br />009 <br />006 <br />0 19 <br />0.09 <br />010 <br />32,800 <br />8,200 <br />072 <br />0.70 <br />0.80 <br />Nov -12 <br />007 038 <br />0.15 <br />007 <br />006 <br />004 <br />010 <br />005 <br />0.06 <br />29,400 <br />7,350 <br />0.65 <br />066 <br />0.72 <br />Dec -12 <br />007 i 038 <br />0 1 l <br />0.05 <br />0.04 <br />003 <br />0.08 <br />0.04 <br />004 <br />10,000 <br />0 <br />0 15 <br />0.26 <br />0.30 <br />Jan -13 <br />0.07 0.57 <br />Oil <br />0.07 <br />004 <br />003 <br />0.08 <br />005 <br />005 <br />20,000 <br />0 <br />0.29 <br />030 <br />0.35 <br />Feb -13 <br />0 07 057 <br />0.13 <br />0.08 <br />003 <br />0.02 <br />Oil <br />0.07 <br />006 <br />1 44,775 <br />14,925 <br />1 10 <br />0.93 <br />1 1.00 <br />Mar -13 <br />007 0.57 <br />020 <br />0 13 <br />0.09 <br />006 <br />0 14 <br />009 <br />008 <br />67,000 <br />19,100 <br />1.55 <br />1.40 <br />1.48 <br />Apr -13 <br />007 057 <br />033 <br />021 <br />015 <br />Oil <br />022 <br />0 14 <br />0.13 <br />58,000 <br />18,600 <br />1.40 <br />1.37 <br />1.50 <br />May- 13 <br />007 0.57 <br />044 <br />0.28 <br />020 <br />014 <br />030 <br />0.19 <br />0 18 <br />61,600 <br />15,100 <br />l 35 <br />1.35 <br />1._53 <br />Total <br />3 65 <br />1.88 <br />1 20 <br />0 84 <br />2 81 <br />1.43 <br />1 38 <br />389,275 <br />99,195 <br />8.64 <br />L 821 <br />1 9.58 <br />Notes: <br />(1) The exposed area associated with the dewatering ditch will change as additional areas are exposed for mining. It is assumed that the dewatenng ditch has a maximum width of 5 feet. <br />(2) Total gross evaporation (3 65 feet) is based upon NOAA Technical Report NWS 33 and distributed according to SEO Senate Bill 89 -120 criteria <br />November 4.0% February 3.5% May 12 0% August. 13.5% <br />December 3 0% March 5 5% June 14 5% September. 10.0% <br />January' 3 0% April: 9.0% July 15 0% October. 7 0% <br />(3) Equal to (1) x (2) <br />(4) Based upon the average precipitation at the Greeley UNC, CO (iD #3553) NOAA weather station for the time period 1967 -2010 <br />(5) Assumed 70% effective precipitation. (5) is equal to (4) x 70% <br />(6) Equal to (2) - (5). <br />(7) Equal to (lc) x (6) <br />(8) Evaporative depletions in (7) lagged using the Glover methodology in the IDS AWAS model using the following parameters <br />Transmissivity: 120,000 gallons/day /foot <br />Specific Yield. 0 2 <br />Aquifer Width- 2,497 feet <br />Distance from center of pits to river: 333 feet <br />(9) Projected future aggregate production from mining is based upon information from Martin Marietta Materials (MMM) Monthly production values are estimates and may vary so long as annual consumption is not exceeded <br />(10) Projected future aggregate production from mining is based upon information from Martin Marietta Materials (MMM) Water removed with mined aggregate equals 9.6 gallons/ton (4% of total mmed volume) as defined by Senate Bill 89 -120 <br />Therefore, (10) is equal to the projected aggregate production (in tons), multiplied by 9.6 gallons/ton, divided by 325,851 to convert gallons to acre -feet. <br />(11) Lagging of production use in (10) based upon the factors shown in (8). <br />(12) Equal to (8) + (11) <br />...�- e.t.a <br />Rt RRt, (r„t♦ , <br />