NCS000554_Fact sheet binder_20241106

DEQ / DEMLR
FACT SHEET FOR NPDES INDUSTRIAL INDIVIDUAL
STORMWATER PERMIT DEVELOPMENT
Basic Information for Permit Issuance and Renewals:
Permit Writer/Date Brianna Young 10/21/2024
Permit Number NCS000554
Owner/Facility Name Duke Energy Carolinas,LLC/Buck Combustion
Turbine Combined Cycle Station
SIC(NAICS)Code/Category 4911 (221112)/Electric power generation(fossil
fuel as
Basin Name/Sub-basin number Yadkin Pee-Dee/03-07-04
Receiving Stream/HUC Yadkin River(including upper portion of High Rock
Lake below normal operating level)/030401030105
Stream Classification/Stream Segment WS-V/ 12- 108.5
Is the stream impaired on 303 d list]? See Section 2 below
Any TMDLs? No
Any threatened and/or endangered species? Yes; See Section 2 below
Any compliance concerns? See Section 2 below
Any permit mods since lastpermit? See Section 1 below
New expiration date 11/30/2029
Comments on Draft Permit? See Section 6 below
Section 1. Facility Activities and Process:
The Buck Combined Turbine Cycle Station(CTCC) is a natural gas fired electric generation station that
began operation in 2011 and generates 620 megawatts of power. This facility is located on the same
property as the former Buck Steam Station coal-fired power plant (demolition completed in 2019; site
remediation completed in April 2021; stormwater permit NCS000578). The CTCC is approximately
2,000 feet south and upland of the former Buck Steam Station and northwest of the ash settling basin.
Off-spec coal ash that cannot be processed in the onsite STAR unit is hauled off-site to Roanoke Cement
for processing. A public hearing was held with the 2018 permit issuance for NCS000554 in conjunction
with NCS000578.
The site currently has two (2)primary combustion turbine units, one secondary heat recovery steam
generator unit, and a 230 W and 110 W regional substation facility. The site also contains a switchyard
used by Energy Delivery as a standalone switchyard. It is not used by Buck CTCC. The drainage area
has outfalls SW001 and SW002. The switchyard was previously the primary switchyard for the
demolished coal-fired steam station.
Per the permit renewal application, since the last permit renewal, the old Buck Steam Station
Powerhouse and associated facilities have been demolished(removal of outfalls SW005, SW007,
SWO11, SW015, SW016, SW023, SW025, SW027, SW032, SW034, SW035, SW038, SW039, SW058,
SW065, SW066, SW067, SW069, SW070, SW071, and SW072). The area in the vicinity of the old
steam station powerhouse has been cleaned up and industrial activity in those areas has been eliminated
(removal or plugging of outfalls SW003, SW048, SW056, SW078, SW079, SW080 and SW081). The
area in the vicinity of the old steam station powerhouse, railroad and access road has been cleaned up
and industrial activity in those areas have been eliminated(removal of outfalls SW073 and SW077).
Page 1 of 12

The permit renewal application states Duke Energy wishes to rescind stormwater permit NCS000578
and move the remaining outfalls into stormwater permit NCS000554. Duke Energy also has NPDES
wastewater permit NC0004774 for the site.
Outfall SW001: Outfall SW001 (CC)
Drainage area consists of two (2) gas turbine buildings, two (2)heat recovery steam buildings, stream
turbine building, water treatment building, auxiliary boiler building, cooling tower, two (2) chiller
buildings, administration/control/warehouse building, raw water treatment facility, large transformers,
power distribution center, emergency diesel generator, three (3) large water tanks, ammonia AST, bulk
fuel oil storage containers, tanker unloading stations, oil storage building, switchyard, clarifier,
overground natural gas pipelines, and a retention pond. Discharge is from the pond and manually
controlled. Potential pollutants include: mineral oil, lube oil, diesel, kerosene, gasoline, ammonia, raw
water treatment chemicals (sodium hypochlorite, ferric sulfate, caustic), and cooling tower treatment
chemicals (sodium hypochlorite, microbiocide).
Outfall SW002:
Drainage area consists of a switchyard. Per the previous permit application: Units 5 and 6 switchyard, a
small paved area beneath Units 8 and 9 precipitators, and open drains to a 15,000-gallon-capacity oil
trap tank. Significant materials included mineral oil.
Outfall SW003:
Drainage area consists of a trailer,parking areas, well house, and ash haul road.
Outfall SW004:
Drainage area consists of the ash haul road.
Outfall SW075:
Drainage area consists of laydown yard, trailers, construction storage yard warehouse, construction
material laydown, outage laydown, ash haul road, and a retention pond. Discharge is from the pond and
manually controlled. Potential pollutants include: mineral oil, ammonia, and raw water chemical
treatment.
Additional outfalls:
Outfalls 001 and 002 belong to a standalone switchyard for Units 5 and 6 and were part of the former
coal plant(NCS000578). Per a conversation with DEMLR staff Jerry Eplin and Mike Lawyer(on
4/10/2024), permit coverage is not needed as the switchyard is not connected to the gas-powered plant.
Outfalls SW003, SW048, SW056, SW078, and SW079 have been removed or plugged and no longer
discharge. Outfalls SW005, SW007, SWO11, SW015, SW016, SW023, SW025, SW027, SW032,
SW034, SW035, SW038, SW039, SW058, SW065, SW066, SW067, SW069, SW070, SW071, and
SW072 have been removed and no longer discharge. Outfalls SW073 and SW077 no longer have
industrial activity in their drainage areas.
SW080 and SW081 were not marked on renewal application site map. These outfalls were previously
identified as not permitted in last permit.
Page 2 of 12

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 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:
• October 2018 to March 2024, benchmarks exceeded for:
o SW001: No benchmark exceedances
o SW075: TSS 5x, Silver Ix, Copper 6x, Lead Ix, Zinc 2x, Mercury 5x
o SW002: No monitoring data provided(new outfall)
o SW003: Outfall has been removed; no monitoring data provided
o SW048: Outfall has been removed; no monitoring data provided
o SW056: Outfall has been removed; no monitoring data provided
o SW073: No longer contains industrial activity; no monitoring data provided
o SW077: No longer contains industrial activity; no monitoring data provided
o SW078: Outfall has been removed; no monitoring data provided
o SW079: Outfall has been removed; no monitoring data provided
• Per letter dated 5/30/2019, outfall SW001 of NCS000578 was in Tier 3 status for zinc
• Per letter dated 7/22/2020, outfalls SW002 and SW077 of NCS000578 were in Tier 3 status for
copper
Page 3 of 12

303(d) listing:
ADKIN RIVER(including upper portion of High Rock 12-(108.5)bi WS-V 369. FW Acres
(Lake below normal operating level)
1318 From mouth of Grants Creek to Buck Steam Statio
PARAMETER i IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
Turbidity(50 NTU,AL,FW miles) F57JExoeeding Criteria 1 1 2013
PCB Fish Tissue Advisory{Advisory, FC,NC} 0 Exceedin Criteria DHHS Fish Consumption Advisory 241d
ADKIN RIVER(including upper portion of High Rock 12-(108.5)b2 WS-V 3,078.5 FW Acres
Lake below normal operating level)
13315 From Buck Steam Plant to a line across High Rack Lake from the downstream side of mouth of Crane
reek to the downstream side of mouth of Swearing Creek
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
PCB Fish Tissue Advisory(Advisory, FC,NC] Fs7kxoeeding Criteria 6HHS Fish Consumption Advisory I 2414
YADKIN RIVER (including upper portion of High Rock 12-(108.5)b3 WS-V 735.9 FiNAcres
Lake below normal operating level)
13355 From Buck Steam Plant to Swearing Creek Arm of High Rack Lake
PARAMETER IR CATEGORY CRITERIA STATUS REASON FOR RATING 303D YEAR
pH (9.D,AL,FW) 0 Exceed i ng Criteria 2D18
Chlorophyll a(40 µdl,AL,NC) 0 Exceedin Criteria 2D48
PCB Fish Tissue Advisory(Advisory,FC,NC) 0 Exceedin Criteria 6HHS Fish Consumption Advisory71
241d
Threatened/Endangered Species:
Threatened/endangered species in the nearby vicinity of the facility include the Bald Eagle (Haliaeetus
Leucocephalus; NC status: T; Federal status: T) and Carolina Birdfood-trefoil (Acmispon helleri; NC
status: T).
Section 3. Proposed Monitoring for Stormwater Discharges:
The Division considered potential pollutants from past and present industrial activities (coal-fired
electric generation, natural gas electric generation, and ash removal) and data was submitted for October
2018 to March 2024. Quantitative sampling included SW001 and SWO02: pH, TSS, O&G, total
nitrogen, total ammonia, copper, mercury, selenium, zinc, and PCBs; SW075: pH, TSS, antimony,
arsenic, boron, beryllium, cadmium, chromium, copper, nickel, lead, mercury, selenium, silver, thallium,
and zinc.
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 Buck Combined Cycle site.
Page 4 of 12

Outfall SW001
Quarterly monitoring
Total Suspended Solids BASIS: Potential pollutant from drainage area and BMP effectiveness
(TSS) indicator.
Quarterly monitoring
pH BASIS: Pollutant indicator
Quarterly monitoring
Total Rainfall BASIS: Discharge potential indicator
Quarterly monitoring
Non-Polar Oil &Grease BASIS: Standard monitoring parameter; Potential pollutant from
lubricants; Method 1664 SGT-HEM targets petroleum-based O&G
Quarterly monitoring
Monthly Oil Usage BASIS: Standard monitoring parameter; Potential pollutant from drainage
area
Quarterly monitoring
COD BASIS: Discharge potential indicator
Quarterly monitoring
BASIS: Potential pollutant from drainage area; Draft permit allows an
exemption if the company provides information on: ammonia spill
prevention procedures; how stormwater will be evaluated for ammonia
Ammonia Nitrogen contamination prior to release; and how the facility will handle or dispose
of any contaminated stormwater. DEQ must approve the exemption in
writing if measures are adequate to minimize risk of discharge. However,
if a significant spill (reportable quantity) of ammonia occurs, the
exemption expires.
Quarterly monitoring
BASIS: Potential pollutant from drainage area; Draft permit allows an
exemption if the company provides information on: ammonia spill
prevention procedures; how stormwater will be evaluated for ammonia
Total Nitrogen contamination prior to release; and how the facility will handle or dispose
of any contaminated stormwater. DEQ must approve the exemption in
writing if measures are adequate to minimize risk of discharge. However,
if a significant spill (reportable quantity) of ammonia occurs, the
exemption expires.
Page 5 of 12

Outfall SWO02
Quarterly monitoring
Total Suspended Solids BASIS: Potential pollutant from drainage area and BMP effectiveness
(TSS) indicator.
Quarterly monitoring
pH BASIS: Pollutant indicator
Quarterly monitoring
Total Rainfall BASIS: Discharge potential indicator
Quarterly monitoring
Non-Polar Oil &Grease BASIS: Standard monitoring parameter; Potential pollutant from
lubricants; Method 1664 SGT-HEM targets petroleum-based O&G
Quarterly monitoring
Monthly Oil Usage BASIS: Standard monitoring parameter; Potential pollutant from drainage
area
Page 6 of 12

Outfalls SW003, SW004, and SW075
Quarterly monitoring
Total Suspended Solids BASIS: Potential pollutant from drainage area and BMP effectiveness
(TSS) indicator. These outfalls may be impacted by hauling coal ash from the
ash pond.
Quarterly monitoring
H BASIS: Pollutant indicator and important to interpreting toxicity potential
p of metals.
Quarterly monitoring
Total Rainfall BASIS: Discharge potential indicator
Quarterly monitoring
Non-Polar Oil &Grease BASIS: Standard monitoring parameter; Potential pollutant from
lubricants; Method 1664 SGT-HEM targets petroleum-based O&G
Quarterly monitoring
Monthly Oil Usage BASIS: Standard monitoring parameter; Potential pollutant from drainage
area
Quarterly monitoring
Total Antimony BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Arsenic BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Beryllium BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Boron BASIS: Coal combustion waste (CCW) constituent/coal tracer.
Quarterly monitoring
Total Cadmium BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Chromium BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Copper BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Lead BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Mercury BASIS: Coal combustion waste (CCW) constituents.
Page 7 of 12

Outfalls SW003, SW004, and SW075 (cont.)
Quarterly monitoring
Total Nickel BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Selenium BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Silver BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Thallium BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Zinc BASIS: Coal combustion waste (CCW) constituents.
Quarterly monitoring
Total Hardness BASIS: Monitoring for hardness dependent metals is required
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.
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
Page 8 of 12

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, 1983
Solids TSS
H 6 s.u. —9 s.u. NC Water Quality Standard(Range)
Non-Polar Oil & Review of other state's daily maximum benchmark
Grease 15 mg/L concentration for this more targeted O&G;NC WQS that
EPA Method 1664 does not allow oil sheen in waters
(SGT-HEM)
COD 120 mg/L BPJ; Generally found at levels 4x BOD5 in domestic
wastewaters
Total Nitrogen 30 mg/L TKN +Nitrate+Nitrite Benchmarks (Expressed in mg/L of
N
Ammonia Nitrogen At 7.5 s.u. pH and summer(26°C) temperature from
(Summer) 5.6 mg/L Wasteload Allocation document for the coastal plain region
worst-case scenario
Ammonia Nitrogen At 7.5 s.u. pH and winter(14°C) temperature from
(Winter) 15 mg/L Wasteload Allocation document for the coastal plain region
worst-case scenario
Antimony Total 340 /L Acute Aquatic Criterion, 1/2 FAV
Arsenic Total 340 /L Acute Aquatic Criterion, 1/2 FAV
Beryllium Total 65 /L Acute Aquatic Criterion, 1/2 FAV
Boron 34,000 µg/L CCW/Coal constituent;Narrative National Recommended
Water Quality Criterion
Cadmium Total 3 /L Acute Aquatic Criterion, '/2 FAV
1/2 FAV; Based on (Cr III+Cr VI) acute thresholds and
Chromium(Total) 905 µg/L assumption that industrial activities here are not a source of
hexavalent chromium
Copper Total 10 /L Acute Aquatic Criterion, 1/2 FAV
Lead Total 75 /L Acute Aquatic Criterion, 1/2 FAV
Mercury (Total) 12 ng/L Chronic 02B standard
Nickel Total 335 /L Acute Aquatic Criterion, 1/2 FAV
Selenium(Total) 5 µg/L 1/2 FAV,NC-specific, based on 1986 Study on Se impacts in
NC
Silver Total 0.3 /L Acute Aquatic Criterion, 1/2 FAV
Thallium Total 2,000 /L Based on EPA Safe Drinking Water Act MCL
Zinc Total 126 /L Acute Aquatic Criterion, 1/2 FAV
Stormwater Pollution Prevention Plan: The proposed permit conditions reflect the EPA and NC's
pollution prevention approach to stormwater permitting. The Division's maintains that implementation
of Best Management Practices (BMPs) and traditional 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
Page 9 of 12

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.
Mercury Monitoring Requirements: The proposed permit requires mercury to be measured in
stormwater samples by EPA Method 1631E, which can detect levels as low as 0.5 ng/l. This requirement
is consistent with federal rule-making that requires NPDES permittees to monitor discharges with
sufficiently sensitive test procedures approved under 40 CFR §136. Modifications to 40 CFR §122.44(i)
require a method that has a minimum level (ML) at or below the effluent limit (not applicable here), or
the lowest minimum level (ML) of EPA approved analytical methods for the measured parameter. Based
on results, Method 1631E will be required to quantify levels in these discharges. NC DEMLR
understands that this method is more costly and requires a more intensive sampling protocol than most
other parameters.
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 mercury 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.
• Federal regulations 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.
Page 10 of 12

Section 4. Changes from previous permit to draft:
• Regulatory citations added
• Monitoring increased from semi-annually to quarterly for all parameters (qualitative and
quantitative)
• "No discharge" clarifications made
• Feasibility study requirement removed per updated stormwater program requirements
• Annual online SWPPP certification requirement removed per updated stormwater program
requirements
• eDMR requirement updated
• Boilerplate language moved into body of the permit; boilerplate no longer attached
• Outfall-specific monitoring been implemented to reflect industrial activity and potential
pollutants specific to each discharge area
• Language on coal ash has been added throughout Part B as coal ash hauling occurs onsite
o Language pulled from NCS000578
• Monitoring for total copper removed from SW001 as this is not a potential pollutant of concern
at the facility
o Included in the pervious permit as receiving waters were identified as impaired for
copper and there was a potential wastewater contribution from a previously unidentified
ash basin toe drain connection. These are no longer concerns.
• Monitoring for COD added for SW001 due to the presence of chemicals stored onsite
• Outfalls SW002, SW003, and SWO04 added based on information provided during the permit
renewal process
• Monitoring for Outfall SW075 added
o Outfall is from NCS000578 and being added to NCS000554 per permittee's request
o NCS000578 will be rescinded upon issuance of NCS000554
• Benchmarks updated for parameters per guidance from DWR Standards group on stormwater
benchmarks
Section 5. Changes from draft to final:
• None
Section 6. Discussions with the Facility and Regional Office:
• Initial contact with facility: 1/3/2024
• Initial contact with Regional Office: 1/3/2024
• Draft sent to CO peer review: 5/22/2024
• Draft sent to Regional Office: 6/26/2024
• Final permit sent for supervisor signature: 10/25/2024
Page 11 of 12

Section 7. Comments received on draft permit:
• Joyce Dishmon (Duke Energy; via email 7/22/2024): Duke Energy respectfully submits
comments on the draft NPDES Permit NCSOOOS54 received on June 26, 2024. An updated Site
Map is attached. Please update the site map in the permit file.
• Ray Whitner (PWS; via email 7/25/2024): I appreciate the opportunity to review the subject
draft NPDES permit and have included my response below in bold to satisfy the new paperless
standards. I concur with issuance of the above permit as I have no appreciable expertise in
implementation of the Clean Water Act requirements and have minimal understanding of the
information provided. As a result, I have no basis for opposing the permit.
• Jerry Eplin (DEMLR MRO; via email 10/9/2024): I reviewed the NCS000554 draft permit and
saw no issues with it.
Page 12 of 12

musbury Post Publisher's Affidavit of Publication
STATE OF NORTH CAROLINA Ho.1046704
ROWAN COUNTY
NORTH CAROLIHA
ENVIROMENT
Before the undersigned, a NotaryPublic of said county and COMMISSION
IN ENT TO ISSUE
CDMMISSiOH INTENT t0 ISSUE
state, duly commissioned, qualified, and authorized by law
to administer oaths, personally appeared JCHN CARR,who HPOES STORMWATER DISCHARGE
being first duly sworn, deposes and says that he is PUB- PERMITS
LISHER of the SALISBURY POST,published,issued and en- The North Carolina Environmen-
tered as second class mail in the city of Salisbury,in Rowan tal Management Commission
County, North Carolina, that he is authorized to make this water dschargeoses to pe mi(s io the
affidavit and sworn statement,that the notice or other legal person(s) listed below. Public
advertisement, a true copy of which was attached hereto, comment or objection to the draft
permits is invited. Written com-
was published in the SALISBURY POST, on the following ments regarding the proposed
dates: permit will be accepted until 3Q
days after the publish date of this
notice and considered in the final
06/30/24 determination regarding permit
issuance and permit provisions.
The Director of the NC Division
of Energy, Mineral, and Land
Resources (DEMLR) may hold a
and that the said newspaper in which such notice, paper public hearing should there be a
document or legal advertisement was published at the time significant degree of public inter-
est. Please mail comments and/
of each and every such publication, a newspaper meeting or information requests to DEMLR
all the requirements and qualifications of Section 1-597 of ttig612 Mail Service
Center, Ra-
the General Statutes of North Carolina, and was a qualified ,o
newspaper within the meaning of Section 1-597 of the Gen-
g 2 Duke Energy Carolinas, LLC O
eral Statutes of North Carolina, [1385 Dukeville Road, Salisbury, c�
NC] has requested renewal and Q
modification of permit NCS000554
for the Buck Combustion Turbine
At a C05t Of $130 t Combined Cycle Station in Rowan ,p
County.This facility discharges to
Account#: 311828 the Yadkin River in the Yadkin Pee-
Tagline: SP-Stormwater Oischa Dee River Basin.
Purchase Order#: Interested persons may vis-
it DEMLR at 512 N. Salisbury
/ J street, Raleigh, NC 27604 to re-
view information on file.Additional
information on NPDES permits
and this notice may be found on
our website: https://deq.nc.gov/
(signature of person making affidavit) about/divisions/energy-miner-
a I-and-I and-re sou rces/stormwa-
ter/stormwate r-programistormwa-
ter-public-notices,or by contacting
BriannaYoung at brianna.young@
Sworn and subscribed before me on 07/01/24. deq.nc.govorstsao7-3647.
Publish Salisbury Post:06130124.
Notary Public
My commission expires 05/02/2026

Young, Brianna A
From: Eplin,Jerry W
Sent: Wednesday, October 9, 2024 4:37 PM
To: Young, Brianna A
Subject: RE: Follow up on Stormwater Issues
Brianna:
reviewed the NCS000554 draft permit and saw no issues with it.
Regards,
Jerry W. Eplin, PE
Regional Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral, and Land Resources
Office: [phone]
Email: lerry.eplin(a�deq.nc.gov
Physical and Mailing Address:
610 E. Center Ave. Suite 301
Mooresville, NC 28115
D
E Qx&7,A-
,
Q�p�{q� gnmriiisl q�allYy
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties
From:Young, Brianna A<[e-mail]>
Sent: Monday, September 30, 2024 1:41 PM
To: Eplin,Jerry W<[e-mail]>
Subject: RE: Follow up on Stormwater Issues
Hi Jerry,
NCS000321— Nothing needed from WSRO at this time
NCS000329— Nothing needed from WSRO at this time
NCS000330— Nothing needed from WSRO at this time
NCS000554—The draft permit was submitted for PN but I haven't received any comments (if any)from WSRO on the
draft permit yet
Thanks,
Brianna
1

Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
From: Eplin,Jerry W<[e-mail]>
Sent: Friday, September 27, 2024 5:01 PM
To:Young, Brianna A<[e-mail]>
Subject: Follow up on Stormwater Issues
Hi Brianna: I am getting caught back up on the Stormwater issues, after Kathryn's departure. Can you tell me
whether you are waiting on MRO for anything related to the following?
Young Brianna Stormwater Discharge, Individual Renewal NCS000321 Lubrizol Advar
Young Brianna Stormwater Discharge, Individual Renewal NCS000329 ATI Specialty
Young Brianna Stormwater Discharge, Individual Renewal NCS000330 ATI Specialty
Young Brianna Stormwater Discharge, Individual Renewal with major NCS000554 Buck Combus
Jerry W. Eplin, PE
Regional Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral, and Land Resources
Office: [phone]
Email: jerry.eplin(a�deq.nc.gov
Physical and Mailing Address:
610 E. Center Ave. Suite 301
Mooresville, NC 28115
ie
.... .... ... ....
{}��,,21i51Fi11<��F n,�ronniriii�I{kil liYy
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
2

DUKE Buck Combined Cycle Station
1385 Dukeville Road
ENERGY. Salisbury,NC 28146
July 22, 2024
Ms. Brianna Young
Industrial Stormwater Permit Coordinator
Stormwater Program
NC DEQ/Division of Energy, Mineral and Land Resources
1612 Mail Service Center
Raleigh, NC 27699-1612
Subject: Draft Comments-General Permit NCS000554
Buck Combined Cycle
Rowan County
Dear Ms.Young:
Duke Energy Carolinas, LLC. (Duke Energy) respectfully submits comments on the draft NPDES Permit
NCS000554 received on June 26, 2024.
1. An updated Site Map is attached. Please update the site map in the permit file.
Should you have any questions regarding this submittal or require additional information, please let me
know.
Thank you,
'
�1oyZe Dishmon
EHS—Permitting and Compliance
Attachment
Cc: Dale Wooten, EHS
Charles Sammons,Superintendent of Operations

li 5 t
' l
I I r r*
--
Id��
f r
n
_ wrlw--
— � q�. ~'raj-,`-„'---,- i ..�. � � � � __ - - � _ _- _
Rnrk Lrak ,w yr I Ci - — _
go AIN Co
I,I I vr\_f l v +I ~ 'I1�)ya({ /l I I er
POWER PLAKT
•� q�, � . S Q� l //
.�''^✓- r7.5 fGZ;;-1-1..1 ` I,�I •�+-� I 5 _ *�'.+ y !{�---� /:♦(/J{r�J 1
ASH 6A81N-_—• •I.� � �/� � '..�' lt, `�r / Il
WASTE BOUNDAR'i •— ,I I. � l _ :_. _!
`9 BUCK STEAM LI ,i ''\ • ira !
a } I
i I J F
Trxtl
PARCEL ME
rn i
5
SOURCE:
2016 USGS TOPOGRAPHIC MAP,SALISBURY&SOUTHMONT
QUADRANGLE,OBTAJNED FROM THE US'GS STORE AT
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH I '
CJSROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200{I51AD63).
t�DUKE FIGURE14
'ENERGY SITE LOCATIGN MAP
, SEEP MANAGEMENT PLAN
BUCK STEAM STATION
-• SALISBURY.NORTH CAROLINA
crr:wawmo arAwac�cuc
x.rsc er.a.aoaw wr:v.74'9 o 'lb ROOD AM 3000
y�, fJ'FCl3b Qr'A MLIifF ft r.h474'7d:d -
�V�� �➢CIi01.00 OY.iMIl2P 6fC:6L^4.dM

Compliance Inspection Report
Permit:NCS000554 Effective: 08/01/18 Expiration: 07/31/23 Owner: Duke Energy Progress LLC
SOC: Effective: Expiration: Facility: Buck Combustion Turbine Combined Cycle Sta
County: Rowan 1385 Dukeville Rd
Region: Mooresville
Salisbury NC 28146
Contact Person:Mark McGary Title: Phone: [phone]
Directions to Facility:
System Classifications: SWNC,
Primary ORC: Certification: Phone:
Secondary ORC(s):
On-Site Representative(s):
Related Permits:
Inspection Date: 02/28/2024 Entry Time 10:OOAM Exit Time: 01:OOPM
Primary Inspector:Jerry W Eplin Phone: [phone]
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Stormwater Discharge, Individual
Facility Status: Compliant ❑ Not Compliant
Question Areas:
Storm Water
(See attachment summary)
Page 1 of 3

Permit: NCS000554 Owner-Facility:Duke Energy Progress LLC
Inspection Date: 02/28/2024 Inspection Type:Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
DEMLR conducted a compliance evaluation inspection in relation to the permit renewal request. Mooresville Regional Office
(MRO) personnel, Jerry Eplin and Shannon Leonard, inspected the facility on February 28, 2024. Note that with the renewal
request, the facility is also requesting to rescind the stormwater permit for the former Buck Steam Station site, which is
immediately adjacent to this Combined Cycle Station. Part of that request is that at least one outfall, SW-075, be merged
into the permit for NCS000554.
The facility was found to have compliant records available for review. Training has been performed on at least an annual
basis. Plan review is occurring at least annually. Required monitoring is being performed.
In general, MRO is supportive of the request to renew the permit and to merge SW-075 into this permit. However, a
switchyard, which the facility maintains is a standalone switchyard not requiring a stormwater discharge permit, still exists
on the former Buck Steam Station property. MRO recommends additional discussion on this topic prior to rescinding the
Buck Steam Station permit and prior to renewing the Combined Cycle permit. Furthermore, it was found that haul roads and
the Buck Tie Switchyard, not previously included in the NCS000554 facility permit, should be added to the NCS000554
permit.
MRO recommends requesting an updated drainage area map, showing all outfalls that should be covered under NCS000554
including those associated with the haul roads and the Buck Tie Switchyard facility.
Page 2 of 3

Permit: NCS000554 Owner-Facility:Duke Energy Progress LLC
Inspection Date: 02/28/2024 Inspection Type:Compliance Evaluation Reason for Visit: Routine
Stormwater Pollution Prevention Plan Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan? ❑ ❑ ❑
#Does the Plan include a General Location (USGS) map? ❑ ❑ ❑
#Does the Plan include a"Narrative Description of Practices"? ❑ ❑ ❑
#Does the Plan include a detailed site map including outfall locations and drainage areas? ❑ ❑ ❑
#Does the Plan include a list of significant spills occurring during the past 3 years? ❑ ❑ ❑
#Has the facility evaluated feasible alternatives to current practices? ❑ ❑ ❑
#Does the facility provide all necessary secondary containment? ❑ ❑ ❑
#Does the Plan include a BMP summary? ❑ ❑ ❑
#Does the Plan include a Spill Prevention and Response Plan (SPRP)? ❑ ❑ ❑
#Does the Plan include a Preventative Maintenance and Good Housekeeping Plan? ❑ ❑ ❑
#Does the facility provide and document Employee Training? 0 ❑ ❑ ❑
#Does the Plan include a list of Responsible Party(s)? 0 ❑ ❑ ❑
# Is the Plan reviewed and updated annually? 0 ❑ ❑ ❑
#Does the Plan include a Stormwater Facility Inspection Program? 0 ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented? 0 ❑ ❑ ❑
Comment:
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring? 0 ❑ ❑ ❑
Comment:
Analytical Monitoring Yes No NA NE
Has the facility conducted its Analytical monitoring? 0 ❑ ❑ ❑
#Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ 0 ❑
Comment:
Permit and Outfalls Yes No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? 0 ❑ ❑ ❑
#Were all outfalls observed during the inspection? ❑ ❑ ❑
# If the facility has representative outfall status, is it properly documented by the Division? ❑ ❑ ❑
#Has the facility evaluated all illicit(non stormwater)discharges? 0 ❑ ❑ ❑
Comment:
Page 3 of 3

Young, Brianna A
From: Whitner, Raymond A
Sent: Thursday,July 25, 2024 7:59 PM
To: Young, Brianna A
Cc: Cook, Clinton
Subject: Draft NPDES Permit NCS000554 (Buck Combustion Turbine Combined Cycle Station)
Dear Ms.Young:
I appreciate the opportunity to review the subject draft NPDES permit and have included my response below in bold to
satisfy the new paperless standards.
I concur with issuance of the above permit as I have no appreciable expertise in implementation of the Clean Water
Act requirements and have minimal understanding of the information provided. As a result, I have no basis for
opposing the permit.
If you have any questions or need any additional information, please let me know.
Sincerely,
Ray Whitner
Raymond A.WhUner,III
Assistant Regional Engineer
Division of Water Resources- Public Water Supply Section
e-04r D North Carolina Department of Environmental Quality
E
. 704 235 2132 office
n,a� wr:••k �a,,,m� 9$0 447 0215 cell
704 663 6040 fax
Raym on d.Ulf h itn er@Pd eq.n c.g ov
Moofesvlllel Reg ion M Office
610 East Center Avenue, Suite 301
Mooresville, NC 20115
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
1

(L� DUKE Buck Combined Cycle Plant
1385 Dukeville Road
EN ERG 1 Salisbury, NC 28146
April 24, 2024 81k,
Brianna Young
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/DEMLR
1612 Mail Service Center
Raleigh, NC 27699-1612
Re: Stormwater Permit Amendment--NCS000578 and NCS000554
Buck Combined Cycle and Buck Steam Station
Rowan County
Dear Ms. Young,
Duke Energy Carolinas, LLC (Duke) respectfully submits the amendment request for the referenced permits for
your review and process.
Permit NCS000578
Based upon a site visit and review by Jerry Eplin, Duke requests the rescission of NCS000578. and the inclusion of
SW075 in permitNCS000554.
Demolition of the coal steam station was completed in 2019 with the site remediation completed in April 2021. The
switchyard associated with the former coal station is a stand-alone switchyard and not associated with Buck
Combined Cycle. The switchyard is not tied to any generators/energy and has been added to Transmission's Asset
Management. The switchyard infrastructure is maintained by this management team and is covered under their
SPCC Plan.
Outfall SW075 is an industrial outfall that served a dual-purpose during the operation of the coal steam station but
currently the only industrial activity associated with this outfall is the drainage area from the warehouse and ash
haul road. The attached updated drainage map shows the requested new location of outfall SW075.
Permit NCS000554
Duke is requesting the addition of outfall SW002. This outfall is for the drainage area associated with Buck Tic
Switchyard. The sampling location requested is due to the stormwater flows under the road and then sheet flows to
the Yadkin River tributary.
Ash Haul Road
Duke was required to obtain a Certificate of Coverage, COC, from the United States Department of Agriculture to
haul ash from Duke's Buck Station to Roanoke Cement due to Fire Ant Quarantine Zones, see attached. The

Certificate of Coverage requires Duke to remove the loose ash from the exterior of the trucks and the trucks be
covered prior to leaving the ash basin. Duke requests that this site-specific requirement from USDA be considered
in the determination for requirement of stormwater outfalls for ash hauling.
Duke identified outfalls along the ash haul road, SWO03 and SW004. Based upon the requirements in the COC
with USDA,Duke is requesting that outfall SWO03 and outfall SWO04 not be included in the permit and the
representative outfall for the ash haul road be either SW075 or SW002.
Drainage area for outfall SWO03 includes an office trailer, well house, and parking lots. Outfall SWO03 is on the
opposite side of the road from outfall SWO02(Buck Tie Switchyard)and is a separate outfall. The industrial activity
would be ash hauling at outfall SW003. Due to the locations of outfalls SWO02 and SWO03, Duke requests that
outfall SWO03 not be included in the permit with outfall SWO02 being representative of both drainage areas.
Drainage area for outfall SWO04 consists of a steep vegetated slope that collects at a culvert. The only industrial
activity is ash hauling. The terrain at outfall SWO04 presents safety concerns during sampling events.
If you have any questions, please contact Joyce Dishmon at 336-394-5524 or [e-mail].
"I certify, tinder penalty of law, that this document and all attachments were prepared under nay direction
or supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the information submined is, to the best
of my knowledge and belief, true, accurate, and complete. 1 am aware that there are significant penalties
for submitting false information, including the possihility of fines and imprisonment for knowing
violations. "
Sincerely,
Kristopher Eisenrieth
GM II - Regulated Station
Attachments
cc: Jerry Eplin, PE,NC DEMLR
Dale Wooten, EHS
Joyce Dishmon, SME—Water Permitting
USPS Tracking:
7019 0140 0001 0794 0524/9590 9402 0001 0794 0524

According to the PapeivioO Redaction Acl W 1995,no persons ore required to fesprind to a collection of information unless if UMB APPROVED
Msplays a valid OMfa control nunit}er. The valid OMB conlm number far this inFirrinabnn rnllr cline is 0575-Dt784.The lime 057940541008810129!
required to complete this Inforrnalion collel:bon is estimated to avoiagr 1,25 hours per msponso,including the time for 019(1102,571031 D103171
reviewing insiructions,searching e_xiwinq data 5ouicf—,gatliering and maintainfrig the dal-o neeilwf,and completing and 03 2 210 33 7i0346103G3)
reviewing the collection of information [l:iti9
UNITED STATES DEPARTMENT OF AGRICULTURE
ANIMAL AND PLANT HEALTH INSPECTJON SERVICE COMPLIANCE AGREEMENT
PLANT PROTECTION AND QUARANTINE
1.NAF1C AND MAIL:NC ADi7RFSS[1F PERSON OR FIRM. 2 LIGATION'
Duke fneigys Burk.Sltttiur•Ki+s Eisunrleth 1565 Dukawiie Rd
1385 Duiceville Rd Salisbury, NC 28146
Salisbury.NC 28146
courtly: ROWAN
3. REGULATED ARTICLES)
SoilrCcal Asn:Usea Soii' oal Ash Mnvrn9 Equipment
4, APPLICABLE FFOERAL QUARANTINE(S)OR REGULATIONS:
Imported Fti(e Aol Federall70FR 3O1.a1) Imported Fite Ant.NC(02 NCAG 48A C700)
5.INVE AC313EE TO THE tOLLOVVIN(-,-
All equipment.vAl be cleaned of any loose,noncompaied soil and plant material before leaving the quarantine area
1.The rovement of regulated arlirlec nrtginating in IN,regulated areas that are destined for non-regulated areas will he arcannpanied by a cerVieaies of
permit oolained from the North Carolina Department of Agriculture and Consumur Services(NGDA&CS)or Uniled Slates Department of Agriculture.
Animal and'#aril Hcdilll tnspecli0n Service-Plant Protection and Quarantine(USDA,APHIS.PPQ).Specific localiers or regulated anti nor,-regulated
areas should be obtained from tree NCDA&CS.Plant Industry Division(1.800.206 9333).2.All contaminated equipment and machinery sha:l be cleaneu
before it is moved from a quarantined work site,3 Prcpnsed or existirg soil and sand pit locations In the regulated areas wlfl be appreved by a federal ai
state regulatory ofifc'rrI prior In any excavaltun 4.A cedirmale or permit must accompany the movement of soil samples from the impoited fire and
quarantined areas,
Stipulations:See Attachment.
6 TURF 7.TITLE 8.DATE SIGNED
(- i
— AGREEMENT NO.
fhe affixing of the signature below will Va:idate this agreementwhich shall remain In effect until
cancelled,but may he revised as necessary or revoked for noncompliance. 4558
10. DATE OF AGREEMENT'
35149;2022
11 PPC7,t3P OFFICJAL 1NA.-AE AND TITLE) 12 ADDRESS
Joseph H"KWilh,Slale Plant HeMth DireCtr:r USDA-APHIS-PPQ
13 SIG 920 Main Campus Drive Ste 150
9ea2022 06 22 14:C2459-04'00' Raleigh.NC2760ti
M&PH BECKWITH pDitlly signed by
14.State Agency Official(N me and Titt 15 ADDRESS
NCDA&CS
Plant Industry Owswsn
16 ',IGWTIIRE !!]1050 Mail Service(;enter
Raleigh.NC 27699
PPQ FORM 519 Frevious editions t}efure 2010 are obsolete
SEE'2017.

Stipulations for Compliance Agreement between Duke Energy and USDA-APHIS-PPQ
This agreement allows the movement of Coal Ash from the Duke Energy Buck Station (1385
Dukeville Rd., Salisbury,NC 28146)to Roanoke Cement (6701 Catawba Rd., Troutville,VA
24175) &Belews Creek Landfill(3191 Pine Hall Rd., Walnut Cove,NC 27052).
Duke Energy agrees that:
1. Only Coal Ash from the Duke Energy Buck Station site will be transported.
2. All Coal Ash moved from the site must go directly to the final sites for treatment and/or
disposal.
3. All trucks used for transport will be covered in some manner to prevent spillage of Coal
Ash.
4. Loose Coal Ash/Soil on the outside of the truck will be removed prior to departure.
5. NCDA&CS will be notified at 919-707-3742 if any operational procedures need to be
changed.
Kris Eisenrieth
Duke Energy's Buck Station
1385 Dukeville Road
Salisbury,NC 28146

. Outfall Coordinates N
3''• SW075 -80°22'23.335"W 35'42'44.111"N
t
Combined Cycle SWO01 -80°22'38.805"W 35°42'29.752"N
SWO02 -80°22'42.379"W 35°42'31.537"N
SWO03 -80°22'42.903"W 35°42'32.177"N
SW004-80°22'45.273"W 35°42'39.908"N
,�• -
QF V _
tt,L, SW075iyt
't
Legend
c Outfalls
r , L Existing Outfall
'"�, i '� �_� Potential Outfall
" SW004 F ' : ,
r
Industrial Stormwater
Haul
- ! Surface Ar-41 ea Drained: Drainage Areas
` t - Combined Cycle SWO01
N • ,� ��// ,. ®SW075 Drainage Area
Haul Road Area
� swops
I' Surface Area Buck Tie Switch Yard
Mn Industrial Activilty
N Surface Area Drained:38.47 acres
No Industrial Activity
Drained: 10.84 acres
-6
x
E
0 0 - Buck Tie Switch Yard , Notes:
surface area Per existing USDA permit, all trucks must
y _ Drained: 1s.2s acres be swept off and covered prior to leaving
in
the ash basin.
`w SW003 '
m -
E
S W 002
N
7 '
v Combined
o Gycle SW001
N -
Z
7
Combined Cycle'SW001
Surface Area
c 'Drained: 21.93 acres
0
E - Figure 1
Industrial Stormwater Permit
Y I
:. Drainage Map
ti Buck Steam Station
Duke Energy
Rowan County, North Carolina
y 0 150 300 600 ERM\�
J ; Feet
LL
Source: Esri-World Topographic Map; NAD 1983 StatePlane North Carolina FIPS 3200 Feet

1
Outfall Coordinates
SW075 -80°22'23.335"W 35'42'44.111"N
Combined Cycle SWO01 -80°22'38.805"W 35°42'29.752"N
SWO02 -80°22'42.379"W 35°42'31.537"N
SWO03 -80°22'42.903"W 35°42'32.177"N
SWO04-80°22'45.273"W 35°42'39.908"N veo cd R
d
r 4li
t-&X i'ry`
c
3 ry
v Wfard
Miles �CI
4
r �
Legend
Outfalls
Existing Outfall
M swooa a", 7, � ; Potential Outfall
�,
J j 1 Haul Industrial Stormwater
Surface Area Drained:" :7 Drainage Areas
z.7a acres Combined Cycle SWO01
o SW075 Drainage Area
~ swops i 0 Haul Road Area
o NodndustrialI tivity Surface Area ` 0 Buck Tie Switch Yard
VI —r ce'Area� Drained: 38.47 acres i
�� �, ��� No Industrial Activity
w Drained: 10.84 acres
i
E �
o Buck Tie Switch Yard Notes:
J Surface Area Per existing USDA permit, all trucks must
Drained: 15.25 acres �-
in a be swept off and covered prior to leaving
0
the ash basin.
4 SW O03
3 $' Y'SWO02
in .
a
- Combined
o+' Cycle SW001
N
X
Z
Combined Cycle SW003
u, - 7 Surface Area
o.
Drained: acres
r
,yf6,
; . -E Figure 1
E
y Industrial Stormwater Permit
F Drainage Map
Buck Steam Station
Duke Energy
- Rowan County, North Carolina
300 ERM
600
{.
Source: Esri-World Topographic Map; NAD 1983 State Plane North Carolina FIPS 3200 Feet

Young, Brianna A
From: Dishmon, Joyce Martin <[e-mail]>
Sent: Friday, April 26, 2024 9:17 AM
To: Young, Brianna A; Eplin, Jerry W
Cc: Wooten, Dale; Newcomb, Dana H
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater
permit NCS000554
Attachments: 554 Map.pdf
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
I have attached Buck Combined Cycles'Amended Drainage Map for NCS000554. Please let me know if you have
questions/comments or need additional information.
Regards,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From: Dishmon,Joyce Martin
Sent:Thursday,April 25, 2024 8:35 AM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Brianna,
I have included information on the requirements by United States Dept of Agriculture for your consideration. This
information is included in the permit amendment letter.
Ash Haul Road
Duke was required to obtain a Certificate of Coverage,COC,from the United States Department of Agriculture to haul ash
from Duke's Buck Station to Roanoke Cement due to Fire Ant Quarantine Zones,see attached. The Certificate of Coverage
requires Duke to remove the loose ash from the exterior of the trucks and the trucks be covered prior to leaving the ash
basin. Duke requests that this site-specific requirement from USDA be considered in the determination for requirement
of stormwater outfalls for ash hauling.
i

Duke identified outfalls along the ash haul road,SW003 and SW004. Based upon the requirements in the COC with USDA,
Duke is requesting that outfall SWO03 and outfall SW004 not be included in the permit and the representative outfall
for the ash haul road be either SW075 or SW002.
Hard copy file will be placed in the mail today.
Thank you,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From:Young, Brianna A<[e-mail]>
Sent:Wednesday,April 24, 2024 11:19 AM
To: Dishmon,Joyce Martin <Joyce.Dishmon @duke-energy.com>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Good morning Joyce,
Just following up on our previous correspondence. Have you completed the updated site map? I have not seen it come
through yet.
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
From: Dishmon,Joyce Martin <Joyce.Dishmon @duke-energy.com>
Sent:Tuesday, April 16, 2024 1:35 PM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail]>
Cc: Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
2

CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
We are working on an updated drainage area map. We have a meeting with the consultant to complete the map
tomorrow. The updated map will assist in answering your questions.
Thank you,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From: Young, Brianna A<[e-mail]>
Sent:Tuesday, April 16, 2024 1:30 PM
To: Dishmon,Joyce Martin <[e-mail]>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
CAUTION! STOP. • expecting
and spelling correct? Does the content make sense? Can you verify the sender? If suspicious report it, then do
not click links, open attachments or enter your ID or password.
Good afternoon Joyce,
After some internal discussions, I have a few follow up questions.
• Could you provide an updated drainage map, clarifying the activities that occur in each drainage area?
• Please clarify where the coal ash hauling is occurring across the site (identify the haul roads).
• There appear to be two outfalls at the end of the haul road (see red circle below). Please confirm the presence
and outfall coordinates.
• Is the switchyard (see blue circle below) connected to the combined cycle station, or an independent
switchyard?
3

• v .
i
4 �
ti • • F'
I
y �
i x •
y
Thank you,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
From: Young, Brianna A
Sent: Wednesday, April 10, 2024 1:05 PM
To: Dishmon,Joyce Martin <[e-mail]>; Eplin, Jerry W<[e-mail]>
Cc: Wooten, Dale <[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Hello Joyce,
Thank you for providing this information. I will reach out with any additional questions once I've had a chance to review
everything.
Thank you,
Brianna Young, MS (she/her)
Industrial Individual Permits Coordinator
4

Stormwater Permitting 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.
From: Dishmon,Joyce Martin <Joyce.Dish [e-mail]>
Sent:Tuesday, April 9, 2024 8:15 AM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: FW: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
I am forwarding answers to you questions below. I have included items from the site visit on 2/28/24. After you have
had a chance to review the information, please send some dates you would be available for either a Teams call or
office/site visit.
Thank you for your assistance.
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
Please review answers in blue.
From:Young, Brianna A
Sent:Wednesday,January 3, 2024 9:32 AM
To: Cahoon, Steve<[e-mail]>; Wooten, Dale<[e-mail]>
Cc: [e-mail]; Bednarcik,Jessica L<Jessica.Bed [e-mail]>
Subject: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Good morning,
I am working on renewing the individual stormwater permit for the Buck Combustion Turbine Combined Cycle
Station (NCS000554). I need additional information in order to 1) confirm that the information I have is correct
and 2)make sure the permit adequately serves the needs of the facility. Please provide the following:
5

• Confirmation on when the coal ash plant was fully decommissioned; Demolition was completed in
2019; Site remediation was completed in April 2021.
• Confirmation on whether coal ash from clean-up operations is being hauled through any permitted
stormwater drainage areas; - Off-spec coal ash that cannot be processed in the onsite STAR unit is
hauled off-site to Roanoke Cement for processing. The site Environmental Field Support and I walked
down the area and determined the area impacted. The area would make its way to outfall SW075. We
reviewed the area with Jerry Eplin and proposed a new sampling location for SW075. It is a different
location that was identified in the permit application and captures both flows from the haul road and
warehouse/laydown area. Please see attached Google Earth Map. I am working on an updated drainage
area map to submit as an amendment to the application file.
• Confirmation on the status of outfall SW002 and what occurs in this drainage area (i.e. Is this the Buck
Tie Station or a switchyard for Units 5 and 6); - SW002 is from the switchyard for Units 5 and 6. The
former coal plant has been removed and site has been remediated. Per the attached email, the
switchyard from the former coal station is not connected to any generators and has been transferred to
the Asset Management Team. Buck Steam Station has asked for SW000578 to be closed based upon no
industrial activity.
• The renewal application provided monitoring data for two SW001 outfalls. Please confirm which outfall
is which; - The data table for SW001 Combined Cycle, see attached, is for NCS000554.
• Provide more information regarding outfalls SW001 and SW002 identified near the Energy Delivery
property on the previously provided site map; - These outfalls are associated with the former coal fired
station which has been removed and site remediated. These outfalls are associated with NXS000578
which Duke is requested that this permit be rescinded and SW075 moved to permit NCS000554.
• An electronic spreadsheet summarizing all of the monitoring data that has been collected since the
effective date of the current permit; - Are you requesting data for both permits? SW001 is an attached.
• Verification that the information in the renewal application is still complete and correct; and—the
changes to the permit will include coal ash haul road drainage area which currently drains and is
sampled at outfall SW075
• An explanation of any operational changes since the renewal application was submitted. — There have
been no operational changes since the permit application was submitted.
Enter your stormwater permit number into the Stormwater Permit Summary Report and you will see a form that
includes the address of the facility, contact information for the permit, and the regulated stormwater outfall(s)
for the facility. Please review the facility information to make sure it is correct. Information can be updated
using the links provided below, where applicable:
• Facility/Company name or ownership: Name/Ownership Change Form
• Owner Affiliation(Legally responsible person; i.e., someone with the company who is designated to
represent the company per signatory requirements or another authorized representative): Permit Contact
Update Request Form
• Delegation of Signature Authority (DOSA): Permit Contact Update Request Form
• Billing contact: Permit Contact Update Request Form
• Permit contact: Permit Contact Update Request Form
• Facility contact: Permit Contact Update Request Form
• Facility address only: Email Bethany og ulias
• Stormwater outfall information: Email Bethany Geor og ulias
• Visit the eDMR Six Steps website and complete Steps 1 and 2
• Pay outstanding permit fees: 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
6

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.
Please contact me if you have any questions.
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail](e-mail preferred)PLEASE NOTE NEW EMAIL ADDRESS
919-707-3647 (office)
Mailing address: 1612 Mail Service Center, Raleigh, INC 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.
The Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Please
check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
7

Young, Brianna A
From: Dishmon, Joyce Martin <[e-mail]>
Sent: Thursday, April 25, 2024 8:35 AM
To: Young, Brianna A; Eplin, Jerry W
Cc: Wooten, Dale; Newcomb, Dana H
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater
permit NCS000554
Attachments: USDA - Certificate of Coverage.pdf, Stormwater Permit Amendment NCS000578 and
NCS000554 04242024.pdf
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Brianna,
I have included information on the requirements by United States Dept of Agriculture for your consideration. This
information is included in the permit amendment letter.
Ash Haul Road
Duke was required to obtain a Certificate of Coverage,COC,from the United States Department of Agriculture to haul ash
from Duke's Buck Station to Roanoke Cement due to Fire Ant Quarantine Zones,see attached. The Certificate of Coverage
requires Duke to remove the loose ash from the exterior of the trucks and the trucks be covered prior to leaving the ash
basin. Duke requests that this site-specific requirement from USDA be considered in the determination for requirement
of stormwater outfalls for ash hauling.
Duke identified outfalls along the ash haul road,SWO03 and SW004. Based upon the requirements in the COC with USDA,
Duke is requesting that outfall SWO03 and outfall SWO04 not be included in the permit and the representative outfall
for the ash haul road be either SW075 or SW002.
Hard copy file will be placed in the mail today.
Thank you,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From:Young, Brianna A<[e-mail]>
Sent:Wednesday,April 24, 2024 11:19 AM
To: Dishmon,Joyce Martin <[e-mail]>; Eplin,Jerry W<[e-mail]>
1

According to the Paperwork Reduction Act of 1995,no persons are required to respond to a collection of information unless it OMB APPROVED
displays a valid OMB control number. The valid OMS control number for this information collection is 0579-0054,The time 0579-00541D08810129/
required to complete this information collection is estimated to average 1.25 hours per response,including the time for 01 9810 25 7/031 010 3 1 7/
reviewing instructions,searching existing data sources,gathering and maintaining the data needed,and completing and 0322/0337/0346/0363/
reviewing the collection of information. 0369
UNITED STATES DEPARTMENT OF AGRICULTURE
ANIMAL AND PLANT HEALTH INSPECTION SERVICE COMPLIANCE AGREEMENT
PLANT PROTECTION AND QUARANTINE
1.NAME AND MAILING ADDRESS OF PERSON OR FIRM: 2,LOCATION-
Duke Energy's Buck Station-Kris Eisenrleth 1365 Dukeville Rd
1365 Dukeville Rd Salisbury, NC 28146
Salisbury,NC 28146
County: ROWAN
3. REGULATED ARTICLE(S):
SoillCcal Ash;Used Soil/Coal Ash-Moving Equipment
4. APPLICABLE FEDERAL QUARANTINE(S)OR REGULATIONS:
Imported Fire Ant:Federal(7CFR 301.81);Imported Fire Ant.NC(02 NCAC 48A.0700)
S.INVE AGREE TO THE FOLLOWING:
All equipment will be cleaned of any loose,noncompated soil and plant material before leaving the quarantine area.
1.The movement of regulated articles originating in the regulated areas that are destined for non-regulated areas will be accompanied by a certificate or
permit obtained from the North Carolina Department of Agriculture and Consumer Services(NCDA&CS)or United States Department of Agriculture,
Animal and Plant Health Inspection Service-Plant Protection and Quarantine(USDA,APHIS,PPQ).Specific locations or regulated and non-regulated
areas should be obtained from the NCDA&CS,Plant Industry Division(1-800-206-9333),2.All contaminated equipment and machinery shall be cleaned
before it is moved from a quarantined work site.3.Proposed or existing soil and sand pit locations in the regulated areas will be approved by a federal or
state regulatory official prior to any excavation.4.A certificate or permit must accompany the movement of soil samples from the imported fire ant
quarantined areas,
Stipulations:Sae Attachment.
6, TU E 7.TITLE 8,DATE SIGNED
( Pit T—T 51 m z a
9. A REEM NT NO.
The affixing of the signature below will validate this agreement which shall remain in effect until
cancelled,but may be revised as necessary or revoked for noncompliance. 4558
10. DATE OF AGREEMENT
95/09/2022
11.PPQ/CEP OFFICIAL,(NAME AND TITLE.) 12. ADDRESS
Joseph Beckwith,State Plant Health Director USDA-APHIS-PPQ
13.SIGNATURE 920 Main Campus Drive Ste,150
Raleigh,NC 27606
14.State Agency Official(Nand TIN 15 ADDRESS
NCDA&CS
Plant industry Divsion
16,SIGNATURE 1060 Mail Service Center
Raleigh,NC 27699
PPQ FORM 519 Previous editions before 2010 are obsolete
SEP 2012

Stipulations for Compliance Agreement between Duke Energy and USDA-APHIS-PPQ
This agreement allows the movement of Coal Ash from the Duke Energy Buck Station(1385
Dukeville Rd., Salisbury, NC 28146) to Roanoke Cement (6701 Catawba Rd., Troutville, VA
24175) &Belews Creek Landfill (3191 Pine Hall Rd., Walnut Cove, NC 27052).
Duke Energy agrees that:
1. Only Coal Ash from the Duke Energy Buck Station site will be transported.
2. All Coal Ash moved from the site must go directly to the final sites for treatment and/or
disposal.
3. All trucks used for transport will be covered in some manner to prevent spillage of Coal
Ash.
4. Loose Coal Ash/Soil on the outside of the truck will be removed prior to departure.
5. NCDA&CS will be notified at 919-707-3742 if any operational procedures need to be
changed.
Kris Eisenrieth
Duke Energy's Buck Station
1385 Dukeville Road
Salisbury, NC 28146

r� DUKE Buck Combined Cycle Plant
1385 Dukevilfe Road
ENERGY. Salisbury,NC 28146
April 24, 2024
Brianna Young
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/DEMLR
1612 Mail Service Center
Raleigh,NC 27699-1612
Re: Stormwater Permit Amendment—NCS000578 and NCS000554
Buck Combined Cycle and Buck Steam Station
Rowan County
Dear Ms. Young,
Duke Energy Carolinas, LLC (Duke) respectfully submits the amendment request for the referenced permits for
your review and process.
Permit NCS000578
Based upon a site visit and review by.ferry Eplin, Duke requests the rescission of NCS000578. and the inclusion of
SW075 in permit NCS000554.
Demolition of the coal steam station was completed in 2019 with the site remediation completed in April 2021. The
switchyard associated with the former coal station is a stand-alone switchyard and not associated with Buck
Combined Cycle. The switchyard is not tied to any generators/energy and has been added to Transmission's Asset
Management. The switchyard infrastructure is maintained by this management team and is covered under their
SPCC Plan.
Outfall SW075 is an industrial outfall that served a dual-purpose during the operation of the coal steam station but
currently the only industrial activity associated with this outfall is the drainage area from the warehouse and ash
haul road. The attached updated drainage map shows the requested new location of outfall SW075.
Permit NCS000554
Duke is requesting the addition of outfall SW002. This outfall is for the drainage area associated with Buck Tic
Switchyard. The sampling location requested is due to the stormwater flows under the road and then sheet flows to
the Yadkin River tributary.
Ash Haul Road
Duke was required to obtain a Certificate of Coverage, COC, from the United States Department of Agriculture to
haul ash from Duke's Buck Station to Roanoke Cement due to Fire Ant Quarantine Zones, see attached. The

Certificate of Coverage requires Duke to remove the loose ash from the exterior of the trucks and the trucks be
covered prior to leaving the ash basin. Duke requests that this site-specific requirement from USDA be considered
in the determination for requirement of stormwater outfalls for ash hauling.
Duke identified outfalls along the ash haul road, SW003 and SW004. Based upon the requirements in the COC
with USDA,Duke is requesting that outfall SWO03 and outfall SW004 not be included in the permit and the
representative outfall for the ash haul road be either SW075 or SW002.
Drainage area for outfall SW003 includes an office trailer, well house, and parking lots. Outfall SW003 is on the
opposite side of the road from outfall SW002(Buck Tie Switchyard)and is a separate outfall. The industrial activity
would be ash hauling at outfall SW003. Due to the locations of outfalls SW002 and SW003, Duke requests that
outfall SW003 not be included in the permit with outfall SW002 being representative of both drainage areas.
Drainage area for outfall SW004 consists of a steep vegetated slope that collects at a culvert. The only industrial
activity is ash hauling. The terrain at outfall SW004 presents safety concerns during sampling events.
If you have any questions,please contact Joyce Dishmon at 336-394-5524 or [e-mail].
"I certify, under penalty of law, that this document and all attachments were prepared under my direction
or supervision in accordance with a system designed to assure that qualifiedpersonnelproperly gather and
evaluate the information submitted. Based on 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,
Kristopher Eisenrieth
GM II -Regulated Station
Attachments
cc: Jerry Eplin, PE,NC DEMLR
Dale Wooten, EHS
Joyce Dishmon, SME—Water Permitting
USPS Tracking:
7019 0140 0001 0794 0524/9590 9402 0001 0794 0524

Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Good morning Joyce,
Just following up on our previous correspondence. Have you completed the updated site map? I have not seen it come
through yet.
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
From: Dishmon,Joyce Martin <[e-mail]>
Sent:Tuesday, April 16, 2024 1:35 PM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
We are working on an updated drainage area map. We have a meeting with the consultant to complete the map
tomorrow. The updated map will assist in answering your questions.
Thank you,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From:Young, Brianna A<[e-mail]>
Sent:Tuesday, April 16, 2024 1:30 PM
2

To: Dishmon,Joyce Martin <[e-mail]>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
STOP.CAUTION! EXTERNAL SENDER *** ASSESS.VERIFYH Were • expecting
and spelling correct? Does the content make sense? Can you verify the sender? If suspicious report it, then do
not click links, open attachments or enter your ID or password.
Good afternoon Joyce,
After some internal discussions, I have a few follow up questions.
• Could you provide an updated drainage map, clarifying the activities that occur in each drainage area?
• Please clarify where the coal ash hauling is occurring across the site (identify the haul roads).
• There appear to be two outfalls at the end of the haul road (see red circle below). Please confirm the presence
and outfall coordinates.
• Is the switchyard (see blue circle below) connected to the combined cycle station, or an independent
switchyard?
f
lips
S t
a � a
Y
�. ,. l'
It-
-, r
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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
3

Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
From:Young, Brianna A
Sent: Wednesday,April 10, 2024 1:05 PM
To: Dishmon,Joyce Martin<Joyce.Dishmon @duke-energy.com>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Hello Joyce,
Thank you for providing this information. I will reach out with any additional questions once I've had a chance to review
everything.
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
From: Dishmon,Joyce Martin <Joyce.Dishmon @duke-energy.com>
Sent:Tuesday, April 9, 2024 8:15 AM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<][e-mail]>
Cc: Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: FW: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
I am forwarding answers to you questions below. I have included items from the site visit on 2/28/24. After you have
had a chance to review the information, please send some dates you would be available for either a Teams call or
office/site visit.
Thank you for your assistance.
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
4

Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
Please review answers in blue.
From: Young, Brianna A
Sent: Wednesday,January 3, 2024 9:32 AM
To: Cahoon, Steve<[e-mail]>; Wooten, Dale<[e-mail]>
Cc: [e-mail]; Bednarcik,Jessica L<Jessica.Bed [e-mail]>
Subject: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Good morning,
I am working on renewing the individual stormwater permit for the Buck Combustion Turbine Combined Cycle
Station (NCS000554). I need additional information in order to 1) confirm that the information I have is correct
and 2)make sure the permit adequately serves the needs of the facility. Please provide the following:
• Confirmation on when the coal ash plant was fully decommissioned; Demolition was completed in
2019; Site remediation was completed in April 2021.
• Confirmation on whether coal ash from clean-up operations is being hauled through any permitted
stormwater drainage areas; - Off-spec coal ash that cannot be processed in the onsite STAR unit is
hauled off-site to Roanoke Cement for processing. The site Environmental Field Support and I walked
down the area and determined the area impacted. The area would make its way to outfall SW075. We
reviewed the area with Jerry Eplin and proposed a new sampling location for SW075. It is a different
location that was identified in the permit application and captures both flows from the haul road and
warehouse/laydown area. Please see attached Google Earth Map. I am working on an updated drainage
area map to submit as an amendment to the application file.
• Confirmation on the status of outfall SWO02 and what occurs in this drainage area (i.e. Is this the Buck
Tie Station or a switchyard for Units 5 and 6); - SWO02 is from the switchyard for Units 5 and 6. The
former coal plant has been removed and site has been remediated. Per the attached email, the
switchyard from the former coal station is not connected to any generators and has been transferred to
the Asset Management Team. Buck Steam Station has asked for SW000578 to be closed based upon no
industrial activity.
• The renewal application provided monitoring data for two SW001 outfalls. Please confirm which outfall
is which; - The data table for SW001 Combined Cycle, see attached, is for NCS000554.
• Provide more information regarding outfalls SW001 and SWO02 identified near the Energy Delivery
property on the previously provided site map; - These outfalls are associated with the former coal fired
station which has been removed and site remediated. These outfalls are associated with NXS000578
which Duke is requested that this permit be rescinded and SW075 moved to permit NCS000554.
• An electronic spreadsheet summarizing all of the monitoring data that has been collected since the
effective date of the current permit; - Are you requesting data for both permits? SW001 is an attached.
• Verification that the information in the renewal application is still complete and correct; and— the
changes to the permit will include coal ash haul road drainage area which currently drains and is
sampled at outfall SW075
• An explanation of any operational changes since the renewal application was submitted. — There have
been no operational changes since the permit application was submitted.
Enter your stormwater permit number into the Stormwater Permit Summary Report and you will see a form that
includes the address of the facility, contact information for the permit, and the regulated stormwater outfall(s)
5

for the facility. Please review the facility information to make sure it is correct. Information can be updated
using the links provided below, where applicable:
• Facility/Company name or ownership: Name/Ownership Change Form
• Owner Affiliation (Legally responsible person; i.e., someone with the company who is designated to
represent the company per signatory requirements or another authorized representative): Permit Contact
Update Request Form
• Delegation of Signature Authority (DOSA): Permit Contact Update Request Form
• Billing contact: Permit Contact Update Request Form
• Permit contact: Permit Contact Update Request Form
• Facility contact: Permit Contact Update Request Form
• Facility address only: Email Bethany og ulias
• Stormwater outfall information: Email Bethany Georgoulias
• Visit the eDMR Six Steps website and complete Steps 1 and 2
• Pay outstanding permit fees: 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.
Please contact me if you have any questions.
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail](e-mail preferred) PLEASE NOTE NEW EMAIL ADDRESS
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.
The Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Please
check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
6

Young, Brianna A
From: Dishmon, Joyce Martin <[e-mail]>
Sent: Tuesday, May 7, 2024 8:08 AM
To: Young, Brianna A
Cc: Wooten, Dale; Newcomb, Dana H
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater
permit NCS000554
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
The stormwater culverts for SWO02 and SWO03 are located as noted on the updated drainage map. The Corners noted
were locations where stop signs are located and identified in the first walkdown. Please let me know if you need
additional information.
Thank you,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From:Young, Brianna A<[e-mail]>
Sent: Monday, May 6, 2024 3:16 PM
To: Dishmon,Joyce Martin <[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Hi Joyce,
After reviewing the information you sent, I do have one follow-up question. In the site map you provided,were outfalls
SWO03 and SWO04 marked in the correct places? I would like to confirm as Jerry had noted that two outfalls existed at
the end of the road marked Corner#1 (see red circle below), but in the updated site map provided, outfalls SWO03 and
SWO04 are marked in different locations.
i

• - 4 0`
1 y -
r
1
S W 004
Haul Rnad
Surface Area Grained: ?
2.74 acres
y
No Industnal,Activi
/ �Surfaae' reams
wined:10.Sd acres
- - r+ �J. � uck Tie Switch Yard
Surtace Area
- drained: 15.25 acres
SW003 f
S W O02
C.—hi ned
Cycle SW 001
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/ Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail](e-mail preferred)
919-707-3647 (office)
2

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.
From:Young, Brianna A
Sent: Friday,April 26, 2024 1:06 PM
To: Dishmon,Joyce Martin <Joyce.Dishmon @duke-energy.com>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Thank you for this information,Joyce. I'll reach back out with any questions once I've had a chance to review everything.
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
From: Dishmon,Joyce Martin <[e-mail]>
Sent: Friday,April 26, 2024 9:17 AM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail]. ov>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
I have attached Buck Combined Cycles'Amended Drainage Map for NCS000554. Please let me know if you have
questions/comments or need additional information.
Regards,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
3

From: Dishmon,Joyce Martin
Sent:Thursday,April 25, 2024 8:35 AM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail]. ov>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Brianna,
I have included information on the requirements by United States Dept of Agriculture for your consideration. This
information is included in the permit amendment letter.
Ash Haul Road
Duke was required to obtain a Certificate of Coverage,COC,from the United States Department of Agriculture to haul ash
from Duke's Buck Station to Roanoke Cement due to Fire Ant Quarantine Zones,see attached. The Certificate of Coverage
requires Duke to remove the loose ash from the exterior of the trucks and the trucks be covered prior to leaving the ash
basin. Duke requests that this site-specific requirement from USDA be considered in the determination for requirement
of stormwater outfalls for ash hauling.
Duke identified outfalls along the ash haul road,SW003 and SW004. Based upon the requirements in the COC with USDA,
Duke is requesting that outfall SW003 and outfall SW004 not be included in the permit and the representative outfall
for the ash haul road be either SW075 or SW002.
Hard copy file will be placed in the mail today.
Thank you,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From:Young, Brianna A<[e-mail]>
Sent:Wednesday,April 24, 2024 11:19 AM
To: Dishmon,Joyce Martin <Joyce.Dishmon @duke-energy.com>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Good morning Joyce,
Just following up on our previous correspondence. Have you completed the updated site map? I have not seen it come
through yet.
Thank you,
4

Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
From: Dishmon,Joyce Martin <Joyce.Dish [e-mail]>
Sent:Tuesday, April 16, 2024 1:35 PM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail]. ov>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
We are working on an updated drainage area map. We have a meeting with the consultant to complete the map
tomorrow. The updated map will assist in answering your questions.
Thank you,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From:Young, Brianna A<[e-mail]>
Sent:Tuesday, April 16, 2024 1:30 PM
To: Dishmon,Joyce Martin <Joyce.Dishmon @duke-energy.com>; Eplin,Jerry W<[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
CAUTION! STOP. • expecting
'and spelling correct? Does the content make sense? Can you verify the sender? If suspicious report it, then do
not click links, open attachments or enter your ID or password.
Good afternoon Joyce,
5

After some internal discussions, I have a few follow up questions.
• Could you provide an updated drainage map, clarifying the activities that occur in each drainage area?
• Please clarify where the coal ash hauling is occurring across the site (identify the haul roads).
• There appear to be two outfalls at the end of the haul road (see red circle below). Please confirm the presence
and outfall coordinates.
• Is the switchyard (see blue circle below) connected to the combined cycle station, or an independent
switchyard?
a _ i
■
t
I
1 4�J
y
s
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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:S12 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.
From:Young, Brianna A
Sent:Wednesday,April 10, 2024 1:05 PM
To: Dishmon,Joyce Martin <[e-mail]>; Eplin,Jerry W<[e-mail]>
Cc: Wooten, Dale<[e-mail]@duke-energy.com>; Newcomb, Dana H <[e-mail]@duke-energycom>
Subject: RE: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
6

Hello Joyce,
Thank you for providing this information. I will reach out with any additional questions once I've had a chance to review
everything.
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
From: Dishmon,Joyce Martin <[e-mail]>
Sent:Tuesday, April 9, 2024 8:15 AM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail].�ov>
Cc:Wooten, Dale<[e-mail]>; Newcomb, Dana H <[e-mail]>
Subject: FW: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
I am forwarding answers to you questions below. I have included items from the site visit on 2/28/24. After you have
had a chance to review the information, please send some dates you would be available for either a Teams call or
office/site visit.
Thank you for your assistance.
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
Please review answers in blue.
From:Young, Brianna A
Sent: Wednesday,January 3, 2024 9:32 AM
To: Cahoon, Steve<[e-mail]>; Wooten, Dale<[e-mail]>

Cc: [e-mail]; Bednarcik,Jessica L<Jessica.Bed [e-mail]>
Subject: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Good morning,
I am working on renewing the individual stormwater permit for the Buck Combustion Turbine Combined Cycle
Station (NCS000554). I need additional information in order to 1) confirm that the information I have is correct
and 2)make sure the permit adequately serves the needs of the facility. Please provide the following:
• Confirmation on when the coal ash plant was fully decommissioned; Demolition was completed in
2019; Site remediation was completed in April 2021.
• Confirmation on whether coal ash from clean-up operations is being hauled through any permitted
stormwater drainage areas; - Off-spec coal ash that cannot be processed in the onsite STAR unit is
hauled off-site to Roanoke Cement for processing. The site Environmental Field Support and I walked
down the area and determined the area impacted. The area would make its way to outfall SW075. We
reviewed the area with Jerry Eplin and proposed a new sampling location for SW075. It is a different
location that was identified in the permit application and captures both flows from the haul road and
warehouse/laydown area. Please see attached Google Earth Map. I am working on an updated drainage
area map to submit as an amendment to the application file.
• Confirmation on the status of outfall SWO02 and what occurs in this drainage area (i.e. Is this the Buck
Tie Station or a switchyard for Units 5 and 6); - SWO02 is from the switchyard for Units 5 and 6. The
former coal plant has been removed and site has been remediated. Per the attached email, the
switchyard from the former coal station is not connected to any generators and has been transferred to
the Asset Management Team. Buck Steam Station has asked for SW000578 to be closed based upon no
industrial activity.
• The renewal application provided monitoring data for two SW001 outfalls. Please confirm which outfall
is which; - The data table for SW001 Combined Cycle, see attached, is for NCS000554.
• Provide more information regarding outfalls SWO01 and SWO02 identified near the Energy Delivery
property on the previously provided site map; - These outfalls are associated with the former coal fired
station which has been removed and site remediated. These outfalls are associated with NXS000578
which Duke is requested that this permit be rescinded and SW075 moved to permit NCS000554.
• An electronic spreadsheet summarizing all of the monitoring data that has been collected since the
effective date of the current permit; - Are you requesting data for both permits? SW001 is an attached.
• Verification that the information in the renewal application is still complete and correct; and—the
changes to the permit will include coal ash haul road drainage area which currently drains and is
sampled at outfall SW075
• An explanation of any operational changes since the renewal application was submitted. — There have
been no operational changes since the permit application was submitted.
Enter your stormwater permit number into the Stormwater Permit Summary Report and you will see a form that
includes the address of the facility, contact information for the permit, and the regulated stormwater outfall(s)
for the facility. Please review the facility information to make sure it is correct. Information can be updated
using the links provided below, where applicable:
• Facility/Company name or ownership: Name/Ownership Change Form
• Owner Affiliation(Legally responsible person; i.e., someone with the company who is designated to
represent the company per signatory requirements or another authorized representative): Permit Contact
Update Request Form
• Delegation of Signature Authority (DOSA): Permit Contact Update Request Form
• Billing contact: Permit Contact Update Request Form
8

• Permit contact: Permit Contact Update Request Form
• Facility contact: Permit Contact Update Request Form
• Facility address only: Email Bethany og ulias
• Stormwater outfall information: Email Bethany Georgoulias
• Visit the eDMR Six Steps website and complete Steps 1 and 2
• Pay outstanding permit fees: Stormwater ePgMent 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.
Please contact me if you have any questions.
Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail](e-mail preferred)PLEASE NOTE NEW EMAIL ADDRESS
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.
The Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Please
check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
9

Young, Brianna A
From: Eplin,Jerry W
Sent: Monday, May 6, 2024 9:04 AM
To: Young, Brianna A
Subject: RE: Buck CC Station (NSC000554)
My notes indicated an additional outfall, near SW004, but on the other side of the road. The SW002 and SW003
Look correct—one outfall on each side of the road. I recommend confirming the same for the other road. They
may be correct, and my notes may be incorrect, but I think it is worth confirming.
Jerry W. Eplin, PE
Regional Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral, and Land Resources
Office: [phone]
Email: jerry.eplin(a�deq.nc.gov
Physical and Mailing Address:
610 E. Center Ave. Suite 301
Mooresville, NC 28115
D,E Qft'A-
R4PP07nM01 6114yfO H mmatI ada"
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties
From:Young, Brianna A<[e-mail]>
Sent: Monday,April 29, 2024 9:09 AM
To: Eplin,Jerry W<[e-mail]>
Subject: Buck CC Station (NSC000554)
Hello Jerry,
I received additional information from Duke about the outfalls for the Buck Combined Cycle Station (NCS000554) and
wanted to confirm something with you.
Duke identified 2 new outfalls (marked SW003 and SW004 in map below) on their site.
1

S11 OO
Haul Road :t
W. Surface Area Drained:
2.74 acres , yyy
rNo.Industrial.Activity
'" ,}}•" •{Surface.-Area'
wired: M64-acres
_ 'r Surface
- + Drained• 15.
f
SW DG
1-woo,
However,you had previously identified two outfalls (one on either side of the road) at Corner#1 in the map below.
■ o
6 #
I
X
J
The 2 new outfalls you identified are in different locations than the 2 new outfalls they identified. Do you agree that the
outfalls SWO03 and SWO04 Duke identified are appropriate sampling points, or should I get further confirmation from
Duke?
Thanks,
Brianna
2

Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting 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.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
3

Young, Brianna A
From: Dishmon, Joyce Martin <[e-mail]>
Sent: Tuesday, April 9, 2024 8:15 AM
To: Young, Brianna A; Eplin, Jerry W
Cc: Wooten, Dale; Newcomb, Dana H
Subject: FW: [EXTERNAL] RE: Buck Combustion Turbine Combined Cycle Station stormwater
permit NCS000554
Attachments: Buck Steam Station - NCS000578; Buck_Combined Cycle-Analytical Summary -
SW001.pdf, NCS000554 - DEMLR Discussion.pdf, Buck_Outfall 075_Analytical
Summary.pdf
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Brianna,
I am forwarding answers to you questions below. I have included items from the site visit on 2/28/24. After you have
had a chance to review the information, please send some dates you would be available for either a Teams call or
office/site visit.
Thank you for your assistance.
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
Please review answers in blue.
From:Young, Brianna A
Sent: Wednesday,January 3, 2024 9:32 AM
To: Cahoon, Steve<[e-mail]>; Wooten, Dale<[e-mail]>
Cc: [e-mail]; Bednarcik,Jessica L<Jessica.Bed [e-mail]>
Subject: Buck Combustion Turbine Combined Cycle Station stormwater permit NCS000554
Good morning,
I am working on renewing the individual stormwater permit for the Buck Combustion Turbine Combined Cycle
Station (NCS000554). I need additional information in order to 1) confirm that the information I have is correct
and 2)make sure the permit adequately serves the needs of the facility. Please provide the following:
• Confirmation on when the coal ash plant was fully decommissioned; Demolition was completed in
2019; Site remediation was completed in April 2021.
• Confirmation on whether coal ash from clean-up operations is being hauled through any permitted
stormwater drainage areas; - Off-spec coal ash that cannot be processed in the onsite STAR unit is
1

hauled off-site to Roanoke Cement for processing. The site Environmental Field Support and I walked
down the area and determined the area impacted. The area would make its way to outfall SW075. We
reviewed the area with Jerry Eplin and proposed a new sampling location for SW075. It is a different
location that was identified in the permit application and captures both flows from the haul road and
warehouse/laydown area. Please see attached Google Earth Map. I am working on an updated drainage
area map to submit as an amendment to the application file.
• Confirmation on the status of outfall SW002 and what occurs in this drainage area (i.e. Is this the Buck
Tie Station or a switchyard for Units 5 and 6); - SW002 is from the switchyard for Units 5 and 6. The
former coal plant has been removed and site has been remediated. Per the attached email, the
switchyard from the former coal station is not connected to any generators and has been transferred to
the Asset Management Team. Buck Steam Station has asked for SW000578 to be closed based upon no
industrial activity.
• The renewal application provided monitoring data for two SW001 outfalls. Please confirm which outfall
is which; - The data table for SW001 Combined Cycle, see attached, is for NCS000554.
• Provide more information regarding outfalls SW001 and SW002 identified near the Energy Delivery
property on the previously provided site map; - These outfalls are associated with the former coal fired
station which has been removed and site remediated. These outfalls are associated with NXS000578
which Duke is requested that this permit be rescinded and SW075 moved to permit NCS000554.
• An electronic spreadsheet summarizing all of the monitoring data that has been collected since the
effective date of the current permit; - Are you requesting data for both permits? SW001 is an attached.
• Verification that the information in the renewal application is still complete and correct; and— the
changes to the permit will include coal ash haul road drainage area which currently drains and is
sampled at outfall SW075
• An explanation of any operational changes since the renewal application was submitted. — There have
been no operational changes since the permit application was submitted.
Enter your stormwater permit number into the Stormwater Permit Summary Report and you will see a form that
includes the address of the facility, contact information for the permit, and the regulated stormwater outfall(s)
for the facility. Please review the facility information to make sure it is correct. Information can be updated
using the links provided below, where applicable:
• Facility/Company name or ownership: Name/Ownership Change Form
• Owner Affiliation(Legally responsible person; i.e., someone with the company who is designated to
represent the company per signatory requirements or another authorized representative): Permit Contact
Update Request Form
• Delegation of Signature Authority (DOSA): Permit Contact Update Request Form
• Billing contact: Permit Contact Update Request Form
• Permit contact: Permit Contact Update Request Form
• Facility contact: Permit Contact Update Request Form
• Facility address only: Email Bethany oulias
• Stormwater outfall information: Email Bethany Geor og ulias
• Visit the eDMR Six Steps website and complete Steps 1 and 2
• Pay outstanding permit fees: 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.
Please contact me if you have any questions.
2

Thank you,
Brianna Young, MS(she/her)
Industrial Individual Permits Coordinator
Stormwater Permitting Program
NC DEQ/Division of Energy, Mineral, and Land Resources (DEMLR)
[e-mail](e-mail preferred)PLEASE NOTE NEW EMAIL ADDRESS
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.
The Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Please
check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
3

Buck Combined Cycle NCS000554- Stormwater Outfall SWO01 Monitoring
0
a
�aZ\` eta° ���o �e\O
yea
Units inches SU mg/L mg/L mg/L mg/L mg/L
Benchmark NA 6.0-9.0 100 0.010 15 8.4 30 SWRetPond to Yadkin R.
Frequency SA SA SA SA SA SA SA
Date
10/10/2018 0.42 6.3 10 0.00364 <4.3 <0.02 <0.1 compliant
1/29/2019 0.18 7.3 15 0.00467 <5.0 <0.02 0.18 compliant
11/12/2019 0.49 7.8 6.6 0.00182 <5.0 <0.02 0.23 compliant
1/24/2020 1.36 7.2 15 0.00460 <5.0 <0.02 0.88 compliant
8/31/2020 2.23 7.7 7.7 0.00149 <5.0 <0.02 0.30 compliant
1/25/2021 0.36 7.0 <2.5 0.00262 <5.0 <0.02 0.23 compliant
7/8/2021 0.31 7.9 3.9 <0.005 <4.9 0.423 0.94 compliant
2/4/2022 0.27 7.0 6.5 0.00316 <4.8 <0.02 0.18 compliant
9/30/2022 1.3 7.1 9.5 0.00204 <4.8 <0.10 <0.5 compliant
2/17/2023 0.30 6.5 6.8 0.00296 <5.0 <0.50 <0.10 compliant
11/21/2023 1.26 8.4 <2.5 <0.002 <2.4 <0.25 0.27 compliant
3/6/2024 1 0.55 8.5 4.6 0.00245 <2.5 <0.25 1.3 compliant
SU -standard units SA-semi-annual
mg/L- milligrams per liter SA-QCA semi-annual or quarterly during during coal or ash transport
ug/L- micrograms per liter Disc-discontinued
ng/L- nanograms per liter ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value- Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three
Tier I (3) consecutive results are below benchmark value.
Tier II
Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3) consecutive results are below
benchmark value.
Tier III Four exceedancesof during monitoringperiod and implement corrective • • ' within 30 days of •r fourth exceedance. protocols
evaluated and potentially modified by NCDENR.
Other Notes:

Buck - Stormwater Outfall SW075 Monitoring
1
aO
� a�
a�� e�`a °� \� ♦ e\ `�\ \L\ \A10 °� o'`a 5�\ e\ �A\ Say \
el �
Parameter �° �'� �° y� Qt �o �e La Lr Lo `j. �e QO ye .fir .�,.° `S` Comments/ Notes
Units inches SU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ng/L 30"CMP to Yadkin R. - Draining ash haul routes
Benchmark NA 6.0-9.0 100 0.0003 0.34 NE 0.065 0.003 0.9 0.010 0.335 0.075 0.09 0.056 NE 0.126 NE
Frequency* SA-QCA SA-QCA SA-QCA SA-QCA I SA-QCA SA-QCA SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA * monthly when in Tier status.
Date
10/11/2018 2.96 8.1 5300 0.000324 0.00864 <0.05 <0.020 <0.001 0.148 0.336 0.109 0.123 <0.001 0.00133 0.00119 0.543 2180 Tier I (TSS, Cu, Zn, Ag, Pb) Hg>12
11-2018 No Flow
12/20/2018 1.61 7.2 15 <0.0002 0.00139 <0.05 <0.001 <0.001 0.00382 1 0.00338 0.00225 <0.001 <0.001 <0.001 <0.0002 0.039 4.19a,g Tier 1 (1 compliance ("c") for TSS, Cu, Zn,Ag, Pb)
1-3/2019 No Flow
4/12/2019 0.52 7.8 1300 <0.0002 0.00224 <0.05 <0.001 <0.001 0.0421 1 0.0985 0.0230 0.0323 <0.001 <0.001 0.000369 0.147 148a�g Tier I (TSS, Cu, Zn)(2nd c: Ag, Pb), Hg>12
5-10/2019 No Flow no flow
11/12/2019 0.49 7.5 470 <0.0002 0.00168 <0.05 <0.001 <0.001 0.0128 1 0.0318 0.00689 0.00973 <0.001 <0.001 <0.0002 0.064 25.1a„g Tier 11 (TSS, Cu),Tier I (1st c: Zn), Hg>12
12/2019 No Flow no flow
1/24/2020 1.36 1 7.5 <0.0002 <0.001 <0.05 <0.001 <0.001 0.0129 1 0.00526 1 0.00810 1 <0.001 <0.001 <0.0002 0.051 28.5 Tier III (TSS, Cu), Tier I (2nd c: Zn), Hg>12
02/2020 No Flow no flow
3/3/2020 0.16 1 7.7 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00119 1 <0.001 I <0.001 I <0.001 <0.001 <0.0002 0.014 1.91 Tier III (1st c: TSS & Cu)
04/2020 No Flow no flow
5/27/2020 0.81 7.7 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 <0.005 1.23avg Tier III (2nd c: TSS & Cu)
6/16/2020 1.89 7.3 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00470 0.00276 0.00425 <0.001 <0.001 <0.0002 0.023 6.52avg Tier III (Cu, 3rd c:TSS)
7/2020 No Flow no flow
8/31/2020 2.23 7.4 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00558 0.00308 0.00648 <0.001 <0.001 <0.0002 0.029 14.5 Tier III (Cu,TSS), Hg>12
9/17/2020 1.69 7.9 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 0.006 2.67avg Tier I II (1st c: Cu &TSS)
10/28/2020 0.28 7.5 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 0.005 2.44 Tier III (2nd c: Cu &TSS)
11/11/2020 0.39 7.7 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00115 <0.001 <0.001 <0.001 <0.001 <0.0002 0.010 5.39 Tier III (3rd c: Cu &TSS)
12/14/2020 1.16 7.2 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00402 0.00195 0.00224 <0.001 <0.001 <0.0002 0.020 11.1 Tier III (4th c: Cu &TSS)
1/25/2021 0.36 7.5 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 0.020 1.71avg Tier III (5th c: Cu &TSS)
2/11/2021 0.45 6.1 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 0.008 0.713a g Tier III (6th c: Cu &TSS)
3/16/2021 0.55 7.4 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00282 1 1 fill 0.00178 0.00256 <0.001 <0.001 <0.0002 0.028 6.51avg Tier III (7th c: Cu &TSS)
4-6/2021 No Flow no flow
7/8/2021 0.31 7.5 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 I VIVIR0.00102 <0.001 <0.001 <0.001 <0.0002 0.024 3.29a�g Tier III (8th c: Cu &TSS)
8/2021 No Flow no flow
9/21/2021 0.96 7.3 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 1 0.00221 <0.001 <0.001 <0.001 <0.0002 0.018 1.72avg Tier III (9th c: Cu &TSS)
10-12/2021 No Flow no flow
01/2022 No Flow no flow
2/23/2022 0.27 7.1 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 <0.005 2.11avg Tier III (10th c: Cu &TSS)
3/16/2022 0.62 6.5 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 <0.005 2.72avg Tier III (11th c: Cu &TSS)

Buck - Stormwater Outfall SW075 Monitoring
�5\
ay
ON
ea a� ova ,�o A1° �° �a� a� ko� A,
110
'Il
a`c JyQ PLO `\P ,�° oP .�� \c. \�'N Q'p\ o°� o� c�` �\ §J\
Pacjm= °tea Q °tea S�Je Q�ye Q> Q� 061, eo L°QQ � `.eaa P��� ���e �'�a� 1��c. � Notes
`ec
Units inches SU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ng/L 30"CMP to Yadkin R. - Draining ash haul routes
Benchmark NA 6.0-9.0 100 1 0.0003 0.34 NE 0.065 0.003 0.9 0.010 0.335 0.075 0.09 0.056 1 NE 0.126 NE
Frequency* SA-QCA SA-QCA SA-QCA SA-QCA I SA-QCA SA-QCA SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA * monthly when in Tier status.
Date
4-8/2022 No Flow no flow
9/30/2022 1.30 7.4 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 0.009 2.05a,g Tier III (12th c: Cu &TSS)
11
10-12/2022 Composite sample was collected during event and not a grab sample
01/2023 No Flow no flow
2/17/2023 0.30 E <0.0003 <0.001 <0.05 <0.001 <0.001 I <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 <0.005 2.01avg Tier III (13th c: Cu &TSS)
03-12/2023 No Flow no flow
1/25/2024 0.65 7.9 <0.0003 <0.001 <0.05 <0.001 <0.001 0.00118 i <0.001 <0.001 <0.001 <0.001 <0.0002 0.045 7.0Oavg Tier III (14th c: Cu &TSS)
2/2024 No Flow no flow
3/6/2024 0.55 7.6 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 <0.015 3.50a_g Tier III (15th c: Cu &TSS)
SU -standard units <- not detected at the following level SA-semi-annual
mg/L- milligrams per liter NA- not applicable SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter NE- not established Disc-discontinued
ng/L- nanograms per liter PCB- polychlorinated biphenyls ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value -Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three (3) consecutive results are below
Tier I benchmark value.
Tier II Two consecutive exceedances of benchmark value - evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three (3)consecutive results are below benchmark value.
Tier III Four exceedances of benchmark value during monitoring period- evaluate causes and implement corrective actions. Notify NCDENR within 30 days of receiving results for fourth exceedance. Sampling protocols evaluated and potentially modified
by NCDENR.
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Young, Brianna A
From: Dishmon, Joyce Martin <[e-mail]>
Sent: Monday, March 11, 2024 1:48 PM
To: Eplin,Jerry W
Cc: Wooten, Dale; Keener, David A
Subject: Buck Steam Station - NCS000578
Jerry,
I reached out to Duke Energy's Transmission Asset Management Team to discuss the switchyard that is associated with
the former Buck Coal Steam Station. The switchyard has been transferred to the Asset Management Team which
manages the SPCC and annual inspection for this infrastructure. The switchyard infrastructure for the former coal steam
station is not connected to any generators. The Stormwater outfalls for the former coal steam station, except SW075,
were removed during demolition and site remediation.
Per our conversation, Duke is asking that permit NCS000578 be rescinded and outfall SW075 be added to permit
NCS000554 Buck Combined Cycle.
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
INDUSTRIAL ACTIVITY

�. -
_
-
�»
�-
.
-
.
. �
S 60,75
� Z
\ Dukeyll
�.
Co ne| #
` m #%
' ® /
�
~ . jBuck Tie ' y-
C�
NC S §, E§ p fall' r �
. %
IL � .
,ƒ
, % \
& /
- • \ '�� . � .
�

Young, Brianna A
From: Eplin,Jerry W
Sent: Thursday, March 28, 2024 9:05 AM
To: Lawyer, Mike;Young, Brianna A
Subject: Buck Steam Station and Combined Cycle Station
The Buck Steam Station is covered under NCS000578. The Steam Station is an old coal burning facility that has
been demolished and no longer exists. The owner has applied to rescind that permit. The Combined Cycle
Station is covered under NCS000554. They have applied to renew it, but they want to transfer one outfall(SW075)
from the Steam Station to the Combined Cycle Station permit. That is the only outfall from NCS00058 that they
believe still has industrial activity.
inspected the facility. In addition to the drainage area to SW075,they have a switchyard,which has 2 oil water
separators,that is on the property of the old Steam Station. It is still in use, as a general switchyard, not
specifically connected to any one facility. The applicant believes this is a "stand alone" switchyard that doesn't
require a permit. I am not extremely familiar with the"stand alone switchyard" issue, but since it is all basically
one big property, I'm not sure we can say it is "stand alone".
Furthermore,there is a larger switchyard that doesn't appear to have been previously covered by stormwater-
- the"Buck Tie" switchyard. It also has oil water separators. Furthermore,there are roads that traverse the
property that are used for hauling that should have their outfalls included in the SW000554 permit.
My general recommendation would be for us to request additional information from the applicant. Ask for an
outfall location/drainage area map, showing all outfalls, including the outfalls for all oil-containing switchyards,
and all haul roads, on the property.
It makes sense to me that the Steam Station permit be rescinded—my understanding is that the reason there were
two separate permits is because they knew the steam station would eventually be done away with. It makes
sense that we would combine all industrial outfalls under one permit. But you will have to decide about the
outfalls related to what they are calling the "stand alone" switchyard.
In the photo below,the blue square is a switchyard with no oil containing equipment. The red square is the"stand
alone" switchyard. The green square is the Buck Tie switchyard. The light blue thick lines show the haul
roads. The pink shaded area is the outfall that they want to move to NCS000554. The dark blue shaded area is
the current NCS000554 permitted area.
wanted to set up a meeting with you two to discuss, but that has just been impossible on my end this week, and
I'm on vacation next week, so I wanted to provide you the info that I have so that you can act as you see fit.
Regards,
i

i
. . �• � - -- - - fir, �„�... �:•�'_r
t
r
1 R r
W _
AP
r
Jerry W. Eplin,
Acting Regional Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral, and Land Resources
Office: [phone]
Email:[e-mail]
Physical and Mailing Address:
610 E. Center Ave. Suite 301
Mooresville, NC 28115
z

- - -7
D,E Qft,A-
Doppelnirid of Enwo mrn dal{Wahlry
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
3

�a
—SVV075
a
Dukeville _ AK
Buck Stearn'Statin
NGS000554 Outfall { A
NCG20 aownstpe m Outfall
f �r
_ - 4
rl R

e e .
� *;.,.��y� •SK- ,1 ,a�'.h fee• eee- !.._-
Legend • � .
Outfalls �
® Active Outfall
Property of Energy Delivery - � ..
+
c
4
® Non Industrial Outfalljt
-
3
*Outfall no longer receiving flow from industrial activity "
�!
Abandoned Outfall
a s �
e� *
Combined Cycle SWO01 Drainage Basin
t
SW075 Drainage Basin e
i . �r:
r - - v
Impervious Surfacely
�-
_
r �
r�
Impervious surfaces are surfaces where }.;, s
stormwater runs off at rates significantly higher than background
rates—e.g.,predevelopment levels.They include paved areas, _
building roofs, parking lots,and roadways. - IF
'
(Source: Application Form 2F Item 4.1) ' C • ` R �''
•
Industrial Stormwater Drainage Data
Impervious Surface Area Total Surface Area Drained it•. t j ;' `
4 .
Basin ID/Outfall (acres) (acres) '
r, M�
6 _ -
,
l
l
Combined Cycle
4
7 � , ;` � � -
SWO01 10.8 18.9
SW075 13.38 36.3
a
dd _ r"
s ,
s.
3�
- r _
4 ;
OIL) i
Stantec
�:% - _• _.- e e e e - • • • • 534 Industrial Park Bluefi ad
Bluefield,VA 2 o05
1 www.cardno.com
e e ee

Young, Brianna A
From: Dishmon, Joyce Martin <[e-mail]>
Sent: Tuesday, February 13, 2024 9:47 AM
To: Eplin,Jerry W
Cc: Wooten, Dale; Leonard, Shannon; Young, Brianna A; Winston, Cynthia C
Subject: RE: [External] Buck Combined Cycle Station - Stormwater Permit Review
Attachments: Current Outfalls.pdf, attachment 4 Sw drainage map.pdf
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Jerry,
Attachment 4 is the Drainage Map submitted with NCS000554 and NCS000578 permit renewal. Buck requested closure
of NCS000578 (Buck Steam Station) due to the demolition of the old steam station and removal of industrial
activity. The current map attachment shows the current outfalls in NCS000554 (Buck Combined Cycle). Buck is
requesting relocation of outfall SW075 to move the sampling location closer to the source discharge but to a location
that collects runoff from industrial activity in the drainage area. Can we set the site visit for 2/28/24 at 10:00 am?
Thank you for meeting with us. If you have any questions/comments or need additional information, please let me
know.
Regards,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
From: Eplin,Jerry W<[e-mail]>
Sent:Thursday, February 8, 2024 9:45 AM
To: Dishmon,Joyce Martin <[e-mail]>
Cc:Wooten, Dale<[e-mail]>; Leonard, Shannon <[e-mail]>;Young,
Brianna A<[e-mail]>
Subject: RE: [External] Buck Combined Cycle Station -Stormwater Permit Review
•N! EXTERNAL SENDER *** STOP. ASSESS.VERIFYH Were you •-
and spelling correct? Does the content make sense? Can you verify the sender? If suspicious report it, then do
not click links, open attachments or enter your ID or password.
Feb 21, 28, or March 6'. Do any of those work?
Additionally, if you can provide drainage area maps showing the current and proposed outfalls, in advance,that would
be helpful.
i

Regards,
Jerry W. Eplin, PE
Assistant Regional Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral, and Land Resources
Office: [phone]
Email: ierry.eplin(a�deg.nc.gov
Physical and Mailing Address:
610 E. Center Ave. Suite 301
Mooresville, NC 28115
E
NQM i i CAla.I" �
u.vuaar.ns a bw�rartmy+ruq uu�i�y Q ;
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties
From: Dishmon,Joyce Martin <[e-mail]>
Sent:Thursday, February 8, 2024 8:21 AM
To:Young, Brianna A<[e-mail]>; Eplin,Jerry W<[e-mail]. ov>
Cc: Wooten, Dale<[e-mail]>
Subject: [External] Buck Combined Cycle Station -Stormwater Permit Review
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hello Jerry,
Buck Combined Cycle is in the process of updating the renewal permit application NCS00554 and NCS000578. We would
like to schedule a site visit to review the site and the potential changes to the discharge outfalls. Can you provide some
dates that you would fit your schedule for a site visit?
Please let me know if you have questions or require additional information.
Thank you,
Joyce Dishmon
Duke Energy
Permitting&Compliance
864 South Edgewood Drive
Eden, NC 27288
Cell—336-394-5524
Office—336-623-0238
2

Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
3

Roy Cooper,Governor
■ ■■■
■■ 0 INC DEPARTMENT OF D.Reid Wilson,Secretary
E ■
■■u■■ NATURAL AND CULTURAL RESOURCES
■ ■■■ Misty Buchanan
Deputy Director,Natural Heritage Program
N CN H DE-24316
December 13, 2023
Brianna Young
NCDEQ
512 North Salisbury Street
Raleigh, NC 27604
RE: NCS000554; NCS000554
Dear Brianna Young:
The North Carolina Natural Heritage Program (NCNHP) appreciates the opportunity to provide
information about natural heritage resources for the project referenced above.
A query of the NCNHP database indicates that there are records for rare species, important natural
communities, natural areas, and/or conservation/managed areas within the proposed project
boundary. These results are presented in the attached 'Documented Occurrences' tables and map.
The attached 'Potential Occurrences' table summarizes rare species and natural communities that
have been documented within a one-mile radius of the property boundary. The proximity of these
records suggests that these natural heritage elements may potentially be present in the project area
if suitable habitat exists. Tables of natural areas and conservation/managed areas within a one-mile
radius of the project area, if any, are also included in this report.
If a Federally-listed species is documented within the project area or indicated within a one-mile
radius of the project area, the NCNHP recommends contacting the US Fish and Wildlife Service
(USFWS) for guidance. Contact information for USFWS offices in North Carolina is found here:
https://www.fws.gov/offices/Di rectory_/ListOffices.cfm?statecode=37.
Please note that natural heritage element data are maintained for the purposes of conservation
planning, project review, and scientific research, and are not intended for use as the primary criteria
for regulatory decisions. Information provided by the NCNHP database may not be published
without prior written notification to the NCNHP, and the NCNHP must be credited as an information
source in these publications. Maps of NCNHP data may not be redistributed without permission.
Also please note that the NC Natural Heritage Program may follow this letter with additional
correspondence if a Dedicated Nature Preserve, Registered Heritage Area, Land and Water Fund
easement, or an occurrence of a Federally-listed species is documented near the project area.
If you have questions regarding the information provided in this letter or need additional assistance,
please contact the NCNHP at natural.heritage�)dncr.nc.gov.
Sincerely,
NC Natural Heritage Program
DEPAR71MEN7 OF NATURAL AND CULTURAL RESOURCES
fl 121 W.JONES STREET,RALEIGH.NC 27603 • 16S1 MAIL SERVICE CENTER,RALEIGH.Nc 27699
OFC 919.707.9120 • FAX 919.707,9121

Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Intersecting the Project Area
NCS000554
Project No. NCS000554
December 13, 2023
NCNHDE-24316
No Element Occurrences are Documented within the Project Area
There are no documented element occurrences (of medium to very high accuracy) that intersect with the project area. Please note, however, that although the
NCNHP database does not show records for rare species within the project area, it does not necessarily mean that they are not present; it may simply mean that
the area has not been surveyed. The use of Natural Heritage Program data should not be substituted for actual field surveys if needed, particularly if the project
area contains suitable habitat for rare species. If rare species are found, the NCNHP would appreciate receiving this information so that we may update our
database.
No Natural Areas are Documented within the Project Area
Managed Areas Documented Within Project Area
Managed Area Name Owne
Three Rivers Land Trust Easement Three Rivers Land Trust Private
NOTE: If the proposed project intersects with a conservation/managed area, please contact the landowner directly for additional information. If the project intersects with a Dedicated Nature Preserve
(DNP), Registered Natural Heritage Area(RHA),or Federally-listed species, NCNHP staff may provide additional correspondence regarding the project.
Definitions and an explanation of status designations and codes can be found at https://ncnhde.natureserve.org/help. Data query generated on December 13,2023;source: NCNHP, Fall (October)2023.
Please resubmit your information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database.
Page 2 of 5

Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Within a One-mile Radius of the Project Area
NCS000554
Project No. NCS000554
December 13, 2023
NCNHDE-24316
Element Occurrences Documented Within a One-mile Radius of the Project Area
Taxonomic EO ID Scientific Namen Common Name Last Element Accuracy Federal State Global State
Group Observation Occurrence Status Status Rank Rank
A Date Rank �k-
Animal 24023 Waterbird Colony Waterbird Colony 2008-06-12 A 3-Medium --- --- GNR S3
Assemblage
Animal 17845 Waterbird Colony Waterbird Colony 2004 B 3-Medium --- --- GNR S3
Assemblage
Bird 36388 Haliaeetus Bald Eagle 2015-04 E 2-High Bald/Golden Threatened G5 S3B,S3
leucocephalus Eagle N
Protection
Act
Vascular Plant 14621 Acmispon helleri Carolina Birdfoot- 1949-09-09 H 3-Medium --- Threatened G5T3 S3
trefoil
Natural Areas Documented Within a One-mile Radius of the Project Area
Site Name Representational Rating Collective Rating
Leonard Road Slopes R5 (General) C4 (Moderate)
High Rock Reservoir Wetlands R5 (General) C5 (General)
Managed Areas Documented Within a One-mile Radius of the Project Area
Managed Area Name wner Owner Typ
Davidson County - Yadkin River Park Davidson County Local Government
Davidson County Open Space Davidson County Local Government
NC Department of Transportation Mitigation Site NC Department of Transportation State
Yadkin River Game Land NC Wildlife Resources Commission State
Yadkin River Game Land NC Wildlife Resources Commission State
NC Land and Water Fund Conservation Agreement NC DNCR, INC Land and Water Fund State
NC Land and Water Fund Project NC DNCR, INC Land and Water Fund State
NC Agricultural Development and Farmland NC Department of Agriculture State
Preservation Trust Fund Easement
Three Rivers Land Trust Easement Three Rivers Land Trust Private
Three Rivers Land Trust Easement Three Rivers Land Trust Private
Three Rivers Land Trust Easement Three Rivers Land Trust Private
Three Rivers Land Trust Easement Three Rivers Land Trust Private
Page 3 of 5

Definitions and an explanation of status designations and codes can be found at https://ncnhde.natureserve.org/help. Data query generated on December 13,2023;source: NCNHP, Fall (October)2023.
Please resubmit your information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database.
Page 4 of 5

DUKE Duke Energy
Buck Combined Cycle
ENERGY, 1385 Dukeville Road
Salisbury, NC 282146
RE�Ce/]y eD °.
APR 10 2023
March 22, 2023 DEMLR,"" Water Program
Ms. Brianna Young
NC DEMLR Stormwater Program
1612 Mail Service Center
Raleigh,NC 27699-1612
Subject: Duke Energy Carolinas, LLC.
Buck Steam Station and Buck Combined Cycle
NPDES Industrial Stormwater Permits NCS000578 and NCS000554
NPDES Form 2F Composite Sampling Results
Dear Ms. Young:
Duke Energy Carolinas, LLC is submitting herewith, updated EPA form 217's with the required composite
sampling data for Outfalls SWOOICC and SWO075, as required by the renewal process for stormwater permits
NCS000578 and NCS000554. Composite data was taken on December 15, 2022; however, the analytical results
were not available prior to the required submittal date of the renewal application.
Attached are the updated EPA form 2F's for Outfall SWOOICC and Outfall SW075.
Should you have any questions please contact Mr. Steve Cahoon at [e-mail] or
at(919)-546-7457 or Mr. Dale Wooten at [e-mail] or(704)-630-3086.
-I certify, under penalty of law, that this document and all attachments were prepared under my direction
or supervision in accordance with a system designed to assure that qualiftedpersonnelproperly gather and
evaluate the information submitted Based on 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,
K is Eisenrieth
General Manager
Buck Combined Cycle
Attachments:
Form 2F Outfall 001 CC
Form 2F Outfall 075
Mailed by LISPS: 7019 0140 0001 0794 0692
Return Receipt USPS: 9590 9402 5350 9154 1987 36

United States Office of Water EPA Form 3510-2F
Environmental Protection Agency Washington,D.C. Revised March 2019
Water Permits Division
I' ApplicationEPA Form 2F
Stormwater Discharges
Associated with Industrial
Activity
NPDES Permitting Program
Note: Complete this form and Form 1 if you are a new or existing facility whose discharge is composed
entirely of stormwater associated with industrial activity, excluding discharges from construction
activity under 40 CFR 122.26(b)(14)(x)or(b)(15). If your discharge is composed of stormwater and
non-stormwater, you must complete Forms 1 and 2F,and you must complete Form 2C,21), or 2E, as
appropriate. See the"Instructions" inside for further details.

Paperwork Reduction Act Notice
The U.S. Environmental Protection Agency estimates the average burden to collect and complete
Form 2F to be 28.1 hours. The estimate includes time for reviewing instructions, searching existing data
sources, gathering and maintaining the needed data,and completing and reviewing the collection of
information. Send comments about the burden estimate or any other aspect of this collection of
information, including suggestions for reducing the burden, to the Chief, Information Policy Branch
(PM-223), U.S. Environmental Protection Agency, 1200 Pennsylvania Avenue,NW, Washington, DC
20460, and to the Office of Information and Regulatory Affairs, Office of Management and Budget,
725 17'h Street,NW, Washington, DC 20503, marked"Attention: Desk Officer for EPA."

FORM 2F—INSTRUCTIONS
General Instructions Where to File Your Completed Form
Who Must Complete Form 2F? Submit your completed application package(Forms 1 and 2F plus
You must complete Form 2F if you answered"Yes"to Item 1.2.5 on any other applicable forms)to your NPDES permitting authority.
Form 1-4hat is,you are a new or existing facility and your Consult Exhibit 1-1 of Form 1's"General Instructions"to identify
discharge is composed entirely of stormwater associated with your NPDES permitting authority.
industrial activity(excluding discharges from construction activity Public Availability of Submitted Information
under 40 CFR 122.26(b)(14)(x)or(b)(15))orcomposed of The U.S.Environmental Protection Agency(EPA)will make
stormwater and non-stormwater and are seeking coverage under information from NPDES permit application forms available to the
an individual National Pollutant Discharge Elimination System
(NPDES)permit.Note that applicants in the latter category must public for inspection and copying upon request.You may not claim
also complete Forms 2C,2D,or 2E,as applicable.See inset any information on Form 2F(or related attachments)as confidential.
below. You may make a claim of confidentiality for any information that you
submit to EPA that goes beyond the information required by Form
Notes 2F.Note that NPDES permitting authorities will deny claims for
• Form 2F must be completed by any operator of treating any effluent data(estimated or actual)as confidential.If you
a facility that discharges stormwater associated do not assert a claim of confidentiality at the time you submit your
with industrial activity or the operator of any information to the NPDES permitting authority,EPA may make the
stormwater discharger that EPA is evaluating for information available to the public without further notice to you.EPA
designation as a significant contributor of will handle claims of confidentiality in accordance with the Agency's
pollutants to waters of the United States,or as business confidentiality regulations in Part 2 of Title 40 of the Code
contributing to a violation of a water quality of Federal Regulations(CFR),
standard. Completion of Forms
• For discharges composed entirely of Print or type in the specified areas only.If you do not have enough
stormwater,the operator must complete space on the form to answer a question,you may continue on
Form 2F in conjunction with Form 1. additional sheets,as necessary,using a format consistent with the
• For discharges of stormwater combined with form.
process wastewater,the operator must Provide your EPA Identification Number from the Facility Registry
complete and submit Form 2F,Form 1,and
Form 2C.Process wastewater is water that Service,NPDES permit number,and facility name at the top of each
comes into direct contact with or results from page of Form 2F and any attachments.If your facility is new(i.e.,
the production or use of any raw material, not yet constructed),write or type"New Facility"in the space
intermediate product,finished product, provided for the EPA Identification Number an NPDES permit
byproduct,waste product,or wastewater. number.If you do not know your EPA Identification Number,contact
your NPDES permitting authority.See Exhibit 1-1 of Form 1's
• For discharges of stormwater combined with "General Instructions"for contact information.Additionally,for
nonprooess wastewater,the operator must Tables A through D,provide the applicable outfall number at the top
complete Form 2F,Form 1,and Form 2E. of each page.
Nonprooess wastewater includes noncontact
cooling water and sanitary wastes that are not Do not leave any response areas blank unless the form directs you
regulated by effluent guidelines,except to skip them.If the form directs you to respond to an item that does
discharges by educational,medical,or not apply to your facility or activity,enter"NA"for"not applicable"to
commercial chemical laboratories. show that you considered the item and determined a response was
• For new discharges of stormwater associated not necessary for your facility.
with industrial activity that will be combined with The NPDES permitting authority will consider your application
other new non-stormwater discharges,the complete when it and any supplementary material are received and
operator must submit Form 2F,Form 1,and completed according to the authority's satisfaction.The NPDES
Form 2D. permitting authority will judge the completeness of any application
independently of the status of any other permit application or permit
for the same facility or activity,
Definitions
The legal definitions of all key terms used in these instructions and
Form 2F are in the"Glossary"at the end of the"General
Instructions"in Form 1.
2F-1

FORM 21F—INSTRUCTIONS CONTINUED
Line-by-Line Instructions Section 3.Site Drainage Map
Section 1.Outfall Location Item 3.1 Attach a site drainage map showing the topography of the
Item 1.1. Identify each of the facility's outfalls by number. For each facility.If a topographic map is unavailable,you may provide an
outfall,specify the latitude and longitude to the nearest 15 seconds outline of drainage areas served by the outfall(s)covered in the
and name of the receiving water. Latitude and longitude application.The site map must include the following information:
coordinates may be obtained in a variety of ways,including use of Each of its drainage and discharge structures.
hand held devices(e.g.,a GPS enabled smartphone),internet . The drainage area of each stormwater outfall.
mapping tools(e.g.,
https:llmynasadata.larc.nasa.gov/latitudelongitude-finder/), Paved areas and buildings within the drainage area of each
geographic information systems(e.g.,ArcView),or paper maps stormwater outfall;each past or present area used for outdoor
from trusted sources(e.g.,U.S. Geological Survey or USGS).The storage or disposal of significant materials;each existing
location of each outfall(i.e.,where the coordinates are collected) structural control measure to reduce pollutants in stormwater
shall be the location where collected and concentrated stormwater runoff;materials loading and access areas;and areas where
flows are discharged from the facility such that the first receiving pesticides, herbicides,soil conditioners,and fertilizers are
water body into which the discharge flows,either directly or applied.
through a separate storm sewer system,is a water of the United Each hazardous waste treatment,storage,or disposal facility
States. If you need further guidance in responding to Item 1.1,refer (including each area not required to have a Resource
to http://www.epa.gov/geospatial/latitudelonqqude-data-standard. Conservation and Recovery Act permit and is used for
Note: In EPA's stormwater permits,'outfalls'are referred to as accumulating hazardous waste for less than 90 days under
40 CFR 262.34).
"discharge points."
• Each well where fluids from the facility are injected
Note that space has been provided on the form for six outfalls. If underground.
you have more than this number,type your information on a
separate sheet of paper in a format similar to that of the form. Springs and other surface water bodies that receive stormwater
Make sure you note the EPA Identification Number,NPDES permit discharges from the facility.
number,and facility name at the top of the page and indicate the When you have completed and attached your site map to Form 2F,
specific item of the form to which you are responding—Item 1.1 in answer"Yes"to Item 3.1.
this case.In other sections of the form,you will be asked to provide Section 4.Pollutant Sources
information by outfall number(Sections 2,4,5,and 7). Item 4.1.List all outfalls discharging stormwater. Provide an
Section 2.Improvements estimate of the impervious surface area drained by the outfall.
Item 2.1.Indicate if you are required by any federal,state,or local Specify units of measure.(impervious surfaces are surfaces where
authority to meet an implementation schedule for constructing, stormwater runs off at rates significantly higher than background
upgrading,or operating wastewater treatment equipment or rates—e.g.,predevelopment levels.They include paved areas,
practices or any other environmental programs that could affect the building roofs, parking lots,and roadways.)
discharges described in this application.The requirements include, Provide an estimate of the total surface area(impervious and
but are not limited to,permit conditions,administrative enforcement pervious areas)drained by each outfall(within a mile radius of the
orders,enforcement compliance schedule letters,stipulations, facility).You may use the site map developed under Item 3.1 to
court orders,and grant or loan conditions. If yes,continue to item estimate the total area drained by each outfall.For areas under
2.2. If no,skip to Section 3. 5 acres,consult your NPDES permitting authority to determine
Item 2.2.Briefly identify and describe each applicable project(e.g., whether the area should be reported to the nearest tenth of an acre
consent decree,enforcement order,or permit condition).For each or nearest quarter of an acre.
condition,specify the affected outfall number(s),the source(s)of Item 4.2.Provide a narrative description of the following:
the discharge,the required final compliance date,and the
projected final compliance date. Significant materials that in three years prior to the submittal of
this application have been treated,stored,or disposed of in a
Item 2.3.OPTIONAL ITEM. Indicate if you have attached any manner to allow exposure to stormwater.
sheets describing any additional water pollution control programs • Method of treatment,storage,or disposal of such materials.
(or other environmental projects that could affect your discharges)
that you may now have underway or planned. If you attach 0 Materials management practices employed,in the three years
additional sheets,indicate in the attachment whether each program prior to the submittal of this application,to minimize contact by
is actually underway or is planned,and indicate your actual or these materials with stormwater runoff.
planned schedule for construction. Be sure to note your EPA a Materials loading and access areas.
Identification Number,NPDES permit number,and facility name at The location, manner,and frequency in which pesticides,
the top of any attached pages, herbicides,soil conditioners,and fertilizers are applied.
You should identify your significant materials by chemical name,
2 F-2

ti
FORM 2F—INSTRUCTIONS CONTINUED
form(e.g.,powder,liquid,etc.),and type of container or treatment Tables A,B,C,and D
unit.Indicate any materials treated,stored,or disposed of Items 7.2 to 7.17.These items require you to collect and report data
together.The term"significant materials"includes,but is not in Tables A through D,at the end of Form 2F,for the parameters and
limited to:raw materials;fuels;materials such as solvents, pollutants listed in Exhibits 2F-2,2F-3,and 2F-4(at the end of the
detergents,and plastic pellets;finished materials such as metallic instructions).The instructions for completing Tables A through D are
products;raw materials used in food processing or production; table-specific,as are the criteria for determining who should
hazardous substances designated under Section 101(14)of the complete them.
Comprehensive Environmental Response,Compensation,and
Liability Act;any chemical the facility is required to report pursuant Important note:Read the"General Instructions for Reporting,
to Section 313 of Title III of the Superfund Amendments and Sampling,and Analysis"below before completing Items 7.2 to 7.17.
Reauthorization Act;and fertilizers;pesticides;and waste products Item 7.2 and Table A.All applicants must complete Table A. If the
such as ashes,slag,and sludge that have the potential to be discharge is an existing discharge and your discharge is composed
released with stormwater discharges. exclusively of stormwater(i.e.,no process or nonprocess
Item 4.3.For each ouffall,list the location and type of existing wastewater)then you only need to provide monitoring data for oil and
structural and non-structural control measure(s)to reduce grease,total phosphorus,total Kjeldahl nitrogen,and total nitrogen.
pollutants in stormwater runoff.Structural controls include Indicate"NA"for"not applicable"in the columns for all other
structures that enclose materials handling or storage areas; parameters.Answer"Yes"to Item 7.2 once you have completed this
structures that cover materials;and berms,dikes,or diversion task.
ditches around manufacturing,production,storage,or treatment Item 7.3 and Table B.Indicate whether the facility is subject to an
units and retention ponds.Spill prevention plans,employee effluent limitations guideline(ELG)(see 40 CFR Subchapter N to
training,visual inspections,preventive maintenance,and determine which pollutants are limited in ELGs)or if the facility is
housekeeping measures are examples of non-structural controls. subject to effluent limitations in an NPDES permit for its process
wastewater or stormwater(if the facility is operating under an existing
Describe the treatment,including the schedule and type of NPDES permit).If yes,continue to Item 7.4.If no,skip to Item 7.5.
maintenance activities performed,and the ultimate disposal of any
solid or fluid wastes other than by discharge, For each structural Note:Stormwater discharges from certain industrial sources or
control identified,indicate the type of treatment the stormwater activities have specific ELGs for which they must comply.These
receives using the codes in Exhibit 2F-1,at the end of the stormwater-specific ELGs include:
instructions.For each non-structural control identified,indicate Regulated Discharge 40 CFR Section
"Not Applicable"in the"Codes from Exhibit 2F-1"Column. Discharges resulting from spraydown or intentional Part 429,Subpart I
Section 5.Non-Stormwater Discharges wetting of logs at wet deck storage areas
Item 5.1.Provide a certification that all ouffalls that should contain Runoff from phosphate fertilizer manufacturing facilities Part 418,Subpart A
that comes into contact with any raw materials,finished
stormwater discharges associated with industrial activity have product,byproducts or waste products(SIC 2874)
been tested or evaluated for the presence of non-stormwater Runoff from asphalt emulsion facilities Part 443,Subpart A
discharges.Tests for such non-stormwater discharges can include Runoff from material storage piles at cement Part 411,Subpart C
smoke tests,fluorometric dye tests,analysis of accurate manufacturing facilities
schematics,and others. Mine dewatering discharges at crushed stone, Part 436,Subparts B,
construction sand and gravel,or industrial sand mining C,and D
Item 5.2.Include a description of the method used,the date of any facilities
testing,and the onsite drainage points that were directly observed Runoff from hazardous waste and non-hazardous waste Part 445,Subparts A
during a test used to support the certification in Item 5.1.All non- landfills and B
stormwater discharges must be identifed in a Form 2C,2D,or 2E. Runoff from coal storage piles at steam electric Part 423
See"Who Must Complete Form 2F?"above for more information. generating facilities
Section 6.Significant Leaks or Spills Runoff containing urea from airfield pavement deicing at Part 449
existing and new primary airports with 1,000 or more
Item 6.1.Describe any significant leaks or spills of toxic or annual non-propeller aircraft departures
hazardous pollutants at the facility within the three years prior to Item 7.4.In Table B,list all pollutants that are limited in an ELG to
the submittal of this application.Include the approximate date and which the facility is subject and all pollutants listed in the facility's
location of the spill or leak and the type and amount of material NPDES permit for its process wastewater(if the facility is operating
released. under an existing NPDES permit)and provide quantitative data for
Section 7.Discharge Information each pollutant(provide actual data for existing dischargers and
Item 7.1.Answer whether you are a new source or new discharge, estimated data for new sources and new dischargers). If a pollutant
Contact your NPDES permitting authority to determine if you are a in Exhibits 2F-2 or 2F-3 is indirectly limited by an ELG through an
new source or new discharge. indicator(e.g.,use of total suspended solids as an indicator to
control the discharge of iron and aluminum),you must provide data
for the pollutant in Table B.Complete one table for each outfall.
Answer"Yes"to Item 7.4 once you have completed this task.
2 F-3

FORM 2F—INSTRUCTIONS CONTINUED
Item 7.5 and Table C.Table C requires you to address the Item 7.11. Provide quantitative data in Table C for those pollutants
pollutants in Exhibits 2F-2,2F-3,and 2F-4 for each outfall. in Exhibit 2F-3 that you expect to be discharged in concentrations
Pollutants in each of these exhibits are addressed differently. of 10 ppb or greater(provide actual data for existing dischargers
Indicate whether you know or have reason to believe any pollutants and estimated data for new sources and new dischargers).Answer
in Exhibit 2F-2 are present in the discharge. If yes,continue to Item "Yes"to Item 7.11 once you have completed this task.
7.6. If no,skip to Item 7.7. Item 7.12.Indicate whether you expect acrolein, acrylonitrile,2,4-
dinitrophenol,or 2-methyl-4,6-dinitrophenol to be discharged in
Item 7.6.For each outfall,list all pollutants in Exhibit 2F-2 that you concentrations of 100 ppb or greater. If yes,continue to Item 7.13.
know or have reason to believe are present in the discharge in If no,skip to Item 7.14.
Table C(except pollutants previously listed in Table B that are
limited directly or indirectly by an ELG)and either report quantitative Item 7.13.Provide quantitative data in Table C for the pollutants
data or briefly describe the reasons the pollutant is expected to be identified in Item 7.12 that you expect to be discharged in
discharged.Answer"Yes"to Item 7.6 once you have completed this concentrations of 100 ppb or greater(provide actual data for
task. existing dischargers and estimated data for new sources and new
Item 7.7.This item asks if you qualify as a"small business."If so, dischargers).Answer"Yes"to Item 7.13 once you have completedthis task.
you are exempt from the reporting requirements for the organic toxic
pollutants listed in Exhibit 2F-3. Item 7.14.For any pollutants you expect to be present in the
You can qualify as a small business in two ways:(1)If your facility is discharge at concentrations less than 10 ppb(or less than 100 ppb
a coal mine and if your probable total annual production is less than for the above four pollutants),either submit quantitative data or
100,000 tons per year,you may submit past production data or briefly describe the reasons the pollutant is expected to be
estimated future production(such as a schedule of estimated total discharged in Table C.Answer"Yes"to Item 7.14 once you have
production under 30 CFR 795.14(c))instead of conducting analyses completed this task.
for the organic toxic pollutants;(2)If your facility is not a coal mine Item 7.15.Indicate whether you know or have reason to believe
and if your gross total annual sales for the most recent three years any pollutants in Exhibit 21`4 are present in the discharge. If yes,
average less than$100,000 per year(in second quarter 1980 continue to Item 7.16. If no,skip to Item 7.17.
dollars),you may submit sales data for those years instead of Item 7.16.For each outfall,list any pollutant in Exhibit 217-4 that
conducting analyses for the organic toxic pollutants.The production you know or believe to be present in the discharge in Table C and
or sales data must be for the facility that is the source of the explain why you believe it to be present. No analysis is required,
discharge.The data should not be limited to production or sales for but if you have analytical data,you must report it.Answer"Yes"to
the process or processes that contribute to the discharge,unless Item 7,16 once you have completed this task,
those are the only processes at your facility. For sales data, in
situations involving intra-corporate transfer of goods and services, Note:Under40 CFR 117.12(a)(2),certain discharges of hazardous
the transfer price per unit should approximate market prices for substances(listed in Exhibit 2F-5)may be exempted from the requirements of
those goods and services as closely as possible. Sales figures for CWA Section 311.which establishes reporting requirements,civil penalties,
years after 1980 should be indexed to the second quarter of 1980 by and liability for cleanup costs for spills of oil and hazardous substances.A
using the gross national product price deflator(second quarter of discharge of a particular substance can be exempted if the origin,source,and
1980=100).This index is available online from the U.S. Department amount of the discharged substances are identified in the NPDES permit
application or in the permit,if the permit contains a requirement for treatment
of Commerce,Bureau of Economic Analysis at of the discharge,and if the treatment is in place.If you would like to apply for
http:Ilwww.bea.govinatlonallndf/SNTables.pdf, an exemption from the requirements of CWA Section 311,attach additional
sheets of paper to your application,setting forth the following information:
If you qualify as a small business according to the criteria above,
answer"Yes"to Item 7.7 and ski to Item 7.18.Otherwise,answer 1. The substance and the amount of each substance that might be
p discharged.
"No"and Continue to Item 7.8. 2. The origin and source of the discharge of the substance.
Item 7.8.Indicate whether you know or have reason to believe any 3. The treatment to be provided for the discharge by:
pollutants in Exhibit 2F-3 are present in the discharge. If yes, a. An onsite treatment system separate from any treatment system
treating your normal discharge;
continue to Item 7.9. If no,Skip t0 Item 7.10. b. A treatment system designed to treat your normal discharge and that
Item 7.9.For each outfall,list all pollutants in Exhibit 2F-3 that you is additionally capable of treating the amount of the substance
identified under paragraph 1 above;or
know or have reason to believe are present in the discharge in c. Any combination of the above.
Table C(except pollutants previously listed in Table B).Answer
"Yes"to Item 7.9 once you have completed this task. See 40 CFR 117.12(a)(2)and(c)or contact your NPDES permitting authority
for further information on exclusions from CWA Section 311.
item 7.10.Indicate whether you expect any of the pollutants from
Exhibit 2F-3 to be discharged in concentrations of 10 parts per Item 7.17 and Table D.Provide data for the storm event(s)that
billion(ppb)or greater. If yes,continue to Item 7.11. If no,skip to resulted in the maximum daily discharges for the flow weighted
Item 7.12. composite sample in Table D. If sampling is conducted during more
than one storm event,you only need to report the information
2F-4

FORD 217—INSTRUCTIONS CONTINUED
requested on Table D for the storm event(s)that resulted in any Section 10.Checklist and Certification Statement
maximum pollutant concentration reported on Tables A through C. Item 10.1.Review the checklist provided on the application.In
Provide flow measurements or estimates of the flow rate,as well as Column 1,mark the sections of Form 2F that you have completed
the total amount of discharge for the storm event(s)sampled,the and are submitting with your application.For each section in
method of flow measurement,or estimation.Provide the data and Column 2,indicate whether you are submitting attachments.
duration of the storm event(s)sampled,rainfall measurements,or Item 10.2.The Clean Water Act(CWA)provides for severe
estimates of the storm event that generated the sampled runoff and penalties for submitting false information on this application form.
the duration between the storm event sampled and the end of the Section 309(c)(2)of the CWA provides that,"Any person who
previous measurable(greater than 0.1 inch rainfall)storm event. knowingly makes any false material statement,representation,or
Answer"Yes"to Item 7.17 once you have completed this task. certification in any application, ,..shall upon conviction be punished
Used or Manufactured Toxics by a fine of not more than$10,000 or by imprisonment for not more
Item 7.18.Review Exhibits 2F-2 through 2F-4 and determine if you than six months or both."
currently use or manufacture any of the pollutants listed as FEDERAL REGULATIONS AT 40 CFR 122.22 REQUIRE THIS
intermediate or final products or byproducts.If so,answer"Yes." APPLICATION TO BE SIGNED AS FOLLOWS:
You should also answer"Yes"if you know or have reason to
believe that 2,3,7,8-tetrachloro-dibenzo-p-dioxin(TCDD)is A. For a corporation,by a responsible corporate officer.For the
discharged or if you use or manufacture 2,4,5-tdchlorphenoxy purpose of this section,a responsible corporate officer means:
acetic acid(2,4,5-T);2-(2,4,5-tdchlorophenoxy)propanoic acid (1)a president,secretary,treasurer,or vice-president of the
(Silvex,2,4,5-TP);2-(2,4,5-tdchlorophenoxy)ethyl,2,2- corporation in charge of a principal business function,or any
dichloropropionate(Erbon);0,0-dimethyl 0-(2,4,5-trichlorphenyl) other person who performs similar policy-or decision-making
phosphorothioate(Ronnel);2,4,5-trichlorophenol(TCP);or functions for the corporation,or(2)the manager of one or
hexachlorophene(HCP).If your answer to Item 7.18 is"No,"skip to more manufacturing,production,or operating facilities,
Section 8. provided the manager is authorized to make management
decisions which govern the operation of the regulated facility
Item 7.19.List all of the toxic pollutants identified under Item 7.18, including having the explicit or implicit duty of making major
including TCDD. Note that the NPDES permitting authority may capital investment recommendations,and initiating and
waive or modify the requirement if you demonstrate that it would be directing other comprehensive measures to assure long term
unduly burdensome to identify each toxic pollutant and the NPDES environmental compliance with environmental laws and
permitting authority has adequate information to issue your permit. regulations;the manager can ensure that the necessary
You may not claim any information submitted in response to Item systems are established or actions taken to gather complete
7.18 as confidential;however,you do not have to distinguish and accurate information for permit application requirements;
between use or production of the pollutants or list the amounts. and where authority to sign documents has been assigned or
Section 8.Biological Toxicity Testing Data delegated to the manager in accordance with corporate
Item 8.1.Answer whether you know of or have reason to believe procedures.
that biological toxicity testing has been conducted of your B. For a partnership or sole proprietorship,by a general partner
wastewater treatment,including engineering reports or pilot plant or the proprietor,respectively.
studies.If no,skip to Section 9.Otherwise,continue. C. For a municipality,state,federal,or other public facility,by
Item 8.2.List any tests of which you are aware and their purposes. either a principal executive officer or ranking elected official.
For purposes of this section,a principal executive officer of a
Section 9.Contract Analysis Information federal agency includes:(1)The chief executive officer of the
Item 9.1.Indicate if any of the analyses performed in Section 7 agency,or(2)a senior executive officer having responsibility
were performed by a contract laboratory or consulting firm.If no, for the overall operations of a principal geographic unit of the
skip to Section 10.If yes,continue to Item 9.2. agency(e.g.,Regional Administrators of EPA).
Item 9.2.Provide the name,address,phone number,and pollutants END
analyzed by the laboratory or consulting firm(s)in the spaces Submit your completed Form 1,Form 2F,and
provided. all associated attachments
(and any other required NPDES application forms)
to your NPDES permitting authority.
2F-5

General Instructions for Reporting,Sampling,and Analysis
Important note:Read these instructions before completing Tables byproducts,and any previous analyses known to you of your
A through C and Section 7 of Form 2F. effluent or similar effluent.
General Items Sampling
Complete the applicable tables for each outfall at your facility. Be The collection of the samples for the reported analyses should be
sure to note the EPA Identification Number,NPDES permit supervised by a person experienced in performing sampling of
number,facility name,and applicable outfall number at the top of industrial wastewater or stormwater discharges.You may contact
each table page and any associated attachments. your NPDES permitting authority for detailed guidance on sampling
You may report some or all of the required data by attaching techniques and for answers to specific questions.See Exhibit 1-1 of
separate sheets of paper instead of completing Tables A through C Form 1 for contact information.Any specific requirements in the
for each of your outfalls so long as the sheets contain all of the analytical methods—for example,sample containers,sample
required information and are similar in format to Tables A through preservation,holding times,and the collection of duplicate
C.For example,you may be able to print a report in a compatible samples—must be followed.
format from the data system used in your gas chromatography/ The time when you sample should be representative of your normal
mass spectrometry(GC/MS)analysis completed under Table B. operation,to the extent feasible,with all processes that contribute
If you are an existing discharger,you are required to report actual wastewater in normal operation,and with your treatment system
quantitative data.See"Use of Historic Data"below for use of operating properly with no system upsets.Collect samples from the
historic data.If you are a new source or discharge,you may supply center of the flow channel,where turbulence is at a maximum,at a
estimated data along with the source of each estimate.If you have site specified in your present NPDES permit,or at any site adequate
quantitative data available,however,you must provide it.Base for the collection of a representative sample.
estimates on available,in-house or contractor engineering reports, Grab samples must be taken in the first 30 minutes of discharge(or
or any other studies performed on the proposed facility.Use the as soon thereafter as practicable)for pH,temperature,cyanide,total
following codes to report your source information in the"Source of phenols,residual chlorine,oil and grease,fecal ooliform(including
Information"column: E.coli)and enterococci(previously known as fecal streptococcus at
Data Source Code 40 CFR 122.26(d)(2)(iii)(A)(3)),and volatile organic compounds.
En ineerin reports 1 You are not required to analyze a flow-weighted composite for these
Actual data from pilot plants 1 parameters.
Estimates from other engineering 2 For all other pollutants,both a grab sample collected during the first
reports 30 minutes(or as soon thereafter as practicable)of the discharge
Data from other similar plants 3 and a flow-weighted composite sample must be analyzed.However,
Best professional estimates 4 a minimum of one grab sample may be taken for effluents from
Others 5 and specify on holding ponds or other impoundments with a retention period of
the table
greater than 24 hours.
No later than 24 months after your facility commences to
discharge,you must complete and submit sampling and analysis All samples must be collected from the discharge resulting from a
data for the pollutants and parameters in Tables A through C. storm event that is greater than 0.1 inches and at least 72 hours
However,you need not report results for tests you have already from the previously measurable(greater than 0.1 inch rainfall)storm
performed and reported under the discharge monitoring event.Where feasible,the variance in the duration of the event and
requirements of your NPDES permit. the total rainfall of the event should not exceed 50 percent from the
Table A requires you to report at least one analysis for each average or median rainfall event in that area.
pollutant listed.Tables B and C require you to report analytical data A grab sample must be taken during the first 30 minutes of the
in two ways.For some pollutants addressed in Tables B and C,if discharge(or as soon thereafter as practicable),and a flow-
you know or have reason to know that the pollutant is present in weighted composite must be taken for the entire event or for the first
your discharge,you may be required to list the pollutant and test three hours of the event.
(sample and analyze)and report the levels of the pollutants in your Grab and composite samples are defined as follows:
discharge.For all other pollutants addressed in Tables B and C,
you must list the pollutant if you know or have reason to know that Grab sample:An individual sample of at least 100 milliliters
the pollutant is present in the discharge,and either report collected during the first 30 minutes(or as soon thereafter as
quantitative data for the pollutant or briefly describe the reasons practicable)of the discharge.This sample is to be analyzed
the pollutant is expected to be discharged.(See Items 7.2 through separately from the composite sample.
7.17 of the instructions for completing Tables A through C.).Base Flow-weighted composite sample:A flow-weighted composite
your determination that a pollutant is/will be present in your sample may be taken with a continuous sampler that proportions the
discharge on your knowledge of the facility's raw materials, amount of sample collected with the flow rate or as a combination of
material management practices,maintenance chemicals,history of a minimum of three sample aliquots taken in each hour of discharge
spills and releases,intermediate and final products and
2F-6

General Instructions for Reporting,Sampling,and Analysis Continued
for the entire event or for the first three hours of the event,with All reporting of values for metals must be in terms of"total
each aliquot being at least 100 milliliters and collected with a recoverable metal"unless:
minimum period of 15 minutes between aliquot collections.The 0 An applicable,promulgated ELG specifies the limitation for the
composite must be flow proportional;the time interval between metal in dissolved,valent,or total form;
either each aliquot or the volume of each aliquot must be
proportional to either the stream(effluent)flow at the time of • All approved analytical methods for the metal inherently
sampling or the total stream(effluent)flow since the collection of measure only its dissolved form(e.g.,hexavalent chromium);
the previous aliquot.Aliquots may be collected manually or or
automatically.Where GC/MS volatile organic analysis is required, . The NPDES permitting authority has determined that in
aliquots must be combined in the laboratory immediately before establishing case-by-case limitations it is necessary to express
analysis.Only one analysis for the composite sample is required. the limitations of the metal in dissolved,valent,or total form to
Use of Historical Data carry out the provisions of the CWA.
Existing data may be used,if available,in lieu of sampling If you measure only one grab sample and one flow-weighted
conducted solely for the purposes of this application,provided it is composite sample for a given outfall,complete only the"Maximum
representative of the present discharge and was collected within Daily Discharge"columns in the tables and enter"1"in the"Number
3 years of the application due date.If you sample for a listed of Storm Events Sampled"column.The NPDES permitting authority
pollutant on a monthly or more frequent basis,summarize the data may require you to conduct additional analyses to further
collected within one year of the application for the pollutant(s)at characterize your discharges.
issue. If you measure more than one value for a grab sample or a flow-
Among the factors that would cause the data to be weighted composite sample for a given outfall and those values are
unrepresentative are significant changes in production level; representative of your discharge,you must report them.You must
changes in raw materials,processes,or final products;and describe your method of testing and analysis.
changes in stormwater treatment.The NPDES permitting authority The"Average Daily Discharge"column on Tables A to C is not
may request additional information,including current quantitative compulsory but should be filled out if data are available.To
data,if they determine it to be necessary to assess your complete the"Average Daily Discharge"column,determine the
discharges.The NPDES permitting authority may allow or establish average of all values within the last year and report the
appropriate site-specific sampling procedures or requirements concentration and mass.Report the total number of storm events
including sampling locations,the season in which the sampling sampled under the"Number of Storm Events Sampled"column.
takes place,the minimum duration between the previous
measurable storm event and the storm event sampled,the Substantially Identical Outfalls
minimum or maximum level of precipitation required for an If you have two or more substantially identical outfalls,you may
appropriate storm event,the form of precipitation sampled(snow request permission from your NPDES permitting authority to sample
melt or rainfall),protocols for collecting samples under 40 CFR 1361 and analyze only one outfall and submit the results of the analysis
and additional time for submitting data on a case-by-case basis. for all substantially identical outfalls.If your request is granted,
Reporting submit the following information on a separate sheet attached to the
Report sampling results for all pollutants in Tables A through C as application form:the identity of the outfall you did test and an
concentration and mass,with the exception of flow,temperature, explanation of how it is substantially identical to the outfall(s)that
pH,color,and fecal coliform organisms. you did not test.
Flow,temperature,pH,color,and fecal coliform organisms must Analysis
be reported as million gallons per day(mgd),degrees Celsius Except as specified below,all required quantitative data shall be
(°C),standard units,color units,and most probable number per collected in accordance with sufficiently sensitive analytical methods
100 milliliters(MPN1100 mL),respectively.Use the following approved under 40 CFR 136 or required under 40 CFR chapter I,
abbreviations in the columns requiring'units"in Tables A through subchapter N or 0.A method is"sufficiently sensitive"when:
C.
• The method minimum level(ML)is at or below the level of the
Concentration Mass applicable water quality criterion for the measured pollutant or
m=parts per million Ibs=pounds pollutant parameter.
IL=milligrams per liter ton=tons(English tons The method ML is above the water quality criterion,but the
b=parts per billion mq=milli rams amount of the pollutant or pollutant parameter in the facility's
IL=mia rams per liter g=grams discharge is high enough that the method detects and
MPN most probable number per kq=kilograms quantifies the level of the pollutant or pollutant parameter in the
100 milliliters T=tonnes metric tons discharge.
2F-7

General Instructions for Reporting,Sampling,and Analysis Continued
• The method has the lowest ML of the analytical methods select a different method from the remaining EPA-approved
approved under 40 CFR 136 or required under 40 CFR methods that is sufficiently sensitive consistent with 40 CFR
chapter I,subchapter N or 0,for the measured pollutant or 122.21(e)(3)(i).Where no other EPA-approved methods exist,you
pollutant parameter. must select a method consistent with 40 CFR 122.21(e)(3)(ii).
Consistent with 40 CFR 136,you may provide matrix-or sample- When there is no analytical method that has been approved under
specific MLs rather than the published levels.Further,where you 40 CFR 136;required under 40 CFR chapter I,subchapter N or 0,
can demonstrate that,despite a good faith effort to use a method and is not otherwise required by the NPDES permitting authority,
that would otherwise meet the definition of"sufficiently sensitive," you may use any suitable method but shall provide a description of
the analytical results are not consistent with the quality assurance the method.When selecting a suitable method,other factors such
(QA)/quality control(QC)specifications for that method,then the as a method's precision,accuracy,or resolution,may be considered
NPDES permitting authority may determine that the method is not when assessing the performance of the method.
performing adequately and the NPDES permitting authority should
2F-8

o
Exhibit 217-1.Codes for Treatment Units and Disposal of Wastes Not Discharged
1. PHYSICAL TREATMENT PROCESSES
1—A.................Ammonia stripping 1—M................Grit removal
1-13.................Dialysis 1—N................Microstraining
1—C................Diatomaceous earth filtration 1-0................Mixing
1—D................Distillation 1—P................Moving bed filters
1—E.................Electrodialysis 1—Q................Multimedia filtration
1—F.................Evaporation 1—R................Rapid sand filtration
1—G................Flocculation 1—S................Reverse osmosis(hyperfiltration)
1—H................Flotation 1—T................Screening
1-1..................Foam fractionation 1—U................Sedimentation(settling)
1—J.................Freezing 1—V................Slow sand filtration
1—K.................Gas-phase separation 1—W...............Solvent extraction
1—L.................Grinding(comminutors) 1—X................Sorption
2. CHEMICAL TREATMENT PROCESSES
2—A.................Carbon adsorption 2—G................Disinfection(ozone)
2-13.................Chemical oxidation 2—H................Disinfection(other)
2—C................Chemical precipitation 2-1..................Electrochemical treatment
2—D................Coagulation 2—J.................Ion exchange
2—E.................Dechlorination 2—K................Neutralization
2—F.................Disinfection(chlorine) 2—L.................Reduction
3. BIOLOGICAL TREATMENT PROCESSES
3—A.................Activated sludge 3—E................Pre-aeration
3-13.................Aerated lagoons 3—F................Spray irrigationlland application
3—C................Anaerobic treatment 3—G................Stabilization ponds
3—D................Nitrification—denitrification 3—H................Trickling filtration
4. WASTEWATER DISPOSAL PROCESSES
4—A.................Discharge to surface Water 4—C................Reuseirecycle of treated effluent
4-13.................Ocean discharge through outfall 4—D................Underground injection
5. SLUDGE TREATMENT AND DISPOSAL PROCESSES
5—A.................Aerobic digestion 5—M................Heat drying
5-13.................Anaerobic digestion 5—N................Heat treatment
5—C................Belt filtration 5-0................Incineration
5-1)................Centrifugation 5—P................Land application
5—E.................Chemical conditioning 5—Q................Landfill
5—F.................Chlorine treatment 5—R................Pressure filtration
5—G................Composting 5—S................Pyrolysis
5—H................Drying beds 5—T................Sludge lagoons
5-1..................Elutriation 5—U................Vacuum filtration
5—J.................Flotation thickening 5—V................Vibration
5—K.................Freezing 5—W...............Wet oxidation
5—L.................Gravity thickening
2F-9

Exhibit 2F-2.Conventional and Nonconventional Pollutants(40 CFR 122.21,Appendix D,Table IV)
Bromide
Chlorine,total residual
Color
Fecal coliform
Fluoride
Nitrate-nitrite
Nitrogen,total organic(as N)
Oil and grease
Phosphorus(as P),total
Radioactivity(as alpha,total;beta,total;radium,total;and radium 226,total)
Sulfate(as SO4)
Sulfide(as S)
Sulfite(as SO3)
Surfactants
Aluminum,total
Barium,total
Boron,total
Cobalt,total
Iron,total
Magnesium,total
Molybdenum,total
Manganese,total
Tin,total
Titanium,total
2F-10

+ L
Exhibit 2F-3.Toxic Pollutants(40 CFR 122.21,Appendix D,Tables II and III)
Toxic Pollutants and Total Phenol
Antimony,total Copper,total Silver,total
Arsenic,total Lead,total Thallium,total
Beryllium,total Mercury,total Zinc,total
Cadmium,total Nickel,total Cyanide,total
Chromium,total Selenium,total Phenols,total
GCIMS Fraction—Volatile Compounds
Acrolein Dichlorobromomethane 1,1,2,2-tetrachloroethane
Acrylonitrile 1,1-dichloroethane Tetrachloroethylene
Benzene 1,2-dichloroethane Toluene
Bromoform 1,1-dichloroethylene 1,2-trans-dichloroethylene
Carbon tetrachloride 1,2-dichloropropane 1,1,1-tdchlorcethane
Chlorobenzene 1,3-dichloropropylene 1,1,2-tichloroethane
Chlorodibromomethane Ethylbenzene Trichloroethylene
Chlomethane Methyl bromide Vinyl chloride
2-Chloroethylvinyl ether Methyl chloride
Chloroform Methylene chloride
GCIMS Fraction—Acid Compounds
2-chlorophenol 2,4-dinitrophenol Pentachlorophenol
2,4-dichlorophenol 2-nitrophenol Phenol
2,4-dimethylphenol 4-nitrophenol 2,4,6-tdchlorophenol
4,6-dinitm-o-cresol P-chloro-m-cresol
GCIMS Fraction—Base/Neutral Compounds
Acenaphthene 4-chlorophenyl phenyl ether Hexachlorobenzene
Acenaphthylene Chrysene Hexachlorobutadiene
Anthracene Dibenzo(a,h)anthracene Hexachlorocyclopentadiene
Benzidine 1,2-dichlorobenzene Hexachloroethane
Benzo(a)anthracene 1,3-dichlorobenzene Indeno(1,2,3-cd)pyrene
Benzo(a)pyrene 1,4-dichlorobenzene Isophorone
3,4-benzofluoranthene 3,3-dichlorobenzidine Naphthalene
Benzo(ghi)perylene Diethyl phthalate Nitrobenzene
Benzo(k)fluoranthene Dimethyl phthalate N-nitrosodimethylamine
Bis(2-chloroethoxy)methane Di-n-butyl phthalate N-nitrosodi-n-propylamine
Bis(2-chloroethyl)ether 2,4-dinitrotoluene N-nitrosodiphenylamine
Bis(2-chloroisopropyl)ether 2,6-dinitrotoluene Phenanthrene
Bis(2-ethylhexyl)phthalate Di-n-octyl phthalate Pyrene
4-bromophenyl phenyl ether 1,2-diphenylhydrazine(as azobenzene) 1,2,4-tdchlorobenzene
Butyl benzyl phthalate Fluoranthene
2-chloronaphthalene Fluorene
GCIMS Fraction—Pesticides
Aldrin Dieldrin PCB-1254
a-BHC a-endosulfan PCB-1221
R-BHC R-endosulfan PCB-1232
y-BHC Endosulfan sulfate PCB-1248
6-BHC Endrin PCB-1260
Chlordane Endrin aldehyde PCB-1016
4,4'-DDT Heptachlor Toxaphene
4,4'-DDE Heptachlor epoxide
4,4'-DDD PCB-1242
2F-11

Exhibit 2F4.Certain Hazardous Substances and Asbestos(40 CFR 122.21,Appendix D,Table V)
Toxic Pollutant
Asbestos
Hazardous Substances
Acetaldehyde Dintrobenzene Naphthenic acid
Allyl alcohol Diquat Nitrotoluene
Allyl chloride Disulfoton Parathion
Amyl acetate Diuron Phenolsulfonate
Aniline Epichlorohydrin Phosgene
Benzonitrile Ethion Propargite
Benzyl chloride Ethylene diamine Propylene oxide
Butyl acetate Ethylene dibromide Pyrethrins
Butylamine Formaldehyde Quinoline
Caplan Furfural Resorcinol
Carbar l Guthion Strontium
Carbofuran Isoprene Strychnine
Carbon disulfide Isopropanolamine Styrene
Chlorpyrifos Kelthane 2,4,5-T(2,4,5-tdchlorophenoxyacetic
acid)
Coumaphos Kepone TDE(tetrachlorodiphenyl ethane)
Cresol Malathion 2,4,5-TP[2-(2,4,5-tdchlorophenoxy)
propancic acid]
Crotonaldehyde Mercaptodimethur Trichlorofon
Cyclohexane Methoxychlor Triethanolamine
2,4-D(2,4-dichlorophenoxyacefic acid) Methyl mercaptan Triethylamine
Diazinon Methyl methacrylate Trimethylamine
Dicamba Methyl parathion Uranium
Dichlobenil Mevinphos Vanadium
Dichlone Mexacarbate Vinyl acetate
2,2-dichloropropionic acid Monoethyl amine Xylene
Dichlorvos Monomethyl amine Xylenol
Diethyl amine Naled Zirconium
Dimethyl amine
2F-12

- r
Exhibit 2F-5.Hazardous Substances
1.Acetaldehyde 73.Caplan 144.Ferrous sulfate
2.Acetic acid 74.Carbaryl 145.Formaldehyde
3.Acetic anhydride 75.Carbofuran 146.Formic add
4.Acetone cyanohydrin 76.Carton disulfide 147.Fumadc add
S.Acetyl bromide 77.Carbon tetrachloride 148.Furfural
6.Acetyl chloride 78.Chlordane 149.Guthion
7.Acrolein 79.Chlorine 150.Heptachlor
8.AcrAonitrile 80.Chlorobenzene 151.Hexachlorocydopentadiene
9.Adipic add 81.Chloroform 152.Hydrochloric add
10.Aldrin 82.Chlcropyrifos 153.Hydrofluoric add
11.Allyl alcohol 83.Chlorosulfonic add 154.Hydrogen cyanide
12.Ally!chloride 84.Chromic acetate 155.Hydrogen sulfide
13.Aluminum sulfate 85.Chromic acid 156.Isoprene
14.Ammonia 86.Chromic sulfate 157.Isopropanolamine dodecylbenzenesulfonate
15.Ammonium acetate 87.Chromous chloride 158.Keithane
16.Ammonium benzoate 88.Cobaltous bromide 159.Kepone
17.Ammonium bicarbonate 89.Cobaltous formate 160.Lead acetate
18.Ammonium bichromate 90.Cobaltous sulfamate 161.Lead arsenate
19.Ammonium bifluoride 91.Coumaphos 162.Lead chloride
20.Ammonium bisulfde 92.Cresol 163.Lead fiuoborate
21.Ammonium carbamate 93.Crotonaldehyde 164.Lead fluorite
22.Ammonium carbonate 94.Cupric acetate 165.Lead iodide
23.Ammonium chloride 95.Cupric acetoarsenite 166.Lead nitrate
24.Ammonium chromate 96.Cupric chloride 167.Lead stearate
25.Ammonium citrate 97.Cupric nitrate 168.Lead sulfate
26.Ammonium fluoroborate 98.Cupric oxalate 169.Lead sulfide
27.Ammonium fluoride 99.Cupric sulfate 170.Lead thiocyanate
28.Ammonium hydroxide 100.Cupric sulfate ammoniated 171.Lindane
29.Ammonium oxalate 101.Cupric tartrate 172.Lithium chromate
30.Ammonium silicofluoride 102.Cyanogen chloride 173.Malathion
31.Ammonium sulfamate 103.Cydohexane 174.Maleic add
32.Ammonium sulfide 104.2,4-D add(2,4-dichlorophenoxyacetic add) 175.Maleic anhydride
33.Ammonium sulfite 105.2,4-D esters(2,4-dichlorophenoxyacetic add esters) 176.Mercaptodimethur
34.Ammonium tartrate 106.DDT 177.Mercuric cyanide
35.Ammonium thiocyanate 107.Di&non 178.Mercuric nitrate
36.Ammonium thiosulfate 108.Dicamba 179.Mercuric sulfate
37.Amyl acetate 109.Dichlobenil 180.Mercudc thiocyanate
38.Aniline 110.Dichlone 181.Mercurous nitrate
39.Antimony penaachloride 111.Dichlorobenzene 182.Methoxychlor
40.Antimony potassium tartrate 112.Dichloropropane 183.Methyl mercaptan
41.Antimony tribromide 113.Dichloropropene 184.Methyl methacrylate
42.Antimony trichlodde 114.Dichloropropene-dichloprompane mix 185.Methyl parathion
43.Antimony Muodde 115.2,2-dichloropropionic add 186.Mevinphos
44.Antimony trioxide 116.Dichlorvos 187.Mexacarbate
45.Arsenic disulfide 117.Dieldrin 188.Monoethylamine
46.Arsenic pentoxide 118.Diethylamine 189.Monomethylamine
47.Arsenic hichlodde 119.Dimethylamine 190.Naled
48.Arsenic trioxide 120.Dinitrobenzene 191.Naphthalene
49.Arsenic tsulfide 121.Dinitrophenol 192.Naphthenic acid
50.Barium cyanide 122.Dinitrotoluene 193.Nickel ammonium sulfate
51.Benzene 123.Diquat 194.Nickel chloride
52.Benzoic add 124.Disulfoton 195.Nickel hydroxide
53.Benzonitrile 125.Diuron 196.Nickel nitrate
54.Benzoyl chloride 126.Dodecylbenzesulfonic add 197.Nickel sulfate
55.Benzyl chloride 127.Endosulfan 198.Nitric add
56.Beryllium chloride 128.Endrin 199.Nitrobenzene
57.Beryllium fluoride 129.Epichlorohydrin 200.Nitrogen dioxide
58.Beryllium nitrate 130.Ethion 201.Nitrophenol
59.Butylacetate 131.Ethylbenzene 202.Nitrotoluene
60.n-butylphthalate 132.Ethylenediamine 203.Paraforrnaldehyde
61.Butylamine 133.Ethylene dibromide 204.Parathion
62.Butyric add 134.Ethylene dichloride 205.Pentachlorophenol
63.Cadmium acetate 135.Ethylene diaminetetracetic add(EDTA) 206.Phenol
64.Cadmium bromide 136.Feric ammonium citrate 207.Phosgene
65.Cadmium chloride 137.Ferric ammonium oxalate 208.Phosphoric add
66.Calcium arsenate 138.Ferric chloride 209.Phosphorus
67.Calcium arsenate 139.Ferric fluoride 210.Phosphorus oxychloride
68.Calcium carbide 140.Ferric nitrate 211.Phosphorus pentasuifide
69.Calcium chromate 141.Ferric sulfate 212.Phosphorus tdchloride
70.Calcium cyanide 142.Ferrous ammonium sulfate 213.Polychlorinated biphenyls(PCB)
71.Calcium dodecylbenzenesulfonate 143.Ferrous chloride 214.Potassium arsenate
72.Calcium hypochlorite 215.Potassium arsenite
2F-13

Exhibit 2F-5.Hazardous Substances
216.Potassium bichromate 245.Sodium phosphate(dibasic) 271.Uranyl acetate
217.Potassium chromate 246.Sodium phosphate(tribasic) 272.Uranyl nitrate
218.Potassium cyanide 247.Sodium selenite 273.Vanadium penoxide
219.Potassium hydroxide 248.Strontium chromate 274.Vanadyl sulfate
220.Potassium permanganate 249.Strychnine 275.Vinyl acetate
221.Propargite 250.Styrene 276.Vinodene chloride
222.Propionic acid 251.Sulfuric acid 277.Xy!ene
223.Propionic anhydride 252.Sulfur monochloride 278.Xy!enol
224.Propylene oxide 253.2,4,5-T acid(2,4,5-tdchlorophenoxyacetic acid) 279.Zinc acetate
225.Pyrethrins 254.2,4,5-T amines(2,4,5-trichlorophenoxy acetic acid 280.Zinc ammonium chloride
226.Quinoline amines) 281.Zinc borate
227.Resorcinol 255.2,4,5-T esters(2,4,5-trichlorophenoxy acetic acid 282.Zinc bromide
228.Selenium oxide esters) 283.Zinc carbonate
229.Silver nitrate 256.2,4,5-T salts(2,4,5-trichlorophenoxy acetic acid 284.Zinc chloride
230.Sodium salts) 285.Zinc cyanide
231.Sodium arsenate 257.2,4,5-TP acid(2,4,5-trichlorophenoxy propanoic 286.Zinc fluoride
232.Sodium arsenite acid) 287.Zinc formate
233.Sodium bichromate 258.2,4,5-TP acid esters(2,4,5-trichlorophenoxy 288.Zinc hydrosulfite
234.Sodium bifluoride propanoic acid esters) 289.Zinc nitrate
235.Sodium bisulfate 259.TDE(tetrachlorodipheny ethane) 290.Zinc phenolsulfonate
236.Sodium chromate 260.Tetraethyl lead 291.Zinc phosphide
237.Sodium cyanide 261.Tetraethyl pyrophosphate 292.Zinc silicofluoride
238.Sodium dodecylbenzenesulfonate 262.Thallium sulfate 293.Zinc sulfate
239.Sodium fluoride 263.Toluene 294.Zirconium nitrate
240.Sodium hydrosulfide 264.Toxaphene 295.Zirconium potassium fluoride
241.Sodium hydroxide 265.Trichlorofon 296.Zirconium sulfate
242.Sodium hypochlorite 266.Tdchloroethylene 297.Zirconium tetrachloride
243.Sodium methylate 267.Trichlorophenol
244.Sodium nitrite 268.Triethanolamine dodecydbenzenesulfonate
269.Triethylamine
270.Trimethylamine
2F-14

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD043678929 NC0004774 Buck Combined Cycle OMB No.2040.0004
Form U.S Environmental Protection Agency
2F vEPA Application for NPDES Permit to Discharge Wastewater
NPDES STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY
SECTIONOUTFALL LOCATIONi
1.1 Provide information on each of the facilib,Is outfalls in the table below
Ottffall
gecehrf g War Name Latltude Lon itude
:. :�::,•; 001CC Yadkin River 35e 42 30++ N 80 22 40" W
075 Yadkin River 35e 42' 49" N 80e 22' 22" W
/
+— II
e I u • / u
146—
SECTION 2.IMPROVEMENTS +0 CFR 122.21(g)(6))
2.1 Are you presently required by any federal,state,or local authority to meet an implementation schedule for constructing,
upgrading,or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes ❑ No 4 SKIP to Section 3.
2.2 Briefly identify each applicable project in the table below.
,Bdef Id"hicattan and Aifea�bed Outfalts '
not Comp n--
llaDates
DescrTptton,oProJ•ct (tistositall punters Soarce(sj of DiOta a
fi. Regufred t'.ro�•cted
-d
a►
,:. E,:
2.3 Have you attached sheets describing any additional water pollution control programs(or other environmental projects
that may affect your discharges)that you now have underway or planned?(Optional Item)
❑ Yes ❑ No
EPA Form 3510-2F(Revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03i05119
NCD043678429 NCO004774 Buck Combined Cycle OMB No.2040-0004
SECTION31' 1
a� 3.1 Have you attached a site drainage map containing all required information to this application?(See instructions for
g; G ro specific guidance.)
to '` M
Q ® Yes ❑ No
SECTION 4.POLLUTANT SOURCES
4.1 Provide information on the facility's pollutant sources in the table below.
Outfall Impervious Surface Area Total Surface Area Drained
Number (within a mile radius of the facility) (within a mile radius of the facility)
specify units specify units
001CC 10-5 acres 18.9 acres
specify units specify units
075 13A acres 36.3 acres
specify units specify units
specify units specify units
specify units specify units
specify units specify units
4.2 Provide a narrative description of the facility's significant material in the space below. (See instructions for content
requirements.)
Outfall 001CC-tube oil,diesel fuel,mineral oil,ammonia,raw water treatment chemicals,cooling tower treatment
Uchemicals.
oOutfall 075-laydown yard,trailers,construction storage warehouse,construction material laydown,outage laydown.
See the attached stormwater permit renewal application narrative for a more detailed description.
0
a
4.3 Provide the location and a description of existing structural and non-structural control measures to reduce pollutants in
stormwater runoff. See instructions forspecificguidance.)
Stormwater Treatment
Codes
Outfall from
Number Control Measures and Treatment Exhibit
2F-1
list
001CC retention pond 1-U
075 retention pond 1-U
EPA Form 3510-21'(Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05119
NCD043678929 NC0004774 Buck Combined Cycle OMB No.2040-0004
SECTION !N STORMWATER A 1
5.1 1 certify under penalty of law that the outfall(s) covered by this application have been tested or evaluated for the
presence of non-stormwater discharges. Moreover, 1 certify that the outfalls identified as having non-stormwater
discharges are described in either an accompanying NPDES Form 2C, 2D, or 2E application.
Name(print or type first and last name) Official title
Kris Eisenrieth Gm lI Regulated Stations-Buck Combined Cycle
Signature Date signed
4D
5.2 Provide the testing information requested in the table below.
U Onsite Drainage Points
Outrall
Number Description of Testing Method Used Date(s)of Testing Directly Observed
During Test
`w
�a
001CC Visual 10/D1/2020 overland discharge path
0
w
c 075 Visual 3/25/2020 overland discharge path
0
z
SECTION OR 1 t
6.1 Describe any significant leaks or spills of toxic or hazardous pollutants in the last three years.
N
None
`0
N
SC
�6
J
C
U
C
4�
SECTION !' ! I
See the instructions to determine the pollutants and parameters you are required to monitor and, in turn,the tables you must
o com lete. Not all applicants need to complete each table.
b 7.1 Is this a new source or new discharge?
0 ❑ Yes 3 See instructions regarding submission of ❑ No 4 See instructions regarding submission of
c
7estimated data. actual data.
m
Tables A,B,C,and D
N 7.2 Have you completed Table A for each outfall?
Yes ❑ No
EPA Form 3510-2F(Revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD043678929 NC0004774 Buck Combined Cycle OMB No.2040-0004
7.3 Is the facility subject to an effluent limitation guideline(ELG)or effluent limitations in an NPDES permit for its process
wastewater?
❑✓ Yes ❑ No 4 SKIP to Item 7.5.
7.4 Have you completed Table B by providing quantitative data for those pollutants that are(1)limited either directly or
indirectly in an ELG and/or(2)subject to effluent limitations in an NPDES permit for the facility's process wastewater?
© Yes ❑ No
7.5 Do you know or have reason to believe any pollutants in Exhibit 217-2 are present in the discharge?
❑✓ Yes ❑ No 4 SKIP to Item 7.7.
7.6 Have you listed all pollutants in Exhibit 2F-2 that you know or have reason to believe are present in the discharge and
provided quantitative data or an explanation for those pollutants in Table C?
❑✓ Yes ❑ No
7.7 Do you qualify for a small business exemption under the criteria specified in the Instructions?
❑ Yes->SKIP to Item 7.18. ✓❑ No
7.8 Do you know or have reason to believe any pollutants in Exhibit 2F-3 are present in the discharge?
❑� Yes ❑ No 4 SKIP to Item 7.10.
7.9 Have you listed all pollutants in Exhibit 2F-3 that you know or have reason to believe are present in the discharge in
c Table C?
❑✓ Yes ❑ No
o; 7.10 Do you expect any of the pollutants in Exhibit 2F-3 to be discharged in concentrations of 10 ppb or greater?
€ ❑
Yes ❑✓ No 4 SKIP to Item 7.12.
40
9 7.11 Have you provided quantitative data in Table C for those pollutants in Exhibit 2F-3 that you expect to be discharged in
LM concentrations of 10 ppb or greater?
cc
❑✓ Yes ❑ No
7.12 Do you expect acrolein,acrylonitrile,2,4-dinitrophenol,or 2-methyl4,6-dinitrophenol to be discharged in concentrations
of 100 ppb or greater?
❑ Yes ❑✓ No 4 SKIP to Item 7.14.
7.13 Have you provided quantitative data in Table C for the pollutants identified in Item 7.12 that you expect to be
discharged in concentrations of 100 ppb or greater?
❑ Yes ❑✓ No
7.14 Have you provided quantitative data or an explanation in Table C for pollutants you expect to be present in the
discharge at concentrations less than 10 ppb(or less than 100 ppb for the pollutants identified in Item 7.12)?
❑ Yes No
7.15 Do you know or have reason to believe any pollutants in Exhibit 2F-4 are present in the discharge?
❑ Yes ❑✓ No>SKIP to Item 7.17.
7.16 Have you listed pollutants in Exhibit 2F-4 that you know or believe to be present in the discharge and provided an
explanation in Table C?
❑ Yes ❑✓ No
7.17 Have you provided information for the storm event(s)sampled in Table D?
❑✓ Yes ❑ No
EPA Form 3510-2F(Revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD043678929 NCOOD4774 Buck Combined Cycle OMB No.2040-0004
Used or Manufactured Toxics
c 7.18 Is any pollutant listed on Exhibits 2F-2 through 2F-4 a substance or a component of a substance used or
C manufactured as an intermediate or final product or byproduct?
0
❑ Yes ❑ No 4 SKIP to Section 8.
a
7.19 List the pollutants below,including TCDD if applicable.
1. 4. 7.
CD
2. 5. 8.
An
3. 6. 9.
SECTiON 8.BIOLOGICAL • DATA i
8.1 Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on
any of your discharges or on a receiving water in relation to your discharge within the last three years?
❑✓ Yes ❑ No 4 SKIP to Section 9.
Ln
8.2 Identify the tests and their purposes below.
Test(s) Purpose ofTest(s) Submitted to NPDES Date Submitted
x Permitting Authority?
0
~ Chronic Toxicity Outfall 001A Whole Effluent Toxicity [D Yes ❑ No 09/22/2022
U
o Chronic Toxicity Outfall 007 Whole Effluent Toxicity ❑/ Yes ❑ No 12/05/2022
0
m
❑ Yes ❑ No
SECTION • •• • i
9.1 Were any of the analyses reported in Section 7(on Tables A through C)performed by a contract laboratory or
consulting firm?
0 Yes ❑ No 4 SKIP to Section 10.
9.2 Provide information for each contract laboratory or consulting firm below.
Laboratory Number 1 Laboratory N umber 2 Laboratory Number 3
Name of laboratory/firm
Pace Analytical Services- puke Energy Laboratory Duke Energy
wa Huntersville NC Laboratory
ca
0
c
Laboratory address
9800 Kincey Avenue Suite 100 13339 Hagers Ferry Rd 13339 Hagers Ferry Rd
? Huntersville NC 28078 Huntersville NC 280078 Huntersville NC 280078
R
C
Q
U
R
o Phone number
U [phone] [phone] [phone]
Pollutant(s)analyzed
Total Kjedahl Nitrogen, Bromide,Fluoride,Sulfate, Molybdenum,Nickel,
Ammonia,Phosphorus,COD, Aluminum,Barium,Boron, Selenium,Arsenic,
BOD,Oil and Grease,pH,PCB's Iron,Magnesium,Manganese, Thallium,Total
Zinc,Antimony,Arsenic, Suspended Solids
Beryllium,Cadmium,
Chromium,Copper,Lead
EPA Form 3510-2F(Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03105119
NCD043678929 NC0004774 Buck Combined Cycle OMB No.204M004
SECTION i 1
10.1 In Column 1 below,mark the sections of Form 2F that you have completed and are submitting with your application. For
each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority.Note that not
all applicants are required to complete all sections or provide attachments.
Column 1 Column 2
✓❑ Section 1 ❑ wt attachments(e.g.,responses for additional outfalls)
❑ Section 2 ❑ wl attachments
✓❑ Section 3 ❑ wl site drainage map
✓❑ Section 4 ❑ wl attachments
El Section 5 ❑ wl attachments
0 Section 6 ❑ wl attachments
w ❑✓ Section 7 ❑✓ Table A ❑ wl small business exemption request
ro
p Table B ❑ wl analytical results as an attachment
0
0 Table C ✓❑ Table D
CD
U ❑✓ Section 8 ❑ wlattachments
ca y ✓ Section 9 ❑ wlattachments(e.g.,responses for additional contact laboratories or firms)
Y
❑✓ Section 10 ❑
10.2
Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted. Based on 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. 1 am aware that there are significant penalties for submitting false information, including the possibility of fine
and imprisonment for knowing violations.
Name(print or type first and last name) Official title
4ro4jek7- t 52nrtik2'i GM Buck Combined Cycle
Signature Date signed
EPA Form 3510.21'(Revised 3-19) Page 6

EPA identification Number NPDES Permit Number Facility Name Outfail Number Form Approved 03105/19
NCDO43678929 NC0004774 Buck Combined Cycle 075 OMB No.2040-0004
TABLE • •NAL AND NON CONVENTIONAL •+' +1
You must provide the results of at least one anall sis for every pollutant in this table.Complete ana table for each outfall.See instructions for additional details andrequirements.
Maximum,DailyRischarge Average:DatlyiDlsclta[ge i �IScu�ceYof
(spediy u0s)
A.
{ isdfjl units) - iNOn6eF oftamt :In'orma on
Pollutant or Parameter Giab,Sampfe Taken FIoWtghfed :drab Sample Taken' ?FlotnrWatghted Everrts�Sarrt�led Cnaw iotiniewr
pU ng;Filst .ptl�ilt8 F1rst r dische ers only;use'
Cohtpbalte, T Cc
30 Miriuta _:_. — ._ .. :30 Minutes' diort5)cbdss: (nstiu"
1 Oil and grease <4.9 mg/L <4.9 mg/L 1
2. Biochemical oxygen demand(BODs) 2.1 mg/L 2.7 mg/L 2.1 mg/L 2.7 mg/L 1
>3. Chemical oxygen demand(COD) <25 mg/L 27.5 mg/L <25 mg/L 27.5 mg/L 1
4. Total suspended solids(TSS) 16 mg/L 28 mg/L 16 mg/L 28 mg/L 1
5. Total phosphorus 0.091 mg/L 0.2 mg/L 0.091 mg/L 0.2 mg/L 1
6. Total Kjeldahl nitrogen(TKN) <0.5 mg/L 1.3 mg/L <0.5 mg/L 1.3 mg/L 1
7. Total nitrogen(as N) <O.05 mg/L 1.5 mg/L 0.05 mg/L 1.5 mg/L 1
pH(minimum) 7.2 STU 7.2 STU 1
8:
pH(maximum) 7.4 STU 7.4 STU 1
I Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2F(Revised 3-19) Page 7

}
r
re
This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Oulfall Number Form Approved 03I05/19
NCD043678929 NC0004774 Buck Combined Cycle 075 OMB No.2040-0004
TABLE • •NAL AND NON CONVENTIONAL '• 41 •t
List each pollutant that is limited in an effluent limitation guideline(ELG)that the facility is subject to or any pollutant listed in the facility's NPDES permit for its process wastewater(if the
facility is operating under an existing NPDES permit).Complete one table for each outfall.See the instructions for additional details and requirements.
Maxin ift'Mily,Discharge Avefte-D lly;1111 harge: Source
s units s ar<Ifs {�utrberof:Stoim Information'
Pollutant and CAS-Number(lfavailable) ' Grab.,Sample Taken'. Grab Sample Taken (new .sotuoehsew
Durlgg Ftrst, - Floik�WetgNtetl Dttrtttg,Ftrsi F{ovwlNetghted `Events°Sa`mpled d�sdiargers only;use
Composite ComposEte
30 Minutes 3Minutes cones in,instruclidns)
Arsenic <S ug/L <1 ug/L <1 ug/L <1 ug/L 1
Copper 8.58 ug/L 7.68 ug/L 8.58 ug/L 7.68 ug/L 1
Selenium <1 ug/L <1 ug/L <1 ug/L <1 ug/L 1
Mercury 1.8 ng/L 12.5 ng/L 1.8 ng/L 12.5 ng/L 1
Chromium <1 ug/L 2.72 ug/L <1 ug/L 2.72 ug/L 1
Nickel 1.02 ug/L 1.56 ug/L 1.02 ug/L 1.56 ug/L 1
Antimony <1 ug/L <1 ug/L <1 ug/L <1 ug/L 1
Aluminum 0,372 mg/L 6.8 mg/L 0.372 mg/L 6.8 mg/L 1
Fluoride <1 mg/L <0.1 mg/L <1 mg/L <0.1 mg/L 1
Thallium <0.2 ug/L <0.2 ug/L <0.2 ug/L <0.2 ug/L 1
Beryllium <1 ug/L <1 ug/L <1 ug/L <1 ug/L 1
Lead <1 ug/L 1.75 ug/L <1 ug/L 1.75 ug/L 1
Sulfates 40 mg/L 12 mg/L 40 mg/L 12 mg/L 1
Barium 0.025 mg/L 0.024 mg/L 0.025 mg/L 0,024 mg/L 1
Manganese 0.121 mg/L 0.076 mg/L 0.121 mg/L 0.076 mg/L 1
Zinc 0.005 mg/L 0.018 mg/L 0.005 mg/L 0.018 mg/L 1
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2F(Revised 3-19) Page 9

y .
LL
This page intentionally left blank.

K
EPA Identification Number NPDES Permit Number Facility Name Outtall Number Form Approved 03/05/19
NCD043678929 N00004774 Buck Combined Cycle 075 OMB No.2040-0004
TABLE C.TOXIC POLLUTANTS, CERTAIN HAZARDOUS SUBSTANCES,AND ASBESTOS(40 CFR 122.26(c)(1)(i)(E)(4)and 40 CFR 122.21(g)(7)(vi)(B)and(vii))'
List each pollutant shown in Exhibits 2F-2,2F-3,and 2F-4 that you know or have reason to believe is present.Complete one table for each outfall.See the instructions for additional
details and requirements.
MaximumtQalhl Rlscbargen; #verage Daiiy�R(sc arge Sourcel`of
units ' ..�s unifs
-.. _ .. _ 0 Oh
Po[lutarit'apd CA8..Number(i(apai(at ); Glrati mpie Taken r ,.» t3rab�SamplepUken r(ne+G:rturc tew
Flow Welgtlfetghtsdven aTnpled
Dgrl0B'Fi�sf Durtiig First disdtaers one,tfse,:
:,. Comp
40'M
osite Composite
:30Miniutes idutas '` .. .. , codesin�iatiuctionsj
Molybdenum 5.98 ug/L 4.70 ug/L 5.98 ug/L 4.70 ug/L 1
PCB's <0.5 ug/L <0.42 ug/L <0.5 ug/L <0.42 ug/L 1
Silver <0.3 ug/L <0.3 ug/L <0.3 ug/L <0.3 ug/L 1
Magnesium 12.1 mg/L 3.25 mg/L 12.1 mg/L 3.25 mg/L 1
Boron <0.05 mg/L <0.05 mg/L <O.OS mg/L <0.05 mg/L 1
Bromide <1 ug/L <0.1 mg/L <1 ug/L <0.1 mg/L 1
Nitrate/Nitrite <0.04 mg/L 0.22 mg/L <0.04 mg/L 0.22 mg/L 1
Iron 0.817 mg/L 6.89 mg/L 0.817 mg/L 6.89 mg/L 1
Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2F(Revised 3-19) Page 11

MMh
This page intentionally left blank.

EPA Identification Number NPOES Permit Number Facility name Outiall Number Form Approved 03105/19 '
NCD043678929 NC0004774 Buck Combined Cycle 075 OMB No.2040-0004
STORMTABLE D. •• •
Provide data for the storm event(s)that resulted in the maximum daily discharges for the flow-weighted composite sample.
Number of Hours Between
Total Rainfall During Maximum Flow Rate
Duration of Storm Event Beginning of Storm Measured and Total Flow from Rain Event
Date of Storm Event (in hours) Storm Event End of Previous Measurable Rain During Rain Event (in gallons or specify units)
{in inches) Event (in gpm or speafy units}
12/15/2022
15 0.72 192 3 2700
Provide a description of the method of flow measurement or estimate.
Calculation,storm duration x flow X 60 minutes in an hour
EPA Form 3510-2F(Revised 3-19) Page 13

DUKE Duke Energy
( ` j Buck Combined Cycle
E N E RGY® 1385 Dukeville Road
Salisbury,NC 28146
January 24, 2023
Ms. Suzanne McCoy
NC DEMLR Stormwater Program
1612 Mail Service Center
Raleigh,NC 27699-1612
Subject: Duke Energy Carolinas, LLC.
Buck Steam Station and Buck Combined Cycle RECEIVEDy
NPDES Industrial Stormwater Permits NCS000578 and NCS000554
Recension, Renewal and Modification Request
1AN 0 r`t"s
LRa=WA&Program
Dear Ms. McCoy: -
Duke Energy Carolinas, LLC is submitting herewith, a request to rescind NPDES Stormwater permit
NCS000578, and submitting supplemental information in support of renewing and modifying NPDES
Stormwater permit NCS000554. Both subject NPDES permits expire on July 31, 2023. Duke Energy is
requesting several changes summarized below.
I) Requests recension of Permit NCS000578, this permit was issued to the Buck Steam Station. The
Buck Steam Station has been demolished and all industrial activity associated with it has ceased,
including closure of the coal pile. All stormwater outfalls associated with the steam station, have
been eliminated. The outfalls have either been plugged or removed. This includes outfalls SW-
001, SW-002, SW-003, SW-048, SW-056, SW-073, SW-077, SW-078, SW-079, SW-080 and
SW-081. The Outfalls associated with the powerhouse have also been eliminated,that includes
outfalls SW-005, SW-007, SW-011, SW-015, SW-016,SW-023, SW-025, SW-027, SW-032,
SW-034, SW-035, SW-038, SW-039, SW-058, SW-065, SW-066, SW-067, SW-069, SW-070,
SW-071, and SW-072. The only outfalls left,from the steam station, that are included in
NCS000578 are outfalls SW-001, SW-002, and SW-075. SW-001 and SW-002 are associated
with the Buck Switchyard and Outfall SW-075 is associated with a laydown area, located near the
Combined Cycle Plant (NCS000554).
Outfalls SW-001 and SW-002, currently permitted in NCS000578, are both outfalls associated
with a switchyard that was the primary switchyard for the demolished coal-fired steam station.
The switchyard is still in use by Energy Delivery as a standalone switchyard. It is not used by the
Buck Combined Cycle Station. The Combined Cycle Station has its own switchyard, the Buck
Tie Station, Duke Energy believes that the switchyard formerly associated with the demolished
coal-fired steam station meets all requirements in an email from Bethany Georgoulias of the
Division of Energy,Mineral and Land Resources (Attachment 10) outlining the requirements for
coverage under the NPDES Stormwater Program.The email lists three requirements for a
switchyard to be covered under an NPDES industrial SW permit:

Ms. Suzanne McCoy
Permit NCS000578 and Permit NCS000554
Renewal and Modification Request
January 24, 2023
1) A switchyard had been regulated under an NPDES permit or legacy materials from those
activities present in the drainage area would be subject. This includes the situations where
switchyard runoff comingles with runoff from other areas of a power plant that is covered
under an NPDES Permit.
2) A switchyard could also be designated if there is a water quality problem, or it is deemed a
significant contributor of pollutants. This is done by agency designation.
3) If a switchyard is considered an integral part of the power plant that is under an NPDES
permit,that area is essentially co-located and part of the industrial activity,and it would be
subject to the permit.
The demolished coal-fired station switchyard that now operates independently of the Buck Combined
Cycle Station does not meet any of the requirements to be regulated under an NPDES permit since the
coal-fired station has been demolished. Therefore,Duke Energy requests Outfalls SW-001 and SW-002
be removed from coverage under an NPDES industrial SW permit.
2) That NCS000554 be modified to include Outfall SW-075. Duke also requests to move the
sampling location of Outfall SW-075 from its current location. The sample location is currently
located approximately 1,600 ft from the retention pond and is difficult to sample, generally
because of low flow. The new sample location would be located near the discharge flume of the
retention pond to allow for ease of sampling and opportunity for higher flow.
Attached is the renewal application and modification package for the Buck Combined Cycle Permit
(NCS000554) and supplementary information.
Should you have any questions please contact Mr. Steve Cahoon at [e-mail] or at
(919)-546-7457 or Mr. Dale Wooten at [e-mail] or(704)-630-3086.
Sincerely,
Kris Eisenrieth
General Manager
Buck Combined Cycle
Attachments:
Renewal Application
Supplemental Information

Buck Station
Stormwater Permit Renewal Application
Attachment 1
EPA Form 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD043678929 NC0004774 Buck Combined Cycle Station OMB No.2040-0004
Form U.S.Environmental Protection Agency
1 �'l�EPA Application for NPDES Permit to Discharge Wastewater
NPDES GENERAL INFORMATION
SECTION • -D .i
1.1 Applicants Not Required to Submit Form'l
Is the facility a new or existing publicly owned Is the facility a new or existing treatment works
1.1.1 treatment works? 1.1.2 treating domestic sewage?
If yes,STOP.Do NOT complete No If yes,STOP.Do NOT No
Form 1.Complete Form 2A. complete Form 1.Complete
Form 2S.
1.2 Applicants Required to Submit Form 1
1.2.1 Is the facility a concentrated animal feeding 1.2.2 Is the facility an existing manufacturing,
operation or a concentrated aquatic animal commercial,mining,or silvicultural facility that is
n. production facility? currently discharging process wastewater?
o ❑ Yes 4 Complete Form 1 0✓ No ❑✓ Yes 4 Complete Form 0 No
z and Form 2B. 1 and Form 2C.
1.2.3 Is the facility a new manufacturing,commercial, 1.2.4 Is the facility a new or existing manufacturing,
= mining,or silvicultural facility that has not yet commercial,mining,or silvicultural facility that
commenced to discharge? discharges only nonprocess wastewater?
Ei Yes-> Complete Form 1 No Yes 4 Complete Form No
and Form 2D. 1 and Form 2E.
1.2.5 Is the facility a new or existing facility whose
discharge is composed entirely of stormwater
a associated with industrial activity or whose
discharge is composed of both stormwater and
non-stormwater?
✓� Yes 4 Complete Form 1 ❑ No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x)or
(b)(15).
SECTIONADDRESS, s • i
2.1 Fa6lIftykitne
Buck Combined Cycle Station
`0 2.2 EPA Identification Number
O NCD043678929
J
-O
2.3 Facility Contact
Name(first and last) Title Phone number
Steve Cahoon Lead Environmental Specialist [phone]
Q
c Email address
[e-mail]
a d 2.4 Facility Mailing Address
zStreet or P.O.box
1385 Dukeville Rd
City or town State ZIP code
Salisbury NC 28146
EPA Form 3510.1(revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD043678929 NC0004774 Buck Combined Cycle Station OMB No.2040-0004
" 2.5 Facility Location
Street,route number,or other specific identifier
Q 0 1385 Dukeville Rd
a)
___ g County name County code(if known)
Rowan
0
City or town State ZIP code
o Salisbury NC 28146
SECTIONAND NAICS CODES41
3.1 SIC Codes) Description(op6enal)
4911 Electric Power Generation
as
m
v
0
c�
c�
z 3.2 NAICS Code(s) Description(optional)
�o
c
221112 Electric Power Generation,fossil fuel(gas)
U
SECTION
OPERATOR INFORMATION(40
4.1 Name of Operator
Duke Energy Carolinas,Inc.
0 4.2 Is the name you listed in Item 4.1 also the owner?
R
❑✓ Yes ❑ No
4.3 Operator Status
0
1! ❑ Public—federal ❑ Public—state Other public(specify)utility
o ❑ Private ❑ Other(specify)
4.4 Phone Number of Operator
[phone]
4.5 Operator Address
r Street or P.O.Box
�o
526 S.Church St
City or town State ZIP code
o v Charlotte NC 28202
;, Email address of operator
O [e-mail]
SECTION1 1 +1
C 5.1 Is the facility located on Indian Land?
_' ❑Yes ❑✓ No
EPA Form 3510-1(revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD043678929 N00004774 Buck Combined Cycle Station OMB No.2040-0004
SECTION 's • 41
6.1 F.z sting Environmental Permits(check all fhat apply and print or type-the corresponding permit number for each)
m NPDES(discharges to surface m RCRA(hazardous wastes) ❑ UIC(underground injection of
c water) fluids)
NC0004774 NCD043678929
W a ❑✓ PSD(air emissions) ❑ Nonattainment program(CAA) ❑ NESHAPs(CAA)
Cn
.7 03786T37
.e ❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section 404) ❑ Other(specify)
SECTION1
7.1 Have you attached a topographic map containing all required information to this application?(See instructions for
CL specific requirements.)
❑✓ Yes ❑No ❑CAFO—Not Applicable(See requirements in Form 26.)
SECTION • OF 41
8.1 Describe the nature of your business.
Electric Power Generation
d
c
ca
m
0
w
ea
z
SECTION •• • 41
9.1 Does your facility use cooling water?
a ❑✓ Yes ❑ No 4 SKIP to Item 10.1.
9.2 Identify the source of cooling water.(Note that facilities that use a coaling water intake structure as described at
a,2 40 CFR 125,Subparts I and J may have additional application requirements at 40 CFR 122.21(r).Consult with your
o Y NPDES permitting authority to determine what specific information needs to be submitted and when.)
v Yadkin River
10.1 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)?(Check all that
apply.Consult with your NPDES permitting authority to determine what information needs to be submitted and
when.)
❑ Fundamentally different factors(CWA ❑ Water quality related effluent limitations(CWA Section
Section 301(n)) 302(b)(2))
❑ Non-conventional pollutants(CWA ❑ Thermal discharges(CWA Section 316(a))
Section 301(c)and(g))
❑✓ Not applicable
EPA Form 3510-1(revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD04BG78929 NC0004774 Buck Cornbined Cycle Station OMB No.2040-0004
SECTION 11.CHECKLIST AND CERTIFICATION STATEMENT 1
11.1 In Column 1 below,mark the sections of Form 1 that you have completed and are submitting with your application.
For each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note
that not all applicants are required to provide attachments.
Column 1 Column 2
❑✓ Section 1:Activities Requiring an NPDES Permit ❑ wl attachments
❑✓ Section 2:Name, Mailing Address,and Location ❑ wl attachments
❑✓ Section 3:SIC Codes ❑ wl attachments
0 Section 4:Operator Information ❑ wl attachments
❑✓ Section 5: Indian Land ❑ wl attachments
0 Section 6: Existing Environmental Permits ❑ w!attachments
d
wl topographic
9 ❑� Section 7: Map ❑✓ ma ❑ wl additional attachments
❑✓ Section 8:Nature of Business ❑ wl attachments
❑✓ Section 9:Cooling Water Intake Structures ❑ wl attachments
m
a
❑ Section 10:Variance Requests ❑ wl attachments
c
❑� Section 11: Checklist and Certification Statement ❑ wl attachments
x
m 11.2 Certification Statement
s
U
1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision
in accordance with a system designed to assure that qualified personnel properly gather and evaluate the
information submitted. Based on 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 fine and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Kris Eisenreith General Manager II-Regulated Stations
Signature Date signed
EPA Form 3510-1(revised 3-19) Page 4

Buck Station
Stormwater Permit Renewal Application
Attachment 2
EPA Form 2F

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD043678929 NC0004774 Buck Combined Cycle OMB No.204N004
Form U.S Environmental Protection Agency
2F vEPA Application for NPDES Permit to Discharge Wastewater
NPDES STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY
SECTIONOUTFALL LOCATIONrt
1.1 Provide information on each of the c1lib s ouffalls in the table below
Outfall Receiving Water Name Latitude Longitude
Number
001CC Yadkin River 35' 42' 30" N 80, 22' 40" W
c
0
075 Yadkin River 35° 42 49" N so* 22' 22" W
0
O I p O ! N
SECTION 2. IMPROVEMENTS I
2.1 Are you presently required by any federal,state,or local authority to meet an implementation schedule for constructing,
upgrading,or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes ❑✓ No 4 SKIP to Section 3,
2.2 Briefly identify each applicable project in the table below.
Brief Identification and Affected Outfalls Final Compliance Dates
Description of Project gist outfall numbers) Source(s)of Discharge
Required Projected
d
E
0
E
2.3 Have you attached sheets describing any additional water pollution control programs(or other environmental projects
that may affect your discharges)that you now have underway or planned?(Optional Item)
❑ Yes ❑ No
EPA Form 3510-21'(Revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCD043678929 NC0004774 Buck Combined Cycle OMB No.2040-0004
3.1 Have you attached a site drainage map containing all required information to this application?(See instructions for
CD
M_c specific guidance.)
c ® Yes ❑ No
SECTIONPOLLUTANT SOURCES4t
4.1 Provide information on the facility's pollutant sources in the table below.
Outfall Impervious Surface Area Total Surface Area Drained
Number (within a mile radius of the faaliiy) (within a mile radius of the facirdy)
specify units specify units
07S 13.4 acres 36.3 acres
specify units specify units
001 CC 10.8 acres 18.9 acres
specify units specify units
specify units specify units
specify units specify units
specify units specify units
4.2 Provide a narrative description of the facility's significant material in the space below.(See instructions for content
requirements.)
m Outfall 075-Laydown yard,trailers,construction storage yard warehouse,construction material laydown,outage
� laydown.
oOutfall 001 CC-lube oil,diesel fuel,mineral oil,ammonia,raw water treatment chemicals,and cooling tower
y treatment chemicals. See the attached stormwater permit renewal application narrative for a more detailed
description.
0
a
4.3 Provide the location and a description of existing structural and non-structural control measures to reduce pollutants in
stormwater runoff. See instructions forspecificguidance.)
Stormwater Treatment
Codes
Outfall from
Number Control Measures and Treatment Exhibit
2F-1
gist)
075 retention pond 1-U
001 CC retention pond 1-U
EPA Form 3510-2F(Revised 3-19) Page 2

EPA Idenfification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCO043678929 NCOOD4774 Buck Combined Cycle OMB No,2040-0004
SECTION •N STORMWATER 1
5.1 t certify under penalty of law that the outfall(s) covered by this application have been tested or evaluated for the
presence of non-stormwater discharges. Moreover, l certify that the outfalls identified as having non-stormwater
discharges are described in either an accompanying NPDES Form 2C, 2D, or 2E application.
Name(print or type first and last name) Official title
Kris Eisenrieth General Manager,Buck Combined Cycle
Signature Date signed
rn 5.2 Provide the testing information requested in the table below.
Outfall Onsite Drainage Points
o . Number Description of Testing Method Used Date(s)of Testing Directly Observed
During Test
075 Visual 10/01/2020 overland discharge path
0
c 001 CC Visual 3/25/2020 overland discharge path
0
SECTIONOR 1
6.1 Describe any significant leaks or spills of toxic or hazardous pollutants in the last three years.
N
None
`0
ur
d
c
�a
u
in
SECTIONDISCHARGE INFORMATION1
See the instructions to determine the pollutants and parameters you are required to monitor and,in turn,the tables you must
o complete. Not all applicants need to complete each table.
E7.1 Is this a new source or new discharge?
❑ Yes 4 See instructions regarding submission of ❑ No 4 See instructions regarding submission of
CDestimated data. actual data.
Tables A,B,C,and D
Mn7.2 Have you completed Table A for each outfall?
0 ❑ Yes ❑ No
EPA Form 3510-2F(Revised 3.19) Page 3

EPA Identification Number NPDES Perm t Number Facility Name Forth Approved 03/05/19
NCD043678929 NC0004774 Buck Combined Cycle OMB No.2040-0004
7.3 Is the facility subject to an effluent limitation guideline(ELG)or effluent limitations in an NPDES permit for its process
wastewater?
0 Yes ❑ No 4 SKIP to Item 7.5.
7.4 Have you completed Table B by providing quantitative data for those pollutants that are(1)limited either directly or
indirectly in an ELG and/or(2)subject to effluent limitations in an NPDES permit for the facility's process wastewater?
❑✓ Yes ❑ No
7.5 Do you know or have reason to believe any pollutants in Exhibit 2F-2 are present in the discharge?
❑✓ Yes ❑ No 4 SKIP to Item 7.7.
7.6 Have you listed all pollutants in Exhibit 2F-2 that you know or have reason to believe are present in the discharge and
provided quantitative data or an explanation for those pollutants in Table C?
❑✓ Yes ❑ No
7.7 Do you qualify for a small business exemption under the criteria specified in the Instructions?
❑ Yes 4SKIP to Item 7.18. ✓❑ No
7.8 Do you know or have reason to believe any pollutants in Exhibit 2F-3 are present in the discharge?
❑2 Yes ❑ No 4 SKIP to Item 7.10.
M 7.9 Have you listed all pollutants in Exhibit 2F-3 that you know or have reason to believe are present in the discharge in
Table C?
0 ❑✓ Yes ❑ No
0 7.10 Do you expect any of the pollutants in Exhibit 2F-3 to be discharged in concentrations of 10 ppb or greater?
❑ Yes ❑✓ No 4 SKIP to Item 7.12.
_= 7.11 Have you provided quantitative data in Table C for those pollutants in Exhibit 2F-3 that you expect to be discharged in
concentrations of 10 ppb or greater?
c
❑✓ Yes ❑ No
7.12 Do you expect acrolein,acrylonitrile,2,4-dinitrophenol,or 2-methyl-4,6-dinitrophenol to be discharged in concentrations
of 100 ppb or greater?
❑ Yes ❑✓ No 4 SKIP to Item 7.14.
7.13 Have you provided quantitative data in Table C for the pollutants identified in Item 7.12 that you expect to be
discharged in concentrations of 100 ppb or greater?
❑ Yes ❑✓ No
7.14 Have you provided quantitative data or an explanation in Table C for pollutants you expect to be present in the
discharge at concentrations less than 10 ppb(or less than 100 ppb for the pollutants identified in Item 7.12)?
❑ Yes ❑✓ No
7.15 Do you know or have reason to believe any pollutants in Exhibit 2F4 are present in the discharge?
❑ Yes ❑✓ No 4 SKIP to Item 7.17.
7.16 Have you listed pollutants in Exhibit 2F4 that you know or believe to be present in the discharge and provided an
explanation in Table C?
❑ Yes ❑✓ No
7.17 Have you provided information for the storm event(s)sampled in Table D?
❑✓ Yes ❑ No
EPA Form 3510-2F(Revised 3-19) Page 4

EPA Identification Number NPOES Permit Number Facility Name Form Approved 03105/19
NCD043678929 NC0004774 Buck Combined Cycle OMB No.2040-0004
.p Used or Manufactured Toxics
7.18 Is any pollutant listed on Exhibits 217-2 through 2F-4 a substance or a component of a substance used or
0
manufactured as an intermediate or final product or byproduct?
❑ Yes ❑✓ No 4 SKIP to Section 8.
o .
a. 7.19 List the pollutants below,including TCDD if applicable.
1. 4. 7.
d
R 2. 5. 8.
0 3. 6. 9.
SECTION 8.BIOLOGICAL TOXICITY TESTING DATA(40 CFR 122.21(g)(1 1))
8.1 Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on
any of your discharges or on a receiving water in relation to your discharge within the last three years?
O
❑✓ Yes ❑ No 4 SKIP to Section 9.
}. 8.2 Identify the tests and their purposes below.
Test(s) Purpose of Test(s) Submitted to NPOES Date Submitted
ac Oen4iiWng Authority?
0
~ Chronic Toxicity Outfall 001A Whole Effluent Toxicity ❑✓ Yes ❑ No 09/22/2022
0
Chronic Toxicity Outfall 007 Whole Effluent Toxicity ❑✓ Yes ❑ No 12/05/2022
m
❑ Yes ❑ No
SECTION -.CONTRACT ANALYSIS INFORMATION
9.1 Were any of the analyses reported in Section 7(on Tables A through C)performed by a contract laboratory or
consulting firm?
❑✓ Yes ❑ No 4 SKIP to Section 10.
9.2 Provide information for each contract laboratory or consulting firm below.
Laboratory Number t Laboratory Number 2 Laboratory Number 3
Name of laboratory/firm Pace Analytical Services- Pace Analytical Services- Duke Energy
wo Asheville NC Huntersville INC Laboratory
0
c
-ca Laboratory address 2225 Riverside Drive 9800 Kincey Avenue Suite 100 13339 Hagers Ferry RD
'o
Asheville NC 28804 Huntersville NC 28078 Huntersville INC 28078
ea
c
Q
L
c Phone number
v [phone] [phone] [phone]
Pollutant(s)analyzed total kjeldahl nitrogen, BOD,Oil and Grease,pH copper,total nitrogen,
ammonia,phosphorus,COD T55
See attached for Outfall 075
Contract Analysis Information
EPA Form 3510-21'(Revised 3-19) Page 5

EPA IdentifEoation Number NPDFS Permit Number Facility Name Form Approved 03/05/19
NCD043678929 NC0004774 Buck Combined Cycle OMB No.2040-0004
SECTION1 CHECKLIST AND CERTIFICATIONi .
10.1 In Column 1 below,mark the sections of Form 2F that you have completed and are submitting with your application. For
each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note that not
all applicants are required to com fete all sections or provide attachments.
Column 1 Column 2
❑✓ Section 1 ❑ wl attachments(e.g.,responses for additional outfalls)
❑ Section 2 ❑ wl attachments
✓❑ Section 3 ❑,r wl site drainage map
0 Section 4 El wl attachments
0 Section 5 ❑ w/attachments
s
El Section 6 ❑ w/attachments
✓❑ Section 7 ❑ Table A ❑ wl small business exemption request
0 Table B 0 wl analytical results as an attachment
✓ Table C 0 Table D
a
❑✓ Section 8 ❑ wlattachments
LA ✓ Section 9 Elwlattachments(e.g.,responses for additional contact laboratories or firms)
x
❑✓ Section 10 ❑
10.2
Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted. Based on 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 fine
and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Kris Eisenreith General Manager,Buck Combined Cycle
Signature Date signed /
EPA Form 3510-2F(Revised 3-19) Page 6

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03l05I19
NCD043678929 NC0004774 Buck Combined Cycle CC 001 OMB No.2040-0004
TABLE • • I NON CONVENTIONALPARAMETERS 1
You must provide the results of at least one anal sis for every pollutant in this table.Complete one table for each outfa[I.See instructions for additional details and requirements.
`Maximum Daily Discharge Average Daily Discharge Source of
(specify units) (spe*units) Number of Storm Information
Pollutant or Parameter Grab,Sample Taken Grab Sample Taken (new sourcelnew
FlouwWelghted FlovwWelghted Events Sampled
Composite Composite
During First During First dischargers cnl)r use
codes in instructions
30 Minutes -__ .; 30 Minutes ... .., . :_ )
1. Oil and grease <4.9 mg/I <4.9 mg/I 1
2. Biochemical oxygen demand(BOD5) 9.0 mg/L 9.0 mg/L 1
3. Chemical oxygen demand(COD) <25 mg/I <25 mg/I 1
4. Total suspended solids(TSS) 9.8 mg/I 9.8 mg/I 1
5. Total phosphorus <0.05 mg/I <0.05 mg/I 1
6. Total Neldahl nitrogen(TKN) 0.57 mg/I 0.57 mg/I 1
7. Total nitrogen(as N) 0.57 mg/I :jEjf7.1
57 mg/1 1
pH(minimum) 7.1 STU STU 1
8.
pH(maximum) 8.4 STU 8.4 STU 1
Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2F(Revised 3-19) Page 7

EPA Identification Number NPDES Permit Number FaciI4 Name Outfall Number Form Approved 03/05119
NCD043678929 NC0004774 Buck Combined Cycle CC 001 71 OMB No.2040.0004
TABLE B.CERTAIN CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.26(c)(1)(i)(E)(4)and 40 CFR 122.21(g)(7)(vi)(A)),
List each pollutant that is limited in an effluent limitation guideline(ELG)that the facility is subject to or any pollutant listed in the facility's NPDES permit for its process wastewater(if the
facility is operating under an existing NPDES permit).Complete one table for each outfall.See the instructions for additional details and requirements.
Maximum Daily Discharge Average Daily Discharge Source of
s e' units (sped units Number of Storm Information
Pollutant and CAS Number(if available) Grab Sample Taken Flow-Weighted Flow-Weighte
Grab Sample Taken (new sourcetnew
During First During First d Events Sampled dischargers onlT use
30 Minutes Composite 30 Minutes Composite codes in instructions)
Ammonia <0.1 mg/1 <0.1 mg/1 1
Nitrate/Nitrite <0.04 mg/I <0.04 mg/1 1
Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2F(Revised 3-19) Page 9

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03105/19
NCD043678929 NCOOO4774 Buck Combined Cycle CC 001 7 OMB No.2040-0004
TABLE C.TOXIC POLLUTANTS,CERTAIN HAZARDOUS SUBSTANCES,AND ASBESTOS(40 CFR 122.26(c)(11)(i)(E)(4)and 40 CFR 122.21(g)(7)(vi)(B)and(vii))'
List each pollutant shown in Exhibits 2F-2,2F-3,and 217-4 that you know or have reason to believe is present.Complete one table for each outfall.See the instructions for additional
details and requirements.
Maximum Daily Discharge Average Daily Discharge Source of
(sped units s eci units Number of Storm Information
Pollutant and CAS Number(if available) :Grab Sample Taken Grab Sample Taken (new source/new
During First Flo Composite
Flow-Weighted During First Flow-Weighted Events Sampled dischargers only;use
30 Minutes Composite 30 Minutes Composite codes in instructions)
Copper,Total Recoverable <2 ug/I <2ug/I 1
Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-217(Revised 3-19) Page 11

EPA Identification Number NPDES Permit Number Facility name Outfall Number Form Approved 03105/19
NCD043678929 NC0004774 Buck Combined Cycle CC 001 OMB No.2040-0004
TABLE D.STORM EVENT INFORMATION�40 CFR 122.26(c)(1)(i)(E)(6))
Provide data for the storm event(s)that resulted in the maximum daily discharges for the flow-weighted composite sample.
Total Rainfall Durin Number of Hours Between Maximum Flow Rate Duration of Storm.Event; g Beginning
of Storm Measured and Total Flowfrom Rain Event
Date of StonnEvent Storm;Event .During Rain Event
(in hours) End of Previous Measurable Rain, (in gallons orspedy units)
(in Inches) Event (In 9pm or specify units)
09/30/2022
12 1.30 432 NA NA
Provide a description of the method of flow measurement or estimate.
NA sampled from a flow controlled structure
EPA Form 3510-21'(Revised 3.19) Page 13

Analytical Laboratory Information - Outfall 075
Section 9. Contract Laboratory Analysis
Laboratory 1 Laboratory 2 Laboratory 3 Laboratory 4
Name of Duke Energy Laboratory Pace-Asheville Pace—Charlotte Pace—Columbia
Laboratory/Firm
Laboratory Address 13339 Hagers Ferry Rd 2225 Riverside Dr 9800 Kincey Ave. 106 Vantage
Huntersville NC 28078 Asheville NC Suite 100 Point Drive
28804 Huntersville NC West Columbia,
28078 SC 29172
Phone Number 980.875.5245 828.254.7176 704.875.9092 803.791.9111
Pollutant(s)Analyzed aluminum, antimony, biological oxygen oil and grease, mercury
arsenic, barium demand, chemical Polychlorinated
beryllium, boron, oxygen demand, biphenyls
bromide, cadmium, nitrate/nitrite,
chromium, copper, phosphorus,total
fluoride, iron, lead, kjeldahl nitrogen
magnesium,
manganese,
molybdenum, nickel,
selenium, silver,
sulfates,thallium,total
nitrogen,total
suspended solids, zinc

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
075 OMB No,2040-0004
TABLE A.CONVENTIONAL AND NON CONVENTIONAL +1
You must provide the results of at least one anal sis for every pollutant in this table.Complete one table for each outfall.See instructions for additional details and requirements.
Maximum Daily Discharge Average Dally.Discharge Source of
Flow-Weighted EventsrSampled of Storm Information
(specify units) (specify unfits
Pollutant or Parameter Grab Sample Taken Grab Sample Taken (new source/new
FIow�Weighted
During First During First dischargers only;use
Composite•. " Composite
30 Minutes 30 Minutes codes In instructions}
1. Oil and grease <4.9 mg/1 <4.9 mg/1 1
2. Biochemical oxygen demand(BOD5) 2.1 mg/1 2.1 mg/1 1
3. Chemical oxygen demand(COD) <25 mg/I <25 mg/1 1
4. Total suspended solids(TSS) 16 mg/1 16 mg/1 1
5. Total phosphorus 0.091 mg/1 0.091 mg/1 1
6. Total Kjeldahl nitrogen(TKN) <0.5 mg/I <0.5 mg/1 1
7. Total nitrogen(as N) <0.05 mg/I 0.05 mg/1 i
pH(minimum) 7.2 STU 7.2 STU 1
8.
pH(maximum) 7.4 sru 7.4 sru 1
Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2F(Revised 3-19) Page 7

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03A5119
075 OMB No.2040.0004
TABL E B.C ERTAI • •NAL AND •N CONVENT 10 NAL POLL UTANTSr CF R 122.26(c)(1)(i)(E)(4) • 41 • +
List each pollutant that is limited in an effluent limitation guideline(ELG)that the facility is subject to or any pollutant listed in the facility's NPDES permit for its process wastewater(if the
facility is operating under an existing NPDES permit).Complete one table for each outfall.See the instructions for additional details and requirements.
Maximum Daily Discharge Average Daily Discharge Source of
s units) (sp units Numberof.Storm Information
Pollutant and CAS Number(if available) Grab Sample Taken Grab Sample Taken (new sourcelnew
C
During First Flomposit e ed During First Composite Flow-Weighted Events Sampled dischargers only,use:
Composite
30 Minutes 30 Minutes codes in instructions)`
Arsenic <1 ug/I <1 ug/I 1
Copper 8.58 ug/I 8.58 ug/I 1
Selenium <1 ug/I <1 ug/I 1
Mercury 1.8 ng/I 1.8 ng/I 1
Chromium <1 ug/I <1 ug/I 1
Nickel 1.02 ug/I 1.02 ug/I 1
Antimony <1 ug/I <1 ug/I 1
Aluminum 0.372 mg/I 0.372 mg/I 1
Fluoride <1 mg/I <1 mg/I 1
Thallium <0.2 ug/I <0.2 ug/I 1
Beryllium <1 ug/I <1 ug/I 1
Lead <1 ug/I <1 ug/I 1
Sulfates 40 mg/I 40 mg/I 1
Barium 0.025 mg/I 0.025 mg/I 1
Manganese 0.121 mg/I 0.121 mg/I 1
Zinc 0.005 mg/I 0.005 mg/I 1
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2F(Revised 3-19) Page 9

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
075 :1 OMB No.2040-0004
List each pollutant shown in Exhibits 2F-2,2F-3,and 2174 that you know or have reason to believe is present Complete one table for each outfall.See the instructions for additional
details and requirements.
Maximum Daily Discharge Average Daily Discharge Source of
(sped units (sped units {umber afStid n " Information
Pollutant and CAS Number(if available) Grab Sample Taken Grab Sample Taken new sourceMew
During First Flow-Weighted During first Flow-Weighted .Events Sampled. dischargers only,use
30 Minutes Composite 30 Minutes Composite codes in instructions)
Molybdenum 5.98 ug/I 5.98 ug/I 1
PCB's <0.5 ug/I <0.5 ug/I 1
Silver <0.3 ug/I <0.3 ug/I 1
Beryllium <1 ug/I <1 ug/I 1
Boron <0.05 mg/I <0.05 mg/I 1
Bromide <1 ug/I <1 ug/I 1
Nitrate/Nitrite <0.04 mg/I <0.04 mg/I 1
Iron 0.817 mg/I 0.817 mg/I 1
Magnesium 12.1 mg/I 12.1 mg/I 1
Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2F(Revised 3-19) Page 11

EPA identification Number NPDES Permit Number Facility name Outfall Number Form Approved 03105119
075 OMB No.2040-0004
TABLE •' •' • f
Provide data for the storm event(s)that resulted in the maximum daily discharges for the flow-weighted composite sample.
Numb
r of Hours Between
Duration of Storm Event Total Rainfall During Beginning of Storm Measured and Maximum Flow Rate Total Flow from Raln Event-
Date of Storm Event Storm Event DuringRain Event
(in hours) (in inches) End of Previous Measurable Rain (in gpm or specify units) Qn ga[bns orspedfyunlls�
Event
09/30/2022
12 1.30 432 1.5 1,080
Provide a description of the method of flow measurement or estimate.
Calculation,storm duration x flow X 60 minutes in an hour
EPA Form 3510-2F(Revised 3-19) Page 13

Buck Station
Stormwater Permit Renewal Application
Attachment 3
Supplemental Information Form

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
SC 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.
SC2 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.
SC 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.
SC 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.
SC 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.
SC 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)

Buck Station
Stormwater Permit Renewal Application
Attachment 4
Location and Drainage Maps

('Rl.�ards�! ski. �f. 1� � �• a • �
S(I
I.
" i .
J
It
fir utSLMr�
�' • z: }
r. ASH
RAMN
1q
G 17E BOUN03.DAPY P'! —Y-
-•.— .�
• _ -
vice,a"miDow � • i � wa pia � ! - � - . _ it
�Yan ` -Trading j
I
Ff
1417
I Ikdnr,lhri:- 4'II L'
-
SOURCE: _ ...
s"rS.16 SA103UNY&`0L TKVONT
pEJA�CANGLE,Ot:TAktD FROM THE Uw5 STORE AT
ORMVING HA,BEEN MET VlfrH A PROJECTION OF NORTH f
GARO2INASTATE PLANE COCRGINATE.V TEN FIP032w IKIOE3}
FIGURE1-1
B ENEMY SITE LOCATION MAP
SEEP MANAGEMENT PLAN
BUCK STEAM STATION
SALISBURY•NORTH CAROLINA
>=•�.M,N J air rx i,c�: :uw•r:¢t.4:n:: �..r'c vur
---+ �ti®sr><wsar. oea ati:elia:a �:. •.� :yc --
cwaa�0+ tMt n(1 drf�117�'7r,S� ,v..
•/.'.Oflta 9'i1Ffr� rRf:u9q+rars
w'w'wSYM11PA3C61p_t911] F9CC'iiMSM'ila�ILa[R

!
VVUw
4' r'
Nr
r.. y!'
q
Mi
T: ♦ �.
F
.t•' M -` 4 Y•s it � Y�� � t� d �'
• S 01 - ,-.;N Q TMt� -:ti �S j,.4 ? h a�� J��,�t' r. •� �ELT
•. rl�.,�-,.--//..s` { y3a.'}t, l,s .•N _ 4 . `. t t.. r ., '4'f�.`�5,r_ f '
- ..�i��.. .r�..•-.c,;,. t A.-_ a�. � ".: �* f� _ � o- 1�� yt - „r T, 1�4 f :.I + .'.,v `n
.tr f' '►`�1• � � f _ c" � f to � *� 4 �•� ,.1�� y ��
•
t
Industrial Stormwater Drainage Data
Impervious Surface Area
BasinID/Outfall (acres)
Combined Cycle
�',: ,►_ � ;� �tad =�„ � ,
k• R
jF
11
t
Combined Cycle
. z
I.
y APT. � .1.3' •�.' ��s. — ..i i � 9i f .; tl, \ ,,
` 4 -
N Not for design
Data Source:
Cardno UAS Survey Bock Steam Station
Feburary 2021
Nearmap Imagery a 250 WO Feet !
Industrial �tormwater Drainage Map
January 2022 ' -
0 so 100 Meters

Buck Station
Stormwater Permit Renewal Application
Attachment 5
Summary of Analytical Monitoring

BuckCombined Cycle NCS000554- Stormwater Outfall SWO01 Monitoring
ay`C�, �t Leo
0
.o'`a♦ Quo LJ� aye' �°� to�2
♦tea. ♦5�y ��� pie ♦Qd` ♦��,
Q
Units inches SU mg/L mg/L mg/L mg/L mg/L
Benchmark NA 6.0-9.0 100 0.010 15 8.4 30 SWRetPond to Yadkin R.
Frequency SA SA SA SA SA SA SA
Date
10/10/2018 0.42 6.3 10 0.00364 <4.3 <0.02 <0.1 compliant
1/29/2019 0.18 7.3 15 0.00467 <5.0 <0.02 0.18 compliant
11/12/2019 0.49 7.8 6.6 0.00182 <5.0 <0.02 0.23 compliant
1/24/2020 1.36 7.2 15 0.00460 <5.0 <0.02 0.88 compliant
8/31/2020 2.23 7.7 7.7 0.00149 <5.0 <0.02 0.30 compliant
1/25/2021 0.36 7.0 <2.5 0.00262 <5.0 <0.02 0.23 compliant
7/8/2021 0.31 7.9 3.9 <0.005 <4.9 0.423 0.94 compliant
2/4/2022 0.27 7.0 6.5 0.00316 <4.8 <0.02 1 0.18 compliant
9/30/2022 1.3 7.1 9.5 0.00204 <4.8 <0.10 1 <0.5 compliant
SU -standard units SA-semi-annual
mg/L- milligrams per liter SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter Disc-discontinued
ng/L- nanograms per liter ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three
Tier I (3) consecutive results are below benchmark value.
Tier II Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are below
benchmark value.
• •. • - • • • • • • • • • 1 •. • '• • • protocols
iet
-o • �• - o� -• by '
Other Notes:

BuckSteam Station NCS000578-Stormwater Outfall SWO01 Monitoring
a50 o\ o e�2` �.p'L 1�4'
ZP J,Ia `\� a� � �O r�ti r N. r tti r c, r cti r tti r c,
\
L Al
Poo Q�°° Pi°o
Parameter Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L ng/L mg/L ug/L ug/L ug/L ug/L ug/L I ug/L ug/L
Benchmark NA 6.0-9.01 100 0.010 0.056 _[_2.126-1 NE 15 1 <-Detect-> 12"CMP to Yadkin R.
Frequency* SA SA SA SA SA SA SA SA SA * monthly when in Tier status.
Date
10/11/2018 2.96 7.5 10 0.00900 0.00122 0.198 8.89avg 1 <4.4 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier I (Zn), (note:copper is close to benchmork)
11-2018 No Flow No flow
12/20/2018 1.61 7.1 <5 0.00230 0.00346 0.246 12.4 1 <4.4 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 1 <0.40 Tier II (Zn), Hg>12
1/29/2019 0.18 7.6 19 0.00540 0.00266 0.180 18.0a g 1 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier II (Zn), Hg>12
2-3/2019 No Flow No flow
4/12/2019 0.52 6.9 77 0.0166 0.00135 EaLl 22.3 1 <5.0 <0.40 <0.40 <0.40 <0.40 1 <0.40 <0.40 <0.40 Tier I(Cu),Tier III (Zn), Hg>12 need 30 day Tier III notice to NC
5-10/2019 No Flow No flow
11/12/2019 0.49 7.8 18 0.00761 <0.001 7.76 1 <5.0 <0.40 <0.40 <0.40 <0.40 1 <0.40 <0.40 <0.40 Tier I (1st compliance ("c")Cu),Tier III (Zn),
12/2019 No Flow No flow
1/24/2020 1.36 7.5 93 0.00916 <0.001 12.1avg 1 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier I (2nd c: Cu),Tier III (Zn), Hg>12
02/2020 No Flow No flow
3/3/2020 0.16 7.9 <2.5 0.00281 0.00179 2.17avg 1 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier III (Zn)
04/2020 No Flow No flow
5/27/2020 0.81 7.7 <2.5 0.00370 0.00120 v 3.26 1 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier III (Zn)
6/16/2020 1.89 6.9 3.1 0.00460 0.00122 3.35 1 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 1 <0.40 Tier III (Zn)
07/2020 No Flow No flow
8/31/2020 2.23 6.2 <2.5 0.00284 0.00143 0.125 2.29av9 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier III (1st c:Zn)
9/17/2020 1.69 7.8 <2.5 0.00391 <0.001 0.115 2.48 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier III (2nd c:Zn)
10/28/2020 0.28 7.7 5.4 0.00571 <0.001 3.97avg <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (Zn)
11/11/2020 0.39 7.6 4.1 0.00490 <0.001 i 2.14avg <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (Zn)
12/14/2020 1.16 7.3 41 0.00886 <0.001 0.104 11.9 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (1st c: Zn)
2/11/2021 0.45 6.8 4.5 0.00358 0,00130 (iii ?!. 2.47 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (Zn)
3/16/2021 0.55 7.0 3.0 0.00223 0.00144 0.118 1.92 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (1st c:Zn)
4-8/2021 No Flow No flow
9/21/2021 0.96 1 7.0 1 <2.5 1 0.00591 1 <0.001 I C-!F54 1 2.14 1 <5.0 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 Tier III (Zn)
10-12/2021 No Flow No flow
01-02/2022 No Flow No flow
3/23/2022 0.44 1 7.6 1 <2.5 1 0.00454 1 0.00212 1 Co 3 C_- 2.94avg 1 <5.0 1 <0.50 1 <0.50 1 <0.50 1 <0.50 1 <0.50 1 <O.SO 1 <0.50 Tier III (Zn)
4-12/2022 No Flow No flow
SU-standard units SA-semi-annual
mg/L-milligrams per liter SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L-micrograms per liter Disc-discontinued
ng/L-nanograms per liter ROS-representative outfall status
Compliant no shading NFlow-no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three(3)consecutive results
Tier I are below benchmark value.
�tTier II Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are below benchmark value.
• •.^ • c • • • • •a • • a • f • 1 •. • • • • a protocols • • potentially
Tier
• • b. ! '
Other Notes: Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SWO02 Monitoring
ay\
`yoti0 cti�,Ly `4 `yeti `y��� `4 `NY
�o a� r�o r�o r�o r�o r�o r�o r�o
P�oc P�oc, P�oc P�oc P�oc P�oc Ptoc
o`er o`er oQQ ewe .00 �� ��
Parameter Q C C h �` O Q Q Q Q Q Q Q Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L ng/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L
21"CMP to Yadkin R.
Benchmark NA 6.0-9.0 100 0.010 0.056 0.126 NE 15 <-Detect->
Frequency* SA SA SA SA SA SA SA SA SA * monthly when in Tier status.
Date
10/11/2018 2.96 7.3 1 <5 1 0.0126 1 0.00373 1 0.227 2.34 1 <5.0 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 Tier I (Cu,Zn)
11-2018 No Flow
12/20/2018 1.61 1 7.3 1 11 1 0.0131 1 0.00615 1 0.293 11.5 1 <4.5 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 Tier II (Cu,Zn)
1-3/2019 No Flow
4/5/2019 0.98 7.7 9.2 0.00945 0.00204 1 0.438 3.41a g <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier II (Zn, 1st compliance("c"):Cu)
5-10/2019 No Flow No flow
11/12/2019 0.49 7.5 14 0.00856 0.00147_TJCI • 4.54 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier III (Zn,2nd c:Cu)
12/2019 No Flow No flow
1/24/2020 1.36 7.5 1 6.6 1 0.00694 <0.001 2.85 <5.0 1 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 1 <0.40 Tier III (Zn)
02/2020 No Flow No flow
3/3/2020 0.16 8.2 7.4 0.0119 0.00164 2.96 <5.0 <0.40 <0.40 <0.40 <0.40 c0.40 <0.40 <0.40 Tler III (Zn),Tier I Cu(next Cu >BM Is Tier III)
04/2020 No Flow No flow
5/27/2020 0.81 6.1 5.8 1 0.00831 0,001741 M19M2.86 11 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 1 <0.40 Tier III (Zn),Tier I (1st c:Cu- next Cu>BM=Tier III), Note: O&G detection close to bm
6/16/2020 1.89 1 7.1 8.9 0.00113 3.54 <5.0 <0.40 <0.40 1 <0.40 1 <0.40 <0.40 <0.40 1 <0.40 Tier III (Cu,Zn) 30 day notification needed for Cu
07/2020 No Flow No flow
8/31/2020 2.23 7.0 9.3 0.00116 5.44 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier III (Cu,Zn)
9/17/2020 1.69 7.0 4.3 0.00888 <0.001 2.85 <5.0 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 Tier III (Zn, 1st c: Cu)
10/28/2020 0.28 7.6 <2.5 ' 0.00127 1 2.47 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (Cu,Zn)
11/11/2020 0.39 7.5 22 0.00950 <0.001 0 2.10 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (Zn, 1st c: Cu)
12/14/2020 1.16 7.2 22 1 1 <0.001 1 8.49 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (Zn,Cu)
2/11/2021 0.45 7.1 3.4 OffI 0.00148 t 2.51 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (Zn, Cu)
3/16/2021 0.55 1 7.3 12 0.00113 • 3.12 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 Tier III (Zn,Cu)
4-8/2021 No Flow No flow
9/21/2021 0.96 1 6.7 1 4.2 H 0.00624 1 <0.001 a`._ ,' 1.40 1 <5.0 1 <0.40 <0.40 1 <0.40 <0.40 1 <0.40 1 <0.40 <0.40 Tier III (Zn, 1st c:Cu)
10-12/2021 No Flow No flow
1-2/2022 No Flow No flow
3/23/2022 0.44 1 7.7 1 3.6 0.00816 1 0.00140 C_L t� 2.00 1 <5.0 1 <0.50 <0.50 1 <0.50 <0.50 1 <0.50 1 <0.50 1 <0.50 Tier III (Zn,2nd c:Cu)
4-12/2022 1 No Flow INo flow
SU-standard units SA-semi-annual
mg/L-milligrams per liter SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L-micrograms per liter Disc-discontinued
ng/L-nanograms per liter ROS-representative outfall status
Compliant no shading NFlow-no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three(3)consecutive
Tier I results are below benchmark value.
Tier II Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are below benchmark value.
Four exceedancesof benchmark value during monitoringperiod-evaluate causes and implement corrective • • 1 days ofreceiving results for • •. •L,.Sampling protocols evaluate• and
Tier IH
potentially modified by '
Other Notes: Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SWO03 Monitoring
ay
a5o Say .110
�a� eJa` �O� ptip �titi �,5'L ��ti ��� ��o• boo
,`o 5e` NO�'y `0 `o`'y
or\Oi or\o` or or or or or
Parameter ,�o �� �o LoQ �e� ,��� �a O� QL� QL� QL� QL� q QL� q Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L ng/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 10"CMP to Yadkin R.
Benchmark NA 6.0-9.0 100 0.010 0.056 0.126 NE 15 <-Detect->
Frequency* SA SA SA SA SA SA SA SA SA * monthly when in Tier status.
Date
10/11/2018 2.96 1 7.5 130 0.0282 1 0.00980 1 0.143 697 <4.5 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 <0.40 1 <0.40 Tier I (TSS, Cu, Zn) Hg>12
11-2018 No Flow
12/20/2018 1.61 7.2 90 0.0370 1 0.0124 1 0.317 821 1 <4.4 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 Tier II (Cu, Zn) Tier 11st compliance ("c")TSS, Hg >12
1-3/2019 No Flow
4/5/2019 0.98 1 8.1 490 0.0767 10.00413 1 0.230 1 454 1 <5.0 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 <0.40 <0.40 Tier I (TSS), Tier II (Cu,Zn), Hg>12.
5-12/2019 No Flow No flow
01-12/2020 No Flow No flow
1-12/2021 No Flow No flow
1-12/2022 No Flow No flow
SU -standard units SA- semi-annual
mg/L- milligrams per liter SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter Disc- discontinued
ng/L- nanograms per liter ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until
Tier I three (3)consecutive results are below benchmark value.
Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are
'Tier II below benchmark value.
Tier III Four exceedancesof benchmark value during monitoringp- • and implement Prrective actions. • ' within 30 days • for •urth exceedance. Samplingprotocols
valuated and potentially modified by NCDENR.
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW048 Monitoring
`e4 \C�v
Noi got poi Noc mot roc got
oor or or or or or
Parameter ,�o� Q� ,�o LoQ �e� ,(,S �e O� QL� Q�� QL� QL� Q�� QL� QL� Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L ng/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L
15 Steel Pipe to Yadkin R.
Benchmark NA 6.0-9.0 100 1 0.010 0.056 0.126 NE 15 <-Detect->
Frequency SA SA SA SA SA SA SA SA SA
Date
2H2O18 no qualifying flow no flow
11-12O19 no qualifying flow no flow
21-12O19 no qualifying flow no flow
6/16/2020 1.89 1 7.7 1 410 1 0.0326 1 <0.001 1 0.041 4.53 1 <5.0 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 Tier I (TSS, Cu)
7-8/2020 no qualifying flow no flow
9/17/2020 1.69 1 7.6 10 0.0111 1 <0.001 10.0119 5.91 1 <5.0 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 <0.40 Tier II (Cu),Tier I (1st c: TSS)
10-12/2020 no qualifying flow no flow
1-12/2021 no qualifying flow no flow
1-12/2022 no qualifying flow no flow
SU -standard units SA-semi-annual
mg/L- milligrams per liter SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter Disc- discontinued
ng/L- nanograms per liter ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
Tier I One exceedance of benchmark value -Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until
three (3)consecutive results are below benchmark value.
Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are
Tier II below benchmark value.
Tier III Four exceedancesof• - during monitoringperiod-evaluate causes an• implement co"i,4ective • • ' within 30 days ofreceiving result for • •.nce. Sampling protocols
evaluated and potentially modified by NCDENR.
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW056 Monitoring
aye
a
�•1° a� �Ne \0 „y0, titi'1. tiy3 tiyo� �,yo�
�a� ec o1 `fie �o� �o yes poi \oi `oi \°i \°c `o� \oc
�aN�a`� �a`�JyQ ��`J� ° � Pjo`r Poor Poor Pion Poor Pion P�°r
Parameter ,�o 9\ ,�o LoQ 5°� ,(.i` �e O� QL� Q�� QL� QL� QL0 14 Iq Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L ng/L mg/L ug/L ug/L ug/L I ug/L I ug/L ug/L ug/L
Benchmark NA 6.0-9.0 100 0.010 0.056 0.126 NE 15 <-Detect-> to Yadkin R (alt. if submerged)
Frequency SA SA SA SA SA SA SA SA SA
Date
2H2O18 no qualifying flow no flow
1H2O19 no qualifying flow no flow
2H2O19 no qualifying flow no flow
1H2O20 no qualifying flow no flow
2H2O20 no qualifying flow no flow
1H2O21 no qualifying flow no flow
2H2O21 no qualifying flow no flow
1H2O22 no qualifying flow no flow
2H2O22 no qualifying flow no flow
SU -standard units SA- semi-annual
mg/L- milligrams per liter SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter Disc- discontinued
ng/L- nanograms per liter ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Bxceedances
Tier I One exceedance of benchmark value -Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until
three(3)consecutive results are below benchmark value.
,e Two consecutive exceedances of benchmark value- evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results ai•e
-- below benchmark value.
• -• • • • • • • •• ill • • r • • 1 •. • • • �. • • • •
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW073 Monitoring
h`
,a
eo\ a� �a� �0� �°a� ,l°�a� a\ \ � � o�a�
eta � 1�° �a� \Q'e, �La\ \L\ 01�0 °� '`a \y�°1 `he, �
°� t�``J a�` t°� Qe `fie a\ '<?�° �0�`J ,a��`J G�'L `GJ
Parameter �o �� �o h� Qc �o Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ng/L 36"CMP to Yadkin R.-Draining ash haul routes
Benchmark NA 6.0-9.0 100 1 0.0003 0.34 NE 0.065 0.003 0.9 0.010 0.335 0.075 0.09 0.056 NE 0.126 NE
Frequency* SA-QCA SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA I SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA * monthly when in Tier status.
Date
10/11/2018 2.96 1 7.9 1 5500 1 <0.0002 1 0.00606 <0.05 1 <0.020 1 <0.001 1 0.0840 1 0.191 0.0577 0.0690 <0.001 0.00 11 00.00113 0.414 1 522 Tier I (TSS,Cu, Zn) Hg>12 (note:Ni &Cr near benchmarks)
11-2018 No Flow
12/20/2018 1.61 8.2 35 <0.0002 0.00214 0.138 <0.001 <0.001 1 0.00695 0.0162 0.00926 <0.001 <0.001 <0.001 <0.0002 0.062 16.7 Tier II (Cu),Tier 11st compliance ("c")for TSS&Zn, Hg>12
1/29/2019 0.18 7.0 5.0 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 0.00104 1 <0.001 <0.001 <0.001 <0.0002 0.022 7.03 Tier II (1st C: Cu),Tier 12nd C:TSS&Zn
2-3/2019 No Flow
4/12/2019 0.52 7.1 370 <0.0002 0.00261 <0.05 <0.001 <0.001 0.00967 0.0162 0.00534 1 0.00765 <0.001 <0.001 0.000214 0.043 103 Tier II (Cu),Tier I (TSS), Hg>12
5-12/2019 No Flow no flow
1/24/2020 1.36 7.4 100 <0.0002 0.00111 <0.05 <0.001 <0.001 0.00677 0.00378 0.00437 <0.001 <0.001 <0.0002 0.039 24.8 Tier III (Cu), I ier I (1st c: ISS), Hg>11 ISS at benchmark Ilmlt
02-05/2020 No Flow no flow
6/16/2020 1.89 7.2 62 <0.0002 0.00133 <0.05 <0.001 <0.001 1 0.00504 0.00448 0.00398 <0.001 <0.001 <0.0002 0.054 9.81 Tier III (Cu),Tier I (2nd c:TSS)
7-8/2020 No Flow no flow
9/17/2020 1.69 7.3 79 1 <0.0002 0.00134 1 <0.05 <0.001 <0.001 0.00718 =• 0.00 1-2 0.00460 <0.001 <0.001 <0.0002 0.044 11.0 Tier III (Cu),Tier I (3rd c:TSS out of Tier Status)
10-11/2020 No Flow no flow
12/14/2020 1.16 1 7.5 240 1 <0.0002 0.00139 1 <0.05 <0.001 <0.001 0.0127 0.00530 1 0.00734 <0.001 <0.001 1 <0.0002 0.059 21.1 Tier III (Cu),Tier I (TSS next>BM=Tierlll), Hg>12
1-12/2021 No Flow no flow
1-12/2022 No Flow no flow
SU -standard units <- not detected at the following level SA-semi-annual
mg/L-milligrams per liter NA- not applicable SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L-micrograms per liter NE-not established Disc-discontinued
ng/L-nanograms per liter PCB-polychlorinated biphenyls ROS-representative outfall status
Compliant no shading NFlow-no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three(3)consecutive results are below
Tier I benchmark value.
Tier II Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are below benchmark value.
Four exceedancesof benchmark value during monitoringperiod and implement • • • 1 days • for •urth exceedance. Samplingprotocols evaluate• and potentially modified by
Tier[it
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW075 Monitoring
a�\
o♦� ♦ a♦ �a♦ a♦ a♦ ♦
ea5 a♦ tea♦ �°tea � '�° tea♦ a♦ ♦ �°` �°` o,�a
a♦♦ eca A10� �o ♦ e� Lai \L` ��° °� ova 5�� �� ♦\� '�a♦ ��O
�a \� \ J \ \`� \
to
a♦� a♦� at\ o�� oc �♦`J c�`� o� Qe moo♦ a� .moo e��J ♦�`J c,\� i°J
o` �, o'` �4 ei as ,ct oQ �o °a o °♦ ra �c e
Parameter � Q � 5 p Q� Q� C, C., L � ♦, p 5 � 1, �` Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ng/L 30"CMP to Yadkin R. - Draining ash haul routes
Benchmark NA 6.0-9.0 1 100 1 0.0003 0.34 NE 0.065 0.003 0.9 0.010 0.335 0.075 0.09 0.056 1 NE 0.126 NE
Frequency* SA-QCA SA-QCA SA-QCA SA-QCA I SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA I SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA I SA-QCA SA-QCA SA-QCA * monthly when in Tier status.
Date
10/11/2018 2.96 1 8.1 1 5300 1 0.000324 1 0.00864 1 <0.05 1 <0.020 1 <0.001 0.148 1 0.336 1 0.109 1 0.123 1 <0.001 1 0.00133 1 0.00119 1 0.543-1 2180 Tier I (TSS, Cu, Zn, Ag, Pb) Hg >12
11-2018 No Flow
12/20/2018 1.61 7.2 15 <0.0002 0.00139 <0.05 <0.001 <0.001 0.00382 1 0.00338 0.00225 <0.001 <0.001 <0.001 <0.0002 0.039 4.19a g Tier 1 (1 compliance ("c") for TSS, Cu, Zn, Ag, Pb)
1-3/2019 No Flow
4/12/2019 0.52 7.8 1300 <0.0002 0.00224 <0.05 <0.001 <0.001 0.0421 1 0.0985 0.0230 0.0323 <0.001 <0.001 0.000369 0.147 148a„g Tier I (TSS, Cu, Zn)(2nd c: Ag, Pb), Hg>12
5-10/2019 No How no flow
11/12/2019 0.49 7.5 470 <0.0002 0.00168 <0.05 <0.001 <0.001 0.0128 1 0.0318 0.00689 0.00973 <0.001 <0.001 <0.0002 0.064 25.1a g Tier II (TSS, Cu), Tier I (1st c: Zn), Hg>12
12/2019 No Flow no flow
1/24/2020 1.36 1 7.5 =o <0.0002 <0.001 <0.05 <0.001 <0.001 0.0129 �.� t 0.00526 0.00810 1 <0.001 <0.001 <0.0002 0.051 28.5 Tier III (TSS, Cu), Tier I (2nd c: Zn), Hg>12
02/2020 No Flow no flow
3/3/2020 0.16 1 7.7 20 <0.0002 1 <0.001 <0.05 <0.001 I <0.001 1 0.00119 1 0.00180 1 <0.001 <0.001 <0.001 <0.001 1 <0.0002 0.014 1.91 Tier III (1st c:TSS & Cu)
04/2020 No Flow no flow
5/27/2020 0.81 7.7 4.5 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 0.00117 <0.001 <0.001 <0.001 <0.001 <0.0002 <0.005 1.23a g Tier III (2nd c: TSS & Cu)
6/16/2020 1.89 7.3 81 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00470 0.00276 0.00425 <0.001 <0.001 <0.0002 0.023 6.52a�g Tier III (Cu, 3rd c: TSS)
7/2020 No Flow no flow
8/31/2020 2.23 7.4 _ <0.0002 <0.001 <0.05 <0.001 <0.001 0.00558 ff)a� 0.00308 0.00648 <0.001 <0.001 <0.0002 0.029 14.5 Tier III (Cu, TSS), Hg>12
9/17/2020 1.69 7.9 3.1 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 0.00168 <0.001 <0.001 <0.001 <0.001 <0.0002 0.006 2.67a�g Tier III (1st c: Cu &TSS)
10/28/2020 0.28 7.5 4.1 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 0.00125 <0.001 <0.001 <0.001 <0.001 <0.0002 0.005 2.44 Tier III (2nd c: Cu &TSS)
11/11/2020 0.39 7.7 7.0 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00115 0.00454 <0.001 <0.001 <0.001 <0.001 <0.0002 0.010 5.39 Tier III (3rd c: Cu &TSS)
12/14/2020 1.16 7.2 29 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00402 0.00809 0.00195 0.00224 <0.001 <0.001 <0.0002 0.020 11.1 Tier III (4th c: Cu &TSS)
1/25/2021 0.36 7.5 9.6 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 0.020 1.71a,g Tier III (5th c: Cu &TSS)
2/11/2021 0.45 6.1 <2.5 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.0002 0.008 0.713a g Tier III (6th c: Cu &TSS)
3/16/2021 0.55 7.4 51 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00282 1 0.00958 0.00178 0.00256 <0.001 <0.001 <0.0002 0.028 6.51a g Tier III (7th c: Cu &TSS)
4-6/2021 No Flow no flow
7/8/2021 0.31 7.5 9.4 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 1 0.00207 0.00102 <0.001 <0.001 <0.001 <0.0002 0.024 3.29,,,g Tier III (8th c: Cu &TSS)
8/2021 No Flow no flow
9/21/2021 0.96 7.3 25 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 1 <0.002 0.00221 <0.001 <0.001 <0.001 <0.0002 0.018 1.72a,g Tier III (9th c: Cu &TSS)
10-12/2021 No Flow no flow
01/2022 No Flow no flow
2/23/2022 0.27 7.1 8 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 <0.002 <0.001 <0.001 <0.001 <0.001 <0.0002 <0.005 2.11avg Tier III (10th c: Cu &TSS)
3/16/2022 0.62 6.5 <5.1 <0.0003 <0.001 <0.05 <0.001 <0.001 <0.001 <0.002 <0.001 <0.001 <0.001 <0.001 <0.0002 <0.005 2.72z g Tier III (11th c: Cu &TSS)

Buck - Stormwater Outfall SW075 Monitoring
a�\
o♦� ♦ a♦ �a♦ a♦ a♦
eat a♦ ova♦ o'`a �o� ,�o tea♦ a♦ ♦ ,�o'` ,�o'` ova
a♦♦ eta °� ♦ e� Lai \L\ \�° <°� o'�a � a� ♦\� '�a♦ �.�0
1 a \ o \ \5 o
` �` oParameter L ff c ♦� a ° ep Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ng/L 30"CMP to Yadkin R. - Draining ash haul routes
Benchmark NA 6.0-9.0 100 0.0003 0.34 NE 1 0.065 0.003 0.9 0.010 0.335 0.075 0.09 0.056 NE 0.126 NE
Frequency* SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA- CA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA * monthly when in Tier status.
Date
4-8/2022 No Flow no flow
9/30/2022 1.30 7.4 13 1 <0.0003 <0.001 <0.05 1 <0.001 <0.001 <0.001 1 <0.002 <0.001 <0.001 <0.001 <0.001 <0.0002 0.009 2.05a�g Tier III (12th c: Cu &TSS)
10-12/2022 Composite sample was collected during event and not a grab sample
SU - standard units < - not detected at the following level SA-semi-annual
mg/L- milligrams per liter NA- not applicable SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter NE - not established Disc- discontinued
ng/L- nanograms per liter PCB- polychlorinated biphenyls ROS - representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three(3) consecutive results are belo,
Tier
benchmark value.
Tier II Two consecutive exceedances of benchmark value -evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3) consecutive results are below benchmark value.
• dances of•ench-mark value during monitoring periodand implement corrective • • 1 days of •r fourth exceedance. • protocols evaluated and potentially modifill
. .by '
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW077 Monitoring
aye
yo a♦ ova�a`��a♦♦ SJy�e�`aaa `p� °tea♦ .```p\�o� � . •`�� \� •`�� \ .`� � �a ♦`� tea ova♦ 5� a♦
'Ile A", �° e�"'ote a♦ ♦\�e
A.°
te♦ ° ♦ tea♦ \�°te a♦
`�\� ova` •`���5 .��� ��\,�o ����.�
o'`a♦ � o'`a♦ �Je� cyan o�° eta♦ aa� riot o�Q e♦a� ra♦♦` .
Parameter Q 5 p Q> C, C, C, ♦� ♦ p � �. Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ng/L 36"CMP to Yadkin R. - Draining ash haul routes
Benchmark NA 6.0-9.0 100 0.0003 0.34 NE 0.065 0.003 0.9 0.010 0.335 0.075 0.09 0.056 NE 0.126 0.126
Frequency SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA SA-QCA
Date
10/26/2018 1.98 1 7.2 1 240 <0.0002 0.00689 <0.05 <0.001 I <0.001 0.0116 1 0.0414 0.0158 1 0.0138 1 <0.001 I <0.001 1 <0.0002 1 0.266 1 52.8 Tier I (TSS, Cu, Zn) Hg>12
11-12/2018 No Flow no flow
1-3/2019 No Flow no flow
4/19/2019 0.11 8.2 5.8 <0.0002 0.00195 0.054 <0.001 <0.001 0.0216 1 0.0110 0.00410 0.00129 <0.001 0.00746 <0.0002 0.033 13.7a g Tier II (Cu), Tier I (1st compliance ("c"):Zn &TSS), Hg>12
5-12/2019 No Flow no flow
1/24/2020 1.36 7.5 230 <0.0002 <0.001 <0.05 <0.001 <0.001 0.0107 1 0.0233 0.00464 0.00839 <0.001 <0.001 <0.0002 0.052 28.9 Tier 11 (Cu - next>BM=Tier III),Tier I (TSS, 2nd c:Zn), Hg>12
02-05/2020 No Flow no flow
6/16/2020 1.89 7.6 560 <0.0002 0.00262 <0.05 <0.001 <0.001 0.0391 0.0288 0.0331 <0.001 <0.001 0.000436 0.335 24.7 Tier III (Cu),Tier II (TSS),Tier I (Zn), Hg>12
7-8/2020 No Flow no flow
9/17/2020 1.69 7.5 1 <0.0002 0.00120 1 <0.05 <0.001 <0.001 0.00946 �� I • 0.00813 0.00990 1 <0.001 <0.001 <0.0002 0.086 8.22 Tier III (Cu &TSS),Tier I (1st c: Zn)
10/2020 No Flow no flow
11/11/2020 0.39 7.6 71 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00564 1 0 0.00369 0.00511 <0.001 <0.001 <0.0002 0.170 7.88 Tier III (Cu, 1st c:TSS),Tier I (Zn), next Zn>bm is Tier III
12/14/2020 1.16 8.0 <0.0002 0.00119 <0.05 <0.001 <0.001 0.0119 1 0.00669 0.00898 <0.001 <0.001 <0.0002 0.048 19.Oa g Tier ill (Cu,TSS),Tier I (1st c: Zn), next Zn>bm is Tier III,Hg>12
2/11/2021 0.45 7.3 100 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00527 1 0.00278 0.00408 <0.001 <0.001 <0.0002 0.020 12.4 Tier III (Cu, 1st c:TSS),Tier I (2nd c:Zn), next Zn>bm is Tier III, Hg>1
3-12/2021 No Flow no flow
1-12/2022 No Flow no flow
SU -standard units <- not detected at the following level SA-semi-annual
mg/L- milligrams per liter NA- not applicable SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter NE- not established Disc-discontinued
ng/L- nanograms per liter PCB- polychlorinated biphenyls ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
Tier I One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three(3)consecutive results are below benchm',
_value.
Tier II Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are below benchmark value.
Four exceedancesof benchmark value during monitoringperiod and implement corrective • • ' within 3 1 days • for • •. protocols evaluat-• and potentially modified by
Tier III
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW078 Monitoring
ay
e�\A10
,�a� ��e� \O�C�\ jyotiro i4,Lti �4,,�'L
�o
o o or or or or�ot
r r or
a��'
Parameter ,�o� QZ` ,�o� Lo �e ,�.�` O` QL QL QL QL QL QL QL Comments/ Notes
Units inches SU mg/L mg/L mg/L mg/L ng/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L
to Yadkin R.
Benchmark NA 1 6.0-9.01 100 0.010 0.056 0.126 NE 15 <-Detect->
Frequency* SA SA SA SA SA SA SA SA SA * monthly when in Tier status.
Date
10/11/2018 2.96 7.2 25 1 0.0125 <0.001 0.0186 1 11.5 1 <4.5 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 Tier I (Cu)
11-2018 No Flow
12/20/2018 1.61 8.4 1 74 0.0188 <0.001 0.0600 1 196 1 <4.4 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 1 <0.40 Tier 11 (Cu), Hg>12
1-12/2019 No Flow no flow during 2019
01-05/2020 No Flow no flow
6/20/2020 1.89 7.4 11 0.00396 1 <0.001 _ 0.009 3.87 <5.0 1 <0.40 1 <0.40 1 <0.40 <0.40 1 <0.40 <0.40 1 <0.40 Tier 11 (1st c: Cu)
7-12/2020 No Flow no flow
1-12/2021 No Flow no flow
1-12/2022 No Flow no flow
SU -standard units SA-semi-annual
mg/L- milligrams per liter SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter Disc- discontinued
ng/L- nanograms per liter ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three
Tier I (3) consecutive results are below benchmark value.
Two consecutive exceedances of benchmark value -evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are below
Tier II benchmark value.
• -•. • • • • • •• • • - • • • 1 •. • • • '•. • • • •ls
evaluatedTier 1H
and potentially modified by NCDENR.
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW079 Monitoring
- o`ayeJ
` e l roy�
o Olt,
�o 1eA, � ` ty
o e Nor ro
�a��a• ��`�JyQ QQ��`` `e�`J� `\��� i`���, ��e Pioc, P�oc. Pioc, P�oc, Pioc, Pioc P�oc,
Parameter ,�o Q� ,�o Lo �e ,,.� �e O� QL� QL� QL� Q�� QL� QL� QL� Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L ng/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L to Yadkin R.
Benchmark NA 6.0-9.0 100 1 0.010 0.056 0.126 NE 15 <-Detect->
Frequency SA SA SA SA SA SA SA SA SA
Date
12/20/2018 1.61 1 7.5 1 40 0.0165 0.00271 0.198 216 1 <4.4 <0.40 <0.40 <0.40 1 <0.40 1 <0.40 <0.40 <0.40 Tier I (Cu, Zn) Hg>12
1-3/2019 no flow No flow
4/5/2019 0.98 1 7.6 1 190 0.0562 0.00409 0.237 46.2 1 <5.1 <0.40 <0.40 <0.40 1 <0.40 1 <0.40 <0.40 <0.40 Tier I (TSS), Tier II (Cu, Zn), Hg>12
5-12/2019 no flow No flow
1-12/2020 no flow No flow
1-12/2021 no flow No flow
1-12/2022 no flow No flow
SU -standard units SA-semi-annual
mg/L- milligrams per liter SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter Disc-discontinued
ng/L- nanograms per liter ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
Tier I One exceedance of benchmark value- Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until
three (3) consecutive results are below benchmark value.
Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are
Tier II below benchmark value.
Four exceedancesof during monitoring •d and implement co rrective acti•ns. Notify1 days of •r fourth exceedance.
Tier III evaluated and potentially modified by NCDENR.
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW080 Monitoring
ay
��\
ea �a� o'`a '�° \� o`er Nam a� \'�° '�° °� ♦ \� ti� titi titi titi titi titi titi
ova\` ��a \�° P�� `�\ �La\ �\`t G�\� �
tea. �Jy� �Q4o •S� `J� •.�� •`� ��� `�� Qom\ °�� •`��. o� �\ die �°c. �°c. roc, t°c, toc, roc, �°c,
Parameter �� °tea\ S�J�` Pt�e� Q�°ion �e�`` Gaa� Cr C.° �� �.°tea\ Po �e�°F ,�-, �.`�`c\� O�� Q�Q'P QCQ'P QCQ'P QC�P QGQ'P QGQ'P QG�P Comments/ Notes
Units inches SU Jmg/L mg/L I mg/L mg/L mg/L I mg/L I mg/L mg/L I mg/L I mg/L mg/L mg/L mg/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 12"CMP to Yadkin R.
Benchmark NA 6.0-9.0 100 1 0.0003 0.34 1 NE 10.065 0.0031 0.9 0.010 10.33510.075 0.09 0.056 NE 0.126 15 <-Detect->
Frequency SA SA SA I SA I SA I SA I SA I SA I SA I SA I SA I SA SA SA SA SA SA SA
Date
2H2O18 no qualifying flow no flow
1H2O19 no qualifying flow no flow
2H2O19 no qualifying flow no flow
1H2O20 no qualifying flow no flow
2H2O20 no qualifying flow no flow
1H2O21 no qualifying flow no flow
2H2O21 no qualifying flow no flow
1H2O22 no qualifying flow no flow
2H2O22 no qualifying flow no flow
SU -standard units < - not detected at the following level SA-semi-annual
mg/L- milligrams per liter NA- not applicable SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter NE- not established Disc-discontinued
ng/L- nanograms per liter PCB- polychlorinated biphenyls ROS- representative outfall status
Compliant no shading NFlow- no flow
Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three(3) consecutive
Tier I results are below benchmark value.
Tier II Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3) consecutive results are below benchmark value.
• • • • • • • • •• • • - • .e • Notify NCDENR within 30 days of •r fourth exceeclance. • protocols evaluated an•
Tier Al.
•• - • -r o R.
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck - Stormwater Outfall SW081 Monitoring
ay
5°`` ♦ �a� '�a` a� a� ♦ p\ (o ti , 'L
a �a °a •t,° ,.o �a� a� ` �o'` .�o'` ova p� oti titi ,�'' tip` tip` by do
�a0 °'�a �'�o a� Q,� ,La` ��'� o\'�o °� �a �` 5� � ` yam` � °ty �ot� �o{'y °{y �ojy °ty
a��
�� �5 �� �.` �. ��`O •`O �` ¢5 a�� � �,o �`J `�0� `.�O p Qc Qt Qt Qt `,`' Qt Qt
Parameter �C°tea Q °tea �i�Ja P��Q Q�°{° <be Gaa� Cri° C.° � �eaa P� c�a�Q .�ra� 1`�° O�� QCQ' QCQ' QC�' QC QC QLQ' QCQ' Comments/Notes
Units inches SU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/Lj mg/L mg/L mg/L mg/L ug/L ug/L ug/L ug/L I ug/L ug/L ug/L 12"CMP to Yadkin R.
Benchmark NA 6.0-9.0 100 1 0.0003 0.34 NE 1 0.065 0.003 0.9 1 0.010 0.335 0.075 0.09 0.056 NE 10.126 15 <-Detect->
Frequency SA SA SA SA SA SA SA SA SA SA SA SA SA I SA SA SA SA SA
Date
2H2O18 no qualifying flow no flow
11-12O19 no qualifying flow no flow
2H2O19 no qualifying flow no flow
11-12O20 no qualifying flow no flow
21-12O20 no qualifying flow no flow
11-12O21 no qualifying flow no flow
21-12O21 no qualifying flow no flow
11-12O22 no qualifying flow no flow
2H2O22 no qualifying flow no flow
SU -standard units < - not detected at the following level SA-semi-annual
mg/L- milligrams per liter NA- not applicable SA-QCA semi-annualor quarterly during during coal or ash transport
ug/L- micrograms per liter NE - not established Disc- discontinued
ng/L- nanograms per liter PCB- polychlorinated biphenyls ROS- representative outfall status
Compliant no shading NFlow- no flow
_Tier Requirements for Benchmark Exceedances
One exceedance of benchmark value -Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three (3) consecutive results are belo,
Tier I benchmark value.
Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are below benchmark value.
�fotiify NCDENR within 30 days of receiving, owl
Other Notes:
Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response

Buck Station
Stormwater Permit Renewal Application
Attachment 6
Summary of Visual Monitoring

DUKE (3 Stantec
ENE R
Facility Name: Buck Combined Cycle Individual NPDES Permit No. NCS000554
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: CTCC-001
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Erosion/ Total Event
Date: Floating Suspended
Color Odor Clarity Solids Solids Foam Oil Sheen Deposition Precipitation (in)
10/10/2018 Clear None 1 1 1 None None None 0.42
1/29/2019 Clear None 1 1 1 None None None 0.18
11/13/2019 Clear None 1 1 1 None None None 0.49
1/24/2020 Clear None 1 1 1 None None None 1.36
8/31/2020 Clear None 1 1 1 None None None 2.23
1/25/2021 Clear None 1 1 1 None None None 0.36
7/8/2021 Clear None 1 1 1 None None None 0.31
2/4/2022 Clear None 1 1 1 None None None 0.27
9/30/2022 Clear None 1 1 1 None None None 1.3
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Suck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW001
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Erosion/ Total Event
Date: Floating Suspended
Color Odor Clarity Foam Oil Sheen Deposition Precipitation (in)
Solids Solids
10/11/2018 Light/clear None 1 1 1 None None None 2.92
11/2018 No qualifying flow for the month of November
12/20/2018 Clear None 1 1 1 None None None 1.61
1/29/2019 Clear None 3 2 2 None None None 0.18
2/12/2019 No flow 0.35
3/2019 No qualifying flow for the month of March
4/5/2019 Clear None 1 1 1 None None None 0.98
4/12/2019 Light brown None 2 1 2 None None None 0.52
5/2019 No qualifying flow for the month of May
6/2019 No qualifying flow for the month of June
7/2019 No qualifying flow for the month of July
8/2019 No qualifying flow for the month of August
9/2019 No qualifying flow for the month of September
10/2019 No qualifying flow for the month of October
11/12/2019 Med red/brown Med to strong 3 1 1 None None None 0.49
chemical odor
12/23/2019 Light red None 3 1 1 None None None 0.57
1/24/2020 fled None 3 1 1 None None None 1,36
2/6/2020 Reddish brown None 4 1 1 None None None 3.75
3/3/2020 Clear None 1 1 1 None I None None 0.16
4/2020 No qualifying flow for the month of April
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW001
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Erosion/ Total Event
Date: Floating Suspended
Color Odor Clarity Foam Oil Sheen Deposition Precipitation(in)
Solids Solids
5/19/2020 Cloudy white slight odor 2 1 1 Slight bubblesNone None 1.08
5/27/2020 Clear None 1 1 1 None None None 0.81
6/16/2020 Yellow/brown Strong odor 1 1 1 None None None 1.89
7/2020 No qualifying flow for the month of July
8/31/2020 Lt brown None 2 1 1 None None None 2.23
9/17/2020 Clear None 1 1 1 None None None 1.69
10/28/2020 Faint tan None 2 1 1 None None None 0.28
11/11/2020 Clear None 1 1 1 None None None 0.39
12/14/2020 Lt brown None 2 1 1 None None None 1.16
1/25/2021 No flow 0.36
2/11/2021 Slightly cloudy None 1 1 1 None None None 0.45
3/16/2021 Clear None 1 1 1 None None None 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 Clear None 1 I 1 I 1 I None I None None 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/21/2021 Yellow tint None 1 1 1 1 1 1 None I None None 0.96
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW001
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Erosion/ Total Event
Date: Floating Suspended
Color Odor Clarity Foam Oil Sheen Deposition Precipitation (in)
Solids I Solids
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/23/2021 Slight tan None 2 1 1 1 1 1 None I None None 0.44
4/2022 No qualifying flow for the month of April
5/23/2022 Clear None 2 1 1 1 1 1 None I None None 1.48
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5 =Worst Case

4 DUKE Stantec
71
ENERGY.
Facility Name: Buck Steam Station individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO02
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Floating Suspended Erosion/ Deposition Total Event Precipitation
Color Odor Clarity Foam Oil Sheen (in)
Solids Solids
10/11/2018 Clear None 1 1 1 None None None 2.92
11/2018 No qualifying flow for the month of November
12/20/2018 Clear None 1 1 2 2 None None None 1.61
1/29/2019 Clear None 2 2 2 None None None 0.18
2/12/2019 No flow 0.35
3/2019 No qualifying flow for the month of March
4/5/2019 Clear None 1 1 1 1 1 None I None I None 0.98
5/2019 No qualifying flow for the month of May
6/2019 No qualifying flow for the month of June
7/2019 No qualifying flow for the month of July
8/2019 No qualifying flow for the month of August
9/2019 No qualifying flow for the month of September
10/2019 No qualifying flow for the month of October
11/12/2019 Clear None 1 1 1 None None None 0.49
12/23/2019 Clear None 1 1 1 None None None 0.57
1/24/2020 Clear None 1 1 1 None None None 1.36
Lt Reddish
2/6/202D None 2 1 1 None None None 3.75
brown
3/3/2020 Clear None 1 1 1 1 1 None I None I None 0.16
4/2020 No qualifying flow for the month of April
5/19/2020 Clear None 1 1 1 None None None 1.08
5/27/2020 Clear None 1 1 1 None None None 0.81
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5 =Worst Case

� DUKE (10 Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO02
Summary of Stormwater Discharge Outfall (SDO)Qualitative Monitoring Reports
Discharge Assessment
Date: Floating Suspended Erosion/ Deposition Total Event Precipitation
Color Odor Clarity Foam Oil Sheen (in)
Solids Solids
6/16/2020 Clear None 1 1 1 None None None 1.89
7/2020 No qualifying flow for the month of July
8/31/2020 Clear None 1 1 1 None None None 2.23
9/17/2020 Clear None 1 1 1 None None None 1.69
10/28/2020 Clear None 2 1 1 None None None 0.28
11/11/2020 Clear None 1 2 1 None None None 0.39
12/14/2020 Slight tan None 2 1 1 None None None 1.16
1/25/2021 No flow 0.36
2/11/2021 Slightly cloudy None 1 1 1 None None None 0.45
3/16/2021 Clear None 1 1 1 None None None 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 Clear None 1 1 1 1 1 None I None I None 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/21/2021 Clear None 1 1 1 1 1 None I None I None 0.96
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/23/2021 Clear None 2 1 1 1 1 None I None I None 0.44
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

� DUKE Stantec
ENE RGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO02
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Floating Suspended Erosion/ Deposition Total Event Precipitation
Color Odor Clarity Foam Oil Sheen (in)
Solids Solids
5/23/2022 Clear None 2 1 1 None None None 1.48
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

� , DUKE Stantec
ENERGY.
Facility Name: Buck Stearn Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO03
Summary of Stormwater Discharge Outfall (SDO)Qualitative Monitoring Reports
Discharge Assessment Total Event Precipitation
Date: Floating Suspended Erosion/ Deposition
Color Odor Clarity Foam Oil Sheen (in)
Solids Solids
Light/slightly
10/11/2018 None 2 1 1 None None None 2.92
gray
11/2018 No qualifying flow for the month of November
12/20/2018 Light brown None 3 3 2 None I None None 1.61
1/29/2019 No flow 0.18
2/12/2019 No flow 0.35
3/2019 No qualifying flow for the month of March
4/5/2019 Light brown None 3 3 1 2 1 None I None I None 0.98
5/2019 No qualifying flow for the month of May
6/2019 No qualifying flow for the month of June
7/2019 No qualifying flow for the month of July
8/2019 No qualifying flow for the month of August
9/2019 No qualifying flow for the month of September
10/2019 No qualifying flow for the month of October
11/12/2019 Pipe inaccessible due to rip rap covering the outfall 0.49
12/23/2019 No flow 0.57
1/20/2020 No flaw 1.36
2/6/2020 No flow 3.75
3/3/2020 No flow 0.16
4/2020 No qualifying flow for the month of April
5/19/2020 No flow 1.08
7/2020 No qualifying flow for the month of July
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCSOOOS78
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO03
Summary of Stormwater Discharge Outfall (SDO)Qualitative Monitoring Reports
Discharge Assessment
Date: Floating Suspended Erosion/ Total Event Precipitation
Deposition
Color Odor Clarity Foam Oil Sheen (in)
Solids I Solids
8/2020 No qualifying flow for the month of August
9/17/2020 No flow 1.69
11/20/20 No flow-outfall is blocked up
12/14/2020 No flow- pipe is blocked 1.16
1/25/2021 No flow- pipe is blocked 0.36
2/11/2021 No flow- pipe is blocked 0.45
3/16/2021 No flow- pipe is blocked 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 No flow- pipe is blocked 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/21/2021 No flow-pipe is blocked 0.96
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/23/2021 No flow-pipe is blocked 0.44
4/2022 No qualifying flow for the month of April
5/23/2022 No flow- pipe is blocked 1.48
6/2022 No qualifying flow for the month of June
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5=Worst Case

DUCE (: Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact, Dale Wooten Outfall Number: SWO03
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Floating Suspended Erosion/ Deposition Total Event Precipitation
Color Odor Clarity Foam Oil Sheen (in)
Solids Solids
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE
Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW048
Summary of Stormwater Discharge Outfall (SDO)Qualitative Monitoring Reports
Discharge Assessment
Date: Color Odor Clarity Foam Oil Sheen Floating Suspended Erosion/ Deposition Total Event Precipitation (in)
Solids Solids
12/20/2018 No flow from the outfall during rain event 1.61
1/29/2019 No flow 0.18
2/12/2019 No flow 0.35
3/2019 No qualifying flow for the first quarter 2019
6/2019 No qualifying flow for the second quarter 2019
9/2019 No qualifying flow for the third quarter 2019
11/12/2019 No flow 0.49
12/23/2019 No flow 0.57
2/6/2020 No flow 3.75
4/2020 No qualifying flow for the month of April
5/19/2020 Cloudy None 2 1 1 None None None 1.08
white
6/16/2020 Brown None 3 1 1 None None None 1.89
7/2020 No qualifying flow for the month of July
8/2020 No qualifying flow for the month of August
9/17/2020 Clear None 1 1 1 None None None 1.69
11/11/2020 No flow 0.39
12/14/2020 No flow 1.16
1/25/2021 No flow 0.36
2/11/2021 No flow 0.45
3/16/2021 No flow 0.55
4/2021 No qualifying flow for the month of April
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5=Worst Case

DUKE (10 Stantec
ENE RGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW048
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Floating Suspended Erosion/ Deposition Total Event Precipitation (in)
Color Odor Clarity Solids Solids Foam Oil Sheen
5/3/2021 No flow 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/2021 No qualifying flow for the month of September
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/2022 No qualifying flow for the month of March
4/2022 No qualifying flow for the month of April
5/23/2022 No qualifying flow for the month of May
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO56
Summary of Stormwater Discharge Out€all (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Floating Suspended Erosion/ Total Event Precipitation
Deposition
Color Odor Clarity Foam Oil Sheen (in)
Solids Solids
12/20/2018 No flow from the outfall during rain event 1.61
1/29/2019 No flow 0.18
2/12/2019 No flow 0.35
3/2019 No qualifying flow for the first quarter 2019
6/2019 No qualifying flow for the second quarter 2019
9/2019 No qualifying flow for the third quarter 2019
11/12/2019 No flow 0.49
12/23/2019 No flow 0.57
2/6/2020 No flow 3.75
4/2020 No qualifying flow for the month of April
5/19/2020 No flow 1.08
7/2020 No qualifying flow for the month of July
8/2020 No qualifying flow for the month of August
9/17/2020 No flow 1.69
11/11/2020 No flow 0.39
12/14/2020 No qualifying flow for the month December
1/25/2021 No flow 0.36
2/11/2021 No flow 0.45
3/16/2021 No flow 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 No qualifying flow for the month of May
6/2021 No qualifying flow for the month of June
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 = Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO56
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Color Floating Suspended Erosion/ Deposition Total Event Precipitation
Odor Clarity Foam Oil Sheen (in)
Solids Solids
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/2021 No qualifying flow for the month of September
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/2022 No qualifying flow for the month of March
4/2022 No qualifying flow for the month of April
5/23/2022 No qualifying flow for the month of May
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 T Best Case and 5 =Worst Case

<tDUKE Stantec
5 ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County. Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW073
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Total Event
Date: Floating Suspended Erosion/ Deposition
Color Odor Clarity Foam Oil Sheen Precipitation (in)
Solids Solids
10/11/2018 Orange/brown None 5 4 1 5 None None None 2.92
11/2018 No qualifying flow for the month of November
12/20/2018 Light brown None 3 2 2 None None None 1.61
1/29/2019 Clear None 2 2 1 None None None 0.18
2/12/2019 Light brown None 3 1 2 None None None 0.35
3/2019 No qualifying flow for the month of March
4/5/2019 Light brown None 2 2 1 1 None None None 0.98
4/12/2019 Brown/orange None 4 1 1 3 None None None 0.52
5/2019 No qualifying flow for the month of May
6/2019 No qualifying flow for the month of June
7/2019 No qualifying flow for the month of July
8/2019 No qualifying flow for the month of August
9/2019 No qualifying flow for the month of September
10/2019 No qualifying flow for the month of October
11/12/2019 No flow 0.49
12/23/2019 Light red None 3 1 2 None None None 0.57
1/24/2020 Reddish-brown None 4 1 1 None None None 1.36
2/6/2020 Reddish brown None 3 1 1 None None None 3.75
3/3/2020 No flow 0.16
4/2020 No qualifying flow for the month of April
5/19/2020 Cloudy white None 2 1 1 1 None I None None 1.08
5/27/2020 No flow 0.81
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW073
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Total Event
Date: Color Odor Foam Oil Sheen Floating Suspended Erosion/Deposition Precipitation (in)
Clarity
Solids Solids
6/16/2020 Reddish brown None 1ity 1 1 1 None None None 1.89
7/2020 No qualifying flow for the month of July
8/2020 No qualifying flow for the month of August
9/17/2020 Reddish brown None 4 1 1 1 None None None 1.69
11/11/2020 No flow 0.39
12/14/2020 Light brown None 3 2 1 1 None None None 1.16
1/25/2021 No flow 0.36
2/11/2021 No flow 0.45
3/16/2021 No flow 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 No flow 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/2021 No qualifying flow for the month of September
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/2022 No qualifying flow for the month of March
4/2022 No qualifying flow for the month of April
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW073
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Total Event
Date: Floating Suspended Erosion/ Deposition
Color Odor Clarity Solids Solids Foam Oil Sheen Precipitation (in)
5/23/2022 No qualifying flow for the month of May
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5= Worst Case

DUKE Stantec
ENERGY.,
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW075
Summary of 5tormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Total Event
Date: Floating Suspended Erosion/ Deposition
Color Odor Clarity Solids Solids Foam Oil Sheen Precipitation (in)
10/11/2018 Dark Brown None 5 4 5 None None None 2.92
11/2018 No qualifying flow for the month of November
12/20/2018 Light grey None 2 1 1 None None None 1.61
1/29/2019 Clear None 2 2 2 None None None 0.18
2/12/2019 Clear None 1 1 1 None None None 0.35
3/2019 No qualifying flow for the month of March
4/5/2019 Light brown None 2 1 1 None None None 0.98
4/12/2019 Brown/orange None 5 1 3 None None None 0.52
5/2019 No qualifying flow for the month of May
6/2019 No qualifying flow for the month of June
7/2019 No qualifying flow for the month of July
8/2019 No qualifying flow for the month of August
9/2019 No qualifying flow for the month of September
10/2019 No qualifying flow for the month of October
11/12/2019 Clear None 1 1 1 None None None 0.49
12/23/2019 Med red/brown None 4 1 2 None None None 0.57
1/24/2020 Reddish-brawn None 4 1 1 None None None 1.36
2/6/2020 Reddish brown None 3 1 1 None None None 3.75
3/3/2020 Clear None 1 1 1 None I None None 0.16
4/2020 No qualifying flow for the month of April
5/19/2020 Cloudy white None 3 1 2 None None None 1.08
5/27/2020 Clear None 1 1 1 None None None 0.81
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5=Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW075
Summary of Stormwater Discharge Outfall (SDO)Qualitative Monitoring Reports
Discharge Assessment Total Event
Date: Floating Suspended Erosion/Deposition
Color Odor Clarity Foam Oil Sheen Precipitation (in)
Solids Solids
6/16/2020 Reddish brown None 3 1 1 None None None 1.89
7/2020 No qualifying flow for the month of July
9/31/2020 Lt brown None 3 1 1 None None None 2.23
9/17/2020 Clear None 1 1 1 None None None 1.69
10/28/2020 Clear None 2 1 1 None None None 0.28
11/11/20201 Light red None 2 1 1 None None None 0.39
12/14/2020 Light brown None 3 1 1 None None None 1.16
1/25/2021 Clear None 1 1 1 None None None 0.36
2/11/2021 Clear None 1 1 1 None None None 0.45
3/16/2021 Tan None 2 1 1 None None None 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 Tan None 2 1 1 1 1 None I None I None 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flaw for the month of July
8/2021 No qualifying flow for the month of August
9/21/2021 Clear None 1 1 1 1 1 None I None I None 0.96
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/23/2022 Clear None 2 1 1 None None None 0.27
3/23/2021 Clear None 2 1 1 1 None None None 0.44
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

� DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW075
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Total Event
Date: Floating Suspended Erosion/ Deposition
Color Odor Clarity Solids Solids Foam Oil Sheen Precipitation (in)
4/2022 No qualifying flow for the month of April
5/23/2022 Muddy It brown 4 3 1 1 1 1 None I None None 1.48
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/30/2022 Clear None 1 1 1 1 1 None I None I None 1.3
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 Clear None 1 1 1 1 1 None I None I None 0.49
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5 =Worst Case

r DUKE (3 Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW077
Summary of Stormwater Discharge Outfall {SDO} Qualitative Monitoring Reports
Discharge Assessment Erosion/ Total Event Precipitation
Date: Floating Suspended
Color odor Clarity Foam Oil Sheen Deposition (in)
Solids Solids
10/26/2018 Medium brown None 3 1 2 None I None None 1.98
11/2018 No qualifying flow for the month of November
12/20/2018 Medium brown Slight odor 4 2 3 None None None 1.61
1/29/2019 Clear None 3 2 2 Yes None None 0.18
2/12/2019 Clear None 1 1 2 None None None 0.35
3/2019 No qualifying flow for the month of March
4/5/2019 Clear None 1 1 1 1 1 None I None None 0.98
5/2019 No qualifying flow for the month of May
6/2019 No qualifying flow for the month of June
7/2019 No qualifying flow for the month of July
8/2019 No qualifying flow for the month of August
9/2019 No qualifying flow for the month of September
10/2019 No qualifying flow for the month of October
11/12/2019 No flow 0.49
12/23/2019 Med red/brown None 4 1 2 None None None 0.57
1/24/2020 park Reddish- None 5 1 1 None None None 1.36
brown
2/6/2020 Reddish brown None 4 1 1 None None None 3.75
3/3/2020 No flow 0.16
4/2020 No qualifying flow for the month of April
5/19/2020 Reddish brown None 3 1 1 3 1 None I None None 1.08
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW077
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Erosion/ Total Event Precipitation
Date. Color Odor Clarity Floating Suspended Foam Oil Sheen Deposition (in)
Solids Solids
5/27/2020 No flow 0.81
6/16/2020 Reddish brown None 5 1 1 None I None None 1.89
7/2020 No qualifying flow for the month of July
8/2020 No qualifying flow for the month of August
9/17/2020 Reddish brown None 4 1 1 None None None 1.69
11/11/2020 Reddish brown None 3 1 1 None None None 0.39
12/14/2020 Light brown None 3 1 1 None None None 1.16
1/25/2021 No flow 0.36
2/11/2021 Light brown None 3 1 1 1 None I None None 0.45
3/16/2021 No flow 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 No flow 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/2021 No qualifying flow for the month of September
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/2022 No qualifying flow for the month of March
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

� DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW077
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Erosion/ Total Event Precipitation
Date: Floating Suspended
Color Odor Clarity Foam Oil Sheen Deposition (in)
Solids I Solids
4/2022 No qualifying flow for the month of April
5/23/2022 Slightly muddy, None 3 1 2 None None None 1.48
It brown
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 Best Case and 5 =Worst Case

DUKE (3 Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW078
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Total Event
Date. Floating Suspended Erosion/ Deposition
Color Odor Clarity Foam Oil Sheen Precipitation (in)
Solids Solids
10/11/2018 Lt.grayish None 2 1 1 None None None 2.92
11/2018 No qualifying flow for the month of November
12/20/2018 Light brown None 2 1 1 2 None I None None 1.61
1/29/2019 No flow 0.18
2/12/2019 No flow 0.35
3/2019 No qualifying flow for the month of March
4/2019 No qualifying flow for the month of April
5/2019 No qualifying flow for the month of May
6/2019 No qualifying flow for the month of June
7/2019 No qualifying flow for the month of July
8/2019 No qualifying flow for the month of August
9/2019 No qualifying flow for the month of September
10/2019 No qualifying flow for the month of October
11/12/2019 No flow 0.49
12/23/2019 Light red/brown !None 3 1 1 !None None None 0.57
1/20/2020 No flow 1.36
2/6/2020 Lt Reddish None 3 1 1 None None None 3.75
brown
3/3/2020 No flow 0.16
4/2020 No qualifying flow for the month of April
5/19/2020 No flow 1.08
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5 =Worst Case

DUKE (3 Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW078
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Total Event
Date: Floating Suspended Erosion/ Deposition
Color Odor Clarity Foam Oil Sheen Precipitation (in)
Solids Solids
5/27/2020 No flow 0.81
6/16/2020 Clear None 5 1 1 1 None I None None 1.89
7/2020 No qualifying flow for the month of July
8/2020 No qualifying flow for the month of August
9/17/2020 No flow 1.69
11/11/2020 No flow 0.39
12/14/2020 No flow 1.16
1/25/2021 No flow 0.36
2/11/2021 No flow 0.45
3/16/2021 No flow 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 No flow 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/2021 No qualifying flow for the month of September
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/2022 No qualifying flow for the month of March
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY®
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW078
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment Total Event
Date: Deposition
Floating Suspended Erosion/ on
Color Odor Clarity Foam Oil Sheen Precipitation(in)
Solids Solids
4/2022 No qualifying flow for the month of April
5/23/2022 No qualifying flow for the month of May
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and S=Worst Case

DUKE Stantec
ENERGYo
Facility Name: Buck Stearn Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW079
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Color Odor Clarity Foam Oil Sheen Floating Suspended Erosion/ Deposition Total Event Precipitation (in)
Solids I Solids
11/2018 No qualifying flow for the month of November
1/29/2019 No flow 0.18
2/12/2019 No flow 0.35
3/2019 No qualifying flow for the month of March
4/5/2019 Light grey None 2 i 1 None None None 0.98
5/2019 No qualifying flow for the month of May
6/2019 No qualifying flow for the month of June
7/2019 No qualifying flow for the month of July
9/2019 No qualifying flow for the month of August
9/2019 1 No qualifying flow for the month of September
10/2019 No qualifying flow for the month of October
11/12/2019 No flow 0.49
12/23/2019 Light None 2 1 1 None None None 0.57
red/brown
1/20/2020 No flow 1.36
2/6/2020 Clear None 1 1 1 None I None None 3.75
3/3/2020 No flow 0.16
4/2020 No qualifying flow for the month of April
5/19/2020 No flow 1.08
5/27/2020 No flow 0.81
7/2020 No qualifying flaw for the month of July
8/2020 No qualifying flow for the month of August
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5 =Worst Case

DUKE Stantec
ENERGY(.
Facility Name: Buck Steam Station Individual NPDFS Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW079
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Color Odor Clarity Foam Oil Sheen Floating Suspended Erosion/ Deposition Total Event Precipitation (in)
Solids Solids
9/17/2020 No flow 1.69
10/2020 No qualifying flow for the month of October
11/2020 No qualifying flow for the month of November
12/14/20201 No flow 1.16
1/25/2021 No flow 0.36
2/11/2021 No flow 0.45
3/16/2021 No flow 0.55
4/2021 No qualifying flow for the month of April
5/3/2021 No flow 1.36
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/2021 No qualifying flow for the month of September
10/2021 No qualifying flow for the month of October
11/2021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
2/2022 No qualifying flow for the month of February
3/2022 No qualifying flow for the month of March
t
22 No qualifying flow for the month of April
2022 No qualifying flow for the month of May
22 No qualifying flow for the month of June
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SW079
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Color Odor Clarity Foam Oil Sheen Floating Suspended Erosion/ Deposition Total Event Precipitation (in)
Solids Solids
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1= Best Case and 5 =Worst Case

4 5 DUKE (3 Stantec
ENERGY,
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO80
Summary of Storrnwater Discharge Outfall(SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Color Odor Clarity Foam Oil Sheen Floating Suspended Erosion/Deposition Total Event Precipitation (in)
Solids Solids
3/2019 No qualifying flow for the first quarter 2019
6/2019 No qualifying flow for the second quarter 2019
9/2019 No qualifying flow for the third quarter 2019
4/2020 No qualifying flow for the month of April
5/19/2020 No flow 1.08
7/2020 No qualifying flow for the month of July
8/2020 No qualifying flow for the month of August
9/17/2020 No flow 1.69
12/2020 No qualifying flow for the month December
1/2021 No qualifying flow for the month of January
2/2021 No qualifying flow for the month of February
3/2021 No qualifying flow for the month of March
4/2021 No qualifying flow for the month of April
5/3/2021 No qualifying flow for the month of May
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/2021 No qualifying flow for the month of September
10/2021 No qualifying flow for the month of October
1112021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 = Worst Case

� DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO80
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Color Odor Clarity Foam Oil Sheen Floating Suspended Erosion/ Deposition Total Event Precipitation (in)
Solids Solids
2/2022 No qualifying flow for the month of February
3/2022 No qualifying flow for the month of March
4/2022 No qualifying flow for the month of April
5/23/2022 No qualifying flow for the month of May
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5= Worst Case

� DUKE (3 Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000578
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO81
Summary of Stormwater Discharge Out#all (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Color Odor Clarity Foam Oil Sheen Floating Suspended Erosion/ Deposition Total Event Precipitation (in)
Solids Solids
3/2019 No qualifying flow for the first quarter 2019
6/2019 No qualifying flow for the second quarter 2019
9/2019 No qualifying flow for the third quarter 2019
4/2020 No qualifying flow for the month of April
5/19/2020 No flow 1.08
7/2020 No qualifying flow for the month of July
8/2020 No qualifying flow for the month of August
9/17/2020 No flow 1.69
12/2020 No qualifying flow for the month December
1/2021 No qualifying flow for the month of January
2/2021 No qualifying flow for the month of February
3/2021 No qualifying flow for the month of March
4/2021 No qualifying flow for the month of April
5/3/2021 No qualifying flow for the month of May
6/2021 No qualifying flow for the month of June
7/2021 No qualifying flow for the month of July
8/2021 No qualifying flow for the month of August
9/2021 No qualifying flow for the month of September
10/2021 No qualifying flow for the month of October
1112021 No qualifying flow for the month of November
12/2021 No qualifying flow for the month of December
1/2022 No qualifying flow for the month of January
Notes: Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5 =Worst Case

DUKE Stantec
ENERGY.
Facility Name: Buck Steam Station Individual NPDES Permit No. NCS000S78
County: Rowan Phone Number: 704-630-3086
Site Contact: Dale Wooten Outfall Number: SWO81
Summary of Stormwater Discharge Outfall (SDO) Qualitative Monitoring Reports
Discharge Assessment
Date: Color Odor Clarity Foam Oil Sheen Floating Suspended Erosion/ Deposition Total Event Precipitation (in)
Solids Solids
2/2022 No qualifying flow for the month of February
3/2022 No qualifying flow for the month of March
4/2022 No qualifying flow for the month of April
5/23/2022 No qualifying flow for the month of May
6/2022 No qualifying flow for the month of June
7/2022 No qualifying flow for the month of July
8/2022 No qualifying flow for the month of August
9/2022 No qualifying flow for the month of September
10/2022 No qualifying flow for the month of October
11/2022 No qualifying flow for the month of November
12/2022 No qualifying flow for the month of December
Notes:Value assessment of 1-5 for Clarity, Floating Solids and Suspended Solid. Values increasing upward by severity 1 = Best Case and 5=Worst Case

Buck Station
Stormwater Permit Renewal Application
Attachment 7
Summary of BMP's

BMP Summary
Outfall 075
The area that drains to Outfall 0075 consists of a laydown yard,trailers,construction storage yard
warehouse,construction material laydown,outage laydown. As much as possible,raw materials
are stored in the warehouse. Any chemicals stored in this area are stored in the warehouse.
Stormwater that discharges from Outfall 075 is collected in a 0.83-acre stormwater retention
pond. The discharge of the pond is controlled manually. When the pond discharges,the
stormwater enters a grassed swale and flows approximately 1,700 feet the outfall. The conveyed
stormwater is then discharged to the Yadkin River.
Outfall 001 Combined Cycle
The area that drains to combined cycle Outfall 001, is this combined cycle station footprint. All
roof drains and all stormwater runoff from external paved areas enters catch basins that discharge
via subsurface piping into the stormwater detention pond located immediately west of the CTCC.
All internal building floor drains discharge either directly into the station consolidated wastewater
sump or into the oil/water separator that subsequently discharges into the sump. All transformer
containments discharge into the stormwater detention pond. All other open containments,
including tanker unloading stations,discharge directly into the detention pond. Most covered
containments at the station are non-discharge containments.
Much like stormwater that discharges through Outfall 075, stormwater that discharges from the
Combined Cycle to Outfall 001 CC is collected in an approximately 1-acre stormwater detention
pond. The discharge of the pond is controlled manually. Outfall 001 CC is located at the
discharge of the stormwater retention pond.

l.,DUKE
ENERGY.
Location: Buck CTCC Station
SDO Narrative Description and BMP Summary Permit No.NCSOOOSS4
DutfalllD: SW001
Discharge 24'CMP
Structure: � --
Location: 400 feet west-northwest of
as turbine building.
Latitude- 35'42'30"N,80"22'41"W
Longitude:
Drainage Area:
29.2 acres
Percent
56%
Impervious: '.
rf
Permit
Monitoring Table: None �- y
Industrial Drainage Area SWO01 is comprised of the Buck CC station plus the cooling
Activities and tower, a clarifier, office buildings, and a detention pond. The drainage area is
Description mostly paved roadways and building area but the runoff discharge is delayed by
using a detention pond. Oil-filled electrical equipment including transformers is
located within curbed concrete containment pads with manually operated drain
valves.Lubricating system are located within the gas and steam turbine buildings
that have isolated sumps should a spill occur.Natural gas pipelines run
underground to provide fuel to the station. Bulk storage containers containing fuel
oils are located around the site.Transfer operations for fuel oil occur near the bulk
storage containers.
Significant Mineral Oil: Mineral ail is stored in various transformers. The largest
MaterialslPotenti
al Pollutants, transformer contains 16,002 gallons of mineral oil, with the
total mineral oil contained in all the electrical equipment being
approximately 60,096 gallons_
Lube Oil: Lube oil is stored in lubricating systems within the two turbine
buildings.The total lube oil contained within the two buildings
is approximately 17,880 gallons.
Fuel Oil: Diesel,kerosene, and gasoline are stored in bulk storage
containers around the site.The total petroleum-based fuel oil
is approximately 23,254 gallons.

1DUKE
P ENERGY.
Location: Buck CTCC Station
SOO Narrative Description and BMP Summary Permit No.NCSCOOSS4
BMP Summary. De[iveryVehldes
z:e'ys
Develop;prgcedu,.re for the Inspection of all vehicles arriving on the plant
site 1'iijensure overall integrity of_the body or container.
Liquid$tage Tanks/Large:.Bufk Fuel StaragelAbeve Ground Tanks
Prroo'�.de secondary containment with a secured valve in the closed
• Develop and implement SPCC plan
•. =Train'embld tes 10'spiil prevention and control.
Fuel Oil Unloading leas
• F0o*p!oWgre ferfuel transfer In SPCC based on Department of
Transportation's(procedures.
• An,n,oil-Ater separator Is part of the yard drainage around the generating
equiprnerit
Oil Beafing.Equipment
• Provide:secondary containment with a secured valve in the closed
2posltion.
• An oil-wsterseparatoris part of She yard drainage around the generating
equipment
• Train.:employees.in spill prevention,control,cleanup and proper materials
management techniques.
Vehicle Maintenance
• Traln employees In spill prevention,control,cleanup and proper materials
management techniques.
• Spill kits are readily available for use.

Location: Buck Steam Station
SDO Narrative Description and BMP Summary Permit No. NCSOOOS78
O utfa I I ID S W-075
Discharge Structure 30"CMP
Location 150 feet east of yard sump,
outside of station fence
Latitude- 35042'49"N
Longitude: 80022'22"W
No Photo Available Due to Access
Drainage Area: 36.3 acres
Percent 36.6%
Impervious:
Permit 2
Monitoring Table:
Industrial Drainage Area SW075 is a large, partially vegetated area with paved and
Activities and gravel
Description: roads as well as former rail corridor areas. The drainage area is natural
ground
and sheet flows to SW075 and the Yakin River. It includes the
former/closed
location of the fuel storage tank.
Significant Laydown yard, construction storage yard,warehouse, construction
Materials/Potential material laydown and outage laydown.
Pollutants:
BMP Summary: Delivery Vehicles
• Develop procedure for the inspection of all vehicles arriving on the plant
site and ensure overall integrity of the body or container.
Vehicle Maintenance
•Train employees in spill prevention, control, cleanup and proper
materials
management techniques.
•Spill kits are readily available for use.

Buck Station
Stormwater Permit Renewal Application
Attachment 8
Significant Site Changes

Narrative of Significant Site Changes
The old Buck Steam Station Powerhouse and associated facilities have been demolished,with the
demolition of the powerhouse,the outfalls associated with it have also been eliminated,that
includes outfalls SW-005, SW-007, SW-011, SW-015, SW-016, SW-023, SW-025, SW-027,
SW-032, SW-034, SW-035, SW-038, SW-039, SW-058, SW-065, SW-066, SW-067, SW-069,
SW-070, SW-071,and SW-072.
The area in the vicinity the old steam station powerhouse has been cleaned up and industrial
activity in those areas have been eliminated. The stormwater outfalls in the vicinity of the old
steam station including SW-003, SW-048, SW-056, SW-078, SW-079, SW-080 and SW-081
have been eliminated(pipe has been removed or plugged)such that there will not be a discharge
from the outfalls.
The area in the vicinity the old steam station powerhouse,railroad and access road has been
cleaned up and industrial activity in those areas have been eliminated. Stormwater Outfalls SW-
073 and SW-077 are in the vicinity of the powerhouse railroad and access road,however since
their drainage area has been cleaned-up,they no longer discharge stormwater associated with
industrial activity.
Outfalls SW-001 and SW-002 are outfalls associated with a switchyard that was used by the
demolished coal-fired steam station. The switchyard is still onsite and used by Energy Delivery
however, it functions as a standalone switchyard. It is located in the vicinity of the old steam
station powerhouse and all industrial activity around the switchyard has been eliminated. The
switchyard is hydraulically separate from the remaining power generating facility at the station
site,the Buck Combined Cycle Station

Buck Station
Stormwater Permit Renewal Application
Attachment 9
Certification of Development of SWPPP

STORMWATER POLLUTION PREVENTION PLAN
DEVELOPMENT AND IMPLEMENTATION
CERTIFICATION
North Carolina Division of Energy, Mineral; and Land Resources— Stormwater Program
Facility Dame: Buck Combined Cycle Station
Permit Number: NCSCO0554
Location Address: 1385 DukeAle Rd
Salisbury NC 28146
County: Rowan
"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 f`� '1 _ r - -\ Date I �Z-112 3
a
Kris Eisenrieth General Manager II-Regulated Slations
Print or type name of person signing above Title
SPPP Certification 10/13

Buck Station
Stormwater Permit Renewal Application
Attachment 10
Email Bethany Georgoulias Regarding Industrial
Permitting for Substations

'6
S
Dishmon, Joyce Martin 1 P Q�
From: Georgoulias, Bethany <[e-mail]>
Sent: Wednesday, May 8, 2019 9.28 AM
To: Dishmon,Joyce Martin: Lucas,Annette; Garcia, Lauren V
Subject: RE: Stormwater Permitting Status of Switchyards
*** Exercise caution. This is an EXTERNAL email. DO NOT open
attachments or click links from unknown senders or unexpected
email. ***
Joyce,
The answer comes with a couple caveats that I wanted to explain thoroughly. Switchyards or substations by themselves
are not "categorically"captured by the NPDES Stormwater program unless designated for some other reason. So, in
cases where these yards are completely hydraulically separate(usually between the power plant and a different
property),they were not necessarily subject to a permit. However,there are a few of scenarios where they could be
considered subject to an NPDES permit.
If a switchyard had industrial activities regulated by NPDES Stormwater,or legacy materials from those activities that still
present in that drainage area,it would be subject. This includes the situations where switchyard runoff commingles with
runoff from other areas of a power plant this is covered under an NPDES permit.
A switchyard could also be designated, if there is a water quality problem or it is deemed a significant contributor of
pollutants. This is done by agency designation (and it applies to most activities in general).
Finally, if a switchyard is considered an integral part of the power plant that is under an NPDES permit,that area is
essentially co-located and part of that industrial activity, and it would be subject to the permit. That is consistent with
how EPA interprets what is included as that plant's industrial activity, as switchyards are included in the Industrial Fact
Sheet series for Steam Electric Plants:
INDUSTRIAL STORMNVATER FACE SHEET SERIES
Sector 0 Stearn Electric Power Generating Facilities,
Including Coal Handling Areas
Table 2. BMPs for Potential Pollutant Sources at Steam Electric Generating Facilities, induding Coal
Handling Areas(continued)
Pollutant Source $MPS
Qii bearing 0 Construct level grades and gravel surfaces to retard flows and limit the spread of spills
equornent
switdVards
❑ Collect stormwater runoff in pefirneter ditches.
Un.+.6 -..5,....&w.. m n{....r+ ti —*,.J .n fn, —ihn
Because i couldn't make the meeting you had with Annette,I didn't see the site plan or map to understand the situation
you're asking about. Sometimes these switchyards are far removed from plant footprints,and other times they are
more integrated,so Vd need more information to answer the question on the specific case.
1

Buck Station
Stormwater Permit Renewal Application
Attachment 11
Site Narrative

GENERAL SITE INFORMATION
The Buck Combustion Turbine Combined Cycle Plant (CTCC) is a natural gas fired, 620-
megawatt electric generating station located in Rowan County approximately 3 miles east of
Spencer, NC. The facility contains two primary combustion turbine units and one secondary
heat recovery steam generator unit.
The facility is located on a 643-acre property that formerly contained the Buck Steam Station,
which has now been demolished. The property borders the southern shore of the Yadkin River
in the upper reaches of high Rock Lake. The station is accessed from Dukeville Road off Long
Ferry Road.
Also located within the Buck CTCC property boundary is the Buck Tie Station. The Buck Tie
Station is a large 230 kV and 110 kV regional substation facility located approximately 1,500
feet south and upgradient of the Yadkin River. This tie station is a separate facility and
hydraulically unassociated with the Buck CTCC station from a stormwater permitting standpoint.
The CTCC contains 2 industrial stormwater outfalls. Outfall SW-001 is associated with the 14-
acre CTCC Power block, the stormwater from the power block area is routed to a stormwater
retention pond that discharges to the Yadkin River through Outfall SW 001. Outfall SW 075 is
associated with gravel roadway and gravel surface areas including a laydown area and a
warehouse that discharges to the Yadkin River.
The Buck Steam Station maintains an up-to-date Spill Prevention Control and Countermeasure
(SPCC) Plan in place in accordance with the U.S. Environmental Protection Agency (USEPA)
Oil Pollution Prevention Regulation 40 CFR Part 112.
STORMWATER OUTFALLS AND DRAINAGE AREA DESCRIPTIONS
Buck Combustion Turbine Combined Cycle Station has 2 identified active stormwater outfalls
that discharge to surface waters. The outfall locations and contributing drainage area
delineations are shown on the accompanying site plan drawing. All identified stormwater outfalls
either discharge directly into the Yadkin River, or discharge onto the ground in close proximity to
the river.
A description of the contributing drainage area for each outfall is provided below.
Included with the description is the approximate location coordinates of the outfalls, the
approximate amount of impervious surface area within the drainage areas, a description
of any significant materials and activities located within the drainage areas, the type of
discharge conveyances, and a description of any discharge control measures.
In addition to any significant materials particular to each drainage basin, herbicides are
applied to selected areas at the Buck Steam Station to eliminate undesirable vegetation.
Herbicides are generally used along railways, pipelines, and the perimeter fence.
Herbicides are also applied, as needed, in the gravel parking lots, switchyard, laydown
areas, yard sumps, transformers, trailers, and the intake structure. The discharge of
herbicides are covered under the NPDES general permit NCG560000. Records are
retained at the facility documenting the areas treated, and the type and amount of
herbicides used.

Outfall SW075 (Drainage Area 75) (currently included in NCS000578)
Discharge Structure: 30-inch-diameter CMP
Location: Approximately 150 feet east of yard sump, outside of station
fence.
Coordinates: 35" 42' 49" N 800 22' 22" W
Drainage Area: 36.3 acres
Impervious Area: 13.4 acres
Area Description
The drainage area for SW075 is comprised of a gravel roadway, gravel-surfaced areas
surrounding part of a paved roadway, and grassed areas. The drainage area contains
approximately 250 linear feet of gravel roadway. The area at the south end of the drainage area
includes the maintenance yard and facility for the Buck site and is primarily a gravel lot.
Significant Materials/Activities
Mineral oil, ammonia, raw water chemical treatment
Outfall 001 (currently included in NCS000554)
Discharge Structure: 48 inch diameter CMP
Coordinates: 35 42' 30" N 80 22'40" W
Industrial Use Drainage Area: 18.9 Acres
Approximate Impervious Area: 10.8 acres
Accessibility: Accessible
Area Description
The industrial use area surrounding the CTCC facility covers approximately 14 Acres. This area
is comprised primarily of building roofs with asphalt pavement or gravel surface areas
surrounding the buildings. Included within this drainage area are some minor vegetated areas
located east of the cooling tower and in the vicinity of the water treatment facility.
The drainage area includes two gas turbine buildings, two heat recovery steam (HRSG)
buildings, one stream turbine building, one water treatment building, one auxiliary boiler
building, one cooling tower structure, two chiller buildings, one administration/control/warehouse
building, a raw water treatment facility, several large transformers, a power distribution center,
an emergency diesel generator, three large water tanks, one large ammonia tank, an oil/water
separator, an oil storage building and the station consolidated wastewater sump.
All roof drains and all stormwater runoff from external paved areas enters catch basins that
discharge via subsurface piping into the stormwater detention pond located immediately west of
the CTCC. All internal building floor drains discharge either directly into the station consolidated
wastewater sump or into the oil/water separator that subsequently discharges into the sump. All
transformer containments discharge into the detention pond. All other open containments,
including tanker unloading stations, discharge directly into the detention pond. Most covered
containments at the station are non-discharge containments.

Significant Materials/Activities
Lube Oil: Both Gas and turbine buildings contain one 4,500-gallon lube oil tank. The tanks
are located within concrete containments. The steam turbine building contains
one lube oil tank within concrete containment with an open drain to the oil/water
separator.
Diesel Fuel: The emergency diesel generator enclosure contains 550 gallons of diesel fuel
located within a double-walled container integral with the generator.
Mineral Oil: Various quantities of mineral oil are stored inside two gas turbine main step-up
transformers, the two, gas turbine auxiliary transformers, the steam turbine main
set-up transformer, and five excitation transformers. All of these transformers
are located outside within locked-closed concrete containments that drain to the
detention pond.
Ammonia: One 20,000-gallon ammonia tank is located on the western side of the facility.
The tank is located within an open concrete containment with a valved drain to
the consolidated wastewater sump. A sloped and curbed concrete unloading
pad is located adjacent to the tank and has a locked-closed valved drain to the
consolidated detention pond.
One 300-gallon ammonia tank is located inside the steam turbine Building. One
300-gallon ammonia tank is located inside the aux boiler Building. The tanks are
within a concrete containment basin with an open drain to the oil/water seperator.
Chemicals: The raw water treatment facility contains one sodium hypochlorite tan, one ferric
sulfate tank,.and one caustic tank. The tank is located under a common shed
within a dead end covered concrete containment basins. A sloped and curbed
concrete chemical unloading pad is located adjacent to the shed and has an
open drain to the detention pond.
The cooling tower has an adjacent chemical fed skid that contains one sodium
hypochlorite tank, one dispersant tank, one micro biocide tote, and one water
treatment tote. The four containers are located under a common shed within a
dead end covered concrete containment basins. A sloped and curbed concrete
chemical unloading pad is located adjacent to the shed and has an open drain to
the detention pond.
The water treatment building is a fully enclosed structure that contains one
sodium hypochlorite tank, one sodium bisulfite tank, one sodium hydroxide tank,
one RO citric acid tote and one RO anti-scalant tote. All containers are located
within dead end concrete containments. The building floor drains discharge into
the consolidated wastewater sump.
The Auxiliary Boiler Building is a fully enclosed structure that contains one 19%
ammonia tote and one Eliminox tote. The containers are located within dead end
concrete containments.

The gas filter skid contains one condensate tank located within an open metal
containment bin with an open drain to the consolidated wastewater sump.
Two phosphate skids are enclosed in a building and located adjacent to the
HRSG buildings. These containers are located within concrete containments
with open drains to the consolidated wastewater sump. One small gas
condensate tote is located on the east side of each HRSG building.
Discharge Controls
All stormwater runoff from the CTCC station (outfall 001) eventually discharges into a
stormwater detention pond located immediately west of the facility. The pond outlet works are
comprised of a 60-inch CMP riser and 48-inch CMP barrel. The pond is dewatered by a small
diameter dewatering orifice at the bottom of the 60-inch riser. In the event of any chemical or
petroleum release into the stormwater drainage system the small orifice can be quickly covered
or blocked to contain the release within the detention pond.
The discharge end of the 48-inch CMP is designated as Outfall 001. Stormwater discharging
from SW001 enters a riprap lined channel that routes flow to an existing 24-inch CMP beneath
the station access road. The discharge eventually enters the Yadkin River west of the CTCC.

Buck Station
Stormwater Permit Renewal Application
Attachment 12
Recission Request Form

FOR AGENCY USE ONLY
Assigned to:
ARO FRO MRO RRO WARO WIRO WSRO
Division of Energy, Mineral, and Land Resources Land Quality Section
National Pollutant Discharge Elimination System
Rescission Request Form
Please fill out and return this form if you no longer need to maintain your NPDES stormwater permit.
Directions: Print or type all entries on this application form. Send the original,signed application to: NCDEMLR
Stormwater Program, 1612 Mail Service Center, Raleigh, INC 27699-1612. The submission of this form does not
guarantee recission of your NPDES stormwater permit. Prior to the recission of your NPDES stormwater permit, a
site inspection will be conducted.
1. Owner/Operator(to whom all permit correspondence will be mailed):
Name of legal organizational entity: Legally responsible person as signed in Item(4)below:
Duke Energy Carolinas, Inc Kris Eisenrieth
Street address: City: State and zip code:
1385 Dukeville Rd Salisbury NC 28146
Telephone number: Email address:
704,630.3015 [e-mail]
2. Industrial Facility(facility requesting rescission):
Facility name:
Buck Steam Station
Street address:
1385 Dukeville Rd
City: State: Zip Code: County:
Salisbury NC 28146 Rowan
Permit Number to which this request applies:
NGS000578
3. Reason for rescission Request
This is required information.Attach separate sheets if necessary.
El Facility is closed or closing.All industrial activities have ceased such that no discharges of stormwater are contaminated
by exposure to industrial activities or materials.
Date closed/closing: March 19, 2018
Il Facility sold.
Sold to:
On date:
I]Other(please explain):

4. Applicant Certification:
North Carolina General Statute 143-215.613(i) provides that: Any person who knowingly makes any false statement,
representation, or certification in any application,record, report, plan,or other document filed or required to be maintained
under this Article or a rule implementing this Article. . .shall be guilty of a Class 2 misdemeanor which may include a fine not
to exceed ten thousand dollars($10,000). 1 hereby request exclusion from NPDES stormwater permitting.
under penalty of law, I certify that:
t] I, as an authorized representative, hereby request recission of coverage under the NPDES stormwater Permit for the
subject facility. I am familiar with the information contained in this request and to the best of my knowledge and belief
such information is true,complete,and accurate.
Printed Name of Person Signing: Kris Eisenrieth
Title: General Manager II - Regulated Stations
z4 2oz3
(Signa ure of Applicant) (Date Signed)
Mail the entire package to: DEMLR—Stormwater Program
Department of Environmental Quality
1612 Mail Service Center
Raleigh, NC 27699-1612
Page 2 of 2

Buck Station
Stormwater Permit Renewal Application
Attachment 13
Fish Tissue Monitoring Results

Fish Tissue Monitoring of the Yadkin River
and High Rock lake Near Buck Combined
Cycle Station (2018-2022)
Buck Combined Cycle Station
Salisbury, North Carolina
NPDES Permit # NCO004774
Duke Energy Water Resources
Huntersville, NC 28078
January 2023
DUKE
ENERGY®

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
Contents
1 Introduction and Background......................................................................................................1
2 Methods.....................................................................................................................................1
2.1 Study Site...........................................................................................................................................1
2.2 Field Collection..................................................................................................................................2
2.3 Laboratory Analysis...........................................................................................................................3
3 Results and Discussion................................................................................................................3
3.1 Arsenic...............................................................................................................................................4
3.2 Selenium............................................................................................................................................4
3.3 Mercury.............................................................................................................................................4
4 Summary....................................................................................................................................6
5 References.................................................................................................................................6
Tables
Table 3-1. Numbers and total length ranges(mm)of different species of fish collected for element
analyses in the three sampling areas of the Yadkin River and High Rock Lake during 2018-2022.3
Figures
Figure 2-1. Sampling areas for monitoring trace elements in fish tissue within the Yadkin River and High
RockLake..........................................................................................................................................2
Figure 3-1. Box plots of trace element analysis of fish muscle tissue for sunfish and black bass collected
from three areas of the Yadkin River and High Rock Lake during 2018-2022. Boxes and whiskers
show the 10th, 25th,50th,75th,and 90th percentiles. Individual outliers are represented by
points.Values under each element are USEPA screening values for recreational anglers. ............5
Appendices
Appendix A Arsenic,selenium,and mercury concentrations(fresh weight) in axial muscle of fish from
the Yadkin River and High Rock Lake during 2018-2022
i

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
1 Introduction and Background
Duke Energy Carolinas(DEC)owns and operates the Buck Combined Cycle Station (Buck) located on the
Yadkin River in Rowan County,Salisbury, North Carolina.The National Pollutant Discharge Elimination
System (NPDES)Wastewater Permit for Buck(No. NC0004774,Section C.12) requires DEC to annually
conduct trace elements (specifically arsenic,selenium,and mercury) monitoring in fish muscle tissue in
accordance with a study plan approved by the North Carolina Department of Environmental Quality
(NCDEQ). Monitoring is required due to the discharge of waters from a coal ash basin associated with
the previous coal-fired steam plant at the site.A study plan was originally submitted and approved in
2013 (Duke Energy 2013),and an updated study plan was submitted and approved in 2019 (Duke Energy
2019).
2 Methods
2.1 Study Site
Fish were collected from two areas on the Yadkin River and one in upper High Rock Lake (Figure 1-1)for
trace element analysis of muscle tissue.Area UP was located at least 3.2 km upstream of the Buck ash
basin discharge to serve as a reference to monitor background trace element concentrations in fish
muscle tissue.Area DI was located between 0.8 km and 2.0 km downstream from the Buck ash basin
discharge to monitor potential near-field uptake of trace elements in fish muscle tissue.Area DN was
located in upper High Rock Lake, approximately 8.0 km downstream of the ash basin discharge,to
monitor far-field uptake of trace elements in fish muscle tissue.
1

Fish Tissue Monitoring oft he Yadkin Rivera nd High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
N
A
UP Dll
BUCK Dolma 002
COMBINED ourc�uam
CYCI.E
STATION
F'
fZ Trace Element Fishing Area
A Duke Facility Outfall
0 25 5
Kilometers
Buck Combined
Cycle Station
DUKE
ENERGY.
Figure 2-1. Sampling areas for monitoring trace elements in fish tissue within the Yadkin River and
High Rock Lake.
2.2 Field Collection
Fish were collected for trace element tissue monitoring following the appropriate Duke Energy
procedures under Duke Energy's North Carolina Biological Laboratory Certification (Huntersville, NC
certification 008). Fish were collected using boat electrofishing, identified to species, measured for total
length to the nearest millimeter,weighed to the nearest gram, and marked with a unique tag identifier.
Fish were then placed in a labeled (sample date, sample location,facility, etc.) bag on ice while in the
field. Bags were sealed and transferred to a deep freezer at the end of the sampling day until processed
for analysis.
Sunfish (Lepomis) and black bass (Micropterus) were targeted for collection based on prior sampling
experience, likely availability, potential for human consumption, and general trophic level. Other similar
genera of fish were collected when the primary target genera were unavailable. Duke Energy personnel
collected six individuals of each taxa from each sampling area. Individuals retained for analysis were
those considered of sufficient size for human consumption (>_6a g). As recommended by the US
Environmental Protection Agency (USEPA),fish were retained such that the size of the smallest
2

Fish Tissue Monitoring of the Yadkin River and High Rock lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
individual would not be less than 75%of the total length of the largest fish within each genus group
when possible (USEPA 2000).
2.3 Laboratory Analysis
Fish were processed for metals analysis at the Duke Energy Trace Element Laboratory located in New
Hill, NC. Fish were thawed and skeletal muscle was fileted off using a carbon-steel scalpel. Muscle tissue
from each individual fish was homogenized,weighed to the nearest 0.001 g,completely dried in a
desiccator.The dried weight was recorded and used to calculate a dry weight to fresh weight ratio for
that fish.Approximately 0.1 g of dried tissue was analyzed for each fish using X-ray fluorescence.Quality
control was achieved utilizing analytical standards, replicates,and certified reference materials.
3 Results and Discussion
During the study period (2018-2022), 180 individuals representing eight species were captured and
analyzed from the Yadkin River and High Rock Lake (Table 3-1).These species included Alabama Bass
Micropterus hensholli, Largemouth Bass M.salmoides, Black Crappie Pomoxis nigromaculatus, Bluegill
Lepomis macrochirus, Green Sunfish L. cyanellus, Redbreast Sunfish L. ouritus, Redear Sunfish L.
microlophus,and Warmouth L. gulosus.A full list of individual fish and associated trace element
concentrations is presented in Appendix A.
Table 3-1. Numbers and total length ranges(mm)of different species of fish collected for element
analyses in the three sampling areas of the Yadkin River and High Rock Lake during 2018-2022.
UP DI DN
Total
Number
Total length Total length
Number range range Number length
range
Alabama Bass 2 293-410 — —
Black bass Largemouth
26 276-499 30 247-515 30 288-471
(Micropterus) Bass
Black Crappiel 2 272-278 — —
Bluegill 22 140-178 20 142-176 28 146-183
Green Sunfish — 1 175 —
Sunfish Redbreast
— 1 177 1 171
(Lepomis) Sunfish
Redear Sunfish 7 159-183 8 155-250 1 186
Warmouth 1 191 — —
1 Black Crappie were kept as a surrogate for black bass because these species are in the same feeding guild(NCDENR 2006).
3

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
3.1 Arsenic
All fish collected during 2018-2022 were below the USEPA screening value for recreational anglers of
1.2 µg/g(fresh weight)for arsenic(USEPA 2000; Figure 3-1).
3.2 Selenium
All fish collected during 2018-2022 were below USEPA screening value for recreational anglers of 20
µg/g(fresh weight)for selenium (USEPA 2000; Figure 3-1).
3.3 Mercury
Sunfish collected during 2018-2022 were below the USEPA screening value for recreational anglers of
0.4 µg/g(fresh weight)for mercury(USEPA 2000; Figure 3-1).Of the 88 black bass sampled during the
five-year study period, one exceeded the mercury screening value. Mercury concentrations generally
increased with fish size, regardless of the collection area.This individual was in the top quartile of size
for all black bass collected.Therefore,this elevated mercury concentration was a function of
bioaccumulation.
4

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
Sunfish Black bass
1.0 1.a
Arsenic Arsenic
0.$
1 2 pglg 0.8 1.2 N919
+
a
0.6 * 0.6
*
•
0.4 0.4 •
0.2 0-2
0.0 0.0
UP DI DN UP DI DN
1.4 1.4
Selenium Selenium
1-2 20 µ9r9 12 20 Nglg
•
1.0 1.0
0.8 0.8
w
0 0.6 0.6 •
CO
:= 0.4 0.4
c0 02 0-2
0.0 1 0.0
UP DI DN UP DI DN
0.5 a.5
Mercury Mercury
R-4 Y919 • 0.4 p9lg
0.4 0.4
•
03 0.3
•
0.2 • 02
0.1 � � • 0,1
4
00 D9
UP DI DN UP DI DPI
Figure 3-1. Box plots of trace element analysis of fish muscle tissue for sunfish and black bass collected
from three areas of the Yadkin River and High Rock Lake during 2018-2022. Boxes and whiskers show
the 10th, 25th,50th, 75th,and 90th percentiles. Individual outliers are represented by points. Values
under each element are U5EPA screening values for recreational anglers.
5

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
4 Summary
All fish collected during the 2018-2021 study period were below the USEPA screening levels for
recreational anglers for arsenic and selenium. One black bass exceeded the screening level for mercury.
However, mercury concentrations in black bass collected at the DI area were not elevated compared to
those collected upstream of the Buck ash basin discharge when accounting for size of fish.These
patterns match samples reported from the same areas in 2014 (Duke Energy 2014).
5 References
Duke Energy.2013.Trace elements monitoring in fish tissue study plan. Duke Energy Corporation.
Charlotte, NC.
Duke Energy.2014.Arsenic,selenium,and mercury monitoring in fish muscle tissue from upper High
Rock Lake, NC. Duke Energy Corporation.Charlotte, NC.
Duke Energy.2019. Fish tissue monitoring of the Yadkin River. Duke Energy Corporation.Charlotte, NC.
NCDENR. 2006.Standard operating procedure. Biological monitoring.Stream fish community
assessment program. Environmental Sciences Section, Division of Water Quality, North Carolina
Department of Environmental and Natural Resources. Raleigh, NC.
USEPA.2000.Guidance for assessing chemical contaminant data for use in fish advisories.Vol. 1. Fish
sampling and analysis.Third edition. EPA 823-B-00-007. United States Environmental Protection
Agency,Office of Water, Washington, DC.
6

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
Appendix A
Arsenic, selenium, and mercury concentrations (fresh
weight) in axial muscle of fish from the Yadkin River and
High Rock Lake during 2018-2022
Dry-to-
fresh
Collection Length Weight As Se Hg weight
Fish species Location month (mm) (g) W/O (µg/g) W/O ratio
Bluegill UP November 2018 140 52 0.16 0.49 <0.06 0.20
Bluegill UP November 2018 178 120 0.14 0.33 <0.06 0.19
Bluegill UP November 2018 165 86 0.15 0.31 <0.06 0.20
Bluegill UP November 2018 178 112 0.15 0.39 0.07 0.20
Bluegill UP November 2018 159 75 0.14 0.36 <0.06 0.20
Bluegill UP November 2018 144 54 0.15 0.48 <0.06 0.20
Alabama Bass UP November 2018 410 972 0.20 0.31 0.23 0.24
Black Crappie UP November 2018 278 324 0.23 0.23 <0.06 0.20
Black Crappie UP November 2018 272 293 0.18 0.32 <0.06 0.20
Largemouth Bass UP November 2018 499 2403 0.17 0.31 0.30 0.20
Largemouth Bass UP November 2018 348 719 0.16 0.31 0.12 0.20
Largemouth Bass UP November 2018 411 1098 0.17 0.34 0.19 0.20
Bluegill DI November 2018 152 60 0.13 0.40 0.11 0.17
Bluegill DI November 2018 152 62 0.13 0.52 <0.05 0.17
Bluegill DI November 2018 153 60 0.13 0.46 0.06 0.17
Bluegill DI November 2018 167 75 0.17 1.18 <0.06 0.20
Bluegill DI November 2018 158 75 0.14 0.70 0.06 0.19
Bluegill DI November 2018 158 70 0.14 0.36 <0.05 0.18
Largemouth Bass DI November 2018 452 1723 0.17 0.48 0.35 0.20
Largemouth Bass DI November 2018 343 669 0.14 0.40 0.15 0.19
Largemouth Bass DI November 2018 407 1131 0.17 0.62 0.18 0.20
Largemouth Bass DI November 2018 430 1238 0.19 0.34 0.22 0.20
Largemouth Bass DI November 2018 415 1156 0.19 0.32 0.15 0.21
Largemouth Bass DI November 2018 383 947 0.15 0.34 0.13 0.20
Bluegill DN October 2018 176 98 0.13 0.20 <0.05 0.17
Bluegill DN October 2018 170 83 0.13 0.22 <0.05 0.17
Bluegill DN October 2018 164 74 0.14 0.26 <0.06 0.20
Bluegill DN October 2018 155 64 0.14 0.21 <0.06 0.19
Bluegill DN October 2018 152 58 0.16 0.32 <0.06 0.20
Bluegill DN October 2018 152 57 0.15 0.23 <0.06 0.20
Largemouth Bass DN October 2018 288 315 0.20 0.22 <0.06 0.20
Largemouth Bass DN October 2018 319 399 0.23 0.21 <0.06 0.20
Largemouth Bass DN October 2018 374 752 0.20 0.26 0.07 0.21
Largemouth Bass DN October 2018 378 775 0.22 0.25 0.11 0.22
Largemouth Bass DN October 2018 306 371 0.20 0.25 <0.06 0.21
Largemouth Bass DN October 2018 334 516 0.17 0.23 <0.06 0.20
Bluegill UP September 2019 166 90 0.14 0.53 0.08 0.19
Bluegill UP September 2019 153 65 0.14 0.53 0.08 0.19
Bluegill UP September 2019 148 60 0.13 0.34 <0.06 0.20
Bluegill UP September 2019 153 64 0.14 0.44 0.06 0.19
A-1

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
Dry-to-
fresh
Length Weight As Se Hg weight
Fish species Location Sample date (mm) (g) (µg/g) (µg/g) (µg/g) ratio
Bluegill UP September 2019 163 72 0.14 0.31 <0.05 0.18
Bluegill UP September 2019 158 76 0.13 0.43 0.05 0.18
Largemouth Bass UP September 2019 328 428 0.15 0.35 0.09 0.20
Largemouth Bass UP September 2019 371 730 0.17 0.35 0.11 0.21
Largemouth Bass UP September 2019 457 1367 0.17 0.35 0.22 0.21
Largemouth Bass UP September 2019 427 1196 0.18 0.37 0.32 0.21
Largemouth Bass UP September 2019 338 496 0.18 0.27 0.10 0.20
Largemouth Bass UP September 2019 439 1273 0.14 0.25 0.27 0.16
Bluegill DI September 2019 157 69 0.13 0.54 0.06 0.19
Redear Sunfish DI September 2019 250 258 0.13 0.68 0.08 0.19
Redear Sunfish DI September 2019 207 140 0.16 0.70 0.07 0.20
Redear Sunfish DI September 2019 202 133 0.16 0.59 0.08 0.20
Redear Sunfish DI September 2019 244 252 0.17 0.56 0.13 0.20
Redear Sunfish DI September 2019 220 195 0.15 0.68 0.09 0.20
Largemouth Bass DI September 2019 344 534 0.17 0.37 0.09 0.20
Largemouth Bass DI September 2019 293 342 0.15 0.38 0.10 0.20
Largemouth Bass DI September 2019 305 419 0.17 0.50 0.09 0.20
Largemouth Bass DI September 2019 300 346 0.15 0.40 0.12 0.20
Largemouth Bass DI September 2019 274 292 0.15 0.34 0.10 0.20
Largemouth Bass DI September 2019 294 296 0.12 0.27 0.07 0.15
Bluegill DN May 2019 170 94 0.15 0.29 0.07 0.18
Bluegill DN May 2019 173 115 0.18 0.28 <0.04 0.19
Bluegill DN May 2019 175 106 0.13 0.45 <0.05 0.19
Bluegill DN May 2019 169 85 0.14 0.24 <0.05 0.18
Bluegill DN May 2019 169 82 0.15 0.25 0.06 0.18
Bluegill DN May 2019 169 92 0.14 0.28 <0.04 0.18
Largemouth Bass DN May 2019 411 1017 0.19 0.24 0.12 0.20
Largemouth Bass DN May 2019 381 726 0.25 0.22 0.13 0.20
Largemouth Bass DN May 2019 416 948 0.16 0.17 0.07 0.15
Largemouth Bass DN May 2019 405 1010 0.20 0.24 0.14 0.20
Largemouth Bass DN May 2019 410 1009 0.22 0.23 0.12 0.19
Largemouth Bass DN May 2019 380 774 0.24 0.25 0.09 0.21
Bluegill UP June 2020 143 65 0.15 0.63 <0.06 0.20
Bluegill UP October 2020 177 108 0.14 0.53 <0.06 0.19
Bluegill UP October 2020 173 95 0.13 0.48 <0.05 0.18
Bluegill UP October 2020 163 85 0.15 0.38 0.12 0.20
Redear Sunfish UP June 2020 164 78 0.15 0.48 0.08 0.19
Redear Sunfish UP October 2020 159 68 0.19 0.56 <0.06 0.20
Largemouth Bass UP June 2020 420 1410 0.19 0.28 <0.06 0.20
Largemouth Bass UP June 2020 487 1823 0.18 0.28 <0.06 0.20
Largemouth Bass UP June 2020 381 880 0.18 0.30 <0.06 0.21
Largemouth Bass UP June 2020 447 1355 0.17 0.30 0.09 0.20
Largemouth Bass UP June 2020 447 13SS 0.18 0.35 <0.06 0.20
Largemouth Bass UP October 2020 460 1460 0.13 0.26 0.05 0.15
Bluegill DI June 2020 163 83 0.12 0.43 <0.06 0.19
Bluegill DI June 2020 167 99 0.14 0.53 0.06 0.20
Bluegill DI June 2020 150 69 0.14 0.31 0.06 0.19
Bluegill DI June 2020 150 67 0.13 0.53 <0.05 0.18
Bluegill DI June 2020 153 82 0.14 0.45 0.21 0.20
A-2

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
Dry-to-
fresh
Length Weight As Se Hg weight
Fish species Location Sample date (mm) (g) (µg/g) (µg/g) (µg/g) ratio
Bluegill DI June 2020 143 63 0.17 0.34 <0.06 0.20
Largemouth Bass DI June 2020 395 1082 0.18 0.34 <0.06 0.20
Largemouth Bass DI June 2020 310 476 0.19 0.34 0.10 0.20
Largemouth Bass DI June 2020 331 601 0.19 0.34 <0.06 0.21
Largemouth Bass DI June 2020 387 824 0.20 0.32 0.09 0.21
Largemouth Bass DI June 2020 314 523 0.20 0.32 0.13 0.21
Largemouth Bass DI June 2020 413 1362 0.17 0.34 <0.06 0.20
Bluegill DN May 2020 163 93 0.15 0.28 0.06 0.18
Bluegill DN May 2020 169 99 0.19 0.34 <0.06 0.20
Bluegill DN May 2020 170 102 0.15 0.26 0.07 0.18
Bluegill DN May 2020 150 72 0.16 0.26 0.09 0.20
Bluegill DN May 2020 150 66 0.17 0.46 <0.06 0.21
Bluegill DN May 2020 153 72 0.15 0.27 <0.06 0.19
Largemouth Bass DN May 2020 469 1670 0.18 0.26 <0.06 0.20
Largemouth Bass DN May 2020 460 1488 0.17 0.26 <0.06 0.20
Largemouth Bass DN May 2020 391 960 0.20 0.25 <0.06 0.21
Largemouth Bass DN May 2020 452 1218 0.15 0.31 <0.05 0.18
Largemouth Bass DN May 2020 471 1475 0.18 0.25 <0.06 0.19
Largemouth Bass DN May 2020 425 1158 0.20 0.25 <0.06 0.21
Bluegill UP June 2021 153 71 0.13 0.48 0.06 0.19
Bluegill UP June 2021 154 78 0.15 0.43 <0.06 0.20
Bluegill UP June 2021 142 65 0.15 0.56 <0.06 0.20
Redear Sunfish UP June 2021 180 113 0.14 0.95 <0.06 0.19
Redear Sunfish UP June 2021 172 100 0.14 0.64 <0.06 0.20
Redear Sunfish UP June 2021 162 97 0.17 0.49 <0.06 0.20
Largemouth Bass UP June 2021 464 1891 0.17 0.32 0.29 0.21
Largemouth Bass UP June 2021 422 1247 0.17 0.29 0.17 0.21
Largemouth Bass UP June 2021 445 1478 0.16 0.33 0.14 0.21
Largemouth Bass UP June 2021 443 1436 0.20 0.27 0.33 0.20
Largemouth Bass UP June 2021 392 1000 0.17 0.33 0.12 0.21
Largemouth Bass UP June 2021 366 735 0.15 0.38 0.12 0.20
Bluegill DI June 2021 142 61 0.13 0.43 <0.06 0.19
Bluegill DI June 2021 155 82 0.14 0.42 0.09 0.20
Bluegill DI June 2021 149 69 0.16 0.39 <0.06 0.19
Bluegill DI June 2021 158 86 0.16 0.37 <0.06 0.19
Redbreast Sunfish DI June 2021 177 129 0.17 0.50 0.07 0.21
Redear Sunfish DI June 2021 162 79 0.16 0.60 <0.06 0.20
Largemouth Bass DI June 2021 410 1081 0.20 0.36 0.23 0.21
Largemouth Bass DI June 2021 405 1151 0.15 0.25 0.09 0.18
Largemouth Bass DI June 2021 456 1520 0.18 0.36 0.29 0.20
Largemouth Bass DI June 2021 433 1238 0.21 0.43 0.16 0.21
Largemouth Bass DI June 2021 474 1835 0.19 0.38 0.17 0.21
Largemouth Bass DI June 2021 480 1677 0.18 0.35 0.31 0.21
Bluegill DN April2021 183 128 0.16 0.30 0.09 0.20
Bluegill DN Apri12021 175 113 0.15 0.31 0.07 0.20
Bluegill DN Apri12021 166 94 0.18 0.25 <0.06 0.20
Bluegill DN April 2021 165 91 0.16 0.48 <0.06 0.20
Bluegill DN April 2021 166 102 0.16 0.28 0.06 0.18
Redear Sunfish DN April 2021 186 141 0.16 0.31 <0.06 0.21
A-3

Fish Tissue Monitoring of the Yadkin River and High Rock Lake Near Buck Combined Cycle Station(2018-2022)
Buck Combined Cycle Station
Dry-to-
fresh
Length Weight As Se Hg weight
Fish species Location Sample date (mm) (g) (µg/g) (µg/g) (µg/g) ratio
Largemouth Bass DN April 2021 460 1500 0.19 0.23 0.18 0.20
Largemouth Bass DN April 2021 340 533 0.21 0.24 0.12 0.20
Largemouth Bass DN April 2021 382 897 0.20 0.24 0.13 0.20
Largemouth Bass DN April 2021 405 1006 0.21 0.23 0.12 0.20
Largemouth Bass DN April 2021 440 1055 0.22 0.25 0.19 0.21
Largemouth Bass DN April 2021 470 1744 0.15 0.21 0.29 0.16
Bluegill UP June 2022 163 92 0.15 0.51 <0.06 0.20
Bluegill UP June 2022 150 78 0.16 0.41 <0.06 0.20
Bluegill UP June 2022 154 74 0.18 0.39 <0.06 0.20
Redear Sunfish UP June 2022 183 103 0.13 0.80 <0.06 0.20
Redear Sunfish UP June 2022 176 101 0.18 0.67 <0.06 0.21
Warmouth UP June 2022 191 153 0.14 0.37 0.14 0.19
Alabama Bass UP June 2022 293 312 0.19 0.29 0.08 0.20
Largemouth Bass UP June 2022 359 611 0.19 0.26 0.14 0.20
Largemouth Bass UP June 2022 292 398 0.20 0.30 <0.06 0.21
Largemouth Bass UP June 2022 336 689 0.18 0.32 0.09 0.21
Largemouth Bass UP June 2022 276 289 0.18 0.37 0.07 0.21
Largemouth Bass UP June 2022 362 712 0.17 0.37 0.13 0.21
Bluegill DI June 2022 148 69 0.14 0.39 0.06 0.20
Bluegill DI June 2022 151 76 0.18 0.30 <0.06 0.19
Bluegill DI June 2022 176 98 0.14 0.33 <0.06 0.19
Green Sunfish DI June 2022 175 112 0.13 0.23 0.10 0.18
Redear Sunfish DI June 2022 155 72 0.16 0.63 0.06 0.19
Redear Sunfish DI June 2022 225 231 0.17 0.55 0.09 0.21
Largemouth Bass DI June 2022 515 2206 0.19 0.35 0.37 0.20
Largemouth Bass DI June 2022 451 1224 0.17 0.48 0.25 0.19
Largemouth Bass DI June 2022 447 1339 0.23 0.32 0.14 0.20
Largemouth Bass DI June 2022 451 1224 0.21 0.36 0.43 0.22
Largemouth Bass DI June 2022 460 1495 0.17 0.37 0.26 0.19
Largemouth Bass DI June 2022 289 375 0.19 0.31 <0.06 0.20
Bluegill DN May 2022 146 67 0.15 0.28 0.06 0.19
Bluegill DN May 2022 162 92 0.16 0.28 0.07 0.19
Bluegill DN May 2022 182 118 0.16 0.29 0.07 0.19
Bluegill DN May 2022 175 114 0.18 0.27 <0.06 0.20
Bluegill DN May 2022 152 82 0.15 0.25 <0.05 0.18
Redbreast Sunfish DN May 2022 171 105 0.15 0.43 0.07 0.22
Largemouth Bass DN May 2022 441 1156 0.26 0.25 0.25 0.21
Largemouth Bass DN May 2022 468 1447 0.24 0.23 0.23 0.20
Largemouth Bass DN May 2022 444 1156 0.17 0.29 0.29 0.19
Largemouth Bass DN May 2022 425 1109 0.17 0.28 0.17 0.20
Largemouth Bass DN May 2022 340 539 0.17 0.30 0.10 0.20
Largemouth Bass DN May 2022 402 960 0.20 0.25 0.09 0.21
A-4

Young, Brianna A
From: Young, Brianna A
Sent: Thursday, February 2, 2023 10:47 AM
To: Bednarcik, Jessica L
Cc: Cahoon, Steve
Subject: Buck Steam Station (NCS000578) and Buck Combined Cycle Station (NCS000554)
Good morning,
The Division of Energy, Mineral, and Land Resources (DEMLR) Stormwater Permitting Program
acknowledges receipt of your renewal application for coverage under NPDES Permit Number NCS000554.
Please continue to comply with all conditions and monitoring requirements in your current NPDES stormwater
permit. As long as you have submitted a complete renewal request package and maintain compliance with those
permit conditions, stormwater discharges from this facility are authorized by that permit until the Division
issues a renewal permit or notifies you of an alternative action. The renewal package also included a rescission
request for NCS000578. These requests will be reviewed at the same time. Please note that due to the current
backlog and staff shortages, review of this permit renewal is not scheduled until 2024, however this schedule is
subject to change. Please let me know if you have any questions in the interim.
Thank you,
Brianna Young, MS(she/her/hers)
Industrial Individual Permits Coordinator
Stormwater Permitting 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
,�: D_ E �
�
NORTH CAROLINA
Department of Environmental Duality
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. 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.
1