<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 />Year 1993 1994 1995 1996 1997
<br />Topsoil Stockpile Inventory 4,077,388 3,966,388 4,089,388 4,202,388 4,282,388
<br />Topsoil needed 2,999,993 2,889,480 3,012,093 3,125,027 3,205,693
<br />Surplus / (deficit) 1,077,395 1,076,908 1,077,295 1,077,361 1,076,695
<br /> (2) (3) (4) (5) (6)
<br />Acres of disturbance 1,837 1,791 1,867 1,937 1,987
<br /> (7) 18) l9) (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 acres.
<br />13) Based on average replacement depths o(± 2" accuracy. The topsoil replacement yardage may vary ± 481,600 bcy's for 1,791 replacement acres.
<br />(4) Based on average replacement depths of ± 2" accuracy. The topsoil replacement yardage may vary ± 502,OD0 bcy's for 1,867 replacement acres.
<br />(5) Based on average replacement depths of ± 2" accuracy. The topsoil replacement yardage may vary ± 520,800 bcy's for 1,937 replacement acres.
<br />(6) Based on average replacement depths of ± 2" accuracy. The topsoil replacement yardage may vary ± 534,300 bcy's for 1,987 replacement acres.
<br />(7) Includes 45 acres of cropland a[ 18" and 1,792 acres of r angeland a[ 12".
<br />(8) Includes 1,791 acres of rangeland at 12".
<br />(9) Includes 1,867 acres of rangeland at 12".
<br />(10) Includes 1,937 acres of rangeland at 12".
<br />(11) Includes 1,987 acres of rangeland a[ 12".
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<br />IT49-0]
<br />FV Ll6 3/94
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