HomeMy WebLinkAbout20230095 Ver 1_USACE Permit_20230627U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action Id. SAW-2023-00159 County: Forsyth U.S.G.S. Quad: NC -Rural Hall
GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION
Permittee: Sherwood West Association, Inc., c/o Cedar Management Group
Attn: Dennis Palmer
Address: 10610 Metromont Parkway, Suite 204
Charlotte, NC 28269
E-mail: antiguaman(&bellsouth.net
Size (acres) —6.61 Nearest Town Winston-Salem
Nearest Waterway UT to Mill Creek River Basin Upper Pee Dee
USGS HUC 03040101 Coordinates 36.12544,-80.321531
Location description: The pro*ect area is located in the Sherwood West townhome community along an existing stream reach
between Valley-10 Court and Moss Drive, in Winston Salem, Forsyth County, North Carolina.
Description of projects area and activity: This verification authorizes the permanent discharge of fill material into 0.015 acre (95
linear feet) of stream channel, necessary to re -align a portion of stream channel to protect existing multi-familv residential
infrastructure from an eroding stream bank.
Applicable Law(s): ® Section 404 (Clean Water Act, 33 USC 1344)
❑ Section 10 (Rivers and Harbors Act, 33 USC 403)
Authorization: Nationwide Permit 13. Bank Stabilization
SEE ATTACHED NWP GENERAL, REGIONAL, AND/OR SPECIAL CONDITIONS
Your work is authorized by the above referenced permit provided it is accomplished in strict accordance with the attached
Conditions, your application signed and dated 1/16/2023, additional information received via email on 2/27 and 4/15/2023, and
the enclosed plans "Sherwood West" "Retaining Wall and Stream Relocation" Sheets 1-8. Any violation of the attached
conditions or deviation from your submitted plans may subject the permittee to a stop work order, a restoration order, a Class
I administrative penalty, and/or appropriate legal action.
This verification will remain valid until the expiration date identified below unless the nationwide and/or regional general permit
authorization is modified, suspended or revoked. If, prior to the expiration date identified below, the nationwide and/or regional general
permit authorization is reissued and/or modified, this verification will remain valid until the expiration date identified below, provided
it complies with all requirements of the modified nationwide permit. If the nationwide and/or regional general permit authorization
expires or is suspended, revoked, or is modified, such that the activity would no longer comply with the terms and conditions of the
nationwide permit, activities which have commenced (i.e., are under construction) or are under contract to commence in reliance upon
the nationwide and/or regional general permit, will remain authorized provided the activity is completed within twelve months of the
date of the nationwide and/or regional general permit's expiration, modification or revocation, unless discretionary authority has been
exercised on a case -by -case basis to modify, suspend or revoke the authorization.
Activities subject to Section 404 (as indicated above) may also require an individual Section 401 Water Quality Certification. You
should contact the NC Division of Water Resources (telephone 919-807-6300) to determine Section 401 requirements.
For activities occurring within the twenty coastal counties subject to regulation under the Coastal Area Management Act (CAMA), prior
to beginning work you must contact the N.C. Division of Coastal Management.
This Department of the Army verification does not relieve the permittee of the responsibility to obtain any other required Federal, State
or local approvals/permits. If there are any questions regarding this verification, any of the conditions of the Permit, or the Corps of
Engineers regulatory program, please contact David E. Bailey at (919) 817-2436 or David.E.Bailey2(&usace.army.mil.
Corps Regulatory Official: Date: 06/27/2023
Expiration Date of Verification: 3/14/2026
SAW-2023-00159
SPECIAL CONDITIONS
1. Within one week of channel grading completion, the banks of the re -aligned channel (shown as the
"Proposed Channel" on Sheet 3 of the enclosed plans), must be stabilized with properly installed
coir matting and planted with live stakes of regionally appropriate native tree/shrub species, such
as black willow (Salix nigra) or silky dogwood (Corpus amomum) at a density of at least six-foot
spacing.
Corps Regulatory Official: Date: 06/27/2023
Expiration Date of Verification: 3/14/2026
The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we continue to do so,
please complete the Customer Satisfaction Survey located at hops://regulatory.ops.usace.army.miUcustomer-service-survey.
Copy furnished electronically:
Barry Nelson, Northwest Geoscience, P.A., anelson(atnorthwestgeoscience.com
Rebecca Chandler, NCDEQ-DWR, rebecca.chandlerndeq.nc.gov
Seren Homer, NCDEQ-DWR, seren.homer(?_deq.nc.gov
WINSTON-SALEM, NC
RETAINING I ]ALL AND STREAM RELOCATION
PROJECT NO. 22 -147 NOVEPABER 2022
INDEX TO PLAN SHEET
SHEET 1 TITLE SHEET .-
SHEET 2 EXISTING SITE PLAN �- �� y r-
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SHEET 3 FINAL BACKFILL AND GRADING CONTOURS RETAINING WALL Geoscience 0 _ .
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LOCATION AND CHANNEL RELOCATION
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SHEET 4 CROSS SECTION B & C .r *�_
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NC Geological Corporation License #442
SHEET 5 CROSS SECTION " D " & "Ell " & " -
" " PROJECT CONSULTANT/MANAGER • :'t ' „
SHEET 6 CROSS SECTION F G
NORTHWEST GEOSCIENCE P.C.
SHEET 7 LONGITUDINAL CROSS SECTION OF RETAINING WALL
AND DETAILS ��4 k_41_. .;' ,h M
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H E ET P ROJ ECT NOTE AND P E I F ICAT I N S 8 S S C O S � :�. s_� :.:.:. �, ,_
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- P.O. BOX 24487 4*. ; :• ;fir
Winston-Salem NC 27107
336.414.7011
PROJECT ENGINEER:
E.T. ENGINEERING
Scale in Feet
200 0 200
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P.O. Box 6418, High Point, NC 27262
www.northwestgeoscience.com
NC Geological Corporation License #442
ET ENGINEERING, P.A.
P.O. BOX 24487
Winston-Salem NC 27107
336.414.7011
LEGEND
PROJECT BOUNDARY
794-------------
Q 7
796 ---- ----
Q
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Q
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M
M
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0 ti
0+00 0+05
o SPOT ELEVATI❑N
CONTOUR LINE
----------- EDGE ❑E STREAM
TOP OF EXPOSED BAR
CL OF BAR
TOP OF BANK
PL PROPERTY LINE
PROJECT BOUNDARY
5
O
7W.52
TOP OF BANK 796
y--------------------- 789,54
0--------- BASE OF BANK 790
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795,53 /
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\ � 783,8 Manhole
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----- ---- 786,06 — — — — — — _ _ 783,7
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1 10785,9
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0+10 0+15 0+20 0+25 0+30 0+35
I
EDGE OF
BUILDING
Scale in Feet
5 0 5
\ 798,81
00
O
O
O
B
C
1
/
179 86
718,7
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10000.
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O
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0+40 0+45 0+50 0+55 0+60 0+65 0+70
Building Wall
EDGE OF
BUILDING
785,89
0791-11
I
= I Electric'
Pole
0+75 0+80 0+85 0+90
••
788,5
790
- 790
0+95 1+00 1+05 1+10 1+15
NOTE: PROJECT BENCHMARK IS TOP OF WATER METER
IN FRONT OF 3995A VALLEY C❑URT, ELEV,=800,00'
TOP ❑P EXISTING MANHOLE IS 793,20
SHERWOOD WEST
3995A Valley Ct Winston-Salem, NC
Existing Site Plan
PROJECT: Sherwood West
ADDRESS: 3995A Valley Ct
LOCATION: Winston—Salem, NC
NWGEO PROJECT NO: 22-147
SCALE: 1 "=5' APPROVED BY: JMR
DATE: 11 /22 DRAWN BY: ABN
SHEET 2
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P.O. BOX 24487
Winston-Salem NC 27107
336.414.7011
LEGEND
o SPOT ELEVATI❑N
CONTOUR LINE
-- — — — — — — — — —
— EDGE OF STREAM
---p----p-
TOP OF EXPOSED BAR
----x----x--
CL OF BAR
TOP OF BANK
PROPERTY LINE
PL
CL OF WALL
-- — — — — — — — — —
— WALL E❑❑TER
----
PROPOSED CHANNEL
o
SEWER MANHOLE
--------------
FALL PR❑TECTI❑N EENCING
— — — — — — — — —
— SECURITY EENCING
PROJECT BOUNDARY
q9-Sb
TEMPORARY ROCK CHECK DAM
TREE CLEARING AREA
EQUIPMENT & STAGING AREA
i ,� I i i i i
787.05 �
\
796-05 \
\
\ 784.4 786.11 _ — ' / I �/ O/ 783.E /r-
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i
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\ / Manhole \ 783,8 �790,07
783.7
3I I.,
786.06 7 ,7----�6.37 r
—
0+05 0+10 0+15 0+20 0+25 0+30 0+35 0+40 0+45
EDGE OF
BUILDING
Scale in Feet
5 0 5
Building Wall
0+50 0+55 0+60 0+65
INSTALL WALL PR❑TECTI❑N
0+70
EDGE OF
BUILDING
I LIvII-'LJKHK Y KLJI.K
CHECK DAM
0+75 0+80 0+85 0+90 0+95 1+00 1+05 1+10
NOTE: PROJECT BENCHMARK IS TOP ❑E WATER METER
IN FRONT OF 3995A VALLEY COURT, EL-EV,=800,00'
TOP OF EXISTING MANHOLE IS 793,20
SHERWOOD WEST
3995A Valley Ct Winston-Salem, NC
Final Backfill and Grading Contours
Retaining Wall Location and Channel
Relocation
9
1 +15
PROJECT: Sherwood West
ADDRESS: 3995A Valley Ct
LOCATION: Winston—Salem, NC
NWGEO PROJECT NO: 22-147
SCALE: 1 "=5' I APPROVED BY: JMR
DATE: 11 /22 1 DRAWN BY: ABN
SHEET 3
800
799
798
797
796
795
794
793
792
791
W 790
O 789
d
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W
787
786
785
784
783
782
781
780
B 779
0+00 0+5 0+10 0+15 0+20 0+25 0+30 0+35
Distance From Baseline (Ft)
Section B
STA 0+45
SEE SHEET 3 FOR L❑CATI❑NS
5X VERTICAL EXAGGERATI❑N
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PC
P.O. Box 6418, High Point, NC 27262
www.northwestgeoscience.com
NC Geological Corporation License #442
ET ENGINEERING, P.A.
P.O. BOX 24487
Winston-Salem NC 27107
336.414.7011
0+40 0+45
0+50 0+55 0+60 0+65 0+70
M
B'
0+75
800
799
798
797
796
795
794
793
792
791
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787
786
785
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782
781
780
C 779
0+00
BANK
..-
C,
0+5 0+10 0+15 0+20 0+25
0+30
0+35 0+40 0+45 0+50
0+55 0+60 0+65 0+70
Distance
From Baseline
(Ft)
CONSTRUCTION OF WALL TO USE DIMENSIONS AS SHOWN
Scale in Feet
5 0 5
SHERWOOD WEST
N'` 3995A Valley Ct Winston-Salem, NC
Section C
STA 0+54
Final Backfill and Grading
Contours Retaining Wall Location
and Channel Relocation
PROJECT: Sherwood West
ADDRESS: 3995A Valley Ct
LOCATION: Winston—Salem, NC
NWGEO PROJECT NO: 22-147
SCALE: 1 "=5' APPROVED BY: JMR
DATE: 11 /22 DRAWN BY: ABN
SHEET 4
800
799
798
797
796
795
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793
792
791
L.�
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790
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788
787
786
785
784
783
782
781
780
D 779
0+00
0+5 0+10 0+15 0+20 0+25 0+30 0+35
Distance From Baseline (Ft)
Section D
STA 0+67
0+40 0+45
0+50 0+55 0+60 0+65
D'
0+70
800
799
798
797
796
795
794
793
792
791
11
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787
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782
781
780
E 779
0+00
E'
0+5 0+10 0+15 0+20 0+25 0+30 0+35 0+40 0+45 0+50 0+55 0+60 0+65 0+70
Distance From Baseline (Ft)
Section E
STA 0+79,5
SEE SHEET 3 FOR L❑CATI❑NS CONSTRUCTION OF WALL TO USE DIMENSIONS AS SHOWN
5X VERTICAL EXAGGERATI❑N
PROJECT: Sherwood West
AGeooscrthwest ience eADDRESS: 3995A Valley Ct
PC SHERWOOD WEST Final Backfill and Grading
LOCATION: Winston—Salem, NC
Scale in Feet
P.O. Box 6418, High Point, NC 27262
www.northwestgeoscience.com I Contours RetainingWall Location NWGEO PROJECT N0: 22-147
NC Geological Corporation License #442 I
5 ° 5 ' 3995A Valle Ct Winston-Salem, NC
ET ENGINEERING, P.A. �/ SCALE: 1 =5 APPROVED BY: JMR
P.O. BOX24487 and Channel Relocation DATE: 11/22 DRAWN BY: ABN
Winston-Salem NC 27107
336.414.7011
SHEET 5
796
795
794
793
792
791
790
789
� 788
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O 787
d
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W
785
784
783
782
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F 779
0+00
SEE SHEET 3 FOR L❑CATI❑NS
5X VERTICAL EXAGGERATI❑N
Zff:Northwest
eoscience
PC
P.O. Box 6418, High Point, NC 27262
www.northwestgeoscience.com
NC Geological Corporation License #442
ET ENGINEERING, P.A.
P.O. BOX 24487
Winston-Salem NC 27107
336.414.7011
&IA V
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J
W
Z
Z
Q
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0+5 0+10 0+15 0+20 0+25 0+30 0+35
Distance From Baseline (Ft)
Section F
STA 0+85
--- Mr BANK
F/
0+40 0+45 0+50 0+55
795
794
793
792
791
790
789
�-. 788
787
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W
785
784
783
782
781
780
G 779
0+00
0+5 0+10 0+15 0+20 0+25 0+30 0+35
Distance From Baseline (Ft)
Section G
CONSTRUCTION OF WALL TO USE DIMENSIONS AS SHOWN
Scale in Feet
5 0 5
SHERWOOD WEST
N'` 3995A Valley Ct Winston-Salem, NC
0+40 0+45
Final Backfill and Grading
Contours Retaining Wall Location
and Channel Relocation
G'
0+50 0+55
PROJECT: Sherwood West
ADDRESS: 3995A Valley Ct
LOCATION: Winston—Salem, NC
NWGEO PROJECT N0: 22-147
SCALE: 1 "=5' APPROVED BY: JMR
DATE: 11 /22 DRAWN BY: ABN
SHEET 6
f
Table 8,1
GENERAL NOTES:
1. Project Boundaries. The project will take place in an area of limited space. The project boundaries are shown on plan sheet 2.
The limits of the project boundaries will be staked and flagged at the site by the ENGINEER prior to commencement of
construction activities.
2. Equipment Storage and Materials Staging Areas. An area within the project boundary has been established for temporary storage
of equipment and materials. This area is shown on plan sheet 3 and will be staked and flagged at the site by the ENGINEER prior
to commencement of construction activities. No storage of equipment or materials shall take place in the road and parking areas.
3. Protection of Existing Building. The project work will take place very close to the existing building at 3939 A Valley Court. Before
construction begins, suitable blanket type materials shall be temporarily attached to the south facing wall. The protection will
extend along the entire width of the wall and to a height of 10 feet above ground.
4. Fall Protection Fences. The CONTRACTOR shall furnish and install a fall protection fence shall be placed along the southern
embankment of the stream as shown on plan sheet 3.
5. Security Fencing. In order to secure the project site from the public, the CONTRACTOR shall furnish and install a fall protection
fence beginning at the southeast corner of 3939 A Valley Court, extending to the sidewalk, making a 90 degree turn and follow the
curb to a point 75 feet from the building, ending at a point along the southern stream bank. Signage shall state "Construction
Area -Do Not Enter". The Location is shown on plan sheet 3.
6. Construction of Temporary Equipment access to stream. The stream channel will be accessed by a temporary path. The location
of the temporary access corridor is shown on plan sheet 7. The ENGINEER shall stake the centerline of this corridor prior to
construction. The maximum width of the corridor shall not exceed 15 feet. Heavy equipment to be used in the stream channel
shall not deviate from this access corridor. If needed, a geotextile can be placed directly on the ground surface and a 6-inch
thickness of crusher run placed over the geotextile to minimize damage to the access corridor during inclement weather.
7. Disposal of Waste Materials and Debris. All non -vegetative materials and debris shall be removed from the project site at the end
of each day by the CONTRACTOR.
8. Excavated Materials. All soil, gravel and sand excavated to form the new stream channel shall be used as backfill in the existing
stream channel.
PROJECT CONSTRUCTION SEQUENCE
• Remove flagged trees along the eastern streambank within the project boundary. All materials shall be mulched on -site.
• Install all fall protection and security fencing.
• Install the wall protection blankets.
• Construct the temporary access corridor.
• Install erosion control elements as shown on plan sheet 3.
• Excavate the new trapezoidal channel as per the cross-section shown on plan sheet 7. Place the excavated material in the
existing stream channel.
• Excavate the wall fin and footing. Place the excavated material in the existing stream channel and between the footing
excavation and the eastern stream bank. Should excessive water be encountered during excavation, it shall be pumped to a
point where the natural channel is encountered below the limits of the footing excavation.
• A separate CONTRACTOR will remove the existing sewer manhole and replace with a new manhole and piping.
• Install concrete forms in the fin and footing.
• Install rebar in the fin and footing.
• Pour the concrete for the fin and footing. A concrete truck and boom shall be set up in the parking lot and the concrete boomed
to the fin and footing.
• Construct the retaining wall forms.
• Install the water control measures behind the wall forms.
• Install the wall rebar in the forms.
• Pour the concrete for the retaining walls.
• Remove the wall forms.
• Excavate, haul and place engineered fill between the retaining wall and the existing embankment.
• Seed and mulch the fill.
• Remove all erosion control measures, fencing, and wall protection blankets.
• Restore any area of the grounds and yards that were damaged during construction.
PROJECT SPECIFICATIONS
Division 1.0 Clearing and Grubbing
1.1. Scope
The work consists of clearing and grubbing and disposal of trees, snags, logs, brush, stumps, shrubs, and rubbish from the designated areas.
1.2. Protection of existing vegetation
Trees and other vegetation designated to remain undisturbed shall be protected from damage throughout the duration of the construction
period. Any damages resulting from the contractor's operations or neglect shall be repaired by the contractor.
Earthfill, stockpiling of materials, vehicular parking, and excessive foot or vehicular traffic shall not be allowed within the drip line of
vegetation designated to remain in place. Vegetation damaged by any of these or similar actions shall be replaced with viable vegetation of
the same species, similar condition, and like size unless otherwise approved by the contracting officer.
Any cuts, skins, scrapes, or bruises to the bark of the vegetation shall be carefully trimmed and local nursery accepted procedures used to
seal damaged bark.
1.3. Marking
The limits of the area(s) to be cleared and grubbed will be marked by stakes, flags, tree markings, or other suitable methods by the
ENGINEER. Trees to be left standing and uninjured will be designated by special markings placed on the tree limbs about 6 feet above the
ground surface.
1.4. Clearing and grubbing
All trees not marked for preservation and all snags, logs, brush, stumps, shrubs, rubbish, and similar materials shall be cleared from within
the limits of the project in the existing stream. Unless otherwise specified, all stumps, roots, and root clusters that have a diameter of 1 inch
or larger shall be grubbed out to a depth of at least 2 feet below subgrade in the area of the fin and footing of the concrete retaining wall and 1
foot below the ground surface at embankment sites and other designated areas.
1.5. Disposal
All materials cleared and grubbed from the designated areas shall be hauled from the site and disposed of by the CONTRACTOR. The
CONTRACTOR is responsible for complying with all local rules and regulations and the payment of any and all fees that may result from
disposal at locations away from the project site.
Division 2.0 Excavation
2.1 Designated Areas
Excavation shall be limited to the area of the new stream channel and the retaining wall footing. No excavation shall take place outside the
stream banks. All materials excavated during construction of the new stream channel shall be placed in the existing stream channel. After
the channel is filled, additional excavated materials shall be placed in the area behind the retaining wall footing and spread to equal
elevations.
2.2 Dewatering
During excavation of the fin and footing, excess water shall be removed by pumping to facilitate construction of the forms, installation of the
rebar and pouring of the concrete. The water shall be disposed of at a point in the existing stream below the newly constructed channel.
2.3 Foundation Bearing Pressure
A bearing pressure of 2,500 psf. was assumed for the foundation.
I� . � �11��C�1�1i .�aL•9i
3.1 Location and Materials
A construction corridor has been established for the new channel as shown on Plan Sheet 7. A trapezoidal shaped channel shall be
constructed within this corridor with dimension shown on Plan Sheet 7. The earth materials within the corridor are predominately sand and
gravel. Excavated materials shall be handled as specified in Division 2.1.
3.2 Shape
The new channel may include slight meanders within the corridor to mimic natural conditions. The slope of the bottom of the channel shall be
positive in the downstream direction.
3.3 Channel Cutting
In order to provide the correct grade of the bottom of the channel, excavation shall begin at the downstream end and move upstream. The
upstream termination point shall join the existing stream at the same elevation. No potholes or pools shall be formed within the new channel.
AGeosciencee
orthwest
PC
t_
P.O. Box 6418, High Point, NC 27262
www.northwestgeoscience.com
NC Geological Corporation License #442
ET ENGINEERING, P.A.
- _ P.O. BOX 24487
Winston-Salem NC 27107
336.414.7011
Division 4.0 Footina Forms
4.1 Materials
Following excavation of the fin and footings for the retaining wall, concrete forms will be constructed in the excavation. The materials
to be used for the forms shall be untreated pine 2 x 4's, % inch plywood and wooden stakes that can be easily removed following curing
of the concrete.
4.2 Disposal
Upon removal, the forms shall be removed from the site and disposed of off -site in compliance with local regulations covering
construction and demolition debris.
Division 5.0 Retainina Wall Forms
5.1 Materials
Materials for the retaining walls shall be new 2x4s and % inch plywood sheets or pre -fabricated metal forms.
5.2 Construction
The wall forms shall be constructed above the concrete footing after it has been poured and cured.
5.3 Removal
The retaining wall forms shall remain in -place for 48 hours following the concrete pour. Pre -fabricated metal forms shall be removed
and placed on trailers for removal. Wooden forms shall be removed and disposed of in compliance with local regulations governing
disposal of construction and demolition materials.
Division 6.0 Enaineered Backfill
6.1 Selection and Source
The CONTRACTOR shall provide a five -gallon bucket of the proposed engineered backfill to the ENGINEER for testing and approval.
The source of the fill shall be designated.
6.2 Suitability
Soils suitable for engineered fill shall be clean, free of organic materials, contain no hazardous materials, and have Unified Soil
Classifications MIL, CL, SC, or SC.
6.3 Placement and Compaction
Engineered fill shall be placed between the new concrete retaining wall and the existing stream bank adjacent to the building.
Placement will utilize a track -hoe to remove the fill from dump trucks and gently dump the fill from the track -hoe bucket. Extreme care
must be taken to prevent hitting the building and the new retaining wall with the bucket. The fill will be placed in 8-inch lifts and
compacted with the track -hoe bucket and rammer. The ENGINEER shall approve placement of each additional lift after compaction.
Division 7.0 Retaining Wall Drainage System
7.1 Description
A horizontal drain shall be constructed behind the concrete retaining wall just above the footing prior to backfilling. The drain will
entail a 4-inch diameter corrugated plastic pipe with 1/2-inch holes along the top encased in a 1 foot by 1 foot envelope of washed #57
stone. The washed stone envelope will be shrouded by a geotextile filter fabric to prevent intrusion of back fill. The lower end of the
drain will emerge from the extension of the wall into natural ground and discharge to the channel.
7.2 Materials
The 4-inch diameter single wall corrugated plastic pipe shall comply with ASTM F2986-12 or equivalent. The geotextile filter shall be a
non -woven fabric such as Hanes Geo Components Terra Tex SD or equivalent. The washed #57 stone shall be equal to ASTM C 33
stone.
7.3 Installation
Installation of the drainage system shall take place after the concrete retaining wall has been poured and all the wall forms removed.
The geotextile shall be laid on the base of the footing on the inside of the retaining wall (between the wall and the near bank). A
three-inch layer of #57 stone shall be placed on the geotextile extending from the back of the wall to the edge of the footing. The
corrugated plastic pipe shall be laid on the layer of #57 stone with the holes pointing upward along the top of the pipe. Additional #57
stone shall be placed on the pipe so that a 1-foot envelope of stone surrounds the corrugated plastic pipe. The geotextile shall then be
wrapped around the stone and folded over the top.
Division 8.0 Rebar
8.1 Materials
Rebar shall conform to the table located on the right hand side of this sheet:
Division 9.0 Concrete
9.1 Materials
Concrete shall comply with the requirements in the table located on the right hand side of this sheet:
Concrete to be used in the fin and footings shall utilize 3000 psi hydraulic cement. Concrete to be used in the retaining wall shall be 3000 psi. The
concrete for the footings shall conform to a consistency class of S4. The concrete for the retaining wall shall conform to a consistency class of S3.
Concrete compaction shall use either a poker or beam vibration and/or tamping.
Division 10.0 Seeding and Mulching
10.1 Area for Seeding
The fill area behind the retaining wall and any portion of the existing yard disturbed by construction activities shall be permanently seeded.
10.2 Materials
Seed shall be Serica Lespedeza applied at a rate of 15 Ibs/acre with a broadcast spreader. Fertilizer shall be Scott's Turf Builder Triple Action
Starter Fertilizer with a N-P-K ratio of 24-25-4 or equal. The fertilizer shall be applied at a rate of 100 pounds per acre. Erosion control blankets
conforming to American Excelsior or equivalent shall be placed over the seeded area and held in place by steel staples.
10.3 Soil Preparation
The soil shall be tilled to a depth of 4-inches to facilitate seed germination. All stones greater than one inch, sticks, roots and other extraneous
materials that surface during soil preparation shall be removed.
Division 11.0 Erosion Control
11.1 Temporary Check Dam
Prior to any clearing or excavation in the stream channel, a temporary rock check dam shall be installed at the location shown on the plans. The
check dam shall extend across the width of the entire channel from high bank to high bank. The check dam shall have a bottom width two feet and a
height of one foot. The check dam shall consist of 6-inch diameter rip -rap.
11.2. Silt Fence
A silt fence shall be installed on the lower side of the temporary stream access corridor as shown on the plans. The silt fence materials and
installation methods shall comply with the latest North Carolina Department of Energy, Mineral and Land Resources Erosion and Sediment Control
Manual.
Division 12.0 Site Restoration
12.1 Requirements
• Following final inspection and approval of all work by the ENGINEER, the CONTRACTOR shall remove all construction debris, trash, fall
protection fencing, wall protection blankets and any other temporary materials. The temporary access corridor to the stream shall be
restored by removing any stone and geotextile. Any damage and erosion to the corridor shall be restored by seeding and mulching in
compliance with Division 10 above. Any erosion control devices or materials placed in the stream channel shall be removed.
SHERWOOD WEST
3995A Valley Ct Winston-Salem, NC
Table 9,1
BAR SIZE
WEIGHT
BAR
CRvss Ws CT AREA= IN E PER FT
DESIGNATION'
(.LBSIFCOT)
DIAMETER
I AT 12" C.C.
AT 6" C.C.
INCHES
# 3
0.376
0.375
0.11
0.22
0.668
0.500
11M
0.40
#S
1A43
0.625
0.31
0.62
11+8
1.W2
0.750
0.A4
0.88
#7
2.044
0.875
0.50
1.211)
6S
2.870
3.400
1.000
1.138
0.79
1.00
7.58
*9
2M
2„U
#10
4.303 1.270 1.27
#11
5.313
1.410
1.56
&12
4.50
# 14
7.650 1.693 2.25
#18
13.600
2.257
4.00
8.80
Class of I Description of Usage
Concrete
R - 1 Footings
R - Z Foundation walls. grade
---- - --
R - 3 Interior slabs on ground
Garage floors, walkways.
C-2 driveways, porches, steps,
oatios
Concrete Pe = 3000 psi
Rebar Fy = 60000 psi
Unit Weight = 150 Ib1R3
Maximum W/CM
Ratio
1-2 75 1� -3 75 f1�
7.5
0.70
0.70
0."
0.45
N
N
A
Heel Bars: #5 @ 12 in
Toe Bars: #5 C 12 in
Footing SIT Bars: #5 @ 12 in
Minimum 28 D
Compressive
Strength (MPa)
15
15
0
32
#5 [7a 12 in (S &T)
47 [7a 12 in
PI *.)J&CT NOTES NI:)
SPECIFICATIONS
Plastic Air Content
(%)
3-6
4-7
WA
PROJECT: Sherwood West
ADDRESS: 3995A Valley Ct
LOCATION: Winston-Salem, NC
NWGEO PROJECT NO: 22-147
SCALE:
NA
APPROVED
BY: JMR
DATE:
11/22
DRAWN BY:
ABN
SHEET 8
Action ID Number: SAW-2023-00159
County: Forsyth
Permittee: Sherwood West Association, Inc., c/o Cedar Management Group, Attn: Dennis Palmer
Project Name: Sherwood West townhomes / stream realignment / 3995 A Valley Court / Winston Salem
Date Verification Issued: 06/27/2023
Project Manager: David E. Bailey
Upon completion of the activity authorized by this permit and any mitigation required by the permit,
sign this certification and return it to the following address:
US ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Attn: David E. Bailey
Raleigh Regulatory Office
U.S Army Corps of Engineers
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
or
David.E.Bailey2@usace.army.mil
Please note that your permitted activity is subject to a compliance inspection by a U. S. Army Corps of
Engineers representative. Failure to comply with any terms or conditions of this authorization may
result in the Corps suspending, modifying or revoking the authorization and/or issuing a Class I
administrative penalty, or initiating other appropriate legal action.
I hereby certify that the work authorized by the above referenced permit has been completed in
accordance with the terms and condition of the said permit, and required mitigation was completed in
accordance with the permit conditions.
Signature of Permittee
Date