PERMFILE137339

• Permit No: M1977300
• IBM Index Class Name: Permit File
• Doc Date: 7/15/1983
• Doc Name: WASTE PILE RECLAMATION PORTION OF EAST PILE TO BE REMOVED
• Section_Exhibit Name: SHEET 2 OF 5
• Media Type: M
• Archive: No

m-
m
Y
W
W
U
6650
6600
6700
Y.
W
W
or
6650
/
6600
7
REMOVE PART OF WASTE MATERIAL
,SLOPE THE REMAINING PART 2(H) :1IV) OR FLATTER
SECTION 30
1 = 50'
J REMOVE PART OF WASTE MATERIAL
SLOPE THE REMAINING PART 2(H): 1(V) OR FLATTER
SECTION 40
1$I = 50'
S�
W
PLAN
1" =50'
6700
Y
w
W
x
6650 dl
I
6600
6700
Y
w
W
6650 LI
RECOMMENDED LIMITS
OF REMOVAL\
SECT ION 10
1°= 50'
i
PASTE MATERIAL
i
�REMOVE ALL WASTE MATERIAL
SECTION 20
1 °= 50,
a�
'ROXIMATE EXISTING IMITS
EAST WASTE ROCK PIL —
to
665
EAST PILE REMOVAL NOTES
3.0
2.5
r 2.0
w
w
w
cn
a
LL
O
In
w
O
U Li
w
).
0.5
0°
10° 20" 3u
SLOPE OF THE PILE FOUNDATION
3UMED 5 FT. ABOVE
SURFACE (PILE FOUNDATION)
NOTES:
1. FACTORS OF SAFETY FOP. A PILE DEPOSITED ON TOPOGRAPHIC SURFACES OF DIFFERENT SLOPES HAVE BEEN
CALCULATED USING SPENCER STABILITY ANALYSES. BOTH DRY AND WET CASES (A 6 B) WERE ASSUMED.
SHEAR PLANE WAS ASSUMED TO DEVELOP IN COLLUVIAL SOILS. SHEAR STRENGTH OF COLLUVIAL SOILS:
�= 30 °. C =0•
2. FACTOR OF SAFETYF = 1.5WAS
SSELECTED DEFINE THE CRITICAL SLOPE OF THE PILE FOUNDATION,
WET IONS (CURVE
3. CRITICAL FOUNDATION SLOPE OF 160 WAS ESTIMATED.
4. PILE PORTIONS DEPOSIT ED OONF SLOPES 10FLATTER THANE THE THAN
CRITICALC SLOPE AL SLOPE W E REMOVED.
WILL BE EFT IN PLACE.
ESTIMATION OF MAXIMUM ALLOWABLE SLOPE
FOR PILE FOUNDATIONS
1. THE EXTENT Or REMOVAL OF UNSTABLE EAST PILE PORTION IS SHOWN ON THE PLAN
VIEW AND 4 CROSS SECTIONS.
2. APPROXIMATE YARDAGE OF WASTE MATERIAL TO BE REMOVED IS 13,000 YD3.
3. THE WASTE MATERIAL SHALL BE STRIPPED TO THE ORIGINAL TOPOGRAPHIC SURFACE.
4. THE WASTE MATERIAL SHALL CE REDEPOSITED IN ANY AREA WITHIN THE LIMITS OF
THE WASTE PILES EXPANSIUNS DEFINED IN THE PLANS.
5. REDEPOSITED WASTE MATERIAL PILL BE SPREAD IN LAYERS NOT EXCEEDING 24
INCHES IN THICKNESS AND COMPACTED BY THE CONSTRUCTION EQUIPMENT.
6. SUPERYISIUNNOFR THE PGEOTECHNIOCAL ENGINEER MATERIAL
R OR ENGINEERING RSTAFFNMEMBER.
1. THE SUPERVISOR WILL VERIFY THAT NO PILE PORTIONS ARE LEFT OK NATURAL
SL07ES STEEPER THAN 16 °.
B. IF TOPSOIL LAYER IS REMOVED DURING STRIPPING OF THE WASTE MATERIAL, NEW
TOPSOIL WILL BE PLACED ON SUCH LOCATIONS AFTER STRIPPING ACCORDING TO
COTTER CURRENT STANDARDS.
9. AREAS OF STRIPPING WILL BE VEGETATED FOLLOWING THE REMOVAL ACCORDING TO
COTTER CURRENT STANDARDS.
.iil 1 r
MINED LAND RE
Colo. Dept. of Natl
,off - GGv' I
A���� COTTER CORPORATION
MCDERMDENIGR. ASSOC.
INC. SCHWARTZWALDER fl7ilhlE
GEO HYDFO CONSU T.. WASTE PILE RECLAMATION
H-
PORTION OF EAST PILE
TO BE REMOVED
SCALE DATE SHT. NO.
1" = 50' 6/30/83 2 of 5
Proj. No. 009 - 009
IIgWI���
204
A NO GROUND
--F-
WATER PRESE
T
IN WASTE
MATERIAL
B
GROUNDWATER AS
OLD TOPOGRAPHIC
CRITICAL
SLOPE (160)
0.5
0°
10° 20" 3u
SLOPE OF THE PILE FOUNDATION
3UMED 5 FT. ABOVE
SURFACE (PILE FOUNDATION)
NOTES:
1. FACTORS OF SAFETY FOP. A PILE DEPOSITED ON TOPOGRAPHIC SURFACES OF DIFFERENT SLOPES HAVE BEEN
CALCULATED USING SPENCER STABILITY ANALYSES. BOTH DRY AND WET CASES (A 6 B) WERE ASSUMED.
SHEAR PLANE WAS ASSUMED TO DEVELOP IN COLLUVIAL SOILS. SHEAR STRENGTH OF COLLUVIAL SOILS:
�= 30 °. C =0•
2. FACTOR OF SAFETYF = 1.5WAS
SSELECTED DEFINE THE CRITICAL SLOPE OF THE PILE FOUNDATION,
WET IONS (CURVE
3. CRITICAL FOUNDATION SLOPE OF 160 WAS ESTIMATED.
4. PILE PORTIONS DEPOSIT ED OONF SLOPES 10FLATTER THANE THE THAN
CRITICALC SLOPE AL SLOPE W E REMOVED.
WILL BE EFT IN PLACE.
ESTIMATION OF MAXIMUM ALLOWABLE SLOPE
FOR PILE FOUNDATIONS
1. THE EXTENT Or REMOVAL OF UNSTABLE EAST PILE PORTION IS SHOWN ON THE PLAN
VIEW AND 4 CROSS SECTIONS.
2. APPROXIMATE YARDAGE OF WASTE MATERIAL TO BE REMOVED IS 13,000 YD3.
3. THE WASTE MATERIAL SHALL BE STRIPPED TO THE ORIGINAL TOPOGRAPHIC SURFACE.
4. THE WASTE MATERIAL SHALL CE REDEPOSITED IN ANY AREA WITHIN THE LIMITS OF
THE WASTE PILES EXPANSIUNS DEFINED IN THE PLANS.
5. REDEPOSITED WASTE MATERIAL PILL BE SPREAD IN LAYERS NOT EXCEEDING 24
INCHES IN THICKNESS AND COMPACTED BY THE CONSTRUCTION EQUIPMENT.
6. SUPERYISIUNNOFR THE PGEOTECHNIOCAL ENGINEER MATERIAL
R OR ENGINEERING RSTAFFNMEMBER.
1. THE SUPERVISOR WILL VERIFY THAT NO PILE PORTIONS ARE LEFT OK NATURAL
SL07ES STEEPER THAN 16 °.
B. IF TOPSOIL LAYER IS REMOVED DURING STRIPPING OF THE WASTE MATERIAL, NEW
TOPSOIL WILL BE PLACED ON SUCH LOCATIONS AFTER STRIPPING ACCORDING TO
COTTER CURRENT STANDARDS.
9. AREAS OF STRIPPING WILL BE VEGETATED FOLLOWING THE REMOVAL ACCORDING TO
COTTER CURRENT STANDARDS.
.iil 1 r
MINED LAND RE
Colo. Dept. of Natl
,off - GGv' I
A���� COTTER CORPORATION
MCDERMDENIGR. ASSOC.
INC. SCHWARTZWALDER fl7ilhlE
GEO HYDFO CONSU T.. WASTE PILE RECLAMATION
H-
PORTION OF EAST PILE
TO BE REMOVED
SCALE DATE SHT. NO.
1" = 50' 6/30/83 2 of 5
Proj. No. 009 - 009
IIgWI���
204