NCS000546_MONITORING REPORT_20201120

� DUKE
November 11, 2020
NCDEQ, Mooresville Regional Office
Attn: DEMLR Stormwater Program
610 East Center Ave., Suite 301
Mooresville, N.C. 28115
Subject: Duke Energy Carolinas, LLC
NPDES Storm Water Discharge Monitoring Report for:
Allen Steam Station — NCS000546 — Gaston County
Duke Energy Carolinas, LLC
Allen Steam Station
253 Plant Allen Rd.
Belmont, NC 28012
704 829-2587
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In accordance with Part III, E(2) of the above referenced NPDES Storm Water permit, the original and one
copy of the monthly monitoring reports for the outfalls that have been classified as Tier 2 or Tier 3 and are
subject to monthly sampling, are attached. The period for sampling ended on October 31, 2020.
Enclosed is the DMR for outfalls SW001, SW007, SW009, SW010, SW013-10, SW013-13, SW016, SW018
and SW020.There were no samples collected from these outfalls and are listed as "No Qualifying Flow" for
the sampling period. This was due to lack of qualifying rainfall events, nighttime events or inclement
weather. Please direct any correspondence or questions concerning the Allen Steam Station NPDES Storm
Water Program to Elizabeth Glenn at [phone].
Yo truly,
Rick R. Roper, General Manager III
Allen Steam Station
Duke Energy Carolinas, LLC
Attachments
bc: w/attachment: Elizabeth Glenn
UPS Tracking: 1 Z X67 601 24 9451 0473

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number NCS000546
FACILITY NAME Allen Steam Station
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PERSON COLLECTING SAMPLE(S) NA
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CERTIFIED LABORATORY(S) Duke Energy Carolinas, LC Lab # 248
Pace Analytical Services Lab #329
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Part A: Specific Monitoring Requirements
SAMPLES COLLECTED DURING CALENDAR YEAR: 2020
(This monitoring report shall be received by the Division no later than 30 days from
the date the facility receives the sampling results from the laboratory.)
CD
III
COUNTY Gaston
(7
PHONE NO.( 704 ) 8604945
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0
N
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SIGNATURE OF PERMITTEE OR DESIGNEE
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REOUIRED ON PAGE 3.
Outfall
Date
50050
00400
01077
01002
01022
01012
01027
No.
Sample
Collected
Total
Flow (if app.)
Total
Rainfall
pH
Silver, Total (as
A)
Arsenic, Total
(as As)
Boron, Total
(as B)
Beryllium,
Total (as Be)
Cadmium,
Total (as Cd)
mo/dd/yr
MG
inches
m
m
mg1L
m
m
SW001
N/A
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW007
N/A
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW009
N/A
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO10
N/A
I N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW013-10
N/A
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW013-13
N/A
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW016
N/A
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW018
N/A
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW020
N/A
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
Outfall
Date
01034
01042
01067
01051
01097
01147
01059
01092
No.
Sample
Collected
Chromium,
total (as Cr)
Copper,
Total
(as Cu)
Nickel, Total
(as Ni)
Lead, Total (as
Ph)
Antimony,
Total (as Sb)
Selenium, Total
(as Se)
Thallium,
(Total as TI)
Zinc, Total (as
Zn)
mo/dd/yr
mg/L
mg/L
m
mgtL
mgtL
mg1L
m
m
SWO01
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW007
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW009
1 N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO10
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO13-10
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO13-13
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO16
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW018
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW020
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
Permit Number NCS000546 Form SWU-247, last revised 611212015
Page 1 of 3

Outfall
No.
Date
Sample
Collected
71900
C0530
00556
Mercury, Total,
Method 1631E
Solids, Total
Suspended —
Concentration
Oil & Grease
mo/dd/yr
mg/L
I mg/L
m
SWO01
N/A
NO QUALIFYING FLOW FOR THE MONTH
OF OCTOBER 2020
SWO07
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO09
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO10
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO13-10
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO13-13
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO16
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SWO18
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
SW020
N/A
NO QUALIFYING FLOW FOR THE MONTH OF OCTOBER 2020
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? Oyes eno
(if yes, complete Part B)
Part B: Vehicle Maintenance Activitv Monitorine Reauirements
Outfall
No.
Date
Sample
Collected
50050
00556
00530
00400
Total Flow
(if applicable)
Total
Rainfall
Oil & Grease
(if appl.)
Non -polar
O&G/TPH
(Method 1664
SGT-HEM), if
appl.
Total
Suspended
Solids
pH
New Motor
Oil Usage
mo/dd/yr
MG
inches
mg/l
mg/l
unit
gal/mo
Permit Number NCS000546 Form SWU-247, last revised 611212015
Page 2of3

STORM EVENT CHARACTERISTICS:
Date NA
Totai Event Precipitation (inches): NA
Event Duration (hours): (only if applicable —see permit.)
(if more than one storm event was sampled)
Date
Total Event Precipitation (inches):
Event Duration (hours): (only if applicable — see permit.)
Mail Original and one copy to:
Division of Energy Mineral and Land Resources
Attn: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
"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 fines and imprisonment for knowing violations."
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(Date)
Permit Number NCS000546 Form SWU-247, last revised 611212015
Page 3 of 3