NCS000020_Fact Sheet Binder_20220725

DEQ / DEMLR
FACT SHEET FOR NPDES INDUSTRIAL INDIVIDUAL
STORMWATER PERMIT DEVELOPMENT
Basic Information for Permit Issuance and Renewals:
Permit Writer / Date
Brianna Young 7/20/2022
Permit Number
NCS000020
Owner / Facility Name
Duke Energy Carolinas, LLC / McGuire
Nuclear Station
SIC Code / Category
4911 / Nuclear Power Generation
Basin Name / Sub -basin number
Catawba / 03-08-32
Receiving Stream / HUC
Lake Norman / 30501011204
UT to Catawba River / 30501011402
Stream Classification / Stream Segment
WS-IV, B; CA / 11- 75
Is the stream impaired on 303 d list]?
Yes - See Section 2 below
Any TMDLs?
Yes - See Section 2 below
Any threatened and/or endangered species?
See Section 2 below
Any compliance concerns?
See Section 2 (below)
Any permit mods since lastpermit?
Yes - See Section 1 below
New expiration date
8/31/2027
Comments on Draft Permit?
See Section 6 below
Section 1. Facility Activities and Process:
The McGuire Nuclear Power Plant is a 2 unit electric generation plant. The site is 580
acres with a 30 acre plant yard and bound on the west by the Catawba River and to the
north by Lake Norman. The site topography is generally flat. The site is broken down
into 5 distinct drainage areas:
• Area #1: Discharge Canal Drainage Area and comprised of SW outfalls 3, 4, 5,
15, 16, 17, 18, 19, 20, 21, and 22
• Area #2: Plant Area and comprised of SW outfall 001.
• Area #3: Low Level Intake Area and comprised of SW outfall 002
• Area #4: McGuire Garage and comprised of SW outfall 008
• Area #5: McGuire Switchyard and comprised of SW outfalls 6, 7, 9, 10, 11, 12,
13, 14, 23, 24, 25, 26, 27, 28, 37, and 38
The site has 37 active outfalls. Representative Outfall Status (ROS) has been granted for
the following:
• Outfalls SW003, SW005, SW015, SW016, SW017, SW018, SW019, SW020,
SW021, SW022 were granted ROS with SW004.
• Outfalls SW024, SW025, SW026, SW027, SW028, and SW037 were granted
ROS with SW006.
• Per a letter dated 8/28/1998, SWO04 and SWO06 were approved as ROS for
SW003, SW005, SW007, SW009-SW032, and SW037.
• Per a letter dated 8/10/2007, no sampling required for SW001 as it was covered
under wastewater permit NCO024392 as Outfall 005, SWO04 and SWO06 were
approved as ROS for SW003, SW005, SW007, SW009-SW032, and SW037, and
sampling could be discontinued for SWO02 and SWO03-SWO36 as there was no
stormwater associated with industrial activity.
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• Per an email dated 4/25/2013, SW038 was added and ROS was requested for this
new outfall to be identical to SW006 (which also had ROS for SW025, SW026,
SW027, SW028, SW037, SW007, SW009, SWO10, SWO11, SW012, SW013, and
SW023). SW038 is a new outfall created by rerouting outfalls SW014 and SW024
to the oil and water separator as part of SPCCC upgrades in the switchyards. Per
letter dated 8/29/2013, ROS was granted.
Per an email dated 4/26/2016, 3 basins around the landfill receive area runoff. Duke
proposed monitoring these basins for 2 years to determine if the basins discharge or not.
NCS000020 was stretched to cover this monitoring, with the understanding that if no
discharge observed, monitoring would cease. Per an email follow-up dated 1/11/2022, the
3 sediment collection basins around the landfill were monitored during that 2 year
timeframe and continue to be monitored every 7 days and after every large volume storm
event of more than 1" of rainfall. The facility has not had a storm event that produced a
discharge that overflowed any of the 3 basins.
Per the renewal application dated 6/23/2015, significant stormwater changes include:
• Addition of 2 oil water separators at the McGuire Switchyard for SPCC
compliance, which required routing stormwater outfalls 014 and 024 to the oil
water separators and the creation of Outfall 038. The oil water separators are
designed to capture transformer oil from the interior of the switchyard should a
spill occur.
• 3 FLEX Buildings that house emergency response equipment to safety shut down
the plant in the event of a natural disaster. SW discharges from the buildings are
not significant, however the construction of the buildings required the site to
obtain a construction SW permit.
• No changes in work processes, material handling processes, storage practices, and
raw materials use by the facility.
Per the renewal application dated 6/23/2015, Duke requested the following changes:
• Remove Outfalls 029 (internal to 016), 030 (internal 017), 031 (internal to 018),
and 032 (internal to 015).
o DEQ response: Per a letter dated August 10, 2007, these outfalls were
excluded from analytical monitoring requirements (qualitative monitoring
still required). An email clarification dated January 21, 2022 stated
SW032 would become the new SW015, therefore SW032 should no
longer be a listed outfall in the permit. Per an inspection conducted on
May 17, 2022, the higher numbered outlets are yard inlets or slope drains
that discharge to one of the lower numbered outlets; therefore monitoring
is not required for SW029, SW030, and SW031.
• Remove Outfalls 033-036 as they do not discharge stormwater from an industrial
process.
o DEQ response: Per a letter dated August 10, 2007, these outfalls were
excluded from analytical monitoring requirements (qualitative monitoring
still required). Per an inspection conducted on May 17, 2022, there is no
industrial activity in these drainage areas, therefore monitoring is not
required.
• Renumber outfalls along discharge canal to be somewhat sequential and remove
error traps/confusion for inspections:
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o 003 renumbered to 005
o 005 renumbered to 003
o 032 renumbered to 015
o 015 renumbered to 016
o 016 renumbered to 017
o 017 renumbered to 018
o 018 renumbered to 019
o 019 renumbered to 020
o DEQ response: These outfalls can be renumbered as requested. For
clarification on which monitoring results should be reported for each
outfall in the future, please reference the permit cover letter as well as the
Part D of the permit.
Per an email dated 1/11/2022, the existing SW020 is essentially an internal outfall to the
existing SW019. It is a pipe that discharges to ground and drains to and through SW019.
With the request to renumber the existing SW019 to SW020, Duke states they are
eliminating the existing SW020 outfall so there will be no need for that site to be
renumbered. SW032 is an internal outfall to existing SW015, therefore there should not
be a need to list an outfall SW032 in the renewed industrial stormwater permit. An email
clarification dated 1/21/2022 stated SW032 will become the new SW015, therefore
SW032 should no longer be a listed outfall in the permit.
Per comments submitted on the draft permit dated 7/19/2022, SW015 will not be
renumbered, SW030 will be renumbered to SW016, and SW016 will be renumbered to
SW017. SW030 is in the same vicinity as SW016, therefore the outfall renumbering will
not affect monitoring requirements and is therefore allowed.
Outfall SW001 (Drainage Area #2)
Outfall SW001 is also permitted under NPDES WW Permit NC0024392 as Outfall 005
(Wastewater Collection Basin). Drainage comes from east side of the plant, McGuire
Office Complex, Office Shop Facility, North Administration Building, Dry Canister
Assembly Pad, and Vendor/Contractor Team Trailers. Discharge is to the Standby
Nuclear Service Water Pond. The collected stormwater runoff will overflow to the
wastewater collection basin (WWCB) though an underflow spillway. Drainage from the
west and south sides of the plant discharge directly into the WWCB through various
discharge structures, and the WWCB also receives stormwater runoff from approximately
500 feet of NC Highway 73. Potential pollutants include those listed for Outfall 005 in
permit NC0024392.
Per letter dated 8/10/2007, no sampling is required at Outfall 001. Per email dated
1/11/2022, all SW001 runoff/drainage areas flow through NPDES wastewater permit
NC0024392 Outfall 005, and there is no potential for any runoff or discharge from
Outfall SW001 to be discharged into surface waters.
Outfall SW002 (Drainage Area #3)
Drainage comes from concrete structure and cyclone separator for the Lower Level
Intake Pipe, access roads serving the northwest area of the plant, and inactive farm land.
Letter dated 10/20/1994 stated this outfall would not be sampled as no industrial activity
in the area (per exemption in 40 CFR 122.26(a)(14), and per letter dated 8/10/2007 no
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sampling required as there is no stormwater runoff associated with an industrial activity.
Discharge in this drainage area comes from dam leakage (raw water) and sheet flow.
Potential pollutants include TSS and TRC, and low pH is indicative of groundwater in the
area.
Outfall SW008 (Drainage Area #4)
Drainage comes from a garage that provides vehicle and equipment maintenance
activities. A fenced parking area has approximately 1.5 acres paved and 1.5 acres
graveled. The north parking area slopes towards the building. A concrete trench carries
stormwater to a rip -rap ditch that disperses to a wooded area. The south parking area
slopes towards the rip -rap ditch. Potential pollutants include TSS, diesel fuel, gasoline,
oils, grease, and ethylene glycol.
Outfalls SW003, SW004, SW005, SW015, SW016, SW017, SW018, SW019, SW020,
SW021, and SW022 (Drainage Area #1)
Drainage comes from graveled lay down storage yard, which houses metal, pipe, empty
drums, other miscellaneous materials, and 2 spare transformers for the plant (both have
spill containments).
Outfalls SW015, SW016, SW017, SW018, SW019, SW020, SW021, and SW022 were
added after original submittal of permit application identifying all of the stormwater
discharges. ROS was granted for additional outfalls in letter dated 8/10/2007. Potential
pollutants include iron, copper, oil and grease, and TSS.
Outfalls SW006, SW014, SW024, SW025, SW026, SW027, SW028, SW037 (Drainage
Area #5
Drainage from 230 kV switchyard and access roads. The switchyard also contains an
operating building which contains batteries and electrical equipment. Two large
underground Oil Water Separator Tanks (one 20,000 gallon tank and one 30,000 gallon
tank) have been installed at the switchyard to contain any oil that might result from a
transformer oil spill in the switchyard. Stormwater outfalls SW014 and SW024 have been
rerouted to drain to these oil water separators (now Outfall SW038; see below). Potential
pollutants include oil, grease, and TSS.
230 kV switchyard: Interior floor drains and condensate from the equipment closed
cooling system drain into the operating building sump that is pumped out through outfall
SW006. Batteries containing acid are kept in the operating building inside a room without
a floor drain. The switchyard contains 69 oil filled transformers. None contain PCBs.
Outfalls SW007, SW009, SWO10, SWO11, SW012, SW013, SW023, and SW038
(Drainage Area #5)
Drainage comes from 525 kV switchyard and access roads. Outfalls SW012, SW013, and
SW023 were added after the original submittal of the permit application. ROS was
granted in a letter dated 8/10/2007. Outfalls SW014 and SW024 have been routed to
underground oil water separators and Outfall SW038 was created during rerouting of the
stormwater pipes for Outfalls SW014 and SW024. It carries stormwater from the interior
of the switchyard. ROS was granted for Outfall SW038 with Outfall SW006 in letter
dated 8/29/2013. Potential pollutants include transformer oil, grease, and TSS.
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535 kV switchyard: Oil from oil -cooled transformers (non -PCB) represent only
significant materials in the drainage area of these outfalls. The switchyard is a graveled
area that has a system of yard drains.
Outfalls SW029, SW030, SW031, and SW032 (Internal outfalls; Yard inlets/slope drains)
Permittee has requested removal of these outfalls from the permit. Per information dated
8/9/2007 (information missing from 2015 permit renewal application), Outfalls SW029,
SW030, SW031, SW032 are substantially identical to other outfalls and provide drainage
from a graveled lay down storage yard. Impervious areas include the loading docks, roof
of the Discarded Materials Storage building, paint warehouse, and facilities maintenance
shop. Per an inspection conducted May 17, 2022, the higher numbered outlets are yard
inlets or slope drains that discharge to one of the lower numbered outlets, therefore
monitoring is not required. Potential pollutants include iron, copper, oil and grease, and
TSS.
Outfall SW033 (No industrial activity)
Permittee has requested removal of this outfall from the permit. Per information dated
8/9/2007 (information missing from 2015 permit renewal application), drains to rip rap
embankment behind the discharge structure and a valve pit located inside the plant fenced
security area. The valves are for vacuum priming (VP), and the ZP system is used to
remove air from the RC System (once through cooling water) during startup of the plant.
The piping would only contain raw lake water or air. Potential pollutants include gravel
fines and TSS. The outfall contains no stormwater from an industrial process.
Outfalls SW034 and SW036 (No industrial activity)
Permittee has requested removal of these outfalls from the permit. Per information dated
8/9/2007 (information missing from 2015 permit renewal application), Outfalls SW034
and SW036 drain a rip rap embankment behind the discharge structure to concrete and
metal pipe culverts that divert storm water flow form the embankment under a gravel
road to the discharge canal. There are no materials stored in this area. The embankment is
rip rapped to control erosion. Potential pollutants include gravel fines and TSS. This area
does not include any stormwater discharges from industrial processes.
Outfall SW035 (No industrial acti
Permittee has requested removal of this outfall from the permit. Per information dated
8/9/2007 (information missing from 2015 permit renewal application), drains a valve pit
located inside the plant security fencing. Discharge is below the lake surface at times
depending on the lake level. The valves are for the vacuum priming (VP) system, which
is used to remove air from the RC System (once through cooling water) during startup of
the plant. The piping would only contain raw lake water or air. Potential pollutants
include gravel fines and TSS. The outfall contains no stormwater from an industrial
process.
Old Landfill (Inactive)
This landfill was permanently closed. The landfill stormwater runoff is controlled with
several silt fences. Runoff is directed toward the landfill sedimentation pond. Closed
trenches are covered with at least 2 feet of final cover. Grass is maintained to prevent
erosion.
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Firing Range
Silt fencing, mulch, and grass is permanently maintained to prevent any suspended
fragments from leaving the range. A bullet collection system is used to collect the lead
bullets in the firing range. This area was not identified in the initial stormwater permit
application as the activity was considered separate from the plant's industrial activities.
Landfarm (Inactive)
A 6 acre landfarm is located beyond the switchyard. This area is currently not used. Grass
buffers are maintained around the perimeter of the land farm and all runoff is sheet flow
from the area.
Landfill (Active)
A solid waste landfill is located on the property and accepts waste generated from Duke
facilities across the state. This landfill holds industrial waste (non -hazardous expired
chemical/spill clean up materials and soil), construction and demolition waste, asbestos,
and sludge.
The landfill stormwater runoff is directed to three landfill sediment traps. These traps
receive stormwater from the exterior of the landfill which contains no significant
materials. All stormwater is collected in a leachate collection pond which is pumped to
the MNS WC System's initial holdup pond (NPDES permit NC0024392). Leachate is
controlled by 6 inches of compacted daily cover or a temporary waterproof tarpaulin
during rainy periods.
Island Industrial Lab
An industrial lab on the site was not identified in the initial stormwater permit because
stormwater drained from this area (an island separated from the site) is not mixed with
stormwater drained from the site's industrial activities.
Transformers
Oil cooled transformers are located across the site. A few transformers have the potential
to spill to the lake or river.
Why Industrial Sites with Stormwater are Subject to a Permit: Federal NPDES
regulations define stormwater discharge associated with industrial activity in 40 CFR
§122.26 (b)(14) as: "the discharge from any conveyance that is used for collecting and
conveying storm water and that is directly related to manufacturing, processing or raw
materials storage areas at an industrial plant. The term does not include discharges from
facilities or activities excluded from the NPDES program under this part 122. For the
categories of industries identified in this section, the term includes, but is not limited to,
storm water [sic] discharges from industrial plant yards; immediate access roads and rail
lines used or traveled by carriers of raw materials, manufactured products, waste
material, or byproducts used or created by the facility; material handling sites; refuse
sites; sites used for the application or disposal of process waste waters (as defined at part
401 of this chapter); sites used for the storage and maintenance of material handling
equipment; sites used for residual treatment, storage, or disposal; shipping and receiving
areas; manufacturing buildings; storage areas (including tank farms) for raw materials,
and intermediate and final products; and areas where industrial activity has taken place in
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the past and significant materials remain and are exposed to storm water. For the
purposes of this paragraph, material handling activities include storage, loading and
unloading, transportation, or conveyance of any raw material, intermediate product, final
product, byproduct or waste product. The term excludes areas located on plant lands
separate from the plant's industrial activities, such as office buildings and accompanying
parking lots as long as the drainage from the excluded areas is not mixed with storm
water [sic] drained from the above described areas."
Section 2. Monitoring Information and Compliance History:
April 2011 to September 2021, benchmarks exceeded for:
o TSS: Outfall 004 (lx)
o pH: Outfall 004 (1 x)
303(d) listing:
CATALYBA RIVER (Lake Norman below elevation 760} 11-( WS-IV,B;CA 31,339.4 FW Acres
329 From Lyle Creek to Cowan's Ford Dam
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Turbidity (54 NTU, AL, FW miles) 0 I Exceeding Criteria Exceeding Criteria with Statistical L 242
Confidence
PCB Fish TisweAdvisory (Advisory, FC, NC} 5-16ceedine C JDHHS Fish Consumption Advisory 241
Threatened and Endangered species: No threatened or endangered species are in the
areas of discharge; however, the vascular plant Michaux's Sumac (listed as endangered
for NC and Federal status) is in the area adjacent to the facility.
Section 3. Proposed Monitoring for Stormwater Discharges:
The Division considered potential pollutants from past and present industrial activities
and data that was submitted for April 2011 to September 2021. Quantitative sampling
included PCBs, pH, TSS, TPH, oil and grease, and motor oil usage.
Unlike most stormwater permits in its program, the Division is proposing a permit
structure with outfall-specific monitoring for discharges. Parameters are based on
potential pollutants in the drainage area, sampling results, and in some cases, dependent
upon future activities (e.g., ash removal through the drainage area). Below is a table of
the proposed monitoring for each outfall at the Allen Steam Station McGuire Nuclear
Power Plant site.
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Outfalls SWO03 (formerly SW005), SW004, SWO05 (formerly SW003), SW015,
SWO16 (formerly SW030), SWO17 (formerly SW016),
SWO18 (formerly SW017), SWO19 (formerly SW018), SW020 (formerly SW019),
SW021, and SW022
Total Suspended Solids
Quarterly monitoring
(TSS)
BASIS: Potential pollutant from drainage area and BMP
effectiveness indicator.
pH
Quarterly monitoring
BASIS: Pollutant indicator.
Total Rainfall
Quarterly monitoring
BASIS: Discharge potential indicator.
Non -Polar Oil &Grease
Quarterly monitoring
BASIS: Potential pollutant from lubricants; Method 1664
SGT-HEM targets petroleum -based O&G.
Monthly Oil Usage
Quarterly monitoring
BASIS: Pollutant indicator.
Total Iron
Quarterly monitoring
BASIS: Potential pollutant in drainage areas.
Total Copper
Quarterly monitoring
BASIS: Potential pollutant in drainage areas.
Quarterly monitoring
Total Chromium
BASIS: Potential pollutant in drainage areas.
Quarterly monitoring
Total Lead
BASIS: Potential pollutant in drainage areas.
Quarterly monitoring
Total Nickel
BASIS: Potential pollutant in drainage areas.
Quarterly monitoring
Total Zinc
BASIS: Potential pollutant in drainage areas.
Total Hardness
Quarterly monitoring
BASIS: Monitoring for hardness dependent metal present
PCBs
Quarterly monitoring
BASIS: Potential pollutant in drainage areas.
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Outfalls SW006, SW007, SW008, SW009, SWO10, SWO11, SW012, SW013,
SW023, SW025, SW026, SW027, SW028, SW037, and SW038
Total Suspended Solids
Quarterly monitoring
(TSS)
BASIS: Potential pollutant from drainage area and BMP
effectiveness indicator.
pH
Quarterly monitoring
BASIS: Pollutant indicator.
Total Rainfall
Quarterly monitoring
BASIS: Discharge potential indicator.
Non -Polar Oil &Grease
Quarterly monitoring
BASIS: Vehicle maintenance occurs in drainage area;
Method 1664 SGT-HEM targets petroleum -based O&G
Monthly Oil Usage
Quarterly monitoring
BASIS: Vehicle maintenance occurs in drainage area.
PCBs
Quarterly monitoring
BASIS: Potential pollutant in drainage areas.
Stormwater Benchmarks and Tiered Response: Rather than limits, North Carolina
NPDES Stormwater permits contain benchmark concentrations. Stormwater benchmarks
are numerical action levels for stormwater monitoring. Benchmarks are not effluent
limits, and benchmark exceedances are not permit violations. Benchmarks provide
facilities a tool for assessing the significance of pollutants in stormwater discharges and
the effectiveness of best management practices (BMPs). Benchmark concentrations are
intended as guidelines for the facility's development and implementation of the
Stormwater Pollution Prevention Plan (SWPPP).
Benchmark exceedances require the permittee to increase monitoring, increase
management actions, increase record keeping, and/or install stormwater BMPs in a tiered
program. The permit establishes a tiered approach to specify actions the permittee must
take in response to analytical results above benchmark concentrations. The tiered
structure of the permit provides the permittee and DEMLR wide flexibility to address
issues that may arise with one or more parameters and/or outfalls.
Metals benchmarks are calculated to mimic acute water quality standards and with the
guidance of DWR. NC DWR follows established federal procedures for calculating acute
standards when developing the benchmarks. Just like the acute standards, metals
benchmarks normally reflect one half of the calculated Final Acute Value (the "1/2
FAV"). In most cases, translation into total recoverable values is based on an assumed
hardness of 25 mg/L and a total suspended solids (TSS) concentration of 10 mg/L. Acute
standards protect aquatic life from negative impacts of short-term exposure to higher
levels of chemicals where the discharge enters a waterbody. The Stormwater Permitting
Program applies this approach because of the ephemeral nature of rainfall events.
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The Division may evaluate results to determine if a smaller suite of parameters for some
outfalls is adequate to characterize potential pollution or BMP effectiveness. For
example, one or more metals or other parameters may serve as an adequate tracer for the
presence of ash pollution during disturbance or ash removal in specific drainage areas at
this site. For parameters that do not have a stormwater benchmark, the Division may
develop a benchmark value if appropriate toxicity data become available or if rising
trends in concentrations suggest a persistent source.
A summary of the benchmarks in the draft permit, and their basis, is below:
Parameter
Benchmark
Basis
Total Suspended
100 mg/L
National Urban Runoff Program (NURP) Study,
Solids TSS
1983
H
6 s.u. — 9 s.u.
NC Water Quality Standard (Range)
Non -Polar Oil &
Review of other state's daily maximum
Grease, EPA
15 mg/L
benchmark concentration for this more targeted
Method 1664
O&G; NC WQS that does not allow oil sheen in
SGT-HEM
waters
Total Iron
N/A
No NC water quality standard. Ubiquitous in NC
soils.
'/2 FAV; EPA's National Recommended Water
Quality Criteria (Acute) for dissolved copper,
calculated with assumed 25 mg/L hardness, and
Total Copper
10 µg/L
then converted to total with EPA partition
translator based on assumed 10 mg/L TSS. NC
has 02B standard for saltwater acute dissolved
Copper (CMC = 4.8 /L .
'/2 FAV; Based on (Cr III + Cr VI) acute
Total Chromium
905 µg/L
thresholds and assumption that industrial
activities here are not a source of hexavalent
chromium
Total Lead
75 /L
Acute Aquatic Criterion, '/2 FAV
Total Nickel
335 /L
Acute Aquatic Criterion, '/2 FAV
Total Zinc
126 /L
Acute Aquatic Criterion, '/2 FAV
No standard for total hardness; Per 02B, default
Total Hardness
_
value is 25 mg/L when using to determine water
quality limits for hardness -dependent metals
cadmium, copper, lead, nickel, silver, and zinc).
The aquatic life standard is 0.001 ug/L. The
detection limits for Arochlors 1016, 1221, 1232,
PCBs
Detected
1242, 1248, 1254, 1260, and 1262 are 1 ug/L.
Because current analyses cannot quantify PCBs
below the detection limit, any detection is
considered an exceedance of the benchmark.
Stormwater Pollution Prevention Plan: The proposed permit conditions reflect the
EPA and NC's pollution prevention approach to stormwater permitting. The Division
maintains that implementation of Best Management Practices (BMPs) and traditional
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stormwater management practices that control the source of pollutants meets the
definition of Best Available Technology (BAT) and Best Conventional Pollutant Control
Technology (BCT). The permit conditions are not numeric effluent limitations but are
designed to be flexible requirements for implementing site -specific plans to minimize and
control pollutants in stormwater discharges associated with the industrial activity. Title
40 Code of Federal Regulations (CFR) § 122.44(k)(2) authorizes the use of BMPs in lieu
of numeric effluent limitations in NPDES permits when the agency finds numeric
effluent limitations to be infeasible. The agency may also impose BMP requirements
which are "reasonably necessary" to carry out the purposes of the Act under the authority
of 40 CFR 122.44(k)(3). The conditions proposed in this draft permit are included under
the authority of both of these regulatory provisions. In essence, the pollution prevention
and BMP requirements operate as limitations on effluent discharges that reflect the
application of BAT/BCT.
Flexibility in Tier Responses: Tier Two actions provide an opportunity for the permittee
to propose an alternative monitoring plan for approval by the Region:
• Alternatively, in lieu of steps 2 and 3, the permittee may, after two consecutive
exceedances, exercise the option of contacting the DEMLR Regional Engineer as
provided below in Tier Three. The Regional Engineer may direct the response
actions on the part of the permittee as provided in Tier Three, including reduced
or additional sampling parameters or frequency.
• If pursuing the alternative above after two consecutive exceedances, the permittee
may propose an alternative monitoring plan for approval by the Regional
Engineer.
The permit therefore allows the permittee to petition the Regional Office for monitoring
changes sooner than Tier Three (upon any four benchmark exceedances) and gives
guidance on one option to take. For example, the permittee may request that total copper
only be monitored semi-annually under the tiers, or that only parameters over the
benchmark be monitored more frequently. In this way, changes to the monitoring scheme
for any outfall could be handled outside of a permit modification.
Other Proposed Requirements:
• It is standard for Stormwater Pollution Prevention Plan (SWPPP) requirements to
include an annual certification that stormwater outfalls have been evaluated for
the presence of non-stormwater discharges, and if any are identified, how those
discharges are permitted or otherwise authorized.
• Requirement to submit a request for permit modification if the facility identifies
or creates any new outfalls, removes outfalls, or alters any drainage area that
changes potential pollutants.
• The Division expects the permittee to apply best professional judgment and
consider the safety of its personnel in fulfilling sampling obligations under the
permit.
• Proposed federal regulations will require electronic submittal of all discharge
monitoring reports (DMRs). If a state does not establish a system to receive such
submittals, then permittees must submit DMRs electronically to the EPA.
• Quarterly QualitativeNisual Monitoring to assure regular observation of outfalls
throughout year.
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Section 4. Changes from previous permit to draft:
• Monitoring increased from semi-annually to quarterly for all parameters
(qualitative and quantitative)
• "No discharge" clarifications made
• 'No
requirement added
• Boilerplate language moved into body of the permit; boilerplate no longer
attached
• Outfalls have been identified and specific monitoring applied
• Outfalls have been renumbered per permit cover letter request
• Iron and copper added to monitoring for Outfalls 3, 4, 5, 15, 16, 17, 18, 19, 20,
21, and 22 per potential to be discharged per renewal application
• Chromium, lead, nickel, and zinc added for Outfalls 3, 4, 5, 15, 16, 17, 18, 19, 20,
21, and 22 as scrap metal is present and the source of the scrap metal is unknown
o Can be considered for removal at next renewal
• Hardness monitoring added for Outfalls 3, 4, 5, 15, 16, 17, 18, 19, 20, 21, and 22
as monitoring for copper (hardness dependent metal) now required
• Clarified PCB monitoring not needed for SWO06 as none of the transformers in
the drainage area contain PCBs
Section 5. Changes from draft to final:
• SW015 has been modified to reflect no changes in renumbering (SW032 has been
removed per May 2022 inspection report)
• SW016 has been modified to reflect renumbering from SW030 and not SW015
(per comments on draft permit and review of permit file)
• Additional outfalls language updated to reflect more accurate outfall descriptions
Section 6. Discussions with the Facility and Regional Office:
• Initial contact with facility: 1/7/2022
• Initial contact with Regional Office: 12/3/2021
• Draft sent to CO peer review: 1/26/2022
• Draft sent to Regional Office: 2/22/2022
• Final permit sent for supervisor signature: 7/20/2022
Section 7. Comments received on draft permit:
• John Ballard (Duke Energy; via email 6/28/22):
o It is listed in the draft that Outfall SW032 shall be renumbered to Outfall
SW015. This is incorrect. We do not need to renumber SW032, we need to
delete SW032. We will be leaving SWO15 as is since SW032 is internal to
SW015.
Page 12 of 13

■ DEQ response: This change was made in the draft permit based
on information provided on the permit application submitted in
2015. Outfall SW015 has been updated to show no renumbering
from SW032.
o It is also stated in the draft that Outfall SW015 shall be renumbered to
Outfall SW016. This is incorrect. We do not need to renumber SW015 to
SW016. SW015 will stay as SW015. It is actually SW030 that will be
renumbered to SW016.
■ DEQ response: This change was made in the draft permit based
on information provided on the permit application submitted in
2015. After reviewing information in the permit file, Outfall
SW016 has been updated to show renumbering from SW030.
Page 13 of 13

Young, Brianna A
From: Bednarcik, Jessica L <[e-mail]>
Sent: Monday, July 25, 2022 9:31 AM
To: Young, Brianna A
Subject: RE: [EXTERNAL] Issued NPDES Permit McGuire Nuclear Power Plant (NCS000020)
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Confirmed.
From: Young, Brianna A <[e-mail]>
Sent: Monday, July 25, 2022 9:26 AM
To: Bednarcik, Jessica L <Jessica.Bed [e-mail]>
Cc: Ballard, John G <[e-mail]>; Beaver, Gregory T <[e-mail]>; Safrit,
Don <[e-mail]>; Winston, Cynthia C <[e-mail]>
Subject: RE: [EXTERNAL] Issued NPDES Permit McGuire Nuclear Power Plant (NCS000020)
Good morning,
Attached is the issued NPDES permit for the McGuire Nuclear Power Plant (NCS000020). Please respond to this email
confirming that you received the attached document, were able to open and view the document, and have
saved/printed a copy for your records.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
appreciate your patience as we continue to serve the public during this challenging time.
From: Bednarcik, Jessica L <Jessica.Bed [e-mail]>
Sent: Monday, July 25, 2022 9:23 AM
To: Young, Brianna A <[e-mail]>
Cc: Ballard, John G <[e-mail]>; Beaver, Gregory T <[e-mail]>; Safrit,

Don <[e-mail]>; Winston, Cynthia C <[e-mail]>
Subject: RE: [EXTERNAL] Issued NPDES Permit McGuire Nuclear Power Plant (NCS000020)
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna,
When transmitting electronic documents, please include all personnel in the "CC" line.
Thank you,
Jessica L Bednarcik, PE, PMP I Duke Energy
SVP EHS & CCP
526 S. Church Steet I Mail Code EC05A I Charlotte, NC 28202
Office: 704.382.8768 1 Mobile: [phone] [e-mail]
From: Young, Brianna A <[e-mail]>
Sent: Monday, July 25, 2022 9:13 AM
To: Bednarcik, Jessica L <Jessica.Bed [e-mail]>
Cc: Ballard, John G <[e-mail]>; Beaver, Gregory T <[e-mail]>; Safrit,
Don <[e-mail]>
Subject: [EXTERNAL] Issued NPDES Permit McGuire Nuclear Power Plant (NCS000020)
Good morning,
In order to provide more convenience, control, and security to our permittees and assist them in processing their
transactions, the Division of Water Resources is currently transitioning towards electronic correspondence. This will
hopefully provide more efficient service to our permittees and other partners and will allow us to more effectively
process and track documents. We are writing to ask you for your approval of the transmittal of documents related to
your permitting and related activities with the Division in an electronic format. Documents will be emailed to the
appropriate contact person(s) in your organization in a PDF format.
Please respond to me through email with verification that transmittal of your documents in an electronic manner is
acceptable to you. If you have any questions, please feel free to contact me.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612

Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
appreciate your patience as we continue to serve the public during this challenging time.

AFFIDAVIT OF PUBLICATION
Account #
Order Number
Identification
Order PO
Amount
Cols
Depth
38106
275667
Print Legal Ad - IPL0076967
$636.66
2
26 L
Attention: Paul Clark
NC DENR ENGERGY MINERAL & LAND RESOURCES
1612 MAIL SERVICE CENTER
RALEIGH. NC 276991612
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
INTENT TO ISSUE NPDES STORMWATER DISCHARGE PERMITS
The North Carolina Environmental Management Commission proposes to issue
NPDES stormwater discharge permit(s) to the person(s) listed below. Public
comment or objection to the draft permits is invited. Written comments regarding
the proposed permit will be accepted until 30 days after the publish date of this
notice and considered in the final determination regarding permit issuance and
permit provisions. The Director of the NC Division of Energy, Mineral, and Land
Resources (DEMLR) may hold a public hearing should there be a significant
degree of public interest. Please mail comments and/or information requests to
DEMLR at 1612 Mail Service Center, Raleigh, NC 27699-1612.
Duke Energy Carolinas, LLC [12700 Hagers Ferry Road, Huntersville, INC
28078] has requested renewal of permit NCS000020 for the McGuire Nu-
clear Power Plant in Mecklenburg County. This facility discharges to Lake
Norman and an unnamed tributary to the Catawba River in the Catawba
River Basin.
Interested persons may visit DEMLR at 512 N. Salisbury street, Raleigh, INC
27604 to review information on file. Additional information on NPDES permits
and this notice may be found on our website: hftps://deq.nc.gov/about/divi-
s ions/e nergy-m i neral-and -land -resou rces/stormwater/stormwate r-program/
stormwater-public-notices, or by contacting Brianna Young at brianna.young @
ncdenr.gov or 919-707-3647.
IPL0076967
Jun 12 2022
North Carolina } SS
Mecklenburg County }
Before the undersigned, a Notary Public of said
County and State, duly authorized to administer
oaths affirmations, etc., personally appeared,
being duly sworn or affirmed according to law,
cloth depose and say that he/she is a
representative of The Charlotte Observer
Publishing Company, a corporation organized and
doing business under the laws of the State of
Delaware, and publishing a newspaper known as
The Charlotte Observer in the city of Charlotte,
County of Mecklenburg, and State of North
Carolina and that as such he/she is familiar with
the books, records, files, and business of said
Corporation and by reference to the files of said
publication, the attached advertisement was
inserted. The following is correctly copied from
the books and files of the aforesaid Corporation
and Publication.
No. of Insertions: 1
Beginning Issue of: 06/12/2022
Ending Issue of: 06/12/2022
In Testimony Whereof I have hereunto set my hand
and affixed my seal on the 13th day of June,2022
5&J�7_� a"4d
Notary Public in and for the state of Texas, residing in
Dallas County j 31= pum
f •:
Extra charge for lost or duplicate affidavits.
Legal document please do not destroy!

Compliance Inspection Report
Permit: NCS000020 Effective: 01/01/11 Expiration: 12/31/15 Owner: Duke Energy Carolinas LLC
SOC: Effective: Expiration: Facility: McGuire Nuclear Power Plant
County: Mecklenburg NC Hwy 73
Region: Mooresville
Huntersville NC 28078
Contact Person: Angela M Grooms Title: Phone: [phone]
Directions to Facility:
System Classifications: SWNC,
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 05/17/2022
Primary Inspector: Lily C Kay
Secondary Inspector(s):
Entry Time 09:45AM
Reason for Inspection: Routine
Permit Inspection Type: Stormwater Discharge, Individual
Facility Status: ❑ Compliant ❑ Not Compliant
Question Areas:
Other
(See attachment summary)
Certification:
Phone:
Exit Time: 10:30AM
Phone: [phone]
Inspection Type: Technical Assistance
Page 1 of 3

Permit: NCS000020 Owner - Facility: Duke Energy Carolinas LLC
Inspection Date: 05/17/2022 Inspection Type : Technical Assistance Reason for Visit: Routine
Inspection Summary:
This partial inspection was conducted to field verify information for the permit reissuance specifically for the removal of
several internal outfalls and outlets without industrial activity. These outlets and outfalls are in the northern section of the
plant and the higher numbered outlets are yard inlets or slope drains that discharge to one of the lower numbered outlets.
An example is that SW029 flows to SW015. Therefore, the higher numbered outfalls can be removed. Outlets SW033-035
are in the wastewater discharge area, but do not have any industrial activity associated with them because the stormwater
from the main plant goes to a stormwater pond on the west side of the plant. The only outlet with analytical sampling in the
northern section currently is SW004, but there is a large metal storage yard adjacent to the drainage area for outlet SWO04
that needs to be sampled for metals to determine their presence in the stormwater runoff. SW015, SW016, or SW017
could be used for a representative outlet for this area. If you have any questions, please contact me at
Lily. [e-mail] or by phone at [phone].
Page 2 of 3

Permit: NCS000020
Inspection Date: 05/17/2022
Other
Comment:
Owner - Facility: Duke Energy Carolinas LLC
Inspection Type : Technical Assistance Reason for Visit: Routine
Yes No NA NE
Page 3 of 3

Young, Brianna A
From: Beaver, Gregory T <[e-mail]>
Sent: Tuesday, July 19, 2022 12:29 PM
To: Young, Brianna A
Cc: Ballard, John G
Subject: [External] RE: McGuire Nuclear Station Storm Water Permit NCS000020 Draft
Attachments: ISWO04 Discharge Canal Area jpg
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Hi Brianna,
John is on vacation until Monday the 251", so I can respond to your question. SWO15 will remain the same with no
changes. SW030 will be renumbered to SW016. Existing SWO16 will be renumbered to SW017.
So we should have SW015, SW016, and SWO17 moving forward, and no SW030 after the new Permit is issued. I
attached a Google Earth View with the proposed changes in the Outfalls labeled.
I hope this helps to clarify.
Thank You
Greg Beaver
SR. Environmental Professional I McGuire Nuclear Station
Office 980.875.2287 1 Cell 704.642.6845
12700 Hagers Ferry Rd (MG01EM)
Huntersville, NC 28078
[e-mail]
DUKE
ENERGY,
ERGY,
From: Ballard, John G <[e-mail]>
Sent: Monday, July 18, 2022 8:16 PM
To: Beaver, Gregory T <[e-mail]>
Subject: Fwd: McGuire Nuclear Station Storm Water Permit NCS000020 Draft
Sent from my Verizon, Samsung Galaxy smartphone
Get Outlook for Android
From: Young, Brianna A <[e-mail]>
Sent: Monday, July 18, 2022 12:56:33 PM
To: Ballard, John G <[e-mail]>
Subject: RE: [External] McGuire Nuclear Station Storm Water Permit NCS000020 Draft
Good afternoon John,

7
}� {
XM 2

I am working to finalize the McGuire Nuclear Station Permit NCS000020. The changes you mention in your comments
were based on information submitted with the 2015 renewal application (see below). I am a little confused now as to
how the renumbering should be done for SW015, SW016, SW017, and SW030. Is SWO16 still being renumbered to
SW017? Is SW030 is internal to SW017?
Remove outfall 29, 30, 3 1 : 32. These are internal autfalls as follows,
OutfaU 29 internal to 16
Outfall 30 internal to 17
(A tfall 31 internal to IS
Outfall 32 internal. to 15
Removal of Outfa]ls 33 — 36. These autfalls do not discharge starmwater from an
industrial procm. These were removed by letter from NCDENR dated August 10, 2007_
See Attachment # 2 to the Supplemental Information.
Re -number Outfalls along the discharge canal so they will be somewhat Rquential and
remove error traps I confusion for inspections.
Outfall 003 re -numbered to 005
Outfall 005 re -numbered to 003
Oulfall 032 renumbered to 015
Outfall 015 renumbered to 016
00611016 re -numbered to 017
Outfall 017 re -numbered to 019
OutWl 018 renumbered to 019
Outfall 019 re -numbered to 020
Please provide clarification on the outfall renumbering.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
appreciate your patience as we continue to serve the public during this challenging time.
From: Ballard, John G <John.Ballard @duke-energy.com>
Sent: Wednesday, June 29, 2022 10:20 AM
To: Young, Brianna A <[e-mail]>
Subject: RE: [External] McGuire Nuclear Station Storm Water Permit NCS000020 Draft

CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
I will be out of the country starting tomorrow for a few days into early next week. If a question comes up while I am
gone, please contact Don and he should be able to answer any question. But I will be back just after the 5t" if something
isn't immediate.
Thank you,
John Ballard
Lead EHS Professional I McGuire Nuclear Station
Office 980.875.5227 1 Cell 704.530.3957
12700 Hagers Ferry Rd (MG01EM)
Huntersville, NC 28078
John. Ballard (a)duke-energy.com
(� DUKE
ENERGY
From: Young, Brianna A <[e-mail]>
Sent: Wednesday, June 29, 2022 9:38 AM
To: Ballard, John G <[e-mail]>
Cc: Beaver, Gregory T <[e-mail]>; Hawkins, Randy <[e-mail]>;
Safrit, Don <[e-mail]>
Subject: RE: [External] McGuire Nuclear Station Storm Water Permit NCS000020 Draft
John,
Thank you for submitting comments on the draft permit. I will reach back out if I have any questions on these
comments.
Thank you,
Brianna Young, MS (she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604

Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
appreciate your patience as we continue to serve the public during this challenging time.
From: Ballard, John G <[e-mail]>
Sent: Tuesday, June 28, 2022 10:55 AM
To: Young, Brianna A <[e-mail]>
Cc: Beaver, Gregory T <[e-mail]>; Hawkins, Randy <[e-mail]>;
Safrit, Don <[e-mail]>
Subject: [External] McGuire Nuclear Station Storm Water Permit NCS000020 Draft
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Hi Brianna,
I have looked over the McGuire Draft Storm Water Permit and have a few changes we need to address.
It is listed in the draft that Outfall SW032 shall be renumbered to Outfall SWO15. This is incorrect. We do not need to
renumber SW032, we need to delete SW032. We will be leaving SWO15 as is since SW032 is internal to SWO15.
It is also stated in the draft that Outfall SWO15 shall be renumbered to Outfall SW016. This is incorrect. We do not need
to renumber SWO15 to SW016. SWO15 will stay as SWO15. It is actually SW030 that will be renumbered to SW016.
I have reviewed the entire draft and these are the only changes we see that need to be made at this time. If you have
any further questions, please reach back out to myself, Greg, Don, or Randy and one of us should be able to help.
Thank you,
John Ballard
Lead EHS Professional I McGuire Nuclear Station
Office 980.875.5227 1 Cell 704.530.3957
12700 Hagers Ferry Rd (MG01EM)
Huntersville, NC 28078
John.Ballard(@c!uke-eneray.com
f
� DUKE
ENERGY

Young, Brianna A
From: Ballard, John G <John.Ballard @duke-energy.com>
Sent: Tuesday, June 28, 2022 10:55 AM
To: Young, Brianna A
Cc: Beaver, Gregory T; Hawkins, Randy; Safrit, Don
Subject: [External] McGuire Nuclear Station Storm Water Permit NCS000020 Draft
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Hi Brianna,
I have looked over the McGuire Draft Storm Water Permit and have a few changes we need to address.
It is listed in the draft that Outfall SW032 shall be renumbered to Outfall SWO15. This is incorrect. We do not need to
renumber SW032, we need to delete SW032. We will be leaving SWO15 as is since SW032 is internal to SWO15.
It is also stated in the draft that Outfall SWO15 shall be renumbered to Outfall SW016. This is incorrect. We do not need
to renumber SWO15 to SW016. SWO15 will stay as SWO15. It is actually SW030 that will be renumbered to SW016.
I have reviewed the entire draft and these are the only changes we see that need to be made at this time. If you have
any further questions, please reach back out to myself, Greg, Don, or Randy and one of us should be able to help.
Thank you,
John Ballard
Lead EHS Professional I McGuire Nuclear Station
Office 980.875.5227 1 Cell 704.530.3957
12700 Hagers Ferry Rd (MG01EM)
Huntersville, NC 28078
John. Ballard (c�duke-energy.com
tn ENERGY

Young, Brianna A
From: Safrit, Don <[e-mail]>
Sent: Thursday, January 20, 2022 1:01 PM
To: Young, Brianna A
Cc: Beaver, Gregory T; Ballard, John G
Subject: RE: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
Attachments: Approval of Representative Outfall Status 8-10-2007.pdf; Outfall 038 Representative
Outfall Status 9-4-2013.pdf, NPDES SW Permit Summary Report MNS_changes.pdf;
MNS Stormwater Outfall Lat Long Coordinates.xlsx
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna,
We have pulled together the information requested below and have addressed as follows:
Coordinates for each outfall — see attached excel spreadsheet document (including Representative Outfall Status
letters dated 08.10.2007 & 09.04.2013 )
2. Outfall clarification — SW32 will become the new SW15. SW32 will no longer be a listed outfall.
3. Contact updates — see attached marked -up version of the online summary report which was used to document
appropriate changes (strike -out = delete; underline = add/correct).
Please let us know if any additional questions / clarifications are needed. Again, we would appreciate the opportunity to
review a preliminary draft of the permit before it is sent out to public notice.
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
DUKE
EE#
From: Young, Brianna A <[e-mail]>
Sent: Thursday, January 13, 2022 9:26 AM
To: Safrit, Don <[e-mail]>
Cc: Beaver, Gregory T <[e-mail]>
Subject: RE: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
Good morning,
I apologize for the second email. I also wanted to ask if you could provide the coordinates for each outfall? I will need to
add all the outfalls into our database (there appears to be about 30 active outfalls) and assign Representative Outfall
Status (if appropriate). We currently only have coordinates for outfalls SW004, SW006, and SW008.

Thank you,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred during State of Emergency)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with
the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.
From: Young, Brianna A
Sent: Thursday, January 13, 2022 9:21 AM
To: Safrit, Don <[e-mail]>
Cc: Beaver, Gregory T <[e-mail]>
Subject: RE: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
Good morning Don,
Thank you for providing this information. I have one follow-up question: You stated outfall SW032 is internal to SWO15.
If outfall SWO15 is being renumbered to SW016, do you mean that SW032 is internal to the newly renumbered SWO16
(formerly SWO15)? Or will SW032 become the new SWO15 (which seems to be the request with the renewal
application)?
Also, our database has a number of contacts listed for the McGuire Nuclear Station. Can you please review the list below
and confirm if any changes are needed?

EhW
'AffilMon TYPO
NSM0
Tile
Phodd NuMbet
Facility
Contort Person
Ra . TAonm D.
Silo vice Presipem
( 875-4805
Owni�r
Contact Person
130t1dns. HenryA_ Jr
Dd d)-1019
Owner
Coplact Person
Cahoon, Stm
(BUg 5L fi 7457 `
ovmer
Contact Person
Draovilcti, Panel
{g80 V10408
Owner
Conlad Person
Drao+etci. Paul
960 373-040R
Owner
Contact Person
Furlong. Leo A III
96 3734911
Owner
Contact Person
Gaddy, Rodney
Administrative Services
(7-A) 92-5591
Owr"
Contact Person
Glenn, Eilzarre(h
(M 373-0630
Owrtar
Conlad Person
Goodman. Ronnia
(812.) &W1155
Owrkar
conlact Person
Hodges. Stems D.
i828 5,57-2000
Omer
Contact Person
Johnson, KA Mn S,
(704 U2-0951
Owner
Owner — -
Contact Person
Contact Person
McCabe, WJ.
Mr-Elmurg, Gfe 0
lid)2t 4A879
Owner
Contact Person
Pant, Maur
[phone]
Owner
Contact Person
Rouse. Eric
98D 373-2436
Owrref
Contract Person
Sindair, Travi9
04 382-6920
ownef
contact Person
T or, Robert E.
_ _
Pro ect Manager- Corpararte Real Estate seNcea
(7m) 382-6227
Owner
Contact Person
TQriie. 1,nri
Owrtef
Contact Person
ettri_ Randy N.
-04 5T7-5907
DMOF
C r*@ tParaan
Wnsion Cynthia
919 UM538
Owner
Oarmtactpersm
vllise.aanathan
(980) V3,E63I
Owner
Omer
Eednarolrc Jessica
[phone]
Remo
Pef+741
lContacIFIRSOC
lHas Perrrlll Srgriatu..
Groarns,Anuela M.
Kammer, Jim
Swek Assuiance manager
(7134) 675-5958
904) 87�--5894
Pemvl
.I_139 Permitsidnatu .
Pew. Regis
Station ktanner
[phone]
Pemul Has Permit Si natu_..
lWilliams, L@B N.
`ErrvHaallh and Salety Manager
[phone]
Thank you,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred during State of Emergency)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with
the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.
From: Safrit, Don <[e-mail]>
Sent: Tuesday, January 11, 2022 12:47 PM
To: Young, Brianna A <[e-mail]>
Cc: Beaver, Gregory T <[e-mail]>
Subject: RE: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.

Oops! Forgot to include this!
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
* DUKE
ENERGY#
From: Safrit, Don
Sent: Tuesday, January 11, 2022 12:45 PM
To: 'Young, Brianna A' <[e-mail]>
Cc: Beaver, Gregory T <[e-mail]>
Subject: RE: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
Brianna,
Per your request below, the following are responses to your questions:
"Per notes in our permit history file, stormwater Outfall 001 is covered under an NPDES wastewater permit as part of
wastewater Outfall 005. Can you confirm if any runoff or discharge related to the drainage area for Outfall 001 has
the potential to be discharged via a storm drain into surface waters, or does this runoff/drainage area all discharge
through means covered under the NPDES wastewater permit?"
Response: All SW001 runoff/drainage areas flow through NPDES wastewater permit NCO024392 Outfall 005. There is no
potential for any runoff or discharge from Outfall SW001 to be discharged into surface waters
"Historical information in the permit file states there are 3 basins around the landfill that receive runoff. Per an email
dated April 26, 2016, Duke Energy proposed stretching NCS000020 to cover these 3 outfalls and monitor these basins
for 2 years to determine if there were any discharges. DEQ agreed as long as monitoring occurred during multiple
larger volume storm events, and that if no discharges were observed, then monitoring of the sedimentation basins
could cease. Can you confirm if there were any discharges seen?"
Response: These 3 sediment collection basins around the landfill were monitored during that 2 year timeframe and
continue to be monitored every 7 days and after every large volume storm event of > 1" of rainfall. We have not had a
storm event that produced a discharge that overflowed any of the 3 basins.
"The renewal application requested that several outfalls be renumbered. The Division has agreed to do this, however,
I have a couple questions. Duke requested that Outfall 019 be renumbered to 020. What should the existing Outfall
020 be renumbered as? In addition, it was requested that Outfall 032 be relabeled as Outfall 015; however, there is no
Outfall 032 mentioned in the permit renewal application. Historical information in the permit file does reference an
outfall SW032. Can you provide further information on this?"
Response: The existing SWO020 is essentially an internal outfall to the existing SW19. It is a pipe that discharges to
ground and drains to and through SW19. With the request to renumber the existing SW19 to SW20, we are eliminating
4

the existing SW20 outfall so there will be no need for that site to be renumbered. SW032 is an internal outfall to
SW015. There should not be a need to list an outfall SW032 in the renewed industrial stormwater permit. The cover
letter from the June 2015 permit renewal package detailed these proposed changes. We have attached that original
package with the cover letter (NCS000020 Renewal Package 062315).
Please let us know if any further clarifications/explanations or additional information is needed to assist you in
developing the draft permit. We would like the opportunity to review a preliminary draft of the permit prior to sending
it to public notice.
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
., DUKE
V " ENERGY,
From: Young, Brianna A <[e-mail]>
Sent: Friday, January 7, 2022 3:01 PM
To: Beaver, Gregory T <[e-mail]>; Safrit, Don <[e-mail]>
Subject: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
Good afternoon,
I am reviewing information in the permit file history related to the McGuire Nuclear Station (NCS000020). The renewal
application submitted states runoff from the oil storage house has the potential to reach a storm drain in the Outfall 001
drainage area. Per notes in our permit history file, stormwater Outfall 001 is covered under an NPDES wastewater
permit as part of wastewater Outfall 005. Can you confirm if any runoff or discharge related to the drainage area for
Outfall 001 has the potential to be discharged via a storm drain into surface waters, or does this runoff/drainage area all
discharge through means covered under the NPDES wastewater permit?
Historical information in the permit file states there are 3 basins around the landfill that receive runoff. Per an email
dated April 26, 2016, Duke Energy proposed stretching NCS000020 to cover these 3 outfalls and monitor these basins for
2 years to determine if there were any discharges. DEQ agreed as long as monitoring occurred during multiple larger
volume storm events, and that if no discharges were observed, then monitoring of the sedimentation basins could
cease. Can you confirm if there were any discharges seen?
The renewal application requested that several outfalls be renumbered. The Division has agreed to do this, however, I
have a couple questions. Duke requested that Outfall 019 be renumbered to 020. What should the existing Outfall 020
be renumbered as? In addition, it was requested that Outfall 032 be relabeled as Outfall 015; however, there is no
Outfall 032 mentioned in the permit renewal application. Historical information in the permit file does reference an
outfall SW032. Can you provide further information on this?
Thank you,

Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred during State of Emergency)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with
the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Permit Number: NCS000020 Permit Status: Expired
Permit Type: Stormwater Discharges Individual
Facility Name: McGuire Nuclear Power Plant
Facility Addressi: NC Hwy 73
Facility Address2:
City, State & Zip: Huntersville, NC 28078
Owner Information Details:
MUST submit a Change of Name/Ownership form to DEMLR to make any changes to this Owner information.
(Click Here for "Change of Name/Ownership" Form)
Owner Name: Duke Energy Carolinas LLC
Owner Type: Non -Government Owner Type Group: Organization
*** Legally Responsible for Permit ***
(Responsible corporate officer/principle executive officer or ranking elected official/general partner or proprietor;
or any other person with delegated signatory authority from the legally responsible person.)
Owner Affiliation: Jessica Bednarcik Title:
Addressi: 526 S Chruch St
Address2: Mail Code Ec13k
City, State & Zip: Charlotte, NC 28201-1002
Work Phone: [phone] Fax:
Email Address: iessica.bed narcik(a)duke-energy.com
*** Permit Annual Fee Billing ***
Billing Month: February
Invoice Number Invoice Date Invoice Due Date Invoice Amount Invoice Status
Owner Contact Person(s)
11/23/2021 Page 1

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Contact Name Title
Bet1385
r
Address
rSalisbury, NG
Phone
711A C7'OT 630 3—
Fax
Email
Ronnie
G66dffk�Fi
175 Steam Plant Rd Mt Hell., NG 28120
812 551 z155
LC7f7—rQR7G
2599 FaiFFax,GFeenslaeFe, NG
336851TJrO'
en
Steve1eFa.telI*e@dul(e
rRaleigl�,,�
l3
919 r�57
919 516 1109
„tee eah. n@ l..l.
e eneFgy.
Gromny
s.eek ING
311 r
C�5 Pine Hall Rd Bele !` 09
79i 7
��
,.I�
7CTTQlTfCRTPPTJG
�..T TfGTrCTTSt,GhaFlette, NG 28202
700773�Sr
Cynthia Winston
410 S Wilmington St, Raleigh, NC 27602
919-546-5538
cynthia.winston@d
uke-energy.com
518 Celle Mill G Matthews, NG 28101
r r
79i79i r��
Elizabeth Glenn
526 S GhruEh , Charlette, NG
2O2nzvrozzvvz
980 373 0530
CRLR17
I(e-eneFgy.CO F�1
Kevin C l..b.n....n
�I µ
526 S Ghra"ci-.St, GhaFlette—, NG
282n�02-
Inn 7�c611
l(sjehnse„n e
neFgy
W i nvv McCabe
526 c rl, r Ell cr r M .I +, 4G
r r
282/1�7L011002-
MayuF Patel
526 C P`huF— . C4 C_ T !10 Q, Chile++.,
nlli
70q 7�8ir
�
io� VP Administrative
Sefvfees
550 C T.-.....-. St P`L.-..lett.. NG 28292
711A 7TVT 82 559T
i I�edney.Gaddy@du
I(e eneFgy.eem
EFOe Rebisc
5550 S Tiy6R St, Charlene, NG 28202
non�ov- 2
Steve D Hodges
573 Duke Power Rd, Mooresboro, NC
28114
828-657-2000
828-657-2060
Pau'DFaeviteh
on Box 1006, Ma 1 Code E G 13 v r
980 373 Oq88
Pau'. DFaeYOtEh@daharletteI(e-eneFgy-.eef
TFayms cariF
on ❑ex 1 nn7 r GhaFlett r NG
707l�07
79191 382 692-0
7N382 8611
tFayi. , nclamF@d l(e
RebeFt F Tayl@F PFejeet ManagefT-
r,,.n,)Fat , Real Estate
SefyIEes
c4 30d nn 13— 1007, rl.... lette niG
2820i
Inn 7j pT 382 6227
Fe`e y'eF@du'"e ene
Fgy.eeRg
Lee A r
Facility Contact Person(s)
ctd 30 nn Bee 1097, r`L.aFiett NG
r
2820 i
nonce 7�=
Inn�19
�Od
neFgy:e6ffl
Contact Name Title
Thomas D Ray Site Vice President
Address
12700 Hagers Ferry Rd, Huntersville, NC
28078
Phone
980-875-4805
Fax
Email
tom.ray@duke-ener
gy.com
Permit Contact Person(s)
Contact Name Title
Angela M Greeffis
Address
12700 Hagers Ferry r r
rH a RteF9vmc, faCz2897o
Phone
Inn 875 5958
OT
T� JQ
Fax
Email
Gregory Beaver Senior EHS Professional
12700 Hagers Ferry Rd,
Huntersville, NC 28078
980-875-2287
Gregory. Beaver( duke
-energy.com
John Ballard Senior EHS Professional
12700 Hagers Ferry Rd,
Huntersville. NC 28078
980-875-5227
John.BallardC�duke-
energy.com
Don Safrit Water SME
410 S Wilmington St, Raleigh NC
27602
919-546-6146
don.safritC&duke-
energy.com
Permit Billing Contact(s)
Contact Name Title
Cynthia Winston
11/23/2021
Address
410 S Wilmington St, Raleigh, NC 27602
Phone
919-546-5538
Fax
Email
cynthia.winston@du
Page 2

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Person(s) with Delegated Signatory Authority MA
Type Contact Name Title Address Phone Fax Email
PeFffl j*Fn Kammer Safety Assuranee 12700 HageFs Ferry Rd, 70i 875 589i
Permit Regis ReykeEd Station Manager 12700 Hagers Ferry Rd, 980-875- Ed.Pigott(@duke-energy.com
igm Huntersville, NC 28078 4111701 875
5894
Permit Brent Bare Operations 12700 Hagers Ferry Rd, 980-875-3669 Brent. Bare@)duke-energy.com
Manager Huntersville, NC 28078
Person(s) with Electronic Signature Authority
Type Contact Name Title Address Phone Fax Email
Outfalls 9r
Outfall #: 004 Outfall Description: Unknown
Outfall Lattitude: 35.435830 Outfall Longitude:-80.943610 Represented by Outfall:
% Stormwater: % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Outfall #: 006 Outfall Description: Unknown
Outfall Lattitude: 35.420830 Outfall Longitude:-80.949170
Stormwater: 100 % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Outfall #: 008 Outfall Description: Unknown
Outfall Lattitude: 35.426110 Outfall Longitude:-80.943060
Stormwater: 100 % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV,B;CA
Represented by Outfall:
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV, B; CA
Represented by Outfall:
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV,B;CA
11/23/2021 Page 3

McGuire Stormwater Outfall Locations
SW Outfall
Location
Latitude
Longitude
001
WWCB
35.42845
-80.95362
002
Landfarm #1
35.43176
-80.95517
003
RC Discharge
35.43582
-80.9429
004
RC Discharge
35.43585
-80.9436
005
RC Discharge
35.43576
-80.94403
015
RC Discharge
35.43567
-80.94435
016
RC Discharge
35.4358
-80.94497
017
RC Discharge
35.4359
-80.946
018
RC Discharge
35.43581
-80.94661
019
RC Discharge
35.43529
-80.94713
020
RC Discharge
35.43525
-80.9472
021
RC Discharge
35.4347
-80.94714
022
RC Discharge
35.43443
-80.94719
008
Garage
35.4262
-80.94339
006
Switchyard
35.42061
-80.94904
007
Switchyard
35.42066
-80.94442
009
Switchyard
35.42151
-80.94328
010
Switchyard
35.42082
-80.94403
011
Switchyard
35.42036
-80.94553
012
Switchyard
35.4206
-80.94465
013
Switchyard
35.42045
-80.9453
014
Switchyard
35.42012
-80.94685
023
Switchyard
35.42146
-80.94339
024
Switchyard
35.42013
-80.94685
025
Switchyard
35.42106
-80.94604
026
Switchyard
35.4209
-80.94661
027
Switchyard
35.42071
-80.94725
028
Switchyard
35.42053
-80.94793
037
Switchyard
35.42126
-80.94895
038
Switchyard
35.42035
-80.94554

W ATk9
QG
� Y
Lee N. Williams
Environmental, Health & Safety Manager
Duke Energy
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, NC 28078
Dear Mr. Williams:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins Director
Division of Water Quality
August 10, 2007 Do Um�' LJ
Subject: Representative Stormwater Outfall Request
Duke Energy — McGuire Nuclear Station
NCS000020
Mecklenburg County
The Division of Water Quality received your request for changes in your monitoring obligations at Duke
Energy - McGuire Nuclear Station on July 26, 2007, and a current site plan with drainage area
descriptions on August 9, 2007. Based on our understanding of your representations of current site
drainage conditions as presented in your letter and site plan, we are granting the following revision to
your monitoring obligations under NCS000020. Please maintain a copy of this letter on file at the
facility.
1. No sampling is required at Outfal1001, which is also permitted under Wastewater Permit
NCO024392 as Outfall 005.
2. You reported that Outfalls 004 and 006 are representative of Outfalls 029 - 032, and 037.
(DWQ approved your representative outfall request that 004 and 006 were representative of
003, 005, 007, and 009 — 028 previously in a letter dated August 28, 1998.) After review of
your letter and site plan, Duke Energy may conduct the required analytical sampling on
Outfalls 004 and 006 as representative for Outfalls 003, 005, 007, 009 — 032, and 037 and may
discontinue analytical monitoring of Outfalls 003, 005, 007, 009 — 032, and 037. Please rote
that Outfalls 003, 005, 007, 009 — 032, and 037 must still be included in the twice -yearly
qualitative monitoring event.
3. At Outfall 008, analytical and qualitative monitoring will be continued.
4. Since there is no stormwater runoff associated with an industrial activity as reported in your
request at Outfalls 002 and 033 — 036, no sampling is required.
If you change the industrial activity in the drainage areas or significantly change the operation of your
business from its current status, you must notify the Division of Water Quality.
Please contact me with any questions or concerns at [phone] ext. 360.
N�°��nCaro ina
A tur'74
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet, www.ncwaterauality ore Location: 512 N SalisburySt. Raleigh, NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/l0% Post Consumer Paper

Lee N. Williams
Duke Energy NCS000020
August 10, 2007
[ UI KAU I'
cc: Mooresville Regional Office
Central Files
Stormwater Permitting Unit Files
Sincerely,
�x *
Robert Patterson, PE
Environmental Engineer

A�h
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
Land Quality Section
Tracy E. Davis, PE, CPM
Director
August 29, 2013
Mr. Steven D. Capps, Site Vice President
Duke Energy Carolinas, LLC
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, North Carolina 28078
Subject:
Dear Mr. Capps:
Pat McCrory, Governor
John E. Skvarla, III, Secretary
D EC"E WE
e•
MCGUIRE NUCLEAR STAT'ON
V.CE P?cSIDENT'S OFFICE
NPDES Stormwater Permit
Stormwater Permit Certificate of Coverage No. NCS000020
Representative Outfall Status Request
McGuire Nuclear Station
Mecklenburg County
The Mooresville Regional Office staff have reviewed your request for a determination that stormwater discharge
outfall (SDO) SWO06 be granted representative outfall status for stormwater outfall SW038. Based on the
information provided we are approving this request. In accordance with 40 CFR § 122.21(g) (7), you are
authorized to sample outfall number SWO06 as a representative outfall. This approval is effective with the next
sampling event. We also want to remind you that the permit still requires Qualitative Monitoring be performed
at all SDOs, regardless of representative status.
Please remember that any actions you initiate in response to benchmark exceedances as directed in the tiered
response provisions of your permit must address all drainage areas represented by SDO SWO06 where
appropriate.
Please append this letter to your Stormwater Pollution Prevention Plan (SPPP) or permit to document that
representative outfall status has been approved. If changes in drainage areas, structures, processes, storage
practices, or other activities occur that significantly alter the basis of this approval. representative outfall status
Mooresville Regional Office
610 East Center Avenue, Suite 301, Mooresville, North Carolina 28115
Telephone: [phone] / FAX: [phone] • Internet: http:/Iwww.dlr.enr.state.nc.us/pages/landqualitysection.htmI
An Equal Opportunity / Affirmative Action Employer - 50% Recycled / 10% Post Consumer Paper

NPDES Stormwater Permit
Duke Energy Carolinas, LLC
McGuire Nuclear Station
August 29, 2013
Page 2 of 2
may no longer be valid. You should either resume sampling at all SDOs, or reapply to this office for
representative outfall status based on updated information. If you have any questions or comments concerning
this letter, please contact our Office at [phone].
Sincerely,
Zahid Saeed Khan,
Regional Supervisor
Mooresville Regional Office
cc: Stormwater Permitting File NCS000020

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Permit Number: NCS000020 Permit Status: Expired
Permit Type: Stormwater Discharges Individual
Facility Name: McGuire Nuclear Power Plant
Facility Addressi: NC Hwy 73
Facility Address2:
City, State & Zip: Huntersville, NC 28078
Owner Information Details:
MUST submit a Change of Name/Ownership form to DEMLR to make any changes to this Owner information.
(Click Here for "Change of Name/Ownership" Form)
Owner Name: Duke Energy Carolinas LLC
Owner Type: Non -Government Owner Type Group: Organization
*** Legally Responsible for Permit ***
(Responsible corporate officer/principle executive officer or ranking elected official/general partner or proprietor;
or any other person with delegated signatory authority from the legally responsible person.)
Owner Affiliation: Jessica Bednarcik Title:
Addressi: 526 S Chruch St
Address2: Mail Code Ec13k
City, State & Zip: Charlotte, NC 28201-1002
Work Phone: [phone] Fax:
Email Address: iessica.bed narcik(a)duke-energy.com
*** Permit Annual Fee Billing ***
Billing Month: February
Invoice Number Invoice Date Invoice Due Date Invoice Amount Invoice Status
Owner Contact Person(s)
11/23/2021 Page 1

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Contact Name Title
Bet1385
r
Address
rSalisbury, NG
Phone
711A C7'OT 630 3—
Fax
Email
Ronnie
G66dffk�Fi
175 Steam Plant Rd Mt Hell., NG 28120
812 551 z155
LC7f7—rQR7G
2599 FaiFFax,GFeenslaeFe, NG
336851TJrO'
en
Steve1eFa.telI*e@dul(e
rRaleigl�,,�
l3
919 r�57
919 516 1109
„tee eah. n@ l..l.
e eneFgy.
Gromny
s.eek ING
311 r
C�5 Pine Hall Rd Bele !` 09
79i 7
��
,.I�
7CTTQlTfCRTPPTJG
�sChu "'cTl-St, CCi , NG 28202
700373'DD-Sr
Cynthia Winston
410 S Wilmington St, Raleigh, NC 27602
919-546-5538
cynthia.winston@d
uke-energy.com
518 Celle Mill G Matthews, NG 28101
r r
79i79i r��
, Charlette, NG
2O2nzvr0i io oz
980 373 0530
CRLR17
I(e-eneFgy.COF�1
Kevin c i,.i..n,.,.n
526 S GhFLiEh .St, GhaFlette—, NG
282n�02-
Inn�c611
l(sjehnse„mac
neFgy
W i nvv McCabe
526 C rl, r Ell cr r M .I +, 4G
r r
282/1�7L011002-
MayuF Patel
526 C P`huF— . C4 C_ T !10 Q, Chile++.,
nlli
70q 7�8ir
�
io� VP Administrative
Sefvfees
550 C T.-.....-. St P`L.-..lett.. NG 28292
711A 7TVT 82 559T
i I�edney.Gaddy@du
I(e eneFgy.eem
EFOe Rebisc
5550 S Tiy6R St, Charlene, NG 28202
non�ov- 2
Steve D Hodges
573 Duke Power Rd, Mooresboro, NC
28114
828-657-2000
828-657-2060
Pau'DFaeviteh
on Box 1006, Ma 1 Code E G 13 v r
980 373 Oq88
Pau'. DFaeYOtEh@daharletteI(e-eneFgy-.eef
TFayms cariF
on ❑ex 1 nn7 r GhaFlett r NG
707l�07
79191 382 692-0
7N382 8611
tFayi. , nclamF@d l(e
RebeFt F Tayl@F PFejeet ManagefT-
r,,.n,)Fat , Real Estate
SefyIEes
c4 30d nn 13— 1007, rl.... lette niG
2820i
Inn 7j pT 382 6227
Fe`e y'eF@du'"e ene
Fgy.eeRg
Lee A r
Facility Contact Person(s)
ctd 30 nn Bee 1097, r`L.aFiett NG
r
2820 i
nonce 7�=
Inn�19
�Od
neFgy:e6ffl
Contact Name Title
Thomas D Ray Site Vice President
Address
12700 Hagers Ferry Rd, Huntersville, NC
28078
Phone
980-875-4805
Fax
Email
tom.ray@duke-ener
gy.com
Permit Contact Person(s)
Contact Name Title
Angela M Greeffis
Address
12700 Hagers Ferry r r
rH a RteF9vmc, faCz2897o
Phone
Inn 875 5958
OT
T� JQ
Fax
Email
Gregory Beaver Senior EHS Professional
12700 Hagers Ferry Rd,
Huntersville, NC 28078
980-875-2287
Gregory. Beaver( duke
-energy.com
John Ballard Senior EHS Professional
12700 Hagers Ferry Rd,
Huntersville. NC 28078
980-875-5227
John.BallardC�duke-
energy.com
Don Safrit Water SME
410 S Wilmington St, Raleigh NC
27602
919-546-6146
don.safritC&duke-
energy.com
Permit Billing Contact(s)
Contact Name Title
Cynthia Winston
11/23/2021
Address
410 S Wilmington St, Raleigh, NC 27602
Phone
919-546-5538
Fax
Email
cynthia.winston@du
Page 2

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Person(s) with Delegated Signatory Authority MA
Type Contact Name Title Address Phone Fax Email
PeFffl j*Fn Kammer Safety Assuranee 12700 HageFs Ferry Rd, 70i 875 589i
Permit Regis ReykeEd Station Manager 12700 Hagers Ferry Rd, 980-875- Ed.Pigott(@duke-energy.com
igm Huntersville, NC 28078 4111701 875
5894
Permit Brent Bare Operations 12700 Hagers Ferry Rd, 980-875-3669 Brent. Bare@)duke-energy.com
Manager Huntersville, NC 28078
Person(s) with Electronic Signature Authority
Type Contact Name Title Address Phone Fax Email
Outfalls 9r
Outfall #: 004 Outfall Description: Unknown
Outfall Lattitude: 35.435830 Outfall Longitude:-80.943610 Represented by Outfall:
% Stormwater: % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Outfall #: 006 Outfall Description: Unknown
Outfall Lattitude: 35.420830 Outfall Longitude:-80.949170
Stormwater: 100 % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Outfall #: 008 Outfall Description: Unknown
Outfall Lattitude: 35.426110 Outfall Longitude:-80.943060
Stormwater: 100 % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV,B;CA
Represented by Outfall:
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV, B; CA
Represented by Outfall:
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV,B;CA
11/23/2021 Page 3

W ATk9
QG
� Y
Lee N. Williams
Environmental, Health & Safety Manager
Duke Energy
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, NC 28078
Dear Mr. Williams:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins Director
Division of Water Quality
August 10, 2007 Do Um�' LJ
Subject: Representative Stormwater Outfall Request
Duke Energy — McGuire Nuclear Station
NCS000020
Mecklenburg County
The Division of Water Quality received your request for changes in your monitoring obligations at Duke
Energy - McGuire Nuclear Station on July 26, 2007, and a current site plan with drainage area
descriptions on August 9, 2007. Based on our understanding of your representations of current site
drainage conditions as presented in your letter and site plan, we are granting the following revision to
your monitoring obligations under NCS000020. Please maintain a copy of this letter on file at the
facility.
1. No sampling is required at Outfal1001, which is also permitted under Wastewater Permit
NCO024392 as Outfall 005.
2. You reported that Outfalls 004 and 006 are representative of Outfalls 029 - 032, and 037.
(DWQ approved your representative outfall request that 004 and 006 were representative of
003, 005, 007, and 009 — 028 previously in a letter dated August 28, 1998.) After review of
your letter and site plan, Duke Energy may conduct the required analytical sampling on
Outfalls 004 and 006 as representative for Outfalls 003, 005, 007, 009 — 032, and 037 and may
discontinue analytical monitoring of Outfalls 003, 005, 007, 009 — 032, and 037. Please rote
that Outfalls 003, 005, 007, 009 — 032, and 037 must still be included in the twice -yearly
qualitative monitoring event.
3. At Outfall 008, analytical and qualitative monitoring will be continued.
4. Since there is no stormwater runoff associated with an industrial activity as reported in your
request at Outfalls 002 and 033 — 036, no sampling is required.
If you change the industrial activity in the drainage areas or significantly change the operation of your
business from its current status, you must notify the Division of Water Quality.
Please contact me with any questions or concerns at [phone] ext. 360.
N�°��nCaro ina
A tur'74
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet, www.ncwaterauality ore Location: 512 N SalisburySt. Raleigh, NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/l0% Post Consumer Paper

Lee N. Williams
Duke Energy NCS000020
August 10, 2007
[ UI KAU I'
cc: Mooresville Regional Office
Central Files
Stormwater Permitting Unit Files
Sincerely,
�x *
Robert Patterson, PE
Environmental Engineer

McGuire Stormwater Outfall Locations
SW Outfall
Location
Latitude
Longitude
001
WWCB
35.42845
-80.95362
002
Landfarm #1
35.43176
-80.95517
003
RC Discharge
35.43582
-80.9429
004
RC Discharge
35.43585
-80.9436
005
RC Discharge
35.43576
-80.94403
015
RC Discharge
35.43567
-80.94435
016
RC Discharge
35.4358
-80.94497
017
RC Discharge
35.4359
-80.946
018
RC Discharge
35.43581
-80.94661
019
RC Discharge
35.43529
-80.94713
020
RC Discharge
35.43525
-80.9472
021
RC Discharge
35.4347
-80.94714
022
RC Discharge
35.43443
-80.94719
008
Garage
35.4262
-80.94339
006
Switchyard
35.42061
-80.94904
007
Switchyard
35.42066
-80.94442
009
Switchyard
35.42151
-80.94328
010
Switchyard
35.42082
-80.94403
011
Switchyard
35.42036
-80.94553
012
Switchyard
35.4206
-80.94465
013
Switchyard
35.42045
-80.9453
014
Switchyard
35.42012
-80.94685
023
Switchyard
35.42146
-80.94339
024
Switchyard
35.42013
-80.94685
025
Switchyard
35.42106
-80.94604
026
Switchyard
35.4209
-80.94661
027
Switchyard
35.42071
-80.94725
028
Switchyard
35.42053
-80.94793
037
Switchyard
35.42126
-80.94895
038
Switchyard
35.42035
-80.94554

A�h
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
Land Quality Section
Tracy E. Davis, PE, CPM
Director
August 29, 2013
Mr. Steven D. Capps, Site Vice President
Duke Energy Carolinas, LLC
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, North Carolina 28078
Subject:
Dear Mr. Capps:
Pat McCrory, Governor
John E. Skvarla, III, Secretary
D EC"E WE
e•
MCGUIRE NUCLEAR STAT'ON
V.CE P?cSIDENT'S OFFICE
NPDES Stormwater Permit
Stormwater Permit Certificate of Coverage No. NCS000020
Representative Outfall Status Request
McGuire Nuclear Station
Mecklenburg County
The Mooresville Regional Office staff have reviewed your request for a determination that stormwater discharge
outfall (SDO) SWO06 be granted representative outfall status for stormwater outfall SW038. Based on the
information provided we are approving this request. In accordance with 40 CFR § 122.21(g) (7), you are
authorized to sample outfall number SWO06 as a representative outfall. This approval is effective with the next
sampling event. We also want to remind you that the permit still requires Qualitative Monitoring be performed
at all SDOs, regardless of representative status.
Please remember that any actions you initiate in response to benchmark exceedances as directed in the tiered
response provisions of your permit must address all drainage areas represented by SDO SWO06 where
appropriate.
Please append this letter to your Stormwater Pollution Prevention Plan (SPPP) or permit to document that
representative outfall status has been approved. If changes in drainage areas, structures, processes, storage
practices, or other activities occur that significantly alter the basis of this approval. representative outfall status
Mooresville Regional Office
610 East Center Avenue, Suite 301, Mooresville, North Carolina 28115
Telephone: [phone] / FAX: [phone] • Internet: http:/Iwww.dlr.enr.state.nc.us/pages/landqualitysection.htmI
An Equal Opportunity / Affirmative Action Employer - 50% Recycled / 10% Post Consumer Paper

NPDES Stormwater Permit
Duke Energy Carolinas, LLC
McGuire Nuclear Station
August 29, 2013
Page 2 of 2
may no longer be valid. You should either resume sampling at all SDOs, or reapply to this office for
representative outfall status based on updated information. If you have any questions or comments concerning
this letter, please contact our Office at [phone].
Sincerely,
Zahid Saeed Khan,
Regional Supervisor
Mooresville Regional Office
cc: Stormwater Permitting File NCS000020

Young, Brianna A
From: Safrit, Don <[e-mail]>
Sent: Tuesday, January 11, 2022 12:47 PM
To: Young, Brianna A
Cc: Beaver, Gregory T
Subject: RE: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
Attachments: NCS000020 Renewal Package 062315.pdf
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Oops! Forgot to include this!
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
DUKE
� ENERGY,
From: Safrit, Don
Sent: Tuesday, January 11, 2022 12:45 PM
To: 'Young, Brianna A' <[e-mail]>
Cc: Beaver, Gregory T <[e-mail]>
Subject: RE: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
Brianna,
Per your request below, the following are responses to your questions:
"Per notes in our permit history file, stormwater Outfall 001 is covered under an NPDES wastewater permit as part of
wastewater Outfall 005. Can you confirm if any runoff or discharge related to the drainage area for Outfall 001 has
the potential to be discharged via a storm drain into surface waters, or does this runoff/drainage area all discharge
through means covered under the NPDES wastewater permit?"
Response: All SWO01 runoff/drainage areas flow through NPDES wastewater permit NCO024392 Outfall 005. There is no
potential for any runoff or discharge from Outfall SWO01 to be discharged into surface waters
"Historical information in the permit file states there are 3 basins around the landfill that receive runoff. Per an email
dated April 26, 2016, Duke Energy proposed stretching NCS000020 to cover these 3 outfalls and monitor these basins
for 2 years to determine if there were any discharges. DEQ agreed as long as monitoring occurred during multiple
larger volume storm events, and that if no discharges were observed, then monitoring of the sedimentation basins
could cease. Can you confirm if there were any discharges seen?"

Response: These 3 sediment collection basins around the landfill were monitored during that 2 year timeframe and
continue to be monitored every 7 days and after every large volume storm event of > 1" of rainfall. We have not had a
storm event that produced a discharge that overflowed any of the 3 basins.
"The renewal application requested that several outfalls be renumbered. The Division has agreed to do this, however,
I have a couple questions. Duke requested that Outfall 019 be renumbered to 020. What should the existing Outfall
020 be renumbered as? In addition, it was requested that Outfall 032 be relabeled as Outfall 015; however, there is no
Outfall 032 mentioned in the permit renewal application. Historical information in the permit file does reference an
outfall SW032. Can you provide further information on this?"
Response: The existing SWO020 is essentially an internal outfall to the existing SW19. It is a pipe that discharges to
ground and drains to and through SW19. With the request to renumber the existing SW19 to SW20, we are eliminating
the existing SW20 outfall so there will be no need for that site to be renumbered. SW032 is an internal outfall to
SW015. There should not be a need to list an outfall SW032 in the renewed industrial stormwater permit. The cover
letter from the June 2015 permit renewal package detailed these proposed changes. We have attached that original
package with the cover letter (NCS000020 Renewal Package 062315).
Please let us know if any further clarifications/explanations or additional information is needed to assist you in
developing the draft permit. We would like the opportunity to review a preliminary draft of the permit prior to sending
it to public notice.
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
: DUKE
* ENERGY.:
From: Young, Brianna A <[e-mail]>
Sent: Friday, January 7, 2022 3:01 PM
To: Beaver, Gregory T <[e-mail]>; Safrit, Don <[e-mail]>
Subject: [EXTERNAL] Questions regarding McGuire Nuclear Station (NCS000020)
Good afternoon,
I am reviewing information in the permit file history related to the McGuire Nuclear Station (NCS000020). The renewal
application submitted states runoff from the oil storage house has the potential to reach a storm drain in the Outfall 001
drainage area. Per notes in our permit history file, stormwater Outfall 001 is covered under an NPDES wastewater
permit as part of wastewater Outfall 005. Can you confirm if any runoff or discharge related to the drainage area for
Outfall 001 has the potential to be discharged via a storm drain into surface waters, or does this runoff/drainage area all
discharge through means covered under the NPDES wastewater permit?
Historical information in the permit file states there are 3 basins around the landfill that receive runoff. Per an email
dated April 26, 2016, Duke Energy proposed stretching NCS000020 to cover these 3 outfalls and monitor these basins for

2 years to determine if there were any discharges. DEQ agreed as long as monitoring occurred during multiple larger
volume storm events, and that if no discharges were observed, then monitoring of the sedimentation basins could
cease. Can you confirm if there were any discharges seen?
The renewal application requested that several outfalls be renumbered. The Division has agreed to do this, however, I
have a couple questions. Duke requested that Outfall 019 be renumbered to 020. What should the existing Outfall 020
be renumbered as? In addition, it was requested that Outfall 032 be relabeled as Outfall 015; however, there is no
Outfall 032 mentioned in the permit renewal application. Historical information in the permit file does reference an
outfall SW032. Can you provide further information on this?
Thank you,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred during State of Emergency)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with
the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.

� DUKE
�C ENERGY.
June 23, 2015
Mr. Mike Randall
North Carolina Department of
Environment and Natural Resources
Division of Water Resources
Stormwater and General Permits Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Duke Energy
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, NC 28078
Subject: Duke Energy/McGuire Nuclear Station
Renewal Application for NPDES Stormwater Permit #: NCS000020
Certified Mail: 7010 2780 0000 7412 4274
Dear Mr. Randall:
Duke Energy, McGuire Nuclear Station submits the following NPDES stormwater
permit renewal application for NPDES Stormwater Permit Number NCS000020, which
expires December 31, 2015. The attached permit application consists of two (2) copies of
the following documentation as required by the NC Division of Water Resources:
1. Stormwater Permit Renewal Application Form & Certification
2. Stormwater Pollution Prevention Plan Development and Implementation
Certification.
3. Supplemental Information Required for Renewal of Individual NPDES
Stormwater Permit.
• Site Map from the Stormwater Pollution Prevention Plan.
• A summary of Analytical Monitoring results during the term of the
existing permit.
• A summary of the Visual Monitoring results.
• A summary of the Best Management Practices used at our facility.
• A short narrative describing any significant changes in industrial activities
at our facility.
In addition to ther required information, we have provided supplemental information that
contains a description of our overall facility, types of stormwater discharges, stormwater
drainage areas and stormwater outfall locations.
We would like to request the following changes to the permit:

Remove outfall 29, 30, 31, 32. These are internal outfalls as follows:
Outfall 29 internal to 16
Outfall 30 internal to 17
Outfall 31 internal to 18
Outfall 32 internal to 15
Removal of Outfalls 33 — 36. These outfalls do not discharge stormwater from an
industrial process. These were removed by letter from NCDENR dated August 10, 2007.
See Attachment # 2 to the Supplemental Information.
Re -number Outfalls along the discharge canal so they will be somewhat sequential and
remove error traps / confusion for inspections.
Outfall 003 re -numbered to 005
Outfall 005 re -numbered to 003
Outfall 032 re -numbered to 015
Outfall 015 re -numbered to 016
Outfall 016 re -numbered to 017
Outfall 017 re -numbered to 018
Outfall 018 re -numbered to 019
Outfall 019 re -numbered to 020
The supplied stormwater drawing reflects the changes requested to the outfalls listed
above. None of the changes in outfall numbers were to outfalls that required analytical
monitoring.
Should you have any questions concerning the NPDES Stormwater Permit Renewal
application, you may contact John C. Williamson by email at John.Williamson@duke-
energy.com or phone [phone].
I certify, under penalty of law, that this document and all attachments were prepared under my direct
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based upon my inquiry of the person or persons who manage the
system, or those persons directly responsible for gathering the information, the information submitted is, to
the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant
penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations.
Sincereljo
Steve D. Capps
Duke Energy
McGuire Nuclear Station
McGuire Site Vice President

Renewal Application Form
NCDENR National Pollutant Discharge Elimination System NPDEPermit Number
N
Stormwater Individual Permit NCS000020
Please provide your permit number in box in the upper right hand corner, complete the information in the space provided
below and return the completed renewal form along with the required supplemental information to the address indicated.
Owner Information * Address to which permit correspondence will be mailed
Owner / Organization Name: Duke Energy Carolinas, LLC
Owner Contact: Mr. Steven D. Capps, Site Vice President
Mailing Address: 12700 Hagers Ferry Road
Huntersville, NC 28078
Phone Number: 980.875.4805
Fax Number:
E-mail address: [e-mail]
Facilitv Information
Facility Name:
McGuire Nuclear Station
Facility Physical Address:
12700 Hagers Ferry Road
Huntersville, NC 28078
Facility Contact:
Mr. John C. Williamson
Malling Address:
12700 Hagers Ferry Road
Huntersville, NC 28078
Phone Number:
980.875.5894
Fax Number:
980.875.4627
E-mail address:
[e-mail]
Permit Information
Permit Contact:
Mr. John C. Williamson
Mailing Address:
12700 Hagers Ferry Road
Huntersville, NC 28078
Phone Number:
980.875.5894
Fax Number:
980.875.4627
E-mail address:
[e-mail]
Discharge Information
Receiving Stream: Catawba River & Lake Norman
Stream Class: Class WS-IV & Class WS-IV B
Basin: Catawba River Basin
Sub -Basin: 030832
Number of Outfalls:
Facility/ActivityFacility/Activity Changes Please describe below any changes to your facility or activities since issuance of your permit. Attached a
separate sheet if necessary.
There have been no significant changes in the industrial activity since the renewal of Stormwater Permit NCS000020 issued on
December 15, 2010. There have been no significant changes in work processes, material handling processes, storage practices,
or raw materials used by the facility since the renewal of Stormwater Permit NCS000020 issued on December 15, 2010.
CERTIFICATION
I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief
such information is tr pbete and accurate. / /
Signature Date 0 6 i zg ` /_15�
Sp Cft PP "u s Rc Sag pia R Epy6y r
Print or type name of person signing above
Title
SW Individual Permit Coverage Renewal
Please return this completed application form Stormwater Permitting Program
and requested supplemental information to: 1612 Mail Service Center
Raleigh, North Carolina 27699-1612

SUPPLEMENTAL INFORMATION REQUIRED FOR RENEWAL OF INDIVIDUAL
NPDES STORMWATER PERMIT
Two copies of each of the following shall accompany this submittal in order for the application
to be considered complete:
(Do not submit the site Stormwater Pollution Prevention Plan)
Initials
1. A current Site Map from the Stormwater Pollution Prevention Plan. The location of
industrial activities (including storage of materials, disposal areas, process areas and
loading and unloading areas), drainage structures, drainage areas for each outfall,
building locations and impervious surfaces should be clearly noted.
112. A summary of Analytical Monitoring results during the term of the existing permit
(if your permit required analytical sampling). Do not submit individual lab reports.
The summary can consist of a table including such items as outfall number,
/ parameters sampled, lab results, date sampled, and storm event data.
✓ 3. A summary of the Visual Monitoring results. Do not submit individual monitoring
reports. The summary can consist of a table including such items as outfall number,
parameters surveyed, observations, and date monitoring conducted.
t✓ 4. A summary of the Best Management Practices utilized at the permitted facility.
Summary should consist of a short narrative description of each BMP's in place at
the facility. If the implementation of any BMP's is planned, please include
information on these BMP's.
✓ 5. A short narrative describing any significant changes in industrial activities at the
permitted facility. Significant changes could include the addition or deletion of
work processes, changes in material handling practices, changes in material storage
practices, and/or changes in the raw materials used by the facility.
✓ 6. Certification of the development and implementation of a Stormwater Pollution
Prevention Plan for the permitted facility (Sign and return attached form).
If the final year analytical monitoring of the existing permit term has not been completed
prior to filing the renewal submittal, then the last years monitoring results should be submitted
within 30 days of receipt of the laboratory reports. (i.e. do not withhold renewal submittal
waiting on lab results)

STORMWATER POLLUTION PREVENTION PLAN
DEVELOPMENT AND IMPLEMENTATION
CERTIFICATION
North Carolina Division of Energy, Mineral, and Land Resources - Stormwater Permitting
Facility Name: McGuire Nuclear Station
Permit Number: NCS000020
Location Address: 12700 Hagers Ferry Road
Huntersville, NC 28078
County: Mecklenburg
"I certify, under penalty of law, that the Stormwater Pollution Prevention Plan (SPPP) document and all attachments were
developed and implemented under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information required by the SPPP. Based on my inquiry of the
person or persons who manage the system, or those persons directly responsible for gathering the information, the
information gathered is, to the best of my knowledge and belief, true, accurate and complete."
And
"I certify that the SPPP has been developed, signed and retained at the named facility location, and the SPPP has been
fully implemented at this facility location in accordance with the terms and conditions of the stormwater discharge
permit."
And
"I am aware that there are significant penalties for falsifying information, including the possibility of fines and
imprisonment for knowing violations."
Sign (according to permit signatory requirements) and return this Certification. DO NOT
SEND STORMWATER POLLUTION PREVENTION PLAN WITH THIS CERTIFICATION.
Signature
D CAPPS
Print or type name of person signing above
Date D6 129/l.5
MCGLA.IRC 51 rC YICE PREs/ter
Title
SPPP Certification 10/13

McGUIRE NUCLEAR STATION
STORMWATER DRAINAGE INFORMATION
STORMWATER PERMIT No. NCS000020
The following is a description of storm water drainage areas, storage practices, loading and
unloading activities, containment features and best management practices for preventing
pollution of the soil and water.
The description of each outfall includes the approximate area drained, percentage of impervious
area, receiving water and the latitude and longitude of each discharge.
SITE DESCRIPTION
The McGuire Nuclear Site is a 2 unit, electric generation plant. The McGuire site covers a total
of 580 acres and includes a 30 acre plant yard. It is bound to the West by the Catawba River and
to the North by Lake Norman. The site area varies in elevation from 650 to 800 feet. The power
house yard is at elevation 760. The Administration Building and parking areas are at elevation
747 and the 230-525 kV switch yard, south of Highway N.C. 73, is at elevation 738. Lake
Norman, with a full pond at elevation 760, is retained to the Northeast by an abutment dike
which has a crest elevation at the site of 780 feet. The site topography is generally flat with
some rolling hills in the outlying undeveloped areas.
The general soil profile at the site is typical of residual soils produced from weathering of
crystalline rock. The profile shows clay like surface soils grading into stiff to very stiff sandy
micaceous silt. The travel of groundwater between the site and river was estimated at
approximately 6 to 8 years, based on a permeability of 300 feet per year and a porosity of 0.10.
Following is a description of drainage areas, storage practices, loading activities, containment
features and best management practices for preventing pollution of the soil and water. The
description of each outfall includes the approximate area drained, percentage of impervious area,
receiving water and the "accurate" latitude and longitude of each discharge.
The site is broken down into 5 distinct drainage areas. Area # 1 consists of the Discharge Canal
Drainage Area and is comprised of Stormwater Outfalls 3, 4, 5, 15, 16, 17, 18, 19, 20, 21, and 22.
Area # 2 consists of the Plant Area and is comprised of Stormwater Outfall 001.
Area # 3 consists of the Low Level Intake Area and is comprised of Stormwater Outfall 002.
Area # 4 consists of the McGuire Garage and is comprised of Stormwater Outfall 008.
Area # 5 consists of the McGuire Switchyard and is comprised of Stormwater Outfalls 6, 7, 9,
10, 11, 12, 13, 14, 23, 24, 25, 26 27, 28, 37, and 38.
Page 1 of 17

The drainage areas are shown on the attached Stormwater Drawing. See Attachment # 1.
Note: Accuracy of latitude and longitude required by EPA (stormwater discharge application) was
to the nearest 15 seconds.
DRAINAGE AREA # 1— DISCHARAGE CANAL
OUTFALLS 3, 4, 5,15,16,17,18,19, 20, 21, & 22.
Coordinate Location:
3: X: 1420631.9 Y: 619058.68
4: X 420795.30, "Y"619049.60
5: X: 1420981.3 Y: 619067.76
15: X: 1419987.7 Y: 618849.8
16: "X: 1419987.7 Y: 618849.8
17: X: 1420122.56 Y: 619183.25
18: X: 1420029.11 Y: 619085.5
19: X: 141996034.3 Y: 618987.73
20: X: 1419946.21 Y: 618871.85
21: X1419960.29, "Y"618770.08
22: X1419981.95, "Y"618661.34
Discharge Structure:
Plastic and Metal Corrugated Pipe
Source:
Metal and Cable Storage Area
Location:
Northeast of plant, South side of Discharge
Canal
Total Surface Area
Approximately 8 acres
Drained:
Receiving Water:
Lake Norman
General Area Description
Outfalls 3, 4, & 5 and other substantially identical outfalls (15, 16, 17, 18, 19, 20, 21, & 22) (see
note below) provide drainage from a graveled lay down storage yard. Impervious areas include the
loading docks, roof of the Discarded Materials Storage building, paint warehouse and the facilities
maintenance shop. Approximately 2.5% (0.2 acres) of the surface area is impervious.
Note: Outfalls (15, 16, 17, 18, 19, 20, 21 & 22) were added after the original submittal of the
permit application identifying all of the site's storm water discharges. Because the State deemed
that Outfalls 3 & 5 were substantially identical to 4, a letter was sent to the State to ask for the
same status for the additional drains. Substantial Identical Outfall Status was granted in a letter
from NCDENR in Mooresville dated 8/10/2007. See Attachment 2.
Page 2 of 17

Potential Pollutants
Iron, copper and oil and grease are possible pollutants from the stored materials in the area. Total
suspended solids may be released from the gravel and soil in the area.
Warehouse # 3 Storage Yard
This area serves as a lay down storage yard for metal, pipe, empty drums and other misc.
materials. In addition storage is provided in this yard for 2 spare transformers for the plant.
Both transformers have spill containments. These transformers are monitored under the site
SPCC plan on a monthly basis.
The entire storage area is graded to a gradual slope toward the discharge canal. The discharge
canal side is surrounded by a grassed berm which prevents uncontrolled surface area run off into
the canal. The yard area is predominately gravel with rock rip rap areas near the discharge points
that are routed into storm drains.
The area is inspected monthly by Environmental Services personnel.
Discarded Materials Storage Building (DMSB)
This building has approximately 4150 square feet of floor area under roof. Hazardous waste
such as paint wastes, solvents, lab packs, and used oils are stored and shipped off -site from this
building. Spills inside the building enter the building's spill collection system which consist of 2
dry sump trenches.
Note: The collection system has no discharge point outside of the building. Any spillage would
be pumped out and collected for disposal.
There are no storm drains around the exterior of the building as well. Oils and other materials
are removed from the building by pumping into a tanker truck from drums inside the building.
In order to prevent spills during pumping, the hoses are run into the building itself so any spills
would be contained inside. Environmental Services personnel inspect this area on a weekly
basis.
Paint Warehouse
This building has approximately 5600 square feet of floor area under roof used for storing paint.
There are no drains in this building and no storm drains around the outside of the building. This
area is inspected monthly by warehouse personnel.
Storage Yard Dock
The Storage Yard has a concrete ramp for loading materials to be taken off site for disposal. The
loading dock is sloped to contain any spills but is not currently being used. The dock is currently
not in use.
Page 3 of 17

Flex Building # 3
This building is approximately 150 feet X 100 feet. It is a concrete building used to store
emergency response equipment in the case of a natural disaster. There are 3 of these buildings
that have been built to house this type of equipment. The equipment consists of pumps,
generators, compressors, etc. that are on trailers. These buildings were constructed to meet the
NRC (Nuclear Regulatory Commission) Fukishima Response Order. The area around the
building is paved. Stormwater run-off is to a gravel yard area used to store miscellaneous
materials as described above.
DRAINAGE AREA # 2 — PLANT AREA
OUTFALL #1— WASTE WATER COLLECTION BASIN (WWCB)
Coordinate Location:
X - 1417540.20, Y - 616361.74
Discharge Structure:
Concrete Apron
Source:
Waste Water Collection Basin
Location:
Southwest of plant
Total Surface Area Drained:
215 Acres
ReceivingWater:
Catawba River
Note: Outfall 1 is also permitted under NPDES Wastewater Permit NCO024392 as Outfall 005
(Waste Water Collection Basin).
General Area Description
Outfall 001 receives drainage from the East side of the plant as well as from the McGuire Office
Complex (MOC) (Building # 7422), Office Shop Facility (Building # 7455), North
Administration Building (NAB) (Building # 7427), Vendor/Contractor Team Trailers, Dry
Canister Assembly Pad) and discharges into the Standby Nuclear Service Water Pond (SNSWP)
through corrugated metal pipe (CMP) structures.
These structures drain a surface area of 43 acres, which includes 33 acres of impervious
surface. The collected storm water runoff will in turn overflow to the Waste Water
Collection Basin (WWCB) through an underflow spillway.
Drainage from the west and south sides of the plant discharge directly into the Waste Water
Collection Basin (WWCB) through various discharge structures. The structures drain a
Total surface area of 22 acres which includes 16 acres of impervious surface.
The surface areas of the WWCB and SNSWP are (14 acres) and (35 acres) respectively.
The combined surface area of these two impoundments totals 49 acres.
Additionally, the WWCB also receives storm water runoff from approximately 500 feet of NC
Highway # 73 through a CMP on the south bank..
Page 4of17

Total surface area drained by Outfall # 001 is 215 acres as shown on the drawing located in
Appendix A. Of the 215 acres, approximately 40 % (86 acres) is impervious. Impervious
areas do not include the surface area of impoundments or graveled areas.
Potential Pollutants
Outfall 001 is also permitted as Outfall 005 by the sites NPDES Permit, NC0023492. Therefore,
refer to that permit and associated application for a listing of potential pollutants.
Warehouse 1A Loading Dock
Delivery trucks back into the Warehouse's loading/receiving dock to load and unload
various materials, including chemicals. Warehouse personnel are trained to not accept any
container that is leaking or has breached integrity. Warehouse personnel are trained forklift
operators and use safe unloading and material handling techniques. Warehouse personnel
also receive Spill Prevention Control and Countermeasure training where the SWIM
concept is taught (Secure the spill, Warn personnel in the area, Inform appropriate response
personnel, Monitor the area until responsible personnel arrive). Securing the spill involves
damming the area to prevent intrusion into storm drains or any other unplanned discharge
pathway.
Chemical Mix Building
There is an Acid Portable Tank used in this area. This storage area is on a concrete pad that is
surrounded by a concrete curb. The tank sits on a spill containment. This area drains to the
chemical mixing ponds where it may be neutralized if necessary.
Oil Storage House
Warehouse I is used to store oil, grease, hydrazine, and other chemicals. There is also a
compressed gas storage shed attached to it. Drains in the building floor are kept plugged at all
times. Materials spilled inside the building could potentially reach the outside of the building
and a storm drain if sufficient quantities were released (very unlikely). Materials being loaded
or unloaded in front of the warehouse have the potential to reach storm drains. In that event, the
WWCB would provide secondary containment. Routine inspections are conducted to ensure
there are no spilled materials during regular operation and deliveries. A housekeeping inspection
is conducted monthly.
Service Building Loading Dock
This is a minimal use area for loading and unloading equipment and materials to the machine
shop. The dock is sloped towards the Service Building with a drain down slope. The drain is
connected to our Waste Water System and drains to the Initial Hold-up Pond.
Page 5 of 17

U1 Diesel Fuel Unloading Area
U 1 Diesel fuel is received in this area by tanker truck. A curbed concrete pad surrounds the
unloading area. The area is drained through use of drain valves. These valves are normally kept
closed to assure the pad is drained in a controlled manner.
Additionally, a used oil tank is located in this area. It has a 3 foot high concrete spill
containment with drain valves to drain rain water off. The spill containment area is drained
of storm water by procedure.
Safe Shutdown Facility (SSF) D/G Diesel Fuel Unloading Pad
Diesel fuel is received in this area for the SSF Diesel. The area is a curbed concrete pad.
Should a fuel spill occur it would be contained in the curbed concrete pad area that drains to
the yard storm drainage system. Runoff is controlled with a valve, which is normally kept
closed.
Low Level Waste Storage Facility
This area consists of a concrete pad designed to contain sealed containers of Low Level
Radioactive Waste that is pending disposal. This area is monitored by Radiation Protection
personnel for radiological conditions. The storm water runoff from this area drains to the
WWCB.
Dry Cask Storage Area
This area is an open concrete pad holding large concrete canisters of spent nuclear fuel.
Drainage from this area goes to the WWCB. This area is monitored by Radiation Protection
personnel for radiological conditions.
U1 Transformer Yard
Two main step-up transformers, three plant load transformers (and associated equipment) and
one spare transformer are located in this yard. The yard is graveled and several storm drains are
located in this area. When maintenance is performed on the transformers the storm drains are
covered. Should a spill occur, the transformer oil would be contained by the WWCB. There are
oil spill booms located on the WWCB at the point where storm water is discharged to the river.
Transformer inspections are performed monthly by Environmental, Health & Safety and are
documented in the SPCC Plan. Security routinely patrols these areas and has been instructed to
immediately report all spills to the proper site personnel. Signs on the transformers inform
personnel of an oil spill source and who to call if they encounter a spill
U2 Transformer Yard
Two main step-up transformers and 3 plant load transformers (and associated equipment) are
located in this yard. The yard is graveled and several storm drains are located in this area. When
Page 6of17

maintenance is performed on the transformers the storm drains are covered. Should a spill occur,
the transformer oil would be contained by the WWCB. There are oil spill booms located on the
WWCB at the point where storm water is discharged to the river. Transformer inspections are
done monthly by Environmental Services are documented in the SPCC Plan. Operations
inspects this area twice daily on operator rounds. Security routinely patrols these areas and has
been instructed to immediately report all spills to the proper site personnel. Access to this area
is restricted. Personnel working in the area are required to notify the Work Control Center prior
to entering the area.
Dry Canister Assembly and Storage Pad
This area is used as an assembly and storage area for making the large canisters that hold Spent
Fuel on the Spent Fuel Storage Pad. Completed concrete storage canisters and metal parts for
the assembly of new canisters are stored in this area. When the canisters are assembled, redi-mix
concrete is poured into forms to make the canisters.
The area consists of a gravel yard with no storm drains. Storm water runoff is received by storm
drains on the perimeter of the pad which eventually empties into the SNSWP.
Loadim/[Tnloading Area, McGuire Office Complex (Building #7422) Warehouse Dock
The warehouse dock is equipped with a concrete pad to contain spills that may occur. At the rear
of the pad is a storm drain which discharges directly to the SNSWP. The majority of the spills
that may occur in this area can be controlled before reaching the drain. Personnel have been
trained for spill prevention, control and cleanup of all oils, chemicals, and significant materials
per the SPCC plan. The MOC shipping and receiving area processes the majority of site
shipments through this area.
Warehouse/MOC Shop Material Storage Area
This area is used for storage of metal used in the fab shop and for materials being painted in
the site's Paint Booth. There are no storm drains in the immediate area, however storm water
runoff reaches storm drains on either side of the MOC and would eventually discharge to the
SNSWP. The location of the storm drains would allow sufficient time to stop a spill before it
reached a storm drain in most cases. The areas which surround this storage yard are well
grassed. The area along the fence line is rip rapped.
Personnel who store materials in this area are encouraged to minimize the amount of materials
stored. This area is inspected on a monthly basis.
MOC Alternate Data Center
This building is attached to the MOC Building and houses 2 large Diesel Generators that supply
emergency backup power to the company's Alternate Data Center located inside of the MOC
Building. There is a 10,000 gallon above ground storage tank outside of the building. The tank is
a double wall tank that meets SPCC requirements. The area around the storage tank has a rolled
Page 7of17

curb. Drainage from this area goes to the SNSWP. When fuel is being placed in the tank, the
storm drain located near the tank is covered. This is ensured by a fuel receiving procedure. The
building also houses a large battery room which is diked.
Facilities Landscape and Trailer Storage Area Near MOC
This is a graveled area where facilities stores used furniture in trailers, old equipment and
landscaping materials (mulch, gravel sand, dirt, etc.) This area is located Southeast of the MOC
Building parking lot. There are no storm drains in this area. The area is surrounded by an
earthen berm to control storm water. This area is inspected monthly by Facilities Personnel.
FLEX Building # 2
This building is approximately 150 feet X 100 feet. It is a concrete building used to store
emergency response equipment in the case of a natural disaster. There are 3 of these buildings
that have been built to house this type of equipment. The equipment consists of pumps,
generators, compressors, etc. that are on trailers. These buildings were constructed to meet the
NRC (Nuclear Regulatory Commission) Fukishima Response Order. The area around the
building is paved. Stormwater run-off is a paved parking lot and the SNSWP.
DRAINAGE AREA # 3 — LOW LEVEL INTAKE AREA
OUTFALL 002
Coordinate Location:
"X" 1417490.30, "Y" 618073.44
Discharge Structure:
24" CMP
Source:
Land Farm (West of Plant) and Area of the Low
Level Intake Pumps LLIP
Location:
West of the Plant
Total Surface Area
Drained:
Approximately 7.5 acres
Receiving Water:
Catawba River
General Area Description
Storm Water drainage in this area occurs from the concrete structure and cyclone separator for
the Lower level intake pipe (LLIP) and access roads serving the Northwest area of the plant.
Total surface area is 1 acre, which includes 0.3 acres of impervious surface. Drainage also
occurs from an inactive land farm which totals a surface area of 6.5 acres. Total surface area
drained by Outfall #002 is 7.5 acres, including 0.5 acres of impervious surfaces. The total land
area served by by Outfall #002 is approximately 7% impervious.
A letter was sent to NC Division of Water Quality on October 20, 1994 claiming this outfall
would not be sampled due to no industrial activity in this area. This claim is based on the
exemption found in 40 CFR 122.26 (a)(14). The only discharge within this area is from dam
Page 8of17

leakage (raw lake water) and sheet flow. No sampling required for this area is documented in a
letter dated 8/10/2007 from NCDENR in Mooresville. See Attachment # 2.
Potential Pollutants
Total suspended solids can come from the cyclone separator and runoff from the soils in the area.
Total residual chlorine can only be present when fire protection water is used for emergency seal
water. Low pH is indicative of groundwater in the area.
Old Landfarm (Retired)
The McGuire land farm storm water runoff is controlled by the design and operation of the
landfarm. There is a grassed berm around the perimeter of the landfarm to prevent
uncontrolled runoff down the side to the Catawba River. All the drainage is routed from
the top of the landfarm to pipes which run down to a ravine over ground to the river. The
ravine is rip rapped to minimize erosion. A series of groundwater monitoring wells are
located around the site. Groundwater is routinely monitored to assure compliance with
applicable state requirements.
Cyclone Separator / Low Level Intake Area
Cyclone separators remove silt from raw lake water prior to being used for the Low Level Pump
seal water. They continuously drain seal water into a 24" pipe which runs under the land farm.
A fire protection line which contains 1 - 3 ppm chlorine can be used as a back-up to the seal
water line in emergency situations. This would also drain through Outfall # 002.
Groundwater continuously flows into the drainage network in the area of the Low Level Intake
Pump structure. The groundwater drainage ties directly into the 24" pipe referenced above.
Low Level Intake Pump Piping Valve Pit
There are 2 valve pits near the low level intake pumps. These pits tend to collect rain water
during storm events, so a drain line was added to them. The pits only collect rain water. The
drain lines gravity feed to a storm drain that already exists in front of the low level intake pump
area. The storm drain discharges to Outfall 002.
Page 9of17

DRAINAGE AREA # 4 — GARAGE
OUTFALL 008 — MNS GARAGE
Coordinate Location:
"X"1420216.08, "Y"615806.67
Discharge Structure:
15" RCP
Source:
McGuire Garage
Location:
Southeast of Plant
Total Surface Area
Drained:
3.5 Acres
Receiving Water:
I Unnamed tributary to Catawba River
Area Description
The garage provides vehicle and equipment maintenance activities for the McGuire Site, the
Northern Region, and several companies external to Duke Energy. The building has
approximately 7500 square feet under roof. The fenced parking area consists of approximately 3
acres. Half of this area is paved and the remainder is graveled. Approximately 68% (2.4 acres)
is impervious. The North parking area is sloped towards the building. A concrete trench carries
storm water flow to a rip -rapped ditch that disperses into a wooded area. The South parking
area is sloped towards the same rip -rapped ditch.
Potential Pollutants
Diesel fuel, gasoline, oils, grease and ethylene glycol are possible pollutants because of their use
in the area. Total suspended solids may be present due to the soil and gravel in the area.
McGuire Garage
The garage contains numerous materials such as oils, hydraulic fluids, batteries, fuels and
degreasers. Most of the inventory is contained within the garage. Some equipment is stored in
the yard and there are several underground storage tanks and gasoline pumps on the East side of
the garage. All vehicle maintenance is performed indoors. Vehicle washing is done under roof
in the wash bay with all wastewater discharging into the McGuire Conventional Wastewater
Treatment System (WC).
Drains inside the building go to an oil/water separator, which then discharges to the McGuire
WC System. The oil from the trap is routed to chamber 4 (100 gallon oil storage compartment in
the oil/water separator). A leak detection alarm from this system goes to an off -site Security
Company and monitored 24 hours / day. In the event of a spill during fuel loading/unloading,
diesel fuel, gasoline, or oil would flow into the concrete trench, which discharges to Outfall 8. A
drain valve is located at the west end of the trench prior to it discharging to Outfall 008. When
fuel deliveries are made, the valve is closed to contain any spilled fuels that might occur during
loading or unloading activities. There is approximately 1500 square feet of above ground
concrete trench for spill containment. Spill clean-up materials are kept on hand at all times.
Page 10 of 17

Garage personnel perform routine reviews of the computerized leak detection system reports to
verify underground storage tank system integrity.
A steep dirt embankment to the north of the Garage parking area was graded and seeded to
control erosion and sedimentation of the area.
DRAINAGE AREA # 5 — SWITCHYARD
OUTFALLS
Coordinate Location:
6: X 141392.33
Y 613704.50
14: X 1420322.54
Y 613516.89
24: X 1420200.11
Y 613691.88
25: X 1420179.90
Y 613779.22
26: X 1420019.33
Y 613722.3
27: X 1419829.60
Y 613652.93
28: X 1419632.47
Y 613625.11
37: X 1419532.37
1 Y 614086.38
Discharge Structure:
Concrete Spillway
and Corrugated metal pipe
Source:
230KV Switching
Station
Location:
South of Plant
Total Surface Area
9.4 Acres
Drained:
Receiving Water:
I Unnamed Tributaries to the Catawba River
General Area Description
Drainage from 230 kV switchyard and access roads with a total area of 9.4 acres which includes
2.4 acres of impervious surfaces. The switchyard also contains an operating building which
contains batteries and electrical equipment. Two large underground Oil Water Separator Tanks
(one 20,000 gallon tank and one 30,000 gallon tank) have been installed at the switchyard to
contain any oil that might result from a transformer oil spill in the switchyard. Stormwater
Outfalls #14 and #24 have been re-routed to drain to these oil water separators. A drawing
showing the configuration of the oil water separators is provided in Attachment # 3.
Potential Pollutants
Oil, grease and TSS are possible pollutants from the transformers in the area. Total Suspended
Solids come from the gravel and soil in the area. All of the transformers in the switchyard have
been retrofitted to remove PCBs.
230 KV McGuire Switchyard
Interior floor drains and condensate from the equipment closed cooling system drain into the
operating building sump that is pumped out through Outfall 6. Batteries containing acid are kept
Page 11 of 17

in the operating building inside a room without a floor drain. The switchyard contains 69 oil
filled transformers. None contain PCBs.
OUTFALLS 7,9,10,11,12,13,23 & 38.
Coordinate Location:
7: "X"1420363.15, "Y"613543.07
9: "X"142089.06, "Y"613917.90
10: "X"1420806.48, "Y"613696.25
11: "X"1420669.66, "Y"613621.64
12: "X"1420611.50, "Y"613642.65
13: "X"1420420.97, "Y"613595.64
23: "X"1421025.27, "Y"613907.24
38: "X" 1420322.54, "Y" 613516.89
Discharge Structure:
Concrete Spillways and Corrugated Metal
Pipe
Source:
525kV Switching Station
Location:
South of Plant
Total Surface Area Drained:
27 Acres
Receiving Water:
I Unnamed Tributaries to the Catawba River
Area Description
Drainage from 525 kV switchyard and access roads with a total surface area of 27 acres, which
includes approximately 33% (9 acres) of impervious surfaces.
Outfalls (12, 13, & 25) were added after the original submittal of the permit application
identifying all of the storm water discharges. A letter was sent to the State to ask for
substantially identical status for the additional drains. This request was granted in a letter dated
8/10/2007. See Attachment # 2. As indicted above, outfalls 14 and 24 have been routed to
underground oil water separators. A new outfall, 38 was created during the re-routing of the
stormwater pipes for outfalls 14 and 24. It carries stormwater from the interior of the
switchyard. Substantially identical outfall status with outfall 006 was requested and granted in
2013. The approval letter from NCDENR in Mooresville dated 8/29/2013 is shown in
Attachment # 2.
Potential Pollutants
Transformer Oil and grease are possible pollutants from the transformers in the area. Total
suspended solids may be released from the gravel and soil in the area.
535 KV Switchyard
Oil from oil -cooled transformers (non -PCB), represent the only significant materials in the
drainage area of these outfalls. The switchyard is a graveled area that has a system of yard
drains. Transformer inspections are done by Power Delivery personnel as part of their routine
work activities in the switchyard. If problems exist they are documented for corrective action.
Page 12 of 17

OTHER DRAINAGE AREAS
Old Landfill (Inactive)
This landfill was permanently closed per the requirements of the solid waste permit in 1994. The
landfill storm water runoff is controlled with several silt fences. Runoff is directed toward the
landfill sedimentation pond. Closed trenches are covered with at least two feet of final cover.
Grass is maintained to prevent erosion and is bush -hogged annually to prevent development of
sinkholes. The landfill is fenced and is routinely patrolled by Security, who will immediately
report any unusual activity.
Firing Range
Security uses the firing range located on the South side of Hwy. 73 for qualification required by
the Nuclear Regulatory Commission. Silt fencing, mulch and grass is permanently maintained to
prevent any suspended fragments from leaving the range. The range uses lead ammunition. A
bullet collection system is used to collect the lead bullets in the new firing range. The lead from
the bullets is recycled.
Note: this area was not identified in the initial storm water permit application as the activity was
considered separate from the plant's industrial activities. Per 40 CFR 122.26 (b)(14), these areas
can be excluded "as long as drainage from the excluded area is not mixed with storm water
drained from the above described areas".
Landfarm (InActive)
A 6 acre landfarm is located beyond the switchyard on the South side of Hwy 73. Currently this
area is not being used. Grass buffers are maintained around the perimeter of the land farm and all
runoff is sheet flow from the area. The area has several monitor wells and is inspected quarterly
by Environmental Services.
Landfill (Active)
The landfill storm water runoff is directed to three landfill sediment traps. These traps receive
storm water from the exterior of the landfill which contains no significant materials. All storm
water that flows into the interior of the landfill is collected in a leachate collection pond which is
pumped to the MNS WC System's initial holdup pond (permitted by NPDES NC0024392).
Leachate is controlled by (6) six inches of compacted daily cover or a temporary water proof
tarpaulin during rainy periods. The area is routinely patrolled by Security and inspections are
done weekly by Duke Energy Environmental Services personnel who operate the landfill.
Page 13of17

Island Industrial Laboratory
An industrial laboratory located on the McGuire Site was not identified in the initial storm water
permit because the storm water drained from this area (an island separated from the site) is not
mixed with the storm water drained from the site's industrial activities.
Transformers
Oil cooled transformers are located all around the McGuire site. A few transformers have the
potential to spill to the lake or river. Security routinely patrols these areas and has been
instructed to immediately report all spills to the proper site personnel. Signs on the transformers
inform personnel of an oil spill source and who to call if they encounter a spill. Transformer
inspections are done quarterly or monthly by Environmental Services and are documented in the
SPCC Plan.
Page 14 of 17

ATTACHEMENT # 1
McGUIRE STORMWATER DRAWING
Page 15 of 17

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ATTACHMENT # 2
SUBSTANTIALLY IDENTICAL OUTFALL STATUS
DOCUMENTATION
Page 16 of 17

Lee N. Williams
Environmental, Health & Safety Manager
Duke Energy
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, NC 28078
Dear Mr. Williams:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleco H. Sullins Director
Division of Water Quality
August 10, 2007 Do rk
1
Subject: Representative Stormwater Outfall Request
Duke Energy — McGuire Nuclear Station
NCS000020
Mecklenburg County
The Division of Water Quality received your request for changes in your monitoring obligations at Duke
Energy - McGuire Nuclear Station on July 26, 2007, and a current site plan with drainage area
descriptions on August 9, 2007. Based on our understanding of your representations of current site
drainage conditions as presented in your letter and site plan, we are granting the following revision to
your monitoring obligations under NCS000020. Please maintain a copy of this letter on file at the
facility.
No sampling is required at Outfall 001, which is also permitted under Wastewater Permit
NCO024392 as Outfall 005.
2. You reported that Outfalls 004 and 006 are representative of Outfalls 029 - 032, and 037.
(DWQ approved your representative outfall request that 004 and 006 were representative of
003, 005, 007, and 009 — 028 previously in a letter dated August 28,1998.) After review of
your letter and site plan, Duke Energy may conduct the required analytical sampling on
Outfalls 004 and 006 as representative for Outfalls 003, 005, 007, 009 — 032, and 037 and may
discontinue analytical monitoring of Outfalls 003, 005, 007, 009 — 032, and 037. Please note
that Outfalls 003, 005, 007, 009 — 032, and 037 must still be included in the twice -yearly
qualitative monitoring event.
3. At Outfall 008, analytical and qualitative monitoring will be continued.
4. Since there is no stormwater runoff associated with an industrial activity as reported in your
request at Outfalls 002 and 033 — 036, no sampling is required
If you change the industrial activity in the drainage areas or significantly change the operation of your
business from its current status, you must notify the Division of Water Quality.
Please contact me with any questions or concerns at [phone] ext. 360.
tat caroli
�
U
North Carolina Division of Water Quality 1617 Mail Servioe Center Raleigh, NC 27699-1617 Phone [phone] Custorner service
Internet: www.nmniMmalityore Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax (919) 733-%12 1-877-623.6748
An Equal OppodtsritylAirowlive Action Empbyer— 50% Rerycled110% Post Consumer Paper

Lee N. Williams
Duke Energy—NCS000020
August 10, 2007
Sincerely,
Robert Patterson, PE
Environmental Engineer
cc: Mooresville Regional Office
Central Files
Stormwater Permitting Unit Files

441-
HCDENR
North Carolina Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
Land Quality Section
Tracy E. Davis, PE, CPM
Director
August 29, 2013
Mr. Steven D. Capps, Site Vice President
Duke Energy Carolinas, LLC
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, North Carolina 28078
Dear Mr. Capps:
Pat McCrory, Governor
John E. Skvarla, III, Secretary
R
E G E 0 V
SEP 4 2013
MOGUIRE NUCLEAR STATION
VICE PP.-cSIDENrs OFFICE
Subject: NPDES Stormwater Permit
Stormwater Permit Certificate of Coverage No. NCS000020
Representative Outfall Status Request
McGuire Nuclear Station
Mecklenburg County
The Mooresville Regional Office staff have reviewed your request for a determination that stormwater discharge
outfall (SDO) SWO06 be granted representative outfall status for stormwater outfall SW038. Based on the
information provided we are approving this request. In accordance with 40 CFR § 122.21(g) (7), you are
authorized to sample outfall number SWO06 as a representative outfalI. This approval is effective with the next
sampling event. We also want to remind you that the permit still requires Qualitative Monitoring be performed
at all SDOs, regardless of representative status.
Please remember that any actions you initiate in response to benchmark exceedances as directed in the tiered
response provisions of your permit must address all drainage areas represented by SDO SWO06 where
appropriate.
Please append this letter to your Stormwater Pollution Prevention Plan (SPPP) or permit to document that
representative outfall status has been approved. If changes in drainage areas, structures, processes, storage
practices, or other activities occur that significantly alter the basis of this approval, representative outfall status
Mooresville Regional Office
610 East Center Avenue, Suite 301, Mooresville, North Carolina 28115
Telephone: [phone] / FAX: [phone] • Internet http*//www.dlr.enr.state.nc.us/mesfiandQualitysecffon.html
An Equal Opportunity / Affirmative Action Employer - 50% Recycled / 10% Post Consumer Paper

NPDES Stonmwater Permit
Duke Energy Carolinas, LLC
McGuire Nuclear Station
August 29, 2013
Page 2 of 2
may no longer be valid. You should either resume sampling at all SDOs, or reapply to this office for
representative outfall status based on updated information. If you have any questions or comments concerning
this letter, please contact our Office at [phone].
Sincerely,
Zahid Saeed Khan,
Regional Supervisor
Mooresville Regional Office
cc: Stormwater Permitting File NCS000020

ATTACHMENT # 3
SWITCHYARD OIL WATER SEPARATOR
DRAWING
Page 17 of 17

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Stormwater Sampling Summary
Outfall No.
Date Sample Collected
p
50050
Total Flow 2
00530 TSS 3
39516
PCB'
50061
Oil and Grease'
00400
pH
mo/dd/ r
MG
mgIl
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SWO04
4/16/2011
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ND 6.7)
ND 260 u )
5.6
6.56
SWO04
10/11/2011
0.050
370.0
ND 260 u
ND 4.5
9.9
SWO04
4/26/2012
0.010
ND
ND
ND
6.32
SWO04
11/13/2012
0.010
ND
ND
ND
7.7
SWO04
5/5/2013
0.140
ND
ND
ND
6.7
SWO04
10/7/2013
0.070
ND
ND
ND
7.24
SWO04
5/15/2014
0.120
ND
ND
ND
7.0
SWO04
SWO04
1 12/6/2014
1 0.008
ND
ND
ND
7.1
SWO04
1 3/5/2015
1 0.035
11.0
ND
ND
6.75
SWO06
4/16/2011
0.060
ND 10)
ND 260 u )
ND 4.5)
6.8
SWO06
10/11/2011
0.030
ND 10
ND 260 u )
ND 4.5)
8.8
SWO06
4/26/2012
0.010
17.0
ND
ND
6.18
SWO06
11/13/2012
0.010
ND
ND
ND
8.5
SWO06
5/5/2013
0.090
ND
ND
ND
6.5
SWO06
1 10/7/2013
0.040
5.0
ND
ND
6.9
SWO06
5/15/2014
0.080
ND
ND
ND
6.9
SWO06
6.1
SWO06
12/6/2014
0.005
ND
ND
ND
6.5
SWO06
3/5/2015
0.131
160
ND
ND
6.79
Outfall No.
Date Sample Collected
50050
Total Flow
00530
TSS
50061
TPH
00400
pH
New Motor Oil
Usage
mo/dd/ r
MG
mgti
mgtL
unit
al/mo
SWO08
4/16/2011
0.130
33.0
ND 4.3)
6.8
106.5
SWO08
10/11/2011
0.070
6.0
ND �5
6.8
368
SWO08
4/26/2012
0.020
27.0
ND
6.30
126
SWO08
11/13/2012
0.020
34.0
ND
8.20
411
SWO08
5/5/2013
0.190
5.0
ND
6.48
488
SWO08
10/7/2013
0.090
5.0
ND
7.02
92.4
SWO08
5/15/2014
0.170
ND
ND
7.0
98
SWO08
114
SWO08
12/6/2014
0.011
11
ND
7.1
114
SWO08
3/5/2015
0.049
24
ND
7.62
114
Note 1
Please note that samples were originally pulled on 11/17/2014 but the PCB samples for Outfall 006 were misplaced by the lab.
The samples taken on 11/17/2014 were analyzed and the results are shown as the 11/17/2014 sample results.
The decision was made to re -sample all outfalls and those samples are shown as the 12/06/14 samples.
The 12/06/14 samples include the missing PCB samples for Outfall 006.
Note 2
Exceedance of TSS Bench Mark @ Outfall 006
Corrective action was taken and documented in the SWPPP as required in the permit
Note 2

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Best Management Practices Summary
Structural Best Management Practices
Wherever possible hazardous materials, oils and fuels are stored inside of buildings or
under cover.
Bulk Storage Vessels that are exposed to the elements have secondary containment or
have double wall spill containment. All of the containments are managed under the sites
SPCC Plan and are inspected at least monthly and after any rain event where greater than
1/2 inch of rain is received.
Bulk fuel and chemical loading /unloading is performed in areas with secondary
containment and controlled by procedures.
Warehouse loading docks have spill control measures in place such as concrete trenches
for spill control and are attended at all times during deliveries.
Transformers containing mineral oil in the plant transformer yards are contained in areas
with curbs or berms. The transformer yards have oil collection pits and a drainage
system that is designed to collect transformer oil from large spills. The storm drains in
the transformer yards drain to the WWCB (Waste Water Collection Basin). The WWCB
is not considered waters of the state and provide secondary containment.
The discharge canal from the plant has two spill control booms that would prevent or
restrict oil from a spill from migrating to Lake Norman.
The storm drainage system for the power block of the plant drain to two large man made
ponds that are not waters of the state. This would allow for spill cleanup on the ponds
prior to the oil getting to the Catawba River.
The discharge from the WWCB (Waste Water Collection Basin) has an underflow
discharge arrangement where if oil or other pollutants that float on the top of the water
were to be present in the basin would allow for cleanup of the oil (or other pollutants)
prior to it being discharged to the Catawba River.
An oil spill boom is in place on the WWCB prior to reaching the discharge point to the
Catawba River.

Bulk oils, fuels and hazardous materials being stored inside of the power block either
have spill containments or in the event of a spill would discharge to the turbine building
sumps. The turbine building sump discharges to the initial holdup pond where spill
cleanup could be performed.
The Oil Storage House inside the protected area of the plant contains bulk storage
containers (portable tanks and drums) of petroleum products and chemicals. This
building has a closed floor drain inside the building to control spills that may occur.
The DMSB (Discarded Materials Storage Building) is the site hazardous waste storage
building and is located outside of the protected area. The building contains drums and
other containers of hazardous waste, non -hazardous materials, universal waste, batteries,
etc. and is protected by a sunken floor with a closed drain system.
The Paint Warehouse outside of the protected area houses paints, thinners and other
chemicals of a flammable or combustible nature. The building has no drains that
discharge to the exterior of the building.
The McGuire Garage has a large concrete fuel truck spill containment area that provides
containment for 2 fuel trunks and has room for 3 additional vehicles. The containment
structure has a valve that remains closed except for when rainwater is drained from it
after it is inspected.
The fueling area at the McGuire Garage has a spill trench to capture any spilled fuels.
When fuel deliveries are received a valve at the end of the trench is closed to contain any
spills.
Erosion and sediment control measures Best Management Practices are employed as
needed to prevent erosion during activities that involve earth disturbance. Measures
include the use of silt fencing, catch basin protection, temporary spill containments for
equipment, etc.
Spill containments are required for portable equipment used onsite per the sites SPCC
Plan.
Non -Structural Best Management Practices (BMPs)
Personnel Training
Personnel are trained and qualified to do their jobs through the Employee Training and
Qualification System (ETQS) or other systematic approaches to training. CBTs and Read
Packages are utilized for specific training needs.
Personnel who perform work associated with hazardous waste activities are trained per
40CFR262 requirements.

Contractors and new employees on site receive General Employee Training, which
includes: orientation, administrative controls, quality assurance, radiological health,
safety, fire protection, emergency health, safety, fire protection, emergency plan, site
security, fitness for duty, and site specific environmental awareness. This training is
required annually for all badged personnel.
Storm water Pollution Prevention Awareness is enhanced by newsletters, posters,
Environmental Services Homepage, and other site publications.
Other specific environmental training requirements are listed in the Duke Energy
Environmental Compliance Manual. Training records are maintained primarily in
electronic format in the Nuclear Learning Management System or My Training
databases.
Site Security
MNS Site Security performs routine patrols of all areas of the site, including the landfill
areas across Highway 73.. On the routine patrols, Security force members watch for
unauthorized personnel as well as abnormal/unusual events. Security personnel are to
report conditions observed on their patrols that they feel have the potential to cause an
environmental incident.
Site Housekeeping
Nuclear System Directive 104 establishes comprehensive housekeeping requirements for
the site which includes periodic housekeeping inspections.
Preventive Maintenance
MNS utilizes a computer program system called Consolidated Asset Suite to initiate,
issue, track and trend preventative maintenance (PM) work items. PM's may involve oil
changes, lubrication, inspections, and/or complete refurbishment of various valves,
pumps, or other system equipment. The program protects against system/equipment
failures which could result in a release or spill. System/equipment repairs are also
covered under the Nuclear Asset Suite system.
Site Services uses the Dream Work Request Program to track preventative and corrective
work dealing with facilities (Buildings and Grounds) issues.
Action Tracking is a computerized corrective action program used at all 6 nuclear sites.
Through this process problems are identified and corrective actions initiated. Each site
group is required to trend problems identified through CR (Condition Reports) to
continuously improve processes. CRs associated with storm water activities are assigned
to various site groups for evaluation and correction.

Inspection Schedules
Chemistry personnel perform daily oil surveillance on the WWCB and the discharge
canal area. The SNSWP is inspected on a weekly basis and documentation for all
inspections (including daily) are listed in the ORC log, which is located in Chemistry.
Oil surveillance/unusual events are documented on Operations "Rounds" sheets daily.
these are kept electronically in Fusion.
Transformers are inspected monthly by Environmental Services as part of their monthly
Stormwater Inspections. In addition, Quarterly inspections are conducted as part of the
SPCC program on all remote transformers except those at the switchyard. The
transformers in the switchyard are inspected by Power Delivery personnel as part of their
routine work activities in the switchyard and the Switchyard SPCC Plan.
UST inventories and leak rate detection inspections are performed daily by a
computerized leak detection system (Veterroot), on Garage fuel tanks and monitored by
the Garage Personnel. Leak rate inspection data is kept at the garage office in a fire proof
safe.
The USTs inside the protected area are checked once a shift by operations personnel.
Hazardous Waste Storage areas are inspected weekly by Environmental Services
personnel. Inspection records are maintained in the Environmental Services office area.
The active landfill is inspected monthly by Site Environmental Services personnel and
documentation is located in the EHS office area. The closed landfill is inspected on a
quarterly basis by McGuire Environmental Services Documentation for this inspection is
located in the EHS office area.
Bulk storage tanks are inspected at least monthly by Environmental Services as part of
the SPCC and Stormwater inspections. These inspections are documented and
maintained in the EHS office area.
Spill and Emergency Response
The on -duty Operations Shift Manager (OSM) (on -site 24 hours a day, 7 days a week)
acts as Emergency Coordinator. The OSM is responsible for contacting the appropriate
Emergency Response personnel, SPCC coordinator, Hazmat Team, and becomes the
Incident Commander until the Hazmat Team arrives. The OSM will coordinate activities
and/or cleanup until appropriate personnel arrive on the scene
The on -site Fire Brigade team is trained in spill response. Spill cleanup materials have
been placed in employee parking areas and other outside areas where a spill could occur.

Environmental Services personnel are on call 24 hours a day, 7 days a week, in order to
aid in spill response and other emergencies.
The site also has an Emergency Response Organization (ERO) consisting of personnel
from all areas of the Plant. The ERO is trained to direct and respond to emergencies that
could occur at a Nuclear Power Plant.
Documentation of all spills (since 1991) are kept in the Action Tracking Database.
Environmental Services maintains a spreadsheet of significant spills and leaks that have
occurred on site since 1988. A copy of this spreadsheet is available by contacting
Environmental Services.
The site's Nuclear Chemical Control Program features a chemical labeling system used
for all chemicals brought on site. Before being brought on site, chemicals must be
approved through a chemical justification and evaluation process. Chemical Fact Sheets
and SDS Sheets are available through a-Trac. for all employees. Storage requirements,
container and product disposal information, and health and safety information about
products are available through the eTrac Program. Spill clean-up information is also
included. Further guidance is available in Nuclear Procedure AD-EN-ALL-0045 -
Nuclear Chemical Control Program.
Site Drum Control Program
This program is directed by site Environmental Work Practice 2.12. It has established a
mechanism to control both empty and full drums >8 gallons in capacity, to reduce the risk
of costly "mystery drums" and reduce storm water pollution from rainwater improperly
entering drums.
Erosion and Sedimentation Control
Environmental Services evaluates all land disturbing activities prior to the start of the
project and ensures an appropriate erosion control plan is developed, if needed.
Environmental Services also ensures that BMP's are used on all land disturbing activities.
The McGuire Site Services, Facilities Group has overall land management
responsibilities for the site.
Environmental Work Practice 3.1 provides guidance to the site on Erosion Control
requirements.
The majority of storm water catch basins in high use areas are posted with a sign that
directs personnel to call a responsible person prior to discharging anything into the catch
basin.
All land disturbing activities are carried out in accordance with the Corporate
Environmental Manual and EWP 3.1.

Trenching/Digging
Before any trenching and/or motorized digging is performed, all underground utilities,
piping, tanks, valves, are required to be located and appropriately marked. This helps
prevent any leaks caused by damaged system components, (ie. piping, tanks, valves, etc.),
while digging.
Application of Herbicides, Pesticides and Fertilizers
Herbicides
In the Security Isolation Zone at the Protected Area fence, Round Up is applied with a
sprayer two to three times per year, per manufacturer's instructions for vegetation control.
Round Up is also applied approximately once per year using a hand or automatic
broadcaster to the area below and beside the lower gravel parking lot, around the
perimeter of the Owner Controlled fence, at the shooting range, at the ball field, and
around the landfarm fences.
Rodeo is applied with a sprayer (per manufacturer's instructions) to the grounds around
the Final Holdup Pond and the West slope of the Standby Nuclear Service Water Pond
and inside the Switchyard approximately once per year.
Approved pesticides are applied with a machine spreader (for granular varieties) or hand
sprayer (for liquid varieties) to the landscaped areas outside of the Protected Area fence.
Round Up is applied inside the protected area once to two times a year.
Approved herbicides are applied over the entire site, including the storage yards on an as
needed basis. All herbicides are applied in accordance with their label and under the
direction of a licensed pesticide applicator.
Insecticides
Approved insecticides are applied with a machine spreader to the landscaped areas
outside of the Protected Area fence on an as needed basis.
Soil Conditioners
Lime is applied around the intake structure every other year, and once per year to
landscaped areas around the facility.
Fertilizers
10-10-10 is applied around the Isolation Zone approximately once every two years.
17-17-17 and pellet nitrogen is applied once per year to the West slope of the Standby
Nuclear Service Water Pond, the grounds around the Final Holdup Pond, the area below

and beside lower gravel parking lot, the area around the Owner Controlled fence, firing
range, ball field, landfarm, and landfill areas.
14-28-14, 12-6-6, and 10-10-10 are applied to landscaped areas outside of the Protected
Area fence on an as needed basis.
Fertilizers and other soil conditioners (lime) are applied on the landscaped areas around the site
on an as needed basis. Fertilizer and lime are also applied on closed landfill trenches to enhance
grass growth.

Summary of Significant Stormwater Changes
Addition of 2 oil water separators at the McGuire Switchyard for SPCC compliance. This
required the re-routing of stormwater outfalls 14 and 24 to the oil water separators and the
creation of Stormwater Outfall 38. The oil water separators are designed to capture transformer
oil from the interior of the switchyard should a spill occur.
The addition of 3 FLEX Buildings that house emergency response equipment to safety shut
down the plant in the event of a natural disaster. The stormwater discharges from the buildings
is not significant however the construction of the buildings required the site to obtain a
construction stormwater permit.
No changes in work processes, material handling processes, storage practices, and raw materials
used by the facility have occurred since the last permit period.

Lee N. Williams
Environmental, Health Sc Safety Manager
Duke Energy
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, NC 28078
Dear Mr. Williams:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins Director
Division of Water Quality
August 10, 2007 00
�"� 1
Subject: Representative Stormwater Outfall Request
Duke Energy — McGuire Nuclear Station
NCS000020
Mecklenburg County
The Division of Water Quality received your request for changes in your monitoring obligations at Duke
Energy - McGuire Nuclear Station on July 26, 2007, and a current site plan with drainage area
descriptions on August 9, 2007. Based on our understanding of your representations of current site
drainage conditions as presented in your letter and site plan, we are granting the following revision to
your monitoring obligations under NCS000020. Please maintain a copy of this letter on file at the
facility.
No sampling is required at Outfa11001, which is also permitted under Wastewater Permit
NCO024392 as Outfall 005.
2. You reported that Outfalls 004 and 006 are representative of Outfalls 029 - 032, and 037.
(DWQ approved your representative outfall request that 004 and 006 were representative of
003, 005, 007, and 009 — 028 previously in a letter dated August 28,1998.) After review of
your letter and site plan, Duke Energy may conduct the required analytical sampling on
Outfalls 004 and 006 as representative for Outfalls 003, 005, 007, 009 — 032, and 037 and may
discontinue analytical monitoring of Outfalls 003, 005, 007, 009 — 032, and 037. Please note
that Outfalls 003, 005, 007, 009 — 032, and 037 must still be included in the twice -yearly
qualitative monitoring event.
3. At Outfall 008, analytical and qualitative monitoring will be continued.
4. Since there is no stormwater runoff associated with an industrial activity as reported in your
request at Outfalls 002 and 033 — 036, no sampling is required
If you change the industrial activity in the drainage areas or significantly change the operation of your
business from its current status, you must notify the Division of Water Quality.
Please contact me with any questions or concerns at [phone] ext. 360.
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone]
Internet: sv",ncwaterauslity ore Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax [phone]
An Equal Opporhmlly/ llinnalivveActionEmployer —50%Recycledlt0%Post Consumer Paper
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Customer Service
1-877-623.6748

Lee N. Williams
Duke Energy NCS000020
August 10, 2007
31l 1�:j3 �_7
cc: Mooresville Regional Office
Central Files
Stormwater Permitting Unit Files
Sincerely,
Robert Patterson, PE
Environmental Engineer

Young, Brianna A
From: Safrit, Don <[e-mail]>
Sent: Monday, December 20, 2021 9:22 AM
To: Young, Brianna A
Cc: Beaver, Gregory T
Subject: [External] McGuire Nuclear Station (NCS000020)
Attachments: McGuire Nuclear Station Summary of Industrial Stormwater Data.pdf; 113021
NCS000020 McGuire Stormwater Monitoring Clarifications.pdf; NPDES SW Permit
Summary Report MNS_changes.pdf
Importance: High
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna,
As per your information request of December 7, 2021, below are our responses to your requests (in red):
I am working on renewing the individual stormwater permit for the McGuire Nuclear Station (NCS000020). I
apologize for sending this to some who may no longer be involved in this site or permit, but as the renewal
application was received back in 2015, I am unable to determine if the contacts (previously identified as Greg
Beaver, McGuire Environmental Field Support & Don Safrit, McGuire Water SME) listed on the permit
application versus those in our database are correct, so I wanted to ensure I reach the correct contacts
concerning the permit renewal.
I need additional information in order to 1) confirm that the information I have is correct and 2) make sure the
permit adequality serves the needs of the facility. Please provide the following:
• A spreadsheet summarizing all of the monitoring data that has been collected since the effective date of
the current permit; (see enclosed data summary document)
• Verification that the information in the renewal application is still complete and correct; and (no updates
necessary, still complete and correct as submitted 06.03.201 S)
• An explanation of any operational changes since the renewal application was submitted. (no updates
necessary, no substantive operational changes since renewal submittal dated 06.03.201 S)
This link will take you to an online search box where you will be able to enter your permit number and review
the facility information to make sure it is correct. Information can be updated using the links provided below,
where applicable:
• Owner, Company, or Facility Name: Name/Ownership Change (no Ownership/Permittee updates
necessary but other miscellaneous contact updates included in attached "tracked changes" version of
NCS000020 Summary Report obtained from DEMLR website)
• Owner Affiliation (i.e., someone with the company who is designated to represent the company per
signatory requirements or another authorized representative): Owner Designation/Affiliation Form (no
updates necessary; Duke Energy Carolinas, LLC is correct entity)
• Visit the eDMR Six Steps website and complete Steps 1 and 2. (no updates to current eDMR processing
aspects necessary)
• Pay outstanding permit fees on the Stormwater eP"Ment website. (no outstanding permit fees)

Once I have the above listed information, I can continue my review. You will receive a draft permit for a 30-day
comment period. During this time we will be able to address any comments or concerns you have. During the
same 30-day period, the draft will be sent to a Regional Office staff member for review as well as out to public
notice. Once all comments and concerns are addressed, you may be issued a final permit. If you are not the
correct contact for this request, would you be able to point me in the direction of who I need to speak with?
(previously identified as Greg Beaver, McGuire Environmental Field Support & Don Safrit, McGuire Water
SME)
We trust this information will meet your information needs as requested. If any additional information or discussions is
needed, please contact Greg Beaver, McGuire Nuclear Station Environmental Professional at (704.642.6845 M) or me at
(984.209.0940 M).
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
fU� DUKE
ENERGY:
From: Young, Brianna A <[e-mail]>
Sent: Wednesday, December 8, 20219:38 AM
To: Safrit, Don <[e-mail]>
Cc: Ballard, John G <[e-mail]>; Beaver, Gregory T <[e-mail]>
Subject: RE: [EXTERNAL] McGuire Nuclear Station (NCS000020)
Don,
Yes, given the upcoming holidays, 30 days is reasonable. Just please note that my review of the renewal application and
drafting of a permit cannot be completed without these items. I can hold the permit until all information has been
received.
Thank you,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred during State of Emergency)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.

Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with
the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.
From: Safrit, Don <[e-mail]>
Sent: Wednesday, December 8, 2021 9:35 AM
To: Young, Brianna A <[e-mail]>
Cc: Ballard, John G <[e-mail]>; Beaver, Gregory T <[e-mail]>
Subject: RE: [EXTERNAL] McGuire Nuclear Station (NCS000020)
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna,
Given the holidays, what are your expectations for this review/update/response? Is 30 days reasonable?
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
DUKE
ENERGY#
From: Young, Brianna A <[e-mail]>
Sent: Wednesday, December 8, 2021 9:07 AM
To: Safrit, Don <[e-mail]>
Cc: Ballard, John G <[e-mail]>; Beaver, Gregory T <[e-mail]>
Subject: RE: [EXTERNAL] McGuire Nuclear Station (NCS000020)
Good morning Don,
Thank you for your prompt response. Please let me know if you have any questions as you review items.
Regards,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred during State of Emergency)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604

Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with
the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.
From: Safrit, Don <[e-mail]>
Sent: Tuesday, December 7, 2021 1:54 PM
To: Young, Brianna A <[e-mail]>
Cc: Ballard, John G <[e-mail]>; Beaver, Gregory T <[e-mail]>
Subject: FW: [EXTERNAL] McGuire Nuclear Station (NCS000020)
Importance: High
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna,
John Ballard, Greg Beaver and I are the appropriate contacts for this industrial stormwater permit serving the McGuire
Nuclear Station. John & Greg are located at the site and handle day-to-day McGuire Nuclear Station environmental
matters. I am located in our Raleigh Regional Headquarter Office and I support McGuire, Harris & Brunswick Nuclear
Stations in addition to the Marshall Steam Station and the Asheville Plant (and associated industrial stormwater/process
NPDES permits).
Please give us a chance to review your questions below and we will address them accordingly.
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
DUKE
ENER Y
From: Young, Brianna A <[e-mail]>
Sent: Tuesday, December 7, 2021 12:34 PM
To: Capps, Steven D <[e-mail]>; [e-mail]
Cc: Ray, Tom <[e-mail]>; Bednarcik, Jessica L <[e-mail]>
Subject: [EXTERNAL] McGuire Nuclear Station (NCS000020)
Importance: High

Good afternoon,
I am working on renewing the individual stormwater permit for the McGuire Nuclear Station (NCS000020). I
apologize for sending this to some who may no longer be involved in this site or permit, but as the renewal
application was received back in 2015, I am unable to determine if the contacts listed on the permit application
versus those in our database are correct, so I wanted to ensure I reach the correct contacts concerning the permit
renewal.
I need additional information in order to 1) confirm that the information I have is correct and 2) make sure the
permit adequality serves the needs of the facility. Please provide the following:
• A spreadsheet summarizing all of the monitoring data that has been collected since the effective date of
the current permit;
• Verification that the information in the renewal application is still complete and correct; and
• An explanation of any operational changes since the renewal application was submitted.
This link will take you to an online search box where you will be able to enter your permit number and review
the facility information to make sure it is correct. Information can be updated using the links provided below,
where applicable:
• Owner, Company, or Facility Name: Name/Ownership Change Form
• Owner Affiliation (i.e., someone with the company who is designated to represent the company per
signatory requirements or another authorized representative): Owner Designation/Affiliation Form
• Visit the eDMR Six Steps website and complete Steps 1 and 2.
• Pay outstanding permit fees on the Stormwater ePayment website.
Once I have the above listed information, I can continue my review. You will receive a draft permit for a 30-day
comment period. During this time we will be able to address any comments or concerns you have. During the
same 30-day period, the draft will be sent to a Regional Office staff member for review as well as out to public
notice. Once all comments and concerns are addressed, you may be issued a final permit. If you are not the
correct contact for this request, would you be able to point me in the direction of who I need to speak with?
Please contact me if you have any questions.
Thank you,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred during State of Emergency)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with

the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.

�� ENERGY
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
November 30, 2021
Ms. Briana Young
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ DEMLR
1612 MSC
Raleigh, NC 27699-1612
Subject: Duke Energy Carolinas, LLC
McGuire Nuclear Station
NPDES Permit No. NCS000020
Mecklenburg County
Dear Ms. Young,
Duke Energy
McGuire Nuclear Station
12700 Haaers Feny Road
Huntersville, NC 28078
In accordance with guidance and clarifications recently provided by your office, it has been determined
that the current permit should be read as requiring the monitoring listed in Table 1 at all outfalls, and
the monitoring listed in Table 5 is supplemental monitoring for outfalls with vehicle maintenance areas.
Therefore, based on the current permit, PCB monitoring is required for all outfalls present, including
those with vehicle maintenance areas.
Part II, Section B: Analytical Monitoring Requirements - Table 1:
Discharge
Units
Measurement
Sample Type
Sample Location
Characteristics
Frequency
Total Suspended
mg/I
semi-annual
Grab
SDO
Solids
Polychlorinated
ug/I
semi-annual
Grab
SDO
Biphenols
TPH [EPA Method
mg/I
semi-annual
Grab
SDO
1664 (SGT-HEM)]
pH
standard
semi-annual
Grab
SDO
Total Rainfall
inches
semi-annual
Rain Gauge
-

Part II, Section B: Analytical Monitoring Requirements - Table 5:
Discharge
Units
Measurement
Sample Type
Sample Location
Characteristics
Frequency
pH
standard
semi-annual
Grab
SDO
TPH [EPA Method
mg/I
semi-annual
Grab
SDO
1664 (SGT-HEM)]
Total Suspended
mg/I
semi-annual
Grab
SDO
Solids
Total Rainfall
inches
semi-annual
Rain Gauge
New Motor Oil
gallons/month
semi-annual
Estimate
-
Usage
We have also been instructed to sample and report Oil & Grease (mg/1) as opposed to TPH [EPA Method
1664 (SGT-HEM)] for all outfalls, including Outfall 008. Therefore, our understanding is our reporting
obligations for Outfall 008 henceforth will be:
Discharge
Units
Measurement
Sample Type
Sample Location
Characteristics
Frequency
pH
standard
semi-annual
Grab
SDO (Outfall 008)
Polychlorinated
ug/I
semi-annual
Grab
SDO (Outfall 008)
Biphenols
Non -Polar Oil &
mg/I
semi-annual
Grab
SDO (Outfall 008)
Grease by EPA
Method 1664
(SGT-HEM)
Total Suspended
mg/I
semi-annual
Grab
SDO (Outfall 008)
Solids
Total Rainfall
inches
semi-annual
Rain Gauge
New Motor Oil
gallons/month
semi-annual
Estimate
-
Usage
We also understand these parameters and other monitoring requirements will be evaluated during the
upcoming renewal process for NPDES Permit NCS000020. We respectfully request consideration be
given to elimination of Polychlorinated Biphenols for Table 1 consistent with current NC DEQ DWR
policies and procedures for similar nuclear steam electric generation facilities.
If any further clarifications or corrections are needed, please contact Mr. Greg Beaver, McGuire Senior
Environmental Professional, at [phone] (0) or [phone] (M).
Sincer5ly,
Edward R. Pigott, Plant Manager
McGuire Nuclear Station

McGuire Nuclear Station Summary of Industrial Stormwater Data
Part A: Specific Monitoring Requirements
Outfall
No.
Date
Sample
Collected
50050
00530
39516
50061
50061
00400
Total
Flow
TSS
PCB
TPHa
Oil and
Grease
pH
mo/dd/yr
MG
mg/L
ng/l
ug/l
mg/L
S.U.
SW004
4/16/2011
0.090
ND
ND
5.6
6.56
10/11/2011
0.050
370.0
ND
ND
9.9
4/26/2012
0.010
ND
ND
ND
6.32
11/13/2012
0.010
ND
ND
ND
7.7
5/5/2013
0.140
ND
ND
ND
6.7
10/7/2013
0.070
ND
ND
ND
7.24
5/15/2014
0.120
ND
ND
ND
7.0
11/17/2014
0.060
ND
ND
6.6
12/6/2014
0.008
ND
ND
ND
7.1
3/5/2015
0.035
11.0
ND
ND
6.75
12/14/2015
0.010
<5.0
ND
ND
6.6
5/17/2016
0.034
6.2
ND
ND
6.17
11/29/2016
0.020
<5
ND
ND
8.57
6/4/2017
0.025
7.0
ND
ND
7.02
11/7/2017
0.033
11
ND
ND
8.5
6/26/2018
0.005
6.00
ND
ND
6.94
11/23/2018
0.030
18.00
ND
ND
7.26
4/12/2019
0.018
29.00
ND
ND
7.13
10/26/2019
0.035
10.00
ND
ND
7.84
2/5/2020
0.012
55.00
ND
ND
7.7
11/11/2020
0.033
3.80
ND
ND
6.6
5/3/2021
0.144
28.0
ND
ND
7.0
9/16/2021
0.022
1.7
ND
ND
7.48
SW006
4/16/2011
0.060
ND
ND
ND
6.8
10/11/2011
0.030
ND
ND
ND
8.8
4/26/2012
0.010
17.0
ND
ND
6.18
11/13/2012
0.010
ND
ND
ND
8.5
5/5/2013
0.090
ND
ND
ND
6.5
10/7/2013
0.040
5.0
ND
ND
6.9
5/15/2014
0.080
ND
ND
ND
6.9
11/17/2014
0.040
ND
ND
6.1
12/6/2014
0.005
ND
ND
ND
6.5
3/5/2015
0.131
160
ND
ND
6.79
12/14/2015
0.037
13
ND
ND
6.5

McGuire Nuclear Station Summary of Industrial Stormwater Data
Part A: Specific Monitoring Requirements Cont.
Outfall
No.
Date
Sample
Collected
50050
00530
39516
50061
50061
00400
Total
Flow
TSS
PCB
TPHa
Oil and
Grease
pH
mo/dd/yr
MG
mg/L
ng/l
ug/l
mg/L
S.U.
SWO06
5/17/2016
0.129
7
ND
ND
6.22
11/29/2016
0.074
6.2
ND
ND
7.79
6/4/2017
0.094
21
ND
ND
7.68
11/7/2017
0.123
36
ND
ND
7.14
6/26/2018
0.018
7.00
ND
ND
7.73
11/23/2018
0.112
<5
ND
ND
7.67
4/12/2019
0.067
<5
ND
ND
7.34
10/26/2019
0.133
12.00
ND
ND
7.67
2/5/2020
0.045
5.10
ND
ND
7.6
11/11/2020
0.123
<2.5
ND
ND
7.0
5/03/2021
0.007
5.3
ND
ND
8.0
9/16/2021
0.001
<1
ND
ND
7.76
Notes
a. Shaded result cells represent guidance to sample/analyze Oil & Grease as opposed to TPH as
included in NCS000020. Clarification letter sent 11/30/2021.
Part B: Vehicle Maintenance Activity Monitoring Requirements
Outfall
No.
Date
Sample
Collected
50050
00530
50061
00400
50061
Total
Flow
TSS
TPHa
pH
New Motor Oil
Usage
Oil and
Greasea
mo/dd/yr
MG
mg/1
mg/1
S.U.
gal/mo
mg/L
SWO08
4/16/2011
0.130
33.0
ND
6.8
106.5
10/11/2011
0.070
6.0
ND
6.8
368
4/26/2012
0.020
27.0
ND
6.30
126
11/13/2012
0.020
34.0
ND
8.20
411
5/5/2013
0.190
5.0
ND
6.48
488
10/7/2013
0.090
5.0
7.02
92.4
ND
5/15/2014
0.170
ND
7.0
98
ND
11/17/2014
0.080
35.0
6.5
114
ND
12/6/2014
0.011
11.0
7.1
114
ND
3/5/2015
0.049
24
7.62
114
ND
12/14/2015
0.014
230
7.1
368
ND
5/17/2016
0.048
20
ND
6.25
106

McGuire Nuclear Station Summary of Industrial Stormwater Data
Part B: Vehicle Maintenance Activity Monitoring Requirements Cont.
Outfall
No.
Date
Sample
Collected
50050
00530
50061
00400
50061
Total
Flow
TSS
TPH'
pH
New Motor Oil
Usage
Oil and
Grease'
mo/dd/yr
MG
mg/1
mg/1
S.U.
gal/mo
mg/L
SWO08
11/29/2016
0.027
26
ND
7.95
84
6/4/2017
0.035
44
ND
7.35
67.4
11/7/2017
0.046
67
ND
7.94
66.4
6/26/2018
0.007
10.0
ND
7.74
73.3
11/23/2018
0.042
19.0
ND
7.45
75.02
4/12/2019
0.025
6.4
ND
7.54
83.44
10/26/2019
0.049
6.0
ND
8.13
51.52
2/5/2020
0.017
10.0
ND
7.3
47
11/11/2020
0.046
6.6
ND
7.0
68.6
5/3/2021
0.144
11.0
ND
7.48
64.5
9/16/2021
0.001
<1
7.95
71.6
ND
Notes
a. Shaded result cells represent guidance to sample/analyze Oil & Grease as opposed to TPH as
included in NCS000020. Clarification letter sent 11/30/2021.

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Permit Number: NCS000020 Permit Status: Expired
Permit Type: Stormwater Discharges Individual
Facility Name: McGuire Nuclear Power Plant
Facility Addressi: NC Hwy 73
Facility Address2:
City, State & Zip: Huntersville, NC 28078
Owner Information Details:
MUST submit a Change of Name/Ownership form to DEMLR to make any changes to this Owner information.
(Click Here for "Change of Name/Ownership" Form)
Owner Name: Duke Energy Carolinas LLC
Owner Type: Non -Government Owner Type Group: Organization
*** Legally Responsible for Permit ***
(Responsible corporate officer/principle executive officer or ranking elected official/general partner or proprietor;
or any other person with delegated signatory authority from the legally responsible person.)
Owner Affiliation: Jessica Bednarcik Title:
Addressi: 526 S Chruch St
Address2: Mail Code Ec13k
City, State & Zip: Charlotte, NC 28201-1002
Work Phone: [phone] Fax:
Email Address: iessica.bed narcik(a)duke-energy.com
*** Permit Annual Fee Billing ***
Billing Month: February
Invoice Number Invoice Date Invoice Due Date Invoice Amount Invoice Status
Owner Contact Person(s)
11/23/2021 Page 1

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Contact Name Title
Bet1385
r
Address
rSalisbury, NG
Phone
711A C7'OT 630 3—
Fax
Email
Ronnie
G66dffk�Fi
175 Steam Plant Rd Mt Hell., NG 28120
812 551 z155
LC7f7—rQR7G
2599 FaiFFax,GFeenslaeFe, NG
336851TJrO'
en
Steve1eFa.telI*e@dul(e
rRaleigl�,,�
l3
919 r�57
919 516 1109
„tee eah. n@ l..l.
e eneFgy.
Gromny
s.eek ING
311 r
C�5 Pine Hall Rd Bele !` 09
79i 7
��
,.I�
7CTTQlTfCRTPPTJG
�sChu "'cTl-St, CCi , NG 28202
700373'DD-Sr
Cynthia Winston
410 S Wilmington St, Raleigh, NC 27602
919-546-5538
cynthia.winston@d
uke-energy.com
518 Celle Mill G Matthews, NG 28101
r r
79i79i r��
, Charlette, NG
2O2nzvr0i io oz
980 373 0530
CRLR17
I(e-eneFgy.COF�1
Kevin c i,.i..n,.,.n
526 S GhFLiEh .St, GhaFlette—, NG
282n�02-
Inn�c611
l(sjehnse„mac
neFgy
W i nvv McCabe
526 C rl, r Ell cr r M .I +, 4G
r r
282/1�7L011002-
MayuF Patel
526 C P`huF— . C4 C_ T !10 Q, Chile++.,
nlli
70q 7�8ir
�
io� VP Administrative
Sefvfees
550 C T.-.....-. St P`L.-..lett.. NG 28292
711A 7TVT 82 559T
i I�edney.Gaddy@du
I(e eneFgy.eem
EFOe Rebisc
5550 S Tiy6R St, Charlene, NG 28202
non�ov- 2
Steve D Hodges
573 Duke Power Rd, Mooresboro, NC
28114
828-657-2000
828-657-2060
Pau'DFaeviteh
on Box 1006, Ma 1 Code E G 13 v r
980 373 Oq88
Pau'. DFaeYOtEh@daharletteI(e-eneFgy-.eef
TFayms cariF
on ❑ex 1 nn7 r GhaFlett r NG
707l�07
79191 382 692-0
7N382 8611
tFayi. , nclamF@d l(e
RebeFt F Tayl@F PFejeet ManagefT-
r,,.n,)Fat , Real Estate
SefyIEes
c4 30d nn 13— 1007, rl.... lette niG
2820i
Inn 7j pT 382 6227
Fe`e y'eF@du'"e ene
Fgy.eeRg
Lee A r
Facility Contact Person(s)
ctd 30 nn Bee 1097, r`L.aFiett NG
r
2820 i
nonce 7�=
Inn�19
�Od
neFgy:e6ffl
Contact Name Title
Thomas D Ray Site Vice President
Address
12700 Hagers Ferry Rd, Huntersville, NC
28078
Phone
980-875-4805
Fax
Email
tom.ray@duke-ener
gy.com
Permit Contact Person(s)
Contact Name Title
Angela M Greeffis
Address
12700 Hagers Ferry r r
rH a RteF9vmc, faCz2897o
Phone
Inn 875 5958
OT
T� JQ
Fax
Email
Gregory Beaver Senior EHS Professional
12700 Hagers Ferry Rd,
Huntersville, NC 28078
980-875-2287
Gregory. Beaver( duke
-energy.com
John Ballard Senior EHS Professional
12700 Hagers Ferry Rd,
Huntersville. NC 28078
980-875-5227
John.BallardC�duke-
energy.com
Don Safrit Water SME
410 S Wilmington St, Raleigh NC
27602
919-546-6146
don.safritC&duke-
energy.com
Permit Billing Contact(s)
Contact Name Title
Cynthia Winston
11/23/2021
Address
410 S Wilmington St, Raleigh, NC 27602
Phone
919-546-5538
Fax
Email
cynthia.winston@du
Page 2

NC Division of Energy, Mineral and Land Resources
NPDES Stormwater Permit Summary
NC DEMLR has the following information in our Permit Database for your permit as of 11/23/2021.
Person(s) with Delegated Signatory Authority MA
Type Contact Name Title Address Phone Fax Email
PeFffl j*Fn Kammer Safety Assuranee 12700 HageFs Ferry Rd, 70i 875 589i
Permit Regis ReykeEd Station Manager 12700 Hagers Ferry Rd, 980-875- Ed.Pigott(@duke-energy.com
igm Huntersville, NC 28078 4111701 875
5894
Permit Brent Bare Operations 12700 Hagers Ferry Rd, 980-875-3669 Brent. Bare@)duke-energy.com
Manager Huntersville, NC 28078
Person(s) with Electronic Signature Authority
Type Contact Name Title Address Phone Fax Email
Outfalls 9r
Outfall #: 004 Outfall Description: Unknown
Outfall Lattitude: 35.435830 Outfall Longitude:-80.943610 Represented by Outfall:
% Stormwater: % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Outfall #: 006 Outfall Description: Unknown
Outfall Lattitude: 35.420830 Outfall Longitude:-80.949170
Stormwater: 100 % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Outfall #: 008 Outfall Description: Unknown
Outfall Lattitude: 35.426110 Outfall Longitude:-80.943060
Stormwater: 100 % Industrial:
Basin
Catawba
Waterbody Name
CATAWBA RIVER (Lake Norman below elevation 760)
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV,B;CA
Represented by Outfall:
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV, B; CA
Represented by Outfall:
Stream
Index Number
11-(75)
Waterbody
Classification
WS-IV,B;CA
11/23/2021 Page 3

Young, Brianna A
From: Safrit, Don <[e-mail]>
Sent: Tuesday, December 7, 2021 1:54 PM
To: Young, Brianna A
Cc: Ballard, John G; Beaver, Gregory T
Subject: FW: [EXTERNAL] McGuire Nuclear Station (NCS000020)
Importance: High
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Brianna,
John Ballard, Greg Beaver and I are the appropriate contacts for this industrial stormwater permit serving the McGuire
Nuclear Station. John & Greg are located at the site and handle day-to-day McGuire Nuclear Station environmental
matters. I am located in our Raleigh Regional Headquarter Office and I support McGuire, Harris & Brunswick Nuclear
Stations in addition to the Marshall Steam Station and the Asheville Plant (and associated industrial stormwater/process
NPDES permits).
Please give us a chance to review your questions below and we will address them accordingly.
Thanks, Don
Donald (Don) Safrit, P.E.
Lead Environmental Specialist
Duke Energy I Permitting and Compliance, Carolinas
410 S. Wilmington Street I Raleigh, North Carolina 27601
Office: [phone] 1 Cell: [phone]
DUKE
ENER Y
From: Young, Brianna A <[e-mail]>
Sent: Tuesday, December 7, 2021 12:34 PM
To: Capps, Steven D <[e-mail]>; [e-mail]
Cc: Ray, Tom <[e-mail]>; Bednarcik, Jessica L <[e-mail]>
Subject: [EXTERNAL] McGuire Nuclear Station (NCS000020)
Importance: High
Good afternoon,
I am working on renewing the individual stormwater permit for the McGuire Nuclear Station (NCS000020). I
apologize for sending this to some who may no longer be involved in this site or permit, but as the renewal

application was received back in 2015, I am unable to determine if the contacts listed on the permit application
versus those in our database are correct, so I wanted to ensure I reach the correct contacts concerning the permit
renewal.
I need additional information in order to 1) confirm that the information I have is correct and 2) make sure the
permit adequality serves the needs of the facility. Please provide the following:
• A spreadsheet summarizing all of the monitoring data that has been collected since the effective date of
the current permit;
• Verification that the information in the renewal application is still complete and correct; and
• An explanation of any operational changes since the renewal application was submitted.
This link will take you to an online search box where you will be able to enter your permit number and review
the facility information to make sure it is correct. Information can be updated using the links provided below,
where applicable:
• Owner, Company, or Facility Name: Name/Ownership Change Form
• Owner Affiliation (i.e., someone with the company who is designated to represent the company per
signatory requirements or another authorized representative): Owner Designation/Affiliation Form
• Visit the eDMR Six Steps website and complete Steps 1 and 2.
• Pay outstanding permit fees on the Stormwater ePUment website.
Once I have the above listed information, I can continue my review. You will receive a draft permit for a 30-day
comment period. During this time we will be able to address any comments or concerns you have. During the
same 30-day period, the draft will be sent to a Regional Office staff member for review as well as out to public
notice. Once all comments and concerns are addressed, you may be issued a final permit. If you are not the
correct contact for this request, would you be able to point me in the direction of who I need to speak with?
Please contact me if you have any questions.
Thank you,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail] (e-mail preferred during State of Emergency)
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, NC 27699-1612
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted
operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts.
To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with
the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.

DUKE
ENERGY,
June 23, 2015
Mr. Mike Randall
North Carolina Department of
Environment and Natural Resources
Division of Water Resources
Stormwater and General Permits Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Duke Energy
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, NC 28078
Subject: Duke Energy/McGuire Nuclear Station
Renewal Application for NPDES Stormwater Permit #: NCS000020
Certified Mail: 7010 2780 0000 7412 4274
Dear Mr. Randall:
Duke Energy, McGuire Nuclear Station submits the following NPDES stormwater
permit renewal application for NPDES Stormwater Permit Number NCS000020, which
expires December 31, 2015. The attached permit application consists of two (2) copies of
the following documentation as required by the NC Division of Water Resources:
1. Stormwater Permit Renewal Application Form & Certification
2. Stormwater Pollution Prevention Plan Development and Implementation
Certification.
3. Supplemental Information Required for Renewal of Individual NPDES
Stormwater Permit.
• Site Map from the Stormwater Pollution Prevention Plan.
• A summary of Analytical Monitoring results during the term of the
existing permit.
• A summary of the Visual Monitoring results.
• A summary of the Best Management Practices used at our facility.
• A short narrative describing any significant changes in industrial activities
at our facility.
In addition to ther required information, we have provided supplemental information that
contains a description of our overall facility, types of stormwater discharges, stormwater
drainage areas and stormwater outfall locations.
We would like to request the following changes to the permit:

Remove outfall 29, 30, 31, 32. These are internal outfalls as follows:
Outfall 29 internal to 16
Outfall 30 internal to 17
Outfall 31 internal to 18
Outfall 32 internal to 15
Removal of Outfalls 33 — 36. These outfalls do not discharge stormwater from an
industrial process. These were removed by letter from NCDENR dated August 10, 2007.
See Attachment # 2 to the Supplemental Information.
Re -number Outfalls along the discharge canal so they will be somewhat sequential and
remove error traps / confusion for inspections.
Outfall 003 re -numbered to 005
Outfall 005 re -numbered to 003
Outfall 032 re -numbered to 015
Outfall 015 re -numbered to 016
Outfall 016 re -numbered to 017
Outfall 017 re -numbered to 018
Outfall 018 re -numbered to 019
Outfall 019 re -numbered to 020
The supplied stormwater drawing reflects the changes requested to the outfalls listed
above. None of the changes in outfall numbers were to outfalls that required analytical
monitoring.
Should you have any questions concerning the NPDES Stormwater Permit Renewal
application, you may contact John C. Williamson by email at John.Williamson@duke-
energy.com or phone [phone].
I certify, under penalty of law, that this document and all attachments were prepared under my direct
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based upon my inquiry of the person or persons who manage the
system, or those persons directly responsible for gathering the information, the information submitted is, to
the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant
penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations.
Sincerely,
Steve D. Capps
Duke Energy
McGuire Nuclear Station
McGuire Site Vice President

Renewal Application Form
NCDENR National Pollutant Discharge Elimination System NPDES Permit Number
N
Stormwater Individual Permit CS00020
Please provide your permit number in box in the upper right hand corner, complete the information in the space provided
below and return the completed renewal form along with the required supplemental information to the address indicated.
Owner Information
* Address to which permit correspondence will be mailed
Owner / Organization Name:
Duke Energy Carolinas, LLC
Owner Contact:
Mr. Steven D. Capps, Site Vice President
Mailing Address:
12700 Hagers Ferry Road
Huntersville, NC 28078
Phone Number:
980.875.4805
Fax Number:
E-mail address:
[e-mail]
Facility Information
Facility Name:
McGuire Nuclear Station
Facility Physical Address:
12700 Hagers Ferry Road
Huntersville, NC 28078
Facility Contact:
Mr. John C. Williamson
Malling Address:
12700 Hagers Ferry Road
Huntersville, NC 28078
Phone Number:
980.875.5894
Fax Number:
980.875.4627
E-mail address:
[e-mail]
Permit Information
Permit Contact:
Mr. John C. Williamson
Mailing Address:
12700 Hagers Ferry Road
Huntersville, NC 28078
Phone Number:
980.875.5894
Fax Number:
980.875.4627
E-mail address:
[e-mail]
Discharge Information
Receiving Stream:
Catawba River & Lake Norman
Stream Class:
Class WS-IV & Class WS-IV B
Basin:
Catawba River Basin
Sub -Basin:
030832
Number of Outfalls:
Facility/ActivityFacility/Activity Changes Please describe below any changes to your facility or activities since issuance of your permit. Attached a
separate sheet if necessary.
There have been no significant changes in the industrial activity since the renewal of Stormwater Permit NCS000020 issued on
December 15, 2010. There have been no significant changes in work processes, material handling processes, storage practices,
or raw materials used by the facility since the renewal of Stormwater Permit NCS000020 issued on December 15, 2010.
CERTIFICATION
I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief
such information is tr , p and accurate. / /
Signature Date 0 6 i zg ` /215�
OAPPZ I "usgc Sag Via P,437wyr
Print or type name of person signing above Title
SW Individual Permit Coverage Renewal
Please return this completed application form Stormwater Permitting Program
and requested supplemental information to: 1612 Mail Service Center
Raleigh, North Carolina 27699-1612

SUPPLEMENTAL INFORMATION REQUIRED FOR RENEWAL OF INDIVIDUAL
NPDES STORMWATER PERMIT
Two copies of each of the following shall accompany this submittal in order for the application
to be considered complete:
(Do not submit the site Stormwater Pollution Prevention Plan)
Initials
1. A current Site Map from the Stormwater Pollution Prevention Plan. The location of
industrial activities (including storage of materials, disposal areas, process areas and
loading and unloading areas), drainage structures, drainage areas for each outfall,
building locations and impervious surfaces should be clearly noted.
112. A summary of Analytical Monitoring results during the term of the existing permit
(if your permit required analytical sampling). Do not submit individual lab reports.
The summary can consist of a table including such items as outfall number,
/ parameters sampled, lab results, date sampled, and storm event data.
✓ 3. A summary of the Visual Monitoring results. Do not submit individual monitoring
reports. The summary can consist of a table including such items as outfall number,
parameters surveyed, observations, and date monitoring conducted.
t✓ 4. A summary of the Best Management Practices utilized at the permitted facility.
Summary should consist of a short narrative description of each BMP's in place at
the facility. If the implementation of any BMP's is planned, please include
information on these BMP's.
✓ 5. A short narrative describing any significant changes in industrial activities at the
permitted facility. Significant changes could include the addition or deletion of
work processes, changes in material handling practices, changes in material storage
practices, and/or changes in the raw materials used by the facility.
✓ 6. Certification of the development and implementation of a Stormwater Pollution
Prevention Plan for the permitted facility (Sign and return attached form).
If the final year analytical monitoring of the existing permit term has not been completed
prior to filing the renewal submittal, then the last years monitoring results should be submitted
within 30 days of receipt of the laboratory reports. (i.e. do not withhold renewal submittal
waiting on lab results)

STORMWATER POLLUTION PREVENTION PLAN
DEVELOPMENT AND IMPLEMENTATION
CERTIFICATION
North Carolina Division of Energy, Mineral, and Land Resources - Stormwater Permitting
Facility Name: McGuire Nuclear Station
Permit Number: NCS000020
Location Address: 12700 Hagers Ferry Road
Huntersville, NC 28078
County: Mecklenburg
"I certify, under penalty of law, that the Stormwater Pollution Prevention Plan (SPPP) document and all attachments were
developed and implemented under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information required by the SPPP. Based on my inquiry of the
person or persons who manage the system, or those persons directly responsible for gathering the information, the
information gathered is, to the best of my knowledge and belief, true, accurate and complete."
And
"I certify that the SPPP has been developed, signed and retained at the named facility location, and the SPPP has been
fully implemented at this facility location in accordance with the terms and conditions of the stormwater discharge
permit."
And
"I am aware that there are significant penalties for falsifying information, including the possibility of fines and
imprisonment for knowing violations."
Sign (according to permit signatory requirements) and return this Certification. DO NOT
SEND STORMWATER POLLUTION PREVENTION PLAN WITH THIS CERTIFICATION.
Signature
D CAPPS
Print or type name of person signing above
Date D6 129/l.5
MCGu►iRC 51 rC YICE PREs/ter
Title
SPPP Certification 10/13

McGUIRE NUCLEAR STATION
STORMWATER DRAINAGE INFORMATION
STORMWATER PERMIT No. NCS000020
The following is a description of storm water drainage areas, storage practices, loading and
unloading activities, containment features and best management practices for preventing
pollution of the soil and water.
The description of each outfall includes the approximate area drained, percentage of impervious
area, receiving water and the latitude and longitude of each discharge.
SITE DESCRIPTION
The McGuire Nuclear Site is a 2 unit, electric generation plant. The McGuire site covers a total
of 580 acres and includes a 30 acre plant yard. It is bound to the West by the Catawba River and
to the North by Lake Norman. The site area varies in elevation from 650 to 800 feet. The power
house yard is at elevation 760. The Administration Building and parking areas are at elevation
747 and the 230-525 kV switch yard, south of Highway N.C. 73, is at elevation 738. Lake
Norman, with a full pond at elevation 760, is retained to the Northeast by an abutment dike
which has a crest elevation at the site of 780 feet. The site topography is generally flat with
some rolling hills in the outlying undeveloped areas.
The general soil profile at the site is typical of residual soils produced from weathering of
crystalline rock. The profile shows clay like surface soils grading into stiff to very stiff sandy
micaceous silt. The travel of groundwater between the site and river was estimated at
approximately 6 to 8 years, based on a permeability of 300 feet per year and a porosity of 0.10.
Following is a description of drainage areas, storage practices, loading activities, containment
features and best management practices for preventing pollution of the soil and water. The
description of each outfall includes the approximate area drained, percentage of impervious area,
receiving water and the "accurate" latitude and longitude of each discharge.
The site is broken down into 5 distinct drainage areas. Area # 1 consists of the Discharge Canal
Drainage Area and is comprised of Stormwater Outfalls 3, 4, 5, 15, 16, 17, 18, 19, 20, 21, and 22.
Area # 2 consists of the Plant Area and is comprised of Stormwater Outfall 001.
Area # 3 consists of the Low Level Intake Area and is comprised of Stormwater Outfall 002.
Area # 4 consists of the McGuire Garage and is comprised of Stormwater Outfall 008.
Area # 5 consists of the McGuire Switchyard and is comprised of Stormwater Outfalls 6, 7, 9,
10, 11, 12, 13, 14, 23, 24, 25, 26 27, 28, 37, and 38.
Page 1 of 17

The drainage areas are shown on the attached Stormwater Drawing. See Attachment # 1.
Note: Accuracy of latitude and longitude required by EPA (stormwater discharge application) was
to the nearest 15 seconds.
DRAINAGE AREA # 1— DISCHARAGE CANAL
OUTFALLS 3, 4, 5,15,16,17,18,19, 20, 21, & 22.
Coordinate Location:
3: X: 1420631.9 Y: 619058.68
4: X 420795.30, "Y"619049.60
5: X: 1420981.3 Y: 619067.76
15: X: 1419987.7 Y: 618849.8
16: "X: 1419987.7 Y: 618849.8
17: X: 1420122.56 Y: 619183.25
18: X: 1420029.11 Y: 619085.5
19: X: 141996034.3 Y: 618987.73
20: X: 1419946.21 Y: 618871.85
21: X1419960.29, "Y"618770.08
22: X1419981.95, "Y"618661.34
Discharge Structure:
Plastic and Metal Corrugated Pipe
Source:
Metal and Cable Storage Area
Location:
Northeast of plant, South side of Discharge
Canal
Total Surface Area
Approximately 8 acres
Drained:
Receiving Water:
Lake Norman
General Area Description
Outfalls 3, 4, & 5 and other substantially identical outfalls (15, 16, 17, 18, 19, 20, 21, & 22) (see
note below) provide drainage from a graveled lay down storage yard. Impervious areas include the
loading docks, roof of the Discarded Materials Storage building, paint warehouse and the facilities
maintenance shop. Approximately 2.5% (0.2 acres) of the surface area is impervious.
Note: Outfalls (15, 16, 17, 18, 19, 20, 21 & 22) were added after the original submittal of the
permit application identifying all of the site's storm water discharges. Because the State deemed
that Outfalls 3 & 5 were substantially identical to 4, a letter was sent to the State to ask for the
same status for the additional drains. Substantial Identical Outfall Status was granted in a letter
from NCDENR in Mooresville dated 8/10/2007. See Attachment 2.
Page 2of17

Potential Pollutants
Iron, copper and oil and grease are possible pollutants from the stored materials in the area. Total
suspended solids may be released from the gravel and soil in the area.
Warehouse # 3 Storage Yard
This area serves as a lay down storage yard for metal, pipe, empty drums and other misc.
materials. In addition storage is provided in this yard for 2 spare transformers for the plant.
Both transformers have spill containments. These transformers are monitored under the site
SPCC plan on a monthly basis.
The entire storage area is graded to a gradual slope toward the discharge canal. The discharge
canal side is surrounded by a grassed berm which prevents uncontrolled surface area run off into
the canal. The yard area is predominately gravel with rock rip rap areas near the discharge points
that are routed into storm drains.
The area is inspected monthly by Environmental Services personnel.
Discarded Materials Storage Building (DMSB)
This building has approximately 4150 square feet of floor area under roof. Hazardous waste
such as paint wastes, solvents, lab packs, and used oils are stored and shipped off -site from this
building. Spills inside the building enter the building's spill collection system which consist of 2
dry sump trenches.
Note: The collection system has no discharge point outside of the building. Any spillage would
be pumped out and collected for disposal.
There are no storm drains around the exterior of the building as well. Oils and other materials
are removed from the building by pumping into a tanker truck from drums inside the building.
In order to prevent spills during pumping, the hoses are run into the building itself so any spills
would be contained inside. Environmental Services personnel inspect this area on a weekly
basis.
Paint Warehouse
This building has approximately 5600 square feet of floor area under roof used for storing paint.
There are no drains in this building and no storm drains around the outside of the building. This
area is inspected monthly by warehouse personnel.
Storage Yard Dock
The Storage Yard has a concrete ramp for loading materials to be taken off site for disposal. The
loading dock is sloped to contain any spills but is not currently being used. The dock is currently
not in use.
Page 3 of 17

Flex Building # 3
This building is approximately 150 feet X 100 feet. It is a concrete building used to store
emergency response equipment in the case of a natural disaster. There are 3 of these buildings
that have been built to house this type of equipment. The equipment consists of pumps,
generators, compressors, etc. that are on trailers. These buildings were constructed to meet the
NRC (Nuclear Regulatory Commission) Fukishima Response Order. The area around the
building is paved. Stormwater run-off is to a gravel yard area used to store miscellaneous
materials as described above.
DRAINAGE AREA # 2 — PLANT AREA
OUTFALL #1— WASTE WATER COLLECTION BASIN (WWCB)
Coordinate Location:
X - 1417540.20, Y - 616361.74
Discharge Structure:
Concrete Apron
Source:
Waste Water Collection Basin
Location:
Southwest of plant
Total Surface Area Drained:
215 Acres
ReceivingWater:
Catawba River
Note: Outfall 1 is also permitted under NPDES Wastewater Permit NCO024392 as Outfall 005
(Waste Water Collection Basin).
General Area Description
Outfall 001 receives drainage from the East side of the plant as well as from the McGuire Office
Complex (MOC) (Building # 7422), Office Shop Facility (Building # 7455), North
Administration Building (NAB) (Building # 7427), Vendor/Contractor Team Trailers, Dry
Canister Assembly Pad) and discharges into the Standby Nuclear Service Water Pond (SNSWP)
through corrugated metal pipe (CMP) structures.
These structures drain a surface area of 43 acres, which includes 33 acres of impervious
surface. The collected storm water runoff will in turn overflow to the Waste Water
Collection Basin (WWCB) through an underflow spillway.
Drainage from the west and south sides of the plant discharge directly into the Waste Water
Collection Basin (WWCB) through various discharge structures. The structures drain a
Total surface area of 22 acres which includes 16 acres of impervious surface.
The surface areas of the WWCB and SNSWP are (14 acres) and (35 acres) respectively.
The combined surface area of these two impoundments totals 49 acres.
Additionally, the WWCB also receives storm water runoff from approximately 500 feet of NC
Highway # 73 through a CMP on the south bank..
Page 4of17

Total surface area drained by Outfall # 001 is 215 acres as shown on the drawing located in
Appendix A. Of the 215 acres, approximately 40 % (86 acres) is impervious. Impervious
areas do not include the surface area of impoundments or graveled areas.
Potential Pollutants
Outfall 001 is also permitted as Outfall 005 by the sites NPDES Permit, NC0023492. Therefore,
refer to that permit and associated application for a listing of potential pollutants.
Warehouse 1A Loading Dock
Delivery trucks back into the Warehouse's loading/receiving dock to load and unload
various materials, including chemicals. Warehouse personnel are trained to not accept any
container that is leaking or has breached integrity. Warehouse personnel are trained forklift
operators and use safe unloading and material handling techniques. Warehouse personnel
also receive Spill Prevention Control and Countermeasure training where the SWIM
concept is taught (Secure the spill, Warn personnel in the area, Inform appropriate response
personnel, Monitor the area until responsible personnel arrive). Securing the spill involves
damming the area to prevent intrusion into storm drains or any other unplanned discharge
pathway.
Chemical Mix Building
There is an Acid Portable Tank used in this area. This storage area is on a concrete pad that is
surrounded by a concrete curb. The tank sits on a spill containment. This area drains to the
chemical mixing ponds where it may be neutralized if necessary.
Oil Storage House
Warehouse I is used to store oil, grease, hydrazine, and other chemicals. There is also a
compressed gas storage shed attached to it. Drains in the building floor are kept plugged at all
times. Materials spilled inside the building could potentially reach the outside of the building
and a storm drain if sufficient quantities were released (very unlikely). Materials being loaded
or unloaded in front of the warehouse have the potential to reach storm drains. In that event, the
WWCB would provide secondary containment. Routine inspections are conducted to ensure
there are no spilled materials during regular operation and deliveries. A housekeeping inspection
is conducted monthly.
Service Building Loading Dock
This is a minimal use area for loading and unloading equipment and materials to the machine
shop. The dock is sloped towards the Service Building with a drain down slope. The drain is
connected to our Waste Water System and drains to the Initial Hold-up Pond.
Page 5 of 17

U1 Diesel Fuel Unloading Area
U 1 Diesel fuel is received in this area by tanker truck. A curbed concrete pad surrounds the
unloading area. The area is drained through use of drain valves. These valves are normally kept
closed to assure the pad is drained in a controlled manner.
Additionally, a used oil tank is located in this area. It has a 3 foot high concrete spill
containment with drain valves to drain rain water off. The spill containment area is drained
of storm water by procedure.
Safe Shutdown Facility (SSF) D/G Diesel Fuel Unloading Pad
Diesel fuel is received in this area for the SSF Diesel. The area is a curbed concrete pad.
Should a fuel spill occur it would be contained in the curbed concrete pad area that drains to
the yard storm drainage system. Runoff is controlled with a valve, which is normally kept
closed.
Low Level Waste Storage Facility
This area consists of a concrete pad designed to contain sealed containers of Low Level
Radioactive Waste that is pending disposal. This area is monitored by Radiation Protection
personnel for radiological conditions. The storm water runoff from this area drains to the
WWCB.
Dry Cask Storage Area
This area is an open concrete pad holding large concrete canisters of spent nuclear fuel.
Drainage from this area goes to the WWCB. This area is monitored by Radiation Protection
personnel for radiological conditions.
U1 Transformer Yard
Two main step-up transformers, three plant load transformers (and associated equipment) and
one spare transformer are located in this yard. The yard is graveled and several storm drains are
located in this area. When maintenance is performed on the transformers the storm drains are
covered. Should a spill occur, the transformer oil would be contained by the WWCB. There are
oil spill booms located on the WWCB at the point where storm water is discharged to the river.
Transformer inspections are performed monthly by Environmental, Health & Safety and are
documented in the SPCC Plan. Security routinely patrols these areas and has been instructed to
immediately report all spills to the proper site personnel. Signs on the transformers inform
personnel of an oil spill source and who to call if they encounter a spill
U2 Transformer Yard
Two main step-up transformers and 3 plant load transformers (and associated equipment) are
located in this yard. The yard is graveled and several storm drains are located in this area. When
Page 6of17

maintenance is performed on the transformers the storm drains are covered. Should a spill occur,
the transformer oil would be contained by the WWCB. There are oil spill booms located on the
WWCB at the point where storm water is discharged to the river. Transformer inspections are
done monthly by Environmental Services are documented in the SPCC Plan. Operations
inspects this area twice daily on operator rounds. Security routinely patrols these areas and has
been instructed to immediately report all spills to the proper site personnel. Access to this area
is restricted. Personnel working in the area are required to notify the Work Control Center prior
to entering the area.
Dry Canister Assembly and Storage Pad
This area is used as an assembly and storage area for making the large canisters that hold Spent
Fuel on the Spent Fuel Storage Pad. Completed concrete storage canisters and metal parts for
the assembly of new canisters are stored in this area. When the canisters are assembled, redi-mix
concrete is poured into forms to make the canisters.
The area consists of a gravel yard with no storm drains. Storm water runoff is received by storm
drains on the perimeter of the pad which eventually empties into the SNSWP.
LoadinalUnloadine Area, McGuire Office Complex (Building #7422) Warehouse Dock
The warehouse dock is equipped with a concrete pad to contain spills that may occur. At the rear
of the pad is a storm drain which discharges directly to the SNSWP. The majority of the spills
that may occur in this area can be controlled before reaching the drain. Personnel have been
trained for spill prevention, control and cleanup of all oils, chemicals, and significant materials
per the SPCC plan. The MOC shipping and receiving area processes the majority of site
shipments through this area.
Warehouse/MOC Shop Material Storage Area
This area is used for storage of metal used in the fab shop and for materials being painted in
the site's Paint Booth. There are no storm drains in the immediate area, however storm water
runoff reaches storm drains on either side of the MOC and would eventually discharge to the
SNSWP. The location of the storm drains would allow sufficient time to stop a spill before it
reached a storm drain in most cases. The areas which surround this storage yard are well
grassed. The area along the fence line is rip rapped.
Personnel who store materials in this area are encouraged to minimize the amount of materials
stored. This area is inspected on a monthly basis.
MOC Alternate Data Center
This building is attached to the MOC Building and houses 2 large Diesel Generators that supply
emergency backup power to the company's Alternate Data Center located inside of the MOC
Building. There is a 10,000 gallon above ground storage tank outside of the building. The tank is
a double wall tank that meets SPCC requirements. The area around the storage tank has a rolled
Page 7of17

curb. Drainage from this area goes to the SNSWP. When fuel is being placed in the tank, the
storm drain located near the tank is covered. This is ensured by a fuel receiving procedure. The
building also houses a large battery room which is diked.
Facilities Landscape and Trailer Storage Area Near MOC
This is a graveled area where facilities stores used furniture in trailers, old equipment and
landscaping materials (mulch, gravel sand, dirt, etc.) This area is located Southeast of the MOC
Building parking lot. There are no storm drains in this area. The area is surrounded by an
earthen berm to control storm water. This area is inspected monthly by Facilities Personnel.
FLEX Building # 2
This building is approximately 150 feet X 100 feet. It is a concrete building used to store
emergency response equipment in the case of a natural disaster. There are 3 of these buildings
that have been built to house this type of equipment. The equipment consists of pumps,
generators, compressors, etc. that are on trailers. These buildings were constructed to meet the
NRC (Nuclear Regulatory Commission) Fukishima Response Order. The area around the
building is paved. Stormwater run-off is a paved parking lot and the SNSWP.
DRAINAGE AREA # 3 — LOW LEVEL INTAKE AREA
OUTFALL 002
Coordinate Location:
"X" 1417490.30, "Y" 618073.44
Discharge Structure:
24" CMP
Source:
Land Farm (West of Plant) and Area of the Low
Level Intake Pumps LLIP
Location:
West of the Plant
Total Surface Area
Drained:
Approximately 7.5 acres
Receiving Water:
Catawba River
General Area Description
Storm Water drainage in this area occurs from the concrete structure and cyclone separator for
the Lower level intake pipe (LLIP) and access roads serving the Northwest area of the plant.
Total surface area is 1 acre, which includes 0.3 acres of impervious surface. Drainage also
occurs from an inactive land farm which totals a surface area of 6.5 acres. Total surface area
drained by Outfall #002 is 7.5 acres, including 0.5 acres of impervious surfaces. The total land
area served by by Outfall #002 is approximately 7% impervious.
A letter was sent to NC Division of Water Quality on October 20, 1994 claiming this outfall
would not be sampled due to no industrial activity in this area. This claim is based on the
exemption found in 40 CFR 122.26 (a)(14). The only discharge within this area is from dam
Page 8of17

leakage (raw lake water) and sheet flow. No sampling required for this area is documented in a
letter dated 8/10/2007 from NCDENR in Mooresville. See Attachment # 2.
Potential Pollutants
Total suspended solids can come from the cyclone separator and runoff from the soils in the area.
Total residual chlorine can only be present when fire protection water is used for emergency seal
water. Low pH is indicative of groundwater in the area.
Old Landfarm (Retired)
The McGuire land farm storm water runoff is controlled by the design and operation of the
landfarm. There is a grassed berm around the perimeter of the landfarm to prevent
uncontrolled runoff down the side to the Catawba River. All the drainage is routed from
the top of the landfarm to pipes which run down to a ravine over ground to the river. The
ravine is rip rapped to minimize erosion. A series of groundwater monitoring wells are
located around the site. Groundwater is routinely monitored to assure compliance with
applicable state requirements.
Cyclone Separator / Low Level Intake Area
Cyclone separators remove silt from raw lake water prior to being used for the Low Level Pump
seal water. They continuously drain seal water into a 24" pipe which runs under the land farm.
A fire protection line which contains 1 - 3 ppm chlorine can be used as a back-up to the seal
water line in emergency situations. This would also drain through Outfall # 002.
Groundwater continuously flows into the drainage network in the area of the Low Level Intake
Pump structure. The groundwater drainage ties directly into the 24" pipe referenced above.
Low Level Intake Pump Piping Valve Pit
There are 2 valve pits near the low level intake pumps. These pits tend to collect rain water
during storm events, so a drain line was added to them. The pits only collect rain water. The
drain lines gravity feed to a storm drain that already exists in front of the low level intake pump
area. The storm drain discharges to Outfall 002.
Page 9of17

DRAINAGE AREA # 4 — GARAGE
OUTFALL 008 — MNS GARAGE
Coordinate Location:
"X"1420216.08, "Y"615806.67
Discharge Structure:
15" RCP
Source:
McGuire Garage
Location:
Southeast of Plant
Total Surface Area
Drained:
3.5 Acres
Receiving Water:
I Unnamed tributary to Catawba River
Area Description
The garage provides vehicle and equipment maintenance activities for the McGuire Site, the
Northern Region, and several companies external to Duke Energy. The building has
approximately 7500 square feet under roof. The fenced parking area consists of approximately 3
acres. Half of this area is paved and the remainder is graveled. Approximately 68% (2.4 acres)
is impervious. The North parking area is sloped towards the building. A concrete trench carries
storm water flow to a rip -rapped ditch that disperses into a wooded area. The South parking
area is sloped towards the same rip -rapped ditch.
Potential Pollutants
Diesel fuel, gasoline, oils, grease and ethylene glycol are possible pollutants because of their use
in the area. Total suspended solids may be present due to the soil and gravel in the area.
McGuire Garap-e
The garage contains numerous materials such as oils, hydraulic fluids, batteries, fuels and
degreasers. Most of the inventory is contained within the garage. Some equipment is stored in
the yard and there are several underground storage tanks and gasoline pumps on the East side of
the garage. All vehicle maintenance is performed indoors. Vehicle washing is done under roof
in the wash bay with all wastewater discharging into the McGuire Conventional Wastewater
Treatment System (WC).
Drains inside the building go to an oil/water separator, which then discharges to the McGuire
WC System. The oil from the trap is routed to chamber 4 (100 gallon oil storage compartment in
the oil/water separator). A leak detection alarm from this system goes to an off -site Security
Company and monitored 24 hours / day. In the event of a spill during fuel loading/unloading,
diesel fuel, gasoline, or oil would flow into the concrete trench, which discharges to Outfall 8. A
drain valve is located at the west end of the trench prior to it discharging to Outfall 008. When
fuel deliveries are made, the valve is closed to contain any spilled fuels that might occur during
loading or unloading activities. There is approximately 1500 square feet of above ground
concrete trench for spill containment. Spill clean-up materials are kept on hand at all times.
Page 10 of 17

Garage personnel perform routine reviews of the computerized leak detection system reports to
verify underground storage tank system integrity.
A steep dirt embankment to the north of the Garage parking area was graded and seeded to
control erosion and sedimentation of the area.
DRAINAGE AREA # 5 — SWITCHYARD
OUTFALLS
Coordinate Location:
6: X 141392.33
Y 613704.50
14: X 1420322.54
Y 613516.89
24: X 1420200.11
Y 613691.88
25: X 1420179.90
Y 613779.22
26: X 1420019.33
Y 613722.3
27: X 1419829.60
Y 613652.93
28: X 1419632.47
Y 613625.11
37: X 1419532.37
1 Y 614086.38
Discharge Structure:
Concrete Spillway
and Corrugated metal pipe
Source:
230KV Switching
Station
Location:
South of Plant
Total Surface Area
9.4 Acres
Drained:
Receiving Water:
I Unnamed Tributaries to the Catawba River
General Area Description
Drainage from 230 kV switchyard and access roads with a total area of 9.4 acres which includes
2.4 acres of impervious surfaces. The switchyard also contains an operating building which
contains batteries and electrical equipment. Two large underground Oil Water Separator Tanks
(one 20,000 gallon tank and one 30,000 gallon tank) have been installed at the switchyard to
contain any oil that might result from a transformer oil spill in the switchyard. Stormwater
Outfalls #14 and #24 have been re-routed to drain to these oil water separators. A drawing
showing the configuration of the oil water separators is provided in Attachment # 3.
Potential Pollutants
Oil, grease and TSS are possible pollutants from the transformers in the area. Total Suspended
Solids come from the gravel and soil in the area. All of the transformers in the switchyard have
been retrofitted to remove PCBs.
230 KV McGuire Switchyard
Interior floor drains and condensate from the equipment closed cooling system drain into the
operating building sump that is pumped out through Outfall 6. Batteries containing acid are kept
Page 11 of 17

in the operating building inside a room without a floor drain. The switchyard contains 69 oil
filled transformers. None contain PCBs.
OUTFALLS 7,9,10,11,12,13,23 & 38.
Coordinate Location:
7: "X"1420363.15, "Y"613543.07
9: "X"142089.06, "Y"613917.90
10: "X"1420806.48, "Y"613696.25
11: "X"1420669.66, "Y"613621.64
12: "X"1420611.50, "Y"613642.65
13: "X"1420420.97, "Y"613595.64
23: "X"1421025.27, "Y"613907.24
38: "X" 1420322.54, "Y" 613516.89
Discharge Structure:
Concrete Spillways and Corrugated Metal
Pipe
Source:
525kV Switching Station
Location:
South of Plant
Total Surface Area Drained:
27 Acres
Receiving Water:
I Unnamed Tributaries to the Catawba River
Area Description
Drainage from 525 kV switchyard and access roads with a total surface area of 27 acres, which
includes approximately 33% (9 acres) of impervious surfaces.
Outfalls (12, 13, & 25) were added after the original submittal of the permit application
identifying all of the storm water discharges. A letter was sent to the State to ask for
substantially identical status for the additional drains. This request was granted in a letter dated
8/10/2007. See Attachment # 2. As indicted above, outfalls 14 and 24 have been routed to
underground oil water separators. A new outfall, 38 was created during the re-routing of the
stormwater pipes for outfalls 14 and 24. It carries stormwater from the interior of the
switchyard. Substantially identical outfall status with outfall 006 was requested and granted in
2013. The approval letter from NCDENR in Mooresville dated 8/29/2013 is shown in
Attachment # 2.
Potential Pollutants
Transformer Oil and grease are possible pollutants from the transformers in the area. Total
suspended solids may be released from the gravel and soil in the area.
535 KV Switchyard
Oil from oil -cooled transformers (non -PCB), represent the only significant materials in the
drainage area of these outfalls. The switchyard is a graveled area that has a system of yard
drains. Transformer inspections are done by Power Delivery personnel as part of their routine
work activities in the switchyard. If problems exist they are documented for corrective action.
Page 12 of 17

OTHER DRAINAGE AREAS
Old Landfill (Inactive)
This landfill was permanently closed per the requirements of the solid waste permit in 1994. The
landfill storm water runoff is controlled with several silt fences. Runoff is directed toward the
landfill sedimentation pond. Closed trenches are covered with at least two feet of final cover.
Grass is maintained to prevent erosion and is bush -hogged annually to prevent development of
sinkholes. The landfill is fenced and is routinely patrolled by Security, who will immediately
report any unusual activity.
Firing RanEe
Security uses the firing range located on the South side of Hwy. 73 for qualification required by
the Nuclear Regulatory Commission. Silt fencing, mulch and grass is permanently maintained to
prevent any suspended fragments from leaving the range. The range uses lead ammunition. A
bullet collection system is used to collect the lead bullets in the new firing range. The lead from
the bullets is recycled.
Note: this area was not identified in the initial storm water permit application as the activity was
considered separate from the plant's industrial activities. Per 40 CFR 122.26 (b)(14), these areas
can be excluded "as long as drainage from the excluded area is not mixed with storm water
drained from the above described areas".
Landfarm (InActive)
A 6 acre landfarm is located beyond the switchyard on the South side of Hwy 73. Currently this
area is not being used. Grass buffers are maintained around the perimeter of the land farm and all
runoff is sheet flow from the area. The area has several monitor wells and is inspected quarterly
by Environmental Services.
Landfill (Active)
The landfill storm water runoff is directed to three landfill sediment traps. These traps receive
storm water from the exterior of the landfill which contains no significant materials. All storm
water that flows into the interior of the landfill is collected in a leachate collection pond which is
pumped to the MNS WC System's initial holdup pond (permitted by NPDES NC0024392).
Leachate is controlled by (6) six inches of compacted daily cover or a temporary water proof
tarpaulin during rainy periods. The area is routinely patrolled by Security and inspections are
done weekly by Duke Energy Environmental Services personnel who operate the landfill.
Page 13of17

Island Industrial Laboratory
An industrial laboratory located on the McGuire Site was not identified in the initial storm water
permit because the storm water drained from this area (an island separated from the site) is not
mixed with the storm water drained from the site's industrial activities.
Transformers
Oil cooled transformers are located all around the McGuire site. A few transformers have the
potential to spill to the lake or river. Security routinely patrols these areas and has been
instructed to immediately report all spills to the proper site personnel. Signs on the transformers
inform personnel of an oil spill source and who to call if they encounter a spill. Transformer
inspections are done quarterly or monthly by Environmental Services and are documented in the
SPCC Plan.
Page 14 of 17

ATTACHEMENT # 1
McGUIRE STORMWATER DRAWING
Page 15 of 17

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ATTACHMENT # 2
SUBSTANTIALLY IDENTICAL OUTFALL STATUS
DOCUMENTATION
Page 16 of 17

August 10, 2007
Lee N. Williams
Environmental, Health & Safety Manager
Duke Energy
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, NC 28078
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins Director
Division of Water Quality
E-_t (' I o v,. f i,
F:>s�1l� N
Subject: Representative Stormwater Outfall Request
Duke Energy — McGuire Nuclear Station
NCS000020
Mecklenburg County
Dear Mr. Williams:
The Division of Water Quality received your request for changes in your monitoring obligations at Duke
Energy - McGuire Nuclear Station on July 26, 2007, and a current site plan with drainage area
descriptions on August 9, 2007. Based on our understanding of your representations of current site
drainage conditions as presented in your letter and site plan, we are granting the following revision to
your monitoring obligations under NCS000020. Please maintain a copy of this letter on file at the
facility.
1. No sampling is required at Outfall 001, which is also permitted under Wastewater Permit
NCO024392 as Outfall 005.
2. You reported that Outfalls 004 and 006 are representative of Outfalls 029 - 032, and 037.
(DWQ approved your representative outfall request that 004 and 006 were representative of
003, 005, 007, and 009 — 028 previously in a letter dated August 28,1998.) After review of
your letter and site plan, Duke Energy may conduct the required analytical sampling on
Outfalls 004 and 006 as representative for Outfalls 003, 005, 007, 009 — 032, and 037 and may
discontinue analytical monitoring of Outfalls 003, 005, 007, 009 — 032, and 037. Please note
that Outfalls 003, 005, 007, 009 — 032, and 037 must still be included in the twice -yearly
qualitative monitoring event.
3. At Outfall 008, analytical and qualitative monitoring will be continued.
4. Since there is no sormwater runoff associated with an industrial activity as reported in your
request at Outfalls 002 and 033 — 036, no sampling is required
If you change the industrial activity in the drainage areas or significantly change the operation of your
business from its current status, you must notify the Division of Water Quality.
Please contact me with any questions or concerns at [phone] ext. 360.
ld
North Carolina Division of Water Quality 1617 Mail service Cent" Raleigh, NC 27699-1617 Phone [phone] Customer service
Internet: mnm.nowaterggalitv.ore Location: 512 N. Salisbury St Raleigh, NC 27604 Fax [phone]
An Equal OpporlwhylAffamalive Acton Employer— 50% Regpdedll0% Post Consumer Paper

Lee N. Williams
Duke Energy—NCS000020
August 10, 2007
Sincerely,
Robert Patterson, PE
Environmental Engineer
cc: Mooresville Regional Office
Central Files
Stormwater Permitting Unit Files

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
Land Quality Section
Tracy E. Davis, PE, CPM
Director
August 29, 2013
U
Mr. Steven D. Capps, Site Vice President
Duke Energy Carolinas, LLC
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, North Carolina 28078
Pat McCrory, Governor
John E. Skvarla,111, Secretary
SEP 4 2013
MCGUIRE NUCLEAR STATION
VICE PRESIDENT'S OFFICE
Subject: NPDES Stormwater Permit
Stormwater Permit Certificate of Coverage No. NCS000020
Representative Outfall Status Request
McGuire Nuclear Station
Mecklenburg County
Dear Mr. Capps:
The Mooresville Regional Office staff have reviewed your request for a determination that stormwater discharge
outfall (SDO) SWO06 be granted representative outfall status for stormwater outfall SW038. Based on the
information provided we are approving this request. In accordance with 40 CFR § 122.21(g) (7), you are
authorized to sample outfall number SWO06 as a representative outfall. This approval is effective with the next
sampling event. We also want to remind you that the permit still requires Qualitative Monitoring be performed
at all SDOs, regardless of representative status.
Please remember that any actions you initiate in response to benchmark exceedances as directed in the tiered
response provisions of your permit must address all drainage areas represented by SDO SWO06 where
appropriate.
Please append this letter to your Stormwater Pollution Prevention Plan (SPPP) or permit to document that
representative outfall status has been approved. If changes in drainage areas, structures, processes, storage
practices, or other activities occur that significantly alter the basis of this approval, representative outfall status
Mooresville Regional Office
610 East Center Avenue, Suite 301, Mooresville, North Carolina 28115
Telephone: [phone] / FAX: [phone] Internet; hb://www.dir.enr.state.nc.ustmesAandQualitysection.html
An Equal Opportunity / Affirmative Action Employer — 50% Recycled / 1096 Post Consumer Paper

NPDES Stormwater Permit
Duke Energy Carolinas, LLC
McGuire Nuclear Station
August 29, 2013
Page 2 of 2
may no longer be valid. You should either resume sampling at all SDOs, or reapply to this office for
representative outfall status based on updated information. If you have any questions or comments concerning
this letter, please contact our Office at [phone].
Sincerely,
Zahid Saeed Khan,
Regional Supervisor
Mooresville Regional Office
cc: Stormwater Permitting File NCS000020

ATTACHMENT # 3
SWITCHYARD OIL WATER SEPARATOR
DRAWING
Page 17 of 17

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Stormwater Sampling Summary
Outfall No.
Date Sample Collected
p
50050
Total Flow 2
3
00530 TSS
39516
PCB'
50061
Oil and Grease
00400
pH
mo/dd/ r
MG
mgIl
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m
S.U.
SWO04
4/16/2011
0.090
ND (6.7)
ND 260 u )
5.6
6.56
SWO04
10/11/2011
0.050
370.0
ND 260 u
ND 4.5
9.9
SWO04
1 4/26/2012
0.010
ND
ND
ND
6.32
SWO04
11/13/2012
0.010
ND
ND
ND
7.7
SWO04
5/5/2013
0.140
ND
ND
ND
6.7
SWO04
10/7/2013
0.070
ND
ND
ND
7.24
SWO04
5/15/2014
0.120
ND
ND
ND
7.0
SWO04
ND
SWO04
12/6/2014
0.008
ND
ND
ND
7.1
SWO04
3/5/2015
0.035
11.0
ND
ND
6.75
SWO06
4/16/2011
0.060
ND 10)
ND 260 u )
ND 4.5)
6.8
SWO06
10/11/2011
0.030
ND 10
ND 260 u )
ND 4.5)
8.8
SWO06
4/26/2012
0.010
17.0
ND
ND
6.18
SWO06
11/13/2012
0.010
ND
ND
ND
8.5
SWO06
5/5/2013
0.090
ND
ND
ND
6.5
SWO06
1 10/7/2013
0.040
5.0
ND
ND
6.9
SWO06
5/15/2014
0.080
ND
ND
ND
6.9
SWO06
SWO06
12/6/2014
0.005
ND
ND
ND
6.5
SWO06
3/5/2015
0.131
ND
ND
6.79
Outfall No.
Date Sample Collected
50050
Total Flow
00530
TSS
50061
TPH
00400
pH
New Motor Oil
Usage
mo/dd/ r
MG
mgti
mgtL
unit
al/mo
SWO08
4/16/2011
0.130
33.0
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6.8
106.5
SWO08
10/11/2011
0.070
6.0
ND <5
6.8
368
SWO08
4/26/2012
0.020
27.0
ND
6.30
126
SWO08
11/13/2012
0.020
34.0
ND
8.20
411
SWO08
5/5/2013
0.190
5.0
ND
6.48
488
SWO08
10/7/2013
0.090
5.0
ND
7.02
92.4
SWO08
5/15/2014
0.170
ND
ND
7.0
98
SWO08
ND
114
SWO08
12/6/2014
0.011
11
ND
7.1
114
SWO08
3/5/2015
0.049
24
ND
7.62
114
Note 1
Please note that samples were originally pulled on 11/17/2014 but the PCB samples for Outfall 006 were misplaced by the lab.
The samples taken on 11/17/2014 were analyzed and the results are shown as the 11/17/2014 sample results.
The decision was made to re -sample all outfalls and those samples are shown as the 12/06/14 samples.
The 12/06/14 samples include the missing PCB samples for Outfall 006.
Note 2
Exceedance of TSS Bench Mark @ Outfall 006
Corrective action was taken and documented in the SWPPP as required in the permit
Note 2

McGuire Stormwater Visual Monitoring Summary Report
Outfall
Number
I Inspector
Ins Inspection Date
I P
I Color
I Odor
Clari
I Clarity
I Solids
I Foam
Oil Sheen
I I
Outfall Staining
g
l Other
1
John C. Williamson
6/20/2011
clear, (5 gpm)
None
1
1
No
No
None
1
John C. Williamson
11/15/2011
clear, (5 gpm)
None
1
1
No
No
None
No discharge from this outfall. WWCB pumped down for chemical
1
John C. Williamson
6/21/2012
No discharge
None
1
1
No
No
None
treatment of SNSWP
No discharge from this outfall. WWCB pumped down for chemical
1
John C. Williamson
11/20/2012
No discharge
None
1
1
No
No
None
treatment of SNSWP
1
John C. Williamson
5/22/2013
Clear about 100gpm flow
None
1
1
No
No
None
Clear Approximately 50
1
John C. Williamson
11/18/2013
gpm flow
None
1
1
No
No
None
1
John C. Williamson
5/5/2014
Clear about 100 gpm flow
None
1
1
No
No
None
2
John C. Williamson
6/20/2011
Clear Discharge 5 gpm
None
1
1
No
No
None
2
John C. Williamson
11/15/2011
Clear Discharge 5 gpm
None
1
1
No
No
None
2
John C. Williamson
6/21/2012
Clear Discharge 50 gpm
None
1
1
No
No
None
2
John C. Williamson
11/20/2012
Clear Discharge 50 gpm
None
1
1
No
No
None
2
John C. Williamson
5/22/2013
Clear Discharge 50 gpm
None
1
1
No
No
None
2
John C. Williamson
11/18/2013
Clear Discharge 50 gpm
None
1
1
No
No
None
2
John C. Williamson
5/5/2014
Clear Discharge 50 gpm
None
1
1
No
No
None
3
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
3
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
3
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
3
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
3
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
3
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
3
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
4
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
4
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
4
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
4
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
4
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
4
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
4
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
5
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
5
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
5
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
5
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
5
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
5
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
5
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
6
John C. Williamson
6/20/2011
Clear Discharge 2 gpm
None
1
1
No
No
None
Page 1 of 7

McGuire Stormwater Visual Monitoring Summary Report
outfall
Number
Inspector
Inspection Date
Color
Odor
Clarity
Solids
Foam
Oil Sheen
Outfall Staining
Clear Discharge,
6
John C. Williamson
11/15/2011
approximately 2 gpm
None
1
1
No
No
None
Clear Discharge,
6
John C. Williamson
6/21/2012
approximately 2 gpm
None
1
1
No
No
None
Clear Discharge,
6
John C. Williamson
11/20/2012
approximately 2 gpm
None
1
1
No
No
None
Clear Discharge,
6
John C. Williamson
5/22/2013
approximately 2 gpm
None
1
1
No
No
None
Clear Discharge,
6
John C. Williamson
11/18/2013
approximately 2 gpm
None
1
1
No
No
None
Clear Discharge,
6
John C. Williamson
5/5/2014
approximately 2 gpm
None
1
1
No
No
None
7
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
7
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
7
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
7
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
7
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
7
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
7
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
8
John C. Williamson
6/20/2011
No discharge
None
1
1
No
No
None
8
John C. Williamson
11/15/2011
No discharge
None
1
1
No
No
None
8
John C. Williamson
6/21/2012
No discharge
None
1
1
No
No
None
8
John C. Williamson
11/20/2012
No discharge
None
1
1
No
No
None
8
John C. Williamson
5/22/2013
No discharge
None
1
1
No
No
None
8
John C. Williamson
11/18/2013
No discharge
None
1
1
No
No
None
8
John C. Williamson
5/5/2014
No discharge
None
1
1
No
No
None
9
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
9
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
9
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
9
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
9
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
9
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
9
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
10
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
10
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
10
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
10
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
10
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
10
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
10
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
11
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
Page 2
of 7
Other

McGuire Stormwater Visual Monitoring Summary Report
OutfA
Number
inspector
Inspection Date
Color
Odor
Clarity
Solids
foam
Oil Sheen
Outfall Staining
Other
11
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
11
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
11
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
11
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
11
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
11
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
12
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
12
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
12
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
12
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
12
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
12
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
12
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
13
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
13
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
13
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
13
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
13
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
13
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
13
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
14
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
14
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
This outfall has been re-routed to the Oil Water Separator as part of
14
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
the swithchyards SPCC upgrade.
This outfall has been re-routed to the Oil Water Separator as part of
14
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
the swithchyards SPCC upgrade.
This outfall has been re-routed to the Oil Water Separator as part of
14
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
the swithchyards SPCC upgrade.
This outfall has been re-routed to the Oil Water Separator as part of
14
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
the swithchyards SPCC upgrade.
This outfall has been re-routed to the Oil Water Separator as part of
14
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
the swithchyards SPCC upgrade.
15
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
15
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
15
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
15
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
15
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
15
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
15
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
Some silt buildup at this outfall. Facilities WR written to repair.
16
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
16
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
16
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
16
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
Page 3 of 7

McGuire Stormwater Visual Monitoring Summary Report
Outfall
Number
17upector
Inspection Date
Color
Odor
Clarity
Solids
Foam
Oil Sheen
Outfall Staining Other
16
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
16
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
16
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
17
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
17
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
17
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
17
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
17
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
17
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
17
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
18
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
18
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
18 John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
18 John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
18 John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
18 John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
18 John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
19 John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
19 John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
19 John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
19 John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
19 John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
19 John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
19 John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
20 John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
20 John C. Williamson
11/15/2031
No Discharge
None
1
1
No
No
None
20 John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
20 John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
20 John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
20 John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
20 John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
21 John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
21 John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
21 John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
21 John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
21 John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
21 John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
21 John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
22 John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
22 John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
22 John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
22 John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
22 John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
22 John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
Page 4 of 7

McGuire Stormwater Visual Monitoring Summary Report
outfall
Number
Inspector
Inspection Date
Color
Odor
I Clarity
Solids
foam
Oil Sheen
Outfall Staining
Other
22
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
23
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
23
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
23
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
23
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
23
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
23
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
23
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
24
John C. Williamson
6/20/2011
Slight discharge 1 gpm
None
1
1
No
No
None
24
John C. Williamson
11/15/2011
Slight discharge 1 gpm
None
1
1
No
No
None
This outfall has be re-routed to the new Oil Water Separators put in
24
John C. Williamson
6/21/2012
No discharge
None
1
1
No
No
None
at the switchyard as part of their SPCC upgrade.
This outfall has be re-routed to the new Oil Water Separators put in
24
John C. Williamson
11/20/2012
No discharge
None
1
1
No
No
None
at the switchyard as part of their SPCC upgrade.
This outfall has be re-routed to the new Oil Water Separators put in
24
John C. Williamson
5/22/2013
No discharge
None
1
1
No
No
None
at the switchyard as part of their SPCC upgrade.
This outfall has be re-routed to the new Oil Water Separators put in
24
John C. Williamson
11/18/2013
No discharge
None
1
1
No
No
None
at the switchyard as part of their SPCC upgrade.
This outfall has be re-routed to the new Oil Water Separators put in
24
John C. Williamson
5/5/2014
No discharge
None
1
1
No
No
None
at the switchyard as part of their SPCC upgrade.
25
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
25
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
25
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
25
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
25
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
25
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
25
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
26
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
26
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
26
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
26
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
26
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
26
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
26
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
27
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
27
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
27
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
27
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
27
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
27
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
27
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
28
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
28
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
28
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
28
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
Page 5 of 7

McGuire Stormwater Visual Monitoring Summary Report
Outfall
Number Inspector Inspection Date Color Odor I Clarity I Solids I Foam I Oil Sheen I Outfall Staining Other
28 John C. Williamson 5/22/2013 No Discharge None 1 1 No No None
28
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
28
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
29
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
29
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
29
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
29
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
29
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
29
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
29
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
30
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
30
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
30
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
30
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
30
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
30
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
30
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
31
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
31
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
31
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
31
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
31
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
31
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
31
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
32
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
32
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
32
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
32
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
32
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
32
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
32
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
33
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
33
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
33
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
33
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
33
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
33
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
33
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
34
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
34
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
34
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
34
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
34
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
34
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
34
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
Page 6 of 7

McGuire Stormwater Visual Monitoring Summary Report
Outfall
Number
i 6spector
Inspection Date
Color
Odor
Clarity
Solids
Foam
Oil Sheen
Outfall Staining
35
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
35
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
35
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
35
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
35
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
35
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
35
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
36
John C. Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
36
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
36
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
36
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
36
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
36
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
36
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
37
John Williamson
6/20/2011
No Discharge
None
1
1
No
No
None
37
John C. Williamson
11/15/2011
No Discharge
None
1
1
No
No
None
37
John C. Williamson
6/21/2012
No Discharge
None
1
1
No
No
None
37
John C. Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
37
John C. Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
37
John C. Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
37
John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
38 John Williamson
11/20/2012
No Discharge
None
1
1
No
No
None
38 John Williamson
5/22/2013
No Discharge
None
1
1
No
No
None
38 John Williamson
11/18/2013
No Discharge
None
1
1
No
No
None
38 John C. Williamson
5/5/2014
No Discharge
None
1
1
No
No
None
Other
New outfall created by re-routing of Outfalls 14 and 24 to oil water
separator at switchyard
New outfall created by re-routing of Outfalls 14 and 24 to oil water
separator at switchyard
New outfall created by re-routing of Outfalls 14 and 24 to oil water
separator at switchyard
New outfall created by re-routing of Outfalls 14 and 24 to oil water
separator at switchyard
Page 7 of 7

Best Management Practices Summary
Structural Best Management Practices
Wherever possible hazardous materials, oils and fuels are stored inside of buildings or
under cover.
Bulk Storage Vessels that are exposed to the elements have secondary containment or
have double wall spill containment. All of the containments are managed under the sites
SPCC Plan and are inspected at least monthly and after any rain event where greater than
1/2 inch of rain is received.
Bulk fuel and chemical loading /unloading is performed in areas with secondary
containment and controlled by procedures.
Warehouse loading docks have spill control measures in place such as concrete trenches
for spill control and are attended at all times during deliveries.
Transformers containing mineral oil in the plant transformer yards are contained in areas
with curbs or berms. The transformer yards have oil collection pits and a drainage
system that is designed to collect transformer oil from large spills. The storm drains in
the transformer yards drain to the WWCB (Waste Water Collection Basin). The WWCB
is not considered waters of the state and provide secondary containment.
The discharge canal from the plant has two spill control booms that would prevent or
restrict oil from a spill from migrating to Lake Norman.
The storm drainage system for the power block of the plant drain to two large man made
ponds that are not waters of the state. This would allow for spill cleanup on the ponds
prior to the oil getting to the Catawba River.
The discharge from the WWCB (Waste Water Collection Basin) has an underflow
discharge arrangement where if oil or other pollutants that float on the top of the water
were to be present in the basin would allow for cleanup of the oil (or other pollutants)
prior to it being discharged to the Catawba River.
An oil spill boom is in place on the WWCB prior to reaching the discharge point to the
Catawba River.

Bulk oils, fuels and hazardous materials being stored inside of the power block either
have spill containments or in the event of a spill would discharge to the turbine building
sumps. The turbine building sump discharges to the initial holdup pond where spill
cleanup could be performed.
The Oil Storage House inside the protected area of the plant contains bulk storage
containers (portable tanks and drums) of petroleum products and chemicals. This
building has a closed floor drain inside the building to control spills that may occur.
The DMSB (Discarded Materials Storage Building) is the site hazardous waste storage
building and is located outside of the protected area. The building contains drums and
other containers of hazardous waste, non -hazardous materials, universal waste, batteries,
etc. and is protected by a sunken floor with a closed drain system.
The Paint Warehouse outside of the protected area houses paints, thinners and other
chemicals of a flammable or combustible nature. The building has no drains that
discharge to the exterior of the building.
The McGuire Garage has a large concrete fuel truck spill containment area that provides
containment for 2 fuel trunks and has room for 3 additional vehicles. The containment
structure has a valve that remains closed except for when rainwater is drained from it
after it is inspected.
The fueling area at the McGuire Garage has a spill trench to capture any spilled fuels.
When fuel deliveries are received a valve at the end of the trench is closed to contain any
spills.
Erosion and sediment control measures Best Management Practices are employed as
needed to prevent erosion during activities that involve earth disturbance. Measures
include the use of silt fencing, catch basin protection, temporary spill containments for
equipment, etc.
Spill containments are required for portable equipment used onsite per the sites SPCC
Plan.
Non -Structural Best Management Practices (BMPs)
Personnel Training
Personnel are trained and qualified to do their jobs through the Employee Training and
Qualification System (ETQS) or other systematic approaches to training. CBTs and Read
Packages are utilized for specific training needs.
Personnel who perform work associated with hazardous waste activities are trained per
40CFR262 requirements.

Contractors and new employees on site receive General Employee Training, which
includes: orientation, administrative controls, quality assurance, radiological health,
safety, fire protection, emergency health, safety, fire protection, emergency plan, site
security, fitness for duty, and site specific environmental awareness. This training is
required annually for all badged personnel.
Storm water Pollution Prevention Awareness is enhanced by newsletters, posters,
Environmental Services Homepage, and other site publications.
Other specific environmental training requirements are listed in the Duke Energy
Environmental Compliance Manual. Training records are maintained primarily in
electronic format in the Nuclear Learning Management System or My Training
databases.
Site Security
MNS Site Security performs routine patrols of all areas of the site, including the landfill
areas across Highway 73.. On the routine patrols, Security force members watch for
unauthorized personnel as well as abnormal/unusual events. Security personnel are to
report conditions observed on their patrols that they feel have the potential to cause an
environmental incident.
Site Housekeeping
Nuclear System Directive 104 establishes comprehensive housekeeping requirements for
the site which includes periodic housekeeping inspections.
Preventive Maintenance
MNS utilizes a computer program system called Consolidated Asset Suite to initiate,
issue, track and trend preventative maintenance (PM) work items. PM's may involve oil
changes, lubrication, inspections, and/or complete refurbishment of various valves,
pumps, or other system equipment. The program protects against system/equipment
failures which could result in a release or spill. System/equipment repairs are also
covered under the Nuclear Asset Suite system.
Site Services uses the Dream Work Request Program to track preventative and corrective
work dealing with facilities (Buildings and Grounds) issues.
Action Tracking is a computerized corrective action program used at all 6 nuclear sites.
Through this process problems are identified and corrective actions initiated. Each site
group is required to trend problems identified through CR (Condition Reports) to
continuously improve processes. CRs associated with storm water activities are assigned
to various site groups for evaluation and correction.

Inspection Schedules
Chemistry personnel perform daily oil surveillance on the WWCB and the discharge
canal area. The SNSWP is inspected on a weekly basis and documentation for all
inspections (including daily) are listed in the ORC log, which is located in Chemistry.
Oil surveillance/unusual events are documented on Operations "Rounds" sheets daily.
these are kept electronically in Fusion.
Transformers are inspected monthly by Environmental Services as part of their monthly
Stormwater Inspections. In addition, Quarterly inspections are conducted as part of the
SPCC program on all remote transformers except those at the switchyard. The
transformers in the switchyard are inspected by Power Delivery personnel as part of their
routine work activities in the switchyard and the Switchyard SPCC Plan.
UST inventories and leak rate detection inspections are performed daily by a
computerized leak detection system (Veterroot), on Garage fuel tanks and monitored by
the Garage Personnel. Leak rate inspection data is kept at the garage office in a fire proof
safe.
The USTs inside the protected area are checked once a shift by operations personnel.
Hazardous Waste Storage areas are inspected weekly by Environmental Services
personnel. Inspection records are maintained in the Environmental Services office area.
The active landfill is inspected monthly by Site Environmental Services personnel and
documentation is located in the EHS office area. The closed landfill is inspected on a
quarterly basis by McGuire Environmental Services Documentation for this inspection is
located in the EHS office area.
Bulk storage tanks are inspected at least monthly by Environmental Services as part of
the SPCC and Stormwater inspections. These inspections are documented and
maintained in the EHS office area.
Spill and Emergency Response
The on -duty Operations Shift Manager (OSM) (on -site 24 hours a day, 7 days a week)
acts as Emergency Coordinator. The OSM is responsible for contacting the appropriate
Emergency Response personnel, SPCC coordinator, Hazmat Team, and becomes the
Incident Commander until the Hazmat Team arrives. The OSM will coordinate activities
and/or cleanup until appropriate personnel arrive on the scene
The on -site Fire Brigade team is trained in spill response. Spill cleanup materials have
been placed in employee parking areas and other outside areas where a spill could occur.

Environmental Services personnel are on call 24 hours a day, 7 days a week, in order to
aid in spill response and other emergencies.
The site also has an Emergency Response Organization (ERO) consisting of personnel
from all areas of the Plant. The ERO is trained to direct and respond to emergencies that
could occur at a Nuclear Power Plant.
Documentation of all spills (since 1991) are kept in the Action Tracking Database.
Environmental Services maintains a spreadsheet of significant spills and leaks that have
occurred on site since 1988. A copy of this spreadsheet is available by contacting
Environmental Services.
The site's Nuclear Chemical Control Program features a chemical labeling system used
for all chemicals brought on site. Before being brought on site, chemicals must be
approved through a chemical justification and evaluation process. Chemical Fact Sheets
and SDS Sheets are available through a-Trac. for all employees. Storage requirements,
container and product disposal information, and health and safety information about
products are available through the eTrac Program. Spill clean-up information is also
included. Further guidance is available in Nuclear Procedure AD-EN-ALL-0045 -
Nuclear Chemical Control Program.
Site Drum Control Program
This program is directed by site Environmental Work Practice 2.12. It has established a
mechanism to control both empty and full drums >8 gallons in capacity, to reduce the risk
of costly "mystery drums" and reduce storm water pollution from rainwater improperly
entering drums.
Erosion and Sedimentation Control
Environmental Services evaluates all land disturbing activities prior to the start of the
project and ensures an appropriate erosion control plan is developed, if needed.
Environmental Services also ensures that BMP's are used on all land disturbing activities.
The McGuire Site Services, Facilities Group has overall land management
responsibilities for the site.
Environmental Work Practice 3.1 provides guidance to the site on Erosion Control
requirements.
The majority of storm water catch basins in high use areas are posted with a sign that
directs personnel to call a responsible person prior to discharging anything into the catch
basin.
All land disturbing activities are carried out in accordance with the Corporate
Environmental Manual and EAT 3.1.

Trenching/Digging
Before any trenching and/or motorized digging is performed, all underground utilities,
piping, tanks, valves, are required to be located and appropriately marked. This helps
prevent any leaks caused by damaged system components, (ie. piping, tanks, valves, etc.),
while digging.
Application of Herbicides, Pesticides and Fertilizers
Herbicides
In the Security Isolation Zone at the Protected Area fence, Round Up is applied with a
sprayer two to three times per year, per manufacturer's instructions for vegetation control.
Round Up is also applied approximately once per year using a hand or automatic
broadcaster to the area below and beside the lower gravel parking lot, around the
perimeter of the Owner Controlled fence, at the shooting range, at the ball field, and
around the landfarm fences.
Rodeo is applied with a sprayer (per manufacturer's instructions) to the grounds around
the Final Holdup Pond and the West slope of the Standby Nuclear Service Water Pond
and inside the Switchyard approximately once per year.
Approved pesticides are applied with a machine spreader (for granular varieties) or hand
sprayer (for liquid varieties) to the landscaped areas outside of the Protected Area fence.
Round Up is applied inside the protected area once to two times a year.
Approved herbicides are applied over the entire site, including the storage yards on an as
needed basis. All herbicides are applied in accordance with their label and under the
direction of a licensed pesticide applicator.
Insecticides
Approved insecticides are applied with a machine spreader to the landscaped areas
outside of the Protected Area fence on an as needed basis.
Soil Conditioners
Lime is applied around the intake structure every other year, and once per year to
landscaped areas around the facility.
Fertilizers
10-10-10 is applied around the Isolation Zone approximately once every two years.
17-17-17 and pellet nitrogen is applied once per year to the West slope of the Standby
Nuclear Service Water Pond, the grounds around the Final Holdup Pond, the area below

and beside lower gravel parking lot, the area around the Owner Controlled fence, firing
range, ball field, landfarm, and landfill areas.
14-28-14, 12-6-6, and 10-10-10 are applied to landscaped areas outside of the Protected
Area fence on an as needed basis.
Fertilizers and other soil conditioners (lime) are applied on the landscaped areas around the site
on an as needed basis. Fertilizer and lime are also applied on closed landfill trenches to enhance
grass growth.

Summary of Significant Stormwater Changes
Addition of 2 oil water separators at the McGuire Switchyard for SPCC compliance. This
required the re-routing of stormwater outfalls 14 and 24 to the oil water separators and the
creation of Stormwater Outfall 38. The oil water separators are designed to capture transformer
oil from the interior of the switchyard should a spill occur.
The addition of 3 FLEX Buildings that house emergency response equipment to safety shut
down the plant in the event of a natural disaster. The stormwater discharges from the buildings
is not significant however the construction of the buildings required the site to obtain a
construction stormwater permit.
No changes in work processes, material handling processes, storage practices, and raw materials
used by the facility have occurred since the last permit period.

Michael F. Easley, Governor
William G. Ross k, Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins Director
Division of Water Quality
August 10, 2007 Do= MWO
!
Lee N. Williams
Environmental, Health & Safety Manager
Duke Energy
McGuire Nuclear Station
12700 Hagers Ferry Road
Huntersville, NC 28078
Subject: Representative Stormwater Outfall Request
Duke Energy — McGuire Nuclear Station
NCS000020
Mecklenburg County
Dear Mr. Williams:
The Division of Water Quality received your request for changes in your monitoring obligations at Duke
Energy - McGuire Nuclear Station on July 26, 2007, and a current site plan with drainage area
descriptions on August 9, 2007. Based on our understanding of your representations of current site
drainage conditions as presented in your letter and site plan, we are granting the following revision to
your monitoring obligations under NCS000020. Please maintain a copy of this letter on file at the
facility.
1. No sampling is required at Outfall 001, which is also permitted under Wastewater Permit
NCO024392 as Outfall 005.
2. You reported that Outfalls 004 and 006 are representative of Outfalls 029 - 032, and 037.
(DWQ approved your representative outfall request that 004 and 006 were representative of
003, 005, 007, and 009 — 028 previously in a letter dated August 28, 1998.) After review of
your letter and site plan, Duke Energy may conduct the required analytical sampling on
Outfalls 004 and 006 as representative for Outfalls 003, 005, 007, 009 — 032, and 037 and may
discontinue analytical monitoring of Outfalls 003, 005, 007, 009 — 032, and 037. Please note
that Outfalls 003, 005, 007, 009 — 032, and 037 must still be included in the twice -yearly
qualitative monitoring event.
3. At Outfall 008, analytical and qualitative monitoring will be continued.
4. Since there is no stormwater runoff associated with an industrial activity as reported in your
request at Outfalls 002 and 033 — 036, no sampling is required
If you change the industrial activity in the drainage areas or significantly change the operation of your
business from its current status, you must notify the Division of Water Quality.
Please contact me with any questions or concerns at [phone] ext. 360.
)raft ;
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: w".newatcrq litv.ore Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax [phone].623.6748
An Equal Action Empbyer-5D%Re*WIO%Pad Cor►SlnnerPaNr

Lee N. Williams
Duke Energy—NCS000020
August 10, 2007
3 1/ 1b�3 4-_7.=
cc: Mooresville Regional Office
Central Files
Stormwater Permitting Unit Files
Sincerely,
Robert Patterson, PE
Environmental Engineer