PERMFILE129450

• Permit No: C1984062
• IBM Index Class Name: Permit File
• Doc Date: 10/15/1980
• Doc Name: SEDIMENTATION PONDS HYDROLOGY AND HYDRAULICS ENERGY MINE 3
• Section_Exhibit Name: EXHIBIT 3 PLATE 2
• Media Type: M
• Archive: No

EMERGENCY SPILLWAY RATING CURVES
800
7 5'
700
I
60'
600 Weir lengths
50'
500
in N
40
it 400
a
V
J)
30'
300
200
15'
100 10'
0
0 .5 1.0 1.5 2 0 2.5
DEFTH JF FLOW ABOVE INVERT OR CREST (ft )
PRIMARY SPILLWAY RATING CURVE
POND A
60 /
/----Weir + small holes
50 `
z0 /
F /
W /
3C /e Orifices small holes
o
20
i
i
i
i
i
/ Pipe flow control
JO-
0
0 .5 I. 1.5 2. 2.5 3.
HEAD ABOVE TOP OF RISER (ft.) -+
60-
H
50
W
U
a
x
V
V) 40
0
30
rw
E0
0
0 2 4 6 8 10 12 14 16 18 20
TIME ( hrs . )
HYDROLOGY SUMMARY
POND 1. D.
A
RISER
PIPE RATING CURVES
E
F
3
H 3
1
TRIBUTARY AREA (AC)
201
36
75
HOLE
IISIZES
w
135
29
AMC II CN
77
8¢
75
9B
72
68
W
76
10 YEAR VOLUME (AF)
5.7
A 8
�
tr
2
O. 6
2.6
3.9
Q
10 YEAR
x
U
51
33
21
12
6
/9
4�
15
25 YEAR VOLUME (AF)
o
2.4
2.6
0.7
p1P�
4.5
5.8
9�
DISCHARGE (CFS)
7S
45
31
/5
/0
3¢
61
22
100 YEAR
13.¢
6
¢.Z
/-0
/. 7
8.4
91 /
/•8
VOLUME (AF)
4'
D
100 YEAR
/Zo
65
52
22
16
63
103
35
j
DI A
10 YEAR PEAK
"
DI
OUTFLOW (CFS)
1-3
O•¢
O•¢
O•/
0.3
--
..............
0.2
i...............
0
O I 2
3 4 5
6
HEAD (ft.)-
ABOVE ELEVATION OF HOLES
60-
H
50
W
U
a
x
V
V) 40
0
30
rw
E0
0
0 2 4 6 8 10 12 14 16 18 20
TIME ( hrs . )
HYDROLOGY SUMMARY
POND 1. D.
A
g
G
E
F
G 2
H 3
1
TRIBUTARY AREA (AC)
201
36
75
8
3¢
235
135
29
AMC II CN
77
8¢
75
9B
72
68
77
76
10 YEAR VOLUME (AF)
5.7
A 8
/,7
0-6-
O. 6
2.6
3.9
O.8
10 YEAR
DISCHARGE (CFS)
51
33
21
12
6
/9
4�
15
25 YEAR VOLUME (AF)
8.4
2.4
2.6
0.7
/10
4.5
5.8
25 YEAR
DISCHARGE (CFS)
7S
45
31
/5
/0
3¢
61
22
100 YEAR
13.¢
6
¢.Z
/-0
/. 7
8.4
91 /
/•8
VOLUME (AF)
100 YEAR
/Zo
65
52
22
16
63
103
35
DISCHARGE (CFS)
10 YEAR PEAK
OUTFLOW (CFS)
1-3
O•¢
O•¢
O•/
0.3
-
-
0.2
I. Includes all areas contributing to pond, either directly or from ditches
2. Existing pond utilized for flood routing, not sediment storage
3. Existing pit; no outlet works or spillway required
10 YEAR - 24 HOUR
FLOOD ROUTING
INFLOW HYDROGRAPH
Volume = 5.7 a. f.
Peak = 51 cfs
T p = 1.02 hrs.
Permit Number #:
T b = 2.70 h r 5. Class: pvermit
centroid= 1.24 hrs. sZExMha
i Class: ❑ Revision
Typelseq_._. --- -------- ._._.___._._ _.-----------------
.___. _- ._.___.
Class: ❑ Report ❑ Hydro oaenemi
DM Type
OAPP
I. ❑Bond OEnforce O Inspect
."tai "s
1
4V' } Y
� a :�U;
ENERGY FUELS COMPANY
PLATE II
SEDIMENTATION PONDS
HYDROLOGY AND HYDRAULICS
Energy Mine 3
004698
DESIGNED DEB
TRACED H
Leonard Rice Consulting Water Engineers. Inc CHECKED LH B
Jos Ho.307EFC05 I 10 -15 -1980 ISH[tT Or