2022-11-18_PERMIT FILE - M2022048 ‎(5)‎

• Permit No: M2022048
• IBM Index Class Name: Permit File
• Doc Date: 11/18/2022
• Doc Name: Application
• From: L.G. Everist, Incorporated
• To: DRMS
• Email Name: ECS
• Email Name: MAC
• Email Name: AWA
• Media Type: D
• Archive: No

MINING PLAN AND TIMETABLE EXHIBIT D(CONT)
sions as needed to incorporate the changes .
At any given time, mining and "concurrent reclamation" may
be occurring in one or more phases to accommodate the blending of
materials, the natural progression of mining from one Phase to
the next . This concurrent reclamation allows for reclamation
work being completed in one phase while mining begins in another
phase.
The "direction of mining" arrows on EXHIBIT C-1 -MINING PLAN MAP show
the applicant ' s best guess on how mining will progress through
the mine areas at this time. Natural ground conditions and un-
foreseen circumstances may necessitate changes to the mining di-
rection throughout the life of the mine.
The RECLAMATION COST ESTIMATE-EXHIBIT Lis based on the Operations
Stage A plan to bond for initial setup of the Plants Site and
support facilities . Included is an estimate for the Operations
Stage B where it is based on an estimated disturbance area when
the Phase 1 has been open for a few years . The acreage disturbed
may increase or decrease as mining progresses . If it increases,
a Technical Revision will be filed to adjust the bond amount to
cover the changed cost estimate.
Mining will start on the southwest of Phase 1 and progress
to the east and south until the mining limits are reached. This
will leave an open working face across the Phase as shown on the
MINING PLAN MAP. This face will have a ;,�: l slope and will be worked
to the north, the exterior final slopes will be either con-
structed using the overburden material or mined to allow for a
cut/fill final grading method using the native sand and gravel.
If mining ends prematurely, this working face will be reclaimed
using a cut/fill sloping method instead of backfilling.
On the exterior final slopes, if the cut/fill method is used
the formula would be, (setback distance+(slope factor*Depth)). In Phase
1 as shown on the MINING PLAN MAP the vertical mining setback line
from the slurry wall would be 25 ' + (1 .25*50 ' ) =87 . 50 ' . If the back-
fill method is used, then 12 feet of flat area will be created at
the setback line before sloping begins . The method chosen at the
time of reclamation will be based on the depth of the deposit .
The Deere & Ault slope geotechnical stability report in the Ap-
pendix, page 3 under Analytical Results has an explanation of
where this sloping plan would be used.
The setbacks to be used in each Phase are shown in the table
on the EXHIBIT C-1 -MINING PLAN MAP. The aggregates will be removed and
L.G. EVERIST, INC-WEST FARM RESERVOIRS November 2022
11