20150610 Ver 3_Stormwater Diversion_20170428

amec
faster
wheeler
Dan River Steam Station
Stormwater Diversion Project and Associated Projects
Section 404 Individual Permit Support
Prepared for:
DUKE
ENERGY,
Dan River Steam Station
Eden, North Carolina
Prepared by:
Amec Foster Wheeler Environment & Infrastructure, Inc.
4021 Stirrup Creek Drive, Suite 100
Durham, North Carolina
April 28, 2017
Project No. 7810160559

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
TABLE OF CONTENTS
Paqe
EXECUTIVE SUMMARY......................................................................................................ES-1
1.0
INTRODUCTION............................................................................................................ 1
1.1
STORMWATER DIVERSION PROJECT..............................................................
1
1.2
DAN RIVER 134 PROJECT..................................................................................
3
1.3
DAN RIVER 131 PROJECT..................................................................................
4
1.4
36 -INCH PIPE CLOSURE PROJECT...................................................................
5
1.5
48 -INCH PIPE CLOSURE PROJECT...................................................................
5
2.0
PROJECT PURPOSE AND NEED.................................................................................
7
2.1
STORMWATER DIVERSION PROJECT..............................................................
7
2.1.1
Purpose..............................................................................................................
7
2.1.2
Need...................................................................................................................
7
2.2
DAN RIVER 134 PROJECT..................................................................................
8
2.2.1
Purpose..............................................................................................................
8
2.2.2
Need...................................................................................................................
8
2.3
DAN RIVER 131 PROJECT..................................................................................
9
2.3.1
Purpose..............................................................................................................
9
2.3.2
Need...................................................................................................................
9
2.4
36 -INCH PIPE CLOSURE PROJECT...................................................................
9
2.4.1
Purpose..............................................................................................................
9
2.4.2
Need...................................................................................................................
9
2.5
48 -INCH PIPE CLOSURE PROJECT..................................................................10
2.5.1
Purpose.............................................................................................................10
2.5.2
Need..................................................................................................................10
3.0
PROPOSED PROJECT DEVELOPMENT.....................................................................11
3.1
STORMWATER DIVERSION PROJECT.............................................................11
3.2
DAN RIVER 134 PROJECT.................................................................................16
3.3
DAN RIVER 131 PROJECT.................................................................................16
4.0
ALTERNATIVES
ANALYSIS.........................................................................................17
4.1
REGULATORY AUTHORITY...............................................................................17
4.2
STORMWATER DIVERSION PROJECT.............................................................18
4.2.1
Pump -around Alternative...................................................................................19
4.2.2
High -volumetric Flow Rate Pump -around Alternative.........................................21
4.2.3
Gravity Alternative..............................................................................................23
4.2.4
Comparison of Action Alternative Impacts..........................................................25
4.2.5
No Build Alternative...........................................................................................28
4.2.6
Avoidance and Minimization of Impacts.............................................................28
4.3
DAN RIVER 134 PROJECT.................................................................................30
4.4
DAN RIVER 131 PROJECT.................................................................................31
4.5
36 -INCH PIPE CLOSURE PROJECT..................................................................31
4.6
48 -INCH PIPE CLOSURE PROJECT..................................................................31

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
6.1
TABLE OF CONTENTS
6.1.1
Stormwater Diversion Project
(Continued)
6.1.2
Dan River 134 Project........................................................................................61
Paqe
5.0 WATERS OF THE U.S./WETLANDS.............................................................................33
Dan River 131 Project........................................................................................62
5.1
STORMWATER DIVERSION PROJECT.............................................................33
36 -Inch Pipe Closure Project
5.1.1
Land Use...........................................................................................................33
48 -Inch Pipe Closure Project
5.1.2
Geology and Topography...................................................................................34
CUMULATIVE IMPACTS.....................................................................................63
5.1.3
Soils...................................................................................................................35
5.1.4
Terrestrial Communities.....................................................................................36
5.1.5
Wetlands............................................................................................................38
5.1.6
Streams.............................................................................................................44
5.1.7
Riparian Buffers.................................................................................................47
5.1.8
Open Waters......................................................................................................48
5.1.9
Floodplains........................................................................................................48
5.1.10
Surface Waters..................................................................................................49
5.1.11
Groundwater......................................................................................................50
5.2
DAN RIVER 134 PROJECT.................................................................................51
5.2.1
Land Use...........................................................................................................52
5.2.2
Geology and Topography...................................................................................52
5.2.3
Soils...................................................................................................................52
5.2.4
Terrestrial Communities.....................................................................................52
5.2.5
Wetlands............................................................................................................53
5.2.6
Streams.............................................................................................................53
5.2.7
Riparian Buffers.................................................................................................53
5.2.8
Open Waters......................................................................................................54
5.2.9
Floodplains........................................................................................................54
5.2.10
Surface Waters..................................................................................................54
5.2.11
Groundwater......................................................................................................55
5.3
DAN RIVER 131 PROJECT.................................................................................55
5.3.1
Land Use...........................................................................................................55
5.3.2
Geology and Topography...................................................................................56
5.3.3
Soils...................................................................................................................56
5.3.4
Terrestrial Communities.....................................................................................56
5.3.5
Wetlands............................................................................................................57
5.3.6
Streams.............................................................................................................57
5.3.7
Riparian Buffers.................................................................................................57
5.3.8
Open Waters......................................................................................................57
5.3.9
Floodplains........................................................................................................57
5.3.10
Surface Waters..................................................................................................58
5.3.11
Groundwater......................................................................................................58
6.0 PROPOSED
WATERS OF THE U.S. IMPACTS...........................................................59
6.1
EXTENT OF IMPACTS........................................................................................59
6.1.1
Stormwater Diversion Project
.............................................................................59
6.1.2
Dan River 134 Project........................................................................................61
6.1.3
Dan River 131 Project........................................................................................62
6.1.4
36 -Inch Pipe Closure Project
.............................................................................62
6.1.5
48 -Inch Pipe Closure Project
.............................................................................62
6.2
CUMULATIVE IMPACTS.....................................................................................63

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
TABLE OF CONTENTS
(Continued)
Paqe
6.2.1
Stormwater Diversion Project.............................................................................63
9.2 AFFECTED ENVIRONMENT...............................................................................76
6.2.2
Dan River 134 Project........................................................................................64
Stormwater Diversion Project.............................................................................76
6.2.3
Dan River 131 Project........................................................................................64
Dan River 134 Project........................................................................................77
7.0 COMPENSATORY MITIGATION..................................................................................66
9.2.3
7.1
MITIGATION REQUIREMENTS..........................................................................66
10.0 ENVIRONMENTAL JUSTICE........................................................................................79
7.2
MITIGATION PLAN..............................................................................................66
BACKGROUND...............................................................................................79
7.2.1
Stormwater Diversion Project.............................................................................66
AFFECTED ENVIRONMENT...........................................................................80
7.2.2
Dan River 134 Project........................................................................................70
Stormwater Diversion Project.............................................................................80
7.2.3
Dan River 131 Project........................................................................................70
Dan River 134 Project........................................................................................80
7.2.4
36 -Inch Pipe Closure Project.............................................................................70
Dan River 131 Project........................................................................................81
7.2.5
48 -Inch Pipe Closure Project.............................................................................70
...........................................................................................................................82
8.0 PROTECTED SPECIES................................................................................................71
11.1
8.1
BACKGROUND...................................................................................................71
11.2
8.2
AFFECTED ENVIRONMENT...............................................................................72
11.2.1
8.2.1
Stormwater Diversion Project.............................................................................72
11.2.2
8.2.2
Dan River 134 Project........................................................................................74
11.2.3
8.2.3
Dan River 131 Project........................................................................................75
12.0 AIR QUALITY................................................................................................................85
9.0 CULTURAL RESOURCES............................................................................................76
12.1
9.1 BACKGROUND...................................................................................................76
9.2 AFFECTED ENVIRONMENT...............................................................................76
9.2.1
Stormwater Diversion Project.............................................................................76
9.2.2
Dan River 134 Project........................................................................................77
9.2.3
Dan River 131 Project........................................................................................78
10.0 ENVIRONMENTAL JUSTICE........................................................................................79
10.1
BACKGROUND...............................................................................................79
10.2
AFFECTED ENVIRONMENT...........................................................................80
10.2.1
Stormwater Diversion Project.............................................................................80
10.2.2
Dan River 134 Project........................................................................................80
10.2.3
Dan River 131 Project........................................................................................81
11.0 NOISE
...........................................................................................................................82
11.1
BACKGROUND...............................................................................................82
11.2
AFFECTED ENVIRONMENT...........................................................................83
11.2.1
Stormwater Diversion Project.............................................................................83
11.2.2
Dan River 134 Project........................................................................................83
11.2.3
Dan River 131 Project........................................................................................84
12.0 AIR QUALITY................................................................................................................85
12.1
BACKGROUND...............................................................................................85
12.2
AFFECTED ENVIRONMENT...........................................................................85
12.2.1
Stormwater Diversion Project.............................................................................85
12.2.2
Dan River 134 Project........................................................................................86
12.2.3
Dan River 131 Project........................................................................................86

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
TABLE OF CONTENTS
(Continued)
Page
REFERENCES.........................................................................................................................87
w

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
LIST OF TABLES
Table 1 Proposed impacts to jurisdictional wetlands, streams, and dredge basin for the
Stormwater Diversion Project, Dan River Steam Station, Rockingham County,
North Carolina
Table 2 Soil types occurring within the Dan River Steam Station, Rockingham County,
North Carolina
Table 3 Wetlands within the Dan River Steam Station, Rockingham County, North Carolina
Table 4 Wetlands within the Stormwater Diversion Project area vicinity, Dan River Steam
Station, Rockingham County, North Carolina
Table 5 Streams within the Dan River Steam Station, Rockingham County, North Carolina
Table 6 Streams within the Stormwater Diversion Project area vicinity, Dan River Steam
Station, Rockingham County, North Carolina
Table 7 Proposed impacts to jurisdictional wetlands, streams, and dredge basin for the
Stormwater Diversion Project, DR 134 Project, DR 131 Project, 36 -Inch Pipe
Closure Project, and 48 -Inch Pipe Closure Project, Dan River Steam Station,
Rockingham County, North Carolina
Table 8 Potential mitigation costs for impacts to waters of the U.S., Stormwater Diversion
Project, DR 134 Project, DR 131 Project, 36 -Inch Pipe Closure Project, and 48 -
Inch Pipe Closure Project, Dan River Steam Station, Rockingham County, North
Carolina
Table 9 Potential for occurrence of federally listed animal and plant species within the Dan
River Steam Station, Rockingham County, North Carolina
Table 10 Identified archaeological sites within a half -mile radius or vicinity of the Dan River
Steam Station, Rockingham County, North Carolina
Table 11 USEPA standard noise levels for various community types
094999.01 v

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
LIST OF FIGURES
Figure 1
Site Location Map
Figure 2
Site Aerial Map
Figure 3a
Preferred Pump Alternative (400 gpm)
Figure 3b
Pump Alternative (49,000 gpm)
Figure 4
Gravity Option
Figure 5
NRCS Soils Map
Figure 6
Jurisdictional Waters Map
Figure 6a
Jurisdictional Waters Map - Vicinity of Stormwater Diversion Project
Figure 7
USGS Topographic Map
Figure 8
USFWS National Wetlands Inventory Map
Figure 9
Floodplain Map
Figure 10
Cultural Resources Map
094999.01 vi

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
LIST OF APPENDICES
Appendix A Previously Issued USACE Permits
Appendix B NC WAM and NC SAM Data Forms
Appendix C Photographic Log
Appendix D Dredge Basin Survey Plat
Appendix E Permit Drawings - Plan View and Cross -Section Drawings
Appendix F USFWS and NCNHP Database Search Queries
094999.01 vii

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
LIST OF ABBREVIATIONS AND ACRONYMS
amsl
above mean sea level
BMPs
best management practices
CAMA
Coal Ash Management Act of 2014
CC
Combined Cycle
CCR
Coal Combustion Residual
CEQ
Council on Environmental Quality
CFR
Code of Federal Regulations
cfs
cubic feet per second
CO
carbon monoxide
CWA
Clean Water Act
dB
decibels
dBA
A -weighted decibels
DFIRM
Digital Flood Insurance Rate Map
DR 131
Dan River 131 Project
DR 134
Dan River 134 Project
ECOS
Environmental Conservation Online System
EO
Executive Order
ESA
Endangered Species Act
E&SC
Erosion & Sediment Control
FEMA
Federal Emergency Management Agency
FIRM
Flood Insurance Rate Map
GIS
geographic information system
gpm
gallons per minute
HDPE
high-density polyethylene
HUC
Hydrologic Unit Code
IP
Individual Permit
IPaC
Information for Planning and Conservation
JD
Jurisdictional Determination
Ldn
Day/Night Levels
MBTA
Migratory Bird Treaty Act
MW
megawatt
NAAQS
National Ambient Air Quality Standards
NCAC
North Carolina Administrative Code
NCDEQ
North Carolina Department of Environmental Quality
NCDMS
North Carolina Division of Mitigation Services
NCDWR
North Carolina Division of Water Resources
NCNHP
North Carolina Natural Heritage Program
NC SAM
North Carolina Stream Assessment Method
NCSHPO
North Carolina State Historic Preservation Office
NC WAM
North Carolina Wetlands Assessment Method
NEPA
National Environmental Policy Act
NFIP
National Flood Insurance Program
NHPA
National Historic Preservation Act
NO2
Nitrogen dioxide
NPDES
National Pollutant Discharge Elimination System
094999.01 viii

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
NRCS
Natural Resources Conservation Service
NRHP
National Register of Historic Places
NWI
National Wetlands Inventory
NWP
Nationwide Permit
OHWM
ordinary high water mark
03
ozone
PAB
Primary Ash Basin
%
percent
PM2.5
fine particulate matter
PM10
particulate matter
PRM
permittee -responsible mitigation
RCP
reinforced concrete pipe
SAB
Secondary Ash Basin
SO2
Sulfur dioxide
SOP
USACE Standard Operating Procedures for the Regulatory Program
UFA
upland flow area
USACE
U.S. Army Corps of Engineers
USEPA
U.S. Environmental Protection Agency
USFWS
U.S. Fish and Wildlife Service
USGS
U.S. Geological Survey
WSA-1
water storage area 1
WSA-2
water storage area 2
WSA-3
water storage area 3
WMP
Wetland Master Plan
094999.01 ix

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Stormwater Diversion Prosect
April 28, 2017
Stormwater Diversion Project and Associated Projects
EXECUTIVE SUMMARY
The Dan River Steam Station is a 620 megawatt (MW) combined cycle (CC) power generating
facility. The station is located near the southeastern side of the City of Eden in northern
Rockingham County. On August 20, 2014, the North Carolina General Assembly passed S 729,
the Coal Ash Management Act of 2014 (CAMA), requiring Duke Energy to phase out wet ash
handling. Under CAMA, all coal ash in the state will be covered by North Carolina's solid waste
laws. At the Dan River Steam Station, Duke Energy has initiated the process to transport some
of the coal ash from the Dan River Steam Station to an existing lined landfill in Jetersville, Virginia.
Presently, the excavation and disposal of coal combustion residual (CCR) materials from
areas of ash fill will entail the diversion of stormwater to facilitate these actions. Specifically, the
implementation of stormwater diversion will require removal of ash from an existing dredge
basin, construction of a soil divider berm, and construction of five pipelines. The proposed
method for implementing stormwater diversion will incorporate a pump -around operation.
The purpose of the Stormwater Diversion Project is to divert stormwater to facilitate the
excavation and disposal of CCR materials from areas of ash fill within the Dan River Steam
Station. This purpose is based on the following needs:
1. Address North Carolina regulatory requirements related to diverting stormwater away from
the Primary Ash Basin (PAB) and Secondary Ash Basin (SAB), and disposal of CCR
materials
2. Provide separation between water that has contacted CCR material (contact water) and
water that has not contacted CCR material (non -contact water)
3. Increase safety by improving site access
The Project components include the following: divider berm; upland flow area (UFA); three water
storage areas (WSA), including WSA-1, WSA-2, and WSA-3; and five Pipe Lines, including Pipe
Lines 1, 2, 3, 4 and 5. The Project must adhere to federal and state water quality standards during
the diversion of stormwater. Therefore, the Project has been designed to provide separation
between water that has contacted CCR material (contact water) and water that has not contacted
ES -1

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
CCR material (non -contact water). Specifically, a divider berm will be created to provide
separation of contact and non -contact water during CCR removal activities. The implementation
of stormwater diversion will require removal of ash from an existing dredge basin (located
between the current footprints of Ash Fill 1 and Ash Fill 2), construction of a soil divider
berm, and construction of five pipelines. The diversion of stormwater is a significant element
of the overall process to excavate and remove CCR materials from the Dan River Steam Station.
The impetus for the alternatives analysis for the Project is the need for the diversion of stormwater,
as linked to the CAMA compliance requirement. The alternatives analysis comprises the set of
three action alternatives for the diversion of stormwater: the pump -around alternative (400 gallons
per minute [gpm]), the high -volumetric flow rate pump -around alternative (49,000 gpm), and the
gravity alternative. These three alternatives were examined with respect to project practicability
limits and the need to avoid and/or minimize impacts to waters of the U.S.
The wetland impacts associated with WSA-2 (0.11 acre) have previously been permitted by the
USACE. This impact is common to all three action alternatives. The proposed wetland impact
associated with WSA-3 (0.19 acre) would occur under all action alternatives. The proposed
impact to the dredge basin (1.89 acres) associated with WSA-1 would also occur under all action
alternatives. The remaining Project component, the UFA, is the only component where the
wetland and stream impacts are dissimilar. Under the pump -around alternative (400 gpm), the
proposed impacts for the UFA due to overflooding would be 0.22 acre of wetlands and 393 linear
feet of stream. No impacts to wetlands or streams would occur under the high -volumetric flow
rate pump -around alternative (49,000 gpm) for the UFA. Similarly, no impacts to wetlands or
streams would occur under the gravity alternative for the UFA. All impacts to wetlands, streams
and the dredge basin under all three action alternatives would be permanent. Although the pump -
around alternative (400 gpm) would have more stream and wetland impacts than the gravity
alternative, the pump -around alternative is the preferred approach because:
1. The gravity pipe option requires routing a pipe below contact water storage area WSA-1.
The NCDEQ has expressed reservations about routing any new pipe beneath a contact
water storage area.
ES -2

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
2. The gravity pipe option requires routing a pipe within an existing ash basin which would
pose the following challenges:
a. Pipe routing would be within an existing CCR unit footprint.
b. Preventing damage of the gravity pipe during adjacent CCR removal activities
could be challenging.
c. Pipe construction would remove existing access routes around the dam.
d. Additional controls such as thrust blocks and anti -flotation counter-measures
would be required.
3. The gravity pipe option would require a breach through the regulatory dam embankment.
4. The gravity pipe system has a higher susceptibility to damage due to proximity of future
construction, greater environmental consequences of a failure due to proximity of contact
water sources, and would require more maintenance when compared to the piping for the
pump -around option.
The high -volumetric flow rate pump -around alternative was considered to be highly problematic
and was subsequently dismissed during the preliminary examination of stormwater diversion
options. The principal difference between the two pump -around alternatives is the rate of water
that would be pumped; i.e., 49,000 gpm under the high -volumetric flow rate pump -around
alternative compared to 400 gpm for the pump -around alternative. Although it is theoretically
possible to provide a pump system with a capacity of 49,000 gpm, such a solution would not be
practical because it would require either several industrial -grade pumps or a large number of
traditional pumps. The costs for pump and fuel are estimated to be approximately $61VI over a
four year period. The power supply would come from a diesel generator which would require
fueling, dual containment, and numerous maintenance checks. As such, power supply would be
problematic and the pumping system would be cost -prohibitive to install and maintain.
Compensatory mitigation for the proposed impacts to the waters of the U.S. is required under the
Section 404 IP. Appropriate avoidance and practicable minimization efforts have been conducted
through the analysis of alternative stormwater diversion plan concepts. However, unavoidable
impacts to onsite waters of the U.S. are necessary to complete the proposed action. The
compensatory mitigation options evaluated for the Project included (1) credit purchase from an
approved private mitigation bank, (2) credit purchase through the North Carolina Division of
ES -3

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
Mitigation Services (NCDMS) In -Lieu Fee Program, (3) in-kind restoration and enhancement of
onsite wetlands and/or stream restoration (PRM), and/or (4) in-kind restoration and enhancement
of offsite wetlands and/or stream restoration. Based on the review of the mitigation options
available, it was determined that credit purchase through the NCDMS In -Lieu Fee Program was
the most viable option to obtain compensatory mitigation for impacts to waters of the U.S. from
the Project. There are no mitigation banks offering wetlands and stream credits in the Roanoke
River basin at the present time. Onsite mitigation and offsite mitigation opportunities were not
explored because the In -Lieu Fee option was already available. The Dan River Steam Station
occurs within Hydrologic Unit Code (HUC) 03010103. This HUC is not subject to higher fees
within the Roanoke River basin. The exact amount of wetland and stream credits to be
purchased, along with the associated cost, will be determined from negotiations with the USACE
during the review of the IP application.
The "affected environment" (Project footprint) for the pump -around operation includes the
aforementioned Project components. The Project will impact jurisdictional wetlands and
streams within the affected environment. However, there will be no adverse effect to land use,
geology and topography, soils, terrestrial communities, floodplains, surface waters (rivers and
lakes), and groundwater within the Project footprint or the steam station property.
Dan River 134 Proiect
The Dan River (DR) 134 Project will entail streambank stabilization for a perennial stream
located along the eastern boundary of the Dan River Steam Station near its confluence with
the Dan River. A portion of the western streambank is eroding with some undercutting
occurring along the toe of the bank. The area of streambank instability occurs between two
culverted road crossings. It is along this area of instability that rip -rap will be placed to
armor the bank to prevent further erosion and stabilize the streambank. Without the
proposed action, the streambank would continue to erode and the stability of the bank would
continue to decline. Undercutting along the toe of the bank would also contribute to the
degradation of the stream. Without the proposed action, the eroded sediment material
would be transported directly downstream to the Dan River.
ES -4

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
The DR 134 Project will result in an impact of 130 linear feet to a perennial stream from the
placement of rip -rap below the Ordinary High Water Mark (OHWM). The rip -rap will be placed
along the western bank of the stream between the two culverted road crossings. The impact
will be permanent. Separate from the proposed action to stabilize the western bank of the
perennial stream was the installation of a culvert at each of the two road crossings of the stream
in March of 2016. The USACE authorized the installation of the culverts through a Nationwide
Permit, NWP 13, (Action ID SAW -2016-00331) issued on February 18, 2016. The impacts to the
stream were identified as temporary in the NWP 13. The impacts are henceforth included in this
IP application as permanent. The culverted road crossings were created to facilitate vehicle and
equipment access to the northern shoreline of the Dan River. The two culverts will not be removed
and the stream will not be restored (via contour reshaping, etc.) to the pre -impact condition. The
impact to the stream from the installation of the two culverts comprised 86 linear feet; i.e., 43
linear feet of impact for the northern road crossing and 43 linear feet of impact for the southern
road crossing. Compensatory mitigation for these impacts will be obtained through the NCDMS
In -Lieu Fee Program. The exact amount of stream credits to be purchased, along with the
associated cost, will be determined from negotiations with the USACE during the review of the IP
application.
Dan River 131 Project
The DR 131 Project is located at the southernmost road crossing of the two culverted road
crossings identified in the DR 134 Project. The proposed action will entail the extension of
the culvert pipe downstream to raise the elevation of the crest of the southern road crossing
and thus provide a more permanent and stable approach for vehicles and equipment. A
permanent and stable approach through the southern road crossing will provide safe access
to the northern shoreline of the Dan River. Access to the northern shoreline is necessary for
scarp repair, as needed, during the closure of the ash basins and the transport of coal ash from
the steam station via a barge loadout area. Therefore, the two road crossings will be maintained
indefinitely for future necessity and emergency access to this area.
The DR 131 Project will result in permanent impact of 15 linear feet to the perennial stream from
the extension downstream of the culvert pipe at the southern road crossing of the stream.
ES -5

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
This impact of 15 linear feet is in addition to the 43 linear feet of impact for the southern
road crossing during the March 2016 culvert installation referenced above (Action ID SAW -
2016 -00331).. Compensatory mitigation for the impact will be obtained through the NCDMS In -
Lieu Fee Program. The exact amount of stream credits to be purchased, along with the
associated cost, will be determined from negotiations with the USACE during the review of the IP
application.
36 -Inch Pipe Closure Project
The 36 -Inch Pipe Closure Project is a previously permitted project at the Dan River Steam
Station. The USACE issued Action ID SAW -2014-01477 on September 29, 2014, for NWP 18.
The issued NWP 18 (Minor Discharges) authorized wetland and stream impacts (permanent)
resulting from overflooding. The project activities entailed closing (grouting) a 36 -inch corrugated
metal pipe that transported flow under the Primary Ash Basin (PAB). The impacts to
jurisdictional waters also included the establishment of a cofferdam for the grout installation.
Pumped flows are discharged to the Dan River through the outfall structure at National
Pollutant Discharge Elimination System (NPDES) outfall 002. Although the project was
previously permitted under NWP, the proposed action will not be completed prior to the close-out
of the ash basins and the expiration of the issued NWP; therefore, the impacts to the jurisdictional
waters have been included in the IP application herein. Compensatory mitigation for the
impacts to 0.098 acre of wetland and 65 linear feet of stream associated with the 36 -Inch
Pipe Closure Project is included in this WMP. Compensatory mitigation for the impacts will be
obtained through the NCDMS In -Lieu Fee Program.
48 -Inch Pipe Closure Project
The 48 -Inch Pipe Closure Project is a previously permitted project at the Dan River Steam
Station. The USACE issued Action ID SAW -2015-01670 on July 31, 2015, for NWP 18. The
issued NWP 18 authorized wetland and stream impacts (permanent) resulting from overflooding.
The project activities entailed the clean-up of ash and the impoundment of stormwater at the
grouted 48 -inch reinforced concrete pipe. Pumped flows are discharged to the Service Water
Settling Pond by way of existing piping to a new storm water outfall. Although the project was
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
previously permitted under NWP, the proposed action will not be completed prior to the close out
of the ash basins and the expiration of the issued NWP; therefore, the impacts to the jurisdictional
waters have been included in the IP application herein. Compensatory mitigation for the
impacts to 0.407 acre of wetlands and 448 linear feet of stream associated with the 48 -Inch
Pipe Closure Project is included in this WMP. Compensatory mitigation for the impacts will be
obtained through the NCDMS In -Lieu Fee Program.
No federally listed, threatened or endangered, animal or plant species were observed by Amec
Foster Wheeler during field reconnaissance at the Dan River Steam Station in 2016. The quality
of the existing habitat in the Project area is presumed to be less than suitable, or not present, for
the listed species with a potential for occurrence in Rockingham County. The listed species
included James spinymussel (Pleurobema collina), Roanoke logperch (Percina rex), and Smooth
coneflower (Echinacea laevigata), each federally endangered. The results of a query of the North
Carolina Natural Heritage Program database included no reported elemental occurrences for
these three species within a one -mile radius of the Dan River Steam Station. The implementation
of stormwater diversion operations would have no effect on these species or their habitat.
Section 404 of the CWA requires that projects authorized by the USACE do not adversely affect
historical properties which are listed or eligible for listing on the National Register of Historic
Places (NRNP). Cultural resources are protected by Section 106 of the National Historic
Preservation Act (NHPA). Amec Foster Wheeler conducted a cultural resource screening to
assess the presence/absence of known cultural resources and NRHP listed resources within a
half -mile search radius of the Dan River Steam Station. The screening included a review of
available data from the North Carolina State Historic Preservation Office (NCSHPO) online Web
GIS Service. No structures or Districts were listed on the NRHP within the Project area or within
a half -mile radius. According to the North Carolina Office of State Archaeology records, at least
a portion of the Project area has been surveyed for archaeological resources; however, no
archaeological remains were discovered during the survey effort. The implementation of
stormwater diversion operations is not expected to have an effect on cultural resources or
historical properties.
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
Environmental justice considers sensitive minority and low-income populations in the community
to determine whether the proposed action and its alternatives may have a disproportionately high
and adverse human health or environmental effect on those populations. Environmental justice
analysis is conducted in compliance with Executive Order (EO) 12898. Amec Foster Wheeler
examined 2015 U.S. Census Bureau (USCB) data to determine minority and low-income
population percentages in the affected area of the Project to facilitate the qualitative assessment
of potential environmental justice impacts from the Project. Rockingham County was found to be
above average for poverty level and Hispanic, black, American Indian and Alaskan native for
several census tracts. None of the two census tracts in Eden had above average levels for these
five categories according to the USCB census tract data for Eden and Rockingham County. The
two census tracts within the City of Eden have not met the criteria for environmental justice. With
these considerations, the implementation of the stormwater diversion operations at the Dan River
Steam Station should have no effect on environmental justice for the surrounding residential
communities.
Noise is sound that is produced at levels that can be harmful and may be considered as unwanted
by the surrounding community, properties and residences. The Noise Control Act of 1972 and
EO 12088 require that federal agencies assess the impact of noise to the environment. Distance
rapidly attenuates noise; therefore, it is not anticipated that the proposed stormwater diversion
operations will occur close enough to existing residential areas to the north and the west of the
Project area to cause disturbances. In addition, stormwater diversion operations would occur
during daytime hours when residents are away from their homes and would be less disturbed
than nighttime hours; therefore, those living in the vicinity of the Dan River Steam Station are not
likely to be affected by noise generated by the Project. Because of the absence of noise -sensitive
land uses (i.e., religious, commercial, retail, residential, recreational and educational) immediately
adjacent to the steam station, the Project is not expected to impact noise -sensitive land uses.
The U.S. Environmental Protection Agency (USEPA) has established National Ambient Air
Quality Standards (NAAQS) for certain criteria pollutants. Air quality standards are also provided
by the North Carolina Department of Environmental Protection (NCDEQ). The implementation of
the stormwater diversion operations at the Dan River Steam Station will not increase air emissions
or exceed regulated standards. Controlled actions will include the control of fugitive dust
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
emissions. Methods to minimize fugitive dust include limiting dusty work on windy days, watering
or sweeping roadways often to ensure that vehicle traffic is not spreading dust, reducing speed
limits on unpaved surfaces to ten miles per hour and enclose storage piles and handling areas if
dusty materials are frequently loaded and unloaded. With these considerations, the stormwater
diversion operations are not expected to impact air quality, either locally or regionally.
ES -9

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
1.0 INTRODUCTION
1.1 STORMWATER DIVERSION PROJECT
The Dan River Steam Station is a 620 megawatt (MW) combined cycle (CC) power generating
facility. The station is located near the southeastern side of the City of Eden in northern
Rockingham County (Figures 1 and 2). The Dan River abuts the southern edge of the station.
On August 20, 2014, the North Carolina General Assembly passed S 729, the Coal Ash
Management Act of 2014 (CAMA), requiring Duke Energy to phase out wet ash handling. Under
CAMA, all coal ash in the state will be covered by North Carolina's solid waste laws. Further,
when coal ash is used as fill to build up land for large construction projects, measures like
groundwater monitoring and liners will be required.
With the passage of CAMA, Duke Energy will follow a timetable to close all its coal ash ponds.
Duke Energy has already responded to reuse the coal ash currently stored at several Duke
Energy plants. Duke Energy is committed to safely dismantling its existing older plants as
part of a complex, multiyear process known as decommissioning and demolition. By the
end of 2013, Duke Energy retired units at nine coal-fired generation sites in North Carolina
and South Carolina. The long-term vision for sites with retired coal units across the system
is to return them to ground level. During the early stages of the decommissioning and
demolition strategy, the company will remove chemicals and other materials, salvage what
equipment it can, recycle and repurpose at other sites, and sell any scrap material. In the
demolition and restoration phases, Duke Energy will safely remove the powerhouse,
chimneys and any auxiliary structures no longer needed. Following this procedure, Duke
Energy will fill, grade and seed disturbed areas. This approach is best suited to ensure
continued safety, security and environmental compliance at the site in the future, both for
the company and the community. Duke Energy will continue to own and steward these
properties, and some of them are home to other types of generation. The decommissioning
project also extends to some of the company's older natural gas -combustion turbine units
across the generation fleet. These sites will move through a similar process as the coal-
fired units.
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
The vast majority of ash generated by Duke Energy is already being managed dry and stored
in on-site, lined landfills. Prior to the promulgation of CAMA, engineering work was
underway to close ash basins at the retired coal plants. The company has accelerated that
work to include closing all ash basins across its six -state service area, both at retired and
operating coal plants. Duke Energy has conducted thorough inspections at all of its facilities
to ensure basins continue operating safely and reliably until closure. There are several
options for closing ash basins. The company's strategy is that site-specific engineering
should help inform the methods used and may include a combination of:
• Excavating and relocating ash to a fully lined structural fill
• Excavating and relocating the ash to a lined landfill (on site or off site)
• Capping the ash with an engineered synthetic barrier system, either in place or after
being consolidated to a smaller area on site
Schedules for closing basins depend significantly on a variety of factors, including state
requirements, the amount of ash at the site, whether plant system conversions are needed
and whether new storage facilities will need to be designed, permitted and constructed.
At the Dan River Steam Station, Duke Energy has initiated the process to transport some of
the coal ash from the Dan River Steam Station to an existing lined landfill in Jetersville, Virginia.
Presently, the excavation and disposal of coal combustion residual (CCR) materials from
areas of ash fill will entail the diversion of stormwater to facilitate these actions. Specifically, the
implementation of stormwater diversion will require removal of ash from an existing dredge
basin, construction of a soil divider berm, and construction of five pipelines. The proposed
method for implementing stormwater diversion will incorporate a pump -around operation.
In summary, stormwater diversion measures will be in place during excavation and disposal
of CCR materials which is estimated to occur over a period of approximately three to five
years. Stormwater diversion measures will be removed and gravity flow will be restored
following completion of CCR excavation and disposal activities. This stormwater diversion
project is vital to comply with state and federal regulations, will facilitate contact and non -
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
contact water separation, and will improve site safety. The stormwater diversion project will
require stream and wetland impacts by necessity.
The discharge of dredged or fill material into waters of the U.S. and most categories of work in
navigable water bodies require U.S. Army Corps of Engineers (USACE) authorization under
Section 404 of the Clean Water Act (CWA). This Wetland Master Plan (WMP) is to provide the
Wilmington District of the USACE with a basis to evaluate and issue an Individual Permit (IP) and
associated certifications for the proposed project (proposed action). The impetus for the
alternatives analysis is the need for the diversion of stormwater, as linked to the requirement to
be in compliance with CAMA.
The purpose of this WMP is to serve as a source of supplemental information for the Section 404
IP application. This document provides documentation of the current ecological and physical
condition of jurisdictional waters and other resources that occur within the project site. The WMP
describes the proposed action in light of the public interest in the new facility. Further, this
document describes the approach to wetland mitigation outlined in the CWA Section 404 (b)(1)
guidelines and followed by the State of North Carolina, to include avoidance, minimization and
compensation. The specific objective of this investigation and the WMP document is to provide
the USACE Wilmington District, the North Carolina Department of Environmental Quality
(NCDEQ), and other commenting and reviewing agencies a basis to evaluate and issue a Section
404 IP and associated certifications for the proposed action.
1.2 DAN RIVER 134 PROJECT
The Dan River (DR) 134 Project will entail streambank stabilization for a perennial stream
located along the eastern boundary of the Dan River Steam Station near its confluence with
the Dan River (Figure 2). The stream is colloquially known as Railroad Branch Creek;
however, for the purpose of the WMP, the feature is referred to as Stream 3 based on prior
Amec Foster Wheeler documentation. A portion of the western streambank is eroding with
some undercutting occurring along the toe of the bank. The area of streambank instability
occurs between two culverted road crossings and focuses on the west bank area. It is along
this area of instability that rip -rap will be placed to armor the bank to prevent further erosion
and stabilize the streambank.
3

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
Separate from the proposed action to stabilize the western bank of Stream 3, but linked to Stream
3 by past activities conducted within this surface water, was the installation of a culvert at each of
the aforementioned road crossings of the stream in March of 2016. The USACE authorized the
installation of the culverts through the NWP 13 (Action ID SAW -2016-00331) issued on February
18, 2016. The impacts to the stream were identified as temporary in the NWP 13. The impacts
are henceforth included in this WMP as permanent. The culverted road crossings were created
to facilitate vehicle and equipment access to the northern shoreline of the Dan River. Access to
the Dan River shoreline is necessary for scarp repair, as needed, during the closure of the ash
basins and the transport of coal ash from the station via a barge loadout area. Therefore, the
road crossings will be maintained indefinitely for future necessity and emergency access to this
area of the station. The two culverts will not be removed and the stream will not be restored (via
contour reshaping, etc.) to the pre -impact condition, including dimension, pattern and profile. The
permanent impacts to Stream 3 from the installation of the two culverts are included in Section
6.1.2 of the WMP.
1.3 DAN RIVER 131 PROJECT
The DR 131 Project is located at the southernmost road crossing of the aforementioned two
culverted road crossings identified in the DR 134 Project (Figure 2). The proposed action
will entail the extension, downstream, of the culvert pipe to raise the elevation of the crest
of the southern road crossing and thus provide a more permanent and stable approach for
vehicles and equipment through this crossing. A permanent and stable approach through
the southern road crossing will provide safe access to the northern shoreline of the Dan
River. The northern and southern culverted road crossings along Stream 3 were established in
March of 2016 to facilitate vehicle and equipment access to the river. Access to the northern
shoreline is necessary for scarp repair, as needed, during the closure of the ash basins and the
transport of coal ash from the steam station via a barge loadout area. Therefore, the road
crossings will be maintained indefinitely for future necessity and emergency access to this area
of the steam station.
4

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
1.4 36 -INCH PIPE CLOSURE PROJECT
The 36 -Inch Pipe Closure Project is a previously permitted project at the Dan River Steam
Station. The USACE issued Action ID SAW -2014-01477 on September 29, 2014, for NWP 18.
The issued NWP 18 (Minor Discharges) authorized wetland and stream impacts (permanent)
resulting from overflooding. The project activities entailed closing (grouting) a 36 -inch corrugated
metal pipe that transported flow under the Primary Ash Basin (PAB). The impacts to
jurisdictional waters also included the establishment of a cofferdam for the grout installation.
Pumped flows are discharged to the Dan River through the outfall structure at National
Pollutant Discharge Elimination System (NPDES) outfall 002. Although the project was
previously permitted under NWP, the proposed action will not be completed prior to the close out
of the ash basins and the expiration of the issued NWP; therefore, the impacts to the jurisdictional
waters have been included in the IP application herein. Compensatory mitigation for the
impacts to wetland and stream areas associated with the 36 -Inch Pipe Closure Project is
included in this WMP. The general location of the project is shown on Figure 2. The stream and
wetland impacts for the project are presented in Section 6.1.4 of the WMP, while the mitigation
discussion is presented in Section 7.2.4. The locations of the affected wetland (Wetland H) and
the affected stream (Stream 4) are shown on Figure 6 of the WMP. A copy of the issued USACE
permit for the 36 -Inch Pipe Closure Project (Action ID SAW -2014-01477) is provided in
Appendix A.
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The 48 -Inch Pipe Closure Project is a previously permitted project at the Dan River Steam
Station. The USACE issued Action ID SAW -2015-01670 on July 31, 2015, for NWP 18. The
issued NWP 18 authorized wetland and stream impacts (permanent) resulting from overflooding.
The project activities entailed the clean-up of ash and the impoundment of stormwater at the
grouted 48 -inch reinforced concrete pipe. Pumped flows are discharged to the Service Water
Settling Pond by way of existing piping to a new storm water outfall. Although the project was
previously permitted under NWP, the proposed action will not be completed prior to the close-out
of the ash basins and the expiration of the issued NWP; therefore, the impacts to the jurisdictional
waters have been included in the IP application herein. Compensatory mitigation for the
impacts to stream and wetland areas associated with the 48 -Inch Pipe Closure Project is
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
included in this WMP. The general location of the project is shown on Figure 2. The stream and
wetland impacts for the project are presented in Section 6.1.5 of the WMP, while the mitigation
discussion is presented in Section 7.2.5. The impacted wetlands and streams are shown on the
Plan View drawing for the 48 -Inch Pipe Closure Project (included in Appendix A), which was
provided to the USACE on July 17, 2015, as part of the Pre -Construction Notification
submital package. The jurisdictional limits of the two impacted wetlands and the three
impacted streams were based on the land survey of these areas by LDSI in July of 2105.
The impacted wetlands and streams were assigned feature identifiers that were specific to
the permitting of the 48 -Inch Pipe Closure Project. As such, they are not included in the set
of jurisdictional waters that comprise the Stormwater Diversion Project, DR 134 Project, and
DR 131 project. A copy of the issued USACE permit for the 48 -Inch Pipe Closure Project
(Action ID SAW -2015-01670) is provided in Appendix A.
N

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
2.0 PROJECT PURPOSE AND NEED
2.1 STORMWATER DIVERSION PROJECT
2.1.1 Purpose
The purpose of the Project (proposed action) is to divert stormwater to facilitate the excavation
and disposal of CCR materials from areas of ash fill within the Dan River Steam Station. The
details of the Project are discussed in Section 3.1 of the WMP (Proposed Project Development).
2.1.2 Need
The purpose of the Project is based on the following needs:
1. Address North Carolina regulatory requirements related to diverting stormwater away from
the PAB and Secondary Ash Basin (SAB), and disposal of CCR materials
2. Provide separation between water that has contacted CCR material (contact water) and
water that has not contacted CCR material (non -contact water)
3. Increase safety by improving site access
North Carolina Regulatory Requirements
The principal action that has accelerated the excavation and removal of CCR materials from coal
ash storage ponds (ash basins) at Duke Energy power generating plants with coal-fired facilities
is the promulgation of CAMA. The bill, enacted on August 20, 2014, requires Duke Energy to
phase out wet ash handling. As such, all coal ash in the state will be covered by North Carolina's
solid waste laws. In conjunction with CAMA, the NCDEQ has amassed comprehensive data
about coal ash facilities statewide. The information has been essential in NCDEQ's prioritization
of closure plans for all 14 facilities with coal ash storage ponds. The Dan River Steam Station is
identified as one of these 14 facilities with coal ash storage ponds. With these considerations,
the Project will address North Carolina regulatory requirements as related to the diversion of
stormwater away from the PAB and SAB, and disposal of CCR materials at the Dan River Steam
Station.
7

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Contact and Non -contact Water Separation
April 28, 2017
Stormwater Diversion Project and Associated Projects
The Project must adhere to federal and state water quality standards during the diversion of
stormwater. Therefore, the Project has been designed to provide separation between water that
has contacted CCR material (contact water) and water that has not contacted CCR material (non -
contact water). Specifically, a divider berm will be created to provide separation of contact and
non -contact water during CCR removal activities. The details of this component of the Project
are presented in Section 3.1 of the WMP.
Increased Site Safety
Duke Energy is expeditiously coordinating removal and disposal of on-site CCR's in lined landfill
facilities. CCR removal effort includes removal of CCR material from Ash Fill 1 by rail to an off-
site lined landfill, construction of the Dan River Landfill in the footprint of Ash Fill 1, and eventually
disposal of ash basin CCR material into the landfill. The proposed divider berm will increase site
safety by providing an additional access route to the Ash Fill 1 Dan River Landfill work area which
will be utilized to facilitate construction of the landfill and disposal of material into the landfill.
2.2 DAN RIVER 134 PROJECT
2.2.1 Purpose
The purpose of the DR 134 Project (proposed action) is to stabilize a portion of the western
streambank of Stream 3 with rip -rap (armoring) to prevent further erosion and increase the
stablity of the streambank. The details of the project are discussed in Section 3.2 of the WMP.
2.2.2 Need
Without the proposed action, the streambank would continue to erode and the stability of
the bank would continue to decline. Undercutting along the toe of the bank would also
contribute to the degradation of the stream. Without the proposed action, the eroded
sediment material would be transported directly downstream to the Dan River.
H

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
2.3 DAN RIVER 131 PROJECT
2.3.1 Purpose
April 28, 2017
Stormwater Diversion Project and Associated Projects
The purpose of the DR 131 Project (proposed action) is to extend the culvert pipe downstream
at the southern road crossing of Stream 3 in order to raise the elevation of the crossing crest
for possible future scarp repairs along the Dan River. The details of the project are discussed
in Section 3.3 of the WMP.
2.3.2 Need
The proposed action will provide a more permanent and stable approach for vehicles and
equipment through this road crossing. A permanent and stable approach through the
southern road crossing will provide safe access to the northern shoreline of the Dan River.
Access to the northern shoreline is necessary for scarp repair, as needed, during the closure of
the ash basins and the transport of coal ash from the steam station via the barge loadout area.
The road crossings will be maintained indefinitely for future necessity and emergency access to
this area of the steam station.
2.4 36 -INCH PIPE CLOSURE PROJECT
2.4.1 Purpose
The project purpose entailed the closing (grouting) of a 36 -inch corrugated metal pipe that
transported flow under the PAB.
2.4.2 Need
The project was necessary to accomplish the clean-up of ash.
9

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
2.5 48 -INCH PIPE CLOSURE PROJECT
2.5.1 Purpose
April 28, 2017
Stormwater Diversion Project and Associated Projects
The project purpose entailed the closing (grouting) of a 48 -inch reinforced concrete pipe.
2.5.2 Need
The project was necessary to accomplish the clean-up of ash.
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
3.0 PROPOSED PROJECT DEVELOPMENT
3.1 STORMWATER DIVERSION PROJECT
The diversion of stormwater will be conducted to facilitate the excavation and disposal of CCR
materials from areas of ash fill at the Dan River Steam Station. The implementation of
stormwater diversion will require removal of ash from an existing dredge basin (located
between the current footprints of Ash Fill 1 and Ash Fill 2), construction of a soil divider
berm, and construction of five pipelines (Figure 3a). The proposed method for implementing
stormwater diversion will incorporate a pump -around operation. The stormwater diversion
measures are estimated to occur over a period of approximately three to five years. These
measures will be removed and gravity flow will be restored following completion of CCR
excavation and disposal activities.
Descriptions of the various Project components are presented below. These Project components,
as areas of work, are also shown on Figure 3a.
Sources of Stormwater Requiring Diversion
The predominant sources of stormwater that currently discharge into the PAB and SAB are
summarized as follows:
1. Existing 36 -inch reinforced concrete pipe (RCP) that discharges flow from the dredge
basin between Ash Fills 1 and 2 into the northwest corner of the Secondary Ash Basin
(SAB)
2. Existing 36 -inch RCP that discharges flow from the wetland adjacent to the ash loadout
area into the northern portion of the SAB
The existing 36 -inch RCP that discharges flow from the dredge basin (Source 1 above) will be
diverted by construction of the proposed divider berm and a pump -around system as described
in the following descriptions for the Divider Berm, Upland Flow Area (UFA), and Pipe Line 1. The
existing 36 -inch RCP that discharges flow from the wetland adjacent to the ash loadout area
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
(Source 2 above) will be capped as described in the following descriptions for Pipe Lines 4 and
5.
Divider Berm
The divider berm is required to separate contact and non -contact water which is vital to reducing
the total amount of contact water requiring treatment. The berm will also improve site safety by
providing another means of ingress/egress to the landfill area. A compacted soil or soil/rock fill
divider berm will be constructed along the northern edge of the dredge basin between Ash Fills 1
and 2. The divider berm will prevent non -contact water from sources draining north of the berm
(UFA) from mixing with potential contact water from sources draining south of the berm (water
storage area 1 [WSA-1]). The divider berm will be graded with a superelevation to drain towards
WSA-1 and will be surfaced with geotextile and aggregate to facilitate vehicular access.
UFA
The UFA is required to separate non -contact water from contact water. The UFA is the area north
of the divider berm and consists of a constructed sump and existing topography. The UFA will be
bounded to the south by the divider berm, to the west by Ash Fill 2, to the east by Ash Fill 1, and
to the north by existing topography.
WSA-1
WSA-1 is an impoundment designed to provide storage volume for potential contact water runoff
from Ash Fills 1 and 2 during removal of CCR from these areas. WSA-1 will also receive pumped
contact water flows from water storage area 2 (WSA-2) and water storage area 3 (WSA-3). WSA-
1 will be bounded to the north by the proposed divider berm, to the west by Ash Fill 2, to the east
by Ash Fill 1, and to the south by the existing dredge dike. Contact water flows will be contained
in WSA-1 until the contact water can be pumped via Pipe Lines 2 and 5 to the on-site tank and
ultimately to the City of Eden for treatment.
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Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
WSA-2
April 28, 2017
Stormwater Diversion Project and Associated Projects
WSA-2 is an existing impoundment designed to control potential contact water seepage from the
PAB. WSA-2 is bounded to the north by the existing dredge dike, to the east by an access road,
to the south by railroad tracks and the PAB, and to the west by topography. Potential contact
water seeps into the WSA-2 area from the Primary Ash Basin. The WSA-2 area will be
periodically inundated from stormwater runoff and then pumped to the SAB. The Project will re-
route pumping of flows from WSA-2 to WSA-1.
Prior work activities conducted at WSA-2 were permitted by the USACE in 2014. The USACE
issued Action ID SAW -2014-01477 on September 29, 2014, for NWP 18. The issued NWP 18
authorized wetland impacts (permanent) resulting from overflooding. The project activities
entailed closing a 36 -inch corrugated metal pipe that transported flow under the PAB. No
additional impacts to waters of the U.S. will be made as part of the previously permitted WSA-2
construction and the implementation of the stormwater diversion operations.
WSA-3
WSA-3 is a proposed impoundment area designed to control potential contact water and provide
diversion of flows away from the ash basins. WSA-3 is bounded to the north by the existing
dredge dike, to the west by existing topography, to the south by railroad tracks and the Secondary
Ash Basin, and to the east by an ash loadout area. Potential contact water runs off from the ash
loadout area to WSA-3. Currently, WSA-3 drains into the SAB by gravity via a pipe underneath
the railroad tracks. The Project will plug the gravity pipe causing inundation of WSA-3 and pump
flows from WSA-3 to WSA-1.
Pige Line 1: UFA to SW 010
Pipe Line 1 will convey non -contact water to a NPDES permitted outfall. Pipe Line 1 will consist
of a pump and pipe system that will convey non -contact water from the UFA to proposed
Stormwater NPDES Outfall SW 010. Proposed Outfall SW 010 will be located along the northern
edge of the property.
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Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Pipe Line 2: WSA-1 to Manifold
April 28, 2017
Stormwater Diversion Project and Associated Projects
Pipe Line 2 will convey contact water to a manifold and ultimately to the City of Eden for treatment.
Pipe Line 2 will convey potential contact water via pumping from WSA-1 south of the proposed
divider berm to the manifold located at the crest of the proposed divider berm. Pipe line 2 will
consist of a new solid -walled HDPE pipe. The section of pipe from WSA-1 to the manifold will be
single -contained because WSA-1 serves as secondary containment. Refer to Pipe Line 5 for a
description of the pipe from the manifold to the leachate storage tank.
Pipe Line 3: WSA-2 to WSA-1
Pipe Line 3 will convey potential contact water to WSA-1 and ultimately to the City of Eden for
treatment. Pipe Line 3 will convey potential contact water via pumping from the wetland north of
the ash basin divider dike (WSA-2) to WSA-1. Pipe Line 3 will consist of a new solid -walled HDPE
pipe. The section of pipe within the confines of WSA-1 and WSA-2 will be single -contained
because the water storage areas serve as secondary containment. Sections of pipe outside the
confines of WSA-1 and WSA-2 will be dual -contained.
PIDe Line 4: WSA-3 to WSA-1
Pipe Line 4 will divert stormwater away from the ash basins and convey potential contact water
to WSA-1 and ultimately to the City of Eden for treatment. Pipe Line 4 will convey potential contact
water via pumping from the wetland adjacent to the ash loadout area (WSA-3) to WSA-1. Pipe
Line 4 will consist of a new solid -walled HDPE pipe. The section of pipe within the confines of
WSA-1 and WSA-3 will be single -contained because the water storage areas serve as secondary
containment. Sections of pipe outside the confines of WSA-1 and WSA-3 will be dual -contained.
The existing 36 -inch RCP that discharges flow from the wetland adjacent to the ash loadout area
into the northern portion of the SAB will be capped to prevent discharge into the SAB.
Pipe Line 5: SAB to Tank
Pipe Line 5 is required to convey contact water to a tank and ultimately to the City of Eden for
treatment. Pipe Line 5 will convey liquids from the SAB to the manifold located at the crest of the
14

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
proposed divider berm and on to the proposed tank. Pipe Line 5 will consist of a new solid -walled
HDPE pipe. The existing 36 -inch RCP that discharges flow from the wetland adjacent to the ash
loadout area into the northern portion of the SAB will be used as a conduit beneath the existing
railroad tracks for the proposed Pipe Line 5. Pipe Line 5 will be sleeved through an orifice in the
pipe cap. The proposed Pipe Line 5 will be extrusion welded to the pipe cap to prevent seepage
into the SAB. The section of pipe within the existing 36 -inch RCP and within WSA-1 will be single -
contained, while other sections of pipe will be dual -contained.
Contact and Non -contact Water Separation
As previously stated herein, a divider berm will provide separation of contact and non -contact
water during CCR removal activities. During removal of CCR from Ash Fill 1, contact water will
drain to a proposed sediment basin located at the southern corner of Ash Fill 1. The proposed
sediment basin will drain by gravity to WSA-1 which will generally be pumped to the storage tank
via Pipe Lines 2 and 5.
Contact water generated during removal of CCR material from the PAB and the SAB is anticipated
to be contained within the Ash Basins before being pumped to the storage tank via Pipe Line 5.
Contact water generated during removal of CCR from Ash Fill 2 will drain by gravity to WSA-1
which will be pumped to the storage tank via Pipe Lines 2 and 5. A portion of the divider berm
will be removed during removal of CCR from Ash Fill 2. A smaller diversion berm consistent with
typical Erosion & Sediment Control (E&SC) measures will be installed to maintain the separation
of contact and non -contact water along the northern edge of the Ash Fill 2 excavation area.
The proposed divider berm may be removed upon completion of CCR removal, ash basin closure,
and ash removal activities, and subsequently restoring gravity drainage and eliminating the need
for pumping to provide dewatering. Any piping through the dredge basin will be removed and a
new drop inlet will be installed at the toe of slope of the existing dredge dike to discharge into the
remaining portion of the existing 36 -inch diameter RCP. This results in effectively moving the
dredge basin drop inlet from its current position to the upstream toe of slope of the existing dredge
dike. The dredge basin will be regraded during final ash removal to promote drainage to the new
15

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
drop inlet. The Dam Decommissioning Plan design includes conveying stormwater from areas
north of the ash basins across the ash basin footprint and discharging into the Dan River.
3.2 DAN RIVER 134 PROJECT
The DR 134 Project will entail streambank stabilization for Stream 3, a perennial stream
located along the eastern boundary of the Dan River Steam Station near its confluence with
the Dan River. Rip -rap (armoring) will be placed along the western streambank of Stream 3 to
prevent further erosion and increase the stablity of the streambank. The area of streambank
instability occurs between two culverted road crossings. Additional details of the project are
presented below.
Initial removal of loose material will be performed to be followed by the placement of geotextile
fabric to provide soil material retention and then covered by gravel and ultimately North Carolina
Department of Transportation Class B rip -rap. The slopes are limited to no steeper than 1.5H:1 V
to limit grading required and reduce the impact to the stream. Along the length of the repair area
a stone toe buttress will be placed into the stream to provide additional protection from erosion at
the toe and sliding of the material into the stream.
3.3 DAN RIVER 131 PROJECT
The DR 131 Project is located at the southernmost road crossing of the two culverted road
crossings of Stream 3 (Figure 2). The proposed action will entail the extension, downstream,
of the culvert pipe to raise the elevation of the crest of the southern road crossing and thus
provide a more permanent and stable approach for vehicles and equipment through this
crossing. The road crossings will be maintained indefinitely for future needs and emergency
access to this area of the steam station.
Crossings are comprised of stone; aggregate and rip -rap. The downstream piped crossing will
be extended to raise the crossing elevation. Backfill around the pipe to complete the crossing will
also be stone.
16

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
4.0
4.1 REGULATORY AUTHORITY
April 28, 2017
Stormwater Diversion Project and Associated Projects
ALTERNATIVES ANALYSIS
In the evaluation of CWA Section 404 permit applications to discharge dredged or fill material into
waters of the U.S. including wetlands, the USACE is required to analyze alternatives that could
achieve purpose and need. The USACE conducts this analysis pursuant to two main
requirements:
1) National Environmental Policy Act of 1969 (NEPA
NEPA requires federal agencies to consider environmental impacts of the proposed actions and
a range of reasonable alternatives to those actions. Reasonable alternatives do not require
consideration of every conceivable variation of an alternative (40 Code of Federal Regulations
[CFR] §1502.14) and must be capable of achieving the basic project goal. The Council on
Environmental Quality (CEQ) describes "reasonable" alternatives as those that are practical or
feasible from the technical or economic standpoint and use common sense rather than simply
desirable from the standpoint of the applicant (CEQ 1981). For alternatives eliminated from
further study, a project's environmental documentation must "briefly discuss the reasons for their
having been eliminated" (CEQ 1981).
2) CWA Section 404(b)(1) Guidelines
CWA Section 404(b)(1) Guidelines state "no discharge of dredged or fill material shall be
permitted if there is a practicable alternative to the proposed discharge which would have less
adverse impact on the aquatic ecosystem, so long as the alternative does not have other
significant adverse environmental consequences" (40 C.F.R. § 230.10a). Practicable means
available and capable of being done after taking into consideration cost, existing technology, and
logistics in light of the overall project purpose.
17

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
The foremost objective of the CWA is to restore and maintain the chemical, biological, and
physical integrity of the nation's waters through the elimination of discharges of pollutants (33
USC § 466 et seq.). Pollutants include dredged and fill materials [40 CFR 230.3(o)], while the
nation's waters, or waters of the U.S., include wetlands [40 CFR 230.3(s) (7)]. The U.S.
Environmental Protection Agency (USEPA) 404(b)(1) Guidelines (40 CFR 230) provide the
criteria that are used in reviewing USACE permit applications, with respect to the authorization of
discharge of dredged or fill material into waters of the U.S., including wetlands. Under the USEPA
Guidelines, the principal screening action to assess the necessity of permitting a discharge of
dredged or fill material into waters of the U.S. is the analysis of practicable alternatives [40 CFR
230.10(a)].
According to 40 CFR Section 230.10(a), a discharge of dredged or fill material will be permitted
by the USACE if no practical alternatives to the proposed discharge will have less adverse impact
on the aquatic ecosystem and there are no other significant adverse environmental
consequences. Under 40 CFR Section 230.10(a)(2), a practicable alternative is an alternative
site that is available and capable of being developed after considering costs, existing technology,
and logistics in light of overall project purposes. The permit applicant is only required to evaluate
alternatives that are considered practicable based on costs, technical factors, or logistical factors
that are capable of achieving the overall purpose of the proposed activity.
According to the Army Corps of Engineers Standard Operating Procedures for the Regulatory
Program (SOP), dated October 15, 1999, the amount of information needed and the level of
scrutiny required by the USEPA 404(b)(1) Guidelines is commensurate with the severity of the
environmental impact and the scope/cost of the project. The SOP provides that the compliance
evaluation procedures under the USEPA 404(b)(1) Guidelines vary to reflect the degree of
potential for adverse impacts on the aquatic ecosystems. The alternatives that were considered
for the proposed actions at the Dan River Steam Station were evaluated pursuant to the SOP.
4.2 STORMWATER DIVERSION PROJECT
The implementation of stormwater diversion will require removal of ash from an existing
dredge basin (located between the current footprints of Ash Fill 1 and Ash Fill 2),
construction of a soil divider berm, and construction of five pipelines. The diversion of
W-*

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
stormwater is a significant element of the overall process to excavate and remove CCR materials
from the Dan River Steam Station. The excavation and removal of CCR materials is, in turn, a
function of the promulgation of CAMA. Therefore, the impetus for the alternatives analysis is
linked to this path.
The alternatives analysis herein comprises the set of three action alternatives for the diversion of
stormwater: the pump -around alternative (400 gallons per minute [gpm]), the high -volumetric flow
rate pump -around alternative (49,000 gpm), and the gravity alternative. These alternatives were
examined with respect to Project practicability limits and the need to avoid and/or minimize
impacts to waters of the U.S. Wetland and stream impacts were calculated using geographic
information system (GIS) applications and overlaying the action alternative footprints onto the
database of surveyed waters of the U.S. boundaries. These surveyed jurisdictional boundaries
were based on the results of the Verification of Jurisdictional Determination conducted by the
USACE Raleigh Regulatory Field Office. The No Build Alternative (No Action Alternative) is also
presented herein. From the examination (comparative analysis) of the set of action alternatives,
the subsequent preferred alternative is advanced for further examination as related to potential
resources impacts.
4.2.1 Pump -around Alternative
Descriptions of the various Project components of the pump -around action alternative (400 gpm)
have been provided in Section 3.1 of the WMP. These Project components, as areas of work,
are shown on Figure 3a. The resources, features and site attributes that occur within the Project
footprint (affected environment), or have the potential to occur in the vicinity of the Dan River
Steam Station, include land use, geology/topography, soils, terrestrial communities, wetlands,
streams, riparian buffers, open waters, floodplains, stormwater, protected species, cultural
resources, environmental justice, noise and air quality. Each resource, feature and attribute for
the pump -around alternative is examined in Sections 5 through 12 of the WMP. Based on this
review, the only resources that would be impacted by the implementation of this action alternative
would be waters of U.S. The impacts to waters of the U.S. for each Project component are
presented below.
19

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Divider Berm
April 28, 2017
Stormwater Diversion Project and Associated Projects
Construction of the divider berm will require removal of vegetation and CCR material within the
divider berm footprint and placement of fill within the existing jurisdictional dredge basin. The
proposed wetland impact is 1.89 acres. This impact value includes the entire dredge basin as
the removal of vegetation and CCR from the entire dredge basin must be completed before the
construction of the divider berm (placement of fill material) can be initiated. No jurisdictional
streams will be impacted as part of divider berm construction.
MAI
The constructed sump portion of the UFA will require excavation of material within the existing,
jurisdictional dredge basin. The proposed wetland impact for this action is included in the dredge
basin impact (1.89 acres) for the divider berm construction. The UFA Project component will also
cause periodic flooding impacts to the stream and wetland complex north of the divider berm.
The overflooding impact to wetlands will be 0.22 acre and the overflooding impact to a perennial
stream will be 393 linear feet.
\N.qA-1
Construction of WSA-1 will require removal of vegetation, CCR removal and regrading to promote
drainage within the existing jurisdictional dredge basin. The proposed wetland impact for this
action is included in the dredge basin impact (1.89 acres) for the divider berm construction. No
jurisdictional streams will be impacted as part of WSA-1 construction.
WSA-2
WSA-2 is an existing feature that periodically inundates a jurisdictional wetland. The wetland
impacts (permanent) associated with WSA-2 have previously been permitted by the USACE
(Action ID SAW -2014-01477), as described in Section 3.1 of the WMP. No additional impacts to
waters of the U.S. will be made as part of the previously permitted WSA-2 construction and the
implementation of the stormwater diversion operations.
20

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
WSA-3
April 28, 2017
Stormwater Diversion Project and Associated Projects
Construction of WSA-3 will periodically inundate a jurisdictional wetland. The proposed wetland
impact (overflooding) is 0.19 acre. No streams will be impacted as part of WSA-3 construction.
Pige Line 1: UFA to SW 010
Construction of Pipe Line 1 will not require any additional stream or wetland impacts.
Pipe Line 2: WSA-1 to Manifold
Construction of Pipe Line 2 will not require any additional stream or wetland impacts.
Pipe Line 3: WSA-2 to WSA-1
Wetland impacts have previously been permitted by the USACE, as described in Section 3.1 of
the WMP. Construction of Pipe Line 3 will not require any additional stream or wetland impacts.
Piae Line 4: WSA-3 to WSA-1
Construction of Pipe Line 4 will not require any additional stream or wetland impacts.
Piae Line 5: SAB to Tank
Construction of Pipe Line 5 will not require any additional stream or wetland impacts.
4.2.2 High -volumetric Flow Rate Pump -around Alternative
The high -volumetric flow rate pump -around alternative is nearly identical to the pump -around
alternative. The principal difference is the rate of water that would be pumped. High-volume
capacity pumps would be used to pump water at a rate of 49,000 gpm under the high -volumetric
flow rate pump -around alternative. The pump -around alternative would pump at a significantly
lower rate of 400 gpm. The overall Project components of the high -volumetric flow rate pump -
21

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
around alternative, as areas of work, are shown on Figure 3b. The resources, features and
attributes of analysis that occur within the Project footprint (affected environment) of the high -
volumetric flow rate pump -around alternative, or have the potential to occur in the vicinity of the
Dan River Steam Station, include the same set of resources, features and site attributes examined
for the pump -around alternative. Based on the review of this information, the only resource
impacted by the implementation of the high -volumetric flow rate pump -around alternative would
be waters of the U.S. The impacts to waters of the U.S. for all but one of the Project components
under the high -volumetric flow rate pump -around alternative would be identical to the impacts for
the same Project components under the pump -around alternative. Under the high -volumetric flow
rate pump -around alternative, no overflooding to the stream and wetland complex north of the
divider berm would occur; i.e., within the the UFA Project component.
The preferred stormwater diversion pumping option is to utilize a 400 gpm pump system. The
preferred pumping option (400 gpm) is less than the peak runoff rate for the 25 -year, 24-hour
storm event (approximately 109 cubic feet per second [cfs] = 49,000 gpm); therefore, the preferred
pumping option would lead to periodic inundation of the stream and wetland complex in the UFA.
Although it is theoretically possible to provide a pump system with a capacity of 49,000 gpm, such
a solution would not be practical because it would require either several industrial -grade pumps
or a large number of traditional pumps. The costs for pump and fuel are estimated to be
approximately $61VI over a four year period. The power supply would come from a diesel
generator which would require fueling, dual containment, and numerous maintenance checks. As
such, power supply would be problematic and the pumping system would be cost -prohibitive to
install and maintain.
With the above considerations, the high -volumetric flow rate pump -around alternative was
dismissed from futher consideration and the focus of the alternatives analysis was centered on
the pump -around alternative and the gravity alternative, as presented in Sections 4.2.1 and 4.2.3,
respectively, herein.
22

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
4.2.3 Gravity Alternative
April 28, 2017
Stormwater Diversion Project and Associated Projects
The majority of the Project components of the pump -around action alternative comprise the
gravity action alternative. The overall Project components of the gravity alternative, as areas of
work, are shown on Figure 4. The resources, features and attributes of analysis that occur within
the Project footprint (affected environment) of the gravity alternative, or have the potential to occur
in the vicinity of the Dan River Steam Station, include the same set of resources, features, and
site attributes examined for the pump -around alternative. Based on the review of this information,
the only resources impacted by the implementation of the gravity alternative would be waters of
U.S. The impacts to waters of the U.S. for each Project component are presented below.
Divider Berm
The construction of the divider berm is an identical component between both action alternatives.
Therefore, the proposed wetland impact (1.89 acres) to the existing jurisdictional dredge basin is
identical between alternatives. This impact value includes the entire dredge basin as the removal
of vegetation and CCR from the entire dredge basin must be completed before the construction
of the divider berm can be initiated. No jurisdictional streams will be impacted as part of divider
berm construction.
UFA
Identical to the pump -around alternative, the constructed sump portion of the UFA will require
excavation of material within the existing jurisdictional dredge basin under the gravity alternative.
The proposed wetland impact for this action is included in the dredge basin impact (1.89 acres)
for the divider berm construction. The gravity alternative will not cause overflooding impacts to
the stream and wetland complex north of the divider berm.
WSA-1
Identical to the pump -around alternative, the construction of WSA-1 will require removal of
vegetation, CCR removal and regrading to promote drainage within the existing jurisdictional
dredge basin under the gravity alternative. The proposed wetland impact for this action is included
23

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
in the dredge basin impact (1.89 acres) for the divider berm construction. No jurisdictional
streams will be impacted as part of WSA-1 construction.
WSA-2
WSA-2 is an existing feature that periodically inundates a jurisdictional wetland. The wetland
impacts associated with WSA-2 have previously been permitted by the USACE, as described in
Section 3.1 of the WMP. No additional impacts to waters of the U.S. will be made as part of the
previously permitted WSA-2 construction and the implementation of the stormwater diversion
operations.
WSA-3
Identical to the pump -around alternative, the construction of WSA-3 will periodically inundate a
jurisdictional wetland under the gravity alternative (0.19 acre of overflooding impact). No streams
will be impacted as part of WSA-3 construction.
Pipe Line 1: UFA to SW 010
Pipe Line 1 is required to convey non -contact water to an NPDES permitted outfall. Under the
gravity alternative, Pipe Line 1 will consist of a gravity pipe system that will convey non -contact
water from the UFA to proposed Stormwater NPDES Outfall SW -010. Outfall SW -010 will be
located along the eastern edge of the property for the gravity alternative. Construction of Pipe
Line 1 will not require any additional stream or wetland impacts.
Pipe Line 2: WSA-1 to Manifold
Construction of Pipe Line 2 will not require any additional stream or wetland impacts.
Pipe Line 3: WSA-2 to WSA-1
Wetland impacts have previously been permitted by the USACE, as described in Section 3.1 of
the WMP. Construction of Pipe Line 3 will not require any additional stream or wetland impacts.
24

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Pipe Line 4: WSA-3 to WSA-1
April 28, 2017
Stormwater Diversion Project and Associated Projects
Construction of Pipe Line 4 will not require any additional stream or wetland impacts.
Pipe Line 5: SAB to Tank
Construction of Pipe Line 5 will not require any additional stream or wetland impacts.
4.2.4 Comparison of Action Alternative Impacts
Table 1 presents the potential impacts by Project component to wetlands, streams, and the
dredge basin under the pump -around alternative (400 gpm), the high -volumetric flow rate pump -
around alternative (49,000 gpm), and the gravity alternative.
Table 1. Proposed impacts to jurisdictional wetlands, streams, and dredge basin for the
Stormwater Diversion Project, Dan River Steam Station, Rockingham County,
North Carolina.
25
Proposed Impacts
Project Component
Action Alternative
Wetlands
Streams
Dredge Basin
(acres)
(linear feet)
(acres)
Pump -around
0.22
393
--
UFA
High -volumetric Flow Rate
Pump -around
Gravity
--
--
--
Pump-around
--
--
1.89
WSA-1
High -volumetric Flow Rate
Pump -around
1.89
Gravity
--
--
1.89
Pump -around
0.11
--
--
WSA-2
Previously Permitted
High -volumetric Flow Rate
Pump -around
0.11
--
--
Gravity
0.11
--
--
25

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
The wetland impacts associated with WSA-2 (0.11 acre) have previously been permitted by the
USACE, as described in Section 3.1 of the WMP. This impact is common to all three action
alternatives. The proposed wetland impact associated with WSA-3 (0.19 acre) would occur under
all action alternatives. The proposed impact to the dredge basin (1.89 acres) associated with
WSA-1 would also occur under all action alternatives. The remaining Project component, the
UFA, is the only component where the wetland and stream impacts are dissimilar. Under the
pump -around alternative (400 gpm), the proposed impacts for the UFA, due to overflooding, would
be 0.22 acre of wetlands and 393 linear feet of stream. No impacts to wetlands or streams would
occur under the high -volumetric flow rate pump -around alternative (49,000 gpm) for the UFA.
Similarly, no impacts to wetlands or streams would occur under the gravity alternative for the UFA.
All impacts to wetlands, streams, and the dredge basin under all three action alternatives would
be permanent. This presumption is based on recent permitting discussions with USACE Raleigh
Regulatory Field Office staff and the understanding of compensatory mitigation requirements
associated with NWP issued by the USACE for other Dan River Steam Station projects in the past
three years.
The Project is vital to comply with state and federal regulations, will facilitate contact and non -
contact water separation, and will improve site safety. The Project will require stream and wetland
impacts by necessity. As described above, the amount of stream and wetland impacts differs
between the pump -around alternative and the gravity alternative. Although the pump -around
alternative will have more stream and wetland impacts, the pump -around alternative is the
preferred approach because:
26
Proposed Impacts
Project Component
Action Alternative
Wetlands
Streams
Dredge Basin
(acres)
(linear feet)
(acres)
Pump -around
0.19
--
--
WSA-3
High -volumetric Flow Rate
Pump-around
0.19
--
--
Gravity
0.19
--
The wetland impacts associated with WSA-2 (0.11 acre) have previously been permitted by the
USACE, as described in Section 3.1 of the WMP. This impact is common to all three action
alternatives. The proposed wetland impact associated with WSA-3 (0.19 acre) would occur under
all action alternatives. The proposed impact to the dredge basin (1.89 acres) associated with
WSA-1 would also occur under all action alternatives. The remaining Project component, the
UFA, is the only component where the wetland and stream impacts are dissimilar. Under the
pump -around alternative (400 gpm), the proposed impacts for the UFA, due to overflooding, would
be 0.22 acre of wetlands and 393 linear feet of stream. No impacts to wetlands or streams would
occur under the high -volumetric flow rate pump -around alternative (49,000 gpm) for the UFA.
Similarly, no impacts to wetlands or streams would occur under the gravity alternative for the UFA.
All impacts to wetlands, streams, and the dredge basin under all three action alternatives would
be permanent. This presumption is based on recent permitting discussions with USACE Raleigh
Regulatory Field Office staff and the understanding of compensatory mitigation requirements
associated with NWP issued by the USACE for other Dan River Steam Station projects in the past
three years.
The Project is vital to comply with state and federal regulations, will facilitate contact and non -
contact water separation, and will improve site safety. The Project will require stream and wetland
impacts by necessity. As described above, the amount of stream and wetland impacts differs
between the pump -around alternative and the gravity alternative. Although the pump -around
alternative will have more stream and wetland impacts, the pump -around alternative is the
preferred approach because:
26

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
1. The gravity pipe option requires routing a pipe below contact water storage area WSA-1.
The NCDEQ has expressed reservations about routing any new pipe beneath a contact
water storage area.
2. The gravity pipe option requires routing a pipe within an existing ash basin which would
pose the following challenges:
a. Pipe routing would be within an existing CCR unit footprint.
b. Preventing damage of the gravity pipe during adjacent CCR removal activities
could be challenging.
c. Pipe construction would remove existing access routes around the dam.
d. Additional controls such as thrust blocks and anti -flotation counter-measures
would be required.
3. The gravity pipe option would require a breach through the regulatory dam embankment.
4. The gravity pipe system has a higher susceptibility to damage due to proximity of future
construction, greater environmental consequences of a failure due to proximity of contact
water sources, and would require more maintenance when compared to the piping for the
pump -around option.
As previously stated earlier in the WMP, the high -volumetric flow rate pump -around alternative
was considered to be highly problematic and was subsequently dismissed during the preliminary
examination of stormwater diversion options. Although it is theoretically possible to provide a
pump system with a capacity of 49,000 gpm, such a solution would not be practical because it
would require either several industrial -grade pumps or a large number of traditional pumps. The
costs for pump and fuel are estimated to be approximately $6M over a four year period. The
power supply would come from a diesel generator which would require fueling, dual containment,
and numerous maintenance checks. Overall, power supply would be problematic and the
pumping system would be cost -prohibitive to install and maintain.
27

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
4.2.5 No Build Alternative
April 28, 2017
Stormwater Diversion Project and Associated Projects
Under the No Build Alternative, implementation of stormwater diversion activities would not occur;
therefore, there would be no impacts to waters of the U.S.
4.2.6 Avoidance and Minimization of Impacts
Appropriate and practicable steps to minimize potential adverse impacts to wetlands, streams,
and ponds were considered through analysis of the development concepts during Project
planning and the examination of the action alternatives. To generate the final preferred
alternative, further design modifications were completed for the Project. The complete avoidance
of waters of the U.S. was not practicable as the excavation and disposal of CCR materials at the
Dan River Steam Station ultimately required under CAMA could not be accomplished without
some impact to such waters. However, the stormwater diversion operations will be conducted in
a manner to reduce the potential for degradation of downstream waters.
Off-site Alternative for Stormwater Diversion
The off-site alternative for stormwater diversion would include the same design components as
the high -volumetric flow rate pump -around alternative (49,000 gpm), but would additionally
require a series of large tanks to temporarily store the excess stormwater until it could be
discharged to the City of Eden. The following discussion provides further details on the off-site
alternative.
Duke Energy has a permit with the City of Eden to discharge 200 gpm of flow to the City for
treatment with the potential to increase to 400 gpm of discharge; therefore, an off-site alternative
was considered to pump stormwater to the City of Eden. The off-site alternative would generally
consist of the 49,000 gpm pump alternative with the ultimate discharge point being the City of
Eden.
Leachate generated at the Dan River Landfill would be conveyed to the City of Eden for treatment;
therefore, the flow capacity available for diverted stormwater would be less than the permitted
capacity. Additionally, the pump system would need to have a capacity of 49,000 gpm to prevent
K:3

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
inundation of the stream and wetland complex in the UFA. The maximum allowable permitted
flow (200 to 400 gpm, less quantity of leachate generated) is less than the peak runoff rate for the
25 -year, 24-hour storm event (approximately 109 cfs = 49,000 gpm); therefore, large on-site
equalization tanks would be required to temporarily store the excess stormwater for eventual
discharge to the city. The off-site alternative would require a series of large equalization tanks in
addition to the pump, power supply and cost considerations discussed in the 49,000 gpm pump
alternative description (i.e., high -volumetric flow rate pump -around alternative). In summary, the
Project constraints are such that there is no viable off-site alternative. It is noted that the
aforementioned large equalization tanks would not be used under the other on-site action
alterntives; i.e., the on-site alternatives would discharge to existing surface drainage features.
Proposed Rip -rap Energy Dissipator
No jurisdictional wetlands or streams will be impacted by the construction of the proposed rip -rap
energy dissipator. The energy dissipator is a design component of the pump -around alterrnative.
The siting of this energy dissipator was completed in a manner to avoid a group of wetlands
(interconnected by a stream feature) occurring within the northern portion of the Dan River Steam
Station. The proposed location of the energy dissipator is shown on Figures 3a and 3b.
�R.C!` Plon
All development projects in North Carolina that disturb an acre or greater of land require an
approved E&SC Plan. E&SC Plans must be produced in accordance with the North Carolina
Erosion and Sediment Control Planning and Design Manual, dated May 2013. This manual
includes best management practices (BMPs) for reducing erosion and sedimentation during
construction. This requires proper site preparation techniques, surface stabilization, runoff control
measures, diffuse flow through the riparian buffer, inlet and outlet protection, and stream
protection. Rockingham County uses this manual when directing developers during new
development or redevelopment that exceeds one acre (PTRC 2012). As Rockingham County is
not NPDES Phase II nor is the watershed in a regulated community, it has no post -construction
soil and erosion or stormwater control obligations. Rockingham County relies upon the NCDEQ
Winston-Salem Regional Office to oversee and enforce their federal soil and erosion control
29

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
requirements for new construction. Stormwater diversion activities of the Project will be
conducted in a manner to minimize the potential for erosion and sedimentation.
Storm Runoff Event
Typical E&SC impoundments are designed for the 10 -year design storm. The proposed divider
berm does not have an emergency spillway; therefore, the engineer considered the 25 -year event
as the appropriate design storm. It should be noted that the water surface elevation of the 25 -
year event was calculated to be at elevation 548.05 feet above mean sea level (amsl). The divider
berm elevation is approximately 554 feet amsl, indicating storage capacity in excess of the 25 -
year event.
4.3 DAN RIVER 134 PROJECT
No alternatives are identified for the DR 134 Project as the stabilization of the eroding streambank
of Stream 3 is the only action that can be accomplished to retard the continued degradation of
the stream. The method of stabilization is also limited; i.e., the use of rip -rap to armor the
streambank is presumed to be the optimal action to assure bank stability over time given materials
and established engineering techniques. Under the No Action Alternative, the proposed action
would not be accomplished and the streambank would continue to erode and the stability of
the bank would continue to decline.
The proposed action will result in an impact of 130 linear feet to Stream 3 from the placement of
rip -rap below the ordinary high water mark (OHWM). Avoidance measures are not appropriate,
as the continued eroding of the streambank cannot be ignored. The proposed stream impact
cannot be minimized as the stabilization of the streambank cannot be assured without the
placement of rip -rap both above and below the OHWM. A portion of the streambank within the
proposed work area is eroding below the OHWM. If this portion of the streambank is not armored
with rip -rap, erosion will continue from this area of the bank (below the OHWM) and overall stream
stabilization will not be possible.
30

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
4.4 DAN RIVER 131 PROJECT
April 28, 2017
Stormwater Diversion Project and Associated Projects
No alternatives are identified for the DR 131 Project as the extension of the culvert pipe
downstream to raise the elevation of the crest of the southern road crossing is the only action
that can be accomplished to provide a more permanent and stable approach for vehicles and
equipment through this crossing. The proposed action is appropriate given materials and
established engineering techniques. Under the No Action Alternative, the proposed action would
not be accomplished and the approach through the road crossing would be impermanent.
Furthermore, the crossing would destabilize over time.
The proposed action will result in an impact of 15 linear feet to Stream 3 from the extension of
the culvert pipe. This impact of 15 linear feet is in addition to the 43 linear feet of impact for
the southern road crossing during the March 2016 culvert installation referenced above
(Action ID SAW -2016-00331). Avoidance and minimization measures are not appropriate, as
the approach through the road crossing cannot be made permanent and the stability of the
crossing canot be assured without extending the pipe and raising the crest of the crossing. A
permanent and stable approach through the road crossing will provide safe access to the
northern shoreline of the Dan River for scarp repair in the vicinity of the barge loadout area.
The southern road crossing, along with the northern crossing, will be maintained indefinitely for
future needs and emergency access to this area of the steam station.
4.5 36 -INCH PIPE CLOSURE PROJECT
No alternatives are identified for the proposed action. The project was previously permitted by
the USACE under NWP 18.
4.6 48 -INCH PIPE CLOSURE PROJECT
No alternatives are identified for the proposed action. The project was previously permitted by
the USACE under NWP 18.
31

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
32

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
5.0 WATERS OF THE U.SJWETLANDS
5.1 STORMWATER DIVERSION PROJECT
The implementation of stormwater diversion will require removal of ash from the existing
dredge basin (located between the current footprints of Ash Fill 1 and Ash Fill 2),
construction of a soil divider berm, and construction of five pipelines. The preferred method
for implementing stormwater diversion will incorporate a pump -around operation (400 gpm).
The components of the pump -around operation described in Section 3.1 of the WMP include
Divider Berm, UFA, WSA-1, WSA-2, WSA-3, and Pipe Lines 1, 2, 3, 4 and 5. Each
component is shown on Figure 3a. The "affected environment" (Project footprint) for the
pump -around operation therefore includes the aforementioned Project components. The
Project will impact jurisdictional wetlands and streams within the affected environment. The
waters of the U.S. within the Dan River Steam Station and the affected environment are discussed
in this report section. In addition, relevant background information is presented and includes the
set of natural resources and physical features that occur within the plant property and the affected
environment. The set of topics includes land use, geology and topography, soils, terrestrial
communities, wetlands, streams, riparian buffers, open waters, floodplains, surface waters, and
groundwater. These topics are discussed below.
5.1.1 Land Use
The Dan River Steam Station is a 620 MW CC power generating facility. The station property
comprises the following features: power generation plant and associated operations buildings,
trailers, sheds, and parking areas; contractor parking area and trailers; utility right-of-ways; paved
and unpaved roadways; PAB and SAB; Ash Fill 1 (proposed northeast landfill area); Ash Fill 2;
materials and equipment yard; maintained areas (grassed or landscaped); natural vegetated
areas, including forested uplands and wetlands; and manmade ponds and stream features. The
Dan River abuts the southern boundary of the station. Woodland abuts the western, northern and
eastern station boundaries. Surrounding land use includes low density residential and golf
course, near the northern and western boundaries. The station is accessed from the north by
South Edgewood Road.
33

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Affected Environment
April 28, 2017
Stormwater Diversion Project and Associated Projects
The Project area primarily encompasses woodland, open areas (maintained or otherwise), three
separate wetland areas, and the dredge basin on the western side of Ash Fill 1 and the eastern
side of Ash Fill 2.
5.1.2 Geology and Topography
The Dan River Steam Station is located in the Piedmont Physiographic Region of North Carolina.
The North Carolina Geological Map of Region G, which includes Guilford, Rockingham, Caswell,
Randolph, Davidson and Alamance Counties, indicates that the Eden area is located between
two of the ten belts of the Piedmont of North Carolina and the Triassic Basin (Carpenter 1982). It
is geologically complex. The belts to either side of the Triassic Basin are the Inner Piedmont to
the west and the Milton Belt to the east. The Inner Piedmont is metamorphosed rocks, primarily
amphibole, which dates from the Cambrian period/late Proterozoic Era, and several forms of
schist, which date from the same period. The Milton Belt is metavolcanic rock, felsic and intrusive
rocks from the Cambrian period/late Proterozoic Era, 680 to 710 million years before present.
Some granitic rocks from the Silurian period (429 million years before present) are also found
locally (Carpenter 1982).
The Triassic Basin, dating from 290 to 200 million years before present, runs through the middle
of the Eden area (Sherwood 1998). According to the Rockingham County Soil Survey, the
topography of the Triassic Basin is 50 to 300 feet lower than the surrounding topography of earlier
age (NRCS 1992). The Triassic Basin is predominated by sandstones, conglomerates and
unmetamorphosed shale. Streams of Triassic age carried silt, sand and gravel to an environment
much like the Holocene East African rift valley (Sherwood 1998). The Cow Branch, Stoneville
and Pine Hall Formations are the primary formations (PTRC 2012). They are locally in fault
contact with the metamorphic rocks and are truncated by the Dan River fault along the northwest
side of the Basin. The wide stream channels are found within the Basin (PTRPO 2012).
34

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Affected Environment
April 28, 2017
Stormwater Diversion Project and Associated Projects
The Dan River Steam Station lies between 490 and 630 feet above mean sea level. The Project
will have no effect on the local geologic features of the Dan River Steam Station and will not alter
the topography as no contours shall be redesigned, with the exception of the proposed divider
berm and the dredge basin. As part of the pump -around operations, a compacted soil or soil/rock
fill divider berm will be constructed along the northern edge of the dredge area between Ash Fills
1 and 2. The dredge area will be regraded during final ash removal to promote drainage to a new
drop inlet. These alterations to site topography are not presumed to be significant as the area of
affect encompasses previously disturbed topography (PTRC and NCCWMTF 2012).
5.1.3 Soils
Figure 5 depicts the soil types (map units) occurring within the Dan River Steam Station. The soil
types are also presented in Table 2 below. Among the 11 soil types that occur within the steam
station property, only one is listed as a hydric map unit; i.e., Dan River loam, 0 to 2 percent slopes,
frequently flooded (DaA). This hydric map unit occurs at the southwest corner of the station and
along the southern/southeastern boundary abutting the Dan River.
Table 2. Soil types occurring within the Dan River Steam Station, Rockingham County,
North Carolina.
Soil Type
Map Unit Symbol
Hydric / Non -hydric
Ayersville gravelly loam, 4 to 15 percent slopes
AyC
Non -hydric
Ayersville gravelly loam, 15 to 45 percent slopes
AyF
Non -hydric
Clover sandy loam, 2 to 8 percent slopes
CmB
Non -hydric
Clover sandy loam, 8 to 15 percent slopes
CmD
Non -hydric
Dan River loam, 0 to 2 percent slopes, frequently flooded
DaA
Hydric
Pinkston fine sandy loam, 15 to 45 percent slopes
PnF
Non -hydric
35

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
Stoneville loam, 2 to 8 percent slopes
SvB
Non -hydric
Stoneville loam, 8 to 15 percent slopes
SvD
Non -hydric
Stoneville -Urban land complex, 2 to 10 percent slopes
SWC
Non -hydric
Udorthents, loamy
Ud
Non -hydric
Water
W
Non -hydric
Affected Environment
No hydric soils (hydric map units) occur within the Project area; i.e., the wetland/stream/pond
complex located along the western edge of Ash Fill 1, the dredge basin, and Wetlands A and H.
Figure 6 shows the jurisdictional wetland areas and stream features on the Dan River Steam
Station. Wetlands B, C, D, E, F, G and J occur within the Udorthents, loamy (Ud) map unit.
Wetland B also occurs within the Clover sandy loam, 2 to 8 percent slopes (CmB) map unit.
Wetlands A and H are underlain by the Clover sandy loam, 8 to 15 percent slopes (CmD) map
unit. The majority of the dredge basin is also underlain by the CmD map unit.
5.1.4 Terrestrial Communities
The dominant terrestrial communities on the Dan River Steam Station comprise pine forest,
upland hardwood forest, and mixed pine -hardwood upland forest. Shrub and brushland and open,
maintained (grassed) areas also occur on the property. These latter areas encompass
disturbed/altered land within the station property which may have been forested in the past.
Information on the terrestrial communities and species composition within the Project area is
discussed below.
36

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Affected Environment
April 28, 2017
Stormwater Diversion Project and Associated Projects
The terrestrial communities that surround the aforementioned wetland/stream/pond complex
(western edge of Ash Fill 1) include pine forest, upland hardwood forest and mixed pine -hardwood
upland forest. The pine forest community occurs to the north and west of the complex. This
community is dominated by Virginia pine (Pinus virginiana) in the canopy and shrub strata. The
groundstory is very sparse with scattered grasses, vines and forbs. The upland hardwood forest
community abuts the streams and wetlands of the complex. The canopy stratum includes white
oak (Quercus alba), northern red oak (Quercus rubra), American elm (Ulmus americana),
sweetgum (Liquidambar styraciflua), red maple (Acer rubrum var. rubrum), mockernut hickory
(Carya alba), and black cherry (Prunus serotina). The shrub stratum consists of American holly
(Ilex opaca), saplings of the aforementioned hardwood species, and scattered occurrences of
Chinese privet (Ligustrum sinense), an invasive, noxious shrub species. The groundstory
vegetation includes panic grasses (Panicum spp.), Japanese honeysuckle (Lonicera japonica),
blackberry (Rubus spp.), common greenbrier (Smilax rotundifolia), wild onion (Allium canadense),
and eastern red cedar seedlings (Juniperus virginiana var. virginiana). Climbing vine species
primarily include muscadine (Vitis rotundifolia var. rotundifolia). The mixed pine -hardwood upland
forest community is interspersed between the pine forest and upland hardwood forest areas and
comprises plant species common to both communities. The canopy stratum contains a mixture
of Virginia pine and hardwood trees. Finally, the central portion of the complex encompasses an
electrical power transmission line (corridor). This periodically maintained corridor is vegetated
with a mixture of grasses, forbs, vines, shrubs and tree seedlings. Silverberry (Elaeagnus
umbellate), an invasive, noxious shrub species, is fairly common.
Maintained (mowed) land abuts the majority of the dredge basin. The vegetation includes grasses
and scattered forbs. A mixed pine -hardwood upland forest abuts the northern end of the dredge
basin. A portion of this forested community upslope of the northeast corner of the basin has been
recently timbered. The terrestrial communities in the vicinity of Wetland A primarily include a
stand of Virginia pine on the west side of the wetland. A small fringe of hardwood trees abuts the
wetland: red maple, American elm, and yellow poplar (Liriodendron tulipifera). Maintained
(mowed) land occurs to the northwest and northeast of the wetland. Wetland A occurs on the
west side of the rail line at the ash loadout area. The northern half of Wetland H is bordered by
37

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
maintained land while the southern half of this wetland is bordered by mixed pine -hardwood
upland forest. Wetland H occurs on the west side of the rail line.
The wetland community descriptions and information on species composition for the waters of
the U.S. within the Project area are discussed in Section 5.1.5 below. Botanical taxonomic
nomenclature is in accordance with Weakley (Weakley 2015).
5.1.5 Wetlands
Waters of the U.S., including ponds, streams and wetlands, are defined by 33 CFR Part 328.3 et
al. and are protected by Section 404 and other applicable sections of the CWA (33 USC 1344).
Impacts to regulated resources under Section 404 of the CWA are administered and enforced by
the USACE Wilmington District.
In January and April 2015, Amec Foster Wheeler performed an on-site evaluation for the presence
of potentially jurisdictional surface waters on the Dan River Steam Station. Potentially
jurisdictional wetland areas were delineated (flagged) using the Routine On -Site Determination
Method as defined in the USACE Wetland Delineation Manual' and the Eastern Mountains and
Piedmont regional supplementz. This technique uses a multi -parameter approach which requires
positive evidence of three criteria: hydrophytic vegetation, hydric soils and wetland hydrology.
Areas exhibiting wetland characteristics within the station boundary were considered potentially
jurisdictional waters. The landward limits of wetlands were subsequently marked in the field with
Environmental Laboratory. 1987. "Corps of Engineers Wetlands Delineation Manual," Technical
Report Y-87-1. U.S. Army Engineer Waterways Experiment Station. Vicksburg, MS.
'- Environmental Laboratory. 2012. "Regional Supplement to the Corps of Engineers Wetland
Delineation Manual: Eastern Mountains and Piedmont Region (Version 2.0)," Technical Report
ERDC/EL TR -12-9. U.S. Army Engineer Waterways Experiment Station. Vicksburg, MS.
38

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
labeled survey tape tied to vegetation or stakes
a Global Positioning System device.
April 28, 2017
Stormwater Diversion Project and Associated Projects
The location of each flag point was acquired by
As part of the jurisdictional waters evaluation, Amec Foster Wheeler performed an in-house
review of the U.S. Department of Agriculture's Natural Resources Conservation Service (NRCS)
Rockingham County Soil Survey GIS data (Figure 5) (NRCS 2017), the U.S. Geological Survey
(USGS) digital 7.5' topography (Figure 7; Southeast Eden, North Carolina Quadrangle) (USGS
2017), and the U.S. Fish and Wildlife Service (USFWS) National Wetlands Inventory (NWI)
geographic information system GIS data (Figure 8) (USFWS 2016). These maps were used to
direct the on-site investigation and highlight areas having listed hydric soils or topographic
configurations suggesting the presence of wetlands or streams.
Amec Foster Wheeler, on behalf of Duke Energy, submitted a request for Verification of
Jurisdictional Determination (JD) to the USACE Raleigh Regulatory Field Office for the delineated
wetland areas within the Dan River Steam Station. This request for Verification of JD included
the work areas within the Project area. Mr. David Bailey of the USACE conducted the site
inspection of the Dan River Steam Station on November 13, 2015. The USACE has not issued
an Approved JD at this time. The landward limits of the jurisdictional wetlands (flag points) within
the property were surveyed by LDSI, Inc., a registered Professional Land Surveyor.
Based on the field approved jurisdictional feature delineation, 17 jurisdictional wetland areas
occurred within the Dan River Steam Station (Wetlands A through Q) (Figure 6). These 17
wetlands were classified as headwater forest, with the exception of Wetland L which was
classified as bottomland hardwood forest, and Wetland A, hardwood flat (Schafale and Weakley
1990). The classifications of these wetlands were based on the North Carolina Wetland
Assessment Method (NC WAM) per the methodology outlined in the NC WAM User Manua(
(Version 4.1), effective October, 2010. Many of these wetlands comprised
3 N.C. Wetland Functional Assessment Team. 2010. "N.C. Wetland Assessment Method (NC WAM) User
Manual, Version 4.1". North Carolina Wetland Functional Assessment Team. Raleigh, NC.
39

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
herbaceous/shrub/scrub areas within maintained electrical power transmission line corridors or
facility open areas. Information on the size, corresponding NC WAM classification, and general
location within the station property for the 17 jurisdictional wetlands is presented in Table 3.
Table 3. Wetlands within the Dan River Steam Station, Rockingham County, North
Carolina.
Wetland ID
NC WAM Classification
Size
(acres)
General Site Location
within Steam Station
Property
Wetland A
Hardwood Flat
0.19
East central
Wetland B
Headwater Forest
0.40
Northeast quadrant
Wetland C
Headwater Forest
0.06
Northeast quadrant
Wetland D
Headwater Forest
0.16
Northeast quadrant
Wetland E
Headwater Forest
0.01
Northeast quadrant
Wetland F
Headwater Forest
0.16
Northeast quadrant
Wetland G
Headwater Forest
0.07
Northeast quadrant
Wetland H
Headwater Forest
0.11
East central
Wetland I
Headwater Forest
0.29
South central
Wetland J
Headwater Forest
0.10
Northeast quadrant
Wetland K
Headwater Forest
0.19
Northern edge
Wetland L
Bottomland Hardwood Forest
0.94
Western edge
Wetland M
Headwater Forest
0.04
Northern edge
Wetland N
Headwater Forest
0.10
Northern edge
Wetland O
Headwater Forest
0.07
West central
40

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
Affected Environment
The Project area vicinity encompasses nine jurisdictional wetland areas (Figure 6a). Seven of
the wetlands, Wetlands B, C, D, E, F, G and J, occur along the western edge of Fill Area 1 and
comprise what has been described herein as the northern wetland/stream/pond complex. This
complex occurs immediately north of the proposed divider berm. Wetlands A occurs on the west
side of the rail line at the ash loadout area. Wetland H also occurs on the west side of the rail
line. The level of function of each wetland (relative to reference condition) was assessed using
NC WAM on November 2, 2016. Information on the size, NC WAM classification, NC WAM overall
wetland rating, and riparian nature of these nine wetlands is presented in Table 4. The USACE
Eastern Mountain and Piedmont Wetland Determination Data Forms for these wetland areas were
included in the Verification of JD request package previously submitted to the USACE. The NC
WAM Wetland Assessment Forms for the wetland areas are located in Appendix B. Ground level
photography of current site conditions for the wetlands is provided in Appendix C.
Table 4. Wetlands within the Stormwater Diversion Project area vicinity, Dan River
Steam Station, Rockingham Countv, North Carolina.
Wetland ID
NC WAM
Classification
NC WAM Overall
Wetland Rating
General Site Location
Riparian / Non -riparian
Wetland A
Size
Medium
Wetland ID
NC WAM Classification
Wetland B
within Steam Station
Low
0.40
(acres)
Wetland C
Headwater Forest
Low
0.06
Property
Wetland P
Headwater Forest
0.05
West central
Wetland Q
Headwater Forest
0.02
Eastern edge
Affected Environment
The Project area vicinity encompasses nine jurisdictional wetland areas (Figure 6a). Seven of
the wetlands, Wetlands B, C, D, E, F, G and J, occur along the western edge of Fill Area 1 and
comprise what has been described herein as the northern wetland/stream/pond complex. This
complex occurs immediately north of the proposed divider berm. Wetlands A occurs on the west
side of the rail line at the ash loadout area. Wetland H also occurs on the west side of the rail
line. The level of function of each wetland (relative to reference condition) was assessed using
NC WAM on November 2, 2016. Information on the size, NC WAM classification, NC WAM overall
wetland rating, and riparian nature of these nine wetlands is presented in Table 4. The USACE
Eastern Mountain and Piedmont Wetland Determination Data Forms for these wetland areas were
included in the Verification of JD request package previously submitted to the USACE. The NC
WAM Wetland Assessment Forms for the wetland areas are located in Appendix B. Ground level
photography of current site conditions for the wetlands is provided in Appendix C.
Table 4. Wetlands within the Stormwater Diversion Project area vicinity, Dan River
Steam Station, Rockingham Countv, North Carolina.
Wetland ID
NC WAM
Classification
NC WAM Overall
Wetland Rating
Size
(acres)
Riparian / Non -riparian
Wetland A
Hardwood Flat
Medium
0.19
Non -riparian
Wetland B
Headwater Forest
Low
0.40
Riparian
Wetland C
Headwater Forest
Low
0.06
Riparian
Wetland D
Headwater Forest
Medium
0.16
Riparian
41

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
Wetland ID
NC WAM
Classification
NC WAM Overall
Wetland Rating
Size
(acres)
Riparian / Non -riparian
Wetland E
Headwater Forest
Low
0.01
Riparian
Wetland F
Headwater Forest
Low
0.16
Riparian
Wetland G
Headwater Forest
Medium
0.07
Riparian
Wetland H
Headwater Forest
Medium
0.11
Riparian
Wetland J
Headwater Forest
Medium
0.10
Riparian
Total Acreage
1.26
Wetlands C, D and G are dominated by an overstory of sweetgum, red maple and sycamore
(Platanus occidentalis). Virginia pine is also present but typically uncommon. The midstory
consists of small trees or saplings of the aforementioned hardwoods. The understory vegetation
includes greenbrier, Japanese honeysuckle and sedges (Carex spp.). Wetlands B, E and J are
predominantly herbaceous areas which occur within an electrical powerline corridor and/or facility
open area. Wetland F comprises forested and herbaceous areas. The vegetation in the non -
forested areas is primarily herbaceous due to the nature of the disturbance activities within the
maintained areas which prevents development of the canopy and shrub strata. The vegetation
includes soft rush (Juncus effusus), panicgrass, sawtooth blackberry (Rubus argutus),
broomsedge (Andropogon virginicus), and bladder sedge (Carex intumescens). Scattered
occurrences of sweetgum saplings and silverling are present within the electrical powerline
corridor where it intersects the wetlands. The vegetation within Wetland A includes soft rush,
panicgrass, sedges, and scattered saplings of black willow (Salix nigra), sweetgum and red
maple. Wetland H is similar in vegetative composition to Wetland A. Wetlands A, D, G, H and J
have a NC WAM overall rating of medium, while Wetlands B, C, E and F have a NC WAM overall
rating of low.
42

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
The NRCS Soil Survey (Figure 5) indicated the presence of no hydric soils (hydric map units)
within the Project area. Wetlands B, C, D, E, F, G and J occur within the Udorthents, loamy (Ud)
map unit. Wetland B also occurs within the Clover sandy loam, 2 to 8 percent slopes (CmB) map
unit. Wetlands A and H are underlain by the Clover sandy loam, 8 to 15 percent slopes (CmD)
map unit. None of the aforementioned wetland areas appear on the USGS topographic map
(Figure 7) or the USFWS NWI map (Figure 8).
Wetlands A, D, F and H occur within the Project area (inclusive of various Project components)
and will be affected by the implementation of the pump -around stormwater diversion operations.
Wetlands B, C, E, G and J occur in the general vicinity of the Project components but will not be
affected by the stormwater diversion operations.
The Project area also encompasses a dredge basin which occurs between Ash Fills 1 and 2
(Figure 6a). Regulatory jurisdiction was exerted by the USACE over the basin in late 2016. The
basin contains CCR material throughout its entire area. Non-native phragmites (Phragmites
australis), an aggressive perennial wetland grass, has become established and is the dominant
plant species in the basin. Wetland D is hydrologically and vegetatively connected to the dredge
basin. The basin was not depicted on the NRCS Rockingham County Soil Survey (hardcopy
version) (NRCS 1992) and the USGS topographic map (Figure 7); however, a freshwater pond
feature was depicted at the southern end of the basin on the USFWS NWI Map (Figure 8). The
majority of the basin is underlain by Clover sandy loam, 8 to 15 percent slopes (CmD), a non -
hydric map unit. A NC WAM overall rating of low was recorded for the dredge basin. The NC
WAM Wetland Assessment Form and the USACE Eastern Mountain and Piedmont Wetland
Determination Data Form are located in Appendix B. Ground level photography of current site
conditions is provided in Appendix C. The boundary of the dredge basin was delineated by Amec
Foster Wheeler on December 20, 2016. The size of the basin is 1.89 acres based on the survey
of the delineated boundary in January 2016 by Fleming Engineering, Inc. The Wetland
Delineation Survey Plat of the jurisdictional dredge basin is provided in Appendix D.
The dredge basin occurs within the Project area and will be affected by the implementation of the
pump -around stormwater diversion operations.
43

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
5.1.6 Streams
April 28, 2017
Stormwater Diversion Project and Associated Projects
Potential jurisdictional streams on the Dan River Steam Station were evaluated in January and
April, 2015, by Amec Foster Wheeler personnel using the NCDEQ Division of Water Resources
(NCDWR) Methodology for Identification of Intermittent and Perennial Streams and Their Origins4
(Version 4.11), effective September 1, 2010. USACE Stream Quality Assessment Worksheets
were also completed for each stream. The extents of these streams were delineated and included
in the request for Verification of JD to the USACE Raleigh Regulatory Field Office. The landward
limits of the jurisdictional streams (flag points) within the steam station property were surveyed by
LDSI, Inc.
Based on the field approved jurisdictional feature delineation, 12 jurisdictional streams occurred
within the Dan River Steam Station (Streams 1 through 16) (Figure 6). The NCDWR Stream
Identification scores and classifications and the USACE Stream Quality Assessment Worksheet
scores are presented in Table 5 for these 12 streams.
Table 5. Streams within the Dan River Steam Station, Rockingham County, North
Carolina.
4 North Carolina Division of Water Quality. 2010. "Methodology for Identification of Intermittent and
Perennial Streams and their Origins, Version 4.11". North Carolina Department of Environment
and Natural Resources, Division of Water Quality. Raleigh, NC.
44
NCDWR
NCDWR
USACE
Length
General Site Location
Stream ID
Stream
Stream
Stream Score
(linear feet)
Within Steam Station
Score'
Classification
Property
Stream 1
33.5
Perennial
51
758
Northeast quadrant
Stream 2
32.5
Perennial
37
128
Northeast quadrant
Stream 3
34
Perennial
46
700
Eastern edge
4 North Carolina Division of Water Quality. 2010. "Methodology for Identification of Intermittent and
Perennial Streams and their Origins, Version 4.11". North Carolina Department of Environment
and Natural Resources, Division of Water Quality. Raleigh, NC.
44

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
Stream ID
NCDWR
Stream
Score'
NCDWR
Stream
Classification
USACE
Stream Score
Length
(linear feet)
General Site Location
Within Steam Station
property
Stream 4
30
Perennial
56
73
East central
Stream 5
31
Perennial
57
217
South central
Stream 6
32.5
Perennial
37
134
Northeast quadrant
Stream 7
26.5
Intermittent
45
305
Northern edge
Stream 8
39
Perennial
54
2,787
Western edge
Stream 10
22
Intermittent
42
599
Northwest quadrant
Stream 12
22
Intermittent
37
224
West central
Stream 13
30
Perennial
42
1,057
West central
Stream 14
22
Intermittent
41
261
Southwest quadrant
Stream 15
26.5
Intermittent
45
40
Northern edge
Stream 16
26.5
Intermittent
45
53
Eastern edge
NCDWR scoring: <19= ephemeral; 19 to <30 = intermittent; >_30 = perennial
Affected Environment
The Project area vicinity encompasses three jurisdictional streams, Streams 1, 2 and 6 (Figure
6a). These streams occur along the western edge of Ash Fill 1 and are imbedded within the
complex of wetlands comprising Wetlands B, C, D, E, F, G and J. The level of function of each
stream (relative to reference condition) was assessed on November 2, 2016, by Amec Foster
Wheeler using the North Carolina Stream Assessment Method (NC SAM) per the methodology
45

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
outlined in the NC SAM Draft User Manual 5, effective March, 2013. Information on the reach
length, NCDWR Stream Identification score and classification, NC SAM overall stream rating, and
USACE Stream Quality Assessment Worksheet score of these three streams is presented in
Table 6. The NCDWR Stream Identification Forms and the USACE Stream Quality Assessment
Worksheets for these streams were included in the Verification of JD request package previously
submitted to the USACE. The NC SAM Stream Assessment Forms for the streams are located
in Appendix B. Ground level photography of current site conditions for the streams is provided in
Appendix C.
Table 6. Streams within the Stormwater Diversion Project area vicinity, Dan
River Steam Station. Rockinaham Countv. North Carolina.
NCDWR scoring: <19= ephemeral; 19 to <30 = intermittent; >_30 = perennial
5 N.C. Stream Functional Assessment Team. 2013. "N.C. Stream Assessment Method (NC SAM) Draft User
Manual". North Carolina Stream Functional Assessment Team. Raleigh, NC.
46
NCDWR
NCDWR
NC SAM
USACE
Entire Reach
Stream ID
Stream
Stream
Overall
Stream
Length (linear
Score'
Classification'
Rating
Score
feet)
Stream 1
(upstream/northern
33.5
Perennial
High
51
758
portion of reach)
Stream 1
(downstream/southern
33.5
Perennial
High
51
758
portion of reach)
Stream 1
(within powerline
33.5
Perennial
Low
51
758
corridor)
Stream 2
32.5
Perennial
High
37
128
Stream 6
32.5
Perennial
Medium
37
134
Total Linear Feet
1,020
NCDWR scoring: <19= ephemeral; 19 to <30 = intermittent; >_30 = perennial
5 N.C. Stream Functional Assessment Team. 2013. "N.C. Stream Assessment Method (NC SAM) Draft User
Manual". North Carolina Stream Functional Assessment Team. Raleigh, NC.
46

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
Stream 1 is the longest feature (758 feet). Portions of this reach occur within Wetlands C, D, E,
and F. The northern and southern portions of Stream 1 occur within a hardwood forest and have
NC SAM overall ratings of high. The central portion of Stream 1 occurs within a powerline corridor
and has a NC SAM overall rating of low. Stream 2 (128 feet) drains into Stream 1. Stream 2
occurs within Wetland F and upland hardwood forest and has a NC SAM overall rating of high.
Stream 6 (134 feet) occurs within a powerline corridor and a forested upland. The western end
of the reach abuts Wetland J. Stream 6 has a NC SAM overall rating of medium.
No stream features were depicted within the Project area on the NRCS Rockingham County Soil
Survey (hardcopy version), USGS topographic map (Figure 7), or USFWS NWI Map (Figure 8).
The Dan River Steam Station is located within the Roanoke River Basin (Hydrologic Unit Code
[HUC] 03010103).
Stream 1 occurs within the Project area and will be affected by the implementation of the pump -
around stormwater diversion operations. Although Streams 2 and 6 occur in the general vicinity
of the Project components, these surface waters will not be affected by the stormwater diversion
operations.
5.1.7 Riparian Buffers
The Dan River Steam Station is not located within a river basin which has delegated NCDEQ
Riparian Buffer Rules. Therefore, State of North Carolina stream buffers will not apply to the
Project. The Dan River Steam Station is located in the Roanoke River Basin.
The Rockingham County Watershed Protection Ordinance requires a minimum 100 -foot
buffer be established around perennial and intermittent stream features which are shown
on the most recent version of the USGS 7.5 -minute topographic quadrangle. Stream 3,
which occurs along the eastern boundary of the Dan River Steam Station, would be
subject to a 100 -foot vegetative buffer, as the stream was shown as a dashed blue -line
feature on the USGS topographic map (Figure 7). Stream 3 is not part of the Project
area.
47

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
Affected Environment
April 28, 2017
Stormwater Diversion Project and Associated Projects
No stream features (i.e., mapped blue -line features) were depicted within the Project area on the
USGS topographic map (Figure 7). Therefore, Rockingham County Watershed Protection
Ordinance buffers would not be required around Streams 1, 2 and 6 which occur within the Project
area.
5.1.8 Open Waters
One jurisdictional pond, Pond AA (0.04 acre), was delineated within the northeast portion of the
Dan River Steam Station (Figure 6a). The pond was a former sediment basin, but has since been
abandoned.
Affected Environment
Pond AA occurs at the northern end of the wetland/stream/pond complex (western edge of Ash
Fill 1) and abuts Wetland B. The pond was not depicted on the NRCS Rockingham County Soil
Survey (hardcopy version), USGS topographic map (Figure 7), or USFWS NWI Map (Figure 8).
Although Pond AA occurs in the general vicinity of the Project components, this open water area
will not be affected by the implementation of the pump -around stormwater diversion operations.
5.1.9 Floodplains
Floodplain Management is conducted in compliance with Executive Order (EO) 11988. The
National Flood Insurance Program (NFIP) was created in 1968 to protect lives and property and
to reduce the financial burden of providing disaster assistance. The NFIP is administered by the
Federal Emergency Management Agency (FEMA). The NFIP is based on a mutual agreement
between the federal government and communities. In partnership with FEMA, the State of North
Carolina has produced flood maps in accordance with FEMA standards. Communities must adopt
and enforce minimum floodplain management regulations so that development is undertaken in
ways that reduce exposure to flooding. Amec Foster Wheeler reviewed Digital Flood Insurance
Rate Maps (DFIRM) to determine whether any portion of the Dan River Steam Station lies within
the regulatory 100 -year floodplain (FIRM Panels 7989 and 7999, effective date July 3, 2007)

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
(FEMA 2014). The review of the FEMA DFIRM delineated flood boundaries, specifically the
regulated 100 -year flood boundary, identified the area next to the Dan River and the area
encompassing Streams 3 and 16 and Wetland Q (eastern boundary of steam station) as occurring
within the 100 -year flood zone (Figure 9). The western edge of the steam station, as including
Streams 8 and 14, the western end of Stream 13, and Wetland L, also occurs within the 100 -year
flood zone.
Amec Foster Wheeler also reviewed the Rockingham County Flood Damage Prevention
Ordinance (Rockingham County 2007) to determine the extent of local government requirements
for work in floodplains at the Dan River Steam Station. According to the Flood Damage
Prevention Ordinance, work conducted within flood -prone areas would require a Floodplain
Development Permit, specifically, Section B - Floodplain Development Application, Permit and
Certification Requirements. The application for the Floodplain Development Permit must be
submitted for review by the county before any development activity begins. Work conducted
within the 100 -year floodplain would require review/consultation with the Rockingham County
Water Resources Department and/or Floodplain Administrator.
Affected Environment
The review of the FEMA DFIRM delineated flood boundaries for the Dan River Steam Station
identified that no jurisdictional surface waters within the Project area lie within the 100 -year flood
zone (Figure 9). For this evaluation, the Project area encompasses the work to be conducted
within the wetland/stream/pond complex (western side of Ash Fill 1), the dredge basin, Wetland
A, and Wetland H. Any other work areas associated with the Project that lie within the 100 -year
flood zone, but not within the aforementioned jurisdictional surface waters, will be addressed
separately by the stormwater engineer for the project.
5.1.10 Surface Waters
Surface waters include streams, rivers, lakes, and reservoirs. The Dan River Steam Station basin
is located entirely within the Upper Dan sub -basin which is contained within the Roanoke River
basin, part of the Piedmont Physiographic Region. No major, natural water bodies occur within
the steam station. The Dan River abuts the southern boundary of the station. The Dan River
49

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
rises on the eastern slope of the Blue Ridge Mountains in Patrick County, Virginia. From its origin,
it travels 200 miles passing through Stokes, Rockingham, Caswell and Pittsylvania Counties
before reaching Halifax County, Virginia, where it enters the Kerr Reservoir. The Dan River
Watershed forms part of the headwaters of the Roanoke River, a major source of the Albemarle
Sound in coastal North Carolina. The surface water classification listed for the Dan River, as
based on the most recent NCDEQ surface water data (NCDEQ 2017a), is "C". This classification
includes waters protected for uses such as secondary recreation, fishing, wildlife, fish
consumption, aquatic life including propagation, survival and maintenance of biological integrity,
and agriculture. Secondary recreation includes wading, boating, and other uses involving human
body contact with water where such activities take place in an infrequent, unorganized or
incidental manner. The Dan River is not listed as impaired in the vicinity of the Dan River Steam
Station; i.e., it is not included on the "Draft 2016 303(d) List" of impaired waters (NCDEQ 2017a).
Stream 3, which is located in the southeast corner of the steam station property, drains directly
into the Dan River.
Affected Environment
Stream 1 occurs within the Project area and will be affected by the implementation of the pump -
around stormwater diversion operations. Although Streams 2 and 6 and pond AA occur in the
general vicinity of the Project components, these surface waters will not be affected by the
stormwater diversion operations. Discussions of these three streams and Pond AA are presented
in Sections 5.1.6 and 5.1.8, respectively.
5.1.11 Groundwater
Groundwater refers to subsurface hydrologic resources that are used for domestic, agricultural,
and industrial purposes. Groundwater is stored in natural geologic formations called aquifers. In
the Piedmont Physiographic Region of North Carolina, two major aquifer systems exist and
usually interact with one another (NCDEQ 2017b). The surficial materials or regolith of these
provinces form the unconfined aquifer. The fractured rock beneath is the unconfined, to semi -
confined, bedrock aquifer. The surficial aquifer typically feeds the fractures in the bedrock aquifer.
These two aquifers are further described below (NCDEQ 2017b).
50

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
Surficial aquifer: This aquifer is widely used throughout the state for individual home wells. The
surficial aquifer is the shallowest and most susceptible to contamination from septic tank
systems and other pollution sources. Commonly, large diameter wells (up to 3 feet in diameter)
are drilled up to 60 feet deep to store large quantities of water in the well casing. The surficial
aquifer is also very sensitive to variations in rainfall amounts; i.e., they are the first to dry -up in
a drought.
Fractured bedrock aquifer: This aquifer is widely used for home water supply. Usually six-inch
wells are drilled to intercept water bearing fractures which are more common in valleys or draws.
Thick sequences of regolith (surficial aquifer) above fractured bedrock can improve well yields.
Industries and county or municipal well fields look for these higher yielding bedrock wells.
Affected Environment
The diversion of stormwater will not draw water from subsurface/groundwater sources. Therefore,
the implementation of stormwater diversion operations should have no pronounced effect on the
surficial aquifer or the fractured bedrock aquifer.
5.2 DAN RIVER 134 PROJECT
The DR 134 Project will entail streambank stabilization for Stream 3, a perennial stream
located along the eastern boundary of the Dan River Steam Station near its confluence with
the Dan River. Rip -rap (armoring) will be placed along the western streambank of Stream 3 to
prevent further erosion and increase the stablity of the streambank. The area of streambank
instability occurs between two culverted road crossings and focuses on the west bank area.
Therefore, the "affected environment" (project footprint) for the stream stabilization effort
essentially encompasses the portion of the stream reach that occurs between the
aforementioned two road crossings. Relevant background information was presented in
Sections 5. 1.1 through 5. 1.11 of the WMP for the proposed stormwater diversion operations,
the plant property and the affected environment. The set of topics included: land use, geology
and topography, soils, terrestrial communities, wetlands, streams, riparian buffers, open waters,
floodplains, surface waters, and groundwater. These topics are discussed below for the DR 134
Project and its affected environment.
51

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
5.2.1 Land Use
April 28, 2017
Stormwater Diversion Project and Associated Projects
Section 5.1.1 of the WMP included topical information on land use for the Dan River Steam
Station. The land use abutting the affected environment of the DR 134 Project singularly includes
woodland. Land use in the vicinity of the project includes an unpaved roadway, maintained
grassed areas, and the SAB to the west. The Dan River occurs to the south (abuts the southern
boundary of the station).
5.2.2 Geology and Topography
Section 5.1.2 of the WMP included topical information on geology and topography for the Dan
River Steam Station. The DR 134 Project will have no effect on the local geologic features of the
steam station and will not alter the surrounding topography as no contours shall be redesigned.
The placement of rip -rap along the western streambank of Stream 3 will not alter the pattern (i.e.,
sinuosity) or profile (i.e., mean water surface slope) of the affected portion of the stream reach.
Stream dimension, as including a stream's width, mean depth, width/depth ratio, maximum depth,
floodprone area width, and entrenchment ratio, will not be adversely affected by the addition of
rip -rap along the western streambank.
5.2.3 Soils
Section 5.1.3 of the WMP included topical information on soils within the Dan River Steam Station.
The DR 134 Project occurs within the Dan River loam, 0 to 2 percent slopes, frequently flooded
(DaA) map unit, which is a hydric soil (Figure 5). The placement of rip -rap along the western
streambank of Stream 3 (affected environment) will not entail the excavation of soil.
5.2.4 Terrestrial Communities
Section 5.1.4 of the WMP included topical information on terrestrial communities within the Dan
River Steam Station. The DR 134 Project occurs within an upland hardwood forest. The
placement of rip -rap along the western streambank of Stream 3 (affected environment) will not
adversely affect this woodland. Some cutting of trees and clearing of underbrush (shrubs and
saplings) in the uplands may be necessary to facilitate the on-site construction activities.
52

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
5.2.5 Wetlands
April 28, 2017
Stormwater Diversion Project and Associated Projects
Section 5.1.5 of the WMP included topical information on wetlands within the Dan River Steam
Station. No wetlands occur within the DR 134 Project (affected environment). The nearest
wetland is Wetland Q, a headwater forest (Figure 6). Wetland Q occurs to the north of the affected
environment and is hydrologically connected to Stream 3 via a short intermittent channel (Stream
16). No wetland features were depicted within the affected environment on the USFWS NWI Map
(Figure 8).
5.2.6 Streams
Section 5.1.6 of the WMP included topical information on streams within the Dan River Steam
Station. Stream 3 occurs within the DR 134 Project (affected environment) (Figure 6a). The
proposed action will result in an impact of 130 linear feet to Stream 3 from the placement of rip -
rap below the OHWM. The rip -rap will be placed along the western bank of the stream between
two culverted road crossings. The proposed action will not affect Stream 16, a short intermittent
channel that flows into the northern portion of Stream 3.
5.2.7 Riparian Buffers
The Dan River Steam Station is not located within a river basin which has delegated NCDEQ
Riparian Buffer Rules. Therefore, State of North Carolina stream buffers will not apply to the DR
134 Project. The Rockingham County Watershed Protection Ordinance requires a minimum 100 -
foot buffer be established around perennial and intermittent stream features which are shown on
the most recent version of the USGS 7.5 -minute topographic quadrangle. Stream 3 would be
subject to a 100 -foot vegetative buffer, as the stream was shown as a dashed blue -line feature
on the USGS topographic map (Figure 7). Stream 3 is also depicted on the NRCS Rockingham
County Soil Survey (hardcopy version). The placement of rip -rap within Stream 3 would be limited
to the western bank of the stream. Rip -rap would not be placed within the riparian buffer (uplands)
that would extend landward from the top -of -bank of the stream.
53

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
5.2.8 Open Waters
April 28, 2017
Stormwater Diversion Project and Associated Projects
Section 5.1.8 of the WMP included topical information on open waters (ponds) within the Dan
River Steam Station. No ponds occur within the DR 134 Project (affected environment) (Figure
6). No freshwater ponds were depicted within the affected environment on the USFWS NWI Map
(Figure 8).
5.2.9 Floodplains
Section 5.1.9 of the WMP included topical information on floodplains for the Dan River Steam
Station. The review of the FEMA DFIRM delineated flood boundaries, specifically the regulated
100 -year flood boundary, identified the area next to the Dan River and the area encompassing
Streams 3 and 16 and Wetland Q (eastern boundary of steam station) as occurring within the
100 -year flood zone (Figure 9). According to the Rockingham County Flood Damage Prevention
Ordinance (Rockingham County 2007), work conducted within flood -prone areas would require a
Floodplain Development Permit, specifically, Section B - Floodplain Development Application,
Permit and Certification Requirements. The application for the Floodplain Development Permit
must be submitted for review by the county before any development activity begins. Work
conducted within the 100 -year floodplain would require review/consultation with the Rockingham
County Water Resources Department and/or Floodplain Administrator. The DR 134 Project lies
within the 100 -year flood zone; therefore, the proposed action will be addressed with the county
by the stormwater engineer for the project.
5.2.10 Surface Waters
Section 5.1.10 of the W MP included topical information on surface waters for the Dan River Steam
Station. Surface waters include streams, rivers, lakes, and reservoirs. No major, natural water
bodies occur within the steam station or the DR 134 Project (affected environment). The Dan
River abuts the southern boundary of the station. Stream 3, which is located in the southeast
corner of the steam station property, drains directly into the Dan River. A discussion of Stream 3
is presented in Section 5.2.6 of the WMP, as related to the DR 134 Project and the affected
environment.
54

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
5.2.11 Groundwater
April 28, 2017
Stormwater Diversion Project and Associated Projects
Section 5. 1.11 of the WMP included topical information on groundwater for the Dan River Steam
Station. Groundwater refers to subsurface hydrologic resources that are used for domestic,
agricultural, and industrial purposes. Groundwater is stored in natural geologic formations called
aquifers, including surficial aquifer and fractured bedrock aquifer. The DR 134 Project will not
draw water from subsurface/groundwater sources. Therefore, the streambank stabilization
proposed for Stream 3 should have no adverse effect on the surficial aquifer or the fractured
bedrock aquifer.
5.3 DAN RIVER 131 PROJECT
The DR 131 Project will entail the extensionof the culvert pipe downstream at the southern
road crossing of Stream 3. Stream 3, a perennial stream, is located along the eastern
boundary of the Dan River Steam Station near its confluence with the Dan River. The
"affected environment" (project footprint) for the project encompasses the stream reach at
the southern road crossing and a short distance immediately downstream of the crossing.
The affected environment of the DR 131 Project essentially abuts the southern end of the
affected environment of the DR 134 Project. As such, the relevant background information
that was presented for the DR 134 Project (Sections 5.2.1 through 5.2.11) are germaine to
the DR 131 Project and the discussion of relevant background information for the latter
project. The topics (i.e., land use, geology and topography, soils, terrestrial communities,
wetlands, streams, riparian buffers, open waters, floodplains, surface waters, and groundwater)
are discussed below for the DR 131 Project and its affected environment.
5.3.1 Land Use
The land use abutting the affected environment of the DR 131 Project singularly includes
woodland. Land use in the vicinity of the project includes an unpaved roadway, maintained
grassed areas, and the SAB to the west. The Dan River occurs to the south (abuts the southern
boundary of the station).
55

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
5.3.2 Geology and Topography
April 28, 2017
Stormwater Diversion Project and Associated Projects
The DR 131 Project will have no effect on the local geologic features of the steam station. The
extension of the culvert pipe to raise the crest of the southern road crossing will not adversely
affect the dimension, pattern, and profile of Stream 3 within the work area. The changes to
topography (contours) will include:
• The raising of the crest (elevation) of the road crossing by raising the height of the culvert.
• The altering of the existing grade along the approach to the road crossing to facilitate the
tie in to the crossing.
• The clearing of trees and vegetation and removing of stumps to grade along the northern
side of the proposed scarp repair area (northern shoreline of Dan River).
5.3.3 Soils
The DR 131 Project occurs within the Dan River loam, 0 to 2 percent slopes, frequently flooded
(DaA) map unit, which is a hydric soil (Figure 5). The extension of the culvert pipe within Stream
3 downstream of the southern road crossing will only result in minor soil excavations in the stream
to place the culvert extension and then backfill the crossing with stone.
5.3.4 Terrestrial Communities
The DR 131 Project occurs within an upland hardwood forest. The extension of the culvert pipe
at the southern road crossing (affected environment) will not adversely affect this woodland.
Some cutting of trees and clearing of underbrush (shrubs and saplings) in the uplands may be
necessary to facilitate the on-site construction activities.
The clearing of trees and vegetation and removing of stumps to grade along the northern side of
the proposed scarp repair area (northern shoreline of Dan River) will not adversely affect the
quantity and quality of upland hardwood forest on the Dan River Steam Station or throughout
Rockingham County. The tree clearing area will not exceed one-quarter acre of disturbance
based on current site plan details.
56

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
5.3.5 Wetlands
April 28, 2017
Stormwater Diversion Project and Associated Projects
No wetlands occur within the DR 131 Project (affected environment). The nearest wetland is
Wetland Q, a headwater forest (Figure 6). Wetland Q occurs to the north of the northern road
crossing of Stream 3. No wetland features were depicted within the affected environment on the
USFWS NWI Map (Figure 8).
5.3.6 Streams
Stream 3 occurs within the DR 131 Project (affected environment) (Figure 6a). The proposed
action will result in an impact of 15 linear feet to Stream 3 from the extension, downstream, of
the culvert pipe at the southern road crossing of Stream 3. The proposed action will not affect
Stream 16, a short intermittent channel that flows into the northern portion of Stream 3.
5.3.7 Riparian Buffers
NCDEQ Riparian Buffer Rules will not apply to the DR 131 Project. Pusuant to the Rockingham
County Watershed Protection Ordinance, Stream 3 would be subject to a 100 -foot vegetative
buffer, as the stream was shown as a dashed blue -line feature on the USGS topographic map
(Figure 7). The proposed action is not likely to impact woodland within the buffer.
5.3.8 Open Waters
No ponds occur within the DR 131 Project (affected environment) (Figure 6). No freshwater ponds
were depicted within the affected environment on the USFWS NWI Map (Figure 8).
5.3.9 Floodplains
The DR 131 Project (affected environment) occurs within the regulated 100 -year flood boundary
based on the mapped FEMA DFIRM delineated flood boundaries (Figure 9). Work conducted
within flood -prone areas would require a Floodplain Development Permit pursuant to the
Rockingham County Flood Damage Prevention Ordinance (Rockingham County 2007). The DR
57

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
131 Project lies within the 100 -year flood zone; therefore, the proposed action will be addressed
with the county by the stormwater engineer for the project.
5.3.10 Surface Waters
No major, natural water bodies occur within the steam station or the DR 131 Project (affected
environment). The Dan River abuts the southern boundary of the station. Stream 3, which is
located in the southeast corner of the steam station property, drains directly into the Dan River.
A discussion of Stream 3 is presented in Section 5.3.6 of the WMP, as related to the DR 131
Project and the affected environment.
5.3.11 Groundwater
The DR 131 Project will not draw water from subsurface/groundwater sources. Therefore, the
extension of the culvert pipe to raise the elevation of the crest of the southern road crossing should
have no adverse effect on the surficial aquifer or the fractured bedrock aquifer.
M

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
6.0
6.1 EXTENT OF IMPACTS
6.1.1 Stormwater Diversion Project
April 28, 2017
Stormwater Diversion Project and Associated Projects
PROPOSED WATERS OF THE U.S. IMPACTS
Wetlands A, D, F, and H, Stream 1, and the dredge basin occur within the Project area (inclusive
of various Project components) and will be affected by the implementation of the pump -around
stormwater diversion operations. Although Wetlands B, C, E, G and J, Streams 2 and 6, and
Pond AA occur in the general vicinity of the Project components, these waters of the U.S. will not
be affected by the stormwater diversion operations. Prior work activities conducted at WSA-2, as
affecting Wetland H, were permitted by the USACE (Action ID SAW -2014-01477, issued on
September 29, 2014). The issued NWP 18 authorized impacts (permanent) to Wetland H
resulting from overflooding.
All impacts to waters of the U.S. from the implementation of the stormwater diversion operations
are classified herein as permanent, as based on prior conversations in 2016 with Mr. David Bailey
of the USACE, Raleigh Regulatory Field Office. The impacts to Wetlands A, D and F, Wetland H
(impacts previously permitted), and Stream 1 will be due to overflooding. The construction of the
Project component WSA-1 will require removal of vegetation, CCR removal, and regrading to
promote drainage within the existing dredge basin area. Specifically, the cumulative impacts to
the dredge basin area footprint will include dredging, cut/fill, and overflooding. The initial impact
to the dredge basin will be dredging; i.e., the removal of hydrophytic vegetation, primarily
phragmites, and the excavation of CCR material. The removed phragmites will be placed in a
burn box. The stormwater diversion measures will be in place during the excavation and disposal
of CCR materials, which is estimated to occur over a period of approximately three to five years.
Table 7 presents acreage and linear foot values of the proposed impacts to jurisdictional wetlands
and streams within the respective Project components. The Plan View drawing of the Project
components, including the work areas where the impacts to waters of the U.S. will occur, is
provided in Appendix E. Cross-section drawings of Wetlands A, D and F, Stream 1, and the
dredge basin are also provided in Appendix E. The locations of the cross-sections are shown on
Figure 3a and the Plan View drawing.
59

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
At a February 17, 2017, pre -application meeting with Mr. David Bailey of the USACE and Ms. Sue
Homewood of the NCDWR, agency staff requested that the engineering design calculations for
the Project be re-examined to remove the sump volume from the stage -storage curve for the UFA
due to concerns about groundwater infiltration into the sump. Based on the results of this analysis,
the impacts from overflooding to Wetlands D and F and Stream 1 for the preferred pump -around
alternative increased from the impact values that were previously reported for these features at
the time of the pre -application meeting. The impact to Wetlands D and F increased from 0.21 to
0.22 acre, while the impact to Stream 1 increased from 354 to 393 linear feet.
Table 7. Proposed impacts to jurisdictional wetlands, streams, and dredge basin for the
Stormwater Diversion Project, DR 134 Project, DR 131 Project, 36 -Inch Pipe
Closure Project, and 48 -Inch Pipe Closure Project, Dan River Steam Station,
Rockingham County, North Carolina.
Resource Type
Project Component
Proposed Impacts
Wetlands
(acres)
Streams
(linear feet)
Stormwater Diversion Project
Wetland A
WSA-3
0.19
-
Wetland D
UFA
0.16
-
Wetland F
UFA
0.06
-
Stream 1
UFA
-
393
Dredge Basin
WSA-1
1.89
-
Total
2.29
393
DR 134 Project (includes prior work activities)
Stream 3
Bank Stabilization
-
130
Stream 3
Culvert Installation (March 2016)
-
86
DR 131 Project
Stream 3
Culvert Pipe Extension
-
15
Total DR 134 and DR 131 (Stream 3)
231
36 -Inch Pipe Closure Project (previously permitted)
Wetland H
Pipe Closure with
Overflooding (includes fill for
cofferdam)
0.098
-
IS

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
6.1.2 Dan River 134 Project
The DR 134 Project will result in an impact of 130 linear feet to Stream 3 from the placement of
rip -rap below the OHWM. The rip -rap will be placed along the western bank of the stream
between two culverted road crossings. The impact will be permanent. The proposed action
will not impact Stream 16, a short intermittent channel that flows into the northern portion of
Stream 3, or Wetland Q, which is hydrologically connected to Stream 3 via Stream 16. Table 7
includes the linear foot value of the proposed impact to Stream 3 for the DR 134 Project. The
Plan View drawing of the proposed action, including the work area where the impact to Stream 3
will occur, is provided in Appendix E.
Separate from the proposed action to stabilize the western bank of Stream 3, but linked to Stream
3 by past activities conducted within this surface water, was the installation of a culvert at each of
the aforementioned road crossings of the stream in March of 2016. The USACE authorized the
installation of the culverts through a NWP (Action ID SAW -2016-00331). The impacts to the
stream were identified as temporary in the issued NWP. The impacts are henceforth included in
the WMP as permanent. The culverted road crossings were created to facilitate vehicle and
equipment access to the northern shoreline of the Dan River. Access to the Dan River shoreline
is necessary for scarp repair, as needed, during the closure of the ash basins and the transport
of coal ash from the station via a barge loadout area. Therefore, the road crossings will be
maintained indefinitely for future necessity and emergency access to this area of the station. The
two culverts will not be removed and the stream will not be restored (via contour reshaping, etc.)
to the pre -impact condition, including dimension, pattern, and profile. The impact to Stream 3
from the installation of the two culverts comprised 86 linear feet; i.e., 43 linear feet of impact for
61
Proposed Impacts
Resource Type
Project Component
Wetlands
Streams
(acres)
(linear feet)
Stream 4
Pipe Closure with
_
65
Overflooding
48 -Inch Pipe Closure Project (previously permtted)
Wetlands
Pipe Closure with
0.407
-
Overfloodin
Streams
Pipe Closure with
_
448
Overflooding
6.1.2 Dan River 134 Project
The DR 134 Project will result in an impact of 130 linear feet to Stream 3 from the placement of
rip -rap below the OHWM. The rip -rap will be placed along the western bank of the stream
between two culverted road crossings. The impact will be permanent. The proposed action
will not impact Stream 16, a short intermittent channel that flows into the northern portion of
Stream 3, or Wetland Q, which is hydrologically connected to Stream 3 via Stream 16. Table 7
includes the linear foot value of the proposed impact to Stream 3 for the DR 134 Project. The
Plan View drawing of the proposed action, including the work area where the impact to Stream 3
will occur, is provided in Appendix E.
Separate from the proposed action to stabilize the western bank of Stream 3, but linked to Stream
3 by past activities conducted within this surface water, was the installation of a culvert at each of
the aforementioned road crossings of the stream in March of 2016. The USACE authorized the
installation of the culverts through a NWP (Action ID SAW -2016-00331). The impacts to the
stream were identified as temporary in the issued NWP. The impacts are henceforth included in
the WMP as permanent. The culverted road crossings were created to facilitate vehicle and
equipment access to the northern shoreline of the Dan River. Access to the Dan River shoreline
is necessary for scarp repair, as needed, during the closure of the ash basins and the transport
of coal ash from the station via a barge loadout area. Therefore, the road crossings will be
maintained indefinitely for future necessity and emergency access to this area of the station. The
two culverts will not be removed and the stream will not be restored (via contour reshaping, etc.)
to the pre -impact condition, including dimension, pattern, and profile. The impact to Stream 3
from the installation of the two culverts comprised 86 linear feet; i.e., 43 linear feet of impact for
61

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
the northern road crossing and 43 linear feet of impact for the southern road crossing. Table 7
includes the linear foot value of these permanent impacts to Stream 3. The survey plat of the two
impact areas within Stream 3 is provided in Appendix E.
6.1.3 Dan River 131 Project
The DR 131 Project will result in an impact of 15 linear feet to Stream 3 from the extension,
downstream, of the culvert pipe at the southern road crossing of Stream 3. This impact will
be permanent. This impact of 15 linear feet is in addition to the 43 linear feet of impact for the
southern road crossing during the March 2016 culvert installation referenced above (Action ID
SAW -2016-00331). Table 7 includes the linear foot value of the proposed impact to Stream 3
for the DR 131 Project. The Plan View drawing of the proposed action, including the work area
where the impact to Stream 3 will occur, is provided in Appendix E.
6.1.4 36 -Inch Pipe Closure Project
Action ID SAW -2014-01477, issued by the USACE for the 36 -Inch Pipe Closure Project,
provided the following description of the project area and activity: "The proposed project
includes a permanent discharge of fill material into 0.001 acre of wetlands and 4 linear feet
(8 square feet) of streams, resulting in the permanent conversion of 0.097 acre of wetlands
and 61 linear feet (0.003 acre) of stream to open waters in order to close a 36 -inch
corrugated metal pipe that flows under an existing coal ash basin." The total amount of
wetland impact is 0.098 acre and encompasses Wetland H. The total amount of stream
impact is 65 linear feet and encompasses Stream 4. These impacts to jurisdictional waters
are included in Table 7.
6.1.5 48 -Inch Pipe Closure Project
Action ID SAW -2015-01670, issued by the USACE for the 48 -Inch Pipe Closure Project,
provided the following description of the project area and activity: "The proposed project
includes the permanent conversion of 0.407 acre of wetlands and 448 linear feet of stream
to open waters in order to close a 48 -inch corrugated metal pipe that flows under an existing
coal ash basin." The impacted wetlands and streams are shown on the Plan View drawing for
the 48 -Inch Pipe Closure Project (included in Appendix A herein), which was provided to the
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
USACE on July 17, 2015, as part of the Pre -Construction Notification submital package.
The jurisdictional limits of the two impacted wetlands and the three impacted streams were
based on the land survey of these areas by LDSI in July of 2105. The impacted wetlands
and streams were assigned feature identifiers that were specific to the permitting of the 48 -
Inch Pipe Closure Project. As such, they are not included in the set of jurisdictional waters
that comprise the Stormwater Diversion Project, DR 134 Project, and DR 131 project. The
wetland and stream impacts for the 48 -Inch Pipe Closure Project are included in Table 7.
6.2 CUMULATIVE IMPACTS
6.2.1 Stormwater Diversion Project
The USACE is required to determine both potential short-term and long-term effects of a proposed
discharge of dredge and fill material on the physical, chemical, and biological components of an
aquatic environment, including the effects of cumulative impacts. A review of potential cumulative
impacts to waters of the U.S. as a result of the implementation of the stormwater diversion
operations indicates that the proposed discharge would have no significant adverse effects on
the aquatic ecosystem. The rationale for this presumption is based on the following
considerations:
• No contact water will be discharged into waters of the U.S. (wetlands and streams);
therefore, the water quality of downstream receiving waters, specifically the Dan River,
will not be impaired.
• Separation will be provided between water that has contacted CCR material (contact
water) and water that has not contacted CCR material (non -contact water), thereby
preventing opportunities for the degradation of the aquatic ecosystem.
• The overflooding impacts to wetlands and a perennial stream are to be classified as
permanent; however, once the stormwater diversion operations have been concluded, the
flooding of these jurisdictional waters will cease.
• The proposed impacts to the aforementioned waters of the U.S. from the implementation
of stormwater diversion operations should have no cumulative effect on the quality of other
jurisdictional waters occurring within the Dan River Steam Station or beyond the station
property. This presumption is based on the review of environmental documentation
63

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
regarding known current and past federal and non-federal actions at the steam station.
Projects in the planning phase were also considered, including reasonably foreseeable
(rather than speculative) actions that have the potential to interact with the proposed
action. To have reasonable assurances that there would be cumulative effects to projects
when considered together or incrementally, the projects need to occur within similar
timeframes and within a geographic area coinciding with the proposed action.
6.2.2 Dan River 134 Project
The DR 134 Project will entail the placement of rip -rap along the western bank of Stream 3. If the
proposed action is not completed, the streambank will continue to erode and the stability of
the bank will continue to decline. Furthermore, the eroded sediment material would be
transported directly downstream to receiving waters, thus affecting water quality within the
Dan River. This sedimentation is cumulative if not reversed by the stabilization of the
streambank. With the proposed action, no cumulative effects are anticipated.
6.2.3 Dan River 131 Project
The DR 131 Project will entail the the extension, downstream, of the culvert pipe to raise the
elevation of the crest of the southern road crossing of Stream 3. If the proposed action is not
completed, a permanent and stable approach through the road crossing cannot be provided
for future necessity and emergency access to this area of the steam station. This scenario would
also affect safe access to the northern shoreline of the Dan River for scarp repair in the vicinity
of the barge loadout area. Without the proposed action, access to the scarp repair area would be
delayed, thus increasing the potential for erosion along the river shoreline over time. With the
proposed action, no cumulative effects are anticipated.
64

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
65

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
7.0
7.1 MITIGATION REQUIREMENTS
April 28, 2017
Stormwater Diversion Project and Associated Projects
COMPENSATORY MITIGATION
On April 10, 2008, the Department of Defense, in conjunction with the USEPA, issued
Compensatory Mitigation for Losses of Aquatic Resources; Final Rule (33 CFR Parts 325 and
332; 40 CFR Part 230). This mitigation rule is designed to improve planning and management of
compensatory mitigation projects for impacts which are authorized under Department of the Army
permits. The rule stresses a watershed approach to mitigation project locations and requires
ecological performance standards and annual monitoring of an implemented mitigation plan. The
rule emphasizes that qualitative evaluations of impacted area should be conducted and included
in a compensatory mitigation plan and that the compensatory mitigation hierarchy should be
followed as closely as possible. The compensatory mitigation hierarchy prioritizes certain types
of mitigation over other types because mitigation should be conducive to replacing the functions
and values of impacted aquatic resources.
The compensatory mitigation hierarchy is as follows:
• Credits from a USACE-approved mitigation bank
• Advance credits from an in -lieu -fee program
• Permittee -responsible mitigation (PRM) using a watershed approach
• PRM on-site
• PRM off-site
7.2 MITIGATION PLAN
7.2.1 Stormwater Diversion Project
Compensatory mitigation for the proposed impacts is required under the Section 404 IP.
Appropriate avoidance and practicable minimization efforts have been conducted through the
analysis of alternative stormwater diversion plan concepts. However, unavoidable impacts to
onsite waters of the U.S. are necessary to complete the proposed action. The details of the

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
proposed compensatory mitigation plan for these unavoidable impacts are presented below for
the preferred pump -around alternative.
The compensatory mitigation options evaluated for the Project (proposed action) included (1)
credit purchase from an approved private mitigation bank, (2) credit purchase through the North
Carolina Division of Mitigation Services (NCDMS) In -Lieu Fee Program, (3) in-kind restoration
and enhancement of onsite wetlands and/or stream restoration (PRM), and/or (4) in-kind
restoration and enhancement of offsite wetlands and/or stream restoration. Based on the review
of the mitigation options available, it was determined that credit purchase through the NCDMS In -
Lieu Fee Program was the most viable option to obtain compensatory mitigation for impacts to
waters of the U.S. under the proposed action. There are no mitigation banks offering wetlands
and stream credits in the Roanoke River basin at the present time. Onsite mitigation and offsite
mitigation opportunities were not explored because the In -Lieu Fee option was already available.
Wetland and stream mitigation credits are currently available through the NCDMS In -Lieu Fee
Program. The Dan River Steam Station occurs within HUC 03010103. This HUC is not subject
to higher fees within the Roanoke River basin. Table 8 presents the NCDMS mitigation costs for
impacts to jurisdictional riparian wetlands, non -riparian wetlands, cool water streams, and the
dredge basin. Fees for wetlands are calculated in quarter -acre increments. There is a flat fee for
each increment of 0.25 acre; as such, amounts up to 0.25 acre are invoiced at the quarter -acre
level and amounts between 0.25 and 0.50 acres are invoiced at the half -acre level. Mitigation
ratios were applied as follows (final mitigation ratios to be confirmed by the USACE):
• A mitigation ratio of 2:1 was applied for riparian wetlands with a NC WAM overall rating of
medium or low and associated impacts limited to overflooding.
• A mitigation ratio of 2:1 was applied for non -riparian wetlands with a NC WAM overall
rating of medium or low and associated impacts limited to overflooding
A mitigation ratio of 1:1 was applied for the dredge basin (NC WAM overall rating of low)
and associated impacts of vegetation removal, impoundment, and regrading.
• A mitigation ratio of 2:1 was applied for perennial streams with a NC SAM overall rating of
medium or high and associated impacts limited to overflooding.
67

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
• As required by State rules, fees for wetlands are calculated in quarter -acre increments.
There is a flat fee for each increment of 0.25 acre; as such, amounts up to 0.25 acre are
invoiced at the quarter -acre level, while amounts between 0.25 and 0.50 acre are invoiced
at the half -acre level.
No mitigation is offered herein for impacts to Wetland H as the authorized impacts for overflooding
(permanent) to this wetland were previously permitted by the USACE via issuance of NWP 18
(Action ID SAW -2014-01477, issued on September 29, 2014). As the Dan River Steam Station
does not occur within any watershed in the state where Riparian Buffer Rules are administered
by the State of North Carolina, no mitigation is included in Table 8 for impacts to riparian buffers.
The cost estimates presented in Table 8 are preliminary estimates based on mitigation ratios that
have not been verified by the USACE.
Table 8. Potential mitigation costs for impacts to waters of the U.S., Stormwater Diversion
Project, DR 134 Project, DR 131 Project, 36 -Inch Pipe Closure Project, and 48 -
Inch Pipe Closure Project, Dan River Steam Station, Rockingham County, North
Carolina.
Fee Category
Features
Proposed
Impacts
Stormwater Diversion Project
Riparian Wetland
Wetland D - NC WAM Medium Rating
0.16 acre
Wetland F - NC WAM Low Rating
0.06 acre
Non -riparian Wetland
Wetland A - NC WAM Medium Rating
0.19 acre
Dredge Basin
NC WAM Low Rating
1.89 acre
Perennial Stream
Stream 1 - NC SAM High Rating
393 linear feet
DR 134 Project (includes prior work activities)
Perennial Stream
Stream 3 - Bank Stabilization
130 linear feet

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
Perennial Stream
Stream 3 - Culvert Installation (March 2016)
86 linear feet
DR 131 Project
Perennial Stream
Stream 3 - Culvert Pipe Extension
15 linear feet
36 -Inch Pipe Closure Project
Riparian Wetland
Wetland H - Pipe Closure with Overflooding
0.098 acre
Perennial Stream
Stream 4 - Pipe Closure with Overflooding
65 linear feet
48 -Inch Pipe Closure Project
Non -riparian Wetland
Pipe Closure with Overflooding
0.407 acre
Perennial Stream
Pipe Closure with Overflooding
448 linear feet
All Projects Combined
Fee Category
Total Impacts (NCDMS Calculations)
Cost
Riparian Wetland
0.318 acre
(0.50 acre inc. X 2 mit. ratio X $40,297 unit cost)
$40,297
Non -riparian Wetland
0.597 acre
(0.75 acre inc. X 2 mit. ratio X $26,445 unit cost)
$39,667
Dredge Basin
1.89 acres
(2.00 acre inc. X 1 mit. ratio X $26,445 unit cost)
$52,890
Perennial Stream
1137 linear feet
(1137 linear feet. X 2 mit. ratio X $297 unit cost)
$675,378
Sum of All Costs
$808,232
Total cost not approved as yet by the USACE.
• •

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
7.2.2 Dan River 134 Project
April 28, 2017
Stormwater Diversion Project and Associated Projects
Compensatory mitigation for the 130 linear feet of permanent impact to Stream 3 from bank
stabilization will be obtained through the NCDMS In -Lieu Fee Program (credit purchase). A
mitigation ratio of 2:1 was applied for the proposed stream impact (e.g., perennial streams with a
NC SAM overall rating of medium or high). Table 8 presents the NCDMS mitigation cost for this
impact.
Compensatory mitigation for the 86 linear feet of permanent impact to Stream 3 from the March
2016 installation of the two culverts (road crossings) will also be obtained through the NCDMS In -
Lieu Fee Program. A mitigation ratio of 2:1 was applied for the proposed stream impact. Table
8 presents the NCDMS mitigation cost for these impacts.
7.2.3 Dan River 131 Project
Compensatory mitigation for the 15 linear feet of permanent impact to Stream 3 will be obtained
through the NCDMS In -Lieu Fee Program. A mitigation ratio of 2:1 was applied for the proposed
stream impact. Table 8 presents the NCDMS mitigation cost for this impact.
7.2.4 36 -Inch Pipe Closure Project
The total amount of wetland and stream impacts for the 36 -Inch Pipe Closure Project
(USACE Action ID SAW -2014-01477) are 0.098 acre and 65 linear feet, respectively.
Compensatory mitigation for these permanent impacts will be obtained through the NCDMS In -
Lieu Fee Program. A mitigation ratio of 2:1 was applied for the wetland and stream impacts.
Table 8 presents the NCDMS mitigation costs for these impacts.
7.2.5 48 -Inch Pipe Closure Project
The total amount of wetland and stream impacts for the 48 -Inch Pipe Closure Project
(USACE Action ID SAW -2015-01670) are 0.407 acre and 448 linear feet, respectively.
Compensatory mitigation for these permanent impacts will be obtained through the NCDMS In -
Lieu Fee Program. A mitigation ratio of 2:1 was applied for the wetland and stream impacts.
Table 8 presents the NCDMS mitigation costs for these impacts.
70

Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
8.0
8.1 BACKGROUND
April 28, 2017
Stormwater Diversion Project and Associated Projects
PROTECTED SPECIES
Certain plant and animal species are protected by the Federal Endangered Species Act (ESA) of
1973 (16 USC 1531-1544, December 28, 1973, as amended 1976-1982, 1984, and 1988), which
is administered and enforced by the USFWS, Region 4. USACE IP and Nationwide Permit
General Condition 11 require that projects authorized by the USACE do not adversely affect
federally protected species. Should a finding of adverse effect be presumed by the USACE,
coordination with the USFWS is typically required to avoid impacts or minimize impacts to the
practicable extent (Section 7 Consultation).
Amec Foster Wheeler conducted a records search to identify documented federally protected
species (threatened or endangered) and federal Species of Concern which have elemental
occurrences in Rockingham County. As specifically related to the North Carolina Natural Heritage
Program (NCNHP) database search, the query of elemental occurrences encompassed a one -
mile radius of the Dan River Steam Station. Both federal and state databases were reviewed:
• NCNHP database (NCNHP 2017)
• USFWS Information for Planning and Conservation (IPaC) database (USFWS 2017a)
• USFWS Environmental Conservation Online System (ECOS) (USFWS 2017b)
• Raleigh Ecological Services Field Office website (USFWS 2017c)
The purpose of the records search was to determine whether federally listed plant and animal
species or designated critical habitat may be near the Dan River Steam Station. Table 9 presents
the results of the records search for Rockingham County. Known habitats used by the species
listed in Table 9 were compared with the habitats occurring within the Dan River Steam Station
to determine the potential for occurrence for each species. The potential, or likelihood, of
occurrence as listed in Table 9 was based on the following factors:
• A comparison of the known habitat use by these species
• The habitats (if present) within the steam station
• The quantity, quality, and proximity of these habitats
71

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
• Observations of these species or their sign during field reconnaissance
The likelihood of occurrence for listed species was rated as high, moderate, low or unlikely based
on the above criteria.
Table 9. Potential for occurrence of federally listed animal and plant species within the
Dan River Steam Station. Rockinaham Countv. North Carolina.
Common Name
Federal
Potential
(Scientific Name)
Status
General Habitat Description
for
Occurrence
Freshwater Bivalves
Free-flowing streams with a variety of flow regimes.
This mussel is found in a variety of substrates that
James spinymussel
are free from silt.
(Pleurobema collina)
E
Occurs in the James River drainage and the
Unlikely
Dan/Mayo River systems within the Roanoke River
drainage in Virginia, North Carolina, and West
Virginia.
Fishes
Medium to large sized warm, clear streams and small
Roanoke logperch
rivers of moderate to low gradient. Adults usually
(Percina rex)
E
occupy riffles, runs, and pools containing sand,
Unlikely
gravel, or boulders that are free of silt.
Dan River Watershed within Rockingham County.
Vascular Plants
Typically found in open woods, glades, cedar
Smooth coneflower
E
barrens, roadsides, clear -cuts, dry limestone bluffs,
Low
(Echinacea laevigata)
and powerline rights-of-way, usually on magnesium
and calcium rich soils.
Sources: NCNHP List of Rare Plant Species of North Carolina; USFWS IPaC; USFWS Environmental
Conservation Online System - Species Profiles; County list (USFWS Raleigh Ecological Services);
NatureServe Explorer Codes: E = Endangered.
8.2 AFFECTED ENVIRONMENT
8.2.1 Stormwater Diversion Project
Amec Foster Wheeler conducted a general field reconnaissance of the Project area on November
2, 2016, and January 5, 2017. No federally listed, threatened or endangered, animal or plant
species were observed during the field reconnaissance. The quality of the existing habitat in the
Project area is presumed to be less than suitable, or not present, for the listed species with a
potential for occurrence in Rockingham County. The NCNHP database query results included
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
none of the three federally endangered species identified in Table 9; i.e., there were no reported
elemental occurrences within a one -mile radius of the Dan River Steam Station. The results of
the January 5, 2017, database search request to the NCNHP are included in Appendix F. The
results of the January 10, 2017, query of the USFWS IPaC database are also included in
Appendix F. Each listed species identified in Table 9 is discussed below.
The James spinymussel (Pleurobema collina), a federally endangered mussel species, is known
from the upper watershed of the Roanoke River basin in small, headwater tributaries. This
species requires free flowing streams with a variety of flow regimes. It is found in a variety of
substrates that are free from silt. Amec Foster Wheeler presumed that potentially suitable habitat
for the James spinymussel was not present within the Project area; i.e., within the
wetland/stream/pond complex located along the western side of Ash Fill 1. To confirm this
presumption, a visual inspection of Streams 1, 2 and 6 was conducted on November 2, 2016.
The James spinymussel was not observed. Streams 2 and 6 were dry at the time of the stream
bed inspection. Furthermore, this headwater stream complex does not connect to downstream
waters that, in turn, flow into the Dan River. With these considerations, an unlikely potential for
occurrence within the Project area was presumed for this species. The implementation of
stormwater diversion operations would have no effect on the species and its habitat.
The Roanoke logperch (Percina rex) is known from portions of the Chowan and Roanoke River
basins within the Ridge and Valley, Piedmont and Upper Coastal Plain Physiographic Regions,
including recent collections in the Dan River, Mayo River and Smith River watersheds in North
Carolina. Streams 1, 2 and 6 within the wetland/stream/pond complex do not provide suitable
habitat for this species. In addition, this headwater stream complex does not connect to
downstream waters that flow into the Dan River. With these considerations, an unlikely potential
for occurrence within the Project area was presumed for this species. The implementation of
stormwater diversion operations would have no effect on the species and its habitat.
Smooth coneflower (Echinacea laevigata) is a perennial herb typically found in meadows, open
woodlands, cedar barrens, clear cuts, and roadside and utility rights-of-way. The species grows
best where there is abundant sunlight, little competition in the herbaceous layer, and periodic
disturbances. Although there are scattered openings within the Dan River Steam Station,
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Rockingham County, North Carolina
Project No. 7810160559
including openings in woodlands, maintained areas along roadways, and utility corridors, Amec
Foster Wheeler presumed that the potential for occurrence of the smooth coneflower was low.
The powerline corridors within the Project area exhibit a dense herbaceous layer and along some
of the corridors woody shrub species, including silverberry, is recruited. No smooth coneflower
plants were observed during site reconnaissance of the Project area on November 2, 2016, and
January 5, 2017. With these considerations, a low potential for occurrence within the Project area
was presumed for this species. The implementation of stormwater diversion operations would
have no effect on the species and its habitat.
Amec Foster Wheeler also reviewed the NCNHP database query results for state -listed
threatened and endangered species with historic and current elements of occurrence within a
one -mile radius of the Dan River Steam Station. The stream features within the Project area do
not offer suitable habitat for the green floater (Lasmigona subviridis), an endangered mussel
species, or the bigeye jumprock (Moxostoma ariommum), an endangered fish species. No green
floater specimens were observed during the visual inspection of Streams 1, 2 and 6 (stream bed)
on November 2, 2016. Spreading Jacob's -ladder (Polemonium reptans var. reptans), a
threatened plant species, occupies moist, nutrient -rich forests such as bottomlands and rich
slopes. This species was not observed during site reconnaissance of the Project area on
November 2, 2016, and January 5, 2017. In addition, according to the NCNHP database query
results, the last observation date (in Rockingham County) reported for this species was in May of
1956.
8.2.2 Dan River 134 Project
Section 8.1 of the WMP included topical information on protected species for the Dan River Steam
Station. No federally listed, threatened or endangered, animal or plant species were observed
during field reconnaissance conducted in the vicinity of Stream 3 on December 20, 2016. The
NCNHP database query results included none of the three federally endangered species
identified in Table 9; i.e., there were no reported elemental occurrences within a one -mile radius
of the Dan River Steam Station. The results of the January 5, 2017, database search request to
the NCNHP are included in Appendix F. The results of the January 10, 2017, query of the USFWS
IPaC database are also included in Appendix F. An unlikely potential for occurrence within the
DR 134 Project (affected environment) was presumed for the James spinymussel, Roanoke
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Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
logperch, and smooth coneflower. The bank stabilization action for Stream 3 would have no effect
on local or regional populations of these species.
8.2.3 Dan River 131 Project
The instream habitat of Stream 3 and the woodland habitat surrounding the stream are
virtually the same between the DR 131 Project and the DR 134 Project. As such, the
presumptions on potential for occurrence of protected species presented in Section 8.2.2
for the DR 134 Project would apply to the DR 131 Project. The extension of the culvert pipe
at the southern road crossing of Stream 3 would have no effect on local or regional populations
of James spinymussel, Roanoke logperch, and smooth coneflower.
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Rockingham County, North Carolina
Project No. 7810160559
9.0
9.1 BACKGROUND
April 28, 2017
Stormwater Diversion Project and Associated Projects
CULTURAL RESOURCES
Section 404 of the CWA requires that projects authorized by the USACE do not adversely affect
historical properties which are listed or eligible for listing on the National Register of Historic
Places (NRNP). Cultural resources are protected by Section 106 of the National Historic
Preservation Act (NHPA). The Section 106 process consists of consultation with state and federal
agencies, consultation with Native American tribes by the lead federal agency, and the
identification and evaluation of cultural resources for inclusion in the NRHP.
Amec Foster Wheeler conducted a cultural resource screening to assess the presence/absence
of known cultural resources and NRHP-listed resources within a half -mile search radius of the
Dan River Steam Station. The research included a review of archaeological files at the North
Carolina State Historic Preservation Office (NCSHPO) and the online NCSHPO Web GIS Service
(NCSHPO 2017). The investigation did not include field efforts to identify or verify cultural
resources, and no formal coordination with the NCSHPO office was included in this review.
9.2 AFFECTED ENVIRONMENT
9.2.1 Stormwater Diversion Project
No structures or Districts were listed on the NRHP within the Project area or within a half -mile
radius. According to the North Carolina Office of State Archaeology records, at least a portion of
the Project area has been surveyed for archaeological resources (Surveys ER 92-8133, ER 05-
2334 and CH 08-0528), as shown on Figure 10. No archaeological remains were discovered
during the surveys identified above. In 2014, Amec Foster Wheeler conducted a Phase I
archaeological survey on a 129 -acre tract next to the Dan River Steam Station (Amec Foster
Wheeler 2014). Two archaeological sites were identified, sites 31 RK210 and 31 RK12. Site
31 RK210 is a mid -19th to early 20th century site, while 31 RK12 is a Late Prehistoric site. With
regard to NRHP status, site 31 RK210 is not eligible and 31 RK12 is eligible. Three additional sites
were identified within a half -mile of the Project area: 31 RK61, 31 RK5 and 31 RK1. With regard to
NRHP status, site 31 RK61 is unassessed and further work is recommended for 31 RK5. Site
31 RK1 is listed on the NRHP. Table 10 presents these sites and their NRHP status.
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Rockingham County, North Carolina
Project No. 7810160559
April 28, 2017
Stormwater Diversion Project and Associated Projects
Table 10. Identified archaeological sites within a half -mile radius or vicinity of the Dan River
Steam Station. Rockinaham Countv. North Carolina.
Site Number
Description
NRHP Status
Sites within Half -mile Radius of Steam Station
31 RK61
Prehistoric Burials
Unassessed
31 RK5
Prehistoric Woodland
Further work recommended
31RK1
Lower Sauratown Site
Listed on NRHP
Sites in Vicinity of Steam Station
31 RK210
Mid 19th - early 201h century
Not eligible
31 RK12
Late Prehistoric
Eligible
The implementation of stormwater diversion operations is not expected to have an effect on these
five identified cultural resources due to the footprint of the Project and its distance to these
resources. As a part of the permit process, required and routine consultation with the NCSHPO
under Section 106 of the CWA will be undertaken by the USACE Wilmington District.
9.2.2 Dan River 134 Project
Section 9.2.1 of the WMP included topical information on cultural resources for the Dan River
Steam Station. No structures or Districts were listed on the NRHP within the DR 134 Project
(affected environment) or within a half -mile radius. Although a portion of the Dan River Steam
Station has been surveyed for archaeological resources according to the North Carolina Office of
State Archaeology records, the survey areas (Surveys ER 92-8133, ER 05-2334 and CH 08-
0528) do not encompass the affected environment (Figure 10). A Phase I archaeological survey
conducted by Amec Foster Wheeler in 2014 on a 129 -acre tract east of the station also does not
encompass the affected environment (Figure 10). Two sites were identified within a half -mile of
the affected environment (31 RK61 and 31 RK1) (Figure 10). With regard to NRHP status, site
31 RK61 is unassessed. Site 31 RK1 is listed on the NRNP. Table 10 presents these sites and
their NRHP status. The bank stabilization action for Stream 3 is not expected to have an effect
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Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
on cultural resources due to the footprint of the project and its distance to these resources. As a
part of the permit process, required and routine consultation with the NCSHPO under Section 106
of the CWA will be undertaken by the USACE Wilmington District.
9.2.3 Dan River 131 Project
The discussion of cultural resources for the DR 134 Project (Section 9.2.2 above) is
applicable to the DR 131 Project, as the affected environment of the former project abuts
the affected environment of the latter project. The extension of the culvert pipe at the
southern road crossing of Stream 3 is not expected to have an effect on cultural resources due
to the footprint of the project and its distance to these resources.
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Project No. 7810160559
10.1 BACKGROUND
April 28, 2017
Stormwater Diversion Project and Associated Projects
10.0 ENVIRONMENTAL JUSTICE
Environmental justice considers sensitive minority and low-income populations in the community
to determine whether the proposed action and its alternatives may have a disproportionately high
and adverse human health or environmental effect on those populations. Environmental justice
analysis is conducted in compliance with EO 12898 (59 FR 7629), Federal Actions to Address
Environmental Justice in Minority Populations and Low-income Populations. Based on guidance
from the CEQ, minority populations should be identified where either (a) the minority population
of the area exceeds 50 percent (%), or (b) the minority population percentage of the affected area
is meaningfully greater than the minority population percentage in the general population or other
appropriate unit of geographic analysis (CEQ 1997). Low-income populations are defined as
those below the federal poverty thresholds identified using statistical poverty thresholds from the
U.S. Census. USEPA guidance states, "The composition of the population should be compared
to the characteristics of the population (e.g., percentage of minority populations residing near a
proposed project versus the percentage of minority populations located within a single or multiple -
county area surrounding the proposed project' (USEPA 1998). Applying this methodology to the
identification of low-income populations and minorities, the percentage of low-income and minority
populations in the vicinity of the Dan River Steam Station (Rockingham County) is compared to
the percentage of low-income and minority populations located within North Carolina.
Specifically, a low-income or minority population is identified when an area has a poverty rate or
minority population percentage that is significantly greater than the state.
To summarize, EO 12898 instructs federal agencies to identify and address, within the scope of
the proposed programs, policies and activities that are disproportionately high in and/or may have
potentially adverse effects on human health or environmental effects that may occur if such
projects are being implemented. Furthermore, according to CEQ guidelines, U.S. Census Bureau
data are typically used to determine minority and low-income population percentages in the
affected area of a project in order to conduct a qualitative assessment of potential environmental
justice impacts.
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Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
10.2 AFFECTED ENVIRONMENT
10.2.1 Stormwater Diversion Project
As of the 2015 U.S. Census, the racial composition for the City of Eden is approximately 78%
Caucasian. The percentage of the population that is black or African American is 18.6%.
Hispanics comprise 6.1% of the population of the city. Approximately 0.9% are reported as
American Indian or Alaskan native. Three census tracts are present within the City of Eden. They
are identified by the U.S. Census as Census Tracts 405.01, 405.02, and 403.
U.S. Census Bureau data for 2015 indicate that the median household annual income for Census
Tract 403, which includes the Dan River Steam Station and the majority of the City of Eden, is
$37,274 below the average of median annual household income for North Carolina of $46,868,
and the national median household income of $53,889 per year.
In Census Tract 403, the percentage of individuals living below the poverty level is 43.9%,
compared with 18.4% for Rockingham County and 13.5% for the United States according to the
newest (2015) data. Rockingham County was found to be above average for poverty level and
Hispanic, black, American Indian and Alaskan native for several census tracts. None of the
census tracts in Eden had above average levels for these five categories according to the U.S.
Bureau of the Census census tract data for Eden and Rockingham County, North Carolina (U.S.
Bureau of the Census 2015). Thus, the three census tracts within the city have not met the criteria
for environmental justice.
With the above considerations, the implementation of the stormwater diversion operations at the
Dan River Steam Station should have no effect on environmental justice for the surrounding
residential communities.
10.2.2 Dan River 134 Project
Section 10.2.1 of the WMP included topical information on environmental justice for the Dan River
Steam Station. None of the census tracts in the City of Eden had above average levels for the
examined five categories (poverty level, Hispanic, black, American Indian, and Alaskan native)
according to the U.S. Bureau of the Census census tract data for Eden and Rockingham County,
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
North Carolina (U.S. Bureau of the Census 2015). Thus, the three census tracts within the city
have not met the criteria for environmental justice. The bank stabilization action for Stream 3
should have no effect on environmental justice for the surrounding residential communities.
10.2.3 Dan River 131 Project
The discussion of environmental justice for the DR 134 Project (Section 10.2.2 above) is
applicable to the DR 131 Project, as the affected environment of the former project abuts
the affected environment of the latter project. The extension of the culvert pipe at the
southern road crossing of Stream 3 should have no effect on environmental justice for the
surrounding residential communities.
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Rockingham County, North Carolina
Project No. 7810160559
11.1 BACKGROUND
April 28, 2017
Stormwater Diversion Project and Associated Projects
11.0 NOISE
Noise is sound that is produced at levels that can be harmful and may be considered as unwanted
by the surrounding community, properties and residences. The Noise Control Act of 1972 (PL
92-574) and EO 12088 require that federal agencies assess the impact of noise to the
environment. Guidelines for noise have been established by the USEPA based on a calculation
of noise by the daytime and nighttime averages, referred to as the Day/Night Levels (Ldn) (USEPA
1974). The Ldn is reported as A -weighted decibels (dBA) that occur within a 24-hour period.
Table 11 presents USEPA standard noise levels for various community types. Noise levels can
vary depending on setting, built environment, and distance to the noise source. Noise levels by
environment can be variable with levels at 40 decibles (dB) for wilderness areas and 90 dB for
urban areas. Rural communities typically have lower dB than their urban counterparts with rural
communities around 50 dB or less. The USEPA has calculated that an individual exposed to a
noise level of 73 dB for eight hours a day for 40 years would have a hearing loss smaller than 5
dB for 96% of the population.
Table 11. USEPA standard noise levels for various community types.
Community
Day/Night Average
(Ldn — dBA)
Rural
35 to 50
Quiet Suburb
50
Normal Suburb
55
Urban Residential
60
Noisy Urban
65
Very Noisy Urban
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
11.2 AFFECTED ENVIRONMENT
11.2.1 Stormwater Diversion Project
Grading operations are the noisiest activities with equipment generating noise levels as high as
70 to 95 dBA within 50 feet of their operation. Distance would rapidly attenuate noise, and it is
not anticipated that the proposed stormwater diversion operations will occur close enough to
existing residential areas to the north and the west of the Project area to cause disturbances. In
addition, stormwater diversion operations would occur during daytime hours when residents are
away from their homes and would be less disturbed than nighttime hours; therefore, those living
in the vicinity of the Dan River Steam Station are not likely to be affected by noise generated by
the Project.
Noise impacts will be generally localized at the vicinity of the Project. Earthmoving equipment
and other construction machinery and vehicles will create localized increases in noise levels.
These temporary noise impacts should not disrupt normal Dan River Steam Station operations.
Noise levels generally dissipate as distance from their origin increases. Distance from the Project
area must be considered when evaluating potential noise impacts to land uses adjacent to or near
the Project. The proposed stormwater diversion operations will take place entirely within the
property boundaries of the Dan River Steam Station. Because of the absence of noise -sensitive
land uses (i.e., religious, commercial, retail, residential, recreational and educational) immediately
adjacent to the steam station, the Project is not expected to impact noise -sensitive land uses.
11.2.2 Dan River 134 Project
Section 11.2.1 of the WMP included topical information on noise for the Dan River Steam Station.
Noise impacts from construction equipment and vehicles will be generally localized at the vicinity
of the DR 134 Project. These temporary noise impacts will dissipate as distance from their origin
increases. In addition, the proposed action will take place entirely within the Dan River Steam
Station property boundaries. Because of the absence of noise -sensitive land uses (i.e., religious,
commercial, retail, residential, recreational and educational) immediately adjacent to the steam
station, the bank stabilization action for Stream 3 is not expected to impact noise -sensitive land
uses.
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Wetland Master Plan
Dan River Steam Station
Rockingham County, North Carolina
Project No. 7810160559
11.2.3 Dan River 131 Project
April 28, 2017
Stormwater Diversion Project and Associated Projects
Noise impacts from construction equipment and vehicles will be generally localized at the vicinity
of the DR 131 Project. These temporary noise impacts will dissipate as distance from their origin
increases. The proposed action will take place entirely within the Dan River Steam Station
property boundaries. Because of the absence of noise -sensitive land uses immediately adjacent
to the steam station, the work to extend the culvert pipe at the southern road crossing of
Stream 3 is not expected to impact noise -sensitive land uses.
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Wetland Master Plan
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Rockingham County, North Carolina
Project No. 7810160559
12.1 BACKGROUND
April 28, 2017
Stormwater Diversion Project and Associated Projects
12.0 AIR QUALITY
The USEPA has established National Ambient Air Quality Standards (NAAQS) in 40 CFR 50 for
the following criteria pollutants: sulfur dioxide (SO2), particulate matter (with an aerodynamic
diameter of less than 10 microns) (PM10), fine particulate matter (with an aerodynamic diameter
of less than 2.5 microns) (PM2.5), carbon monoxide (CO), ozone (03), nitrogen dioxide (NO2),
and lead.
Air quality standards are provided by NCDEQ (NCDEQ 2015), while regulations are contained in
two subchapters of the North Carolina Administrative Code (NCAC). Regulations that limit air
pollution emissions from stationary sources located within North Carolina are codified under
NCAC Title 15A - Environment and Natural Resources, Chapter 02 — Environmental
Management, Subchapter 02D - Air Pollution Control Requirements (15A NCAC 02D). Stationary
source air quality permitting procedures are codified under Subchapter 02Q — Air Quality Permit
Procedures (15A NCAC 02Q) (NCDEQ 2013).
12.2 AFFECTED ENVIRONMENT
12.2.1 Stormwater Diversion Project
The nearest air quality monitoring station to the Dan River Steam Station in Rockingham County
is the station at Bethany School on Bethany Road (Highway 65) in the City of Reidvsille, which is
overseen by the Winston-Salem Regional Office. 03, SO2, NO2, PM2.5, PM10, and ultraviolet
radiation are the parameters which are measured at this air quality monitoring station.
Rockingham County is an attainment area for 03 as of August 2015, an attainment area for SO2
(August 2015, with new data to be collected beginning January 2017), and an attainment area for
annual PM 2.5 (NCDEQ 2017c).
The implementation of the stormwater diversion operations at the Dan River Steam Station will
not increase air emissions or exceed regulated standards. Controlled actions will include the
control of fugitive dust emissions. "Fugitive dust emissions" means particulate matter that does
not pass through a process stack or vent and that is generated within plant property boundaries
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
from activities such as unloading and loading areas, process areas, stockpiles, stock pile working,
plant parking lots and plant roads (including access roads and haul roads). Methods to minimize
fugitive dust include limiting dusty work on windy days, watering or sweeping roadways often to
ensure that vehicle traffic is not spreading dust, reducing speed limits on unpaved surfaces to ten
miles per hour and enclose storage piles and handling areas if dusty materials are frequently
loaded and unloaded.
With the above considerations, the stormwater diversion operations are not expected to impact
air quality, either locally or regionally.
12.2.2 Dan River 134 Project
Section 12.2.1 of the WMP included topical information on air quality for the Dan River Steam
Station. The bank stabilization action for Stream 3 will not increase air emissions or exceed
regulated standards. Controlled actions will include the control of fugitive dust emissions. The
DR 134 Project is not expected to impact air quality, either locally or regionally.
12.2.3 Dan River 131 Project
The work to extend the culvert pipe at the southern road crossing of Stream 3 will not increase
air emissions or exceed regulated standards. Controlled actions will include the control of fugitive
dust emissions. The DR 131 Project is not expected to impact air quality, either locally or
regionally.
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
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Wetland Master Plan April 28, 2017
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Rockingham County, North Carolina
Project No. 7810160559
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Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
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Rockingham County, North Carolina
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USEPA. 1998. Final guidance for incorporating environmental justice concerns in EPA's NEPA
compliance analysis.
USFWS. 2016. U.S. Fish and Wildlife Service. National Wetlands Inventory Wetlands Mapper.
http://www.fws.gov/wetlands/. Website accessed December 20, 2016.
USFWS. 2017a. U.S. Fish and Wildlife Service. Information for Planning and Conservation (IPaC)
database. http://ecos.fws.gov/ipac/. Website accessed January 10, 2017.

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
USFWS. 2017b. U.S. Fish and Wildlife Service. ECOS Environmental Conservation Online
System. http://ecos.fws.gov/ecp/. Website accessed January 10, 2017.
USFWS. 2017c. U.S. Fish and Wildlife Service. Raleigh Ecological Services Field Office.
http://www.fws.gov/raleigh/. Website accessed January 9, 2017.
USGS. 2017. U.S. Geological Survey. Southeast Eden, North Carolina digital 7.5'topography.
Weakley, A.S. 2015. Flora of the Southern and Mid -Atlantic States. UNC Herbarium, North
Carolina Botanical Garden, University of North Carolina at Chapel Hill. 1320 pp.
U.S. Geological Survey (USGS) digital 7.5'topography (Figure 7; Southeast Eden, North Carolina
Quadrangle) (USGS 2017),
91

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
FIGURES

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amec
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NOTE: THIS FIGURE IS FOR REFERENCE ONLY.
— — I Ash Ponds
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— —i, County Boundary
----------------------------------
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M
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i
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Figure 1 - Site Location Map
Stormwater Diversion Project
and Associated Projects
Dan River Steam Station
Rockingham County, NC
PROJECT NO: 7810-16-0761 FIGURE NO:
Fells 1111
Caswell
N
5i
0 2 4 Miles
I I
DUKE
ENERGY.

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I
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Notes \t
e
s
(ft)Op UFA 548.05 393 0.22 Not Previously -
p
er�\m
�
Ait1t%
e\
d
WSA-1 545.91 0 1.89 Not Previous) permitted
�Op
LOD WSA-2 520.65 65 0.10 Previously permitted�o
<dal WSA-3 535.6 NA 0.19 Not Previously permitted
CONTACT WATER
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�1SECONDARY
0 CONTAINMENTAREA
Q 1 1\ LEGEND
'�o �5
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fix U LOD COMPOSITE LIMITS OFDISTURBANCE (SEE NOTE 1)
LANDFILL AREA (UNDER SEPARATE CONTRACT)
DREDGE AREA DAI
RIVER LANDFILL STORMWATER DIVERSION AREA/
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zew
Nip- 1 i J11)\ \\ STORMWATER DIVERSION PIPE LINE 1WATER TANK STORMWATER DIVERSION PIPE LINE 2
25 -YEAR, 24 HOUR RUNOFF APPROX. LOCATION
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INUNDATION ELEVATION 548.05' EXISTING TOWER TO STORMWATER DIVERSION PIPE LINE 4
-LOCATED ABE RESTORMWATER DIVERSION PIPE LINE 5
LINE1 UFATOSW010
(PUMP ARD) DUKE PROPERTY A EXISTING PROPERTY BOUNDARY
-xV — - - - - - — EXISTING 100 -YEAR FLOODPLAIN
oo EXISTING STREAM
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Il EXISTING SANITARY SEWER FORCE MAINLOD APPROX. LOCATION - I SS SS EXISTING GRAVITY SANITARY SEWER PIPE
OF
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GI&A/�
1 \ /� _ _� �— UPLAND FLOW AREA (UFA) \ _
_ � LINE 4 -WSA 3 TO WSA 1 � ( / � � � \VA \ \1 \ � ' G G EXISTING NATURAL GAS PIPELINE
CAP - \
\ SEE INSET A \ \ LINE 5 - SAB TO CONTACT I J I1 \\\
EXISTING ... \\� \ \� V - - - -G - - - -G - - - -G - EXISTING NATURAL GAS PIPELINE (NOT SURVEYED)
PIPE WATER TANKIv 1 v v
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C CELL 3 • ' "- _ - -G / - _ I �I� _ V AI _ xor+w xaiw EXISTING OVERHEAD ELECTRIC UTILITY
PROPOSED DIVIDER BERM U -G _ / \V -
VEXISTING UTILITY EASEMENT
UPLAND FLOW AREA (UFA) `c
LINE 1 - UFA TO SW -010
(PUMP AROUND)
LINE 2 - WSA 1 TO CONTACT WATER -
TANK
LINE 5 - SAB TO CONTACT
WATER TANK
WATER STORAGE AREA (WSA 1)
REFERENCES
x EXISTING FENCE
lb
ASH FILL �� o �. / �/� / u / , / ���� ���y v` A 1 \\\ I �� EXISTING VEGETATION BOUNDARY
WATER STORAGE AREA (WSA 1),// / EXISTING TOWER TO � / A� V 1 l �� I V I EXISTING PIPES
,�._ /Z/ BE RE -LOCATED 25 -YEAR, 24 HOUR RUNOFF
NIL/ / / �' INUNDATION ELEVATION = 535.6' \�V A� A \� EXISTING RIPRAP
:
------------
/// / INUNDATION BOUNDARY (SEE NOTE 2)
///// I APPROX. LOCATION �
\ �i I� //�� '�� %/�%/�/ OF NEW TOWER \ \V�\VA�1 �V\h
/ ice'' // / l \ I �II� NOTES:
1. COMPOSITE LIMITS OF DISTURBANCE INCLUDES INITIAL SUBMITTAL, APPROVED ADDENDA 1 THROUGH 6.
X/_
�2. INUNDATION BOUNDARY REFLECTS WATER SURFACE ELEVATION DUE TO RUNOFF FROM THE 25 -YEAR,
24-HOUR DESIGN STORM.
1. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC
METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON FEBRUARY 7, 2014 BY LDSI, INC.
2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM LIGHT DETECTION AND
RANGING (LIDAR) OBTAINED FROM NCDOT WEBSITE ON AUGUST 7, 2015.
ABSAT ISSUE # I DATE
INCHES 1 2 3 ITENTHS 10
J +
LINE3-WSA2TOWSA1
��\\ I � - moi/ � � �• �, � / � � A SECONDARY ASH BASIN
40
j I` �li��i� � / /� i 1 \ (SAB)
WATER STORAGE AREA (WSA 2)
cl-
Qb
-YEAR, 24 HOUR RUNOFF
INUNDATION ELEVATION = 520.T�
DESIGN
20 30
PRIMARY ASH BASIN
REV I DATE I JOB NO. I PROJECT TYPE I DES I DFTR I CHKD I ENGR
Plotted By: Jordan, Chris Sheet Set: Line 1 Pump Alternative Layout: 1 FULL STORMWATER PIPE PLAN April 24, 2017 07: 58: 48am O: \Duke\DanRiver\7810160559 Dan River Stormwater Reroute\Exhibit\Line 1 Pump IP Figures\PUMP AROUND ALTERNATIVE 3A.dwg
7
DESCRIPTION
�Il
Environment & .
Infrastructure
2801 YORKMONT ROAD
amec
SUITE 100
CHARLOTTE, NC 28208 foster
TEL: [phone]
FAX: [phone] wheeler
LICENSURE:
NC ENG: F-1253
NC GEOLOGY: C-247
SEAL
NOT FOR
CONSTRUCTION
I
TITLE
150 0 150 300 FT
PREFERRED PUMP ALTERNATIVE (400 GPM)
DAN RIVER STEAM STATION
INDIVIDUAL PERMIT APPLICATION
FOR
ISSUED FOR PERMITTING - NOT RELEASED FOR CONSTRUCTION
DUKE
ENERGY `
SCALE: AS SHOWN
DES: CSJ
DWG TYPE: DWG
DFTR : CSJ
04/24/2017 6-0559
CHKD: CHR
DATE:
ENGR: CHR
FILENAME:
PUMP AROUND ALTERNATIVE.dwg
APPD: CHR
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22"x34"
3A
O
9 10
0
W
D
m
C
C)
F

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2 3 4 5 6 7 8 3B REV O
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DUKE PROPERTY DUKE PROPERTY 01 III 111 �1 I
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��v�vv V11�/// _ I� � \ \v
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- _ ��\) A� 111\\\V\ �V v
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/
L0
\V
,_- --- -- ----_--
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\�PROPOSED ENERGY �\ \A\ \
\V\
550 DSSIPATOR (SW-010)
26'X20'RTY -DUKE PROPE
BORROW AREA
�
l
PROPOSED TIE-IN WITH CITY\\\1
OF EDEN SANITARY SEWER
PROPOSED FORCE MAIN FROM , = \ \ - I i J ^ ` \ \\\\\\\ \\\II` \ \ I \ ��- j I / -
LOD ✓ _ ���� / �) i X I) A - \\\ VA\�\ \VAV / �j x I �� % - PROPOSED STREAM AND WETLAND IMPACTS - PUMP AROUND ALTERNATIVE
STORAGE TANK TO TIE-IN WITH
C
CITY OF EDEN �l / \ \\\\\ \\\ I I \ \� // Water Surface Elevation due to runoff
` ~ \ \\\\ / / / / Area Name from 25- ear 24-hour Design storm Stream Impacts Wetland Impacts Notes
--- tw —
�II I �j l� �/ 'I�/ / / � � / � � ,
y ft g (linear feet) (acres)
o �.°� ��� , � � - � _ `-- _�=x — — — = — _ _ � �\� v vw � \v�� II I I v 1 1 v � � v E ( )
UFA 539.5 0 0.00 Not Previously permitted
001t aR WSA-1 545 91 0 189
Not Previously permitted
A
LOD _ app � _ - - _...,.--.------- � � "�,_.:���—_: _ AVI� AA \ - Previously permitted
I,A�\\ - 1 \�V A ��i� J
`--- WSA-2 520.65 65 0.1
.
WSA-3 5356 NA 0.19 Not Previously permitted
CONTACT WATER Y
\ / A 65 Z. Not Previousl permitted
/ - g TOTAL
XSECONDARY0,7 _ v
J TANK AND ��
,��,, ,I,I I _ _ _
CONTAINMENT AREA -
Q A I/ � -- .A I II /// // I (
o a Q - �, x o e - — loll% 1, , 1,
LEGEND
� �_ \ ,� IIII I 1 � � , � �JIIII � I 1111 \ 1 � I I \\
f J Q LOD_" 700 EXISTING MAJOR CONTOU ( ) [ EF. ]
A�� /
� �� V I I I IIII IIII I\\� f1� i/ R 10' R 1 2
. x �
I I I I A �I I1 �I i1 I �/ III II \ I I-�- �� //
- _ } (x vx�_A \ xI o�r-_, vvI vA �� /v �I%\ �\\1�,\ V•1 Iv�� _- I\ � ��V �� x �����/�Xi �/ i/�//(y//�U� ��� 1I��' I I�I/� �_, ��
/�
_
,
EXISTING MINOR CONTOUR (2') [REF.
F. 1, 2]
I 700 PROPOSED MAJOR CONTOUR (10')
_600 PROPOSED MINOR CONTOUR (2
/
W to _-540 LOD
COMPOSITE LIMITS OF DISTURBANCE (SE
E NOTE 1)w
1�,111,�11 1 1 1v v vvvvv`y
( � / � A V � \ _ • - 0 � 11 IIII � � VII I / � 1 V � � /� /� / LANDFILL AREA UNDER SEPARATE CONTRACT)
I I \ \
DREDGE AREA
PROPOSN
ED DAf(
_1 1 STORMWATER DIVERSION AREA
RIVER LANDFILL
III
- � A 111 1� � 111 I\ -I
II i �Illll \\V� \\ \ \I � � V� \\\\� ��
�\ \ \\\\y 1 (EXISTING ASH �I�I� I \I \ 1 \ \ STORAGE TANK AND APPURTENANT FACILITIES
v vwv VA �\) .: FILL 1 AREA) / VA�
V I I ) yi i A VA P. r BORROW AREA (UNDER SEPARATE CONTRACT)
( \ 1
4-0 (DY �.po, ; / �����.�� v\VA A \\ 1, 11 1 CELL 1 FORCE MAIN
SAB TO CONTACT v6
�7
STORMWATER DIVERSION PIPE LINE 1LINE 5
WATER TANK II
k \ \ —J I ( 1 > > > STORMWATER DIVERSION PIPE LINE 2
A -A /f � /� � I s � I � I I I �
APPROX. LOCATION �// �i//� I I I
5 - vvv �� �1 1 1 1 1 1 1 I I AV
� OF NEW TOWER �/// 530 I A \I A
\ _ > > > > _ STORMWATER DIVERSION PIPE LINE 3
X,1 \ V \
EXISTING TOWER TO
I
STORMWATER DIVERSION PIPE LINE 4
BE RE LOCATED \A
\
STORMWATER DIVERSION PIPE LINE 5
LINE 1 - UFA TO SW -010
_ - - - - - - EXISTING PROPERTY BOUNDARY
� ��DUKE PROPERTY
I � (PUMP AROUND) � l 0 � �, 1I A1\1 +
I\ \\
UPLAND FLOW AREA (UFA) A A
\— - - - - - — EXISTING 100 -YEAR FLOODPLAINx1\ 4
—
Illl
••• � ///` / �'° / j III II IIII I � / I I �, \ ��\ \ \ \ EXISTING STREAM
111111 �IIII<< A- �` ,A \ \\
II Il EXIST
ING WETLAND
I I III
LOD
� •••.�O\ / " l- -I
I/
�\/I,I �
_- FM EXISTING SANITARY SEWER FORCE MAIN -�APPROX. LOCATIO64)- ////III
- - OF EXISTING POLE SS SS EXISTING GRAVITY SANITARY SEWER PIP
E
TO BE REMOVED
STORAGE WSA 3�\
WATER RAE AREA \ \ 0 EXISTING SANITARY SEWER MANHOLE
25 -YEAR, 24 HOUR RUN OFF a �\(
INUNDATION ELEVATION = 539.5' O - ����G 530 / V�A�� \ \ 1 I \
/ O ��� -� LINE 4 - WSA 3 TO WSA 1 / ( / \VA \ \{ \\ I G G EXISTING NATURAL GAS PIPELINE
SEE INSET A
_ , � --� 1�\\ 1A� � 1 1 � ?.
/ A �- V� \\� EXISTING • • • LINE 5 - SAB TO CONTACT
WATER TANK `\\ -G - - - -G - - - -G - EXISTING NATURAL GAS PIPELINE (NOT SURVEYED)
1
� ��PIPE..
22v ... .. G I - IV A I,
$- —x**xaw EXISTING OVERHEAD ELECTRIC UTILITY
PROPOSED DIVIDER BERM L - _ -
\ bo
°`, bZ�_�L O - - V 1V EXISTING UTILITY EASEMENT
EXISTING FENCE
p, \ \ / EXISTING VEGETATION BOUNDARY
\
Cb ASH FILL 2 o° )�� / �' /'�' v
UPLAND FLOW AREA (UFA) EXISTING T�O
1 II
�
NERT
EXISTING PIPES
WATERSTORAGE AREA (WSA 1) �/ BE RE -LOCATED 25 -YEAR 24 HOUR RUNOFF�
INUNDATION ELEVATION = 535.6' \A\ \\V� EXISTING RIPRAP
o+
- - - - - - - - - - - - INUNDATION BOUNDARY (SEE NOTE 2)
LINE 1 -UFA TO SW -010 Qj, APPROX. LOCATIONI
AIAVh A � I
(PUMP AROUND) r / /
SII �'' �/ /� OF NEW TOWER I A ° )�I NOTES:
1. COMPOSITE LIMITS OF DISTURBANCE INCLUDES INITIAL SUBMITTAL, APPROVED ADDENDA 1 THROUGH 6.
l II IIII
2. INUNDATION BOUNDARY REFLECTS WATER SURFACE ELEVATION DUE TO RUNOFF FROM THE 25 -YEAR,
24-HOUR DESIGN STORM.
SECONDARY ASH BASIN
\ \ (SAB)
LINE 5 - SAB TO CONTACT �� v \ // WATER STORAGE AREA (WSA 2)
WATER TANK
F WATER STORAGE AREA (WSA 1)bb
25 -YEAR, 24 HOUR RUNOFF
INUNDATION ELEVATION = 520.7 \\ \ \ ✓ - / ���/ \/,;
40 0 417
0 80 FT
/ ��\ � A�\A �- ►�/ / I// �/ //j /
�A�
REFERENCES \ \ l 1. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC �lART\ ����� r/ / �� �'rl / /// 11 15
/ / PRIMARY ASH BASIN
METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON FEBRUARY 7, 2014 BY LDSI, INC.
2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM LIGHT DETECTION AND
RANGING (LIDAR) OBTAINED FROM NCDOT WEBSITE ON AUGUST 7, 2015.
ABSAT ISSUE # DATE DESIGN IREVI DATE I JOB NO. I PROJECT TYPE I DES I DFTR I CHKD I ENGR I DESCRIPTION
INCHES 1 2 3 TENTHS 10 20 30 4 5 6 1
LINE 3 - WSA 2 TO WSA
LINE 2 - WSA 1 TO CONTACT WATER 04D
TANK
TANK ^ U01
Plotted By: Jordan, Chris Sheet Set: Line 1 Pump Alternative Layout: 1 FULL STORMWATER PIPE PLAN April 24, 2017 07: 59: 38am Q:\Duke\DonRiver\7810160559 Dan River Stormwater Reroute\Exhibit\Line 1 Pump IP Figures\PUMP AROUND ALTERNATIVE 3B.dwg
Environment & .
Infrastructure
2801 YORKMONT ROAD
amec
SUITE 100
CHARLOTTE, INC 28208 foster
TEL: [phone]
FAX: [phone] wheeler
LICENSURE:
INC ENG: F-1253
INC GEOLOGY: C-247
SEAL
NOT FOR
CONSTRUCTION
I
TITLE
150 0 150 300 FT
PUMP ALTERNATIVE (49,000 GPM)
DAN RIVER STEAM STATION
INDIVIDUAL PERMIT APPLICATION
FOR
ISSUED FOR PERMITTING - NOT RELEASED FOR CONSTRUCTION
DUKE
ENERGY `
SCALE: AS SHOWN
DES: CSJ
DWG TYPE: DWG
DFTR : CSJ
04/24/2017 6-0559
CHKD: CHR
DATE:
ENGR: CHR
FILENAME:
PUMP AROUND ALTERNATIVE.dwg
APPD: CHR
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22"x34"
3B
O
9 10
0
595
F

W
F
2 3 4 5 6 7 8 4 R= O
V) I 1
DUKE PROPERTY —\�� - — DUKE PROPERTY- A: �% //
// / % /
/ / / / //_) �I/-- -- y ,_ _�` ,;� I II I(/////�// IIII�IIII(IIII l \\\�► I //i/�/i/ ��/\—� / // l I 1 I IV \ V 1 v. ��' v N
t
I
�I
LODE \— �— -, �—�_ ;-------���\\u
— — vv 111 1 � //
—� �
LOD �� / / I r \\\\ \ \ — = I I 'i/�/ / / I / / / I 1
_41
�
LOD
_
- __
I 1 \\\VAA\ \VAl
DUKE PROPERTY
\ \\\ III
�j���/ � � I / '�/i/�x,-� � / \ - \ \ V 1 �����,,AA11 1111 I // � � � `� \
A\\�\\\\ I / / / // ��� __-----� \VA
��_'IIIIIIIIIII II%�/ / ///'�//_
\ \AV 1 \ \
550
\ 1 / DUKE PROPERTY - PROPOSED v \ \ \ I I I I l I � �
_ I — BORROW AREA
PROPOSED TIE-IN WITH CITY - \ \\�� \ \ \ _ - _ k r / \ gyp\ \ \\
OF EDEN SANITARY SEWER
PROPOSED FORCE MAIN FROM
—- PROPOSED STREA-M, AND WETLAND
ND IMPAC� TS -GRAVITY ALTERNATIVE IVESTORAGE TANK TO TIE-IN WITH A AVA
CITY OF EDEN
_OD
�Water Surface Elevation due to runoff Stream Impacts Wetland Impactsacts
storm Area Name from 25 -year, 24-hour Design (linear feet) (acres)
Notes
(ft)
-407 (
_
\� \
UFA 539.5 0 0.00 Not Previously permitted
Qo i WSA-1 545.91 0 1.89 Not Previously permitted
►
v -
LODWSA-2 520.65 65 0.10 Previously permitted
J
' — �_ V ❑ / — — \ — — =`- \ V1 \y' v r
I I111/ /' i �I/ _X • x�- �X \- \X AIvg / \,,�__ 1i,J/
-3
NA 0.19Not Previo
CONTACT WATER WSA usly permitted
2.18 Not Previously permittedTOTAL (NEW IMPACTS) 65TANK AND
0 SECONDARY ��
CONTAINMENTAREAQ �� �, LEGEND
1I1 � \�� ') [REF. 1 2]LOD700 EXISTING MAJOR CONTOUR (10
Op
O
O EXISTING MINOR CONTOUR (2') [REF. 1, 2]
W -600 _ A X//\1� / / / )III III 1111 II I I I III II I ( \I 1 I \ 1 I I I I�l I /�/ /I \ \ ( I _ 700 PROPOSED MAJOR CONTOUR (10')
PROPOSED MINOR CONTOUR (2')
LJ
CD A\ 1 �� i// 1 1 1 1 1 1 I I \ VA VA \
co \ A x
�
I I A \ VI � V � / _ _ � / / (� � � '. , • ••••• ••• ,1 � I II I IIII E I�I I I I I III � � 11 II �1 �\ V�\\VA� � - _�= 540 LOD COMPOSITE LIMITS OF DISTURBANCE (SEE NOTE 1)
I I I
�� LANDFILL AREA (UNDER SEPARATE CONTRACT)
( I \ / I � \\ \ \ \ \\ � \ ' .•..•.• ' ",�T \ � ` - � I 1111 IIII' 1 ) \ II\D
1 _• I // x/ v� �_ A 1 �'
PROPOS DAN 1�11�DREDGE AREA
RIVER LANDFILL I/��iIl, iI
STORMWATER DIVERSION AREA
(EXISTING ASH
/ A \
\\� A STORAGE TANK AND APPURTENANT FACILITIESCELL 2FILL 1 AREA)
f \
\ VA ,��� \ 1 1 '7., A�\\� V A \ \ \ V 1 \ \ V 1 ( ( I \ BORROW AREA (UNDER SEPARATE CONTRACT)
CELL 1 �, > Al \\V ) V A \ \ V\� \ } I 11 11 \ \ V (I 1 �� \ V A A — > > > > —
� � \V�\ FORCE MAIN
\
LINE 5 - SAB TO CONTACT SX01 f I �\\\\ 1�A V A A\ \
—>—>—>—>— STORMWATER DIVERSION PIPE LINE 1WATER TANK
STORMWATER DIVERSION PIPE LINE 2
11 1 VA V V\
APPROX. LOCATION
OF NEW TOWER \\ I \ \1 \ \ > > > > STORMWATER DIVERSION PIPE LINE 3
530 I
EXISTING TOWER TO �'/ V A Vexvv \w I / I \ \ I \ — > > > > STORMWATER DIVERSION PIPE LINE 4
A\�\�A o �\ 1��\
BE RE -LOCATED
STORMWATER DIVERSION PIPE LINE 5
x/ / x \ DUKE PROPERTY � 1 / � / +
\ _ \\ / V III 1 \�, ✓/ I -- -- --
IIII EXISTING PROPERTY BOUNDARY
�—_ _ �� �\ v -- �� ( / / I I/� f ',i/)>� 1�1 I •`' � � / -- ��� �
— = =
— - - - - - — EXISTING 100 -YEAR FLOODPLAIN
—x
/ I /
— ——
EXISTING STREAMA —
EXISTING WETLAND
'� 11111 I�
LOD — /= —��. —' :':: - i l/��_�_ ��I� /l /ijlll III//I/� V
25 YEAR, 24 HOUR RUNOFF _
FM EXISTING SANITARY SEWER FORCE MAIN
OF EXISTING
.LOCATION - l - / /� // 111 II I ��I \ \ 11 ��� SS SS EXISTING GRAVITY SANITARY SEWER PIPE
INUNDATION ELEVATION - 535.6 I i- / / III II I
OF EXISTING POLE -� / _ �_ i / /III�1
1 I \ x �� TO BE REMOVED WATERY STORAGE AREA (WSA 3) �� �� �I�( (, - _����
-
O - V A y I L ��A\� V \ �S EXISTING SANITARY SEWER MANHOLE
VA�V 1 1 1= v
LINE 4 - WSA 3 TO WSA 1 /
UPLAND FLOW AREA (UFA) -_
/��\� �� / G G EXISTING NATURAL GAS PIPELINE
A SEE INSET A �- V� y\� / - - LINE 5 - SAB TO CONTACT GABION CHU I E\I I� - - - -G - - - -G - - - -G - EXISTING NATURAL GAS PIPELINE NOT SURVEYED
AVA \ I \\ I �. v ( )
_ — _ I 1 (OUTFALL sw o10)\� V v
� WATER TANK
/ \ \ / CELL 3 / \ [; / __ _ 1 11 \ \(_ - xa+w xaiw EXISTING OVERHEAD ELECTRIC UTILITY
PROPOSED DIVIDER BERM � � � ` U�'� ! � LINE 1 -UFA TO SW -010 - � �-�� � ' - � )
5BO ,�\ \\ r (GRAVITY)
_ �� \�
_
EXISTING UTILITY EASEMENT
7
�
EXISTING FENCE
ASH FILL o� �. /j ���,� /!�/�\\ I EXISTING VEGETATION BOUNDARY
6-
// / �� L EXISTING PIPES
WATER STORAGE AREA WSA 1 I
( ) �� SAV ° � j //j /. �� � CAP EXISTING PIPE � / / � � �'��VA�� \. > � I
�'
EXISTING RIPRAP
e . \+ •� moi, iii / / �, �, � / v � \\\� �
EXISTING TOWER TO A\ \ VAV A (� i I - - - - - - - - - - - - INUNDATION BOUNDARY (SEE NOTE 2)
/ \�j / BE RE -LOCATED \ \IV ��
1 j // // / A 1 �1 11 11) �� NOTES:
I
UPLAND FLOW AREA (UF111 I I
j j�/ I APPROX. LOCATION .� I IIII IIII �I I', 1. COMPOSITE LIMITS OF DISTURBANCE INCLUDES INITIAL SUBMITTAL, APPROVED ADDENDA 1 THROUGH 6.
A) I; j �� \ OF NEW TOWER d
�� V A 2. INUNDATION BOUNDARY REFLECTS WATER SURFACE ELEVATION DUE TO RUNOFF FROM THE 25 -YEAR,
O 24-HOUR DESIGN STORM.
150 0 150 300 FT
LINE 3 -WSA 2 TO WSA 1
< SECONDARY ASH BASIN
LINE 2 -WSA 1 TO CONTACT WATER OOi ? l ��A\ 1A11 7 �� (" A (SAB)
TANK �� UO �< / I ll' i l
' r 1 I�' /�� �/
1
J\ // WATER STORAGE AREA (WSA 2)
LINE 5 - SAB TO CONTACT
WATER TANK
WATER STORAGE AREA (WSA 1)
11 1 1'00
LINE 1 -UFA TO SW -010
(GRAVITY) -YEAR, 24 HOUR RUNOFF 7" �\ ///INUNDATION ELEVATION 520.7'
400 40 80 FT
REFERENCES
��//'_���'/l ���� v� /////%/%��/'/�',
1. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC / \ A / / // /� / i�� PRIMARY ASH BASIN �� ���� ��� A�A� /AV it/\/���
METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON FEBRUARY 7, 2014 BY LDSI, INC.
2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM LIGHT DETECTION AND
RANGING (LIDAR) OBTAINED FROM NCDOT WEBSITE ON AUGUST 7, 2015.
ABSAT ISSUE # DATE DESIGN
INCHES 1 2 3 TENTHS 10 20 30
REV I DATE I JOB NO. I PROJECT TYPE I DES I DFTR I CHKD I ENGR
Plotted By: Jordan, Chris Sheet Set: Line 1 Pump Alternative Layout: 1 FULL STORMWATER PIPE PLAN April 24, 2017 08: 01: 12am 0: \Duke\DanRiver\7810160559 Dan River Stormwater Reroute\Exhibit\Line 1 Pump IP Figures\GRAVITY ALTERNATIVE.dwg
7
DESCRIPTION
Environment & .
Infrastructure
2801 YORKMONT ROAD
amec
SUITE 100
CHARLOTTE, NC 28208 foster
TEL: [phone]
FAX: [phone] wheeler
LICENSURE:
NC ENG: F-1253
NC GEOLOGY: C-247
SEAL
NOT FOR
CONSTRUCTION
I
TITLE
GRAVITY OPTION
DAN RIVER STEAM STATION
INDIVIDUAL PERMIT APPLICATION
FOR
ISSUED FOR PERMITTING - NOT RELEASED FOR CONSTRUCTION
DUKEDWG
NE
E RGY`
SCALE: AS SHOWN
DES: CSJ
TYPE: DWG
DFTR : CSJ
6-0559
CHKD: CHR
DABE:04/24/2017
ENGR: CHR
FILENAME: GRAVITY ALTERNATIVE.dwg
APPD: CHR
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22"x34"
4
O
9 10
0
m
C
O
F

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..* 7 N
�+ 15 K
4� I
S N M
• 10 _ J G z B 1 Ash Fill 7
3 i
— D /
16
\ Ash Fill 2 Dredge Basin
�1
0111'
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. 12 He -
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14 Ash Basin,�,t t
'V
AdW
f! , r. • 0 600 1,200 Feet e
Station Boundary Streams Stormwater Diversion Project Area Figure 6a - Jurisdictional Waters Map
Ash Ponds Wetlands DR 134 Project Area Stormwater Diversion Project
41,10L_-- — and Associated Projects DUKE
amec 48 -Inch Pipe Closure Project Ponds �_ DR 131 Project Area \. ENERGY.
foster � Dan River Steam Station
Wheeler 36 -Inch Pipe Closure Project Rockingham County, NC
PROJECT NO: 7810-16-0761 FIGURE NO: 6a
NOTE: THIS FIGURE IS FOR REFERENCE ONLY.
P:\Energy\Projects\Duke\2016\7810-16-0559 Dan River Stormwater Diversion and Individual Permit Application\INDIVIDUAL PERMIT APPLICATION\GIS\Figure6.mxd, User: jason.hightower, Date: 4/26/2017 3:24:03 PM

P:\Energy\Projects\Duke\2016\7810-16-0559 Dan River Stormwater Diversion and Individual Permit Application\INDIVIDUAL PERMIT APPLICATION\GIS\Figure6.mxd, User: jason.hightower; Date: 4/26/2017 3:24:03 PM

• N
a • • r • f . i-_..
� Yom, , • , •� � � � . • , °.-�
j-1000Pabo"n
9DEN' x
0
v 1 160
Ash Fill 1
i
sews g- a Ash Fill 2 � • � �-
Di
+-aF /� • 0 0 \;� _ ,' /, /Secondary-
•
enter, tei -'tom ��. ti `���' ` / . ��'', Ash Basin
V
t �, /y, � I `�•— / � % ' -mow r �
�� �� • i i
-�� : �! .Primary
c • / -. Ash Basin
ago
P krpl
0 600 1,200 Feet
Service Layer Credits: Copyright:© 2013 National Geographic �'��1 I IAN
I
i 7
Figure 7 - USGS Topographic Map
• Station Boundary 48 -Inch Pipe Closure Project Stormwater Diversion Project Area Stormwater Diversion Project
�'
amec , L _ _ j Ash Ponds � 36 -Inch Pipe Closure Project DR 134 Project Area and Associated Projects DUKE
�
foster Dan River Steam Station ENERGY.
wheeler DR 131 Project Area Rockingham County, NC
7
NOTE: THIS FIGURE IS FOR REFERENCE ONLY. PROJECT NO: 7810-16-0761 FIGURE NO:
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Freshwater
kl Pond - -
10
i.+ 7t a
Freshwater
/s
S � � Pond spa
'; � • _ � Ash Fill 1 \
l �
1 j /
4 r.
Freshwater
r
Ash Fill 2 Pond Pond �� 1/I �'
Secondary
t
Ashl Basin -
• ` ` Freshwater
Pond
.. , . '+.� ✓ - �: ! Ash Basin
r
fe
►- � Pond
1W r
_ = y N , •
+' .;
a,
•• P ' >. Lake ' • _ * .-{;, .. -
r. 0 6001,200 Feet
'tService aver6ret Si�ur sri, 'gi Globe, ♦�; A I I 1
Station Boundary Freshwater Pond DR 134 Project Area Figure 8 - USFWS National Wetlands Inventory
Stormwater Diversion Project
amec
,1� L_—__J Ash Ponds Lake C DR 131 Project Area and Associated Projects DUKE
_ _
foster Stormwater Diversion Project Area Riverine � 48 -Inch Pipe Closure Project Dan River Steam Station \. ENERGY.
wheelerRockingham County, NC
36 -Inch Pipe Closure Project
NOTE: THIS FIGURE IS FOR REFERENCE ONLY. PROJECT NO: 7810-16-0761 FIGURE NO: 8
P:\Energy\Projects\Duke\2016\7810-16-0559 Dan River Stormwater Diversion and Individual Permit Application\INDIV] DUAL PERMIT APPLICATION\GIS\Figure8.mxd, User: jason.hightower, Date: 4/21/2017 3:43:26 PM

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or
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0111'1 Ash Fill 2 °.
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09,
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A
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00
y
'
Service Layer CredffS Sour sri, igi Globe,
0
f. • ° , I
600
I
1,200 Feet
t
,
Figure 9 - Floodplain Map
L Station Boundary
Stormwater Diversion Project Area
DR 134 Project Area
Stormwater Diversion Project
14A
L_—_—, I Ash Ponds
®100yr Flood Boundary
�� DR 131 Project Area
and Associated Projects
DUKE
amec
foster
36 -Inch Pipe Closure Project
Q 48 -Inch Pipe Closure Project
Dan River Steam Station
Rockingham County, NC
�,
ENERGY.
wheeler
NOTE: THIS FIGURE IS FOR REFERENCE ONLY.PROJECT
NO: 7810-16-0761
FIGURE NO: 9
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P:\Energy\Projects\Duke\2016\7810-16-0559 Dan River Stormwater Diversion and Individual Permit Application\INDIVIDUAL PERMIT APPLICATION\GIS\Figure10.mxd, User: jason.hightower; Date: 4/21/2017 3:48:48 PM

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
APPENDIX A
PREVIOUSLY ISSUED USACE PERMITS

U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action Id. SAW -2016-00331 County: Rockingham U.S.G.S. Quad: NC -SOUTHEAST EDEN
GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION
Permittee: Duke Energy
Attn: Steve Cahoon
Address: 410 S. Wilmington Street
Raleigh, NC 27601
Size (acres) —0.5 Nearest Town Eden
Nearest Waterway Dan River River Basin Upper Dan
USGS HUC 03010103 Coordinates 36.491589 N, -79.711634 W
Location description: This project is located at the Duke Energy Dan River Steam Station, along the Dan River, directly below
the secondary Ash Basin in the southeastern corner of the station property, in Eden, Rockingham County, North Carolina.
Description of projects area and activity: This project involves the permanent discharge of fill material into 270 linear feet (0.06
acre) of the Dan River, necessary to rebuild and stabilize an actively eroding bank directly below the berm for an existing ash
basin.
Applicable Law: ® Section 404 (Clean Water Act, 33 USC 1344)
❑ Section 10 (Rivers and Harbors Act, 33 USC 403)
Authorization: Regional General Permit Number or Nationwide Permit Number: NWP 13 Bank Stabilization.
SEE ATTACHED NWP GENERAL, REGIONAL AND SPECIAL CONDITIONS
Your work is authorized by the above referenced permit provided it is accomplished in strict accordance with the attached
conditions and your submitted application and attached information dated and received 2/15/2016 via email. 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 Quality (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.
This Department of the Army verification does not relieve the permittee of the responsibility to obtain any other required Federal, State
or local approvals/permits.
If there are any questions regarding this verification, any of the conditions of the Permit, or the Corps of Engineers regulatory program,
please contact David Bailey at 919-554-4884 extension 30 or David.E.Bailey2C&usace.army.mil.
oigitany,19,W by
BNILEY DNVIDEI3]9283>3fi
ON: c=US, o=US.GOvernmem, Ou=DOD,
1 1 oO BA ou=USA,
3736
Corps Regulatory Official: cn=fI2016..02.18 E.13),285W Date: 2/18/2016
Oate:2016.02.1809:90:11 -0500'
Expiration Date of Verification: 3/18/2017
Copy furnished:
Sue Homewood, NCDENR-DWR, 450 W. Hanes Mill Rd, Suite 300, Winston-Salem, NC 27105
John Ellis, USFWS, P.O. Box 33726, Raleigh, NC 27636-3726

SAW -2016-00331 Special Conditions:
A waiver from Nationwide Permit 13 requirement (c) is granted such that this activity may exceed an
average of one cubic yard per running foot placed along the bank below the plane of the ordinary high
water mark.
2. Note that Regional Condition 4.1.3 cannot apply in this case given that the project will involve rebuilding
a river bank waterward of its current location.
Corps Regulatory Official:
Expiration Date of Verification: 03/18/2017
Digitally signed by
BAILEY.DAVID.E.1379283736
ou=-US, —U.S. Government,
DoD, ou=PKI, ou=USA,
cn=6AI LEY.DAVID.E.1379283736
Date: 2016.02.18 09:40:37 -05'00'
Date: 2/18/2016

Determination of Jurisdiction:
A. ❑ Based on preliminary information, there appear to be waters of the US including wetlands within the above described project
area. This preliminary determination is not an appealable action under the Regulatory Program Administrative Appeal Process
( Reference 33 CFR Part 331).
B. ❑ There are Navigable Waters of the United States within the above described project area subject to the permit requirements of
Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act. Unless there is a change in the law or our
published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
notification.
C. ® There are waters of the US and/or wetlands within the above described project area subject to the permit requirements of
Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the law or our published regulations,
this determination may be relied upon for a period not to exceed five years from the date of this notification.
D. ❑ The jurisdictional areas within the above described project area have been identified under a previous action. Please reference
jurisdictional determination issued _. Action ID: _.
Basis For Determination: The proiect area exhibits water bodies with ordinary high water. The water bodies on the site
include the Dan River, a Traditionally Navigable Water. This determination is based on an office verification by David E.
Bailey (USAGE) on 2/18/2016.
E. Attention USDA Program Participants
This delineation/determination has been conducted to identify the limits of Corps' Clean Water Act jurisdiction for the particular site
identified in this request. The delineation/determination may not be valid for the wetland conservation provisions of the Food Security
Act of 1985. If you or your tenant are USDA Program participants, or anticipate participation in USDA programs, you should request
a certified wetland determination from the local office of the Natural Resources Conservation Service, prior to starting work.
F. Appeals Information (This information applies only to approved jurisdictional determinations as indicated in B
and C above).
This correspondence constitutes an approved jurisdictional determination for the above described site. If you object to this
determination, you may request an administrative appeal under Corps regulations at 33 CFR Part 331. Enclosed you will find a
Notification of Appeal Process (NAP) fact sheet and request for appeal (RFA) form. If you request to appeal this determination you
must submit a completed RFA form to the following address:
US Army Corps of Engineers
South Atlantic Division
Attn: Jason Steele, Review Officer
60 Forsyth Street SW, Room 10M 15
Atlanta, Georgia 30303-8801
Phone: [phone]
In order for an RFA to be accepted by the Corps, the Corps must determine that it is complete, that it meets the criteria for appeal
under 33 CFR part 331.5, and that it has been received by the Division Office within 60 days of the date of the NAP. Should you
decide to submit an RFA form, it must be received at the above address by
**It is not necessary to submit an RFA form to the Division Office if you do not object to the determination in this correspondence.**
G Digit ally Signedby BAILEY.DAVID.-D.D,2 PKI
DN: r=US, .-U.S. Govemmen[, ou=DoD, ou=Plfl, -USA,
­MlCorps Regulatory Official. G D-20EYDA1809.41:00-3J36
Date: 2016.02.18 09:41:00 -05'00'
David Bailey
Date: February 18, 2016 Expiration Date: February 18, 2021
The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we continue to do so,
please complete our customer Satisfaction Survey online at hllp://corpsmgpu.usace.gM.mil/cm apex/f?p=136:4:0.

NOTIFICATION OF ADMINISTRATIVE APPEAL OPTIONS AND PROCESS AND
REQUEST FOR APPEAL
Applicant: Duke Energy (attn.: Steve Cahoon) File Number: SAW -2016-00331 Date: February 18, 2016
Attached is: See Section below
F-11 INITIAL PROFFERED PERMIT Standard Permit or Letter ofpermission) A
❑ PROFFERED PERMIT Standard Permit or Letter ofpermission) B
❑ PERMIT DENIAL C
® APPROVED JURISDICTIONAL DETERMINATION D
❑ PRELIMINARY JURISDICTIONAL DETERMINATION E
SECTION I - The following identifies your rights and options regarding an administrative appeal of the above decision.
Additional information may be found at or http://www.usace.army.mil/Missions/CivilWorks/RegulatoryProgramandPennits.aspx
or the Corps regulations at 33 CFR Part 331.
A: INITIAL PROFFERED PERMIT: You may accept or object to the permit.
• ACCEPT: If you received a Standard Permit, you may sign the permit document and return it to the district engineer for final
authorization. If you received a Letter of Permission (LOP), you may accept the LOP and your work is authorized. Your
signature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety, and waive all
rights to appeal the permit, including its terms and conditions, and approved jurisdictional determinations associated with the
permit.
• OBJECT: If you object to the permit (Standard or LOP) because of certain terms and conditions therein, you may request
that the permit be modified accordingly. You must complete Section II of this form and return the form to the district
engineer. Your objections must be received by the district engineer within 60 days of the date of this notice, or you will
forfeit your right to appeal the permit in the future. Upon receipt of your letter, the district engineer will evaluate your
objections and may: (a) modify the permit to address all of your concerns, (b) modify the permit to address some of your
objections, or (c) not modify the permit having determined that the permit should be issued as previously written. After
evaluating your objections, the district engineer will send you a proffered permit for your reconsideration, as indicated in
Section B below.
B: PROFFERED PERMIT: You may accept or appeal the permit
• ACCEPT: If you received a Standard Permit, you may sign the permit document and return it to the district engineer for final
authorization. If you received a Letter of Permission (LOP), you may accept the LOP and your work is authorized. Your
signature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety, and waive all
rights to appeal the permit, including its terms and conditions, and approved jurisdictional determinations associated with the
permit.
• APPEAL: If you choose to decline the proffered permit (Standard or LOP) because of certain terms and conditions therein,
you may appeal the declined permit under the Corps of Engineers Administrative Appeal Process by completing Section II of
this form and sending the form to the division engineer. This form must be received by the division engineer within 60 days
of the date of this notice.
C: PERMIT DENIAL: You may appeal the denial of a permit under the Corps of Engineers Administrative Appeal Process by
completing Section II of this form and sending the form to the division engineer. This form must be received by the division
engineer within 60 days of the date of this notice.
D: APPROVED JURISDICTIONAL DETERMINATION: You may accept or appeal the approved JD or provide new
information.
• ACCEPT: You do not need to notify the Corps to accept an approved JD. Failure to notify the Corps within 60 days of the
date of this notice, means that you accept the approved JD in its entirety, and waive all rights to appeal the approved JD.
• APPEAL: If you disagree with the approved JD, you may appeal the approved JD under the Corps of Engineers
Administrative Appeal Process by completing Section II of this form and sending the form to the district engineer. This form
must be received by the division engineer within 60 days of the date of this notice.

E: PRELIMINARY JURISDICTIONAL DETERMINATION: You do not need to respond to the Corps regarding the
preliminary JD. The Preliminary JD is not appealable. If you wish, you may request an approved JD (which may be appealed),
by contacting the Corps district for further instruction. Also you may provide new information for further consideration by the
Corps to reevaluate the JD.
SECTION II - REQUEST FOR APPEAL or OBJECTIONS TO AN INITIAL PROFFERED PERMIT
REASONS FOR APPEAL OR OBJECTIONS: (Describe your reasons for appealing the decision or your objections to an initial
proffered permit in clear concise statements. You may attach additional information to this form to clarify where your reasons or
objections are addressed in the administrative record.)
ADDITIONAL INFORMATION: The appeal is limited to a review of the administrative record, the Corps memorandum for the
record of the appeal conference or meeting, and any supplemental information that the review officer has determined is needed to
clarify the administrative record. Neither the appellant nor the Corps may add new information or analyses to the record.
However, you may provide additional information to clarify the location of information that is already in the administrative
record.
POINT OF CONTACT FOR QUESTIONS OR INFORMATION:
If you have questions regarding this decision and/or the
If you only have questions regarding the appeal process you may
appeal process you may contact:
also contact:
District Engineer, Wilmington Regulatory Division
Mr. Jason Steele, Administrative Appeal Review Officer
attn: David E. Bailey
CESAD-PDO
Raleigh Regulatory Field Office
U.S. Army Corps of Engineers, South Atlantic Division
3331 Heritage Trade Drive, Suite 105
60 Forsyth Street, Room 1OM15
Wake Forest, North Carolina 27587
Atlanta, Georgia 30303-8801
Phone: [phone]
RIGHT OF ENTRY: Your signature below grants the right of entry to Corps of Engineers personnel, and any government
consultants, to conduct investigations of the project site during the course of the appeal process. You will be provided a 15 day
notice of any site investigation, and will have the opportunit to participate in all site investi ations.
Date:
Telephone number:
Signature of appellant oragent.
For appeals on Initial Proffered Permits send this form to:
District Engineer, Wilmington Regulatory Division, Attn: David Bailey, 69 Darlington Avenue, Wilmington, North Carolina
28403
For Permit denials, Proffered Permits and approved Jurisdictional Determinations send this form to:
Division Engineer, Commander, U.S. Army Engineer Division, South Atlantic, Attn: Mr. Jason Steele, Administrative Appeal
Officer, CESAD-PDO, 60 Forsyth Street, Room 1OM15, Atlanta, Georgia 30303-8801
Phone: [phone]

Action ID Number: SAW -2016-00331 County: Rockingham
Permittee: Duke Energy (attn.: Steve Cahoon)
Project Name: Duke Energy - Dan River Steam Station / secondary ash basin bank stabilization /
Eden / Rockingham County / industrial
Date Verification Issued: February 18, 2016
Project Manager: David Bailey
Upon completion of the activity authorized by this permit and any mitigation required by the permit,
sign this certification and return it to the following address:
US ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
attn: David E. Bailey
Raleigh Regulatory Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
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

U.1. AMV1Y UUKYS UY EINGENELKS
WILMINGTON DISTRICT
Acroa-, la. 2SAW-:4914-01477 County: macKin,nunl U.s.G.S. quad: 1NC-5i7U 1 iiLA51 LUEN
GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION
Pcrmi[lcc: liLLKc „erEy Pro£ress Abent: AMSC Environment & Infrastructure Inc.
attti: Steve Cahoon attn: Josh Bell, P.E.
Aaara.s: to 0 S Wilm .,gton Street Address: 2801 Yorkmont Road Suite 100
R..Ie.,h, NC.37601 Charlotte, NC 28208
ti:Zc (uU-e7') 1.151 Nearest Town LLden
NUNPIVA U 1- to U..n Kivca River Basin u„t,er Dan. Nortn Car.,l;..a.yir,i;.;a.
U6G6 r1U17 1561u11115 Coordinates .55.491704 N -'19.11bi31 W
Leeot:v-. ucnvri,,tivT,: t nu 4,: o;act L loc..tcil Ft tl;c Uakc L11crrr DailK,:,a ltc:,., ,tat;ui-. an the —.
no.-tl:est 3:TI
ac ortl:c asGnL
eo41.,�n nW3m. ,-vwiR1.,[cl U.9 ..—,ile northeast of the existing ower generation glant.
LJc.oPiyt�o,-. of pra�ects area and activity: The �,ro,.osed .,ro;ect includes a permanent discharge of tell material into O.00I acre of
wetlands and 4 linear feet _(8_sq. _ft.) of streams, resulting in theyermanent conversion of 0.097 acre of wetlands and 61 linear
feet (0.003 acre) of stream_ to open waters in order to close a 36 inch corrugated metal pipe that flows under an existing coal
r.,n 6w.:n.
Applicable Law: ® Section 404 (Clean Water Act, 33 USC 1344)
❑ Section 10 (Rivers and Harbors Act, 33 USC 403)
Authorization: Regional General Permit Number or Nationwide rermi[ number: nWr ja,v,inor „ischarges.
5CC Al !AMICI) ICGr .,, 1VWY UZ1vZKAL KZiyJD1vAL A1V.0 ")I-CC1AL CalvL1Lllalva
Your work is authorized by the above referenced hermit provided it is accomplished in strict accordance with the attached
conditions and your submitted application and attached information dated 7/3/2014 (received 71712014) and revised
information dated 9/12/2014 (received 9115/2014). Any violation of the attached conditions or deviation from your submitted
plans may subject the permittee to a stol, 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 naiionwide 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
aciivity is completed within twelve monihs 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 ziUzi (as indicaletl aoove) may also require an intlivitluat .>eciion yv, water yuatity CerThicadon. it ou
should contact the tvC vivision of water yuatity tietepnone y ty-a'ur-'o [1'u) to determine section 40t requirements.
ror activities occurring within the twenty coastal evn..l:c., 3..njev[ iv .-c5nlAo.. :; :avP in.. Co. ma Aaeu Act kCAMA),
prior to oeginning worK you mus[ contact Lne 1V.C. or
1113 1Jc1r.F[PRe777[ Ot the A.mi., Yc.-itivatioia doe. .-..,t rclicvc tnc Permittee of the respow�.nii ty to obtain any othrr icyulica ucdc.wl,
)tale o.- lveW uPPPa r W I�1PcP117:t�.
If there are any questions resardins this verification, any of the conditions of the Permit, or the Corps of Enbineers regulatory
Probram, Please contact David Bailcy at 910-251-4469 or David.E.Bailey2fo.usace.army.mil.
Corps Regulatory Official: _ _ Date: 'v9/z..9/c014
v"tc of Verification: 03/18/2017
Copy furnished:
Sue Homewood, NCDENR-DWR, 585 Waughtown Street, Winston-Salem, NC 27101

Special Conditions:
1) The ponding .,ester from the authux i ed inundation must be re-routed as shown and described in
r igure 03 and Fi,ure 04 included in ,,our submitted re, ised informatiuu dated 9/12/2014 (received
911512014).
2) Please note that future pha3es of pipe closures and other coal ash basin cleanup activities at the
Duke Ener,, Dan Ri, er Steam Station may be „sidered part of a single and complete project,
and impacts may be consideree cumulative, with rest,ect to comt.ensato.T mitigation and
Nationwide Perri -tit thresholds, with impacts permitted during earlier phases autharized and
documented under Action ID: SAW -2014-01477.
3) Given that ine auinorized imt.acts will be in glace for se, eral y cars without an enforceable
timeline or restoration method_ they are considered permanent with respect to impact type anti
potentially for future phase compensatory mitigation requirements.
4) riease notz that this Nationwide Permit authorization expires on 371872017, aL.d yuu must request
reauthorization for pumping/draw-down activities as permitted here -in if t.re-existin., conditions
are not restored in the subject wetland/stream complex by that date.
Corps Regulatory Official: % vate: 95/zyiLV1z;
David -. Bailey
t;xpiration Late or ver:r:r,z;t;o..: 9.3gatLlil l

Determination of Jtlrisdktivn:
A. ❑ Based on preliminary information, there appear to be waters of the US including wetlands within the above described project
area. This preliminary determination is not an appealable action under the Regulatory Program Administrative Appeal rrocess
( Reference 33 CFR Par! 331).
B. ❑ There are Navigable Waters of the united 5lales within the aoove tlescribetl project area suoject to tile permit requirements of
Seciion 10 of the Rivers and Harbors ftCL anti section 44 of the Clean water r.cr. unless mere is a change in the taw or our
published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
notification.
C. ® There are waters o, the us antl,or weuanm witnin ifie aoove Rescrimtl project area suoject to the permit requirements of
Section 4'vr+ of the Clean w ater r.ct k%wr.)V,a usC § unless mere is a change in the taw or our pumisned regulations,
this determination may be relied upon for a period not to exceed live years trom the bate of Lnis notincation.
u. ❑ f he jurisaictional areas witnin me aoove desc-:oca ^l meet ..+-e.+ nr..� peen .8e.-.t:t:ca -_.-.aeP a Y.c-.vee vette.-.. rte@moo efcl'c.-.ce
jurisakdonai determination issues . Actio.—. 1L: 5AW-
111. a.to cnli'.Bais ic,.tare. , itn UiU.2n..,- l3, •n write- unR ,w,e[laiiiis as del6;e1 in the l`J2i i w.;tla„d
acll;.ewtle+: +'...all�+a .+e8 lh:vnle a c ivnul au lcincnta. i lie �rutc(•a iRClnilC uu ninaRlcti tnll)tltar lI1 to 1)un Kivu - a
Ke1�L';-cl 1'0,.'..,ne.'t wutt:� Krw .;n.en no,—,� c�:.-�t-tl to tnt: leu,. Ki;�r u r.-at�itier...il lvari able Wate.-- u..3 unutt:n
-ctl�-.dam.
0E. detcl :..rt'.yo 13 t)V lllarii] L. 15i.i1cV IUTACN;) on 8/1 312 0 1 4.
KCnlunKa:
E. Attention USDA Program rarticipants
This delineation/determination has been conducted to identify the limits of Corps' Clean Water Act jurisdiction for the particular site
identified in this request. The delineation/determination may not be valid for the wetland conservation provisions of the Food Security
Act of 1985. If you or your tenant are USDA Program paRicipanw, or anticipate participation in USDA programs, you should request
a certified wetland determination from the local office of the Natural Resources Conservation Service, prior to starting work.
F. A1.i.eals Info, mations (This information applies only to approved jurisdictional determinations as indicated in B
and C above).
This correspondence constitutes an approved jurisdictional determination for Ine aoove descrioed site. ii you ooject to finis
determination, you may request an administrative appeal under Corps regulations at» Crm ran .» i. meioses you will !ma a
Notification of Appeal Process (Nr.r) fact sheet and request for appeal (mrr►) Corm. ii you request to appeal tnis determination you
must submit a completed fort. form to the following address:
115 A,a..y Cv,Ns or
5vu111 Aitv-.-,t-Ic L:r,�ivN
ALL.-': Jure.. Steele, 1ZcriCy. ❑tLiw�
So 1"ol9ytn Siicc[ 5w, Kpp,.. laMl.)
A[lant.., tievaS.G .0.0.i-bbai
Phone: [phone]
In order for an mri. to be accepted by the Corps, the Corps must determine ulat it is complete, inat it meets the criteria tar appeal
under 33 CFm pal L.%) f .a, and that it has been received vy ule Livision Vince witnin o'u days of the date of the ivttr. 5nouia you
decide to submit an RFA form, it must be received at the above a'udress oy ><vz5twfrr.
to M-.. KVA Lvarm to the Othee :t you do .tot onjcct tv the determination in this eorr, syondenee.—
Cotes Resulatory Official:_.—
fl.-.sib
Date of JD: 9/A9/20t4 expiration Late o1 jL: yrcy/Luf y
1 Me L,.rt..et :- ee ;IieB to tnv n:,,nest terel of vj ljvrt to trc Fza%u. 1 o neip us cnswc .,� uon.tirse to no au,
,,lease ee...f,lete au' ci3.rtamxi bur rey e..ltoe ui I.tt,,:ll.e_I�tutP. Y.u'uCCaii. rcY •cOi���.

1v0Ttrii;Al tviv yr AUiviiniS vxA itl VE Arrr.AL Ort IONS AND PROCESS AND
REgUEST FOR APPEAL
Applicant: Duke Ener Pra ress File N_ um_ ber: SAW-2013-01477ate: 0 912 912 0 1 4 f
AuaC_nea is: Scc Jcctlon nclo�i
INITIAL PROFFERED PERMIT Standard Permit or Letter ofpermission), A
"I PROFFERED PERMIT Standard Permit or Letter of ermission rs
"I PERMIT DENIAL C
APPROVED JURISDICTIONAL DETERMINATION D
U PRELIMINARY JURISDICTIONAL DETERM[NA t 101y
SECTtOty t - t he following iaemittes your rights an[[ opr.o-s .-egar[1i.,, u;-, :V wt puna of Inc ..bogie
AW1itiornat :ntv.,..atio...-.y oo Tvcrta at or rttvw TT,- , sace.a.my.mil/Missions/C_iv_i]_Works/Re,ulato,yPro ramandPermits.asL!x
or the Corps regulations at 33 CFR Part 331.
A: INITIAL PROFFEREL rEnvni t : r ou may accept or ouject to the permit.
• ACCIMP I: t[ yoe -0001 Ga .. St.iAwra rc....:t; you mar sisn the permit document and return it to the district ensineer for final
authorization. If you received a Letter of Permission (LOP), you may accept the LOP and your work is authorized. Your
signature on JTe Standard Permit or acceptance of the LOP means that you accept the permit in its entirety_ and waive all
rights to appeal the permit, including its terms and conditions_ and approved jurisaictionat Determinations associates witn the
permit.
OBJECT: If you object to the permit (Standard or LOP) because of certain terms and conditions therein, you may request
that the permit be modified accordingly. You must complete Section a of this form and return the form to the District
engineer. Your objeciions must ue receiven Dy the District engineer witnin 6v says of u:e DuTe
forfeit your right To appeal me rerrrt:[ ;., n:� ierirv. Upoa, .c�Gipt or yoet.-totter; the district engineer will evaluate your
ob�cct�ons and may: (a) modify the permit to address all of your concerns, (b) modify the permit to address some of your
objections, or (c) not modify the permit having determined that the permit should be issued as previously written. After
evaluating your objections, the district engineer will send you a proffered permit for your reconsideration, as inuicatea in
Section v belma.
B: PROFFERED PERMIT: You may accept or appeal the permit _
• tiCCr r t : if you receiveu a wanaata rermit, you may s:g... Lne Fc. -111'.1 Deee. ,v„[ w. -.a rG[wrn h to Inc aisT,ME G.-.r,1,.Ge. ro.- final
�eu.or:�w[ion. a yoe .-ccci.t:U u Lotter of Permission (LOP), you may accept the LOP and your work is authorized. Your
sil6nature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety, and waive all
rights to appeal the permit, including its terms and conditions, and approved jurisdictional determinations associated with the
permit.
■ APPEAL: Ifyou choose to decline the proffered permit (Standard or LOP) because of certain terms and conditions therein,
you may appeal the declined permit under the Corps of Engineers Administrative Appeal Process by completing Section 11 of
this form and sending the form to the division engineer. This form musi be received by the division engineer within 130 Days
Of the date of this notice.
C: PERMIT DENIAL: You may appeal the denial of a permit under the Corps of Engineers Administrative Appeal Process by
completing Section II of this form and sending the form to the division engineer. This form must be received by the division
engineer within 60 days of the date Of this notice.
L: ArrJKU V :u j uxiauiC i TONAL uETERMINATION: You may acceptor appeal the approved JD or provide new
information.
• ACCEFT : x ou do not neeu to notity me Corps to accept an approve0 iii. raiture To notiry Lne Ce.—Y, Biu::. 60 any of [nG
Date o[ tn:s notice e..!!, lr_[yoe uGCGpL II.c wpp.o.ca JLJ :n :[a rntiroty; and waive all rishts to appeal the approved JD.
APPEAL: If you disagree with the approved JD, you may appeal the approved JD under the Corps of r.ngineers
Adminisirative Appeal rrocess by completing Section it minis Corm ana sensing tile form to me District engineer. t n:s Tai..,
MUST fie receive0 Dy n.e a:v:s:e.-. ePl,:,-.oe.- w;u.:e 60 auy� or n:G autG of [n;s ..ot'.ec.

1',: rKh]U11V11rVAKY ./UK15111C,11VlYAL 11b I K1V111VA 11VA: yva (Iv .imi nvvEl to ic,Fvnd to tro Corps acrarding the
iL). inv. 1j.c1.1`R'7-.u.—y iii :s not appealable. Ifyou wish, you may request an approved JD (which may be appealed),
by contacting; the Corps district for further instruction. Also you may provide new information for further consideration by the
Corps to reevaluate the JD.
SECTION lI - REQUEST FOR AP-FAL, orv15iEC. i IGtv5 10 Ary INN I I/Al, PROrrEKGu rr-Rivii I
IILZA50Nl VOK Arl'ftL vK QbitC 1 IONS: [Describe your reasons for appealing; the decision or your objections to an initial
proff red permit in clear concise statements. You may attach additional information to this form to clarify where your reasons or
objections are addressed in the administrative record.)
ADDITIONAL INFORMATION: The appeal is limited to a review o1 Lne administrative record, ute Corps memorandum ror me
record of the appeal conference or mee[ing, and any suppleme.-.tz1 :ego.- ut:o.. tl,wt u.v Tc icrr otiicc. ni-- avivrrrlimca is ..ccaca to
ctariry ute..d-:.-.i.r...t:.e aepo,d. Neu
,icr inc uppcn..nt nor the Corps may add new information or analyses to the record.
11v,.e.er, yoti may provide additional information to clarify the location of information that is already in the administrative
record.
POINT OF CONTAC F FOR QUESTIONS OR INFORMATION:
If you have questions regarding this decision andior the
1r you omy nave quest.p,., ,C57-1"15 111c Wppc..l pivcc33 you .....y
appeal process you may contact:
also cv;-.ti.ct:
11.,,tr.ct 1, rlr,;uccr, w.letingtvn xcgulator yy Division
Mr. Jason Steele, Administrative Appeal Review Officer
.=Eln:l1µ;;0 L. 13AIC,7
CESAD-PDO
xu[z:gfi tcc ulN[o., r ivill V111c..
U.S. Army Corps of engineers, 50utl1 Atlantic Uivision
sssl rtc,;tNgc 1.-..0c u.-.;., Sz;3. 105
50 rorsytn 6t..eet, xvQ.a, iVivi i:)
w..Oc 1VvrtT1 Cup vli..0 z758 -i
Auzim :, Georgia 30303-8801
Phone: [phone]
RIGHT OF ENTRY: Your signature below grants the right of entry to Corps of engineers personnel, and any government
consuliants-to conduct investigations or the project site during me course or the ..rr��l 1,Fvee33. Y v!I ;.:n [)e prop:0cd w iJ sa..y
notice or -any site ';"ve.,t; ..t:o,., Ila ..:11 nu.c me opportunity to particieate in all site investi ations.
Date.
Telephone number:
Signature of appellant oragent.
ro, .-py—t.. P.. y..:t:Rt r..,jf,.....t re—d1s send this form to:
u;.tr;,t Engineer, Wilmington Regulatory Division, Attn: David Bailey, 69 Darlingion Avenue, Wilmington, North Curolina
28403
For Perndi denials, Proffered Pernri s and approveu rttriscrietionar uetertititratiotts sena rrrisjorm ro:
llivislon B, -.glace. Civm.mrnuc.- U.S. Army Ln.,nares Uiv-67., Svutli Atlantic; AM-..: Mr..lason Steele, Administrative Appeal
Unicer- C"FSAL-YUU. SO Fvr..,In St.cct. ma,7M. 191V11.7. All .uta; Gvvi6.w 3VJ9J-11801
1 -none: tu04)
1 rG w:n,.N,5ty.-. LJ,St.-=ct is committed to providing; the highest level of support to the public. To help us ensure we
continue to do so, please complete our customer Satisfaction Survey online at littp://reaulatol•N'.usaeesurve},.cont/.

Action ID N.,..ber: SAW -2014-01477 County: Rockin hast,
Permittee: Duke Energy Progress tattn;_Steve Cahuu.)
Project N..me: Dan Rivei Steam Station 36 inch vive clusu, t: f Eden. Rouldughani eountv I EFuKe
r.nerey, / industrial
Date Verification Issued: 04/29/2014
r. o;ect Manager: David Bailey
Upon completion of the activity authorized uy tnis permit and any mitigation required by the permit,
sign thi, ce, tification and return it to the following address:
US ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
attn: David E. Bailey
Raleigh Regulatory Field Office
3331 Heritage Trade Drive, Suite 105
Wako Forest, North Carolina 27587
Please note that your permitted activity is subject to a compliance inspection by a U. S. Army Corps of
Enginee. s . zpresentat6c. Failure tu comply with any terms or conditions of this authorization may
result in the t ort.a suspending; modifying u, ,evuking the authux;Lation and/or- issuing a Class I
administrative penalty; or initiating uthcr appropriate legal action.
I hereby ce, tify that the work authorized by the above referenced permit has been comt.let4d in
accurdance with the terms and ca,tdition of the said permit, and required mitigation was completed in
accordiince .. ith the permit conditions.
Si.,nature of Per.ittee
D_.tc

U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action Id. SAW -2015-01670 County: Rockingham U.S.G.S. Quad: NC -SOUTHEAST EDEN
INCOMPLETE APPLICATION
Property Owner: Duke Energy - Environmental Services Agent: AMEC Foster Wheeler
attn: Steve Cahoon attn: Joshua Bell, P.E.
Address: 410 South Wilmington Street Address: 2801 Yorkmont Road
Raleigh, NC, 27601 Charlotte, NC 28208
Location/Description of Proposed Activity: The project is located at the Duke Energy Dan River Steam Station
on the northwest side of the existing coal ash basins, approximately 0.2 mile southeast of the existing power
generation plant. Latitude 36.489899° N Longitude -79.718144° W. The proposed proiect includes the
permanent conversion of 0.407 acre of wetlands and 448 linear feet of stream to oven waters in order to close
a 48 inch corrugated metal pipe that flows under an existing coal ash basin.
Type of Permit Applied For (check one): IP ❑ NWP ® GP ❑
Applicable law: Section 404 of the Clean Water Act®; Section 10, Rivers and Harbor Act ❑
YOUR APPLICATION IS INCOMPLETE AND CANNOT BE PROCESSED UNTIL THE FOLLOWING
INFORMATION IS RECEIVED (CHECK ALL THAT APPLY):
❑ Your application form has not been completed and/or signed (see remarks)
❑ Under the conditions of the Nationwide Permit, mitigation is required for your project. The mitigation
proposal submitted with your application is insufficient. (see remarks.)
❑ Your application did not include a statement explaining how avoidance and minimization for losses of
waters of the U.S. were achieved on the project site. (see remarks)
® Your submitted project plans or maps were insufficient, too large, or not legible (see remarks).
❑ Your application did not include a delineation of affected special aquatic sites, including wetlands, vegetated
shallows, and riffle and pool complexes as required.
❑ You must submit a copy of your application to the NC Wildlife Resources Commission (WRC) since your
proposed work is in a designated trout water county (see remarks section below for the address of your WRC
representative)
® Other (see remarks below).
"Please reference your PCN dated 7/17/2015, received 7/20/2015. Also, if a discussion would be helpful in
providing guidance on the items requested below, please feel free to facilitate a teleconference for these
purposes.
C_9 U_F.11 t' 193
1. The PCN includes impacts to stream and wetlands related to inundation. However, the PCN does not
include information regarding the discharge of dredged or fill material in wetlands or other waters of the
US that triggers a CWA section 404 permit. Please add plans/design sheets and update section C of the
PCN that clearly describe the regulated activity.
2. Section B.3d. of the PCN ties the purpose of the proposed project to the ash pond clean-up. Note that this
office is currently reviewing a proposal at the Dan River Steam Station to expand a railroad line to dispose
of coal ash on site (SAW -2015-01381). We will review all projects related to coal ash clean up as part of
the same single and complete project. Based on NWP condition 28, and the definitions of "single and
complete project" and "independent utility" found in the NWP terms and conditions, please justify how this
proposed project is single and complete, and why it should not be considered cumulative with the coal ash
Page 1 of 2

removal/disposal activities on site and the previously authorized 36" culvert plug project (SAW -2014-
01477).
3. Please note that, assuming comment 2 is addressed above, items currently listed in PCN section C.2a and
C.2b would be considered permanent impacts rather than temporary, similar to the previously authorized
36" culvert plug project (SAW -2014-01477).
4. A waiver of the stream impact threshold is requested based on Regional Condition 3.1. However, the
NCDWQ Stream ID Forms included with the PCN do not pertain to the streams proposed for inundation
(based on the latitude and longitude on the forms) and document the features as being perennial instead of
intermittent. Please submit NCDWQ Stream ID Forms for the streams proposed for inundation to
document an intermittent flow regime.
5. A reduced mitigation ratio of 1:1 is proposed for both wetland and stream inundation impacts.
Compensatory mitigation proposals should be based on aquatic function. Further, as documented in the
Wilmington District Public Notice dated 4/21/2015, the Corps of Engineers Wilmington District will use
the NC Wetland Assessment Method (NCWAM) and the NC Stream Assessment Method (NCSAM) to
evaluate aquatic resource quality and functions for decisions regarding the amount and type of
compensatory mitigation.
<hllp://www.saw.usace.army.mil/Missions/Re,gulatoiyPermitProgram/PublicNotices/tabid/ 10057/Article/5
85625/implementation-of-nc-sam-and-nc-wam.aspx> Please submit NCWAM and NCSAM forms for the
wetland and stream areas proposed for inundation to justify your proposed reduced mitigation ratio of 1:1.
Although these forms are referenced in the PCN document, they were not included in the submittal
package. Please note that the USACE "Stream Quality Assessment Worksheet' has been replaced by the
NCSAM form for documenting aquatic resource quality and functions.
Please submit the above information within 30 days of receipt of this Notification (via e-mail is
fine) or we may consider your application withdrawn and close the file. Please call or email
(David E. Bailey2(ausace.army, mil) me if you have any questions.
Date: July 31, 2015
Corps Regulatory Official:
David E. Bailey
Telephone No: 919-554-4884, ext. 30
Corps Regulatory Field Office Address: USACE Raleigh Regulatory Field Office, 3331 Heritage Trade Drive,
Suite 105, Wake Forest, NC 27587
Copy furnished:
Sue Homewood, NCDENR-DWR, 450 W. Hanes Mill Road, Suite 300, Winston Salem, NC 27105
X

1 (EL.
)j` E �%" TEMPORARY IMPACTS
+
PROPOSED
RUNOFF STORAGE 25 -YEA _ � c , Wetland 1 12,420.9 20.9 SQ.FT.
IMPOUNDMENT
(D WA ER BY PUMPING WITHIN 72 _ — — _ — P \ Wetland 2 5,299.3 SQ.FT.
✓. .
Total 17,720.2 SQ.FT. `.
HOURS OF RAIN EVENT)
°---- -- .
Stream 1 219 FT
1
Stream 3 132 FT.
T °P +
V� Total 448 FT
_ EXISTING 48 -INCH CORRUGATED
_ _ t
METAL PIPE (CMP) CULVERT HAS
❑_ BEEN GROUTED. INFLOWS WILL
l ��� �„ �� - - _ _,_:_ _ -• Q �` BE PUMPED TO SECONDARY ASH
BASIN SHORT-TERM AND LATER
TO NEW STORMWATER OUTFALL
FOLLOWING CLEAN-UP.
I 1
TEMOPORARILY \ I ^ 1
IMPACTED STREAM 3
APPROX. 132 FT. I II', y �.� �:
1
1 r
g'
' : • k, , , ..� �' - • r KIS
TEMPORARILY11 \` \
IMPACTED WETLAND 2 > � �. � j .
(APPROX. 5,299.3 SQ.FT. +i r
IMPACTED OF 8,155 * - .00
v
SQ.FT. OF WETLANDS) i �� +�
–_ TEMPORARILY O I I \
* �+ IMPACTED STREAM 2 ° _
• J ,
- 1 t, (APPROX. 97 FT)
• –\
TEMPORARILY TEMPORARILY
`
IMPACTED STREAM 1 IMPACTED WETLAND 1
� X x (APPROX. 12,420.9 SQ.FT.) %
(APPROX. 219 FT.) +
LEGEND �>S �>
EXTENTS OF TEMPORARY _ _� �
� I -v
IMPOUNDMENT °�°� �" PROJECT BOUNDARY
EXISTING STREAM o� + \ (APPROX. 3.09 ACRES)
WETLANDS
PROJECT BOUNDARY
IMPACTED WETLAND
A
50 0 10 F1
CLIENT: DWN BY: PROJECT DATE:
JMe DAN RIVER STEAM STATION JULY 31, 2014
DUKE ENERGY - CAROLINAS CHKD BY 48 -INCH INLET AREA CLEAN-UP PROJECT NO:
•� DUD�Ey
ENERGY. AME01YORKonment&Infrastructure
2801 VORK LOTT ROAD, SUITE 100
CHARLOTTE, NC 28208
PHONE 71M-35NC ENG:
GEOLOGY.
8638
LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247
P:\6426 OW E"T-. inq\PnJx4\2014\6226140004 Don River R."--\S}o tw Pi—irg\WMk.&.PCN-Fiv-45WALPOR-6.d ft - F1p- 01 - W 1& 2015 4:34pn - JahANI
x11x
DATUM:
NAD, TITLE
ame0 PROJECTION:
UTM Zone 0
SCALE:
1" = 50'
PLAN VIEW
6226-14-0004
REV. NO.:
A
FIGURE N..
FIGURE 01

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
APPENDIX B
NC WAM and NC SAM DATA FORMS

Project Name Dan River Steam Station
Applicant/Owner Name Duke Energy
Wetland Type Hardwood Flat
Level III Ecoregion Piedmont
River Basin Roanoke
County Rockingham
i� Yes (+ No Precipitation within 48 hrs?
NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 5
Date of Evaluation 11 /2/2016
Wetland Site Name Wetland A
Assessor Name/Organization Cutler/Amec FW
Nearest Named Water Body Dan River
USGS 8 -Digit Catalogue Unit 03010103
NCDWR Region Winston-Salem
ude/Longitude (deci-degrees)
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and/or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following.
• Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
• Surface and sub -surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc.)
• Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
• Habitat/plant community alteration (examples: mowing, clear -cutting, exotics, etc.)
Is the assessment area intensively managed? (- Yes (- No
Regulatory Considerations - Were regulatory considerations evaluated? f" Yes ( No If Yes, check all that apply to the assessment area.
r_ Anadromous fish
F Federally protected species or State endangered or threatened species
i' NCDWR riparian buffer rule in effect
F Abuts a Primary Nursery Area (PNA)
F Publicly owned property
F N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
F Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HQW, ORW, or Trout
F esignated N'CNHP reference community
Abuts a 303(d) -listed stream or a tributary to a 303(d) -listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
r Blackwater
(o Brownwater
F Tidal (if tidal, check one of the following boxes) f— Lunar (— Wind " Both
Is the assessment area on a coastal island? r. Yes (e No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver?
Does the assessment area
overbank fl
during normal rainfall conditions?
(-• Yes t No
("" Yes (7 No
1. Ground Surface ConditionNegetation Condition — assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual). If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
GS VS
i+ A f: A Not severely altered
f" B B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub -Surface Storage Capacity and Duration — assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Suri) and sub -surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. A ditch s 1 foot deep is considered to affect surface water only,
while a ditch > 1 foot deep is expected to affect both surface and sub -surface water. Consider tidal flooding regime, if applicable.
Surf Sub
(T A C. A Water storage capacity and duration are not altered.
(" B B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
C (7 C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, fi#ling, excessive sedimentation, underground utility bines).
3. Water Storage/Surface Relief— assessment area/wetland type condition metric (skip for all marshes)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a. t A t ` A Majority of wetland with depressions able to pond water > 1 foot deep
t B (7 B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
C C C Majority of wetland with depressions able to pond water 3 to 6 inches deep
C D D Depressions able to pond water < 3 inches deep
3b. C- A Evidence that maximum depth of inundation is greater than 2 feet
t- B Evidence that maximum depth of inundation is between 1 and 2 feet
(*' C Evidence that maximum depth of inundation is less than 1 foot

4. Soil Texture/Structure — assessment area condition metric (skip for all marshes)
Check a box from each of the three soil property groups below. Dig soil profile in the do6hinant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a. rA Sandy soil
r B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
r",` C Loamy or clayey soils not exhibiting redoximorphic features
r D Loamy or clayey gleyed soil
r, E Histosol or histic epipedon
4b. r A Soil ribbon < 1 inch
rF B Soil ribbon a 1 inch
4c. rt A No peal or muck presence
r"' B A peat or muck presence
5. Discharge into Wetland—opportunity metric
Check a box In each column. Consider surface pollutants or discharges (Surf) and sub -surface pollutants or discharges (Sub).
Examples of sub -surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Sud Sub
r A rt A Little or no evidence of pollutants or discharges entering the assessment area
r- B r" B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
r C r, C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use — opportunity metric (skip for non -riparian wetlands)
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (5M), and within 2 miles and within the watershed draining to the assessment area (2M). Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
r A r A r A >_ 10% impervious surfaces
r B r B r B Confined animal operations (or other local, concentrated source of pollutants)
r C r c r C z 20% coverage of pasture
r D r D r D z 20% coverage of agricultural land (regularly plowed land)
r E r E r E 2 20% coverage of maintained grass/herb
r F r F r F a 20% coverage of clear -wt land
r G r G r G Little or no opportunity to improve water quality. Lack of opportunity may result from little or no disturbance in
the watershed or hydrologic alterations that prevent dainage and/or overbank Flow from affectio the
assessment area.
7. Wetland Acting as Vegetated Buffer —assessment arealwetland complex condition metric (skip for non -riparian wetlands)
7a. Is assessment area within 50 feet of a tributary or other open water?
,' Yes r: No If Yes, continue to 7b. If No, skip to Metric 8.
71b. How much of the first 50 feet from the bank is weltand? (Wetland buffer need only be present on one side of the water body. Make
buffer judgment based on the average width of wetland. Record a note if a portion of the buffer has been removed or disturbed.)
r, A a 50 feet
r'- B From 30 to < 50 feet
r"' C From 15 to < 30 feet
r- D From 5 to < 15 feet
r". E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels/bmids for a total width.
C s 15 -feet wide r' > 15 -feet wide C. Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
r Yes r No
7e. Is tributary or other open water sheltered or exposed?
i" Sheltered — adjacent open water with width < 2500 feet and no regular boat traffic.
r, Exposed — adjacent open water with width z 2500 feet or regular boat traffic.
8. Wetland Width at the Assessment Area — wetland typelwetiand complex condition metric (evaluate WT for all marshes
and Estuarine Woody Wetland only; evaluate WC for Bottomland Hardwood Forest, Headwater Forest, and Riverine Swamp
Forest only)
Check a box In each column. Select the average width for the wetland type at the assessment area (WT) and the wetland complex at the
assessment area (WC). See User Manual for WT and WC boundaries.
WT WC
r"`C A CA z 100 feel
r B (' B From 80 to < 100 feet
r° C f- C From 50 to < 80 feet
r": D {' D From 40 to < 50 feet
C E (', E From 30 to < 40 feet
r.,F r`F From 15 to<30 feet
r'?.G r..G From 5to<15 feet
r"}H r <5feet

9. Inundation Duration — assessment area condition metric (skip for non -riparian wetlands)
Answer for assessment area dominant landform.
t: A Evidence of short -duration inundation (< 7 consecutive days)
(". B Evidence of saturation, without evidence of inundation
r, C Evidence of long -duration inundation or very long -duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition —assessment area condition metric (skip for non -riparian wetlands and all marshes)
Consider recent deposition only (no plant growth since deposition).
r A Sediment deposition is not excessive, but at approximately natural levels.
(7, B Sediment deposition is excessive, but not overwhelming the wetland.
r C Sediment deposition is excessive and is overwhelming the wetland.
11. Wetland Size — wetland typelwetland complex condition metric
Check a box in each column. Involves a GIS effort with field adjustment. This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (if applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear-cut, select "K" for the FW column.
WT WC FW (if applicable)
r. A ry A r A 2 500 acres
r' B r, B rrl B From 100 to < 500 acres
r c n C r C From 50 to < 100 acres
(! D C' D r D From 25 to < 50 acres
r E r E r1 E From 10 to < 25 acres
r F r F t" F From 5 to < 10 acres
r< G r G r G From 1 to < 5 acres
r••'• H r H r H From 0.5 to < 1 acre
r: I r I (: I From 0.1 to < 0.5 acre
r'J CJ r From 0.01 to<0.1 acre
r'•• K G K (— K < 0.01 acre or assessment area is clear-cut
12. Wetiand Intactness — wetland type condition metric (evaluate for Pocosins only)
C, A Pocosin is the full extent (2 90%) of its natural landscape size.
r B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas — landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and/or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water> 300 feet wide.
Well Loosely
(` A r^. A s 500 acres
r B (', B From 100 to < 500 acres
r C r' C From 50 to < 100 acres
(5 D r;. D From 10 to < 50 acres
r••• E (:} E < 10 acres
(- F r" F Wetland type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only.
r Yes ri No Wetland type has a surface hydrology connection to open waters/stream or tidal wetlands.
14. Edge Effect— wetland type condition metric (skip for all marshes and Estuarine Woody Wetland)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non -forested areas >_ 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts. Consider
the eight main points of the compass. Artificial edge occurs within 150 feet in how many directiions? If the assessment area is clear-cut,
select option "C."
r A 0
("` B 1 to 4
CC 5to6
15. Vegetative Composition — assessment area condition metric (skip for all marshes and Pine Flat)
(.`.- A Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse vathin the assessment area.
r B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata.
rs C Vegetation severely altered from reference in composition, or expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species), or exotic species are dominant in
at least one stratum.
16. Vegetative Diversity— assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
r A Vegetation diversity is high and is composed primarily of native species (<10% cover of exotics).
r B Vegetation diversity is low or has > 10% to 50% cover of exotics.
C C Vegetation is dominated by exotic species (>50% cover of exotics).

17. Vegetative Structure — assessment arealwetland type condition metric
17a. Is vegetation present?
f: Yes (, No If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 17c for non -marsh wetlands.
r A 2 25% coverage of vegetation
(5 B < 25% coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace
above the assessment area (AA) and the wetland type (WT) separately.
t 97 B
AA
WT
0 C, C
C.
C- A
' A
Canopy closed, or neatly closed, with natural gaps associated with natural processes
Dense herb layer
B
C• B
Canopy present, but opened more than natural gaps
O
R C
r C
Canopy sparse or absent
of„
, A
{_ A
Dense mid-story/sapling layer
0
M
r, B
T� B
Moderate density mid-story/sapling layer
t:- C
Q C
Mid-story/sapling layer sparse or absent
a (}A(7�A
Dense shrub layer
t 97 B
r!, B
Moderate density shrub layer
0 C, C
r C
Shrub layer sparse or absent
n G -A
r,A
Dense herb layer
(` B
C•.. B
Moderate density herb layer
(_- C
(7 C
Herb layer sparse or absent
18. Snags —wetland type condition metric (skip for all marshes)
A Large snags (more than one) are visible (> 12 -inches DBH, or large relative to species present and landscape stability).
rk B Not
19. Diameter Class Distribution —wetland type condition metric (skip for all marshes)
O A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
('! B Majority of canopy trees have stems belween 6 and 12 inches DBH, few are > 12 -inch DBH.
(.',`- C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris —wetiand type condition metric (skip for all marshes)
Include both natural debris and man -placed natural debris.
r A Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
r B Not A
21. Vegetation/Open Water Dispersion —wetland typelopen water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water.
('A ("_B ("C (rD
{ j
22. Hydrologic Connectivity— assessment area condition metric (evaluate for riparian wetlands and SaltlBrackish Marsh only)
Examples of activities that may severely alter hydrologic connectivity include intensive ditching, fill, sedimentation, channelization,
diversion, man-made berms, beaver dams, and stream incision. Documentation required if evaluated as B, C, or D.
(i A Overbank and overland flow are not severely altered in the assessment area.
r B Overbank flow is severely altered in the assessment area.
r C Overland flow is severely altered in the assessment area.
r D Both overbank and overland flow are severely altered in the assessment area.

NC WAM Wetland Rating Sheet
Accompanies User Manual
Version 5.0
Wetland Site Name Wetland A
Date
11/2/2016
Wetland Type Hardwood Fiat
Assessor Name/Organization
CutlerlAm€;c FW
Notes on Field Assessment Form (YIN)
NO
Presence of regulatory considerations (YIN)
NO
Wetland is intensively managed (YIN)
NO
Assessment area is located within 50 feet of a natural tributary or other open water (YIN)
NO
Assessment area is substantially altered by beaver (YIN)
NO
Assessment area experiences overbank flooding during normal rainfall conditions (YIN)
NO
Assessment area is on a coastal island (YIN)
NO
Sub-function Rating Summary
Function Sub-function
Metrics
Rating
Hydrology Surface Storage and Retentions
Condition
MEDIUM
Sub-Surface Storage and Retention
Condition
HIGH
Water Quality Pathogen Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (Y/N)
NA
Particulate Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Soluble Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Physical Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (Y/N)
NA
Pollution Change
Condition
MEDIUM
Condition/Opportunity
MEDIUM
Opportunity Presence? (YIN)
NO
Habitat Physical Structure
Condition
LOW
Landscape Patch Structure
Condition
LOW
Vegetation Composition
Condition
HIGH
Function Rating Summary
Function Metrics/Notes
Rating
Hydrology Condition
HIGH
Water Quality Condition
MEDIUM
Condition/Opportunity
MEDIUM
Opportunity Presence? (YIN)
NO
Habitat Condition
LOW
Overall Wetland Rating MEDIUM

NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 5
Project Name Dan River Steam Station Date of Evaluation 1112/2016
ApplicanUOwner Name Duke Energy Wetland Site Name Wetland B
Wetland Type Headwater Forest Assessor Name/Organization Witherspoon/Amec FW
Level III Ecoregion Piedmont Nearest Named Water Body Dan River
River Basin Roanoke USGS 8 -Digit Catalogue Unit 03010103
County Rockingham NCDWR Region Winston-Salem
Yes f* No Precipitation within 48 hrs? Latitude/Longitude (deci-degrees)
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and/or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following.
• Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
• Surface and sub -surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc.)
• Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
• Habitat/plant community alteration (examples: mowing, clear -cutting, exotics, etc.)
Is the assessment area intensively managed? (— Yes i'+ No
Regulatory Considerations - Were regulatory considerations evaluated?" Yes (e -No If Yes, check all that apply to the assessment area.
f Anadromous fish
r Federally protected species or State endangered or threatened species
r NCDWR riparian buffer rule in effect
F Abuts a Primary Nursery Area (PNA)
i Publicly owned property
N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
7 Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HOW, ORW, or Trout
7 Designated NCNHP reference community
i- Abuts a 303(d) -listed stream or a tributary to a 303(4) -listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
r, Blackwater
Brownwater
€— Tidal (if tidal, check one of the following boxes) r Lunar r Wind r Both
Is the assessment area on a coastal island? t— Yes f: No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver?
Does the assessment area
overbank flood
normal rainfall conditions?
Yes fo No
Yes r No
1. Ground Surface ConditionNegetation Condition — assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual). If a reference is not applicable,
then rate the assessment area based an evidence of an effect.
GS VS
r A (T A Not severely altered
r B r B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub -Surface Storage Capacity and Duration — assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Surf) and sub -surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. A ditch 5 1 foot deep is considered to affect surface water only,
while a ditch > 1 foot deep is expected to affect both surface and sub -surface water. Consider tidal flooding regime, if applicable.
Surf Sub
(o- A ( A Water storage capacity and duration are not altered.
r B r B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
r C r C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water Storage/Surface Relief — assessment area/wetland type condition metric (skip for all marshes)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a, r A r A Majority of wetland with depressions able to pond water > 1 foot deep
r B ` B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
" C" C Majority of wetland with depressions able to pond water 3 to 6 inches deep
(T D Co D Depressions able to pond water < 3 inches deep
3b. (— A Evidence that maximum depth of inundation is greater than 2 feet
r B Evidence that maximum depth of inundation is between 1 and 2 feet
to C Evidence that maximum depth of inundation is less than 1 foot

Soil Texture/Structure - assessment area condition metric (skip for all marshes)
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a. rA Sandy soil
r B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
r C Loamy or clayey soils not exhibiting redoximorphic features
[' D Loamy or clayey gleyed soil
r E Histosol or histic epipedon
4b. r A Soil ribbon < 1 inch
f7: B Soil ribbon >- 1 inch
4c. f7 -A No peat or muck presence
r B A peat or muck presence
5. Discharge into Wetland -opportunity metric
Check a box in each column. Consider surface pollutants or discharges (Surf) and sub -surface pollutants or discharges (Sub).
Examples of sub -surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Surf Sub
r, A [.': A Little or no evidence of pollutants or discharges entering the assessment area
r? B r B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
r C r C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use - opportunity metric (skip for non -riparian wetlands)
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (5M), and within 2 miles and within the watershed draining to the assessment area (2M). Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
f7 17 A re A > 10% impervious surfaces
f-•. B r B r B Confined animal operations (or other local, concentrated source of pollutants)
r C C C r C a 20% coverage of pasture
F D r D G D >_ 20% coverage of agricultural land (regularly plowed land)
F E C.-•••. E r E a 20% coverage of maintained grass/herb
I-: F r F 17- F a 20% coverage of clear-cut land
r G r G i-•• G Little or no opportunity to improve water quality. Lack of opportunity may result from little or no disturbance in
the watershed or hydrologic alterations that prevent dainage and/or overbank flow from affectio the
assessment area.
7. Wetland Acting as Vegetated Buffer -assessment arealwetland complex condition metric (skip for non -riparian wetlands)
7a. Is assessment area within 50 feet of a tributary or other open water?
r. Yes r: No If Yes, continue to 7b. If No, skip to Metric 8.
7b. How much of the first 50 feet from the bank is weltand? (Wetland buffer need only be present on one side of the water body. Make
buffer judgment based on the average width of wetland. Record a note if a portion of the buffer has been removed or disturbed.)
r A t 50 feet
r B From 30 to < 50 feet
r C From 15 to < 30 feet
D From 5 to < 15 feet
E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels/braids for a total width.
(7: 5 15 -feet wide r > 15 -feel wide r..- Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
r.': Yes r No
7e. Is tributary or other open water sheltered or exposed?
f7; Sheltered - adjacent open water with width < 2500 feet and no regular boat traffic.
r Exposed - adjacent open water with width >_ 2500 feet or regular boat traffic.
8. Wetland Width at the Assessment Area - wetland typelwetland complex condition metric (evaluate WT for all marshes
and Estuarine Woody Wetland only; evaluate WC for Bottomland Hardwood Forest, Headwater Forest, and Riverine Swamp
Forest only)
Check a box In each column. Select the average width for the wetland type at the assessment area (WT) and the wetland complex at the
assessment area (WC). See User Manual for WT and WC boundaries.
WT WC
r A r A z 100 feet
r B r. B From 80 to < 100 feet
r C r C From 50 to < 80 feet
r'. D r D From 40 to < 50 feet
r E r E From 30 to < 40 feet
r F (" F From 15 to < 30 feet
r G r,, G From 5 to < 15 feet
r r.H <5feet

9. Inundation Duration — assessment area condition metric (skip for non -riparian wetlands)
Answer for assessment area dominant landform.
r, A Evidence of short -duration inundation (< 7 consecutive days)
r B Evidence of saturation, without evidence of inundation
C C Evidence of long -duration inundation or very long -duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition —assessment area condition metric (skip for non -riparian wetlands and all marshes)
Consider recent deposition only (no plant growth since deposition).
ro. A Sediment deposition is not excessive, but at approximately natural levels.
[". B Sediment deposition is excessive, but not overwhelming the wetland.
C Sediment deposition is excessive and is overwhelming the wetland.
11. Wetland Size — wetland typelwetiand complex condition metric
Checks box in each column. Involves a GIS effort with field adjustment. This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (if applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear-cut, select "K" for the FW column.
WT WC FW (if applicable)
(7A [',: A CA 2 500 acres
(" B ri B r, B From 100 to < 500 acres
r C r C r) C From 50 to < 100 acres
r1 D r D (`� D From 25 to < 50 acres
("� E {'} E r E From 10 to < 25 acres
r, F r F C F From 5 to < 10 acres
r G r G r G From 1 to < 5 acres
r H r H t— H From 0.5 to < 1 acre
q 1 (.71 C I From 0.1 to < 0.5 acre
r J r J r J From 0.01 to < 0.1 acre
r K r K r K < 0.01 acre or assessment area is clear-cut
12. Wetland Intactness —wetland type condition metric (evaluate for Pocosins only)
r A Pocosin is the full extent (a 90%) of its natural landscape size.
(": B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas — landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and/or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water> 300 feet wide.
Well Loosely
r A r^ A 2 500 acres
r B ( B From 100 to < 500 acres
(" C C From 50 to < 100 acres
r: D r, D From 10 to < 50 acres
r E r, E < 10 acres
r" F T: F Well type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only.
r Yes r No Wetland type has a surface hydrology connection to open waters/stream or tidal wetlands.
14. Edge Effect —wetland type condition metric (skip for all marshes and Estuarine Woody Wetland)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non -forested areas 2 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts. Consider
the eight main points of the compass. Artificial edge occurs within 150 feet in how many direction? If the assessment area is clear-cut,
select option "C."
(" A 0
(^B 1to4
(; C 5to8
15. Vegetative Composition — assessment area condition metric (skip for all marshes and Pine Flat)
r A Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
(: B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata.
r C Vegetation severely altered from reference in composition, or expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species), or exotic species are dominant in
at least one stratum.
16. Vegetative Diversity — assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
(7 A Vegetation diversity is high and is composed primarily of native species (<l 0% cover of exotics).
O B Vegetation diversity is low or has > 10% to 50% cover of exotics.
r C Vegetation is dominated by exotic species (>50% cover of exotics).

17. Vegetative Structure - assessment arealwetland type condition metric
17a. Is vegetation present?
r Yes r No If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 17c for non -marsh wetlands.
r A a 25% coverage of vegetation
r <25% coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace
above the assessment area (AA) and the wetland type (WT) separately.
AA
WT
cr
A
[}A
Canopy closed, or nearly closed, with natural gaps associated with natural processes
UC't
B
{': B
Canopy present, but opened more than natural gaps
ro, C
(7, C
Canopy sparse or absent
z
o
;"`,.A
("•A
Dense mid-story/sapling layer
0
v
C B
[:: B
Moderate density mid-story/sapling layer
(.; C
(^, C
Mid-story/sapling layer sparse or absent
r A r, A Dense shrub layer
t (` B ( j B Moderate density shrub layer
w (! C r C Shrub layer sparse or absent
r7 A [", A Dense herb layer
r,,, B rZ B Moderate density herb layer
r C r C Herb layer sparse or absent
18. Snags - wetland type condition metric (skip for all marshes)
r A Large snags (more than one) are visible (> 12 -inches DBH, or large relative to species present and landscape stability).
ro B Not A
19. Diameter Class Distribution - wetland type condition metric (skip for all marshes)
r A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
B Majority of canopy trees have stems between 6 and 12 inches DBH, few are > 12 -inch DBH.
r:, C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris - wetland type condition metric (skip for all marshes)
Include both natural debris and man -placed natural debris.
r A Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
ft B Not A
21. Vegetation/Open Water Dispersion - wetland typolopen water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water.
iSY,r
22. Hydrologic Connectivity- assessment area condition metric (evaluate for riparian wetlands and Salt/Brackish Marsh only)
Examples of activities that may severely alter hydrologic connectivity include intensive ditching, fill, sedimentation, channelization,
diversion, man-made berms, beaver dams, and stream incision. Documentation required if evaluated as B, C, or D.
r: A Overbank and overland flow are not severely altered in the assessment area.
r B Overbank flow is severely altered in the assessment area.
17 C Overland flow is severely altered in the assessment area.
r D Both overbank and overland flow are severely altered in the assessment area.

NC WAM Wetland Rating Sheet
Accompanies User Manual Version 5.0
Wetland Site Name Wetland B
Wetland Type Headwater Forest
Date
Assessor Name/Organization
Notes on Field Assessment Form (YIN)
Presence of regulatory considerations (YIN)
Wetland is intensively managed (YIN)
Assessment area is located within 50 feet of a natural tributary or other open water (YIN)
Assessment area is substantially altered by beaver (YIN)
Assessment area experiences overbank flooding during normal rainfall conditions (YIN)
Assessment area is on a coasts[ island (YIN)
Sub -function Rating Summary
11/2/2016
Witherspoon/Ames !=W
NO
NO
NO
YES
NO
NO
NO
Function Sub -function
Metrics
Rating
Hydrology Surface Storage and Retention
Condition
LOW
Sub -Surface Storage and Retention
Condition
MEDIUM
Water Quality Pathogen Change
Condition
HIGH
Opportunity Presence? (YIN) NA
Habitat Physical Structure Condition LOW
Landscape Patch Structure Condition LOW
Vegetation Composition Condition MEDIUM
Function Rating Summary
Function Metrics/Notes Rating
Hydrology Condition LOW
Water Quality Condition HIGH
Habitat
Condition/Opportunity
Opportunity Presence? (YIN)
Condition
Overall Wetland Rating LOW
HIGH
YES
Inw
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Particulate Change
Condition
LOW
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Soluble Change
Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Physical Change
Condition
MEDIUM
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Pollution Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (YIN) NA
Habitat Physical Structure Condition LOW
Landscape Patch Structure Condition LOW
Vegetation Composition Condition MEDIUM
Function Rating Summary
Function Metrics/Notes Rating
Hydrology Condition LOW
Water Quality Condition HIGH
Habitat
Condition/Opportunity
Opportunity Presence? (YIN)
Condition
Overall Wetland Rating LOW
HIGH
YES
Inw

NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 5
Project Name Dan River Steam Station Date of Evaluation 11/212016
Applicant/Owner Name Duke Energy Wetland Site Name Wetlands C, E, and F
Wetland Type Headwater Forest Assessor NamelOrganization Witherspoon/Amec FW
Level Iff Ecoregion Piedmont Nearest Named Water Body Dan River
River Basin Roanoke USGS 8 -Digit Catalogue Unit 03010103
County Rockingham NCDWR Region Winston-Salem
(7Yes ( No Precipitation within 48 hrs? Latitude/Longitude (deci-degrees)
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and/or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following.
• Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
• Surface and sub -surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc.)
• Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
• Habitatiplant community alteration (examples: mowing, clear -cutting, exotics, etc.)
Is the assessment area intensively managed? (- Yes (: No
Regulatory Considerations -Were regulatory considerations evaluated? Yes (: No If Yes, check all that apply to the assessment area
f� Anadromous fish
f- Federally protected species or State endangered or threatened species
[ NCDWR riparian buffer rule in effect
F Abuts a Primary Nursery Area (PNA)
F Publicly owned property
F N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
F Abuts a stream with a NCDWO classification of SA or supplemental classifications of HQW, ORW, or Trout
17- Designated NCNHP reference community
r Abuts a 303(d) -listed stream or a tributary to a 303(d) -listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
Blackwater
(: Brownwater
F Tidal (if tidal, check one of the following boxes) (" Lunar t- Wind (' Both
Is the assessment area on a coastal island? f7 Yes tT. No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver?
Does the assessment area experience overbank floodin
normal rainfall conditions?
r Yes (: No
Yes % No
1. Ground Surface Condition/Vegetation Condition — assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual). If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
G5 VS
ro A (+ A Not severely altered
(—B (— B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechan€cal disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub -Surface Storage Capacity and Duration — assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Surf) and sub -surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. A ditch s 1 foot deep is considered to affect surface water only,
while a ditch > 1 foot deep is expected to affect both surface and sub -surface water. Consider tidal Flooding regime, if applicable.
Surf Sub
(* A (: A Water storage capacity and duration are not altered.
r B ( B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
f C r C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, Flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water Storage/Surface Relief —assessment arealwetland type condition metric (skip for all marshes)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a. A r A Majority of wetland with depressions able to pond water > 1 foot deep
(` B r B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
r C r C Majority of wetland with depressions able to pond water 3 to 6 inches deep
(* D C+ D Depressions able to pond water < 3 inches deep
3b. r A Evidence that maximum depth of inundation is greater than 2 feet
B Evidence that maximum depth of inundation is between 1 and 2 feet
(: C Evidence that maximum depth of inundation is less than 1 foot

4. Soil Texture/Structure - assessment area condition metric (skip for all marshes)
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a. r Sandy soil
B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
r••• C Loamy or clayey soils not exhibiting redoximorphic features
D Loamy or clayey gleyed soil
C E Histosol or histic epipedon
4b. r A Soil ribbon < 1 inch
C B Soil ribbon a 1 inch
4c. (e A No peat or muck presence
r± B A peat or muck presence
5. Discharge Into Wetland - opportunity metric
Check a box in each column. Consider surface pollutants or discharges (Surf) and sub -surface pollutants or discharges (Sub).
Examples of sub -surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Surf Sub
(e'.: A (:,: A Little or no evidence of pollutants or discharges entering the assessment area
(°. B (`: B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
(" C C? C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use - opportunity metric (skip for non -riparian wetlands)
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (510), and within 2 miles and within the watershed draining to the assessment area (2M). Effective riparian buffers
are considered to be 50 feel wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
17 A r A (+'. A z 10% impervious surfaces
r- B r- B r- B Confined animal operations (or other local, concentrated source of pollutants)
C C r- C r C Z 20% coverage of pasture
G D F D f- D a 20% coverage of agricultural land (regularly plowed land)
r- E f- E i- E >_ 20% coverage of maintained grass/herb
r- F r-••, F i- F z 20% coverage of clear-cut land
r- G r-•••. G r- G Little or no opportunity to improve water quality. Lack of opportunity may result from little or no disturbance in
the watershed or hydrologic alterations that prevent dainage and/or overbank flow from affectio the
assessment area.
7. Wetland Acting as Vegetated Buffer- assessment area/wetland complex condition metric (skip for non -riparian wetlands)
7a. Is assessment area within 50 feet of a tributary or other open water?
6 Yes (' No If Yes, continue to 71b. If No, skip to Metric 8.
7b. How much of the first 50 feet from the bank is weltand? (Wetland buffer need only be present on one side of the water body. Make
buffer judgment based on the average width of wetland. Record a note if a portion of the buffer has been removed or disturbed.)
A a 50 feet
('} B From 30 to < 50 feel
['- C From 15 to < 30 feet
{.±. D From 5 to < 15 feet
E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels/braids for a total Width.
(td 5 15 -feet Wide (7, > 15 -feet wide r Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
(? Yes r, No
7e. Is tributary or other open water sheltered or exposed?
r; Sheltered - adjacent open water with width < 2500 feet and no regular boat traffic.
(", Exposed - adjacent open water with width Z 2500 feet or regular boat traffic.
8. Wetland Width at the Assessment Area -wetland type/wetland complex condition metric (evaluate WT for all marshes
and Estuarine Woody Wetland only; evaluate WC for Bottomland Hardwood Forest, Headwater Forest, and Riverine Swamp
Forest only)
Check a box in each column. Select the average width for the wetland type at the assessment area (WT) and the wetland complex at the
assessment area (WC). See User Manual for WT and WC boundaries.
WT WC
r A r` A 2 100 feet
(7 B ry B From 80 to < 100 feet
ri C C From 50 to < 80 feet
r D r,. D From 40 to < 50 feet
r} E r: E From 30 to < 40 feet
(' F r F From 15 to < 30 feet
r•••• G r;. G From 5 to < 15 feet
rJ H ri H < 5 feet

9. Inundation Duration - assessment area condition metric (skip for non -riparian wetlands)
Answer for assessment area dominant landform.
O A Evidence of short -duration inundation (< 7 consecutive days)
r,, B Evidence of saturation, without evidence of inundation
O C Evidence of long -duration inundation or very long -duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition - assessment area condition metric (skip for non -riparian wetlands and all marshes)
Consider recent deposition only (no plant growth since deposition).
[",. A Sediment deposition is not excessive, but at approximately natural levels.
O B Sediment deposition is excessive, but not overwhelming the wetland.
O C Sediment deposition is excessive and is overwhelming the wetland.
11. Wetland Size - wetland type/wetland complex condition metric
Check a box in each column. Involves a GIS effort with field adjustment. This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (if applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear�cut, select °K" for the FW column.
WT WC FW (if applicable)
{'} A OA CIA a 500 acres
O B O B O B From 100 to < 500 acres
O C O C O C From 50 to < 100 acres
O D O D (`. D From 25 to < 50 acres
O E O E O E From 10 to < 25 acres
r F r F O F From 5 to < 10 acres -
(`, G O G O G From 1 to < 5 acres
(^ H O H O H From 0.5 to < 1 acre
(.~': I (:; I (: I From 0.1 to < 0.5 acre
O J C. J O, J From 0.01 to < 0.1 acre
O K O K O K < 0.01 acre or assessment area is clear-cut
12. Wetland Intactness - wetland type condition metric (evaluate for Pocosins only)
O A Pocosin is the full extent (>- 90%) of its natural landscape size.
O B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas - landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and/or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water> 300 feet wide.
Well Loosely
[" A (') A a 500 acres
(! B (^ B From 100 to < 500 acres
r C O C From 50 to < 100 acres
O D O. D From 10 to < 50 acres
O E (. E < 10 acres
O F O F Wetland type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only.
O Yes O No Wetland type has a surface hydrology connection to open waters/stream or tidal wetlands.
14. Edge Effect - wetland type condition metric (skip for all marshes and Estuarine Woody Wetland)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non -forested areas 2 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts. Consider
the eight main points of the compass. Artificial edge occurs within 150 feet in how many directiions? If the assessment area is clear-cut,
select option "C."
OA 0
rB 1to4
q 5to8
15. Vegetative Composition - assessment area condition metric (skip for all marshes and Pine Flat)
r? A Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
O B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata.
O C Vegetation severely altered from reference in composition, or expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species), or exotic species are dominant in
at least one stratum.
16. Vegetative Diversity - assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
O A Vegetation diversity is high and is composed primarily of native species (<10% cover of exotics).
r B Vegetation diversity is low or has > 10% to 50% cover of exotics.
O C Vegetation is dominated by exotic species (>50% cover of exotics).

17. Vegetative Structure — assessment arealwetland type condition metric
17a. Is vegetation present?
r: Yes r No If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 170 for non -marsh wetlands.
r A
>_ 25% coverage of vegetation
r_ B
< 25% coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace above the assessment area (AA) and the wetland type (WT) separately.
AA
WT
cr
A
r, A
Canopy closed, or nearly closed, with natural gaps associated with natural processes
r B
r B
Canopy present, but opened more than natural gaps
%_ C
(- C
Canopy sparse or absent
r
{` A
{? A
Dense mid-story/sapling layer
ro
{" B
r B
Moderate density mid-story/sapling layer
rt C
(S C
Mid-story/sapling layer sparse or absent
[` A
(` A
Dense shrub layer
B
(:. B
Moderate density shrub layer
rf C
O C
Shrub layer sparse or absent
(?.A
f,,A
Dense herb layer
tU
r. B
r. B
Moderate density herb layer
r C
r C
Herb layer sparse or absent
18. Snags — wetland type condition metric (skip for all marshes)
r A Large snags (more than one) are visible (> 12 -inches DBH, or large relative to species present and landscape stability).
(7 B Not A
19. Diameter Class Distribution —wetland type condition metric (skip for all marshes)
r A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
B Majority of canopy trees have stems between 6 and 12 inches DBH, few are> 12 -inch DBH.
rT C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris —wetland type condition metric (skip for all marshes)
Include both natural debris and man -placed natural debris.
r A Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
[; B Not A
21. Vegetatlon/Open Water Dispersion —wetland typelopen water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water.
A r,,B r i`,D
a
t' "'D
nv6
22. Hydrologic Connectivity— assessment area condition metric (evaluate for riparian wetlands and Salt/Brackish Marsh only)
Examples of activities that may severely alter hydrologic connectivity include intensive ditching, fill, sedimentation, channelization,
diversion, man-made berms, beaver dams, and stream incision. Documentation required if evaluated as B. C, or D.
r. A Overbank and overland flow are not severely altered in the assessment area.
B Overbank flow is severely altered in the assessment area.
(") C Overland flow is severely altered in the assessment area.
(?: D Both overbank and overland flow are severely altered in the assessment area.

NC WAM Wetland Rating Sheet
Accompanies User Manual Version 5.0
Wetland Site Name Wetlands C, E, and F
Wetland Type Headwater Forest
Date 11/212016
Assessor Name/Organization Witherspoon/Amec FW
Notes on Field Assessment Form (YIN)
Condition/Opportunity
NO
Presence of regulatory considerations (YIN)
Opportunity Presence? (YIN)
NO
Wetland is intensively managed (Y/N)
Condition
NO
Assessment area is located within 50 feet of a natural tributary or other open water (YIN)
YES
Assessment area is substantially altered by beaver (Y/N)
NO
Assessment area experiences overbank flooding during normal rainfall conditions (YIN)
NO
Assessment area is on a coastal island (YIN)
NA
NO
Sub -function Rating Summary
NA
Function Sub -function
Metrics
Rating
Hydrology Surface Storage and Retention
Condition
LOW
Sub -Surface Storage and Retention
Condition
MEDIUM
Water Quality Pathogen Change
Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (Y/N)
YES
Particulate Change
Condition
LOW
Condition/Opportunity
NA
Opportunity Presence? (Y/N)
NA
Soluble Change
Condition
HIGH
Function Rating Summary
Function
Condition/Opportunity
HIGH
Hydrology
Opportunity Presence? (YIN)
YES
Physical Change
Condition
MEDIUM
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Pollution Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Habitat Physical Structure
Condition
LOW
Landscape Patch Structure
Condition
LOW
Vegetation Composition
Condition
HIGH
Function Rating Summary
Function
Metrics/Notes
Rating
Hydrology
Condition
LOW
Water Quality
Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (Y/N)
YES
Habitat
Condition
LOW
Overall Wetland Rating LOW

NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 5
Project Name Dan River Steam Station Date of Evaluation 11/2/2016
Applicant/Owner Name Duke Energy Wetland Site Name Wetland D
Wetland Type Headwater Forest Assessor Name/Organization Witherspoon/Amoc FW
Level III Ecoregion Piedmont Nearest Named Water Body Dan River
River Basin Roanoke USGS 8 -Digit Catalogue Unit 03010103
County Rockingham NCDWR Region Winston-Salem
€ ` Yes f* No Precipitation within 48 hrs? Latitude/Longitude (deci-degrees)
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and/or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following.
• Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
• Surface and sub -surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc.)
• Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
• Habitat/plant community alteration (examples: mowing, clear -cutting, exotics, etc.)
Is the assessment area intensively managed? f- Yes f+ No
Regulatory Considerations - Were regulatory considerations evaluated? r Yes f; No If Yes, check all that apply to the assessment area.
r Anadromous fish
F Federally protected species or State endangered or threatened species
NCDWR riparian buffer rule in effect
f Abuts a Primary Nursery Area (PNA)
Publicly owned property
F N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
F Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HQW, ORW, or Trout
f Designated NCNHP reference community
7 Abuts a 303(d) -listed stream or a tributary to a 303(d) -listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
r Blackwater
Brownwater
1— Tidal (if tidal, check one of the following boxes) f- Lunar r Wind i Both
Is the assessment area on a coastal island? t—. Yes t*' No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver?
Does the assessment area
overbank ff
during normal rainfall conditions?
r Yes f+ No
Yes t: No
1. Ground Surface ConditionlVegetation Condition — assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual). If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
GS VS
f+ A t'+ A Not severely altered
r B r B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub -Surface Storage Capacity and Duration — assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Surf) and sub -surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. A ditch s 1 foot deep is considered to affect surface water only,
while a ditch > 1 foot deep is expected to affect both surface and sub -surface water. Consider tidal flooding regime, if applicable.
Surf Sub
f+ A {: A Water storage capacity and duration are not altered.
f- B { B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
r C r C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water Storage/Surface Relief — assessment area/wetland type condition metric (skip for all marshes)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a. r A fes`• A Majority of wetland with depressions able to pond water > 1 foot deep
r B f" B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
C t'. C Majority of wetland with depressions able to pond water 3 to 6 inches deep
ro D f+' D Depressions able to pond water E 3 inches deep
3b. f- A Evidence that maximum depth of inundation is greater than 2 feet
r B Evidence that maximum depth of inundation is between 1 and 2 feet
i+ C Evidence that maximum depth of inundation is less than 1 foot

4. Soil Texture/Structure - assessment area condition metric (skip for all marshes)
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a. r A Sandy soil
(-t B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
r C Loamy or clayey soils not exhibiting redoximorphic features
C D Loamy or clayey gleyed soil
r E Histosol or histic epipedon
4b. r A Soil ribbon < 1 inch
ro B Soil ribbon 21 inch
4c. Co A No peat or muck presence
r B A peat or muck presence
5. Discharge Into Wetland - opportunity metric
Check a box in each column. Consider surface pollutants or discharges (Surf) and sub -surface pollutants or discharges (Sub).
Examples of sub -surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Surf Sub
r A r7, A Little or no evidence of pollutants or discharges entering the assessment area
r B r B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
r C r C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use - opportunity metric (skip for non -riparian wetlands)
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (5M), and within 2 miles and within the watershed draining to the assessment area (2M). Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
17A F A (? A 210% impervious surfaces
C B r B r B Confined animal operations (or other local, concentrated source of pollutants)
C C C` C I- C >_ 20% coverage of pasture
F D 17- D r D 2 20% coverage of agricultural land (regularly plowed land)
(-: E r E r E 2 20% coverage of maintained grass/herb
r F I•- F r F 2 20% coverage of clear-cut land
I- G r G r G Little or no opportunity to improve water quality. Lack of opportunity may result from little or no disturbance in
the watershed or hydrologic alterations that prevent dainage and/or overbank flow from affectio the
assessment area.
7. Wetland Acting as Vegetated Buffer - assessment arealwetland complex condition metric (skip for non -riparian wetlands)
7a. Is assessment area within 50 feet of a tributary or other open water?
rl, Yes r No If Yes, continue to 7b. If No, skip to Metric 8.
71b. How much of the first 50 feet from the bank is weltand? (Wetland buffer need only be present on one side of the water body. Make
buffer judgment based on the average width of wetland. Record a note if a portion of the buffer has been removed or disturbed.)
r A 2 50 feet
r B From 30 to < 50 feet
r C From 15 to < 30 feet
r:, D From 5 to < 15 feet
r. E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels/braids for a total width.
r,. <- 15 -feet wide r > 15 -feet wide r Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
rc Yes r No
7e. Is tributary or other open water sheltered or exposed?
r.' Sheltered - adjacent open water with width < 2500 feet and no regular boat traffic.
C" Exposed - adjacent open water with width 2 2500 feet or regular boat traffic.
8. Wetland Width at the Assessment Area - wetland typelwetiand complex condition metric (evaluate WT for all marshes
and Estuarine Woody Wetland only; evaluate WC for Bottomland Hardwood Forest, Headwater Forest, and Riverine Swamp
Forest only)
Check a box in each column. Select the average width for the wetland type at the assessment area (WT) and the wetland complex at the
assessment area (WC). See User Manual for WT and WC boundaries.
WT WC
r A r A 2100 feet
r B r B From 80 to < 100 feet
r C r C From 50 to < 80 feet
r D r D From 40 to < 50 feet
r E r E From 30 to < 40 feet
r F r.; F From 15 to < 30 feet
rG r,G From 5to<15 feet
r rH <5feet

9. Inundation Duration — assessment area condition metric (skip for non -riparian wetlands)
Answer for assessment area dominant landform.
r A Evidence of short -duration inundation (< 7 consecutive days)
r` B Evidence of saturation, without evidence of inundation
r C Evidence of long -duration inundation or very long -duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition — assessment area condition metric (skip for non -riparian wetlands and all marshes)
Consider recent deposition only (no plant growth since deposition).
[; A Sediment deposition is not excessive, but at approximately natural levels.
r" B Sediment deposition is excessive, but not overwhelming the wetland.
r~•• C Sediment deposition is excessive and is overwhelming the wetland.
11. Wetland Size — wetland typelwetland complex condition metric
Check a box in each column. Involves a GIS effort with field adjustment. This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (if applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear-cut, select "K" for the FW column.
WT WC FW (if applicable)
(7 A {* A {^, A 2 500 acres
r'? B r"` B r: B From 100 to < 500 acres
r"` C r C r C From 50 to < 100 acres
r" D r` D r. D From 25 to < 50 acres
E r7, E r7.. E From 1010 < 25 acres
["}F ,1F r From 5 to < 10 acres
r G r^ G r G From 1 to < 5 acres
(7 H H ? H From 0.5 to < 1 acre
I From 0.1 to < 0.5 acre
r, J r',. J r J From 0.01 to < 0.1 acre
r`-• K r`, K r?: K < 0.01 acre or assessment area is clear -cul
12. Wetland Intactness —wetland type condition metric (evaluate for Pocosins only)
(7, A Pocosin is the full extent (2 90%) of its natural landscape size.
r'••• B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas — landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and/or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water> 300 feet wide.
Well Loosely
r,A r >_500 acres
r B r`, B From 100 to < 500 acres
r". C r C From 50 to < 100 acres
r. D r-7 D From 10 to < 50 acres
r'+ E r? E < 10 acres
r" F (7 F Wetland type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only.
r"••. yes r'7 No Wetland type has a surface hydrology connection to open waters/stream or tidal wetlands.
14. Edge Effect —wetland type condition metric (skip for all marshes and Estuarine Woody Wetland)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non -forested areas a 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts. Consider
the eight main points of the compass. Artificial edge occurs within 150 feet in how many directions? If the assessment area is clear-cut,
select option "C."
r" A 0
r'B 1to4
r: C 5to8
15. Vegetative Composition — assessment area condition metric (skip for all marshes and Pine Flat)
A Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
r B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearculting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata.
r"••• c Vegetation severely altered from reference in composition, or expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species), or exotic species are dominant in
at least one stratum.
16. Vegetative Diversity— assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
r A Vegetation diversity is high and is composed primarily of native species (<10°/ cover of exotics).
(-. B Vegetation diversity is low or has > 10% to 50% cover of exotics.
r C Vegetation is dominated by exotic species (>50% cover of exotics).

17. Vegetative Structure — assessment arealwetland type condition metric
17a. Is vegetation present?
a Yes r No If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 17c for non -marsh wetlands.
(7 A >_ 25% coverage of vegetation
r B < 25% coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace above the assessment area (AA) and the wetland type (WT) separately.
AA WT
M r A (, A Canopy closed, or nearly closed, with natural gaps associated with natural processes
r!, B r: B Canopy present, but opened more than natural gaps
O r C r C Canopy sparse or absent
r
o (` A {; A Dense mid-story/sapling layer
w {J. B (, B Moderate density mid-story/sapling layer
v
(",. C ('? C Mid-story/sapling layer sparse or absent
2 r`. A r A Dense shrub layer
t (:, B (: B
Moderate density shrub layer
w r C r, c Shrub layer sparse or absent
(', A (^_. A Dense herb layer
(._ B (;. B Moderate density herb layer
(` C r C Herb layer sparse or absent
18. Snags —wetland type condition metric (skip for all marshes)
r^ A Large snags (mom than one) are visible (> 12 -inches DBH, or large relative to species present and landscape stability).
(.'. B Not A
19. Diameter Class Distribution — wetland type condition metric (skip for all marshes)
r) A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
.? B Majority of canopy trees have stems between 6 and 12 inches DBH, few are > 12 -inch DBH.
r'7 C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris — wetland type condition metric (skip for all marshes)
Include both natural debris and man -placed natural debris.
A Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
B Not A
21. Vegetation/Open Water Dispersion —wetland type/open water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water.
22. Hydrologic Connectivity— assessment area condition metric (evaluate for riparian wetlands and Salt/Brackish Marsh only)
Examples of activities that may severely alter hydrologic connectivity include intensive ditching, fill, sedimentation, channelization,
diversion, man-made berms, beaver dams, and stream incision. Documentation required if evaluated as B, C, or D.
r: A Overbank and overland flow are not severely altered in the assessment area.
r": B Overbank flow is severely altered in the assessment area.
(^: C Overland flow is severely altered in the assessment area.
r D Both overbank and overland flow are severely altered in the assessment area.

Wetland Site Name
Wetland Type
NC WAM Wetland Rating Sheet
Accompanies User Manual Version 5.0
Wetland D
Headwater Forest
Date 11/212016
Assessor Name/Organization Witherspoon/Amec FW
Notes on Field Assessment Form (YIN)
Condition/Opportunity
NO
Presence of regulatory considerations (YIN)
Opportunity Presence? (YIN)
NO
Wet€and is intensively managed (YIN)
Condition
NO
Assessment area is located within 50 feet of a natural tributary or other open water (Y/N)
YES
Assessment area is substantially altered by beaver (Y/N)
NO
Assessment area experiences overbank flooding during normal rainfall conditions (YIN)
NO
Assessment area is on a coastal island (YIN)
NA
NO
Sub -function Rating Summary
NA
Function Sub -function
Metrics
Rating
Hydrology Surface Storage and Retention
Condition
MEDIUM
Sub -Surface Storage and Retention
Condition
MEDIUM
Water Quality Pathogen Change
Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Particulate Change
Condition
HIGH
Condition/Opportunity
NA
Opportunity Presence? (Y/N)
NA
Soluble Change
Condition
HIGH
Function Rating Summary
Function
Condition/Opportunity
HIGH
Hydrology
Opportunity Presence? (YIN)
YES
Physical Change
Condition
MEDIUM
Condition/Opportunity
HIGH
Opportunity Presence? (Y/N)
YES
Pollution Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (Y/N)
NA
Habitat Physical Structure
Condition
MEDIUM
Landscape Patch Structure
Condition
LOW
Vegetation Composition
Condition
HIGH
Function Rating Summary
Function
Metrics/Notes
Rating
Hydrology
Condition
MEDIUM
Water Quality
Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Habitat
Condition
MEDIUM
Dverall Wetland Rating MEDIUM

NC WAM'WETLAND ASSESSMENT FORM
Accompanies User Manual Version 5
Project Name Dan River Steam Station Date of Evaluation 1112/2016
Applicant/Owner Name Duke Energy Wetland Site Name Wetland G
Wetland Type Headwater Forest Assessor Name/Organization Witherspoon/Amec FW
Level III Ecoregion Piedmont Nearest Named Water Body Dan River
River Basin Roanoke USGS 8 -Digit Catalogue Unit 03010103
County Rockingham NCDWR Region Winston-S@Pem
r Yes i*No Precipitation within 48 hrs? LatitudelLongitude (deci-degrees)
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and/or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following.
Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
• Surface and sub -surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc.)
Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
• Habftat/plant community alteration (examples: mowing, clear -cutting, exotics, eta)
Is the assessment area intensively managed? Yes t* No
Regulatory Considerations -Were regulatory considerations evaluated? r Yes f* No If Yes, check all that apply to the assessment area.
If Anadromous fish
F Federally protected species or State endangered or threatened species
IT" NCDWR riparian buffer rule in effect
[ Abuts a Primary Nursery Area (PNA)
F Publicly owned property
F N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HOW, ORW, or Trout
Designated NCNHP reference community
r Abuts a 303(d) -listed stream or a tributary to a 303(d) -listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
r Blackwater
f+ Brownwater
F Tidal (if tidal, check one of the following boxes) r Lunar r Wind r Both
Is the assessment area on a coastal Island? r Yes fe No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver?
Does the assessment area
overbank flooding during normal rainfall conditions?
r Yes t+ No
Yes:" No
1. Ground Surface ConditionNegetation Condition — assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual). If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
GS VS
r*. A A Not severely altered
B B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub -Surface Storage Capacity and Duration — assessment area condition metric
Check a box in each column, Consider surface storage capacity and duration (Surf) and sub -surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. A ditch s 1 foot deep is considered to affect surface water only,
while a ditch ? 1 foot deep is expected to affect both surface and sub -surface water. Consider tidal flooding regime, if applicable.
Surf Sub
(: A: A Water storage capacity and duration are not altered.
B f' B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
r C r C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water Storage/Surface Relief —assessment arealwetland type condition metric (skip for all marshes)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a. tr' A `; A Majority of wetland with depressions able to pond water n 1 foot deep
B B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
C r C Majority of wetland with depressions able to pond water 3 to 6 inches deep
re D r: D Depressions able to pond water < 3 inches deep
3b. t' A Evidence that maximum depth of inundation is greater than 2 feet
(" B Evidence that maximum depth of inundation is between 1 and 2 feet
fo C Evidence that maximum depth of inundation is less than 1 foot

4. Soil Texture/Structure — assessment area condition metric (skip for all marshes)
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a. r—A Sandy soil
re B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
r, C Loamy or clayey soils not exhibiting redoximorphic features
C D Loamy or clayey gleyed soil
E Histosol or histic epipedon
4b. r A Soil ribbon < 1 inch
ri, B Soil ribbon z 1 inch
4c. r� A No peat or muck presence
(-'- B A peat or muck presence
5. Discharge into Wetland—opportunity metric
Check a box In each column. Consider surface pollutants or discharges (Surf) and sub -surface pollutants or discharges (Sub).
Examples of sub -surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Surf Sub
(F A r, A Little or no evidence of pollutants or discharges entering the assessment area
B r,, B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
C ('i C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use — opportunity metric (skip for non -riparian wetlands)
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (5M), and within 2 miles and within the watershed draining to the assessment area (2M). Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
17 A 17 A r7 A 2 10% impervious surfaces
r B r B r B Confined animal operations (or other local, concentrated source of pollutants)
F C r C r C z 20% coverage of pasture
F D r D r D z 20% coverage of agricultural land (regularly plowed land)
r E r E r E z 20% coverage of maintained grass/herb
r- F r F r F z 20% coverage of clear-cut land
r G r G r G Little or no opportunity to improve water quality. Lack of opportunity may result from little or no disturbance in
the watershed or hydrologic alterations that prevent dainage and/or overbank flow from affectio the
assessment area.
7. Wetland Acting as Vegetated Buffer — assessment arealwetland complex condition metric (skip for non -riparian wetlands)
7a. Is assessment area within 50 feet of a tributary or other open water?
r Yes r No If Yes, continue to 7b. If No, skip to Metric 8.
7b. How much of the first 50 feet from the bank is weltand? (Wetland buffer need only be present on one side of the water body. Make
buffer judgment based on the average width of wetland. Record a note if a portion of the buffer has been removed or disturbed.)
r A z 50 feet
r B From 30 to < 50 feet
r C From 15 to < 30 feet
(. D From 5 to < 15 feet
r E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels/braids for a total width.
( 5 15 -feet wide (, > 15 -feet wide (- Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
ro Yes r No
7e. Is tributary or other open water sheltered or exposed?
(S Sheltered — adjacent open water with width < 2500 feet and no regular boat traffic.
(^.. Exposed — adjacent open water with width z 2500 feet or regular boat traffic.
1. Wetland Width at the Assessment Area —wetland type/wetland complex condition metric (evaluate WT for all marshes
and Estuarine Woody Wetland only; evaluate WC for Bottomland Hardwood Forest, Headwater Forest, and Riverine Swamp
Forest only)
Check a box in each column. Select the average width for the wetland type at the assessment area (WT) and the wetland complex at the
assessment area (WC). See User Manual for WT and WC boundaries.
WT WC
r A ('? A z 100 feet
B ("^. B From 80 to < 100 feet
C (` C From 50 to < 80 feet
r, D r D From 40 to < 50 feet
r E rE From 30 to < 40 feet
(^ F (; F From 15 to < 30 feet
(": G ) G From 5 to < 15 feet
rH r. H < 5 feet

9. Inundation Duration - assessment area condition metric (skip for non -riparian wetlands)
Answer for assessment area dominant landform.
C A Evidence of short -duration inundation (< 7 consecutive days)
t B Evidence of saturation, without evidence of inundation
r C Evidence of long -duration inundation or very long -duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition - assessment area condition metric (skip for non -riparian wetlands and all marshes)
Consider recent deposition only (no plant growth since deposition).
ro A Sediment deposition is not excessive, but at approximately natural levels.
(r. B Sediment deposition is excessive, but not overwhelming the wetland.
r C Sediment deposition is excessive and is overwhelming the wetland.
11. Wetland Size - wetland type/wetland complex condition metric
Check a box in each column. Involves a GIS effort with field adjustment. This metric evaluates three aspects of the wetland area: the
size of the welland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (if applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear-cut, select "K" for the FW wlumn.
WT WC FW If applicable)
(".A (7, A r'A 2500 acres
("r. B r) B (^y B From 100 to < 500 acres
r C r C C From 50 to < 100 acres
('; D r D("D From 25 to < 50 acres
(7' E (-r E (; E From 10 to < 25 acres
r,,F r r..F From 5to<10 acres
r G r G r, G From 1 to < 5 acres
r, H r H r, H From 0.5 to < 1 acre
I From 0.1 to < 0.5 acre
r J rr J IT J From 0.01 to < 0.1 acre
('! K (`• K (" K < 0.01 acre or assessment area is clear-cut
12. Wetland Intactness -wetland type condition metric (evaluate for Pocosins only)
r A Powsin is the full extent (>- 90%) of its natural landscape size.
(" B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas - landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and/or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water> 300 feet wide.
Well Loosely
r A r A a 500 acres
r B (7; B From 100 to < 500 acres
(' C r. C From 50 to < 100 acres
(^ D r D From 10 to < 50 acres
{'r. E ;:.. E < 10 acres
r F r, F Wetland type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only.
r Yes (" No Wetland type has a surface hydrology connection to open waters/stream or tidal wetlands.
14. Edge Effect -wetland type condition metric (skip for all marshes and Estuarine Woody Wetland)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non -forested areas 2 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts. Consider
the eight main points of the compass. Artificial edge occurs within 150 feet in how many directions? If the assessment area is clear-cut,
select option "C."
r,A 0
('B tto4
CO C 5to8
15. Vegetative Composition - assessment area condition metric (skip for all marshes and Pine Flat)
r A Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
r B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata.
r C Vegetation severely altered from reference in composition, or expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species), or exotic species are dominant in
at least one stratum.
16. Vegetative Diversity- assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
r A Vegetation diversity is high and is composed primarily of native species (<10 % cover of exotics).
C B Vegetation diversity is low or has > 10% to 50% cover of exotics.
(-_ C Vegetation is dominated by exotic species (>50% cover of exotics).

17. Vegetative Structure - assessment area/wetland type condition metric
17a. Is vegetation present?
rS Yes r No If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 17c for non -marsh wetlands.
r,A >-25% coverage of vegetation
r! B < 25% coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace above the assessment area (AA) and the wetland type (WT) separately.
AA WT
cr'_ A r'' A Canopy closed, or nearly closed, with natural gaps associated with natural processes
re, B r ., B Canopy present, but opened more than natural gaps
[ C,; C Canopy sparse or absent
c (^ A (", A Dense mid-story/sapling layer
N re:.. B rs B Moderate density mid-story/sapling layer
9
rr. c F C Mid-story/sapling layer sparse or absent
r`A
r;•A
Dense shrub layer
p r: B
r? B
Moderate density shrub layer
r;: C
(' C
Shrub layer sparse or absent
r"! A
,, A
Dense herb layer
r i B
C? B
Moderate density herb layer
r C
r,. C
Herb layer sparse or absent
18. Snags -wetland type condition metric (skip for all marshes)
rr A Large snags (more than one) are visible (> 12 -inches DBH, or large relative to species present and landscape stability).
r:, B Not A
19. Diameter Class Distribution - wetland type condition metric (skip for all marshes)
rr. A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
Co, B Majority of canopy trees have stems between 6 and 12 inches DBH, few are > 12 -inch DBH.
r C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris -wetland type condition metric (skip for all marshes)
Include both natural debris and man -placed natural debris.
r.A large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
rro B Not A
21. Vegetation/Open Water Dispersion -wetland typelopen water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water.
r"A rr,B is r>D
Y
22. Hydrologic Connectivity- assessment area condition metric (evaluate for riparian wetlands and Salt/Brackish Marsh only)
Examples of activities that may severely alter hydrologic connectivity include intensive ditching, fill, sedimentation, channelization,
diversion, man-made berms, beaver dams, and stream incision. Documentation required if evaluated as B, C, or D.
* A Overbank and overland flow are not severely altered in the assessment area.
* B Overbank Flow is severely altered in the assessment area.
r, C Overland flow is severely altered in the assessment area.
r.`. D Both overbank and overland flow are severely altered in the assessment area.

NC WAM Wetland Rating Sheet
Accompanies User Manual Version 5.0
Wetland Site Name Wetland G Date 11/212018
Wetland Type Headwater Forest Assessor Name/Organization Witherspoon/Amec FW
Notes on Field Assessment Form (YIN) NO
Presence of regulatory considerations (YIN) NO
Wetland is intensively managed (YIN) NO
Assessment area is located within 50 feet of a natural tributary or other open water (YIN) YES
Assessment area is substantially altered by beaver (YIN) NO
Assessment area experiences overbank flooding during normal rainfall conditions (YIN) NO
Assessment area is on a coastal island (YIN) NO
Sub -function Rating Summary
Function Sub -function
Metrics
Rating
Hydrology Surface Storage and Retention
Condition
MEDIUM
Sub -Surface Storage and Retention
Condition
MEDIUM
Water Quality Pathogen Change
Condition
HIGH
Condition/Opportunity
HIGH
Habitat
Opportunity Presence? (Y/N)
YES
Particulate Change
Condition
HIGH
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Soluble Change
Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Physical Change
Condition
MEDIUM
Condition/Opportunity HIGH
Opportunity Presence? (Y/N) YES
Pollution Change Condition NA
Condition/Opportunity NA
Opportunity Presence? (YIN) NA
Habitat Physical Structure Condition MEDIUM
Landscape Patch Structure Condition LOW
Vegetation Composition Condition MEDIUM
Function Rating Summary
Function
Metrics/Notes
Rating
Hydrology
Condition
MEDIUM
Water Quality
Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (Y/N)
YES
Habitat
Condition
LOW
Overall Wetland Rating MEDIUM

NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 5
uani ruvfr. NCDWR #:
Project Name Dan River Steam Station Date of Evaluation 11/2/2016
Applicant/Owner Name Duke Energy Wetland Site Name Wetlands J
Wetland Type Headwater Forest. Assessor Name/Organization WitherspoonlAmec FW
Level III Ecoregion Piedmont Nearest Named Water Body Dan River
River Basin Roanoke USGS 8 -Digit Catalogue Unit 03010103
County Rockingham NCDWR Region Winston-Salem
Yes t+ No Precipitation within 48 hrs? Latitude/Longitude (deci-degrees)
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and/or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following,
• Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
• Surface and sub -surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc,)
• Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
• Habitat/plant community alteration (examples: mowing, clear -cutting, exotics, etc.)
Is the assessment area intensively managed? ( Yes r. No
Regulatory Considerations - Were regu{atory considerations evaluated? i— Yes f—w No If Yes, check all that apply to the assessment area.
[— Anadromous fish
f Federally protected species or State endangered or threatened species
r NCDWR riparian buffer rule in effect
F Abuts a Primary Nursery Area (PNA)
r Publicly owned property
r N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
F_ Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HQW, ORW, or Trout
F Designated NCNHP reference community
F Abuts a 303(d) -listed stream or a tributary to a 303(d) -listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
r Blackwater
f+ Brownwater
F Tidal (if tidal, check one of the following boxes) (7 Lunar r Wind ( Both
Is the assessment area on a coastal island? t7' Yes >- No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver?
Does the assessment area
overbank flood!
during normal rainfall conditions?
� ' Yes r No
r Yes (T No
1. Ground Surface Condition/Vegetation Condition — assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual), If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
GS VS
r+ A t+ A Not severely altered
r B r B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub -Surface Storage Capacity and Duration — assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Surf) and sub -surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. A ditch s 1 foot deep is considered to affect surface water only,
while a ditch > 1 foot deep is expected to affect both surface and sub -surface water. Consider tidal flooding regime, if applicable.
Surf Sub
f: A (*7 A Water storage capacity and duration are not altered.
r B {'"'? B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
C (- C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water StoragelSurface Relief — assessment arealwetland type condition metric (skip for all marshes)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a. r A J—, A Majority of wetland with depressions able to pond water > 1 foot deep
"` B r B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
r C r C Majority of wetland with depressions able to pond water 3 to 6 inches deep
{ D r+ D Depressions able to pond water < 3 inches deep
3b. {" A Evidence that maximum depth of inundation is greater than 2 feet
B Evidence that maximum depth of inundation is between 1 and 2 feet
{. C Evidence that maximum depth of inundation is less than 1 foot

4. Soil Texture/Structure - assessment area condition metric (skip for all marshes)
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a r" -A Sandy soil
B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or mizospheres)
C Loamy or clayey soils not exhibiting redoximorphic features
r D Loamy or clayey gleyed soil
fir E Histosol or histic epipedon
4b. A Soil ribbon < 1 inch
B Soil ribbon 2 1 inch
4c. r� A No peat or muck presence
r, B A peat or muck presence
5. Discharge Into Wetland - opportunity metric
Check a box in each column. Consider surface pollutants or discharges (Surf) and sub -surface pollutants or discharges (Sub).
Examples of sub -surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Surf Sub
r A rik, A Little or no evidence of pollutants or discharges entering the assessment area
r B rB Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
(` C rj C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use - opportunity metric (skip for non -riparian wetlands)
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (510), and within 2 miles and within the watershed draining to the assessment area (210). Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
F A r A rs A a 10% impervious surfaces
r B r B r B Confined animal operations (or other local, concentrated source of pollutants)
r C r C r- C Z 20% coverage of pasture
F D r D r D z 20% coverage of agricultural land (regularly plowed land)
F E r E r E >- 20% coverage of maintained grasstherb
r F r F r F >- 20% coverage of clear-cut land
r G r- G r G Little or no opportunity to improve water quality. Lack of opportunity may result from little or no disturbance in
the watershed or hydrologic alterations that prevent dainage and/or overbank flow from affactio the
assessment area.
7. Wetland Acting as Vegetated Buffer- assessment arealwetland complex condition metric (skip for non -riparian wetlands)
7a. Is assessment area within 50 feet of a tributary or other open water?
r?. Yes [ No If Yes, continue to 7b. If No, skip to Metric 8.
7b. How much of the first 50 feet from the bank is weltand? (Wetland buffer need only be present on one side of the water body. Make
buffer judgment based on the average width of wetland. Record a note if a portion of the buffer has been removed or disturbed.)
A a 50 feet
r B From 3010 < 50 feet
T C From 15 to < 30 feet
D From 5 to < 15 feet
(" E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels/braids for a total width.
-< 15 -feet wide C > 15 -feet wide r Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
r!, Yes r No
7e. Is tributary or other open water sheltered or exposed?
r:; Sheltered - adjacent open water with width < 2500 feet and no regular boat traffic.
(`.: Exposed - adjacent open water with width >- 2500 feet or regular boat traffic.
8. Wetland Width at the Assessment Area - wetland type/wetland complex condition metric (evaluate WT for all marshes
and Estuarine Woody Wetland only; evaluate WC for Bottomland Hardwood Forest, Headwater Forest, and Riverine Swamp
Forest only)
Check a box in each column. Select the average width for the wetland type at the assessment area (WT) and the wetland complex at the
assessment area (WC). See User Manual for WT and WC boundaries.
WT WC
(, A O A z 100 feet
r B r B From 80 to < 100 feet
C (` C From 50 to < 80 feet
r D r D From 40 to < 50 feet
r E r: E From 30 to < 40 feet
r F (.; F From 15 to < 30 feet
r''•• G (", G From 5 to < 15 feet
r H (f H < 5 feel

9. Inundation Duration — assessment area condition metric (skip for non -riparian wetlands)
Answer for assessment area dominant landform.
A Evidence of short -duration inundation (< 7 consecutive days)
B Evidence of saturation, without evidence of inundation
r C Evidence of long -duration inundation or very long -duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition — assessment area condition metric (skip for non -riparian wetlands and all marshes)
Consider recent deposition only (no plant growth since deposition).
r A Sediment deposition is not excessive, but at approximately natural levels.
I- B Sediment deposition is excessive, but not overwhelming the wetland.
r) C Sediment deposition is excessive and is overwhelming the wetland.
11. Wetland Size—wetland type/wetland complex condition metric
Check a box in each column. Involves a GIS effort Wth field adjustment. This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (If applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear-cut, select "K" for the FW column.
WT WC FW (if applicable)
r A ("": A r, A z 500 acres
B r; B r`. B From 100 to < 500 acres
r'•: C r C r; C From 50 to < 100 acres
('". D r'; D r, D From 25 to < 50 acres
(^ E r'I E r^: E From 10 to < 25 acres
r F rt F r` F From 5 to < 10 acres
r, G r, G ( G From 1 to < 5 acres
r•••• H r H r,'S H From 0.5 to < 1 acre
r" 1 r) I r} I From 0.1 to < 0.5 acre
( J r.^ J ro, J From 0.01 to < 0.1 acre
r'•: K r} K r, K < 0.01 acre or assessment area is clear-cut
12. Wetland Intactness —wetland type condition metric (evaluate for Pocosins only)
r••'• A Pocosin is the full extent (? 90%) of its natural landscape size.
r B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas — landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and/or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water> 300 feet wide.
Well Loosely
r`. A r., A >_ 500 acres
r_` B r; B From 100 to < 500 acres
(- C rS C From 50 to < 100 acres
r••••• D r; D From 10 to < 50 acres
r. E (:. E < 10 acres
r- Fr; F Wetland type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only.
r~'•• Yes r No Wetland type has a surface hydrology connection to open waters/stream or tidal wetlands.
14. Edge Effect —wetland type condition metric (skip for all marshes and Estuarine Woody Wetland)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non -forested areas a 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts. Consider
the eight main points of the compass. Artificial edge occurs within 150 feet in how many directiions? If the assessment area is clear-cut,
select option "C."
rA 0
(^B 1to4
(: C 5t09
15. Vegetative Composition — assessment area condition metric (skip for all marshes and Pine Flat)
(: A Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
(".. B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata.
r". C Vegetation severely altered from reference in composition, or expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species), or exotic species are dominant in
at least one stratum.
16. Vegetative Diversity— assessment area condition metric (evaluate for Non-ticial Freshwater Marsh only)
r" A Vegetation diversity is high and is composed primarily of native species (<10% cover of exotics).
r'; B Vegetation diversity is low or has > 10% to 50% cover of exotics.
(- C Vegetation is dominated by exotic species (>50% cover of exotics).

17. Vegetative Structure — assessment arealwetland type condition metric
17a. Is vegetation present?
(S Yes r, No If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 17c for non -marsh wetlands.
r A 2 25% coverage of vegetation
(" B < 25% coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace above the assessment area (AA) and the wetland type (WT) separately.
AA WT
or A (; A Canopy closed, or nearly closed, with natural gaps associated with natural processes
r B ro B Canopy present, but opened more than natural gaps
O r C r C Canopy sparse or absent
oi'. A rj A Dense mid-story/sapling layer
N r: B (; B Moderate density mid-story/sapling layer
c
(': C (-` C Mid-story/sapling layer sparse or absent
r`-• A [' A Dense shrub layer
z
('-. B ("3 B Moderate density shrub layer
N (:r C (., C Shrub layer sparse or absent
a r,, A (— A Dense herb layer
(? B r B Moderate density herb layer
r C r C Herb layer sparse or absent
18. Snags — wetland type condition metric (skip for all marshes)
r' A Large snags (more than one) are visible (> 12 -inches DBH, or large relative to species present and landscape stability).
(, B Not A
19. Diameter Class Distribution — wetiand type condition metric (skip for all marshes)
r"• A Majority of canopy trees have stems> 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
r B Majority of canopy trees have stems between 6 and 12 inches DBH, few are> 12 -inch DBH.
C C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris —wetland type condition metric (skip for all marshes)
Include both natural debris and man -placed natural debris.
A Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
B Not A
21. Vegetation/Open Water Dispersion —wetland type/open water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water.
22. Hydrologic Connectivity— assessment area condition metric (evaluate for riparian wetlands and Salt/Brackish Marsh only)
Examples of activities that may severely alter hydrologic connectivity include intensive ditching, fill, sedimentation, channelization,
diversion, man-made berms, beaver dams, and stream incision. Documentation required if evaluated as B, C, or D.
(e A Overbank and overland flow are not severely altered in the assessment area.
(7, B Overbank flow is severely altered in the assessment area.
('r.. C Overland flow is severely altered in the assessment area.
r D Both overbank and overland flow are severely altered in the assessment area.

NC WAM Wetland Rating Sheet
Accompanies User Manual Version 5.0
Wetland Site Name Wetlands J Date 11/212016
Wetland Type Headwater Forest Assessor Name/Organization Witherspoon/Amec FW
Notes on Field Assessment Form (YIN) NO
Presence of regulatory considerations (YIN) NO
Wetland is intensively managed (YIN) NO
Assessment area is located within 50 feet of a natural tributary or other open water (YIN) YES
Assessment area is substantially altered by beaver (YIN) NO
Assessment area experiences overbank flooding during normal rainfall conditions (YIN) NO
Assessment area is on a coastal island (YIN) NO
Sub -function Rating Summary
Function Sub -function
Metrics
Rating
Hydrology Surface Storage and Retention
Condition
MEDIUM
Sub -Surface Storage and Retention
Condition
MEDIUM
Water Quality Pathogen Change
Condition
HIGH
Opportunity Presence? (YIN)
Condition/Opportunity
HIGH
Habitat
Opportunity Presence? (YIN)
YES
Particulate Change
Condition
HIGH
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Soluble Change Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Physical Change Condition
MEDIUM
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Pollution Change Condition NA
Condition/Opportunity NA
Opportunity Presence? (YIN) NA
Habitat Physical Structure Condition LOW
Landscape Patch Structure Condition LOW
Vegetation Composition Condition HIGH
Function Rating Summary
Function
Metrics/Notes
Rating
Hydrology
Condition
MEDIUM
Water Quality
Condition
HIGH
Condition/Opportunity
HIGH
Opportunity Presence? (YIN)
YES
Habitat
Condition
LOW
Overall Wetland Rating MEDIUM

WETLAND DETERMINATION DATA FORM - Eastern Mountains and Piedmont Dredge Basin
Project/Site: Dan River Station City/Co.: Eden, Rockingham Sampling Date: 12/20/2016
Applicant/Owner: Duke Energy State: NC Sampling Point: Flag #DB -1
Investigator(s): J. Cutler Section, Township, Range:
Landform: (hillslope, terrace, etc.) hillslope Local Relief: concave Slope (%): 5
Subregion(LRR/MLRA LRR P Lat: 36.492998 Long: -79.714425 Datum:
Soil Map Unit Name: Clover sandy loam, 8 to 15 percent slopes (CmD) NWI Classification: Freshwater Pond (southern end)
Are climatic/hydrologic conditions on the site typical for this time of year? dyes ❑ No (If no, explain in Remarks.)
Are Vegetation ❑� , Soil ❑ or Hydrology [Z significantly disturbed? Are "Normal Circumstances" present? -Y[] r c
Are Vegetation ❑ , Soil Q 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 Q No ❑ within a wetland? Yes ❑ No ❑
Wetland Hydrology Present? Yes Q No ❑
Remarks
Dredge basin was constructed from upland area. Ash deposits occur throughout basin depression.
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 (Al)
❑
True Aquatic Plants (B14)
❑
Sparsely Vegetated Concave Surface (B8)
0 High Water Table (A2)
❑
Hydrogen Sulfide Odor (Cl)
❑
Drainage Patterns (1310)
❑J Saturation (A3)
❑
Oxidized Rhizospheres on Living Roots (C3)
❑
Moss Trim Lines (B16)
❑ Water Marks (131)
❑
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 (133)
❑
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 (135)
❑
Geomorphic Position (D2)
❑ Inundation Visible on Aerial Imagery (137)
❑
Shallow Aquitard (D3)
❑ Water -Stained Leaves (139)
❑
Microtopographic Relief (D4)
❑ Aquatic Fauna (1313)
Q
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? ❑ Yes
❑ No
Depth (inches):
Water Table Present? ® Yus
❑ No
Depth (inches): 6
Saturation Present? ❑J Yes
Q No
Depth (inches): 3
Wetland Hydrology
Present? ®es ❑ No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Wetland hydrology criteria met.
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0

vtlot I A I WN (rive wraia) -use scienTITIc names OT plants.
Absolute Dominant Indicator
Tree Stratum (Plot size: 30 ft ) % Cover Species? Status
1.
2.
3.
4.
5.
(A)
6.
50% of total cover:
Sapling Stratum
(Plot size: 30 ft )
1.
(B)
2.
3.
4.
5.
(A/B)
6.
50% of total cover:_
Shrub Stratum
(Plot size: 30 ft )
1.
2.
x 1=
3.
4.
x2=
5.
6.
x3=
0
50% of total cover:
Herb Stratum
(Plot size: 10 ft )
1. Phragmites oustralis
UPL species 0
2.
0
3.
Column Totals: 90 (A)
4.
180
5.
Prevalence Index = B/A =
6.
7.
8.
9.
10.
11.
50% of total cover:
Woody Vine Straturr
(Plot size: 30 ft )
1.
2.
3.
4.
5.
= Total Cover
20% of total cover:
= Total Cove
20% of total cover:
= Total Cove
20% of total cover:
90 y
90 = Total Cov<
45 20% of total cover:
= Total Cover
50% of total cover: 20% of total cover:
Remarks: (If observed, list morphological adaptations below)
Sampling 1`0111: Flag #DB -1
Number of Dominant Species
That Are OBL, FACW, or FAC:
1
(A)
Total Number of Dominant
Species Across All Strata:
1
(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:
100%
(A/B)
Prevalence Index worksheet:
OBL species 0
x 1=
0
FACW species 90
x2=
180
FAC species 0
x3=
0
FACU species 0
x4=
0
UPL species 0
x5=
0
Column Totals: 90 (A)
180
(B)
Prevalence Index = B/A =
2.0
Hydrophytic Vegetation Indicators:
Q Dominance Test is > 50%
Q Prevalence Index is <_ 3.01
El Problematic Hydrophytic Vegetation' (Explain)
Q
1 Indicators of hydric soil and wetland hydrology must
Ele present, unless disturbed or problematic
Definitions of Vegetation Strata:
Tree - Woody plants, excluding woody vines, approximately
FACW 20 ft (6 m) or more in height and 3 in. (7.6 cm) or larger in
diameter at breast height (DBH).
Sapling - Woody plants, excluding woody vines,
approximately 20 ft (6 m) or more in height and less than 3
in. (7.6 cm) DBH.
Shrub - Woody plants, excluding woody vines,
approximately 3 to 20 ft (1 to 6 m) in height.
Herb - All herbaceous (non -woody) plants, including
herbaceous vines, regardless of size. Includes woody
plants, except woody vines, less than approximately 3 ft (1
m) in height.
Woody vine - All woody vines, regardless of height.
Hydrophytic
Vegetation Yes No El
Present?
Hydrophytic vegetation criteria met. Common reed has recruited aggresively throughout basin.
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0

JVIL
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators).
Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type' Loc' Texture
iF]
roinu Flag nuts -1
10 YR 2/1 (black) 100 Coal ash deposits
7.5YR5/6 60 10YR6/2 40 C M Loam Buried horizon
10YR6/5 100 Loam Buried horizon
'Type C = Concentration, D = depletion, RM = Reduced Matrix, MS = Masked Sand Grains
El
El
❑
❑
❑
El❑
e■
Soil Indicators:
Histosol (Al)
Histic Epipedon (A2)
Black Histic (A3)
Hydrogen Sulfide (A4)
Stratified Layers (A5)
2 cm Muck (A10) (LRR N)
Depleted Below Dark Surface (A11)
Thick Dark Surface (Al2)
Sandy Mucky Material (S1)
(LRR N, MLRA 147, 148)
Sandy Gleyed Matrix (S4)
Sandy Redox (S4)
Stripped Matrix (S5)
ctive Layer (if observed):
Type:
Depth (inches):
bark Surface (S7)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Thin Dark Surface (S9) (MLRA 147, 148)
Loamy Gleyed Matrix (F2)
Depleted Matrix (F3)
Redox Dark Surface (F6)
Depleted Dark Surface (F7)
Redox Depressions (F8)
Iron -Manganese Masses (F12) (LRR N, MLRA 136)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
Red Parent Material (F21) (MLRA 127, 147)
soil criteria met, but below coal ash deposits (upper horizon).
Remarks
`Location: PL = Pore Lining, M = Matrix
Indicators for Problematic Hydric Soils
❑
2 cm Muck (A10) (MLRA 147)
❑
Coatal Prairie Redox (A16)
(MLRA 147, 148)
❑
Piedmont Floodplain Soils (F19)
(MLRA 136, 147)
❑
Very Shallow Dark Surface (TF12)
❑
Other (Explain in Remarks)
31ndicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Hydric Soil Present? Yes 1, No ❑
US Army Corps of Engineers Eastern Mountains and Piedmont - Version 2.0

NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 5
.Hi urE:
Project Name Dan River Steam Station Date of Evaluation 11/2/2016
Applicant/Owner Name Duke Energy Wetland Site Name Phragmites Basin
Wetland Type Headwater Forest Assessor Name/Organization WitherspoonlAmec FW
Level III Ecoregion Piedmont Nearest Named Water Body Dan River
River Basin Roanoke USGS 8 -Digit Catalogue Unit 03010103
County Rockingham NCDWR Region Winston-Salem
t"~ Yes 0 No Precipitation within 48 hrs? Latitude/Longitude (deci-degrees)
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and/or make note on last page if evidence of stressors is apparent. Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years). Noteworthy stressors include, but are not limited
to the following.
• Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
• Surface and sub -surface discharges into the wetland (examples: discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc.)
• Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
Habitatlplant community alteration (examples: mowing, clear -cutting, exotics, etc.)
Is the assessment area intensively managed? re Yes r No
Regulatory Considerations -Were regulatory considerations evaluated? (7 Yes do No If Yes, check all that apply to the assessment area.
F Anadromous fish
r_ protected species or State endangered or threatened species
f NCDWR riparian buffer rule in effect
Abuts a Primary Nursery Area (PNA)
IJ Publicly owned property
€— N.C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
IT Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HOW, ORW, or Trout
F Designated NCNHP reference community
F Abuts a 303(d) -listed stream or a tributary to a 303(4) -listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
r Blackwater
Brownwater
i Tidal (if tidal, check one of the following boxes) (" Lunar r Wind t' Both
Is the assessment area on a coastal island? r Yes i* No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver?
Does the assessment area
overbank flooding during normal rainfall conditions?
,(- Yes t+• No
Yes f'No
1. Ground Surface Condition/Vegetation Condition — assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area. Compare to reference wetland if applicable (see User Manual). If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
GS VS
r A (' A Not severely altered
ro B (4 B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub -Surface Storage Capacity and Duration — assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Surf) and sub -surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. A ditch s 1 foot deep is considered to affect surface water only,
while a ditch > 1 foot deep is expected to affect both surface and sub -surface water. Consider tidal flooding regime, if applicable.
Surf Sub
A (7 A Water storage capacity and duration are not altered.
B r B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
C is C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water StoragelSurface Relief — assessment area/wetland type condition metric (skip for all marshes)
Check a box in each column for each group below. Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a. (7 A ( A Majority of wetland with depressions able to pond water > 1 foot deep
r B (" B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
C (o C Majority of wetland with depressions able to pond water 3 to 6 inches deep
r D (-, D Depressions able to pond water < 3 inches deep
3b. (" A Evidence that maximum depth of inundation is greater than 2 feet
(7 B Evidence that maximum depth of inundation is between 1 and 2 feet
ti C Evidence that maximum depth of inundation is less than 1 foot

4. Soil Texture/Structure - assessment area condition metric (skip for all marshes)
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature. Make soil observations within the 12 inches. Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators.
4a. GA Sandy soil
r B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
r C Loamy or clayey soils not exhibiting redoximorphic features
C'S D Loamy or clayey gleyed soil
r- E Histosol or histic epipedon
4b. r A Soil ribbon < 1 inch
r, B Soil ribbon z 1 inch
4c. r No peat or muck presence
r B A peat or muck presence
5. Discharge into Wetland -opportunity metric
Check a box In each column. Consider surface pollutants or discharges (Surf) and sub -surface pollutants or discharges (Sub).
Examples of sub -surface discharges include presence of nearby septic tank, underground storage tank (UST), etc.
Surf Sub
r-': A r� A Little or no evidence of pollutants or discharges entering the assessment area
r" B {r; B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
{) C ("'=C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use - opportunity metric (skip for non -riparian wetlands)
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment. Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (5M), and within 2 miles and within the watershed draining to the assessment area (21M). Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion.
WS 5M 2M
FA r7 r+'A 210% impervious surfaces
r B r B r B Conflned animal operations (or other local, concentrated source of pollutants)
r C r C r C a 20% coverage of pasture
F D r D r D >_ 20% coverage of agricultural land (regularly plowed land)
r E r E r E 2 20% coverage of maintained grass/herb
r F r F r F z 20% coverage of clear-cut land
r G r G r G Little or no opportunity to improve water quality. Lack of opportunity may result from little or no disturbance in
the watershed or hydrologic alterations that prevent damage and/or overbank flow from affectio the
assessment area.
7. Wetland Acting as Vegetated Buffer -assessment area/wetland complex condition metric (skip for non -riparian wetlands)
7a. Is assessment area within 50 feet of a tributary or other open water?
r: Yes rr No If Yes, continue to 7b. If No, skip to Metric 8.
7b. How much of the first 50 feet from the bank is weltand? (Wetland buffer need only be present on one side of the water body. Make
bufferjudgment based on the average width of wetland. Record a note if a portion of the buffer has been removed or disturbed.)
r. A a 50 feet
r B From 30 to < 50 feet
r C From 15 to < 30 feet
(:, D From 5 to < 15 feet
("'- E < 5 feet or buffer bypassed by ditches
7c. Tributary width. If the tributary is anastomosed, combine widths of channels/braids for a total width.
(: 5 15 -feet wide (; > 15 -feet wide ('1 Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
(_: Yes r". No
7e. Is tributary or other open water sheltered or exposed?
(: Sheltered - adjacent open water with width < 2500 feet and no regular boat traffic.
(", Exposed - adjacent open water with width z 2500 feet or regular boat traffic.
il. Wetland Width at the Assessment Area - wetland type/wetland complex condition metric (evaluate WT for all marshes
and Estuarine Woody Wetland only; evaluate WC for Bottomland Hardwood Forest, Headwater Forest, and Riverine Swamp
Forest only)
Check a box in each column. Select the average width for the wetland type at the assessment area (WT) and the wetland complex at the
assessment area (WC). See User Manual for WT and WC boundaries.
WT WC
(° A ro A z 100 feet
B C B From 80 to < 100 feet
r^ C r' C From 50 to < 80 feet
r"'- D r D From 40 to < 50 feel
r. E r� E From 30 to < 40 feet
r F r. F From 15 to < 30 feet
('tG r,,G From 5to<15 feet
r H r H < 5 feet

9. Inundation Duration - assessment area condition metric (skip for non -riparian wetlands)
Answer for assessment area dominant landform.
r. A Evidence of short -duration inundation (< 7 consecutive days)
r B Evidence of saturation, without evidence of inundation
(7 C Evidence of long -duration inundation or very long -duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition -assessment area condition metric (skip for non -riparian wetlands and all marshes)
Consider recent deposition only (no plant growth since deposition).
r A Sediment deposition is not excessive, but at approximately natural levels.
r B Sediment deposition is excessive, but not overwhelming the wetland.
(7 C Sediment deposition is excessive and is overwhelming the wetland.
11. Wetland Size - wetland type/wetland complex condition metric
Check a box in each column. Involves a GIS effort with field adjustment. This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (H applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear-cut, select "K" for the FW column.
WT WC FW (if applicable)
r A r; A r^. A a 500 acres
r B r, B r ,- B From 100 to < 500 acres
('+ C r C r= C From 50 to < 100 acres
D r D (r: D From 2510 < 50 acres
r E r E (,, E From 10 to < 25 acres
r"F r r.F From 5to<10 acres
re, G (. G (-i G From 1 to < 5 acres
r. H r" H (", H From 0.5 to < 1 acre
r7,••.1 r"; 1 C.. I From 0.1 to < 0.5 acre
r J (-, J r. J From 0.01 to < 0.1 acre
r K r, K r K < 0.01 acre or assessment area is clear-cut
12. Wetland Intactness - wetland type condition metric (evaluate for Pocosins only)
r A Pocosin is the full extent (z 90%) of its natural landscape size.
(7, B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas - landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and/or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water > 300 feet wide.
Well Loosely
r"` A r A t 500 acres
r. B (') B From 100 to < 500 acres
r=`: C r'' C From 50 to < 100 acres
rr` D r, D From 10 to < 50 acres
r-': E r:, E < 10 acres
(^: F r~- F Welland type has a poor or no connection to other natural habitats
131b. Evaluate for marshes only.
r". Yes ('., No Wetland type has a surface hydrology connection to open waters/stream or tidal wetlands.
14. Edge Effect -wetland type condition metric (skip for all marshes and Estuarine Woody Wetland)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non -forested areas 2 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts. Consider
the eight main points of the compass. Artificial edge occurs within 150 feet in how many directions? If the assessment area is clear-cut,
select option "C."
('A 0
r1 B 1 to 4
(: C 5to8
15. Vegetative Composition - assessment area condition metric (skip for all marshes and Pine Flat)
rr: A Vegetation is close to reference condition in species present and their proportions. Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
r B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata.
r: C Vegetation severely altered from reference in composition, or expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species), or exotic species are dominant in
at least one stratum.
16. Vegetative Diversity - assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
r A Vegetation diversity is high and is composed primarily of native species (<10% cover of exotics).
r". B Vegetation diversity is low or has > 10% to 50% cover of exotics.
r C Vegetation is dominated by exotic species (>50% cover of exotics).

17. Vegetative Structure — assessment area/wetland type condition metric
17a. Is vegetation present?
(.: Yes (,, No If Yes, continue to 17b. If No, skip to Metric 18.
17b. Evaluate percent coverage of assessment area vegetation for all marshes only. Skip to 17c for non -marsh wetlands.
r A a 25% coverage of vegetation
r B <25°/ coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands. Consider structure
in airspace above the assessment area (AA) and the wetland type (WT) separately.
AA WT
a r A r A Canopy closed, or nearly closed, with natural gaps associated with natural processes
�
B r B Canopy py present, but opened more than natural gaps
O (: C ( C Canopy sparse or absent
Z
ro (' A (^; A Dense mid-story/sapling layer
{'. B (rS B Moderate density mid-story/sapling layer
r C (:? C Mid-story/sapling layer sparse or absent
M r A
(! A
Dense shrub layer
2 t . B
(t' B
Moderate density shrub layer
y C- C
r, C
Shrub layer sparse or absent
r A
r A
Dense herb layer
r B
r B
Moderate density herb layer
r C
r, C
Herb layer sparse or absent
18. Snags — wetland type condition metric (skip for all marshes)
A Large snags (more than one) are visible (> 12 -inches DBH, or large relative to species present and landscape stability).
(7B NotA
19. Diameter Class Distribution —wetland type condition metric (skip for all marshes)
r A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH); many large trees (> 12 inches DBH) are
present.
r B Majority of canopy trees have stems between 6 and 12 inches DBH, few are > 12 -inch DBH.
{} C Majority of canopy trees are < 6 inches DBH or no trees.
20. Large Woody Debris —wetland type condition metric (skip for all marshes)
Include both natural debris and man -placed natural debris.
('r: A Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
(: B NotA
21. Vegetation/Open Water Dispersion —wetland typelopen water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water.
r A r B r C r D
9-
r
22. Hydrologic Connectivity— assessment area condition metric (evaluate for riparian wetlands and Salt/Brackish Marsh only)
Examples of activities that may severely alter hydrologic connectivity include intensive ditching, fill, sedimentation, channelization,
diversion, man-made berms, beaver dams, and stream incision. Documentation required if evaluated as B, C, or D.
r A Overbank and overland flow are not severely altered in the assessment area.
is B Overbank flow is severely altered in the assessment area.
C Overland flow is severely altered in the assessment area.
('r. D Both overbank and overland flow are severely altered in the assessment area.
Assessment area is an old man-made sediment basin dominated by Phragmites. Overbank flow sevedy altered by basin construction. Basin
constructed in what previously was likely a headwater forest.

NC WAM Wetland Rating Sheet
Accompanies User Manual Version 5.0
Wetland Site Name Phragmites Basin
Date
11/212016
Wetland Type Headwater Forest
Assessor Name/Organization
Witherspoon/Amec FW
Notes on Field Assessment Form (YIN)
Condition
YES
Presence of regulatory considerations (YIN)
Condition/Opportunity
NO
Wetland is intensively managed (YIN)
Opportunity Presence? (YIN)
YES
Assessment area is located within 50 feet of a natural tributary or other open water (YIN)
YES
Assessment area is substantially altered by beaver (YIN)
NO
Assessment area experiences overbank flooding during normal rainfall conditions (YIN)
NO
Assessment area is on a coastal island (YIN)
NO
Sub -function Rating Summary
Function Sub -function
Metrics
Rating
Hydrology Surface Storage and Retention
Condition
LOW
Sub -Surface Storage and Retention
Condition
LOW
Water Quality Pathogen Change
Condition
MEDIUM
Condition/Opportunity
MEDIUM
Opportunity Presence? (YIN)
NO
Particulate Change
Condition
LOW
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Soluble Change
Condition
MEDIUM
Condition/Opportunity
MEDIUM
Opportunity Presence? (YIN)
NO
Physical Change
Condition
LOW
Condition/Opportunity
LOW
Opportunity Presence? (YIN)
NO
Pollution Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Habitat Physical Structure
Condition
LOW
Landscape Patch Structure
Condition
LOW
Vegetation Composition
Condition
LOW
Function Rating Summary
Function
Metrics/Notes
Rating
Hydrology
Condition
LOW
Water Quality
Condition
LOW
Condition/Opportunity
LOW
Opportunity Presence? (YIN)
NO
Habitat
Condition
LOW
Overall Wetland Rating LOW

user manual version z.1
INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USES 7.5 -minute topographic
quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same
property, identify and number all reaches on the attached map, and include a separate form for each reach. See the NO SAM User
Manual for detailed descriptions and explanations of requested information. Record in the "Notes/Sketch" section if any supplementary
measurements were performed. See the NO SAM User Manual for examples of additional measurements that may be relevant.
NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area).
PROJECT! SITE INFORMATION:
1. Project name (if any): Dan River Steam Station 2. Date of evaluation: 11-2-16
3. Applicant/owner name: Duke Energy 4. Assessor name/crganization: J.HowardlJ.Cutier
5. County: Rockingham 6. Nearest named water body
7. River Basin: Roanoke on USGS 7.5 -minute quad: Dan River
8. Site coordinates (decimal degrees, at lower end of assessment reach): See GPS Data
STREAM INFORMATION: (depth and width can be approximations)
9. Site number (show on attached map): Stream 1 U/S (DS -2) 10. Length of assessment reach evaluated (feet): 100,
11. Channel depth from bed (in riffle, if present) to top of bank (feet): 24 r Unabie to assess channel depth.
12. Channel width at top of bank (feet): 34 13. Is assessment reach a swamp stream? f Yes #''r No
14. Feature type: 67 Perennial flow Intermittent flow r Tidal Marsh Stream
STREAM RATING INFORMATION:
15. NO SAM Zone: C Mcunta"ns (M) {+` Piedmont (P) r Inner Coastal Plain (1) (` Outer Coastal Plain (D)
16. Estimated geomorphic
valley shape (skip for a (+ b
Tidal Marsh Stream): (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope)
17. Watershed size: (skip k7. Size 1 (< 0.1 mi') ( Size 2 (0.1 to < 0.5 mi`) r Size 3 (0,5 to < 5 mi) (7 Size 4 (>: 5 mi)
for Tidal Marsh Stream)
ADDITIONAL INFORMATION:
18. Were regulatory considerations evaluated? f. -F Yes (7 No If Yes, check all that appy to the assessment area.
F ection 10 water j-` Classified Trout Waters r Water Supply Watershed ( (- I f- II r III r, IV r V)
F Essential Fish Habitat f"" Primary Nursery Area C-" High Quality Waters/Outstanding Resource Waters
r Publicly owned property r NCDWR riparian buffer rule in effect r Nutrient Sensitive Waters
F Anadromous fish r 303(d) List r CAMA Area of Environmental Concern (AEC)
F_ Documented presence of a federal and/or state listed protected species within the assessment area.
List species:
r` Designated Critical Habitat (list species):
19. Are additional stream information/supplementary measurements included in "Notes/Sketch" section or attached? f. Yes No
1. Channel Water- assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams)
rA Water throughout assessment reach.
r B No flow, water in pools only.
(+ C No water in assessment reach.
2. Evidence of Flow Restriction -assessment reach metric
! A At least 10% of assessment reach in -stream habitat or riffle -pool sequence is adversely affected by a now restriction or fill to the
point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impounded on flood or ebb within
the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates).
B Not A
3. Feature Pattern -assessment reach metric
r A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert).
(F B Not A.
4. Feature Longitudinal Profile -- assessment reach metric
f` A Majority of assessment reach has a substantially altered stream profile (examples: channel down -cutting, existing damming,
over widening, active aggraciation, dredging, and excavation where appropriate channel profile has not reformed from any of
these disturbances).
r. B Not
5. Signs of Active Instability -assessment reach metric
Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include
active bank failure, active channel down -cutting (head -cut), active widening, and artificial hardening (such as concrete, gabion, rip -rap).
Co A < 10% of channel unstable
(` B 10 to 25% of channel unstable
('"r C ? 25% of channel unstable

6. Streamside Area Interaction - streamside area metric
Consider for the Left Bank (LB) and the Right Bank (RB).
LB RB
r A C A Little or no evidence of conditions that adversely affect reference interaction
(-7 B r B Moderate evidence of conditions (examples: berms, levees, down -cutting, aggradation, dredging) that adversely affect
reference interaction (examples: limited streamside area access, disruption of flood flows through streamside area,
leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching])
C (, C Extensive evidence of conditions that adversely affect reference interaction (little to no f oodplalmintertidal zone access
[examples: causeways with floodplain and channel constriction, bulkheads, retaining walls, fill, stream incision,
disruption of flood flows through streamside area] or too much f oodplainfinteridal zone access [examples:
impoundments, intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a
man-made feature on an interstream divide
7. Water Quality Stressors- assessment reach/intertidal zone metric
Check all that apply.
r- A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam)
r B Excessive sedimentation (burying of stream features or intertidal zone)
r- C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem
r- D Odor (not including natural sulfide odom)
[ E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in the "Notes/Sketch"
section.
['- F Livestock with access to stream or intertidal zone
C G Excessive algae in stream or intertidal zone
r- H Degraded marsh vegetation In the intertidal zone (removal, burning, regular mowing, destruction, etc.)
r I Other: (explain in "Notes/Sketch' section)
P- J Little to no stressors
8. Recent Weather -watershed metric
For Sae 1 or 2 streams, D1 drought or higher is considered a drought; for Sae 3 or 4 streams, D2 drought or higher is considered a
drought.
f- A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours
r, B Drought conditions and rainfall exceeding 1 inch within the last 48 hours
4 C No drought conditions
9 Large or Dangerous Stream -assessment reach metric
r Yes r No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition).
10. Natural In -stream Habitat Types -assessment reach metric
10a. C Yes r No Degraded in -stream habitat over majority of the assessment reach (examples of stressors include excessive
sedimentation, mining, excavation, in -stream hardening [for example, rip -rap], recent dredging, and snagging)
(evaluate for sae 4 Coastal Plain streams only, then skip to Metric 12)
106. Check all that occur (occurs N> 5% coverage of assessment reach) (skip for Sae 4 Coastal Plain streams)
r- A Multiple aquatic macrophytes and aquatic mosses m m r- F 5% oysters or otter natural hard bottoms
(include liverworts, lichens, and algal mats) F m r- G Submerged aquatic vegetation
r+ B MuMple sticks and/or leaf packs and/or emergent $ y r- H Low -tide refugia (pools)
vegetationc o r 1 Sand bottom
r- C MuMple snags and logs (including lap trees) %2 (- J 5% vertical bank along the marsh
VD 5% undercut banks and/or root mats and/or roots U r -K Little or no habitat
In banks extend to the normal wetted perimeter
f- E Little or no habitat
--- QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS --
If. Bedfonn and Substrate - assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
11 a. r? Yes (- No Is assessment reach in a natural sand -bed stream? (skip for Coastal Plain streams)
11 b. Sedtorm evaluated. Check the appropriate box(es).
P A Riffle-mn section (evaluate 11c)
r^ B Pool -glide section (evaluate 1 to)
r-. C Natural bedfovm absent (skip to Metric 12, Aquatic Life)
11c. In riffles sections, check all that occur below the normal wetted perimeter of the assessment reach -whether or not submerged.
Check at least one box in each now (skip for Size 4 Coastal Plain Streams and Tidal Marsh Streams). Not Present (NP) _
absent, Rare (R) = present but s 10%, Common (C) _> 1040%, Abundant (A)=> 40-70%, Predominant (P) _ > 70%. Cumulative
percentages should not exceed 100% for each assessment reach.
NP R C A P
r� C O l • (-' Bedrock/saprolite
r C:- r' C (, Boulder (256 - 4096 mm)
% ( r {. i Cobble (64 - 256 mm)
C r T (': r` Gravel (2-64 mm)
r C O C w: Sand (.062-2 mm)
r� ('.- (' C C` SIIt/clay (< 0.062 mm)
r", r r r C`. Detritus
G. r r. r. r. Artificial (rip -rap, concrete, etc.)
11 d. rl Yes r) No Are pools filled with sediment? (skip for Sae 4 Coastal Plain streams and Tidal Marsh Streams)

12. Aquatic Life -assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12a. r Yes 6- No Was an in -stream aquatic life assessment performed as described in the User Manual?
If No, select one of the following reasons and skip to Metric 13. G No Water C' Other.
12b. fj Yes C- No Am aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check
all that apply. If No, skip to Metric 13.
I >1 Numbers over columns refer to "individuals" for size 1 and 2 streams and 'taxa" for size 3 and 4 streams.
r- rAdult hogs
r r -Aquatic reptiles
F r Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats)
r r' Beetles (including water pennies)
F r Caddisfly larvae (Trichoptera (Tj)
r- f- Asian clam (Corbicum )
I- r Crustacean(isopod/amphipod/crayfish/shrimp)
r r Damselfly and dragonfly larvae
r- r Diptemns (true flies)
r r Mayfly larvae (Ephemeroptere [E])
r r Megaloptem (alderfly, flshfly, dobsonfly larvae)
f- r Midges/mosquito larvae
r r Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea)
r rMussels/Clams (not Corbicula)
r_ Otherfish
r r Salamandershadpoles
r r Snails
F r Stonefly larvae (Plecoptera [P])
F r Tipulid larvae
r r Worms/leeches
13. Slreamside Area Ground Surface Condition-streamside area metric (skip for Tidal Marsh Streams and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and
upland runoff.
LB RB
MA (V A Little or no alteraflon to water storage capacity over a majority of the streamside area
C B C' B Moderate alteration to water storage capacity over a majority of the streamside area
r C r C Severe alteration to water storage capacity over a majority of the streamside area (examples include: ditches, fill,
soil, compaction, livestock disturbance, buildings, man-made levees, drainage pipes)
14. Slreamside Area Water Storage - streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area.
LB RB
r A C, A Majority of streamside area with depressions able to pond water a 6 inches deep
r B r B Majority of streamside area with depressions able to pond water 3 to 6 inches deep
r C r, C Majority of streamside area with depressions able to pond water <3 inches deep
15. Wetland Presence-streamside area metric (skip for Tidal Marsh Streams)
Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the
normal wetted perimeter of assessment reach.
LB RB
!: Y C Y Are wetlands present in the streamside area?
C`,N r,,N
16. Baseflow Contributors -assessment reach metric (skip for size 4 streams and Tidal Marsh Streams)
Check all contributors within the assessment reach or within view of and draining to the assessment reach.
r A Streams and/or springs Ijudsdictional discharges)
I" B Ponds (include wet detention basins; do not include sediment basins or dry detention basins)
r C Obstruction that passes some flow during low -flow periods within assessment area (beaver dam, bottom -release dam)
r D Evidence of bank seepage or sweating (iron oxidizing bacteria in water indicates seepage)
T7 E Stream bed or bank soil reduced (dig through deposited sediment IF present)
F F None of the above
17. Baseflow Detractors -assessment area metric (skip for Tidal Marsh Streams)
Check all that apply.
r A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation)
F DsWction not passing flow during low flow periods affecting the assessment reach (ex: watertight dam, sediment deposit)
F Urban stream (124% impervious surface for watershed)
C D Evidence that the stream -side area has been modified resulting in accelerated drainage into the assessment reach
r E Assessment reach relocated to valley edge
R F None of the above
18. Shading -assessment reach metric (skip for Tidal Marsh Streams)
Consideraspect Consider 'leafon"condition.
r A Stream shading is appropriate for stream category (may include gaps associated with natural processes)
G B Degraded (example: scattered trees)
r"' C Stream shading is gone or largely absent

19. Buffer Width-streamside area metric (skip for Tidal Marsh Streams)
Consider "vegetated buffer' and "wooded buffer" separately for left bank (LB) and right bank (RB) starting at the tap
of bank out to the first break.
Vegetated Wooded
LB RB LB RB
T A C A {' A r'. A z 100 -feet wide or extends to the edge of the watershed
Q B k-, B r� B f'; B From 50 to < 100 -feet vide
r C r"' C (T C rt C From 30 to <50 -feet wide
r D C D (1 p r D From 1010 <30-feetwide
C E r, E C` E r"; E < 10 -feel wide or no trees
20. Buffer Structure - streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ("Vegetated" Buffer Width).
LB RB
re A ro A Mature forest
C B ("1 B Non -mature woody vegetation or modified vegetation structure
i^•• C r'S C Herbaceous vegetation with or without a strip of trees < 10 feet wide
C D f; D Maintained shrubs
f E ('!E Little or no vegetation
21. Buffer Stressors-streamside area metric (skip for Tidal Marsh Streams)
Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate If listed stressor abuts stream (Abuts), does not abut but
is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet).
If none of the following stressors occurs on either bank, check here and skip to Metric 22: r✓
Abuts < 30 feet 30-50 feel
LB RB LB RB LB RB
r7A r CA CA r CA Row crops
r`, B r''. B ('S B (^. B C B r, B Maintained turf
r" C r; C r"• C C C r C r-- C Pasture (no Ilvestockucommeroial horticulture
r"'' D r D r D C D r, D r^ D Pasture (active livestock use)
22. Stem Density - streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RS) for Metric 19 ('Wooded" Buffer Width).
LB RB
r A G`, A Medium to high stem density
r B (7 B Low stem density
r , C C C No wooded riparian buffer or predominantly herbaceous species or bare ground
23. Continuity of Vegetated Buffer -streamside area metric (skip for Tidal Marsh Streams)
Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 -feet wide.
LB RB
C A P A The total length of buffer breaks is <25 percent.
C B ("Y B The total length of buffer breaks is between 25 and 50 percent.
G C r`., C The total length of buffer breaks is > 50 percent.
24. Vegetative Composition- First 100 feet of streamside area metric (skip for Tidal Marsh Streams)
Evaluate the dominant vegetation whin 100 feet of each bank or to the edge of the watershed (whichever comes first) as 0 contributes
to assessment reach habitat.
LB RB
Ci A C A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native
species, with non-native invasive species absent or sparse.
C•`, B r"• B Vegetation indicates disturbance in tens of species diversity or proportions, but is still largely composed of native
species. This may Include communities ofweedy native species that develop after clearcut6ng or clearing or
communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or
communities missing understory but retaining canopy twos.
T C r•1 C Vegetation is severely disturbed in terms of species diversity or proportions. Mature canopy is absent or communities
with non-native invasive species dominant over a large portion of expected strata or communities composed of planted
stands of non -characteristic species or communities inappropriately composed of a single species or no vegetation.
25. Conductivity -assessment reach metric (skip for all Coastal Plain streams)
25a. C Yes r: No Was a conductivity measurement recorded?
If No, select one of the following reasons. r•` No Water r' Other.
25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter).
(` A <46 (; B 46 to < 67 r"3 C 67 to < 79 C D 79 to < 230 r''. E z 230
Photo 3: SouthlDown Stream Photo 4: North/Up stream

NC SAM Stream Rating Sheet
Accompanies User Manual Version 2.1
Stream Site Name Dan River Steam Station
Stream Category Pb1
Notes of Field Assessment Form (YIN)
Presence of regulatory considerations (YIN)
Additional stream information/supplementary measurements included (YIN)
NG SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Date of Evaluation
Assessor Name/Organization
11-2.16
J.HowardlJ.Cutler
YES
NO
YES
Perennial
NCDWR
Intermittent
USACEI
Function Class Rating Summary
All Streams
(1) Hydrology
HIGH
(2) Baseflow
HIGH
(2) Flood Flow
HIGH
(3) Streamside Area Attenuation
HIGH
(4) Floodplain Access
HIGH
(4) Wooded Riparian Buffer
HIGH
(4) Microtopography
NA
(3) Stream Stability
HIGH
(4) Channel Stability
HIGH
(4) Sediment Transport
LOW
(4) Stream Geomorphology
HIGH
(2) Stream/Intertidal Zone Interaction
NA
(2) Longitudinal Tidal Flow
NA
(2) Tidal Marsh Stream Stability
NA
(3) Tidal Marsh Channel Stability
NA
(3) Tidal Marsh Stream Geomorphology
NA
(1) Water Quality
HIGH
(2) Baseflow
HIGH
(2) Streamside Area Vegetation
HIGH
(3) Upland Pollutant Filtration
HIGH
(3) Thermoregulation
MEDIUM
(2) Indicators of Stressors
NO
(2) Aquatic Life Tolerance
OMITTED
(2) intertidal Zone Filtration
NA
(1) Habitat
HIGH
(2) In -stream Habitat
HIGH
(3) Baseflow
HIGH
(3) Substrate
HIGH
(3) Stream Stability
HIGH
(3) In -stream Habitat
HIGH
(2) Stream -side Habitat
HIGH
(3) Stream -side Habitat
MEDIUM
(3) Thermoregulation
HIGH
(2) Tidal Marsh In -stream Habitat
NA
(3) Flow Restriction
NA
(3) Tidal Marsh Stream Stability
NA
(4) Tidal Marsh Channel Stability
NA
(4) Tidal Marsh Stream Geomorphology
NA
(3) Tidal Marsh In -stream Habitat
NA
(2) Intertidal Zone Habitat
NA
Overall
HIGH
11-2.16
J.HowardlJ.Cutler
YES
NO
YES
Perennial
NCDWR
Intermittent

User Manual version 2.1
INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5 -minute topographic
quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same
property, identify and number all reaches on the attached map, and include a separate form for each reach. See the INC SAM User
Manual for detailed descriptions and explanations of requested information. Record in the "Notes/Sketch" section If any supplementary
measurements were performed. Seethe NC SAM User Manual for examples of additional measurements that maybe relevant.
NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area).
PROJECT! SITE INFORMATION:
1. Project name (if any): Dan River Steam Station 2. Date of evaluation: 11-2-16
3. Applicantiowner name: Duke Energy 4. Assessor namelorganization: J.Howard/J.Cutler
5. County: Rockingham 6. Nearest named water body
7. River Basin: Roanoke on USGS 7.5 -minute quad: Dan River
8. Site coordinates (decimal degrees, at lower end of assessment reach): See GPS Data
STREAM INFORMATION: (depth and width can be approximations)
9. Site number (show on attached map): Stream 1 DIS (DS -7) 10. Length of assessment reach evaluated (feet): 150'
11. Channel depth from bed (in riffle, If present) to top of bank (feet): 34 r Unable to assess channel depth.
12. Channel width at top of bank (feet): 5-6' 13. Is assessment reach a swafnp stream? (7 Yes C No
14. Feature type: #V Perennial flow intermittent flow r Tidal Marsh Stream
STREAM RATING INFORMATION:
15. NC SAM Zone: t" Mountains (M) (R Piedmont (P) r Inner Coastal Plain (1) r. Outer Coastal Plain (0)
16. Estimated geomorphic
valley shape (skip for r a �� C: b
Tidal Marsh Stream): (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope)
17. Watershed size: (skip ( Size 1 (< 0.1 mit) <.° Size 2 (0.1 to < 0.5 mi`) (' Size 30.5 to < 5 mi` z
{ ) Size
for Tidal Marsh Stream)
ADDITIONAL INFORMATION:
18. Were regulatory considerations evaluated? + Yes (7 No If Yes, check all that appy to the assessment area.
r Section 10 water r Classified Trout Waters F Water Supply Watershed ( C` I C. 11 %- 111 (` IV (` V)
F Essential Fish Habitat r Primary Nursery Area r High Quality WaterslOutstanding Resource Waters
F Publicly owned property ( NCDWR riparian buffer rule in effect r- Nutrient Sensitive Waters
F- Anadromaus fish (- 303(d) List f LAMA Area of Environmental Concern (AEC)
F Documented presence of a federal and/or state listed protected species within the assessment area.
List species:
Designated Critical Habitat (list species):
19. Are additional stream information/supplementary measurements included in "Notes/Sketch" section or attached? C Yes No
1. Channel Water- assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams)
t+ A Water throughout assessment reach.
f '` B No flow, water in pools only.
C C No water in assessment reach.
2. Evidence of Flow Restriction - assessment reach metric
i". A At least 10%4 of assessment reach in -stream habitat or riffle -pool sequence is adversely affected by a flow restriction or fill to the
point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or Impounded on Flood or ebb within
the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, Gdal gates).
is B Not
3. Feature Pattern - assessment reach metric
f A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert).
is B Not A.
4. Feature Longitudinal Profile - assessment reach metric
r A Majority of assessment reach has a substantially altered stream profile (examples: channel down -cutting, existing damming,
over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of
these disturbances).
f+ B NotA
5. Signs of Active Instability- assessment reach metric
Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include
active bank failure, active channel down -cutting (head -cut), active widening, and artificial hardening (such as concrete, gabion, rip -rap).
6- A < 10% of channel unstable
r B 10 to 25% of channel unstable
( C > 25% of channel unstable

6. Streamside Area Interaction— streamside area metric
Consider for the Left Bank (LB) and the Right Bank (RS).
LB RB
f-} A r A Little or no evidence of conditions that adversely affect reference interaction
r B r B Moderate evidence of conditions (examples: beans, levees, down -cutting, aggredation, dredging) that adversely affect
reference interaction (examples: limited streamside area access, disruption of food Sows through streamside area,
leaky or Intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching])
f-, C C' C Extensive evidence of conditions that adversely affect reference interaction (little to no Soodplalnfntertidal zone access
[examples: causeways with Floodplain and channel constriction, bulkheads, retaining walls, fill, stream incision,
disruption of flood flows through streamside area] or too much floodplain/Intertidal zone access [examples:
impoundments, Intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a
man-made feature on an interstream divide
7. Water Quality Stressors — assessment reach/intertidal zone metric
Check all that apply.
I- A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam)
r B Excessive sedimentation (burying of stream features or inter idal zone)
r C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem
r Odor (not including natural sulfide odors)
r E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in the "Notes/Sketch"
section.
F' F Livestock with access to stream or intertidal zone
r G Excessive algae in stream or intertidal zone
r H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc.)
rI Other: (explain in "Notes/Sketch' section)
P J Little to no stressors
S. Recent Weather—watershed metric
For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a
drought.
r, A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours
[, B Drought conditions and rainfall exceeding 1 inch within the last 48 hours
r No drought conditions
9 Large or Dangerous Stream —assessment reach metric
r Yes i , No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition).
10. Natural In -stream Habitat Types— assessment reach metric
10a. (',1 Yes r No Degraded In -stream habitat over majority of the assessment reach (examples of stressors include excessive
sedimentation, mining, excavation, in -stream hardening (for example, rip -rap], recent dredging, and snagging)
(evaluate for size 4 Coastal Plain streams only, then skip to Metric 12)
1 Ob. Check all that occur (occurs 'd> 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams)
r A Multiple aquatic macrophytes and aquatic mosses W. r F 5% oysters or other natural hard bottoms
(include liverworts, lichens, and algal mats) 1= m r G Submerged aquatic vegetation
i✓ B Multiple sticks and/or leaf packs and/or emergent o in r H Low-tlde refugia (pools)
vegetation o r 1 Sand bottom
r C Multiple snags and logs (including lap trees) c n r J 5% vertical bank along the marsh
C D 5% undercut banks and/or root mats and/or mots 02 r K Little or no habitat
in banks extend to the normal wetted perimeter
r E Little or no habitat
""'"""""""'""""""`REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS "'"'""""""^""^`^""'
11. Bedform and Substrate—assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
11a. r Yes C No Is assessment reach in a natural sand -bed stream? (skip for Coastal Plain streams)
11 It. Sedform evaluated. Check the appropriate box(es).
r A Rifill section (evaluate 1 to)
FF B Poo4lide section (evaluate 11d)
I- C Nature] bedforn absent (skip to Metric 12, Aquatic Life)
lie. In riffles sections, check all that occur below the normal wetted perimeter of the assessment reach —whether or not submerged.
Check at least one box in each row (skip for Size 4 Coastal Plain Streams and Tidal Marsh Streams). Not Preserd (NP) _
absent, Rare (R) = present but 510%, Common (C) _> 10-40%, Abundant (A) _> 40-70%, Predominant (P) _> 70%. Cumulative
percentages should not exceed 100% for each assessment reach.
NP R C A P
fr r r r Bedrock/saprolite
r r r C'. Boulder (256 — 4096 mm)
C I- r C' r Cobble (64 — 256 mm)
r r r r C, Gravel (2-64 mm)
C r r r C` Sand (.062 — 2 mm)
C' {' C r r Silt1clay (- 0.062 mm)
r r r Detritus
r r r r, C Artificial (dip -rap, concrete, etc.)
111. r Yes (e' No Are pools filed with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)

12. Aquatic Life— assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12a. Ce Yes (`fi No Was an in -stream aquatic life assessment performed as described In the User Manual?
If No, select one of the following masons and skip to Metric 13. (-1 No Water C Other.
12b.%. Yes C No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check
all that apply. If No, skip to Mebic 13.
1 11 Numbers over columns refer to "individuals" for size 1 and 2 streams and "taxa -for size 3 and 4 streams.
r 157 Adult frogs
r r Aquatic reptiles
F r Aquatic macrophytes and aquatic mosses (Include liverworts, lichens, and algal mats)
r r Beetles (including water pennies)
r r Caddisf y larvae (Trichoptera (T])
r r Asian clam (Corbicula )
F r Crustacean (isopod/amphipod/crayfish/shrimp)
r r Damselfly and dragonfly larvae
F r Dipterans (true flies)
r r Mayfly larvae (Ephememptera [E])
r r Megaloptera (alderfly, fishfly, dobsonfly larvae)
F r Midges/mosquito larvae
r r Mosquito fish (Gambusia) or mud minnows (Umbra pygmaes)
F rMussels/Clams (not Corbicu/a)
r r Other fish
r r Salamanders/tadpoles
r r Snails
r r Stonefly larvae (Plecoptera [P])
r r Tipulid larvae
F r Worms/leeches
13. Streamside Area Ground Surface Condition — streamside area metric (skip for Tidal Marsh Streams and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and
upland runoff.
LB RS
(; A (1 A Little or no alteration to water storage capacity over a majority of the streamside area
B ('! B Moderate alteration to water storage capacity over a majority of the streamside area
C (" C Severe alteration to water storage capacity over a majority of the streamside area (examples include: ditches, fill,
sail, compaction, livestock disturbance, buildings, man-made levees, drainage pipes)
14. Streamside Area Water Storage — streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area.
LB RS
r, A C A Majority of streamside area with depressions able to pond ureter> 6 inches deep
(, B (-S Majority of streamside area with depressors able to pond water 3 to 6 inches deep
t~•- C C, C Majority of streamside area with depressions able to pond water <3 inches deep
15. Wetland Presence — streamside area metric (skip for Tidal Marsh Streams)
Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the
normal warted perimeter of assessment reach.
LB RS
('_ Y C Y Are wetlands present in the streamside area?
r, IN ('N
16. Baseflow Contributors— assessment reach metric (skip for size 4 streams and Tidal Marsh Streams)
Check all contributors within the assessment reach or within view of and draining to the assessment reach.
r A Streams and/or springs Qudsdictional discharges)
F B Ponds (include wet detention basins; do not include sediment basins or dry detention basins)
r Obstruction that passes some flow during low -flow periods within assessment area (beaver dam, bottom -release dam)
P D Evidence of bank seepage or sweating (iron oxidizing bacteria in water indicates seepage)
I+ E Stream bed or bank soil reduced (dig through deposited sediment if present)
r F None of the above
17. Baseflow Detractors — assessment area metric (skip for Tidal Marsh Streams)
Check all that apply.
r A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation)
r B Obstruction not passing flow during low flow periods affecting the assessment reach (ex: watertight dam, sediment deposit)
r C Urban stream (124% impervious surface for watershed)
r D Evidence that the stream -side area has been modified msulfing in accelerated drainage into the assessment reach
r E Assessment reach relocated to valley edge
IF F None of the above
18. Shading —assessment reach metric (skip for Tidal Marsh Streams)
Consideraspect. Consider "leafbn"condition,
C A Stream shading is appropriate for stream category (may Include gaps associated with natural processes)
r B Degraded (example: scattered trees)
r C Stream shading is gone or largely absent

19. Buffer Width -streamside area metric (skip for Tidal Marsh Streams)
Consider"vegetated buffer" and "wooded buffer" separately for left bank (LB) and right bank (R B) starting at the top
of bank out to the first break.
Vegetated Wooded
LB RS LB RB
( A r, A (` A C. A a 100 -feet wide or extends to the edge of the watershed
rB r B (- B (F'. B From 50 to < 100 -feet wide
('i C ('•• C (7 C C From 30 to <50 -feet wide
(`- D C D r ] D r; D From 10 to < 30 -feet wide
r`• E [7 E 4r E r'7 E < 10 -feet wide or no trees
20. Buffer Structure- streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ('Vegetated" Buffer Width).
LB RB
(. A (_ A Mature forest
r` B r B Non -mature woody vegetation or modified vegetation structure
r- C . r`, C Herbaceous vegetation with or without a strip of trees < 10 feet wide
r" - D C D Maintained shrubs
(-S E r E Little or no vegetation
21. Buffer Stressors - streamside area metric (skip for Tidal Marsh Streams)
Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but
is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet).
If none of the following stressors occurs on either bank, check here and skip to Metric 22: R
Abuts < 30 feet 30-50 feet
LB RB LB RB LB RS
C A (" A r A r7 A ("5 A r1 A Row crops
r` B (^ B ('. B r'. B r': B r, B Maintained turf
r:. C r'' C {"' C (7 C r? C ('S C Pasture (no Ilvestockucommemial horticulture
r: D r D Q D r'= D r-' D r, D Pasture (active livestock use)
22. Stem Density - streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ("Wooded" Buffer Width).
LB RS
C A (t,, A Medium to high stem density
f: B r, B Low stem density
r` C r't C No wooded riparian buffer or predominantly herbaceous species or bare ground
23. Continuity of Vegetated Buffer -streamside area metric (skip for Tidal Marsh Streams)
Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 -feet wide.
LB RS
r, A r.` A The total length of buffer breaks is < 25 percent.
rJ B r'_ B The total length of buffer breaks is between 25 and 50 percent.
r C r C The total length of buffer breaks is > 50 percent.
24. Vegetative Composition - First 100 feet of streamside area metric (skip for Tidal Marsh Streams)
Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contributes
to assessment reach habitat
LB RS
r, A C, A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native
species, with non-native invasive species absent or sparse.
r•'S B r.'. B Vegetation indicates disturbance in terms of species diversity or proportions, but Is stili largely composed of native
species. This may include communities of weedy native species that develop after clear -cutting or clearing or
communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or
communities missing understary but retaining canopy trees.
(1, C i"- C Vegetation is severely disturbed in terms of species diversity or proportions. Mature canopy is absent orcommuni6es
with non-native invasive species dominant over a large portion of expected strata or communities composed of planted
stands of non -characteristic species or communNes inappropriately composed of a single species or no vegetation.
25. Conductivity - assessment reach metric (skip for all Coastal Plain streams)
25a. rl Yes (d No Was a conductivity measurement recorded?
If No, select one of the following reasons. r`, No Water r Other. No meter
25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter).
r',- A <46 r; B 46 to < 67 C C 67 to < 79 r D 79 to < 230 r5 E >- 230
Photo 6: South/Down Stream Photo 7: North/Up Stream

NC SAM Stream Rating Sheet
Accompanies User Manual Version 2.1
Stream Site Name Dan River Steam Station Date of Evaluation
Stream Category Pbl Assessor NamelOrganization
Notes of Field Assessment Form (YIN)
Presence of regulatory considerations (YIN)
Additional stream inform ationlsupplementary measurements included (YM)
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Function Class Ratin
11-2-16
J.HowardlJ.Cutler
YES
NO
YES
Perennial
USACEI NCDWR
All Streams Intermittent
(1) Hydrology
HIGH
(2) Baseflow
HIGH
(2) Flood Flow
HIGH
(3) Streamside Area Attenuation
HIGH
(4) Floodplain Access
HIGH
(4) Wooded Riparian Buffer
MEDIUM
(4) Microtopography
NA
(3) Stream Stability
HIGH
(4) Channel Stability
HIGH
(4) Sediment Transport
HIGH
(4) Stream Geomorphology
HIGH
(2) Streamllntertidal Zone Interaction
NA
(2) Longitudinal Tidal Flow
NA
(2) Tidal Marsh Stream Stability
NA
(3) Tidal Marsh Channel Stability
NA
(3) Tidal Marsh Stream Geomorphology
NA
(1) Water Quality
MEDIUM
(2) Baseflow
HIGH
(2) Streamside Area Vegetation
HIGH
(3) Upland Pollutant Filtration
HIGH
(3) Thermoregulation
MEDIUM
(2) Indicators of Stressors
NO
(2) Aquatic Life Tolerance
LOW
(2) Intertidal Zone Filtration
NA
(1) Habitat
HIGH
(2) In -stream Habitat
HIGH
(3) Baseflow
HIGH
(3) Substrate
HIGH
(3) Stream Stability
HIGH
(3) In -stream Habitat
HIGH
(2) Stream -side Habitat
HIGH
(3) Stream -side Habitat
HIGH
(3) Thermoregulation
HIGH
(2) Tidal Marsh In -stream Habitat
NA
(3) Flow Restriction
NA
(3) Tidal Marsh Stream Stability
NA
(4) Tidal Marsh Channel Stability
NA
(4) Tidal Marsh Stream Geomorphology
NA
(3) Tidal Marsh In -stream Habitat
NA
(2) Intertidal Zone Habitat
NA
Overall
HIGH

user manuaa version [.7
INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5 -minute topographic
quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same
property, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User
Manual for detailed descriptions and explanations of requested information. Record in the "Notes/Sketch" section if any supplementary
measurements were per€ormed. See the NC SAM User Manual for examples of additional measurements that may be relevant.
NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area).
PROJECT/ SITE INFORMATION:
1. Project name (if any): Dan River Steam Station 2. Date of evaluation: 11-2-16
3. Applicantlowner name: Duke Energy 4. Assessor name/organization: J.HowardlJ.Cutier
5. County: Rockingham 6. Nearest named water body
7. River Basin: Roanoke on USGS 7.5 -minute quad: Dan River
8. Site coordinates (decimal degrees, at lower end of assessment reach): See GPS Data
STREAM INFORMATION: (depth and width can be approximations)
9. Site number (show on attached map): Stream 1 R/W (DS -16) 10. Length of assessment reach evaluated (feet): 70-80'
11. Channel depth from bed (in riffle, if present) to top of bank (feet): 1-2' I- Unable to assess channel depth.
12. Channel width at top of bank (feet): 2' 13. Is assessment reach a swamp stream? C' Yes r No
14. Feature type: iT Perennial flow C Intermittent flow t" Tidal Marsh Stream
STREAM RATING INFORMATION:
15. NC SAM Zone: C Mountains (M) t+ Piedmont (P) t ` Inner Coastal Plain (1) r Outer Coastal Plain (0)
16. Estimated geomorphic
valley shape (skip for C a C b
Tidal Marsh Stream): (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope)
17. Watershed size: (skip is Size 1 (< 0.1 mi`) r Size 2 (0.1 to < 0.5 mi`) " Size 3 (0.5 to < 5 mi`) r Size 4 (>> 5 mi`)
for Tidal Marsh Stream)
ADDITIONAL INFORMATION:
18. Were regulatory considerations evaluated? (- Yes (" No If Yes, check all that appy to the assessment area.
F Section 10 water r Classified Trout Waters F Water Supply Watershed ( (7 1 ('' II (- III rl IV V)
F.. Essential Fish Habitat r Primary Nursery Area I- High Quality Waters/Outstanding Resource Waters
F Publicly owned property F NCDWR riparian buffer rule in effect i- Nutrient Sensitive Waters
F Anadromous fish F 303(d) Ust r- CAMA Area of Environmental Concern (AEC)
["" Documented presence of a federal and/or state listed protected species within the assessment area.
List species:
F_ Designated Critical Habitat (list species):
19. Are additional stream informationlsunnlpmpntanr maaciima rte -1 wd,+ ,„
1. Channel Water-- assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams)
+` A Water throughout assessment reach.
B No flow, water in pools only.
(7 C No water in assessment reach.
2. Evidence of Flow Restriction -assessment reach metric -
C A At least 10% of assessment reach in -stream habitat cr riffle -pool sequence is adversely affected by a flow restriction or fill to the
point of obstructing flow or a channel choked with aquatic macrophytes ar ponded waterer impounded on flood or ebb within
the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates).
B Not A
3. Feature Pattern - assessment reach metric
A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert).
1Z B Not A.
4. Feature Longitudinal Profile - assessment reach metric
r A Majority of assessment reach has a substantially altered stream profile (examples: channel down -cutting, existing damming,
over widening, active aggradatien, dredging, and excavation where appropriate channel profile has not reformed from any of
these disturbances).
(- B NotA
5. Signs of Active Instability -assessment reach metric
Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include
active bank failure, active channel down -cutting (head -cut), active widening, and artificial hardening (such as concrete, gabion, rip -rap).
I A < 10% of channel unstable
{' B 10 to 25% of channel unstable
(` C a 25% of channel unstable
6. Streamside Area Interaction - streamside area metric
Consider for the Left Bank (LB) and the Right Bank (RB).
LB RB
C A A Little or no evidence of conditlons that adversely affect reference interaction
r B (-6 Moderate evidence of conditions (examples: berms, levees, down -cutting, aggradatien, dredging) that adversely affect
reference interaction (examples: limited streamside area access, disruption of flood flows through streamside area,
leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching])
f- C r C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain/intertidal zone access
[examples: causeways with floodplain and channel constriction, bulkheads, retaining walls, fill, stream incision,
disruption of flood flows through streamside area] or too much floodplainlintertidaI zone access [examples:
impoundments, intensive mosquito ditching]) or fleodplainlintertidal zone unnaturally absent or assessment reach is a
man-made feature on an interstream divide
7. Water Quality Stressors - assessment reach/intertidal zone metric
Check all that apply.

F_ A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam)
r B Excessive sedimentation (burying of stream features or intertidal zone)
r C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem
r D Odor (not including natural sulfide odors)
F_ E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in the "Notes/Sketch"
section.
r F Livestock with access to stream or intertidal zone
r G Excessive algae in stream or intertidal zone
i+• H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc.)
r I Other. (explain in "Notes/Sketch' section)
17 J Little to no stressors
B. Recent Weather -watershed metric
ForSae 1 ort streams, D1 drought or higher is considered a drought; forSae 3 or 4 streams, D2 droughtor higher is considered a
drought.
r A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours
r B Drought conditions and rainfall exceeding 1 Inch within the last 48 hours
ITC No drought conditions
9 Large or Dangerous Stream - assessment reach metric
r Yes C' No Is stream Is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition).
10. Natural In -stream Habitat Types -assessment reach metric
10a.%Yes GNo Degraded in -stream habitat over majority of the assessment reach (examples of stressors include excessive
sedimentation, mining, excavation, in -stream hardening [for example, rip -rap], recent dredging, and snagging)
(evaluate for size 4 Coastal Plain streams only, then skip to Metric 12)
10b. Check all that occur (occurs '4> 5% coverage of assessment reach) (skip for Sae 4 Coastal Plain streams)
r A Multiple aquatic macrophytes and aquatic mosses - r F 5% oysters or other natural hard bottoms
(include Ilverv.orts, lichens, and algal mats)F m r G Submerged aquatic vegetation
(" B Multiple sticks and/or leaf packs and/or emergent 6 2 r H LowAde refugia (pools)
vegetation t o r I Sand bottom
r C Multiple snags and logs (including lap trees)12
r J 5% vertical bank along the marsh
I- D 5% undercut banks and/or root mats and/or mots U 2 r K Little or no habitat
in banks extend to the nonnal wetted perimeter
17 E Little or no habitat
—REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS""""""'•""'•'""""
11. Bedform and Substrate -assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
11a. r Yes C'' No Is assessment reach in a natural sand -bed stream? (skip for Coastal Plain streams)
11 b. Bedfortn evaluated. Check the appropriate box(es).
r- Riffle -run section (evaluate 11c)
F B Pool -glide section (evaluate 11d)
r C Natural badfoan absent (skip to Metric 12, Aquatic Life)
11c. In riffles sections, check all that occur below the normal wetted perimeter of the assessment reach -whether or not submerged.
Check at least one box in each row (skip for Size 4 Coastal Plain Streams and Tidal Marsh Streams). Not Present(NP) _
absent, Ram (R) = present but 510%, Common (C) _> 10-40%, Abundant (A) _> 40-70%, Predominant (P) _> 70%. Cumulative
percentages should not exceed 100% for each assessment reach.
NP R C A P
C r r r BedrocWsaprolfte
G r G r f Boulder (256 - 4096 mm)
r r r t- r Cobble (64 - 256 mm)
r r r t" r Gravel (2-64 mm)
r r r r C Sand (.062-2 mm)
i" C" r {" - r, Sificlay (10.062 mm)
is fi (7 r r Detritus
r r r {": C Artificial (rip -rap, concrete, etc.)
11 d. rC Yes { No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)

12. Aquatic Life — assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12a. r Yes C No Was an in -stream aquatic life assessment performed as described in the User Manual?
If No, select one of the following reasons and skip to Metric 13. C} No Water r Other.
121h. r Yes C No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check
ali that apply. If No, skip to Metric 13.
1 >1 Numbers over columns refer to'individuaW for sae 1 and 2 streams and "taxa' for size 3 and 4 streams.
r 17- Adult frogs
r r Aquatic reptiles
r r Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats)
r r Beetles (including water pennies)
r rCaddisfylarvae (Trichoptera m)
r r Asian clam (CorbicWa )
r r Crustacean(isopod/amphipod/crayfish/shrimp)
r r Damselfly and dragonfly larvae
r r Dipterans (true files)
r r Mayfly larvae (Ephememptera ]E])
F r Megaloptem (alderfly, flshfly, dobsonfly larvae)
r r Midges/mosquito larvae
r r Mosquito fish (Gambusia) or mud minnows (Umbra pygmaeo)
I" rMussels/Clams (not Corbicula)
r r Other fish
r r Salamanders/tadpoles
r r Snails
r r Stonefly larvae (Plecoptem [P])
F r Tipulid larvae
r r Worms/leeches
13. Streamside Area Ground Surface Condition — streamside area metric (skip for Tfdal Marsh Streams and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and
upland runoff.
LB RB
( A 6- A Little or no alteration to water storage capacity over a majority of the streamside area
r B (,7 B Moderate alteration to water storage capacity over a majority of the streamside area
r C C: C Severe alteration to water storage capacity over a majority of the streamslde area (examples include: ditches, fill,
soil, compaction, livestock disturbance, buildings, man-made levees, drainage pipes)
14. Streamside Area Water Storage —streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area.
LB RB
r A r, A Majority of streamside area with depressions able to pond water a 6 inches deep
r B (' B Majority of streamside area with depressions able to pond water 3 to 6Inches deep
r C C, C Majority of streamside area with depressions able to pond water < 3 inches deep
15. Wetland Presence — streamside area metric (skip for Tidal Marsh Streams)
Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the
normal wetted perimeter of assessment reach.
LB RS
{J: Y C• Y Are wetlands present in the streamside area?
r N (-- N
16. Baseflow Contributors —assessment reach metric (skip for size 4 streams and Tidal Marsh Streams)
Check all contributors within the assessment reach or within view of and draining to the assessment reach.
r A Streams and/or springs Qudsdictlonal discharges)
r B Ponds (include wet detention basins; do not include sediment basins or dry detention basins)
r C Obstruction that passes some Flow during low -flow periods within assessment area (beaver dam, bottom -release dam)
f✓ D Evidence of bank seepage or swearing (iron oxidizing bacteria in water Indicates seepage)
f~ E Stream bed or bank soil reduced (dig through deposited sediment ff present)
r F None of the above
17. Baseflow Detractors— assessment area metric(skip for Tidal Marsh Streams)
Check all that apply.
r A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump Installation)
r B Obstruction not passing flow during low flow periods affecting the assessment reach (ex: watertight dam, sediment deposit)
I— C Urban stream (z 24% impervious surface forwatershed)
r D Evidence that the stream -side area has been modified resulting in accelerated drainage into the assessment reach
r E Assessment reach relocated to valley edge
R F None of the above
18. Shading —assessment reach metric (skip for Tidal Marsh Streams)
Conskleraspect Consider"leafon"condition.
r A Stream shading is appropriate for stream category (may include gaps associated with natural processes)
C B Degraded (example: scattered trees)
C`C Stream shading is gone or largely absent

19. Buffer Width —streamside area metric (skip for Tidal Marsh Streams)
Consider "vegetated buffer" and "wooded buffer" separately for left bank (LB) and right bank (RB) starting at the lop
of bank out to the first break.
Vegetated Wooded
LB RS LB RB
C A C•1 A r A r, A 2 100 -feet wide or extends to the edge of the watershed
(:F B r B C B r" B From 50 to < 100 -feet wide
r1 C C C r? C C, C From 30 to < 50 -feet wide
r D r^ D r D rS D From 10 to < 30 -feet wide
r,? E r_, E r'_. E (,7 E < 10 -feet wide or no trees
20. Buffer Structure— streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RS) for Metric 19 ('Vegetated" Buffer Width).
LB RB
r5A rA Mature forest
r B (V B Non -mature woody vegetation or modified vegetation structure
(7 C r`- C Herbaceous vegetation with or without a strip of trees < 10 feet wide
r D r} D Maintained shrubs
r1 E r'_: E Little or no vegetation
21. Buffer Stressors— streamside area metric (skip for Tidal Marsh Streams)
Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate If listed stressor abuts stream (Abuts), does not abut but
is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet).
If none of the following stressors occurs on either bank, check here and skip to Metric 22: f+
Abuts < 30 feet 30.50 feet
LB RB LB RB LB RB
r'A flA r'A r":A r'.A r'A Row crops
C B ir B r? B r, B r^.: B r; B Maintained turf
r C r C i- C r), C r'.. C r`, C Pasture (no livestock)/commercial horticulture
ri D r D r` D r D r D r: D Pasture (active livestock use)
22. Stem Density—streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RS) for Metric 19 ("Wooded" Buffer Width).
LB RB
r` A r A Medium to high stem density
r B r; B Low stem density
r: C (Z C No wooded riparian buffer or predominantly herbaceous species or bare ground
23. Continuity of Vegetated Buffer —streamside area metric (skip for Tidal Marsh Streams)
Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetalion> 10 -feet wide.
LB RB
r•" A r3 A The total length of buffer breaks is < 25 percent
r B (7 B The total length of buffer breaks is between 25 and 50 percent
r'- C r" C The total length of buffer breaks is > 50 percent.
24. Vegetative Composition — First 100 feet of streamside area metric (skip for Tidal Marsh Streams)
Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contributes
to assessment reach habitat.
LB RB
C A r A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native
species, with non-native invasive species absent or sparse.
IT B r. B Vegetation indicates disturbance in tens of species diversity or proportions, but Is still largely composed of nerve
species. This may include communities ofweedy native species that develop after clear -cutting or clearing or
communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or
communities missing understory but retaining canopy trees.
r C r C Vegetation is severely disturbed in terms of species diversity or proporilons. Mature canopy Is absent or communities
with non-native invasive species dominant over a large porton of expected strata or communities composed of planted
stands of non -characteristic species or communities inappropriately composed of a single species or no vegetation.
25. Conductivity—assessment reach metric (skip for all Coastal Plain streams)
25a. r'Yes (-No Was a conductivity measurement recorded?
If No, select one of the following reasons. r No Water r Other. too shallow
25b. Check the box corresponding to the conducrv'dy measurement (units of microsiemens per centimeter).
C A <46 r? B 46 to < 67 (` C 67 to < 79 C... D 79 to < 230 r'- E z 230
With in Powerline easment Photo 5: NorUVupstream

NC SAM Stream Rating Sheet
Accompanies User Manual Version 2.1
Stream Site Name Dan River Stearn Station Date of Evaluation 11-2-16
Stream Category Pal Assessor Name/Organization J. Howard/J.Cutler
Notes of Field Assessment Form (YIN)
Presence of regulatory considerations (YIN)
Additional stream inform ationlsupplementary measurements included (YIN)
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Function Class Ratin
YES
NO
YES
Perennial
USACEI NCDWR
All Streams Intermittent
(1) Hydrology
HIGH
(2) Baseflow
HIGH
(2) Flood Flow
HIGH
(3) Streamside Area Attenuation
HIGH
(4) Floodplain Access
HIGH
(4) Wooded Riparian Buffer
LOW
(4) Microtopography
HIGH
(3) Stream Stability
HIGH
(4) Channel Stability
HIGH
(4) Sediment Transport
HIGH
(4) Stream Geomorphology
HIGH
(2) Stream/Intertidal Zone Interaction
NA
(2) Longitudinal Tidal Flow
NA
(2) Tidal Marsh Stream Stability
NA
(3) Tidal Marsh Channel Stability
NA
(3) Tidal Marsh Stream Geomorphology
NA
(1) Water Quality
LOW
(2) Baseflow
HIGH
(2) Streamside Area Vegetation
MEDIUM
(3) Upland Pollutant Filtration
HIGH
(3) Thermoregulation
LOW
(2)Indicators of Stressors
NO
(2) Aquatic Life Tolerance
LOW
(2) Intertidal Zone Filtration
NA
(1) Habitat
LOW
(2) In -stream Habitat
MEDIUM
(3) Baseftow
HIGH
(3) Substrate
HIGH
(3) Stream Stability
HIGH
(3) In -stream Habitat
LOW
(2) Stream -side Habitat
LOW
(3) Stream -side Habitat
LOW
(3) Thermoregulation
LOW
(2) Tidal Marsh In -stream Habitat
NA
(3) Flow Restriction
NA
(3) Tidal Marsh Stream Stability
NA
(4) Tidal Marsh Channel Stability
NA
(4) Tidal Marsh Stream Geomorphology
NA
(3) Tidal Marsh In -stream Habitat
NA
(2) Intertidal Zone Habitat
NA
Overall
LOW

user manual version z.i
INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USES 7.5 -minute topographic
quadrangle, and circle the location of the stream reach under evaluation. If multi& stream reaches will be evaluated on the same
property, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User
Manual for detailed descriptions and explanations of requested information. Record in the "Notes/Sketch" section if any supplementary
measurements were performed. Seethe NC SAM User Manual for examples of additional measurements that maybe relevant.
NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area).
PROJECT 1 SITE INFORMATION:
1. Project name (if any): Dan River Steam Station
2. Date of evaluation: 11-2-16
3. Applicantlowner name: Duke Energy
4. Assessor namelorganization: J.HowardlJ.Cutler
5. County: Rockingham
6. Nearest named water body
7. River Basin: Roanoke
on USGS 7.5 -minute quad: Dan River
8. Site coordinates (decimal degrees, at lower end of assessment reach): See GPS Data
STREAM INFORMATION: (depth and width can be approximations)
9. Site number (show on attached map): Stream 6 (DSA -4)
10, Length of assessment reach evaluated (feet): 100'
11. Channel depth from bed (in riffle, if present) to top of bank (feet):
1-3' r Unable to assess channel depth.
12. Channel width at top of bank (feet): 2-4'
13. Is assessment reach a swamp stream? r Yes �- No
14. Feature type: Perennial flow r, Intermittent flow
" Tidal Marsh Stream
STREAM RATING INFORMATION:
15. NC SAM Zone:
16. Estimated geomorphic
valley shape (skip for
Tidal Marsh Stream):
17. Watershed size: (skip
for Tidal Marsh Stream)
ADDITIONAL INFORMATION:
r Mountains (M) f Piedmont (P)
� 1
(more sinuous stream, flatter valley slope)
C. Size I (< 0.1 mi`) r Size 2 (0.1 to < 0.5 mi`)
(7 Inner Coastal Plain (I) 1 Outer Coastal Plain (0)
(7-� b
(less sinuous stream, steeper valley slope)
("' Size 3 (0.5 to < 5 mi`) r Size 4 (2: 5 mi')
18. Were regulatory considerations evaluated? 1+' Yes (' No If Yes, check all that appy to the assessment area.
f— Section 10 water r Classified Trout Waters f— Water Supply Watershed ( (' I (- II (- , III (--IV r, V)
F Essential Fish Habitat r Primary Nursery Area r High Quality Waters/Outstanding Resource Waters
F_ Publicly owned property r NCDWR riparian buffer rule in effect r Nutrient Sensitive Waters
r-` Anadromous fish f 303(d) List 1`7 CAMA Area of Environmental Concern (AEC)
F Documented presence of a federal and/or state listed protected species within the assessment area.
List species:
r Designated Critical Habitat (list species):
19. Are additional stream informationlsupp{ementary measurements included in "Notes/Sketch" section or attached? •. Yes r, No
1. Channel Water— assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams)
t A Water throughout assessment reach.
(= B No Flaw, water in pools only.
i C No water in assessment reach.
2. Evidence of Flow Restriction — assessment reach metric
C A At least 10% of assessment reach in -stream habitat or riffie-pool sequence is adversely affected by a flow restriction or fill to the
point of obstructing flow or a channel choked with aquatic maerophytes or ponded water or impounded on flood or ebb within
the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, fidal gates).
(# B Not A
3. Feature Pattern — assessment reach metric
f- A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert).
(+ B Not A.
4. Feature Longitudinal Profile —assessment reach metric
r A Majority of assessment reach has a substantially altered stream profile (examples: channel down -cutting, existing damming,
over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of
these disturbances).
(± B Not A
5. Signs of Active Instability —assessment reach metric
Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include
active bank failure, active channel down -cutting (head -cut), active widening, and artificial hardening (such as concrete, gabion, rip -rap).
t'- A < 10% of channel unstable
r B 10 to 25% of channel unstable
r C > 25% of channel unstable

6. Streamside Area Interaction- streamside area metric
Consider for the Left Bank (LB) and the Right Bank (RB).
LB RB
( A 4"-A Little or no evidence of conditions that adversely affect reference interaction
r B C B Moderate evidence of conditions (examples: berms, levees, dawn -cubing, aggradation, dredging) that adversely affect
reference interaction (examples: limited streamside area access, disruption of Flood flows through streamside area,
leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching])
{' C (! C Extensive evidence of conditions that adversely affect reference irdemctien (little to no floodplainAntertidal zone access
[examples: causeways with floodplain and channel constriction, bulkheads, retaining walls, fill, stream incision,
disruption of flood flows through streamside area] or too much tbodplainfntedidal zone access [examples:
Impoundments, intensive mosquito ditching]) or floodplain/Intertidal zone unnaturally absent or assessment reach is a
man-made feature on an interstream divide
7. Water Quality Stressors- assessment reach/intertidal zone metric
Check all that apply.
f- A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam)
F B Excess ve sedimentation (burying of stream features or intertidal zone)
F C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem
r D Odor (not Including natural sulfide odors)
F E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in the "Notes/Sketch"
section.
I- Livestock with access to stream or intertidal zone
r Excessive algae in stream or intertidal zone
r H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc.)
L✓ I Other. Tims/othertrash (explain In"Notes/Sketch"section)
r J Little to no stressors
8. Recent Weather -watershed metric
For Size 1 or 2 streams, Of drought or higher is considered a drought; for Sae 3 or 4 streams, 02 drought or higher is considered a
drought.
[? A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours
(; B Drought conditions and rainfall exceeding 1 inch within the last 48 hours
k,, C No drought conditions
9 Large or Dangerous Stream- assessment reach metric
(' Yes 1, No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition).
10. Natural In -stream Habitat Types- assessment reach metric
10a.(': Yes (7 No Degraded in -stream habitat over majority of the assessment reach (examples of stressors include excessive
sedimentation, mining, excavation, in -stream hardening [for example, rip -rap], recent dredging, and snagging)
(evaluate for size 4 Coastal Plain streams only, then skip to Metric 12)
10b. Check all that occur (occurs if> 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams)
r A Multiple aquatic macrophytes and aquatic mosses m m r F 5% oysters or other natural hard bottoms
(include liverworts, lichens, and algal mats) F m r G Submerged aquatic vegetation
[+ B Multiple sticks and/or leaf packs and/or emergent o 9 c r H Low -tide refugia (pools)
vegetation Eno r I Sand bottom
r C Multiple snags and logs (including lap trees) m r J 5% vertical bank along the marsh
r D 5% undercut banks and/or root mats and/or roots o r K Little or no habitat
in banks extend to the normal wetted perimeter
r E Little or no habitat
REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS""""""""""""""•
11. Bedform and Substrate -assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
11a. { Yes (- No Is assessment reach in a natural sand -bed stream? (skip for Coastal Plain streams)
11 b. Bedfonn evaluated. Check the appropriate box(es).
I'+ A Rfifle-run section (evaluate 11c)
T- B Pool -glide section (evaluate 11 d)
r C Natural bedfonn absent (skip to Metric 12, Aquatic Life)
11c. In riffles sections, check all that occur below the normal wetted perimeter of the assessment reach -whether or not submerged.
Check at least one box in each row (skip for Size 4 Coastal Plain Streams and Tidal Marsh Streams). Not Present (NP) _
absent, Rare (R) = present but 510%, Common (C) _> 10-40%, Abundant (A) _> 40-70%, Predominant (P) _> 70%. Cumulative
percentages should not exceed 100% for each assessment reach.
NP R C A P
0' C C ("'- (? Bedrock/saprolite
r (':, r f- () Boulder (256 - 4096 mm)
r 1- (i r (' Cobble (64 - 256 mm)
r ( ("-- (', r Gravel (2-64 mm)
r, r C r r Sand (.062-2 mm)
r, t7 r. (*' L� Sllt/clay(< 6.062 mm)
C C (Z r r Detritus
r. C r,, f-! ("- Artificial (np-rap, concrete, etc.)
1ld. r? Yes O No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)

12. Aquatic Life -assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams)
12a. t'. Yes r No Was an in -stream aquatic life assessment performed as described in the User Manual?
If No, select one of the following reasons and skip to Metric 13. r No Water C' Other.
12b. ('1 Yes 0' No Are aquatic organisms present In the assessment reach (look in riffles, pools, then snags)? If Yes, check
all that apply. If No, skip to Metric 13.
1 11 Numbers over columns refer to "individuals" for size 1 and 2 streams and "taxa°for size 3 and 4 streams.
r r" Adult frogs
6 r- Aquatic reptiles
f" (- Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats)
r r- Beetles (including water pennies)
F r Caddisfly larvae (Trichoptem (T])
r- r Asian clam (Corbicu/a )
F F Crustacean (isopod/amphipod/crayfish/shrimp)
r- r- Damselfly and dragonfly larvae
C C Dipterans (true flies)
r- r- Mayfly larvae (Ephemeroptem [E])
F r Megabptera (elderly, fishFly, dobsonfly larvae)
r, r Midges/mosquito larvae
F (-Mosquito fish(Gambusia) or mud minnows (Umbra pygmaea)
r r- Mussels/Clams(not Corbicula)
F r Other fish
r" r Salamandem/tadpoles
F r Snails
F Stonefly larvae (Piecoptera [PI)
F r Tipulid larvae
I- r Wormuieeches
13. Streamslde Area Ground Surface Condition -streamslde area metric (skip for Tidal Marsh Streams and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RS). Consider storage capacity with regard to both overbank flow and
upland mnoff.
LB RB
ro A !•, A Lida or no alteration to water storage capacity over a majority of the streamside area
(" B If- B Moderate afferation to water storage capacity over a majority of the streamside area
C" -C (]C Severe alteration to water storage capacity over a majority of the streamside area (examples include: ditches,flll,
soil, compaction, livestock disturbance, buildings, man-made levees, drainage pipes)
14. Streamside Area Water Storage - streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types)
Consider for the Left Bank (LB) and the Right Bank (RS) of the streamside area.
LB RB
C, A C' A Majority of streamside area with depressions able to pond water- 6 inches deep
C7. B C B Majority of streamside area with depressions able to pond water 3 to 6 inches deep
r, C C7 C Majority of streamside area with depressions able to pond water < 3 inches deep
15. Weiland Presence- streamside area metric (skip for Tidal Marsh Streams)
Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the
normal wetted perimeter of assessment reach.
LB RB
C•' Y re Y Are wetlands present in the streamside area?
( N C N
16. Baseflow Contributors -assessment reach metric (skip for size 4 streams and Tidal Marsh Streams)
Check all contributors within the assessment reach or within view of and draining to the assessment reach.
r -A Streams and/or springs jurisdictional discharges)
r- B Ponds (include wet detention basins; do not include sediment basins or dry detention basins)
F C Obstruction that passes some flow during low -flow, periods within assessment area (beaver dam, bottom -release dam)
r- D Evidence of bank seepage or sweating ([ran oxidizing bacteria in water indicates seepage)
r7 E Stream bed or bank soil reduced (dig through deposited sediment I present)
r- F None of the above
17. Baseflow Detractors- assessment area metric(skip for Tidal Marsh Streams)
Check all that apply.
r A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump Installation)
C B Obstruction not passing flow during low flow periods affecting the assessment reach (ex: watertight dam, sediment deposit)
r C Urban stream (124% impervious surface for watershed)
F D Evidence that the stream -side area has been modified resulting in accelerated drainage into the assessment reach
r E Assessment reach relocated to valley edge
17 F None of the above
18. Shading -assessment reach metric (skip for Tidal Marsh Streams)
Consider aspect Consider "leaf -on cond8ion.
Ce A Stream shading is appropriate for stream category (may Include gaps associated with natural processes)
B Degraded (example: scattered trees)
l-ir C Stream shading is gone or largely absent

19. Buffer Width -streamside area metric (skip for Tidal Marsh Streams)
Consider"vegetated buffer" and "wooded buffer" separately for left bank (LB) and right bank (RS) starting at the top
of bank out to the first break.
Vegetated Wooded
LB RS LB RS
r A r;,". A r'A ("_ A 2 100 -feet wide or extends to the edge of the watershed
C B (-,B r B C B From 50 to < 100 -feet wide
('?C r'IC CC R• C From 30 to<50-feet wide
r D C D C D C D From 10 to < 30 -feet wide
C E r, E r, E r E < 10 -feet wide or no trees
20. Buffer Structure- streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RB) for Metric 19 ('Vegetated" Buffer Width).
LB RB
r A r A Mature forest
C B r B Non -mature woody vegetation or modified vegetation structure
r C (' C Herbaceous vegetation with or without a strip of trees < 10 feet wide
C D C D Maintained shmbs
r E r E Little or no vegetation
21. Buffer Stressors - streamside area metric (skip for Tidal Marsh Streams)
Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate If listed stressor abuts stream (Abuts), does not abut but
is within 30 feet of stream (< 30 feet), or Is between 30 to 50 feet of stream (3050 feet).
If none of the following stressors occurs on either bank, check here and skip to Metric 22: r✓
Abuts < 30 feet 30-50 feet
LB RS LB RB LB RS
CA (7A CA r r CA Row crops
B r, B {". B (_8 (- B C B Maintained turf
C C C C C C {") C r C r_"- C Pasture (no livestockpcommemial horticulture
r'- D r D r D C D C D <7 D Pasture (active livestock use)
22. Stem Density- streamside area metric (skip for Tidal Marsh Streams)
Consider for left bank (LB) and right bank (RS) for Metric 19 ("Wooded" Buffer Width).
LB RS
r A r A Medium to high stem density
C B r.'' B Low stem density
r, C r7 C No wooded riparian buffer or predominantly herbaceous species or bare ground
23. Continuity of Vegetated Buffer -streamside area metric (skip for Tidal Marsh Streams)
Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 -feet wide.
LB RS
r A r A The total length of buffer breaks is < 25 percent.
C B C B The total length of buffer breaks is between 25 and 50 pement.
C C r•- C The total length of buffer breaks is > 50 percent.
24. Vegetative Composition - First 100 Not of streamside area metric (skip for Tidal Marsh Streams)
Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as 9 contributes
to assessment reach habitat
LB RS
i A C A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native
species, with non-native invasive species absent or sparse.
C•'`C B r B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native
species. This may Include communities of weedy native species that develop after clear -cutting or clearing or
communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or
communities missing understory but retaining canopy bees.
r" C ["; C Vegetation is severely disturbed in tens of species diversity or proportions. Mature canopy is absent or communities
with non-native invasive species dominant over a large portion of expected strata or communities composed of planted
stands of noncharacteristc species or communities inappropriately composed of a single species or no vegetation.
25. Conductivity -assessment reach metric (skip for all Coastal Plain streams)
25a. C Yes r No Was a conductivity measurement recorded?
If No, select one of the following reasons. ( No Water Co' Other. Too Shallow
251b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter).
r A <46 r'? B 46 to < 67 r, C 67 to < 79 C D 79 to < 230 C E z 230
Notes/Sketch.
Photo l: S-SE/Down Stream Photo2: N-NW/Up Stream

NC SAM Stream Rating Sheet
Accompanies User Manual Version 2.1
Stream Site Name Dan River Steam Station Date of Evaluation 11-2-16
Stream Category Pb1 Assessor Name/Organization J.Howard/J.Cutler
Notes of Field Assessment Farm (YIN)
Presence of regulatory considerations (YIN)
Additional stream information/supplementary measurements included (YIN)
NC SAM feature type (perennial, intermittent, Tidal Marsh Stream)
Function Class Rating Su
YES
NO
YES
Perennfal
USACEf NCDWR
All Streams Intermittent
(1) Hydrology
HIGH
(2) Baseflow
HIGH
(2) Flood Flow
HIGH
(3) Streamside Area Attenuation
HIGH
(4) Floodplain Access
HIGH
(4) Wooded Riparian Buffer
HIGH
(4) Microtopography
NA
(3) Stream Stability
MEDIUM
(4) Channel Stability
MEDIUM
(4) Sediment Transport
LOW
(4) Stream Geomorphology
HIGH
(2) StreamJlntertidal Zone Interaction
NA
(2) Longitudinal Tidal Flow
NA
(2) Tidal Marsh Stream Stability
NA
(3) Tidal Marsh Channel Stability
NA
(3) Tidal Marsh Stream Geomorphology
NA
(1) Water Quality
MEDIUM
(2) Baseflow
HIGH
(2) Streamside Area Vegetation
HIGH
(3) Upfand Pollutant Filtration
HIGH
(3) Thermoregulation
HIGH
(2) Indicators of Stressors
NO
(2) Aquatic Life Tolerance
LOW
(2) Intertidal Zone Filtration
NA
(1) Habitat
MEDIUM
(2) In -stream Habitat
LOW
(3) Baseflow
HIGH
(3) Substrate
LOW
(3) Stream Stability
MEDIUM
(3) In -stream Habitat
LOW
(2) Stream -side Habitat
HIGH
(3) Stream -side Habitat
HIGH
(3) Thermoregulation
HIGH
(2) Tidal Marsh In -stream Habitat
NA
(3) Flow Restriction
NA
(3) Tidal Marsh Stream Stability
NA
(4) Tidal Marsh Channel Stability
NA
(4) Tidal Marsh Stream Geomorphology
NA
(3) Tidal Marsh In -stream Habitat
NA
(2) Intertidal Zone Habitat
NA
Overall
MEDIUM

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
APPENDIX C
PHOTOGRAPHIC LOG

Amec Foster Wheeler Project No. 7810160559 Site Photographs
January 13, 2017 Dan River Steam Station
Stormwater Diversion Project Rockingham County, NC
Photograph
N1
•
of
IWO,
facing eastIX
_
-. r
• i. C
,JFL SWLG
�
ti i' � •'�
Photograph N1
'•} * rip
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i
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,
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a i

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4 f`
44
Ilk
16
jol
{ Ri
S*�
w
.nim'

Amec Foster Wheeler Project No. 7810160559 Site Photographs
January 13, 2017 Dan River Steam Station
Stormwater Diversion Project Rockingham County, NC
II Photograph No. 6 Rem
arks
N`
• View of Wetland
,�qC, facing north
(6/26/2014).
r
3

Amec Foster Wheeler Project No. 7810160559 Site Photographs
January 13, 2017 Dan River Steam Station
Stormwater Diversion Project Rockingham County, NC
Photograph No. 8 Remarks
,��fi' '�, • View of Wetland
E, within
�.'�
gq-v0fa � ,y" fr i Lk w �, owerline ROW
facing northeast
� � ,gip r$9}n�q���,,�� � � L
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'row " �- ,�r � ,F* � ".,k� .� •'.

Amec Foster Wheeler Project No. 7810160559
January 13, 2017
Stormwater Diversion Project
Site Photographs
Dan River Steam Station
Rockingham County, NC
Photograph No. 11
Remarks
View of northern
portion of Dredge
.
Basin, facing west
.:�;,�,...1�:-_�.. ��v.:-,.�,:�s►�:��.�b:
: �., ��..�x=��:.�.;,;�,
(1/5/2017).
W
t
� -+�'y' .r",� .� +% tr At4''. F �`� `•jr-•1hA+�,. 9<_ \�•aS .. 5'
s"
Photograph No. 12
Remarks
• View of southern
portion of Dredge
.
Basin, facing west
(1/5/2017).
W

+"SY. y*x w.41
tF S� r.•
T
gig j
AV

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
APPENDIX D
DREDGE BASIN SURVEY PLAT

-- `� ►�
L6 L7 L8 L9 L10 A
L5 L11
I \
WETLAND AREA N
82,253 SF
J \
L30
J
L28
ti
N
J �
J
L23
<22 it I�
L21 L20 o l
- L18
WETLAND DELINEATION DETAIL
SCALE: 111=50'
THIS CERTIFIES THAT THIS COPY OF THIS PLAT ACCURATELY DEPICTS THE
BOUNDARY OF THE JURISDICTION OF SECTION 404 OF THE CLEAN WATER ACT AS
DETERMINED BY THE UNDERSIGNED ON THIS DATE. UNLESS THERE IS A CHANGE IN
THE LAW OR OUR PUBLISHED REGULATIONS, THIS DETERMINATION OF SECTION 404
JURISDICTION MAY BE RELIED UPON FOR A PERIOD NOT TO EXCEED FIVE YEARS
FROM THIS DATE.
(NAME)
CRAIG S. FLEMING
(TITLE) PROFESSIONAL LAND SURVEYOR
(DATE) 01-24-2017
--rV
+ ASH FILL
AREA 1
/ / f
vJ,
/ I
\ WETLAND / /
AREA
-- r
/
s
\ \ ASH FILL
\ \ AREA 2 //
\ \ // / /f
xx
Xx
xx
zz
/ / _ psi
SECONDARY
ASH BASIN
o
/o
{
{
c) : FESS �o 7 -,
°4z -
°S1) EMELT TO
US i9?OVAL
t-336
SURA • '\�C�
\L
3AA
VICINITY MAP
1 " = 2000'
LINE
BEARING
DISTANCE
L1
S 71'29'20" E
38.05'
L2
S 60°50'38" E
25.23'
L3
N 84°33'32" E
30.06'
L4
S 60°45'42" E
20.90'
L5
S 48°08'23" E
42.60'
L6
S 47°40'38" E
34.52'
L7
S 39°03'31" E
79.45'
L8
S 39°47'54" E
61.15'
L9
S 38'39'15" E
31.22'
L10
S 35°58'08" E
53.29'
L11
S 32°56'41" E
19.40'
L12
S 29°39'24" W
29.02'
L13
S 54°27'24" W
59.00'
L14
S 45°54'52" W
45.19'
L15
S 45'14'40" W
38.13'
L16
S 42°03'52" W
57.99'
L17
N 05'34'12" W
33.28'
L18
N 48°39'33" W
46.64'
L19
N 24'18'59" W
62.12'
L20
N 38°20'51" W
94.31'
L21
N 41'15'24" W
66.39'
L22
N 05°25'21" W
50.05'
L23
N 43°34'22" W
24.98'
L24
N 02°39'42" E
21.53'
L25
N 65°06'17" W
37.30'
L26
N 23°54'00" W
46.65'
L27
N 48'53'16" E
25.55'
L28
N 31'58'20" W
45.70'
L29
N 63°50'31" E
12.59'
L30
S 36°41'33" E
32.94'
L31
N 71'31'00" E
37.44'
L32
S 85°16'48" E
25.03'
GENERAL NOTES:
THIS MAP DOES NOT MEET G.S. 47-30 AND IS NOT FOR RECORDING OR CONVEYANCE.
AREAS BY COORDINATE COMPUTATION.
ALL DISTANCES SHOWN ARE HORIZONTAL GROUND DISTANCES.
HORIZONTAL DATUM: NAD83(2011).
VERTICAL DATUM: NAVD88.
ELEVATIONS ARE BASED ON NAVD88 AND NCGS MONUMENT "DUKE" ELEVATION 641.37 FEET.
BASE TOPOGRAPHIC CONTOURS & OTHER INFORMATION SHOWN WAS PROVIDED BY OTHERS
AND DERIVED FROM AERIAL SURVEY DATED 2014.
LOCATION WORK SHOWN HEREON WAS DERIVED BY ABOVE GROUND INDICATORS ONLY,
UNLESS OTHERWISE NOTED.
WETLANDS DELINEATED BY OTHERS AND MAPPED BY FLEMING ENGINEERING, INC.
THIS MAP DOES NOT MEET G.S. 47-30 AND IS NOT FOR RECORDING OR CONVEYANCE OR
PROPERTY.
THIS MAP IS SUBJECT TO ANY EASEMENTS, AGREEMENTS OR RIGHTS OF WAY RECORDED
PRIOR TO THE DATE OF THIS MAP WHICH WERE NOT VISIBLE AT THE TIME OF INSPECTION.
THIS MAP WAS PREPARED WITHOUT THE BENEFIT OF A TITLE INVESTIGATION, THEREFORE,
THIS MAP IS SUBJECT TO ANY AND ALL FACTS AN ACCURATE TITLE INVESTIGATION MAY
DISCLOSE.
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1" = 100'
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SCALE: 1"=100'
SHEET
1 OF 1

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
APPENDIX E
PERMIT DRAWINGS - PLAN VIEW and CROSS-SECTION DRAWINGS

STORMWATER DIVERSION PROJECT PERMIT DRAWINGS

2 3
,
,
,
,
,
A / DUKE PROPERTY
PROPOSED RIP RAP ENERGY DISSIPATOR
(SW -010)
PROPOSED TIE-IN WITH CITY
OF EDEN SANITARY SEWER
i
1
1 DUKE PROPERTY
1
1 �
I �
" 1 �
1 \�
� 1
1 \
II
6 7 8 REV p
DUKE PROPERTY
\\ I I N
LOD
LCO
PROPOSED \\\\ I X DUKE PROPERTY �� \
BORROW AREA ` \\ \ I �� ♦♦
LOD ✓ PROPOSED FORCE MAIN FROM
STORAGE TANK TO TIE-IN WITH
CITY OF EDEN -3D
� x LINE 1 -UFA TO SW -010 x
JO `• � 1 r �7 � LOD X L (PUMP AROUND)LOD LOID
CONTACT WATER
0 TANK AND 001 '— U01 x FM
SECONDARY _ _ _ x PROPOSED STREAM AND WETLAND IMPACTS - PUMP AROUND ALTERNATIVE
\ CONTAINMENT AREA
Q00'% �+— _ x Water Surface Elevation due to runoff
� a D \ � • • �. I � _ Stream Impacts Wetland Impacts
U 1 — _ Area Name from 25 -year, 24-hour Design storm Notes
0 LOD LOD ^ x 1 I / 111 (ft) (linear feet) (acres)
_x 1 1 UFA 548.05 393 0.22 Not Previously permitted
0 � _
x�x� ( 1 WSA-1 545.91 0 1.89 Not Previously permitted
W _ � X ; 1 11 WSA-2 520.65 65 0.10 Previously permitted
x
0 X�x �F 1 WSA-3 535.6 NA 0.19 Not Previously permitted
W I ° �X I ° ( 1 1 TOTAL 458 2.40 Not Previously permitted
IPROPOSED DAN I 1\
�k 1 RIVER LANDFILL \ 1
C� EXISTING ASH ` 1
x FILL 1 AREA) I 1 ( 11
I oa ;.
CP LINE 5 -SAB TO CONTACT 1
1 + y WATER TANK
+� \ 25 -YEAR, 24 HOUR RUNOFF A -A
1 11 1
--- - INUNDATION ELEVATION = 548.05'
DUKE PROPERTY I
x +
\ - UFA TO SW -010
x S \ J LINE 1 LEGEND
(PUMP AROUND)
LOD COMPOSITE LIMITS OF DISTURBANCE (SEE NOTE 1)
1001 LANDFILL AREA �
x
x x - ) DREDGE AREA
/`
x �x L� J APPROX. LOCATION STORMWATER DIVERSION AREA
- OF EXISTING POLE
TO BE REMOVED - - - - - - - - �- STORAGE TANK AND APPURTENANT FACILITIES
I x
Q WATER STORAGE AREA (WSA 3)
UPLAND FLOW AREA (UFA) BORROW AREA (UNDER SEPARATE CONTRACT)
L� o / LINE 4 - WSA 3 TO WSA 1
\ + o i ��y �- 1 CONTACT WATER PUMPED FLOW PIPE LINES
/ ,LINE 5 -SAB TO CONTACT
WATER TANK I — > > > > — STORMWATER DIVERSION PIPE LINE 1
� PROPOSED DIVIDER BERM U (0 G G _ - - - - - - - - - - - - INUNDATION BOUNDARY (SEE NOTE 2)
\ O - - EXISTING WETLAND
LINE 2: WSA I -TO MANfFOLD
o �+ ° EXISTING STREAM
..
{
o
�� jx kb cb ASH FILL 2 / o o ..... C)
/ x ° ° +
/ WATER STORAGE AREA (WSA 1) +
E/ o ° o + CG 25 -YEAR, 24 HOUR RUNOFF
G INUNDATION ELEVATION = 53
\ x
LINE 3- WSA 2TOWSA 1
SECONDARY A;
0 �(SAB)
001 WATER STORAGE AREA (WSA 2)
° ° O 0 ° \ , \ o
an
v
k /
F D \ V -
..
°
a
25 -YEAR, 24 HOUR RUNOFF
° O° ° ° + % + C INUNDATION ELEVATION = 520.7'
+
REFERENCES °
I PRIMARY ASH BASIN
1. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC
METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON FEBRUARY 7, 2014 BY LDSI, INC.
2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM LIGHT DETECTION AND
RANGING (LIDAR) OBTAINED FROM NCDOT WEBSITE ON AUGUST 7, 2015.
ABSAT ISSUE # DATE DESIGN IREVI DATE I JOB NO. PROJECT TYPE I DES I DFTR I CHKD I ENGR
INCHES 1 2 3 TENTHS 10 20 30 4 5 6
Plotted By: Jordan, Chris Sheet Set: Line 1 Pump Alternative Layout: 1 FULL STORMWATER PIPE PLAN April 24, 2017 08: 00: 23am Q:\Duke\DanRiver\7810160559 Dan River Stormwater Reroute\Exhibit\Line 1 Pump IP Figures\PUMP AROUND ALTERNATIVE - BLACK AND WHITE.dwg
CROSS SECTION
C)
i'
NOTES:
1. COMPOSITE LIMITS OF DISTURBANCE INCLUDES INITIAL SUBMITTAL, APPROVED ADDENDA 1 THROUGH 6.
2. INUNDATION BOUNDARY REFLECTS WATER SURFACE ELEVATION DUE TO RUNOFF FROM THE 25 -YEAR,
24-HOUR DESIGN STORM.
/ 150 0 150 300 FT
i BASIN
Environment & . TITLE PUMP AROUND - STORM WATER DIVERSION PLAN VIEW
Infrastructure
DAN RIVERS EAM STATION F-
/
/
/
/
2801 YORKMONTROAD
SUITE 100
CHARLOTTE, NC 28208
TEL: [phone]
FAX: [phone]
LICENSURE:
NC ENG: F-1253
NC GEOLOGY: C-247
amec
foster
wheeler
INDIVIDUAL PERMIT APPLICATION
FOR
ISSUED FOR PERMITTING - NOT RELEASED FOR CONSTRUCTION
SEAL
NOT
CONSTRUCTION
FOR
DUKE
ENERGY
SCALE: AS SHOWN
DES: CSJ
DWG TYPE: DWG
DFTR: CSJ
JOB NO: 7810-16-0559
CHKD: CHR
DATE: 4/24/2017
ENGR: CHR
FILENAME: PUMP AROUND ALTERNATIVE.dwg
APPD: CHR
DWG SIZE
DRAWING NO.
REVISION
ANSI D
22"x34"
�
O
DESCRIPTION
7 8
9
10

M
M
E—
F
I
1
N
5
I
7
ti
z 1REV o
B -B'
A- ^ '
550
545
542
0+00
WETLAND EXTENTS
STREAM
SECTION A -A'
550
545
542
0+50 0+75
WETLAND EXTENTS
560
560
ATE -F, ELEVATION � _
555
555
_
— — —
550
— —
550
—
---
545
---
545
— — — —
540
540
535
535
532
0+00 0+50
ABSAT ISSUE # DATE DESIGN
1+00
SECTION B -B'
IREVI DATE I JOB NO.
1+50
I PROJECT TYPE I DES I DFTR CHKD I ENGR
532
2+00 2+50 2+69
10 0 10 20 FT
TITLE
Environment &.� CROSS SECTIONS 1
Infrastructure
2801 YORKMONT ROAD amec DAN RIVER STEAM STATION
SUITE 100
CHARLOTTE, NC 28208 foster
TEL: [phone] INDIVIDUAL PERMIT APPLICATION
FAX: [phone] wheeler
LICENSURE:
NC ENG: F-1253 FOR
NC GEOLOGY: C-247
ISSUED FOR PERMITTING - NOT RELEASED FOR CONSTRUCTION
SEAL SCALE: AS SHOWN DES: CSJ
DUKE DWG TYPE: DWG DFTR : CSJ
CHKD: CHR
ENERGY® DATE: 0
NOT FOR 2/8/20176-0559 ENGR: CHR
CONSTRUCTION FILENAME: CROSS SECTIONS 1.dwg APPD: CHR
DWG SIZE DRAWING NO. REVISION
ANSI D ^ O
22"x34" L
DESCRIPTION
I
INCHES 1 2 3 TENTHS 10 20 30 4 5
HIS @d ®yi @1 @n, Chfi§ Sh@@$ 0 30p \DQE\ X L��rn 2� r���I CC11"�J FJ�i�r Fit@err gkf�+`iwPtPuf$� �i( ilD \Li R PPiPm iJHr� Cj� R TI�L6Tl���g1.dwg
7
E,
W, .

M
E—
F
E
N
�1
N
3 IREV 0
C -G',
WETLAND EXTENT
WETLAND EXTENT
555
555
25 YEAR, 24 HOUR WTEIR SURFACE ELEVATION
.
550
�
550
—
------
545
�
545
540
540
--------- — — — — ----------
----
------ —
535
535
530
530
528
0+00
0+50
D -D'
1+00 1+50 2+00
SECTION C -C'
WETLAND EXTENT
WETLAND EXTENT
2+50
528
3+00
550
550
—
545
545
HOUR WATER
RFACE EL E)fgj!ON 535.6'
-SL
—
540
540
------ -- ----
--------- -------
----------- — — — — -- --- --
535
535
ABSAT ISSUE #
530
528
0+00
DATE DESIGN
0+50 1+00 1+50 2+00
SECTION D -D'
Environment &.�
Infrastructure
2801 YORKMONT ROAD amec
SUITE 100
CHARLOTTE, NC 28208 foster
TEL: [phone]
FAX: [phone] wheeler
LICENSURE:
NC ENG: F-1253
NC GEOLOGY: C-247
SEAL
NOT FOR
CONSTRUCTION
IREVI DATE I JOB NO. I PROJECT TYPE I DES I DFTR CHKD I ENGR DESCRIPTION
530
528
2+20
10 0 10 20 FT
TITLE
CROSS SECTIONS 2
DAN RIVER STEAM STATION
INDIVIDUAL PERMIT APPLICATION
FOR
ISSUED FOR PERMITTING - NOT RELEASED FOR CONSTRUCTION
SCALE: AS SHOWN DES: CSJ
DUKE DWG TYPE: DWG DFTR : CSJ
CHKD: CHR
ENERGY® DATE: 0 2/8/20178-0559 ENGR: CHR
FILENAME: CROSS SECTIONS 2.dwg APPD: CHR
DWG SIZE DRAWING NO. REVISION
ANSI D 3 0
22"x34"
I
INCHES 1 2 3 TENTHS 10 20 30 4 5
PIg1t@d ®yi J@r=d@n, Chfi§ Ski@@t @ Nib $hppknoe)�l("at4V&c)uLd.)PQ t: X01 rc��@�tsh@ trc�TVa h24�� 26j�7 0 1107p \DQE\ X L��rn 2� r���I CC11"�J �J i�r F��@� Yd f�+ w�� Puf$� �i( ilD \LirR��ppRnFiJH'rEF146 � TI0L6TZN]] Y92.dwg
7
H
I
10
0
C
W
n1
C)
F

DR 134 and DR 131 PROJECTS PERMIT DRAWINGS

PROPOSED PERMANENT \ �� TIE IN TO EXISTING /
CHANNEL CROSSING GROUND AT 1H:1V
USING CLASS PERMANENT IMPACTS
RIP RAP
Stream 3 130 FT.
Total 130 FT.
�� �q� LIMITS OF DR -134 PROJECT —
� JERSEY
BARRIER\�� GRAVEL ACCESS DRIVE
(TYP.)VY
I
PROPOSED BANK ARMORING
PERMANENT IMPACTED STREAM 3
A AVS (APPROX. 130 FT.)
20' DIA. BUFFER AROUND
V ✓��� MONITORING WELL / (TYP.) JERSEY BARRIER
CLEAR TREES AND VEGETATION, _
AND REMOVE STUMPS TO GRADE
FILL WITH
CLEAR TREES AND VEGETATION , �� I I CLASS A RIP RAP
AND REMOVE STUMPS TO GRADE
LEGEND
EXISTING STREAM — -
WETLANDS
PROJECT BOUNDARY
IMPACTED WETLAND
AREA
/ 30 60 FT
PROPOSED PERMANENT 30 0
CHANNEL CROSSING
SEE NOTES 2AND 3
P
CLIENT: DWN BY: PROJECT DATE:
JMB DAN RIVER STEAM STATION APRIL 25, 2017
DUKE ENERGY - CAROLINAS CHK'DBY: DR -134 PROJECT IMPACT AREA PROJECT NO:
aU ISEDATUM: XXX
7810-15-0418
ENEIY� NAD99 TITLE REV. NO.:
Amec Foster Wheeler Environment &Infrastructure
amec PROJECTION: A
2801 YORKMONT ROAD, SUITE 100
CHARLOTTE, NC 28208 foster�� UTM Zone 0 PLAN VIEW FIGURE No.
PHONE [phone], FAX [phone] heeler SCALE:
W
LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 V = 30' FIGURE 01
Q:\Duke\DanRiver\7810150418_Dan River On—Call\Plansheets\DR-0134 BankArmoringDesign\PCN_Figure.dwg — Layoutt — Apr. 27, 2017 12:51pm — chris.jordan
ZONE AE 100 -YEAR
FLOOD PLAIN LINE
/ 30 60 FT
PROPOSED PERMANENT 30 0
CHANNEL CROSSING
SEE NOTES 2AND 3
P
CLIENT: DWN BY: PROJECT DATE:
JMB DAN RIVER STEAM STATION APRIL 25, 2017
DUKE ENERGY - CAROLINAS CHK'DBY: DR -134 PROJECT IMPACT AREA PROJECT NO:
aU ISEDATUM: XXX
7810-15-0418
ENEIY� NAD99 TITLE REV. NO.:
Amec Foster Wheeler Environment &Infrastructure
amec PROJECTION: A
2801 YORKMONT ROAD, SUITE 100
CHARLOTTE, NC 28208 foster�� UTM Zone 0 PLAN VIEW FIGURE No.
PHONE [phone], FAX [phone] heeler SCALE:
W
LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 V = 30' FIGURE 01
Q:\Duke\DanRiver\7810150418_Dan River On—Call\Plansheets\DR-0134 BankArmoringDesign\PCN_Figure.dwg — Layoutt — Apr. 27, 2017 12:51pm — chris.jordan

CONSTRUCTION NOTES FOR SLOPE REPAIR:
1. WIDTH OF REPAIR AREA TO BE FIELD DETERMINED AND STAKED BY
ENGINEER PRIOR TO CONSTRUCTION.
2. CUT TREES LEAVING STUMPS NO HIGHER THAN 6" ABOVE EXISTING
GROUND. PLACE GEOTEXTILE ON EXISTING GROUND AFTER CLEARING
ACTIVITY. NO CUT OR FILL IS REQUIRED.
3. NONWOVEN GEOTEXTILE SHALL CONSIST OF NEEDLE PUNCHED
POLYPROPYLENE YARNS AND BE RESISTANT TO BIOLOGICAL
DEGRADATION AND NATURALLY OCCURRING CHEMICALS, ALKALI, AND
ACIDS. NONWOVEN GEOTEXTILE SHALL MEET THE FOLLOWING MINIMUM
REQUIREMENTS:
3' ABOVE EAST BANK
PHYSICAL PROPERTY (TEST METHOD) TEST VALUE
GRAB TENSILE STRENGTH (ASTM D4632) 205 LBS
DU ISEDATUM:
fro) ENE RGY3
111-111-
DWN BY:
JMB
GRAB TENSILE ELONGATION (ASTM D4632) 50%
DAIt.
APRIL 25, 2017
III=III-
PROJECT NO:
7810-15-0418
NAD99
NCDOT CLASS 'B' RIPRAP
amec •
foster ®i
W heeler
TRAPEZOIDAL TEAR STRENGTH (ASTM D4533) 80 LBS
REV. NO.:
A
Illllllllll�il
UV RESISTANCE (500 HOURS) (ASTM D4355) 70% RETENTION
SCALE:
V = 30'
11111111111-
IIID
APPARENT OPENING SIZE (ASTM D4751) 0.18 MM
Ill -1i
4. GEOTEXTILE SHALL RUN HORIZONTALLY (PARALLEL TO SHORELINE) AND
IIE-
II
BE PLACED FROM BOTTOM OF EROSION AREA TO TOP SOCK THAT THE
III
UPPER SECTIONS OVERLAP OVER TOP OF THE LONGER SECTIONS.
1I
5. DROP DISTANCE FOR RIPRAP SHOULD BE LIMITED TO NO MORE THAN 3 FT.
�Z
IIII II
TO AVOID PUNCTURING THE GEOTEXTILE THROUGH THE BEDDING STONE.
6. MINIMUM RIPRAP THICKNESS MEASURED PERPENDICULAR TO EXISTING
-T
16 OZ. NON -WOVEN GEOTEXTILE
SLOPE SHALL BE 18".
L=11:
1=Illi ANCHOR AT SHORELINE USING
1=III=111- STAPLES PER MANUFACTURER'S
II=III-IIi
�
11=111- RECOMMENDATION
111 EXTEND RIPRAP AS NEEDED TO
=IIII PREPARE A STABLE PLATFORM
EAST j.l 11 l
BANK =111111- NWL 77
RAILROAD BRANCH CREEK BED
EXPOSED WEATHERED OR
HARD ROCK (TYPICAL)
BEDDING STONE AND RIP RAP INSTALLATION
NOT TO SCALE
6" BEDDING LAYER OF 57 STONE
WEST
BANK
Q:\Duke\DanRiver\7810150418_Dan River On—Call\Plansheets\DR-0134 BankArmoringDesign\PCN_Figure.dwg — Layout2 — Apr. 27, 2017 4:35pm — josh.bell
DU ISEDATUM:
fro) ENE RGY3
CLIENT:
DUKE ENERGY - CAROLINAS
DWN BY:
JMB
PROJECT
DAN RIVER STEAM STATION
DR -134 PROJECT IMPACT AREA
DAIt.
APRIL 25, 2017
CHK'DBY:
XXX
PROJECT NO:
7810-15-0418
NAD99
Amec Foster Wheeler Environment &Infrastructure
2801 O CHARLOTTE, NC 28208E 100
PHONE [phone], FAX [phone]
LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247
amec •
foster ®i
W heeler
TITLE
SECTION DETAIL
REV. NO.:
A
PROJECTION:
UTM Zone 0
FIGURE No.
FIGURE 02
SCALE:
V = 30'
Q:\Duke\DanRiver\7810150418_Dan River On—Call\Plansheets\DR-0134 BankArmoringDesign\PCN_Figure.dwg — Layout2 — Apr. 27, 2017 4:35pm — josh.bell

PERMANENT ��I
CHANNEL CROSSING
o
o rn
\ \ \ Lr)
VTIE IN TO EXISTING
GROUND AT 1HAV
USING CLASS A
RIP RAP
_ 20' DIA. BUFFER AROUND„,
JERSEY MONITORING WELL
BARRIER
V
(TYP.)
CO 0
PERMANENT IMPACTED STREAM3
(APPROX. 15 FT.)
FILL WITH
CLEAR TREES AND VEGETATION , CLASS A RIP RAP
AND REMOVE STUMPS TO GRADE I I I ! I \\Illy I
i
PERMANENT IMPACTS
Stream 3 15 FT.
Total 15 FT.
GRAVEL ACCESS DRIVE
502
X
� o \
JERSEY BARRIER — — —
(TYP. )
1 W
SEE ACCESS ROAD TYPICAL
i
SECTION DETAIL
o �
i
LEGEND
EXISTING STREAM — —
WETLANDS
PROJECT BOUNDARY
IMPACTED WETLAND
AREA
ZONE AE 100 -YEAR
FLOOD PLAIN LINE,
GRADE TO TIE IN NO
GREATER THAN 4HAV
PERMANENT
CHANNEL CROSSING
DUKE
XXX
7810-15-0418
DATUM:
ENEIY� NAD99 TITLE REV NO
Amec Foster Wheeler Environment &Infrastructure
amec PROJECTION: A
2801 YORKMONT ROAD, SUITE 100
CHARLOTTE, NC 28208 foster�� UTM Zone 0 PLAN VIEW FIGURE No.
PHONE [phone], FAX [phone] heeler SCALE:
W
LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 V = 30' FIGURE 01
Q:\Duke\DanRiver\7810150418_Dan River On—Call\Plansheets\DR-0130 ScarpRepairRoadDesign\PCN_Figure.dwg — Layoutl — Apr. 27, 2017 1:24pm — chris.jordan
30 60 FT
yO
l
CLIENT:
DWN BY:
JMB
PROJECT
DAN RIVER STEAM STATION
DATE:
APRIL 25, 2017
DUKE ENERGY - CAROLINAS
DR -131 PROJECT IMPACT AREA
CHK'DBY:
PROJECT NO:
DUKE
XXX
7810-15-0418
DATUM:
ENEIY� NAD99 TITLE REV NO
Amec Foster Wheeler Environment &Infrastructure
amec PROJECTION: A
2801 YORKMONT ROAD, SUITE 100
CHARLOTTE, NC 28208 foster�� UTM Zone 0 PLAN VIEW FIGURE No.
PHONE [phone], FAX [phone] heeler SCALE:
W
LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 V = 30' FIGURE 01
Q:\Duke\DanRiver\7810150418_Dan River On—Call\Plansheets\DR-0130 ScarpRepairRoadDesign\PCN_Figure.dwg — Layoutl — Apr. 27, 2017 1:24pm — chris.jordan

12" ABC STONE
GEOTEXTILE NON -WOVEN FILTER FABRIC
(MIRAFI 180N OR APPROVED EQUIVALENT)
5.0' MIN.
CLASS A RIP RAP
NON -WOVEN GEOTEXTILE
SKAPS MT40540 OR
APPROVED EQUIVALENT
20' -
CHANNELBANK
STREAM CROSSING PROFILES
NOT TO SCALE
SKAPS MT4050 OR
APPROVED EQ b(ALENT 0 30 60 FT
CLIENT: DWN BY: PROJECT DAIt.
JMB DAN RIVER STEAM STATION APRIL 25, 2017
DUKE ENERGY - CAROLINAS CHK'DBY: DR -131 PROJECT IMPACT AREA PROJECT NO:
DUKE XXX
7810-15-0418
DATUM:
ENE RGY� TITLE
Amec Foster Wheeler Environment & Infrastructure NAD99 REV. NO.:
amec � PROJECTION: A
zsol YO CHARLOTTE, NC 28208 E 100 UTM Zone 0 SECTION DETAILS
foster ,� FIGURE No.
PHONE [phone], FAX [phone] SCALE:
Wheeler
LICENSURE: NC ENG: F-1253 NC GEOLOGY: C-247 V = 30' FIGURE 02
Q:\Duke\DanRiver\7810150418_Dan River On—Call\Plansheets\DR-0130 ScarpRepairRoadDesign\PCN_Figure.dwg — Layout2 — Apr. 27, 2017 4:45pm — josh.bell

SURVEY PLAT OF NORTH AND SOUTH STREAM/ROAD CROSSINGS
(CULVERTED IMPACTS - MARCH 2016)

Wetland Master Plan April 28, 2017
Dan River Steam Station Stormwater Diversion Project and Associated Projects
Rockingham County, North Carolina
Project No. 7810160559
APPENDIX F
USFWS and NCNHP DATABASE SEARCH QUERIES

IPaC: Explore Location
IPaC
IPaC resource list
Location
Rockingham County, North Carolina
Local office
Raleigh Ecological Services Field Office
t. [phone]
JEJ [phone]
MAILING ADDRESS
Post Office Box 33726
Raleigh, NC 27636-3726
PHYSICAL ADDRESS
551 Pylon Drive, Suite F
Raleigh, NC 27606-1487
Pagel of 8
U.S. Fish & Wildlife Service
https://ecos.fws.gov/ipac/location/IY2F71KVE5B2BMBQFHA65LV3RU/resources 1/10/2017

IPaC: Explore Location Page 2 of 8
Endangered species
This resource list is for informational purposes only and should not be used for
planning or analyzing project level impacts.
Section 7 of the Endangered Species Act requires Federal agencies to "request of
the Secretary information whether any species which i5 /i5ted or proposed to be
listed maybe pre5entin the area of5uch proposed action" for any project that is
conducted, permitted, funded, or licensed by any Federal agency.
A letter from the local office and a species list which fulfills this requirement
can only be obtained by requesting an official species list either from the
Regulatory Review section in IPaC or from the local field office directly.
For project evaluations that require USFWS concurrence/review, please return to
the IPaC website and request an official species list by creating a project and
making a request from the Regulatory Review section.
Listed species
are managed by the Endangered Species Program of the U.S. Fish and Wildlife
Service.
1. Species listed under the Endangered Species Act are threatened or endangered;
IPaC also shows species that are candidates, or proposed, for listing. See the listing
status page for more information.
The following species are potentially affected by activities in this location:
Clams
NAME
STATUS
James Spinymussel Pleurobema collina Endangered
No critical habitat has been designated for this species.
http://ecos.fws.gov/ecp/species/2212
https://ecos.fws.gov/ipac/location/IY2F71KVE5B2BMBQFHA65LV3RU/resources 1/10/2017

IPaC: Explore Location
Flowering Plants
NAME STATUS
Smooth Coneflower Echinacea laevigata Endangered
No critical habitat has been designated for this species.
http://ecos.fws.gov/ecp/species/3473
Critical habitats
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Potential effects to critical habitat(s) in this location must be analyzed along with
the endangered species themselves.
THERE ARE NO CRITICAL HABITATS AT THIS LOCATION.
Migratory birds
Birds are protected under the Migratory Bird Treaty Act
and the Bald and Golden Eagle Protection Act?.
Any activity that results in the take (to harass, harm, pursue, hunt, shoot, wound, kill,
trap, capture, or collect, or to attempt to engage in any such conduct) of migratory
birds or eagles is prohibited unless authorized by the U.S. Fish and Wildlife Service
3. There are no provisions for allowing the take of migratory birds that are
unintentionally killed or injured.
Any person or organization who plans or conducts activities that may result in the
take of migratory birds is responsible for complying with the appropriate regulations
and implementing appropriate conservation measures.
1. The Migratory Birds Treaty Act of 1918.
2. The Bald and Golden Eagle Protection Act of 1940.
3. 50 C.F.R. Sec. 10.12 and 16 U.S.C. Sec. 668(a)
Additional information can be found using the following links:
https://ecos.fws.gov/ipac/location/IY2F71KVE5B2BMBQFHA65LV3RU/resources 1/10/2017

IPaC: Explore Location
Page 4 of 8
• Birds of Conservation Concern http://www.fws.gov/birds/management/managed-
species/
bi rds-of-conservation-concern.php
• Conservation measures for birds http://www.fws.gov/birds/management/project-
assessment-tools-and-guidance/
con servation-measures. php
• Year-round bird occurrence data
http://www.birdscanada.org/birdmon/default/datasummaries.jsp
The migratory birds species listed below are species of particular conservation
concern (e.g. Birds of Conservation Concern) that may be potentially affected by
activities in this location, not a list of every bird species you may find in this location.
Although it is important to try to avoid and minimize impacts to all birds, special
attention should be made to avoid and minimize impacts to birds of priority concern.
To view available data on other bird species that may occur in your project area,
please visit the AKN Histogram Tools and Other Bird Data Resources.
NAM E SEASON(S)
American Bittern Botaurus lentiginosus Wintering
http://ecos.fws.gov/ecp/species/6582
Bald Eagle Haliaeetus leucocephalus Year-round
http://ecos.fws. og v/ecp/species/1626
Blue -winged Warbler Vermivora pinus Breeding
Brown -headed Nuthatch Sitta pusilla Year-round
Chuck -will's -widow Caprimulgus carolinensis Breeding
Fox Sparrow Passerella iliaca Wintering
Kentucky Warbler Oporornis formosus Breeding
Least Bittern Ixobrychus exilis Breeding
http://ecos.fws.gov/ecp/species/6175
https://ecos.fws.gov/ipac/location/IY2F71KVE5B2BMBQFHA65LV3RU/resources 1/10/2017

IPaC: Explore Location
Loggerhead Shrike Lanius ludovicianus Year-round
http://ecos.fws.gov/ecp/species/8833
Prairie Warbler Dendroica discolor Breeding
Prothonotary Warbler Protonotaria citrea Breeding
Red-headed Woodpecker Melanerpes erythrocephalus Year-round
Rusty Blackbird Euphagus carolinus Wintering
Short -eared Owl Asio flammeus Wintering
http://ecos.fws.gov/ecp/species/9295
Wood Thrush Hylocichla mustelina Breeding
Worm Eating Warbler Helmitheros vermivorum Breeding
Page 5 of 8
What does IPaC use to generate the list of migratory bird species potentially occurring in my
specified location?
Landbirds:
Migratory birds that are displayed on the IPaC species list are based on ranges in the latest edition
of the National Geographic Guide, Birds of North America (6th Edition, 2011 by Jon L. Dunn, and
Jonathan Alderfer). Although these ranges are coarse in nature, a number of U.S. Fish and Wildlife
Service migratory bird biologists agree that these maps are some of the best range maps to date.
These ranges were clipped to a specific Bird Conservation Region (BCR) or USFWS Region/Regions,
if it was indicated in the 2008 list of Birds of Conservation Concern (BCC) that a species was a BCC
species only in a particular Region/Regions. Additional modifications have been made to some
ranges based on more local or refined range information and/or information provided by U.S. Fish
and Wildlife Service biologists with species expertise. All migratory birds that show in areas on land
in IPaC are those that appear in the 2008 Birds of Conservation Concern report.
Atlantic Seabirds:
Ranges in IPaC for birds off the Atlantic coast are derived from species distribution models
developed by the National Oceanic and Atmospheric Association (NOAA) National Centers for
Coastal Ocean Science (NCCOS) using the best available seabird survey data for the offshore
Atlantic Coastal region to date. NOAANCCOS assisted USFWS in developing seasonal species
ranges from their models for specific use in IPaC. Some of these birds are not BCC species but
https://ecos.fws.gov/ipac/location/IY2F71KVE5B2BMBQFHA65LV3RU/resources 1/10/2017

IPaC: Explore Location
Page 6 of 8
were of interest for inclusion because they may occur in high abundance off the coast at different
times throughout the year, which potentially makes them more susceptible to certain types of
development and activities taking place in that area. For more refined details about the abundance
and richness of bird species within your project area off the Atlantic Coast, see the Northeast
Ocean Data Portal. The Portal also offers data and information about other types of taxa that may
be helpful in your project review.
About the NOAANCCOS models: the models were developed as part of the NOAANCCOS project:
Integrative Statistical Modeling and Predictive Mapping of Marine Bird Distributions and
Abundance on the Atlantic Outer Continental Shelf. The models resulting from this project are
being used in a number of decision-support/mapping products in order to help guide decision-
making on activities off the Atlantic Coast with the goal of reducing impacts to migratory birds. One
such product is the Northeast Ocean Data Portal, which can be used to explore details about the
relative occurrence and abundance of bird species in a particular area off the Atlantic Coast.
All migratory bird range maps within IPaC are continuously being updated as new and better
information becomes available.
Can I get additional information about the levels of occurrence in my project area of specific
birds or groups of birds listed in IPaC?
Landbirds:
The Avian Knowledge Network (AKN) provides a tool currently called the "Histogram Tool", which
draws from the data within the AKN (latest,survey, point count, citizen science datasets) to create a
view of relative abundance of species within a particular location over the course of the year. The
results of the tool depict the frequency of detection of a species in survey events, averaged
between multiple datasets within AKN in a particular week of the year. You may access the
histogram tools through the Migratory Bird Programs AKN Histogram Tools webpage.
The tool is currently available for 4 regions (California, Northeast U.S., Southeast U.S. and Midwest),
which encompasses the following 32 states: Alabama, Arkansas, California, Connecticut, Delaware,
Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maine, Maryland, Massachusetts,
Michigan, Minnesota, Mississippi, Missouri, New Hampshire, New Jersey, New York, North,
Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West
Virginia, and Wisconsin.
In the near future, there are plans to expand this tool nationwide within the AKN, and allow the
graphs produced to appear with the list of trust resources generated by IPaC, providing you with
an additional level of detail about the level of occurrence of the species of particular concern
potentially occurring in your project area throughout the course of the year.
Atlantic Seabirds:
For additional details about the relative occurrence and abundance of both individual bird species
and groups of bird species within your project area off the Atlantic Coast, please visit the Northeast
Ocean Data Portal. The Portal also offers data and information about other taxa besides birds that
may be helpful to you in your project review. Alternately, you may download the bird model results
https://ecos.fws.gov/ipac/location/IY2F71KVE5B2BMBQFHA65LV3RU/resources 1/10/2017

IPaC: Explore Location
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files underlying the portal maps through the NOAANCCOS Integrative Statistical Modeling and
Predictive Mapping of Marine Bird Distributions and Abundance on the Atlantic Outer Continental
Shelf project webpage.
Facilities
Wildlife refuges
Any activity proposed on National Wildlife Refuge lands must undergo a 'Compatibility
Determination' conducted by the Refuge. Please contact the individual Refuges to
discuss any questions or concerns.
THERE ARE NO REFUGES AT THIS LOCATION.
Fish hatcheries
THERE ARE NO FISH HATCHERIES AT THIS LOCATION.
Wetlands in the National Wetlands
Inventory
Impacts to NWI wetlands and other aquatic habitats may be subject to regulation
under Section 404 of the Clean Water Act, or other State/Federal statutes.
For more information please contact the Regulatory Program of the local
U.S. Army Corps of Engineers District.
WETLAND INFORMATION IS NOT AVAILABLE AT THIS TIME
Data limitations
https://ecos.fws.gov/ipac/location/IY2F71KVE5B2BMBQFHA65LV3RU/resources 1/10/2017

IPaC: Explore Location
Page 8 of 8
The Service's objective of mapping wetlands and deepwater habitats is to produce reconnaissance
level information on the location, type and size of these resources. The maps are prepared from
the analysis of high altitude imagery. Wetlands are identified based on vegetation, visible
hydrology and geography. A margin of error is inherent in the use of imagery; thus, detailed on -
the -ground inspection of any particular site may result in revision of the wetland boundaries or
classification established through image analysis.
The accuracy of image interpretation depends on the quality of the imagery, the experience of the
image analysts, the amount and quality of the collateral data and the amount of ground truth
verification work conducted. Metadata should be consulted to determine the date of the source
imagery used and any mapping problems.
Wetlands or other mapped features may have changed since the date of the imagery or field work.
There may be occasional differences in polygon boundaries or classifications between the
information depicted on the map and the actual conditions on site.
Data exclusions
Certain wetland habitats are excluded from the National mapping program because of the
limitations of aerial imagery as the primary data source used to detect wetlands. These habitats
include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal
zones of estuaries and nearshore coastal waters. Some deepwater reef communities (coral or
tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of
their depth, go undetected by aerial imagery.
Data precautions
Federal, state, and local regulatory agencies with jurisdiction over wetlands may define and
describe wetlands in a different manner than that used in this inventory. There is no attempt, in
either the design or products of this inventory, to define the limits of proprietary jurisdiction of any
Federal, state, or local government or to establish the geographical scope of the regulatory
programs of government agencies. Persons intending to engage in activities involving
modifications within or adjacent to wetland areas should seek the advice of appropriate federal,
state, or local agencies concerning specified agency regulatory programs and proprietary
jurisdictions that may affect such activities.
https://ecos.fws.gov/ipac/location/IY2F71KVE5B2BMBQFHA65LV3RU/resources 1/10/2017

Ncrrural an d
Cultural Resources
January 5, 2017
Julia Tillery
Amec Foster Wheeler Environment & Infrastructure, Inc.
5710 Oleander Dr., Ste 110
Wilmington, NC 28403
RE: Duke Energy Dan River Station IP
Dear Julia Tillery:
PAT McC.'RORY
GavvmVir
SUSAN KLUTTZ
semerart'
NCNHDE-2702
The North Carolina Natural Heritage Program (NCNHP) appreciates the opportunity to provide information
about natural heritage resources for the project referenced above.
A query of the NCNHP database indicates that there are records for rare species, important natural
communities, natural areas, or conservation/managed areas within the proposed project boundary. These
results are presented in the attached `Documented Occurrences' tables and map.
The attached `Potential Occurrences' table summarizes rare species and natural communities that have been
documented within a one -mile radius of the property boundary. The proximity of these records suggests that
these natural heritage elements may potentially be present in the project area if suitable habitat exists and is
included for reference. Tables of natural areas and conservation/managed area within a one -mile radius of the
project area, if any, are also included in this report.
Please note that natural heritage element data are maintained for the purposes of conservation planning, project
review, and scientific research, and are not intended for use as the primary criteria for regulatory decisions.
Information provided by the NCNHP database may not be published without prior written notification to the
NCNHP, and the NCNHP must be credited as an information source in these publications. Maps of NCNHP
data may not be redistributed without permission.
Also please note that the NC Natural Heritage Program may follow this letter with additional correspondence if a
Dedicated Nature Preserve (DNP), Registered Heritage Area (RHA), Clean Water Management Trust Fund
(CWMTF) easement, or an occurrence of a Federally -listed species is documented near the project area.
If you have questions regarding the information provided in this letter or need additional assistance, please
contact Suzanne Mason at suzanne.mason&ncdcr.gov or 919.707.8637.
Sincerely,
NC Natural Heritage Program
--"-'Nothing Compares
State o1FNorck C=Ll a I Deparunent cfl,==Bal and 09� Rmauras
109 Fast am_- Street I Rale46NC27601
919407-730D

Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Intersecting the Project Area
Duke Energy Dan River Station IP
January 5, 2017
NCNHDE-2702
Element Occurrences Documented Within Project Area
Taxonomic EO ID Scientific Name
Common Name
Last
Element Accuracy Federal
State
Group
Observation
Occurrence Status
Status
Date
Rank
Freshwater 3622 Lasmigona subviridis
Green Floater
2014-09-03
E 3 -Medium Species of
Endangered
Bivalve
Concern
Freshwater Fish 11787 Moxostoma ariommum
Bigeye Jumprock
2008-08-18
E 3 -Medium ---
Threatened
Natural Areas Documented Within Project Area
Site Name
Representational Rating
Collective Rating
ROA/Dan River Aquatic Habitat
8 -Not Applicable
2 -Very High
No Managed Areas Documented within the Project Area
Global State
Rank Rank
G3 S2
G4 S2
Definitions and an explanation of status designations and codes can be found at https://ncnhde.natureserve.org/content/help. Data query generated on January 5, 2017; source: NCNHP, Q3 October 2016. Please resubmit your
information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database.
Page 2 of 4

Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Within a One -mile Radius of the Project Area
Duke Energy Dan River Station IP
January 5, 2017
NCNHDE-2702
Element Occurrences Documented Within a One -mile Radius of the Project Area
Taxonomic EO ID Scientific Name Common Name Last Element
Group Observation Occurrence
Date Rank
Dragonfly or 33770 Somatochlora georgiana Coppery Emerald 2004 -Pre H?
Damselfly
Freshwater 3622 Lasmigona subviridis Green Floater 2014-09-03
Bivalve
Freshwater Fish 27492 Carpiodes cyprinus Quillback 2009-01-21
Freshwater Fish 11787 Moxostoma ariommum Bigeye Jumprock 2008-08-18
Vascular Plant 5086 Parthenium auriculatum Glade Wild Quinine 1956-07-07
Vascular Plant 22121 Polemonium reptans var. Jacob's Ladder 1956-05
reptans
Natural Areas Documented Within a One -mile Radius of the Project Area
Site Name Representational Rating
ROA/Dan River Aquatic Habitat 8 -Not Applicable
No Managed Areas are Documented Within a One -mile Radius of the Project Area
E
E
E
H
1
Accuracy
Federal
State
Global
State
Status
Status
Rank
Rank
5 -Very
---
Significantly
G3G4
S2?
Low
Rare
3 -Medium
Species of
Endangered
G3
S2
Concern
3 -Medium
---
Significantly
G5
S2
Rare
3 -Medium
---
Threatened
G4
S2
3 -Medium
---
Significantly
G3G4
S3
Rare
Throughout
3 -Medium
---
Threatened
G5T5
S1
Collective Rating
2 -Very High
Definitions and an explanation of status designations and codes can be found at https://ncnhde.natureserve.org/content/help. Data query generated on January 5, 2017; source: NCNHP, Q3 October 2016. Please resubmit your
information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database.
Page 3 of 4

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Project Boundary
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Page 4 of 4
1:29,797
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Sources: Esn, HERE, DeLorme, Intermap, increment P Corp., GEBCO, USGS,
FAO NPS, NRCAN, GeoBase, ION, Kadaster NL, Ordnance Survey, Esri Japan,
METi, Esri China (Hong Kong), swisatopo, MatomyIndia, @ OpenStreetMap
contributors, and the GIS User Community