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2010-12-08_PERMIT FILE - C1981008A (11)
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2010-12-08_PERMIT FILE - C1981008A (11)
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Last modified
8/24/2016 4:27:43 PM
Creation date
1/21/2011 5:07:10 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981008A
IBM Index Class Name
Permit File
Doc Date
12/8/2010
Doc Name
Topsoil Handling, Stockpiling and Redistribution
Section_Exhibit Name
Section 2.05.4(2)(d) Topsoil Handling, Stockpilong and Redistribution
Media Type
D
Archive
Yes
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calculations to be conservative, it is likely that the deficit of Lift B Topsoil shown above will be erased <br />by some swell <br />The 93% recovery rate is only applied to the topsoil at the point of salvage. This is to incorporate the <br />loss of some topsoil and subsoil (Lift A and Lift B respectively) due to efforts to avoid excess rock <br />fragments and general salvage methods (soil strata undulate, while the stripping is roughly flat). The <br />93% has therefore only been applied to the "Ahead of Pit" volume calculations, and can be seen on <br />Table B of Map 2.05.4 -6. Stockpiled topsoil recovery is treated as 100 %, since soil losses from <br />handling will be negligible. <br />Calculations demonstrating the quantities for the reclamation are shown on Map 2.05.4 -6 and are <br />described below <br />1 • . UL7 .(�l"iTf_nF11F17t <br />Topsoil volumes are calculated from pre -mine sample points. The calculations are shown on Map <br />2.05.4 -6 (Table A). If excess topsoil is salvaged, it will be placed in the appropriate zone based on <br />the topsoil needs of the reclamation plan at that time. This potential excess is not included in any of <br />the topsoil balance calculations in order to be conservative in planning topsoil placement. The <br />remaining area to be stripped in front of the active disturbance is as follows: <br />Lift A Topsoil <br />Lift A: 29.3 acres - 3.19 acres already stripped for Pond 011, = 26.11 acres. <br />Lift A volume available from additional stripping = 26.11 acres x 9 inches avg. thickness = 31,593 <br />cy. The total Lift A available is 31,593 cy (from new stripping) + 146,337 cy from Stockpile #11 = <br />177,930 cy. Lift A Topsoil in front of the June 2010 active pit will be combined with stockpiled Lift A <br />Topsoil and spread over the 54.33 acres of Zone 4 to attain a thickness of 24 inches. <br />Stockpile #14 will also be created from final cut stripping, which will be approximately 35,450 cy, <br />which will be used to reclaim Zone #4. <br />Revised September 2010 (PR 06) 2.05.4(2)(d) -31 <br />
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