2023-07-12_PERMIT FILE - M2022048 ‎(2)‎

• Permit No: M2022048
• IBM Index Class Name: Permit File
• Doc Date: 7/12/2023
• Doc Name: Adequacy Review #2
• From: Environmental, Inc
• To: DRMS
• Email Name: ECS
• Email Name: MAC
• Media Type: D
• Archive: No

MINING PLAN AND TIMETABLE EXHIBIT D(CONT)
area will include stripped, partially mined, partially reclaimed,
the Plant Site area, materials stockpile area, settling pond fa-
cility and the slurry wall around future reservoir areas . As
mining progresses across the property some parts of the property
will remain undisturbed while other areas will be either
stripped, mined, partially reclaimed or totally reclaimed. The
EXHIBIT C-1 -MINING PLAN MAP provides information of how the Phases will
develop during mining. Initially the 205 acres would include
having stripped and partially mined Phase 1, the 50 acre Plant
Site and installed the slurry wall around Phase 1 and the instal-
lation of the under drain along the southeast section of the
phase . Much of the 205 acres would be within the highwater line
of the reservoirs that would be covered with water and would need
no soiling or revegetation. This amount of disturbance may change
as the mine develops but prior to exceeding the initial 205
acres, a Technical Revision will be filed to increase the bond
and allow for more disturbance and address the design of the un-
der drain.
This map shows the estimated location of the final slopes
around the perimeter of the entire areas to be mined. The esti-
mated reservoir highwater line, bank areas to be armored, the top
of mining slope and slurry wall locations are shown. It also
shows the maximum working face (highwall) for each Phase and the
estimated cut/fill volume per foot to grade the working face
highwall back to 3h to 1v. No more than 1000 feet of total per-
manent bank sloping will be needed (500 ' on each side of
highwall) . The volume to complete the backfilling on the exte-
rior slopes is shown. In Phase 2 this volume will be greater
because any area mined within 300 feet of the river bank will be
backfilled so a 300 foot setback can be maintained when the res-
ervoirs are built . This river bank excavation area will be done
in 500 feet or less section that will not be left open for more
the 12 months before backfilling, sloping and armoring begins in
any given section.
Of the 472 . 40 acres ± in the permit area, approximately
385 . 79 acres ± will be disturbed by mining. Within the disturbed
area 356. 92 acres will be mined. The 28 . 87 acres of unmined area
will be the setback margins between the slurry wall and the top
of slope into the reservoirs . This area will contain roads for
access to the reservoir areas during and after mining. EXHIBIT F-
RECLAMATION PLAN MAP shows how the reservoirs will be developed.
As mining progresses a reservoir area will be sold and a
L.G. EVERIST, INC-WEST FARM RESERVOIRS July 2023
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