20171548 Ver 1_Compliance Response_20201026

Strickland, Bev
From: Lauren Norris -Heflin <[e-mail]>
Sent: Monday, October 26, 2020 9:42 AM
To: [e-mail]; Homewood, Sue
Cc: Becky Ward; Sydni Law
Subject: [External] Huffman Point - Culvert Plans for Approval, SAW-2017-02386, DWR #
20171548
Attachments: 1-Repair Plan and Profile.pdf, 2-Details.pdf
Follow Up Flag: Follow up
Flag Status: Completed
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[e-mail]
Good morning Dave and Sue,
Please find attached the proposed culvert plans to resolve the NOV at the Huffman Point site.
These repairs can be completed within 30-days of your approval. It is estimated that the repairs will take approximately
1-week to complete from commencement of the work on -site.
Can you confirm your approval of these plans for resolution of the NOV?
Thanks,
Lauren Norris -Heflin
Environmental Project Manager
TIMMONS GROUP I www.timmons.com
5410 Trinity Rd, Suite 102 1 Raleigh, NC 27607
Office: 919.866.4943 1 Cell: 919.607.1723 1 Fax: [phone]
[e-mail]
Your Vision Achieved Through Ours
1

PLANTING NOTES:
1. WOODY SPECIES TO BE PLANTED WITH A COMBINATION OF THE FOLLOWING SHRUBS:ROOTED PLANT PLUGS OR LIVE STAKES IN ZONE A. PLANTS TO BE
PLANTED TON CENTER. SUBMIT PLANT QUANTITIES FOR APPROVAL PRIOR TO PLANTING. SUBSTITUTIONS REQUIRE APPROVAL.
TOTAL PLANTS=100 (COUNT BASED ON APPROXIMATE DISTURBED AREA SHOWN. ADJUST PLANT QUANTITIES IF DISTURBED
AREA SHOWN IS EXCEEDED.)
AMELANCHIER ARBOREA - SERVICE BERRY
LINDERA BENZOIN - SPICEBUSH
ILEX VERTICILLATA - WINTERBERRY
CEPHALANTHUS OCCIDENTALIS - BUTTONBUSH
CALYCANTHUS FLORIDUS - SWEET -SHRUB
SAMBUCUS-ELDERBERRY
XANTHORHIZA SIMPLICISSIMA - YELLOW ROOT
2. STREAM BANKS TO BE MATTED WITH FIBERWONDERS COIR MAT C-700 OR APPROVED EQUAL. PLACE RIPARIAN SEED, EROSION CONTROL SEED AND THIN
LAYER OF STRAW PRIOR TO MATTING INSTALLATION IN ZONE A.
3. PLANTING STOCK TO BE GROWN BY NURSERIES WITHIN THE SAME PHYSIOGRAPHIC REGION (PIEDMONT) AND WITHIN 200 MILES OF THE PROJECT SITE.
4. ZONE B - RIGHT OF WAY/EASEMENT TO BE PLANTED WITH SITE TURF GRASS AND TEMPORARY SEED AND MULCHED.
5. FERTILIZER RECOMMENDATIONS CONTRACTOR TO FIELD VERIFY WITH ON SITE SOIL CONDITIONS:
LIME'/2 TON/AC
PHOSPHATE 20-40 LBS/AC
POTASH 50-70 LBS/AC
WATERING REQUIREMENTS ONCE/WEEK IF NO RAIN
6. RIPARIAN SEED MIX ERNST CONSERVATION SEEDS PIEDMONT RIPARIAN SEED MIX OR APPROVED EQUAL BY DESIGNER. APPLICATION RATE 25 LBS/AC.
7. TEMPORARY SEED TO BE PLACED WITH PERMANENT SEED.
8. STABILIZATION MEASURES TO BE PLACED WITHIN THE LIMITS OF ALL DISTURBED AREAS. PLANTING AREAS SHOWN APPROXIMATE LIMITS OF DISTURBANCE.
PLANTING AND STABILIZATION PLAN
1 "=5'
SCALE 1 "=5'
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\ EXISTING WEIR 584.59 FT.
(TO BE REMOVED)
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EXISTING JB / NN
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EXISTING WEIR 583.52 FT.
/
(TO BE REMOVED),
1 BOULDER SILL
_ 2 BACKFILLED WITH CLASS \\ \ �`� \
\ \ \ EXISTING
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PROPOSED
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INV. OUT=582.47 FT. \ 'A�'Li� \ TYP.- 9 LOC
TOP OF WI,IR
EXISTING RIPRAP ,--583 - ' r\ -�583.16 IF �F \
,(TO BE REMOVED)
TOP OF WW \ \
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OPENING ELEV.=581.63 CONSTRUCTED I I I I I I
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STREAM CENTERLINE
- - - - RIGHT OF WAY
CLASS II RIPRAP
PLANTING ZONE A
PLANTING ZONE B
® SILL LOG
SF SF SILT FENCE
SS EXISTING SANITARY SEWER
BOULDER CROSS VANE
-583 PROPOSED CONTOURS
® PROPOSED SILL LOCATION
NOTES:
1. CONTRACTOR TO MAINTAIN AND IMPLEMENT EROSION CONTROL
MEASURES AS NEEDED TO PREVENT SEDIMENT DEPOSITION
DOWNSTREAM. PLACE SILT FENCE AS NEEDED.
2. TOTAL SITE BOULDERS:
ROCK CROSS VANE = 22
ROCK SILL AT 60" PIPE = 2
HEAD OF RIFFLE = 2
TOTAL = 26
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2 BOULDERS
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EXISTING STREAM AND PIPE INTERNAL PROFILE WITH PROPOSED IMPROVEMENTS
SCALE 1 "=10' HORIZONTAL
1 "=5' VERTICAL
2+30 2+40 2+50 2+60
600
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HORIZONTAL SCALE 1 "=10'
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DATE
10-15-2020
DRAWN BY
S. VANDERGRIFT
DESIGNED BY
B. WARD P.E.
CHECKED BY
B. WARD P.E.
SCALE
AS -NOTED
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JOB NO.
45762
SHEET NO.
1

1
4-5'
TOP ROCK
ELEVATION=582.66 FT.
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(TYP. BOTH SIDES)
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TOP ROCK ELEV.=583.0 FT.
7.5' WIDTH X. 7.5' WIDTH
INSTALL C-700 COCONUT FIBER BLANKETS 1
ON BANKS - SEE SECTION VIEW "B-B"
SEED WITH RIPARIAN MIX AND REPLANT
WITH WOODY VEGETATION
BOULDER CROSS VANE DETAIL
SEEDLING / LINER BAREROOT PLANTING DETAIL
HEALING IN
1. Locate a healing -in site in a shady, well
protected area.
2. Excavate a flat bottom trench
12" deep and provide drainage.
3. Backfill the trench with 2" well
rotted sawdust. Place a 2" layer of
2/7
well rotted sawdust at a sloping angle
at one end of the trench.
4. Place a single layer of plants
against the sloping end so that
the root collar is at ground level.
5. Place a 2" layer of well rotted
sawdust over the roots maintaining
a sloping angle.
6. Repeat layers of plants and sawdust
as necessary and water thoroughly.
1. Insert planting bar
as shown and pull handle
toward planter.
NOTES:
1. BOULDER SIZE, MINIMUM 2' x 3' x 1.5'.
2. ESTIMATE BOULDERS = 22 FT. FOR
CROSS VANE CONSTRUCTION.
INSTALL C-700
COCONUT FIBER BLANKETS
BEYOND FURTHEST DOWN STREAM
ROCK ON DISTURBED BANKS SEED
WITH RIPARIAN MIX AND REPLANT,
WITH WOODY VEGETATION
TOP ROCK ELEV 583.0 FT.
DIBBLE PLANTING METHOD
USING THE KBC PLANTING BAR
4. Pull handle of bar
toward planter, firming
soil at bottom.
PLANTING NOTES:
PLANTING BAG
Duringg planting, seedlings
shall be kept in a moist
canvas bag or similar
container to prevent the
root systems from drying.
2. Remove planting bar
and place seedling at
correct depth.
3. Insert planting bar
2" toward planter
from seedling.
5. Push handle forward 6. Leave compaction
firming soil at top. hole open. Water
thoroughly.
KBC PLANTING BAR
Planting bar shall have a
blade with a triangular
cross section and shall
be 12" long, 4" wide and
1" thick at center.
ROOT PRUNING
All seedlings shall be root
pruned, if necessary, so that
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(TYP. )
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TAPER ROCK FROM
BOTTOM OF TRENCH SLOPE 3HAV RIFFLE
END OF RIFFLE CLASS II
TO DEPTH "B" AT
2
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STREAM FLOW
PROPOSED
CHANNEL
A� CENTERLINE
RIFFLE
VARIES 4-5 FEET
TAIL LENGTH_
(TYP. )
EXISTING
CHANNEL
PLACE BOULDER AT HEAD OF RIFFLE
(ESTIMATED 2 - SEE MINIMUM SIZE DETAIL 1)
ITS ,I
i
BANKFULL
_ C-700 FABRIC LINE
BL TRENCH SIDES
PRIOR TO STONE PLACEMENT
- t IN AREAS OUTSIDE OF ROCK TOE
STONE MIX
SECTION VIEW "A -A"
NTS
TABLE 1.0 - CONSTRUCTED RIFFLE DIMENSIONS
Length "L"
Width "A"
Depth "B"
Class
(ft)
(ft)
(in)
11
13.5
4 to 5
24
TABLE 2.0 - CONSTRUCTED RIFFLE MIX
Riffle Mix Chart
Percent of Mix
NCDOT NCDOT
NCDOT
NCDOT
NCDOT
Riffle Class Boulder Class II Class I
Class B
Class A
457
Riprap Riprap
Riprap
Riprap
Stone
II
1%
65%
0%
30%
0%
5%
PROPOSED CONSTRUCTED RIFFLE
APPROVED SEDIMENT FILTERING
DEVICE (SEDIMENT FILTER BAG).
PROVIDE POSITIVE DRAINAGE FROM
SEDIMENT FILTER BAG TO STREAM.
DISCHARGE ONTO
STABLE RIPRAP PAD
TO PREVENT--$COUR H
FLOW SEDIMENT
DIKE
DISCHARGE HOS�
�-
DEWATERING PUMP
P
INTAKE HOSE
CLEAN
�- WATER DIKE
WORK AREA LENGTH NOT TO EXCEED
THAT WHICH CAN BE COMPLETED IN ONE DAY
STREAM DIVERSION PUMP
INTAKE HOSE
STREAMBANK
CSUMP-HOLE
FOR POOL
(12" TO 18" DEEP, 2-FT DIA.)
TEMPORARY PUMP AROUND SEQUENCE
1. SET UP PUMP WITH SUCTION AND DISCHARGE HOSE.
2. INSTALL UP -STREAM SANDBAG DAM.
3. INSTALL DOWN -STREAM SANDBAG DAM.
4. THE PUMP MUST RUN CONTINUOUSLY WHILE WORKING IN THE STREAM.
5. STREAMBANKS MUST BE STABILIZED AT THE END OF EACH DAY.
NOTES:
1. SANDBAG DIKES SHALL BE SITUATED AT THE UPSTREAM AND DOWNSTREAM ENDS OF THE WORK AREA, AND
STREAM FLOW SHALL BE PUMPED AROUND THE WORK AREA. THE PUMP SHOULD DISCHARGE ONTO A STABLE
VELOCITY DISSIPATER CONSTRUCTED OF RIPRAP OR SANDBAGS.
2. WATER FROM THE WORK AREA SHALL BE PUMPED TO A SEDIMENT FILTERING MEASURE SUCH AS A SEDIMENT BAG
OR OTHER APPROVED DEVICE. THE MEASURE SHALL BE LOCATED SUCH THAT THE WATER DRAINS BACK INTO THE
CHANNEL BELOW THE DOWNSTREAM SANDBAG DIKE WITHOUT CAUSING FURTHER EROSION BETWEEN THE
SEDIMENT FILTER BAG AND THE STREAM BANK.
3
LONGITUDINAL ANCHOR TRENCH
STAKE AT T-5"
\
INTERVALS
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TERMINAL SLOPE AND CHANNEL
ANCHOR TRENCH
CHECK SLOT AT 25'
INTERVALS (MIN)
ISOMETRIC VIEW
�G
4
FWOODEN STAKES
INITIAL CHANNEL ANCHOR TRENCH INTERMITTENT CHECK SLOT
NOTES:
1. CHECK SLOTS TO BE CONSTRUCTED AT 25' INTERVALS.
2. ALL MATTING TO BE SECURED WITH WOODEN STAKES ACCORDING TO
THE SPECIFICATIONS AT 5' INTERVALS.
3. FABRIC OVERLAP WHEN 2 ROWS OF MATERIAL ARE USED SHALL BE
PLACED WITH THE UPPER ROW OF MATERIAL PLACED OVER THE LOWER
ROW OF MATERIAL.
4. TRENCH MATTING AT TOP AND BOTTOM OF MAT AS SHOWN IN DETAIL
5. OVERLAP FABRIC IN DIRECTION OF FLOW WITH MATTING UPSTREAM ON
TOP OF DOWNSTREAM MAT.
6. MATTING WILL BE INSTALLED ACCORDING TO THE SPECIFICATIONS.
TYPICAL MATTING INSTALLATION
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CHECKED BY
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SCALE: NOT TO SCALE
01
TEMPORARY PUMP AROUND
JOB NO.
45762
SHEET NO.
2