NCS000546_MONITORING INFO_20191010

MA)
STORMWATER DIVISION CODING SHEET
NCS PERMITS
PERMIT NO.
N�5000-s 90
DOC TYPE
❑FINAL PERMIT
�, MONITORING REPORTS
❑ APPLICATION
❑ COMPLIANCE
❑ OTHER
DOC DATE
❑ du l
YYYYMMDD

;fpA KE
N RGY.
Allen Steam Station
253 Plant Allen Rd.
Belmont, NC 28012
704 829-2587
October 7, 2019
RECEIVED
NC Department of Environmental Quality OCT I 0 201y
Attention: Central Files
Division 11617 MailfService Center Water ces WR SEC7lCENTL p S
N
Raleigh, NC 27699-1617
Subject: Duke Energy Carolinas, LLC
NPDES Storm Water Discharge Monitoring Report for. -
Allen Steam Station — NCS000546 — Gaston County
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 September 30, 2019.
Enclosed is the DMR for outfalls SW001, SW007, SW009, SW010, 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. Please direct any correspondence or questions
concerning the Allen Steam Station NPDES Storm Water Program to Robert Wylie at [phone].
Yours truly,
Terry W. Tuck, General Manager II
Allen Steam Station
Duke Energy Carolinas, LLC
Attachments
bc: w/attachment Robert Wylie
UPS Tracking: 1Z X67 601 24 9642 7631

sTORINIWATER DISCHARGE OUTFALL (SDO)
NIONITORINC REPORT
Permit Number NCS000546 SAit'IPLES COLLECTED DURING CALENDAR YEAR: 2019
(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.)
FACILITY NAME Allen Steam Station
PERSON COLLECTING SAMPLE(S) N/A
CERTIFIED LABORATORY(S) Duke EnergN LLC NC Lab #248
Shealy Environmental_ Services, Inc. NC Lab #329
Part A: Specific Monitoring; Requirements
COUNTY Gaston
PHONE NO. [phone]
SIGNA'I'URE OF PERMITTEE OR DESIGNEE
REOUIRED ON PAGE 3.
Outfall
No.
Date
Sample
Collected
50050
00400
01077
01002
01022
01012
01027
Total
Flow (if app.)
Total
Rainfall
pH
Silver, Total (as
Ag)
Arsenic,
Total (as As)
Boron, Total
(as B)
Beryllium,
Total (as Be)
Cadmium,
Total (as Cd)
mo/dd/ yr
MG
inches
m L
m L
m L
m L
m L
S1' 001
NIA
N/A
NO QUALIFYING
FLOW FOR THE MONTH
OF SEPTEMBER
2019
SW007
N/A
N/A
NO QUALIFYING
FLOW FOR THE ti'IONTH OF SEPTEMBER 2019
SW009
NIA
NIA
NO QUALIFYING
FLOW FOR THE MONTH OF SEPTEMBER 2019
SW010
N/A
N/A
NO QUALIFYING
FLOW FOR THE iNIONTH OF SEPTEMBER 2019
SW016
N/A
N/A
NO
UALIFYING FLOW FOR THE MONTH OF SEPTEMBER 2019
SWOIN
NIA
NIA
NO QUALIFYING
FLOW FOR THE MONTH OF SEPTEMBER 2019
SW020
N/A
N/A
NO QUALIFYING
FLOW FOR THE NIONTH OF SEPTEfbIBER 2019
Outfall
No.
Date
Sample
Collected
01034
01042
01067
01051
01097
01147
01059
01092
Chromium,
Total (as Cr).
Copper, Total
(as Cu)
Nickel, Total
(as Ni)
Lead, Total
(as Ph)
Antimony,
Total (as Sh)
Selenium,
Total (as Se)
Thallium,
Total (As Tl)
Zinc, Total (as
Zn)
ma/dd/vr
m L
m L
m
m L
m L
m L
m L
m L
SlV001
N/A
NO QUALIFYING FLOW FOR THE XIONTH OF SEPTEMBER
2019
S11'007
NIA
NO QUALIFYING FLOW FOR THE MONTH OF SEPTEMBER 2019
SW009
N/A
NO QUALIFYING FLOW FOR THE i11ONTH OF SEPTEINI13ER 2019
SWO10
NIA
NO QUALIFYING FLOW FOR THE ,\IONTH OF SEPTEMBER 2019
SWO16
N/A
NO QUALIFYING FLOW FOR THE MONTH OF SEPTEMBER 2019
SWOIN
N/A
NO QUALIFYING FLOW FOR THE i1,IONTH OF SEPTEMBER 2019
S%N'020
N/A
NO QUALIFYING FLOW FOR THE tMONTH OF SEPTEINIBER 2019
Permii Number NCS000546 Form SWU-247. last revised 21212012
Pzgge I of 3

Outfall
No.
Date
Sample
Collected
71900
C0530
00556
Mercury, Total,
Method 1631E
Solids, Total
Suspended -
Concentration
Oil & Grease
mo/dd/ yr
n
m L
m L
SW001
N/A
NO QUALIFYING FLOW FOR THE MONTH OF SEPTEMBER 2019
SW007
N/A
NO QUALIFYING FLOW FOR THE N'IONTH OF SEPTEMBER 2019
SW009
NIA
NO QUALIFYING FLOW FOR THE MONTH OF SEPTEMBER 2019
SNOW
N/A
NO QUALIFYING FLOW FOR THE MONTH OF SEPTEMBER 2019
SWO16
N/A
NO QUALIFYING FLOW FOR THE N7ONTH OF SEPTEMBER 2019
S«1018
NIA
NO QUALIFYING FLOWFOR THE MONTH OF SEPTEMBER 2019
SW020
N/A
NO QUALIFYING FLOW FOR THE MONTH OF SEPTENIBER 2019
Does this faci[ily perform Vehicle Maintenance AL'I1Vltle\ using more than 55 gal]ons ofnew motor oil per month? , yes X no
(ifyes, complete Part B)
Part B: Vehicle iMaintenance Activity Monitoring; Requirements
Outfall
Date
50050
00556
00530
00400
Total Flow
Total
Oil & Grease
Non -polar
Total
pH
New Motor
No.
Sample
Collected
(if applicable)
Rainfall
(if appl.)
O&G/TPH
Suspended
Oil Usage
(iMethod 1664
Solids
SGT-HEM), if
appl.
me/dd/ r
MG
inches
M;!A
MgA
unit
at/mo
STORM EVENT CHARACTERISTICS:
Date NA
Total Event Precipitation (inches): NA
Event Duration (hours): (only if applicable — sec permit.)
(if more than one storm event was sampled)
Date _
Total Event Precipitation (inches).
Event Duration (hours): (only ii' applicable — sec permit.)
Mail Original and one copy to:
Division of Water Quality
Attn: Central Files
1617 Mail Service Center
RaleiA, North Carolina 27699-1617
Permit Numhcr NCS000546 Form SWU-247. lust revised 2/212012
Pace 2 ol' 3

"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."
(Signature of
Lo 1-7 e-
(Date)
Permit Number NCS000546 Form SWU-247. lust revised 2/2/2012
Rage 3 of 3

(' DUKE
ENERGY
October 7, 2019
NC Department of Environmental Quality
Attention: Central Files
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Duke Energy Carolinas, LLC
NPDES Storm water Discharge Monitoring Report for:
Allen Steam Station — NCS000546 — Gaston County
Allen Steam Station
Duke Energy
253 Plant Allen Rd.
Belmont, NC 28012
RECEIVED
OCT 10 2919
CENTRAL FILES
DWR SECTION
In accordance with Part III, E(2) of the above referenced NPDES Storm water permit, the
original and one copy of the quarterly monitoring reports for Year 5 -- Period 1 are attached. The
period for sampling ended on September 30, 2019.
Outfalls SW001A, SWO02, SW003, SW005, SW008, SW013-7, SW013-8, SW013-9, SW013-
10, SWO13-11, SW013-12, SW13-13, SW013-14, SWO13-15 and SWO15. are listed as "No
Qualifying Flow" during the period. Samples were not collected from these outfalls due to night
time rainfall events, inclement weather or lack of qualifying rainfall events during the period.
Please direct any correspondence or questions concerning the Allen Steam Station NPDES
Stormwater Program to Robert Wylie at [phone].
Yours truly,
Terry Tuck, General Manager II
Allen Steam Station
Fossil Hydro- Carolinas West
Attachments
bc: w/attachment Robert Wylie
UPS Tracking: 1Z X67 601 24 9642 7631

STORNIWATER DISCHARGE OUTFALL (SDO)
NIONITORING REPORT
Permit Number NCS (100546 SAN'IPLES COLLECTED DURING CALENDAR YEAR: 2019
(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.)
FACILITY NAN7E Allen Steam Station COUNTY Gaston
PERSON COLLECTING SAMPLE(S) StaflNcndor PHONE NO. (704 8�2350
CERTIFIED LABORATORY(S) Duke Energy of the Carolinas, LLC Lab #248
Shealy Environmental Services NC Lab #329
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PACE 3.
Part A. Specific Monitoring Requirements
Outfall
Date
500SO
'Total
No.
Sample
Collected
Flow (if a .)
mo/dd/ r
MG
SWOOIA
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THII YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEN7BER 30, 2019.
SWO02
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALI, DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEN7BER 30, 21119.
SW003
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEN7BER 30, 2019.
SW005
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY I, 2019 THROUGH
SEPTEN7BER 30, 2019.
SWO08
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEMBER 30, 2019.
SWO13-7
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEMBER 30, 2019.
SIV013-8
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEMBER 30, 2019.
SW013-9
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEP'ITEMBER 30, 2019.
SW013-10
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEN7BER 30, 2019.
SW013-11
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEMBER 30, 2019.
SWO13-12
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEN7BER 30, 2019.
SWO13-13
NA
NA
NO QUALIFYING, FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD I, JULY 1, 2019 THROUGH
SEP,rENIBER 30, 2019.
Form SWU-247. last rerised 212/2012
Page I of 3

SWI113-14
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEAIBER 30, 2019.
SWO13-15
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTENIBER 30, 2019.
SWO15
NA
NA
NO QUALIFYING FLOW AT THIS OUTFALL DURING THE YEAR 5 PERIOD 1, JULY 1, 2019 THROUGH
SEPTEMBER 30, 2019.
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per mon[ _ yes x no
(if yes. complete Part B)
Part B: Vehicle Maintenance Activity Monitoring Requirements
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-HENI), if
appl.
Total
Suspended
Solids
pH
New Motor
Oil Usage
mo/dd/ r
MG
inches
m
m
unit
at/mo
STORM EVENT CHARACTERISTICS:
Date NIA
Total Event Precipitation (inches): NIA
Event Duration (hours): NIA (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 Water Quality
Attn: Central Files
1617 Mail Service Center
Raleigh. North Carolina 27699-1617
Form SWU-247. last revised 2/2l2012
Page 2 of 3

"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."
(Signature
rV/Zf�,y
(Date)
Form SWU-247, last revised 21212012
Page 3 ol' 3

DUKE
ENERGY.
September 9, 2019
NC Department of Environmental Quality
Attention: Central Files
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Allen Steant Station
253 Plant Allen Rd.
Belmont, NC 28012
704 829-2587
REULIVED
CENTRAL PILES
DWR SECTI0,�1
Subject: Duke Energy Carolinas, LLC
NPDES Storm Water Discharge Monitoring Report for:
Allen Steam Station — NCS000546 — Gaston County
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 August 31, 2019.
Enclosed is the DMR for outfalls SW001, SW007, SW009, SW010, 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 either nighttime rainfall events, inclement weather or lack of qualifying rainfall
events.
Please direct any correspondence or questions concerning the Allen Steam Station NPDES Storm Water
Program to Robert Wylie at [phone].
Yours truly,
10� w_ jt4�
Terry W. Tuck, General Manager II
Allen Steam Station
Duke Energy Carolinas, LLC
Attachments
bc: wlattachment Robert Wylie
UPS Tracking: 1Z X67 601 24 9751 4811

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number NCS000546 SAN'IPLES COLLECTED DURING CALENDAR YEAR: 2019
('Phis 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.)
FACILITY NAME Allen Steam Station
PERSON COLLECTING SAMPLE(S) NIA
CERTIFIED LABORATORY(S) Duke Energy Carolinas LLC NC Lab #248
Shealy Environmental Services Inc. NC Lab #329
Part A. Specific iMonitorin g Re uirements
COUNTY Gaston
PHONE NO. [phone]
SIGNATURE OF PERMIT'TEE OR DESIGNEE
REQUIRED 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
Ag)
Arsenic,
Total (as As)
Boron, Total
(as B)
Beryllium,
Total (as Be)
Cadmium,
Total (as Cd)
mo/dd/ yr
INIG
inches
m L
m L
m L
m L
m L
SW001
NIA
NIA
NO QUALIFYING FLOW FOR THE MONTH
OF AUGUST 2019
SWO07
NIA
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SW009
NIA
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SWWO
NIA
NIA
NO QUALIFYING FLOW FOR THE T-MONTH OF AUGUST 2019
SNVO16
NIA
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SAV018
NIA
NIA
NO QUALIFYING FLOW FORTH EMONTH OF AUGUST 2019
SW020
NIA
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
Outfall
No.
Date
Sample
Collected
01034
01042
01067
01051
01097
01147
01059
01092
Chromium,
Total (as Cr)
Copper, Total
(as Cu)
Nickel, Total
(as Ni)
Lead, Total
(as Pb)
Antimony,
Total (as Sb)
Selenium,
Total (as Se)
Thallium,
Total (As Tl)
Zinc, Total (as
Zn)
mo/dd/ r
mg1L
m
m
m L
m L
m L
m L
m L
SW001
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SNVO07
NIA
NO QUALIFYING FLOW FOR THE NIONTH OF AUGUST 2019
SW009
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
S1V010
N/A
NO QUALIFYING FLOW FOR THE N'IONTH OF AUGUST 2019
SWO16
N/A
NO QUALIFYING FLOW FOR THE NIONTH OF AUGUST 20t9
SWO18
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SNV020
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
Permit Numher NCS000546 Form SWU-247. Iasi revised 2/2/2012
Page 1 of 3

Outfall
No.
Date
Sample
Collected
71900
C0530
00556
Mercury, Total,
Method 1631E
Solids, Total
Suspended -
Concentration
Oil & Grease
mo/dd/ r
n L
m L
m L
S%V00I
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SNVO07
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SW009
NIA
NO QUALIFYING FLOW FOR THE ,MONTH OF AUGUST 2019
SWO10
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SWO16
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
S1V018
NIA
NO QUALIFYING FLOW FOR THE MONTH OF AUGUST 2019
SW020
NIA
NO QUALIFYING FLOW FOR THE ,NIONTH OF AUGUST 2019
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor ail per wonth? yes X no
(if yes, complete Part B)
Part B: Vehicle Maintenance Activity Monitoring Requirements
Outfall
Date
50050
00556
00530
00400
Total Flow
Total
Oil & Grease
Non -polar
Total
pH
New Motor
No.
Sample
Collected
(if applicable)
Rainfall
(if appl.)
O&G/TPH
Suspended
Oil Usage
(Method 1664
Solids
SGT-HEM), if
appl.
mo/dd/vr
MG
inches
m
m
unit
gaurno
STORM EVENT CHARACTERISTICS:
Date NA
Total —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 — sce permit.)
Mail Original and one copy to:
Division of Water Quality
Attn: Central Files
1617 Mail Service Center
Raleigh. North Carolina 27699-1617
Permit Number NCS000546 Farm SWU-247, last revised 2212012
Page 2 of 3

"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 inquire 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."
L /a A
(Signature f Permittee) (Date)
Permit Numher NCS000546 Form SWU-247. last revised 21212012
Page 3 of 3