HomeMy WebLinkAboutNew Hanover RNG Facility Site Plan RevisionSITE WORK GENERAL NOTES
CONSTRUCTION SEQUENCE
CAPE FEAR PUBLIC UTILITY AUTHORITY STANDARD NOTES
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8 34567 12
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WATER UTILITIESENVIRON
GEOTECH
MISC. UTILITIES
GAS UTILITIESSAN. UTILITIES
MISC. UTILITIES CONT.
8 34567 12
8 34567 12
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8 34567 12
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0
8
5
Su
i
t
e
2
5
0
7
EQ
U
I
P
M
E
N
T
L
A
Y
O
U
T
1"
=
2
0
'
NORTH
KEY NOTE LEGEND
C201
A
C600
A
C600
B C6
0
0
B C6
0
0
REFERENCES
NEW HANOVER RNG FACILITY CONTROL POINT TABLE
POINT #NORTHING EASTING ELEVATION DESCRIPTION
NEW HANOVER RNG FACILITY EARTHWORK VOLUMES
DESCRIPTION CUT (CY)FILL (CY)NET (CY)
TOTAL*6,000 10,500 -4,500
8 34567 12
8 34567 12
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
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DE
S
C
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1
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2
6
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4
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:
SHEET OF
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33
6
-
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6
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2
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5
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5
0
NORTH
1"
=
4
0
'
8
C300
SI
T
E
G
R
A
D
I
N
G
A
N
D
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R
O
S
I
O
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&
S
E
D
I
M
E
N
T
C
O
N
T
R
O
L
P
L
A
N
PROJECT VICINITY MAP
SITE
DRAINAGE NOTES:
NORTH
GRADING NOTES:RNG PAD NOTE:KEY NOTES
COMPOST SOCK NO.SIZE
COMPOST FILTER SOCK
8"2 3 10
11
4 5 6 7 8 91
12 13 14 15 16 17 12"
WATTLE
NEW HANOVER RNG COMPOST SOCK SLOPES - EXISTING CONDITIONS
SOCK NO.SLOPE
(%)
SLOPE
LENGTH (FT)
ALLOWABLE
SLOPE LENGTH (FT)
SLOPE
REMAINING (FT)
SLOPE
REMAINING (%)
NEW HANOVER RNG COMPOST SOCK SLOPES - PROPOSED CONDITIONS
SOCK NO.SLOPE
(%)
SLOPE
LENGTH (FT)
ALLOWABLE
SLOPE LENGTH (FT)
SLOPE
REMAINING (FT)
SLOPE
REMAINING (%)
REFERENCES
NEW HANOVER RNG FACILITY EARTHWORK VOLUMES
DESCRIPTION CUT (CY)FILL (CY)NET (CY)
TOTAL*6,000 10,500 -4,500
NEW HANOVER RNG FACILITY CONTROL POINT TABLE
POINT #NORTHING EASTING ELEVATION DESCRIPTION
8 34567 12
8 34567 12
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
DE
S
C
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1
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2
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4
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2
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2
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2
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4
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:
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:
SHEET OF
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33
6
-
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6
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0
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5
Su
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2
5
0
NORTH
1"
=
4
0
'
9
C301
CU
T
A
N
D
F
I
L
L
P
L
A
N
PROJECT VICINITY MAP
SITE
NORTH
KEY NOTES LEGEND
STORM PROFILE STRUCTURE 1 TO STRUCTURE 5 PROFILE
STORM PROFILE STRUCTURE 1 TO STRUCTURE 2 PROFILE
STORM PROFILE STRUCTURE 2 TO STRUCTURE 3 PROFILE
8 34567 12
8 34567 12
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
DE
S
C
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1
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2
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4
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2
07
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2
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2
0
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4
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Y
:
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:
SHEET OF
DRAWING NO.:
33
6
-
4
0
6
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2
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2
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:
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4
3
0
8
5
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2
5
0
AS
N
O
T
E
D
10
C400
ST
O
R
M
P
R
O
F
I
L
E
S
REFERENCES
8 34567 12
8 34567 12
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
DE
S
C
R
I
P
T
I
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N
DA
T
E
NO
RE
V
I
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I
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N
R
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D
1
07
/
2
6
/
2
0
2
4
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S
C
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M
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D
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2
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:
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Y
:
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D
B
Y
:
PR
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J
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C
T
N
O
:
SHEET OF
DRAWING NO.:
33
6
-
4
0
6
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Y
2
0
2
4
BJ
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27
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2
5
0
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1"
=
4
0
'
11
C500
SI
T
E
U
T
I
L
I
T
Y
P
L
A
N
PROJECT VICINITY MAP
SITE
UTILITY NOTES: (NCAC 15A.02T.0305 / T15A.18C.0904-906)
NORTH
FIRE AND LIFE SAFETY NOTES:
WATER AND SEWER CAPACITY:
UTILITY INFORMATION:
SANITARY SEWER:
KEY NOTES
FIRE SERVICES:
SECTION B-B
SECTION A-A
8 34567 12
8 34567 12
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
DE
S
C
R
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N
DA
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NO
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V
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1
07
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2
6
/
2
0
2
4
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D
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2
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2
6
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2
0
2
4
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:
PR
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C
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N
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:
SHEET OF
DRAWING NO.:
33
6
-
4
0
6
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2
0
2
4
BJ
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27
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2
5
0
1"
=
2
0
'
12
C600
PA
D
S
E
C
T
I
O
N
S
PROPOSED CUT (TYP.)
PROPOSED FILL (TYP.)
SITE ENTRANCE PROFILE
8 34567 12
8 34567 12
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
DE
S
C
R
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P
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1
07
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2
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2
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2
4
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:
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:
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A
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B
Y
:
CH
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B
Y
:
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P
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D
B
Y
:
PR
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C
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N
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:
SHEET OF
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33
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REFERENCE
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C601
13
LEGEND
NORTH
SITE ACCES PLAN
VEHICLE TURNING MOVEMENTS
WB-50 RIGHT IN, RIGHT OUT
VEHICLE TURNING MOVEMENTS
WB-50 RIGHT IN, RIGHT OUT
NORTH
NORTH
WB-50 DETAIL
HEAVY DUTY ASPHALT PAVEMENT SECTION
8 34567 12
8 34567 12
A
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SHEET OF
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33
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C602
14
NORTH
SIGHT DISTANCE TRIANGLES
NORTH
SIGHT DISTANCE TRIANGLES
8 34567 12
8 34567 12
A
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'
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C603
NORTH
NORTH
8 34567 12
8 34567 12
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33
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MAINTENANCE OF TRAFFIC GENERAL NOTES
MA
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A
16
C604
8 34567 12
8 34567 12
A
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SHEET OF
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33
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17
C605
REFERENCES
8 34567 12
8 34567 12
A
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:
SHEET OF
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33
6
-
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0
6
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2
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NORTH
1"
=
4
0
'
18
C700
SI
T
E
L
I
G
H
T
I
N
G
P
L
A
N
KEY NOTES
NEW HANOVER RNG FACILITY - LIGHTING SCHEDULE
NEW HANOVER RNG FACILITY - LIGHTING STATISTICS
LIGHTING NOTES:
SQUARE POLE BASE DETAIL
DETAIL 1
TEMPORARY SEEDING
·
·
·
·
·
DETAIL 2
PERMANENT SEEDING
DETAIL 7
HARDWARE CLOTH AND GRAVEL INLET PROTECTION
N.T.S.
DETAIL 4
DUST CONTROL
N.T.S.
DETAIL 5
SURFACE ROUGHENING
N.T.S.
DETAIL 6
STABILIZED CONSTRUCTION ENTRANCE
N.T.S.
DETAIL 3
MULCHING
N.T.S.
Construction:
1.Clear the entrance and exit area of all vegetation, roots, and other objectionable
material and properly grade it.
2.Place the gravel to the specific grade and dimensions shown on the plans, and
smooth it.
3.Provide drainage to carry water to a sediment trap or other suitable outlet.
4.Use geotextile fabrics in order to improve stability of the foundation in locations
subject to seepage or high water table.
Maintenance:
1.Inspect all measures at least weekly and after each rainfall of 1.0 inch or greater.
Make any required repairs immediately.
2.Maintain the gravel pad in a condition to prevent mud or sediment from leaving the
construction site. This may require periodic topdressing with 2-inch stone.
3.Sediment on roadways is to be removed immediately by broom and shovel, either by
manual or mechanical means, and not to be washed off where it has the potential to
enter a stream, drainage way or storm drain system.
Pub
l
i
c
R
o
a
d
2-3" COURSE AGGREGATE
6" MIN.
AS
R
E
Q
U
I
R
E
D
12'
M
I
N
.
50'
M
I
N
.
IF 5
0
'
C
A
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NORTH CAROLINA
Department of Environmental Quality
GEOTEXTILE FABRIC
TO BE USED IN LOCATIONS
SUBJECT TO SEEPAGE OR
HIGH WATER TABLE.
Effective Date: 9/1/2023
In accordance with the 2013
Design Manual Updates
8 34567 12
8 34567 12
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PLAN
DETAIL 9
BLOCK AND GRAVEL STONE INLET PROTECTION
N.T.S.
DETAIL 10
SILT FENCE
N.T.S.
DETAIL 11
STANDARD CHECK DAM
N.T.S.
DETAIL 12
GRASS LINED CHANNEL
N.T.S.
DETAIL 13
COMPOST SOCK
N.T.S.
DETAIL 8
PIPE OUTLET PROTECTION
N.T.S.
PROPOSED CHANNEL TABLE
CHANNEL
NAME W1 (FT.)MIN. DEPTH
(FT.)W2 (FT.)LENGTH (FT.)BEGIN
INVERT END INVERT SLOPE (FT./FT.)CHANNEL
LINER LOCATION
CHANNEL 1 2.00 2.00 12.00 103.00 20.46 19.95 0.005 SC150 *METER STATION
CHANNEL 2 2.00 2.00 12.00 418.00 19.95 16.00 0.009 SC150 *NORTH-WEST SIDE OF
PAD
CHANNEL 3 35.00 2.00 45.00 172.00 16.00 14.31 0.010 SC150 *NORTH-EAST SIDE OF
PAD
CHANNEL 4 10.00 2.00 20.00 231.00 14.42 13.00 0.006 SC150 *
SOUTH-EAST OF PAD
TO INFILTRATION
BASIN
2:1 SLOPE GRAVEL FILTER
DEWATERING CONCRETE BLOCKS
1' MIN.
2' MAX.
TEMPORARY SEDIMENT POOL WIRE SCREEN DEWATERING
DROP INLET
WITH GRATE
NOTES:
1.Lay one block, on each side of the structure, on its
side in the bottom row to allow pool drainage. The
foundation should be excavated at least 2 inches
below the crest of the storm drain. Place the
bottom row of blocks against the edge of the storm
drain for lateral support and to avoid washouts
when overflow occurs. If needed, give lateral
support to subsequent rows by placing 2 inch x 4
inch wood studs through block openings.
2.Carefully fit hardware cloth or comparable wire
mesh with 1/2-inch openings over all block
openings to hold gravel in place.
3.Use clean gravel 1/2 to 3/4 inch in diameter, placed
2 inches below the top of the block on a 2:1 slope
or flatter and smooth it to an even grade. NCDOT
#57 washed stone is recommended.
SEDIMENT
MAINTENANCE:
1.Inspect all measures at least weekly and after every
rainfall of 1.0 inch or greater; repair immediately.
2.Remove sediment as necessary to provide
adequate storage volume for subsequent rains.
3.When the contributing drainage area has been
adequately stabilized, remove all materials and any
unstable soil, and either salvage or dispose of it
properly. Bring the disturbed area to proper grade,
then smooth and compact before stabilizing.
NORTH CAROLINA
Department of Environmental Quality
Effective Date: 9/1/2023
In accordance with the 2013
Design Manual Updates
Notes:
1.Construct the sediment barrier of standard strength or extra strength synthetic filter fabrics.
2.Ensure that the height of the sediment fence does not exceed 24 inches above the ground. (Higher fences may
impound volumes of water sufficient to cause failure of the structure)
3.Construct the filter fabric from a continuous roll cut to the length of the barrier to avoid joints. When joints are
necessary, securely fasten the filter cloth only at a support post with 4 feet minimum overlap to the next post.
4.Support standard strength filter fabric by wire mesh fastened securely to the upslope side of the posts. Extend the
wire mesh support to the bottom of the trench. Fasten the wire reinforcement, then fabric on the upslope side of the
fence post. Wire or plastic zip ties should have a minimum 50 pound tensile strength.
5.When a wire mesh support fence is used, space posts a maximum of 8 feet apart. Supports should be driven securely
into the ground a minimum of 24 inches. Wire mesh should be a minimum 14-gauge with 6 inch mesh spacing.
6.Extra strength filter fabric with 6 foot post spacing does not require a wire mesh support fence. Securely fasten the
filter fabric directly to posts. Wire or plastic zip ties should have a minimum of 50 pound tensile strength.
7.Excavate the trench approximately 4 inches wide and 8 inches deep along the proposed line of the posts and upslope
from the barrier.
8.Place 12 inches of fabric along the bottom and side of the trench.
9.Backfill the trench with soil placed over the filter fabric and compact. Thorough compaction of the backfill is critical to
silt fence performance.
10.Do not attach filter fabric to existing trees.
11.Do not place across ditches, streams, or any other areas of concentrated flow.
Maintenance:
1.Inspect all measures at least weekly and after each rainfall of 1.0
inch or greater. Make any required repairs immediately.
2.Should the fabric of a sediment fence collapse, tear, decompose,
or become ineffective, replace it promptly.
3.Remove sediment deposits as necessary to provide adequate
storage volume for the next rain and reduce pressure on the
fence. Take care to avoid undermining the fence during cleanouts.
4.Remove all fencing materials and unstable sediment deposits and
bring the area to grade and stabilize it after the contributing
drainage area has been properly stabilized.
STEEL POST
8' MAX. STANDARD STRENGTH FABRIC WITH WIRE FENCE
6' MAX. EXTRA STRENGTH FABRIC WITHOUT WIRE FENCE
18-24"
8" DOWN & 4" FORWARD
ALONG THE TRENCH24"
WIRE FENCE
FILTER FABRIC
PLASTIC OR
WIRE TIES 24"
8" MIN.
4" MIN.
BACKFILL TRENCH
AND COMPACT
THOROUGHLY
UPSLOPE
WIRE FENCE FILTER FABRIC
STEEL POST
PLASTIC OR
WIRE
CROSS SECTION VIEW
Max. Slope Length and Slope for Which
Sediment Fence is Applicable
Slope Slope Length (ft)Max. Area (ft2)
<2%100 10,000
2 to 5%75 7,500
5 to 10%50 5,000
10 to 20%25 2,500
>20%15 1,500
NORTH CAROLINA
Department of Environmental Quality
Effective Date: 9/1/2023
In accordance with the 2013
Design Manual UpdatesSEDIMENT FENCE
T
T
W2
e
e
d
W1
d
d
PARABOLIC CHANNEL CROSS SECTION
TRIANGULAR "V" CHANNEL CROSS SECTION
TRAPEZOIDAL CHANNEL CROSS SECTION
X-Section Area (A) = Zd2
Top Width (T) = 2dz
Z=e
d
X-Section Area (A) =23 Td
Top Width (T) =1.5 A
d
Z=e
d
X-Section Area (A) = W1d + Zd2
Top Width (W2) = W1 + 2dz
NOTES:
1.At a minimum, grass-lined channels should carry peak
runoff from the 10-year storm without eroding. Increase the
capacity according to the potential damage if flood hazard
exists.
2.If design velocity of the channel to be vegetated by seeding
exceeds 2 feet per second, a temporary channel liner is
required.
3.Channel side slopes should be 3:1 or flatter to aid in the
establishment of vegetation and for maintenance. V-shaped
channels along roadways should have side slopes of 6:1 or
flatter for safety.
4.Remove all trees, brush, stumps, and other objectionable
material from the foundation area, and dispose of properly.
5.Excavate the channel, and shape it to neat lines and
dimensions shown on the plans plus a 0.2 foot overcut
around the channel perimeter to allow for bulking during
seedbed preparations and sod buildup.
6.Remove and properly dispose of all excess soil so that the
surface water may enter the channel freely.
7.The procedure used to establish grass in the channel will
depend upon the severity of the conditions and selection of
species. Protect the channel with mulch or a temporary liner
sufficient to withstand anticipated velocities during the
establishment period.
Maintenance:
1.During the establishment period, check grass-lined channels
after every rainfall.
2.After grass is established, periodically check the channel.
check after heavy rainfall events and immediately make any
necessary repairs.
3.Check the channel outlet and all road crossings for bank
stability and evidence of piping or scour holes.
4.Remove all significant sediment accumulations to maintain
the designed carrying capacity.
5.Keep grass in a healthy, vigorous condition at all times.
NORTH CAROLINA
Department of Environmental Quality
Effective Date: 9/1/2023
In accordance with the 2013
Design Manual UpdatesGRASS-LINED CHANNELS
SILT SOCK / WATTLE FOR PERIMETER AND INLET PROTECTION
NOTE:
1.Other materials providing equivalent protection
against erosive velocities may be substituted for
compost use in silt socks or wattles.
2.Fill silt sock/wattle netting uniformly with compost
to the desired length such that logs do not deform.
3.Silt sock/Wattle(s) should be installed parallel to
and a minimum of 10 feet beyond the toe of a
graded slope. Silt Sock/Wattle(s) located below
flat areas should be located at the edge of the
land disturbance. The ends of the silt
sock/wattle(s) should be turned slightly upslope to
prevent runoff from going around the end of the
silt sock/wattle(s).
4.Oak or other durable hardwood stakes with a 2
inch x 2 inch cross section should be driven
vertically plumb, through the center of the silt
sock/wattle. Stakes should be placed at a
maximum interval of 4 feet or a maximum interval
of 8 feet if the silt sock/wattle is placed in a 4 inch
trench.
5.In the event staking is not possible (ie. when
socks/wattles are used on pavement) heavy
concrete blocks shall be used behind the silt
sock/wattle to hold it in place during runoff events.
COMPOST SOCK INITIAL FLOW RATES
Compost Sock
Design Diameter
8 Inch
(200 nm)
12 Inch
(300 nm)
18 Inch
(450 nm)
24 Inch
(600 nm)
32 Inch
(750 nm)
Maximum Slope
Length (<2%)
600 Feet
(183 m)
750 Feet
(229 m)
1,000 Feet
(305 m)
1,300 Feet
(396 m)
1,650 Feet
(500 m)
Hydraulic Flow
Through Rate
7.5 gpm/ft
(94 l/m/m)
11.3 gpm/ft
(141 l/m/m)
15.0 gpm/ft
(188 l/m/m)
22.5 gpm/ft
(281 l/m/m)
30.0 gpm/ft
(374 l/m/m)
MAINTENANCE:
1.Inspect all measures at least weekly and after each
rainfall of 1.0 inch or greater.
2.Remove accumulated sediment and any debris as
needed to allow for adequate flow.
3.Silt sock/Wattle must be replaced if clogged or torn.
4.If ponding becomes excessive, the silt sock/wattle
may need to be replaced with a larger diameter or a
different measure.
5.Reinstall if damaged or dislodged.
6.Silt socks/wattles shall be inspected until land
disturbance is compete and the area above the
measure has been permanently stabilized.
WOOD MULCH OR COMPOST
TO 1/2 HEIGHT OF LOG
4' MAX
.
2" x 2"
STAKES
SILT SOCK/ WATTLE
AREA TO BE
PROTECTED
3"
12" MIN.
FLOW
FL
O
W
SECTION
UNTRENCHED INSTALLATION
TRENCH INTO
GROUND 4" MIN.
8' MAX
.
2" x 2"
STAKES
SILT SOCK/ WATTLE
AREA TO BE
PROTECTED
3"
12" MIN.
FLOW
FL
O
W
SECTION
ENTRENCHED INSTALLATION*
*THIS APPLICATION MAY NOT BE USED WITH COMPOST
SOCKS SMALLER THAN 12".
WORK AREA
AREA TO BE
PROTECTED
SILT SOCK/
WATTLE
MULCH OR COMPOST
FOR UNTRENCHED
SOCKS
ISOMETRIC VIEW
SHEET FLOW
NORTH CAROLINA
Department of Environmental Quality
Effective Date: 9/1/2023
In accordance with the 2013
Design Manual Updates
A BL
L= THE DISTANCE SUCH THAT POINTS A
AND B ARE OF EQUAL ELEVATION
FILTER CLOTH
1.5' MIN.
9" MIN.
12" OF NCDOT #5 OR
#57 WASHED STONE
CLASS B RIPRAP
FILTER CLOTH
PLAN VIEW
CROSS-SECTION VIEW
NOTES:
1.Place stone on a filter fabric foundation.
2.The center stone section must be at least 9 inches below natural
ground level where the dam abuts the channel banks.
3.Extend stone at least 1.5 feet beyond the ditch bank to keep water
from cutting around the ends of the check dam.
4.Set spacing between dams to assure that the elevation at the top of
the lower dam is the same as the toe elevation of the upper dam.
5.Protect the channel after the lowest check dam from heavy flow that
could cause erosion.
6.Make sure the channel reach above the most upstream dam is
stable.
7.Ensure that other areas of the channel, such as culvert entrances
below the check dams, are not subject to damage or blockage from
displaced stones.
8.Riprap and filter fabric should be keyed in to prevent under cutting.
9.Ends of check dams may need to be turned uphill to prevent bypass
and better conform to site conditions.
10.Do not place check dams in intermittent or perennial streams.
MAINTENANCE:
1.Inspect check dams and channels at least weekly and after each rainfall of 1.0
inch or greater. Clean out sediment, straw, limbs or other debris that could clog
the channel when needed.
2.Anticipate submergence and deposition above the check dam and erosion from
high flows around the edges of the dam. Correct all damage immediately. If
significant erosion occurs between dams, additional measures can be taken
such as, installing a protective riprap liner in that portion of the channel.
3.Remove sediment accumulated behind the dams as needed to prevent damage
to channel vegetation, allow the channel to drain through the stone check dam,
and prevent large flows from carrying sediment over the dam. Add stones to the
dams as needed to maintain design height and cross section.
2' MAX AT
CENTER
4'-6'
1.5'
2:
1
NORTH CAROLINA
Department of Environmental Quality
Effective Date: 9/1/2023
In accordance with the 2013
Design Manual UpdatesCHECK DAM
8 34567 12
8 34567 12
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DETAIL 14
PIPE TRENCH TYPICAL DETAIL
N.T.S.
DETAIL 16
TYPICAL RETAINING WALL
N.T.S.
2"
12
"
VARIES
DETAIL 18
RNG/FLARE PAD SURFACING
N.T.S.
DETAIL 19
ALL WEATHER ACCESS ROAD SECTION
N.T.S.
12
"
2"
PROPOSED CULVERT TABLE
CULVERT ID.DIA
(IN.)
LENGTH
(FT.)
INLET
ELEVATION
(FT.)
OUTLET
ELEVATION
(FT.)
SLOPE
(FT./FT.)MATERIAL LOCATION
2 -3 18.00 163.00 18.30 17.48 0.010 HDPE
STRUCTURE 3
TO STRUCTURE
2
1 -2 24.00 321.00 17.48 15.08 0.010 HDPE
STRUCTURE 2
TO STRUCTURE
1
4 -5 18.00 107.00 18.30 17.77 0.005 HDPE
STRUCTURE 5
TO STRUCTURE
4
1 -4 24.00 64.00 17.77 17.29 0.010 HDPE
STRUCTURE 4
TO STRUCTURE
1
0 -1 24.00 66.00 15.08 14.42 0.010 HDPE STRUCTURE 1
TO CHANNEL 4
DC-1 15.00 42.00 15.82 14.99 0.020 HDPE ENTRANCE
APRON
DETAIL 17
DANDY SACK INLET PROTECTION
N.T.S.
6"
DETAIL 15
DROP INLET
N.T.S.
SECTION X-X SECTION Y-Y
PLAN DOWEL
PROPOSED STRUCTURES
STRUCTURE SIZE (IN.)RIM ELEV.
(FT.)DEPTH (FT.)INV. IN (FT.)INV. OUT
(FT.)GRATE TYPE
1 36 X 24 20.55 5.97 17.29 &
15.08 15.08 STD. 840.16
FRAME & GATE
2 36 X 24 20.55 3.57 17.48 17.48 STD. 840.16
FRAME & GATE
3 36 X 24 20.55 2.75 N/A 18.30 STD. 840.16
FRAME & GATE
4 36 X 24 20.55 3.28 17.77 17.77 STD. 840.16
FRAME & GATE
5 36 X 24 20.55 2.75 N/A 18.30 STD. 840.16
FRAME & GATE
SECTION G-G
PLAN OF GRATING
PLAN OF FRAM
SECTION F-FSECTION E-E
SECTION H-H
8 34567 12
8 34567 12
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DETAIL 19
INFILTRATION BASIN
N.T.S.
DETAIL 20
INFILTRATION BASIN SPILLWAY
N.T.S.
DETAIL 22
WATTLE CHECK
N.T.S.
DETAIL 21
STRUCTURAL CANTILEVER SLIDE GATE
AND KNOX BOX
N.T.S.
Spacing Between Socks / Wattles (Feet)
Channel Slope (%)8-inch Diameter Sock 12-inch Diameter Sock
1 67 100
2 33 50
3 22 33
4 17 25
NOTES:5 13 20
1.Other materials providing equivalent protection against erosive velocities may be substituted for
compost use in silt socks or wattles.
2.Fill silt sock/wattle netting uniformly to the desired length such that logs do not deform.
3.Use 24 inch long wooden stakes with a 2 inch x 2 inch nominal cross section.
4.Install silt sock/wattle(s) to a height on slope so flow will not wash around silt sock/wattle and
scour slopes, or as directed.
5.Install a minimum of two up-slope stakes and four down-slope stakes at an angle to wedge silt
sock/wattle to ground at bottom ditch. Use staples to secure silt sock/wattle to the ground to
prevent undermining.
6.The use of flocculants such as Polyacrylamide (PAM) is recommended. Apply flocculants on top
of sock/wattle and to matting on either side of sock/wattle according to manufacturer
recommended rates. Reapply after each 1.0 inch rainfall.
MAINTENANCE:
1.Inspect all measures weekly and after each rainfall of 1.0 inch or greater. Remove accumulated
sediment and any debris.
2.Silt sock/Wattle(s) must be replaced if clogged or torn.
3.If ponding becomes excessive, the silt sock/wattle may need to be replaced with a larger diameter
or a different measure.
4.Reinstall if damaged or dislodged.
5.Silt socks/Wattles shall be inspected until land disturbance is compete and the area above the
measure is permanently stabilized.
MATTING
STAKES ANGLE STAKES
TO WEDGE WATTLE
ONTO GROUND
DATE:PAGE:
NORTH CAROLINA
Department of Environmental Quality
Effective Date: 9/1/2023
In accordance with the 2013
Design Manual UpdatesSILT SOCK / WATTLE FOR CHECK DAM
TRAPEZOIDAL DITCH SECTION VIEW
MATTING
MIN. 2 STAKES ON UPSLOPE MIN. 4 STAKES ON DOWNSLOPE
V-DITCH SECTION VIEW
MATTING
MIN. 2 STAKES ON UPSLOPE MIN. 4 STAKES ON DOWNSLOPE
MATTING
WA
T
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WA
T
T
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MIN. 4 STAKES ON
DOWNSLOPE
MIN. 2 STAKES
ON UPLSOPE
DITCH SLOPE
FLOW
FLOW
SILT SOCK/
WATTLE
PLAN VIEW
ISOMETRIC VIEW
MATTING
DOWNSLOPE
TOP OF BANK
PLAN VIEW
GATE OPERATOR FOUNDATION DETAIL
SECTION A-A
PLAN
ELEVATION
SINGLE MOTORIZED STEEL CANTILEVERED SLIDE GATE
POST TOP
EXTERNAL ROLLERS (TYP.)
1.90" O.D. VERTICAL
BRACE (TYP.)
KNOX BOX
8 34567 12
8 34567 12
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SHEET OF
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3'
-
0
"
(
T
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P
.
)
10'-0" (MAX.)10'-0" (MAX.)10'-0" (MAX.)
4'-0" WIDE DOOR TO BE
PLACED EVERY 250'10'-0" (MAX.)10'-0" (MAX.)
C/L TO C/L OF GATE POSTS
24'-0" WIDE DOUBLE SWING GATES
7'
-
0
"
WI
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F
A
B
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6'
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"
3" CLR. - GRADE TO
TOP OF CONCRETE
FINISHED GRADE
3" CLR. GRADE TO
BOTTOM OF FABRIC
CHAIN LINK FABRIC FENCE ELEVATION
TYPICAL TOP POST FITTING
4 POINT BARBED WIRE
TOP GATE HINGE
PLAN
BOTTOM GATE HINGE FITTINGS FOR CENTER
OF DOUBLE GATE
GATE FORK
TYPICAL GATE FITTINGS WIRE & POST BANDS
WIRE STRETCHING BAND
PLAN OF BANDS
END OR GATE POST BAND
POST WIRE TIES
WIRE TIES
TOP OR BRACE RAIL
WIRE TIES
GATE KEEPER
(HOLDS GATE OPEN)
TRUSS ROAD & BAND
1.INSTALLATION:FENCE ADDITION SHALL BE PLUMB AND TRUE TO LINE, CHAIN LINK FABRIC SHALL BE TAUT AND PROPERLY SECURED, CORNER BRACES
AND DIAGONAL BRACES SHALL BE PROPERLY PLACED TO PREVENT SAGGING. THE COMPLETE INSTALLATION SHALL BE INSTALLED BY
SKILLED AND EXPERIENCES FENCE ERECTORS, IN A WORKMANLIKE MANNER, IN ACCORDANCE WITH GOOD CONSTRUCTION PRACTICE
AND IN ACCORDANCE WITH ALL LOCAL APPLICABLE CODES.
2.MATERIAL:SPECIFICATIONS FOR HOT-DIP GALVANIZED FENCE CHAIN LINK FABRIC - THE CHAIN LINK FABRIC SHALL BE IN ACCORDANCE WITH ASTM
A-392 SPECIFICATIONS AND SHALL BE HOT DIPPED GALVANIZED AFTER WEAVING, HAVING A COATING WEIGHT OF 2 OUNCES OF ZINC PER
SQUARE FOOT, MINIMUM, OF UNCOATED WIRE SURFACE (CLASS II). FABRIC SHALL BE NO. 9 GAUGE WIRE WOVEN IN A 2-INCH CHAIN LINK
DIAMOND MESH. THE FABRIC SHALL BE FASTENED TO THE LINE POST BY MEAN OF NO. 6 GAUGE ALUMINUM WIRE CLIPS SPACED 12
INCHES ON CENTER. IT SHALL BE ATTACHED TO TOP RAIL WITH NO. 9 GAUGE ALUMINUM TIE WIRES SPACED 24 INCHES ON CENTER.
FABRIC SHALL BE ATTACHED TO TERMINAL POST BY MEANS OF A 1/4” X 3/4” TENSION BAR WITH HEAVY GAUGE PRESSED STEEL BAND OR
CLIPS SPACED APPROXIMATELY 14 INCHES ON CENTER. BARBED WIRE - BARBED WIRE TO BE OF 4 POINT PATTERN, COMPOSED OF THREE
STRANDS OF NO. 11- 1/2 GAUGE GALVANIZED WIRE WITH LARGE ALUMINUM BARBS SPACED APPROXIMATELY 4” TO 5” INCHES ON CENTER.
BOTTOM TENSION WIRE - NO. 7 GAUGE GALVANIZED COIL SPRING TENSION WIRE WITH CLASS I COATING. WIRE TO BE FASTENED TO CHAIN
LINK FABRIC WITH NO. 11 GAUGE HOG RINGS ON 18 INCH CENTERS.
POST AND OTHER APPURTENANCES - ALL POST AND OTHER APPURTENANCES SHALL BE HOT-DIP GALVANIZED WITH A MINIMUM ZINC
COATING OF 2.0 OUNCES PER SQUARE FOOT OF SURFACE (CLASS II COATING ASTM A-392).
LINE POST - LINE POST SHALL BE 2 1/4” “H” COLUMN WEIGHING 4.1 LBS. PER FOOT, MINIMUM CARBON CONTENT .35%, MINIMUM TENSILE
STRENGTH 75,000 PSI OR 2 3/8” O.D. SCHEDULED 40 PIPE, OF SUFFICIENT LENGTH TO ALLOW FOR INSTALLATION TO A DEPTH OF 3'-0
BELOW GROUND LEVEL. THE POSTS SHALL BE SPACED IN THE LINE OF FENCE, NO FURTHER THAN 10'-0”.
TERMINAL POST - ALL END, CORNER AND PULL POSTS SHALL BE 2 7/8” O.D. SCHEDULE 40 PIPE OR 2 1/2” X 2 1/2” X .1875” WALL THICKNESS
SQUARE TUBING.
GATE POST - GATE POST SHALL BE OF THE FOLLOWING SIZE FOR SINGLE SWING GATES OR ONE LEAF OF DOUBLE GATE.
UP TO 6' WIDE
OVER 6' TO 13'2-1/2” SQ.NOM. WT. SAME AS TERMINAL POST
OR 2-7/8” O.D.
OVER 13' TO 18'4” O.D.NOM. WT.9.11 LB. /FT.
OVER 18'6-5/8” O.D.NOM. WT.18.97 LB. /FT.
8-5/8” O.D.NOM. WT.24.70 LB. /FT.
EACH POST SHALL BE OF SUFFICIENT LENGTH TO ALLOW FOR INSTALLATION TO A DEPTH OF 3'-0” BELOW GROUND LEVEL.
LINE POST AND TERMINAL POST ANCHORAGE - ALL POST SHALL BE SET IN CYLINDRICAL CONCRETE FOUNDATIONS WITH TOP OF FINISH CONCRETE SURFACE 3 INCHES ABOVE
FINISH GRADE. EXCAVATION SHALL BE 3'-6” DEEP AND NOT LESS THAN EIGHT INCHES (8”) IN DIAMETER FOR ALL LINE POSTS, AND NOT LESS THAN TWELVE INCHES (12”) IN
DIAMETER FOR TERMINAL AND GATE POSTS. CONCRETE SHALL MEET ACI-318 SPECIFICATIONS FOR 3000 PSI-28 DAY STRENGTH CONCRETE.
TOP RAIL - THE FENCE SHALL HAVE A CONTINUOUS TOP RAIL FOR ITS FULL LENGTH OF STANDARD GALVANIZED PIPE, 1-5/8” O.D. THE TOP RAIL SHALL PASS THROUGH
OPENINGS PROVIDED FOR THAT PURPOSE IN THE POST TOPS AND EACH LENGTH SHALL BE COUPLED WITH A SLEEVE COUPLING, WITH EXPANSIONS COUPLING EVERY FIFTH
JOINT.
BRACES - TRUSS BRACES OF STANDARD GALVANIZED 1-5/8” O.D. PIPE 2.71 LB. /FT., WITH A 3/8” O.D. TRUSS ROD AND TURNBUCKLES ATTACHMENT SHALL BE INSTALLED
BETWEEN EACH END OR GATE POST AND THE ADJACENT LINE POST. TWO TRUSS BRACES SHALL BE FURNISHED ON CORNER OR PULL POSTS.
FITTING - ALL FITTINGS USED IN THE COMPLETE FENCE ASSEMBLY SHALL BE OF MALLEABLE, CAST IRON OR PRESSED STEEL AND SHALL BE HOT-DIP GALVANIZED AFTER
FABRICATION.
EXTENSION ARMS - LINE POST SHALL BE EQUIPPED WITH EXTENSION ARMS TO WITHSTAND A MINIMUM PULL-DOWN WEIGHT OF 450 LBS. FROM END OF ARM. ARMS TO BE
DESIGNED TO EXTEND AT A 45 DEGREE ANGLE WITH LOCKING DEVICE TO SECURELY FASTEN THREE STRANDS OF BARBED WIRE EQUALLY SPACED WITH THE TOP STRAND
LOCATED 12 INCHES ABOVE FABRIC AND 12 INCHES OUT FROM FENCE LINE.
POST TOPS - ALL END, CORNER, PULL AND GATE POST SHALL BE EQUIPPED WITH TOPS. TUBULAR POST TOPS TO BE SO DESIGNED AS TO EXCLUDE MOISTURE FROM THE POST.
ALL LINE POST TOPS DESIGNED TO HOLD THE TOP RAIL AND THE EXTENSION ARM FOR THREE STRANDS OF BARBED WIRE.
GATES - GATE FRAMES SHALL BE MADE OF 2” X 2” X .110” W.T. SQUARE STEEL TUBING OR 1.9 INCH O.D. SCHEDULE 40, 2.72 LB./FT. STANDARD WEIGHT PIPE, HOT-DIP
GALVANIZED, FRAMES TO BE JOINED AT CORNERS TO FORM A RIGID PANEL AND SHALL BE FILLED WITH CHAIN LINK FABRIC OF SAME GAUGE AS USED ON THE FENCE.
FABRIC SHALL BE FASTENED IN THE FRAME ON ALL FOUR SIDES BY MEANS OF TENSION BARS AND CLIPS. THREE STRANDS OF BARBED WIRE SHALL BE FASTENED TO THE
EXTENDED FRAMES OF GATE. EACH FRAME TO BE EQUIPPED WITH 3/8” DIAMETER ADJUSTABLE TRUSS ROD, HINGES. POSITIVE TYPE LATCHING DEVICE WITH PROVISIONS FOR
PADLOCKING.
ALL DRIVE GATES TO BE PROVIDED WITH POSITIVE TYPE LATCHING DEVICE WITH PROVISIONS FOR PADLOCKING. DRIVE GATES SHALL ALSO HAVE CENTER PLUNGER ROD,
CATCH AND SEMI-AUTOMATIC OUTER CATCHES TO SECURE GATES IN OPEN POSITION.
ALL MAN EGRESS GATES SHALL BE SECURE FROM OUTSIDE INTRUDERS WITH PANIC BAR WHICH ALLOW FOR FREE EXIT IN AN EMERGENCY.
4'
3 STRAND
BARBED WIRE
1-5/8" O.D. SCH. 40
GALVANIZED HEADER
7'
-
6
"
M
I
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.
C
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E
A
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A
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E
42
"
M
I
N
.
1-1/2"
12"
MIN.
6" MIN.
ADDED SECURITY MEASURES
TO KEEP LATCH FROM BEING
OPENED FROM THE OUTSIDE.
PANIC RELEASE
BAR WITH SINGLE
PIN LATCH
CONCRETE FOOTING REFER
TO SECURITY FENCE DETAIL
FOR REQUIREMENTS
FINISHED GRADE
SLOPE TO DRAIN (TYP.)
TENSION BAR
(TYP 4 SIDES)
TENSION BAR BANDS/
CLIPS @ 1' O.C.
1/8" GALVANIZED SHEET METAL
WELDED TO INSIDE OF GATE FRAME
FOR RELEASE BAR MOUNTING
1-5/8" O.D. SCH. 40
GALVANIZED GATE FRAME
EXIT SIGN
2-7/8" O.D. SCH. 40
GALVANIZED GATE POST
2" MESH CHAIN LINK FABRIC 9 GA.
(GALVANIZED FENCE)
HINGE PINS PLACED SO THAT THEY CAN BE
ADJUSTED FROM INSIDE PAD ONLY (TYP)
SECURITY FENCE DOOR DETAIL
DETAIL 23
CHAIN LINK FENCE
NOT TO SCALE
8 34567 12
8 34567 12
A
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SHEET OF
DRAWING NO.:
33
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DETAIL 26
ANTI SEEP COLLAR
N.T.S.
PAVED AREA UNPAVED AREA
DETAIL 28
VALVE
N.T.S.
SIDE VIEW
TOP VIEW
DETAIL 29
TAPPING SLEEVE AND VALVE ASSEMBLY
N.T.S.
DETAIL 27
SMALL VALVE BOX
N.T.S.
FRONT VIEW
SIDE VIEW
WARNING SIGN DETAIL
DETAIL 24
TREE PROTECTION DURING CONSTRUCTION
N.T.S.
DETAIL 25
TREE PROTECTION DURING CONSTRUCTION
N.T.S.
ELEVATION
SIDE ELEVATION
8 34567 12
8 34567 12
A
B
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F
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GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE
WITH THE NCG01 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCG01 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the delegated
authority having jurisdiction. All details and specifications shown on this sheet may not apply
depending on site conditions and the delegated authority having jurisdiction.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1.Select flocculants that are appropriate for the soils being exposed during construction,
selecting from the NC DWR List of Approved PAMS/Flocculants.
2.Apply flocculants at or before the inlets to Erosion and Sediment Control Measures.
3.Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMS/Flocculants and in accordance with the manufacturer's instructions.
4.Provide ponding area for containment of treated Stormwater before discharging offsite.
5.Store flocculants in leak-proof containers that are kept under storm-resistant cover or
surrounded by secondary containment structures.
HAZARDOUS AND TOXIC WASTE
1.Create designated hazardous waste collection areas on-site.
2.Place hazardous waste containers under cover or in secondary containment.
3.Do not store hazardous chemicals, drums or bagged materials directly on the ground.
EQUIPMENT AND VEHICLE MAINTENANCE
1.Maintain vehicles and equipment to prevent discharge of fluids.
2.Provide drip pans under any stored equipment.
3.Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4.Collect all spent fluids, store in separate containers and properly dispose as hazardous
waste (recycle when possible).
5.Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6.Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products to
a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1.Never bury or burn waste. Place litter and debris in approved waste containers.
2.Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) on site to contain construction and domestic wastes.
3.Locate waste containers at least 50 feet away from storm drain inlets and surface waters
unless no other alternatives are reasonably available.
4.Locate waste containers on areas that do not receive substantial amounts of runoff from
upland areas and does not drain directly to a storm drain, stream or wetland.
5.Cover waste containers at the end of each workday and before storm events or provide
secondary containment. Repair or replace damaged waste containers.
6.Anchor all lightweight items in waste containers during times of high winds.
7.Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8.Dispose waste off-site at an approved disposal facility.
9.On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1.Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2.Locate paint washouts at least 50 feet away from storm drain inlets and surface waters
unless no other alternatives are reasonably available.
3.Contain liquid wastes in a controlled area.
4.Containment must be labeled, sized and placed appropriately for the needs of site.
5.Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1.Install portable toilets on level ground, at least 50 feet away from storm drains, streams
or wetlands unless there is no alternative reasonably available. If 50 foot offset is not
attainable, provide relocation of portable toilet behind silt fence or place on a gravel pad
and surround with sand bags.
2.Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3.Monitor portable toilets for leaking and properly dispose of any leaked material. Utilize a
licensed sanitary waste hauler to remove leaking portable toilets and replace with
properly operating unit.
HERBICIDES, PESTICIDES AND RODENTICIDES
1.Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2.Store herbicides, pesticides and rodenticides in their original containers with the label,
which lists directions for use, ingredients and first aid steps in case of accidental
poisoning.
3.Do not store herbicides, pesticides and rodenticides in areas where flooding is possible
or where they may spill or leak into wells, stormwater drains, ground water or surface
water. If a spill occurs, clean area immediately.
4.Do not stockpile these materials onsite.
CONCRETE WASHOUTS
1.Do not discharge concrete or cement slurry from the site.
2.Dispose of, or recycle settled, hardened concrete residue in accordance with local and
state solid waste regulations and at an approved facility.
3.Manage washout from mortar mixers in accordance with the above item and in addition
place the mixer and associated materials on impervious barrier and within lot perimeter
silt fence.
4.Install temporary concrete washouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for review
and approval. If local standard details are not available, use one of the two types of
temporary concrete washouts provided on this detail.
5.Do not use concrete washouts for dewatering or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must be
pumped out and removed from project.
6.Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum, install
protection of storm drain inlet(s) closest to the washout which could receive spills or
overflow.
7.Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
8.Install at least one sign directing concrete trucks to the washout within the project limits.
Post signage on the washout itself to identify this location.
9.Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags or other temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
10. At the completion of the concrete work, remove remaining leavings and dispose of in an
approved disposal facility. Fill pit, if applicable, and stabilize any disturbance caused by
removal of washout.
EARTHEN STOCKPILE MANAGEMENT
1.Show stockpile locations on plans. Locate earthen-material stockpile areas at least 50
feet away from storm drain inlets, sediment basins, perimeter sediment controls and
surface waters unless it can be shown no other alternatives are reasonably available.
2.Protect stockpile with silt fence installed along toe of slope with a minimum offset of five
feet from the toe of stockpile.
3.Provide stable stone access point when feasible.
4.Stabilize stockpile within the timeframes provided on this sheet and in accordance with
the approved plan and any additional requirements. Soil stabilization is defined as
vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
A
BELOW GRADE WASHOUT STRUCTURE
1:1
SIDE SLOPE
(TYP.)
10 MIL
PLASTIC
LINING
3'-0"
MIN.
& X'
MAX.
SECTION A-A
NOT TO SCALE
ABOVE GRADE WASHOUT STRUCTURE
NOT TO SCALE
SECTION B-B
HIGH
COHESIVE &
LOW FILTRATION
SOIL BERM
8"
6"
2'
HIGH
COHESIVE &
LOW FILTRATION
1:1 SIDE SOIL BERM
SLOPE
(TYP.)
10 MIL
PLASTIC LINING
B
B
3'-0" MIN.&
X' MAX.
A
SANDBAGS (TYP.)
OR STAPLES
SANDBAGS (TYP.)
OR STAPLES
SANDBAGS (TYP.)
OR STAPLES
SANDBAGS (TYP.)
OR STAPLES
NOTES:
1. ACTUAL LOCATION DETERMINED
IN FIELD
2. THE CONCRETE WASHOUT
STRUCTURES SHALL BE
MAINTAINED WHEN THE LIQUID
AND/OR SOLID REACHES 75% OF
THE STRUCTURES CAPACITY.
3.CONCRETE WASHOUT
STRUCTURE NEEDS TO BE CLEARY
MARKED WITH SIGNAGE NOTING
DEVICE.
NOTES:
1. ACTUAL LOCATION DETERMINED
IN FIELD
2. THE CONCRETE WASHOUT
STRUCTURES SHALL BE MAINTAINED
WHEN THE LIQUID AND/OR SOLID
REACHES 75% OF THE STRUCTURES
CAPACITY TO PROVIDE ADEQUATE
HOLDING CAPACITY WITH A MINIMUM
12 INCHES OF FREEBOARD.
3.CONCRETE WASHOUT STRUCTURE
NEEDS TO BE CLEARY MARKED WITH
SIGNAGE NOTING DEVICE.
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
CONCRETE
WASHOUT
CLEARLY MARKED
SIGNAGE
NOTING DEVICE
(18"X24" MIN.)
SILT
FENCE
10' MIN
10' MIN
SECTION E: GROUND STABILIZATION
Required Ground Stabilization Timeframes
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case longer than 90 calendar days after the last land disturbing activity.
Temporary ground stabilization shall be maintained in a manner to render the surface stable
against accelerated erosion until permanent ground stabilization is achieved.
Site Area Description Timeframe variations
-7 days for perimeter dikes, swales, ditches,
perimeter slopes and HQW Zones
-10 days for Falls Lake Watershed unless
there is zero slope
Stabilize within
this many calendar
days after ceasing
land disturbance
7
7
7
14
None
None
(a)Perimeter dikes,
swales, ditches, and
perimeter slopes
(b)High Quality Water
(HQW) Zones
(c)Slopes steeper
than 3:1
If slopes are 10 feet or less in length and
are not steeper than 2:1, 14 days are
allowed
(d)Slopes 3:1 to 4:1
(e)Areas with slopes
flatter than 4:1 14
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
Temporary Stabilization Permanent Stabilization
·Temporary grass seed covered with straw or
other mulches and tackifiers.
·Hydroseeding
·Rolled erosion control products with or
without temporary grass seed
·Appropriately applied straw or other mulch
·Plastic sheeting
·Permanent grass seed covered with straw
or other mulches and tackifiers
·Geotextile fabrics such as permanent soil
reinforcement matting
·Hydroseeding
·Shrubs or other permanent plantings
covered with mulch
·Uniform and evenly distributed ground cover
sufficient to restrain erosion
·Structural methods such as concrete,
asphalt or retaining walls
·Rolled erosion control products with grass
seed
NCG-01 GROUND COVER & MATERIALS HANDLING
Date:Page:
EFFECTIVE DATE: 11/12/2020
PART III
SELF-INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF-INSPECTION
Self-inspections are required during normal business hours in accordance with the table
below. When adverse weather or site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self-inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
PART III
SELF-INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1.E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date throughout the coverage under this permit. The
following items pertaining to the E&SC plan shall be kept on site and available for inspection at
all times during normal business hours.
2.Additional Documentation to be Kept on Site
In addition to the E&SC plan documents above, the following items shall be kept on the
site and available for inspectors at all times during normal business hours, unless the
Division provides a site-specific exemption based on unique site conditions that make
this requirement not practical:
(a)This General Permit as well as the Certificate of Coverage, after it is received.
(b)Records of inspections made during the previous twelve months. The permittee shall
record the required observations on the Inspection Record Form provided by the Division
or a similar inspection form that includes all the required elements. Use of
electronically-available records in lieu of the required paper copies will be allowed if
shown to provide equal access and utility as the hard-copy records.
PART III
SELF-INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1.Occurrences that Must be Reported
Permittees shall report the following occurrences:
(a)Visible sediment deposition in a stream or wetland.
(b)Oil spills if:
·They are 25 gallons or more,
·They are less than 25 gallons but cannot be cleaned up within 24 hours,
·They cause sheen on surface waters (regardless of volume), or
·They are within 100 feet of surface waters (regardless of volume).
(c)Releases of hazardous substances in excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(d)Anticipated bypasses and unanticipated bypasses.
(e)Noncompliance with the conditions of this permit that may endanger health or the
environment.
2.Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact the
appropriate Division regional office within the timeframes and in accordance with the other
requirements listed below. Occurrences outside normal business hours may also be reported
to the Department's Environmental Emergency Center personnel at (800) 858-0368.
3.Documentation to be Retained for Three Years
All data used to complete the e-NOI and all inspection records shall be maintained for a period
of three years after project completion and made available upon request. [40 CFR 122.41]
PART II, SECTION G, ITEM (4)
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT
Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water from the surface when these devices need to be drawn down for maintenance or close out unless this is infeasible. The circumstances in which it is not
feasible to withdraw water from the surface shall be rare (for example, times with extended cold weather). Non-surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met:
(a)The E&SC plan authority has been provided with documentation of the non-surface withdrawal and the specific time periods or conditions in which it will occur. The non-surface withdrawal shall not commence until the E&SC plan authority has approved these items,
(b)The non-surface withdrawal has been reported as an anticipated bypass in accordance with Part III, Section C, Item (2)(c) and (d) of this permit,
(c)Dewatering discharges are treated with controls to minimize discharges of pollutants from stormwater that is removed from the sediment basin. Examples of appropriate controls include properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
(d)Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dewatering treatment devices described in Item (c) above,
(e)Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and
(f)Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of in a manner that does not cause deposition of sediment into waters of the United States.
Item to Document Document Requirements
(a)Each E&SC measure has been installed and
does not significantly deviate from the locations,
dimensions and relative elevations shown on the
approved E&SC plan.
Initial and date each E&SC measure on a copy of
the approved E&SC plan or complete, date and
sign an inspection report that lists each E&SC
measure shown on the approved E&SC plan. This
documentation is required upon the initial
installation of the E&SC measures are modified
after initial installation.
(b)A phase of grading has been completed.Initial and date a copy of the approved E&SC plan
or complete, date and sign an inspection report to
indicate completion of the construction phase.
(c)Ground cover is located and installed in
accordance with the approved E&SC plan.
Initial and date a copy of the approved E&SC plan
or complete, date and sign an inspection report to
indicate compliance with approved ground cover
specifications.
(d)The maintenance and repair requirements for
all E&SC measures have been performed.
Complete, date and sign an inspection report.
(e)Corrective actions have been taken to E&SC
measures.
Initial and date a copy of the approved E&SC plan
or complete, date and sign an inspection report to
indicate the completion of the corrective action.
Inspect
(1)Rain gauge
maintained in
good working
order
Frequency
(during normal
business hours)
Daily
Inspection records must include:
(2)E&SC
Measures
At least once per 7
calendar days and
within 24 hours of
a rain event ≥ 1.0
inch in 24 hours.
(3)Stormwater
discharge
outfalls(SDOs)
At least once per 7
calendar days and
within 24 hours of
a rain event ≥ 1.0
inch in 24 hours.
(4)Perimeter
of Site
At least once per 7
calendar days and
within 24 hours of
a rain event ≥ 1.0
inch in 24 hours.
(5)Streams or
wetlands
onsite or
offsite (where
accessible)
(6)Ground
Stabilization
Measures
At least once per 7
calendar days and
within 24 hours of
a rain event ≥ 1.0
inch in 24 hours.
After each phase
of grading.
1.Identification of the measures inspected
2.Date and Time of the inspection
3.Name of the person performing the inspection
4.Indication of whether the measures were operating properly
5.Description of maintenance needs for the measure
6.Description, Evidence, and date of corrective actions taken
Daily rainfall amounts.
If no daily rain gauge observations are made during weekend
on holiday periods, and no individual-day rainfall information is
available, record the cumulative rain measurement for those
unattended days (this will determine if a site inspection is
needed). Days on which no rainfall occurred shall be recorded
as "Zero." The permittee may use another rain-monitoring
device approved by the Division.
1.Identification of the discharge outfalls inspected
2.Date and Time of the inspection
3.Name of the person performing the inspection
4.Evidence of indicators of stormwater pollution such as oil
sheen, floating or suspended solids or discoloration
5.Indication of visible sediment leaving the site
6.Description, Evidence, and date corrective actions taken
If visible Sedimentation is found outside site limits, then record
of the following shall be made:
1)Actions taken to clean up or stabilize sediment that has left
the site limits
2)Description, Evidence and date of corrective actions taken
3)An explanation as to the actions taken to control future
releases
If the stream or wetland has increased visible sedimentation or
has visible increased turbidity from the construction activity, then
a record of the following shall be made:
1)Description, Evidence and date of corrective actions taken
2)Records of required reports to the appropriate Division
Regional Office per Part III, Section C, Item(2)(a) of this permit
1.The phase of grading (installation of perimeter E&SC
measures, clearing and grubbing, installation of storm
drainage facilities, completion of all land-disturbing activity,
construction or redevelopment, permanent ground cover).
2.Documentation that the required ground stabilization
measures have been provided within the required timeframe
or assurance that they will be provided as soon as possible.
NCG-01 SELF INSPECTION
Date:
Page:
EFFECTIVE DATE:11/12/2020
Occurrence
(a) Visible
sediment
deposition in a
stream or wetland
Reporting Timeframe (After Discovery) and Other Requirements
• Within 24 hours, an oral or electronic notification.
• Within 7 Calendar Days, a report that contains a description of the
sediment and actions taken to address the cause of the deposition.
Division staff may waive the requirement for a written report on a case-
by-case basis.
• If the stream is named on the NC 303(d) list as impaired for sediment-
related caused, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure
compliance with the federal or state impaired-waters conditions.
(b) Oil spills and
release of
hazardous
substances per
item 1(b)-(c) above
(c) Anticipated
bypasses [40 CFR
122.41(m)(3)]
(d) Unanticipated
bypasses [40 CFR
122.41(m)(3)]
(e) Noncompliance
with the conditions
of this permit that
may endanger
health or the
environment [40
CFR 122.41(I)(7)]
• Within 24 Hours, an oral or electronic notification. The notification shall
include information about the date, time, nature, volume and location
of the spill or release.
• A report at least ten days before the date of the bypass, if possible.
The report shall include an evaluation of the anticipated quality and
effect of the bypass.
• Within 24 Hours, an oral or electronic notification
• Within 7 calendar days, a report that includes an evaluation of the
quality and effect of the bypass.
• Within 24 Hours, an oral or electronic notification
• Within 7 calendar days, a report that contains a description of the
noncompliance, and its causes; the period of noncompliance, including
exact dates and times, and if the noncompliance has not been
corrected, the anticipated time noncompliance is expected to continue;
and steps taken or planned to reduce, eliminate and prevent
reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
• Division staff may waive the requirement for a written report on a case-
by-case basis.
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