NC0004987_Regional Office Historical File Pre 2018

Water Resources
ENVIRONMENTAL QUALITY
Mr. Rick Roper, General Manager lII
Duke Energy Carolinas, LLC
8320 E NC 150 Hwy.
Terrell, North Carolina 28682
PAT MCCRORY
Govemor
DONALD R. VAN - DER VAART
Seeretwy
S. JAY ZIMMERMAN
November 25, 2015
Subject: Toxicity Test Results
Duke Energy/Marshall Steam Station
NPDES Permit No. NC004987
Catawba County
Director
Dear Mr. Roper:
Enclosed is a copy of the toxicity test results relative to the samples collected at the subject
facility on November 3 and 5, 2015 by Mr. Wes Bell of this Office. Whole effluent samples were
collected for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. The test passed utilizing these
samples.
The report should be self-explanatory; however, should you have any questions concerning this
report, please do not hesitate to contact Ms. Carol Hollenkamp at [phone] and/or Mr. Wes Bell at
[phone], or at [e-mail] and wes.bellancdenr.gov.
Sincerely, l/J
•
JO-Michael L. Parker, Regional Supervisor
Mooresville Regional Office
Water Quality Regional Operations Section
Division of Water Resources, DEQ
Enclosure:
Toxicity Test Results
cc: MSC 1617-Central Files/Basement
Susan Meadows, Aquatic Toxicity Unit
Catawba County. Health Department
WB
State of North Carolina I Environment -Al Quality 1 Water Resources I Water Quality Regional Operations
17wM f' ,r... e..e.,,.. Cir4o. '2llt I 121 t c

Division of Water Resources
November 19, 2015
To: Michael Parker
Water Quality Regional. Operations, MRO
Throu . Cindy A. Moore
Supervisor, Aquatic Toxicology Branch (ATB)
From: Carol Hollenkamp
Quality Assurance • —
r, Aquatic Toxicology -Branch (ATB)
Subject: Whole effluent toxicity test results
Duke Energy Marsh Steam Station.
NPDES Permit # NC0004987/002
Catawba County
The aquatic toxicity test using grab samples of effluent discharged from the Duke Energy Marshall Steam
Station has been completed. Duke Energy Marshall Steam Station has a permitted effluent discharge of
5.3 million gallons per day (MGD) entering the Catawba River (7Q10 of 60 CFS). Whole effluent
samples were collected on November 3rd and Novernber 5th by Wes Bell and facility representative Scott
LaSala for use in a chronic Ceriodaphnia dubia pass -fail toxicity test. This test passed. Toxicity test
information follows.
Test Type 3-Brood Ceriadaphnia dubia chronic pass fail
Test Concentrations 12%
Test Result Pass
Control Survival 100%
Control Mean Reproduction 30.7 neonates
Test Treatment Survival 100%
Treatment Mean Reproduction 32.9 neonates
First Sample pH 7,05SU
First Saniple Conductivity 959 microtnho
First Sample Total Residual Chlorine <0.10 mg/L
Second Sample pH 7.25 SU
Second Sample Conductivity 1045 microrohosicrn
Second Sample Total Residual Chlorine <0.10 rngfL
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts. These samples were split with Environmental Testing Solutions, Inc. The test conducted by
Environmental Testing Solutions, Inc., also passed, Please contact us if you have any questions or if
further effluent toxicity monitoring is desired. We may be reached at [phone].
Basin: CT1332
cc: Central Files
Wes Bell (MR0),
Aquatic Toxicology Branch Water Sciences Section

AlP7A
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue CoEeen H. Sullins
Governor Director
Ms. Donna Burrell, ORC
Duke Power Marshall Steam Station
8320 E. NC 150 Hwy
Terrell, North Carolina 28682
Subject:
Dear Ms. Burrell:
May 26, 2009
Toxicity Test Results
Duke Power Marshall Steam Station
NPDES Permit No. NC0004987
Catawba County, NC
Dee Freeman
Secretary
Enclosed is a copy of the toxicity test results relative to the inspection conducted at the subject
facility on May 12 and 15, 2009 by John Lesley of this Office. Whole effluent samples were collected for
use in a chronic pass/fail toxicity test. The test utilizing these samples resulted in a pass.
The report should be self-explanatory; however, should you have any -questions concerning this
report, please do not hesitate to contact Mr. Lesley at [phone].
Sincerely,
bert B. Krebs
Regional Supervisor
Surface Water Protection
Enclosure
cc: Central Files
Susan Meadows, Aquatic Toxicology Unit
Mailing Address
610 East Center Avenue, Suite 30I
Mooresville, NC 28115
Phone [phone]
Fax [phone]
Location
610 East Center Avenue, Suite 301
Mooresville, North Carolina
One
Nor Carolina.
turally
Internet: www.ncwaterqualitv.org Customer Service 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer-50% Recycledll0% Post Consumer Paper

To:
Division of Water Quality
May 22, 2009
Rob Krebs
Regional Supervisor, Surface Water Protection
Through: Cindy A. lvtocc:
Supervisor, Aquatic Toxicg ° Unix
From: Carol Hollenkarp
Quality Assurance Officer, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Duke Power -Marshall 002
NPL)E?S Permit # NC0004987/002
Catawba County
1RO
l
The aquatic toxicity test using grab samples of effluent discharged from Duke Power -Marshall 002 has been
completed. Duke Power -Marshall 002 has an effluent discharge permitted that is 5.3 million gallons per
day (MGD) entering Lake Nortman-Holdselaw Creek arm (7Q10 of 60.0 C1°S). Whole effluent samples
were collected as grab samples on May 12 and May 1.5 by John Lesley for use in a chronic Ceriodaphnia
dubia pass/fail toxicity test. The test using these samples resulted in a pass. Toxicity test information
follows,.
Test Type
Test Concentrations
Test Result
C o rol Survival
Control Mean Reproduction
Test Treatment Survival
Treatment. Mean Reproduction
First Sample pH
First Sample Conductivity
F"first Satmple Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood C.r:r°iodap tra
12.0° sample
Pass
100%
25.0 neonates
1t10%
22,8 neonates
6.77 SU
1124 micro It s/cm
<0.0052 mg/L
6.85 SU
1123 ttticrarmhoslcm
'0.0052 rngllL
Test results for the above samples indicate that tht
impacts on receiving water. Please contact us if fin
reached at (9 19) 743-840 l f
Basin: CTB 32
cc:
Central Files
John Lelsey, MRO
pass/fail
effluent would not be predicted to have water quality
ter effluent toxicity monitoring is desired, We maybe
Aquatic toxicology Unit
rues Section

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
June 15, 2006
Ms. Donna Burrell
Duke Power Marshall Steam Station
8320 E. NC 150
Terrell, NC 28682
Subject: Toxicity Test Results
Duke Power Marshall Steam Station
NPDES Permit No. NC0004987
Catawba County, NC
Dear Ms Burrell:
Alan W. Klimek, P.E. Director
Division of Water Quality
Enclosed is a corrected copy of the toxicity test results relative to the inspection conducted
at the subject facility on May 19, 2006 by John Lesley of this Office. Effluent Samples were
collected on May 16 and 19, 2006 by Division staff for use in a chronic toxicity test. The test
utilizing these samples resulted in a pass.
The report should be self-explanatory; however, should you have any questions concerning
this report, please do not hesitate to contact Mr. Lesley or me at [phone].
D. Rex Gleason, P.E.
Surface Water Protection Regional Supervisor
Enclosure
cc: Central Files
Kevin Bowden, Aquatic Toxicology Unit
Catawba County Health Department
NCDENR
i Carolina
Na`turally
Mooresville Regional Office Division of Water Quality Phone [phone] Customer Service
Internet: www.ncwaterqualitv.org 610 East Center Ave, Suite 301 Mooresville, NC 28115 Fax [phone]
An Equal Opportunity/Affirmative Action Employer — 50°% Recycled/10% Post Consumer Paper

Duke Power Marshall Steam Station ou
NPDES Permit No. NC0004987
Page 2
ole effluent samples were collected on May 16 and 19, 2006 by `t hn Lesley for use in a
chronic C eriodaphnia dubia pass/fail toxicity test. Duke Power Marshall Stearn Station outfall
002 has an effluent discharge permitted at 5.3 MGD entering Lake Norman-Holdsclaw Creek
(7Q10 of 60.0 CIS). The test using these samples resulted in a pass. Toxicity test information
follows:
Test Type
Test Concentration
Test Result
Control Survival
Control Mean. Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia passifail
12% sample
Pass
91.7%
29.1. neonates
1©0%
28.9 neonates
7,22 SU
1.88 mieromhoslcm
<0.0052 mgfl
6.5.4 SU
189 micromihoslcm
<0.0052 mg/1
Test results for these samples indicate that the
water quality irnpacts on the receiving stream.
uent would not be predicted 1-) have

Michael F. Easley, Governs )
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
May 31, 2006
Mr. John Williamson
Duke Energy Corporation
12700 Hagers Ferry Road
Mail Code: MGOIEM
Huntersville, North Carolina 28078
Dear Mr. Williamson:
Subject: Toxicity Test Results
Duke Power Marshall Steam Station
NPDES Permit No. NC0004987
Catawba County, NC
OH
Enclosed is a c py of the toxicity test results relative to the inspection conducted at the
subject facility on 19, 2006 by John Lesley of this Office. Effluent Samples were collected
on h•16 and 19, 2006 by Division staff for use in a chronic toxicity test. The test utilizing
these samples resulted in a pass.
The report should be self-explanatory; however,, should you have any questions concerning
this report, please do not hesitate to contact Mr. Lesley or me at [phone].
Alan W. Klimek, P.E. Director
Division of Water Quality
Sincerely,
. Rex Gleason, P.
l Surface Water Protection Regional Supervisor
Enclosure
cc: Central Files
Kevin Bowden, Aquatic Toxicology Unit
Catawba County Health Department
®VA,
NCDENR
Mooresville Regional Office Division of Water Quality
Internet: www.newaterqualitv.orq 610 East Center Ave, Suite 301 Mooresville, NC 28115
No a Carolina
(aturally
Phone [phone] Customer Service
Fax [phone]
An Equal opportunity/Affirmative Action Employer— 50% Recycled110% Post Consumer Paper

Duke Power Marshall Stearn Station outfall 002
NPDES Permit No. NC0004987
Page 2
Whole effluent samples were collected on M r i 16 and 19, 2006 by John Lesley for use in
a chronic Ceriodaphnia dubia pass/fail toxicity test. Duke Power Marshall Steam Station outfall
002 has an effluent discharge permitted at 5.3 MGD entering Lake Norman-Holdsclaw Creek
(7Q10 of 60.0 CFS). The test using these samples resulted in a pass. Toxicity test information
follows:
Test Type
Test Concentration
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnh dubia pass/fail
1.2% sam.ple
Pass
91.7%
29.1 neonates
100%
28.9 neonates
7.22 SU
188 micromhos/cm
<0.0052 mg/1
6.54 SU
189 micromhos/cm
<0.0052 mg/1
Test results for these samples indicate that the efiiuernt would not he predicted to have
water quality impacts on the receiving stream.

Division of Water Quality
May 24, 2006
RAND
Rex Gleason
Regional Supervisor, Surface ' Water 1
From.: Sandy Mort 4"
Quality Assurance Officer, Aquatic Toxi
Subject: Whole efiltt nt tonicity test results
Duke Power -Marshall 002
NPDES ,Permit # NC00O4987i002
Catawba County
ogy Unit
iT�
ATV'
MAY
The aquatic toxicity test using grab samples of effluent discharged, from Duke Power -
Marshall 002 has been completed. Duke Power -Marshall 002 has an effluent discharge
permitted at 5.3 million gallons per day (MGD) entering Lake Nonnan-Holdsclaw Creek
Arm. (7Q10 of 60,0 CFS). Whole effluent samples were collected on May 16 and 19, 2006
by John Lesley for use in a chronic Ceriodaphnica c'luhica pass/fail toxicity test. The test using
these samples resulted in a pass. Toxicity test information t:ol➢ow's.
Test Type
Test Concentrations
Test Result
Control Survival
Control Mean Reproduction
1"a st Treatment Survival
Treatment. Mean Reproduction.
First Sample p1-1
Fir st Sample Conductivity
l first Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total. Residual Chlorine
Test
samples indicate that
3-Brood Ceriodaplania d
12% sample
Pass
91.7%
29,1 neonates
100°','%
28.9 neonates
7.22 SU
188 micro mhoskin
0.0052 mg'L.
6.54 SU
1.89 niicromhos/cm
<O.0052 mg!L
pass, fail
luent would not be predicted to h
quality lralpacts on receiving water. Please contact us if further effluent toxicity monitoring.
desired. We may be reached at (91.9) 733-2136.
Basin: C'TB32
cc:
Central File
John Lesley, FRO
Unit
E vironmentt
SCienc s Se'cr1O

Michael F. Easley, Governor]
William G. Ross Jr., Secret
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P. E. Director
Division of Water Quality
November 1, 2004
Mr. Michael Ruhe, Manager Water Protection
Duke Energy Corporation
PO Box 1006 (EC11E)
Charlotte, North Carolina 28201-1006
Subject: Toxicity Test Results
Duke Power Marshall Steam Station
NPDES Permit No. NC0004987
Catawba County, NC
Dear Mr. Ruhe:
Enclosed is a copy of the toxicity test results relative to the inspection conducted at the
subject facility on October 22, 2004 by John Lesley of this Office. Effluent Samples were
collected on October 19 and 22, 2004 by Division staff for use in a chronic toxicity test. The test
utilizing these samples resulted in a pass.
The report should be self-explanatory; however, should you have any questions concerning
this report, please do not hesitate to contact Mr. Lesley or me at [phone].
Sincerely,
—.
...27C-\.‘
4 J Rex Gleason, P.E.
Water Quality Regional Supervisor
Enclosure
cc: Central Files
Kevin Bowden, Aquatic Toxicology Unit
Catawba County Health Department
N°AhCarolina
Naturally
M
NCDENR
N. C. Division of Water Quality, Mooresville Regional Office, 610 E. Center Ave. Suite 301, Mooresville NC 28115 [phone] Customer Service
1-877-623-6748

Duke Power Marshall Steam Station
NPDES Permit No. NC0004987
Page 2
Whole effluent samples were collected on October 19 and 22, 2004 by John Lesley for use
in a chronic Ceriodaphnia dubia pass/fail toxicity test. Duke Power Marshall Steam Station has an
effluent discharge permitted at 5.3 MGD entering Lake Norman-Holdsclaw Creek Arm (7Q10 of
60.0 CFS). The test using these samples resulted in a pass. Toxicity test information follows:
Test Type
Test Concentration
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia pass/fail
12% sample
Pass
100%
23.6 neonates
100%
25.8 neonates
6.19 SU
191 micromhos/cm
<0.0052 mg/1
6.46 SU
191 micromhos/cm
<0.0052 mg/1
Test results for these samples indicate that the effluent would not be predicted to have
water quality impacts on the receiving stream.

Division of Water Quality
October 27, 2004
DUM
To: Rex Gleason
Water Quality Supervisor, MRO
t✓`
Through: Matt Matthews''
Supervisor, Aquatic Toxic©logy Unit
From: Sandy Mort-
Quality Assurance Officer, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Duke Power -Marshall 002
NPDES Permit # NC0004987/002
Catawba County
The aquatic toxicity test using grab samples of effluent discharged from. Duke Power -Marshall,
002 has been completed. Duke Power -Marshall 002 has an effluent discharge permitted at 5.3
million gallons per day (MGD) entering Lake Norman-Holdsclaw Creek Arm (7Q1.0 of 60.0
US). Whole effluent samples were collected on October 19 and 22, 2004 by John Lesley for
use in a chronic Ceriodaphnia dubia pass/fail toxicity test. The test using these samples resulted
in a pass. Toxicity test information follows.
Test Type.
Test Concentrations.
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment MeanReproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total. Residual Chlorine
3-Brood Ceriodaphnia ulna pass/fail
12% sample
Pass
100%
23.6 neonates
100%
25.8 neonates
6..19 SU
191 micromho/cm
<0.0052 mg/L
6.46 SU
191. micromhos/cm
<0.0052 m°L
Test results for these samples indicate that the effluent would not be predicted to have water
quality impacts on receiving water. Please contact us if further effluent toxicity monitoring is
desired. We may be reached at [phone].
Basin: CTB32
cc: Central Files
Aquatic '"ax!c-
Eno • iunenta1 Sciences Section

Division of Water Quality
- Aquatic Toxicology Unit
October 30, 2003
NOV 07 2003
MEMORANDUM
To: Rex Gleason
Water Quality Supervisor, MRO
Through: Matt Matthews Pr'
Supervisor, Aquatic Toxicology Unit
From: Sandy Mort
Quality Assurance Officer, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Duke Power -Marshall 002
NPDES Permit # NC0004987/002
Catawba County
The aquatic toxicity test using grab samples of effluent discharged from Duke Power -Marshall 002
has been completed. Duke Power -Marshall 002 has an effluent discharge permitted at 5.3 million
gallons per day (MGD) entering Lake Norman-Holdsclaw Creek Arm (7Q10 of 60.0 CFS). Whole
effluent samples were collected on October 21 and 24, 2003 by John Lesley for use in a chronic
Ceriodaphnia dubia pass/fail toxicity test. The test using these samples resulted in a pass. Toxicity
test information follows.
Test Type
Test Concentrations
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia pass/fail
12% sample
Pass
91.7%
22.7 neonates
100%
22.2 neonates
6.90 SU
176 micromhos/cm
<0.0052 mg/L
6.60 SU
175 micrornhos/cm
<0,0052 mg/L
Test results for these samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. Please contact us if further effluent toxicity monitoring is desired. We
may be reached at [phone].
Basin: CTB32
cc:
Central Files
Environmental Sciences Branch. Water Quality Section

Division of Water Quality
- Aquatic Toxicology Unit
November 22, 2002.
DUNI
To: Rex Gleason
Water Quality Supervisor, MR.)
Through: Matt Matthews
Supervisor, Aquatic Toxicology 'Unit
From: Sandy Mort •
Quality Assurance Officer, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Duke Power -Marshall 002
NPDES Permit # NC0004987/002
Catawba County
RESOURCES
li0\1 2 6 2002
The aquatic toxicity test using grab samples of effluent discharged from Duke Power -Marshall 002 has
been completed. Duke Power -Marshall 002 has an effluent discharge permitted at 5.3 million gallons per
day (MGD) entering Holdsclaw Creek Arm of Lake Norman (7Q10 of 60.0 CFS), Whole effluent
samples were collected on November 12 and 15 by John :Lesley for use in a chronic Ceriodaphnia dubia
pass/fail toxicity test. The test using these samples resulted in a pass, but these results should not be used
for compliance monitoring purposes. The test was invalid due to control performance not meeting QC
criteria ((TV >40.0%). Toxicitytest information follows.
Test Type
Test Concentrations
Test Result
Control Survival
Control .Mean Reproduction
Test Tre,atment Scrvival
Treatment Mean Reproduction
First Sample, pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia pass/fail
12% sample
Pass (Invalid)
9.1.7%
24.3 neonates.
.100%
26.8 neonates
6.50 SU
174 micromhos/cm
<0.0300 mg/L
6..63 SU
181 micromh.os/cm
<0.0300 mg/1.,
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. Please contact us if further effluent toxicity monitoring is desired. We may
be reached at [phone].
Basin: CTB32
cc:
Central Files
Environmental Sciences Branch Water Quality Section

O��9Q
ichael F. Easley
Governor
r William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
NCDEN�i
November 27, 2002
Mr. Michael Ruhe, Manager Water Compliance
Duke Power Company
13339 Hagers Ferry Road MGO3A5
Huntersville, North Carolina 28078-7929 .
Subject: Toxicity Test Results
Duke Power Company - Marshall Stearn Station
NPDES Permit No. NC0004987
Catawba County, NC
Dear Mr. Ruhe:
Enclosed is a copy of the toxicity test results relative to the inspection conducted at the
subject facility on November 12, 2002 by John Lesley of this Office. Effluent Samples were
collected on November 12 and 15, 2002 by Division staff for use in a chronic toxicity test. The
test utilizing these samples resulted in a pass; however, the test was not used for compliance
judgement because it did not meet quality control criteria.
The report should be self-explanatory; however, should you have any questions concerning
this report, please do not hesitate to contact Mr. Lesley or me at [phone].
Sincerely,
PL. D. Rex Gleason, P.E.
�r Water Quality Regional Supervisor
Enclosure
cc: Central Files
Kevin Bowden, Aquatic Toxicology Unit
Catawba County Health Department
Customer Service
1 800 625-7748
Mooresville Regional Office, 919 North Main Street, Mooresville, NC 28115 PHIJNE [phone]
FAX (704) 6F.3-6040

Duke Power - Marshall Steam Station
NPDES Permit No. NC0004987/002
Page 2
Whole effluent samples were collected on November 12 and 15, 2002 by Division staff
for use in a chronic Ceriodaphnia dubia pass/fail toxicity test. Marshall Steam Station has an
effluent discharge permitted at 5.3 MGD entering Holdsclaw Creek arm of Lake Norman (7Q10
of 60.0 CFS). The test using these samples resulted in a pass*. Toxicity test information
follows:
Test Type
Test Concentration
Test Result
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia pass/fail
12 % sample
Pass*
100%
24.3 neonates
100%
26.8 neonates
6.50 SU
174 micromhos/cm
<0.030 mg/1
6.63 SU
181 micromhos/cm
<0.030 mg/I
* The test was invalidated due to control performance not meeting QC criteria (CV > 40%).
Although the test results are not used for compliance judgement, these samples indicate that the
effluent would not be predicted to have water quality impacts on the receiving stream