NCS000548_2021 DMR_20220128

DUKE
ENERGY.
January 28, 2022
NC Dept. of Environmental Quality
Attention: Central Files
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
DUKE ENERGY CORPORATION
Marshall Steam Station
8320 East NC Highway 150
Terrell, NC 28682
Subject: Duke Energy Carolinas, LLC
NPDES Stormwater Discharge Monitoring Report for:
Marshall Steam Station - NCS000548 — Catawba County
Year 1 Period 4 monitoring
Dear Sir or Madam:
In accordance with Part E-2. of the above referenced NPDES Stormwater permit, the original and
one copy of the Stormwater Discharge Outfall (SDO) monitoring reports for Period 4 Year 1 is
attached.
Representative samples were not collected from stormwater outfalls sitewide during the fourth
quarter (Period 4) of 2021 due to NO FLOW conditions at the facility. A total of four measurable
storm events occurred over this period that met the following criteria: A) the event initiated
outside of normal business hours during the week; B) the event initiated on weekend days; or
C) the event occurred inside the 48-hour period from a previous unqualified storm event. An
additional seven rain events occurred during weekdays but failed to generate sufficient discharge
for sampling. Therefore, this report is submitted as formal notification of the NO FLOW conditions
at the site for Period 4 2021.
Currently stormwater outfalls SW002, SWO03 and SWO07 remain in Tier 1 status resulting from a
benchmark exceedance as reported from the June 7, 2021 monitoring event. A Tier 1 response
was completed, and corrective actions implemented. Quarterly good housekeeping and
maintenance inspections was completed on December 27, 2021. Reports are on file in the facility
SWPPP.
Please direct any correspondence or questions concerning the Marshall Steam Station NPDES
Stormwater Program to Scott La Sala (828-478-7820) or Don Safrit at [phone].
6*1
JE
G
Marshall Steam Station
attachment
www.duke-energy.com

be w/attachment: Scott La Sala
Don Safrit
File: CCP EHS
Uploaded via DEMLR SW website
DUKE ENERGY CORPORATION
Marshall Steam Station
8320 East NC Highway 150
Terrell, NC 28682
www.duke-energy.com

NPDES PERMIT NO.: NCS000548
PERMIT STATUS: Active
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 002 NO DISCHARGE*: YES
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****No Reporting Reason: ENFRUSE =No Flow-Reuse/Recycle; ENVWTHR=No Visitation —Adverse Weather; NOFLOW=No Flow, HOLIDAY=NoVisitation—Holiday

NPDES PERMIT NO.: NCS000548 PERMIT VERSION: 2.0 PERMIT STATUS: Active
FACILITY NAME: Marshall Steam Station CLASS: SWNC COUNTY: Catawba
OWNER NAME: Duke Energy Carolinas LLC ORC: Not Required ORC CERT NUMBER: 1009764
GRADE: SWNC ORC HAS CHANGED: No
eDMR PERIOD: 12-2021 (December 2021) VERSION: 1.0 STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 002 NO DISCHARGE*: YES (Continue)
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****No Reporting Reason: ENFRUSE =No FlowReuse/Recycle; ENVWTHR=No Visitation —Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation Holiday

NPDES PERMIT NO.: NCS000548
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMRPERIOD: 12-2021 (December 202 1)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
PERMIT STATUS: Active
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 003 NO DISCHARGE*: YES
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****No Reporting Reason: ENFRUSE = No Flow-Reuse/Recycle; ENVWTHR=No Visitation— Adverse Weather; NOFLOW=No Flow; HOLIDAY=NoVisitation— Holiday

NPDES PERMIT NO.: NCS000548 PERMIT VERSION: 2.0 PERMIT STATUS: Active
FACILITY NAME: Marshall Steam Station CLASS: SWNC COUNTY: Catawba
OWNER NAME: Duke Energy Carolinas LLC ORC: Not Required ORC CERT NUMBER: 1009764
GRADE: SWNC ORC HAS CHANGED: No
eDMR PERIOD: 12-2021 (December 2021) VERSION: 1.0 STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 003 NO DISCHARGE*: YES (Continue)
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NPDES PERMIT NO.: NCS000548
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
PERMIT STATUS: Active
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 007 NO DISCHARGE*: YES
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NPDES PERMIT NO.: NCS000548
PERMIT STATUS: Active
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE:SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 007 NO DISCHARGE*: YES (Continue)
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**** No Reporting Reason: ENFRUSE = No Flow-Reuse/Recycle; ENVWTHR=No Visitation— Adverse Weather; NOFLOW No Flow; HOLIDAY=NoVisitation— Holiday

NPDES PERMIT NO.: NCS000548 PERMIT VERSION: 2.0 PERMIT STATUS: Active
FACILITY NAME: Marshall Steam Station CLASS: SWNC COUNTY: Catawba
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMR PERIOD: 12-2021 (December 2021)
ORC: Not Required ORC CERT NUMBER: 1009764
ORC HAS CHANGED: No
VERSION: 1.0
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 008 NO DISCHARGE*: YES
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****No Reporting Reason: ENFRUSE =No Flow-Reuse/Recycle; ENVWTHR=No Visitation —Adverse Weather; NOFLOW=No Flow, HOLIDAY=NoVisitation— Holiday

NPDES PERMIT NO.: NCS000548 PERMIT VERSION: 2.0 PERMIT STATUS: Active
FACILITY NAME: Marshall Steam Station CLASS: SWNC COUNTY: Catawba
OWNER NAME: Duke Energy Carolinas LLC ORC: Not Required ORC CERT NUMBER: 1009764
GRADE: SWNC ORC HAS CHANGED: No
eDMR PERIOD: 12-2021 (December 2021) VERSION: 1.0 STATUS: Certified
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NPDES PERMIT NO.: NCS000548
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE:SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
PERMIT STATUS: Active
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 012 NO DISCHARGE*: YES
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**** No Reporting Reason: ENFRUSE = No Flow-Reuse/Recycle; ENVWTHR=No Visitation— Adverse Weather; NOFLOW=No Flow; HOLIDAY=NoVisitation —Holiday

NPDES PERMIT NO.: NCS000548
PERMIT STATUS: Active
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE:SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 012A NO DISCHARGE*: YES
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NPDES PERMIT NO.: NCS000548
PERMIT STATUS: Active
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 022 NO DISCHARGE*: YES
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NPDES PERMIT NO.: NCS000548
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
PERMIT STATUS: Active
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 025 NO DISCHARGE*: YES
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** ** No Reporting Reason: ENFRUSE = No Flow-Reuse/Recycle; EN V WTHR = No Visitation — Adverse Weather; NOFLOW = No Flow; HOLIDAY = No Visitation — Holiday

NPDES PERMIT NO.: NCS000548
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
PERMIT STATUS: Active
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 026 NO DISCHARGE*: YES
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Grab
Grab
Grab
Grab
Grab
Grab
pH
TSS - Cone
ANTIMONY
As -TOTAL
BERYLIDM
BORON
CADMIUM
1TOT CR CONC
COPPER
24-dock
111n
12-dock
an
Y/BIN
1su
IngA
1.gA
m
1mg—/1
m
m
1-0
mgA
2
3
4
5
6
7
I
8
9
10
I
I
I
I I
I
I
11
u
13
14
I
I I
15
1
i
,16
17
18
�
19
20
21
_
11
1
1
1
I
I
F-
26
1
27 1
1
j
28
29
30
31
Monthly Average Limit:
Monthly Average:
Daily Maximum:
Daily Minimum:
**** No Reporting Reason: ENFRUSE =No Flow-Reuse/Recycle; ENVWTHR=No Visitation —Adverse Weather; NOFLOW = No Flow; HOLIDAY= No Visitation — Holiday

NPDES PERMIT NO.: NCS000548
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMR PERIOD: 12-2021 (December 2021)
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
PERMIT STATUS: Active
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS. Certified
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 026 NO DISCHARGE*: YES (Continue)
G
E
E
h
U
E w
U 1=
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O
d
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E
w
b
O
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C
O
m
5
a
C
Z
01051
COMER
01067
46521
01147
01077
01059
01091
uarterly
Quarterly
Quarterly
Q.-edy
Qu.,redyQuarterly
Quart fly
Quarterly
Grab
Grab
Grab
Recorder
Grab
Grab
Grab
Grab
LEAD
MERCURY -Cone
NICKEL
RAINFALL
SnTOTAL
SILVER
THALLHIM
ZINC
2400 clock Hra
2400 el..
Hra
YlBRV
m
nign
1rugn1¢ches
im9n
mgA
mg/l
mgn
11
I I
I
I
I
I
I
13
I
I
14
I i
6
I
I
7
1
9
10
11
12
13
14
I
1S
16
1
17
�
18
19
20
21
22
1
23
24
12-1
26
27
E2928
130
1
1
31
Monthly Average Lfmif:
Monthly Average:
Daily Maximum:
Daily Miaim =
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR—No Visitation —Adverse Weather; NOFLOW=No Flow; HOLIDAY=NoVisitation—Holiday

NPDES PERMIT NO.: NCS000548
FACILITY NAME: Marshall Steam Station
OWNER NAME: Duke Energy Carolinas LLC
GRADE: SWNC
eDMR PERIOD: 12-2021 (December 2021)
COMPLIANCE STATUS: Compliant
PERMIT VERSION: 2.0
CLASS: SWNC
ORC: Not Required
ORC HAS CHANGED: No
VERSION: 1.0
CONTACT PHONE #: [phone]
PERMIT STATUS: Active
COUNTY: Catawba
ORC CERT NUMBER: 1009764
STATUS: Certified
SUBMISSION DATE:
01/27/2022
ORC/Certifier Signature: Joseph Scott La Sala E-Mail:[e-mail] Phone #:[phone] Date
I certify that this report is accurate and complete to the best of my knowledge.
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances. A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances. The written submission shall be made as required by part ILE.6 of the
NPDES permit. /
er Signatu(e:�***
E-Mail:
Permittee Address: NC Hwy 150 Terrell NC 28682 Permit Expiration Date: 03/31/2026
11 ��'l2�7i I l��i 2dT.L
Phone #:
Date
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 managed 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.
LAB NAME: Duke Energy Analytical Lab
CERTIFIED LAB #: (NC) 248
PERSON(s) COLLECTING SAMPLES: J. Scott La Sala
CERTIFIED LABORATORIES
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for repotting data.
* No Flow/Discharge From Site: YES indicates that No Flow/Discharge occurred and, as a result, no data is reported for any parameter on the DMR for the
entire monitoring period.
* * ORC on Site?: ORC must visit facility and document visitation of facility as required per 15A NCAC 8G .0204.
* * * Signature of Permittee: If signed by other than the permittee, then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).