2012-08-21_REVISION - M1980244 ‎(27)‎

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Date: 8/21/2012
• Doc Name: MLE2 STORM WATER PLAN, SHEET 2 OF 6
• From: CC&V
• To: DRMS
• Type & Sequence: AM10
• Email Name: TC1
• Media Type: M
• Archive: No

s�
\1
500 0
500
1000
c ;
_, 1
SCALE:ft
S
-mod
=�
,'_ %
Future =
o
l" µ�
EMP -22
,
, _
Existing EMP -1
,
i
�) � G" � 5. P �� �
�
l
Historic Area
-;
o P 9• Es 1 WHEX --D1 [6) -,�
� a
MC4E 2 0 � �� 40.9 Acres 46
Q
�� -
Buffer
r ES
o�� 35 I 22 cfs 3.2 AF
;;
,��
�
PG
-E
ass
�G�
(0P
�
r
O•
_
N NG
IO J.S y, oo _
- -
EMP -09
Q
,
--
1 A
30.4 Acres 38.2 cfs
"' �
5115
PG C
17.6 cfs 2.1 AF
PG-F
is
F
F
Lo
`P
P&B
zany
d
NC -B1
-__ N G)
C�
21.4
Acres
34
B129.0
14.3 cfs cfs
3.2 AF Tributary to
23.1 Acres- cfs NC-B
, Ironclad Facility and
r,
o . cfs . �ai3a
f 2
144 0 AF
DEN TREES � �
Minin Areas
9 ,
!p , =I
' EMP -21
r\
hr
p
Nca
NC
-A1
11/Z
PO -A1
27158
48.2
Acres 56 cfs -
, 9.4 Acres 23.4 cfs
/i 11.2 cfs 1.9 AF
F
Jb
vo�h
a�
27 cfs 3.9 AF %
N
°
°
0
0004 7N/1
a
)
w, - y .
T ES o
Tributary to
Squaw VLF Storm
N, N � � � \ \ OAK-)
� � � , , , _ _
$° Tributary to -'� -
I Squaw Gulch
Water Mgmt.
Area
>; F,
OSA
-
0
,
e
Q
Refer to
Squaw VLF
' Storm Water Plan
4000% d,// °- 0
0111I
)
Basins and Diversion Channels - Existing
Conditions and During Mining Development
Plan View
Legend
1 " =500 ft (DSize)
Basin Name
Area __ jlzcosA-2, 10 e z �t5 Discharge
10yr Discharge- a1 cfs 10 AcreFeet 2 x 10yr Volume
EFA Channel Name
100 -yr Discharge (cfs)
10 yr Discharge (cfs)
■ ■ i ■ ■ m ■ ■ Temporary or Existing Channel
ff■ l if f� l f� l ii ff• Proposed New Channel
■ ■ ■ ■ ■ ■ ! ■ Mining Boundary
Basin Boundary
Alternate
Land Use 1
Land Use 2
Land Use 3
I
I
Pond Size as
Receiving EMP
i
Arithmetic '
Current or
( )
Receiving
1
_ ? 1
l
Average Runoff
Design
Function of
Basin
EMP during
:'design
Total Area
CN1
Areal
S(in)
I Q1
CN2 Area2 S(in) I Q2
CN3 I Area3 I S(in) ! Q3
Volume; Design Criteria
1 Volume
Basin Area
Description
1
CN I
Mining
(Ac -Ft) !
(Ac -Ft)
(AF perAcre)
3
WHEXA1
EMP018
2.70 1
22.80
66 1
6.8 1
5.15
1 0.41
71 I 14.82 4.08 1 0.59
90 1 1.14 i
1.11 1 1.71
70.45 1 1.1 I
2.3
0.10
WHEX B1
EMP018
2.70 1
13.60
66 1
4.1 1
5.15
1 0.41
71 8.16 1 4.08 j 0.59
90 1.36
1.11 1 1.71
71 1 0.7 1
1 1.5
0.11
WHEX C1
EMP018
2.70 1
28.50
66 1
28.5 1
5.15
B 0.41
I
66 1 1.0
1.9
0.07
WHEX D1
EMP010 Mine
2.70 1
40.90
66 1
38.0
5.15
1 0.41
90 1 2.863 1.11 1.71
68 1.7
3.4
0.08
WHEX E1
EMP019 Mine
2.70 I
105.30
66 1
27.4
5.15
1 0.41
71 :77.922 1 4.08 1 0.59
70 l 4.8
1 9.6
0.09
ECOSA-A1
EMP016
2.70
47.60
66 !
44.7
5.15
I 0.41
90 2.856 1 1.11 1.71
'
67 1 1.9
1 3.9
0.08
ECOSA -B1
EMP017
2.70
59.50
71 I
59.5
4.08
1 0.59
1 1
j'
' i
71 1 2.9 III;
5.9
0.10
ECOSA-C1
EMP017
2.70
33.60
71
11.8
4.08
1 0.59
50 16.8 1 10.00 0.05
90 5.04
1.11 1 1.71
63 1 1.4
I 2.7
0.08
ECOSA-D1
EMP017
2.70
20.80
71
4.2
4.08
1 0.59
6
66 1 16.64 5.15 1 0.41
I
i ;
67 1 0.8 1
j 1.5
0.07
ECOSA -E1
EMP020
2.70
110.60
66
104.0
5.15
I 0.41
90 I 6.636 1 1.11 1.71
i
I
67 4.5 I
I 9.0
0.08
EMP -10 Total
Removed by WHEX
2.70 1
40.90
Ponds are sized for 2 times the 10- yr /24 -hr discharge volume from contributing 1.7 2xv10
3.4
0.08
EMP -016 Total
Existing
2.70
47.60
1 basins if there's no outlet (terminal structures); or for the 10- yr /24 -hr volume if pond 1 4.8 V1 -Flow Through 4.8
0.10
EMP- 017Total
Rebuilt Cameron Ponds
2.70 1
113.90
1 3 9.9 2xV10
1 is fitted with pert pipe and volume evacuates to a downstream terminal EMP. Note 1 1
19.7
0.17
EMP -018 Total Above WHEX High Wall - Pumpe
2.70 1
64.90
2.8 2xV10
5.7
0.09
1 that the flow from basins may go to different EMP ponds throughout the life of 1 1
EMP -019 Total
Removed by WHEX& Rebuilt
2.70 1
105.30
I
1 7.6 V10- Flow Through
7.6
0.07
I
1
1
1 mine as whown on the drawing, so these Design Volumes should be considered 1 1
EMP -020 Total
Eastof Cameron
2.70 1
110.60
1
1 4.5 2xV10
as a guideline for reference purposes. I 1
1 9.0
Avg 0.09
NC -A1
EMP -8a
2.70 1
48.20
90
4.8
1.11
1.71
50 1 27.5 1 10.00 1 0.05
90 1 15.9 1.11 1 1.71
67 3.1
6.1
0.13
NC -B1
EMP8a
2.70 1
21.40
€
50
1
11.8
10.00
1
1 0.05
90 9.6 1.11 1.71
1
1
68 1.4
1
2.8
0.13
NC -C1
EMP8a
2.70 1
15.80
66
7.9
5.15
0.41
j
50 7.9 10.00 0.05
I 1 1
58 1 0.3
0.6
0.04
NC -D1
EMP8a
2.70 i
6.30
66
3.2
5.15
1 0.41
71 1 3.2 4.08 0.59
¢
69 1 0.3 1
0.5
0.08
NC -E1
EMP8a
2.70
5.43
66 1
2.7
5.15
0.41
71 1 2.7 3 4.08 1 0.59
1 1
69 I 0.2 1
0.5
5
EMP8a Total
Existing Depression Area
I
91.70
66 1
11.1 i
1
i 1
R, 5.3 2xV10
1 10.5
lAvg 0.10
PG -A1
EMP -021
2.70 1
22.40
66 1
11.2
5.15
1 0.41 71 11.2 4.08 1 0.59 69 0.9
1 1.9
0.08
PG-B1
EMP -021
2.70
23.10
66 1
8.1
5.15
1 0.41 71 15.0 4.08 1 0.59 E 1 69 1.0 1
1 2.0
0.09
PG -C1
EMP -009
2.70 1
31.90
66 1
31.9
5.15
0.41 1 d 66 1.1
2.2
0.07
PG-Dl
EMP -009
2.70
30.40
66 1
30.4
5.15
1 0.41 1 1 ) 1 66 ! 1.0
2.1
0.07
PG-El
EMP -009
2.70
8.60
66 1
8.6
5.15
0.41 1 1 66 1 0.3
1 0.6
0.07
PG -F1
EMP -009
2.70
12.80
66 1
12.8 1
5.15
0.41 ! 1 1 66 1 0.4
0.9
0.07
P G -G 1
EMP -022
E1
2.70 E
19.70
66
•
19.7 !
5.15
1 0.41 1 € 1 1_ 1 66 € 0.7
5 E 3
1.3
0.07
EMP -22 Total Flow
Future - Near End of Mining
E
1
19.70
1
19.7
3 3
0.7 2 x V1 o
1.3
EMP -21 Total Flow
Replaces EMP8a
I
45.50
1
45.5
1
I 2.0 1 2xV10
I 3.9
1
1
Pond Sizes for 2 times the 10- yr /24 -hr discharge volume from contributing basins. `
1
Four Ponds - 3 are removed &
i
EMP -9 Total Flow
replaced
2.70 1
83.70
83.7
2.9 1 2xV10
5.7
Avg 0.08
Vindicator
VIN -A1
EMP013
2.70 1
57.30
90 1
1.1 1
1.11
1 1.71
50 1 28.7 10.00 1 0.05
66 1 27.5 5.15 1 0.41
58 1 1.2 1
1 2.4
0.04
Land Use
- SCS Curve Number Criteria Design Precipitation Depths and
Return
Calculation of Excess Precipitation for
Curve No.
Land Use Period Criteria
Each Land Use (SCS Method)
90
Compacted Roadways and Crestof
2 Yr /24 -Hr 1.8
Inches
S= Potential Retention (inches) = (1000- 10xCN) /CN
Stockpiles
Precipitation
10 Yr /24 -Hr 2.7
inches
Excess Precip (Q in inches) = (P- 02xS)2 /(P- 0.8xS)
Depths
71
Pre -and Post Reclamation Grassed
100 Yr /24-Hr 3.5
inches
Runoff from each land use area is independentof
Area or Revegetaton
others within the same basin because the runoff is
66
Post Reclamation Forested, Pre- mining
independently collected by channels. Therefore,
Natural Areas
Excess Precip (runoff) values from each land use are
summed to provide the total volume from each basin.
50
Overburden Fill Areas Face of Stockpiles
The EMP storage volume is based on the sum of the
runoff from contributing basins.
Summary of Calculated Pond Sizes Based on Land
2 )Table
Use
NO. DATE MADEBY CKD.BY
REMARKS
Cresson Mine Steffens and
Associates, Inc.
ZIL 1211/11 SDS
Preliminary Issue For Review
Water
near Victor CO %tettens'
Resources - Environmental - Mining Engineering
U)
0 1/7/12 SIDS ME
Added Details and Tables
Inc Golden, CO 80403 - 0:303.210.1801 - C:303.378.8181
Z
C'
0 1/30/2012 SIDS ME/TC
Accepted for Use and Distribution
MLE2 Storm Water Plan CLIENT: CC$V Gold
Mining Co.
g
8/15/2012 SIDS
Added North Annwand Bar Scale
;
'
W
Aft. Drawing Number
�� -- Poverty Gulch Basins and
Scale
DRAWING NO.
0
- Summary Table Sht 2 of 6
Noted CCV10 -SA