NC0003433_Restoration Annual Report_20180126

ENERGY.
January 26, 2018
Mr. Jeff Poupart
Water Quality Permitting Section Chief
North Carolina Division of Water Resources
1617 Mail Services Center
Raleigh, NC 27699-1617
Subject: Submittal of 2017 Surface Water Protection
and Restoration Annual Report
Duke Energy Progress, LLC.
Dear Mr. Poupart,
Richard E Baker, Jr P E.
Director
EHS CCP Environmental Programs
526 S Church Streel
Mail Code EC 13K
Charlotte, NC 28202
[phone]
ReCE6\JECICFNR/O\HR
JAN 3 0 2018
\Nater Resources
on
Permitting
In accordance with North Carolina General Statute 130A -309.212(e), Duke Energy is required to
"... submit an Annual Surface Water Protection Report to the department no later than January
31 of each year." Duke Energy is pleased to submit the attached 2017 Surface Water
Protection and Restoration Annual Reports for Duke Energy Progress, LLC. The attached
report provides information for the following facilities:
Duke Energy Progress, LLC
Asheville Steam Plant, Cape Fear Steam Plant, H.F. Lee Energy Complex, Mayo Steam Plant,
Roxboro Steam Plant, Weatherspoon Steam Plant and L.V. Sutton Energy Complex.
If you have any questions regarding these materials, please contact Mr. Shannon Langley at
[phone] or [e-mail].
Sincerely,
��
Richard E. Baker, Jr, P.E.
Director, EHS CCP Environmental Programs
Attachment
Cc:
Shannon Langley — via email w/attachment
EHS CCP SME's - via email w/attachment
FileNet

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2017 North Carolina Surface Water
Protection and Restoration Annual
Report
Duke Energy Progress, LLC
Submitted: January 2018

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
Table of Contents
Table of Contents
Section 1 - Introduction.
Section 2 - Site Descriptions
21
Asheville Steam Electric Plant
22
Cape Fear Steam Electric Plant
23
H F Lee Energy Complex
24
Mayo Steam Electric Plant
25
Roxboro Steam Electric Plant
26
L V Sutton Energy Complex
27
Weatherspoon Plant
Section 3 —
Surface Water Sampling Summary
Section 4 —
Surface Water Protection and Restoration Summary
Section 5 —
Discharge Identification Status
Section 6 —
Discharge Assessment Status
Table 3-1 Duke Energy Coal -Fired Steam Stations 2017 Surface Water Quality Sampling
Page
i
2
2
2
3
4
4
5
6
6
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3

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
Section 1 - Introduction
The purpose of this document is to address the requirements of North Carolina General
Statutes (N C G S ) § 130A-309 212(e), Reporting, as established by North Carolina Senate Bill
729, the Coal Ash Management Act of 2014 (CAMA), for multiple ash basin sites operated
under National Pollutant Discharge Elimination System (NPDES) permits as referenced herein.
The following requirements are contained in N C G.S § 130A-309 212
(e) Reporting. — In addition to any other reporting required by the Department,
the owner of a coal combustion residuals surface impoundment shall submit an
annual Surface Water Protection and Restoration Report to the Department no
later than January 31 of each year. The Report shall include a summary of all
surface water sampling, protection, and restoration activities related to the
impoundment for the preceding year, including the status of the identification,
assessment, and correction of unpermitted discharges from coal combustion
residuals surface impoundments to the surface waters of the State.
CAMA establishes the submittal date of this report as no later than January 31, 2018. This
report satisfies the requirements of N C G S § 130A-309 212(e) for activities occurring in 2017
at multiple facilities with ash basin treatment units.
Section 2 - Site Descriptions
2.1 Asheville Steam Electric Plant
The Asheville Steam Electric Plant (Asheville Plant) is located near Asheville, in Buncombe
County, North Carolina The Asheville Plant began commercial operation in the 1960s, with
additions in the 1990s and around 2000, and consists of two coal-fired units that primarily use
bituminous coal. In addition to the coal-fired units, the Asheville Plant has two combustion
turbines Coal combustion residuals (CCR) have been managed in the Asheville Plant's on-site
ash basins and used as beneficial fill at the nearby Asheville Regional Airport (Asheville Airport).
Lake Julian was built for cooling water purposes by damming the flow of Powell Creek on the
nosh side of the Asheville Plant A large portion of Lake Julian borders the east side of the
Asheville Plant site Surface water from the French Broad River is also pumped into Lake Julian
as a supplemental water supply. The water from the French Broad River enters a stilling area of
the lake on the north side of the Asheville Plant Heated water is discharged back into Lake
Julian to the east of the Asheville Plant. The French Broad River borders the west side of the
prooerty and flows south to north. Powell Creek also flows south to north prior to formation of
Lake Julian Powell Creek flows east to west from the Lake Julian Dam to the French Broad
River.
The Asheville Plant and ash basins are located on the east side of 1-26 and the French Broad
River where the ash management system consisted of a series of basins The original 1964 ash
basin, built during Asheville Plant construction and expanded in the 1970s, was overlain with

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
lined wastewater treatment wetlands The wastewater treatment wetlands have been removed
and the FGD wastewater they were designed to treat is currently being sent to the municipal
sewer under an Industrial pretreatment permit The 1964 ash basin was replaced in
approximately 1982 with a second ash basin, built to the west of the 1964 basin Removal of all
visible ash from the 1982 ash basin was completed by the end of September 2016 The removal
of ash from this basin was completed consistent with NCDEQ's document titled "CCR Surface
Impoundment Closure Guidelines for Protection of Groundwater" received under cover letter
dated November 4, 2016 Ash being generated by ongoing electric generation is treated and
removed in a concrete -lined rim ditch located on a portion of the 1964 ash basin prior to being
dewatered and removed from the site for disposal at an offsite landfill. A natural gas fired
combined cycle generation unit is being constructed within the footprint of the 1982 ash basin
The ash basin/rim ditch system is part of the Asheville Plant's wastewater treatment system,
receiving Inflows from ash transport water, coal pile runoff, storm water runoff, and various low
volume wastes The treated wastewater is regulated and permitted by NPDES permit number
NC000396 Treated effluent from the wastewater system is released to the French Broad River
through a permitted outfall
2.2 Cape Fear Steam Electric Plant
The Cape Fear Steam Electric Plant (Cape Fear Plant) Is located on approximately 900 acres in
central North Carolina near Moncure, In Chatham County The site is along the east bank of the
Cape Fear River, southeast of Moncure and west of Corinth Road Cape Fear Plant operations
began In 1923 with additional units added from 1924 to 1969 In the most recent configuration,
the Cape Fear Plant employed two coal-fired units along with four oil -fueled combustion turbine
units Residuals generated from coal combustion were treated and stored on-site in ash basins
Operations were terminated at the Cape Fear Plant In October 2012 and generation plant
demolition activities have been completed
Five ash basins were historically used at the Cape Fear Plant and are referenced using the date
of construction- 1956, 1963, 1970, 1978, and 1985 The 1956 ash basin is located north of the
former Cape Fear Plant, and the remaining ash basins are located south of the Cape Fear Plant
area The 1963 and 1970 ash basins were constructed on the west side of the Cape Fear Plant
property, adjacent to the Cape Fear River. The 1978 ash basin was constructed east of and
abutting the 1963 and 1970 ash basins The 1985 ash basin was constructed east of the
existing ash basins between the wastewater discharge canal and Corinth Road The ash basins
are Impounded by earthen dams.
Currently, the 1956, 1963, and 1970 ash basins are dry and entirely covered with vegetation
(hardwood and pine trees). A small area near the southern end of the 1970 ash basin is
seasonally wet
All wastewater, formerly generated by the site, historically discharged to the discharge canal
prior to the combined outfall called outfall 007 The combined outfall now contains all waste
stream flows and is located in the effluent channel
Discharges from the 1978 and 1985 ash basins are permitted by the NCDEQ DWR under
NPDES Permit NC0003433
3

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
2.3 H.F. Lee Energy Comdex
The H F Lee Energy Complex (Lee Plant) is located in central eastern North Carolina near
Goldsboro, North Carolina. The Lee Plant began operations in 1951, adding coal-fired units in
the early 1950s and 1960s The Lee Plant employed various combinations of three coal-fired
units along with four oil -fueled combustion turbine units to produce energy The three coal-fired
units were retired in September 2012 followed by the four oil -fueled combustion turbine units in
October 2012 In December 2012, the H F Lee Combined Cycle Plant was brought online
The property encompasses approximately 2,100 acres, including the ash basins, a cooling pond
(located to the east of the Lee Plant operations area), and the Neuse River
Four ash basins have been used to manage sluiced coal ash generated at the Lee Plant and
are referenced using the date of construction Three inactive ash basins were built in
approximately the late 1950s and early 1960s and are located west of the power production
area The active ash basin was constructed in the late 1970s and is located northeast of the
power production area. Combined, the active and inactive ash basins encompass approximately
314 acres (171 acres for the inactive ash basins and 143 acres for the active ash basin) The
ash basins are impounded by earthen dikes. Discharge from the active ash basin to the Neuse
River is permitted and regulated under NPDES Permit NC0003417
2.4 Mayo Steam Electric Plant
The Mayo Steam Electric Plant (Mayo Plant) is a single -unit, coal-fired electric generating facility
located in Person County, North Carolina, near the city of Roxboro The Mayo Plant became
fully operational in June 1983
The Mayo Plant is located on Boston Road (US Highway 501) north of Roxboro. The northern
property line extends to the North CarolinaNirginia state line The overall topography of the
Mayo Plant generally slopes toward the east (Mayo Reservoir) and northeast
The Mayo Plant ash basin is approximately 140 acres in size with an earthen dike. The ash
basin is located north of the Mayo Plant operational area and west of Mayo Lake CCR was
transported via hydraulic sluicing to the ash basin until 2013, when the Mayo Plant converted to
a dry ash system. Final system upgrades were completed in October 2016, all CCR collection is
collected dry. Dry fly ash was hauled and disposed in the landfill located at the nearby Roxboro
Steam Electric Plant (Roxboro Plant) from August 2012 until November 2014 Beginning in
November 2014, CCR from the Mayo Plant has been managed in a newly constructed 31 -acre
on-site landfill located west of the ash basin. Discharge from the ash basin to Mayo Lake is
permitted and regulated by the NCDEQ DWR under NPDES Permit NC0038377

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
2.5 Roxboro Steam Electric Plant
The Roxboro Steam Electric Plant (Roxboro Plant) is located near Semora, in Person County,
North Carolina A large part of the Roxboro Plant property encompasses Hyco Reservoir The
Hyco Reservoir was constructed to provide a source of cooling water for the Roxboro plant
The coal-fired electric generating facility began operations in the 1960s and continued to add
capacity through the 1980s
CCR have historically been managed in two on-site ash basins, with an approximate combined
area of approximately 495 acres, and a lined landfill located south-southwest of Hyco Reservoir
and Hyco Rover Bottom ash is currently sluiced to the West Ash Basin Fly ash has been
handled dry since the late 1980's with beneficial reuse and disposal in the onsite Industrial
Landfill.
The ash basin management area consists of two locations,
The 1966 semi -active East Ash Basin currently receives flows from surface water
runoff, landfill leachate, and yard sumps An approximately 131 -acre active industrial
landfill resides in the East Ash Basin footprint Currently water from the East Ash Basin
and landfill are routed to the West Ash Basin for settling
The 1973 active West Ash Basin currently receives sluiced bottom ash, sluiced fly ash
(approximately 5% of the time), and flow from the East Ash Basin A FGD settling pond
and bioreactor, part of the flue gas desulfurization system, are located on the western
side of the West Ash Basin footprint
Discharge from the West Ash Basin to Hyco Reservoir via a man-made canal is permitted and
regulated by the NCDEQ DWR under NPDES Permit NC0003425
Ash generated from coal combustion has been stored in on-site ash basins and a lined landfill
Ash has been sluiced to the ash basins or conveyed in its dry form to the lined landfill Two ash
basin areas have been used at the Roxboro Plant and are referenced using the date of
construction and relative location the 1966 semi -active East Ash Basin and the 1973 active
West Ash Basin The East Ash Basin is located southeast of the Roxboro Plant, and the West
Ash Basin is located south of the Roxboro Plant. An unlined landfill was constructed on the East
Ash Basin in the late 1980s. A lined landfill was subsequently constructed over the unlined
landfill around 2004 The ash basins are impounded by permitted earthen dams
Currently, the East Ash Basin and lined landfill are largely covered with vegetation (grasses and
shrubs) where the landfill is not active The West Ash Basin has some grass cover and ponded
water, mostly along the southern and eastern edges of the basin Wet ash and runoff from the
East Ash Basin landfill is directed to the West Ash Basin for settling The West Ash Basin
encompasses approximately 200 acres and discharges to a permitted internal outfall (outfall
002) and then by a permitted outfall into Hyco Reservoir (outfall 003).

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
2.6 L.V. Sutton Energy Complex
The L V Sutton Energy Complex (Sutton Plant) is a former coal-fired electric generating facility
located near Wilmington in New Hanover County, North Carolina The facility is located north of
Wilmington on the west side of Highway 421 The topography around the property is relatively
gentle, generally sloping downward toward the Cape Fear River The Sutton Plant utilizes an
approximately 1,100 -acre cooling pond located adjacent to the Cape Fear River The ash
management area is located adjacent to the cooling pond, north of the Sutton Plant The Sutton
Plant started operations in 1954 and consisted of three coal-fired boilers that primarily used
bituminous coal as fuel to produce steam The Sutton Plant coal fired generation units were
retired in 2013 A natural gas fired combined cycle generation unit was constructed on the site
to replace the coal fired units
The Sutton Plant, cooling pond, and ash management area are located on the east side of the
Cape Fear River The ash management area is located adjacent to the cooling pond, north of
the Sutton Plant The ash management area consists of three locations
• The 1971 ash basin is an unlined ash basin built in approximately 1971 The basin
contains fly ash, bottom ash, boiler slag, storm water, ash sluice water, coal pile runoff,
and low-volume wastewater
The 1984 ash basin has a 12 -inch clay liner and was built in approximately 1984 This
basin is located toward the northern portion of the ash management area and was
operated from 1984 to 2013 The basin contains fly ash, bottom ash, boiler slag, storm
water, ash sluice water, coal pile runoff, and low volume wastewater
The ash basins are impounded by an earthen dike CCR removal from the ash basins and
placement in the Brickhaven structural fill was on-going during 2016 and through June 2017
when shipments of ash to Brickhaven were ceased Sutton then began disposing of ash into the
on-site landfill as Cell 3 received its permit to operate on July 6, 2017, Cell 4 received its permit
to operate on August 25 2017; and Cell 5 received its permit to operate on December 7, 2017
Wastewater discharge from the Sutton Plant to the Cape Fear River is permitted and regulated
by the NCDEQ DWR under the NPDES Permit NC0001422
2.7 W.H. Weatherspoon Plant
The W H Weatherspoon Plant (Weatherspoon Plant) is a former coal-fired electric generating
facility located in Robeson County, North Carolina, near the city of Lumberton The
Weatherspoon Plant started operations in 1949. Two additional units were added in the 1950s
Four oil- and natural gas -fueled combustion turbines were added in the 1970s As of October
2011, all of the coal-fired units were retired The four oil- and natural gas -fueled units continue
to operate as needed to meet peak demand The facility is located southeast of Lumberton on
the east side of North Carolina Highway 72. The topography around the property generally
slopes downward toward the Lumber River.
The Weatherspoon Plant, cooling pond, and ash basin are located on the east side of the
Lumber River The ash basin is located north of the cooling pond and northeast of the
Weatherspoon Plant power plant site The ash basin covers an area of approximately 65 acres

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
The Weatherspoon Plant cooling pond covers an area of approximately 225 -acres and is
located adjacent to the Lumber River
The Weatherspoon Plant NPDES permit (NC005363) authorizes and regulates the discharge of
recirculated cooling water, ash sluice water, domestic wastewater, chemical metal cleaning
water, and low volume wastewater from the cooling pond via Outfall 001 to the Lumber River
under severe weather conditions and cooling pond maintenance
The ash basin is impounded by an earthen dike Ash generated from historic coal combustion is
stored on-site in the ash basin Treated water flows from the ash basin to the cooling pond
through an engineered pathway from the ash basin into the northeast corner of the cooling
pond.

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
Section 3 — Surface Water Sampling Summary
The NPDES program regulates wastewater discharges from ash basins to surface waters to
assure that surface water quality standards are maintained Surface water discharges are
Identified and evaluated to locate potential outfalls for Inclusion in the permit The NPDES
permitting program requires that permits be renewed at least every five years
Routine surface water monitoring was performed in 2017 in accordance with each site's NPDES
permit conditions and CAMA Table 3-1 below summarizes the 2017 routine surface water
quality sampling conducted at the seven Duke Energy Progress, LLC coal-fired steam stations
described in Section 2
Table 3-1. Duke Energy Coal -Fired Steam Stations 2017 Surface Water Quality Sampling
Station
Water Quality'
Water ChemistryZ
Trace Elements3
Asheville Plant
X
X
Fish muscle tissue
Cape Fear Plant
X
X
Fish muscle tissue
Lee Plant
X
X
Fish muscle tissue
Mayo Plant
X
X
Fish muscle tissue,
sediments
Roxboro Plant
X
X
Fish muscle tissue,
sediments
Sutton Plant
X
X
Fish muscle tissue,
sediments
Weatherspoon Plant
X
X
Fish muscle tissue
'Temperature, dissolved oxygen, conductivity, pH, and secchi disk transparency depth (at lake
stations only)
2Total alkalinity, total dissolved solids, and turbidity Ions included chloride, sulfate, calcium,
magnesium, and sodium Trace elements (total and dissolved) included antimony (Mayo),
arsenic, boron (Asheville, Mayo, and Roxboro), cadmium (Cape Fear, Lee, Mayo, Sutton, and
Weatherspoon), calcium, chromium (Mayo and Sutton)copper, lead (Mayo and Sutton) ,
manganese (Cape Fear, Lee, Mayo, Roxboro, and Weatherspoon), magnesium, mercury,
molybdenum (Cape Fear, Lee, Mayo, and Weatherspoon), selenium, sodium, thallium (Cape
Fear, Lee, Mayo, Roxboro, and Weatherspoon, and zinc (Mayo and Sutton) Nutrients included
total phosphorus, total nitrogen, nitrate -nitrite, ammonia, and total organic carbon
3 Total arsenic, selenium, and mercury

Duke Energy Carolinas, LLC 12017 Surface Water Protection and Restoration Annual Report
Section 4 — Surface Water Protection and
Restoration Summary
In 2017, Duke Energy identified and submitted a number of documents and undertook a number
of actions to comply with the CAMA requirements Documents submitted and additional
activities of note undertaken in 2017 are listed below-
• Obtained renewed NPDES permit for L V Sutton plant
• Commisioned onsite landfill for ash disposal at L V. Sutton plant
• Submitted numerous responses to requests for additional information related to various
NPDES permit applications
• Submitted Special Order by Consent application related to seepage for Asheville, Cape
Fear, HF Lee, Mayo, Roxboro and Weatherspoon facilities
• Made significant progress on construction of systems and treatment needed to support
replacement of ash basins in accordance with deadlines established in NC law at
Roxboro and Mayo
• Announced Beneficiation of ash project at H F Lee Energy Complex and Cape Fear
• Conducted weekly and annual dam inspections.
• Made progress towards providing alternate driinking water options to neighbors of ash
basins as required by NC law
• Continued transport of coal ash from basins at L V Sutton Energy Complex and
Asheville Plant
• Identified additional potential areas of wetness in proximity to ash basins and provided
information on these areas to the North Carolina Department of Environmental Quality
(DEQ)
• In accordance with authorization received from DEQ, continued decanting activities at
L V Sutton Energy Complex
• Worked with regulatory agency to restart decanting of ash basin at HF Lee
• Completed initial 1978 and 1985 ash basin decanting at Cape Fear.
• Completed excavation of Asheville 1982 basin and began construction of replacement
generation natural gas fired combined cycle plant
• Began ash transport from Weatherspoon for reuse activities in September 2017
Upcoming commitments related to the CAMA include
• End stormwater discharge to impoundments at retired plants consistent with the
requirements of N C G S § 130A-309 210(c)
• Complete excavation of impoundments at Asheville Plant and L V Sutton Energy
Complex
• End stormwater and wastewater discharge to impoundments at active plants consistent
with the requirements of N.0 G S § 130A-309 210(c)
• Develop and install new ash handling methods as ash basins are closed
11

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
• Close basins as required by CAMA and in accordance with performance standards set
out in the federal coal combustion residuals rule to the extent of Its applicability to a
particular station
Finalize and comply with Special Order by Consent related to seepage for Roxboro,
Mayo, H F Lee, Cape Fear, Weatherspoon and Asheville plants
• Obtain and comply with NPDES wastewater renewal permits for Roxboro, Mayo, H F
Lee, Cape Fear, Weatherspoon and Asheville plants

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
Section 5 — Discharge Identification Status
The Discharge Identification Plans submitted in September 2014 for all seven (7) DEP sites
addressed the requirements of N C G S § 130A-309 212(d), Identification and assessment of
discharges; correction of unpermitted discharges Inspection procedures developed to satisfy
the requirements of N C G S § 130A-309 212(d) were presented In these plans and used as the
basis for developing the topographic map required by N C G S. § 130A-309 212(a)(2) These
documents were submitted to DEQ on September 30, 2014 for all seven (7) DEP plants
described in Section 2 In 2017, Duke Energy Implemented the procedures outlined in the
previously submitted Discharge Identification Plans

Duke Energy Progress, LLC 12017 Surface Water Protection and Restoration Annual Report
Section 6 — Discharge Assessment Status
Duke Energy submitted the required Topographic Map and Discharge Assessment
Plans to DEQ on December 30, 2014 The plan addressed the requirements of
N.C.G S § 130A -309.212(a)(2), topographic map, and (b), Assessment of Discharges
from Coal Combustion Residuals Surface Impoundments to the Surface Waters of the
State The elements required In N C G S § 130A-309 212(a) were incorporated into the
plan. These documents were submitted to DEQ on December 30, 2014 for all seven (7)
DEP stations described in Section 2 During 2017, Duke Energy provided sampling data
to DEQ of potential discharges from coal combustion residual surface impoundments.
Duke Energy participated in numerous meetings and site visits with DEQ staff In
evaluating such potential discharges