20071505 Ver 5_McElrath Culvert Removal_Revised Fig 3 5-5-17_20170510

Culvert Removal - Tributaries to Little
Willow Creek
Henderson County, North Carolina
for
McElrath Carolina Investments, LLC
Vicinity Map
Not to Scale
0
BEFORE YOU DIG!
CALL 1-800-632-4949
N.C. ONE -CALL CENTER
IT'S THE LAW!
60% PLANS
ISSUED 4/5/2017
Sheet Index
Title Sheet 0.1
Legend and Notes 0.2
Overview / ESC 1.0
Plan & Profile 1.1-1.3
Details 2.1-2.2
Project Directory
Engineering/Surveying: Owner:
Wildlands Engineering, Inc McElrath Carolina Investments,
167-B Haywood Road LLC
Asheville, NC 28806
Jacob McLean, PE
828-774-5447
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General Construction and Erosion Control Notes
1. THE EXACT ALIGNMENTS SHALL BE BASED ON FIELD
CONDITIONS AND IS GENERALLY A STRAIGHT-LINE FOLLOWING
THE EXISTING PIPES.
2. SOME STONE MAY BE GENERATED ON-SITE FOR USE IN RIFFLES
(UP TO 30%) AND ADDITIONAL STONE WILL BE BROUGHT IN
FROM QUARRY FOR RIFFLE CONSTRUCTION. ON-SITE STONE
SHALL BE GENERALLY FREE OF SILT, CLAY AND FINES.
3. EROSION CONTROL MEASURES WILL BE INSTALLED AND
MAINTAINED DURING ALL PHASES OF WORK AND WILL BE
REMOVED UPON COMPLETION. INSTALL ALL EROSION
CONTROL FOR PRELIMINARY ACTIVITIES PRIOR TO BEGINNING
WORK.
4. ALL DISTRUBED AREAS WILL BE SEEDED WITH TEMPORARY AND
PERMANENT SEED.
5. THE CONTRACTOR WILL RETURN PUBLIC AND PRIVATE
PROPERTY TO ITS PREEXISTING CONDITION, TO INCLUDE BUT
NOT LIMITED TO ROADS, UTILITIES, VEGETATION NOT
SPECIFIED TO BE ALTERED IN PLANS, AND FENCING, AND IS
FINANCIALLY RESPONSIBLE TO CONDUCT ANY AND ALL
NECESSARY REPAIRS TO THIS END.
6. APPLY EROSION CONTROL MATTING TO ALL SLOPES STEEPER
THAN 3:1.
7. PERMANENT STABILIZATION MUST BE ACHIEVED WITHIN 14
DAYS AFTER COMPLETION OF ANY PHASE OF WORK.
8. INSPECT EROSION CONTROL AFTER ALL RAIN EVENTS AND
REPAIR/MAINTAIN MEASURES IMMEDIATELY.
9. THE ENGINEER OR OWNER MAY STOP WORK AT ANY TIME DUE
TO FAILURE TO ADEQUATELY INSTALL AND MAINTAIN EROSION
CONTROL MEASURES.
Ground Stabilization Requirements per NCG01
Site Area Description
Stabilization Time
Stabilization Time Frame
Frame
Exceptions
Perimeter dikes, swales,
7 days
None
ditches and slopes
High Quality Water
7 days
None
(HQW) Zones
Slopes Steeper than 3:1
7 days
If slopes are 10' or less in length
and are not steeper than 2:1, 14
days are allowed
Slopes flatter than 3:1
14 days
7 days for slopes > than 50' in
length
All other areas with
14 days
None (except for perimeters and
slopes < 4:1
HQW)
Extensions of time may be approved by the permitting authority based on
weather or other site-specific conditions that make compliance impracticable.
Inspection and Record Keeping Requirements per NCG01
Measures shall be inspected once per 7 calendar days and within 24 hours of a rainfall
event of greater than 0.5" per 24 hour period. Corrective actions shall be performed as
soon as possible before the next storm event. Records must be kept on-site and available
for review during construction and must be maintained for 3 years and be available upon
request. A rain gauge must be installed at the site.
Abbreviated Construction Seauence
PRE -MOBILIZATION - SCHEDULE AND ATTEND PRE -CONSTRUCTION MEETING. CONTACT
HENDERSON COUNTY INSPECTIONS TO NOTIFY OF INTENT TO BEGIN CONSTRUCTION AT LEAST 72
HOURS BEFORE MOBILIZATION.
PHASE 1 - MOBILIZATION AND SITE PREP
1. MOBILIZE EQUIPMENT AND MATERIALS TO THE SITE. LOCATE LIMITS OF DISTURBANCE.
ESTABLISH STAGING AREAS, HAUL ROADS, SILT FENCES AND OTHER BMPS. INSTALL RAIN
GAGE AND LOCATION FOR STORING EROSION AND SEDIMENT CONTROL INSPECTION
REPORTS.
2. ALL HAUL ROADS WILL BE MONITORED FOR SEDIMENT LOSS ON A DAILY BASIS. IN THE EVENT
OF SEDIMENT LOSS, SEDIMENT FENCE OR OTHER APPROPRIATE PRACTICE WILL BE INSTALLED.
PHASE 2 - CHANNEL GRADING AND IN -STREAM STRUCTURE INSTALLATION
3. INSTALL PUMP -AROUND FLOW DIVERSION AND DEFINE WORK REACH BASED ON LENGTH OF
DIVERSION HOSES AND LENGTH OF CHANNEL THAT CAN BE STABILIZED BY THE END OF EACH
WORK DAY. PROCEED DOWNSTREAM IN SECTIONS. COMPLETE BANK GRADING AND
IN -STREAM STRUCTURES AND ENSURE THAT CHANNEL BED AND BANKS ARE FULLY
STABILIZED BEFORE REMOVING FLOW DIVERSION AND MOVING TO THE NEXT DOWNSTREAM
REACH.
4. WITH FLOW DIVERTED, HARVEST COBBLE AND GRAVEL MATERIALS FROM BED OF
DEWATERED CHANNEL FOR RE -USE IN CONSTRUCTED RIFFLES AND OTHER IN -STREAM
STRUCTURES.
PHASE 2A - BIOENGINEERING AND PLANTING
5. TREE AND SHRUB PLANTING AND LIVE STAKING WILL BE COMPLETED AFTER GRADING
OPERATIONS ARE COMPLETE AND DURING THE DORMANT SEASON (GENERALLY BETWEEN
DECEMBER AND APRIL).
PHASE 3 - DEMOBILIZATION
6. UPON COMPLETION OF STREAM AND FLOODPLAIN GRADING OPERATIONS, THE
CONSTRUCTION HAUL ROUTES AND STAGING AREAS WILL BE GRADED, RAKED, SEEDED AND
MULCHED AS NEEDED TO STABILIZE AREAS. ONCE THE SITE IS STABILIZED, SILT FENCES WILL
BE REMOVED.
7. THE CONTRACTOR WILL ENSURE THAT THE SITE IS FREE FROM TRASH AND EXCESS
CONSTRUCTION MATERIALS PRIOR TO DEMOBILIZATION OF EQUIPMENT FROM THE SITE.
8. NOTIFY HENDERSON COUNTY INSPECTOR OF PROJECT COMPLETION.
Existing Features Proposed Features Erosion and Sediment Control Features
Existing Tree �' Proposed Rock Sill Proposed Silt Fence
Existing Pipe _ _ _ _ Proposed Stream Centerline Alignment _—� Proposed Brush Check Dam
Proposed Stream Bankfull Top of Bank \ _
Flow Direction EELLL� Proposed Pump Around System
LLL Proposed Permanent Fill (Seed &Mulch)
L _ _ Old Sediment Basin (Existing) Proposed Staging Area
Proposed Pipe
Access Road / Route
Proposed Construction Entrance
FEMA Cross Section Location (as necessary)
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FEMA Stream q- Survey Notes Proposed Limits of Disturbance N � E
FEMA Regulatory Floodplain SURVEY DATA WAS COLLECTED BY WILDLANDS ENGINEERING ON AN ASSUMED GRID N
USING A LASER LEVEL. EACH OF THE CULVERT SITES WAS SURVEYED ON A O
County GIS Parcels SEPARATE GRID. HORIZONTAL DATA WAS OBTAINED USING NC FLOODPLAIN m
MAPPING PROGRAM (NCFMP) GEOREFERENCED AERIALS, REFERENCED TO NAD83. z m

I / i
WASTE FILL
AREA (TYP)
/ STAGING AREAS /
WITH SILT
FENCE (TYP)
UT1, REMOVE 156
LF 48" HDPE PIPE,
�� � -- REBUILD STREAM
' � AND VALLEY, SEE
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Or
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/ LIMITS O
DISTURBANCE
(TYP), 22,000 SC! FT
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ALT. ACCES
II ROUTE (TYP)
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8
START PAVED
ROAD
NO FILL PLACEMENT WITHIN
100 -YEAR FLOODPLAIN
SNffT1Z
UT2, REMOVE 489 LF— `
PI4VALLEY,
STREAM I I `__,.•,I�
APPLY PUMP AROUND—
DETAIL DURING CULVERT
REMOVAL AND STREAM
WORK (TYP)
100 -YR FLOODPLAIN
Cp
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N RKK6
2010 AERIAL FROM NC FLOODPLAIN MAPPING PROGRAM (NCFMP)
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0' 100' 200' 300' i v
(HORIZONTAL) u
FEMA XS 4311
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FEMA XS 4907 — — —
-JA
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500 -YEAR FLOODPLAIN
(OUTER LINE) - BACKWATER "
FROM FRENCH BROAD RIVER
100 -YR FLOODPLAIN
Cp
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N RKK6
2010 AERIAL FROM NC FLOODPLAIN MAPPING PROGRAM (NCFMP)
E w
0' 100' 200' 300' i v
(HORIZONTAL) u

0+00
95
90
85
80
75
0+00 0+50 1+00 1+50 1+77
RIFFLE LENGTHS ARE 30' PER RIFFLE. DROP IS 1.0' PER RIFFLE. CONSTRUCT RIFFLES USING STONE MIX SPECIFIED IN TYPICAL SECTION.
POOLS ARE 20' LONG PER POOL. SLOPE AT 10:1 FROM TAIL OR RIFFLE TO POOL MAX DEPTH SPECIFIED ON TYPICAL. SLOPE AT 10:1 BACK UP TO HEAD OF NEXT RIFFLE. POOLS ARE
CONSTRUCT BRUSH CHECKDAMS PMM
TO PLUG EXISTING DITCH AND
PREVENT FUTURE EROSION ISSUE
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STAGING
AREA
UT1 TO LITTLE WILLOW CK
REMOVE 155± LF 48" HDPE, CONSTRUCT RIFFLES AND
POOLS ALONG ti, SEE TYPICAL SECTIONS 0+05 TO 1+60
BEGIN STREAM DAYLIGHTING
UT1, 0+05± FILL AREA (SEED AND
STRAW)
TIE-IN WITHIN 5'
UPSTREAM OF CULVERT
SLOPE AND MAT
ERODING BANK, 10-15
LF
LOWER EXISTING BANKFULL BENCH ON LEFT
BANK TO MATCH TYPICAL RIFFLE
DIMENSION, DO NOT DISTURB CHANNEL
END DAYLIGHTING UT1,
1+60±
PUMP
AROUND
1,77
EXISTING FILL HEIGHT ALONG PIPE 4, APPROX. (TO BE
REMOVED PER TYPICAL SECTION)
— —
95
_
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RIFFLES, APPLY
TYPICAL
90
i
BANKFULL
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71
85
EX. 48" HDPE
80
EXCAVATE
POOLS
U
TIE IN TO EXISTING STREAM UPSTREAM AND DOWNSTREAM OF PIPE
a
75
FILL OLD SEDIMENT
BASIN
ACCESS
EXISTING STABLE STREAM
OUTLET (RIPRAP)
EXISTING SEDIMENT
BASIN (TYP)
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—VARIES - VALLEY XSECS AVAILABLE FROM ENGINEER O
TIE TERRACE SLOPE TO
EXISTING GROUNDN- x
5' (MIN) 6.0' 5' (MIN) �_q
F251 �
X3:1 VALLEY / TOE�PROPOSED
WALL SLOPES o.75'
BOTH SIDES (TYP) BANKFULL
PROPOSED GRADE MIX EXISTING 10%
POOL TYPICAL, 1.5' DEPTH (SAND/GRAV), BALLAST 50%
(NO LINING IN POOL) (1-3.5"), CLASS A 10% (2-6")
3.5'x9" DEPTH
FIRM SUBGRADE PROPOSED THALWEG
0.1DEEPER THAN TOE
NOTE: SEED, STRAW AND MAT STREAM BANKS, BENCH AND TERRACE SLOPE
UTI Typical Sections (Not to Scale)
EACH PLAN -PROFILE SHEET IS ON ITS OWN LOCAL VERTICAL GRID, HORIZONTAL DATA
BASED ON AERIAL PHOTOGRAPHY AND FIELD TRANSECTS WITH TAPE AND LEVEL
0' 3' 6' 9'
(VERTICAL)
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0' 10' 20' 30'
,-
(HORIZONTAL)
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—VARIES - VALLEY XSECS AVAILABLE FROM ENGINEER O
TIE TERRACE SLOPE TO
EXISTING GROUNDN- x
5' (MIN) 6.0' 5' (MIN) �_q
F251 �
X3:1 VALLEY / TOE�PROPOSED
WALL SLOPES o.75'
BOTH SIDES (TYP) BANKFULL
PROPOSED GRADE MIX EXISTING 10%
POOL TYPICAL, 1.5' DEPTH (SAND/GRAV), BALLAST 50%
(NO LINING IN POOL) (1-3.5"), CLASS A 10% (2-6")
3.5'x9" DEPTH
FIRM SUBGRADE PROPOSED THALWEG
0.1DEEPER THAN TOE
NOTE: SEED, STRAW AND MAT STREAM BANKS, BENCH AND TERRACE SLOPE
UTI Typical Sections (Not to Scale)
EACH PLAN -PROFILE SHEET IS ON ITS OWN LOCAL VERTICAL GRID, HORIZONTAL DATA
BASED ON AERIAL PHOTOGRAPHY AND FIELD TRANSECTS WITH TAPE AND LEVEL
0' 3' 6' 9'
(VERTICAL)
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21
Qe
0+00± OUTLET OF PIPED
SECTION UNDER PAVED ACCESS
ROAD
o+00
1+00 -
BEGIN WORK AT LARGER UPSTREAM
HEACUT (34) UT2, 0+45±
FILL TO MATCH VALLEY PROFILE
SHOWN BELOW
2+Oo
SMALL HEADCUT (<1') BEGIN STREAM DAYLIGHTING,
0+90±
1.5' DROP ON 1stEXISTING FILL HEIGHT ALONG PIPE (AND PROPOSED
RIFFLE VALLEY/STREAM) rL, APPROX.
EXCAVATE
POOLS
EX. 18" HDPE
FILL 2' MIN. ABOVE
TOP OF PIPE
REMOVE 18" HDPE, CONSTRUCT RIFFLES AND POOLS ALONG
ti, SEE TYPICAL SECTIONS 0+90-6+30
INSTALL 20 LF 48" DIA HDPE
(REUSE FROM ONSITE UT1)
`REMOVE EX.
MANHOLE
TOP=89.6
MANHOLE AND PIPE
SYSTEM MAY BE HERE, LID
WAS STUCK DURING
SURVEY
INSTALL 20 LF 48" HDPE, EMBED
EX. STREAM RIFFLES, APPLY INVERT, 1.25' BELOW PROPOSED
HEADGUTS GRADE (TYP)ffi STREAM GRADE
TYPICAL
0+50 1+00 1+50 2+00 2+50 3+00
RIFFLE LENGTHS ARE 30' PER RIFFLE. TYPICAL DROP IS 1.0' PER RIFFLE. CONSTRUCT RIFFLES
USING STONE MIX SPECIFIED IN TYPICAL SECTION.
POOLS ARE 20' LONG PER POOL. SLOPE AT 10:1 FROM TAIL OR RIFFLE TO POOL MAX DEPTH
SPECIFIED ON TYPICAL. SLOPE AT 10:1 BACK UP TO HEAD OF NEXT RIFFLE. POOLS ARE
INTENDED TO BE GENERALLY FLAT- UP TO 0.3' DROP ACROSS POOLS IS ACCEPTABLE.
EXCESS FILL
WASTE AREA
EX. EL.=79.5
(INVERT OLD SED.
BASIN)
END DAYLIGHTING, END
PROJECT UT2, 6+30
FLUENCE
LITTLE
WILLOW
CREEK
0' 30' 60' 90'
(HORIZONTAL)
VARIES - VALLEY XSECS AVAILABLE FROM ENGINEER
TIE TERRACE SLOPE TO
EXISTING GROUND
r-5' (MIN)�y�
3:1 VALLEY 0.4
WALL SLOPES
BOTH SIDES
PROPOSED GRADE
'(MIN)
-TO PROPOSED
(TYP) BANKFULL
MIX EXISTING 10% (SAND/GRAV), ABC 30%,
BALLAST 50% (1-3.5"), CLASS A 10% (2-6")
3'x9" DEPTH
POOL TYPICAL, 0.75' DEPTH \_PROPOSED THALWEG
FIRM SUBGRADE 0.1' DEEPER THAN TOE
NOTE: SEED, STRAW AND MAT STREAM BANKS, BENCH AND TERRACE SLOPE
UT2 Typical Sections (Not to Scale)
TIE IN TO EXISTING VALLEY UPSTREAM AT HEADCUT AND
DOWNSTREAM OF PIPE AT CHANNEL INVERT
PROFILE GRADE BREAK, TRANSITION TO 1.0'/30'
RIFFLES AND 0.4' ROCK SILLS INTO POOLS
—BELOW HERE
0.4' ROCK SILL
DROP (TYP)
3+50 4+00 4+50 5+00 5+50 6+00
0' 5' 10' 15'
(VERTICAL)
6+30
EACH PLAN -PROFILE SHEET IS ON ITS OWN LOCAL VERTICAL GRID, HORIZONTAL DATA
BASED ON AERIAL PHOTOGRAPHY AND FIELD TRANSECTS WITH TAPE AND LEVEL
Re
W'

MATCH BANKFULL
TO EXISTING
GROUND ABOVE PIPE
100
95
90
85
80
0+00
EXISTING FILL HEIGHT
ALONG PIPE (AND PROPOSED
STREAM) 4, APPROX.
RIFFLES, APPLY
TYPICAL
BANKFULL TO FOLLOW EXISTING
GROUND FROM HERE DOWN,
ADJUST TYPICAL ACCORDINGLY
FILL 2' MIN. ABOVE
TOP OF PIPE
BANKFULL-
REFER TO
_ TYPICAL
-7 ORA
EXCAVATE INSTALL 20 LF 48" HDPE,
POOLS EMBED INVERT, 1' BELOW
PROPOSED STREAM GRADE
USE ROCK STRUCTURE FOR PUMP AROUND AND
TO SET NEW GRADE AT EXISTING PIPE ENTRANCE
0+50 1+00 1+50
TIE IN TO EXISTING STREAM UPSTREAM OF PIPE
(ABOVE HEADCUTS), AND DOWNSTREAM OF PIPE
(BELOW 1ST BEAVER DAM)
RIFFLE LENGTHS ARE 30' PER RIFFLE. DROP IS 1.0' PER RIFFLE. CONSTRUCT RIFFLES USING STONE
MIX SPECIFIED IN TYPICAL SECTION.
POOLS ARE 20' LONG PER POOL. SLOPE AT 10:1 FROM TAIL OR RIFFLE TO POOL MAX DEPTH
SPECIFIED ON TYPICAL. SLOPE AT 10:1 BACK UP TO HEAD OF NEXT RIFFLE. POOLS ARE INTENDED
TO BE GENERALLY FLAT- UP TO 0.3' DROP ACROSS POOLS IS ACCEPTABLE.
BEAVER
PONDS
T1 LOWER
LOW FIRST
AM, 2+65±
WSF BELOW 1ST
BEAVER DAM
(TARGET END OF VARIES - VALLEY XSECS AVAILABLE FROM ENGINEER
PROJECT TIE-IN ELEV.) 100
TIE TERRACE SLOPE �
TO EXISTING GROUND
95
5' (MIN) 7' 5' (MIN)
90
IllI
— _FT3 l (—
BANKFULL BENCH BANKFULL BENCF
INVERT, EX. 85 3:1 VALLEY s ' TOE � PROPOSED
DOUBLE PIPE 09' (TYP) BANKFULL
WALL SLOPES
FOOTER OUTLET BOTH SIDES MIX EXISTING 10% (SAND/GRAV),
(DROWNED) BALLAST 50% (1-3.5"), CLASS A 10% (2-6")
80 PROPOSED GRADE I
2+00 2+50 2+80 3.5'x9" DEPTH
POOL TYPICAL, PROPOSED THALWEG
1.4' MAX DEPTH 0.1' DEEPER THAN TOE
FIRM SUBGRADE
NOTE: SEED, STRAW AND MAT STREAM BANKS, BENCH AND TERRACE SLOPE
0' 5' 10' 15' �' c
UT1 Lower Typical Sections (Not to Scale)
(VERTICAL(
E
EACH PLAN -PROFILE SHEET IS ON ITS OWN LOCAL VERTICAL GRID, HORIZONTAL DATA v 3
BASED ON AERIAL PHOTOGRAPHY AND FIELD TRANSECTS WITH TAPE AND LEVEL "
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0' 10' 20'
30'
(HORIZONTAL)
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INVERT, EX. 85 3:1 VALLEY s ' TOE � PROPOSED
DOUBLE PIPE 09' (TYP) BANKFULL
WALL SLOPES
FOOTER OUTLET BOTH SIDES MIX EXISTING 10% (SAND/GRAV),
(DROWNED) BALLAST 50% (1-3.5"), CLASS A 10% (2-6")
80 PROPOSED GRADE I
2+00 2+50 2+80 3.5'x9" DEPTH
POOL TYPICAL, PROPOSED THALWEG
1.4' MAX DEPTH 0.1' DEEPER THAN TOE
FIRM SUBGRADE
NOTE: SEED, STRAW AND MAT STREAM BANKS, BENCH AND TERRACE SLOPE
0' 5' 10' 15' �' c
UT1 Lower Typical Sections (Not to Scale)
(VERTICAL(
E
EACH PLAN -PROFILE SHEET IS ON ITS OWN LOCAL VERTICAL GRID, HORIZONTAL DATA v 3
BASED ON AERIAL PHOTOGRAPHY AND FIELD TRANSECTS WITH TAPE AND LEVEL "
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B
SILL ELEVATI
PER PROFILE
HEAD OF RIFFLE ELEVATION
POINT PER PROFILE
FLOW
SEE PROFILE
FOR LENGTH OF RIFFLE —
7 B'
TOE OF SLOPE (TYP)
Plan View
B
z
D W O
A m s N
wo_
TAIL OF RIFFLE ELEVATION
POINT PER PROFILE
EXTEND CHANNEL LINING ABOVE TOE OF
SLOPE AS SHOWN IN STREAM SPECIFIC TYPICAL SECTION
9-12" THICKNESS, OK TO
INCORPORATE ON-SITE BRANCHES AND LIMBS (WOOD)
RIFFLE INVERT PER PROFILE
NOTES:
1. SUPPLY MATERIAL SPECIFIED IN TYPICAL.
` T
2. MATERIALSHALLBE WELLMIXEDAND COMPACTED., / TOP OF BANK (TYP)
3. THALWEG SHALL BE CONSTRUCTED IN CENTER OF RIFFLEli�C<`i�
(INVERT). EDGES MAY BE 1-2" HIGHER.
Profile A -A' 4.0.5-3" DEAD OR NON -SPOUTING WOOD MAYBE MIXED Section B -B'
OR SUBSTITUTED FOR UP TO 30% OF GRAVEL VOLUM E
WITH ENGINEER APPROVAL.
Riffle
2.1 Not to Scale
Plan View Profile A -A'
TOP OF BANK SILL ELEVATION PER PROFILE
EMBED 3'
INTO
BANK (TYP)
Section B -B'
3 Rock Sill
2.t Not to Scale
12-18" THICKNESS
OF EQUAL PARTS
CLASS A, B, GRAVEL OR EXISTING ON-SITE STREAM GRAVEL WHERE APPROVED
ON-SITE BOULDERS ARE PRESENT AND SHALL
BE USED AS DIRECTED
PRICE FOR OFFSITE BOULDERS WILL ALSO BE SOLICITED
FOOTERS, SEE NOTE 3
FILTER FABRIC
EXTEND FILTER
FABRIC 5' MIN.
UPSTREAM
NOTES:
1. HARVESTED OR OFFSITE BOULDERS
SHOULD BE MINIMUM OF 1.Sx1.5x1
2. BOULDERS SHOULD FITTOGETHER WELL
AND GAPS SHALL BE CHINKED
WITH STONE TO PLUG BEFORE APPLYING
FABRIC
3. USE THE N OF FOOTERS DESIGNATED ON
PROFILE, OR USE 1 FOOTER IF NOT SHOWN
IN PROFILE
NOTES:
1. LIVE STAKES TO BE PLANTED IN AREAS AS SHOWN ON
PLANS AND DIRECTED BY THE ENGINEER.
2. 3' SPACING IN STAGGERED DIAMOND PATTERN
3. LIVE STAKING SHOULD BE COMPLETED DURING THE
DORMANT SEASON, GENERALLY DECEMBER TO APRIL.
LIVE STAKE (TYP)
BASEFLOW WATER
ELEVATION
TOE OF SLOPE ---
LIVE STAKE 17VD1
Section View
aT`ty0 / TOP OF BANK
3N `/„"
0
Live Stakes
EROSION CONTROL
(use at least three of species listed)
Scientific Name
Common Name
Comus amomum
Silky Doga od
Salix sencea
Silky Willow
Physocarpus opulifoli us
Ninebark
Sambucus canadensis
Elderberry
Cephalanthus occidentalis
Buttonbush
\j
STAGGER ABOUT BANKFULL
STAGGER AT TOE AND HALF BANK
Live Stake Detail
Plan View TOE OF SLOPE
BASEFLOW WATER ELEVATION
Plan View
Live Staking
2.1 Not to Scale
1/2" TO 2"
DIAMETER
1.25"
as \ r
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HARDWOOD STAKE
Eco Stake
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EROSION CONTROL
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6" MIN. OVERLAB IN
MATTING (TYP) TOP OF BANK
1. TOE STAKE NOT REQUIRED WHEN
SECURE MATTING IN
DOWNSTREAM DIRECTION
MATTING IS SECURED UNDER 12-18" OF
6" DEEP TRENCH
AT MAP ENDS
ECO -STAKE (TYP)
TOP OF BANK
ECO -STAKE (TYP)
+ +
+
TOE OF SLOPE
+
SP'Mq l
gejNG
�+ + +
+
+
+
+
+ + +
+
+
+ +;,'
ECO -STAKE (TYP)
Section View
TOE OF SLOPE
Plan View
Live Staking
2.1 Not to Scale
1/2" TO 2"
DIAMETER
1.25"
as \ r
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HARDWOOD STAKE
Eco Stake
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EROSION CONTROL
I
NOTES:
MATTING (TYP) TOP OF BANK
1. TOE STAKE NOT REQUIRED WHEN
SECURE MATTING IN
MATTING IS SECURED UNDER 12-18" OF
6" DEEP TRENCH
RIFFLE MATERIAL, MIN. OF 12" OVERLAP
ECO -STAKE (TYP)
TOE OF SLOPE
STAKE (TYP)
Section View
STAKE (TYP)
"
w
Erosion Control Matting
2.1 Not to Scale
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Table 6.24a Teri Seeding Recommendations
Riparian Seed Mix
NOTES:
Common Name
Scientific Name
Rte r
Seeding Rate: 20 Ib/acre
Optimal Planting Dates
Species Name
Common Name Percentage
Panicum clandestinum
Deer Tongue
Mountains
Piedmont
Coastal PFain
Rye grain
Sewle —le
30 6s
Aug. 15 -May 15
Aug. 15 - May 1
Aug. 15 -Apr. 15
Wheat
Triticum aestivum
30 lbs
Aug. 15 -May 15
Aug. 15 - May 1
Aug. 15 -Apr. 15
German millet
Selena italica.
10 b
May 15 -Aug. 15
May I - Aug. 15
Apr 15 -Aug. 15
Browntop millet
Urochloa ramosa
10 bs
May 15 -Aug. 15
Mayt - Aug. 15
Apr. 15 -Aug. 15
SEEDING:
1. SEEDBED WILL BE AMENDED WITH TOPSOIL APPLICATION.
2. PH LEVEL OF SOIL SHALL BE 5.5 T07
3. SEEDBED SHALL BE LOOSE AND FREE OF ROCKS AND DEBRIS PRIOR TO SEEDING AND MULCHING
4. FOR PERMANENT SEEDING, REFER TO NOTES ON SHEET 1.1. TEMPORARY AND PERMANENT
SEED SHOULD BE APPLIED TOGETHER IF PLANTING DATES ALLOW.
MULCHING:
1. 2 TONS PER ACRE
2. GRAIN STRAW PREFERED, NCDOT ALTERNATIVES WILL BE CONSIDERED UPON REQUEST, AS WILL
LEAVES
3. SEEDBED SHALL BE LOOSE AND FREE OF ROCKS AND DEBRIS PRIOR TO SEEDING AND MULCHING
1
Temporary Seeding and Mulching
2.2 Not to Scale
2. STREAM HAS SMALL BASE FLOW. A SUITABLE OUTLET LOCATION IN
THE WOODS MAY BE IDENTIFIED ATTHE DISCHARGE LOCATION SO
THAT NATURAL FILTRATION CAPACITY OF FOREST FLOOR AND TO
AVOID UNNECESSARY DISTURBANCE FOR STONE DEWATERING PAD
OR STONE OUTLET.
GENERAL PUMPING SEQUENCE:
1. USE PUMP TO PUMP FLOW AROUND DURING NEW STREAM
CONSTRUCTION.
2. SET UP ROCK SILT CHECK DAM AT DOWNSTREAM END OF THE
NEWLY CONSTRUCTED CHANNELATTHE END OF EACH DAY
(SANDBAGS ARE AN ACCEPTABLE ALTERNATIVE).
3. BELOW THE CHECK DAM, WATER WILL FLOW INTO THE
EXISTING PIPE. MAKE SURE NO LOOSE SOIL IS PRESENT AROUND
THE PIPE INLET. USE SOD MATS, COIR MATTING OR STONE TO
STABILIZE ANY BARE GROUND.
4. ATTHE BEGINNING OFTHE NEXT DAY, RESHAPE AS
NECESSARY AND USE THE CHECK DAM ASTHE IMPERVIOUS DIKE
FOR THE PUMP AROUND OPERATION - INSTALL IMPERVIOUS
SHEETING AS SHOWN.
Plan View
HIGH STRENGTH
DOUBLE STITCHED
"J" TYPE SEAMS.
BAG PLACED ON
AGGREGATED OR STRAW.
15'
Inset "A"
Dewatering Ba,
Permanent Riparian Seed Mix
2.2 Not to Scale
EWN IN SPOUT
HIGH STRENGTH STRAPPING
FOR HOLDING HOSE
IN PLACE.
-WATER FLOW
FROM PUMP
FLEXIBLE
DISCHARGE HOSE
EXISTING TERRAIN
Riparian Seed Mix
NOTES:
Stream Banks, Disturbed Buffer and Upland Areas
1. USE WIRE A MINIUM OF 32" IN WIDTH AND WITH
RIFFLE STONE
MIX
Seeding Rate: 20 Ib/acre
8" of CLASS B RIPRAP
Species Name
Common Name Percentage
Panicum clandestinum
Deer Tongue
20
Andropogon gerardii
Big Bluestem
20
Elymus drginicus
Virginia wildrye
20
Sorghastmm nutans
Indiangrass
20
Chasmanthium latifolium
Riper Cats
10
Juncus effusus
Soft Rush 1
10
Permanent Riparian Seed Mix
2.2 Not to Scale
EWN IN SPOUT
HIGH STRENGTH STRAPPING
FOR HOLDING HOSE
IN PLACE.
-WATER FLOW
FROM PUMP
FLEXIBLE
DISCHARGE HOSE
EXISTING TERRAIN
DEWATERING BAG
NOTES:
STREAM BED
1. USE WIRE A MINIUM OF 32" IN WIDTH AND WITH
RIFFLE STONE
MIX
A MINIMUM OF 6 LINES OF WIRES WITH 12" STAY
8" of CLASS B RIPRAP
SPACING.
FILTER
FABRIC
AND FASTEN ADEQUATELY TO THE WIRES AS
15'to 20'
NOTE:
SANDBAG 1. PROVIDE STABILIZED OUTLET TO
IMPERVIOUS DIKE (24" X 12" X 6") STREAMBED.
(SEE INSET "B") OR STONE.
IMPERVIOUS SHEETING
FLOW
?ED OUTLET
RIPRAP AND
°ILTER FABRIC.
(SEE INSET "C")
Inset"B"
Impervious Dike
STABILIZED OUTLET USING CLASS B
RIPRAP TRENCHED INTO EXISTING
GROUND A MINIMUM OF 6". SIZE AND
LOCATION TO BE DETERMINED IN THE
FIELD BY THE ENGINEER.
FLEXIBLE DISCHARGE HOSE FROM
10' MIN. / PUMP AROUND PUMP HELD IN PLACE
WITH SAND BAGS AS NEEDED.
FILTER FABRIC
Pum Around System Inset O
4 Stabilized Outlet
2.2 Not to Scale
8' MAX. WITH WIRE
(6' MAX. WITHOUT WIRE)
MIDDLE AND VERTICAL W RES
SHALL BE 12 } GAGE MIN.
FILTER FABRIC
TOP AND BOTTOM STRAND
SHALL BE 10 GAUGE MIN.
WIRE
3 Temporary Silt Fence
2.2 of to Scale
Plan View
NO.57 STONE
INSTALL AND MAINTAIN THREE
CHECK DAMS LOCATED AT
FILTER FABRIC
NOTES:
COMPACTED FILL
1. USE WIRE A MINIUM OF 32" IN WIDTH AND WITH
RIFFLE STONE
MIX
A MINIMUM OF 6 LINES OF WIRES WITH 12" STAY
SPACING.
77777
2. USE FILTER FABRIC A MINIMUM OF 36" IN WIDTH
AND FASTEN ADEQUATELY TO THE WIRES AS
-
DIRECTED BY THE ENGINEER.
3. PROVIDE S'STEEL POST OF THE SELF -FASTENER
ANGLE STEELTYPE. ANGLE STEELTYPE.
/
EXTEND FABRIC J
INTO TRENCH
3 Temporary Silt Fence
2.2 of to Scale
Plan View
NO.57 STONE
INSTALL AND MAINTAIN THREE
CHECK DAMS LOCATED AT
CLASS B
DOWNSTREAM LIMITS OF PROJECT
RIPRAP OR
CAN BE REDUCED
RIFFLE STONE
MIX
TO ONE CHECK DAM WHEN
PONDS ARE PRESENT UPSTREAM
EXISTING GROUND
as
�o
wo
�ry
O`
Plan View
2'MIN. SPILLWAY CRES
NO. 57 STONE 4 INCHES
WIDE ON UPSTREAM FACE CLASS B RIPRAP
OR RIFFLE
FLOW - - STONE MIX
vy —
MAY SERVE AS IMPERVIOUS DIKE 5' MIN.
I.� 20 20
WORK FLOW
AREA /�� �� �— TOP OF BANK
CONTRACTOR SHALL REMOVE
Profile View SEDIMENT WHEN DEPTH
REACHES9"
CLASS B RIPRAP —
TOE OF SLOPE
Rock Silt Check Dams
2.2 Not to Scale
co,a,.., A -A'
f STREAM
WIDTH
Section B -B'
�or�oro
z°LL
QIrc
3 o '
w Zrmz
a .6Z==�gv
aZ1E
H W S
K,
r
4�
H
Ma
N
(V
(SEE INSET "A")
NOTES:
I. IF PUMPING CLEAN WATER, NO DEWATERING BAG IS REQUIRED.
15