GENERAL48878

• Permit No: C1981014
• IBM Index Class Name: General Documents
• Doc Date: 6/24/1994
• Doc Name: PROPOSED DECISION & FINDINGS OF COMPLIANCE FOR RN2
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

Cumulative Hydrologic Impact Statement
A Cumulative Hydrologic Impact Statement (CHIS) was completed for
the Southfield Mine and considers the hydrologic impacts of all
anticipated mining and reclamation activities in the area of the
mine during the current permit term. This CHIS is available under
separate cover in the files of the Division.
Pursuant to Rule 2.07.6(2)(c) and in consideration of the absence
of demonstrated significant hydrologic impacts by anticipated
mining and reclamation operations in the study area, either
individually or cumulatively, the Division finds the proposed
Southfield Mine operation to have been designed to prevent material
damage to the hydrologic balance outside the proposed permit area.
IV. Topsoil
Topsoil resource information is contained in Section 2.04.9 of
the permit application. Topsoil handling information is in
Sections 4.06 "Topsoil", 2.05.3 "Operations Plan" and 2.05.4
"Reclamation Plan". Location of the three topsoil piles on
the mine site can be seen on Map No.14, "Mine Soils Map".
There are three topsoil piles at the mine site which consist
of topsoil salvaged during initial construction of the refuse
area. There was no topsoil salvaged for the facility area
since it had been disturbed from previous pre-law mining
operations. The only remaining topsoil to be salvaged is in
the refuse pile expansion area to the south and west. Refuse
expansion is estimated at about 10.7 acres.
Topsoil stripping depths in the refuse pile expansion area
will remain as previously approved, at 4 feet. The operator
is currently committed to salvaging approximately one foot of
"A" horizon and three feet of "B" horizon material from this
area. Soil analysis indicates little difference between the
two soil horizons, as plant growth media. Therefore, the
Division finds that there is. no need to store the A and B
horizon materials separately. The operator is only required
to handle these materials separately when "live handled".
Live handled topsoil is reapplied immediately after stripping.
During permit review and subsequent bond estimation, the
Division discovered a discrepancy in th'e bond estimate made
for backfilling and grading the refuse pile and facility area
with overburden and topsoil. To address this issue formally
as a permit defect, the Division has added the following items
No.i and 3 to a new stipulation:
Stipulation No.24
AS A COMPONENT OF THE 1994 PERMIT RENEWAL AND BOND ESTIMATE
REVIEW, THE DIVISION HAS DETERMINED THAT THE CURRENT EFCI
RECLAMATION PLAN IS DEFICIENT IN THE FOLLOWING AREAS:
3 8'