20140090 Ver 2_U2579B Sites 3a and 3b restoration_20150522

STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
PAT MCCRORY ANTHONY J. TATA
GOVERNOR SECRETARY

DATE: May 22, 2015

TO: John Thomas, US Army Corps of Engineers
Dave Wanucha, NC Division of Water Resources

FROM: Amy Euliss, NCDOT Division 9 Division Environmental Officer

SUBJECT: Restoration plan for temporary impacts at permit sites 3a and 3b on the
Winston-Salem Northern Beltway (Eastern Section, Future I-74; From US
158 to I-40 BUS/US 421) (STIP #U-2579B) in Forsyth County.

The attached restoration plans have been internally approved by NCDOT Forsyth
Resident Engineer’s office, Randy Griffin and Byron Moore (PDEA’s Natural
Environment Engineering Group), Phil Suggs (Roadside Environmental), and me. Below
is a discussion of the permit sites, restoration plans, and the conditions of the plans.

In the 404 and 401 permits issued for the project, 545 linear feet of temporary impacts
were permitted for permit site 3A, and 194 linear feet of temporary impacts were
permitted for permit site 3B. Per the plans, approximately 424 linear feet of stream will
be restored at site 3a and 194 linear feet of stream will be stored at site 3b. Based on
earlier discussions with you, we are not proposing mitigation for the differences in linear
feet, because of the severe channel instability prior to construction.

Tributaries 3A and 3B are the subject streams that will be temporarily impacted by the
construction of the Y1 detour road. These tributaries will be piped and filled during
roadway construction but returned to stable condition upon removal of the detour road
and restoration of the site. Tributaries 3A and 3B are in poor existing condition. These
streams are currently in a transition between a higher headwater position in the valley and
a lower position in the valley, where they come together and flow towards higher order
streams. This transition zone is steep, and the urbanizing drainage has moved these
streams towards a condition of greater instability. The planform for both streams is
unstable and at times torturous. This has resulted in poor conditions of the outer banks,
with mass wasting and unstable undercut banks. Some of the banks are stabilized by a
covering of invasive shrubs and vines, but the overall condition of these banks is poor.
The streams are characterized by low width-to-depth ratios and minimal access to a bench
or floodplain. Because of the presence of existing grade control provided by a riprap pad
installed by others to protect a sanitary sewer line, Tributary 3B (above the rip rap) has
better channel condition than other reaches. Below the riprap pad however, there is a two
to three foot drop in the bed elevation where the stream becomes more incised. Without
DIVISION OF HIGHWAYS DIVISION NINE DIVISION OFFICE
375 SILAS CREEK PARKWAY, WINSTON-SALEM, NC 27127
PHONE [phone] FAX [phone]

this stabilization, the stream would likely have headcut up through the existing valley.
These current conditions are typical of poorly functioning, unstable stream that have been
impacted by urbanization within the Piedmont of North Carolina. The post-construction
stream will be stable and improve the function of this stream system. The channel cross-
section is designed to tie-in to the existing channel with a similar width-to-depth ratio, but
will be constructed with a bankfull bench to provide out of bank access for larger flows.
The constructed riffles and step pools that will be built will ensure that the profile
remains stable. By reducing the slope of the riffles and losing elevation in small
increments at the step pools, this steep slope will be spread throughout the stream and not
concentrated in a few areas. These structures will also promote bed form diversity, which
is lacking in the existing channel. This design, paired with the live staking of the banks,
will create a channel that has bench/floodplain access, habitat heterogeneity, a stable
planform, and intact banks. Water will be released into the channel as soon as it’s lined
with coir fiber matting and seeded with native seed mix. As-builts will be submitted to
you after construction is complete.

NCDOT will visually monitor using Level II monitoring (i.e. vegetation success and
stability). We will initiate twice yearly visual monitoring for stability and percent
vegetative cover for one year after the water is released into the newly restored channels.
Since success of the live stakes isn’t imperative to meet permit conditions and site
success, we plan to begin monitoring prior to live stake planting. After the live stakes are
planted, NCDOT will monitor their survival for one year. If survival of the live stakes is
less than 50%, we will replant during the planting season. Please note the monitoring of
the temporary impact restorations were not required in the permits.

As previously discussed, the streams are in temporary drainage and construction
easements. Since the easements are temporary, the NCDOT will not be able to maintain
the restorations (and any planted buffer) in perpetuity, as we do in on-site mitigation
projects.

Please review the plans at your earliest convenience, and let me know if you have any
questions or concerns. I can be reached at [phone] or [e-mail].

Attachments: Restoration plans
Morphological table

cc: Randy Griffin, NCDOT PDEA Environmental Engineering Group, e-copy
Jeremy Guy, NCDOT Forsyth Resident Engineer, e-copy
Phil Suggs, NCDOT Roadside Environmental, e-copy
Angel Crespo, Dragados, inc, e-copy
Tim Morris, KCI, e-copy
i
1,
STATE
PROJECT REFERENCE NUMBER
SHEET
NO.
TOTAL
SHEETS
b
'N. WALKERTOWN
N.C.
U-2579B
1
8
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WINSTON SALEM NORTHERN BELTWAY
KCI JOB# : 20157
m
52EPD
(NC DOT PROJECT # U-2579B)
STREAM RESTORATION SITE #3
or
WINSTON-SALEM
PROJECT
/ SITE
CD
FORSYTH COUNTY, NORTH CAROLINA
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VICINITY MAP 1
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ALL COORDINATES AND ELEVATIONS BASED
ON SURVEY FILE "PERM 3 ASBUILT.DWG"
PROVIDED TO KCI ASSOCIATES OF NC BY
DRAGADOS USA ON 2015-04-17.
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INDEX OF SHEETS
DIRECTIONS TO SITE
PROJECT DATA
Prepared In the Of floe of:
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�� ASSOCIATES OF NC
1 TITLE SHEET
2 SITE PLAN
3 PROFILES AND CROSS -SECTIONS
FROM RALEIGH, TAKE 1-40 WEST TO OLD
GREENSBORO ROAD NE IN WINSTON-
SALEM. TAKE EXIST 10 FROM 1-40 BUS
SITE 3A RESTORATION LENGTH = 424 FEET
SITE 3B RESTORATION LENGTH = 170 FEET
ENGINEERS•PL ANNERS•ECOLOGISTS
SUITE 220 LANDMARK CENTER II
aeol sIx FORKS RD., RALEIGH, NC
4-5 PLANTING PLAN
6-7 DETAILS
WEST /US-421 NORTH. TAKE US-158 E /
REIDSVILLE ROAD TO FREEMAN PARK
Prepared for:
Prepared ty:
TIM MORRIS
8 SITE STABILIZATION PLAN
COURT, WHICH IS THE ACCESS TO THE
ANGEL CRESPO
PROJECT MANAGER
SITE.
DEPUTY PROJECT MANAGER
ALEX FRENCH
PROJECT DESIGNER

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PROPOSED STEP POOL.
SEE DETAIL SHEET 6.
(TYP. OF 8)
PROPOSED RIFFLE
WITH ROCK SILL.
SEE DETAIL SHEET 6.
(TYP. OF 20) ♦
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END SITE 3A ,♦
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PROPOSED 8" -
SEWER PIPE
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BEGIN SITE 3A
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MANHOLE TO BE
REMOVED
54" CMP TO BE INSTALLED ''
DURING TEMPORARY ROAD /
Y1 DETOUR CONSTRUCTION /
TO BE REMOVED PRIOR TO/
STREAM RESTORATION /
ACTIVITIES. /
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WINGWALL ''�� l
\' CONTRACTOR TO % ' •`io0° aQ• / O /
TAKE CARE NOT TO / + /
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♦ AT RIFFLE CROSSING/ / /
♦♦♦ L" SANITARY SEWER
INE TO BE REMOVED / / /
OP / / /
TEMPORARY ROAD TO BE �(2- ' //
INSTALLED FOR THE Y1 DETOUR.
ROAD TO BE REMOVED PRIOR TO
STREAM RESTORATION ACTIVITIES.
/
/
/
/
/
54" CMP TO BE INSTALLED
DURING TEMPORARY ROAD /
Y1 DETOUR CONSTRUCTION. //
TO BE REMOVED PRIOR TO /
STREAM RESTORATION /
ACTIVITIES. /
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DRAGADOS USA
WINSTON-SALEM NORTHERN BELTWAY
FORSYTH COUNTY, NORTH CAROLINA
DATE MAY 2015
SCALE: GRAPHIC
SITE PLAN
SHEET 2 OF 8

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PROFILE - SITE 3B
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STRUCTURES - SITE 3A
STATION
ELEVATION
STRUCTURE
10+00.00
887.20
ROCK SILL -BEGIN
10+12.62
887.06
ROCK SILL -END
10+20.49
887.06
ROCK SILL -BEGIN
10+35.70
886.89
ROCK SILL -END
10+48.07
886.89
ROCK SILL -BEGIN
10+62.40
886.74
ROCK SILL -END
10+62.40
886.74
STEP POOL -SILL
10+77.65
886.26
ROCK SILL -BEGIN
10+89.82
886.13
ROCK SILL -END
11+04.99
886.13
ROCK SILL -BEGIN
11+20.98
885.95
ROCK SILL -END
11+20.98
885.95
STEP POOL -SILL
11+35.97
885.49
ROCK SILL -BEGIN
11+51.15
885.32
ROCK SILL -END
11+58.92
885.32
ROCK SILL -BEGIN
11+70.21
885.20
ROCK SILL -END
11+80.45
885.20
ROCK SILL -BEGIN
11+93.81
885.05
ROCK SILL -END
11+93.81
885.05
STEP POOL -SILL
12+04.79
884.61
ROCK SILL -BEGIN
12+20.64
884.44
ROCK SILL -END
12+31.26
884.44
ROCK SILL -BEGIN
12+48.58
884.25
ROCK SILL -END
12+55.28
884.25
ROCK SILL -BEGIN
12+72.53
884.06
ROCK SILL -END
12+81.13
884.06
ROCK SILL -BEGIN
12+97.93
883.87
ROCK SILL -END
12+97.93
883.87
STEP POOL -SILL
13+15.26
883.37
ROCK SILL -BEGIN
13+30.89
883.20
ROCK SILL -END
13+40.64
883.20
ROCK SILL -BEGIN
13+72.60
882.85
ROCK SILL -END
STRUCTURES - SITE 3B
STATION
ELEVATION
STRUCTURE
20+00.00
886.60
ROCK SILL -BEGIN
20+11.89
886.47
ROCK SILL -END
20+22.05
886.47
ROCK SILL -BEGIN
20+37.00
886.30
ROCK SILL -END
20+37.00
886.30
STEP POOL -SILL
20+51.94
885.70
ROCK SILL -BEGIN
20+65.97
885.55
ROCK SILL -END
20+72.72
885.55
ROCK SILL -BEGIN
20+84.31
885.42
ROCK SILL -END
20+84.31
885.42
STEP POOL -SILL
20+94.33
884.83
ROCK SILL -BEGIN
21+08.24
884.68
ROCK SILL -END
21+08.24
884.68
STEP POOL -SILL
21+18.38
884.09
ROCK SILL -BEGIN
21+34.67
883.91
ROCK SILL -END
21+34.67
883.91
STEP POOL -SILL
21+48.41
883.31
ROCK SILL -BEGIN
21+69.53
883.00
ROCK SILL -END
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FORSYTH COUNTY. NORTH CAROLINA
DATE: MAY 2015
SCALE: GRAPHIC
PROFILES
AND
CROSS -
SECTIONS
SHEET 3 OF 8

EXISTING
STREAM
EXISTING
WINGWALL
END SITE 3A
END SITE 3B
NOTE:
ALL LIVE STAKES AND BARE ROOT TREES MUST
BE INSTALLED DURING THE DORMANT SEASON
(NOVEMBER 6 - MARCH 24).
PROPOSED 4' DIA
UTILITY MANHOLE
PROPOSED 8"
SEWER PIPE
ogrinfr
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BEGIN SITE 3B
BEGIN SITE 3A
-20' -10' 0'
20' 40'
GRAPHIC SCALE
PLANTING LEGEND:
TYPE I PLANTING ZONE
TYPE II PLANTING ZONE
NOTE:
V/t
SEE SHEET 5 FOR PLANTING SPECIES
AND INSTALLATION SPECIFICATIONS.
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SHEET 4 OF 8

PLANTING DETAILS
LIVE STAKES PLANTING DETAIL
LIVE STAKE
SQUARE CUT
BUDS (FACING UPWARD)
LIVE CUTTING
(I/2'-2" DIAMETER)
ANGLE CUT 30°-45°
2 - 3 Feet
COIR FIBER MAT
LIVE STAKES
EXISTING/PROPOSED
GROUND
EXISTING/PROPOSED
STREAMBED
BANK STABILIZATION WITH LIVE STAKES
NOTE;
LIVE STAKES SHALL BE SPACED APPROXIMATELY 4 FEET
ON CENTER
LIVE STAKES SHALL BE DRIVEN UNTIL APPROXIMATELY Y4
OF LIVE STAKE IS WITHIN GROUND
BAREROOT PLANTING DETAIL
DIBBLE PLANTING METHOD
USING THE KBC PLANTING BAR
l_ 11—III 11
I111 11 =1Er =11-1
Il 0- I�
I_I-1 _I
. Insert planting bar
as shown and pull handle
toward planter.
4. Pull handle of bar
toward planter, firming
soil at bottom.
2. Remove planting bar
and place seedling at
correct depth.
5. Push handle forward
firming soil at top.
PLANTING NOTES:
PLANTING BAG
During planting, seedlings
shall be kept in a moist
canvas bag or similar
container to prevent the
root systems from drying.
KBC PLANTING BAR
Planting bar shall have a
blade with a triangular
cross section, and shall
be 12 inches long,
4 inches wide and
1 inch thick at center.
ROOT PRUNING
All seedlings shall be root
pruned, if necessary, so that
no roots extend more than
10 inches below the
root collar.
3. Insert planting bar
2 inches toward planter
from seedling.
6. Leave compaction
hole open. Water
thoroughly.
II
❑ TYPE 1 STREAMBANK REFORESTATION SHALL BE PLANTED 3 FT. TO 5 IT.
ON CENTER, RANDOM SPACING, AVERAGING 4 FT. ON CENTER,
APPROXIMATELY 2724 PLANTS PER ACRE.
❑ TYPE 2 STREAMBANK REFORESTATION SHALL BE PLANTED 6 FT. TO 10 FT.
ON CENTER, RANDOM SPACING, AVERAGING 8 FT. ON CENTER,
APPROXIMATELY 680 PLANTS PER ACRE.
❑ NOTE: TYPE 1 AND TYPE 2 STREAMBANK REFORESTATION SHALL BE
PAID FOR AS "STREAMBANK REFORESTATION"
STREAMBANK REFORESTATION TYPICAL
SFRIAM
STREAMBANK REFORESTATION
MIXTURE, TYPE, SIZE, AND FURNISH SHALL CONFORM TO THE FOLLOWING:
TYPE 1
50% SALIX NIGRA
50% CORNUS AMOMUM
TYPE 2
25% FRAXINUS PENNSYLVANICA
25% PLATANUS OCCIDENTALIS
25% QUERCUS PHELLOS
25% QUERCUS NIGRA
BLACK WILLOW 2 ft - 3 ft LIVE STAKES
SILKY DOGWOOD 2 ft - 3 ft LIVE STAKES
GREEN ASH 12 in - 18 in BR
SYCAMORE 12 in - 18 in BR
WILLOW OAK 12 in - 18 in BR
WATER OAK 12 in - 18 in BR
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DATE: MAY 2015
SCALE: GRAPHIC
PLANTING
PLAN
SHEET 5 OF 6

FILTER
FABRIC
B
BOULDERS
(SEE NOTE
FOR SIZE)
FILTER
FABRIC
ROCK SILL
(USE DOUBLE LAYER
SILL FOR STEP POOLS,
SEE DETAIL BELOW)
TOP OF
BANK
ELEVATION POINT
(SEE PROFILE SHEET)
ELEVATION POINT
(SEE PROFILE SHEET)
REACH 3A & 3B
Wbkf (ft)
10.0'
Dmax (ft)
1.7'
— A
PLAN VIEW
TOE OF
BANK
HEAD OF
RIFFLE
B
C
TOE OF
RIFFLE
HEAD OF
RIFFLE
3'
MINIMUM
COIR FIBER
MATTING (TYP.)
18" NOM. THICKNESS WELL
GRADED MIX OF (60%) CLASS "1",
(20%)(110%) NO. 571CLASS0%) "A",
STONE AND
ROCK SILL
(USE DOUBLE LAYER
SILL FOR STEP POOLS,
SEE DETAIL BELOW)
GEOTEXTILE
SECTION A -A
Dmax
1/3 Dma
CENTER BOULDER 2"4" LOWER
THAN ABUTTING BOULDER TO
ENCOURAGE FLOW THROUGH CENTER
OF CHANNEL DURING LOW FLOWS.
ROCK SILL DETAIL
NOT TO SCALE
COIR FIBER
MATTING (TYP)
SECTION B-B
18" NOM. THICKNESS WELL
GRADED MIX OF (60%) CLASS "1",
(20%) CLASS "B", (10%) CLASS "A",
AND (10%) NO. 57 STONE
1/3 Dmax
SECTION C-C
TOE OF
BANK
NOTE:
1. BOULDERS SHOULD BE NATIVE STONES
OR SHOT ROCK, ANGULAR AND OBLONG,
WITH AN AXIS APPROXIMATELY
3'Lx2'Wx1.5'D
STONE BOULDER SILL
(TWO LAYERS)
18" NOM. THICKNESS WELL
GRADED MIX OF (60%) CLASS "1",
(20%)
CLASS "A"
NO. 57 STONE AND
STONE TOE:
START ROCK 2FT
BELOW WATERS EDGE
AND EXTEND TO 0.5FT
ABOVE WATERS EDGE
5FT
MIN
PLAN VIEW
LAY FILTER FABRIC OVER UPSTREAM
TOP EDGE OF SILL ROCK(S); BEHIND
FILTER FABRIC, BACKFILL WITH #57
STONE, CLASS A OR B STONE AND/OR
NATURAL STREAM MATERIALS.
PROPOSED
PROFILE
FLOW
FILTER
FABRIC
STEP POOL DETAIL
NOT TO SCALE
NOTES:
1. BOULDERS SHOULD BE NATIVE STONES
OR SHOT ROCK, ANGULAR AND OBLONG,
WITH AN AXIS APPROXIMATELY
3'Lx2'Wx1.5'D
2. BOULDER SILLS TO EXTEND 5' MINIMUM
INTO STREAM BANKS FOR STEP POOL
STRUCTURES.
STONE,
BOULDERS
SEE PROFILE SHEETS FOR
STATIONS AND ELEVATIONS
BASEFLOW
El I I 1=111=1 1111111=ll 1ll 1-
111 1 1=111 11 111
18" NOM. THICKNESS
WELL GRADED MIX
OF (60%) CLASS "1",
(20%) CLASS "B", (10%)
CLASS "A", AND (10%)
NO. 57 STONE
PROFILE VIEW
FILTER FABRIC
(KEY IN UNDER
STREAM BED)
UTILIZE A STABILIZED
OUTLET FOR THE (?c��
DISCHARGE OF ' .'!
CLEAN WATER
IMPERVIOUS DIKE
TEMPORARY -----
FLEXIBLE HOSE
CONTRACTOR MAY UTILIZE
ACCEPTABLE MATERIALS TO
INCLUDE SHEET PILES, SANDBAGS,
AND/OR THE PLACEMENT OF AN
ACCEPTABLE STONE LINED WITH
POLYPROPOLENE OR OTHER
IMPERVIOUS FABRIC. EARTH
MATERIALS SHALL NOT BE USED
TO CONSTRUCT THE IMPERVIOUS
DIKES.
I I SILT AWITH
ROOCKK PAD
PUMP -AROUND
PUMP
1
DEWATERING
PUMP
EXISTING
CHANNEL
IMPERVIOUS DIKE
SEQUENCE OF DEWATERING OPERATIONS
*ANY DEVIATION FROM ABOVE DEWATERING PLAN
WILL REQUIRE DESIGNER APPROVAL.
1. INSTALL SILT BAGS(S) AND ROCK PAD(S).
2. INSTALL UPSTREAM PUMP AND TEMPORARY FLEXIBLE HOSE.
3. PLACE UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING
OPERATIONS FOR STREAM DIVERSION.
4. PLACE DOWNSTREAM IMPERVIOUS DIKE AND PUMPING
APPARATUS. DEWATER ENTRAPPED AREA.
5. PERFORM REPAIR WORK IN ACCORDANCE WITH THE PLANS.
6. EXCAVATE ANY ACCUMULATED SILT AND DEWATER BEFORE
REMOVAL OF IMPERVIOUS DIKES. REMOVE IMPERVIOUS
DIKES, PUMPS, AND TEMPORARY FLEXIBLE HOSE
(DOWNSTREAM IMPERVIOUS DIKES FIRST).
7. REMOVE SILT BAG(S) AND STABILIZE DISTURBED AREA WITH
SEED AND MULCH.
INLET FOR CLEAN
WATER TO BE RAISED
OFF OF STREAM
BOTTOM. THIS MAY
REQUIRE PLACEMENT
OF GRAVEL UNDER
INTAKE.
EXAMPLE OF PUMP -AROUND OPERATION
NOT TO SCALE
STILLING BASIN MAINTENANCE
1. SEDIMENT BAGS SHOULD BE REPLACED WHEN THE CAPACITY OF THE SEDIMENT
BAG HAS EXCEEDED 50%.
2. ACCUMULATED SEDIMENT SHOULD BE DISPOSED OF IN A DESIGNATED
DISPOSAL AREA.
3. SPENT BAGS SHOULD BE DISPOSED OF PROPERLY AND NOT BURIED.
4. GRAVEL PADS SHOULD BE CHECKED DAILY DURING USE TO ENSURE THAT
GRAVEL HAS NOT BEEN WASHED AWAY OR BEEN CHOKED BY EXCESSIVE
SEDIMENTATION.
5. REPLACE PAD WITH CLEAN GRAVEL, AS NEEDED.
EXISTING TERRAIN SILT BAG
15.0- 20.0 ft.
FILTER FABRIC
7/S4188.;,8881;
STREAMBANK
8.0 IN., STONE FOR EROSION CONTROL, CLASS A
NOTE PROVIDE STABILIZED OUTLET DOWN BANK TO STREAM
SPECIAL STILLING BASIN (SILT BAG) WITH ROCK PAD
NOT TO SCALE
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FORSYTH COUNTY, NORTH CAROLINA
DATE: MAY 2015
SCALE GRAPHIC
DETAILS
SHEET 6 OF 8

DIRECTION
OF FLOW
--
ANCHORS ON
1' CENTERS
COIR FIBER
MATTING
ANCHORS ON
3' CENTERS
EXTEND MATTING
TO WATERS EDGE
MATTING
IN TRENCH
ANCHOR TRENCH
ON 1' CENTERS
ANCHOR OVERLAP
ON 1' CENTERS
6" OVERLAY(MIN)
PLAN VIEW
STREAM BED
18"
(NP)
BACKFILL
ANCHORS ON
3' CENTERS
ANCHORS ON
1' CENTERS
L
6" MIN
ANCHORS ON
1' CENTERS
IN TRENCH
MATTING SHALL BE
PLACED IN TRENCH
AND BACKFILLED
ANCHORS ON
1' CENTERS
TYPICAL CROSS SECTION
FLOODPLAIN/
EXISTING
GROUND
COIR FIBER MATTING DETAIL
NOT TO SCALE
2" z 2" (nominal)
WOODEN STAKE
#10 STEEL
REINFORCEMENT BAR
DIAMETER BEND
24"
1" (nominal)
STAPLE
12"
ANCHOR OPTIONS
STOCKPILED
EARTH
SILT FENCE
190 ---
NOTES:
TEMPORARY SEEDING MUST BE APPLIED TO STOCKPILES IF NOT
RELOCATED WITHIN 7 DAYS.
ALL STOCKPILES SHALL BE WITHIN LIMITS OF DISTURBANCE.
SILT FENCE SHALL BE INSTALLED DOWN GRADIENT OF ALL STOCK-
PILES. SEE NCDOT STANDARD SPECIFICATIONS, SECTION 1605 FOR
SILT FENCE SPECIFICATIONS.
TEMPORARY STOCKPILE DETAIL
NOT TO SCALE
DRAGADOS USA
WINSTON-SALEM NORTHERN BELTWAY
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FORSYTH COUNTY, NORTH CAROLINA
DATE: MAY 2015
SCALE: GRAPHIC
DETAILS
SHEET 7 OF 8

TEMPORARY AND PERMANENT SEED MIXES:
NOTES:
THE CONTRACTOR SHALL UTILIZE LINE ITEMS 317, 318 & 336 OF THE
CONTRACT FOR SEED/FERTILIZER/MULCH IN ALL DISTURBED AREAS
WITHIN THE STREAM PROJECT LIMITS. SEE TABLE BELOW.
LINE ITEM
DESCRIPTION
UNIT
312
TEMPORARY SILT FENCE
LF
317
SEED FOR TEMP SEEDING
LB
318
FERT FOR TEMP SEEDING
TON
336
SEEDING AND MULCHING
ACR
GROUND STABILIZATION
SITE AREA
DESCRIPTION
STABILIZATION
TIME FRAME
PERIMETER DIKES,
SWALES, DITCHES
AND SLOPES
7 DAYS
HIGH QUALITY
WATER (HQW)
ZONES
7 DAYS
SLOPES STEEPER
THAN 3:1
7 DAYS
SLOPES 3:1 OR
FLATTER
7 DAYS
ALL OTHER AREAS
WITH SLOPES FLATTER
THAN 4:1
7 DAYS
INSPECTIONS
WEEKLY INSPECTIONS REQUIRED.
RAIN GAUGE MUST BE PRESENT AT SITE.
INSPECTIONS REQUIRED AFTER 0.5" RAIN EVENTS.
INSPECTIONS ARE ONLY REQUIRED DURING
"NORMAL BUSINESS HOURS".
INSPECTION REPORTS MUST BE AVAILABLE
ON -SITE DURING BUSINESS HOURS UNLESS A SITE
SPECIFIC EXEMPTION IS APPROVED.
RECORD MUST BE KEPT FOR 3 YEARS AND
AVAILABLE UPON REQUEST.
ELECTRONICALLY -AVAILABLE RECORDS MAY BE
SUBSTITUTED UNDER CERTAIN CONDITIONS.
1. THE CONTRACTOR SHALL EXERCISE EVERY REASONABLE PRECAUTION
THROUGHOUT THE CONSTRUCTION OF THE PROJECT TO PREVENT EROSION
AND SILTATION. EROSION CONTROL MEASURES SHALL BE INSTALLED AND
MAINTAINED IN ACCORDANCE WITH THE PROJECT PLANS, NORTH CAROLINA
SEDIMENT AND EROSION CONTROL GUIDELINES AND AS DIRECTED BY
THE DESIGNER.
2. ALL REPAIR WORK SHALL BE PERFORMED IN DRY OR ISOLATED AREAS, WITH
NO STANDING WATER OR WATER FLOWING THROUGH THE WORK AREA.
3. ALL EXCAVATED MATERIAL SHALL BE STOCKPILED WITHIN THE LIMITS OF
DISTURBANCE FOR LATER REUSE OR DISPOSAL. THE CONTRACTOR IS
RESPONSIBLE FOR INSTALLING APPROPRIATE STABILIZATION MEASURES
AROUND THE STOCKPILE AREA(S) AND ANY TEMPORARY OR PERMANENT
SPOIL AND TOPSOIL PILES TO PREVENT EROSION AND SEDIMENTATION. ALL
PERMANENT OR TEMPORARY SPOIL PILES SHALL HAVE SILT FENCE INSTALLED
ON THE LOW SIDE OF THE SPOIL PILES.
4. A TEMPORARY PUMP -AROUND SHALL BE UTILIZED BY THE CONTRACTOR
DURING WORK ON THE STREAM TO DIVERT FLOW FROM AND DEWATER
THE DESIGNATED AREA IN ORDER TO WORK. THE TEMPORARY
PUMP -AROUND USED BY THE CONTRACTOR SHALL MEET ALL REQUIREMENTS
SPECIFIED IN THESE PLANS. THE TEMPORARY PUMP -AROUND SHALL BE
INSTALLED AND REMOVED IN ACCORDANCE WITH THE MANUFACTURERS
GUIDELINES. TWENTY-FOUR (24) HOURS PRIOR TO THE INITIATION OF PUMP -AROUND
ACTIVITIES, THE CONTRACTOR SHALL MEASURE THE APPROXIMATE FLOW
RATE AT THE PUMP -AROUND LOCATION. THE FLOW RATE SHALL BE SUBMITTED
TO THE DESIGNER FOR APPROVAL. THE CONTRACTOR SHALL, THEREAFTER,
UTILIZE A PUMP(S) SUFFICIENT TO ACCOMODATE 120% (1.2 TIMES) THE APPROVED
FLOW RATE.
5. IN THE EVENT OF A STORM, THE CONTRACTOR WILL BE RESPONSIBLE FOR THE
REMOVAL OR PROTECTION OF ANY EQUIPMENT, TOOLS, MATERIALS OR
OTHER ITEMS NEEDED TO COMPLETE THE WORK THAT COULD BE AFFECTED
BY STORM FLOWS.
6
7
8
SEE NCDOT STANDARD SPECIFICATIONS, SECTION 1605 FOR SILT FENCE SPECIFICATIONS.
SILT FENCE SHALL BE INSTALLED APPROXIMATELY 8' FROM THE TOP OF BANK
FOR THE PROJECT STREAM PRIOR TO THE COMMENCEMENT OF DISTURBANCE
ACTIVITIES. SILT FENCE SHALL BE TEMPORARILY REMOVED IN EACH ISOLATED
WORK AREA TO PERMIT GRADING OF THE RESTORED STREAM. IMMEDIATELY
FOLLOWING THE COMPLETION OF STABILIZATION MEASURES FOR EACH ISOLATED
AREA AND PRIOR TO THE INITIATION OF WORK ON ANOTHER SECTION, THE SILT
FENCE SHALL BE REINSTALLED AT ITS ORIGINAL LOCATION. SILT FENCE SHALL BE
MAINTAINED HEREAFTER AND SHALL NOT BE REMOVED UNTIL GROUND COVER
HAS BEEN FULL ESTABLISHED WITHIN THE LIMITS OF DISTURBANCE. SILT FENCE
SHALL ALSO BE INSTALLED ON THE LOW SIDE OF ANY TEMPORARY STOCKPILES OF
EXCAVATED MATERIAL.
ALL DISTURBED SOILS WILL BE SEEDED FOR VEGETATIVE STABILIZATION
FOLLOWING THE GUIDELINES DESCRIBED ON THIS SHEET AND ACCORDING
TO THE FOLLOWING SCHEDULE: TEMPORARY OR PERMANENT SEEDING
MUST BE APPLIED ON ALL GRADED SLOPES AND FILL WITHIN 7 CALENDAR
DAYS, PERMANENT SEEDING MUST BE APPLIED TO ALL DISTURBED AREAS
WITHIN 15 WORKING DAYS OR 90 CALENDER DAYS.
ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CHECKED FOR
STABILITY AND FUNCTIONAL OPERATION FOLLOWING EVERY RUNOFF
PRODUCING RAIN EVENT AND/OR AT LEAST ONCE PER WEEK. ANY NEEDED
MAINTENANCE OR REPAIRS SHALL BE MADE IMMEDIATELY TO MAINTAIN ALL
MEASURES AS DESIGNED. ACCUMULATED SEDIMENT SHALL BE REMOVED FROM
CONTROL MEASURES WHEN THEY REACH APPROXIMATELY 50% OF THEIR
FUNCTIONAL CAPACITY. THESE MEASURES SHALL BE REPAIRED IF DISTURBED
DURING MAINTENANCE. ALL SEEDED AREAS SHALL BE FERTILIZED, RESEEDED
AND MULCHED, AS NECESSARY, TO PROMOTE THE ESTABLISHMENT OF
VEGETATION COVER.
CONSTRUCTION SEQUENCE:
THE CONTRACTOR IS RESPONSIBLE FOR FOLLOWING THE SEQUENCE OF CONSTRUCTION IN ACCORDANCE WITH THE PLANS, AS DIRECTED
BY THE DESIGNER. CONSTRUCTION SHALL PROCEED IN THE SPECIFIED MANNER UNLESS OTHERWISE DIRECTED OR APPROVED BY THE
DESIGNER. THE FOLLOWING PROVISIONS, ALONG WITH THE INSTRUCTIONS CONTAINED IN THE PLANS, CONSTITUTE THE SEQUENCE OF
CONSTRUCTION.
GENERAL SITE NOTES:
- ALL PUMP AROUND OPERATIONS SHALL BE INSTALLED IN A MANNER THAT IT WILL BE ALLOWED TO RUN 24 HOURS A DAY UNLESS CHANNEL
WITHIN THE PUMP AROUND LOCATION CAN BE STABILIZED WITHIN THE WORK DAY.
- UPON APPROVAL FROM THE DESIGNER, PHASES 2 THROUGH 4 MAY BE CONSTRUCTED IN A DIFFERENT SEQUENCE THAN INDICATED BELOW
OR CONCURRENTLY.
PHASE 1: INITIAL SITE PREPARATION.
1. INSTALL EROSION CONTROL DEVICES IN ACCORDANCE WITH THE SITE STABILIZATION PLAN AND AS DIRECTED BY THE DESIGNER.
PHASE 2: COMPLETE STREAM RESTORATION OF SITE 3A - STA 10+00 TO 13+50
2. BEFORE CONSTRUCTION ACTIVITIES START, INSTALL PUMP AROUND OPERATIONS AS DESCRIBED IN THESE PLANS.
3. BUILD CHANNEL AS DEPICTED IN THESE PLANS, BEGINNING AT THE MOST UPSTREAM POINT.
4. ONCE DISTURBED AREAS AND EXPOSED SLOPES ARE STABILIZED, REMOVE PUMP AROUND SYSTEM.
PHASE 3: COMPLETE STREAM RESTORATION OF SITE 3B
5. BUILD CHANNEL AS DEPICTED IN THESE PLANS, BEGINNING AT THE MOST UPSTREAM POINT.
6. ONCE DISTURBED AREAS AND EXPOSED SLOPES ARE STABILIZED, REMOVE PUMP AROUND SYSTEM.
PHASE 4: COMPLETE STREAM RESTORATION OF SITE 3A - STA 13+50 TO 14+00
7. BEFORE CONSTRUCTION ACTIVITIES START, INSTALL PUMP AROUND OPERATIONS AS DESCRIBED IN THESE PLANS. THIS MAY
REQUIRE SIMULTANEOUSLY PUMPING AROUND THE UPSTREAM PORTION OF SITE 3A AND SITE 3B.
8. BUILD CHANNEL AS DEPICTED IN THESE PLANS, BEGINNING AT THE MOST UPSTREAM POINT.
9. ONCE DISTURBED AREAS AND EXPOSED SLOPES ARE STABILIZED, REMOVE PUMP AROUND SYSTEM(S).
PHASE 5: PLANTING
10. INSTALLING LIVE STAKES AND BARE ROOT TREES CAN BE INITIATED PRIOR TO, AFTER, OR CONCURRENTLY AS PHASES 2-4 ARE
COMPLETED, AS LONG AS THE PLANTING OCCURS AFTER DISTRUBANCE IS COMPLETE AND STABILIZATION IS INITIATED. LIVE STAKES
AND BARE ROOT TREES SHALL BE INSTALLED DURING THE DORMANT SEASON (NOVEMBER 6 - MARCH 24). PREPARE AND INSTALL LIVE
STAKES AND BARE ROOT TREES IN ACCORDANCE WITH THESE PLANS AND AS DIRECTED BY THE DESIGNER.
*** IF CONSTRUCTION OCCURS OUTSIDE OF THE DORMANT SEASON, UPON APPROVAL OF THE DESIGNER, PHASE 5 SHALL BE COMPLETED
IN THE DORMANT SEASON, AFTER PHASE 6.
PHASE 6: COMPLETION OF PROJECT SITE
11. REMOVE ALL REMAINING WASTE MATERIALS AND RESTORE THE REMAINING DISTURBED AREAS TO THEIR PRIOR CONDITION.
SEED AND MULCH ALL DISTURBED AREAS UTILIZING THE SEED AND MULCH MIXES SPECIFIED IN THE PLANS.
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DATE MAY 2015
SCALE: N.T.S.
SITE
STABILIZATION
PLAN
SHEET 8 OF 8

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u
r
e
/
b
a
n
k
f
u
l
l

w
i
d
t
h
-
-
n
/
a
2
.
0
-
3
.
0
1
.
5
-
2
.
5
1
.
3
-
2
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5
Me
a
n
d
e
r

l
e
n
g
t
h
/
b
a
n
k
f
u
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l

w
i
d
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-
-
n
a
7
.
0
-
1
2
.
0
4
.
2
-
5
.
6
4
.
2
-
5
.
0
<-
-
-

W
e

d
i
d

n
o
t

m
e
a
n
d
e
r

o
u
r

s
t
r
e
a
m
,

t
r
i
e
d

t
o

k
e
e
p

i
t

n
e
a
r

e
x
i
s
t
i
n
g

p
a
t
h
,

s
o

e
n
d
e
d

u
p

l
o
w
e
r

r
a
t
i
o
Va
l
l
e
y

s
l
o
p
e
0
.
0
1
4
1
0
.
0
1
1
3
0
.
0
1
1
4
0
.
0
2
2
2
<-
-

h
i
g
h

b
e
c
a
u
s
e

o
f

4

d
r
o
p
s
,

n
e
w

f
l
o
o
d
p
l
a
i
n
,

r
i
f
f
l
e

s
l
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p
e
s

a
t

0
.
0
1
1
Av
e
r
a
g
e

w
a
t
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r

s
u
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f
a
c
e

s
l
o
p
e
0
.
0
1
0
8
0
.
0
1
7
2
0
.
0
1
1
0
0
.
0
2
1
2
<-
-

h
i
g
h

b
e
c
a
u
s
e

o
f

d
r
o
p

a
f
t
e
r

s
e
w
e
r

l
i
n
e
,

p
r
o
p
o
s
e
d

h
i
g
h
e
r

d
u
e

t
o

a
d
d
e
d

p
o
o
l
s
,

r
i
f
f
l
e

s
l
o
p
e
s

a
t

0
.
0
1
1
Ri
f
f
l
e

s
l
o
p
e
0
.
0
1
1
0
.
0
0
2
8
0
.
0
1
1
0
.
0
1
1
<-
-

v
e
r
y

l
o
w

s
l
o
p
e

u
p

t
o
p

w
h
e
r
e

c
r
o
s
s

s
e
c
t
i
o
n

t
a
k
e
n
,

h
a
s

n
o
t

i
n
c
i
s
e
d

y
e
t

l
i
k
e

b
o
t
t
o
m

s
e
c
t
i
o
n
Po
o
l

s
l
o
p
e
-
-
0
0
Po
o
l

t
o

p
o
o
l

s
p
a
c
i
n
g
-
-
2
0
-
3
0
2
0
-
2
8
Po
o
l

l
e
n
g
t
h
-
-
7
-
1
7
7
-
1
5
Ri
f
f
l
e

s
l
o
p
e
/
a
v
g

w
a
t
e
r

s
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r
f
a
c
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s
l
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p
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1
.
0
2
0
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1
6
1
.
1
-
1
.
8
1
.
5
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2
.
0
1
.
0
0
0
.
5
2
<-
-

l
o
w

b
e
c
a
u
s
e

o
f

4

d
r
o
p
s
,

h
i
g
h

w
a
t
e
r

s
l
o
p
e

<-
-

v
e
r
y

l
o
w

s
l
o
p
e

u
p

t
o
p

w
h
e
r
e

c
r
o
s
s

s
e
c
t
i
o
n

t
a
k
e
n
,

h
a
s

n
o
t

i
n
c
i
s
e
d

y
e
t

l
i
k
e

b
o
t
t
o
m

s
e
c
t
i
o
n
Po
o
l

s
l
o
p
e
/
a
v
g

w
a
t
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r

s
u
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f
a
c
e

s
l
o
p
e
-
-
0
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0
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0
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4
0
0
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0
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0
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2
0
0
0
Po
o
l

l
e
n
g
t
h
/
b
a
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k
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u
l
l

w
i
d
t
h
-
-
0
.
7
-
1
.
7
0
.
7
-
1
.
5
Po
o
l

t
o

p
o
o
l

s
p
a
c
i
n
g
/
b
a
n
k
f
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l
l

w
i
d
t
h
-
-
1
.
5
-
5
.
0
4
.
0
-
7
.
0
2
.
0
-
3
.
0
2
.
0
-
2
.
8
T1

a
n
d

T
2

d
o

n
o
t

h
a
v
e

d
i
s
t
i
n
c
t

b
e
d

f
e
a
t
u
r
e
s
,

t
h
e
r
e
f
o
r
e

n
o

p
a
t
t
e
r
n

d
a
t
a

w
e
r
e

c
o
l
l
e
c
t
e
d

a
n
d

o
n
l
y

l
i
m
i
t
e
d

d
i
m
e
n
s
i
o
n

a
n
d

p
r
o
f
i
l
e

d
a
ta

w
e
r
e

c
o
l
l
e
c
t
e
d
.
Dimension Pattern ProfileBa
n
k
f
u
l
l

C
r
o
s
s
-
S
e
c
t
i
o
n
a
l

a
r
e
a

(
A
bk
f
)
(
f
t
2)
Wi
d
t
h
/
d
e
p
t
h

R
a
t
i
o

(
W
bk
f
/d
bk
f
)
Ma
x
i
m
u
m

D
e
p
t
h

(
d
mb
k
f
)
(
f
t
)
Wi
d
t
h

o
f

f
l
o
o
d

p
r
o
n
e

a
r
e
a

(
W
fp
a
)
(
f
t
)
En
t
r
e
n
c
h
m
e
n
t

R
a
t
i
o

(
E
R
)
Si
n
u
o
s
i
t
y

(
s
t
r
e
a
m

l
e
n
g
t
h
/
v
a
l
l
e
y

l
e
n
g
t
h
)

(
K
)
T2
Ro
s
g
e
n

S
t
r
e
a
m

T
y
p
e
Mi
t
i
g
a
t
i
o
n

T
y
p
e
Dr
a
i
n
a
g
e

A
r
e
a

(
m
i
2)
Ba
n
k
f
u
l
l

W
i
d
t
h

(
W
bk
f
)
(
f
t
)
Ba
n
k
f
u
l
l

M
e
a
n

D
e
p
t
h

(
d
bk
f
)
(
f
t
)
Va
r
i
a
b
l
e
s
Re
f
e
r
e
n
c
e

(c
o
m
m
o
n

de
s
i
g
n

ra
t
i
o
s
)
Re
f
e
r
e
n
c
e

(c
o
m
m
o
n

de
s
i
g
n

ra
t
i
o
s
)
T1
T
2
T
1