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<br />Table 4.9~. Total topsoil need in BCY's at year end versus total topsoil stockpile irnernory and reserves
<br />and resuRant surplus/(deficit). (1)
<br />Ovorell topsoil situe6on in BCY'B et year end:
<br />I
<br />N
<br />rn
<br />N
<br />D m
<br />"~ <
<br />m
<br />~_
<br />Z
<br />D
<br />m
<br />v
<br />Year 1986 1967 1968 7969 1990 1991 1992
<br />Topsoil stockpile 1,792,575 1,745,525 2,079,725 2,483,925 3,461,000 3,420,400 4,229,600
<br />balance (16)
<br />Topsoil needed 1,976,333 1,917,447 2,009,407 2,218,333 2,518,413 2,364,340 2,606,340
<br />•Surplus!(deficit) (163,756)) (177,9221 70,318 265,592 670,512 1,056,060 1,623,260
<br /> l2) 131 14) 15) l61 171 (6)
<br />Acres of disturbance 1,202 1,172 1,218 1,329 1,470 1,372 1,548
<br /> (9) (1 O) (11) (12) (13) (14) (15)
<br />(1) Based on maximum production as calculated from TR-51. Figures may very to reflect changes in mining operation.
<br />(2) Besad on average replacement depths of + 7 accuracy. Tho topsoil replacement yardage may very + 323,204 bq's for 1202 replacement acres.
<br />( 3) Based on average replacement depths of ± 7 accuracy. The topsoil replecamem yardage may very ± 315,136 bcy'e for 1172 replacement ecros.
<br />( 4) Based on everege replacement depths o1 ± 7 accuracy. The topsoil replacement yardage may vary ±327,507 bcy'e for 1216 raplacemem acres.
<br />( 5) Based on everege replacement depths of ± 7 accuracy. Tha topsoil replacement yardage may very ± 357,852 bcy'e for 1329 replacement ecree.
<br />( 6) Based on everege replacement depths of ± 7 accuracy. The topsoil replecamem yardage may vary ± 395,267 bq'e for 1470 replacement acres.
<br />( 7) Based on average replacement depths of ± 7 accuracy. The topsoil replecamem yardage may very ±368,918 bry'e for 1372 replacement acres.
<br />( 8) Based on everege replacement depths of ± 7 accuracy. The topsoil replacement yardage may vary ± 416,240 boy's for 1548 raplacemem ecree.
<br />( 9) Includes 48 acres o} cropland et 18' end 1,156 acres of rengalend et 12.
<br />(10) Includes 33 Berea of cropland at 18' end 1,139 acres of rengalend et 17.
<br />(11) Includes 55 ecree of cropland et 18' end 1,195 ecree of rengalend et 17.
<br />(12) Includes 92 aorea of cropland at 18' and 1,237 acres of rangeland M 12'.
<br />(13) Includes 182 acres of cropland at 18' end 1,288 acres of rangeland at 12'.
<br />(14) Includes 187 ecros o1 cropland at 18' end 1,185 acres of rangeland at 12'.
<br />(15) Includes 135 aorea of cropland et 18' end 1,413 acres of rengalend et 17.
<br />(16) Aetuel topsoil etockpila balance based on pile vdumea from Seedon 5, 1990 Annual Report
<br />• Topsoil estimetee in undisturbed lend between Enfiold and Derringor Pits, fdlowing 1992 stripping, show a surplus of 222,208 bcy's.
<br />(PERMfT~T49-4]
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