HomeMy WebLinkAbout20210403 Ver 1_USACE Permit_20220324U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action ID. 2021-00224 County: Buncombe
GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION
Permittee: Windsor Built Homes, Inc. / Attn: Scott Street
Address: 40 West Broad Street, Suite 500
Greenville, SC 29601
Telephone Number: 864-370-9037
Location description: The project site is located at 305 Brooks Cove Road, in Black Mountain, Buncombe County,
North Carolina. Coordinates are: 35.623738 -82.302819
Description of projects area and activity: This permit verification authorizes the installation of two road crossings to
access a residential development. Impacts authorized total 0.05 acre of wetlands and 177 linear feet (0.019 acre) of
stream channels. Special Conditions:
1) In -stream work is prohibited from January 1 to April 15 to protect trout spawning per recommendation from
the North Carolina Wildlife Resource Commission (attached).
2) Adjacent/undisturbed wetland areas to the proposed impact areas should be clearly demarcated with
protective fencing prior to and during construction activities and remain in -place until permitted activities
has been completed and a compliance inspection has been conducted by the Corps project manager.
Applicable Law: ® Section 404 (Clean Water Act, 33 USC 1344)
❑ Section 10 (Rivers and Harbors Act, 33 USC 403)
Authorization: Regional General Permit Number or Nationwide Permit Number: NWP 29
SEE ATTACHED RGP or NWP GENERAL, REGIONAL AND SPECIAL CONDITIONS
Your work is authorized by the above referenced permit provided it is accomplished in strict accordance with the
attached conditions, above noted special conditions, and your submitted application and attached information dated
January 14, 2022 and February 9, 2022. 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/regional authorization is
modified, suspended or revoked. If, prior to the expiration date identified below, the nationwide/regional 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/regional permit. If the nationwide/regional 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/regional permit, activities which have commenced (i.e., are under construction) or are under contract to commence
in reliance upon the nationwide/regional permit, will remain authorized provided the activity is completed within twelve months
of the date of the nationwide/regional 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.
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 Amanda Jones at 828-271-7980, ext. 4225 or amanda.jones@usace.army.mil.
Corps Regulatory Official:
nda Jones
Expiration Date of Verification: March 15, 2026
CF: ClearWater Environmental Consultants, Inc., Attn: Clement Riddle
Date: March 24, 2022
Action ID Number: 2021-00224 County: Buncombe
Permittee: Windsor Built Homes, Inc. / Attn: Scott Street
Project Name: Brooks Cove Road / NWP #29
Date Verification Issued: March 24, 20222
Project Manager: Amanda Jones
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.: Amanda Jones
151 Patton Avenue, Room 208
Asheville, North Carolina 28801-5006
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
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 our Customer Satisfaction Survey, located online at
https://regulatory.ops.usace.army mil/customer-service-survey/
4
North Carolina Wildlife Resources Commission
Cameron Ingram, Executive Director
January 19, 2022
Ms. Crystal Amschler
U.S. Army Corps of Engineers, Regulatory Branch
151 Patton Avenue, Room 208
Asheville, North Carolina 28801-5006
SUBJECT: Brooks Cove Road
UT to Swannanoa River and wetlands, Buncombe County
Dear Ms. Amschler:
Biologists with the North Carolina Wildlife Resources Commission (NCWRC) reviewed an
application to culvert 177 ft of an unnamed tributary (UT) to the Swannanoa River and fill 0.053
acre of wetland in Buncombe County. Our comments on this application are offered for your
consideration under provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et. seq.) and Fish
and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d).
Wild Rainbow Trout are found downstream of the project, and instream activities should be
avoided between January 1 and April 15 to minimize impacts to trout reproduction. In addition,
Eastern Hellbender (Cryptobranchus alleganiensis, US Federal Species of Concern, NC Special
Concern) is found in the Swannanoa River. Excellent erosion and sediment control are necessary
to minimize impacts to these sensitive species.
Reinforced concrete pipe (RCP) culverts are proposed on two stream crossings. We recommend
against RCP, as this smooth material is less likely to hold stream substrate and provide for
movement of aquatic organisms like fish and salamanders. We recommend maintaining a buffer
of at least 30 ft on the stream to provide shade and ensure streambank stability.
We offer the following recommendations to minimize impacts to fish and wildlife:
1. In -channel 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. A native riparian seed mix and native shrubs and trees should be used to
permanently stabilize disturbed stream areas.
Mailing Address: Habitat Conservation • 1721 Mail Service Center • Raleigh, NC 27699-1721
Telephone: (919) 707-0220 • Fax: (919) 707-0028
Brooks Cove Road Page 2 January 19, 2022
UT Swannanoa R, Buncombe Co.
2. Any erosion control matting used should be free of plastic or nylon mesh, as this type of
mesh frequently entangles wildlife and is slow to degrade, resulting in a hazard that may last
for years.
3. In -stream activities should be avoided between January 1 and April 15 in order to minimize
impacts to wild trout reproduction.
4. The proposed culvert would be RCP material. We recommend against using RCP or HDPE
material, as this material is less likely to hold stream substrate and provide for movement of
aquatic organisms like fish and salamanders.
5. We recommend maintaining a buffer of at least 30 ft on the stream to provide shade and
ensure streambank stability.
6. Limit impervious surface to less than 10% or use stormwater control measures to mimic the
hydrograph consistent with an impervious coverage of less than 10%.
7. Use non-invasive native species and Low Impact Development (LID) technology in
landscaping. Using native species instead of ornamentals should reduce the need for water,
fertilizers and pesticides. Using LID technology in landscaping will not only help maintain
the predevelopment hydrologic regime, but also enhance the aesthetic and habitat value of
the site.
8. Limit native vegetation clearing as much as possible. Maintain open space areas with native
vegetation and maintain the undeveloped area to the north as a forested green space.
Thank you for the opportunity to review and comment on this project. Please contact me at
(828) 400-4223 if you have any questions about these comments.
Sincerely,
Andrea Leslie
Mountain Region Coordinator, Habitat Conservation Program
ec: Britten Yant, Clearwater Environmental
Andrew Moore, NC Division of Water Resources
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(79 LF, 388 SF AREA)
PROPOSED WETLAND IMPACT 4 (596 SF)
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NOTE: STREAM IMPACT AREAS ARE MEASURED
FROM THE TOPS OF BANKS AND THE
PROPOSED LIMITS OF GRADING.
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BROOKS COVE
STREAM IMPACT MASTER BULLETIN
FEBRUARY 2022
N OprN
0
30
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/
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PROPOSED STREAM IMPACT 1
(98 LF, 443 SF AREA)
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`S' V.:2423.4'
—�I V.: 242 I.9'
EXISTING TOP
OF BANK (TYP)
cp Civil
Design
Concepts, PA
NCBELS #: C-2184
EXISTING STREAM "SOUTH"
EXISTING STREAM
BUFFER (TYP)
INSTALL TEMPORARY SANDBAG WALL FOR STREAM
DIVERSION DURING HEADWALL AND BYPASS PIPE
INSTALLATION (SEE DETAIL D3.02)
2432
2430
NOTE: STREAM IMPACT AREAS ARE MEASURED
FROM THE TOPS OF BANKS AND THE
PROPOSED LIMITS OF GRADING.
PROPOSED BYPASS PIPE (SEE DETAIL D3.02)
PROPOSED STORM
SYSTEM (TYP)
PROPOSED PERMANENT 42" HDPE DOUBLE
PIPE CULVERT STREAM CROSSING.
2440 —2440
2430—
HDPE®2.6%
2420-
2410—
m
U
N
m
U
d-
aD N
aim
N
0 + d
N
d
c Q 0
0 Iz
0
0
FINISHED GRADE
PROPOSED STORM CROSSING
m
U
m
0
EXISTING GRADE
2420
2410
2400 ' 2400
o o ,-
o 0
o+ + +
THE 42-INCH HDPE PIPES SHALL BE INDIVIDUALLY WRAPPED IN FILTER
CLOTH. THE PIPE INVERT IS TO BE FITTED WITH "FLEXI BAFFLE"
CULVERT BAFFLES BY S. SCOTT AND ASSOCIATES, OR APPROVED
EQUAL, AND INSTALLED PER MANUFACTURER'S STANDARDS. THE
BAFFLES SHALL BE INSTALLED AT 8-FOOT SPACING AND NO CLOSER
THAN 4 FEET TO A PIPE JOINT OR END. THE BAFFLES ARE TO BE
ATTACHED TO THE HDPE INVERT BETWEEN THE CORRUGATIONS WHERE
THE FULL WALL THICKNESS IN PRESENT.
CULVERT 3
BROOKS COVE STREAM IMPACT 1
IMPACT BULLETIN
FEBRUARY 2022
N OprN
I
THE 42-INCH HDPE PIPES SHALL BE INDIVIDUALLY WRAPPED IN FILTER
CLOTH. THE PIPE INVERT IS TO BE FITTED WITH "FLEXI BAFFLE"
CULVERT BAFFLES BY S. SCOTT AND ASSOCIATES, OR APPROVED
EQUAL, AND INSTALLED PER MANUFACTURER'S STANDARDS. THE
BAFFLES SHALL BE INSTALLED AT 8-FOOT SPACING AND NO CLOSER
THAN 4 FEET TO A PIPE JOINT OR END. THE BAFFLES ARE TO BE
ATTACHED TO THE HDPE INVERT BETWEEN THE CORRUGATIONS WHERE
THE FULL WALL THICKNESS IN PRESENT.
EXISTING STREAM "NORTH"
EXISTING 2' CONTOURS
PROPOSED STREAM IMPACT 2
(79 LF, 388 SF AREA)
PROPOSED BYPASS PIPE (SEE DETAIL D3.02)
PROPOSED PERMANENT 42" HDPE DOUBLE
PIPE CULVERT STREAM CROSSING.
PO?
1. ip
Design
Concepts, PA
NCBELS #: C-2184
NOTE: STREAM IMPACT AREAS ARE MEASURED
FROM THE TOPS OF BANKS AND THE
PROPOSED LIMITS OF GRADING.
INSTALL TEMPORARY SANDBAG WALL FOR STREAM
DIVERSION DURING HEADWALL AND BYPASS PIPE
INSTALLATION (SEE DETAIL D3.02)
PROPOSED 2' CONTOURS
PROPOSED STORM
SYSTEM (TYP)
I I 2<
EXISTING TOP
OF BANK (TYP)
EXISTING STREAM
BUFFER (TYP)
PROPOSED WETLAND IMPACT 2 (1,377 SF)
2460-
2450
FINISHED GRADE
2460
PROPOSED STORM CROSSING
2440-
2430—
Q
0
O
0_
2420-
0
0
0
N
O
PE. 0 3.4%
/19
0
N
N
0
0
0_
CULVERT A
2450
EXISTING GRADE
—2440
—2430
—2420
o
0
+ +
BROOKS COVE STREAM IMPACT 2
IMPACT BULLETIN
FEBRUARY 2022
CIRCULAR CULVERT
WATER SURFACE
STREAMBED MATERIAL —�
SEE NOTES BELOW
Val -I
Mw1 I
MIN COVER
(SEE TRENCH DETAL)
INITIAL BACKFILL
-MPACTED TO 98%
F STANDARD PROCTOR)
HAUNCH
(COMPACTED TO 98%
OF STANDARD PROCTOR)
SUITABLE FOUNDATION
NOTES:
1. CULVERTS GREATER THAN 48" IN DIAMETER SHALL BE BURIED AT LEAST ONE FOOT
BELOW THE BED OF THE STREAM
2. CULVERTS 48" IN DIAMETER OR LESS SHALL BE BURIED 25% OF THE TOTAL DIAMETER
BELOW THE BED OF THE STREAM
cl
Design
Concepts, PA
NCBELS #: C-2184
STREAM CULVERT
NOT TO SCALE
Dewatering Device
or dirt/sediment bag)
Flow
Discharge Pump
Into Velocity
Dissipater
Discharge Hose
Dewatering Pump
(as needed)
Discharge Hose
Work Area
Length Not To Exceed
That Which Can Be
Completed In One Day
Sheeting
Flow
Intake
Hose
Sump —hole
Or Pool
12" Min Depth
2' Min Diameter
Diversion Pump
Base Flow + 1 Foot
(2 Foot Minimum)
Cross Section Of Sandbag/Stone Diversion
SECTION A -A
PUMP AROUND / DEWATERING
PLAN VIEW DETAIL
NOT TO SCALE
BROOKS COVE
STREAM IMPACT DETAIL BULLETIN
FEBRUARY 2022