20201908 Ver 1_ePCN Application_20210114

DWR
mrlslon of Water Resources
Pre -Construction Notification (PCN) Form
October 26, 2020 Ver 3.3
Initial Review
Has this project met the requirements for acceptance in to the review process?*
r Yes
r No
Is this project a public transportation project?*
C Yes r No
Change only if needed.
BIMS # Assigned
20201908
Is a payment required for this project?*
r No payment required
r Fee received
r Fee needed - send electronic notification
Select Project Reviewer*
Stephanie Goss:eads\szgoss
Information for Initial Review
la. Name of project:
COURTESY COPY - Buckhorn Dam Modifications
1a. Who is the Primary Contact?*
Richard Harmon
1b. Primary Contact Email:*
[e-mail]
Date Submitted
1/14/2021
Nearest Body of Water
Cape Fear River
Basin
Cape Fear
Water Classification
Class B
Site Coordinates
Latitude: Longitude:
35.591355-79.048475
Pre -Filing Meeting Information
ID#
20201908
Pre -fling Meeting or Request Date*
12/8/2020
Attach documentation of Pre -Filing Meeting Request here:*
DWR Pre -Filing Meeting Request Form.pdf
Version#*
1
Reviewing Office*
Raleigh Regional Office - [phone]
1c. Primary Contact Phone:*
[phone]
Version
1
56.77KB
A. Processing Information C^U
County (or Counties) where the project is located:
Chatham

Is this a NCDMS Project
r Yes r No
Is this project a public transportation project?*
r Yes r No
la. Type(s) of approval sought from the Corps:
W Section 404 Permit (wetlands, streams and waters, Clean Water Act)
r Section 10 Permit (navigable waters, tidal waters, Rivers and Harbors Act)
Has this PCN previously been submitted?*
r Yes
r No
1b. What type(s) of permit(s) do you wish to seek authorization?
W Nationwide Permit (NWP)
r Regional General Permit (RGP)
r Standard (IP)
1c. Has the NWP or GP number been verified by the Corps?
r Yes r No
Nationwide Permit (NWP) Number: 03 - Maintenance
NWP Numbers (for multiple NWPS):
1d. Type(s) of approval sought from the DWR:
W 401 Water Quality Certification - Regular
r Non-404 Jurisdictional General Permit
r Individual Permit
le. Is this notification solely for the record because written approval is not required?
For the record only for DWR401 Certification:
For the record only for Corps Permit:
F 401 Water Quality Certification - E)press
F Riparian Buffer Authorization
1f. Is this an after -the -fact permit application?*
r Yes r No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r Yes r No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r Yes r No
Acceptance Letter Attachment
Figure 5 Jurisdictional_Map. pdf
1h. Is the project located in any of NC's twenty coastal counties?
r Yes r No
1j. Is the project located in a designated trout watershed?
r Yes r No
B. Applicant Information
1d. Who is applying for the permit?
V Owner r Applicant (other than owner)
le. Is there an Agent/Consultant for this project?*
r Yes r No
2. Owner Information
2a. Name(s) on recorded deed:
Carolina Power & Light
2b. Deed book and page no.:
Book 887, Page 297
2c. Responsible party:
1007.75KB
*
r Yes r No
r Yes r No
2d.Address

Street Address
864 South Edgewood Road
Address Line 2
city
Eden
Postal / Zip Code
27288
2e. Telephone Number:
[phone]
2g. Email Address:*
[e-mail]
4. Agent/Consultant (if applicable)
4a. Name:
Richard Harmon
4b. Business Name:
Wood Environmental & Infrastructure Solutions
4c.Address
Street Address
4021 Stirrup Creek Drive
Address Line 2
Suite 100
City
Durham
Postal / Zip Code
27703
4d. Telephone Number:
[phone]
4f. Email Address:*
[e-mail]
Agent Authorization Letter*
Document1.pdf
State / Rwince / Ifgion
NC
Country
Rockingham
2f. Fax Number:
State / Rwince / Rion
NC
Country
Durham
4e. Fax Number:
10.07KB
C. Project Information and Prior Project History O
1. Project Information
1b. Subdivision name:
(ff appropriate)
Cape Fear Steam Station
1c. Nearest municipality/ town:
Nloncure
2. Project Identification
2a. Property Identification Number:
2b. Property size:
0065269
1,076
2c. Project Address
Street Address
500 CP&L Road
Address Line 2
city
State / Rwince / Rion
Moncure
NC
Postal / Zip Code
Country
27559
Chatham
3. Surface Waters
3a. Name of the nearest body of water to proposed project:*
Cape Fear River
3b. Water Resources Classification of nearest receiving water:*
Class B

3c. What river basin(s) is your project located in?*
Cape Fear
3d. Please provide the 12-digit HUC in which the project is located.
030300040104
4. Project Description and History
4a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application:*
Based on a 2017 evaluation performed there were several conditions wfiere the earthen embankment section of the Buckhorn Lake Dam and the related East Abutment Wall failed to
meet the minimum criteria set forth in the Duke Energy Master Programmatic Document. In response, in February 2020, Duke Energy requested that Wood develop recommendations
and a design to improve the factor of safety (FOS) on the downstream slopes of the embankment, as well as to lessen the lateral forces on the Eastern Abutment Wall.
4b. Have Corps permits or DWR certifications been obtained for this project (including all prior phases) in the past?*
r Yes r• No r Unknown
4d. Attach an 8 1/2 X 11 excerpt from the most recent version of the USGS topographic map indicating the location of the project site. (for DWR)
BuckhornDam_SiteMap_09102020. pdf
220.23KB
4e. Attach an 8 1/2 X 11 excerpt from the most recent version of the published County NRCS Soil Survey map depicting the project site. (for DWR)
WSS Soils Map.PDF 716.84KB
4f. List the total estimated acreage of all existing wetlands on the property:
4g. List the total estimated linear feet of all existing streams on the property:
4h. Explain the purpose of the proposed project:*
Based on the results of Wood's analyses, the crest of the dam adjacent to the ogee is proposed to be lowered by approximately 3 to 4 feet from elevation 170 to 171 feet National
Geodetic Vertical Datum (NGVD) 88 to an elevation of 167 feet NGVD88. Wood notes that this elevation is approximately 1 foot above the calculated 100-year flood elevation of the
Cape Fear River.
To achieve the proposed grades, the existing observation platform (Flat concrete platform with handrails adjacent to ogee section) Will be removed, along with the ashlar pavement. As
the observation platform appears to be founded on the ashlar surfacing, and extends below the proposed crest elevation of 167 feet NGVD88 in the immediate vicinity of the Eastern
Abutment Wall, the crest of the dam will need to be re-established after the demolition of the platform and the ashlar surface is complete. Therefore, several rows of gabion baskets
filled with aggregate will be utilized to reach the proposed crest elevation of 167 feet.
The lowered crest Will extend northeast for a distance of approximately 85 feet, at which point the grades will slope upward at a grade of approximately 11 horizontal to 1 vertical
(11 H:1 V) wfiere it will meet the existing crest near the toe access roadway at approximately elevation 172 feet NGVD88. By lowering the crest to the proposed elevation, the upstream
slope of the affected area Will be flattened from 1.91-1:1 V to 3.311:1V, while the downstream slopes will be flattened from 1.91d:1V to approximately 2.41-1:1 V. As the ashlar surface will be
removed in order to allow for the regrading to take place, the regraded portion of the earthen embankment will be resurfaced with North Carolina Department of Transportation
(NCDOT) Class 1 rip rap.
Temporary wetland impacts are expected on the upstream slope of the dam v.here replacement of the ashlar surface with NCDOT Class 1 rip rap will be in close proximity to the
wetlands at the toe of the slope. The area of the temporary wetland impacts is expected to be less than 10077 square feet and is necessary to provide for access to the work area and
the installation of erosion and sediment control measures.
In addition to the temporary wetland impacts, a turbidity curtain is proposed to be installed during construction to prevent sediment from leaving the work area. Installation of the curtain
will occur from the land and it will be removed upon completion of work.
Along with the replacement of the ashlar surface with rip rap, the existing trees at the toe of the downstream slope of the dam will be removed. There are approximately 10 trees larger
than 3 inches in diameter at breast height at the immediate toe of the dam (end of the ashlar surface), along with 2 additional trees within 10-15 feet of the toe that will be removed. The
resulting excavations will be backfilled per the project specifications in accordance with recent guidance from North Carolina Department of Environmental Quality Dam Safety. Wetlands
impacts are not anticipated for this work on the downstream slope.
41. Describe the overall project in detail, including indirect impacts and the type of equipment to be used:*
Temporary impacts to wetlands will total 86 square feet, as a result of erosion and sediment control installation. Equipment to be used during project work will include standard
construction equipment, including excavator, loader and small compaction equipment.
4j. Please upload project drawings for the proposed project.
Buckhorn Dam Modification - Temporary Wetland Impact 11 x17.pdf 627.45KB
5. Jurisdictional Determinations
5a. Have the wetlands or streams been delineated on the property or proposed impact areas?*
r: Yes r No r Unknown
Comments:
5b. If the Corps made a jurisdictional determination, what type of determination was made?*
r Preliminary r Approved 6 Not Verified r Unknown r N/A
Corps AID Number:
5c. If 5a is yes, who delineated the jurisdictional areas?
Name (if known): Josh Witherspoon

Agency/Consultant Company: Wood Environment & Infrastructure Solutions
Other: formerly Amec Foster Wheeler
5d1. Jurisdictional determination upload
Wetland A- WET.pdf 219.23KB
6. Future Project Plans
6a. Is this a phased project?*
r Yes r No
Are any other NWP(s), regional general permit(s), or individual permits(s) used, or intended to be used, to authorize any part of the proposed project or related activity?
WA
D. Proposed Impacts Inventory
1. Impacts Summary
1a. Where are the impacts associated with your project? (check all that apply):
W Wetlands r Streams -tributaries r Buffers
r Open Waters r Pond Construction
2. Wetland Impacts
a. Site #* (?) 2a1 Reason (?) 2b. Impact type * M 2c. Type of W.* 2d. W. name * 2e. Forested * 2f. Type of 2g. Impact
Jurisdicition*(?) area*
_11
t
nd A E&SC installation T ff
mland Hardwood Forest Wetland A t
Corps 0.002
(acres)
2g. Total Temporary Wetland Impact
0.002
2g. Total Wetland Impact
0.002
2h. Comments:
E. Impact Justification and Mitigation
1. Avoidance and Minimization
2g. Total Permanent Wetland Impact
0.000
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project:
Impacts are temporary and less than 100th of acre
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques:
Impacts are temporary and less than 100th of an acre
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for impacts to Waters of the U.S. or Waters of the State?
r Yes r No
2b. If this project DOES NOT require Compensatory Mitigation, explain why:
Impacts are temporary and less than 100th of an acre (86 square feet of temporary impacts).
F. Stormwater Management and Diffuse Flow Plan (required by DWR) u
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules?
r Yes r No
If no, explain why:
No regulated buffer.
2. Stormwater Management Plan
2a. Is this a NCDOT project subject to compliance with NCDOT's Individual NPDES permit NCS000250?*
r Yes r No

2b. Does this project meet the requirements for low density projects as defined in 15A NCAC 02H .1003(2)?
r Yes r No
Comments:
WA
G. Supplementary Information
1. Environmental Documentation
la. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land?*
r Yes r No
2. Violations (DWR Requirement)
U
2a. Is the site in violation of DWR Water Quality Certification Rules (15A NCAC 2H .0500), Isolated Wetland Rules (15A NCAC 2H .1300), or DWR Surface Water or Wetland Standards or
Riparian Buffer Rules (15A NCAC 2B .0200)? *
r Yes r No
3. Cumulative Impacts (DWR Requirement)
3a. Will this project result in additional development, which could impact nearby downstream water quality?*
r Yes r No
3b. If you answered "no," provide a short narrative description.
Temporary impact for dam modification. Temporary impacts equals 86 square feet.
4. Sewage Disposal (DWR Requirement)
4a. Is sewage disposal required by DWR for this project?*
r Yes r Nor NIA
5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or habitat?*
r Yes
r No
5b. Have you checked with the USFWS concerning Endangered Species Act impacts?*
r Yes r No
5c. If yes, indicate the USFWS Field Office you have contacted.
Raleigh
5d. Is another Federal agency involved?*
r Yes r No
5e. Is this a DOT project located within Division's 1-8?
r Yes r No
5f. Will you cut any trees in order to conduct the work in waters of the U.S.?
r Yes r No
5g. Does this project involve bridge maintenance or removal?
r Yes r No
5h. Does this project involve the construction/installation of a wind turbine(s)?'
r Yes r No
r Unknown
51. Does this project involve (1) blasting, and/or (2) other percussive activities that will be conducted by machines, such as jackhammers, mechanized pile drivers, etc.?
r Yes r No
5j. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat?
USFWS Information for Planning and Consultation (IPaC) (ecos.fws.gov/ipac/)
Consultation Documentation Upload
Species List_ Raleigh Ecological Services Field Office.pdf 118.27KB
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as an Essential Fish Habitat?*
r Yes r No
6b. What data sources did you use to determine whether your site would impact an Essential Fish Habitat?*
NOAA Habitat Conservation (https://www.habitat.noaa.gov/protection/efh/efhmapper/)

7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal governments have designated as having historic or cultural preservation status?*
r Yes r No
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
State Historic Preservation Office Historic Properties Map (http://gis.ncdcr.gov/hpov4eb/)
7c. Historic or Prehistoric Information Upload
HPOWEB 2.pdf
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-yearfloodplain?*
r Yes r No
8c. What source(s) did you use to make the floodplain determination?*
FEMA Flood Map Service Center (https://msc.fema.gov/portal/search).
Miscellaneous
Comments
4.63MB
C^)
Miscellaneous attachments not previously requested.
Document1.pdf 10.07KB
Signature U
*
W By checking the box and signing below, I certify that:
• The project proponent hereby certifies that all information contained herein is true, accurate, and complete to the best of my knowledge and belief; and
• The project proponent hereby requests that the certifying authority review and take action on this CWA 401 certification request Within the applicable reasonable period of time.
• I have given true, accurate, and complete information on this form;
• I agree that submission of this PCN form is a "transaction" subject to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act");
• I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act');
• I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written signature; AND
• I intend to electronically sign and submit the PCN form.
Full Name:
Richard G. Harmon
Signature 'Al
Br�[T yyitor�
Date
1/14/2021

^_
© OpenStreetMap (and)contributors, CC-BY-SA
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OHWM2149.99 feet
OHWM1149.07 feet
B0.17 acre
A0.3 acre
C0.03 acre
DP UP DP WET
Figure No.
BY: RSK MAP PROJECTION: GCS WGS 1894
PREPARED: Friday, November 13, 2015 SOURCE: ArcGIS Base Data: 1 June 2014
FILE: \\dhm-fs1\Energy\Projects\Duke\2015\Carolinas Natural Resources Surveys\16 Sites\GIS
4
0 0.01 0.02Miles
Although every effort has been made to ensure the accuracy of information, errors and conditions originating from the physicalsources used to develop the database may be reflected in the data supplied. The requestor must be aware of data conditions andultimately bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collectionmethodology, currency of data, and other conditions specific to certain data.
TITLE:
Legend
Study Area
!(Wetlands Points
^_Wetland Data Points
!>OHWMWetlands
Buckhorn DamChatham County, NCFigure 5 - Jurisdictional Waters Map 5
The map shown here has been created with all due and reasonable care and is strictly for use with AMEC project number 7810150295. AMEC assumes no liability, direct or indirect, whatsoever or any such third party or unintended use.
¯
CHECK EDBY:DATE:PROJECT NO:FI GURE NO:1
BU CK H OR N D AM MO DIFIC ATI O NS SIT E LO CATION MA PErosion a nd Sedim en t Con tr ol Pl anCHATHAM CO UN T Y, N OR TH C AR OL INA0500250
Fee t
Im a ge So u rce : So u rce s: Es ri , H ER E , G ar mi n, In term a p, i nc re me n t P Co rp ., GEB C O, U S GS, FAO, N PS , NR C A N, Ge o Ba se , IG N, K ad a ste r N L, Ord n a nc e S ur ve y, E sriJapan, M ET I, E sri C h in a (H o ng Ko n g), (c) Op e nS tre etM ap co n trib u tor s, an d th e GIS U se r C o mm un i ty
^_
NO RT H C A R OLIN A
Pr oje ct L oca ti on (C ha tha m Count y)
LEGEN D
LI MIT S O F DISTU RBANCE 781 22 00 43 4AP09/11/2 02 0
Soil Map—Chatham County, North Carolina, and Lee County, North Carolina
(Buckhorn Dam)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
11/4/2015
Page 1 of 439335003933900393430039347003935100393550039359003933500393390039343003934700393510039355003935900680300680700681100681500681900682300682700683100683500683900684300
680300 680700 681100 681500 681900 682300 682700 683100 683500 683900 684300
35° 33' 7'' N 79° 0' 48'' W35° 33' 7'' N78° 57' 55'' W35° 31' 36'' N
79° 0' 48'' W35° 31' 36'' N
78° 57' 55'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
0 500 1000 2000 3000
Feet
0 250 500 1000 1500
Meters
Map Scale: 1:19,900 if printed on A landscape (11" x 8.5") sheet.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at 1:24,000.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Soil Survey Area: Chatham County, North Carolina
Survey Area Data: Version 18, Sep 13, 2015
Soil Survey Area: Lee County, North Carolina
Survey Area Data: Version 13, Sep 24, 2015
Your area of interest (AOI) includes more than one soil survey area.
These survey areas may have been mapped at different scales, with
a different land use in mind, at different times, or at different levels
of detail. This may result in map unit symbols, soil properties, and
interpretations that do not completely agree across soil survey area
boundaries.
Soil map units are labeled (as space allows) for map scales 1:50,000
or larger.
Date(s) aerial images were photographed: Feb 14, 2011—Mar 3,
2011
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
of map unit boundaries may be evident.
Soil Map—Chatham County, North Carolina, and Lee County, North Carolina
(Buckhorn Dam)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
11/4/2015
Page 2 of 4
Map Unit Legend
Chatham County, North Carolina (NC037)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
CeB Cecil gravelly sandy loam, 2 to
6 percent slopes
2.9 0.2%
CeC Cecil gravelly sandy loam, 6 to
10 percent slopes
142.1 8.3%
CeD Cecil gravelly sandy loam, 10 to
15 percent slopes
81.6 4.8%
ChA Chewacla and Wehadkee soils,
0 to 2 percent slopes,
frequently flooded
114.0 6.6%
HeC Helena sandy loam, 6 to 10
percent slopes
16.1 0.9%
LsF Louisa sandy loam, 25 to 45
percent slopes
92.0 5.4%
MrA Merry Oaks-Moncure complex,
0 to 2 percent slopes,
occasionally flooded
37.1 2.2%
PaE Pacolet gravelly sandy loam, 15
to 25 percent slopes
205.1 11.9%
PcA Peawick fine sandy loam, 0 to 2
percent slopes, rarely flooded
1.4 0.1%
RvA Riverview silt loam, 0 to 3
percent slopes, frequently
flooded
156.6 9.1%
W Water 88.8 5.2%
WeB Wedowee sandy loam, 2 to 6
percent slopes
6.0 0.3%
WeC Wedowee sandy loam, 6 to 10
percent slopes
10.5 0.6%
WeD Wedowee sandy loam, 10 to 15
percent slopes
10.8 0.6%
WeE Wedowee sandy loam, 15 to 25
percent slopes
53.5 3.1%
Subtotals for Soil Survey Area 1,018.5 59.3%
Totals for Area of Interest 1,717.5 100.0%
Lee County, North Carolina (NC105)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
CfB Cecil fine sandy loam, 2 to 8
percent slopes
147.4 8.6%
CfD Cecil fine sandy loam, 8 to 15
percent slopes
72.5 4.2%
Ch Chewacla silt loam, 0 to 2
percent slopes, frequently
flooded
37.4 2.2%
Soil Map—Chatham County, North Carolina, and Lee County, North Carolina Buckhorn Dam
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
11/4/2015
Page 3 of 4
Lee County, North Carolina (NC105)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
Cp Congaree silt loam, 0 to 2
percent slopes, frequently
flooded
22.7 1.3%
DuB Durham loamy sand, 2 to 8
percent slopes
79.4 4.6%
PaF Pacolet fine sandy loam, 15 to
40 percent slopes
271.0 15.8%
W Water 68.6 4.0%
Subtotals for Soil Survey Area 699.0 40.7%
Totals for Area of Interest 1,717.5 100.0%
Soil Map—Chatham County, North Carolina, and Lee County, North Carolina Buckhorn Dam
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
11/4/2015
Page 4 of 4
10'

A
P
R
O
N
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P12
P13
P11
A 10'
5'
A'
POINT TABLE
POINT NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
NORTHING
651594.86
651586.59
651578.93
651650.76
651664.70
651693.12
651710.61
651702.78
651632.03
651611.29
651609.80
651597.68
651596.29
EASTING
2003169.76
2003182.28
2003225.17
2003257.41
2003265.27
2003270.17
2003231.38
2003203.63
2003169.71
2003165.68
2003165.11
2003170.12
2003168.95
ELEVATION
167.00
167.00
148.30
153.65
155.00
170.00
170.85
161.00
160.96
158.66
158.66
164.50
164.70
DESC
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
SM
SM
AP
CK
CK
10 20 30TENTHSINCHES123
REVISIONDRAWING NO.
DWG TYPE:
JOB NO:
DATE:
SCALE:DES:
DFTR:
CHKD:
ENGR:
APPD:
A
F
E
D
C
B
2 3 4 5 7 86
4 5 7 106
A
F
C
B
REV DATE JOB NO.PROJECT TYPE DES DFTR CHKD ENGR APPD DESCRIPTION
BUCKHORN DAM MODIFICATIONS
DUKE ENERGY ISSUE NO. 502/503
CAPE FEAR STEAM STATION
CHATHAM COUNTY, NORTH CAROLINA
AS SHOWN
DWG
-
7812200434
09/24/2020
EXHIBIT
STATE DAM ID NO.: BUCKHORN DAM: CHATH-022
HAZARD CLASSIFICATION: LOW
NID ID: NC00752
HORIZONTAL CONTROL: NORTH AMERICAN DATUM 1983 (NAD83) - NORTH CAROLINA STATE
PLAN COORDINATE SYSTEM
VERTICAL CONTROL: NORTH AMERICAN VERTICAL DATUM 1988 (NAVD88)
SEAL
DWG SIZE
FOR
TITLE
FILENAME:
8 9
22"x34"
ANSI D
Environment & Infrastructure Solutions
4021 STIRRUP CREEK DRIVE, SUITE 100
DURHAM NC 27703
TEL: [phone]
FAX: [phone]
LICENSURE:
NC ENG: F-1253
NC GEOLOGY: C-247
TEMPORARY WETLAND IMPACT.DWG
PLAN VIEW
N
CAPE FEAR RIVER
E
X
I
S
T
I
N
G

G
R
A
V
E
L

R
O
A
D
EXISTING GRAVEL ROAD
EXTENT OF HDR SURVEY
LEGEND
EXISTING MAJOR CONTOURS
EXISTING MINOR CONTOURS
WOOD LINE
WETLANDS
EXTENTS OF HDR SURVEY
EXISTING GRAVEL ROAD
PROPOSED MAJOR CONTOURS
PROPOSED MINOR CONTOURS
PROPOSED RIP-RAP
PROPOSED PATH (6-IN ABC STONE)
GABION ARMAMENT
HANDRAIL
TEMPORARY WETLAND IMPACT
REFERENCES:
1.WETLAND DELINEATION FROM WOOD ENVIRONMENT & INFRASTRUCTURE SOLUTIONS, INC.
DATED NOVEMBER 2015.
2.SURVEY FROM HDR, DATED DECEMBER, 2017.
WETLANDS
WETLANDS
GABION ARMAMENTPROPOSED DAM CREST ACCESS TEMPORARY
WETLAND IMPACT = 77 SF
TOTAL LIMITS OF DISTURBANCE = 1.1 ACRES
ELEVATION (FT.)ELEVATION (FT.)140
150
160
170
180
190
140
150
160
170
180
190
0+00 0+50 1+00
SM
SM
AP
CK
CK
10 20 30TENTHSINCHES123
REVISIONDRAWING NO.
DWG TYPE:
JOB NO:
DATE:
SCALE:DES:
DFTR:
CHKD:
ENGR:
APPD:
A
F
E
D
C
B
2 3 4 5 7 86
4 5 7 106
A
F
C
B
REV DATE JOB NO.PROJECT TYPE DES DFTR CHKD ENGR APPD DESCRIPTION
BUCKHORN DAM MODIFICATIONS
DUKE ENERGY ISSUE NO. 502/503
CAPE FEAR STEAM STATION
CHATHAM COUNTY, NORTH CAROLINA
AS SHOWN
DWG
-
7812200434
09/24/2020
EXHIBIT
STATE DAM ID NO.: BUCKHORN DAM: CHATH-022
HAZARD CLASSIFICATION: LOW
NID ID: NC00752
HORIZONTAL CONTROL: NORTH AMERICAN DATUM 1983 (NAD83) - NORTH CAROLINA STATE
PLAN COORDINATE SYSTEM
VERTICAL CONTROL: NORTH AMERICAN VERTICAL DATUM 1988 (NAVD88)
SEAL
DWG SIZE
FOR
TITLE
FILENAME:
8 9
22"x34"
ANSI D
Environment & Infrastructure Solutions
4021 STIRRUP CREEK DRIVE, SUITE 100
DURHAM NC 27703
TEL: [phone]
FAX: [phone]
LICENSURE:
NC ENG: F-1253
NC GEOLOGY: C-247
TEMPORARY WETLAND IMPACT.DWG
CROSS-SECTION VIEW
LEGEND
EXISTING GRADE
PROPOSED GRADE
EASTERN EXTENT OF WETLAND
STA:0+17.89
ELEV:161.00
WESTERN EXTENT OF WETLAND
STA:0+14.48
ELEV:160.58
EXISTING GRADE
PROPOSED GRADE
SECTION A-A'
SCALE : AS SHOWN
WETLAND DETERMINATION DATA FORM - Eastern Mountains and Piedmont Wetland A Wet
Project/Site:City/Co.:Sampling Date:
Applicant/Owner:State:NC Sampling Point:
Investigator(s):Section, Township, Range:
Landform: (hillslope, terrace, etc.)Local Relief :Concave Slope (%):0-2
Subregion(LRR/MLRA):LRR P Lat:35.5408 Long:-78.9883 Datum:NA
Soil Map Unit Name:NWI Classification:
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?Yes No Is the Sampled Area
Hydric Soil Present?Yes No within a wetland?Yes No
Wetland Hydrology Present?Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply):Surface Soil Cracks (B6)
Surface Water (A1)True Aquatic Plants (B14)Sparsely Vegetated Concave Surface (B8)
High Water Table (A2)Hydrogen Sulfide Odor (C1)Drainage Patterns (B10)
Saturation (A3)Oxidized Rhizospheres on Living Roots (C3)Moss Trim Lines (B16)
Water Marks (B1)Presence of Reduced Iron (C4)Dry-Season Water Table (C2)
Sediment Deposits (B2)Recent Iron Reduction in Tilled Soils (C6)Crayfish Burrows (C8)
Drift Deposits (B3)Thin Much Surface (C7)Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)Other (Explain in Remarks)Stunted or Stressed Plants (D1)
Iron Deposits (B5)Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (B7)Shallow Aquitard (D3)
Water-Stained Leaves (B9)Microtopographic Relief (D4)
Aquatic Fauna (B13)FAC-Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No Depth (inches):6
Water Table Present? Yes No Depth (inches):0
Saturation Present? Yes No Depth (inches):0 Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Wetland hydrology present. 6+ inches of water in inundated portions of the wetland.
Riverview silt loam (RvA)PFO/PEM
Chatham CountyBuckhorn Dam 10.19.15
Duke Energy WA-7
NAJ. Witherspoon
Floodplain
Data point representative of Wetlands A, B, and C.
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0
VEGETATION (Four Strata) - Use scientific names of plants.Sampling Point:
Tree Stratum (Plot size: 30ft radius)
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.5 Y FACW That Are OBL, FACW, or FAC:6 (A)
2.5 Y FACW Total Number of Dominant
3.Species Across All Strata:6 (B)
4.Percent of Dominant Species
5.That Are OBL, FACW, or FAC:100%(A/B)
6.
7.Prevalence Index worksheet:
8.
10 = Total Cover 0 x 1 =0
50% of total cover:5 20% of total cover:2 FACW species 55 x 2 =110
FAC species 0 x 3 =0
1.15 Y FACW FACU species 0 x 4 =0
2.10 Y FACW UPL species 0 x 5 =0
3.Column Totals:55 (A)110 (B)
4.Prevalence Index = B/A =2.0
5.
6.Hydrophytic Vegetation Indicators:
7.Rapid Test for Hydrophytic Vegetation
8.Dominance Test is > 50%
9.Prevalence Index is ≤ 3.01
10.Morphological Adaptations1 (Provide supporting
25 = Total Cover data in Remarks or on a separate sheet
50% of total cover:12.5 20% of total cover:5 Problematic Hydrophytic Vegetation1 (Explain)
Herb Stratum (Plot size: 30ft radius)
1.10 Y FACW 1 Indicators of hydric soil and wetland hydrology must
2.10 Y FACW be present, unless disturbed or problematic
3.10 Definitions of Four Vegetation Strata:
4.
5.
6.
7.
8.
9.
10.
11.
12.
30 = Total Cover
50% of total cover:15 20% of total cover:6
Woody Vine Stratum (Plot size: 30ft radius)Woody Vines - All woody vines greater than 3.28 ft in height.
1.
2.
3.
4.
5.Hydrophytic
6.Vegetation Yes No
0 = Total Cover Present?
50% of total cover:0 20% of total cover:0
Remarks: (Include photo numbers here or on a separate sheet.)
ERDC/CRREL 2014 Regional Wetland Plant List (Eastern Mountains and Piedmont) used for indicator status.
Hydrophytic vegetation present
Betula nigra
Dominance Test Worksheet:
Number of Dominant Species
Number of Dominant Species

Total % Cover of: Multiply
Boehmeria cylindrica
WA-7
Platanus occidentalis
Fraxinus pennsylvanica
OBL species
Carex sp.
Platanus occidentalis
Sapling/Shrub Stratum (Plot size: 30ft radius)
Betula nigra
Tree - Woody plants, excluding vines, 3 in. (7.6 cm) or
more in diameter at breast height (DBH), regardless of
height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non-woody) plants, regardless of
size, and woody plants less than 3.28 ft tall.
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators).
Depth
(inches)%%Type1 Loc2 Texture
0-4 100 SL
4-12 85 15 C M C
12-16 100 S
16-18 100 FSL
1Type C = Concentration, D = depletion, RM = Reduced Matrix, MS = Masked Sand Grains 2Location: PL = Pore Lining, M = Matrix
Hydric Soil Indicators:Indicators for Problematic Hydric Soils3:
Histosol (A1)Dark Surface (S7)2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)Polyvalue Below Surface (S8) (MLRA 147, 148)Coatal Prairie Redox (A16)
Black Histic (A3)Thin Dark Surface (S9) (MLRA 147, 148)(MLRA 147, 148)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Piedmont Floodplain Soils (F19)
Stratified Layers (A5)Depleted Matrix (F3)(MLRA 136, 147)
2 cm Muck (A10) (LRR N)Redox Dark Surface (F6)Very Shallow Dark Surface (TF12)
Depleted Below Dark Surface (A11)Depleted Dark Surface (F7)Other (Explain in Remarks)
Thick Dark Surface (A12)Redox Depressions (F8)
Sandy Mucky Material (S1) Iron-Manganese Masses (F12) (LRR N, MLRA 136)
(LRR N, MLRA 147, 148)Umbric Surface (F13) (MLRA 136, 122)3Indicators of hydrophytic vegetation and
Sandy Gleyed Matrix (S4)Piedmont Floodplain Soils (F19) (MLRA 148)wetland hydrology must be present,
Sandy Redox (S4)Red Parent Material (F21) (MLRA 127, 147)unless disturbed or problematic.
Stripped Matrix (S5)
Restrictive Layer (if observed):
Type:
Depth (inches):Hydric Soil Present? Yes No
Remarks:
Hydric soil present.
WA-7
Matrix
RemarksColor (moist)Color (moist)
Redox Features
10YR 3/1
10YR 5/1
10Y 4/1
10Y 4/1
5YR 4/6
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0
WETLAND DETERMINATION DATA FORM - Eastern Mountains and Piedmont Wetland A Up
Project/Site:City/Co.:Sampling Date:
Applicant/Owner:State:NC Sampling Point:
Investigator(s):Section, Township, Range:
Landform: (hillslope, terrace, etc.)Local Relief :Concave Slope (%):2-4
Subregion(LRR/MLRA):LRR P Lat:35.5409 Long:-78.9884 Datum:NA
Soil Map Unit Name:NWI Classification:
Are climatic/hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes No
Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?Yes No Is the Sampled Area
Hydric Soil Present?Yes No within a wetland?Yes No
Wetland Hydrology Present?Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply):Surface Soil Cracks (B6)
Surface Water (A1)True Aquatic Plants (B14)Sparsely Vegetated Concave Surface (B8)
High Water Table (A2)Hydrogen Sulfide Odor (C1)Drainage Patterns (B10)
Saturation (A3)Oxidized Rhizospheres on Living Roots (C3)Moss Trim Lines (B16)
Water Marks (B1)Presence of Reduced Iron (C4)Dry-Season Water Table (C2)
Sediment Deposits (B2)Recent Iron Reduction in Tilled Soils (C6)Crayfish Burrows (C8)
Drift Deposits (B3)Thin Much Surface (C7)Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)Other (Explain in Remarks)Stunted or Stressed Plants (D1)
Iron Deposits (B5)Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (B7)Shallow Aquitard (D3)
Water-Stained Leaves (B9)Microtopographic Relief (D4)
Aquatic Fauna (B13)FAC-Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Wetland hydrology was not present.
Chatham CountyBuckhorn Dam 10.19.15
Duke Energy WA-7
NAJ. Witherspoon
Floodplain
Data point representative of upland adjacent to Wetlands A, B, and C.
Riverview silt loam (RvA)UPL
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0
VEGETATION (Four Strata) - Use scientific names of plants.Sampling Point:
Tree Stratum (Plot size: 30ft radius)
Absolute
% Cover
Dominant
Species?
Indicator
Status
1.20 Y FACW That Are OBL, FACW, or FAC:6 (A)
2.15 Y FACW Total Number of Dominant
3.5 FAC Species Across All Strata:6 (B)
4.Percent of Dominant Species
5.That Are OBL, FACW, or FAC:100%(A/B)
6.
7.Prevalence Index worksheet:
8.
40 = Total Cover 0 x 1 =0
50% of total cover:20 20% of total cover:8 FACW species 65 x 2 =130
FAC species 40 x 3 =120
1.25 Y FACW FACU species 0 x 4 =0
2.10 Y FAC UPL species 0 x 5 =0
3.5 FACW Column Totals:105 (A)250 (B)
4.Prevalence Index = B/A =2.4
5.
6.Hydrophytic Vegetation Indicators:
7.Rapid Test for Hydrophytic Vegetation
8.Dominance Test is > 50%
9.Prevalence Index is ≤ 3.01
10.Morphological Adaptations1 (Provide supporting
40 = Total Cover data in Remarks or on a separate sheet
50% of total cover:20 20% of total cover:8 Problematic Hydrophytic Vegetation1 (Explain)
Herb Stratum (Plot size: 30ft radius)
1.15 Y FAC 1 Indicators of hydric soil and wetland hydrology must
2.10 Y FAC be present, unless disturbed or problematic
3.Definitions of Four Vegetation Strata:
4.
5.
6.
7.
8.
9.
10.
11.
12.
25 = Total Cover
50% of total cover:12.5 20% of total cover:5
Woody Vine Stratum (Plot size: 30ft radius)Woody Vines - All woody vines greater than 3.28 ft in height.
1.
2.
3.
4.
5.Hydrophytic
6.Vegetation Yes No
0 = Total Cover Present?
50% of total cover:0 20% of total cover:0
Remarks: (Include photo numbers here or on a separate sheet.)
ERDC/CRREL 2014 Regional Wetland Plant List (Eastern Mountains and Piedmont) used for indicator status.
Hydrophytic vegetation present
Tree - Woody plants, excluding vines, 3 in. (7.6 cm) or
more in diameter at breast height (DBH), regardless of
height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non-woody) plants, regardless of
size, and woody plants less than 3.28 ft tall.
Platanus occidentalis
Lonicera japonica
WA-7
Platanus occidentalis
Microstegium vimineum
OBL species
Fraxinus pennsylvanica
Sapling/Shrub Stratum (Plot size: 30ft radius)
Asimina triloba

Total % Cover of: Multiply
Quercus phellos
Betula nigra
Dominance Test Worksheet:
Number of Dominant Species
Number of Dominant Species
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators).
Depth
(inches)%%Type1 Loc2 Texture
0-2 100 L
2-10 90 10 D M CL
10-18 90 10 D M CSL
1Type C = Concentration, D = depletion, RM = Reduced Matrix, MS = Masked Sand Grains 2Location: PL = Pore Lining, M = Matrix
Hydric Soil Indicators:Indicators for Problematic Hydric Soils3:
Histosol (A1)Dark Surface (S7)2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)Polyvalue Below Surface (S8) (MLRA 147, 148)Coatal Prairie Redox (A16)
Black Histic (A3)Thin Dark Surface (S9) (MLRA 147, 148)(MLRA 147, 148)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Piedmont Floodplain Soils (F19)
Stratified Layers (A5)Depleted Matrix (F3)(MLRA 136, 147)
2 cm Muck (A10) (LRR N)Redox Dark Surface (F6)Very Shallow Dark Surface (TF12)
Depleted Below Dark Surface (A11)Depleted Dark Surface (F7)Other (Explain in Remarks)
Thick Dark Surface (A12)Redox Depressions (F8)
Sandy Mucky Material (S1) Iron-Manganese Masses (F12) (LRR N, MLRA 136)
(LRR N, MLRA 147, 148)Umbric Surface (F13) (MLRA 136, 122)3Indicators of hydrophytic vegetation and
Sandy Gleyed Matrix (S4)Piedmont Floodplain Soils (F19) (MLRA 148)wetland hydrology must be present,
Sandy Redox (S4)Red Parent Material (F21) (MLRA 127, 147)unless disturbed or problematic.
Stripped Matrix (S5)
Restrictive Layer (if observed):
Type:
Depth (inches):Hydric Soil Present? Yes No
Remarks:
Hydric soil was not present.
10YR 3/2
10YR 4/6
10YR 4/6
10YR 5/3
5YR 2.5/1
WA-7
Matrix
RemarksColor (moist)Color (moist)
Redox Features
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0
4k(�
United States Department of the Interior
FISH AND WILDLIFE SERVICE
Raleigh Ecological Services Field Office
Post Office Box 33726
Raleigh, NC 27636-3726
Phone: [phone] Fax: [phone]
In Reply Refer To:
Consultation Code: 04EN2000-2019-SLI-0222
Event Code: 04EN2000-2021-E-01074
Project Name: Buckhorn Dam
January 14, 2021
Subject: Updated list of threatened and endangered species that may occur in your proposed
project location or may be affected by your proposed project
To Whom It May Concern:
The species list generated pursuant to the information you provided identifies threatened,
endangered, proposed and candidate species, as well as proposed and final designated critical
habitat, that may occur within the boundary of your proposed project and/or may be affected by
your proposed project. The species list fulfills the requirements of the U.S. Fish and Wildlife
Service (Service) under section 7(c) of the Endangered Species Act (Act) of 1973, as amended
(16 U.S.C. 1531 et seq.).
New information based on updated surveys, changes in the abundance and distribution of
species, changed habitat conditions, or other factors could change this list. Please feel free to
contact us if you need more current information or assistance regarding the potential impacts to
federally proposed, listed, and candidate species and federally designated and proposed critical
habitat. Please note that under 50 CFR 402.12(e) of the regulations implementing section 7 of the
Act, the accuracy of this species list should be verified after 90 days. This verification can be
completed formally or informally as desired. The Service recommends that verification be
completed by visiting the ECOS-IPaC website at regular intervals during project planning and
implementation for updates to species lists and information. An updated list may be requested
through the ECOS-IPaC system by completing the same process used to receive the enclosed list.
Section 7 of the Act requires that all federal agencies (or their designated non-federal
representative), in consultation with the Service, insure that any action federally authorized,
funded, or carried out by such agencies is not likely to jeopardize the continued existence of any
federally -listed endangered or threatened species. A biological assessment or evaluation may be
prepared to fulfill that requirement and in determining whether additional consultation with the
Service is necessary. In addition to the federally -protected species list, information on the
species' life histories and habitats and information on completing a biological assessment or

01/14/2021 Event Code: 04EN2000-2021-E-01074
evaluation and can be found on our web page at http://www.fws.gov/raleigh. Please check the
web site often for updated information or changes
If your project contains suitable habitat for any of the federally -listed species known to be
present within the county where your project occurs, the proposed action has the potential to
adversely affect those species. As such, we recommend that surveys be conducted to determine
the species' presence or absence within the project area. The use of North Carolina Natural
Heritage program data should not be substituted for actual field surveys.
If you determine that the proposed action may affect (i.e., likely to adversely affect or not likely
to adversely affect) a federally -protected species, you should notify this office with your
determination, the results of your surveys, survey methodologies, and an analysis of the effects
of the action on listed species, including consideration of direct, indirect, and cumulative effects,
before conducting any activities that might affect the species. If you determine that the proposed
action will have no effect (i.e., no beneficial or adverse, direct or indirect effect) on federally
listed species, then you are not required to contact our office for concurrence (unless an
Environmental Impact Statement is prepared). However, you should maintain a complete record
of the assessment, including steps leading to your determination of effect, the qualified personnel
conducting the assessment, habitat conditions, site photographs, and any other related articles.
Please be aware that bald and golden eagles are protected under the Bald and Golden Eagle
Protection Act (16 U.S.C. 668 et seq.), and projects affecting these species may require
development of an eagle conservation plan (http://www.fws.gov/windenergy/
eagle_guidance.html). Additionally, wind energy projects should follow the wind energy
guidelines (http://www.fws.gov/windenergy/) for minimizing impacts to migratory birds and
bats.
Guidance for minimizing impacts to migratory birds for projects including communications
towers (e.g., cellular, digital television, radio, and emergency broadcast) can be found at: http://
www.fws.gov/migratorybirds/CurrentBirdlssues/Hazards/towers/towers.htm; http://
www.towerkill.com; and http://www.fws.gov/migratorybirds/CurrentBirdIssues/Hazards/
towers/comtow.html.
Not all Threatened and Endangered Species that occur in North Carolina are subject to section 7
consultation with the U.S Fish and Wildlife Service. Atlantic and shortnose sturgeon, sea
turtles,when in the water, and certain marine mammals are under purview of the National Marine
Fisheries Service. If your project occurs in marine, estuarine, or coastal river systems you should
also contact the National Marine Fisheries Service, http://www.nmfs.noaa.gov/
We appreciate your concern for threatened and endangered species. The Service encourages
Federal agencies to include conservation of threatened and endangered species into their project
planning to further the purposes of the Act. Please include the Consultation Tracking Number in
the header of this letter with any request for consultation or correspondence about your project
that you submit to our office. If you have any questions or comments, please contact John Ellis
of this office at [e-mail].

01/14/2021 Event Code: 04EN2000-2021-E-01074
Attachment(s):
• Official Species List

01/14/2021 Event Code: 04EN2000-2021-E-01074
Official Species List
This list is provided pursuant to Section 7 of the Endangered Species Act, and fulfills the
requirement for Federal agencies to "request of the Secretary of the Interior information whether
any species which is listed or proposed to be listed may be present in the area of a proposed
action".
This species list is provided by:
Raleigh Ecological Services Field Office
Post Office Box 33726
Raleigh, NC 27636-3726
[phone]

01/14/2021 Event Code: 04EN2000-2021-E-01074 2
Project Summary
Consultation Code: 04EN2000-2019-SLI-0222
Event Code: 04EN2000-2021-E-01074
Project Name: Buckhorn Dam
Project Type: DAM
Project Description: Dam maintenance
Project Location:
Approximate location of the project can be viewed in Google Maps: https://
www.google.com/maps/(a)35.540258297756026,-78.98902110127108,14z
Counties: Chatham and Lee counties, North Carolina

01/14/2021 Event Code: 04EN2000-2021-E-01074 3
Endangered Species Act Species
There is a total of 3 threatened, endangered, or candidate species on this species list.
Species on this list should be considered in an effects analysis for your project and could include
species that exist in another geographic area. For example, certain fish may appear on the species
list because a project could affect downstream species.
IPaC does not display listed species or critical habitats under the sole jurisdiction of NOAA
Fisheries1, as USFWS does not have the authority to speak on behalf of NOAA and the
Department of Commerce.
See the "Critical habitats" section below for those critical habitats that lie wholly or partially
within your project area under this office's jurisdiction. Please contact the designated FWS office
if you have questions.
NOAA Fisheries, also known as the National Marine Fisheries Service (NMFS), is an
office of the National Oceanic and Atmospheric Administration within the Department of
Commerce.
Birds
NAME
Red -cockaded Woodpecker Picoides borealis
No critical habitat has been designated for this species.
Species profile: https://ecos.fws.gov/ecp/species/7614
Fishes
NAME
612KY 80
Endangered
STATUS
Cape Fear Shiner Notropis mekistocholas Endangered
There is final critical habitat for this species. The location of the critical habitat is not available.
Species profile: https:Hecos.fws.gov/ecp/species/6063
Flowering Plants
NAME
Harperella Ptilimnium nodosum
No critical habitat has been designated for this species.
Species profile: https:Hecos.fws.gov/ecp/species/3739
STATUS
Endangered
Critical habitats
THERE ARE NO CRITICAL HABITATS WITHIN YOUR PROJECT AREA UNDER THIS OFFICE'S
JURISDICTION.

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DWR Pre-Fil ing Meeting Req u est Form
ID#*Ve rsion *
Re gional Office *
Re v ie we r List *
Contact Name *
Contact Email Addre ss *
Proje ct Name *
Proje ct Owne r *
Proje ct County *
Owne r Addre ss:
Is this a transportation proje ct?*
Type (s) of approv al sought from the DWR:
Doe s this proje ct hav e an e xisting proje ct ID#?*
Do you know the name of the staff me mbe r you would like to re que st a me e ting with?
Ple ase giv e a brie f proje ct de scription be low.*
20201908 1
Raleigh Regional Office - [phone]
Stephanie Goss
Pre-Filing Me eting Reque st submitte d 12/8/2020
Richard Harmon
[e-mail]
Buckhorn Dam Modifications
Duke Energy
Chatham
City
Eden
State / Province / Region
NC
Postal / Zip Code
27288
Country
United States
Street Address
864 South Edgewood Road
Address Line 2
Yes No
401 Water Quality Certification -
Regular
401 Water Quality Certification -
Express
Individual Permit Modification
Shoreline Stabilization
Yes No
Please give a couple of dates you are available for a meeting.
On behalf of Duke Energy, Wood Environment & Infrastructure
Solutions, Inc. (Wood) is requesting your review of proposed dam
repairs (modifications) at the Buckhorn Lake Dam (State ID CHATH-
022), Cape Fear Steam Station, Chatham County, North CBased on
a 2017 evaluation performed by Wood (then Amec Foster Wheeler)
there were several conditions where the earthen embankment section
of the Buckhorn Lake Dam and the related East Abutment Wall failed
to meet the minimum criteria set forth in the Duke Energy Master
Programmatic Document. In response, in February 2020, Duke
Energy requested that Wood develop recommendations and a design
to improve the factor of safety (FOS) on the downstream slopes of
the embankment, as well as to lessen the lateral forces on the
Eastern Abutment Wall.
Based on the results of Wood’s analyses, the crest of the dam
adjacent to the ogee is proposed to be lowered by approximately 3 to
4 feet from elevation 170 to 171 feet National Geodetic Vertical
Datum (NGVD) 88 to an elevation of 167 feet NGVD88. Wood notes
that this elevation is approximately 1 foot above the calculated 100-
year flood elevation of the Cape Fear River.
To achieve the proposed grades, the existing observation platform
(flat concrete platform with handrails adjacent to ogee section) will be
removed, along with the ashlar pavement. As the observation
platform appears to be founded on the ashlar surfacing, and extends
below the proposed crest elevation of 167 feet NGVD88 in the
immediate vicinity of the Eastern Abutment Wall, the crest of the dam
will need to be re-established after the demolition of the platform and
the ashlar surface is complete. Therefore, several rows of gabion
baskets filled with aggregate will be utilized to reach the proposed
crest elevation of 167 feet.
The lowered crest will extend northeast for a distance of
approximately 85 feet, at which point the grades will slope upward at
a grade of approximately 11 horizontal to 1 vertical (11H:1V) where it
will meet the existing crest near the toe access roadway at
approximately elevation 172 feet NGVD88. By lowering the crest to
the proposed elevation, the upstream slope of the affected area will
be flattened from 1.9H:1V to 3.3H:1V, while the downstream slopes
will be flattened from 1.9H:1V to approximately 2.4H:1V. As the ashlar
surface will be removed in order to allow for the regrading to take
place, the regraded portion of the earthen embankment will be
resurfaced with North Carolina Department of Transportation
(NCDOT) Class 1 rip rap.
Temporary wetland impacts are expected on the upstream slope of
the dam where replacement of the ashlar surface with NCDOT Class
1 rip rap will be in close proximity to the wetlands at the toe of the
slope. The area of the temporary wetland impacts is expected to be
less than 100 square feet and is necessary to provide for access to
the work area and the installation of erosion and sediment control
measures.
arolina. The proposed work activities will entail a temporary impact of
less than 100 square feet to waters of the U.S. (WoTUS).
1/8/2021
Ple ase attach the docume ntation you would like to hav e the me e ting about.
Signature
Submittal Date
USACE Ltr Request - signed w graphics-
Buckhorn - 12072020 5.pdf
597.36KB
pdf only
By digitally signing below, I certify that I have read and understood that per the Federal Clean Water Act Section
401 Certification Rule the following statements:

· This form completes the requirement of the Pre-Filing Meeting Request in the Clean Water Act Section 401 Certification
Rule.
· I understand by signing this form that I cannot submit my application until 30 calendar days after this pre-filing
meeting request.
· I also understand that DWR is not required to respond or grant the meeting request.

Your project’s thirty-day clock started upon receipt of this application.  You will receive notification regarding meeting location
and time if a meeting is necessary.  You will receive notification when the thirty-day clock has expired, and you can submit an
application.
12/8/2020