NC0004987_Lake Norman 316(a) Study Plan_20180305

DUKE Marshall Steam Station
ENERGY® Duke Energy
8320 East Hwy 150
CAROLINAS Terrell NC 28682
RECEIVED/DENR/D R
March 5, 2018 MAR 1-3 2018
Water Resources
NC DEQ, Division of Water Resources NC DEQ Permitting Section
WQ Permitting Section — NPDES Water Sciences Section
1617 Mail Service Center 1621 Mail Service Center
Raleigh, NC 27699-1617 Raleigh, NC 27699-1621
Attn: Sergei Chernikov Attn: Cyndi Karoly
Subject: Duke Energy Marshall Steam Station, NPDES Permit NC0004987
2018 Lake Norman 316(a) Study Plan
Dear Sir or Madam:
The purpose of this letter is to transmit a copy of the 2018 Lake Norman 316(a) Study Plan to
the North Carolina Department of Environmental Quality (NC DEQ) as required in Section A.
(26) of the Marshall Steam Station NPDES Permit NC0004987. The 2018 Study Plan, originally
submitted to NC DEQ in October 2017 for the McGuire Nuclear Station NPDES Permit
NC0024392, has been reviewed and approved as per NC DEQ response letter dated November
10, 2017 indicating no objections to its contents. This is a lakewide study plan that will be used
to also assess thermal effects of Marshall Steam Station
We look forward to your review and approval of the 2018 Study Plan for Marshall Steam
Station/Lake Norman in accordance with the requirements of the NPDES Permit. We will
continue to work with you and your teams as the studies progress. `If you have questions please
feel free to contact either Scott La Sala at 828-478-7820, via email at loseph.lasala@duke-
energy.com or Julie Stahl at 980-875-3834, via email at [e-mail].
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.
Sin rely,
Rick Roper
Marshall Steam Station, Station Manager
General Manager Ill
FHO- Carolinas Coal
attachments
BUILDING SMARTER ENERGY FUTURE" www duke-energy corn

Marshall Steam Station
Duke Energy
8320 East Hwy 150
Terrell NC 28682
cc: Karrie-Jo Shell, USEPA Region 4
(61 Forsyth St, SW, Mail Code 9T25, Atlanta, GA 30303-8960)
bc• Brad Loveland, EHS-CCP P&C
J. Scott La Sala, Marshall
Julie Stahl, EHS-Water Resources
UPS tracking -
NCDEQ, DWR 1Z8955X40397237477
NCDEQ,Water Sciences 1Z8955X40395968084
USEPA 1Z8955X40399491699
www duke-energy corn

ATTACHMENT: 2018 LAKE NORMAN 316(a) STUDY PLAN

2018 LAKE NORMAN 316(a) STUDY PLAN
Marshall Steam Station
MONITORING CATEGORY FREQUENCY LOCATIONS
Fisheries
• Electrofishing Spring and Fall Lakewide (32 Transects; see map)
Water Quality
• Field/In Situ—Profile/Other Quarterly Lakewide (15 Locations; see map)
Water Chemistry
• Lab/Analytical—Surface Quarterly Lakewide (15 Locations; see map)
• Lab/Analytical—Photic Zone Quarterly Lakewide (15 Locations; see map)
Productivity
• Lab/Analytical—Photic Zone Quarterly;When Algal Bloom Lakewide (15 Locations; see map)
is Indicated (phytoplankton)
Habitat Formers
• Survey Summer Lakewide
Vertebrate Wildlife
• Survey Summer Thermal discharge area
WATER QUALITY/WATER CHEMISTRY/PRODUCTIVITY MONITORING VARIABLES
Water Quality
• Field/In Situ—Profile Surface to 10m @ 1m intervals, 10m to bottom @ 2m intervals.
Temperature, Dissolved Oxygen (DO),Specific Conductance, pH.
• Field/In Situ—Surface/Other Turbidity,Secchi Depth
Water Chemistry
• Lab/Analytical—Surface Major ions(Ca, Mg, CI, SO4), Hardness (calculated),Total and
Dissolved Metals (Cu, Zn), Nutrients (TP,TKN, NO3+ NO2, NH3,
OrthoP)
Productivity
• Lab/Analytical—Photic Zone Chlorophyll a; Phytoplankton Identification and Density(only
when a bloom is indicated)

2018 LAKE NORMAN 316(a) STUDY PLAN
Marshall Steam Station
N
(,}--' c o� it fl s
0 ,. oy • '-'-",
A
Sampling Locations: j i ` Area D
O Water Quality a
4 _.5 r"Electrofishing LJ A
Ajt
i.
t,,)
-Y'r)/‘k-,,-, ,S\' &,,V.7! e{
"lir
• ),„ ` -\,1•A 41')°c:,
Marshall
Steam WY 1 ' Mooresville
•
Station (2 mi.)
j
0
0
oc.,c_71
11111111 ,
Area C 1
.%
Area D 'NC
'-_
Denver c Okikk t tf'
c f-1 r�l
C",
r
O
- ' Area B '
--,L )L.4.--
4 •
T Davidson
r
I .
•
• '
,r `
Area A t I
Cowans Hwy 73 /
0 0.5 1 2 Miles Ford Darn • to
? I Charlotte 1
I McGuire Nuclear • (14 mi.)
0 0.75 1.5 3 Kilometers Station