NC0004987_Fish Tissue Study Plan_20180904

efoN DUKE Marshall Steam Station
ENERGYm DEEnergy 8320 E..Hwy 1 150 50
CAROLINAS Terrell,NC 28682
828 478-7820
•
September 4, 2018
NC DEQ, Division of Water Resources NC DEQ, Division of Water Resources
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
RECEIVED/DENR/DWR
Subject: Duke Energy Carolinas, LLC SEP 0 7 201
Marshall Steam Station
NPDES Permit NC0004987 Water Resources
Fish Tissue Monitoring of Lake Norman Study Plan Permitting Section
Dear Sir/Madam:
The purpose of this letter is to transmit a copy of the Marshall Fish Tissue Monitoring of
Lake Norman Study Plan (Fish Tissue Study Plan) to the North Carolina Department of
Environmental Quality (NC DEQ) as required in Section A. (29) of the Marshall Steam
Station NPDES Permit NC0004987.
We look forward to your review and approval of the Fish Tissue Study Plan for Marshall
Steam Station. If you have any questions related to this submittal please feel free to
contact either Scott LaSala at 828-478-7820, via email at joseph.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 relyg
•
Rick Roper
General Manager Ill
Marshall Steam Station
attachment
BUILDING A SMARTER ENERGY FUTURE'

Fish Tissue Monitoring of Lake Norman Study Plan
Duke Energy Carolinas LLC, Marshall Steam Station
NPDES Permit NC0004987
Page 2
bc:w/attachment Brad Loveland - Duke Energy EHS-CCP Permitting & Compliance
Julie Stahl, Duke Energy EHS-Water Resources Group
Scott La Sala, EHS Environmental Field Support
Record Type Code: ENV-50-02
Document Number: 8-6
UPS - Sergei Chernikov, DWR Permitting 1Z8955X40395108226
Cyndi Karoly, DWR Water Sciences 1Z8955X40395813839

ATTACHMENT: FISH TISSUE MONITORING OF LAKE NORMAN STUDY PLAN

Fish Tissue Monitoring of Lake Norman
Study Plan
Marshall Steam Station
NPDES No. NC0004987
DUKE
ENERGY.
August 2018

Table of Contents
Section Page
1.0 Introduction 2
2.0 Sampling Locations 2
3.0 Target Species for Tissue Monitoring 2
4.0 Field Sampling Methods 2
5.0 Tissue Analysis 3
6.0 Data Analysis and Reporting 3
7.0 References 3
Attachments
Attachment A - Fish Tissue Monitoring-Study Plan Summary and Map
1

1.0 Introduction
Duke Energy Carolinas(DEC) owns and operates the Marshall Steam Station (MSS) located on Lake
Norman in Catawba County,Terrell, North Carolina.The MSS National Pollutant Discharge Elimination
System (NPDES) Permit(No. NC0004987,Section A.29.) requires DEC to conduct annual trace elements
monitoring in fish muscle tissue, in accordance with a study plan approved by the North Carolina
Department of Environmental Quality(NCDEQ).This study plan outlines the proposed methods for
sampling,analyzing,and data reporting to fulfill these NPDES permit monitoring requirements. DEC
recognizes that the specifics of this plan may need to be modified to reflect information gained during
implementation.Any such modifications shall be subject to NCDEQ approval.
2.0 Sampling Areas
Target fish will be collected from three locations on Lake Norman(see attached map)for trace element
analysis of muscle tissue.Area UP is located between approximately 4 kilometers and 10 kilometers
upstream of the MSS discharge and will serve as a reference location to monitor background trace
element concentrations in fish muscle tissue.Area DI is in the vicinity of the MSS discharge canal and will
serve to monitor potential near-field uptake of elements in fish muscle tissue.Area DN is located
between approximately 11 kilometers and 17 kilometers downstream of the discharge and will serve to
monitor far-field uptake of elements in fish muscle tissue.The sampling areas will be similar to those
previously approved for the MSS by NCDEQ(Duke Energy 2013).
3.0 Target Fish Species for Tissue Monitoring
The proposed target species are based on prior sampling experience, likely availability, importance as
fish food, predatory nature of certain species,and general trophic level. DEC personnel will attempt to
collect six individuals of the same species from Micropterus spp. (top predator),and Lepomis spp.
(intermediate predator).Other similar species may be retained if the primary target species are
unavailable.
Specimens retained for analysis will be individuals considered of sufficient size for human consumption.
As recommended by the US Environmental Protection Agency(USEPA),an attempt will be made to
ensure that the size of the smallest individual sampled will not be less than 75%of the total length of
the largest fish within each species group(USEPA 2000).Conformance with this guideline will depend
upon the availability of fish in that size class at a particular sampling station.
4.0 Field Sampling Methods
Standard fishery sampling methods, including active and passive gear types,will be employed to collect
target species. Boat electrofishing(Procedure FSH-250.0, Rev.5),trap nets(Procedure FSH-257.00, Rev.
3),or other standard fishery sampling gear types will be used as necessary to obtain the required
samples. Nets will be checked and captured fish removed daily during the sampling period.
Fish retained for trace elements analysis will be identified to species, measured for total length to the
nearest millimeter,weighed to the nearest gram,and placed in a labeled(sample date,sample location,
2

facility,etc.)bag on ice.This information will be recorded on field fisheries data sheets(generally
electronic). Each day the sealed bags of collected fish will be frozen in deep freezers.Only fresh fish that
show no signs of deterioration will be retained for analysis. Fish that have visible,open wounds that
could allow contamination will not be retained.
Supporting information will be collected during each trip including temperature,dissolved oxygen,
specific conductivity,and pH from the surface of each sampling location.Other environmental
conditions may be recorded during each sampling period such as weather conditions and lake level as
appropriate.
5.0 Tissue Analyses
All fish will be processed in the laboratory for metals analysis according to Procedure NR-00107 Rev.4
Trace Element Monitoring Laboratory Procedure(approved SOP on file with NCDEQ).Sample custody
and tracking of samples will be performed using chain-of-custody forms during transport to or from the
laboratory. Quality of vendor laboratory data, if applicable,will be ensured through the use of National
Institute of Standards and Technology(NIST)tissue standards.The remaining processed sample will be
archived for two years in the event that re-analysis is needed.
6.0 Data Analysis and Reporting
Arsenic,mercury, and selenium concentrations(converted to pg/g fresh weight)determined from the
fish tissue analyses will be reported.A report with the sampling methods, data analysis,and conclusions
will be prepared and submitted with the subsequent NPDES permit renewal application as required by
NPDES Permit No. NC0004987.
7.0 References
Duke Energy.2013.Trace Elements Monitoring in Fish Tissue,Study Plan.Allen Steam Station NPDES No
NC0004979, Buck Steam Station NPDES No. NC0004774, Cape Fear Steam Station NPDES No.
NC0003433, Cliffside Steam Station NPDES No. NC0005088,Marshall Steam Station NPDES No.
NC0004987. Duke Energy Corporation. Charlotte, NC.
United States Environmental Protection Agency(US EPA).2000.Guidance for assessing chemical
contaminant data for use in fish advisories,vol. 1. Fish sampling and analysis,third edition. EPA
823-B-00-007. US EPA,Office of Water.Washington,DC.
3

Attachment A
Fish Tissue Monitoring-Study Plan Summary and Map
Marshall Steam Station
PROGRAM FREQUENCY LOCATION
Trace Elements: Annual Mid and upper lake;
Fish (arsenic, mercury,selenium) Areas UP, DI, DN
FISH TISSUE MONITORING 44
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