PERMFILE48266

• Permit No: M2004067
• IBM Index Class Name: Permit File
• Doc Date: 8/20/2005
• Doc Name: Construction of Processing Plant Area
• From: Banks and Gesso
• To: DMG
• Section_Exhibit Name: C-2B
• Media Type: M
• Archive: No

ON,A-1
SECTION A -� SE C�
I - DIVERSION DITCH A. PERMANENT 4' TO 6' WIDE 2' TO 25' DEEP
-� UNDISTURBED AREA DIVERSION DITCH. WHERE DITCH IS NOT
- _ EXCAVATED IN ROCK, LINE WITH 12 MEDIAN
■ ' __ _ ___ - - - _ DIAMETER RIPRAP
■
\\ ■ ` \ \ BUILD WASTE ROCK
�\ \ PILE UPSLOPE INITIAL LOCATION FOR
EXCESS CUT MATERIAL
\■ P� \ \ _ FROM PROCESSING AREA
cam\ �� � ♦' � ��
-747-5
■ �� �\ ` 051 r
■ �� �� S
■ _�`� PROCESSING PLANT AND PRO DUCT
STOCKPILE AREA
UNDERDRAIN OF COARSE 6" MEDIAN \P� ; �` APPROX. 4 ACRES AT 7200 FT. ELEV.
DIAMETER ROCK WITH LESS THAN 10% �Q� \` ' (AREA EXCAVATED AND EXCESS CUT MATERIAL PLACED
I PASSING THE #200 SIEVE IN THALWEG �G i / TEMPORARY WASTE ROCK PILE)
TO CONVEY SUBSURFACE FLOWS Gj
STOCKPILED ROCK (TEMPORARY) - -
I \
AND WASTE ROCK (PERMANENT) \ f
■ TO BE DUMPED AND MOVED FROM
■ HAUL ROAD 8Y DOZER OR LOADERS `
■ TEMPORARY'SEDIMENT POND B -
ICAPACITY 37,200 FT'
I
I
SCALE HOUSE OFFICE
--.M1, -11 -. irI CR CULVERT
.ES
'LANT
♦ O�A g�3
■ - - - OVERALL SLOPES IN THIS
AREA NO GREATER THAN 1.25V:1H <' 1\ �\ \ ♦ ��
AREA OF DISTURBANCE ,h
I - - - FAR PROCESSING PLANT `� TEMPORARY 48" DIAMETER CULVERT
AREkCONSTRUCTION I Ox�
- "K. v 1
■ EXISTING ROAD - _ 14.3% r '
IX
ww� 014
ev-
__ -- INTERNAL HAUL ROAD TO
-- --
TEMPORARY WASTE ROCK
f?Hlt low STORAGE AREA
_ --
a,
--------- - - -
_- -- - i ------ --'\ � TEMPORARY
-- - -- - - ,
CAP CI 220,000 FT' \.
(SPILLWAY VATION < 10'
- - - - -- - �e_ -•.. r --- 5� �� \\ �i. FR M STREAM BED) y� \
. .
LEGEND 7`'' ` SF
.. . ■ ■ • ■ ■ PERMIT BOUNDARY
MINING LIMITS / \ \\
.`�. \ �.
SF
RIGHT OF WAY
PAVED ROAD
- UNPAVED ROAD \ '/
- - DITCH /WATERWAY �`• S ��.•_
} - - - - - - DIVERSION DITCH
> FLOW DIRECTION
EXISTING INDEX CONTOUR
EXISTING INTERMEDIATE CONTOUR
PROPOSED INDEX CONTOUR
PROPOSED INTERMEDIATE CONTOUR
EXISTING STRUCTURE
;F ,F SILT FENCE
0 STREET LIGHT
OHU OHU OVERHEAD UTILITY
5 5 SEWER LINE (UNDER CONSTRUCTION)
EXISTING 6'X8' CONCRETE
BOX CULVERT
GRAPHIC SCALE
0 50 100
( IN FEET )
1 inch = 100 ft.
CONTOUR INTERVAL = 5
DIVERSION DITCH B PERMANENT 6' WIDE 3' DEEP
UNDISTURBED AREA DIVERSION DITCH
� S
S
MAIN ACCESS ROAD
RIPRAP PAD WHERE DIVERSION JOINS CHANNEL
DIVERSION DITCH
HAUL ROAD
25' BENCH (TYP. FOR SW WALL)
EXISTING GROUND
50' FACE (TYP. FOR SW WALL)
1.0
ACCESS ROAD
L 1
OVERALL SLOPE NOMINAL ELEVATION 7200 DIVERSION DITCH B
08
OVERALL SLOPE
TYPICAL SECTION ACROSS PROCESSING PLANT AREA
NOT TO SCALE
W (WIDTH) -
v
D (DEPTH)
RIPRAP SPILLWAY
TYPICAL SPILLWAY
RIPRAP LINED EMERGENCY SPILLWAY Imo- L (LENGTH) -
-\ � -- DISTURBED AREA DRAINAGE
\\
I D (DEPTH)
/-�P.) NOTES:
I 1. POND CONFIGURATION MAY VARY AS MINING PROGRESSES.
PRINCIPAL SPILLWAY (CONFIGURATION MAY VARY) 2. CONSTRUCT PRINCIPAL SPILLWAY RISER PIPE OR OTHER
WATER QUALITY CONTROL OUTLET WITH ORIFICES TO
EPHEMERAL CHANNEL ALLOW WATER ABOVE SEDIMENT LEVEL TO DISCHARGE IN 72
HOURS.
B
(ft)
SEDIMENT POND
DEPTH
WIDTH
AVERAGE DEPTH
"VOLUME
A
2'
10'
B
2'
10'
C
3'
25'
TYPICAL SPILLWAY
RIPRAP LINED EMERGENCY SPILLWAY Imo- L (LENGTH) -
-\ � -- DISTURBED AREA DRAINAGE
\\
I D (DEPTH)
/-�P.) NOTES:
I 1. POND CONFIGURATION MAY VARY AS MINING PROGRESSES.
PRINCIPAL SPILLWAY (CONFIGURATION MAY VARY) 2. CONSTRUCT PRINCIPAL SPILLWAY RISER PIPE OR OTHER
WATER QUALITY CONTROL OUTLET WITH ORIFICES TO
EPHEMERAL CHANNEL ALLOW WATER ABOVE SEDIMENT LEVEL TO DISCHARGE IN 72
HOURS.
RIPRAP PAD AT TOE ' 10 -YEAR / 24 -HOUR RUNOFF
OF SPILLWAY "* 10 -YEAR / 24 -HOUR RUNOFF (TEMPORARY)
PRELIMINARY SEDIMENT POND PROFILES
(FINAL DESIGN AS REQUIRED BY CDPS PERMIT)
NOT TO SCALE
1' HIGH, 3' WIDE BERMS TO PREVENT PIT FLOOR RUNOFF FROM ENTERING DIVERSION
1' MIN. FREEBOARD
H
d
go
t
B
DITCH B CROSS SECTION
1' MIN. FREEBOARD
H
d
ADJUST ALIGNMENT AND /OR
HEIGHT (H) 50 THE DEPTH (d)
CHANNEL
SECTION
B
(ft)
SEDIMENT POND
LENGTH
WIDTH
AVERAGE DEPTH
"VOLUME
"EMERGENCY
SPILLWAY FLOW
6.0
3.0
A
55'
30'
8.0'
13,100 FT
2.2 CFS
B
65'
65'
85
54,900 FT
15.6 CF5
C
100'
130'
17'
193,000 FT
59.5 CF5
RIPRAP PAD AT TOE ' 10 -YEAR / 24 -HOUR RUNOFF
OF SPILLWAY "* 10 -YEAR / 24 -HOUR RUNOFF (TEMPORARY)
PRELIMINARY SEDIMENT POND PROFILES
(FINAL DESIGN AS REQUIRED BY CDPS PERMIT)
NOT TO SCALE
1' HIGH, 3' WIDE BERMS TO PREVENT PIT FLOOR RUNOFF FROM ENTERING DIVERSION
1' MIN. FREEBOARD
H
d
go
t
B
DITCH B CROSS SECTION
1' MIN. FREEBOARD
H
d
ADJUST ALIGNMENT AND /OR
HEIGHT (H) 50 THE DEPTH (d)
CHANNEL
SECTION
B
(ft)
H
(ft)
SLOPE
(ft /ft)
CAPACITY
(ft3)
d
(ft)
V
(fps)
B -1
6.0
3.0
0.0702
218
2.0
12.1
B -2
6.0
3.0
1.78
WATER FALL EFFECT
B -3
6.0
3.0
0.0192
114
2.0
6.33
B -4
6.0
3.0
0.200
368
2.0
20.4
CHANNEL
SECTION
B
(ft)
H
(ft)
SLOPE
(ft /ft)
CAPACITY
(ft)
d
(ft)
V
(fps)
A -1
4.0
2.0
0.0581
39.7
1.0
7.2
A -2
4.0
2.0
0.438
109
1.0
19.8
A -3
6.0
2.5
0.0266
79.2
1.5
6.4
A -4
6.0
2.0
0.413
152
1.0
20.2
A -5
6.0
2.0
0.143
91.5
1.0
12.2
A -6
1.0
25.0
0.198
94.8
1 1.0
12.6
B - I FLOWS IN COMPETENT ROCK
NOTES:
1. BASE WIDTH AND CHANNEL HEIGHT ARE MINIMUM VALUES.
DITCH A CROSS SECTION 2. SIDE SLOPES 151 MAXIMUM.
3. CUT CHANNEL DEEPER IF REQUIRED TO REACH COMPETENT ROCK.
TYPICAL DIVERSION DITCHES 4. WHERE DITCH IS NOT LOCATED ON COMPETENT ROCK, OVER EXCAVATE AND PLACE FILTER
NO SCALE FABRIC, IF REQUIRED, AND PLACE 24" THICKNESS OF 12" MEDIAN DIAMETER RIPRAP ON DITCH
BOTTOM AND SIDES.
NOTES:
1. PROCESSING PLANT AREA AND INTERNAL HAUL ROAD WILL BE CONSTRUCTED AT THE SAME
TIME AS THE MAIN ACCESS ROAD. A 3' MINIMUM HEIGHT (OR AS REQUIRED BY EQUIPMENT)
BERM WILL BE CONSTRUCTED ON THE EDGE OF ALL ROADS WHERE IT IS POSSIBLE FOR TRUCKS
TO RUN OVER EDGE.
2. WASTE ROCK WILL BE MOVED BACK TO PLANT AREA FOR PROCESSING AFTER PLANT I5
CONSTRUCTED.
3. APPROXIMATELY 826,000 CU. YD. OF MATERIAL WILL BE EXCAVATED FROM PROCESSING PLANT
AREA AND HAUL ROAD CONSTRUCTION.
4. WASTE ROCK PILE FOOTPRINT WILL BE STRIPPED OF SOIL, VEGETATION AND SNOW OR ICE
DOWN TO STABLE BEDROCK PRIOR TO PLACING WASTE ROCK. THE U5EABLE SOIL WILL BE
STOCKPILED FOR USE IN REVEGETATION. A GEOTECHNICAL INVESTIGATION WILL BE
COMPLETED BEFORE WASTE ROCK PLACEMENT TO DETERMINE SLOPE STABILITY. BENCHING OF
THE SUBGRADE WILL BE COMPLETED IF REQUI
5. SEDIMENT POND C SHOWN IS MAXIMUM SIZE REQUIRED AT THE COMPLETION OF THE 10 -YR
QUARRY. THE QUARRY OPERATOR MAY CONSTRUCT AN INTERIM SMALLER POND AT THIS
LOCATION OR OTHER LOCATIONS ON THE PIT FLOOR TO BE INCREASED IN VOLUME AS MINING
PROGRESSES.'
6. SEDIMENT PONDS 14ILL BE INSPECTED FOLLOWING SIG CAN�VVNOFF EVENT AND
SEDIMENT REMOVED I: NECESSARY.
I �4 *°
wear ..
PREPARED UNDER THE SUPERVISION OF:
Permit #: w
Class:
From:
Doc. Name
Doc. Date (if n date
Specialist:
TITLE
I
No
REVISED EXHIBIT C -2B: CONSTRUCTION OF PROCESSING PLANT AREA
RED FOR WASTE ROCK PILE STABILITY.
ME BANKS AND GESSO, LLC CLEAR CREEK DISTRICT WATER PROVIDERS, LLC. MMRR QUARRY
No720 KIPLING St., SUITE 117 DMG REGULAR 112 PERMIT APPLICATION
LAKE'A/OOD, COLORADO 80215 5460 SOUTH QUEBEC ST. SUITE 110 GILPIN COUNTY
(303) 274 -4277 GREENWOOD VILLAGE, CO 80111 COLORADO
JOB NO DATE SCALE DRAWN BY DESIGNED BY APPROVAL REV SHEET
03047 8/16/05 111=100' DRF 3of5