CONSTRUCTION PLANS ARQS DEP25-122 AML Drews Creek A Highwall.pdf
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- Attached to
- AML-Drews Creek A Highwall
- Solicitation number
- ARFQ-0313-DEP2600000006-3
- Issued by
- Raleigh County, West Virginia
About this file
This document is a comprehensive engineering and environmental remediation set of construction plans for the Drews Creek Dangerous Impoundment project, prepared by the West Virginia Department of Environmental Protection's Office of Abandoned Mine Lands and Reclamation, located in Raleigh County, West Virginia. The project involves reclaiming and stabilizing an abandoned mine site, with specific focus on addressing dangerous impoundments and mine voids associated with the Eagle Seam and No. 2 Gas Seam deep mines near Naoma. The plans detail extensive site preparation, including constructing temporary access roads, diversion channels, sediment control measures, and implementing wet mine seal techniques to prevent water infiltration and potential environmental hazards.
The project involves multiple technical components, including horizontal directional drilling into abandoned mine workings, installing wet seal systems, creating erosion and sediment control infrastructure, and rehabilitating the site's drainage characteristics. The engineering plans include detailed profiles, cross-sections, and specifications for road crossings, stream interventions, and environmental protection measures. While specific budget details are not explicitly stated, the comprehensive nature of the plans suggests a significant infrastructure investment aimed at mitigating environmental risks associated with abandoned mine lands. The project appears to be fully funded through the West Virginia Department of Environmental Protection's Office of Abandoned Mine Lands and Reclamation, with a focus on environmental remediation and site stabilization.
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PROJECT
CLAY
ANAWHA
STATE VICINITY MAP
VICINITY MAP
HANCOCK
MONONGALIA MARYLAND
dep
VIRGINIA
9000000 00 F
WEST0000000000
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E000000000000000000000RGINIA
000000000000000 000000000000000
MONTANT
LI
BE
west virginia department of environmental protection
HAROLD D. WARD, CABINET SECRETARY
OFFICE OF ABANDONED MINE LANDS AND RECLAMATION
DREWS CREEK DANGEROUS IMPOUNDMENT
NEAR NAOMA
RALEIGH COUNTY, WEST VIRGINIA
USGS 7.5' QUAD (PILOT KNOB and ARNETT)
S. THORNT
R N T O
AWIL
L
#EGISTE
A
NO. 12364
STATE OF
ONALENNAL
12-12-2024
DATE
ITEM
BOONE
PROJECT
PROJECT SITE
LOCATION
LOCATION MAP
T E R R A D O N
D R E W S C
R E E K
D A N G E
G E R O U
S IM
P O U N D M E N T
R A L E
L E I G H C O U N T Y , W
E S T
VI
RG
IN
IA
T I T L E A N D
I N D E X
S H E E T
TBW
WST
AS SHOWN
11-27-2024
2301-0056-001
COUNTY HIGHWAY MAР, 1" = 1MI.
Drawing
22002200
70 21
2390 238
30 23
10 23
30 22
40 22
2310 2300
20 2260 224
90 21
21802160
21902130
2280 2270
E
E
E
E
N 292000
E
E
N 292000
N 291500 N 291500
N 292000
PROPERTY LINE AND ROAD NUMBER INFORMATION REPRESENTS AN APPROXIMATE
BEST FIT ESTIMATE OF PROPERTY LINE BOUNDARIES AS OBTAINED FROM
COUNTY TAX MAPS ACQUIRED THROUGH THE WEST VIRGINIA STATE TAX
DEPARTMENT IN CHARLESTON, WV. PROPERTY LINES SET OUT AND DESIGNATED
WITHIN THESE CONSTRUCTION PLANS DO NOT REPRESENT A TRUE AND ACCURATE
BOUNDARY SURVEY.
DIP
STRIKE
EAGLE
COAL SEAMDISCLAIMER:
STRIKE AND DIP FROM EASTERN ASSOCIATED,
KOPPERSTON NO. 1 MINE, FINAL MAP,
EXTENDED DATE: JUNE 13, 1998
W E
S T
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IN
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PREVIOUS BORROW AREA
EXISTING
ACCESS ROAD
FROM CO. RT 10/1
GAS
WELL
APPROXIMATE LOCATION OF
ABANDONED EAGLE SEAM DEEP MINE
EXISTING DITCH CONSTRUCTION AS PART OF
PREVIOUS RECLAMATION PLAN
APPROXIMATE LOCATION OF
ABANDONED NO.2 GAS SEAM
DEEP MINE (KOPPERSTON NO. 2)
APPROXIMATE LOCATION OF
ABANDONED EAGLE SEAM DEEP MINE
APPROXIMATE LOCATION OF
ABANDONED NO. 2 GAS SEAM
DEEP MINE (KOPPERSTON NO. 2)
EXISTING DRY SEAL
EXISTING GAS RISER/
METER HOUSE
CP# NORTHING EASTING ELEVATION DESCRIPTION
SURVEY CONTROL
1 291652.91 1824284.86 2120.34 REBAR WITH CAP
2 291864.09 1824529.06 2124.65 REBAR WITH CAP
PIEZOMETER
N: 291188.2516 E: 1824384.8843
BOTTOM OF VOID
EL: 2134.10
GAS
RISER
EXISTING
2-12" Ø PIPES
INV. = 2145.12
IRON WATER DISCHARGE POINT
CONSTRUCTION LIMITS
EXISTING CULVERT
DESCRIPTIONSYMBOL
EXISTING UNPAVED ROAD
EXISTING MINE PORTAL
EXISTING TREELINE
PROPERTY LINE
EXISTING INDEX CONTOURS
EXISTING INTERMEDIATE CONTOURS
EXISTING GAS LINE
EXISTING STREAM
BOREHOLE LOCATION
SURVEY CONTROL POINT
TAX MAP AND PARCEL NUMBER
EAGLE SEAM DEEP MINE WORKINGS
EAGLE SEAM STRUCTURE CONTOURS2130
NOTES: 1. THE EAGLE SEAM STRUCTURE CONTOURS REPRESENT THE APPROXIMATE BOTTOM ELEVATION
OF THE EXISTING DEEP MINE AND DO NOT EXTEND TO THE EAGLE SEAM OUTCROP.
2. THE ABANDONED EAGLE SEAM DEEP MINE WORKINGS AND STRUCTURE CONTOURS
SHOWN ARE FROM EXISTING MINE MAPPING AND ARE FOR INFORMATION PURPOSES ONLY.
3. THE ABANDONED NO. 2 GAS SEAM MINE WORKINGS SHOWN ARE FROM EXISTING MINE
MAPPING AND ARE FOR INFORMATION PURPOSES ONLY.
4. THIS PROJECT IS ENCOMPASSED BY A SINGLE PROPERTY OWNER AND ALL PROPERTY LINES
ARE LOCATED OUTSIDE OF THE SHEET BOUNDARY.
5. BASE MAPPING IS A COMBINATION OF FLOWN MAPPING PROVIDED BY THE WVDEP IN 2013 AND
LIDAR FROM THE US GEOLOGICAL SURVEY.
NO. 2 GAS SEAM DEEP MINE WORKINGS
TM-24
P-25
LEGEND
P-1
P-1
EXISTING DRYER
TANK VALVE
EXISTING WET SEALS
EXISTING WET SEAL
EXISTING
60"Ø CMP
INV. = 2105.24
EXISTING
60"Ø CMP
INV. = 2109.98
WITH ROCK
HEADWALL
PORTAL AREA PREVIOUSLY RECLAIMED BY OTHERS
CURRENT WET SEAL FAILURE
IRON WATER SEEP OUTLET
IRON WATER SEEP LIMITS
DREWS CREEK
DANGEROUS IMPOUNDMENT
DI - CLOGGED WET SEAL
PRODUCING APPROX. 150 GPM
EXISTING
18" Ø STEEL PIPE
INV. 2122.87'
EXISTING
2-24" Ø HDPE
INV. 2117.99'
EXISTING
2-24" Ø HDPE
INV. 2116.39'
EXISTING
18" Ø STEEL PIPE
INV. 2116.95'
EXISTING
GAS VALVE
TM-24
P-25
TM-24
P-25
TM-24
P-25
TM-24
P-25
EXISTING FLOW DIRECTION
E ng in ee rin g ·
S ur ve yi ng L an d
P la nn in g T es tin g
In sp ec tio n (3
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STRUCTURE CONTOURS (EAGLE SEAM)
EXISTING
WETLAND
MAP "INSET"
SCALE : 1" = 50'
END PAVEMENT DREWS C
REEK R
D. C O. R
T. 1 0/1
PARKING
LOT
BUILDING
(CHURCH)
EXISTING
WETLAND
P-2A
PIEZOMETER
N: 291262.4240 E: 1824400.4890
BOTTOM OF VOID
EL: 2134.87
EXISTING
12" Ø PIPE
TOP EL. = 2118.65
EXISTING
12" Ø PIPE
TOP EL. = 2118.47
P-2 P-2 N: 291277.6 E: 1824403.0
EXISTING WETLAND
2140 2160
70 21
90 21
21802160
2280 2270
2390 238
30 23
10 23
30 22
40 22
227022
20 2260 224
21902130
E
E
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N 292000
100+60100+00
0'
40'
E
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N 292000
N 291500 N 291500
202+98
200+00
201+00
202+00
C'
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D'
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F'F
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103+56
100+00
101+00
102+00
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1+
302+00
303+00
304+00
305+00 305+14
0+
1+
402+00 402+52
500+00 501+00 501+56
600+00
601+00 601+33
700+00 701+00 701+79
900+00
901+00
2+
3+
3+
C'
802+35
800+00
801+00
802+00
0+85
0+00
E'
I
I'
J'
J
PROPERTY LINE AND ROAD NUMBER INFORMATION REPRESENTS AN APPROXIMATE
BEST FIT ESTIMATE OF PROPERTY LINE BOUNDARIES AS OBTAINED FROM
COUNTY TAX MAPS ACQUIRED THROUGH THE WEST VIRGINIA STATE TAX
DEPARTMENT IN CHARLESTON, WV. PROPERTY LINES SET OUT AND DESIGNATED
WITHIN THESE CONSTRUCTION PLANS DO NOT REPRESENT A TRUE AND ACCURATE
BOUNDARY SURVEY.
DIP
STRIKE
EAGLE
COAL SEAMDISCLAIMER:
STRIKE AND DIP FROM EASTERN ASSOCIATED,
KOPPERSTON NO. 1 MINE, FINAL MAP,
EXTENDED DATE: JUNE 13, 1998
EXISTING
60"Ø CMP
INV=2105.24
GAS VALVE
W E
S T
V
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IN
IA
S
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P
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PREVIOUS BORROW AREA
PROPOSED TEMPORARY
ACCESS ROAD NO. 2
(STA. 303+50 - STA. 305+14.49 OPTIONAL)
EXISTING
ACCESS ROAD
FROM CO. RT 10/1
GAS
WELL
APPROXIMATE LOCATION OF
ABANDONED EAGLE SEAM DEEP MINE
STABILIZED CONSTRUCTION ENTRANCE
PROPOSED LIMIT OF DISTURBANCE (1.57 AC.)
LEGEND
EXISTING CULVERT
DESCRIPTIONSYMBOL
EXISTING UNPAVED ROAD
EXISTING MINE PORTAL
EXISTING TREELINE/BRUSHLINE
PROPOSED SILT FENCE
PROPERTY LINE
STORMWATER OUTLET
EXISTING INDEX CONTOURS
EXISTING INTERMEDIATE CONTOURS
PROPOSED FLOW DIRECTION
EXISTING FLOW DIRECTION
EXISTING GAS LINE
PROPOSED ACCESS ROAD
EAGLE SEAM DEEP MINE WORKINGS
EAGLE SEAM STRUCTURE CONTOURS2130
EXISTING DITCH
TAX MAP AND PARCEL NUMBER
PROPOSED SEDIMENT
CONTAINMENT BLADDER
LOCATION
PROPOSED TEMPORARY
ROAD CROSSING
Q2 = 112.36 CFS
D50 = 9"
TD = 2'
TW = 40'
NO. 2 GAS SEAM DEEP MINE WORKINGS
APPROXIMATE LOCATION OF
ABANDONED NO.2 GAS SEAM
DEEP MINE (KOPPERSTON NO. 2)
APPROXIMATE LOCATION OF
ABANDONED EAGLE SEAM DEEP MINE
APPROXIMATE LOCATION OF
ABANDONED NO. 2 GAS SEAM
DEEP MINE (KOPPERSTON NO. 2)
PORTALS PREVIOUSLY
RECLAIMED BY OTHERS
TWO (2) TEMPORARY PROPOSED PIPES
TO SEDIMENT CONTAINMENT BLADDER
(SIZE AND TYPE TO BE DETERMINED BY CONTRACTOR)
PROPOSED WET
SEAL (OPTIONAL)
D1
D2
B
B'
A A'
PROPOSED PIPES TO SEDIMENT CONTAINMENT BLADDER
PUBLIC SIGN
LOCATION
D1
D2
D1
D2
PROPOSED
SILT FENCE
(TYP.)
PROPOSED
STABILIZED
CONSTRUCTION
ENTRANCE
NOTES:
1. CONTRACTOR SHALL BE RESPONSIBLE FOR ANY AND ALL PERMIT REQUIREMENTS.
2. CONTRACTOR SHALL BE RESPONSIBLE FOR THE LOCATION AND VERIFICATION OF ANY AND
ALL UTILITIES LOCATED WITHIN THE CONSTRUCTION LIMITS.
3. CONTRACTOR SHALL BE RESPONSIBLE THAT ALL AREAS AFFECTED BY ACCESS AND/OR
CONSTRUCTION SHALL BE REGRADED, SEEDED AND MULCHED UPON COMPLETION OF PROJECT.
4. CONTRACTOR SHALL BE RESPONSIBLE THAT ANY AND ALL PROPERTY CORNERS, (i.e. IRON
RODS, REBARS, CONCRETE MONUMENTS AND SIGNS) DISTURBED SHALL BE RE-ESTABLISHED
AND RESET UPON COMPLETION OF THE PROJECT.
5. SEDIMENT REMOVED FROM DEEP MINE SHALL BE TAKEN OFFSITE TO AN APPROVED LANDFILL.
6. POTENTIAL SOIL BORROW AREAS ARE NOT TO BE CLEARED AND ALL EROSION AND SEDIMENT
CONTROL MEASURES PROVIDED FOR THESE AREAS ARE NOT TO BE INSTALLED UNLESS THEY
ARE UTILIZED DURING CONSTRUCTION ACTIVITIES.
7. THIS PROJECT IS ENCOMPASSED BY A SINGLE PROPERTY OWNER AND ALL PROPERTY LINES
ARE LOCATED OUTSIDE OF THE SHEET BOUNDARY.
8. BASE MAPPING IS A COMBINATION OF FLOWN MAPPING PROVIDED BY THE WVDEP IN 2013 AND
LIDAR FROM THE US GEOLOGICAL SURVEY.
9. THE HORIZONTAL BORE PATH IS APPROXIMATE AND WILL BE FURTHER REFINED BY THE
DRILLING CONTRACTOR.
10. HORIZONTAL DRILLING TO THE EAGLE SEAM FROM THE PROPOSED DRILL PAD IS
APPROXIMATELY 286 FEET HORIZONTALLY AND 14.10 FEET VERTICALLY ABOVE TO THE P-1
PIEZOMETER DRILL HOLE LOCATION (SEE PROFILE B-B').
11. HORIZONTAL DRILLING TO THE EAGLE SEAM FROM THE PROPOSED DRILL PAD IS
APPROXIMATELY 223 FEET HORIZONTALLY AND 14.87 FEET VERTICALLY ABOVE TO THE P-2A
PIEZOMETER DRILL HOLE LOCATION (SEE PROFILE I-I').
12. THE NOAA RAINFALL STATION KOPW2 (KOPPERSTON) LOCATED IN WYOMING COUNTY, WV,
SHALL BE UTILIZED TO MONITOR RAINFALL ACCUMULATION ON THE PROJECT SITE. THIS
STATION WILL SERVE AS THE REFERENCE FOR DETERMINING RAINFALL EVENTS THAT EXCEED
0.25 INCHES IN 24 HOURS, WHICH WILL TRIGGER THE REQUIRED INSPECTIONS OF E&S
CONTROLS AS PER PROJECT SPECIFICATIONS AND REGULATORY/PERMIT REQUIREMENTS.
EXISTING GAS RISER/
METER HOUSE
TM-24
P-25
D1
D2
CP# NORTHING EASTING ELEVATION DESCRIPTION
SURVEY CONTROL
1 291652.91 1824284.86 2120.34 REBAR WITH CAP
2 291864.09 1824529.06 2124.65 REBAR WITH CAP
ABANDON
PIEZOMETER
N: 291188.2516 E: 1824384.8843
BOTTOM OF
VOID EL. 2134.10
GAS
RISER
GAS WELL
PIEZOMETER LOCATION
SURVEY CONTROL POINT
P-1
CONSTRUCTION LIMITS
EXISTING DRAINAGE
PROPOSED CULVERT
PROPOSED SEDIMENT CONTAINMENT
BLADDER
EXISTING
2-12" Ø PIPES
EXISTING WATER DISCHARGE POINT
GROUT FILLED FABRIC CHANNEL
D2 P-1
PORTALS PREVIOUSLY
RECLAIMED BY OTHERS
STRUCTURE CONTOURS (EAGLE SEAM)
DRYER TANK
VALVE
WETLAND
MAP "INSET"
SCALE : 1" = 50'
DREWS C
REEK R
D. C O. R
T. 1 0/1
PARKING
LOT
BUILDING
(CHURCH)
SPILL CONTAINMENT BERM
PROPOSED TEMPORARY
STREAM CROSSING
1-18" Ø CMP
PROPOSED TEMPORARY
STREAM CROSSING
3-18" Ø CMP
D2
DRILL PAD - APPROX. EL. 2120
TEMPORARY SIDE HILL FILL
BERM
EXISTING ACCESS ROAD NO. 1
THE PROPOSED STABILIZED CONSTRUCTION ENTRANCE IS LOCATED
APPROXIMATELY 6,810 FEET NORTHEAST FROM THE PROPOSED
CONSTRUCTION LIMITS AT THE EDGE OF PAVEMENT
(DREWS CREEK ROAD CO. RT. 10/1), SEE MAP "INSET".
CONTROL POINT CP 1
TO BE RELOCATED
PROPOSED INDEX CONTOURS
PROPOSED INTERMEDIATE CONTOURS
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"STAGING
AREA"
P-2A
HO
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TO
EAG
LE SEAM
(SEE NO
TE 11)
K'
K'
PROPOSED GROUT FILLED FABRIC CHANNEL
TW = 6' (OPTIONAL)
EXISTING
WETLAND
EXISTING
WETLAND
TM-24
P-25
TM-24
P-25
TM-24
P-25
TM-24
P-25
TM-24
P-25
EXISTING
2-12" Ø PIPES
ABANDON
PIEZOMETER
N: 291262.4240 E: 1824400.4890
BOTTOM OF VOID
EL: 2134.87
"STAGING
AREA"
PROPOSED VEGETATED CHANNEL
PROPOSED DIVERSION CHANNEL NO. 1
STA. 900+00 - 902+97 (SEE SHEET D3)
TW = 6'
D3
PROPOSED RIP-RAP CHANNEL
PROPOSED DIVERSION CHANNEL NO. 1
STA. 902+97 - 903+47.60 (SEE SHEET D3)
TW = 6'
D3
P-2
P-2 N: 291277.6 E: 1824403.0
H O
R
IZO
N
TAL D
R
ILLIN
G
TO
EAG
LE SEAM
(SEE N
O
TE 10)
PROPOSED ROCK CHECK DAM3
D3
PROPOSED DIVERSION CHANNEL NO. 2
STA. 0+00 - 0+65.21 (SEE SHEET D3)
TW = 6'
D3
PROPOSED ROCK CHECK DAM3
D3
PROPOSED TEMPORARY
ROAD CROSSING
Q = 1.64 CFS
D50 = 9"
TD = 1'
TW = 20'
D2
TWO (2) PERMANENT PROPOSED PIPES TO DREWS
CREEK TO SERVE AS PERMANENT WET SEAL
(12" Ø SDR-35 CONVEYANCE PIPE)
TWO (2) PROPOSED HORIZONTAL
BORINGS (SEE SHEET D4)
D4CONCRETE WASHOUT
EXISTING WETLAND
TO N
AOMA
~4 M I
TO
P
RO
JE
CT
S
IT
E
~1 .3
M I
END PAVEMENT
LAT: 37° 48' 55"
LONG: 81° 29' 44"
100+00 100+05 100+10 100+15 100+20 100+25 100+30 100+35 100+40 100+45 100+50 100+55 100+60
EXISTING GROUND
GROUT FILLED FABRIC
CHANNEL
TO EXISTING
STREAM
EXISTING STREAM CHANNEL
D1
INVERT OF EXISTING PIPES 2145.12
CURRENT WATER DISCHARGE LOCATION (FROM SURVEY) EL. 2154.44'
D2
MINE ROOF
BOTTOM EAGLE COAL SEAM
END MINE VOID
MINE
VOID
APPROXIMATE LOCATION
OF PREVIOUS SLOPE ENTRY
APPROXIMATE LOCATION OF PREVIOUS PAD
2% MIN. SLOPE
PROPOSED WET SEAL
ANGLE OF REPOSE
GRAVEL BULKHEAD
3" - 6" NON-CALCAREOUS STONE
6" LAYER OF BEDDING STONE
12" DIA. PERFORATED SDR 35 PVC
(1' C-C SPACING'S)
NOTE: TO BE INSTALLED AT THE DIRECTION OF THE ENGINEER.
BOTTOM EAGLE COAL SEAM
MINE VOID
DIRECTIONAL DRILLING TO EAGLE SEAM
EXISTING GROUND
DRILL ENTRY - APPROXIMATE EL. 2123'
ABANDONED EAGLE SEAM DEEP MINE
APPROXIMATE PROPOSED DRILL PATH
200+00 200+20 200+40 200+60 200+80 201+00 201+20 201+40 201+60 201+80 202+00 202+20 202+40 202+60 202+80 202+97.98
DRILL PATH TO BE DETERMINED
BY DRILLING CONTRACTOR
P -1 P
IE
ZO
M E
TE
R
LO
C
A
TIO
N
MINE VOID
MINE PILLAR
0.
:1
±286'
3.9%
DRILL PAD - APPROXIMATE EL. 2120'
DRILL ENTRY - APPROXIMATE EL. 2134.1'
(N: 291188.2516, E: 1824384.8843)
800+00 800+20 800+40 800+60 800+80 801+00 801+20 801+40 801+60 801+80 802+00 802+20 802+34.77
BOTTOM EAGLE COAL SEAM
DIRECTIONAL DRILLING TO EAGLE SEAM
EXISTING GROUND
DRILL ENTRY - APPROXIMATE EL. 2123'
ABANDONED EAGLE SEAM DEEP MINE
APPROXIMATE PROPOSED DRILL PATH
DRILL PATH TO BE DETERMINED
BY DRILLING CONTRACTOR
P -2A
P
IE
ZO
M
E
TE
R
LO
C A
TIO
N
MINE VOID
0.
:1
±223'
5.3%
DRILL PAD - APPROXIMATE EL. 2120'
DRILL ENTRY - APPROXIMATE EL. 2134.87'
(N: 291262.4240, E: 1824400.4890)
E ng in ee rin g ·
S ur ve yi ng L an d
P la nn in g T es tin g
In sp ec tio n (3
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FI
LE
S
WET SEAL (OPTIONAL)
PROFILE A-A'
SCALE: 1" = 5'
DIRECTIONAL DRILL 1
PROFILE B-B'
SCALE: 1" = 20'
DIRECTIONAL DRILL 2
PROFILE K-K'
SCALE: 1" = 20'
EXISTING GROUND
EXISTING ACCESS ROAD
100+00
.6
.5
100+20
.1
.1
100+40
.0
.0
100+60
.0
.9
100+80
.3
.2
101+00
.6
.5
101+20
.9
.8
101+40
.2
.2
101+60
.4
.4
101+80
.7
.6
102+00
.9
.9
102+20
.1
.1
102+40
.4
.3
102+60
.6
.5
102+80
.8
.8
103+00
.0
.0
103+20
.0
.0
103+40
.0
.0
103+55.66
.2
.1
LO
D
LO
D
IN
TE
R S
E C
TI
O
N P
R O
P O
S E
D A
C C
E S
S R
O A
D N
O . 2
10:1 10:1
PROPOSED ROAD CROSSING 4
D2
300+00
.7
300+20
.7
.7
300+40
.0
.9
300+60
.9
.0
300+80
.3
.0
301+00
.7
.0
301+20
.3
.0
301+40
.0
.0
301+60
.0
.0
301+80
.2
.0
302+00
.8
.0
302+20
.7
.0
302+40
.4
.0
302+60
.2
.0
302+80
.6
.6
303+00
.1
.0
303+20
.2
.2
303+40
.2
.2
303+60
.3
.2
303+80
.0
.0
304+00
.7
.7
304+20
.1
.0
304+40
.1
.1
304+60
.0
.7
304+80
.6
.5
305+00
.5
.4
305+14.49
.9
.8
EXISTING GROUND
PROPOSED GRADE
INTERSECTION EXISTING ACCESS ROAD NO. 1
10:1 10:1
C L.
U N
N A
M E
D T
R
IB
U
TA
R Y
O F
D R
E W
S C
R E
E K
PROPOSED ROAD CROSSING4
D2
TEMPORARY ACCESS ROAD CONSTRUCTION
PROPOSED 18" CMP
PROPOSED PORTAL
CONSTRUCTION AREA
PROPOSED TEMPORARY STREAM CROSSING
0%
20.1%
400+00
.0
400+20
.2
.6
400+40
.1
.0
400+60
.6
.3
400+80
.0
.5
401+00
.5
.7
401+20
.8
.0
401+40
.0
.2
401+60
.0
.4
401+80
.3
.7
402+00
.0
.9
402+20
.7
.0
402+40
.0
.0
1.2% 2:1 2:1
4' 0.0%
EXISTING GROUND
PROPOSED GRADE PROPOSED 18" CMP
B O
TT
O
M E
D . W
E T
S E
A L
D
IT
C H
B O
TT
O
M E
D . W
E T
S E
A L
D
IT
C H
500+00
.7
.5
500+20
.1
.0
500+40
.5
.0
500+60
.8
.0
500+80
.9
.0
501+00
.8
.0
501+20
.0
.3
501+40
.1
501+55.96
.3
E D
. P R
O P
. R D
E D
. P R
O P
. R D
B O
TT
O
M E
D . W
E T
S E
A L
D
IT
C H
B O
TT
O
M E
D . W
E T
S E
A L
D
IT
C H
EXISTING GROUND
PROPOSED GRADE
0.
:1
2:1
PROPOSED 18" CMP
PROPOSED 3-18" CMP
PROPOSED TEMPORARY
STREAM CROSSING
C L.
U N
N A
M E
D T
R
IB
U
TA
R Y
O F
D R
E W
S C
R E
E K
E ng in ee rin g ·
S ur ve yi ng L an d
P la nn in g T es tin g
In sp ec tio n (3
)7
-8 w w w .te rr ad on .c om
P2
W E
S T
V
IR
G
IN
IA
D
E P
A R
TM
E
N T
O F
E N
V
IR
O N
M E
N
TA
L P
R O
TE
C
TI
O
N
O
FF
IC
E
O F
A B
A N
D O
N E
D M
IN
E
L A
N D
S A
N D
R E
C
LA
M A
TI
O
N
D R
E W
S C
R E
E K
D A
N G
E R
O U
S
IM
P O
U N
D M
E N
T R
A
LE
IG
H
C O
U N
TY
, W
E S
T V
IR
G
IN
IA
TE
M
P O
R A
R Y
A C
C E
S S
R O
A D
A N
D P
A D
P R
O
FI
LE
S
D2
D2
EXISTING ACCESS ROAD NO. 1
PROFILE C-C'
STA. 100+00 - 103+55.66
TEMPORARY ACCESS ROAD NO. 2
PROFILE D-D'
STA. 300+00 - 305+14.49
(STA. 303+50 - STA. 305+14.49 OPTIONAL)
PROPOSED CONTAINMENT BLADDER
PAD PROFILE E-E'
STA. 400+00 - 402+52.35
PROPOSED CONTAINMENT BLADDER
PAD PROFILE F-F'
STA. 500+00 - 501+55.96
D2
600+00
.5
600+20
.7
.5
600+40
.8
.1
600+60
.6
.1
600+80
.0
.0
601+00
.2
.0
601+20
.1
EXISTING GROUND
PROPOSED GRADE
1:1 2:1 2:1
4' 2:12:1 2:1
PROPOSED DIVERSION CHANNEL NO. 1
C L.
U N
N A
M E
D T
R
IB
U
TA
R Y
O F
D R
E W
S C
R E
E K
-0.34%
700+00
.7
700+20
.9
.8
700+40
.3
.9
700+60
.9
.9
700+80
.4
.8
701+00
.0
.5
701+20
.0
.5
701+40
.0
.5
701+60
.2
701+79.15
.4
EXISTING GROUND
2:1
4' 2:1
2:1
1:12:1 2:1
PROPOSED TEMPORARY SIDE HILL FILL
C L.
U N
N A
M E
D T
R
IB
U
TA
R Y
O F
D R
E W
S C
R E
E K
PROPOSED GRADE
PROPOSED DIVERSION CHANNEL NO. 1
0%
5%
900+00
.0
.5
900+20
.0
.4
900+40
.0
.3
900+60
.1
.2
900+80
.3
.1
901+00
.7
.0
901+20
.4
.9
901+40
.9
.8
901+60
.0
.7
901+80
.0
.6
902+00
.8
.5
902+20
.9
.4
902+40
.8
.3
902+60
.7
.2
902+80
.9
.1
903+00
.6
.6
903+20
.9
.6
903+40
.3
.6
PROPOSED GRADE
EXISTING GROUND
-0.50% -10.16%
DISCHARGE INTO PROPOSED TEMPORARY 12" CMP
EXISTING 2 - 12" Ø PIPES
(WET SEAL)
PROPOSED ROCK CHECK DAM
PROPOSED ROCK CHECK DAM
0+00
.3
.3
0+20
.0
.0
0+40
.0
.0
0+60
.5
.4
0+80
.2
.1
-5.55% -1.57% -18.80%
DISCHARGE FROM PROPOSED
TEMPORARY 12" CMP
EXISTING GROUND
PROPOSED GRADE
INTERSECTION EXISTING ACCESS ROAD NO. 1
TEMPORARY ROAD CROSSING
E ng in ee rin g ·
S ur ve yi ng L an d
P la nn in g T es tin g
In sp ec tio n (3
)7
-8 w w w .te rr ad on .c om
P3
W E
S T
V
IR
G
IN
IA
D
E P
A R
TM
E
N T
O F
E N
V
IR
O N
M E
N
TA
L P
R O
TE
C
TI
O
N
O
FF
IC
E
O F
A B
A N
D O
N E
D M
IN
E
L A
N D
S A
N D
R E
C
LA
M A
TI
O
N
D R
E W
S C
R E
E K
D A
N G
E R
O U
S
IM
P O
U N
D M
E N
T R
A
LE
IG
H
C O
U N
TY
, W
E S
T V
IR
G
IN
IA
P A
D A
N D
D
IV
E R
S
IO
N C
H A
N N
E L
P R
O
FI
LE
S
D3
PROPOSED CONTAINMENT BLADDER
PAD PROFILE G-G'
STA. 600+00 - 601+32.63
PROPOSED CONTAINMENT BLADDER
PAD PROFILE H-H'
STA. 700+00 - 701+79.15
PROPOSED DIVERSION CHANNEL NO. 1
PROFILE I-I'
STA. 900+00 - 903+47.60
PROPOSED DIVERSION CHANNEL NO. 2
PROFILE J-J'
STA. 0+00 - 0+65.21
D3
STABILIZED CONSTRUCTION ENTRANCE
NOTE:
CERTAIN INSTALLATIONS SHALL WARRANT THE ADDITION OF A 3 IN. THICK "CAP" LAYER OF 1-1/2"
CLEAN STONE, WHEN INSTALLED AT THE LOCATION OF AN EXISTING DRIVEWAY OR VEHICULAR
ACCESS. FOR ALL INSTALLATIONS, CONTRACTOR SHALL BE RESPONSIBLE FOR THE
MAINTENANCE OF SUCH.
*MUST EXTEND FULL WIDTH OF INGRESS
AND EGRESS OPERATION
POSITIVE DRAINAGE TO SEDIMENT
TRAPPING DEVICE
A
A
70 FT.' MIN.
5:1
70 FT. MIN.
F
T.
M
IN
F
T.
M
IN
10FT. MIN.
F
T.
M
IN
12 FT. MIN.*
IN
. M
IN
IN
. M
IN
SECTION A - A
PLAN VIEW
SIDE ELEVATION
22.5°
.5
.5
.5
.5
° 22.5°
WET MINE SEAL OUTLET PIPES
CROSS SECTION, TYP.
WET MINE SEAL CROSS-OVER PIPE
CROSS SECTION, TYP.
WET MINE SEAL CROSS-OVER PIPE
LONGITUDINAL VIEW, TYP.
WET MINE SEAL PIPE DETAILS, TYP.
WET MINE SEAL OUTLET PIPES
LONGITUDINAL VIEW, TYP.
12" PVC PIPE ANIMAL GUARD
CROSS SECTION, TYP.
S
TO
N E
B U
LK
H
E A
D
PROFILE VIEW, TYP.
ROOF
PAVEMENT
WET MINE SEAL DETAIL
ROOF
PAVEMENT
END VIEW, TYP.
COLLAPSED OR
OPEN ENTRYWAY
EXTEND PIPES INTO
ENTRYWAY AS FAR
AS PRACTICAL
6.0 FT.
MIN.
MINE SEAL
OUTLET PIPES 14 FT.
@ SLOPE=-2.0% MIN.
END
PERFORATIONS
1.0 FT. INSIDE
STONE BULKHEAD
MINE SEAL
CONVEYANCE PIPES
LENGTH VARIES,
SLOPE = -2.0% MIN.
RECEIVING DITCH/SPLASH PAD
2 EACH 12 IN. SDR35
SOLID PVC PIPES,
PROVIDE 1.0 FT. MIN.
OUTFALL AND ANIMAL GUARD
EXTEND DITCH LINING 1.0
FT. MIN. ABOVE TOP OF
PIPES
MINIMUM 2 FT. OF BACKFILL
ABOVE MINE ROOF OR
APPROVED BY WVDEP
APPROXIMATE HIGHWALL
EXCAVATION LIMITS
EXISTING
GRADE
3 IN. TO 6 IN.
NON-CALCAREOUS STONE
MINE BULKHEAD
NOTES:
1. THE TWO (2) JOINTS (28.0 FEET) OF MINE SEAL OUTLET PIPES SHALL
BE INCLUDED IN THE UNIT PRICE BID FOR "WET MINE SEALS".
2. THE MINE SEAL CONVEYANCE PIPE LENGTHS VARY AND SHALL BE
INCLUDED IN THE UNIT PRICE BID FOR "MINE SEAL CONVEYANCE
PIPES".
WET MINE SEAL OUTLET PIPES
28 FT. MIN. @ SLOPE = -2.0% MIN.
EDGE
HIGHWALL
EXTEND PIPES INTO
ENTRYWAY AS FAR AS
PRACTICAL
MINE SEAL CONVEYANCE PIPES
LENGTH VARIES, SLOPE = -2.0% MIN.
2 EA. 12 IN. DIA.
SDR35 SOLID PVC
PIPES
2 EA. 12 IN. DIA.
SDR35 PERF. PVC
PIPES
BULKHEAD, NON-CALCAREOUS 3 IN. TO 6
IN. STONE PLACED SO THAT NO VOIDS
EXIST BETWEEN THE PAVEMENT, RIBS,
ROOF, AND BULKHEAD.APPROXIMATE LIMITS
OF EXCAVATION
12 IN. DIA. SDR35 PERF. PVC
CROSS-OVER PIPE
3 TO 6 FT. .
EQUIDISTANT
EQUIDISTANT
ENTRY
RIB
ENTRY
RIB
C O
LL
A
P S
E D
O R
O P
E N
E N
TR
Y
W A
Y
EDGE
HIGHWALL
1 IN. DIA. HOLES, TYP.,
STAGGER ADJACENT
ROWS
12 IN. DIA. SDR35 PVC
PERFORATED PIPE
1.0 FT.
1.0 FT. TYP.1.0 FT. TYP.
PLAN VIEW, TOP OF
BULKHEAD ELEVATION
1 IN. DIA. HOLES TYP.
STAGGER ADJACENT
ROWS1.0 FT. TYP.
1.0 FT. TYP.
CROSSOVER PIPE = 1.0 FT.
TO 4.0 FT.
1.0 FT.
PROVIDE 4 EACH 1
IN. DIA. HOLES
SPACED AS
SHOWN, STAGGER
ADJACENT ROWS
12 IN. DIA. SDR35 PVC
PERFORATED PIPE
90°' 90
90°'
PROVIDE 6 EACH 1 IN. DIA.
HOLES SPACED AS SHOWN
12 IN. DIA. SDR35 PVC
PERFORATED PIPE
NOTE:
1. ANIMAL GUARDS SHALL BE
INSTALLED THE SAME DAY AS
THE PIPE IS INSTALLED.
3/8 IN. STAINLESS STEEL
BOLTS, NUTS, AND
WASHERS, TYP.
12 IN. DIA.
SDR35
PVC PIPE
3 IN.
3 IN.
3 IN.
3 IN.
TWIN 12 IN. DIA. PERFORATED PIPES
VARIES
6 IN. MIN.
STONE FOR BEDDING
V A
R
IE
S
NO SCALE
PUBLIC NOTICE SIGN
For Info on NPDES Storm Water Permit
DEP 601 57th Street, SE, Charleston WV 25304
WV DEPARTMENT OF ENVIRONMENTAL PROTECTION
Application date: XX/XX/XX
1.6" BLACK
0.8" BLACK
SIGN SIZE SHALL BE AT LEAST 24" x 24" &
WHITE
BACKGROUND
LETTERS (TYP.)
LETTERS (TYP.)
POSTED AT LEAST 36" ABOVE GROUND.
To comment on Sediment Control Plan:
Call: 800-654-5227
OR
DEP.comments@wv.gov
Drews Creek Dangerous Impoundment
WVR112781
1:1
N.T.S.
2:1 FILL SLOPE
24"
24"
ACCESS ROAD / PAD
TOP OF
BERM
SPILL CONTAINMENT BERM DETAIL
E ng in ee rin g ·
S ur ve yi ng L an d
P la nn in g T es tin g
In sp ec tio n (3
)7
-8 w w w .te rr ad on .c om
D1
W E
S T
V
IR
G
IN
IA
D
E P
A R
TM
E
N T
O F
E N
V
IR
O N
M E
N
TA
L P
R O
TE
C
TI
O
N
O
FF
IC
E
O F
A B
A N
D O
N E
D M
IN
E
L A
N D
S A
N D
R E
C
LA
M A
TI
O
N
D R
E W
S C
R E
E K
D A
N G
E R
O U
S
IM
P O
U N
D M
E N
T R
A
LE
IG
H
C O
U N
TY
, W
E S
T V
IR
G
IN
IA
M
IS
C E
LL
A
N E
O U
S D
E
TA
IL
S
SLOPE = 10H:1V
SLOPE = 10H:1V
SLOPE VARIES SLOPE VARIES
SLOPE VARIES SLOPE VARIES
FL
O
W
PLAN VIEW
A
SLOPE = 10H:1V
SLOPE = 10H:1V
SLOPE = 10H:1VSLOPE = 10H:1V
CROSS SECTION A-A
SLO
PE VAR
IES SL
O
PE
V
AR
IE
S
ROAD WIDTH
SLOPE = 10H:1V
SLOPE = 10H:1V SLOPE = 10H:1V
SLOPE = 10H:1V
SL
O
PE
V
AR
IE
S SLO
PE VAR
IES
ROAD CROSSING
NOTES:
1. LENGTH AND WIDTH OF TRAVEL AREA OF
CROSSING SHALL BE CAPPED WITH A
SUFFICIENT LAYER OF NO.1 STONE.
"TW" = TOP WIDTH
"Fb" = FREEBOARD DEPTH
"F.D." = FLOW DEPTH
"t" = THICKNESS
D50 DESIGN RIPRAP
"FD"
1.5' FT.
MATCH ROAD GRADE
EXISTING
GRADE
PLACE SUFFICIENT NO. 1 STONE, TO
THE SATISFACTION OF THE WVDEP, TO
PROVIDE A SMOOTH TRAVELED WAY
MATCH ROAD GRADE
10 FT. MIN. OR AS APPROVED
BY WVDEP, SLOPE
TRANSITION AREA
ROAD WIDTH
10 FT. MIN. OR AS APPROVED
BY WVDEP, SLOPE
TRANSITION AREA
A
ROAD WIDTH
10 FT. MIN. OR AS APPROVED
BY WVDEP, SLOPE
TRANSITION AREA
EXISTING OR
PROPOSED DRAINAGE
D50 DESIGN RIPRAPD50 DESIGN RIPRAP
LIMITS OF NO. 1
CLEAN CAP STONE
ROCK RIP-RAP SIZING
50% 6 IN. - 9 IN. 9 IN. - 13.5 IN. 12 IN. - 18 IN.
35% 3 IN. - 6 IN. 4.5 IN. - 9 IN. 6 IN. - 12 IN.
15% <= 3 IN. 2.25 IN. - 4.5 IN. 3 IN.- 6 IN.
GRADATION D50 = 6 IN. D50 = 9 IN. D50 = 12 IN.
UPSTREAM ANCHOR TRENCH
(FLOW)
1.50 FT.
2.00'
BACKFILL ANCHOR TRENCH
WITH GROUT
DOWNSTREAM ANCHOR TRENCH
(FLOW)
2.00 FT.
1.50 FT.
OVERLAP ANCHOR DETAIL
1.50 FT.
5.00 FT.
2.00 FT.
ANCHOR TRENCH
BACKFILLED WITH GROUT
PROFILE VIEW
CONCEPTUAL VIEW
(FLOW)
(FLOW)
FABRIC FORMED "VEE" CHANNEL
GROUT FILLED FABRIC CHANNEL
FABRIC FORMED
CHANNEL LINING
ANCHOR TRENCH
MORTAR/GROUT FILLED FABRIC
FORMED CHANNEL LINING
GENERAL NOTES:
1. CIRCLED NUMBERS INDICATE SEQUENCE OF MORTAR/GROUT INJECTIONS.
2. INJECT MORTAR/GROUT THROUGH THE UPPER LAYER OF THE FABRIC AT 8 FT. TO 10 FT. ON CENTER.
3. LOCATE TOP EDGE OF FABRIC FORM AT LEAST 2 FT. ABOVE ANTICIPATED FLOW DEPTHS.
4. LOCATE LOWER EDGE OF FABRIC FORM AT LEAST 2 FT. BELOW DISCHARGE POINT OR TO STABLE SLOPE (ANCHOR TRENCH) .
ANCHOR TRENCH
FABRIC FORMED
CHANNEL LINING
2H:1V 2H:1V
0.5
FT. M
IN
0.5 "TW" 0.5 "TW"
"TW"
FINAL GRADE TYP.
"T D
FABRIC FORMED CHANNEL LINING
ANCHOR TRENCH
BACKFILL ANCHOR TRENCH
WITH GROUT
2.00 FT.
TW=TOTAL WIDTH
TD=TOTAL DEPTH
TEMPORARY ACCESS ROAD CONSTRUCTION
SLOPE IN COMPACTED
FILL OR NATURAL
GROUND
0.33
SLOPE IN
COMPETENT ROCK
SLOPE IN
COMPACTED
FILL
2H:1V 2H:1V
SLOPE=1/2"/FT.
SLOPED SECTION
NOTES:
1. ROADWAY SURFACE MAY BE SLOPED TO EITHER SIDE AS TOPOGRAPHY AND CONDITIONS WARRANT.
2. 1-1/2 IN. CRUSHER RUN STONE SHALL BE COMPACTED AS APPROVED BY THE WVDEP.
3. PRIOR TO STONE PLACEMENT, GRADE SUITABLE SUB-GRADE INTO "SLOPE TO DITCH" CONFIGURATION AS DIRECTED BY THE WVDEP. REMOVE, REFILL, AND
COMPACT SOFT SPOTS AS DIRECTED BY THE WVDEP. ALL CUT/FILL SLOPES SHALL BE 2H:1V.
FINISHED
GRADE
FINISHED
GRADE
FINISHED
GRADE
SUITABLE BASE
EXISTING
GRADE
EXISTING
GRADE
1.5 FT
MIN. TYP. 3IN. MIN.
1-1/2 IN. CRUSHER
RUN STONE
3 IN. MIN.
1/2 IN. CRUSHER
RUN STONE
VARIES
COMPACTED FILL
(6 IN. LIFTS)
SLOPE=1/2"/FT.
DITCH AS APPROVED
BY WVDEP
IN
IN
. TRENCH
FRONT ELEVATION
IN
IN
IN
IN
4 IN.
10 FT. TO TOE
OF SLOPE
FABRIC TO BE 24 IN. ABOVE
GROUND WITH "J" IN
TRENCH
FLOW
4 IN.x8 IN.
Trench
SIDE VIEW
REPAIR DETAIL
ATTACHING TWO SILT FENCES
WHEN TRENCHING IS USED
PLACE THE END POST
OF ONE FENCE INSIDE
THE END POST OF THE
OTHER FENCE
ROTATE BOTH POST AT
LEAST 160° IN A
CLOCKWISE DIRECTION
TO CREATE A TIGHT
SEAL WITH THE FABRIC
MATERIAL
DIRECTION OF
RUNOFF WATER DRIVE BOTH POSTS
ABOUT 12 IN. INTO THE
GROUND AND BURY THE
FLAP IN A TRENCH
PLAN VIEW
STAPLES OR WIRE TIES
TO BE PLACED AT EACH
SUPPORT BAND.
(5 BANDS TOTAL)
MEDIUM DUTY WOVEN BELTED
WBSF-6 SILT FENCE STANDARD
POST (OAK)
TOE IN AND
COMPACT BACKFILL
5 STAPLES
(1 IN.X1-3/4 IN.)
BOTTOM OF
TRENCH LINE
GROUND LINE
(1-1/8 IN.X1-1/8 IN.X48 IN.)
(OR EQUAL DENSITY)
36 IN. SILT-SAVER
WBSF-6
4 FT. LONG WOOD (OAK)
OR STEEL POST SPACED
AT 6 FT. MAX
10 FT. MIN. OR AS APPROVED
BY WVDEP, SLOPE
TRANSITION AREA
EXISTING OR
PROPOSED DRAINAGE
TEMPORARY STREAM CROSSING
SLOPE
EXISTING GROUND/
STREAM BED
VARIES
VARIES
NUMBER, SIZE AND
MATERIAL OF PIPES VARIES.
SEE PLAN.
3 IN.-6 IN. STONE
BACKFILL
VARIES
D
NUMBER, SIZE AND
MATERIAL OF PIPES
VARIES. SEE PLAN.
SLOPE
V A
R
IE
S (A
S R
E Q
U
IR
E D
VARIES
STREAM WIDTH
3 IN.-6 IN. STONE
BACKFILL
1/2 D
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1 2
4 5
VEGETATED "VEE" CHANNEL
NOTE 2 DETAIL
NOTE 4 DETAIL
BLANKET
MID-POINT
NOTE 7 DETAIL
NOTES:
1. PREPARE SOIL BEFORE INSTALLING BLANKETS INCLUDING ANY NECESSARY APPLICATION OF LIME FERTILIZER AND SEED.
2. BEGIN AT THE UPSTREAM END THE CHANNEL BY ANCHORING THE BLANKET IN A 6 IN. DEEP X 6 IN. WIDE TRENCH WITH APPROXIMATELY 12 IN. OF BLANKET EXTENDED BEYOND THE UP-SLOPE PORTION OF THE TRENCH. ANCHOR THE BLANKET WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12 IN. APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SOIL AND FOLD REMAINING 12 IN. PORTION OF BLANKET BACK OVER SEED AND COMPACTED SOIL. SECURE BLANKET OVER COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY 12 IN. ACROSS THE WIDTH
OF THE BLANKET.
3. ROLL CENTER BLANKET IN DIRECTION OF WATER FLOW IN BOTTOM OF CHANNEL. BLANKETS WILL UNROLL WITH APPROPRIATE SIDE AGAINST THE SOIL SURFACE. ALL BLANKETS MUST BE SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES IN
APPROPRIATE LOCATIONS AS SHOWN IN THE STAPLE PATTERN GUIDE.
4. PLACE CONSECUTIVE BLANKETS END OVER END (SHINGLE STYLE) WITH A 4 IN.-6 IN. OVERLAP. USE A DOUBLE ROW OF STAPLES
STAGGERED 4 IN. APART AND 4 IN. ON CENTER TO SECURE BLANKETS.
5. FULL LENGTH EDGE OF BLANKETS AT TOP OF SIDE SLOPES MUST BE ANCHORED WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12 IN. APART IN A 6 IN. DEEP X 6 IN. WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
6. ADJACENT BLANKETS MUST BE OVERLAPPED APPROXIMATELY 2 IN.-5 IN. (DEPENDING ON BLANKET TYPE) AND STAPLED.
7. IN HIGH FLOW CHANNEL APPLICATIONS A STAPLE CHECK SLOT IS RECOMMENDED AT 30 FT. TO 40 FT. INTERVALS. USE A DOUBLE ROW OF STAPLES STAGGERED 4 IN. APART AND 4 IN. ON CENTER OVER ENTIRE WIDTH OF THE CHANNEL.
8. THE DOWNSTREAM END OF THE CHANNEL BLANKET MUST BE ANCHORED WITH A ROW OF STAPLES/STAKES APPROXIMATELY 12 IN.
APART IN A 6 IN. DEEP X 6 IN. WIDE TRENCH. BACKFILL AND COMPACT THE TRENCH AFTER STAPLING.
9. IN LOOSE SOIL CONDITIONS THE USE OF STAPLE OR STAKE LENGTHS GREATER THAN 6 IN. MAY BE REQUIRED TO PROPERLY ANCHOR
THE BLANKET.
10. HORIZONTAL STAPLE SPACING SHOULD BE ALTERED IF NECESSARY TO ALLOW STAPLES TO SECURE THE CRITICAL POINTS ALONG THE
CHANNEL SURFACE.
11. PERMANENT SEED MIXTURE IN ACCORDANCE WITH THE SPECIFICATIONS SHALL BE USED FOR VEGETATED CHANNELS.
12. THE EXCAVATED CHANNEL SHALL BE FREE OF LARGE ROCKS OR ORGANIC DEBRIS PRIOR TO PLACEMENT OF EROSION CONTROL
BLANKETS. EROSION CONTROL BLANKETS SHALL ALSO BE FREE OF WRINKLES OR FOLDS.
"TW" = TOP WIDTH
"TD" = TOTAL DEPTH
"FB" = FREEBOARD DEPTH
"FD" = FLOW DEPTH
2H:1V2H:1V
EROSION CONTROL MATTING
WITH VEGETATION LINING (SEE
SPECS)
0.5
FT.
MIN
"FD" FT.
"FB" = 0.3 FT. MIN.
"TD" = FD + Fb MIN.
1/2 TW FT. 1/2 TW FT.
"TW" FT.
FINISHED GRADE
TYP.
NOTE 10
DETAIL CRITICAL POINTS
A. OVERLAPS AND SEAMS
B. PROJECTED WATER LINE
C. CHANNEL BOTTOM/SIDE
SLOPE VERTICES
C B
A
CHANNEL SIDE
SLOPE BLANKET
OVERLAP
IF REQUIRED
2 IN.-5 IN.
NOTE 5 DETAIL NOTE 8 DETAIL
NOTE 6 DETAIL
TOP ANCHOR
TRENCH
6 IN.
6 IN.
DOWNSTREAM
END OF
CHANNEL
BLANKET END
OVERLAP
4 IN.-6 IN.
6 IN.
6 IN.
12 IN.
UPSTREAM END
OF CHANNEL
STAPLES
4 IN.
4 IN.
SOIL BACKFILLSOIL BACKFILL
RIP-RAP LINED CHANNEL
ROCK RIP-RAP SIZING
2H:1V2H:1V
90° TYP.
SOIL BACKFILL
t=1.5XD50 t=1.5XD50t=1.5XD50 t=1.5XD50
D50 SIZE ROCK
RIP-RAP
"F.D." FT.
"F.b." = 0.5 FT., MIN.SOIL BACKFILL
EXISTING GRADE
FINAL GRADE
MINIMUM EXCAVATION LIMITS
"TW" FT.
1/2 "TW" FT. 1/2 "TW" FT.
0.7XD50 0.7XD50
NOTES:
1. PLACE ROCK RIP-RAP FULL WIDTH OF EXCAVATION LIMITS TO
THE DESIGNED FLOW DEPTH (FD)
"TW" = TOP WIDTH
"Fb" = FREEBOARD DEPTH
"F.D." = FLOW DEPTH
"t" = THICKNESS
50% 6 IN. - 9 IN. 9 IN. - 13.5 IN. 12 IN. - 18 IN.
35% 3 IN. - 6 IN. 4.5 IN. - 9 IN. 6 IN. - 12 IN.
15% <= 3 IN. 2.25 IN. - 4.5 IN. 3 IN.- 6 IN.
GRADATION D50 = 6 IN. D50 = 9 IN. D50 = 12 IN.
SLOPE = 2H:1V
SLOPE = 2H:1V
FLOW
PROFILE VIEW
CROSS SECTION VIEW
CHECK DAM SPACING
ALONG PROFILE
ROCK CHECK DAM
NOTES:
1. "X" DIMENSION AS DETAILED BY THE SPECIFICATIONS, FOR SEDIMENT CONTROL THE MAXIMUM HEIGHT OF THE ROCK CHECK DAM IS 3 FT. HOWEVER, ROCK CHECK DAMS CAN BE CONSTRUCTED IN SMALLER DITCHES.
THE CENTER OF THE ROCK CHECK DAM SHALL BE 6 IN. LOWER THAN THE OUTER EDGES AS SHOWN.
2. ROCK CHECK DAMS ARE NORMALLY INSTALLED IN EXISTING DRAINS AND THE TOP CROSS SECTION OF THE DAM SHOULD HAVE A LEVEL CENTER SECTION THE SAME WIDTH AS THE EXISTING CHANNEL BOTTOM AND 6 IN. LOWER THAN THE OUTER EDGES OF THE DAM. ROCK CHECK DAMS PLACED IN PROJECT CONSTRUCTED FLAT-BOTTOM DITCHES SHALL HAVE SIMILAR DIMENSIONS.
3. THE CENTER OF ROCK CHECK DAMS CONSTRUCTED IN PROJECT CONSTRUCTED "VEE" SHAPED OR EXISTING "VEE" SHAPED DITCHES SHALL BE 6 IN. LOWER THAN AND SLOPED TO THE OUTER TOP EDGES OF THE
DITCH SO HIGH FLOWS GO OVER THE TOP OF THE DAM AND NOT AROUND THE EDGES.
4. ROCK CHECK DAMS SHALL BE REMOVED AFTER THE FIRST GROWING SEASON.
EXISTING GRADE
3 IN. TO 6 IN.
RIP-RAP
EXISTING GRADE
STREAM BOTTOM
WIDTH
EQUAL TO STREAM
BOTTOM WIDTH
"X"
0.5 FT. MIN.0.5 FT. MIN.
TOP OF BANK OF
EXISTING DRAIN-WAY
TOP OF BANK OF
EXISTING DRAIN-WAYFIELD EXPEDIENT
DRAIN-WAY FLOW-LINE
TOP OF BANK OF
EXISTING DRAIN-WAY
EXISTING GRADE
"X"
3" TO 6"
RIP-RAP
2.0 FT.
MIN.
0.5 FT. MIN.
300 FT. MAX. OR SPACING ALONG DRAIN-WAY
SUCH THAT TOE ELEVATION OF THE IMMEDIATE
UPSTREAM DAM IS EQUAL IN ELEVATION TO THE
TOP OF THE NEXT DOWNSTREAM DAM.
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DESCRIPTION LINING BEG STA END STA
DIVERSION CHANNEL NO. 1 900+00 - 902+97
GL = GRASS LINED CHANNEL
GRR = GROUTED RIPRAP CHANNEL
RECP = ROLLED EROSION CONTROL PRODUCT
"TW"TOTAL
LENGTH
"TD" "BW"
CHANNEL SCHEDULE
RR = RIPRAP CHANNEL
297' (ft.) (ft.) (ft.)
0GL
GFFC = GROUT FILLED FABRIC CHANNEL
1.56.0
EDA = ENERGY DISSAPATION APRON
N/A = NOT APPLICABLE
"t" (in.)
N/A
NOTES:
2. THE COST OF THE ENERGY DISSAPATION APRONS SHALL BE INCLUDED IN THE
UNIT BID PRICE FOR ITEM 7.2, "RIPRAP LINE CHANNEL", AND SHALL INCLUDE
EXCAVATION, PURCHASE AND PLACEMENT OF ROCK AND ALL MATERIALS, LABOR,
EQUIPMENT, AND INCIDENTALS NECESSARY TO COMPLETE THE WORK. NO
ADDITIONAL PAYMENT OR MEASUREMENT WILL BE MADE FOR THIS.
1. IF CHANNEL IS CUT TO BEDROCK, LINING IS REQUIRED ON OUTSIDE SLOPES
ONLY. THE ENTIRE OUTSIDE SLOPE SHALL BE LINED.
REMARKS
DIVERSION CHANNEL NO. 1 902+97 - 903+47.60 50.6' 0RR 1.56.0 N/A RIP-RAP = 9"
WET SEAL DIVERSION CHANNEL (OPTIONAL) 100+03 - 100+21 18' 0GFFC 1.56.0 6
DIVERSION CHANNEL NO. 2 0+00 - 0+65.21 65.21' 0RR 1.56.0 N/A RIP-RAP = 9"
CONCRETE WASHOUT DETAIL
SEDIMENT FILTER BAG
DISCHARGE HOSE SECURED
TO SPOUT
SEWN IN SPOUT
ELEVATION VIEW
PLAN VIEW
SEDIMENT
FILTER BAG
FLOW
DISCHARGE
WATER
DISCHARGE HOSE
SEDIMENT FILTER BAG DETAIL
AGGREGATE, STRAW OR
OTHER LINER
UNDERLAYMENT AS
RECOMMENDED BY
MANUFACTURER
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BORING PIPE CROSS SECTION, TYP.
BORING PIPE LONGITUDINAL VIEW, TYP.
HORIZONTAL BORING PERFORATION DETAIL
HORIZONTAL BORING CASING DETAIL
PERFORATED END CAP
HORIZONTAL BORING PACKER DETAIL
HORIZONTAL BORING GROUTING DETAIL
BORING PIPE CROSS SECTION, TYP.
BORING PIPE LONGITUDINAL VIEW, TYP.
HORIZONTAL BORING PILOT CASING DETAIL
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