NCS000548_Original Permit Renewal Application_20200127

�f' DUKE
X; ENERGY.
October 24, 2019
Suzanne McCoy
NCDEMLR Stormwater Program
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Subject: Duke Energy Carolinas, LLC.
Marshall Steam Station
NPDES Stormwater Permit NCS000548
Permit Renewal Application
Dear Ms. McCoy:
Duke Energy
Mai -shrill Steam Station
8329 East NC Hwy 150
Terrell, NC 28682
828-478-7700
Duke Energy Carolinas, LLC requests the subject permit be renewed and reissued. The subject
permit expires on April 30, 2020. Section III Part B of this permit requires the permit application
for permit renewal to be submitted at least 180 days prior to the expiration date of the permit.
Attached is the renewal application form and duplicate copies of the supplemental information.
The fish tissue monitoring results are also included as required by the letter dated October 2,
2017 from Ms. Annette Lucas of NC Division of Energy, Mineral and Land Resources to Mr.
Shannon Langley of Duke Energy.
Should you have questions or need additional information please contact Robert Wylie at 704
382-4669.
Sin ely,
(a 0�4/
Rick Roper
General Manager III
Marshall Steam Station
Attachments:
Renewal Application Form
Supplemental Information
Site Map from the Stormwater Pollution Prevention Plan
Summary of Analytical Monitoring Results
Summary of Visual Monitoring Results
Narrative of Significant Site Changes
Certification of the Development and Implementation of the SPPP
Fish Tissue Monitoring Results (Part II Section B Page 12 of 17)
www.duke-ener,ey.com

Permit Coverage
TA Renewal Application Form
NCDENR National Pollutant Discharge Elimination System NP C Permit Number
N
Stormwater Individual Permit S000548
Please provide your permit number in box in the upper right hand corner, complete the information in the space provided
below and return the completed renewal form along with the required supplemental information to the address indicated.
Owner Information
* Address to which permit correspondence will be mailed
Owner / Organization Name:
Duke Energy Carolinas, LLC
Owner Contact:
_
Paul Draavitch
Mailing Address:
526 S Church Street Mail Code ECUP
Charlot—NC 28202 _
Phone Number:
980 373-0408
Fax Number:
E-mail address:
[e-mail]
Facility Information
Facility Name:
Marshall Steam Station
Facility Physical Address:
8329 East NC Hwy 150
Terrell, NC 28682
Facility Contact:
Scott La Sala
Mailing Address:
lid= y
Phone Number:
828 478-7820
Fax Number:
E-mail address:
[e-mail]
Permit Information
Permit Contact:
Robert Wylie
Mailing Address:
PO Box 1006, Mail Code EC13K
Charlotte NC 28202
Phone Number:
704 382-4669
Fax Number:
704 382-1681
E-mail address:
[e-mail]
Discharge Information
Receiving Stream:
Catawba River
Stream Class:
WS-IV, B, CA
Basin:
Catawba River Basin
Sub -Basin:
Number of Outfalls:
10
Facility/Activity Changes Please describe below any changes to your facility or activities since issuance of your permit. Attached a
separate sheet if necessary.
1. Addition of outfall SW025
2. Closing of outfalls SWO01, SWO01A, SWO06, SWO09 and SWO023. Note SW024 was permitted but never built.
of drainage area of SWO12
4. Addition of new on -site facilities - Lined Retention Basin and Holding Basin
CERTIFICATION
I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief
such information(TVe, cpmplA and accurate.
Signature
Rick Roper
Print or type name of person signing above
October 24, 2019
Date
General Manager III
Title
Please return this completed application form SW Individual Permit Coverage RenewalStormwater Permitting Program
and requested supplemental information to: 1612 Mail Service Center
Raleigh, North Carolina 27699-1612

Marshall Steam Station
Storm Water Permit NCS000548
Individual Permit Application
Supplemental Information

SUPPLEMENTAL INFORMATION REQUIRED FOR RENEWAL OF INDIVIDUAL
NPDES STORMWATER PERMIT
Two copies of each of the following shall accompany this submittal in order for the application
to be considered complete:
(Do not submit the site Stormwater Pollution Prevention Plan)
Initials
RRW 1. A current Site Map from the Stormwater Pollution Prevention Plan. The location of
industrial activities (including storage of materials, disposal areas, process areas and
loading and unloading areas), drainage structures, drainage areas for each outfall,
building locations and impervious surfaces should be clearly noted.
RRW
2. A summary of Analytical Monitoring results during the term of the existing permit
(if your permit required analytical sampling). Do not submit individual lab reports.
The summary can consist of a table including such items as outfall number,
parameters sampled, lab results, date sampled, and storm event data.
RRW
3. A summary of the Visual Monitoring results. Do not submit individual monitoring
reports. The summary can consist of a table including such items as outfall number,
parameters surveyed, observations, and date monitoring conducted.
RRW 4. A summary of the Best Management Practices utilized at the permitted facility.
Summary should consist of a short narrative description of each BMP's in place at
the facility. If the implementation of any BMP's is planned, please include
information on these BMP's.
RRW 5. A short narrative describing any significant changes in industrial activities at the
permitted facility. Significant changes could include the addition or deletion of
work processes, changes in material handling practices, changes in material storage
practices, and/or changes in the raw materials used by the facility.
RRW 6. Certification of the development and implementation of a Stormwater Pollution
Prevention Plan for the permitted facility (Sign and return attached form).
If the final year analytical monitoring of the existing permit term has not been completed
prior to filing the renewal submittal, then the last years monitoring results should be submitted
within 30 days of receipt of the laboratory reports. (i.e. do not withhold renewal submittal
waiting on lab results)

Attachment 1
Site Map

LEGEND
Outfa Its
Drainage Area (DA) Boundary
Property Boundary
Drainage Area with Associated
Stormwater Outfalls
STRUCTURE LEGEND
OElevated Water Tank
OFuel Oil Unloading Area
Fuel Oil Tanks
® Urea Tanks
OCommunity Budding
© Precipitator Units 3 & 4
70 Powerhouse Units 1-4
© Gypsum & Limestone Conveyor Belts
O SCR Area
1p Stormwater Collection Pond
11 Electrical Budding
12 Ball MITI
13 Reagent Feed Tanks
14 Scrubber Site
16 Service Building and Warehouse
16 Sump#1 and #1A
17 Sump #2
16 Intake
19 Urea Tank Farm
fir. �•ra7�,t � �J.3'as_'"Pt��L �s�'P�5•�i'56
�`��I�' 7 r��'..; 1-t' � � .
Ak
w
r
13i9 LANCF7l L y _
3H WHAT 1!
+Rt
¢N11 ! p ,
c� L ERGED a♦y
NG:HLETttrr�i°
SO MENT IT
SEDIMENT, WESTERN COARD 4,
d •� `� 84SIN 1A'--------ONE
• �` �' rAAL PiiE A� ..
ETENT DN � - -- �" � �. �►r " TFALL 00
A` F. PDES 0 FALL 5
►y r RADIAL
SE MEN, EA
cVIM
Q0 Retired Constructed Wetland r� ',
MP 1 1C K \ t
Treatment System � LJME19'
• :� ARD ARD� '�'' 11 12
0 Limestone Area Stormwater Basin MP 10
9
KEYMAP
© New Wastewater Treatment System
A 3 P FALL ,
0 Feet 500�
-
11 2 .OiDTFALL OtA � 'I
1 ,
fl, .. '\, -a✓$ ♦ - '°`� Lake Norman
- 1 ,.♦ F'Q, yy OADt1 Catawba
rarreu
NOTES: 1. SWO01 AND SWO01A HAVE BEEN DELETED FROM THE STORMWATER PERMIT AND ARE NOW MONITORED WITHIN THE WASTEWATER PERMIT MARSHALL STEAM STATION
DUKE 2• SW005, SWO13 THROUGH SW021 HAVE BEEN ABANDONED
�3. NEWLY CONSTRUCTED WASTEWATER TREATMENT (FORMER DRAINAGE AREA SW023) IS NOW ROUTED TO PERMITTED WASTEWATER LINED RETENTION BASIN SITE PLAN STORMWATER OUTFALLS
� ENERGY
4" SW006, SW009, AND SW023 HAVE BEEN CANCELLED FROM THE STORMWATER PERMIT
5. SW024 WAS PROPOSED IN THE STORMWATER PERMIT BUT WILL NOT BE INSTALLED DUKE ENERGY CAROLINAS, LLC
PATH •ELTSWIN[ $,OATA*OISVROJECTSU4"-DU EENEROYU RF ALLSTUMST TMM AP S%UTEPUN STORY ATEFOUTFALLS_tOFMEVMD USER OYARCHICA DATE 1»3rn,s �� l SHEET OF 2

KEYMA P
s
r J'M Lako Norman
Tppnti at Catawba
0,
� A
olDUKE
' ENERGY.
P11rN NCLT5NWN1015011TA*15VROJECT5W7?_DU NEROVU RWAI 5TE M5TAT*N�PO UtEPL11N StOR AtEROUTFALL5-2 F] EVBUM USER GWRCN+511 DATE 16]i 9
r SF
r
LEGEND
Property Boundary
Pipeline
Drainage Area (DA) Boundary
Drainage Area with
® Associated Stormwater
Outfalls
11
0 Feet 500
Permit
Storrnmter
Coordinates I
Oiiva:Description and
Dral Irrpervious
Monitoring
Drainage Area Runoff Description
Outfafls
Receiving water Body
Area area
Table
35' 35' 53" N
24-arch-CMP to the Catawba
33 0% 1
SW002
Drainage area rune f from miscellaneous
80' 57' 50" W
River (Lake Norman)
materials storageaiee along the intake canal.
SW 003
35' 38' 11" N
Rip rap dtch to the Catawba
f
35 0% 1
!
IDrainagearea runoff fron miscellaneous
80' S7' 6T' W
35' 36' 01" N
RrAN (Lake Norman)
36-inch-dameter HOPE to the
meteiials storage area along the intake canal
Drainage area runoff from a portion dash basin
SWO04
80' 57' 48" W
Catawba River (Lake Norman)
0.8 0% 2
embankment west dash silos 8 haul road.
j
Drainage area runoefron theswitchyard,
SW007
35' 35' 56' N
80- inch-dameleCMP to the
38.2 5% 4
Powerhouseyard rail fines, andareas extending
8(' 57' 51" W
Catawba River (Lake Naman)
west to the gypsum haul road, all into the intake
Icanal.
SWO08
35' 35' 53" N
8-inch-damelerCMP tothe
I
0 1 70% 5
Drainage area runciffran pa%ed area east dthe
80' 57' 50" W
Catawba River (Lake Naman)
Powerhouse into the intake canal
35-35.43" N
i
24-inch-damelerHDPE to the
Drainage area rand( from the plant entrance,
l
SW011
80' 57- 5T W
I Catawba River (Lake Nam an)
54 5% 7
between the fuelunloading drives and pubic
lioadwa
SW012
35' 39 50" N
118-inch•dameler HDPE to the
2 10% 8
Drainage area from scrubbervicinity underneath
80' 57' 4T' W
Caawba River (Lake Naman)
ductwak upgradent of intake canal.
35' 35 5T' N
Ditch to the Catawba Rver
Drainage area runoff from gravel loydown and
SWO12A
1 0% 8
wooded yard areas north and west of the FGD
80' 57' 44" W
(Lake Naman)
facility draining west to the intake canal
L 18-inch.diametercorrugated
IDrainagearearunoffromgrdmllaydownand
SWO22
35'35'44" N
HOPE to the Catawba River
08 0% 9
(wooded yard areas and FGD access road area
W 57, 5r W
.nL ake Naman)
into the discharge canal.
Olfsite drainage flowing ons ile fron the
35' 35' 44" N
Mile drainage area with
southwest and industrialstammeter from the
SWO25
I temporary southwest ponds
222.8 0% WA! New OrAfall
structural fill is collected within an onsile pond
80- 57' 5T W
(East 8 West)
and pumped north and east to the drainage area
outfall.
MARSHALL STEAM STATION
SITE PLAN STORMWATER OUTFALLS
DUKE ENERGY CAROLINAS, LLC
� I
SHEET 2 OF 2 V

Attachment 2
Summary of Analytical Monitoring Data

October 2019
t DUKE
' ENERGY
SUMMARY OF LABORATORY ANALYSES
INDUSTRIAL STORMWATER
MAY 2015 - JUNE 2019
NPDES Stormwater Permit NCS000548
Marshall Steam Station
y�
�a •i � �a
v�
UNITS
pH
mg/L
ug/L
ug/L
ug/L
mg/L
I ug/L
ug/L
ug/L
ug/L
ng/L
ug/L
ug/L
ug/L
ug/L
mg/L
mg/L
mg/L
PERMIT BENCHMARK
6-9
15
90
340
65
*
3
900
10
75
**
335
56
0.3
*
0.116
ANY
100
STORMWATER
OUTFALL
DATE UF
COLLECTION
IWAL-
RAINFALL
_
11/30/2015
0.82
7.5
< 1
1.42
< 1
< 0.05
< 1
3.07
7.88
2.89
7
2.16
1.32
< 0.3
< 0.2
0.02
47
6/27/2016
0.98
7.5
--
--
--
--
--
--
--
--
--
--
--
--
11
12/29/2016
0.15
7.1
--
--
--
--
--
--
--
--
--
--
--
--
--
5
6/22/2017
0.07
7.5
--
--
--
--
--
-
--
--
--
--
-
--
-
--
--
--
< 5
SWO02
12/5/2017
0.34
7.6
--
--
--
--
--
--
--
--
--
--
--
--
--
52
6/25/2018
0.17
7.2
--
--
--
-
--
--
--
--
--
--
29
11/12/2018
2.16
7.7
--
--
--
--
--
6.6
6/7/2019
0.58
7.4
-
--
--
--
--
-
--
--
--
--
--
59
11/30/2015
0.82
7.6
< 1
2.38
< 1
< 0.05
< 1
< 1
2.61
< 1
4.18
< 1
1.19
< 0.3
< 0.2
< 0.005
8
6/27/2016
0.98
7.5
--
--
--
--
-
--
-
--
-
--
--
--
--
-
79
12/29/2016
0.15
7.4
-
-
30
SWO03
6/22/2017
12/5/2017
0.07
0.34
7.9
7.6
I
I
I
I - I
TI -
I -- I
--
-
I --
I
I 40
330
6/25/2018
0.17
7.3
66
11/12/2018
2.16
7.4
I
I
I
I I
--
I I
I
[ --
- I
I I
- I
58
6/7/2019
1 0.58
7.3 I
-
I -
[ -- I
I
I -
I --
I -
-
I I
-
I -
[
I 22
1 of 5 www.duke-energy.com

October 2019
DUKE
ENERGY
SUMMARY OF LABORATORY ANALYSES
INDUSTRIAL STORMWATER
MAY 2015 - JUNE 2019
NPDES Stormwater Permit NCS000548
Marshall Steam Station
UNITS
P14
mg/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ng/L
ug/L
ug/L
ug/L
ug/L
mg/L
mg/L
mg/L
STORMWATER
OUTFALL
PERMIT BEND (MARK
--MWT= TOTAL
COLLECTION RAINFALL
11/30/2015 0.82
6-9
7.7
25
--
90
<1
340
6.57
65
<1
*
0.079
3
<1
900
<1
10
3.28
7.5
<1
**
13.4
335
1 <1
56
2.96
1 0.3
< 0.3
1 *
< 0.2
10.126
j< 0.005
1 ANY
< 0.401
100
22
SWO04
11/12/2018
2.16
8.0
--
1.34
31.5
1.22
0.121
< 1
12.5
16.8
1 9.14
126
1 9.45
11.6
< 0.2
0.636
1 0.068
< 0.40
100
12/14/2015
0.10
9.4
<4.0
<1
1.45
<1
<0.05
<1
3.36
5.84
1.96
8.39
3.22
1.24
< 0.3
< 0.2
0.173
< 0.40
54
6/27/2016
0.98
7.2
< 4.0
< 1
< 1
< 1
< 0.05
< 1
1.34
4.04
1.38
6.2
2.08
< 1
< 0.3
< 0.2
0.069
< 0.40
39
12/29/2016
0.15
7.0
< 4.0
< 1
1.91
< 1
< 0.05
< 1
3.35
9.63
3.19
6.88
4.86
1.53
< 0.3
< 0.2
0.075
< 0.40
46
6/22/2017
0.07
7.2
< 4.0
< 1
< 1
< 1
< 0.05
< 1
3.04
4.69
< 1
5.22
3.22
1.45
< 0.3
< 0.2
0.107
< 0.40
12
SWO07
12/5/2017
0.34
7.4
< 5.6
< 1
2.58
< 1
< 0.05
< 1
5.82
9.92
4.03
2.06
6.11
2.87
< 0.3
< 0.2
0.138
< 0.401
72
6/25/2018
0.17
7.8
< 5.3
< 1
3.99
< 1
< 0.5
< 1
5.3
15.3
4.58
32.7
7.43
2.92
< 0.3
0.223
0.160
--
64
11/12/2018
2.16
7.4
< 5.0
< 1
1.92
< 1
< 0.05
< 1
4.66
7.22
3.83
12.9
3.79
< 1
< 0.2
< 0.2
0.107
< 0.40
39
1/29/2019
0.21
7.3
< 5.1
< 1
3.8
< 1
< 0.05
< 1
5.68
10.9
4.72
19.2
4.8
1.28
< 0.2
< 0.2
0.101
< 0.40
28
6/7/2019
0.58
7.0
< 5.0
<1
2.95
<1
0.069
<1
2.04
10.4
1.87
15.6
2.15 1
1.44 1
< 0.2
< 0.2
0.098
--
16
2 of 5 www.duke-energy.com

October2019
DUKE
"Pr ENERGY
SUMMARY OF LABORATORY ANALYSES
INDUSTRIAL STORMWATER
MAY 2015 - JUNE 2019
NPDES Stormwater Permit NCS000548
Marshall Steam Station
UNITS
PH
mg/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ng/L
ug/L
ug/L
ug/L
ug/L
mg/L
mg/L
mg/L
STORMWATER
OUTFALL
PERMIT BENCHMARK
DATEOF
COLLECTION RAINFALL
12/14/2015 0.10
6-9
9.4
15
--
90
--
340
--
65
--
*
--
3
--
900
--
10
--
75
--
**
--
335
--
56
--
0.3
--
*
--
0.126
--
ANY
--
100
380
6/27/2016
0.98
7.2
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
160
9/1/2016
0.08
7.0
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
21
9/26/2016
0.76
7.2
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
17
12/29/2016
0.15
7.6
--
--
--
--
--
--
--
--
--
--
--
--
--
-
--
--
86
SWO08
6/22/2017
0.07
6.8
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
220
12/5/2017
0.34
8.2
--
--
--
--
--
--
--
--
--
62
6/25/2018
0.17
6.2
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
58
11/12/2018
2.16
8.2
--
--
--
--
--
--
--
--
--
--
--
110
1/29/2019
0.21
8.0
--
--
--
--
--
--
--
--
--
--
-
--
--
--
50
6/7/2019 1
0.58
8.2
-
-
24
3 of 5 www.duke-energy.com

October 2019
'4P DUKE
ENERGY
SUMMARY OF LABORATORY ANALYSES
INDUSTRIAL STORMWATER
MAY 2015 - JUNE 2019
NPDES Stormwater Permit NCS000548
Marshall Steam Station
h�
y1� ati
UNITS
PH
mg/L
ug/L
ug/L
ug/L
mg/L
ug/t
ug/L
ug/L
ug/L
ng/t
ug/L
ug%L
ug/L
ug/L
mg/L
mg/L
mg/L
PERMIT BENCHMARK
6-9
25
90
340
65
"
3
900
10
75
**
335
56
0.3
*
0.126
ANY
100
STORM WA TER
OUTFALL
COLLECTION
RAINFALL
12/17/2015
1A2
6.9
< 1
< 1
< 1
-
--
0.042
-
10
SW011
6/22/2017
0.07
7.2
< 1
2.D8
-
1.61
0.106
32
11/12/2018
2.16
7.0
-
< 1
< 1
--
< 1
-
-
0.088
16
12/14/2015
0.10
8.3
--
--
--
330
6/27/2016
0.98
6.3
-
200
9/1/2016
0.08
6.6
29
9/26/2016
0.76
7.0
16
12/29/2016
0.15
6.7
46
5WO12
6/22/2017
0.07
7.4
47
12/5/2017
0.34
7.1
31
6/25/2018
0.17
7-1
76
11/12/2018
2.16
T2
-
72
6/7/2019
0.58
TO
61
4 of 5 www.duke-energy.com

October 2019
DUKE
* ENERGY
SUMMARY OF LABORATORY ANALYSES
INDUSTRIAL STORMINATER
MAY 2015 - JUNE 2019
NPDES Stormwater Permit NCS000548
Marshall Steam Station
ya,
a�a
UNITS
pH
mg/L
ug/L
ug/L
ug/L
mg/L
ug/L
ug/L
ug/L
ug/L
ng/L
ug/L
ug/L
ug/L
ug/L
mg/L
mg/L
mg/L
PERMIT BENCHMARK
6-9
IS
90
340
65
*
3
900
10
75
**
335
56
0.3
*
0.126
ANY
100
STORMWATER
OUTFALL
DATE OF
COLLECTION
TOTAL
RAINFALL
11/30/2015
0.82
7.5
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
7
6/27/2016
0.98
8.1
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
19
5WO12A
12/5/2017
0.34
7.2
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
61
11/12/2018
2.16
7.2
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
270
12/14/2015
0.10
9.5
--
--
--
--
--
--
--
--
--
--
--
--
--
160
6/27/2016
0.98
7.8
--
--
--
--
--
--
--
--
-
63
12/29/2016
0.15
6.9
--
--
-
--
--
--
--
--
--
< 5
5WO22
6/22/2017
0.07
7.6
--
--
--
-
--
--
--
--
--
--
--
69
12/5/2017
0.34
7.5
--
--
--
--
--
--
--
--
--
--
--
--
29
6/25/2018
0,17
7.3
--
--
--
--
--
--
--
--
--
--
--
--
--
610
6/7/2019
0.58
7.5
—
--
--
--
--
--
--
--
--
--
--
--
--
9.8
notes:
*No Benchmark - Monitor Only
** No Benchmark - Values above NCDEQ standard of 12 ug/L should be noted but do not trigger Tier response
-- Sample not analyzed for parameter
Outfalls 5W001,1A, SW006,SW009 and SW023 have either been abandoned or are covered by the NPDES wastewater permit. Therefore their results are not included.
5 of 5 www.duke-energy.com

Attachment 3
Summary of Visual Monitoring Results

Site Contact: Scott LaSala
Phone Number: 828-478-7820
4 f• DUKE
ENERGY
SUMMARY OF VISUAL QUALITATIVE MONITORING DATA
MAY 2015 - JUNE 2019
NPDES Stormwater Permit NCS000548
Marshall Steam Station
STORMWATER OUTFALL
SWO02
SWO03
SWO04
SWO07
SWO08
SW011
SWO12
SWO12A
SWO22
Color
clear to
light brown
clear to
dark gray
clear to
gray
clear to
light gray
clear to
dark gray
clear to
light gray
clear to
light brown
clear to
light brown
clear to
light brown
Odor
None
I None
I None
I None
I None
I None
I None
I None I
None
(Clarity (Average)
1.5
I 1.7
1.7
2.2
I 3.0
1.3
2.3
! 1.4
2.2 I
Floating Solids (Average)
1.1
1.1
1.0
1.3
I 1.9
1.0
1.4
1.4
1.5
Suspended Solids (Average)
1.2
1.6
1.0
1.8
2.2
1.0
1.8
1.2
1.9
(Visible Foam
None
I None
1 None
I None
I None
None
1 None
I None
I None
Visible Oil Sheen
I None
None
I None
I None
I None
None
I None
None
I None
Indication of Erosion/Deposition
None
None
None
None
None
None
I None
None
None
(Rain Event Accumulation (Average)
0.7
0.7
I 1.4
0.5
0.5
1.1
1 0.5
1.1
0.4
Outfall Status
Active
Active
I Active
Active
Active
Active
I Active
Active
Active I
Notes:
Value assessment of 1- 5 for Clarity, Floating Solids, and Suspended Solids. Values increasing upward by severity (1= Best Case and 5 = Worst Case)
Outfalls SW001, SW001A, SW006, SW009, and SW023 have been closed and are not included in this submittal.
SW024 was permitted but was never built.

Attachment 4
Summary of Best Management Practices

SDO Narrative Description and BMP Summary
Outfall ID:
SWO02
Discharge Structure:
24" CMP
Location:
Intake canal, south of
current boat ramp and
ash basin discharge
structure
Latitude - Longitude:
35036'23", 80057'35"
Drainage Area:
3.3 acres
Percent Impervious:
0%
Permit Monitoring
Table 1
Table:
DUKE
!� ENERGY
Location: Marshall Steam Station
Permit No. NCS000548
Industrial Activities Outfall SWO02 includes mid -section of the vegetated slope of the ash basin
and Description: dike, gravel road and gravel storage yard area northeast of the Powerhouse.
This area includes the embankment slope between Outfall SWO01 and
Outfall SWO03 drainage areas. The embankment of the ash basin dike is
sloped at a ratio of two horizontal to one vertical (2H:1 V) and covers
approximately 80 percent of the drainage area.
The discharge from Outfall SWO02 flows down a rip rapped embankment
approximately 10 yards before reaching the intake canal.
The gravel laydown area is used for various quantities of construction
material such as structural steel, cable, truck trailers, various construction
equipment and personnel vehicle parking and other inert materials at various
times.
Significant Inert Materials: Various quantities of construction equipment,
Materials/Potential stockpiles of gravel or dirt, structural steel, cable,
Pollutants: truck trailers, and other inert materials may be
stored on the gravel storage area at various times.
BMP Summary: Fugitive Dust Emissions
Establish procedures to minimize offsite tracking of dust.
Material Storage Areas
• Control leakage or spillage from vehicles or containers and ensure
that proper protective measurement.
• Cover material with a temporary covering made of polyethylene,
polyurethane, polypropylene, or hypalon.
• Provide diversion berms, dikes or grassed swales around the
perimeter of the area to limit run-on.
• Construct an enclosure or build a berm around the area.
• Regularly sweep area to minimize debris on the ground.
• Train employees in spill prevention, control, cleanup and proper
materials management techniques.

SDO Narrative Description and BMP Summary
4� DUKE
ENERGY.
Location: Marshall Steam Station
Permit No. NCS000548
Outfall ID:
SW003
Discharge Structure:
Riprap-lined ditch
Location:
Intake canal, midway
along miscellaneous
material storage
area, east of ash
basin embankment
.,"',� �i: ,.`3�� •;-
Latitude - Longitude:
35036'11", 80057'67"
Drainage Area:
3.5 acres
_ � ,��fi _ � .
Percent Impervious:
4T ._
`- 'i_'�f _..
Permit Monitoring
Table 1
Table:
Industrial Activities
and Description: I
Outfall SW003 includes southern most section of the gravel road and gravel
storage yard area northeast of the Powerhouse. The outfall drainage path is a
ditch that extends from the eastern edge of the gravel road to the intake canal.
The gravel laydown area is used for various quantities of construction material
such as structural steel, cable, truck trailers, various construction equipment
and personnel vehicle parking and other inert materials at various times.
Significant
Materials/Potential
Inert Materials: Various quantities of construction equipment,
Pollutants:
stockpiles of gravel or dirt, structural steel, cable,
truck trailers, and other inert materials may be
stored on the gravel storage area at various times.
BMP Summary:
Fugitive Dust Emissions
• Establish procedures to minimize offsite tracking of dust.
Material Storage Areas
• Control leakage or spillage from vehicles or containers and ensure
that proper protective measurement.
• Cover material with a temporary covering made of polyethylene,
polyurethane, polypropylene, or hypalon.
• Provide diversion berms, dikes or grassed swales around the
perimeter of the area to limit run-on.
• Construct an enclosure or build a berm around the area.
• Regularly sweep area to minimize debris on the ground.
• Train employees in spill prevention, control, cleanup and proper
materials management techniques.

SDO Narrative Description and BMP Summary
DUKE
ENERGY.
Location: Marshall Steam Station
Permit No. NCS000548
Outfall ID:
SW 004
Discharge Structure:
36" HDPE,
corrugated
=r, ; < • . _ .
Location:
Intake canal, south
of old boat ram
Latitude - Longitude:
35°36'01 "
80°57'48"
r �•
q.
A
Drainage Area:
0.8 acres
Percent Impervious:
0%
Permit Monitoring
Table 2
Table:
Industrial Activities
and Description:
The drainage area for SW004 comprises of the grass area on the ash basin
dike embankment slope southwest of the Ash Silos. The area is bordered on
the north by the top of the slope, east by the curbed ash haul road, west by
the above ground ash piping and bordered south by the paved plant road.
The drainage is collected in a riprap-lined catchment and piped under the
paved plant road to the outfall.
No activities typically occur in this area as it is bordered on all sides by
obstructions (roads, curbs, piping, etc.)
Significant
Materials/Potential
There are no significant materials or potential pollutants in this area.
Pollutants:
BMP Summary:
Provide diversion berms, dikes or grassed swales around the
perimeter of the area to limit run-on.

SDO Narrative Description and BMP Summary
Outfall ID: SWO07
Discharge Structure: 60" CMP
Location: Intake canal, main
powerhouse yard
drainage, across from
warehouse
Latitude - Longitude:
Drainage Area:
Percent Impervious:
Permit Monitoring
Table:
Industrial Activities
and Description:
Significant
Materials/Potential
Pollutants:
35035'56", 80057'51"
38.2 acres
5%
Table 4
(� DUKE
ENERGY.
Location: Marshall Steam Station
Permit No. NCS000548
The drainage area for SWO07 comprises areas immediately north and
extending west of the Powerhouse. The drainage area includes the roofs of
the office annex, service building and the remaining portion of the
warehouse. The drainage area also includes 5 acres of paved Powerhouse
yard areas and parking lots, 4 miles of rail line, and a 3 acre graveled
switchyard. Roofed areas comprise approximately 35,000 square feet.
Vegetated embankments and outlying vegetated areas west of the
Powerhouse comprise most of the SWO07 drainage area.
Located within the SWO07 drainage area is approximately 50 drums of lube
oil, and small containers of hydrazine, glycerin and 2-propanol, stored inside
the warehouse. Approximately 1,400 linear feet of the covered FGD
limestone and gypsum conveyors cross through the SWO07 drainage area.
Drainage Area SWO07 includes small transformers containing mineral oil
located in the 3 acre graveled switchyard.
On rare occasions, the stormwater discharge from SWO07 is comingled with
the NPDES permitted overflow from Sump #1 (NPDES Outfall 002A).
Outfall SWO07 discharges directly into the intake canal.
Oil: Transformers containing a total of 340 gallons of
mineral oil are located in the switchyard.
Approximately 50 drums of lube oil are stored
inside the Warehouse. Drum deliveries are made
at the Warehouse. These drums are not routinely
exposed to stormwater.
Gypsum and Limestone: Approximately 1,400 feet of the covered FGD
limestone and gypsum conveyors cross through
the SWO07 drainage area.
Chemicals: Small containers of hydrazine, glycerin and 2-
propanol are stored inside the Warehouse. These
containers are not routinely exposed to
stormwater.

SDO Narrative Description and BMP Summary
CSKE
N RGY
Location: Marshall Steam Station
Permit No. NCS000548
BMP Summary: Fugitive Dust Emissions
• Establish procedures to minimize offsite tracking of dust.
• Wash vehicles before they leave the site in a designated area where
wash water can be controlled.
Delivery Vehicles:
• Develop procedure for the inspection of all vehicles arriving on the
plant site and ensure overall integrity of the body or container.
• Control leakage or spillage from vehicles or containers and ensure
that proper protective measurement.
Chemical Loading/Unloading Areas
• Cover chemical loading/unloading areas and store chemicals
indoors, when possible.
• Provide diversion berms, dikes or grassed swales around the
perimeter of the area to limit run-on.
• Use containment curbs at chemical loading/unloading areas.
• Develop and implement spill prevention, containment, and
countermeasure (SPCC) plans.
• Train employees in spill prevention, control and cleanup.
• Personnel familiar with spill prevention and response procedures
should be present during unloading to ensure that any leaks or spills
are immediately contained and cleaned up.
Miscellaneous Loading/Unloading
• Confine loading/unloading activities to designated areas outside
drainage pathways and away from surface waters.
• Inspect containers for leaks or damage prior to loading/unloading.
• Avoid loading/unloading materials in the rain or provide cover or
other protection for loading docks.
• Provide diversion berms, dikes or grassed swales around the
perimeter of the area to limit run-on.
• Cover loading and unloading areas and perform these activities on
an impervious pad to enable easy collection of spilled materials.
• Slope the impervious concrete floor or pad to collect spills and leaks
and convey them to proper containment and treatment.
• Regularly sweep area to minimize debris on the ground.
Oil Bearing Equipment/Switchyards
• Construct level grades and gravel surfaces to retard flows and limit
the spread of spills.
• Collect stormwater runoff in perimeter ditches.
Vehicle and Equipment Maintenance
Good Housekeeping
• Eliminate floor drains that are connected to the storm or sanitary
sewer; if necessary, install a sump that is pumped regularly.
Collected wastes should be properly treated or disposed of by a
licensed waste hauler.
• Do all cleaning at a centralized station so the solvents stay in one
area.

4 DUKE
ENERGY.
SDO Narrative Description and BMP Summary
Location; Marshall Steam Station
Permit No. NCS000548
• Use drip pans, drain boards, and drying racks to direct drips back
into a fluid holding tank for reuse.
• Drain all parts of fluids prior to disposal. Oil filters can be crushed
and recycled.
• Promptly transfer used fluids to the proper container; do not leave
full drip pans or other open containers around the shop. Empty and
clean drip pans and containers.
• Clean up leaks, drips, and other spills without using large amounts
of water. Use absorbents for dry cleanup whenever possible.
• Do not pour liquid waste into floor drains, sinks, outdoor storm drain
inlets, or other storm drains or sewer connections.
• Maintain an organized inventory of materials.
• Eliminate or reduce the number and amount of hazardous materials
and waste by substituting nonhazardous or less hazardous
materials.
• Label and track the recycling of waste material (e.g., used oil, spent
solvents, batteries).
• Store batteries and other significant materials inside.
• Dispose of greasy rags, oil filters, air filters, batteries, spent coolant,
and degreasers in compliance with RCRA regulations.
Minimizing Exposure
• Perform all cleaning operations indoors or under covering when
possible. Conduct the cleaning operations in an area with a concrete
floor with no floor drainage other than to sanitary sewers or
treatment facilities.
• If operations are uncovered, perform them on a concrete pad that is
impervious and contained.
• Check vehicles closely for leaks and use pans to collect fluid when
leaks occur.
Management of Runoff
• Use berms, curbs, or grassed swales other diversion measures to
ensure that stormwater runoff from other parts of the facility does not
flow over the maintenance area.
Inspections and Traininq
• Inspect the maintenance area regularly to ensure BMPs are
implemented.
• Train employees on waste control and disposal procedures.

DUKE
ENERGY.
SDO Narrative Description and BMP Summary
Location: Marshall Steam Station
Permit No. NCS000548
Outfall ID:
SWO08
,z
Discharge Structure:
8" CMP
Location:
Intake canal, north
side of intake structure
-
Latitude - Longitude:
35035'53", 80057'50"
Drainage Area:
0.1 acres
Percent Impervious:
70%
Permit Monitoring
Table 5
Table:
Industrial Activities
The SWO08 drainage area is comprised primarily of paved roadway and
and Description:
yard area on the east side of the Powerhouse. Approximately 70 percent of
this area is paved with a small vegetated area located immediately adjacent
to the intake canal. SWO08 discharges into a vegetated strip and then flows
into the intake canal.
Significant
None
Materials/Potential
Pollutants:
BMP Summary:
• Regularly sweep area to minimize debris on the ground.

SDO Narrative Description and BMP Summary
Outfall ID:
I SW011
Discharge Structure:
24" CMP
Location:
South bank of
discharge canal, south
of discharge structure
Latitude - Longitude:
35035'43", 80057'52"
Drainage Area:
5.4 acres
Percent Impervious:
5%
Permit Monitoring
Table 7
Table:
(- DUKE
ENERGY.
Location: Marshall Steam Station
Permit No. NCS000548
Industrial Activities The drainage area includes the plant entrance from Hwy 150, the area
and Description: surrounding the plant raw water storage tank on the west side of the plant
entrance road, the majority of the entrance and exit drives of the fuel
unloading area and a vegetated area southwest of and connecting to the
discharge canal. Approximately 150 feet of the covered FGD limestone and
gypsum conveyors crosses through the drainage area.
Significant Gypsum and Limestone: Approximately 150 linear feet of the covered FGD
Materials/Potential
Pollutants: limestone and gypsum conveyors cross through
the SW011 drainage area.
BMP Summary: I Fugitive Dust Emissions
0 Establish procedures to minimize offsite tracking of dust.

to)DLJKE
ENERGY.
SDO Narrative Description and BMP Summary
Location: Marshall Steam Station
Permit No. NCS000548
Outfall ID:
SWO12
_
Discharge Structure:
18" HDPE
Location:
Southern end of intake
canal
Latitude - Longitude:
35035'50", 80057'47"
Drainage Area:
2.0 acres
Percent Impervious:
10%
Permit Monitoring
Table 8
Table:
Industrial Activities
and Description:
The SWO12 drainage area is comprised of graveled yard,articulated
concrete block areas, and vegetated slopes located north and west of the
FGD facility (east of the Powerhouse) near the scrubber vicinity. The FGD
facility ductwork crosses over the southern end of the drainage area.
Significant
Materials/Potential
Inert Materials: Various quantities of construction materials
Pollutants:
including valves, piping and other inert materials
may be stored on the gravel storage area north of
the FGD at various times.
BMP Summary:
Fugitive Dust Emissions
• Establish procedures to minimize offsite tracking of dust.
Material Storage Areas
• Control leakage or spillage from vehicles or containers and ensure
that proper protective measurement.
• Cover material with a temporary covering made of polyethylene,
polyurethane, polypropylene, or hypalon.
• Provide diversion berms, dikes or grassed swales around the
perimeter of the area to limit run-on.
• Construct an enclosure or build a berm around the area.
• Regularly sweep area to minimize debris on the ground.
• Train employees in spill prevention, control, cleanup and proper
materials management techniques.

CS EENIERGY
SDO Narrative Description and BMP Summary
Outfall ID:
SW O12A
Discharge Structure:
Open ditch
n:
Intake canal, lower
r
terrace of old FGD
construction area
Latitude - Longitude:
35035'57", 80057'44"
Drainage Area:
1.0 acres
Percent Impervious:
0
Permit Monitoring
Table 8
Table:
Location: Marshall Steam Station
Permit No. NCS000548
Industrial Activities The SW012A drainage area is comprised of vegetated slopes and lowland
and Description: area on the north side of the FGD facility. In the lowland area adjacent to
the intake canal there is an abandoned erosion protection and sediment
control measure. This sediment basin was originally used during the FGD
construction. The lower berm has been removed and the area has been
allowed uncontrolled vegetation growth. The area contains trees and other
woody vegetation.
Significant Inert Materials: Various quantities of construction materials
Materials/Potential including valves, piping and other inert materials
Pollutants: may be stored on the gravel storage area north of
the FGD at various times. _
BMP Summary: Fugitive Dust Emissions
• Establish procedures to minimize offsite tracking of dust.
Material Storage Areas
• Control leakage or spillage from vehicles or containers and ensure
that proper protective measurement.
• Cover material with a temporary covering made of polyethylene,
polyurethane, polypropylene, or hypalon.
• Provide diversion berms, dikes or grassed swales around the
perimeter of the area to limit run-on.
• Construct an enclosure or build a berm around the area.
• Regularly sweep area to minimize debris on the ground.
• Train employees in spill prevention, control, cleanup and proper
materials management techniques.

SDO Narrative Description and BMP Summary
Outfall ID:
Discharge Structure:
Location:
Latitude - Longitude:
Drainage Area:
Percent Impervious:
Permit Monitoring
Table:
Industrial Activities
and Description:
Significant
Materials/Potential
Pollutants:
P Summary:
SW 022
18" HDPE
North bank of
discharge canal
35035'44", 80057'52"
0.8 acres
0%
Table 9
The SW022 drainage area is comprised of a portion of the paved FGD
facility access road, paved road ditch, gravel laydown and vegetated /
wooded embankment slopes.
KE
ENERGY
Location: Marshall Steam Station
Permit No. NCS000548
None.
Fugitive Dust Emissions
• Establish procedures to minimize offsite tracking of dust.
Delivery Vehicles
• Wash vehicles before they leave the site in a designated area where
wash water can be controlled.
• Develop procedure for the inspection of all vehicles arriving on the
plant site and ensure overall integrity of the body or container.

SDO Narrative Description and BMP Summary
Outfall ID:
Discharge Structure:
Location:
Latitude - Longitude:
I Drainage Area:
Percent Impervious:
Permit Monitoring
Table:
Industrial Activities
and Description:
SW 025
2 — 24" HDPE
Upgradient of drainage
35035'44", 80057'52"
222.6 acres
DUKE
ENERGY
Location: Marshall Steam Station
Permit No. NCS000548
0% f
x
N/A / New Outfall J
The SW025 drainage area is comprised of offsite drainage into the site from
the southwest and industrial stormwater from the structural fill / landfill
collection area. These flow are collected within an onsite pond north of the
ash basin / decanting area and pumped north and east to the drainage area
pond, which is riprapped and through the outfall.
Significant Inert Materials: Various quantities of construction equipment,
Materials/Potential stockpiles of gravel or dirt, truck trailers, and other
Pollutants: inert materials may be stored on the gravel
storage area at various times. Sediment from
various construction activities upgradient of
drainage area.
BMP Summary: Sediment
• Riprap lined pond for sump / settling
Fugitive Dust Emissions
• Establish procedures to minimize offsite tracking of dust.
Material Storage Areas
• Control leakage or spillage from vehicles or containers and ensure
that proper protective measurement.
• Cover material with a temporary covering made of polyethylene,
polyurethane, polypropylene, or hypalon.
• Provide diversion berms, dikes or grassed swales around the
perimeter of the area to limit run-on.
• Construct an enclosure or build a berm around the area.
• Regularly sweep area to minimize debris on the ground.
• Train employees in spill prevention, control, cleanup and proper
materials management technioues.

Attachment 5
Narrative of Significant Changes at Marshall Steam Station

Marshall Steam Station
Industrial Activity Changes
The most significant changes at the site since the issuance of permit NCS000548 on May 15, 2015
include the following:
• Designation of the Constructed Wetland Treatment System is now inactive
• Addition of drainage area and SDO SW025 in the northern portion of the site to the permit
• The following SDOs are now abandoned or permitted under the wastewater NPDES permit:
SW001, SW001A, SW006, SW009 and SW023. SW024 was permitted but never installed and
now does not plan to be installed.
• Update of the drainage area description for SW012
• Addition of the Lined Retention Basin (LRB) and holding basin on the Appendix C — Site Map in
place of the former borrow soil area
• Significant drainage at the station now being collected and sent to the Lined Retention Basin
versus the ash basin.

Attachment 6
Certification of Development and Implementation of
Stormwater Pollution Prevention Plan

STORMWATER POLLUTION PREVENTION PLAN
DEVELOPMENT AND IMPLEMENTATION
CERTIFICATION
North Carolina Division of Energy, Mineral, and Land Resources - Stormwater Permitting
Facility Name:
Permit Number:
Location Address:
County:
Marshall Steam Station
NCS000548
8329 East NC Hwy 150
_Terrell. NC 202 _
Catawba
"I certify, under penalty of law, that the Stormwater Pollution Prevention Plan (SPPP) document and all
attachments were developed and implemented under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information required by the SPPP.
Based on my inquiry of the person or persons who manage the system, or those persons directly responsible
for gathering the information, the information gathered is, to the best of my knowledge and belief, true,
accurate and complete."
And
"I certify that the SPPP has been developed, signed and retained at the named facility location, and the SPPP
has been fully implemented at this facility location in accordance with the terms and conditions of the
stormwater discharge permit."
And
"I am aware that there are significant penalties for falsifying information, including the possibility of fines and
imprisonment for knowing violations."
Sign (according to permit signatory requirements) and return this Certification. DO NOT
SEND STORMWATER POLLUTION PREVENTION PLAN WITH THIS CERTIFICATION.
Signature
October 24, 2019
l.1 Date
Print or type name of person signing above
General Manager III
Title
SPPP Certification 10/13

Attachment 7
Fish Tissue Sampling Results

Table 1. Arsenic, selenium, and mercury concentrations (fresh weight) in axial muscle of fish from Lake
Norman during 2015-2017'.
Dry -to -
fresh
Length
Weight
As
Se
Hg
weight
Fish species
Location
Sample date
(mm)
(g)
W/O
W/O
W/O
ratio
Redear Sunfish
UP
April 2014
241
245
0.06
0.56
<0.06
0.208
Redear Sunfish
UP
April 2014
258
311
0.08
0.50
<0.05
0.199
Redear Sunfish
UP
April 2014
243
276
0.10
0.56
<0.05
0.201
Redear Sunfish
UP
April 2014
234
222
0.04
0.58
<0.06
0.208
Redear Sunfish
UP
April 2014
220
176
0.08
0.82
<0.06
0.209
Redear Sunfish
UP
April 2014
240
254
0.11
0.53
<0.06
0.211
Alabama Bass
UP
April 2014
350
564
0.19
0.39
<0.06
0.207
Alabama Bass
UP
April 2014
355
522
0.23
0.37
<0.06
0.208
Alabama Bass
UP
April 2014
378
590
0.10
0.40
<0.05
0.201
Alabama Bass
UP
April 2014
340
512
0.22
0.40
<0.06
0.224
Alabama Bass
UP
April 2014
380
611
0.16
0.47
<0.05
0.198
Alabama Bass
UP
April 2014
358
523
0.06
0.39
<0.06
0.205
Redear Sunfish
DI
April 2014
254
202
0.11
0.78
<0.05
0.181
Redear Sunfish
DI
April 2014
271
345
0.10
0.64
<0.06
0.207
Redear Sunfish
DI
April 2014
172
82
0.10
0.64
<0.05
0.193
Redear Sunfish
DI
April 2014
275
380
0.08
0.66
<0.05
0.200
Redear Sunfish
DI
April 2014
186
107
0.10
0.58
<0.06
0.208
Redear Sunfish
DI
April 2014
185
94
0.10
0.62
<0.06
0.208
Alabama Bass
DI
April 2014
380
668
0.15
0.62
<0.06
0.215
Alabama Bass
DI
April 2014
392
692
0.19
0.43
<0.06
0.215
Alabama Bass
DI
April 2014
424
972
0.11
0.53
0.09
0.213
Alabama Bass
DI
April 2014
338
458
0.13
0.44
<0.06
0.211
Alabama Bass
DI
April 2014
393
702
0.08
0.44
0.13
0.210
Alabama Bass
DI
April 2014
435
1136
0.08
0.74
0.21
0.212
Redear Sunfish
DN
April 2014
268
340
0.06
0.77
<0.06
0.209
Redear Sunfish
DN
April 2014
261
288
0.10
0.83
<0.05
0.202
Redear Sunfish
DN
April 2014
195
109
0.04
0.37
<0.03
0.098
Redear Sunfish
DN
April 2014
186
100
0.06
0.82
<0.06
0.206
Redear Sunfish
DN
April 2014
177
89
0.04
0.80
<0.06
0.204
Redear Sunfish
DN
April 2014
195
118
0.04
0.71
<0.06
0.210
Alabama Bass
DN
April 2014
429
890
0.08
0.68
<0.05
0.201
Alabama Bass
DN
April 2014
404
696
0.08
0.66
<0.05
0.199
Alabama Bass
DN
April 2014
367
546
0.08
0.56
<0.06
0.206
Alabama Bass
DN
April 2014
416
864
<0.04
0.57
<0.05
0.185
Alabama Bass
DN
April 2014
359
602
0.16
0.57
<0.05
0.203
Alabama Bass
DN
April 2014
361
562
0.10
0.56
<0.06
0.208
Redbreast Sunfish
UP
April 2015
251
261
0.06
0.31
<0.06
0.204
Redbreast Sunfish
UP
April 2015
227
200
0.07
0.35
0.09
0.197
Redbreast Sunfish
UP
April 2015
259
306
0.06
0.28
0.09
0.183
Redbreast Sunfish
UP
April 2015
247
186
0.06
0.34
0.24
0.167
Redbreast Sunfish
UP
April 2015
231
190
<0.04
0.24
0.09
0.198
Redbreast Sunfish
UP
April 2015
238
213
0.04
0.33
0.11
0.190
1 Fish were collected for trace elemental analyses during April 2018 and March and April 2019, however these
results are not yet available.
1

Dry -to -
fresh
Length
Weight
As
Se
Hg
weight
Fish species
Location
Sample date
(mm)
(g)
(µg/g)
(µg/g)
(µg/g)
ratio
Alabama Bass
UP
April 2015
448
1110
0.07
0.25
0.28
0.179
Alabama Bass
UP
April 2015
410
780
0.05
0.36
0.31
0.211
Alabama Bass
UP
April 2015
430
831
0.05
0.18
0.13
0.172
Alabama Bass
UP
April 2015
417
924
0.07
0.35
0.27
0.196
Alabama Bass
UP
April 2015
372
773
0.05
0.21
0.19
0.172
Alabama Bass
UP
April 2015
457
1224
0.04
0.33
0.30
0.191
Alabama Bass
DI
March 2015
462
1242
<0.04
0.39
0.26
0.193
Alabama Bass
DI
March 2015
458
1342
<0.04
0.48
0.35
0.186
Largemouth Bass
DI
March 2015
447
1152
0.05
0.34
0.25
0.186
Largemouth Bass
DI
March 2015
475
1575
0.08
0.52
0.32
0.188
Largemouth Bass
DI
March 2015
490
1788
0.08
0.34
0.26
0.179
Alabama Bass
DI
March 2015
438
1106
0.06
0.31
0.23
0.198
Redear Sunfish
DI
April 2015
218
160
0.21
0.56
0.11
0.202
Redear Sunfish
DI
April 2015
215
171
0.21
0.71
0.08
0.212
Redear Sunfish
DI
April 2015
252
248
0.17
0.73
0.16
0.182
Redear Sunfish
DI
Apri12015
280
352
<0.04
0.60
0.18
0.192
Redear Sunfish
DI
April 2015
257
296
0.10
0.59
0.15
0.185
Bluegill
DI
April 2015
210
173
<0.04
0.37
0.17
0.183
Alabama Bass
DN
April 2015
330
430
<0.04
0.36
0.17
0.198
Alabama Bass
DN
Apri12015
385
685
0.09
0.27
0.20
0.195
Alabama Bass
DN
April 2015
360
545
0.05
0.38
0.18
0.189
Alabama Bass
DN
April 2015
400
730
0.05
0.38
0.17
0.182
Alabama Bass
DN
Apri12015
375
604
0.05
0.36
0.19
0.187
Alabama Bass
DN
Apri12015
350
479
0.08
0.29
0.27
0.193
Redear Sunfish
DN
Apri12015
250
278
0.07
0.50
0.13
0.193
Bluegill
DN
Apri12015
187
125
<0.04
0.39
0.16
0.190
Redear Sunfish
DN
Apri12015
194
109
0.18
0.51
0.12
0.181
Redear Sunfish
DN
Apri12015
185
99
0.06
0.51
0.11
0.191
Bluegill
DN
April 2015
194
150
0.17
0.34
0.09
0.196
Bluegill
DN
Apri12015
202
167
0.21
0.27
0.13
0.208
Bluegill
UP
Apri12016
170
79
0.04
0.23
0.15
0.189
Bluegill
UP
April 2016
166
84
<0.04
0.17
0.14
0.191
Bluegill
UP
April 2016
163
80
<0.04
0.21
0.09
0.188
Bluegill
UP
Apri12016
177
98
<0.04
0.22
0.07
0.191
Bluegill
UP
April 2016
158
68
<0.04
0.19
0.10
0.184
Bluegill
UP
April 2016
156
67
<0.04
0.22
<0.05
0.192
Alabama Bass
UP
Apri12016
440
998
<0.04
0.22
0.28
0.179
Alabama Bass
UP
Apri12016
316
349
0.09
0.20
<0.06
0.210
Alabama Bass
UP
April 2016
405
788
0.13
0.19
0.10
0.188
Alabama Bass
UP
April 2016
315
272
0.13
0.19
0.11
0.196
Alabama Bass
UP
Apri12016
315
375
0.08
0.19
0.12
0.205
Alabama Bass
UP
April 2016
400
656
0.10
0.22
0.26
0.179
Bluegill
DI
April 2016
194
135
<0.04
0.46
0.14
0.200
Bluegill
DI
April 2016
180
103
<0.04
0.45
0.11
0.195
Bluegill
DI
Apri12016
163
81
<0.04
0.38
0.09
0.194
Bluegill
DI
April 2016
172
84
0.10
0.31
0.17
0.189
Bluegill
DI
April 2016
156
69
<0.04
0.32
<0.05
0.198
Bluegill
DI
Apri12016
162
68
0.06
0.34
0.11
0.188
Alabama Bass
DI
April 2016
410
616
0.04
0.52
0.35
0.172
2

Dry -to -
fresh
Length
Weight
As
Se
Hg
weight
Fish species
Location
Sample date
(mm)
(g)
(µg/g)
(µg/g)
(µg/g)
ratio
Alabama Bass
DI
April 2016
404
764
0.10
0.35
0.22
0.194
Alabama Bass
DI
April 2016
474
1156
<0.04
0.41
0.28
0.178
Alabama Bass
DI
April 2016
384
640
0.13
0.27
0.14
0.207
Alabama Bass
DI
April 2016
455
993
0.05
0.39
0.29
0.180
Alabama Bass
DI
April 2016
450
1125
0.09
0.31
0.25
0.204
Green Sunfish
DN
November 2016
166
80
<0.04
0.32
0.07
0.178
Bluegill
DN
November 2016
166
77
<0.04
0.32
0.08
0.187
Redbreast Sunfish
DN
November2016
164
62
<0.04
0.37
0.06
0.200
Bluegill
DN
November2016
151
51
<0.04
0.38
<0.05
0.182
Green Sunfish
DN
November 2016
175
111
<0.04
0.32
0.10
0.188
Redbreast Sunfish
DN
November 2016
151
52
<0.04
0.36
0.09
0.189
Alabama Bass
DN
November 2016
241
127
0.06
0.40
0.13
0.208
Alabama Bass
DN
November 2016
270
210
0.04
0.41
0.12
0.216
Alabama Bass
DN
November 2016
312
319
<0.04
0.37
0.07
0.207
Alabama Bass
DN
November2016
276
228
<0.04
0.47
0.07
0.206
Largemouth Bass
DN
November2016
284
242
0.07
0.49
0.14
0.212
Largemouth Bass
DN
November 2016
239
138
0.07
0.45
0.12
0.204
Redear Sunfish
UP
March 2017
252
266
<0.04
0.30
<0.05
0.199
Redear Sunfish
UP
March 2017
272
335
<0.04
0.26
<0.06
0.206
Redear Sunfish
UP
March 2017
227
205
<0.04
0.24
<0.06
0.213
Redear Sunfish
UP
March 2017
225
194
<0.04
0.24
<0.06
0.213
Redear Sunfish
UP
March 2017
263
342
<0.04
0.35
<0.06
0.211
Redear Sunfish
UP
March 2017
277
394
<0.04
0.34
0.07
0.206
Alabama Bass
UP
March 2017
395
670
<0.04
0.19
0.27
0.207
Alabama Bass
UP
March 2017
390
660
<0.04
0.18
0.16
0.193
Alabama Bass
UP
March 2017
367
547
<0.04
0.23
0.12
0.215
Alabama Bass
UP
March 2017
445
1050
<0.04
0.24
0.21
0.201
Alabama Bass
UP
March 2017
353
467
<0.04
0.19
0.15
0.208
Alabama Bass
UP
March 2017
396
776
<0.04
0.24
0.06
0.212
Redear Sunfish
DI
March 2017
194
105
<0.04
0.64
<0.06
0.211
Bluegill
DI
March 2017
181
96
<0.04
0.38
<0.05
0.197
Alabama Bass
DI
March 2017
362
544
<0.04
0.32
0.10
0.196
Alabama Bass
DI
March 2017
355
537
<0.04
0.26
0.16
0.202
Alabama Bass
DI
March 2017
334
380
<0.04
0.35
0.07
0.206
Alabama Bass
DI
March 2017
395
700
<0.04
0.31
0.20
0.198
Alabama Bass
DI
March 2017
361
566
<0.04
0.36
0.13
0.202
Alabama Bass
DI
March 2017
328
380
<0.04
0.37
0.09
0.216
Redear Sunfish
DI
October 2017
178
91
<0.04
0.61
<0.06
0.207
Redbreast Sunfish
DI
October 2017
182
91
<0.04
0.48
0.14
0.209
Redbreast Sunfish
DI
October 2017
180
94
<0.04
0.46
<0.05
0.182
Redbreast Sunfish
DI
October 2017
181
105
<0.04
0.51
<0.06
0.211
Alabama Bass
DN
March 2017
350
485
<0.04
0.38
0.08
0.201
Alabama Bass
DN
March 2017
362
563
<0.04
0.37
<0.06
0.212
Alabama Bass
DN
March 2017
397
739
<0.04
0.41
<0.06
0.209
Alabama Bass
DN
March 2017
385
729
<0.04
0.48
<0.06
0.210
Alabama Bass
DN
March 2017
336
440
<0.04
0.45
0.14
0.207
Alabama Bass
DN
March 2017
354
560
<0.04
0.33
0.16
0.216
Redear Sunfish
DN
October 2017
210
146
<0.04
0.81
<0.06
0.207
Redear Sunfish
DN
October 2017
219
177
<0.04
0.78
0.06
0.212
3

Dry -to -
fresh
Length
Weight
As
Se
Hg
weight
Fish species
Location
Sample date
(mm)
(g)
(µg/g)
(µg/g)
(µg/g)
ratio
Redear Sunfish
DN
October 2017
222
174
<0.04
0.83
<0.06
0.204
Redear Sunfish
DN
October 2017
204
128
<0.04
0.72
<0.05
0.202
Redbreast Sunfish
DN
October 2017
186
120
<0.04
0.56
<0.05
0.191
Redear Sunfish
DN
December 2017
--
--
<0.04
0.92
0.09
0.208
4

FISH TISSUE MONITORING
STUDY PLAN MAP
Marshall Steam Station
%•� DUKE
ENERGY
UP
MSS AB
Discharge
(Outtall 002)
Marshall
Steam —
Station
C
•
Denver
DN
`•i
1 Cowans
Ford Dam (
0 0.5 1 2 Milos
McGuire Nuclear
0 0.75 1.5 3 Kilometels Station
Hwy 150''---,
a
Figure 1. Sampling areas for trace element fish tissue monitoring in Lake Norman.
A
A
Mooresville
(2 mi.)
Davidson
Hwy 73
Charlotte, NC
(14 mi.)
2018 M35 tE Fl.h 3—t)
20,
rot p g
r„, Lw