REP19821

• Permit No: C1982057
• IBM Index Class Name: Report
• Doc Date: 12/11/1995
• Doc Name: SENECA II W 1994 ANNUAL RECLAMATION REPORT RESPONSE TO DIVISION OF MINERALS & GEOLOGY 4/19/95 ADEQUA
• Permit Index Doc Type: ANNUAL RECLAMATION REPORT
• Media Type: D
• Archive: No

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SENECA II-W 1994 ANNUAL RECLAMATION REPORT
RESPONSE TO DIVISION OF MINERALS AND GEOLOGY
04/19/95 ADEQUACY LETTER
December 11, 1995
1. The 1994 topsoil balance, as explained on pages 3-6 of the
1994 2-w Annual Reclamation Report, contains errors due to
surveying, rounding and calculating of volumes. The accuracy
of the 1993 and 1994 topsoil volumes has suffered from changes
in software and surveying practices. Durinq June 1995, the
Seneca survey crew remeasured those piles which had topsoil
added to them in 1994. The results are as follows:
a, Stockpile GG has 38.6 acre-ft (AF), II has 81.6 AF, and JJ has
45.9 AF. No topsoil has been added to or removed from these
piles since December 1994. Because different software packages
were utilized to calculate the volumes each year, it appears
that the 1993 volumes were overestimated. The current program
being used to generate these calculations was written by our
surveying equipment manufacturer, Sokkia. By matching their
software with our surveying instrument Seneca feels a higher
degree of accuracy will be achieved from now on.
b. An additional 62 disturbed acres had topsoil salvaged during
1994, which was placed into piles GG, II and JJ, and 3.9
reclaimed acres were covered with live handled topsoil to a
depth of 1.6 feet. From .the response provided in part a, pile
volumes for GG and II were overestimated in 1993. Therefore,
these piles should not show a loss of 6.9 and 7.7 AF,
respectively. Also, stockpile N should have shown a reduction
of only 57.8 AF and not 75.0, refer to response c. The table
below shows the net changes for the piles affected in 1994:
Stockpile Net chancre
N -57.8
GG 0.0*
II 0.0* Topsoil Replaced = 83.2
JJ +27.3 Stockpile Adjusted = -30.5
Total -30.5 Topsoil Removed = 52.7 **
* Assumed 0.0 AF, because we can not calculate the amount
added to these piles.
** On the 62 acres disturbed, approximately 52.7 AF of topsoil
was removed or an average salvage depth of 0.85 feet.
c. Stockpile N was partially redistributed to final graded areas
in 1994. 36.1 acres were covered with this soil at an average
depth of 1.6 feet. Therefore, 90$ of the 40 acres replaced on
Pits A and B in 1994 came from stockpile N, and the remaining
10'k was direct hauled.