20200340 Ver 3_Impact Information_20210716

Strickland, Bev
From: Mularski, Eric <[e-mail]>
Sent: Friday, July 16, 2021 10:40 AM
To: Johnson, Alan
Subject: [External] FW: Cowans Ford Floating Bulkhead Ramp and Storage Project
SAW-2020-00448 - MODIFICATION REQUEST
Attachments: Attachment2_Section404_401_Modification#1_2021_Approvals.pdf; Attachment3
_CowansFords_ImpactArea_JuIy2021.pdf; Attachmentl_Section404_401_2020
_Approvals.pdf; Cowans new impact area with measurements.pdf
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Report Spam.
Ms. Stygar and Mr. Johnson,
HDR, on behalf of Duke Energy Carolinas, LCC (Duke Energy), is requesting a modification to the approved Clean Water
Act (CWA) Section 404 Nationwide Permit 36 (Boat Ramps)/Section 401 Water Quality General Certification Number
4132 for additional impacts to open waters (Lake Norman) for Duke Energy's Cowans Ford Floating Bulkhead Ramp and
Storage Project (SAW-2020-00448/DWR# 20-0340) in Lincoln County, North Carolina.
Krysta — Your voicemail indicated that you are on maternity leave until mid -July so I copied Bryan Roden -Reynolds on this
request.
Alan — I will also submit a new application electronically and pay the application fee to process this request.
Original Section 404/401 Approval (March 2020) — An electronic Pre -Construction Notification (PCN) was submitted to
authorize approximately 0.14 acre of permanent fill (1,558 cubic yards) to install a boat launch (i.e., ramp) for a floating
bulkhead that would be used for dam inspections for the nearby Cowans Ford Hydroelectric Facility. Duke Energy
received authorization for construction under a CWA Section 404 U.S. Army Corps of Engineers (USACE) Nationwide
Permit 36 (Boat Ramps) on 3/16/2020 (SAW-2020-00448). Approval of the project under 401 Water Quality General
Certification Number 4132 and/or 4145 was received from the N.C. Division of Water Resources (NCDWR), dated
3/18/2020 (see Attachment 1 — Section 404/401 2020 Approvals).
Section 404/401 Modification #1 — (February 2021) — The original boat launch design included installation via a
causeway by pouring the concrete slabs onshore and then pushing/pulling them into place. During the construction
process, this method proved to be not feasible. The construction plan was redesigned to utilize a cofferdam system,
provided by Portadam, which allowed construction of the ramp to be completed in the dry. A modification was submitted to
the USACE and NCDWR for an additional 0.02 acres (56 cubic yards) of permanent open water impacts at the end of the
previously permitted boat ramp to facilitate installation of the Portadam cofferdam system. The temporary de -watering
workspace associated with the cofferdam will result in approximately 0.18 acre of temporary open water impacts. Email
authorization was received from the USACE on 2/17/2021 and an NCDWR approval letter for modifications under 401
Water Quality General Certification Number 4132 and/or 4145 was also received, dated 3/2/2021 (see Attachment 2 —
Modification #1 Approvals).
Section 404/401 Modification #2 (July 2021) - Duke Energy and their construction contractor, Crowder Company
(Crowder) is requesting approximately 0.05 acres (730 cubic yards) of additional permanent open water fill (rip rap) and
approximately 0.28 acres of temporary de -watering impacts along the sides of the boat ramp to facilitate a safer Portadam
cofferdam system during construction. The maximum capacity to retain water in a Portadam system is 10 feet. The
additional stone fill around the boat ramp will allow for additional freeboard and would provide additional safety to workers
during construction during wakes from the lake during windy days or days with high boat traffic. The fill will be associated
with the additional area associated with the expanded Portadam area and fill under the boat ramp (see Attachment 3 —
Cowans Ford Impact Area).
Below is a chart that details the timeline of approved Section 404/401 impacts as well as newly requested impacts
associated with this project.
1

Type of
Impact
Original
Amount of
Approved
Permanent
Impacts
(March 2020)
Modification #1
Amount of
Approved
Permanent
Impact
(February 2021)
Modification #1
Amount of
Approved
Temporary Impact
(February 2021)
Modification #2
Permanent Impact
(requested July 2021)
Modification
#2 Temporary
Impacts (requested
July 2021)
Open
Water
(Fill)
0.14 acres
0.14 acre
(original) + 0.02
acre
(Modification #1)
= 0.16 acre
TOTAL
0 acre
0.14 acre (original) +
0.02 acre (Modification
#1) + 0.05 acre
(Modification #2) = 0.21
acre TOTAL
0 acre
Open
Water
(De-
Watering)
0 acres
0 acre
0.18 acre
0 acre
0.18 acre
(Modification #1) +
0.28 acres
(Modification #2) =
0.46 acre TOTAL
Crowder provided Duke Energy with the construction sequence below:
• Crowder will place a turbidity curtain around the perimeter of the work area.
• Crowder will install a rip rap causeway below the normal pool elevation in line with the proposed boat ramp. The
causeway will serve as a stone base for the Portadam in order to facilitate the assembly of the cofferdam. The rip
rap causeway will be removed once the area is dewatered.
• Crowder will install rock past the end of the existing ramp.
• The cofferdam framework will be preassembled on land, placed in the water using a forklift or excavator, floated
to the desired location, and rested on the bottom.
• Once the framework is established in the desired location, heavy-duty netting will be installed on the framework,
and then the liner will be floated out and installed over the netting and framework.
• The work area will be de -watered once the liner is installed.
• De -watering will be accomplished with two to three pumps placed inside spill containments onshore:
o Rip rap will be placed onshore in an upland area for the pump discharge.
o Once the water reaches appropriate levels, 4-inch pumps will be utilized with sediment bags before
discharge onshore. The water from the temporary workspace will be run through sediment bags and then
allowed to infiltrate in the upland area or return via overland flow to the lake.
o Pumps will be used to keep the work area dry.
• Once the area is de -watered, the launch ramp construction will be facilitated by installing the concrete slabs.
• Water will be pumped back into the temporary de -watered area once the construction is completed.
• The Portadam will be dissembled and removed.
Please do not hesitate to contact me should you have questions or require additional information to modify the existing
Section 404/401 authorizations for this project.
Thank you,
Eric Mularski, Pws
Environmental and Regulatory Team Lead
HDR
440 S. Church Street
Charlotte, NC 28202
D 704-973-6878 M 704-806-1521
Eric.mularski(c�hdrinc.com
hdrinc.com/follow-us
2

Mularski, Eric
From:
Nardo, Anthony <[e-mail]>
Sent:
Wednesday, February 17, 2021 4:50 PM
To:
Stygar, KRYSTYNKA B CIV USARMY CESAW (USA)
Cc:
Arcella, Joseph Louis; Byrum, Wade M
Subject:
[EXTERNAL] RE: Cowans Ford Floating Bulkhead Ramp and Storage Project
SAW-2020-00448
Ms. Stygar,
Thank you for the reply. The email notification should suffice for our needs. We appreciate the quick turnaround and will
send you the project completion form when the work has been completed.
Thank You,
Tony Nardo
D 980.337.5004 M 814.449.7827
hdrinc.com/follow-us
From: Stygar, KRYSTYNKA B CIV USARMY CESAW (USA) <[e-mail]>
Sent: Wednesday, February 17, 2021 4:14 PM
To: Nardo, Anthony <[e-mail]>
Cc: Arcella, Joseph Louis <[e-mail]>; Byrum, Wade M <Wade.Byrum @duke-energy.com>
Subject: RE: Cowans Ford Floating Bulkhead Ramp and Storage Project SAW-2020-00448
CAUTION: [EXTERNAL] This email originated from outside of the organization. Do not click links or open attachments
unless you recognize the sender and know the content is safe.
Mr. Nardo,
Good afternoon, Yes I have received the documents and described changes to SAW-2020-00448.
Based on the information provided, the additional impacts are allowed, and permitted. I have adjusted the permanent
impacts to reflect the changes in Cowans Ford Floating Bulkhead Ramp and Storage Project as described. USACE agrees
that the 50 CY of discharge is waived, and that the additional discharge will not result in no more than minimal adverse
environmental effects.
Please let me know if this email will suffice based on project needs, or if more documentation would be requested.
Regards
Krysta
From: Nardo, Anthony <[e-mail]>
Sent: Wednesday, February 10, 2021 8:34 AM
To: Stygar, KRYSTYNKA B CIV USARMY CESAW (USA) <[e-mail]>

Cc: Arcella, Joseph Louis <[e-mail]>; Byrum, Wade M <Wade.Byrum @duke-energy.com>
Subject: [Non-DoD Source] RE: Cowans Ford Floating Bulkhead Ramp and Storage Project SAW-2020-00448
Ms. Stygar,
I am following up to confirm you received the email, and attachments, sent on February 5, 2021. If you have any
questions or need more information please feel free to contact me at the mobile number below or at this email address.
Thank You,
Tony Nardo
D 980.337.5004 M 814.449.7827
hdrinc.com/follow-us
From: Nardo, Anthony
Sent: Friday, February 5, 2021 3:38 PM
To: [e-mail]
Cc: Arcella, Joseph Louis <[e-mail]>; Byrum, Wade M <Wade.Byrum @duke-energy.com>;
Cahoon, Steve <[e-mail]>; Gentry, Sarah <[e-mail]>
Subject: Cowans Ford Floating Bulkhead Ramp and Storage Project SAW-2020-00448
Dear Ms. Stygar,
I am writing on behalf of Duke Energy Carolinas, LLC (Duke Energy) in reference to SAW-2020-00448, Cowans Ford
Floating Bulkhead Ramp and Storage Project, which was verified by Ms. Catherine Janiczak of the US Army Corps of
Engineers (USACE) in March 2020. Duke Energy proposed to install a launch ramp for a floating bulkhead that will be
used for dam inspections for the nearby Cowans Ford Hydroelectric Station. Duke Energy received verification of the
Nationwide Permit 36 on March 16, 2020, authorizing permanent impacts of 0.14 acre (See Attachment 1). A portion of
this work is already completed, the rip rap and crushed stone base has been installed and a portion of the concrete slab
was installed on top.
Duke Energy and their construction contractor, Crowder Construction Company (Crowder), originally proposed to install
the ramp via a causeway. Crowder proposed to pour the concrete slabs onshore and then push/pull them into place.
During the construction process, this method proved not to be feasible. The construction plan was redesigned with a
proposed cofferdam system, provided by Portadam. This method will allow construction to be completed in the dry and
ensure design compliance for the ramp. (See Attachment 2 — Portadam Example for a simplified example of the
installation.) Please note, the de -watering of the work area will not be discharged directly into the lake.
The construction sequence will be as follows:
• Crowder will install rock past the end of the existing ramp (see Attachment 3 — Revised Impact Figure for
additional details).
• The cofferdam framework will be preassembled on land, placed in the water using a forklift or excavator, floated
to the desired location, and rested on the bottom.
• Once in the desired location, heavy-duty netting will be installed on the framework, and then the liner will be
floated out and installed over the netting and framework.
• Once the liner is installed, the work area will be de -watered.
• De -watering will be accomplished with two to three pumps placed inside spill containments onshore (see
Attachment 4 — De -watering Plan for additional details):
o Rip rap will be placed onshore in an upland area for the pump discharge.
o Once the water reaches appropriate levels, 4-inch pumps will be utilized with sediment bags before
discharge onshore. The water from the temporary workspace will be run through sediment bags and then
allowed to infiltrate in the upland area or return via overland flow to the lake.
o Pumps will be used to keep the work area dry.
• Once the area is de -watered, the launch ramp construction will be completed, by installing the concrete slabs.
• Once construction is finished, water will be pumped back into the de -watered area.
• The liner will be removed, the netting will be removed, and finally the framework will be removed and moved
onshore.

The newly proposed permanent impacts will result from the placement of rip rap at the end of the ramp to facilitate the
cofferdam installation. The rip rap will result in approximately 0.02 acre (56 cubic yards) of additional permanent impacts.
Total permanent impacts are 0.16 acre (1,513.4 cubic yards) for original and newly proposed work. The de -watered
workspace area will result in approximately 0.18 acre of temporary impacts.
If you have any questions or require additional information after your review of the enclosed materials, please contact me
at [phone] or [e-mail].
Respectfully,
Tony Nardo
Environmental Scientist
HDR
440 S. Church Street, Suite 900
Charlotte, NC 28202
D 980.337.5004 M 814.449.7827
Anthony. Nardo(a2)hd rinc.com
hdrinc.com/follow-us

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
March 2, 2021
DWR# 20-0340V2
Lincoln County
Mr. Joseph Arcella
Duke Energy Carolinas
257 Duke Lane
Stanley, NC 28164
Delivered via Email: Joseph.Arcella(a�_duke-enrgy.com
Subject: APPROVAL of 401 Water Quality Certification with Additional Conditions
Cowans Ford Boat Ramp
Dear Mr. Arcella:
You have our approval, in accordance with the General Certification and those
conditions listed below, for the purpose proposed in your application submitted on February 15,
2021, and fee received on February 16, 2021. After reviewing your application, we have
determined that this project is covered by Water Quality General Certification Number 4132
and/or 4145 which can be viewed on our web site at https://deg.nc.gov/about/divisions/water-
resou rces/water-resources-permits/wastewater-branch/401-wetlands-buffer-permits/401-401-
isolated-wetlands-waters-program The General Certification allows you to use Nationwide
Permit Number 36 and/or Regional General Permit 30 once it is issued to you by the U.S. Army
Corps of Engineers (COE). Please note that you should get any other federal, state or local
permits before proceeding with your project, including those required by (but not limited to)
Sediment and Erosion Control, Non -Discharge, and Water Supply Watershed regulations.
The above noted Certification will expire when the associated 404 permit expires unless
otherwise specified in the General Certification. It is advised that all conditions of the
Certification are reviewed prior to initiation of the project. In addition to the requirements of the
Certification, you must also comply with the following conditions:
This approval is only valid for the purpose and design that you described in your
application. If you change your project, you must notify us in writing, and you may be
required to send us a new application for a new Certification. If total wetland fills for this
project (now or in the future) exceed one acre, or of total impacts to streams (now or in
the future) exceed 300 linear feet, compensatory mitigation may be required. If the
property is sold, the new owner must be given a copy of the Certification and approval
letter; and is thereby responsible for complying with all conditions. 15A NCAC
02H .0506 and 15A NCAC 02H .0507
2. The Mooresville Regional Office shall be notified in writing once construction at the
approved impact areas has commenced. 15A NCAC 02H .0502 (e)
D E Qbi�� North Carolina Department of Environmental Quality I Division of Water Resources
Mooresville Regional Office 1 610 East Center Avenue, Suite 301 1 Mooresville, North Carolina 28115
vOry rN Cx:40:.itiA �
N. a Io E".w^^�"��a°:r� /� 704.663.1699

3. Approved Impacts:
Type of Impact
Amount Approved
Temporary Impact
Amount Approved
Permanent Impact
Open Water (fill)
0.18 acre
0.02 acre
Wetland
0 acre
0 acre
4. Stormwater discharge structures at this site shall be constructed in a manner such that the
potential receiving streams (of the discharge) will not be impacted due to sediment
accumulations, scouring or erosion of the stream banks. 15A NCAC 02H .0506(b)(5)
5. Use of native vegetation and other soft stream bank stabilization techniques is
recommended where practicable instead of riprap or other bank hardening methods. If
riprap is necessary, it shall not be placed in the streambed, unless approved by DWR
6. The permittee shall report to the Mooresville Regional Office any noncompliance with
this certification, any violation of stream or wetland standards [including but not limited to
sediment impacts, and any violation of state regulated riparian buffer rules. Information
shall be provided orally within 24 hours (or the next business day if a weekend or
holiday) from the time the applicant became aware of the circumstances. A written
submission shall also be provided within 5 business days of the time the applicant
becomes aware of the circumstances. The written submission shall contain a description
of the noncompliance, and its causes; the period of noncompliance, including exact
dates and times, if the noncompliance has not been corrected, the anticipated time
compliance is expected to continue; and steps taken or planned to reduce, eliminate,
and prevent reoccurrence of the noncompliance. The Division may waive the written
submission requirement on a case -by -case basis. 15A NCAC 02B .0200
7. The Permittee shall ensure that the final design drawings adhere to the permit and to the
permit drawings submitted for approval. 15A NCAC 02H .0507 (c) and 15A NCAC
02H .0506 (b)(2) and (c)(2)
8. Upon completion of the project, the applicant shall complete and return a "Certificate of
Completion" form to the 401/Wetlands Branch of the Division using the following link:
https:Hedocs.deq.nc.gov/Forms/Certificate-of-Completion. 15A NCAC 02H .0507(c)
This Certification can be contested as provided in Articles 3 and 4 of the General Statute
150B by filing a written petition for an administrative hearing to the Office of the Administrative
Hearings (hereby known as OAH). A petition form may be obtained from the OAH at
http://www.ncoah.com/or by calling the OAH Clerk's Office at [phone].
Within sixty (60) calendar days of receipt of this notice, a petition must be filed with the
OAH. A petition is considered filed when the original and one (1) copy along with any applicable
OAH filing fee is received in the OAH during normal office hours (Monday through Friday, 8:00
am to 5:00 pm, excluding state holidays).

The petitions may be faxed to the OAH at [phone], provided the original and one
(1) copy of the petition along with any applicable OAH filing fee is received by the OAH within
five (5) business days following the faxed transmission. Mailing address for the OAH:
If sending via US Postal Service:
Office of Administrative Hearings
6714 Mail Service Center
Raleigh, NC 27699-6714
If sending via delivery service (UPS, FedEx, etc.)
Office of Administrative Hearings
1711 New Hope Church Rd.
Raleigh, NC 27609-6285
One (1) copy of the petition must also be served on DEQ as follows:
Mr. Bill Lane, General Counsel
Department of Environmental Quality
1601 Mail Service Center
Raleigh, NC 27699-1601
This letter completes the review by the Division under Section 401 of the Clean Water
Act. If you have any questions, please telephone Mr. Alan Johnson in the Mooresville Regional
Office at 704-663-1699.
Sincerely,
EDocuSigned by:
�r0 , H P44-ft for
F161FB69A2D84A3...
W. Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office, DEQ
Attachment
cc: Krysta Stygar, Army Corps of Engineers, Charlotte, email
Tony Nardo, HDR, Anthony. nardo(a)hdrinc.com
DWR 401 & Buffer Permitting Branch file
MRO, Land Quality

CERTIFICATE OF COMPLETION
NCDWR Project No.:
Applicant:
Project Name:
Date of Issuance of 401 Water Quality Certification:
Certificate of Completion
County:
Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer
Rules, and any subsequent modifications, the applicant is required to return this certificate to the 401
Wetland & Buffer Permitting Unit, North Carolina Division of Water Resources, 1617 Mail Service Center,
Raleigh, NC, 27699-1617. This form may be returned to NCDWR by the applicant, the applicant's
authorized agent, or the project engineer. It is not necessary to send certificates from all of these.
Applicant's Certification
I, , hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the construction such that the construction was observed
to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer
Rules, the approved plans and specifications, and other supporting materials.
Signature:
Agent's Certification
Date:
I, , hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the construction such that the construction was observed
to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer
Rules, the approved plans and specifications, and other supporting materials.
Signature:
Engineer's Certification
Partial Final
Date:
I, , as a duly registered Professional Engineer in the State
of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of
the project for the Permittee hereby state that, to the best of my abilities, due care and diligence was
used in the observation of the construction such that the construction was observed to be built within
substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved
plans and specifications, and other supporting materials.
Signature Registration No. Date

D..SigR Envelope ID: 89F5DF64-07DD4FC6.SC2973F2BB6DA 7 3
DWG NO. CF-470—B-01 REV.
A /
B
C
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T/STORAGE RAMP
EL 766.00
780
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750
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SCALE: 17777
60' STORAGE RAMP
-- 190' C
-WINCH
FLOATING
BULKHEAD
- --
START OF RAMP
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-CART TIE -DOWN
STONE BASE
SEE SECTION A
SECTION
B
SCALE: 1"=20'
5 6 7 8 9 10 DWG No. CF-470-B-01 REV 1
GENERAL NOTES:
1. FOR ADDITIONAL GENERAL NOTES SEE
CF-470-A-01.
2. 4 INCH OF 2"/3" STONE INCLUDED TO A
FACILITATE PLACEMENT OF CONCRETE SLAB
DURING CONSTRUCTION. THICKNESS OF
2"/3" STONE MAY BE INCREASED AT
CONTRACTOR'S DISCRETION.
15-0"
FLOATING 3. EXTEND STONE A MINIMUM OF 6 INCHES
BULKHEADD — — — — F11L
BEYOND THE PERIMETER OF THE FENCE7'-6" —1 -9 1/2CART
RAMP B
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SCALE: 3/8"=1'-0" 1 -
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BOARD FLOAT BULKHEAD RAIL STOP
FULL POND EL 760.00 BULKHEAD LOWER
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---- -- _ _ _ _- - -_ -- -- T/ RAMP EL 748.83t -
EXISTING GRADE
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CONTRACTOWENDOR INFORMATION
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COWANS FORD HYDROELECTRIC PLANT
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FOSSIL HYDRO OPERATIONS
FACILITY:
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UNIT:
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SYSTEM:
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TITLE:
FLOATING BULKHEAD I
RAMP AND STORAGE AREA
PROJECT N0:
CC N0:
W.O. N0:
HDR Engineering, Inc. of the Carolinas
License Number: F-0116
4a0 S Church St., Suite 1000 Charlotte, NC 28202.2075
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SIZE: ANSI-D
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SCALE:
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1=1
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03/23/2620
N/A
CWF-05206
CHKO
APPRVD
DATE
WOIPR#
ACT#
THE ABOVE IS RESERVED FOR VENDOR'S LOGO, NAME, ADDRESS,
TELEPHONE NUMBER AND ANY REQUIRED REFERENCE NUMBERS. ALL
DRAWINGS TO BE PRODUCED IN AUTOCAD RELEASE MO OR LATER.
THE ABOVE IS RESERVED FOR
PROFESSIONAL ENGINEER SEAL
USE INK - DO NOT EMBOSS
THIS DRAWING IS THE PROPERTY OF DUKE ENERGY.
AND IS NOT TO BE REPRODUCED OR USED FOR ANY PURPOSE
EXCEPT AS SPECIFIED BY DUKE ENERGY.
$HT
DWG NO:
CF-470—B-01
REV:
DRAWING REVISIONS
6
- -
7 8
9
10 11
12

U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action Id. SAW-2020-00448 County: Lincoln U.S.G.S. Quad: NC -Lake Norman South
GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION
Permittee: Duke Enerev Carolinas, LLC
Joseph Arcella
Address: 257 Duke Lane
Stanley, NC 28164
Telephone Number: 704-812-1151
E-mail: Joseph.Arcella(dduke-ener2y.com
Size (acres) 45 Nearest Town Stanley
Nearest Waterway Catawba River River Basin Santee
USGS HUC 03050101 Coordinates Latitude: 35.441845
Longitude:-80.960761
Location description: The proiect area is located 100 feet Northeast of the intersection of Club Drive and Ravenwood Lane in
Lincoln County. PIN(s): 78530, 56191.
Description of projects area and activity: This verification authorizes the permanent impact of 0.14 acres of Lake Norman for a
launch ramp.
Applicable Law(s): ® Section 404 (Clean Water Act, 33 USC 1344)
❑ Section 10 (Rivers and Harbors Act, 33 USC 403)
Authorization: NWP 36. Boat Ramps
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 enclosed
Conditions, your application signed and dated 3/4/2020, and the enclosed plans Figure 9 & Figure 10 dated 1/8/2020. 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 authorization is modified, suspended
or revoked. If, prior to the expiration date identified below, the nationwide 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 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 permit, will remain authorized provided the activity is completed
within twelve months of the date of the nationwide 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 [phone]) to determine Section 401 requirements.
For activities occurring within the twenty coastal counties subject to regulation under the Coastal Area Management Act (LAMA), prior
to beginning work you must contact the N.C. Division of Coastal Management Morehead City, NC, at [phone].
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 Catherine M. Janiczak at 704-510-1438 or Catherine.M.Janiczak(&usace.armv.mil.
Corps Regulatory Official: r 7e. oa4,eeG, G Date: 03/16/2020
Expiration Date of Verification: 03/18/2022

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
http://corpsmapu.usace.army.mil/cm_apex/Vp=136:4:0
Copy furnished:
Agent: HDR Engineering of the Carolinas
Tony Nardo
Address: 440 South Church Street, Suite 900
Charlotte, NC 28202
Telephone Number: 980-337-5004
E-mail: Anthony.nardoAhdrinc.com

Action ID Number: SAW-2020-00448County: Lincoln
Permittee: Duke Energy Carolinas, LLC, Joseph Arcella
Project Name: Cowans Ford Floating Bulkhead Ramp and Storage Project
Date Verification Issued: 03/16/2020
Project Manager: Catherine M. Janiczak
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: Catherine M. Janiczak
Charlotte Regulatory Office
U.S Army Corps of Engineers
8430 University Executive Park Drive, Suite 615
Charlotte, North Carolina 28262
or
[e-mail]
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

DWG NO.
CF-470-B-01
REV.
3
4
5
6
7
8
9
10
DWG NO.
CF-470-B-01
REV.
GENERAL NOTES:
1. FOR GENERAL NOTES SEE CF-470—A-01.
A
B
C
D
E
F
G
H
780-
w 770-
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0 760-
w 750-
740-
ACCESS AREA —7
/CL PAD
AND RAMP
d
0
6' WIDE
CLASS "A"
RIPRAP
PERIMETER
FLOATING
BULKHEAD
STORAGE PAD
FLOATING BULKHEAD
T/STORAGE PAD
EL 766.00
60'-0" STORAGE PAD
WINCH
FLOATING
BULKHEAD
CLASS 1 RIP RAP
(2' THK MIN)
PLAN
SCALE: 1 "=20'
START OF RAMP
7% SLOPE
FLOATING
BULKHEAD
CART RAIL
0
f\
220' CONC RAMP
2'-0" FREE
BOARD FLOAT
FLOATING
BULKHEAD
RAIL STOP
STONE BASE
SEE SECTION A
SECTION n
SCALE: 1 "=20'
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BULKHEAD
FLOATING
BULKHEAD
STORAGE CART
5'-0"
TYP
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END OF RAMP
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EXISTING GRADE
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CL RAIL
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NCDOT CLASS "A" RIP RAP
SECTION
SCALE: 3 8"=1'-0" -
/RAMP EL VARIES
2. 4 INCH #57 STONE INCLUDED TO FACILITATE
SLIDING OF CONCRETE SLAB DURING
CONSTRUCTION. THICKNESS OF #57 STONE
MAY BE CHANGED AT CONTRACTOR'S
DISCRETION.
2
0
2 FT
SCALE: 3/8"=1'-0"
20
0
20
SCALE: FEET
1-0-9-OLi-dO
DWG SUB TYPE:
J
PRELIMINARY
NOT FOR CONSTRUCTION
OR
RECORDING
ISSUED FOR INFORMATION.
PTD
01/08/2020
N/A
CWF-05206
ISSUED FOR 30% CLIENT REVIEW.
DKL
10/19/2019
N/A
CWF-05206
CONTRACTOR/VENDOR INFORMATION
HDR Engineering, Inc. of the Carolinas
License Number: F-0116
440 S Church St., Suite 1000 Charlotte, NC 28202-2075
SEAL
COWANS FORD HYDROELECTRIC PLANT
FOSSIL HYDRO OPERATIONS
FACILITY:
CWF
UNIT:
00
SYSTEM:
N/A
DUKE
., ENERGY®
PROJECT NO:
CF001259
CC NO:
CWF-05206
W.O. NO:
N/A
SIZE: ANSI-D
34"x 22"
SCALE:
AS NOTED
PLOT
1=1
TITLE:
FLOATING BULKHEAD
RAMP AND STORAGE AREA
GENERAL ARRANGEMENT
PLAN AND SECTIONS
REV.
DESCRIPTION
DRAWN
CHKD
APPRVD
DATE
WO/PR
ACT
DRAWING REVISIONS
THE ABOVE IS RESERVED FOR VENDOR'S LOGO, NAME, ADDRESS,
TELEPHONE NUMBER AND ANY REQUIRED REFERENCE NUMBERS. ALL
DRAWINGS TO BE PRODUCED IN AUTOCAD RELEASE 2000 OR LATER.
THE ABOVE IS RESERVED FOR
PROFESSIONAL ENGINEER SEAL
USE INK - DO NOT EMBOSS
THIS DRAW NG IS THE PROPERTY OF DUKE ENERGY.
AND IS NOT TO BE REPRODUCED OR USED FOR ANY PURPOSE
EXCEPT AS SPECIFIED BY DUKE ENERGY.
SHT
DWG NO:
CF-470-B-01
REV:
FILENAME: CWF00 DUKE CF-470-B-01.DGN

DWG NO.
CF-470-C-07
REV. 0
6 1 7 1 8
9 10 DWG N0. CF-470-C-07
REV. 0
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770 40 LINEAR FEET OF 8" DIAMETER
DUCTILE IRON PIPE (DIP) WITH
A 1.25% SLOPE
.00 - - LOD LOD
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768 —77 ELECTRIC CABLE PARKING AND EQUIPMENT
TRANSFORMER PAD---\ --- 77t
60 t� FULL POND EL 760� _700 ;� 3 l
SILT FENCE J-HOOK (TYP)-
30' CATAWBA } _
! i RIVER BUFFER 1 SILT FENCE (TYP)
PLAN
SCALE: 1 "=100'
C-08 (DOUBLE ROW)
CONCRETE r /
STORAGE PAD CONCRETE RAMP
SEE NOTE 2
750 '�~ "*--TURBIDITY CURTAIN 4
1
CONTRACTOR/VENDOR INFORMATION SEAL
F)l
HDR Engineering, Inc. of the Carolinas
License Number: F-0116
0 ISSUED FOR CONSTRUCTION. RMM N/A CWF-05206 440 S Church St., Suite 1000 Charlotte, NC 28202-2075
REV. DESCRIPTION DRAWN CHKD APPRVD DATE WO/PR# ACT# THE ABOVE IS RESERVED FOR VENDOR'S LOGO, NAME, ADDRESS, THE ABOVE IS RESERVED FOR
DRAWING REVISIONS TELEPHONE NUMBER AND ANY REQUIRED REFERENCE NUMBERS. ALL PROFESSIONAL ENGINEER SEAL
DRAWINGS TO BE PRODUCED IN AUTOCAD RELEASE 2000 OR LATER. USE INK - DO NOT EMBOSS
1 2 3 4 5 6 7 8 --F9
GENERAL NOTES:
1. FOR GENERAL NOTES SEE CF-470-A-01.
FOR DRAWING INDEX SEE CF-470-A.
FOR ABBREVIATIONS SEE CF-470-A-02.
2. CONTRACTOR SHALL NOT ALTER OR DISTURB
EXISTING BIRD HOUSES ALONG SHORELINE. IF
NEEDED, DUKE ENERGY TO WORK WITH
DAVIDSON COLLEGE ON RELOCATION.
3. FOR LIMITS OF DISTURBANCE NORTHING,
EASTING COORDINATES SEE CF-470-C-01.
LEGEND:
—SF SILT FENCE
----- TC----- TC ----- TURBIDITY CURTAIN
13 CONSTRUCTION FENCE
---------------------- FULL POND
30' CATAWBA RIVER BUFFER
EXISTING MAJOR CONTOUR
EXISTING MINOR CONTOUR
EXISTING FENCE
FLOOD PLAIN
LIMITS OF DISTURBANCE
GRAVEL ROAD
SILT FENCE OUTLET
WATTLE
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0
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SCALE: FEET
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DWG SUB TYPE:
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COWANS FORD HYDROELECTRIC PLANT
DUKE
ILL
FOSSIL HYDRO OPERATIONS
UI
ENERGY®
Y
FACILITY:
UNIT:
SYSTEM:
CWF
00
N/A
D
TITLE:
FLOATING BULKHEAD
RAMP AND STORAGE AREA
0o f
PROJECT NO:
CC NO:
W.O. N0:
CF001259
CWF-05206
N/A
EROSION AND SEDIMENT CONTROL
SITE PLAN
�i
0
SIZE: ANSI-D
SCALE:
PLOT:
34"x 22"
AS NOTED
1=1
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THIS DRAWING IS THE PROPERTY OF DUKE ENERGY.
SHT
DWG NO:
REV:
LA
AND IS NOT TO BE REPRODUCED OR USED FOR ANY PURPOSE
C F-470-C-07
0
W
EXCEPT AS SPECIFIED BY DUKE ENERGY.
10 11 12

RO'1f COOPER
Cln—rim
MICHAEL S. RH AN
rP t r Manly
S. DANI EL SMITH
M r i em
Mr. Joseph Arcella
Duke Energy Carolinas
257 Duke Lane
Stanley, NC 28164
NORPt CAROL IKJA
Effl*avmrnraf Qvalnv
March 18, 2020
DWR# 20-0340
Lincoln County
Subject: APPROVAL of 401 Water Quality Certification with Additional Conditions
Cowans Ford Boat Ramp
Dear Mr. Arcella:
You have our approval, in accordance with the General Certification and those
conditions listed below, for the purpose proposed in your application dated March 4, 2020, and
received by the Division of Water Resources (the Division) on March 5, 2020. After reviewing
your application, we have determined that this project is covered by Water Quality General
Certification Number 4132 and/or 4145 which can be viewed on our web site at
https://deg. nc.gov/about/divisions/water-resou rces/water-resources-permits/wastewater-
branch/401-wetlands-buffer-permits/401-401-isolated-wetlands-waters-program The General
Certification allows you to use Nationwide Permit Number 36 and/or Regional General Permit
30 once it is issued to you by the U.S. Army Corps of Engineers (COE). Please note that you
should get any other federal, state or local permits before proceeding with your project,
including those required by (but not limited to) Sediment and Erosion Control, Non -Discharge,
and Water Supply Watershed regulations.
The above noted Certification will expire when the associated 404 permit expires unless
otherwise specified in the General Certification. It is advised that all conditions of the
Certification are reviewed prior to initiation of the project. In addition to the requirements of the
Certification, you must also comply with the following conditions:
This approval is only valid for the purpose and design that you described in your
application. If you change your project, you must notify us in writing, and you may be
required to send us a new application for a new Certification. If total wetland fills for this
project (now or in the future) exceed one acre, or of total impacts to streams (now or in
the future) exceed 300 linear feet, compensatory mitigation may be required. If the
property is sold, the new owner must be given a copy of the Certification and approval
letter; and is thereby responsible for complying with all conditions. 15A NCAC
02H .0506 and 15A NCAC 02H .0507
2. The Mooresville Regional Office shall be notified in writing once construction at the
approved impact areas has commenced. 15A NCAC 02H .0502 (e)
14orth £'_"h-�p ngmr swim yr E mm-vn rn cm vI Q.+Why 11W+ A + of WA Er o•••,; X
h%o rMLCRVPP.rWM" It10EW CCM1 rATM Ir.&dIa 101 w4.►+W4hCarmor2WS
�• 704kO 16,49

3. Approved Impacts:
Type of Impact
Amount Approved
Temporary Impact
Amount Approved
Permanent Impact
Open Water (fill)
0 acre
0.14 acre
Wetland
0 acre
0 acre
4. Stormwater discharge structures at this site shall be constructed in a manner such that the
potential receiving streams (of the discharge) will not be impacted due to sediment
accumulations, scouring or erosion of the stream banks. 15A NCAC 02H .0506(b)(5)
5. Use of native vegetation and other soft stream bank stabilization techniques is
recommended where practicable instead of riprap or other bank hardening methods. If
riprap is necessary, it shall not be placed in the streambed, unless approved by DWR
6. The permittee shall report to the Mooresville Regional Office any noncompliance with
this certification, any violation of stream or wetland standards [including but not limited to
sediment impacts, and any violation of state regulated riparian buffer rules. Information
shall be provided orally within 24 hours (or the next business day if a weekend or
holiday) from the time the applicant became aware of the circumstances. A written
submission shall also be provided within 5 business days of the time the applicant
becomes aware of the circumstances. The written submission shall contain a description
of the noncompliance, and its causes; the period of noncompliance, including exact
dates and times, if the noncompliance has not been corrected, the anticipated time
compliance is expected to continue; and steps taken or planned to reduce, eliminate,
and prevent reoccurrence of the noncompliance. The Division may waive the written
submission requirement on a case -by -case basis. 15A NCAC 02B .0200
7. The Permittee shall ensure that the final design drawings adhere to the permit and to the
permit drawings submitted for approval. 15A NCAC 02H .0507 (c) and 15A NCAC
02H .0506 (b)(2) and (c)(2)
8. Upon completion of the project, the applicant shall complete and return a "Certificate of
Completion" form to the 401/Wetlands Branch of the Division using the following link:
https:Hedocs.deq.nc.gov/Forms/Certificate-of-Completion. 15A NCAC 02H .0507(c)
This Certification can be contested as provided in Articles 3 and 4 of the General Statute
150B by filing a written petition for an administrative hearing to the Office of the Administrative
Hearings (hereby known as OAH). A petition form may be obtained from the OAH at
http://www.ncoah.com/or by calling the OAH Clerk's Office at [phone].
Within sixty (60) calendar days of receipt of this notice, a petition must be filed with the
OAH. A petition is considered filed when the original and one (1) copy along with any applicable
OAH filing fee is received in the OAH during normal office hours (Monday through Friday, 8:00
am to 5:00 pm, excluding state holidays).
The petitions may be faxed to the OAH at [phone], provided the original and one
(1) copy of the petition along with any applicable OAH filing fee is received by the OAH within
five (5) business days following the faxed transmission. Mailing address for the OAH:

If sending via US Postal Service:
Office of Administrative Hearings
6714 Mail Service Center
Raleigh, NC 27699-6714
If sending via delivery service (UPS, FedEx, etc.)
Office of Administrative Hearings
1711 New Hope Church Rd.
Raleigh, NC 27609-6285
One (1) copy of the petition must also be served on DEQ as follows:
Mr. Bill Lane, General Counsel
Department of Environmental Quality
1601 Mail Service Center
Raleigh, NC 27699-1601
This letter completes the review by the Division under Section 401 of the Clean Water
Act. If you have any questions, please telephone Mr. Alan Johnson in the Mooresville Regional
Office at 704-663-1699.
Sincerely,
—uaV3W.d&e
for
- •-x Jrt'_'F�t J
Corey Basinger, Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office, DEQ
Attachment
cc: Cathy Janiczak, Army Corps of Engineers, Charlotte, email
Tony Nardo, HDR, Anthony. nardo(aD-hdrinc.com
DWR 401 & Buffer Permitting Branch file
MRO, Land Quality

CERTIFICATE OF COMPLETION
NCDWR Project No.:
Applicant:
Project Name:
Date of Issuance of 401 Water Quality Certification:
Certificate of Completion
County:
Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer
Rules, and any subsequent modifications, the applicant is required to return this certificate to the 401
Wetland & Buffer Permitting Unit, North Carolina Division of Water Resources, 1617 Mail Service Center,
Raleigh, NC, 27699-1617. This form may be returned to NCDWR by the applicant, the applicant's
authorized agent, or the project engineer. It is not necessary to send certificates from all of these.
Applicant's Certification
I, , hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the construction such that the construction was observed
to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer
Rules, the approved plans and specifications, and other supporting materials.
Signature:
Agent's Certification
Date:
I, , hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the construction such that the construction was observed
to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer
Rules, the approved plans and specifications, and other supporting materials.
Signature:
Engineer's Certification
Partial Final
Date:
I, , as a duly registered Professional Engineer in the State
of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of
the project for the Permittee hereby state that, to the best of my abilities, due care and diligence was
used in the observation of the construction such that the construction was observed to be built within
substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved
plans and specifications, and other supporting materials.
Signature Registration No. Date

D..SigR Envelope ID: 89F5DF64-07DD4FC6.SC2973F2BB6DA 7 3
DWG NO. CF-470—B-01 REV.
A /
B
C
D
E
F
E
T/STORAGE RAMP
EL 766.00
780
770
w
H o 760
750
740
E
4
N
PLAN
SCALE: 17777
60' STORAGE RAMP
-- 190' C
-WINCH
FLOATING
BULKHEAD
- --
START OF RAMP
7% tO—E
-CART TIE -DOWN
STONE BASE
SEE SECTION A
SECTION
B
SCALE: 1"=20'
5 6 7 8 9 10 DWG No. CF-470-B-01 REV 1
GENERAL NOTES:
1. FOR ADDITIONAL GENERAL NOTES SEE
CF-470-A-01.
2. 4 INCH OF 2"/3" STONE INCLUDED TO A
FACILITATE PLACEMENT OF CONCRETE SLAB
DURING CONSTRUCTION. THICKNESS OF
2"/3" STONE MAY BE INCREASED AT
CONTRACTOR'S DISCRETION.
15-0"
FLOATING 3. EXTEND STONE A MINIMUM OF 6 INCHES
BULKHEADD — — — — F11L
BEYOND THE PERIMETER OF THE FENCE7'-6" —1 -9 1/2CART
RAMP B
j JCL RAIL CL RAID
V
FLOATING
BULKHEAD
STORAGE CART����{{'�'�--
5'-0",',
TYR T/RAMP EL VARIES
(SEE NOTE 2) -
2 r 2 C
NCDOT CLASS A RIP RAP
SECTION A
SCALE: 3/8"=1'-0" 1 -
D
0 1 ISSUED FOR CONSTRUCTION.
REV. DESCRIPTION
1 2 3 --I-- 4 5
v
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E 1416142.57 --ttj 1
2'-0" FREE FLOATING END OF RAMP
BOARD FLOAT BULKHEAD RAIL STOP
FULL POND EL 760.00 BULKHEAD LOWER
POND LIMIT EL 757.00
---- -- _ _ _ _- - -_ -- -- T/ RAMP EL 748.83t -
EXISTING GRADE
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SCALE: 3/8"=1'-0"
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SCALE: FEET
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CONTRACTOWENDOR INFORMATION
SEAL
ap`�Qe F CA °�z!yy%,
SFAL ` ]_
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COWANS FORD HYDROELECTRIC PLANT
�' DUKE
ENERGY.Yl
FOSSIL HYDRO OPERATIONS
FACILITY:
CWF
UNIT:
00
SYSTEM:
N/A
TITLE:
FLOATING BULKHEAD I
RAMP AND STORAGE AREA
PROJECT N0:
CC N0:
W.O. N0:
HDR Engineering, Inc. of the Carolinas
License Number: F-0116
4a0 S Church St., Suite 1000 Charlotte, NC 28202.2075
°' �qh B. GEH�c°°
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CF001259
CWF-05206
NIA
GENERAL ARRANGEMENT �l
PLAN AND SECTIONS a
v
DLA
SBG
05/13/2020
N/A
CWF-05206
SIZE: ANSI-D
34"x 22"
SCALE:
AS NOTED
PLOT:
1=1
DLA
SBG
03/23/2620
N/A
CWF-05206
CHKO
APPRVD
DATE
WOIPR#
ACT#
THE ABOVE IS RESERVED FOR VENDOR'S LOGO, NAME, ADDRESS,
TELEPHONE NUMBER AND ANY REQUIRED REFERENCE NUMBERS. ALL
DRAWINGS TO BE PRODUCED IN AUTOCAD RELEASE MO OR LATER.
THE ABOVE IS RESERVED FOR
PROFESSIONAL ENGINEER SEAL
USE INK - DO NOT EMBOSS
THIS DRAWING IS THE PROPERTY OF DUKE ENERGY.
AND IS NOT TO BE REPRODUCED OR USED FOR ANY PURPOSE
EXCEPT AS SPECIFIED BY DUKE ENERGY.
$HT
DWG NO:
CF-470—B-01
REV:
DRAWING REVISIONS
6
- -
7 8
9
10 11
12