DRC-2011-007451_14 - 0901a0688027e923

Area of Drawings
TRC-1 - TRC-4
CELL 2
CELL 3
CELL 4A
CELL 4B
MILL SITE
RESTRICTED AREA BOUNDARY
CELL 1
RESTRICTED AREA BOUNDARY
DISHCARGE CHANNEL
BLACK MESA RD
HW
Y

1
9
1
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp1009740 OVERALL PLAN VIEW OF RECLAMATION FEATURES REC-1 A2 OF 12
LEGEND:
R ES TR I C T E D A REA BOUNDARY
RESTRICTED AREA BOUNDARY
ORE PAD
MILL YARD
CELL 1
(EVAPORATION)
SI
T
E

B
O
U
N
D
A
R
Y
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp1009740D004 MILL SITE AND ORE PAD FINAL GRADING PLAN REC-2 A3 OF 12
LEGEND:
NOTE:
RESTRICTED AREA BOUNDARY
CELL 1 (EVAPORATION)
AREA OF CONTAMINATED MATERIALS DISPOSAL
0.9%
27.44 ACRES MILL
YARD
CELL 2
AREA OF CELL TO
BE BREACHED
ROCK APRON
DISCHARGE CHANNEL
DAKOTA
SANDSTONE
4.51 ACRES3:1 (TYP)
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp1009740D005 SEDIMENTATION BASIN DETAIL REC-3 A4 OF 12
LEGEND:
NOTE:
CELL 3
CELL 4B
CELL 4A
CELL 2
CELL 1
CELL 4B BASE GRADING
PLAN GROUND SURFACE
CONTOUR (TYP)
APPROXIMATE LIMIT OF
ADDITIONAL INTERIM FILL
INTERIM FILL GRADING PLAN
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp
LEGEND:
5A
5B
7C
TRC-11009740D003 A5 OF 12
6A
7A
6B
7B
CELL 3
CELL 4B
CELL 4A
CELL 2
CELL 1
APPROXIMATE LIMIT OF COMPACTED COVER
APPROXIMATE LIMIT OF COMPACTED COVER
APPROXIMATE LIMIT OF COMPACTED COVER
CELL 4B BASE GRADING
PLAN GROUND SURFACE
CONTOUR (TYP)
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp1009740D002
LEGEND:
COMPACTED COVER GRADING PLAN TRC-2 A6 OF 12
5A
5B
7C
6A
7A
6B
7B
CELL 3
CELL 4B
CELL 4A
CELL 2
0.5%
0.5%
0.5%
0 .5 %
1 .0 %
1.
0
%
CELL 1
CELL 4B BASE GRADING
PLAN GROUND SURFACE
CONTOUR (TYP)
APPROXIMATE LIMIT OF
FINAL COVER SURFACE
0.82%
0.82%
1009740D001
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp FINAL COVER SURFACE LAYOUT TRC-3 A7 OF 12
LEGEND:5A
5B
7C
6A
7A
6B
7B
CELL 3
CELL 4A
CELL 2
0.5%
0.5%
0.5%
0 .5 %
1.0 %
1.
0
%
CELL 1
EXISTING SURFACE FROM
2007 LIDAR SURVEY (TYP)
0.82%
0.82%
ROCK APRON A: D = 7.4 INCHES
MINIMUM WIDTH = 10 FT
MINIMUM DEPTH = 2 FT
ROCK APRON B: D = 15 INCHES
MINIMUM WIDTH = 19 FT
MINIMUM DEPTH = 3.75 FT
50
50
0.5% SLOPES: TOPSOIL
AND VEGETATION
0.8-1.0% SLOPES: TOPSOIL MIXED
WITH 25% 1-INCH MINUS GRAVEL
0.8-1.0% SLOPES: TOPSOIL
MIXED WITH 25% D = 1"
0.5% SLOPES: TOPSOIL
AND VEGETATION
FLOW PATH ALONG LONGEST
5H:1V SIDE SLOPE IN CELL 4A
LONGEST FLOW PATH
ACROSS CELLS 2, 3 AND 4A
5H:1V SLOPES: D = 7.4
INCHES WITH FILTER
LAYER BETWEEN EROSION
PROTECTION AND SOIL
50
MILL SITE0.1%
SLOPES: TOPSOIL
AND VEGETATION
DISCHARGE CHANNEL BEDROCK
50
CELL 4B
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp1009740 EROS RECLAMATION COVER EROSION PROTECTION TRC-4 A8 OF 12
LEGEND:
EL
E
V
A
T
I
O
N
,

F
T
EL
E
V
A
T
I
O
N
,

F
T
9'
CELL 4B
TAILINGS ELEVATION AT 5598.5'
0.82%
BOTTOM OF CELL FROM DESIGN DRAWINGS
FINAL COVER SURFACE
5
1
2.5' COMPACTED COVER
2.5' INTERIM FILL
3.5' GROWTH MEDIUM0.5' EROSION PROTECTION
MAXIMUM TAILINGS SURFACE
EL
E
V
A
T
I
O
N
,

F
T
EL
E
V
A
T
I
O
N
,

F
T
9'
CELL 4A
TAILINGS ELEVATION AT 5598.5'
FINAL COVER SURFACE
EXISTING SURFACE FROM 2007 LIDAR SURVEY
5
1
2.5' COMPACTED COVER
2.5' INTERIM FILL
3.5' GROWTH MEDIUM
0.5' EROSION PROTECTION
MAXIMUM TAILINGS SURFACE
0.82%
8
3
8
5
8
6
A TAILINGS COVER
3
B TAILINGS COVER
3 (LOOKING WEST)
(LOOKING WEST)
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp
LEGEND:
1009740D001 COVER OVER CELL 4A & 4B CROSS SECTIONS TRC-5 A9 OF 12
EL
E
V
A
T
I
O
N
,

F
T
EL
E
V
A
T
I
O
N
,

F
T
9' MIN
CELL 3
0.5%
MAXIMUM TALINGS ELEVATION 5608.5'
FINAL COVER SURFACE
EXISTING SURFACE FROM 2007 LIDAR SURVEY
3.5' GROWTH MEDIUM
TOP OF COMPACTED COVER TOP OF INTERIM FILL0.5' EROSION PROTECTION 1H:5V SLOPE
EL
E
V
A
T
I
O
N
,

F
T
EL
E
V
A
T
I
O
N
,

F
T
EL
E
V
A
T
I
O
N
,

F
T
0.5%9' MIN
CELL 3
MAXIMUM TALINGS ELEVATION 5608.5'
13'
FINAL COVER SURFACE
EXISTING SURFACE FROM 2007 LIDAR SURVEY
5
1
TOP OF COMPACTED COVER
TOP OF INTERIM FILL
3.5' GROWTH MEDIUM
0.5' EROSION PROTECTION
APPROXIMATE DIKE LOCATION
8
6
8
7
A TAILINGS COVER
3 (LOOKING WEST)
B TAILINGS COVER
3 (LOOKING WEST)
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp
LEGEND:
1009740D001 COVER OVER CELL 3 CROSS SECTIONS TRC-6 A10 OF 12
EL
E
V
A
T
I
O
N
,

F
T
EL
E
V
A
T
I
O
N
,

F
T
EXISTING SURFACE FROM
2007 LIDAR SURVEY
0.5%0.5%
CELL 2
FINAL COVER SURFACE
9' MIN
5
1
1.0%
CELL 1
MILL DEBRIS /
CONTAMINATED SOILS
9' COVER
3.5' GROWTH MEDIUM
TOP OF COMPACTED COVER TOP OF INTERIM FILL TOP OF COMPACTED
COVER0.5' EROSION PROTECTION
TAILINGS FROM 1980 AS-BUILT DRAWING
(ENERGY FUELS NUCLEAR, INC)
8
4
EL
E
V
A
T
I
O
N
,

F
T
EL
E
V
A
T
I
O
N
,

F
T
1.0%
0.5%0.5%
CELL 2
9' MIN 5
1
5
1
1.0%
CELL 1
9' COVER
TOP OF COMPACTED COVER
EXISTING SURFACE FROM
2007 LIDAR SURVEY
3.5' GROWTH MEDIUM
TOP OF INTERIM FILL
FINAL COVER SURFACE
0.5' EROSION PROTECTION
MILL DEBRIS /
CONTAMINATED SOILSTAILINGS FROM 1980 AS-BUILT DRAWING
(ENERGY FUELS NUCLEAR, INC)
APPROXIMATE DIKE LOCATION
8
7
EL
E
V
A
T
I
O
N
,

F
T
EL
E
V
A
T
I
O
N
,

F
T
TAILINGS FROM 1980 AS-BUILT DRAWING
(ENERGY FUELS NUCLEAR, INC)
COVER
CELL 2
TOP OF INTERIM FILL 3.5' GROWTH MEDIUMEXISTING SURFACE FROM 2007 LIDAR SURVEY
TOP OF COMPACTED COVER0.5' EROSION PROTECTION
APPROXIMATE DIKE LOCATION
FINAL COVER SURFACE
B TAILINGS COVER
3 (LOOKING WEST)
A TAILINGS COVER
3 (LOOKING WEST)
C TAILINGS COVER
3 (LOOKING WEST)
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp
LEGEND:
1009740D001 COVER OVER CELL 2 CROSS SECTIONS TRC-7 A11 OF 12
1% SLOPE
1
5
PLAN
5:1 (TYP)
RIPRAP D = 7.4" (MIN)
W
W
W2
D (SEE TABLE)
ROCK APRON (SEE TABLE)
RIPRAP D = 7.4" (MIN)
RIPRAP FILTER LAYER
6"
12" MIN
ELEVATION
50
CELL OUTSLOPE
ROCK APRON (SEE TABLE)
ROCK APRON SCHEDULE
ROCK APRON RIPRAP D
MINIMUM
W W2 DEPTH (D)
A 7.4" 10' 8'2'
B 15" 19' 17' 3.75'
50
50
9'
0.5'
3.5'
2.5'
2.5' MIN
VEGETATION
EROSION PROTECTION LAYER
(TOPSOIL-GRAVEL ADMIXTURE)
WATER STORAGE / BIOINTRUSION / FROST
PROTECTION / RADON ATTENUATION LAYER
(LOAM TO SANDY CLAY)
RADON ATTENUATION AND GRADING LAYER
(LOAM TO SANDY CLAY)
RADON ATTENUATION LAYER
(HIGHLY COMPACTED LOAM TO SANDY CLAY)
TAILINGS
1
5
1
3
0.5'
BERM
RANDOM FILL
RIPRAP
VARIES
CELL 2 CELL 1
1.0%0.5%
5
1
5
1
3
1 MILL DEBRIS /
CONTAMINATED
SOILS
RANDOM FILL
CLAY LINER
BERM
8
1
8
2
BERM
TAILINGS TAILINGS
CELL 3
0.82%
CELL 4
MAXIMUM TAILINGS ELEV AT 5598.5'
BERM
TAILINGS
TAILINGS
5
1
CELL 2CELL 3
5
1
BERM TAILINGS
CELL 4
MAXIMUM TAILINGS
ELEV AT 5598.5'
0.82%
5
1
BLANDING, UTAH
WHITE MESA MILL TAILINGS RECLAMATION
Denison Mines (USA) Corp1009740 DET RECLAMATION COVER DETAILS TRC-8 A12 OF 12
1 ROCK APRON AT BASE OF TOE CELL OUTSLOPES
8
2 COVER DETAIL FOR POND SURFACE AREAS
8
3 COVER DETAIL FOR SIDE SLOPES
5
4 COVER DETAIL FOR CELL 1 CONTAMINATED MATERIALS
8
5 COVER DETAIL OVER BERM - SOUTHERN EDGE CELL 4
8
6 COVER DETAIL OVER BERM - BETWEEN CELL 4 AND CELL 3
8
7 COVER DETAIL OVER BERM - BETWEEN CELL 3 AND CELL 2
8