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s ~-~
<br />Table 4.9-4. Total topsoil need in BCY's at year end versus total topsoil stockpile inventory and reserves and
<br />resultant surplus / (deficit). (1)
<br />Overall topsoil situation in BCY's at vear end:
<br />A
<br />N
<br />P
<br />N
<br />Year 1993 1994 1995 1998 1997
<br />Topsoil Stockpilelnventory 4,077,388 3,981,875 4,104,675 4,217,875 4,297,875
<br />Topsoil needed 2,999,993 2,884,634 3,007,247 3,120,180 3,200,847
<br />Surplus / (deficit) 1,077,395 1,097,241 ~' 1,097,628 1,097,695 1,097,028
<br /> l2) (3)'~ (4) (5) (6)
<br />Acres of disturbance 1,837 1,768 1,864 1,934 1,984
<br /> l7) (e) (9) (10) (11)
<br />(1) Based on maximum production as calculated from PR-3. Figures may vary to reflect changes in mining operation.
<br />(2) Based on average replacement depths of ± 2" accuracy. The topsoil replacement yardage may vary + 493,900 bcy's for 1,837 replacement
<br />acres.
<br />(3) Based on average replacement depths of + 2" accuracy. The topsoil replacement yardage may vary ± 480,800 bcy's for 1,788 replacement
<br />acres. -
<br />(4) Based on average replacement depths of + 2" accuracy. The topsoil replacement yardage may vary + 501,200 bcy's for 1,864 replacement
<br />acres.
<br />(5) Based on average replacement depths of + 2" accuracy. The topsoil replacement yardage may vary + 520,000 bcy's for 1,934 replacement
<br />acres.
<br />(6) Based on average replacement depths of +_ 2" accuracy. The topsoil replacement yardage may vary + 533,SOD bcy's }or 1,984 replacement
<br />acres.
<br />(7) Includes 45 acres of cropland at 18" and 1,792 acres of rangeland at 12".
<br />(8) Includes 1,788 acres of rangeland at 12".
<br />(9) Includes 1,864 acres of rangeland at 12".
<br />(10) Includes 1,934 acres of rangeland at 12".
<br />(11) Includes 1,984 acres of rangeland at 12".
<br />
<br />IT49-0)
<br />E~lsb 2/95
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