HomeMy WebLinkAbout20200558 Ver 1_Design_2-12-2020-finalstamped-updated_20200424HENDERSON COUNTY SOIL & WATER CONSERVATION DISTRICT
N.C. COMMUNITY CONSERVATION ASSISTANCE PROGRAM
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STREAMBANK PROTECTION
& STABILIZATION
DAN TRUBEY
N INLE UP' CI,IEN'j
HENDERSON COUNTY, NORTH CAROLINA
COUNTY, 't _.-
�� w CONTENTS:
1. Title Sheet & Location Ma
2. Existing Grade
3. Proposed Grade
r 4. Planting Recommendations
5. =F Erosion Control
6. Bank Stabilization
•a SEAL
029344 =
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SITE LOCATION MAP
SCALE: NOT TO SCALE
APPROVED BY:
DATE:
PG 1
FLOW
UNI'
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Major Contour (2.5')
Minor Contour (0.5')
S01L & WATER HENDERSON COUNTY
SOIL AND WATER
CONSERVATION DISTRICT
• • e 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792
(828) 697-4949
DAN TRUBEY
CCAP - STREAMBANK RESTORATION
35.352606',-82.523279'
HENDERSONVILLE, NC HENDERSON
PLAN
COUNTY
e
029344 -
K. GO'
PROJECT Don Trubey
SCALE: 1 INCH - 20 FEET
DRAM BY: Belay K Gerwiq
DATE: 2/12/2020
CHECKED BY:
DATE:
SHEET NO. 2 OF 6
FILENAME: Trubey—Design—lo-2-12-2020.dwq
EXISTING
GRADE
FLOODPLAIP
BENCH
Minor Contour (U.S )
Cut/Fill
Name
Summary
Cut Factor
Volume -Final 1.000
Totals
OIL �c WATER HENDERSON COUNTY
SOIL AND WATER
CONSERVATION DISTRICT
• • e 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792
(828) 697-4949
Fill Factor 2d Area
1.000 18149.64 Sq. Ft.
18149.64 Sq. Ft.
DAN TRUBEY
CCAP — STREAMBANK RESTORATION PLAN
35.352606',—82.523279'
HENDERSONVILLE, NC HENDERSON COUNTY
Cut
112.01 Cu. Yd.
Fill
3.85 Cu. Yd.
orston
-eek
lit
l�
AL
029344 =
Net
108.15 Cu. Yd.<Cut>
112.01 Cu. Yd. 3.85 Cu. Yd. 108.15 Cu. Yd.<Cut>
REVISIONS
[NO. BY BAti DO"11aN
PROJECT: Dan Trubey
SCALE! 1 INCH - 20 FEET
DRANK BY: Belay K Gerwiq
DATE: 2/12/2020
CHECKED BY:
DATE!
SHEET NO. 3 OF 6
FILENAME: Trubey_DmIgn_1a_2-12-2020.dwq
PROPOSED
GRADE
Permanent Seeding Mixture: Per NC Wildlife Resources
Commission recommendations.Recommended Rate 25
Ibs/acre; Based on Ernest Seed list. Fescue and ryegrass
should make up 40-50% of mix. A minimim of 5
additional plants from list below should be included.
Plant Recommendation
Seeding Mix
Festuca rubra (Creeping Red Fescue)
Lolium multiflorum (Annual Ryegrass)
Carex vulpinoidea, PA Ecotype
(Fox Sedge, PA Ecotype)
Trifolium hybridum (Alsike Clover)
Lotus corniculatus, (Bird's Foot Trefoil)
Agrostis stolonifera (Creeping Bentgrass)
Chamaecrista fasciculata, PA Ecotype
(Partridge Pea, PA Ecotype)
Rudbeckia hirta, Coastal Plain NC Ecotype
(Blackeyed Susan)
Helenium flexuosum, VA Ecotype
(Purplehead Sneezeweed)
Chamaecrista nictitans, NC Ecotype
(Sensitive Pea)
Juncus tenuis, NC Ecotype (Path Rush)
Small Trees/Shrubs
Buttonbush
Southern Arrowwood
Tag Alder
Ninebark
Wild Azalea Red
Maleberry
Chokeberry
Mountain Winterberry
Swamp Azalea
Swamp Rose
Silky Willow
Meadowsweet
Silky Dogwood
Withe-rod
Yellowroot
Witch -hazel
Spicebush
American Hazelnut
Ferns
Wildflowers
Recommended Plantings:
All excavated and disturbed areas should receive the recommended seeding mix shown, expect the swing and bridge area. Around the bridge
bases and below swing, a low growing sedge and/or grasses (red creeping fescue) are recommended. Periodic mowing at a height of 4-6
inches is permitted. No woody vegetation should be planted in these areas. Recommended sedges are Pennsylvania sedge and
Plantain -leaved sedge. Sedges are best planted using plugs. Plant as recommended by nursery. Fertilizer and lime should be applied as
recommended and prior to installation of mulch and matting.
°
° All livestakes shall be planted at maximum spacing of 2' x 2' in alternating rows. Livestakes shall be installed along edge of stream on flood
15° ° bench. Where not bench is present, livestakes should be installed within 2' above water edge. A minimum of three (3) varieties from
livestakes from list shown shall be planted. The different varieties shall be randomly placed throughout the area. On the banks, container
10% trees and shrubs should be planted based on recommended spacing based on plant type. Plantings need to be sufficient to provide a dense
°
1 10% root system for all areas exposed to storm flows. *Due to location of power lines, tree heights must be restricted in some locations.
10% Mulching:
All excavated areas, including flood bench and graded slopes, should be mulched with dry, unchopped, unweathered small grain straw or hay
4% free of seeds of competing plants and an 100% biodegradable erosion control matting (North American Green SC-150BN or 770 gram coir
matting or equivalent) installed over the mulch. Matting shall be anchored with wood stakes in accordance with manufacturer's
2% specifications. All soil prep work should be completed prior to installation of erosion control matting. Any erosion control matting used should
be free of plastic or nylon mesh, as this type of mesh netting frequently entangles wildlife and is slow to degrade, resulting in a hazard that
2% may last for years.
1% All other disturbed areas should be mulched with dry, unchopped, unweathered small grain straw or hay free of seeds of competing plants.
1% Spread at the rate of 1-2 tons per acre depending upon the season. Evenly spread mulch over the area by hand or mechanical equipment.
Apply mulch uniformly so that no more than 25% of the ground surface is visible. Erosion control matting can be used to further stabilize
these areas.
List above is not exhaustive. Any native species can be
used if meets the criteria for being used under
powerlines and within riparian areas.
Lime & Fertilizer
Lime: 2,000 Ibs/acre (45 Ibs/1000 sqft) of finely ground, dolomitic
limestone
Fertilizer: 700 Ibs/acre (16 Ibs/1000 sgft) of 10-10-10 or equivalent
HENDERSON COUNTY
SOIL AND WATER
CONSERVATION DISTRICT
{can �Y Woo LoInI ftf 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792
(828) 697-4949
Work should be accomplished as quickly as possible and vigilance used in sediment and erosion control during site preparation, construction,
and clean up. Disturbed areas should be seeded, mulched and/or matted as soon as possible, preferably at the end of each work day. Work
should be performed from during low flows.
DAN TRUBEY
CCAP — STREAMBANK RESTORATION
35.352606%—82.523279'
HENDERSONVILLE, NC HENDERSON
PLAN
COUNTY
___ TREES (<15FT HIGH)
SHRUBS (3-6FT Hlr_u)
/ LIVESTAKES
WHERE FULL BENCH WHERE NARROW OR NO
IS DEVELOPED BENCH IS DEVELOPED
SEAL
1 029344 _
I(
y�zY-ZoZ�
PROJECT Don Trubey SCALE: NOT TO SCALE
DRANK BY: Betsy K Genlq DATE 4/24/2020 UPDATED PLANTING
CHECKED BY: DATE: R E C O M.
SHEET NO. 4 OF 6 FILENAME: Trubsy-Design-10-2-12-2020drq
TEMPORARY SILT FENCE DETAILS
Silt Fence should be installed as necessary along construction entrance, around stock piles, and down —slope of spoil deposition areas until vegetation
is established.
If eminent weather is expected or if construction activities will be suspended for more than 2 days, all excavated areas should be stabilized at the
tow of slope with silt fence or straw bales. Slopes and excavations should be stabilized as soon as possible under normal circumstances.
6' MAX.
WOVEN FILTER FABRIC
POST
_z
rFITELFABRIC (18" Above grade min)
R
LOW SLOPE
a ANCHOR SKIRT;
EXCAVATE TRENCH
AND COMPACT
BACKFILL Not to scale.
General Silt Fence Notes:
Woven filter fabric be used where silt fence is to remain for a period of more than 30 days. : �oF . 10y���
Posts shall extend past tops of fabric. Posts can be wood or steel. Turn silt fence up slope at ends. — .a SEAL T.
Drainage area can not be greater than 1 /4 acre per 100 ft of fence. = 029344
Do not install silt fence across streams, ditches, waterways or other areas of concentrated flow. '%mF `�'�ciNE`�`�'����`
s l 1KI 1111E��
Maintenance Notes:
— Filter barriers shall be inspected by the financially responsible party or his agent immediately after each rainfall and at least daily during prolonged
rainfall. Any repairs needed shall be made immediately.
— Should the fabric decompose or become ineffective prior to the end of the expected usable life and the barrier still is necessary, the fabric shall be
replaced promptly.
— Sediment deposits should be removed when deposits reach approx. half the height of the barrier. Any sediment deposits remaining in place after
the silt fence is removed shall be dressed to conform to the existing grade, prepared and seeded.
Cut Material: Approximately 100 cubic yards of soil will be removed to create a floodplain bench and stable slopes. The material can be spread on -site or exported offsite. Any material applied onsite must be above
any cut slopes and must be stabilized as a disturbed area. If cut material is temporarily stockpiled on -site, a silt fence must be installed to prevent material from washing into stream. See details above.
All disturbed areas will be seeded and covered with biodegradable matting as soon as possible. Additionally, various types of woody vegetation will also be installed. Silt fence will be installed around soil stockpiles. As
soil is spread up gradient, the areas will be reseeded and covered with straw. All disturbed areas will be stabilized as soon as possible.
Equipment will be kept out of the stream and will not cross the stream to access the work areas. Equipment will be inspected for leaks and maintained daily. Refueling will not occur within the work area.
OIL &WATER HENDERSON COUNTY
SOIL AND WATER
CONSERVATION DISTRICT
•i e 1.1 ; W111 I [Ole 0 e 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792
(828) 697-4949
DAN TRUBEY
CCAP - STREAMBANK RESTORATION PLAN
35.352606%-82.523279'
HENDERSONVILLE, NC HENDERSON COUNTY
REVISIONS
N0. BY DAII DE 1MMN
2
3
4
5
PROJECT: Don Trubsy
SCALE: NOT TO SCALE
DRAWN BY: Betsy K Gerwlq
DATE: 2/12/2020
CHECKED BY:
DATE:
SHEET NO. 5 OF 6
FlLENAME: Tmbey_DWgn_1a_2-12-2020 dwg
EROSION
CONTROL.
Material Specification
Erosion Control blanket shall be a
machine —produced 100% biodegradable mat
with an agricultural straw fiber matrix. The
blanket shall be of consistent thickness with
the straw evenly distributed over the entire
area of the mat. The blanket shall be
covered on the top and bottom sides with
100% biodegradable woven natural fiber
netting. The netting shall consist of machine
directional strands formed from two
intertwined yarns with cross directional
strands interwoven through the twisted
machine strands (commonly referred to as a
Leno weave) to form an approximate 0.50
inch x 1.00 inch (1.27 x 2.54 cm) mesh.
The blanket shall be sewn on 1.50 inch (3.81
cm) centers (50 stitches per roll width) with
biodegradable thread. The blanket shall be
manufactured with a colored line or thread
stitched along both outer edges
(approximately 2-5 inches (5-12.5 cm) from
the edge) to ensure proper material
overlapping.
The straw erosion control blanket shall be
S150 BN as manufactured by North American
Green, 700 gram coir matting, or equivalent.
The blanket shall have the following
properties:
Material Content
Matrix 100% Straw Fiber (0.50 Ibs/yd2) (0.27
kg/m2); Netting on both sides, Leno woven
100% biodegradable organic jute fiber (9.30
Ibs/1 ,000 ft2 [4.50 kg/100 m2] approximate
weight); Thread biodegradable
Physical Specifications (per roll)
Width 6.67 ft
Length 108.00 ft
Weight 53.50 Ibs
Area 80.00 yd2
Stitch Spacing 1.50 inches
A 700 gram coir matting that is 100%
biodegradable is acceptable with proper
seeding and mulch underneath matting.
�►C�IL & WATER HENDERSON COUNTY
SOIL AND WATER
fto
CONSERVATION DISTRICT
• • 61 TRIPLE SPRINGS ROAD, HENDERSONVILLE, NC 28792
(828) 697-4949
12"(30ell]
)
211_511
r ; (5-12.5cm)
l/11
1.
(15cm)
I Ed 11 -
I=1 5
01
.4 SEAL
' 029344
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Drawing Not To Scale
NORTH
AMERICAN
GREEN
5401 St. Wendel - Cynthiana Rd. PH: 800-722-2040
Poseyville, IN 47633 nii1N.nagreen.com
DAN TRUBEY
CCAP — STREAMBANK RESTORATION
35.352606%—82.523279'
HENDERSONVILLE, NC HENDERSON
Disclaimer:
The information presented herein is general design information only. For specific applications,
consult an independent professional for further design guidance.
PLAN
COUNTY
IIII�Illllll■_
Drawn on: 5-4-17
SHORELINE/
STREAMBANK
INSTALLATION
DETAIL
1. For easier installation, lower water level
from Level A to Level B before
installation.
2. Prepare soil before installing rolled
erosion control products (RECPs),
including any necessary application of
lime, fertilizer, and seed.
3. Begin at the top of the shoreline by
anchoring the RECPs in a 6"(15cm) deep
X 6"(15cm) wide trench with
' approximately 12"(30cn1) of RECPs
extended beyond the up -slope portion of
the trench. Anchor the RECPs with a
row of staples/stakes approximately 12"
(30cm) apart in the bottom of the trench.
Backfill and compact the trench after
stapling. Apply seed to the compacted
soil and fold the remaining 12"(30cm)
portion of RECPs back over the seed
and compacted soil. Secure RECPs
over compacted soil with a row of
staples/stakes spaced approximately
12"(30cm) apart across the width of the
RECPs.
4. Roll RECPs either (A) down the shoreline
for long banks (top to bottom) or (B)
horizontally across the shoreline slope.
RECPs will unroll with appropriate side
against the soil surface. All RECPs must
be securely fastened to soil surface by
placing staples/stakes in appropriate
locations as shown in the staple pattern
guide.
5. The edges of all horizontal and vertical
seams must be stapled with
approximately 2" - 5" (5-12.5cm) overlap.
Note: `In streambank applications seam
overlaps should be shingled in the
predominant flow direction.
6. The edges of the RECPs at or below
normal water level must be anchored by
placing the RECP's in a 12"(30cm) deep
X 6"(15cm) wide anchor trench. Anchor
the RECPs with a row of staples/stakes
spaced approximately 12"(30cm) apart in
the trench. Backfill and compact the
trench after stapling (stone or soil may be
used as backfill). For installation at or
below normal water level, use of
ShoreMax mat on top of the RECP or
geotextile may be recommended.
In loose soil conditions, the use of
staple or stake lengths greater than 6"
may be necessary to properly secure the
RECPs.
Bottom anchor trench can be
eliminated when using ShoreMax mat
over RECP along the bottom edge.
PROJECT: Dan Trubsy
SCALE: NOT TO SCALE
DRANN BY: Betsy K Gerwiq
DATE: 2/12/2020
CHECKED BY:
DATE:
SHEET NO. 6 OF 6
nLENAME: Tmbey_De9ign_1s1-12-2020dwq
BANK
STABILIZATION