NCS000546 DMR SW (8)

July18,
2016
NC Department of Environmental Quality
Attention: Central Files
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Duke Energy Carolinas, LLC
NPDES Storm water Discharge Monitoring Report for:
Allen Steam Station - NCS'0;0'S4- Gaston County
Allen Steam Station
Duke Energy
253 Plant Allen Rd.
Belmont, NC 28012
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 Year 1 - Period 4 are attached. The
period for sampling ended on June 30, 2016.
The outfalls listed on the DMR are "No Flow" for the sampling period. Samples were not
collected from these outfalls due to night time rainfall events or inclement weather events
involving lightning.
Please direct any correspondence or questions concerning the Allen Steam Station NPDES
Storm water Program to Ross Hartfield at [phone].
Yours truly,
8,-g L"
Brent Dueitt, General Manager II
Allen Steam Station
Fossil Hydro- Carolinas West
Attachments
bc: w/attachment
Ross Hartfield
Tina Woodward
Don Scruggs
UPS Tracking 1Z X67 601 42 9232 0880

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number NCS O'0005�462P SAMPLES COLLECTED DURING CALENDAR YEAR: 2016
(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) StaffNendor
CERTIFIED LABORATORY(S) Duke Energy of the Carolinas, LLC Lab #248
Shealy Environmental Services, NC L 3 .
B
Lt/v
Part A: Specific Monitoring Requirements
JUL 21 2016
cE fv
COUNTY Gaston
PHONE NO. [phone]
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PAGE 2.
Outfall
Date
50050
"ICE
No.
Sample
Total
JUIV
Collected
Flow if a
mo/dd/ r
MG
SW001
NA
N/A
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME.
SW001A
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW002
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW003
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME.
SW005
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW007
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW008
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW009
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO10
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW013-1
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW013-2
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW013-3
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SW013-4
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
Form SWU-247, last revised 2/2/2012
Page 1 of 4

SWO13-5
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
00556
00530
June 30, 2016 TIMEFRAME
SWO13-6
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
Non -polar
O&G/TPH
(Method1664
SGT -HEM), if
appl.
Total
Suspended
-Solids
pH
June 30, 2016 TIMEFRAME
SWO13-7
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
mg/1
m /l
June 30, 2016 TIMEFRAME
SWO13-8
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO13-9
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO13-10
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO13-11
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO13-12
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO13-13
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO13-14
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO13-15
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
SWO15
NA
NA
NO FLOW AT THIS OUTFALL DURING THE YEAR 1 PERIOD 4, April 1, 2016 THROUGH
June 30, 2016 TIMEFRAME
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? _ yes x_no
(if yes, complete Part B)
Part B: Vehicle Maintenance Activitv Monitoring Renuirements
Outfall
No.
Date
Sample
Collected
50050
00556
00530
00400
Total Flow
(if applicable)
Total
Rainfall
Oil & Grease
(if appl.)
Non -polar
O&G/TPH
(Method1664
SGT -HEM), if
appl.
Total
Suspended
-Solids
pH
New Motor
Oil Usage
mo/dd/ r
MG
inches
mg/1
m /l
unit
al/mo
Form SWU-247, last revised 2/2/2012
Page 2 of 4

STORM EVENT CHARACTERISTICS:
Date N/A
Total Event Precipitation (inches): N/A
Event Duration (hours): N/A (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
"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 Permittee)
T -A Y 17 !ro
(Date)
Form SWU-247, last revised 2/2/2012
Page 3 of 4

W W 'e
July 18, 2016
NC Department of Environmental Quality
Attention: Central Files
Division of Water Quality
1617 Mall Service Center
'Raleigh, NC 27699-1617
4RECQV
JUL 2 1 2016
CENTRAL FILET
DWR SECTIO'
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
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 are attached. The samples collected are
required monthly due to Tier Two Status. The period for sampling ended June 30, 2016.
Samples were collected from outfalls on June 15, 2016. Samples for the following outfalls were
collected: SWO16, SW018 and SW020. The laboratory results were received on June 28,
2016 Analytes sampled above the benchmark values for analytical monitoring are as
follows. Duke Energy has performed the steps required by the Tier One and Tier Two status
for these outfalls.
Outfall
Parameter
Result
Benchmark
SWO16
Copper
0.016 mg/L
0.010 mg/L
SWO16
TSS
230 mg/L
100 mg/L
SW020
Zinc
0.139 mg/L
0.126 mg/L
All values reported on the attached reports are dependent on the accuracy of approved
analytical methods used to measure parameters.
Please direct any correspondence or questions concerning the Allen Steam Station NPDES
Storm Water Program to Ross Hartfield at [phone].
Yours truly,
Brent Dueitt, General Manager II
Allen Steam Station
Fossil Hydro- Carolinas West

Attachments
bc: w/attachment Ross Hartfield
Tina Woodward
Don Scruggs
UPS Tracking- 1Z X67 601 42 9232 0880

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number NCS 000546 SAMPLES COLLECTED DURING CALENDAR YEAR: 2016
(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)
CERTIFIED LABORATORY(S) Duke Energv of the Carolinas, LLC Lab #248
Shealy Environmental Services, NC Lab #329
Part A: Specific Monitoring Requirements
Outfall Date
No. Sample
Collected
SWO16 16/15/2016
Outfall Date
No. Sample
Collected
SWO16 16/15/2016
COUNTY Gaston
PHONE NO. [phone]
SIGNATURE OF PERMITTEE OR DESIGNEE
RE UIREDON PAGE 2.
50050
01027
00400
00530
01022
01092
01097
01002
Total
Total
pH
Solids, Total
Boron, Total
Zinc, Total (as
Antimony,
Arsenic, Total
Flow (if app.)
Rainfall
Total (as Cr)
Suspended-
(as B)
Zn)
Total (as Sb)
as (As)
m /L
m /L
m /L
Concentration
m /L
m /L
m /L
m /L
MG
inches
SU
m /L
m /L
m /L
m /L
m /L
N/A 10.43
17.87
1230
0.103
10.084
<0.001
10.0075
01012
01027
01034
01042
01051
'01067
01147
01077
Beryllium,
Cadmium,
Chromium,
Copper, Total
Lead, Total
-Nickel, Total
Selenium,
Silver, Total
Total (as Be)
Total (as Cd)
Total (as Cr)
(as Cu)
(as Pb)
(as Ni)
Total (as Se)
(as Ag)
m /L
m /L
m /L
m /L
m /L
m /L
m /L
m /L
<0.001
I <0.001
10.0083
10.0163 10.00423
10.00727
0.00348
<0.0003
Outfall Date
No. Sample
Collected
01059
71900
Thallium,
Total'(as TI) '
Mercury,
Total, Method
1631E
mo/dd/ r
m /L
n /L
[-SWO16 6/15/2016
0.00028
20.3
tv
JULiu
2 a M6
Outfall Date
No. Sample
Collected-
50050
'00400
01022
01092
01097
01002
Total
Flow,(if app.)
Total
Rainfall
pH
°S611
Suspended -
Concentration
Toron, Total
'(as B)
Zinc, Total (as
Zn),
Antimony,
Total (as Sb)
Arsenic, Total
as (As)
mo/dd/ r
MG
inches
SU
m /L
m /L
m /L
m /L
m /L
SW018 6/15/2016
N/A
10.43
7.35
163
<0.05
10.011
1 <0.001
<0.001
NCS000546 Form S WU-247, last revised 21212012
Page 1 of 3

Outfall Date
No. Sample
Collected
01012
01027
01034
01042
01051
01067
01147
01077
Beryllium,
Total (as Be)
Cadmium,
Total (as Cd)
Chromium,
Total (as Cr)
Copper, Total
(as Cu)
Lead, Total
(as Pb)
Nickel, Total
(as Ni)
Selenium,
Total (as Se)
Silver, Total
(as Ag)
mo/dd/ r
m /L
m /L
m /L
m /L
m /L
m /L
m /L
m /L
SW018 6/15/2016
1 <0.001
<0.001
10.00137
10.00925
<0.001
<0.001
<0.001
<0.0003
Outfall Date
No. Sample
Collected
01059
71900
Thallium,
Total (as TI)
Mercury,
Jotal, Method
1631E
mo/dd/ r
m /L
n /L
SW018 6/15/2016
<0.0002
12.93
Outfall Date'
No. Sample
Collected
50050
01027
00400
00530
01022
01092
01097
01002
Total
Flow (if app.)
Total
' Rainfall
pH -
Solids, Total-
Suspended-
Concentration' -
Boron, Total
(as B)
Zinc, Total (as
Zn)
Antimony,
Total (as Sb)
Arsenic, Total
as (As)
mo/dd/ r
MG
inches
SU
m /L
m /L
m
m /L
m /L
SW020 6/15/2016
N/A
0.43
8.30
17
<0.05
0.139
<0.001
<0.001
Outfall Date
No. Sample
01012
01027
01034-
01042
01051
01067
01147
01077
Beryllium,
Cadmium,
Chromium,
Copper, Total
Lead, Total
Nickel, Total
Selenium,
Silver, Total
Collected
Total (as Be)
Total (as Cd)
Total (as Cr)
(as Cu)
(as Pb)
(as Ni)
Total (as Se)
(as Ag)
mo/dd/r
m /L
m
m /L
m /L
m /L
m /L
m /L
m /L
SW020 6/15/2016
<0.001
<0.001
<0.001
10.00847
<0.001
0.00244
<0.001
<0.0003
Outfall
No.
Date
Sample
Collected
01059
71900
Thallium,
Total (as TI)
Mercury,
Total, Method
1631E
mo/dd/ r
m /L
n /L
SW020
6/15/2016
1 <0.0002 17.68
NCS000546 Form SWM -247, last revised 21212012
Page 2of 3

Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? _ yes X no
(if yes, complete Part B)
Part B: Vehicle Maintenance Activitv Monitoring Renuiremenk
Outfall Date
No. Sample
Collected
50050
00556
00530
00400
Total Flow
(if applicable)
Total
Rainfall,
Oil & Grease
(if appl.)
Non -polar
O&G/TPH
Total .
Suspended
pH
New Motor
Oil Usage
(Method .1664
Solids
SGT -HEM), if.
appl._
mo/dd/ r
MG
inches
m/1
m /l
unit
al/mo
Notes: Exceedances include Copper at SW016, Zinc at SW020'and TSS at SW016, and Mercury at SW016. SW016 failed Hg MS/MSD recovery at 4X dilution at 38/28%
recovery. The sample was then reanalyzed and spiked at lOX dilution with recoveries of 55/80% (acceptable 71-125%). The sample is flagged with an S denoting failing recovery
for MS. PCB and Oil and Grease samples were inadvertently not collected for SW018.
STORM EVENT CHARACTERISTICS:
Date 6/15/2016
Total Event Precipitation (inches): 0.43
Event Duration (hours): NA (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
"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 Peri
NCS000546
(Date)
Form SWU-247, last revised 2/2/2012
Page 3 of 3