NCS000546 DMR SW (11)

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) Jared Hamels
CERTIFIED LABORATORY(S) Duke Energy of the Carolinas, LLC Lab #248
Shealy Environmental Services, NC Lab #329
Part A: Specific Monitoring Requirements
COUNTY Gaston
PHONE NO. [phone]
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PAGE 2.
Outfall Date
50050
01027
00400
00530
01022
01092
01097
01002
No. Sample
Collected
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 /L
m /L
m /L
SWO01 1/15/2016
N/A
11.15
7.82
52
<0.05
0.247
<0.001
<0.001
Outfall Date
01012
01027
01034
01042
01051
01067
01147
01077
No. Sample
Collected
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
SW001 1/15/2016
<0.001
<0.001
0.00261
0.00406
0.0033
<0.001
<0.001
<0.0003
Outfall Date
No. Sample
Collected
01059
71900
Thallium,
Total (as TI)
Mercury,
Total, Method
1631E
mo/dd/ r
m /L
n /L
SW001 1/15/2016
<0.0002
23.3 — Fla B
Outfall Date
50050
00400
00530
01022
01092
01097
01002
No. Sample
Collected
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 /L
m /L
m /L
SWO02 1/15/2016
N/A
11.15
8.00
161
<0.05
0.034
<0.001
<0.001
NCS000546 Form SWM -247, last revised 2/212012
Page 1 of 7

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
SW002 1/15/2016
<0.001
I <0.001
10.00147
0.00506
<0.001
10.00175
<0.001
<0.0003
Outfall Date
No. Sample
Collected
01059
71900
Thallium,
Total (as Tl)
Mercury,
Total, Method
1631E
mo/dd/ r
m /L
n /L
SW002 1/15/2016
<0.0002
5.06 Flag B
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 /L
m /L
m /L
SW003 1/15/2016
1 N/A
1.15
17.99
141
1 <0.05
10.01
1 <0.001
10.00202 71
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
m/L
m/L
m/L
mg/1L
SW003 1/15/2016
<0.001
<0.001
<0.001
10.00208
1 <0.001
<0.001
<0.001
<0.0003
Outfall
No.
Date
Sample
Collected
01059
71900
Thallium,
Total (as Tl)
Mercury,
Total, Method
1631E
.01092
mo/dd/ r
mg/L.
n /L
SW003
1/15/2016
1 <0.0002
5.09 Flag B
Outfall Date
No. Sample
Collected
50050
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 /L
m /L
m /L
SW008 1/15/2016
N/A
11.15
17.82
117
<0.05
10.032
<0.001
<0.001
NCS000546 Form SWU-247, last revised 21212012
Page 2of 7

Outfall Date
01012
01027
01034
01042
01051
01067
01147
01077
No. Sample
Collected
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 Sc)
Silver, Total
(as Ag)
mo/.dd/r
m/L
m/L
m/L
m/L
m/L
m/L
m/L
I m/L
SWO08 1/15/2016
<0.001
<0.001
10.0011
10.00286
10.00115
10.00137
<0.001
1 <0.0003
Outfall Date
01059
71900
No. Sample
Thallium,
Mercury,
Collected
Total (as TI)
Total, Method
-
Total
Flow (if app.)
1631E
mo/dd/ r
m /L
ng/L,
SW008 1/15/2016
<0.0002
3.04 Flag B
mo/dd/ r
MG
and C
Outfall Date
50050
01027
00400
00530
01022,
01092
01097
01002
No. Sample
Collected
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 /L
m /L
m /L
SWO09 1/15/2016
N/A
11.15
17.91
17
<0.05
0.035
1 <0.001
10.00211
Outfall Date
No. Sample,
Collected
01012
01027
01034
0104201051
Mercury,
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
m /L
m /L
m /L
m /L
m
m /L
SWO09 1/15/2016
<0.001
<0.001
0.00112
0.00288
0.00101
10.00103
0.00253
<0.0003
Outfall Date
01059
71900
No. Sample
Thallium,
Mercury,
Collected
Total (as Tl)
Total, Method
No. Sample
Collected
Total
Flow (if app.)
1631E
mo/dd/ r
m /L
n /L
SWO09 1/15/2016
<0.0002
2.63 Flag B
mo/dd/ r
MG
and C
Outfall Date
50050
00400
00530
01022'
01092
01097
01002
No. Sample
Collected
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 /L
m /L
m /L
SWO12 1/15/2216
N/A
11.15
17.69 17
<0.05
0.131
<0.001
<0.001
NCS000546 Form SWU-247, last revised 2/212012
Page 3of 7

Outfall Date,
01012
01027
01034
01042
01051
01067
01147
01077
No. Sample
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/L
m/L
m/L
m/L
mg/111
m/Lm/L
1631E
SWO12 1/15/2016
<0.001
<0.001
<0.001
0.00472
<0.001
<0.001
<0.001
<0.0003
Outfall Date
01059
71900
34671
39488
39492
39496
39500
39504
39508
pH
No. Sample
Thallium,
Mercury,
PCB-
PCB-
PCB-
PCB-
PCB-
PCB-
PCB-
Oil & Grease
Collected
Total (as Tl)
Total, Method
1016
1221
1232
1242
1248
1254
1260
(Method 1664 SGT -
inches
SU
1631E
m /L
m /L
m /L
m /L
N/A
11.15
18.16
HEM)
mo/dd/yr
mg/L
ng/1L
µg/L
µg/L
µg/L
gg/L
lag/L
µg/L
µg/L
mg/L
SWO12 1/15/2016
<0.0002
1.20 Flag B<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
4.1
and C
Outfall Date
No. Sample
Collected
SWO16 11/15/2016
50050
01012
00400
00530
01022,
01092
01097
01002
Total
Total
pH
Solids, Total
Boron, Total
Zinc, Total (as
Antimony,
Arsenic, Total
Flow (if app.)
Rainfall
Collected
Suspended-
(as B)
Zn)
Total (as Sb)
as (As)
(as Ni)
Total (as Se)
(as Ag)
Concentration
/Lm
mg/LF-
/L
m /L
m /L
MG
inches
SU
m /L
m /L
m /L
m /L
m /L
N/A
11.15
18.16
360
<0.05
10.091
<0.001
10.00782
Outfall Date
01012
01027
01034
01042
01051
01067
01147
01077
No. Sample
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
/Lm
mg/LF-
/L
m /L
m /L
m /L
m /L
m /L
m /L
SWO16 1/15/2016
<0.001
<0.001
10.0154
0.0214
0.00863
0.0112
0.00188
<0.0003
Outfall Date
No. Sample
Collected
01059
71900
Thallium,
Total (as Tl)
Mercury,
Total, Method
1631E
mo/dd/ r
m /L
n /L
SWO16 1/15/2016
0.000226
17.7 Flag B
Outfall Date
50050
00400
00530
01022
01092
01097
01002
No. Sample
Collected
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 /L
m /L
m /L
SWO18 1/15/2016
N/A
1.15
7.87
830
<0.05
0.074
<0.001
0.00165
NCS000546 Form SWU-247, last revised 2/212012
Page 4of 7

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
mg/L
mg/L
mg/L
m/L
me /L
mg/L
mg/L
mg/L
SW018 2/2/2016
<0.001
<0.001
10.0271
0.0338
0.0094
0.0156
<0.001
<0.0003
Outfall Date
No. Sample
Collected
01059
71900
34671
39488
39492
39496
39500
39504
39508
Total
Flow (if app.) .
Thallium,
Total (as Tl)
Mercury,
Total, Method
1631E
PCB-
1016
PCB-
1221
PCB-
1232
PCB-
1242
PCB-
1248
PCB-
1254
PCB-
1260
Oil & Grease
(Method 1664 SGT -
HEM
mo/dd/yr
mg/L
ng/L
µg2
pg/11-
µg2
Vg/L-
µg2
µg2
µg/L
mg/L
SW018 1/15/2016
1 <0.0002
128.23 Flag B
1 <0.4
<0.4
<0.4
<0.4
1 <0.4
<0.4
<0.4
6.3 — Flag A
Outfall Date
50050
01012
00400
00530
01022
01092
01097
01002
No. Sample
Collected
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
mg/L
mg/L
mg/L
mg/L
mg/L
SW020 1/15/2016
1 N/A
11.15
8.09
1230
<0.05
AM
<0.001
<0.001
Outfall
No.
Date
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
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
m
SW020
1/15/2016
1 <0.001
I <0.001
10.00648
10.0234
10.00254
10.00668
<0.001
<0.0003
Outfall Date
No. Sample
Collected
01059
71900
Thallium,
Total (as TI)
Mercury,
Total, Method
1631E
mo/dd/ r
mg/L
n /L
SW020 1/15/2016
1 <0.0002
12.5 Flag B
NCS000546 Form SWU-247, last revised 21212012
Page 5of 7

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 Activity Monitoring Requirements
Outfall Date
No. 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/ r
MG
inches
m /l
m /l
unit
al/mo
Exceedances include Zinc at SW001, Mercury at SW001, Zinc at SW012, Mercury at SW016, Copper at SW016, TSS at SW016, TSS at SW018, Mercury at SW018,
Copper at SW018, Mercury at SW020, Copper at SW020, and TSS at SW020.
A - SW018 failed the MS recovery for SGT -HEM 1664B (oil and grease) at 37% (64-132% is acceptable). The LCS passed at 82%. It is believed this is due to the matrix
of the sample, but the results are reportable.
B - The mercury field blank for samples collected January 15, 2016 had a detected value (0.884 ng/L) Therefore, per the permit (footnote #2 of Table 5) this value was
subtracted from all mercury results collected during this event.
C - Method 1631 states that if mercury is found in the field blank at a concentration equal to or greater than 0.5 ng/L, or greater than one-fifth the level in the associated
sample, whichever is greater, results for associated samples may be the result of contamination and may not be reported or otherwise used for regulatory compliance
purposes. Therefore any results less than 4.4 ng/L should be considered suspect and if reported for compliance should be flagged. The results for Outfalls 008, 009 and
012 were below 4.4 ng/l and are flagged.
NCS000546 Form SWU-247, last revised 2/2/2012
Page 6of 7

STORM EVENT CHARACTERISTICS:
Date 1/15/2016
Total Event Precipitation (inches): 1.15
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
NCS000546
(Date)
Form SWU-247, last revised 2/2/2012
Page 7of 7