CAMA Annual Appendix A

2018 CAMA Annual Interim Monitoring Report April 30, 2019
Duke Energy Carolinas, LLC - Marshall Steam Station SynTerra
APPENDIX A
CORRESPONDENCE WITH NCDEQ

ROY COOPER
Governor
MICHAEL S. REGAN
Secretaq
S. JAY ZIMMERMAN
Director
May 1, 2017
Paul Draovitch
Senior Vice President
Environmental, Health & Safety
Duke Energy
526 South Church Street
Mail Code EC3XP
Charlotte, North Carolina 28202
Subject: Response to the February 2, 2017 Letter from Duke Energy
Revised Interim Monitoring Plans for 14 Duke Energy Facilities
Dear Mr. Draovitch:
The North Carolina Department of Environmental Quality (DEQ) has received and reviewed your
February 2, 2017 letter that was in response to our letters dated December 21, 2016 and January
11, 2017 regarding facility Interim Monitoring Plans.
DEQ has considered Duke Energy's comments and is providing the attached revised Interim
Monitoring Plans for the respective facilities. Due to ongoing internal discussions regarding
DEQ's position on surface water sampling, the attached plans only contain references to
groundwater monitoring locations. Once a final internal position has been determined, DEQ may
elect to provide Duke Energy with surface sampling locations to incorporate into the revised
Interim Action Plans. For clarification, we have also provided the minimum expected groundwater
sampling analyte list.
The attached revised facility Interim Monitoring Plans shall be conducted on a quarterly basis
commencing the third quarter of calendar year 2017 pursuant to 15A NCAC 02L .0 110, until
Corrective Action Plans are accepted for the individual facilities or as directed otherwise by DEQ.
The quarterly sampling events will be conducted in conjunction with planned compliance
monitoring sampling events for three quarters during the calendar year, supplemented with an
additional sampling event conducted at each facility in order to provide four rounds of monitoring
data to evaluate seasonal fluctuations during a year -long timeframe. If sampling an individual
groundwater location is problematic, please call the Regional Office that manages the facility to
discuss issues. Any changes to interim monitoring network and sampling requirements must be
discussed with the respective Regional Offices and coordinated by official correspondence from
the DEQ Central Office.
Document the results of the four quarters of sampling and analysis during the calendar year as an
annual interim monitoring plan report for each subject coal ash facility submitted by April 3 01h of
State of North Carolina I Environmental Quality I Division of Water Resources
Water Quality Regional Operations Section
1636 Mail Service Center I Raleigh, North Carolina 27699-1636
919-707-9129
- - - - - - - - - - - - - - - - - - - - - - - - - - -

the following year. The respective annual monitoring reports shall include figures, tables, cross -
sections, maps, and time -series plots in a manner that provides an integrated, comprehensive
interpretation of site conditions and plume status. Reports submitted in a data summary format
will not be approved as an acceptable documentation of the monitoring program.
In order to optimize the groundwater monitoring at each facility, DEQ will be removing the
groundwater monitoring condition from the NPDES permits as they are reissued. Duke Energy
shall continue to monitor the compliance wells separately under the individual NPDES permits
until the NPDES permits are reissued with no groundwater monitoring condition. At that time,
the compliance wells shall continue to be monitored per the attached revised interim monitoring
plans under the authority of 15A NCAC 02L .0110.
The DEQ is open to consider further optimization of the interim monitoring plan program
following a qualitative and quantitative review of site -specific data. A thorough analysis of spatial
and temporal trends related to contaminant distribution that include determination of background
conditions and identification of areas impacted by coal ash residuals must be provided as a decision
framework to support improvements to long-term monitoring programs.
If you have any questions, please feel free to contact Steve Lanter at [phone].
Sincerely,
S. Jay i erman, P.G., Director
Division of Water Resources
Attachments: Revised Interim Monitoring Plans for the 14 coal ash facilities
cc: WQROS Regional Offices
WQROS Central File Copy

Revised Allen Steam Station Interim Monitoring Plan — Groundwater Only
Sample for
Wells to be Sampled
Radionuclides
Regional Office Notes
M
AB-1 OD
AB-1 OS
AB -I ID
x
AB-12D
AB-12S
Recommend redevelopment due to elevated
turbidity.
AB-13D
x
Radionuclide sample requested by MRO
AB-13S
x
Radionuclide sample requested by MRO
AB-14BR
AB-14D
Recommend redevelopment due to elevated
turbidity.
AB-IR
AB-2
AB-20D
AB-20S
Recently installed and should be added to IGWMP -
Based on review of analytical (submitted on
2/20/2017), water quality at AB-2 I BRL is
AB-21BRL
x
acceptable and this location appears to vertically
delineated (pending background for Cr6+, V)
Radionuclide sample requested by MRO
Based on review of analytical (submitted on
2/20/2017), AB-21D has water quality issues (i.e.,
grout contamination). Since this well is located
along a major flow transect beneath the basin this
AB-21D
x
well should be reinstalled to more accurate reflect
site conditions beneath the basin in the deep flow
layer.
Radionuclide sample requested by MRO
AB -21 S
x
Radionuclide sample requested by MRO
AB-21 SL
x
Radionuclide sample requested by MRO
Recently installed and should be added to IGWMP -
Recommend redevelopment due to water quality
AB-22BR
issues. Also, due to observed concentrations of
Boron a lower bedrock well is warranted for vertical
delineation at this location.
AB-22D
AB-22S
Recommend redevelopment due to elevated
turbidity.
Allen Steam Station Page 1 of 9 May 1, 2017

Location not delineated horizontally or vertically.
GWA-23D located upgradient, has water quality
issues and therefore does not provide valid
analytical for determination of horizontal
delineation. Also, this location needs vertical
AB-23BRU
delineation due to Arsenic exceedances observed in
the shallow well thus warranting reinstallation.
Based on review of analytical (submitted on
2/20/2017) AB-23BRU continues to have water
quality issues (i.e., grout contamination) and should
be reinstalled.
AB-23S
Recommend monitoring pH — historically observed
fluctuating.
Recently installed and should be added to IGWMP -
Based on review of analytical (submitted on .
AB-24BR
2/20/2017), water quality at AB-24BR is acceptable
and location appears to be vertically delineated
(pending background for Mn, V)
Based on review of analytical (submitted
2/20/2017), AB-24D has water quality issues (i.e.,
AB-24D
grout contamination). This well is located along a
major flow transect beneath the basin and should be
reinstalled to more accurately represent
groundwater quality at this location.
AB-24S
AB-24SL
Recommend monitoring pH — historically observed
fluctuating.
GWA-3BR has consistently had pH >10 since
installation and therefore is not representative of
actual site conditions. Because of the above
mentioned issues as well as purposes of modeling
(geochem. and fate and transport), it is
recommended that AB-25BR be reinstalled.
Based on review of analytical (submitted on
2/20/2017) AB-24BR (pending background
AB-25BR
X
determination for Mn and V) provides delineation
to the west of AB-25 BR; but GWA-3BR continues
to have water quality issues and at this time does
not provide delineation to the east toward the river.
GWA-3BR should be reinstalled to delineate
exceedances observed at AB-25BR. Once AB-
25BR is reinstalled this location will be reevaluated
to determine if additional vertical delineation is
warranted.
Radionuclide sample requested by MRO
Allen Steam Station Page 2 of 9 May 1, 2017

GWA-3BR has consistently had pH >10 since
installation and therefore is not representative of
actual site conditions. Because of the above
mentioned issues as well as purposes of modeling
(geochem. and fate and transport), it is
AB-25BRU
X
recormuended that AB-25BRU be reinstalled.
Based on review of analytical (submitted on
2/20/2017), AB-25BRU continues to have water
quality issues and should be reinstalled.
Radionuclide sample requested by MRO
AB-25S
X
Radionuclide sample requested by MRO
AB-25SL
X
Radionuclide sample requested by MRO
AB-26S
Recently installed and should be added to IGWMP
— Based on review of analytical (submitted on
AB-27BR
2/20/2017), elevated concentration of total
chromium was observed thus warranting installation
of a lower bedrock well for vertical delineation.
AB-27D
Recommend redevelopment due to elevated
turbidity.
AB-27S
Due to water quality issues at this location,
AB-28D
discontinue sampling. AB-30D is in close
proximity and is representative of site conditions.
AB-28S
AB-29D
AB-29S
Due to water quality issues at this location,
AB-29SL
discontinue sampling. AB-29S does not have water
quality issues and is representative of site
conditions.
AB-2D
AB-30D
AB-30S
Recommend redevelopment due to elevated
turbidity.
AB-31 S
AB-32D
AB-32S
pH has been observed fluctuating and has had
turbidity issues. Recommend redevelopment and
AB-33D
X
reevaluation during next sampling event to
determine path forward.
Radionuclide sample requested by MRO
AB-33S
X
Radionuclide sample requested by MRO
Allen Steam Station Page 3 of 9 May 1, 2017

AB-34D
AB-34S
Based on review of analytical (submitted on
2/20/2017), water quality at AB-35BR is acceptable
and location appears to be vertically delineated
AB-35BR
X
(pending background for Mn and V). Reinstallation
is not warranted at this time.
Radionuclide sample requested by MRO
AB-35D has consistently had pH >/= 10 since
installation and therefore is not representative of
actual site conditions. Because of the above
mentioned issues as well as purposes of modeling
(geochem. and fate and transport), it is
recommended that AB-35D be reinstalled since it is
AB-35D
X
located along a major flow transect.
Based on review of analytical (submitted on
2/20/2017), AB-35D continues to have water
quality issues and should be reinstalled.
Radionuclide sample requested by MRO
AB-35S
X
Radionuclide sample requested by MRO
AB-36D
Monitor pH
AB-36S
AB-37D
AB-37S
Recently installed and should be added to IGWMP -
Based on review of analytical (submitted on
AB-38BR
2/20/2017), water quality at AB-38BR is acceptable
and location appears to be vertically delineated
(pending background for Co, Mn, and V).
AB-38D
AB-38S
AB-39D
AB-39S
AB-4BR
X
AB-4D
X
AB-4S
X
AB-5
AB-6A
X
AB-6R
X
AB-9D
X
AB-9S
X
BG-1D
X
BG-ID has water quality issues and warrants
reinstallation. Since this well is not viable sample
Allen Steam Station Page 4 of 9 May 1, 2017

location at the present GWA-26S/D should remain
in the sampling program until BG-ID is reinstalled
and deemed representative of background
conditions at the site.
Based on review of analytical (submitted on
2/20/2017), BG-1D continues to have water quality
issues and should be reinstalled. GWA-26S/D
should remain in the IGWMP.
Radionuclide sample requested by MRO
BG-1 S
X
Radionuclide sample requested by MRO
Slated for reinstallation, but does not appear to have
BG-2BR
X
been replaced based on review of analytical
(submitted on 2/20/2017).
BG-2D
X
BG-2S
X
BG-3D
BG-3S
BG-4BR
BG-41)
Recommend redevelopment due to elevated
turbidity. Monitor pH.
BG-4S
Slated for reinstallation, but does not appear to have
GWA-14D
been replaced based on review of analytical
(submitted on 2/20/2017).
GWA-14S
GWA-15D
GWA-15S
GWA-16D
GWA-16S
GWA-17D
X
Radionuclide sample requested by MRO
GWA-17S
X
Radionuclide sample requested by MRO
Due to the observed upward trend of conductivity at
the AB- 1R location and uncertainty in regard to
what is effecting water quality at this location,
GWA-18S/D should remain in the sampling
program to continue to assess potential impact from
the basin. Also, it is located along a major flow
GWA-18D
transect so for purposes of modeling (geochem. and
fate and transport) it should continue to be sampled.
Based on review of analytical (submitted on
2/20/2017), GWA-18D has water quality issues (pH
9.4 and has been observed trending upward since
installation) and reinstallation is recommended.
Allen Steam Station Page 5 of 9 . May 1, 2017

Due to the observed upward trend of conductivity at
the AB-lR location and uncertainty in regard to
what is effecting water quality at this location
GWA-18S
GWA-18S/D should remain in the sampling
program to continue to assess potential impact from
the basin and it is located along a major flow
transect so for purposes of modeling (geochem. and
fate and transport) it should continue to be sampled.
GWA-19S/D should remain in the sampling
program as 273 (South Point Rd) being a
topographic divide is in question in regards to the
DBR flow layers. This location is also located
along a major flow transect so for purposes of
GWA-19D
modeling (geochem. and fate and transport) it
should continue to be sampled.
Based on review of analytical (submitted on
2/20/2017), GWA-19D has water quality issues (pH
10.3 has been observed trending upward since
installation) and reinstallation is recommended.
GWA-19S/D should remain in the sampling
program as 273 (South Point Rd) being a
topographic divide is in question in regards to the
GWA-19S
DBR flow layers. This location is also located
along a major flow transect so for purposes of
modeling (geochem. and fate and transport) it
should continue to be sampled.
GWA-1BR
X
GWA-lD
X
GWA-1 S
X
Recommend redevelopment due to elevated pH
GWA-21BR
X
(9.5) and then reevaluate for determination of
replacement.
Slated for reinstallation, but does not appear to have
GWA-21D
X
been replaced based on review of analytical
(submitted on 2/20/2017).
GWA-21 S
X
GWA-22D
GWA-22S
Recommend redevelopment due to elevated
turbidity.
Due to proximity of WSWs, GWA-23D should be
reinstalled to monitor deep flow layer for potential
influence from the basin.
GWA-23D
Based on review of analytical (submitted on
2/20/2017), GWA-35D continues to have water
quality issues and should be reinstalled.
Allen Steam Station Page 6 of 9 May 1, 2017

GWA-23S
Based on review of analytical (submitted on
2/20/2017), GWA-24BR continues to have water
quality issues and should be reinstalled as
GWA-24BR
previously reconnnended. This location is in close
proximity to WSWs located west of the basin and
provides invaluable data. This well should be
reinstalled.
Based on review of analytical (submitted on
GWA-24D
2/20/2017), water quality at GWA-24D is
acceptable and location appears to be vertically
delineated (pending background for V, Cr6+).
Based on review of analytical (submitted on
2/20/2017), GWA-24S still has not been sampled to
GWA-24S
date due to insufficient water volume. This location
is in close proximity to WSWs located west of the
basin and provides invaluable data. This well
should be reinstalled.
BG-ID has water quality issues and warrants
reinstallation. Since this well is not viable sample
location at the present GWA-26S/D should remain
in the sampling program until BG-1D is reinstalled
and deemed representative of background
GWA-26D
conditions at the site.
Based on review of analytical (submitted on
2/20/2017), GWA-26D should continue to be
included in the IGWMP. Note: Recoimnend
monitoring pH (observed fluctuating above
standard) — may be beneficial to redevelop well.
BG-ID has water quality issues and warrants
reinstallation. Since this well is not viable sample
location at the present GWA-26S/D should remain
in the sampling program until BG-1 D is reinstalled
GWA-26S
and deemed representative of background
conditions at the site.
Based on review of analytical (submitted on
2/20/2017), GWA-26S should continue to be
included in the IGWMP.
GWA-2D
X
GWA-2S
X
GWA-3BR has consistently had pH >10 since
installation and therefore is not representative of
GWA-3BR
X
actual site conditions (located along major flow
transect).
Based on review of analytical (submitted on
Allen Steam Station Page 7 of 9 May 1, 2017

2/20/2017), GWA-3BR should be reinstalled for
delineation of exceedances observed at AB-25BR.
GWA-31)
X
Recommend redevelopment due to elevated
turbidity and fluctuating pH.
GWA-3S
X
Recently installed and should be added to IGWMP -
Based on review of analytical (submitted on
GWA-4BR
X
2/20/2017) water quality at GWA-4BR is
acceptable and location appears to be vertically
delineated (pending background for Mn, V).
GWA-4D
X
GWA-4S
X
Slated for reinstallation, but does not appear to have
GWA-5BR
X
been replaced based on review of analytical
(submitted on 2/20/2017).
GWA-5D
X
GWA-5S
X
Historically, GWA-6BR has not exhibited water
quality issues (elevated pH), however, based on
GWA-6BR
X
review of analytical (submitted on 2/20/2017), this
location has pH >12. Recommend reevaluation
during next sampling event for determination of
path forward.
GWA-6DA
X
GWA-6S
X
GWA-7D
X
GWA-7S
X
GWA-8D
GWA-8S
Recommend redevelopment due to elevated
GWA-91)
X
turbidity.
Radionuclide sample requested by MRO
GWA-9S
X
Radionuclide sample requested by MRO
Recently installed and should be added to IGWMP -
Based on review of analytical (submitted on
2/20/2017) water quality at GWA-9BR is
GWA-9BR
X
acceptable and location appears to be vertically
delineated (pending background for Mn, V).
Radionuclide sample requested by MRO
Allen Steam Station Page 8 of 9 May 1, 2017

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
Allen Steam Station Page 9 of 9 May 1, 2017

Revised Asheville Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
for
Radionuclides
Radionuclides
(X)
Regional Office Notes
ABMW-11BR
AMW-03B
X
AMW-1B
X
AMW-2A
AMW-213
water level only
APZ-30
water level only
B-1
water level only
B-1-A
water level only
B-2
water level only
CB-1
X
CB-1BR
water level only
CB-1BRL
water level only
CB-1D
X
CB-8BR
X
CB-81)
water level only
CB-9BR
X
CB-9SL
X
GW-lBR
GW-1D
GW-2
X
GW-3
X
GW-4
X
GW-5
X
MW-3D
X
MW-5BR
MW-5D
MW-8S
X
MW-10
X
MW-11
MW-11D
MW-13BR
MW-13D
MW-14BR
MW-15A
X
MW-15BR
water level only
MW-15D
X
MW-16A
X
Asheville Steam Electric Plant Page 1 of 2 May 1, 2017

MW-16BR
x
MW-17A
x
MW-18BR
x
MW-18BRL
x
MW-18D
x
MW-19BR
water level only
MW-20A
MW-21D
x
MW-22BR
x
MW-22D
x
MW-23BR
MW-23DL
MW-23DU
MW-24S
x
MW-6BR
x
MW-6D
x
MW-6S
x
MW-7BR
water level only
MW-8BR
MW-9B-'R.
x
MW-9D
x
MW-9S
x
P-102
water level only
P-103
PZ-16
Needs to be replaced and added to IMP.
PZ-17D
x
PZ-17S
x
PZ-19
x
PZ-22
x
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
Asheville Steam Electric Plant Page 2 of 2 May 1, 2017

Revised Belews Creek Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
AB-1BR
AB -ID
AB-1S
AB-2D
AB-2S
AB-3D
AB-3S
AB-4BR
Measure pH, if still high, do not sample
AB-4BRD
AB-4D
AB-4S
AB-4SL
Measure pH, if still high, do not sample
AB-5D
AB-5S
AB-5SL
AB-6D
AB-6S
AB-6SL
AB-7D
AB-7S
AB-8D
AB-8S
AB-8SL
AB-9BR
AB-9BRD
AB-9D
AB-9S
BC-23A
BC-28
BCSW-007
BCSW-008
BCSW-018A
BCSW-019
BCW W-002
BG-ID
BG-1 S
X
BG-2BR
Belews Creek Steam Station Page 1 of 4 May 1, 2017

BG-2D
x
BG-2S
x
BG-3D
BG-3S
x
GWA-IOD
If pH still high, do not sample.
GWA-10S
GWA-I I D
GWA-11S
GWA-12BR
GWA-12D
GWA-12S
GWA-16BR
GWA-16D
If pH still high, do not sample.
GWA-16S
GWA-17D
GWA-17S
GWA-18D
GWA-18S
GWA-18SA
GWA-19BR
GWA-19D
GWA-19S
GWA-19SA
GWA-IBR
x
GWA-11)
x
GWA-1S
x
GWA-20BR
GWA-20D
GWA-20S
GWA-20SA
GWA-21D
GWA-21S
GWA-22D
GWA-22S
GWA-23D
GWA-23S
GWA-24BR
GWA-24D
x
GWA-24S
x
GWA-25BR
x
GWA-26BR
x
Belews Creek Steam Station Page 2 of 4 May 1, 2017

GWA-26D
X
GWA-26S
X
GWA-27BR
GWA-27D
GWA-27S
GWA-2D
GWA-2S
GWA-30D
X
GWA-30S
X
GWA-31 D
GWA-31 S
GWA-32D
GWA-32S
GWA-3D
GWA-3 S
GWA-4D
If the well is still there, please sample.
GWA-5BR2
If the well is still there, please sample.
GWA-5D
If the well is still there, please sample.
GWA-5S
If the well is still there, please sample.
GWA-6D
X
GWA-6S
X
GWA-7D
X
GWA-7S
X
GWA-8D
X
GWA-8S
X
GWA-9BR
GWA-9D
GWA-9S
MW-102D
MW-102S
MW-104BR
MW-104D
MW-104S
MW-200BR
X
MW-200D
X
MW-200S
X
MW-201BR
MW-201D
MW-202BR
MW-202D
MW-202S
Belews Creek Steam Station Page 3 of 4 May 1, 2017

MW-203BR
MW-203D
MW-203S
MW-204D
MW-204S
MW-3 X
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
Belews Creek Steam Station . Page 4 of 4 May 1, 2017

Devised Buck Combined Cycle Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sample for
Sampled
Radionuclides
Regional Office Notes
(X)
AB -ID
Recently installed and should be added to IGWMP —
Based on review of analytical (submitted on
AB-1 OBR
2/13/2017), Boron was observed in exceedance of 2L
standard thus warranting installation of a lower
bedrock well for purposes of vertical delineation.
AB-1 OD
AB-10S
Recommend reinstallation for vertical delineation -
pH >10 since well was installed in 2015 (5 sampling
events). This well is also located along and major
flow transect identified at the site so for modeling
purposes this well should be reinstalled.
AB-2BR
X
Based on review of analytical (submitted on
2/13/2017), AB-2BR continues to have water quality
issues and reinstallation is warranted for vertical
delineation at this location (exceedance of Antimony
was observed above IIVIAC).
Radionuclide sample added by MRO.
AB-21)
X
Radionuclide sample added by MRO.
AB-2S
X
Radionuclide sample added by MRO.
AB-2SL
X
Radionuclide sample added by MRO.
AB-3D
AB-3S
Discontinue sampling AB-4BR. Based on review of
AB-4BR
analytical (submitted on 2/13/2017), water quality at
AB-4BRL is acceptable (pending background for V,
Cr6+).
Recently installed and should be added to IGWMP -
Based on review of analytical (submitted on
AB-4BRL
2/13/2017), water quality at AB-4BRL is acceptable
(pending background for V, Cr6+) and this location
appears to be vertically delineated.
AB-4BRU
AB-4S
Due to water quality issue (pH trending upward),
AB-4SL
recommend redevelopment of well and reevaluation
during next sampling event for determination of path
forward.
Buck Combined Cycle Station Page 1 of 6 May 1, 2017

According to historical analytical, this location was
only sampled once in R2 and has not been sampled
since then. I assume this is due to the high pH
indicating grout contamination at this location. Based
AB-5BRU
X
on review of analytical for AB-5S/SL (submitted on
2/13/2017), vertical delineation (As, Cr6+, Fe, Mn, V)
is warranted and this well should be reinstalled.
Radionuclide sample added by MRO.
AB-5S
X
Radionuclide sample added by MRO.
AB-5SL
X
Radionuclide sample added by MRO.
AB-6BRU
AB-7BRU
AB-7S
AB-8BRU
AB-8 S
Based on review of analytical (submitted on
2/13/2017), AB-9BR has water quality issues (i.e.,
grout contamination). Exceedances of TDS, Sb, and
V were observed. This well can be reinstalled and
AB-9BR
X
results reevaluated to determine if additional vertical.
delineation is necessary or a lower bedrock can be
installed and AB-9BR abandoned due to water quality
issues.
Radionuclide sample added by MRO.
Based on review of analytical (submitted on
2/13/2017), AB-9BRU has water quality issues (i.e.,
grout contamination). Exceedances of B, TDS, Sb,
and V were observed. AB-9BRU should be
reinstalled to evaluate contaminant migration from the
AB-9BRU
X
basin toward the Yadkin River. (Note: this location
was documented as AB-9D on the data submittal —
recommend updating applicable tables/figures for
field staff and ensuring the proper ID is shown on the
well tag.)
Radionuclide sample added by MRO.
Recommend redevelopment of this location due to
AB-9S
X
elevated turbidity.
Radionuclide sample added by MRO.
AS -ID
AS-1 S
AS-2D
AS-3D
AS-3 S
Buck Combined Cycle Station Page 2 of 6 May 1, 2017

Slated for reinstallation, but does not appear to have
BG-IBR
been replaced based on review of analytical
(submitted on 2/13/2017).
Slated for reinstallation, but does not appear to have
BG-lD
been replaced based on review of analytical
(submitted on 2/13/2017). Need to evaluate V
exceedance observed (historically elevated).
BG-IS
BG-2D
X
Radionuclide sample added by MRO.
BG-2S
X
Radionuclide sample added by MRO.
Radionuclide sample added by MRO.
BG-3BRU
X
(Note: this location was documented as BG-3D on the
data submittal — recolm-nend updating applicable
tables/figures for field staff and ensuring the proper
ID is shown on the well tag.)
BG-3S
X
Radionuclide sample added by MRO.
pH appears to be fluctuating above standard —
GWA-1013
recommend redevelopment and reevaluation for
upcoming sampling event.
GWA-IOS
GWA-11D
GWA-11S
GWA-12BRU
X
GWA-12S
X
GWA- I 3D has water quality issues, however, MW-
13D is in close proximity to GWA- I 3D and receptors
GWA-13D
and has no water quality issues. MW-1 3D should be
utilized for sampling — discontinue sampling GWA-
13D.
GWA-13SR
Slated for installation, but does not appear to have
been installed based on review of analytical
GWA-14BR
X
(submitted on 2/13/2017).
Radionuclide sample added by MRO.
Due to close proximity of well to WSWs and GW
flow direction observed on maps this well should be
reinstalled to monitor potential migration in the deep
flow layer from ash basin toward receptors.
GWA-14D
X
Based on review of analytical (submitted 2/13/2017),
GWA- I 4D should be reinstalled due to water quality
issues (i.e., grout contamination).
Radionuclide sample added by MRO.
GWA-14S
X
Radionuclide sample added by MRO.
Buck Combined Cycle Station Page 3 of 6 May 1, 2017

Due to elevated concentration of Cobalt, additional
horizontal and vertical delineation is warranted for
GWA-15D
X
this location. A bedrock well should be installed at
this location and a S/D well pair should be installed to
the east of GWA-15S/D.
GWA-15S
X
GWA-16BR
X
Installation pending property access
GWA-16D
X
Installation pending property access
GWA-16S
X
Installation pending property access
GWA-17S
According to historical analytical, this location was
only sampled twice, in R5 and R7, and has not been
sampled since then. I assume this is due to the high
GWA-18D
X
pH indicating grout contamination at this location.
Based on review of analytical (sampled 9/28/2016),
vertical delineation (TDS, Cr(tot), Sb, Fe) is
warranted and this well should be reinstalled.
GWA-18S
X
pH appears to be fluctuating above standard —
GWA-19D
X
recommend redevelopment and reevaluation for
upcoming sampling event.
GWA-19S
X
pH appears to be fluctuating above standard —
GWA-1D
X
recommend redevelopment and reevaluation for
upcoming sampling event.
GWA-1 S
X
GWA-20D
X
GWA-20S
X
GWA-22D
X
Based on review of analytical (submitted on
2/13/2017), GWA-2BR has water quality issues (i.e.,
GWA-2BR
X
grout contamination). This well is located on a major
flow transect and is protective of nearby receptors and
should be reinstalled at this location.
GWA-2BRU
X
GWA-2S
X
GWA-3BR
X
GWA-3BRU
X
GWA-3S
X
GWA-4D
X
GWA-4S
X
GWA-5BRU
X
GWA-5 S
X
Based on review of analytical (submitted on
GWA-6BR
X
2/13/2017), exceedances of SO4 and TDS were
observed at GWA-6BR. Due to the observed
Buck Combined Cycle Station Page 4 of 6 May 1, 2017

exceedances, vertical delineation at this location is
warranted. A lower bedrock well should be installed
at this location to further evaluate concentrations of
SO4 and TDS.
Radionuclide sample added by MRO.
GWA-6BRU
X
GWA-6S
X
GWA-7D
X
GWA-7S
X
GWA-8D
GWA-9BR historically had water quality issues, but
based on review of analytical (submitted on
2/13/2017), water quality at GWA-9BR is acceptable
GWA-9BR
X
and appears to be vertically delineated (pending
background for V).
Radionuclide sample added by MRO.
GWA-9D
X
GWA-9S
X
Compliance monitoring well — was not sampled in R8,
but is sampled 3x/year per NPDES pennit.
Exceedances of SO4 and TDS have been observed in
each sampling event to date. GWA-12S/BRU
MW-1 OD
provides horizontal delineation for this location, but
vertical delineation is warranted. Installation of a
lower bedrock at GWA-6BR as reconunended above
can be utilized to provide vertical delineation at this
location.
Recently installed and should be added to IGWMP -
Based on review of analytical (submitted on
2/13/2017), exceedance of Boron was observed at
MW-1 IBR
X
MW-11BR. Due to the Boron exceedance (leading
edge constituent), vertical delineation at this location
is warranted. A lower bedrock well should be
installed at this location to further evaluate Boron
concentrations.
Compliance monitoring well — historically had water
MW-11D
X
quality issues (turbidity above 10 NTU). Recommend
redevelopment of well in attempt to reduce turbidity.
MW-1 l S
X
MW-12D
MW-12S
MW-13D
MW-ID
MW-IS
MW-2S
Buck Combined Cycle Station Page 5 of 6 May 1, 2017

MW-2D
MW-3D
X
MW-3S
X
MW-4D
MW-4S
MW-5D
MW-5S
MW-6BR
X
pH appears to be trending upward (currently at 9).
Recommend redevelopment and evaluation.
MW-6D
X
MW-6S
X
MW-7D
MW-7S
MW-8BR
X
Recently installed and should be added to IGWMP —
Based on review of analytical (submitted on
2/13/2017), MW-8BR has water quality issues (i.e.,
grout contamination). This location should be
reinstalled to provide accurate data south of Cell 1.
MW-8D
X
MW-8S
X
MW-9D
X
MW-9S
X
Minimum Parameters to be Analyzed
Aluminum
Boron
I Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium.
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
Buck Combined Cycle Station Page 6 of 6 May 1, 2017

Revised Cape Fear Steam Electric Plant Interim MonitorinI4 Plan - Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Dotes
ABMW-1
X
ABMW-lBR
X
ABMW-1 S
X
ABMW-2SL
ABMW-2SU
ABMW-3
X
ABMW-3BR
ABMW-3SR
X
ABMW-4
X
ABMW-4S
X
ABMW-5BR
ABMW-5 S
BGMW-4
X
BGTMW-4
X
CMW-01
X
CMW-02
CMW-03
X
CMW-5R
not yet installed
CMW-06
X
CMW-07
X
CMW-08
X
CTMW-01
X
CTMW-02
CTMW-07
CTMW-08
X
MW-09
MW-09BR
MW-10
X
MW-IOBR
X
MW-1 OBRL
MW-10D
MW-11
X
MW-12
X
MW-12BR
MW-13
MW-15BR
X
MW-15SL
X
Cape Fear Stearn Electric Plant Page 1 of 3 May 1, 2017

MW-15SU
X
MW-16BR
X
MW-16S
X
MW-17BR
MW-17SL
X
MW-17SU
X
MW-18S
X
MW-19S
MW-20BR
MW-20S
MW-21BR
MW-21 SL
X
MW-21 SU
X
MW-22BR
MW-22S
MW-23BR
MW-23D
X
MW-23S
X
MW-24D
X
MW-24S
X
MW-5BRR
MW-6BR
X
MW-9
X
MW-9BR
X
PZ-1
PZ-10
PZ-2
PZ-3D
PZ-3S
PZ-4
PZ-5
X
PZ-6
PZ-7
PZ-8
Cape Fear Steam Electric Plant Page 2 of 3 May 1, 2017

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radian 228
TDS
Zinc
Cape Fear Steam Electric Plant Page 3 of 3 May 1, 2017

Revised James E. Rogers Energy Complex Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
AB-1D
AB-1 S
AB-2D
AB-2S
AB-3BR
AB-3I
AB-3 S
X
AB-3 SL
X
AB-4BR
AB-4D
AB-4S
X
AB-4SL
X
AB-5BR
AB-5BRU
AB-5S
X
AB-6BR
AB-6I7
AB-6S
X
AS -ID
AS-1 SB
AS-2BR
AS-2D
X
AS-2S
X
AS-3BRU
AS-4D
AS-4S
AS-5BRU
AS-5 S
AS-6D
AS-6S
AS-7D
AS-7S
X
BG-ID
X
BG-1 S
X
BG-2D
X
CCPMW-ID
X
CCPMW-1S
X
James E. Rogers Energy Complex Page 1 of 5 May 1, 2017

CLMW-1
X
CLMW-2
CLMW-3D
X
CLMW-3S
X
CLMW-5D
CLMW-5S
CLMW-6
CLP-1
water level only
CLP-2
water level only
GWA-101)
GWA-10S
GWA-1 1BRU
X
GWA-1 1 S
X
GWA-12BRU
GWA-12S
,GWA-13BR
GWA-14BR
GWA-14D
GWA-14S
GWA-113RU
GWA-20BR
X
GWA-20D
X
GWA-20S
X
GWA-21BR
X
GWA-21BRU
X
GWA-21D
GWA-21S
X
GWA-22D
GWA-22S
X
GWA-23D
GWA-24BR
GWA-24D
GWA-24S
GWA-25S
GWA-25D
water level only
GWA-26S
GWA-26D
water level only
GWA-27BR
X
GWA-27D-A
X
GWA-28BR
I
GWA-28BRU
I
James E. Rogers Energy Complex - Page 2 of 5 May 1, 2017

GWA-289
GWA-29D
X
GWA-2BR
X
GWA-2BRU
X
GWA-2S
X
GWA-30BR
GWA-30BRU
water level only
GWA-30S
GWA-31BR-A
GWA-31D
GWA-32D
GWA-32BR
water level only
GWA-33BR
GWA-33D
GWA-33S
GWA-34S
GWA-35D
GWA-35S
GWA-36D
X
GWA-36S
X
GWA-37D
GWA-37S
GWA-38D
GWA-38S
GWA-39S
water level only
GWA-3D
X
GWA-40S
water level only
GWA-42S
water level only
GWA-43D
GWA-43 S
GWA-44BR
GWA-44D
GWA-44S
GWA-45D
GWA-45S
GWA-46D
GWA-47D
GWA-48BR
GWA-48S
GWA-4D
X
GWA-4S
X
James E. Rogers Energy Complex Page 3 of 5 May 1, 2017

GWA-5BRU
GWA-5 S
GWA-6S
GWA-61)
water level only
IB-3D
I3-3S
X
MW-lOD
MW-10S
MW-11D
MW-11 S
X
MW-20D
MW-20DR
MW-21 BR
MW-21 D
MW-22BR
MW-22DR
MW-23D
MW-23DR
MW-23S
MW-24D
X
MW-24DR
X
MW-25DR
MW-2D-A
MW-30D
X
MW-30S
X
MW-32BR
X
MW-32D
X
MW-32S
X
MW-34S
MW-54BRU
MW-36BRU
MW-36S
MW-38BR
X
MW-38D
X
MW-38S
X
MW-40BRU
MW-40S
MW-42D
MW-42S
MW-8D
MW-8S
X
James E. Rogers Energy Complex Page 4 of 5 May 1, 2017

U5-lD
U5-1S
U5-2BR
U5-2D
X
U5-2S-SL-A
X
U5-3D
U5-4D
U5-4S
U5-5BR
U5-5D
X
U5-6D
U5-6S
U5-8BR
U5-8D
U5-8S
Minimum )Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thall irm
Alkalinity
Cadmium
H
Molybdenum
Sodium (total)
TOC
(total)
Clromiuomiumm
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
(total)
Sulfate
TSS
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
James E. Rogers Energy Complex Page 5 of 5 May 1, 2017

Revised Ilan River Combined Cycle Station Interim Monitoring ]Plan — Groundwater Only
Wells to be Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
AB-10D
Measure pH, if still high, not sample.
AB-10S
AB-lOSL
AB-15S
AB-25BR
AB-25D
AB-25 S
AB-30BR
AB-30D
AB-30S
AB-35BR
AB-5D
AB-5S
AS-12S
AS-2D
AS-8BR
AS-8D
BG-ID
X
Measure pH, if still high, not sample.
BG-1 OD
X
BG-10S
X
BG-1 OBR
X
BG-5D
BG-5S
GWA-lOD
GWA-12D
GWA-12S
GWA-14D
GWA-14S
GWA-15D
GWA-16D
GWA-16S
GWA-17D
GWA-18D
X
GWA-20D
GWA-20S
GWA-4D
GWA-4S
Dan River Combined Cycle Station Page 1 of 3 May 1, 2017

GWA-513R
GWA-5BRD
GWA-61)
x
GWA-6S
x
GWA-71)
GWA-7S
GWA-8BR
GWA-81)
GWA-8S
GWA-9D
x
GWA-9S
x
MW-10
x
MW-10D
x
MW-11
x
MW-1 ID
x
MW-12
x
MW-12D
x
MW-21D
MW-21S
MW-22BR
x
MW-22D
x
MW-22S
x
MW-23BR
MW-23D
MW-308BR
MW-310BR
MW-*31 1BR
MW-314BR
MW-315BR
MW-317BR
MW-317BRL
MW-318D
MW-9
MW-91)
OW-308D
OW-310D
Dan River Combined Cycle Station Page 2 of 3 May 1, 2017

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
(total)
Sulfate
TSS
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
Dan River Combined Cycle Station Page 3 of 3 May 1, 2017

Revised. H. F. Lee Energy Complex Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
ABMW-1
ABMW-1 S
X
AMW-11 BC
AMW-11 S
X
AMW-12BC
AMW-12S
AMW-13BC
AMW-13S
AMW-14BC
AMW-14S
AMW-15BC
AMW-15S
AMW-16BC
AMW-17BC
AMW-17S
AMW-18S
X
AMW-6RBC
AMW-9BC
BGMW-10
BGMW-9
BW-1
CCR-100S
X
CMW-10
CMW-5
CMW-6R
CMW-7
CMW-8
CTMW-1
CW-1
CW-2
CW-3
CW-4
DMW-1
DMW-2
DMW-3
IABMW-1
IABMW-1 S
X
H. F. Lee Energy Complex Page 1 of 2 May 1, 2017

IABMW-2S
IABMW-3
IABMW-3S
X
IMW-04BC
IMW-05BC
IMW-lBC
IMW-1 S
X
IMW-2BC
IMW-3BC
IMW-3S
X
IMW-4S
X
IMW-5S
X
LLMW-1
LLMW-1 S
LLMW-2
LLMW-2S
MW-1
MW-2
MW-3
X
SMW-3
SMW-4
SMW-5
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
xavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
H. F. Lee Energy Complex Page 2 of 2 May 1, 2017

Revised Marshall Steam Station Interim MonitorinI4 Plan — Groundwater Only
Sample for
Wells to be Sampled
Radionuclides
Regional Office Notes
M
Recently installed and should be added to
IGWMP — Based on review of analytical
(submitted 2/13/2017), water quality at this
AB-IOBR
location is acceptable and location appears to
vertically delineated (pending background for Fe,
Mn, Cr6+)
AB-10D
AB_10S
AB-10SL
-1 1D
AB-1 I S
Recently installed and should be added to
IGWMP — Based on review of analytical
(submitted 2/13/2017), water quality is
AB-12BR
x
acceptable and location appears to be vertically
delineated.
Radionuclide sample added by MRO.
AB-12D
x
Radionuclide sample added by MRO.
AB_12S
x
Radionuclide sample added by MRO.
AB-12SL
x
Radionuclide sample added by MRO.
AB-13D
AB_13S
AB_14D
AB_14S
AB-15BR
AB-15D
AB_15S
AB-15SL
AB-16D
AB_16S
AB_17D
AB_17S
AB_18D
AB_18S
Based on review of analytical (submitted
2/13/17), exceedance of standard for Boron was
AB-IBR
x
observed (historically has not been above
standard, but concentrations have been trending
upward since installation). Further evaluation of
this exceedances is warranted. Reconunend re -
Marshall Steam Station Page 1 of 6 May 1, 2017

evaluating after next round of sampling and if
Boron continues to exceed standard at this
location a lower bedrock well will be warranted
for vertical delineation.
AB-1D
X
AB-1 S
X
AB-20D
Recommend additional development due to
elevated pH. Will reevaluate next round of
sampling.
AB-20S
AB-21 D
AB-21 S
AB-2D
X
AB-2S
X
AB-3D
AB-3 S
AB-4D
AB-4S
AB-4SL
AB-5BR
X
AB-5D
X
AB-5 S
X
AB-6BR
Based on review of analytical (submitted
2/13/2017), AB-6BR has water quality issues
(i.e., grout contamination) and exceedance of
Barium was observed. This well should be
reinstalled to more accurately represent
groundwater quality at this location.
AB-6D
AB-6S
AB-7D
AB-7S
AB-8D
AB-8S
AB-9BR
AB-9D
AB-9S
AL-1BR
X
Recently installed and should be added to
IGWMP — Based on review of analytical
(submitted 2/13/2017), water quality is
acceptable and this location appears to be
vertically delineated.
Radionuclide sample added by MRO.
AL-1 D
X
Marshall Steam Station Page 2 of 6 May 1, 2017

AL-1 S
X
AL-2BR
Recently installed and should be added to
IGWMP — Based on review of analytical
AL-2BRL
(submitted 2/13/2017), water quality is
acceptable and this location appears to be
vertically delineated.
AL-2D
AL-2S
Recently installed and should be added to
IGWMP — Based on review of analytical
AL-3BR
(submitted 2/13/2017), Boron exceedance was
observed thus warranting vertical delineation at
this location.
AL-3D
AL-3 S
Recently installed and should be added to
IGWMP — Based on review of analytical
AL-4BR
(submitted 2/13/2017), Boron exceedance was
observed thus warranting vertical delineation at
this location.
AL-4D
Slated for reinstallation, but does not appear to
have been replaced based on review of analytical
BG-1BR
X
(submitted on 2/13/2017).
Radionuclide sample added by MRO.
BG-ID
X
Radionuclide sample added by MRO.
BG-1 S
X
Radionuclide sample added by MRO.
BG-2BR
X
Radionuclide sample added by MRO.
Recommend redevelopment due to elevated
BG-2S
X
turbidity.
Radionuclide sample added by MRO.
BG-3BR
X
Radionuclide sample added by MRO.
Observed exceedance of Barium, based on
location of this background well it is highly
unlikely this is attributable to ash handling at the
BG-31)
X
site. Further evaluation of exceedance is
warranted.
Radionuclide sample added by MRO.
Observed exceedances of Barium and Cr(tot),
based on location of this background well it is
BG-3S
X
highly unlikely this is attributable to ash handling
at the site. Further evaluation of these
exceedances is warranted.
Marshall Steam Station Page 3 of 6 May 1, 2017

Recommend redevelopment due to elevated
turbidity.
Radionuclide sample added by MRO.
GWA-1BR
X
Recommend redevelopment due to elevated
turbidity.
GWA-lD
X
GWA-1 S
X
Slated for reinstallation, but does not appear to
GWA-21)
have been replaced based on review of analytical
(submitted on 2/13/2017).
GWA-2S
GWA-3D
GWA-3S
GWA-4D
GWA-4S
GWA-5D
GWA-5S
GWA-6D
X
GWA-6S
X
GWA-7D
GWA-7S
GWA-8D
GWA-8S
GWA-9BR
GWA-10D
GWA-10S
GWA-11BR
X
No analytical available, well was not installed
prior to sampling event.
Based on review of analytical (submitted
2/13/2017), Boron exceedance was observed thus
GWA-11D
X
warranting a bedrock well for vertical delineation
at this location. A bedrock well was previously
recommended for installation and was installed
after this sampling event.
Based on review of analytical (submitted
2/13/2017), Boron, Selenium and sulfate
exceedances were observed thus warranting
horizontal delineation toward the east near the
GWA-11 S
X
cove. A shallow well was previously
recommended to be installed downgradient of
GWA-11 S/D near the cove for purposes of
horizontal delineation. This location will be
difficult to access due to very soft ground due to
the proximity of the lake. A shallow well should
Marshall Steam Station Page 4 of 6 May 1, 2017

be installed for evaluation and determination if
additional assessment is necessary.
GWA-12BR
X
GWA-12D
X
In previous sampling events water quality issues
were not observed, however, during this
sampling event water quality issues have been
observed. Further evaluation of this is warranted
during next round sampling for determination of
path forward.
GWA-12S
X
GWA-13DA
Based on review of analytical (submitted
2/13/2017), water quality remains an issue at this
location. It was recently redrilled and has been
sampled twice (pH>9). Recommend
redevelopment and reevaluation during next
sampling event to determine path forward.
GWA-13S
GWA-14D
No analytical available, well was not installed
prior to sampling event.
GWA-14S
No analytical available, well was not installed
prior to sampling event.
GWA-15S
X
No analytical available, well was not installed
prior to sampling event.
MS-8
MS-10
X
MS-1 I
MS-13
Mw- 1
MW-IOD
X
MW-10S
X
MW-I ID
MW-1 I S
MW-12D
MW-12S
MW-13D
MW-13S
MW-14BR
X
MW-14D
X
MW-14S
X
MW-2
MW-3
MW-4
X
MW-4D
X
MW-5
MW-6D
X
Marshall Steam Station Page 5 of 6 May 1, 2017

MW-6S
X
MW-7
Water level only
MW-7S
X
MW-7D
X
MW-7S
X
MW-8D
X
MW-8S
X
MW-9D
X
MW-9S
X
OB-1 (Dry Ash Basin)
OB-1 (Dry Ash Landfill)
Water level only
Minimum Parameters to be Analyzed
Aluminum
Boron
. Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
Marshall Steam Station Page 6 of 6 May 1, 2017

Revised Mayo Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Wells to be Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
ABMW-1
X
ABMW-2
ABMW-2BR
ABMW-2BRL
ABMW-3
ABMW-3S
ABMW-4
X
ABMW-4BR
ABMW-4D
BG-1
X
BG-2
X
CW-1
CW-1D
CW-2
X
CW-2D
X
CW-3
CW-4
CW-5
CW-6
X
MW-10BR
X
MW-11BR
MW-12D
X
MW-12S
X
MW-13BR
MW-14BR
MW-15BR
water level only
MW-16BR
X
MW-16D
X
MW-16S
MW-2
MW-3
X
MW-3BR
MW-4
MW-5BR
MW-8BR
MW-9BR
water level only
MW-9BRL
Mayo Steam Electric Plant Page 1 of 2 May 1, 2017

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
Mayo Steam Electric Plant Page 2 of 2 May 1, 2017

Revised Riverbend Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
AB-1D
Measure pH, if still >I 0, not sample.
AB-1 S
AB-21)
AB-2S
AB-3BR
AB-31)
AB-3S
AB-41)
AB-4S
AB-51)
AB-5S
AB-5SL
AB-613RU
AB-6S
AB-71)
AB-71
AB-7S
AB-81)
AB-8S
AS-11)
AS-1S
AS-2D
AS-2S
AS-3D
AS-3S
AS-3SA
BG-ID
Measure pH, if still >10, not sample.
BG-1S
BG-2BR
BG-21)
BG-2S
BG-3D
BG-3S
BG-4BR
x
BG-4D
x
BG-4S
x
BG-5BR
Riverbend Steam Station Page 1 of 4 May 1, 2017

BG-5D
C-113RU
Measure pH, if still >I 0, not sample.
C-is
C-21)
C-2S
GWA-10BRU
Measure pH, if still >10, not sample.
GWA-10D
GWA-10S
GWA-11D
GWA-1 1 S
GWA-12D
x
GWA-12S
x
GWA-14D
GWA-14S
GWA-151)
GWA-15S
x
GWA-IBRU
GWA-lD
GWA-lS
GWA-20BR
Measure pH, if still >I 0, not sample.
GWA-20D
Measure pH, if still > 10, not sample.
GWA-20S
GWA-21BR
GWA-21D
GWA-21S
GWA-22BR
GWA-22BR-A
x
GWA-22D
x
GWA-22S
x
GWA-23BR
Measure pH, if still >I 0, not sample.
GWA-23D
Measure pH, if still > 10, not sample.
GWA-23S
GWA-2BR
x
GWA-213RU
x
Measure pH, if still > 10, not sample.
GWA-2S
x
GWA-3BR
GWA-31)
GWA-3S-A
GWA-4BR
Measure pH, if still >I 0, not sample.
GWA-41)
x
GWA-4S
x
Riverbend Steam Station Page 2 of 4 May 1, 2017

GWA-5D
GWA-5S
GWA-6D
X
Measure pH, if still >10, not sample.
GWA-6S
X
GWA-7BR
GWA-7D
GWA-7S
GWA-8D
X .
GWA-8S
X
GWA-9BR
X
GWA-9D
X
GWA-9S
X
MW-10
X
MW-11DR
MW-11 SR
MW-12
MW-13
MW-14
X
MW-15
MW-15BR
MW-15D
Measure pH, if still >10, not sample.
MW-ID
MW-1 S
MW-2D
MW-2S
MW-2S-A
MW-3D
MW-3S
MW-4D
MW-4S
MW-5D
MW-5S
MW-6D
MW-6S
MW-7BR
X
Measure pH, if still >10, not sample.
MW-7D
X
MW-7SR
X
MW-8D
MW-8I
MW-8S
MW-9
X
Riverbend Steam Station Page 3 of 4 May 1, 2017

MW-9BR
X
Measure pH, if still >10, not sample.
MW-9D
X
Measure pH, if still >10, not sample.
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
Riverbend Steam Station Page 4 of 4 May 1, 2017

Revised Roxboro Stearn Electric Plant Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
ABMW-1
X
ABMW-lBR
X
ABMW-2
X
ABMW-2BR
X
ABMW-3
ABMW-3BR
ABMW-3BRL
ABMW-4
X
ABMW-4BR
X
ABMW-5
X
ABMW-5D
X
ABMW-6
ABMW-6BR
ABMW-7
ABMW-7BR
ABMW-7BRL
BG-1
X
BG-lBR
X
BG-1BRL
X
CW-1
CW-2
X
CW-2D
X
CW-3
CW-3D
CW-4
CW-5
X
GMW-10
GMW-11
GMW-6
X
GMW-7
GMW-8
GMW-9
MW-1BR
MW-2BR
MW-3BR
X
MW-4BR
MW-4BRL
water level only
Roxboro Steam Electric Plant Page 1 of 2 May 1, 2017

MW-5BR
X
MW-5D
X
MW-6BR
X
MW-6D
X
MW-7BR
MW-8BR
MW-9BR
X
MW-10BR
X
MW-11BR
X
MW-12BR
MW-13BR
X
MW-14BR
X
MW-15BR
X
MW-15D
X
MW-16BR
X
MW-17BR
X
MW-18BR
X
MW-18D
X
MW-19BRL
X
MW-2
X
MW-20BRL
MW-21 BRL
water level only
MW-22BR
MW-22D
MW-23BR
X
MW-24BR
MW-25BR
MW-26BR
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
PotassiumSulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt .
Manganese
Radium 228
TDS
Zinc
Roxboro Steam Electric Plant Page 2 of 2 May 1, 2017

Revised L. V. Sutton Enemy Complex Interim Monitoring Plan — Groundwater Only
Wells to be
Sample for Radionuclides
(X)
Regional Office NotesSampled
AW-1C
AW-2C
AW-2D
AW-3C
X
AW-4C
X
AW-5C
AW-5D
AW-6D
AW-6E
AW-7D
AW-8C
AW-9C
AW-9D
MW-05C
X
MW-05CD
X
MW-05D
X
MW-05E
MW-12
MW-16D
MW-20
MW-20D
MW-23D
X
MW-23E
X
MW-27C
X
MW-31C
X
MW-36C
X
MW-37B
X
MW-37C
X
MW-37CD
X
MW-37D
X
MW-37E
X
MW-38B
MW-38C
X
MW-38D
X
MW-39B
MW-39C
X
MW-39D
X
MW-40B
L. V. Sutton Energy Complex Page 1 of 2 May 1, 2017

MW-40C
X
MW-40D
X
MW-41E
MW-6C
MW-8
X
SMW-IC
SMW-2C
SMW-3C
SMW-4C
SMW-5C
SMW-6C
SMW-6D
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
L. V. Sutton Energy Complex Page 2 of 2 May 1, 2017

Revised W. H. Weatherspoon Bower Plant Interim Monitoring Plan — Groundwater Only
Wells to be
Sample for Radionuclides
(X)
Regional Office NotesSampled
ABMW-01
AW-01 D
AW-01I
AW-01 S
AW-02D
AW-02S
AW-03D
AW-03I
AW-03S
BW-01
BW-02D
BW-02I
BW-02S
X
BW-03D
X
BW-03I
X
BW-03S
X
CCR-101-BG
CAMA
X
CW-01
CW-02
CW-03
X
MW-01
X
MW-02
X
MW-03
X
MW-04
X
MW-05
X
MW-06
X
MW-07
X
MW-08D
X
MW-08I
X
MW-08S (OW-8)
X
MW-33D
MW-33I
MW-33S
MW-41D
MW-41I
MW-44D
MW-44I
X
W. H. Weatherspoon Power Plant Page 1 of 2 May 1, 2017

MW-44S
MW-44SA
X
MW-49D
MW-49I
X
MW-52
X
MW-53D
MW-53I
MW-54D
MW-55D
X
MW-55I
X
PW-1 (DEP 2)
PZ-01
PZ-02
PZ-03
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium (total)
TOC
(total)
Chromium
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
TSS
(total)
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
TDS
Zinc
W. H. Weatherspoon Power Plant Page 2 of 2 May 1, 2017

/n DUKE
ENERGY,
June 12, 2017
Mr. S. Jay Zimmerman, P.G.
Director, Division of Water Resources
North Carolina Department of Environmental Quality
1611 Mail Service Center
Raleigh, NC 27699-1611
RE: Response to DEQ Letter Dated May 1, 2017
Revised Interim Monitoring Plan for 14 Duke Energy Facilities
Dear Mr. Zimmerman:
Paul Draovitch
Senior Vice President
Environmental, Health & Safety
526 South Church Street
EC3XP
Charlotte, NC 28202
980. 373.0408
Duke Energy is in receipt of the above -referenced letter which identifies by site the groundwater
monitoring wells to be sampled on a quarterly basis beginning in Quarter 3 (July 1). Duke Energy, along
with our consultants, has reviewed the list and offers minor changes. Duke Energy requests a meeting
with Regional Office and Central Office personnel to discuss these changes to the Interim Monitoring
Plan (IMP) such that sampling beginning in July can proceed smoothly.
Duke Energy proposes the following changes by site:
Allen Steam Station
Remove well BG-1D from the IMP and replace with recently installed well BG-1DA*
Remove well BG-2BR from the IMP and replace with recently installed well BG-2BRA*
Remove well GWA-14D from the IMP and replace with recently installed well GWA-14DA
Remove well GWA-21D from the IMP and replace with recently installed well GWA-21DA*
Remove well GWA-3BR from the IMP and replace with recently installed well GWA-3BRA*
Remove well GWA-4BR from the IMP and replace with recently installed well GWA-4BRA*
Remove well GWA-5BR from the IMP and replace with recently installed well GWA-SBRA*
The need for any additional groundwater monitoring wells will be discussed in the near term.
*- Sample for radionuclides also
Asheville Steam Electric Plant
Wells MW-23BR and MW-8BR should be utilized for water level only
Well PZ-16 has turbidity issues and needs to be removed from the IMP. Any discussion regarding this
well replacement will be discussed in the near term.
Add wells GW-1*, CB-2, CB-311, CB-4, CB-46, CB-5, CB-6, CS-7, CB-8 and CB-9* to the IMP.
*- Sample for radionuclides also
Belews Creek Steam Station
Remove well BG-2BR from the IMP and replace with recently installed well BG-2BRA
Remove well GWA-10D from the IMP and replace with recently installed well GWA-10DA
Remove well GWA-16D from the IMP and replace with recently installed well GWA-16DA
Remove well GWA-18S from the IMP. Its replacement well (GWA-18SA) is already part of the IMP

Mr. Jay Zimmerman Letter
June 12, 2017
Remove well GWA-19S from the IMP. Its replacement well (GWA-19SA) is already part of the IMP
Remove well GWA-20S from the IMP. Its replacement well (GWA-20SA) is already part of the IMP
Remove well BC-23A from the IMP. This well is associated with the Craig Road Landfill, not the ash basin
Remove well BC-28 from the IMP. This well is associated with the Craig Road Landfill, not the ash basin
Remove Area of Wetness locations BCSW-007, BCSW-008, BCSW-018A, BCSW-019 and BCWW-002 from
the IMP. The IMP should only include groundwater locations per DEQ letter dated May 1, 2017.
Buck Combined Cycle Station
Remove well AB-9BR from the IMP and replace with recently installed well AB-9BRA*
Remove well AB-913RU from the IMP and replace with recently installed well AB-9BRUA*
Remove well BG-1BR from the IMP and replace with recently installed well BG-1BRA
Remove well BG-1D from the IMP and replace with recently installed well BG-1DA
Remove well GWA-18D from the IMP and replace with recently installed well GWA-18DA*
Remove well GWA-2BR from the IMP and replace with recently installed well GWA-2BRA*
Remove well GWA-9BR from the IMP and replace with recently installed well GWA-9BRA*
Remove well MW-8BR from the IMP and replace with recently installed well MW-8BRA*
Recommend removing well AB-5S from the IMP since two pore water wells exist at the AB-5 cluster.
Duke will continue to sample AB-5SL at this location which is already part of the IMP.
Well AB-813RU is actually well AB-81). Please update the IMP.
Monitoring wells GWA-16S*, GWA-16D*, and GWA-16BR* have been installed off -site at 1085 Leonard
Road. These wells are already part of the IMP.
The need for any additional groundwater monitoring wells will be discussed in the near term.
*- Sample for radionuclides also
CaPe_Fear Steam Electric Plant
Wells MW-9 and MW-9BR are listed twice. In one case they are listed for radionuclide analysis, in the
other case, they are not listed for radionuclide analysis. Duke Energy requests these two wells be
included in the IMP and also sampled for radionuclides with the duplicate listing removed.
Cliffside Steam Station aka James E. Rogers Energy Cam lex
Remove well AB-3SL from the IMP; well will be replaced at a later date by well AB-3SLA*
Remove well MW-11D from the IMP; well will be replaced at a later date by well MW-11DA
Remove well MW-42D from the IMP and replace with recently installed well MW-42DA
Remove well MW-30D from the IMP; well will be replaced at a later date by well MW-30DA*
Add recently installed well BG-1BRA* to the IMP
Add recently installed well AS-6BRA to the IMP
Add well US-41111 and recently installed well U5-4BRA to the IMP (U5-4BR was not abandoned after
replacement)
Add recently installed well GWA-29BRA* to the IMP
Add recently installed well AB-3BRUA to the IMP
Add recently installed well AS-7BRA to the IMP
Remove well AB-3BR from the IMP (obstruction in well)
Remove well GWA-21D from the IMP (this well does not exist)
Remove well GWA-22D from the IMP and add well GWA-22BRU to the IMP (well GWA-22D does not
exist)
Remove well GWA-48S from the IMP (this well does not exist)
Remove wells IB-3S and I13-31) from the IMP as these wells have been abandoned
Remove well U5-3D from the IMP as this well has been abandoned

Mr. Jay Zimmerman Letter
June 12, 2017
Change wells BG-2D, GWA-33BR and GWA-45D in the IMP to water levels only
*- Sample for radionuclides also
Dan River Combined Cycle Station
Remove well BG-1D from the IMP and replace with recently installed well BG-1DA*
Remove well AS-12S from the IMP as it has been abandoned
Remove well GWA-18D from the IMP as it has been abandoned
*- Sample for radionuclides also
H.F. Lee Energy Complex
No comments
Marshall Steam Station
Recommend removing wells AB-10S, AB-12S, AB-15S and AB-4S from the IMP since two pore water wells
exist at these clusters. Duke will continue to sample the'SL' wells at these clusters which are already
part of the IMP.
Remove well AB-6BR from the IMP and replace with recently installed well AB-6BRA
Remove well BG-1BR from the IMP and replace with recently installed well BG-1BRA*
Remove well GWA-2D from the IMP and replace with recently installed well GWA-2DA
The need for any additional groundwater monitoring wells will be discussed in the near term.
*- Sample for radionuclides also
Mayo Steam Electric Plant
No comments
Riverbend Steam Station
Remove well GWA-22BR from the IMP. Its replacement well (GWA-22BR-A*) is already part of the IMP.
Remove well MW-2S from the IMP. Its replacement well (MW-2S-A*) is already part of the IMP.
Well GWA-10D is actually well GWA-10BRU (part of IMP). Please update the IMP.
Well GWA-1D is actually well GWA-IBRU (part of IMP). Please update the IMP.
Monitoring wells AB-3611, AB-31), AB-3S, AB-41), AB-4S, AB-51), AB-5S, AB-5SL, AB-71), AB-71, AB-7S, AS-
1D, AS -IS, AS-21), AS-2S, AS-31), AS-35, and AS-3S-A have been abandoned due to ash basin closure
activities. Please remove these wells from the IMP.
Monitoring wells AB-6BRU and AB-6S are anticipated to be abandoned in June 2017 due to ash basin
closure activities. Please remove these wells from the IMP.
Monitoring well MW-12 was historically abandoned. Please remove this well from the IMP.
Monitoring wells BG-ID, C-1BRU, GWA-20D, GWA-23D, MW-15D, MW-7BR*, MW-9BR*, and MW-9D*
are currently being replaced. Duke Energy will update the regional office once the 'new' well names are
known.
*- Sample for radionuclides also
Roxboro Steam Electric Plant
Add wells BG-1BRL and MW-23BR for water level only
Add wells BG-1BRLR*, MW-11D*, MW-23BRR*, MW-27BR, MW-28BR, MW-28BR, MW-30BR, MW-31BR,
MW-32BR, MW-33BR, GPMW-1S, GPMW-ID, GPMW-IBR, GPMW-2D, GPMW-2BR, GPMW-3D &
GPMW-3BR to the IMP.
*- Sample for radionuclides also
3

Mr. Jay Zimmerman Letter
June 12, 2017
L.V. Sutton Energy Complex
Remove well MW-SE (abandoned) and add replacement well MW-SR-E to the IMP.
Remove well AW-61) (abandoned) and add replacement well AW-6R-D to the IMP.
Remove well AW-6E (abandoned) and add replacement well AW-6R-E to the IMP.
Remove well AW-713 (abandoned) and add replacement well AW-7R-D to the IMP.
Remove well MW-12 (abandoned) and add replacement well MW-12R to the IMP.
Remove well MW-31C (abandoned) and add replacement well MW-31R-C* to the IMP.
Well MW-6C has been abandoned and needs to be removed from the IMP.
Add wells MW-7C, MW-11, MW-19, MW-21C, MW-228, MW-22C, MW-23B, MW-23C, MW-24R-B, MW-
24R-C, MW-2713, MW-288, MW-28C, MW-32C* and MW-33C* to the IMP.
*- Sample for radionuclides also
W. H. Weatherspoon Power Plant
Include well ABMW-1 within the IMP for radionuclides also. Remove wells BW-21 and BW-2D from the
IMP due to turbidity and/or grout contamination. These wells will be used for water level only.
The official well name is CCR-101-13G, rather than CCR-101-BG CAMA (remove the CAMA from the
name). Please update the IMP accordingly.
Again, Duke Energy requests a meeting with Regional Office and Central Office personnel in the near
future to discuss these changes. If you have any questions or need any clarification regarding the
information provided, please contact Ed Sullivan at ed.sullivan duke -ever .com or at 980-373-3719 at
your convenience.
Respe fully su mitte
Paul Draovitch
SVP — Environmental, Health & Safety
CC' Mr. Ed Sullivan — Duke Energy
Ms. Kathy Webb —SynTerra
Mr. Mark Filardi — HDR, Inc.
M

r F
.y
Water Resources
Environmental Quality
December 20, 2017
ROY COOPER
Governor
MiCHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
Paul Draovitch a
Senior Vice President 3
Environmental, Health & Safety
Duke Energy n
526 South Church Street-3Y:.J�..+�f�.
Mail Code EC3XP
Charlotte, North Carolina 28202
Subject: Revised Interim Monitoring Plans for 14 Duke Energy Facilities
1st Quarter 2018
Dear Mr. Draovitch:
The North Carolina Department of Environmental Quality (DEQ) is providing the attached revised
Interim Monitoring Plans (IMPs) for the respective coal ash facilities. Per our agreement, the DEQ
will be providing Duke Energy with updated IMPs quarterly until the individual facility Corrective
Action Plans are approved. Also, per our agreement, Duke Energy will include and begin sampling
any newly installed groundwater assessment wells as part of the facility IMP and the DEQ will
formally include it in the subsequent updated quarterly IMP.
The attached IMPS only contain references to groundwater monitoring locations. Sampling at
surface water locations that were identified as part of the May 1, 2017 communication from DEQ
to Duke Energy regarding revised IlvIPS at the facilities is expected to continue pending finther
notice. DEQ may elect to provide Duke Energy with additional surface sampling locations to
incorporate into the revised IMPs at a future time. For clarification, we have also provided the
minimum expected groundwater sampling analyte list.
The attached revised facility IMPS shall be conducted on a quarterly basis commencing the fourth
quarter of calendar year 2017 pursuant to 15A NCAC 02L .0110, until Corrective Action Plans
are accepted for the individual facilities or as directed otherwise by the DEQ. The quarterly
sampling events will be conducted in conjunction with planned compliance monitoring sampling
events for three quarters during the calendar year, supplemented with an additional sampling event
conducted at each facility in order to provide four rounds of monitoring data to evaluate seasonal
fluctuations during a year -long timeframe. If sampling an individual groundwater location is
problematic, please call the Regional Office that manages the facility to discuss issues. Any
changes to IMPS and sampling requirements must be discussed with the respective Regional
Offices and coordinated by official correspondence from the DEQ Central Office.
Since Duke Energy will submit updated Comprehensive Site Assessments in the near future, the
requirement for an annual monitoring report submitted by April 30th for each respective coal
-: `lNothtng Compares
stale of North Carolina I Environmental Quality I Division of Warr Resources
Water Quality Regional Operations section
1636 Mail service Center I Raleigh, North Carolina 27699-1636
919-707-9129

facility as set forth in the May 1, 2017 letter will be extended to a date in 2018 that will be later
defined.
In order to optimize the groundwater monitoring at each facility, DEQ will be removing the
groundwater monitoring condition from the NPDES permits as they are reissued. Duke Energy
shall continue to monitor the compliance wells separately under the individual NPDES permits
until the NPDES permits are reissued with no groundwater monitoring condition. At that time,
the compliance wells shall continue to be monitored per the attached revised IMPs under the
authority of 15A NCAC 02L .0110.
The DEQ is open to consider further optimization of the IMPS following a qualitative and
quantitative review of site -specific data. A thorough analysis of spatial and temporal trends related
to contaminant distribution that include determination of background conditions and identification
of areas impacted by coal ash residuals must be provided as a decision framework to support
improvements to long-term monitoring programs.
If you have any questions, please feel free to contact Steve Lanter at [phone].
Sincerely,
4SZ?merm�an,P.C.
Division of Water Resources
Attachments: Revised Interim Monitoring Plans for the 14 coal ash facilities
cc: WQROS Regional Offices
WQROS Central File Copy

Revised_ Allen Steam Station Interim Monitoring Plan — Groundwater Onlv
Wells to be Sampled
Sample for
Radionuclides Regional Office Notes
X
AB-101)
—
AB-10S
AB-11D
x
AB-12D
AB-12S
AB-13D
X
AB-! 3S
x
AB-14BR
AB-14D
AB-1 R
AB-2
AB-20D
AB-20S
AB-21 BRL
x
AB-21D
Sample to be analyzed for total boron and sulfate
onl .
AB-21 S
x
AB-21 SL
x
AB-22BRL
AB-22BR
AB-22D
AB-22S
AB-23BRU
Sample to be analyzed for total boron and sulfate
only.
AB-23S
AB-24BR
AB-24D
Sample to be analyzed for total boron and sulfate
only.
AB-24S
r�
AB-24SL
AB-25BR
Sample to be analyzed for total boron and sulfate
onl .
Sample to be analyzed for total boron and sulfate
only.
x 1
x
AB-25BRU
AB-25S
AB-25 SL
AB-26D
AB-26S
AB-27BR
AB-27D
Allen Steam Station Page 1 of 5 December 20, 2017

Sample for
Wells to be Sampled Radionuclides Regional Office Notes
X
AB-27S
AB-28D
AB-28S
AB-29D
--
AB-29S
AB-29SL
AB-2D
_ T
AB-30D
AB-30S
AB-31 S
AB-32D
AB-32S
AB-33D
AB-33 S
AB-34D
AB-34S
_
AB-35BR
X
AB-35D
Sample to be analyzed for total boron and sulfate
only.
AB-35S
AB-36D
AB-36S
AB-37D
AB-37S
AB-38BR
AB-38D
AB-38S
_
AB-39D
AB-39S
AB4BR
X
AB-4D
X
AB-4S
X
AB-5
AB-6A
X
AB-6R
X
AB-91)
X
- ^4-
AB-9S
X
BG-1 DA
_
X
Note: BG-1D has been abandoned and thus
removed from the IMP. BG-1 DA was installed as
replacement well.
j
BG-1 S
X
Allen Steam Station Page 2 of 5 December 20, 2017

Wells to be Sampled
Sample for
Radionuclides
X
--
Regional Office Notes
Note: BG-2BR has been abandoned and thus
removed from the IMP. BG-2BRA was installed as
re lacement well.
BG-2BRA
X
BG-2D
X
BG-2S
X
BG-3D
BG-3S
BG-4BR
BG-4D
BG4S
GWA-14DA
Note: GWA-14D has been abandoned and thus
removed from the IMP. GWA-14DA was installed
as replacement well.
GWA-14S
GWA-15D
GWA-15S
GWA-16D
GWA-16S
GWA-17D
X
GWA-17S
x
GWA-18D
GWA-l8S
GWA-19D
Sample to be analyzed for total boron and sulfate
only.
GWA-19S
GWA-IBR
X
GWA-lD
X
GWA-1 S
X
GWA-21 BR
X
GWA-21 DA
x
Note: GWA-21 D has been abandoned and thus
removed from the IMP. GWA-21 DA was installed
as replacement well.
GWA-21 S
X
GWA-22D
GWA-22S
GWA-23D
Sample to be analyzed for total boron and sulfate
only.
GWA-23S
GWA-24BR
GWA-24D
GWA-24SA
Note: GWA-24S has been abandoned and thus
removed from the IMP. GWA-24SA was installed
as re lacement well.
Allen Steam Station Page 3 of 5 December 20, 2017

- ---- 'I
Wells to be Sampled
Sample for
Radionuclides
X
- -- -- -- - -
Regional Office Notes
GWA-26D
_
GWA-26Sr
GWA-2D
X
GWA-2S
X
GWA-313RA
X
Note: GWA-3BR has been abandoned and thus
removed from the IMP. GWA-3BRA was installed
as replacement well.
GWA-3D
X
Y
GWA-3S
X
GWA4BRA
X
Note: GWA4BR has been abandoned and thus
removed from the IMP. GWA4BRA was installed
as replacement well. _
GWA4D
X
�^
GWA-4S
X
i
GWA-SBRA
X
Note: GWA-5BR has been abandoned and thus
removed from the IMP. GWA-5BRA was installed
as replacement well.
GWA-5D
X
GWA-5S
X
GWA-613RA
_
X
_
Note: GWA-6BR has been abandoned and thus
removed from the IMP. GWA-613RA was installed
as replacement well.
GWA-6DA
x
GWA-6S
X
_
GWA-7D
X
—
GWA-7S
X
GWA-8D
GWA-8S
GWA-9D
GWA-9S
X
GWA-9BR
X
Allen Steam Station Page 4 of 5 December 20, 2017

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
_
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Allen Steam Station Page 5 of 5 December 20, 2017

Revised Asheville Steam Electric Plant interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
ABMW-11BR
AMW-03B
X
AMW-lB
X
AMW-2A
AMW-2B
water level only
APZ-30
water level only
B-L
water level only
B-1-A
water level only
B-2
water level only
CB-1
X
CB-1BR
water level only
CB-1BRL
water level only
CB -ID
X
CB-8BR
X
CB-81)
water level only
CB-9BR
X
CB-9SL
X
GW-1BR
GW-ID
GW-2
X
GW-3
X
GW-4
X
GW-5
X
MW-3D
X
MW-5BR
MW-5D
MW-8S
X
MW-10
X
MW-11
MW-11D
MW-13BR
- --
MW-13D
MW-14BR
MW-15A
X
-
MW-15BR
water level only
MW-15D
X
MW-16A
X
Asheville Steam Electric Plant Page 1 of 3 December 20, 2017

MW-16BR
X _
MW-17A
X
MW-18BR
X
MW-18BRL
X
MW-18D
X
MW-19BR
water level only
MW-20A
_
MW-21D
X��
MW-22BR
X
MW-22D
X
MW-23BR
MW-23DL
{�
M W-23DU
MW-24S
X
MW-6BR
X
MW-6D
X
MW-6S
X
MW-7BR
water level only
MW-8BR
MW-9BR
x
MW-9D
X
MW-9S
X
P-102
water level only
P-103
PZ-16
Needs to be replaced and added to IMP.
PZ-17D
X
PZ-17S
X
PZ-19
X
PZ-22
X
Asheville Steam Electric Plant Page 2 of December 20, 2017

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Asheville Steam Electric Plant Page 3 of 3 December 20, 2017

Revised Belews Creek Steam Station Interim Monitoring -Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
AB-1 BR
AB-1 D
AB-1 S
AB-2D
AB-2S
AB-3D
AB-3 S
AB4BR
Measure pH, if still high, do not sample
AB-4BRD
AB-4D
AB-4S
AB4SL
Measure pH, if still high, do not sample
AB-5D
AB-5S
AB-5SL
AB-6D
AB-6S
AB-6SL
AB-7D
AB-7S
AB-8D
AB-8S
AB-8SL
AB-9BR
AB-9BRD
Measure pH. if pH is still high, do not sample.
AB-9D
AB-9S
BG-1 D
BG-1 S
X
Dry 7/19/17; continue monitoring
BG-2BRA
Replaced BG-2BR
BG-2D
X
BG-2S
X
BG-3D
BG-3S
GWA-10DA
GWA-I0S
GWA-11D
Belews Creek Steam Station Page 1 of 4 December 20, 2017

GWA-11 S
GWA-12BR
GWA-12D
GWA-12S
GWA-16BR
Measure pH. If pH is still high, do not sample.
GWA-16DA
GWA-16S
GWA-17D
GWA-17S
GWA-18D
GWA-18SA
GWA-19BR
GWA-19D
GWA-19SA
GWA-IBR
X
Measure pH. If pH is still high, do not sample.
GWA-1D
X
GWA-1 S
X
GWA-20BR
GWA-20D
GWA-20SA
GWA-21 D
GWA-21 S
GWA-22D
GWA-22S
GWA-23D
GWA-23 S
GWA-24BR
GWA-24D
X
GWA-24S
X
Insufficient Volume 7/21/17; continue monitoring
GWA-25BR
X
GWA-26BR
X
GWA-26D
X
GWA-26S
X
GWA-27BR
GWA-27D
GWA-27S
GWA-2D
GWA-2S
GWA-30D
x
Measure pH. If pH is still high, do not sample.
GWA-30S
x
GWA-31 D
Belews Creek Steam Station Page 2 of 4 December 20, 2017

GWA-31 S
GWA-32D
GWA-32S
GWA-3D
GWA-3S
Insufficient Volume 7/21/17; continue monitoring
GWA-6D
X
GWA-6S
X
GWA-7D
X
GWA-7SA
X
GWA-8D
X
GWA-8S
X
GWA-9BR
GWA-9D
GWA-9S
MW-104BR
Measure pH. If pH is still high, do not sample.
MW-104D
MW-104S
MW-200BR
X
MW-200D
X
MW-200S
X
MW-201 BR
MW-201D
MW-202BR
MW-202D
MW-202S
MW-203BR
MW-203D
MW-203S
MW-204D
M W-204S
MW-3
}i
Belews Creek Steam Station Page 3 of December 20, 2017

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercua
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Ma mesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Belews Creek Steam Station Page 4 of 4 December 20, 2017

Revised Buck Combined Cycle Station Interim Monitoring Plan — Groundwater Only
Wellsto be
Sampled
j Sample for
Radionuclides
_
Regional Office Notes
— --
AB -ID
AB-1 OBR
A13-10BRL
AB-1 OD
AB-IOS
AB-2BR
Sample to be analyzed for total boron and sulfate
only.
AB-2D
X—~
AB-2 S
X
AB-2SL
X
AB-3D
AB-3S
AB-4BRL
AB-4BRU
AB-4S
AB-4SL
AB-SBRU
X
AB-5S
X
AB-5SL
X
AB-6BRU
AB-7BRU
A134S
{
AB-BBRU
AB-8S
AB-9BRA
X
Note: AB-9BR has been abandoned and thus removed
from the IMP. AB-9BRA was installed as
replacement well.
AB-9BRUA
X
Note: AB-9BRU has been abandoned and thus
removed from the 1MP. AB-9BRUA was installed as
replacement well.
AB-9S
X
AS-1 D
AS -IS
AS-2D
AS-3D
AS-3S
{
j BG-1 BRA
Note: BG-1 BR has been abandoned and thus removed
from the IMP. BG-1 BRA was installed as
replacement well.
Buck Combined Cycle Station Page 1 of 4 December 20, 2017

Wells to be
Sampled
Sample for
Radionuclides
X
'
Regional Office Notes
-
J
BG-IS-
BG-21)
X
BG-2S
-- X
BG-3BRU
X
BG-3S
X
GWA-10D
GWA-10S
GWA-11 D
GWA-11 S
GWA-12BRU
���--
GWA-12S
�
GWA-13D
GWA-13SR
GWA-14BR
GWA-14D
Sample to be analyzed for total boron and sulfate
only.
GWA-14S
X
GWA-15BR
X
GWA-15D
X
GWA-155
X
GWA-16BR
X
GWA-16D
X
GWA-16S
X
�� �---�.—.Y�_ ,�.�..__.-.... W,�... .- -�---- ---- • -
GWA-175
�...,�—�.
GWA-18DA
X
Note: GWA-18D has been abandoned and thus
removed from the IMP. GWA-18DA was installed as
replacement well.
GWA-18S
X
GWA-19D
X
..,�.-.-....w__..,-.___._.�........�T�.�v,.-.,,....,�..�_ ..
GWA-19S
X
GWA-1 D
X
GWA-1 S
X
GWA-20D
X
GWA-20S
X
GWA-22D
X
GWA-2BRA
X
Note: GWA-2BR has been abandoned and thus
removed from the IMP. GWA-2BRA was installed as
replacement well.
GWA-2BRU
X
GWA-2S
X
GWA-3BR
X
Buck Combined Cycle Station Page 2 of 4 December 20, 2017

Wells to be Sample for
Sampled -Radionuclides Regional Office Notes
._ . rvt
GWA-3BRU
X
GWA-3S
X
GWA-4D
X
G WA-4S
X
GWA-SBRU
X
GWA-5S
X
GWA-6BR
X
GWA-6BRL
X
GWA-6BRU
X
GWA-6S
X
GWA-7D
X
GWA-7S
X
GWA-SD
Note: GWA-91311 has been abandoned and thus
GWA-9BRA X removed from the IMP. GWA-9BRA was installed as
i. replacement well.
GWA-9D X
GWA-9S
X
MW-1 OD
MW-11 BR
X
MW-1 ] BRL
X
j
MW-11D
X
MW-l1S
X
MW-12D
MW-12S
MW-I3D
MW-ID
MW-1 S
MW-3D
X
MW-3S
X
MW-4D
MW-4S
MW-5D
MW-5S
MW-6BR
X
MW-6D
X
MW-6S
X
MW-7D
MW-7S
Buck Combined Cycle Station Page 3 of 4 December 20, 2017

Wells to be
Sample for
Sampled
Radionuclides Regional Office Notes
Note: MW-8BR has been abandoned and thus
MW-8BRA
X
removed from the IMP. MW-8BRA was installed as
replacement well.
MW-8D
X
MW-8S
X
MW-9D
X
-
M W-9S
X
Minimum Parameters to be Analyzed
Aluminum
Boron
Coe2er
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Buck Combined Cycle Station Page 4 of 4 December 20, 2017

Revised Cape Fear Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
ABMW-1
X
ABMW-1 BR
X
ABMW-1 S
X
ABMW-2SL
ABMW-2SU
ABMW-3
X
ABMW-3BR
ABMW-3SR
X
ABMW-4
X
ABMW-4S
X
ABMW-5BR
ABMW-5S
BGMW-4
X
BGTMW-4
X
CMW-01
X
CMW-02
CMW-03
X
CMW-5R
Installed 7/I9/17
CMW-06
X
CMW-07
X
CMW-08
X
CTMW-01
X
CTMW-02
CTMW-07
CTMW-08
X
MW-10
X
MW-1 OBR
X
MW-l0BRL
MW-lOD
MW-11
X
MW-12
X
MW-12BR
MW-13
MW-15BR
X
MW-15SL
X
MW-15SU
X
MW-16BR
X
Cape Fear Steam Electric Plant Page I of December 20, 2017

MW-16S
X
MW-17BR
MW-17SL
X
X
MW-17SU
MW-18S
X
MW-19S
MW-20BR
MW-20S
MW-21BR
MW-21SL
X
MW-21 SU
x—
--
MW-22BR
MW-22S
MW-23BR
Duke indicated in email sent 9-18-17 this well
location is designated MW-24BR
MW-23D
X
MW-23S
X
MW-24BR
X
MW-24S
X
MW-SBRR
MW-6BR
X
MW-9
X
_
MW-9BR
X
PZ-10
PZ-3 D
PZ-3S
PZ-4
PZ-5
X
PZ-6
PZ-7
PZ-8
--
Cape Fear Steam Electric Plant Page 2 of 3 December 20, 2017

Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium '
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic '
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium i.
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
-Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Cape Fear Steam Electric Plant ' Page 3 of 3 December 20, 2017

Revised James E. Rogers Energy Complex Interim Monitoring Plan - Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
-- -
AB-1 D
AB -IS
-
AB-2D
--
—�
AB-2 S
AB-3BR
AB-3I
AB-3S
X
AB-3SL
X
AB-4BR
AB-4D
AB-4S
X
AB-4SL
X
AB-5BR
AB-5BRU
AB-5S
X
AB-6B R
AB-6D
AB-6S
X
AS -ID
AS-i SB
AS-2BR
AS-2D
X
AS-2S
X
AS-3BRU
AS-4D
AS-4S
AS-513RU
AS-5S
AS-6D
AS-6S
AS-713
- ---�
AS-7S
X
BG-ID
X
BG-IS
X
BG-2D
X
CCPMW-ID
X
CCPMW-1 S
X
-
James E. Rogers Energy Complex Page 1 of 5 December 20, 2017

CLMW-1
X
T
CLMW-2
CLMW-3D
X
CLMW-3S
X
CLMW-SD
CLMW-5S
CLMW-6
CLP-1
water level only
CLP-2
water level only
GWA-1OD
GWA-lOS
GWA-11BRU
X
GWA-11 S
X
GWA-12BRU
GWA-12S
GWA-13BR
GWA-14BR
GWA-14D
GWA-14S
GWA-1BRU
GWA-20BR
X
GWA-20D
X
GWA-20S
X
GWA-2113R X
GWA-21BRU
X
;
GWA-21 D
GWA-21S
X
^�
GWA-22D
GWA-22S
X
GWA-23D
GWA-24BR
�^
GWA-24D
GWA-24S
GWA-25S
GWA-25D
_
water level only
GWA-26S
GWA-26D
~� ~ _
water level only
GWA-27BR
X
GWA-27D-A
X
— T'
GWA-28BR
GWA-28BRU
James E. Rogers Energy Complex Page 2 of 5 December 20, 2017

GWA-28S
GWA-29D
X
GWA-2BR
X
GWA-2BRU
X
GWA-2S
X
GWA-30BR
GWA-30BRU
water level only
GWA-30S
GWA-31 BR -A
GWA-31D
~�
GWA-32D
GWA-32BR
water level only
GWA-33BR
GWA-33D
GWA-33S
GWA-34S
-_
GWA-35D
GWA-35S
GWA-36D
X
GWA-36S
GWA-37D
GWA-37S
GWA-38D
GWA-38S
GWA-39S
water level only
GWA-3D
X
GWA40S
water level only
GWA-42S
water level only
GWA-43D
GWA-43S
_
GWA-44BR
GWA-44D
GWA-44S
G WA-45D
GWA-45S
GWA-46D
GWA-47D
GWA-48BR
GWA48S
GWA-4D
X
GWA-4S
James E. Rogers Energy Complex Page 3 of December 20, 2017

GWA-5BRU
GWA-5S
GWA-6S
GWA-6D
water level only
IB-3D
.v.t
IB-3S
X
MW-10D
MW-10S
MW-11D
MW-11S
X
MW-20D
_
MW-20DR
MW-21BR
MW-21D
MW-22BR
M W-22DR
J
MW-23D
MW-23DR
M W-23 S
M W-24D
X
MW-24DR
MW-25DR
MW-2D-A
_
MW-30D
X
MW-30S
X
MW-32BR
X
MW-32D
X
MW-32S
X
M W-34S
MW-34BRU
MW-36BRU
MW-36S
MW-38BR
X
MW-38D
X
MW-38S
X
MW-40BRU
MW-40S
MW-42D
MW-42S
MW-8D
MW-8S
X
James E. Rogers Energy Complex Page 4 of 5 December 20, 2017

U5-1D
U5-1S
U5-2BR
U5-2D
X
U5-2S-SL-A
X
U5-3D
U5-4D
U5-4S
U5-5BR
U5-5D
X
U5-6D
U5-6S
U5-8BR
U5-8D
U5-8S
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercua
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
James E. Rogers Energy Complex Page 5 of 5 December 20, 2017

Revised Dan River Combined Cvcle Station Interim Monitoring Plan — Ground►vater Only
Wells to be Sampled
Sample for
Radionuclides
X
Regional Office Notes
AB-30BR
AB-30D
AB-30S
AB-35BR
AB-5D
AB-5 S
AS-12S
AS-8BR
AS-8D
BG-IDA
X
Insufficient volume 8/24/17; continue motoring
BG-10D
X
BG-10S
X
BG-1013R
X
BG-5D
BG-5S
GWA-lOD
GWA-12D
GWA-12S
GWA-14D
GWA-14S
GWA-15D
GWA-16D
GWA-16S
GWA-17D
GWA-20D
GWA-20S
GWA-4D
G WA-4S
GWA-5BR
GWA-SBRD
GWA-6D
X
GWA-6S
X
GWA-7D
GWA-7S
GWA-8BR
GWA-8D
GWA-8S
Dan River Combined Cycle Station Page 1 of 2 December 20, 2017

GWA-9D
X
GWA-9S
X
MW-10
X
Dry 8/24/17; continue monitoring
MW-lOD
X
MW-11
X
Dry 8/24/17; continue monitoring
MW-I 1D
X
MW-12
X
MW-12D
X
MW-21D
MW-21S
MW-22BR
X
MW-22D
X
M W-22S
X
MW-23BR
M W-23D
MW-317BR
MW-317BRL
MW-9
Dry 8/24/17; continue monitoring
MW-9D
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Dan River Combined Cycle Station Page 2 of 2 December 20, 2017

Revised H. F. Lee Energv Complex Interim Monitoring Plan - Ground►vater Only
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
ABMW-1
ABMW-1 S
X
AMW-11 BC
AMW-11S
X
AMW-12BC
AMW-12S
_ Y
AMW-13BC
AMW-13S
AMW-14BC
AMW-14S
AMW-15BC
AMW-15S
AMW-16BC
AMW-17BC
AMW-17S
AMW-18S
X
AMW-6RBC
AMW-9BC
AMW-19S
Well pairs AMW-19-23 S/BC were added to the list.
AMW-19BC
AMW-20S
AMW-20BC
AMW-21 S
AMW-21 BC
AMW-22S
AMW-22BC
AMW-23 S
AMW-23BC
BGM W-10
BGMW-9
BW-1
CCR-100S
X
CMW-10
CMW-5
CMW-6R
CMW-7
CMW-8
H. F. Lee Energy Complex Page I of 3 December 20, 2017

CTMW-1
CW-1
_
CW-2
_
CW-3
C W-4
--r --- --.-._ t.---
DMW-I
DMW-2
DMW-3
IABMW-1
� ?C
IABMW-IS
IABMW-2S
IABMW-3
-- - - -- --
IABMW-3S
X------
IM W-04BC
_
IMW-05BC
IMW-IBC
IMW-1 S--
IMW-2BC
IMW-3BC
IMW-3S
X
IMW-4S
X
IMW-5 S
X
LLMW-1
LLMW-1 S
----
-
LLMW-2
LLMW-2S
MW-1
M W-2
MW-3
SMW-3
SMW-4
SMW-5
H. P. Lee Energy Complex Page 2 of 3 December 20, 2017

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
-Magnesium_
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
H. F. Lee Energy Complex rage 3 of 3 December 20, 2017

Revised Marshall Steam Station Interim Monitoring Plan — Groundwater Onlv
Wells to be Sampled
Sample for
Radionuclides
X
Regional Office Notes
AB -I OBR
AB-1013
AB-1 OS
AB-IOSL
AB-11D
AB-11 S
AB-12BR
X
AB-12D
X
AB-12S
X
AB-12SL
X
AB-13D
AB-13S
AB-14D
AB-14S
AB-15BR
AB-15D
AB-15S
AB-15SL
AB-16D
AB-16S
AB-17D
AB-17S
AB-18D
AB-18S
AB-1 BRL
AB-1 BR
X
AB-1D
X
AB -IS
X
AB-20D
AB-20S
AB-21 D
AB-21 S
AB-2D
X
AB-2S
X
AB-3D
AB-3 S
A13 4D
Marshall Steam Station page 1 of 5 December 20, 2017

Wells to be Sampled
Sample for
Radionuclides
X
Regional Office Notes
�......�... _
A134S
AB-4SL
AB-5BR
X
AB-5D
X
AB-5S
X
AB-6BRL
AB-6BRA
Note: AB-6BR has been abandoned and thus
removed from the IMP. A13-613RA was installed
as replacement well.
AB-6D
AB-6S
AB-7D
AB-7S
AB-$D
AB -SS
AB-9BR
AB-9D
AB-9S
AL-1 BR
X
AL-1 D
AL -IS
AL-2B R
AL-2BRLL
AL-2BRL
J
AL-2D
--
AL-2S
AL-3BR
AL-3D
AL-3 S
AB-4BRL
AL-4BR
_
AL4D
BG-1 BRA
x
Note: BG-1 BR has been abandoned and thus
removed from the IMP. BG-1 BRA was installed
as replacement well.
BG-ID
X
BG-1 S
X
BG-2BR
X
BG-25
X
BG-3BR
X
Marshall Steam Station Page 2 of 5 December 20, 2017

Wells to be Sampled
Sample for
Radionuclides , Regional Office Notes
X
X
BG-3D
BG-3 S
X
-
GWA-1 BR
X
GWA-1 D
X
GWA-1 S
X
GWA-2DA
Note: GWA-21) has been abandoned and thus
removed from the IMP. GWA-2DA was
installed as replacement well.
GWA-2S
GWA-3D
GWA-3S
GWA-4D
GWA-4S
GWA-5D
GWA-5S
GWA-6D
X
GWA-6S
X
GWA-7D
GWA-7S
GWA-8D
GWA-8S
GWA-9BR
1
GWA-lOD
GWA-IOS
GWA-11BR
X
_
GWA-11D
X
GWA-11 S
X
GWA-12BR
X
Sample to be analyzed for total boron and sulfate
only. `
GWA-12D
GWA-12S
X
GWA-13DA
Sample to be analyzed for total boron and sulfate
only.
GWA-13S
GWA-14D
GWA-14S
GWA-15S
X
MS-8
T -
MS-10
X
MS-11
Marshall Steam Station Page 3 of 5 December 20, 2017

Wells to be Sampled
Sample for
Radionuclides
X
Regional Office Notes
MS-13
MW-1
MW-lOD
_
x
MW-10S
X
~ry
MW-l1D
u�
MW-11S
MW-12D
MW-12S
_
MW-13D
MW-13S
MW-14BR
X
MW-14D
x
MW-14S
x
MW-2
MW-3
MW-4
X
MW-4D
X
M W-5
M W-6D
X
MW-6S
X
MW-7
Water level only
MW-7D
X
MW-7S
X
MW-81)
X
MW-8S
X
M W-9D
X
—._��--
MW-9S
X
013-1 (Dry Ash Basin)
OB-1 (Dry Ash Landfill)
Water level only
Marshall Steam Station Page 4 of 5 December 20, 2017

Minimum Parameters to be Analyzed
Aluminum T
Boron
Copper
Mercury_Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Marshall Steam Station Page 5 of 5 December 20, 2017

Revised Mavo Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Wells to be Sampled
Sample for
Radionuclides
X
Regional Office Notes
ABMW-1
X
ABMW-2
ABMW-2BR
ABMW-2BRL
ABMW-3
ABMW-3S
ABMW-4
X
ABMW-4BR
ABMW-4D
BG-1
X
BG-2
X
CW-1
CW-1 D
CW-2
X
CW-2D
X
CW-3
CW-4
CW-5
CW-6
X
MW-1013R
X
MW-11BR
water level only
MW-12D
X
MW-12S
X
MW-13BR
MW-14BR
MW-15BR
water level only
MW-16BR
X
MW-16D
X
MW-16S
_
MW-18D
New installation
MW-18BR
New installation
MW-19D
New installation
MW-19BR
New installation
MW-2
MW-3
X
MW-3BR
MW-4
Mayo Steam Electric Plant Pagel of 2 December 20, 2017

MW-5BR
MW-8BR
MW-9BR water level only
MW-9BRL
Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavaient
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
_
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Mayo Steam Electric Plant Page 2 of 2 December 20, 2017

Revised Riverbend Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
AB -ID
Measure pH, if still >10, not sample.
AB -IS
AB-2D
AB-2S
AB -SD
AB-8S
BG-1 DA
BG-IS
BG-2BR
BG-2D
BG-2S
BG-3D
BG-3S
BG-4BR
X
BG-4D
X
BG-4S
X
BG-5BR
BG-5D
C-1BRUA
C-1 S
C-2D
C-2S
GWA-10BRU
Measure pH, if still >10, not sample.
GWA-10S
GWA-11D
GWA-11S
GWA-12D
X
GWA-12S
X
GWA-13D
GWA-13S
GWA-14D
GWA-14S
GWA-15D
GWA-15S
X
GWA-1BRU
GWA-I S
GWA-20BR
Measure pH, if still >10, not sample.
Riverbend Steam Station Page] of 3 December 20, 2017

GWA-20DA
GWA-20S
GWA-21 BR
GWA-21 D
GWA-21 S
GWA-22BR-A
GWA-22D
GWA-22S
x
GWA-23BR
Measure pH, if still >10, not sample.
GWA-23DA
GWA-23S
GWA-2BR
X
GWA-2BRU
X
Measure pH, if still >10, not sample.
GWA-2S
X
GWA-3BR
GWA-3D
GWA-3S-A
GWA4BR
Measure pH, if still >10, not sample.
GWA-4D
GWA-4S
GWA-5D
GWA-5S
GWA-6D
x
Measure pH, if still >10, not sample.
GWA-6S
x
GWA-7BR
GWA-7D
GWA-7S
GWA-8D
X
GWA-8S
X
GWA-9BR
X
GWA-9D
X
GWA-9S
X
MW-l0
X
MW-1 i DR
MW-11 SR
MW-13
MW-14
MW-15
MW-15BR
MW-15DA
MW-1 D
Riverbend Steam Station Page 2 of 3 December 20, 2017

MW-IS
MW-2D
M W-2S-A
MW-3D
MW-3S
MW-4D
MW-4S
MW-5D
MW-5S
MW-6D
MW-6S
MW-7BRA
X
MW-7D
X
MW-7SR
X
MW-8D
MW-81
MW-8S
MW-9
X
MW-9BRA
X
MW-9DA
X
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
--Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Riverbend Steam Station Page 3 of 3 December 20, 2017

Revised Roxboro Steam Electric Plant Interim Monitorin Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
ABMW-1
X,
water Ievel only
ABMW-1BR
X
ABMW-2
X
water level only
ABMW-2BR
X
ABMW-3
ABMW-3BR
ABMW-3BRL
ABMW-4
X
ABMW-4BR
X
ABMW-5
X
ABMW-5D
X
ABMW-6
ABMW-6BR
ABMW-7
water level only
ABMW-7BR
ABMW-7BRL
BG-I
X
BG-1BR
X
BG-1 BRL
water level only
BG-1BRLR
X
New installation
BG-2BR
X
New installation, Duke email 12-5-17 well id
correction to BG-2BR
CW-1
CW-2
X
CW-2D
X
CW-3
CW-3D
CW-4
-
CW-5
X
GMW-10
GMW-1 I
GMW-6
X
GMW-7
GMW-8
GMW-9
MWA BR
MW-2BR
Roxboro Steam Electric Plant Page I of 3 December 20, 20I7

MW-3BR
X
MW-4BR
MW-4BRL
water level only
MW-5BR
X
MW-5D
X
MW-6BR
X
MW-6D
X
MW-7BR
MW-8BR
MW-9BR
X
MW-IOBR
X
MW-1 1BR
X
MW-11 D
X
New installation
MW-12BR
MW-13BR
X
MW-14BR
X
MW-15BR
X
MW-15D
X
MW-16BR
�- X
MW-17BR
X
MW-18BR
X
MW-18D
X
MW-19BRL
X
M W-2
X
MW-20BRL
MW-21BRL
water level only
MW-22BR
MW-22D
MW-23BR
water level only
MW-23BRR
New installation
MW-24BR
-
MW-25BR
MW-26BR
MW-27BR
New installation
MW-28BR
New installation
MW-29BR
New installation
MW-30BR
New installation
MW-3]BR
New installation
MW-32BR
New installation
MW-33BR
New installation
GPMW-1 S
New installation
Roxboro Steam Electric Plant Page 2 of 3 December 20, 2017

GPMW-1 D
New installation
GPMW-lBR
New installation
GPMW-2D
New installation
GPMW-2BR
New installation
GPMW-3D
New installation
GPMW-3BR
New installation
Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Roxboro Steam Electric Plant Page 3 of 3 December 20, 2017

Revised L.V. Sutton Energy Complex Interim Monitoring Plan — Groundwater Onlv
Wells to be Sampled
Sample for
Radionuclides
X
Regional Office Notes
AW-lC
AW-2C
AW-2D
AW-3C
X
AW-4C
X
AW-5C
AW-5D
AW-6R-D
installed in 1st Qtr. 2017 to replace AW-6
AW-6R-E
Installed in 1 st Qtr. 2017 to replace AW-6E
AW-7R-D
Installed in lst Qtr. 2017 to replace AW-713
AW-08C
T�
y
AW-09C
AW-09D
MW-05C
X T w-
MW-05CD
X
MW-05D
X
MW-05R-E
Replaced MW-5E
MW-7C
MW-8
X
MW;SE
X
MW-1 1
MW-12R
Installed in 1st Qtr. 2017 to replace MW-12
MW-16D
MW-19
MW-20
MW-20D
MW-2IC
M W-22B
MW-22C
M W-23B
M W-23C
MW-23D
X T
MW-23E
X
MW-24R-B
MW-24R-C
MW-27B
MW-27C
X
MW-28B
MW-28C
L.V. Sutton Energy Complex Page 1 of 2 December 20, 2017

MW-31 R-C
X
Installed in 1 st Qtr. 2017 to replace MW-31 C
MW-32C
X
MW-33C
X
MW-36C
X
MW-37B
_
X !
MW-37C
X
MW-37CD
X
MW-37D
X
MW-37E
X
MW-38B
MW-38C
X
MW-38D
X
MW-39B
MW-39C
X
MW-39D
X
MW40B
MW40C
MW40D
—
MW-4l E
-
SMW-01C
SMW-02C
SMW-03C
SMW-04C
SMW-5C
SMW-06C
_
w L
SMW-06D
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium_
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
L.V. Sutton Energy Complex Page 2 of 2 December 20, 2017

Revised W. H. Weatherspoon Power Plant Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for Radionuclides
(X)
Regional Office Notes
AW-01 D
AW-Ol I
AW-01 S
AW-02D
AW-02S
AW-03D
AW-03I
AW-03S
BW-01
B W-02D
BW-021
BW-02S
x
BW-03D
X
BW-03I
X
BW-03S
X
BW4D
X
Installed October 2017
BW41
X
Installed October 2017
BW4S
X
Installed October 2017
CCR-101-BG
CAMA
x
CW-01
CW-02
CW-03
X
MW-01
X
M W-02
X
MW-03
X
MW-04
X
M W-05
X
MW-06
X
MW-07
X
MW-33D
MW-33I
MW-33S
MW-41 D
MW41I
MW-52
X
MW-53D
MW-53I
W. H. Weatherspoon Power Plant Page 1 of 2 December 20, 2017

MW-54D
MW-55D X
MW-551 X
PW-1 (DEP 2)
Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mereug
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
W. H. Weatherspoon Power Plant Page 2 of 2 December 20, 2017

1 01-
Water Resources
Environmental Quality
April 6, 2018
Paul Draovitch
Senior Vice President
Environmental, Health & Safety
Duke Energy
526 South Church Street
Mail Code EC3XP
Charlotte, North Carolina 28202
Subject: Revised Interim Monitoring Plans for 14 Duke Energy Facilities
2nd Quarter 2018
Dear Mr. Draovitch:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
The North Carolina Department of Environmental Quality (DEQ) is providing the attached revised
Interim Monitoring Plans (IMPs) for the respective coal ash facilities. Per our agreement, DEQ
will be providing Duke Energy with updated IMPs quarterly until the individual facility Corrective
Action Plans are approved, and Duke Energy will include and begin sampling any newly installed
groundwater assessment wells as part of the facility IMP which DEQ will formally include in the
subsequent IMPs.
The attached IMPs only contain references to groundwater monitoring locations. Sampling at
surface water locations that were identified as part of the May 1, 2017 communication from DEQ
to Duke Energy regarding revised IMPs at the facilities is expected to continue pending further
notice. For clarification, we have also provided the minimum expected groundwater sampling
analyte list.
The attached revised facility IMPs shall be conducted on a quarterly basis commencing the fourth
quarter of calendar year 2017 pursuant to 15A NCAC 02L .0110, until Corrective Action Plans
are approved for the individual facilities or as directed otherwise by DEQ. The quarterly sampling
events will be conducted in conjunction with planned compliance monitoring sampling events for
three quarters during the calendar year, supplemented with an additional sampling event conducted
at each facility in order to provide four rounds of monitoring data to evaluate seasonal fluctuations
during a year -long timeframe. If sampling an individual groundwater location is problematic,
please contact the appropriate Regional Office.
Since Duke Energy is in the process of submitting Comprehensive Site Assessments, the
requirement for an annual monitoring report submitted by April 30th for each respective coal
facility as set forth in the May 1, 2017 letter will be extended to a date in 2018 that will be later
defined.
•'-->'^Nothtng Compares :,__
State of North Carolina I Environmental Quality I Division of Water Resources
Water Quality Regional Operations Section
1636 Mail Service Center I Raleigh, North Carolina 27699-1636
919-707-9129

In order to optimize the groundwater monitoring at each facility, DEQ will be removing the
groundwater monitoring condition from the NPDES permits as they are reissued. Duke Energy
shall continue to monitor the compliance wells separately under the individual NPDES permits
until the NPDES permits are reissued with no groundwater monitoring condition. At that time,
the compliance wells shall continue to be monitored per the attached revised IMPS under the
authority of 15A NCAC 02L .0110.
DEQ is open to consider further optimization of the IMPs following a qualitative and quantitative
review of site -specific data. A thorough analysis of spatial and temporal trends related to
contaminant distribution that include determination of background conditions and identification of
areas impacted by coal. ash residuals must be provided as a decision framework to support
improvements to long-term monitoring programs.
If you have any questions, please feel free to contact the appropriate Regional Office or Steve
Lanter (Central Office) at [phone].
Sincerely,
S. y _ 1 erman, P.G.
Division of Water Resources
Attachments: Revised Interim Monitoring Plans for the 14 coal ash facilities
cc: WQROS Regional Offices
WQROS Central File Copy

Revised Allen Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be Sampled
Sample for
Radionuclides
(A)
Regional Office Notes
AB-10D
AB-10S
AB-11D
X
AB-12D
AB-12S
AB-13D
X
AB-13S
X
AB-14BR
AB-14D
AB-1R
AB-2
AB-20D
AB-20S
AB-21 BRL
X
AB-21D
Sample to be analyzed for total boron and sulfate
only.
AB-21 S
X
AB-21 SL
X
AB-22BRL
Need to discuss additional assessment potentially
needed at this location.
AB-22BR
AB-22D
AB-22S
AB-23BRU
Sample to be analyzed for total boron and sulfate
only.
AB-23S
Sample to be analyzed for total boron and sulfate
onl\ .
AB-24BR
AB-24D
AB-24S
AB-24SL
AB-25BR
Sample to be analyzed for total boron and sulfate
only.
AB-25BRU
Sample to be analyzed for total boron and sulfate
only.
AB-25 S
X
AB-25SL
X
AB-26D
AB-26S
AB-27BR
Allen Steam Station Page 1 of 5 March 29, 2018

Sample for
Wells to be Sampled Radionuclides Regional Office Notes
(X)
AB-27D
AB-27S
AB-28D
AB-28S
AB-29D
AB-29S
AB-29SL
AB-2D
AB-30D
AB-30S
AB-31 S
AB-32D
AB-32S
AB-33D
X
AB-33S
X
AB-34D
AB-34S
AB-35BR
X
AB-35D
Sample to be analyzed for total boron and sulfate
onl .
AB-35S
X
AB-36D
AB-36S
AB-37D
AB-37S
AB-38BR
AB-38D
AB-38S
AB-39D
AB-39S
AB-4BR
X
AB-4D
X
AB-4S
X
AB-5
AB-6A
X
AB-6R
X
AB-9D
X
AB-9S
X
BG-lDA
X
Note: BG-lD has been abandoned thus removed
from the IMP. BG-1DA was installed as
replacement well.
Allen Steam Station Page 2 of 5 March 29, 2018

Sample for
Wells to be Sampled Radionuclides
t Xf_
Regional Office Notes
BG-1 S X
BG-2BRA-2 X
Note: BG-2BR has been abandoned thus removed
from the IMP. BG-2BRA-2 was installed as
replacement well.
BG-2D
X
BG-2S
X
BG-3D
X
BG-3S
X
BG-4BR
X
BG-4D
X
BG-4S
X
GWA-14DA
Note: GWA-14D has been abandoned thus removed
from the IMP. GWA-14DA was installed as
replacement well.
Monitor pH closely.
GWA-14S
GWA-15D
GWA-15S
GWA-16D
GWA-16S
GWA-17D
X
GWA-17S
X
GWA-18D
GWA-18S
GWA-19D
Sample to be analyzed for total boron and sulfate
only.
GWA-19S
GWA-lBR
X
GWA-1D
X
GWA-1 S
X
GWA-21 BR
X
GWA-21DA
X
Note: GWA-21D has been abandoned thus removed
from the IMP. GWA-21DA was installed as
replacement well. _
GWA-21 S
X
GWA-22D
GWA-22S
GWA-23D
Sample to be analyzed for total boron and sulfate
only.
GWA-23S
X
GWA-24BR
Allen Steam Station Page 3 of 5 March 29, 2018

Sample for
Wells to be Sampled
Radionuclides
Regional Office Notes
(X.)
GWA-24D
Note: GWA-24S has been abandoned thus removed
GWA-24SA
from the IMP. GWA-24SA was installed as
replacement well.
GWA-26D
GWA-26S
GWA-2D
X
GWA-2S
X
Note: GWA-3BR has been abandoned thus removed
from the IMP. GWA-3BRA was installed as
replacement well.
GWA-3BRA
X
Replacement well appears to have water quality
issues (elevated pH). Need to discuss potential
replacement.
GWA-3D
X
GWA-3S
X
Note: GWA-4BR has been abandoned thus removed
GWA-4BRA
X
from the IMP. GWA-4BRA was installed as a
replacement well.
GWA-4D
X
GWA-4S
X
Note: GWA-5BR has been abandoned thus removed
from the IMP. GWA-5BRA was installed as
replacement well.
GWA-5BRA
X
Need to discuss additional assessment potentially
needed at this location.
GWA-5D
X
GWA-5S
X
Note: GWA-6BR has been abandoned thus removed
GWA-6BRA
X
from the IMP. GWA-6BRA was installed as
replacement well.
Note: GWA-6D has been abandoned thus removed
GWA-6DA
X
from the IMP. GWA-6DA was installed as
replacement well.
GWA-6S
X
GWA-7D
X
GWA-7S
X
GWA-8D
GWA-8S
GWA-9D
X
GWA-9S
X
GWA-9BR
X
Allen Steam Station Page 4 of 5 March 29, 2018

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Total
Vanadium
Beryllium Cobalt
Manganese Radium 228
Dissolved
Zinc
Solids
Allen Steam Station Page 5 of 5 March 29, 2018

Revised Asheville Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(x
Regional Office Notes
ABMW-11BR
AMW-03B
X
AMW-lB
X
AMW-2A
AMW-2B
water level only
APZ-30
water level only
B-1
water level only
B-1-A
water level only
B-2
water level only
CB-1
X
CB -I BR
water level only
CB-1BRL
water level only
CB-lD
X
water level only
CB-8BR
X
CB-8D
CB-9BR
X
CB-9SL
X
GW-lBR
GW-1D
GW-2
X
GW-3
X
GW-4
X
GW-5
X
MW-3D
X
MW-5BR
MW-5D
MW-8S
X
MW-10
X
MW-11
MW-11D
MW-13BR
MW-13D
MW-14BR
MW-15A
X
MW-15BR
water level only
MW-15D
X
MW-16A
X
Asheville Steam Electric Plant Page 1 of 3 March 29, 2018

MW-16BR
X
MW-17A
X
MW-18BR
X
MW-18BRL
X
MW-18D
X
MW-19BR
water level only
MW-20A
MW-21D
X
MW-22BR
X
MW-22D
X
MW-23BR
MW-23DL
MW-23DU
MW-24S
X
MW-6BR
X
MW-6D
X
MW-6S
X
MW-7BR
water level only
MW-8BR
water level only
MW-9BR
X
MW-9D
X
MW-9S
X
P-102
water level only
P-103
PZ-17D
X
PZ-17S
X
PZ-19
X
PZ-22
X
CB-2
CB-3R
X
CB-4
X
CB-4B
X
CB-5
CB-6
CB-7
CB-8
X
CB-9
X
GW-1
X
CCR-101BR
X
CCR-102D
X
CCR-102S
X
Asheville Steam Electric Plant Page 2 of 3 March 29, 2018

CCR-103BR
CCR-103D
CCR-104D
X
CCR-105BR
CCR-105D
X
EXT-01
X
EXT-02
AS-5BR
Potential pH issues; recommend redevelopment
AS-5BRL
Potential pH issues; recommend redevelopment
MW-15BRL
X
MW-16BRL
X
MW-16D
MW-17BRL
X
MW-20BRL
X
MW-25BR
X
MW-25BRL
X
MW-25 S
MW-26BRL
X
MW-26S
PZ-17BRL
X
Minimum Parameters to be Analyzed
Aluminum
Boron
Co er
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Asheville Steam Electric Plant Page 3 of 3 March 29, 2018

Belews Creek Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
x)
Regional Office Notes
AB-1 BR
AB-1D
AB-1 S
AB-2D
AB-2S
AB-3D
AB-3S
AB-4BR
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
AB-4BRD
-
AB-4D
AB-4S
AB-4SL
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
AB-4SAP
AB-5D
AB-5S
AB-5SL
AB-6D
AB-6S
AB-6SL
AB-7D
AB-7S
AB-8D
AB-8S
AB-8SL
AB-9BR
AB-913RD
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
AB-9D
AB-9S
BG-1 D
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
_
BG-1 S
X
BG-2BRA
BG-2D
X
BG-2S
X
Belews Creek Steam Station Page 1 of 4 March 29, 2018

BG-3D
BG-3S
GWA-10DA
GWA-10S
GWA-11D
GWA-11 S
GWA-12BR
GWA-12D
GWA-12S
GWA-16BR
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses...
GWA-16DA
GWA-16S
GWA-17D
GWA-17S
GWA-18D
GWA-18SA
GWA-19BR
GWA-19D
GWA-19SA
GWA-lBR
X
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
GWA-lD
X
GWA-1 S
X
GWA-20BR
GWA-20D
GWA-20SA
GWA-21D
GWA-21 S
GWA-22D
GWA-22S
GWA-23D
GWA-23S
GWA-24BR
GWA-24D
X
GWA-24S
X
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
GWA-25BR
X
GWA-26BR
X
GWA-26D
X
GWA-26S
X
Belews Creek Steam Station Page 2 of 4 March 29, 2018

GWA-27BR
GWA-27D
GWA-27S
GWA-2D
GWA-2S
GWA-30D
X
Measure all field parameters plus water level; if pH is still high,
do not sample for_lab analyses
GWA-30S
X
GWA-31D
GWA-31 S
GWA-32D
GWA-32S
GWA-3D
GWA-3S
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
GWA-6D
X
GWA-6S
X
GWA-7D
X
GWA-7SA
X
GWA-8D
X
GWA-8S
X
GWA-9BR
GWA-9D
GWA-9S
MW-104BR
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
MW-104D
MW-104S
MW-200BR
X
MW-200D
X
MW-200S
X
MW-201 BR
MW-201D
MW-202BR
MW-202D
MW-202S
MW-203BR
MW-203D
MW-203 S
MW-204D
MW-204S
Belews Creek Steam Station Page 3 of 4 March 29, 2018

MW-3 X
EX-OB-1
EX-OB-2
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Belews Creek Steam Station Page 4 of 4 March 29, 2018

Revised Buck Combined Cr cle Station Interim Monitorina Plan — Groundwater Onh
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
AB -ID
AB-1 OBR
AB-1 OBRL
AB-1 OD
AB-10S
AB-2BR
X
Sample to be analyzed for total boron and sulfate
onlN .
AB-2D
X
AB-2S
X
AB-2SL
X
AB-3D
AB-3 S
AB4BRL
Water quality continues to be an issue (elevated pH).
Need to discuss potential replacement.
AB-4BRU
AB-4S
AB-4SL
AB-5BRU
X
Volume has been insufficient to collect sample since
2015. Continue to monitor water level during each
sampling event and if volume is sufficient for
sampling then collect the sample accordingly.
AB-5 S
X
AB-5SL
X
AB-6BRU
AB-7BRU
AB-7S
AB-8BRUA
Note: AB-8BRU has been abandoned thus removed
from the IMP. AB-8BRUA was installed as
replacement well.
AB-8S
AB-9BRA
X
Note: AB-9BR has been abandoned thus removed
from the IMP. AB-9BRA was installed as
replacement well.
Monitor pH closely.
AB-9BRUA
X
Note: AB-9BRU has been abandoned thus removed
from the IMP. AB-9BRUA was installed as
replacement well.
AB-9S
X
AS-lD
AS -IS
Buck Combined Cycle Station Page 1 of 4 Mach 29, 2018

Wells to be
Sampled
Sample for
Radionuclides
Regional Office Notes
AS-2D
AS-3D
AS-3 S
BG-1BRA
X
Note: BG-1BR has been abandoned thus removed
from the IMP. BG-1BRA was installed as
replacement well.
BG-1 S
X
BG-lDA
X
Note: BG-1D has been abandoned thus removed from
the IMP. BG-lDA was installed as replacement well.
Water quality still an issue (appears to be grout
contaminated). Need to discuss potential
replacement.
BG-2D
X
BG-2S
X
BG-3BRU
X
BG-3 S
X
GWA-1 OD
GWA-10S
GWA-11D
GWA-11 S
GWA-12BRU
X
GWA-12S
X
GWA-13D
GWA-13SR
GWA-14BR
X
GWA-14D
X
Sample to be analyzed for total boron and sulfate
only.
GWA-14S
X
GWA-15BR
X
GWA-15D
X
GWA-15S
X
GWA-16BR
X
GWA-16D
X
GWA-16S
X
GWA-17S
GWA-18DA
X
Note: GWA-1.81) has been abandoned thus removed
from the IMP. GWA-18DA was installed as
replacement well.
Need to discuss possible additional assessment in this
location sulfate/TDS .
GWA-18S
X
Buck Combined Cycle Station Page 2 of 4 Mach 29, 2018

Wells to be
Sampled
Sample for
Radionuclides
Regional Office Notes
GWA-19D
X
GWA-19S
X
GWA-1D
X
GWA-1 S
X
GWA-20D
X
GWA-20S
X
GWA-22D
X
Note: GWA-2BR has been abandoned thus removed
from the IMP. GWA-2BRA was installed as
re placement well.
GWA-2BRA
X
GWA-2BRU
X
GWA-2S
X
GWA-3BR
X
GWA-3BRU
X
GWA-3 S
X
GWA-4D
X
GWA-4S
X
GWA-5BRU
X
GWA-5S
X
GWA-6BR
X
GWA-6BRL
X
GWA-6BRU
X
GWA-6S
X
Volume has been insufficient to collect sample since
2016. Continue to monitor water level during each
sampling event and if volume is sufficient for
samplingsamplLng then collect the sample accordingly.
GWA-7D
X
GWA-7S
X
GWA-8D
GWA-9BRA
X
Note: GWA-9BR has been abandoned thus removed
from the IMP. GWA-9BRA was installed as
replacement well.
GWA-9D
X
GWA-9S
X
MW-10D
MW-11BR
X
MW-11BRL
X
MW-11D
X
MW-1 l S
X
MW-12D
MW-12S
MW-13D
Buck Combined Cycle Station Page 3 of 4 Mach 29, 2018

Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
MW-ID
MW-IS
MW-3D
X
MW-3S
X
MW-4D
MW-4S
MW-5D
MW-5S
MW-6BR
X
MW-6D
X
MW-6S
X
MW-7D
MW-7S
MW-8BRA
X
Note: MW-8BR has been abandoned thus removed
from the IMP. MW-8BRA was installed as
re )lacement well.
MW-8D
X
MW-8S
X
MW-9D
X
MW-9S
X
Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Ma neesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Buck Combined Cycle Station Page 4 of 4 Mach 29, 2018

Revised Cape Fear Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X
Regional Office Notes
ABMW-1
X
ABMW-1BR
X
ABMW-1 S
X
ABMW-2SL
ABMW-2SU
ABMW-3
X
ABMW-3BR
ABMW-3SR
X
ABMW-4
X
ABMW-4S
X
ABMW-5BR
ABMW-5S
BGMW-4
X
BGTMW-4
X
CMW-01
X
CMW-02
CMW-03
X
CMW-5R
CMW-06
X
CMW-07
X
CMW-08
X
CTMW-01
X
CTMW-02
CTMW-07
CTMW-08
X
MW-10
X
MW-lOBR
X
MW-10BRL
MW-10D
MW-11
X
MW-12
X
MW-12BR
MW-13
MW-15BR
X
MW-15SL
X
MW-15SU
X
MW-16BR
X
Cape Fear Steam Electric Plant Page 1 of 3 March 29, 2018

MW-16S
X
MW-17BR
MW-17SL
X
MW-17SU
X
MW-18S
X
MW-19S
MW-20BR
MW-20S
MW-21 BR
MW-21 SL
X
MW-21 SU
X
MW-22BR
MW-22S
MW-23BR
MW-23D
X
MW-23S
X
MW-24BR
X
MW-24S
X
MW-5BRR
MW-6BR
X
MW-9
X
MW-9BR
X
PZ-1
PZ-10
PZ-2
PZ-3D
PZ-3S
PZ-4
PZ-5
X
PZ-6
PZ-7
PZ-8
Cape Fear Steam Electric Plant Page 2 of 3 March 29, 2018

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt Manganese
Radium 228
Dissolved
Zinc
Solids
Cape Fear Steam Electric Plant Page 3 of 3 March 29, 2018

Revised James E. Rogers Ener?,y Complex Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
Redevelop. Sample for boron only.
AB-1BR0
AB-lD
AB-1S
AB-2BRO
Redevelop. Sample for boron only.
AB-2D
AB-2S
AB-3BRUA
AB-3I
AB-3 S
X
AB-3SLA
X
AB-4BR
AB-4D
AB-4S
X
AB-4SL
X
AB-5BR
AB-5BRU
AB-5 S
X
AB-6BR
AB-6D
AB-6S
X
AS-1D
AS-1 SB
AS-2BR
AS-2D
X
AS-2S
X
AS-3BRU
AS-4D
AS-4S
AS-5BR
AS-5BRU
AS-5S
AS-6BRA
AS-6D
AS-6S
X
AS-7BRA
AS-7D
AS-7S
James E. Rogers Energy Complex Page 1 of 6 March 29, 2018

AS-8D
AS-8S
BG 1-BRA
BG-ID
X
BG-1 S
X
BG-21)
Water level only
CCPMW-lD
X
CCPMW-1 S
X
CCPMW-2D
Water level only
CCPMW-2S
Water level only
CCPMW-3D
Water level only
CCPMW-3S
Water level only
CCPMW-4
Water level only
CCPMW-5
Water level only
CCPMW-6D
Water level only
CCPMW-6S
Water level only
CCPTW-lD
Water level only
CCPTW-1 S
Water level only
CCPTW-2
Water level only
CLMW-1
X
CLMW-2
CLMW-3D
X
CLMW-3S
X
CLMW-5D
CLMW-5S
CLMW-6
CLP-1
Water level only
CLP-2
Water level only
CLP-3
Water level only
CLP-4
Water level only
GWA-1 OD
GWA-lOS
GWA-11BRU
X
GWA-11 S
X
GWA-12BRU
GWA-12S
GWA-13BR
GWA-14BR
GWA-14D
GWA-14S
GWA-1BRU
James E. Rogers Energy Complex Page 2 of 6 March 29, 2018

GWA-20BR
X
GWA-20D
X
GWA-20S
X
GWA-21 BR
X
GWA-21 BRU
X
GWA-21 S
X
GWA-22BRU
GWA-22S
X
GWA-23D
GWA-24BR
GWA-24D
GWA-24S
GWA-25S
GWA-25D
Water level only
GWA-26S
GWA-26D
Water level only
GWA-27BR
X
GWA-27D-A
X
GWA-28BR
GWA-28BRU
GWA-28S
GWA-29BRA
GWA-29D
X
GWA-2BR
X
GWA-2BRU
X
GWA-2S
X
GWA-30BR
GWA-30BRU
Water level only
GWA-30S
GWA-31BR-A
GWA-31D
GWA-32D
GWA-32BR
Water level only
GWA-33BR
GWA-33D
GWA-33S
GWA-34S
GWA-35D
GWA-35S
GWA-36D
X
GWA-36S
X
James E. Rogers Energy Complex Page 3 of 6 March 29, 2018

GWA-37D
GWA-37S
GWA-38D
GWA-38S
GWA-39S
Water level only
GWA-3D
X
GWA-40S
Water level only
GWA-42S
Water level only
GWA-43D
GWA-43S
GWA-44BR
GWA-44D
GWA-44S
GWA-45D
Water level only
GWA-45 S
GWA-46D
GWA-47D
GWA-48BR
GWA-4BR
Water level only
GWA-4D
X
GWA-4S
X
GWA-51D
GWA-54D
GWA-54BRO
GWA-54S
GWA-56D
GWA-56S
GWA-5BRU
GWA-5S
GWA-6S
GWA-6D
Water level only
MW-10D
MW-10S
MW-11BRO
Redevelop. Sample for boron only.
MW-11DA
MW-11S
X
MW-20D
MW-20DR
MW-21 BR
MW-21D
MW-22BR
James E. Rogers Energy Complex Page 4 of 6 March 29, 2018

MW-22DR
MW-23D
MW-23DR
MW-23S
MW-24D
X
MW-24DR
X
MW-25DR
MW-2D-A
MW-30D
X
MW-30DA
X
MW-30S
X
MW-32BR
X
MW-32D
X
MW-32S
X
MW-34S
MW-34BRU
MW-36BRU
MW-36S
MW-38BR
X
MW-38D
X
MW-38S
X
MW-40BRU
MW-40S
MW-42DA
MW-42S
MW-8D
MW-8S
X
U5-1D
U54 S
U5-2BR
U5-2D
X
U5-2S-SL-A
X
U5-4BRA
U5-4D
U5-4S
U5-5BR
U5-5D
X
U5-6D
U5-6S
U5-8BR
U5-8D
James E. Rogers Energy Complex Page 5 of 6 March 29, 2018

U5-8S
CCR12-S
CCR-12D
CCR-13D
CCR-15D
CCR-IB-1 S
CCR-IB-ID
CCR-IB-3S
CCR-IB-3D
CCR-U5-4S
Sample 1st Quarter 2018 only
CCR-U5-4D
Sample 1st Quarter 2018 only
CCR-7S
Sample 1st Quarter 2018 only
CCR-7D
Sample 1st Quarter 2018 only
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
James E. Rogers Energy Complex Page 6 of 6 March 29, 2018

Dan River Combined Cycle Station Interim Monitorin Plan — Groundwater Onh
Wells to be Sampled
Sample for
Radionuclides
lX�
Regional Office Notes
AB-30BR
AB-30D
X
AB-30S
BG-1DA
Measure water level if not dry; collect all filed
parameters if possible; if there is some water but not
enough water for all samples, please collect samples
for boron, sulfate, chloride, TDS only.
BG-10D
X
BG-10S
X
BG-10BR
X
BG-5D
BG-5 S
GWA-10D
GWA-12D
GWA-12S
GWA-14D
GWA-14S
GWA-15D
GWA-16D
GWA-16S
GWA-17D
GWA-20D
GWA-20S
GWA-4D
GWA-4S
GWA-5BR
GWA-5BRD
GWA-6D
X
GWA-6S
X
GWA-7D
GWA-7S
GWA-8BR
GWA-8D
GWA-8S
GWA-9D
X
GWA-9S
X
MW-11
X
Measure water level if not dry; collect all filed
parameters ifpossible; if there is some water but not
Dan River Combined Cycle Station Page 1 of 2 March 29, 2018

enough water for all samples, please collect samples
for boron, sulfate, chloride, TDS only.
MW-11D
X
MW-12
X
MW-12D
X
MW-21D
MW-21 S
MW-22BR
X
MW-22D
X
MW-22S
X
MW-23BR
MW-23D
MW-317BR
MW-317BRL
Minimum Parameters to be AnaLyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt Manganese
Radium 228
Dissolved
Zinc
Solids
Dan River Combined Cycle Station Page 2 of 2 March 29, 2018

Revised H. F. Lee Energy- Complex Interim Monitoring; Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
X
Regional Office Notes
ABMW-1
ABMW-1 S
X
AMW-11BC
AMW-11 S
X
AMW-12BC
AMW-12S
AMW-13BC
AMW-13S
AMW-14BC
AMW-14S
AMW-15BC
AMW-15S
AMW-16BC
AMW-17BC
AMW-17S
AMW-18S
X
AMW-6RBC
AMW-9BC
AMW-19S
AMW-19BC
AMW-20S
AMW-20BC
AMW-21 S
AMW-21BC
AMW-22S
AMW-22BC
AMW-23S
AMW-23BC
BGMW-10
BGMW-9
BW-1
CCR-100S
X
CMW-10
CMW-5
CMW-6R
CMW-7
CMW-8
H. F. Lee Energy Complex Pagel of 3 March 29, 2018

CTMW-1
CW-1
CW-2
CW-3
CW-4
DMW-1
DMW-2
DMW-3
IABMW-1
IABMW-1 S
X
IABMW-2S
IABMW-3
IABMW-3S
X
IMW-04BC
IMW-05BC
IMW-lBC
IMW-1 S
X
IMW-2BC
IMW-3BC
IMW-3S
X
IMW-4S
X
IMW-5S
X
LLMW-1
LLMW-1 S
LLMW-2
LLMW-2S
MW-1
MW-2
MW-3
X
SMW-3
SMW-4
SMW-5
H. F. Lee Energy Complex Page 2 of 3 March 29, 2018

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
H. F. Lee Energy Complex Page 3 of 3 March 29, 2018

Revised Marshall Steam Station Interim Monitoring Plan — Groundwater Onlv
Wells to be Sampled
AB-l0BR
Sample for
Radionuclides
Regional Office Notes
AB-10D
AB-10S
AB-10SL
AB-11D
AB-11 S
AB-12BR
X
AB-12D
X
AB-12S
X
AB-12SL
X
AB-13D
AB-13S
AB-14D
AB-14S
AB-15BR
AB-15D
AB-15S
AB-15SL
AB-16D
AB-16S
AB-17D
AB-17S
AB-18D
AB-18S
Need to discuss additional assessment potentially
needed at this location.
AB-1BRL
X
AB-1BR
X
AB-1D
X
AB-1S
X
AB-20D
AB-20S
AB-21 D
AB-21 S
AB-2D
X
AB-2S
X
AB-3D
AB-3S
Marshall Steam Station Page 1 of 5 March 29, 2018

Wells to be Sampled
Sample for
Radionuclides
]C
Regional Office Notes
AB-4D
AB-4S
AB-4SL
AB-5BR
X
AB-5D
X
AB-5 S
X
AB-6BRL
AB-6BRA
Note: AB-6BR has been abandoned and thus
removed from the IMP. AB-6BRA was installed
as replacement well.
AB-6D
AB-6S
AB-7D
AB-7S
AB-8D
AB-8S
AB-9BR
AB-9D
AB-9S
AL-113R
X
Monitor closely, boron concentrations are
trending upward.
AL -ID
X
AL-1 S
X
AL-2BR
AL-2BRL
AL-2BRLL
Need to discuss additional assessment potentially
needed at this location.
AL-2D
AL-2S
AL-3BR
AL-3D
AL-3 S
AL-4BRL
AL-4BR
AL-4D
BG-1BRA
X
Note: BG-1BR has been abandoned and thus
removed from the IMP. BG-1BRA was installed
as re lacement well.
BG-ID
X
BG-1 S
X
BG-2BR
X
Marshall Steam Station Page 2 of 5 March 29, 2018

Wells to be Sampled
Sample for
Radionuclides
X
Regional Office Notes
BG-2S
BG-3BR
X
BG-3D
X
BG-3S
X
GWA-1BR
X
GWA-1D
X
GWA-1 S
X
GWA-2DA
Note: GWA-21) has been abandoned and thus
removed from the IMP. GWA-2DA was
installed as replacement well.
GWA-2S
GWA-3D
GWA-3S
GWA-4D
GWA-4S
GWA-5D
GWA-5S
GWA-6D
X
GWA-6S
X
GWA-7D
GWA-7S
GWA-8D
GWA-8S
GWA-9BR
GWA-10D
GWA-10S
GWA-11BR
X
GWA-11D
X
GWA-11 S
X
GWA-12BR
X
GWA-12D
Sample to be analyzed for total boron and sulfate
only.
GWA-12S
X
GWA-13DA
Sample to be analyzed for total boron and sulfate
onl% .
GWA-13S
GWA-14D
GWA-14S
GWA-15S
X
MS-8
Marshall Steam Station Page 3 of 5 March 29, 2018

Wells to be Sampled
MS-10
MS-11
Sample for
Radionuclides[Xl
X
Regional Office Notes
MS-13
MW-1
MW-10D
X
MW-lOS
X
MW-11D
MW-11 S
MW-12D
MW-12S
MW-13D
MW-13S
MW-14BR
X
MW-14D
X
MW-14S
X
MW-2
MW-3
MW-4
X
MW-4D
X
MW-5
MW-6D
X
MW-6S
X
MW-7
Water level only
MW-7D
X
MW-7S
X
MW-8D
X
MW-8S
X
MW-9D
X
MW-9S
X
OB-1 (Dry Ash Basin)
OB-1 (Dry Ash Landfill)
Water level only
Marshall Steam Station Page 4 of 5 March 29, 2018

Minimum Parameters to be Anal zed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Marshall Steam Station Page 5 of 5 March 29, 2018

Revised Mai o Steam Electric Plant Interim Monitoring- Plan — Groundwater Only
Sample for
Wells to be Sampled Radionuclides
X
Regional Office Notes
ABMW-1
X
_
_
ABMW-2
ABMW-2BR
ABMW-2BRL
ABMW-3
ABMW-3S
ABMW-4
X
ABMW-4BR
ABMW-4D
BG-1
X
BG-2
X
CW-1
CW-lD
CW-2
X
CW-2D
X
CW-3
CW-4
CW-5
CW-6
X
MW-10BR
X
MW-11BR
water level only
MW-12D
X
MW-12S
X
MW-13BR
MW-14BR
MW-15BR
water level only
MW-16BR
X
MW-16D
X
MW-16S
MW-18D
MW-18BR
MW-19D
MW-19BR
MW-2
MW-3
X
MW-3BR
MW-4
Mayo Steam Electric Plant Page 1 of 2 March 29, 2018

MW-5BR
MW-8BR
MW-9BR water level only
MW-9BRL
Minimum Parameters to be Analyzed
Aluminum
Boron
Co er
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
I Manganese
Radium 228
Dissolved
Zinc
Solids
Mayo Steam Electric Plant Page 2 of 2 March 29, 2018

Riverbend Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X1
Regional Office Notes
AB-11)
Measure all field parameters plus water level, if pH
still high, not sample for lab analyses.
AB -IS
AB-2D
AB-2S
AB-8D
AB-8S
BG-lDA
BG-1 S
BG-2BR
BG-2D
BG-2S
BG-3D
BG-3S
BG-4BR
X
BG-4D
X
BG-4S
X
BG-5BR
BG-5D
GWA-10BRU
Field parameters plus water level, if pH still high, not
sample for lab analyses.
GWA-10S
GWA-11D
GWA-11 S
GWA-12D
X
GWA-12S
X
GWA-13D
GWA-13S
GWA-14D
GWA-14S
GWA-15D
GWA-15S
X
GWA-1BRU
GWA-1 S
GWA-20BR
GWA-20DA
GWA-20S
GWA-21BR
Riverbend Steam Station Page 1 of 3 March 29, 2018

GWA-21D
GWA-21 S
GWA-22BR-A
X
GWA-22D
X
GWA-22S
X
GWA-23BR
Field parameters plus water level, if pH still high, not
sample for lab analyses.
GWA-23DA
GWA-23S
GWA-2BR
X
GWA-2BRU
X
GWA-2S
X
GWA-3BR
GWA-3D
GWA-3S-A
GWA-4BR
GWA-4D
X
GWA-4S
X
GWA-5D
GWA-5S
GWA-6D
X
GWA-6S
X
GWA-7BR
GWA-7D
GWA-7S
GWA-8D
X
GWA-8S
X
GWA-9BR
X
GWA-9D
X
GWA-9S
X
MW-10
X
MW-11DR
MW-11 SR
MW-13
MW-14
X
MW-15
MW-15BR
MW-15DA
MW-1D
MW-1 S
MW-2D
MW-2S-A
Riverbend Steam Station Page 2 of 3 March 29, 2018

MW-3D
MW-3S
MW-4D
MW-4S
MW-5D
MW-5S
MW-6D
MW-6S
MW-7BRA
X
MW-7D
X
MW-7SR
X
MW-8D
MW-8I
MW-8S
MW-9
X
MW-9BRA
X
MW-9DA
X
OB-1
Water level only
OB-2
Water level only
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Riverbend Steam Station Page 3 of 3 March 29, 2018

Revised Roxboro Steam Electric Plant Interim Monitorine Plan — Groundwater Only
Wells to be
Sampled
ABMW-1
ABMW-lBR
Sample for
Radionuclides
X -
X
Regional Office Notes
water level
ABMW-2
X
water level only
ABMW-2BR
_ X
ABMW-3
ABMW-3BR
ABMW-3BRL
ABMW-4
X
ABMW-4BR
X
ABMW-5
X
ABMW-5D
X
ABMW-6
ABMW-6BR
ABMW-7
water level only
ABMW-7BR
ABMW-7BRL
BG-1
X
BG-lBR
X
BG-1BRL
water level only
BG-1BRLR
X
BG-2BR
X
CW-1
CW-2
X
CW-2D
X
CW-3
CW-3D
CW-4
CW-5
X
GMW-10
GMW-11
GMW-6
X
GMW-7
GMW-8
GMW-9
MW-1BR
MW-2BR
MW-3BR
X
Roxboro Steam Electric Plant Page 1 of 3 March 29, 2018

MW-4BR
MW-4BRL
water level only
MW-5BR
X
MW-5D
X
MW-6BR
X
MW-6D
X
MW-7BR
MW-8BR
MW-9BR
X
MW-10BR
X
MW-11BR
X
MW-11D
X
MW-12BR
MW-13BR
X
MW-14BR
X
MW-15BR
X
MW-15D
X
MW-16BR
X
MW-17BR
X
MW-18BR
X
MW-18D
X
MW-19BRL
X
MW-2
X
MW-20BRL
MW-21BRL
water level only
MW-22BR
MW-22D
MW-23BR
water level only
MW-23BRR
MW-24BR
MW-25BR
MW-26BR
MW-27BR
MW-28BR
MW-29BR
MW-30BR
MW-31BR
MW-32BR
MW-33BR
GPMW-1 S
GPMW-lD
Roxboro Steam Electric Plant Page 2 of 3 March 29, 2018

GPMW-lBR
GPMW-2D
GPMW-2BR
GPMW-3D
GPMW-3BR
Minimum Parameters to be Analyzed
Aluminum
1 Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Roxboro Steam Electric Plant Page 3 of 3 March 29, 2018

Revised L.V. Sutton Enenry Complex Interim Monitorin Plan — Groundwater Only•
Wells to be Sampled
Sample for
Radionuclides
x
Regional Office Notes
AW-1 C
AW-2C
AW-2D
AW-3C
X
AW-4C
X
AW-5C
AW-5D
AW-6R-D
AW-6R-E
AW-7R-D
AW-08C
AW-09C
AW-09D
MW-05C
X
MW-05CD
X
MW-05D
X
MW-05R-E
MW-7C
MW-8
X
MW-8E
X
MW-11
MW-12R
MW-16D
MW-19
MW-20
MW-20D
MW-21C
MW-22B
MW-22C
MW-23B
MW-23C
MW-23D
X
MW-23E
X
MW-24R-B
MW-24R-C
MW-27B
MW-27C
X
MW-28B
MW-28C
L.V. Sutton Energy Complex Page 1 of 2 March 29, 2018

MW-31R-C
X
MW-32C
X
MW-33C
X
MW-36C
X
MW-37B
X
MW-37C
X
MW-37CD
X
MW-37D
X
MW-37E
X
MW-38B
MW-38C
X
MW-38D
X
MW-39B
MW-39C
X
MW-39D
X
MW-40B
MW-40C
MW-40D
MW-41E
SMW-01 C
SMW-02C
SMW-03C
SMW-04C
SMW-5C
SMW-06C
SMW-06D
Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
L.V. Sutton Energy Complex Page 2 of 2 March 29, 2018

'Revised W. H. Weatherspoon Power Plant Interim Monitoring Plan — Groundwater OnIN
Wells to be
Sampled
Sample for Radionuclides
(g)
Regional Office Notes
AW-01D
AW-01I
AW-01 S
AW-02D
AW-02S
AW-03D
AW-03I
AW-03S
BW-01
BW-02S
X
BW-03D
X
BW-03I
X
BW-03S
X
BW-4D
X
BW-4I
X
BW4S
X
CCR-101-BG
CAMA
X
CW-01
CW-02
CW-03
X
MW-01
X
MW-02
X
MW-03
X
MW-04
X
MW-05
X
MW-06
X
MW-07
X
MW-33D
MW-33I
MW-33S
MW-41D
MW-41I
MW-52
X
MW-53D
MW-53I
MW-54D
MW-55D
X
W. H. Weatherspoon Power Plant Page 1 of 2 March 29, 2018

MW-55I i X
PW-1 (DEP 2)
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
MaLinesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt Manganese
Radium 228
Dissolved
Zinc
Solids
W. H. Weatherspoon Power Plant Page 2 of 2 March 29, 2018

s� ti
Water Resources
Environmental Quality
June 29, 2018
Paul Draovitch
Senior Vice President
Environmental, Health & Safety
Duke Energy
526 South Church Street
Mail Code EC3XP
Charlotte, North Carolina 28202
Subject: Revised Interim Monitoring Plans for 14 Duke Energy Facilities
3rd Quarter 2018
Dear Mr. Draovitch:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
The North Carolina Department of Environmental Quality (DEQ) is providing the attached revised
Interim Monitoring Plans (IMPS) for the respective coal ash facilities. Per our agreement, DEQ
will be providing Duke Energy with updated IMPs quarterly until the individual facility Corrective
Action Plans are approved, and Duke Energy will include and begin sampling any newly installed
groundwater assessment wells as part of the facility IMP which DEQ will formally include in the
subsequent IMPs.
The attached IMPS only contain references to groundwater monitoring locations. DEQ may elect
to require establishment of surface water monitoring program in the future related to the ongoing
IMPs or corrective action performance monitoring. The requirement for an annual monitoring
report for each respective coal facility as set forth in the May 1, 2017 letter submitted will be due
April 30, 2019.
The attached revised facility IMPS shall be conducted on a quarterly basis pursuant to 15A NCAC
02L .0110, until Corrective Action Plans are approved for the individual facilities or as directed
otherwise by DEQ. The quarterly sampling events will be conducted in conjunction with planned
compliance monitoring sampling events for three quarters during the calendar year, supplemented
with an additional sampling event conducted at each facility in order to provide four rounds of
monitoring data to evaluate seasonal fluctuations during a year -long timeframe. If sampling an
individual groundwater location is problematic, please contact the appropriate Regional Office.
In order to optimize the groundwater monitoring at each facility, DEQ will be removing the
groundwater monitoring condition from the NPDES permits as they are reissued. Duke Energy
shall continue to monitor the compliance wells separately under the individual NPDES permits
until the NPDES permits are reissued with no groundwater monitoring condition. At that time,
the compliance wells shall continue to be monitored per the attached revised IMPs under the
authority of 15A NCAC 02L .0110.
-r—'--Nothing Compares
State of North Carolina I Environmental Quality I Division of Water Resources
Water Quality Regional Operations Section
1636 Mail Service Center I Raleigh, North Carolina 27699-1636
919-707-9129

DEQ is open to consider further optimization of the IMPs following a qualitative and quantitative
review of site -specific data. A thorough analysis of spatial and temporal trends related to
contaminant distribution that include determination of background conditions and identification of
areas impacted by coal ash residuals must be provided as a decision framework to support
improvements to long-term monitoring programs.
If you have any questions, please feel free to contact the appropriate Regional Office or Steve
Lanter (Central Office) at [phone].
Sincerely,
Jon Ris aard, Section Chief
Animal Feeding Operations and Groundwater
Attachments: Revised Interim Monitoring Plans for the 14 coal ash facilities
cc: WQROS Regional Offices
WQROS Central File Copy

Revised Allen Steam Station Interim Monitoring Plan — Groundwater Onh
Wells to be Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
_
_
AB-10D
AB-10S
AB-11D
X
AB-12D
AB-12S
AB-13D
X
AB-13S
X
AB-14BR
Monitor pH.
AB-14D
AB-1R
AB-2
AB-20D
Monitor pH.
AB-20S
AB-21BRL
X
Monitor pH.
AB-21D
Sample to be analyzed for total boron and sulfate
only.
AB-21 S
X
AB-21 SL
X
AB-22BRL
Need to discuss possible additional assessment
needed at this location... please contact MRO.
AB-22BR
AB-22D
AB-22S
AB-23BRU
Sample to be analyzed for total boron and sulfate
only.
AB-23S
AB-24BR
AB-24D
Sample to be analyzed for total boron and sulfate
on! .
AB-24S
AB-24SL
AB-25BR
Sample to be analyzed for total boron and sulfate
only.
A13-25BRU
Sample to be analyzed for total boron and sulfate
only.
AB-25S
X
A113-25SL
X
Monitor pH.
AB-26D
AB-26S
AB-27BR
Monitor boron concentrations due to increasing
trend observed.
Allen Steam Station Pagel of 5 June 29, 2018

Wells to be Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
AB-27D
—
AB-27S
AB-28D
Monitor pH. Additional development may be
necessary.
AB-28 S
AB-29D
Monitor boron concentrations due to increasing
trend observed.
AB-29S
AB-29SL
Elevated pH.
AB-2D
AB-30D
AB-30S
AB-31 S
AB-32D
Sample was not collected 3/2/2018. Sample must
be collected as indicated in this IMP. If a sample is
not collected justification must be provided with
data submittal.
AB-32S
AB-33D
X
Continues to exhibit water quality issues (elevated
H). Please contact MRO to discuss further.
AB-33S
X
AB-34D
AB-34S
AB-35BR
X
Monitor chromium concentration.
AB-35D
Sample to be analyzed for total boron and sulfate
only.
AB-35S
X
AB-36D
AB-36S
AB-37D
AB-37S
AB-38BR
AB-38D
AB-38S
AB-39D
AB-39S
AB-4BR
X
AB-4D
X
AB-4S
X
AB-5
AB-6A
X
AB-6R
X
Allen Steam Station Page 2 of 5 June 29, 2018

Sample for
Wells to be Sampled Radionuclides
AB-9D X
AB-9S X
BG-1DA X
Regional Office Notes
Note: BG-1D has been abandoned thus removed
from the IMP. BG-1DA was installed as
replacement well.
BG-1 S
X
BG-213RA-2
X
Note: BG-2BR has been abandoned thus removed
from the IMP. BG-2BRA-2 was installed as
replacement well.
Continues to exhibit water quality issues (elevated
H). Please contact MRO to discuss further.
BG-2D
X
BG-2S
X
BG-3D
X
BG-3S
X
BG-4BR
X
BG-4D
X
BG-4S
X
GWA-14DA
Note: GWA-14D has been abandoned thus removed
from the IMP. GWA-14DA was installed as
replacement well.
Monitor pH. Additional well development may be
necess
GWA-14S
GWA-15D
GWA-15S
GWA-16D
GWA-16S
GWA-17D
X
GWA-17S
X
GWA-18D
GWA-18S
GWA-19D
Sample to be analyzed for total boron and sulfate
only.
GWA-19S
GWA-1BR
X
GWA-lD
X
GWA-1 S
X
GWA-21BR
X
Monitor pH. Additional development may be
necessary.
Allen Steam Station Page 3 of 5 June 29, 2018

Sample for
Wells to be Sampled
Radionuclides
Regional Office Notes
(X)
Note: GWA-21D has been abandoned thus removed
GWA-21DA
X
from the IMP. GWA-21DA was installed as
X
replacement well.
GWA-21 S
GWA-22D
GWA-22S
GWA-23D
Sample to be analyzed for total boron and sulfate
only.
GWA-23S
X
GWA-24BR
Monitor pH. Additional development may be
necessary.
GWA-24D
Note: GWA-24S has been abandoned thus removed
from the IMP. GWA-24SA was installed as
GWA-24SA
replacement well.
Monitor chromium concentration.
GWA-26D
GWA-26S
GWA-2D
X
GWA-2S
X
Note: GWA-3BR has been abandoned thus removed
from the IMP. GWA-3BRA was installed as
GWA-3BRA
X
replacement well.
Well should be replaced ASAP ... please contact
MRO to discuss.
GWA-3D
X
GWA-3S
X
GWA-4BR
X
Monitor boron concentrations due to increasing
trend observed.
GWA-4D
X
GWA-4S
X
Note: GWA-5BR has been abandoned thus removed
from the IMP. GWA-5BRA was installed as
GWA-5BRA
X
replacement well.
Need to discuss possible additional assessment in
this location sulfate/TDS ... please contact MRO.
GWA-5D
X
GWA-5S
X
Note: GWA-6BR has been abandoned thus removed
GWA-6BRA
X
from the IMP. GWA-6BRA was installed as
replacement well.
Allen Steam Station Page 4 of 5 June 29, 2018

Wells to be Sampled
GWA-6DA
Sample for
Radionuclides
X
Regional Office Notes
Note: GWA-61) has been abandoned thus removed
from the IMP. GWA-6DA was installed as
replacement well.
GWA-6S
X
GWA-7D
X
GWA-7S
X
GWA-8D
GWA-8S
Monitor chromium concentrations.
GWA-9BR
X
GWA-9D
X
GWA-9S
X
Minimum Parameters to be Analvzed
Aluminum Boron Copper
Alkalinity Cadmium Hexavalent
Antimony
Arsenic
Barium
Beryllium
Chromium
Calcium Iron
Chloride
Chromium
Cobalt
Lead
Manganese
Mercury Selenium
Molybdenum Sodium
Nickel
Potassium
Radium 226
Radium 228
Strontium
Sulfate
Sulfide
Total
Dissolved
Solids
Thallium
Total Organic
Carbon
Total
Combined
Uranium
Total
Suspended
Solids
Vanadium
Zinc
Allen Steam Station Page 5 of 5 June 29, 2018

Revised Asheville Steam Electric Plant Interim Monitoring_= Plan — Groundwater Onlv
Wells to be
Sampled
Sample for
Radionuclides Regional Office Notes
M
_
X
ABMW-11BR
AMW-03B
AMW-1B
X
AMW-2A
AMW-2B
water level only
APZ-30
water level only
B-1
water level only
B-1-A
water level only
B-2
water level only
CB-1
X
CB-lBR
water level only
CB-1BRL
water level only
CB-lD
X
CB-8BR
X
CB-8D
water level only
CB-9BR
X
CB-9SL
X
GW-1BR
GW-lD
GW-2
X
GW-3
X
GW-4
X
GW-5
X
MW-3D
X
MW-5BR
MW-5D
MW-8S
X
MW-10
X
MW-11
MW-11D
MW-13BR
MW-13D
MW-14BR
MW-15A
X
MW-15BR
water level only
X
X
MW-15D
MW-16A
Asheville Steam Electric Plant Page 1 of 3 June 29, 2018

MW-16BR
X
MW-17A
X
MW-18BR
X
MW-18BRL
X
MW-18D
X
MW-19BR
water level only
MW-20A
MW-21D
X
MW-22BR
X
MW-22D
X
MW-23BR
MW-23DL
MW-23DU
MW-24S
X
MW-6BR
X
MW-6D
X
MW-6S
X
MW-7BR
water level only
MW-8BR
water level only
MW-9BR
X
MW-9D
X
MW-9S
X
P-102
water level only
P-103
PZ-17D
X
PZ-17S
X
PZ-19
X
PZ-22
X
CB-2
CB-3R
X
CB-4
X
CB-4B
X
CB-5
CB-6
CB-7
CB-8
X
CB-9
X
GW-1
X
CCR-101BR
X
CCR-102D
X
CCR-102S
X
Asheville Steam Electric Plant Page 2 of 3 June 29, 2018

CCR-103BR
CCR-103D
CCR-104D
X
CCR-105BR
CCR-105D
X
EXT-01
X
EXT-02
AS-5BR
Potential pH issues; recommend redevelopment
AS-5BRL
Potential pH issues; recommend redevelopment
MW-15BRL
X
MW-16BRL
X
MW-16D
MW-17BRL
X
MW-20BR
X
MW-25BR
X
MW-25BRL
X
MW-25S
MW-26BRL
X
MW-26S
PZ-17BRL
X
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercug
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium nesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Asheville Steam Electric Plant Page 3 of 3 June 29, 2018

Belews Creek Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
Regional Office Notes
AB-1BR
AB -ID
AB-1 S
AB-2D
AB-2S
AB-3D
AB-3 S
AB-413R
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
AB-4BRD
AB-4D
AB-4S
AB-4SL
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
AB-4SAP
AB-5D
AB-5S
AB-5SL
AB-6D
AB-6S
AB-6SL
AB-7D
AB-7S
AB-8D
AB-8S
AB-8SL
AB-9BR
AB-913RD
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
AB-9D
AB-9S
BG-1D
BG-1 S
X
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
BG-2BRA
BG-2D
X
BG-2S
X
Belews Creek Steam Station Page 1 of 4 June 29, 2018

BG-3D
BG-3S
GWA-10DA
GWA-lOS
GWA-11D
GWA-11 S
GWA-12BR
GWA-12D
GWA-12S
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
GWA-16BR
GWA-16DA
GWA-16S
GWA-17D
GWA-17S
GWA-18D
GWA-18SA
GWA-19BR
GWA-19D
GWA-19SA
GWA-lBR
X
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
GWA-1D
X
GWA-1 S
X
GWA-20BR
GWA-20D
GWA-20SA
GWA-21 D
GWA-21 S
GWA-22D
GWA-22S
GWA-23D
GWA-23S
GWA-24BR
GWA-24D
X
GWA-24S
X
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
GWA-25BR
X
GWA-26BR
X
GWA-26D
X
GWA-26S
X
Belews Creek Steam Station Page 2 of 4 June 29, 2018

GWA-27BR
GWA-27D
GWA-27S
GWA-2D
GWA-2S
GWA-30D
X
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
GWA-30S
X
GWA-31D
GWA-31 S
GWA-32D
GWA-32S
GWA-3D
GWA-3S
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
GWA-6D
X
GWA-6S
X
GWA-7D
X
GWA-7SA
X
GWA-8D
X
GWA-8S
X
GWA-9BR
GWA-9D
Measure all field parameters plus water level, if pH is still high,
do not sample for lab analyses
GWA-9S
MW-104BR
MW-104D
MW-104S
MW-200BR
MW-200D
x
MW-200S
MW-201 BR
MW-201 D
MW-202BR
MW-202D
MW-202S
MW-203BR
MW-203D
MW-203 S
MW-204D
MW-204S
Belews Creek Steam Station Page 3 of 4 June 29, 2018

MW-3 X
EX-OB-I
EX-OB-2
Minimum Parameters to be Anah•zed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Belews Creek Steam Station Page 4 of 4 June 29, 2018

Revised Buck Combined Cycle Station Interim Monitoring Plan — Groundwater Onlv
Wells to be
Sampled
Sample for
Radionuclides
M
Regional Office Notes
AB -ID
AB-10BR
AB-10BRL
Water quality continues to be an issue (elevated pH
indicative of grout contamination). Well should be
replaced ASAP... please contact MRO to discuss.
AB-10D
AB-10S
AB-2BR
X
Sample to be analyzed for total boron and sulfate
only.
AB-2D
X
AB-2S
X
AB-2SL
X
AB-3D
AB-3 S
AB-4BRL
_
Water quality continues to be an issue (elevated pH).
Well should be replaced ASAP ... please contact MRO
to discuss.
AB-4BRU
AB-4S
AB-4SL
AB-5BRU
X
Volume has been insufficient to collect sample since
2015. Continue to monitor water level during each
sampling event and if volume is sufficient for
sampling then collect the sample accordingly.
AB-5S
X
AB-5 SL
X
AB-6BRU
AB-7BRU
AB-7S
AB-8BRU
AB-8S
AB-9BRA
X
Note: AB-9BR has been abandoned thus removed
from the IMP. AB-9BRA was installed as
replacement well.
AB-9BRUA
X
Note: AB-9BRU has been abandoned thus removed
from the IMP. AB-9BRUA was installed as
replacement well.
AB-9S
X
AS -ID
AS-1 S
Buck Combined Cycle Station Page 1 of 4 June 29, 2018

Wells to be
Sampled
Sample for
Radionuclides
Regional Office Notes
AS-2D
AS-3D
_
AS-3S
BG-1BRA
X
Note: BG-1BR has been abandoned thus removed
from the IMP. BG-1BRA was installed as
replacement well.
Monitor chromium concentration observed.
BG-1 S
X
BG-1DA
X
Note: BG-lD has been abandoned thus removed from
the IMP. BG-1DA was installed as replacement well.
Water quality still an issue (appears to be grout
contaminated). Well should be replaced
ASAP... please contact MRO to discuss.
BG-2D
X
BG-2S
X
BG-3BRU
X
BG-3 S
X
GWA-lOD
GWA-10S
GWA-11D
GWA-11 S
GWA-12BRU
X
GWA-12S
X
GWA-13D
Monitor TDS concentration observed 2/19/18.
GWA-13SR
GWA-14BR
X
GWA-14D
X
Sample to be analyzed for total boron and sulfate
onl .
GWA-14S
X
GWA-15BR
X
GWA-15D
X
GWA-15S
X
GWA-16BR
X
GWA-16D
X
GWA-16S
X
GWA-17S
GWA-18DA
X
Note: GWA-18D has been abandoned thus removed
from the IMP. GWA-18DA was installed as
replacement well.
Need to discuss possible additional assessment in this
location (sulfate/TDS) ... please contact MRO.
Buck Combined Cycle Station Page 2 of 4 June 29, 2018

Wells to be
Sampled
GWA-18S
Sample for
Radionuclides
(X
Regional Office Notes
Monitor pH.
X
GWA-19D
X
GWA-19S
X
GWA-1D
X
GWA-1 S
X
GWA-20D
X
GWA-20S
X
GWA-22D
X
GWA-2BRA
X
Note: GWA-2BR has been abandoned thus removed
from the IMP. GWA-2BRA was installed as
replacement well.
GWA-2BRU
X
GWA-2S
X
GWA-3BR
X
GWA-3BRU
X
GWA-3S
X
GWA-4D
X
GWA-4S
X
GWA-5BRU
X.
GWA-5S
X
GWA-6BR
X
GWA-6BRL
X
Need to discuss possible additional assessment in this
location sulfate/TDS ... please contact MRO.
GWA-6BRU
X
GWA-6S
X
Volume has been insufficient to collect sample since
2016. Continue to monitor water level during each
sampling event and if volume is sufficient for
sampling then collect the sample accordin 1 .
GWA-7D
X
GWA-7S
X
GWA-8D
GWA-9BRA
X
Note: GWA-9BR has been abandoned thus removed
from the IMP. GWA-9BRA was installed as
replacement well.
Need to discuss water quality issues and potential well
replacement ASAP... please contact MRO.
GWA-9D
X
GWA-9S
X
MW-10D
MW-11BR
X
MW-11BRL
X
Buck Combined Cycle Station Page 3 of 4 June 29, 2018

Wells to be
Sampled
MW-11D
Sample for
Radionuclides
X
Regional Office Notes
MW-11 S
X
MW-12D
MW-12S
MW-13D
MW-lD
MW-1S
MW-3D
X
MW-3S
X
MW-4D
MW-4S
MW-5D
MW-5S
MW-6BR
X
MW-6D
X
MW-6S
X
MW-7D
MW-7S
MW-8BRA
X
Note: MW-8BR has been abandoned thus removed
from the IMP. MW-8BRA was installed as
replacement well.
Monitor sulfate and TDS due to increasing
concentrations.
MW-8D
X
MW-8S
X
MW-9D
X
MW-9S
X
Minimum Parameters to be Analyzed
Aluminum
Boron
Cop2er
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Antimony
Calcium
Iron
Nickel
Strontium
Total CombinedUranium
Arsenic
Chloride
Lead
Potassium
Sulfate
Total SuspendedSolids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
Total Dissolved Solids
Zinc
Buck Combined Cycle Station Page 4 of 4 June 29, 2018

Revised Cape Fear Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
M
Regional Office Notes
ABMW-1
X
ABMW-1BR
X
ABMW-1 S
X
ABMW-2SL
ABMW-2SU
ABMW-3
X
ABMW-3BR
ABMW-3 SR
X
ABMW-4
X
ABMW-4S
X
ABMW-5BR
ABMW-5S
BGMW-4
X
BGTMW-4
X
CMW-01
X
CMW-02
CMW-03
X
CMW-5R
CMW-06
X
CMW-07
X
CMW-08
X
CTMW-01
X
CTMW-02
CTMW-07
CTMW-08
X
MW-10
X
MW-10BR
X
MW-l0BRL
MW-10D
MW-11
X
MW-12
X
MW-12BR
MW-13
MW-15BR
X
MW-15SL
X
MW-15SU
X
MW-16BR
X
Cape Fear Steam Electric Plant Page 1 of 3 June 29, 2018

MW-16S
X
MW-17BR
MW-17SL
X
MW-17SU
X
MW-18S
X
MW-19S
MW-20BR
MW-20S
MW-21BR
MW-21 SL
X
MW-21 SU
X
MW-22BR
MW-22S
MW-23BR
MW-23D
X
MW-23S
X
MW-24BR
X
MW-24S
X
MW-5BRR
MW-6BR
X
MW-9
X
MW-9BR
X
PZ-1
PZ-10
PZ-2
PZ-3D
PZ-3 S
PZ-4
PZ-5
X
PZ-6
PZ-7
PZ-8
Cape Fear Steam Electric Plant Page 2 of 3 June 29, 2018

Minimum Parameters to be Anab zed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese Radium 228
Dissolved
Zinc
Solids
Cape Fear Steam Electric Plant Page 3 of 3 June 29, 2018

Revised James E. Rogers Enerzy Complex Interim Monitoring, Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
M
Regional Office Notes
AB-1BRO
AB-1D
AB -IS
AB-2BRO
AB-2D
AB-2S
AB-3BRUA
AB-3I
AB-3 S
X
AB-3 SLA
X
AB-4BR
AB-4D
AB-4S
X
AB-4SL
X
AB-5BR
AB-5BRU
AB-5 S
X
AB-6BR
AB-6D
AB-6S
X
AS -ID
AS-1 SB
AS-2BR
AS-2D
X
AS-2S
X
AS-3BRU
AS-4D
AS-4S
AS-5BR
AS-5BRU
AS-5S
AS-6BRA
AS-6D
AS-6S
AS-7BRA
AS-7D
AS-7S
X
James E. Rogers Energy Complex Page 1 of 6 June 29, 2018

AS-8D
AS-8S
BG1-BRA
BG-1D
X
BG-1 S
X
BG-21)
Water level only
CCPMW-lD
X
CCPMW-1 S
X
CCPMW-2D
Water level only
CCPMW-2S
Water level only
CCPMW-3D
Water level only
CCPMW-3S
Water level only
CCPMW-4
Water level only
CCPMW-5
Water level only
CCPMW-6D
Water level only
CCPMW-6S
Water level only
CCPTW-lD
Water level only
CCPTW-1 S
Water level only
CCPTW-2
Water level only
CLMW-1
X
CLMW-2
CLMW-3D
X
CLMW-3S
X
CLMW-5D
CLMW-5S
CLMW-6
CLP-1
Water level only
CLP-2
Water level only
CLP-3
Water level only
CLP-4
Water level only
GWA-1 OD
GWA-lOS
GWA-11BRU
X
GWA-11 S
X
GWA-12BRU
GWA-12S
GWA-13BR
GWA-14BR
GWA-14D
GWA-14S
GWA-1BRU
James E. Rogers Energy Complex Page 2 of 6 June 29, 2018

GWA-20BR
X
GWA-20D
X
GWA-20S
X
GWA-21 BR
X
GWA-21 BRU
X
GWA-21 S
X
GWA-22BRU
GWA-22S
X
GWA-23D
GWA-24BR
GWA-24D
GWA-24S
GWA-25 S
GWA-25D
Water level only
GWA-26S
GWA-26D
Water level only
GWA-27BR
X
GWA-27D-A
X
GWA-28BR
GWA-28BRU
GWA-28S
GWA-29BRA
GWA-29D
X
GWA-2BR
X
GWA-2BRU
X
GWA-2S
X
GWA-30BR
GWA-30BRU
Water level only
GWA-30S
GWA-31 BR -A
GWA-31D
GWA-32D
GWA-32BR
Water level only
GWA-33BR
GWA-33D
GWA-33S
GWA-34S
GWA-35D
GWA-35S
GWA-36D
X
GWA-36S
X
James E. Rogers Energy Complex Page 3 of 6 June 29, 2018

GWA-37D
GWA-37S
GWA-38D
GWA-38S
GWA-39S
Water level only
GWA-3D
X
GWA-40S
Water level only
GWA-42S
Water level only
GWA-43D
GWA-43S
GWA-44BR
GWA-44D
GWA-44S
GWA-45D
Water level only
GWA-45S
GWA-46D
GWA-47D
GWA-48BR
GWA-4BR
Water level only
GWA-4D
X
GWA-4S
X
GWA-51D
GWA-54D
GWA-54BRO
GWA-54S
GWA-56D
GWA-56S
GWA-5BRU
GWA-5 S
GWA-6S
GWA-6D
Water level only
MW-1 OD
MW-10S
MW-11 BRO
Redevelop. Sample for boron only.
MW-11DA
MW-11 S
X
MW-20D
MW-20DR
MW-21 BR
MW-21D
MW-22BR
James E. Rogers Energy Complex Page 4 of 6 June 29, 2018

MW-22DR
MW-23D
MW-23DR
MW-23S
MW-24D
X
MW-24DR
X
MW-25DR
MW-2D-A
MW-30D
X
MW-30DA
X
MW-30S
X
MW-32BR
X
MW-32D
X
MW-32S
X
MW-34S
MW-34BRU
MW-36BRU
MW-36S
MW-38BR
X
MW-38D
X
MW-38S
X
MW-40BRU
MW-40S
MW-42DA
MW-42S
MW-8D
MW-8S
X
U5-1D
U5-1 S
U5-2BR
U5-2D
X
U5-2S-SL-A
X
U5-4BRA
U5-4D
U5-4S
U5-5BR
U5-5D
X
U5-6D
U5-6S
U5-MR
U5-8D
James E. Rogers Energy Complex Page 5 of 6 June 29, 2018

U5-8S
CCR12-S
CCR-12D
CCR-13D
CCR-15D
CCR-IB-1 S
CCR-IB-ID
CCR-1B-3 S
CCR-IB-3D
CCR-U5-4S
Sample V Quarter 2018 only
CCR-U5-4D
Sample V Quarter 2018 only
CCR-7S
CCR-7D
AB-3-MA15
Pump test well.
AB-3-LA15
Pump test well.
AB-4-UA15
Pump test well.
AB-4-LA15
Pump test well.
CCR-7S
CCR-7D
CCR-8D
CCR-U5-3D
CCR-U5-3S
Minimum Parameters to be Analyzed
Aluminum
Boron
C er
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
James E. Rogers Energy Complex Page 6 of 6 June 29, 2018

Dan River Combined Cycle Station Interim Monitoring Plan — Groundwater Onl%
Wells to be Sampled
Sample for
Radionuclides
Regional Office Notes
AB-30BR
AB-30D
AB-30S
BG-1 DA
X
Measure water level if not dry; collect all filed
parameters if possible; if there is some water but
not enough water for all samples, please collect
samples for boron, sulfate, chloride, TDS only.
BG-10D
X
BG-10S
X
BG-10BR
X
BG-5D
BG-5S
GWA-10D
GWA-12D
GWA-12S
GWA-14D
GWA-14S
GWA-15D
GWA-16D
GWA-16S
GWA-17D
GWA-20D
GWA-20S
GWA-4D
GWA-4S
GWA-5BR
GWA-SBRD
GWA-6D
X
GWA-6S
X
GWA-7D
GWA-7S
GWA-8BR
GWA-8D
GWA-8S
GWA-9D
X
GWA-9S
X
MW-11
X
Measure water level if not dry; collect all filed
parameters ifpossible; if there is some water but
Dan River Combined Cycle Station Page 1 of 2 June 29, 2018

not enough water for all samples, please collect
samples for boron, sulfate, chloride, TDS only.
MW-11D
X
MW-12
X
MW-12D
X
MW-21D
MW-21 S
MW-22BR
X
MW-22D
X
MW-22S
X
MW-23BR
MW-23D
MW-317BR
MW-317BRL
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Dan River Combined Cycle Station Page 2 of 2 June 29, 2018

Revised H. F. Lee Energy Complex Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
ABMW-1
ABMW-1 S
Sample for
Radionuclides
(X)
X
Regional Office Notes
AMW-11BC
_
AMW-11S
X
AMW-12BC
AMW-12S
AMW-13BC
AMW-13S
AMW-14BC
AMW-14S
AMW-15BC
AMW-15S
AMW-16BC
AMW-17BC
AMW-17S
AMW-18S
X
AMW-6RBC
AMW-9BC
AMW-19S
AMW-19BC
AMW-20S
AMW-20BC
AMW-21 S
AMW-21BC
AMW-22S
AMW-22BC
AMW-23 S
AMW-23BC
BGMW-10
BGMW-9
BW-1
CCR-100S
X
CMW-10
CMW-5
CMW-6R
CMW-7
CMW-8
H. F. Lee Energy Complex Page 1 of 3 June 29, 2018

CTMW-1
CW-1
CW-2
CW-3
CW-4
DMW-1
DMW-2
DMW-3
IABMW-1
IABMW-1 S
X
IABMW-2S
IABMW-3
IA 3MW-3 S
X
IMW-04BC
IMW-05BC
IMW-1BC
IMW-1S
X
IMW-2BC
IMW-3BC
IMW-3S
X
IMW-4S
X
IMW-5S
X
LLMW-1
LLMW-1 S
LLMW-2
LLMW-2S
MW-1
MW-2
MW-3
X
SMW-3
SMW-4
SMW-5
H. F. Lee Energy Complex Page 2 of 3 June 29, 2018

Minimum Parameters to be Analyzed
Aluminum
Boron
Co er
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
H. F. Lee Energy Complex Page 3 of 3 June 29, 2018

Revised Marshall Steam Station Interim Monitorin Plan — Groundwater Onl
Sample for
Wells to be Sampled Radionuclides
Regional Office Notes
AB-10BR
AB-10D
AB-10S
AB-10SL
AB-1 ID
AB-11 S
AB-12BR
X
AB-12D
X
AB-12S
X
AB-12SL
X
AB-13D
AB-13S
AB-14D
Increasing trend in boron concentrations observed.
AB-14S
AB-15BR
AB-15D
AB-15S
AB-15SL
Increasing trend in boron and TDS concentrations
observed.
AB-16D
AB-16S
AB-17D
AB-17S
AB-18D
Need to discuss possible additional assessment in
this location (increasing boron
concentrations) ... please contact MRO.
AB-18S
�.
AB-1BRL
X
AB-lBR
X
Increasing trend in boron concentrations observed.
AB-lD
X
Increasing trend in boron concentrations observed.
AB -IS
X
AB-20D
AB-20S
AB-21 D
AB-21 S
Increasing trend in boron, chloride and arsenic
concentrations observed.
AB-21)
X
Monitor boron concentrations.
AB-2S
X
Marshall Steam Station Page 1 of 5 June 29, 2018

Sample for
Wells to be Sampled Radionuclides
Regional Office Notes
X
_
AB-3D
AB-3S
Increasing trend in observed COI concentrations.
AB-4D
AB-4S
AB-4SL
AB-5BR
X
Monitor TDS concentrations due to observed
increasing trend.
AB-5D
X
Increasing trend in boron and thallium
AB-5S
X
concentrations observed. Are there other site
activities that are contributing or has historically
contributed to the COIs observed at this location?
AB-6BRL
Monitor sulfate concentrations.
Note: AB-6BR has been abandoned and thus
removed from the IMP. AB-6BRA was installed
as replacement well.
AB-6BRA
Water quality remains an issue (elevated pH).
Boron has doubled since last sampling event.
Recommend additional well development prior to
next sampling event and we will reevaluate the
next round of sampling results.
AB-6D
AB-6S
AB-7D
AB-7S
AB-8D
AB-8S
AB-9BR
AB-9D
AB-9S
AL-lBR
X
Monitor closely, boron concentrations are trending
upward near 2L standard.
AL-11)
X
Increasing trend in boron concentrations observed.
AL-1 S
X
Increasing trend in boron concentrations observed.
AL-2BR
Increasing trend in boron concentrations observed.
AL-2BRL
Increasing trend in boron concentrations observed.
Need to discuss possible additional assessment in
AL-2BRLL
this location (increasing boron
concentrations) ... please contact MRO.
Marshall Steam Station Page 2 of 5 June 29, 2018

Sample for
Wells to be Sampled
Radionuclides
Regional Office Notes
X
Increasing trend in boron, TDS and selenium
AL-21)
concentrations observed.
Increasing trend in boron, TDS and chromium
AL-2S
concentrations observed.
Water quality issues remain (elevated pH). Please
AL-3BR
contact MRO to discuss possible well replacement.
AL-31)
Increasing trend in boron concentrations observed.
AL-3S
Monitor pH. Recommend additional well
AL-4BRL
development prior to next sampling event and we
will reevaluate the next round of sampling results.
Increasing trend in boron and TDS concentrations
AL-4BR
observed.
Increasing trend in boron and TDS concentrations
AL-41)
observed.
Note: BG-lBR has been abandoned and thus
BG-1BRA
X
removed from the IMP. BG-1BRA was installed
as replacement well.
BG-lD
X
BG-1 S
X
BG-2BR
X
BG-2S
X
BG-3BR
X
BG-3D
X
BG-3S
X
GWA-lBR
X
GWA-1D
X
GWA-1 S
X
Note: GWA-21) has been abandoned and thus
removed from the IMP. GWA-2DA was installed
as replacement well.
GWA-2DA
Well continues to exhibit elevated pH (likely grout
contamination). Well should be replaced ASAP.
GWA-2S
GWA-3D
GWA-3 S
GWA-4D
GWA-4S
GWA-5D
GWA-5S
_
GWA-6D
X
X
GWA-6S
Marshall Steam Station Page 3 of 5 June 29, 2018

Wells to be Sampled
GWA-7D
GWA-7S
GWA-8D
GWA-8S
GWA-9BR
GWA-1 OD
GWA-10S
GWA-11BR
GWA-11 D
GWA-11 S
GWA-12BR
GWA-12D
GWA-12S
GWA-13DA
GWA-13S
GWA-14D
GWA-14S
GWA-15S
MS-8
MS-10
MS-11
MS-13
MW-1
MW-10D
MW-10S
MW-11D
MW-1 l S
MW-12D
MW-12S
MW-13D
MW-13S
MW-14BR
MW-14D
MW-14S
MW-2
MW-3
MW-4
Sample for
Radionuclides
X
X
X
X
X
94
Regional Office Notes
trend in boron concentrations observed.
Sample to be analyzed for total boron and sulfate
Sample to be analyzed for total boron and sulfate
only.
Marshall Steam Station Page 4 of 5 June 29, 2018

Wells to be Sampled
MW-4D
Sample for
Radionuclides
(X )
X
Regional Office Notes
MW-5
MW-6D
X
Increasing trend in boron concentrations observed.
MW-6S
X
MW-7
Water level only
MW-7D
X
MW-7S
X
MW-8D
X
MW-8S
X
MW-9D
X
MW-9S
X
OB-1 (Dry Ash Basin)
013-1 (Dry Ash Landfill)
Water level only
Minimum Parameters to be Anal► zed
Aluminum
Boron
Copper
Mercury
Molybdenum
Selenium
Sodium
Thallium
Total Organic
Alkalinity
Cadmium
Hexavalent
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Vanadium
Barium
Chromium
Maenesium
Radium 226
Sulfide
Total
Beryllium
Cobalt Manganese
Radium 228
Dissolved
Zinc
Solids
Marshall Steam Station Page 5 of 5 June 29, 2018

Revised Mayo Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Sample for
Wells to be Sampled Radionuclides
(X)
Regional Office Notes
ABMW-1
X
ABMW-2
ABMW-2BR
ABMW-2BRL
ABMW-3
ABMW-3S
ABMW-4
X
ABMW-4BR
ABMW-4D
BG-1
X
BG-2
X
CW-1
CW-lD
CW-2
X
CW-2D
X
CW-3
CW-4
CW-5
CW-6
X
MW-10BR
X
MW-11BR
water level only
MW-12D
X
MW-12S
X
MW-13BR
MW-14BR
MW-15BR
water level only
MW-16BR
X
MW-16D
X
MW-16S
MW-18D
MW-18BR
MW-19D
MW-19BR
MW-2
MW-3
X
MW-3BR
MW-4
Mayo Steam Electric Plant Page 1 of 2 June 29, 2018

MW-5BR
MW-8BR
MW-9BR water level only
MW-9BRL
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Mayo Steam Electric Plant Page 2 of 2 June 29, 2018

Riverbend Steam Station Interim Monitoring- Plan — Groundwater OWN -
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
AB-11)
Measure all field parameters plus water level, if pH still
high, not sample for lab analyses.
AB-1 S
Not sample. Please evaluate whether the well needs to be
redeveloped or replaced..
AB-2D
AB-2S
AB-8D
AB-8S
BG-1DA
BG-1 S
BG-2BR
BG-2D
BG-2S
BG-3D
BG-3S
BG-4BR
X
Not Sample. Please evaluate whether this well should be
replaced because the well has not been sampled since 5/23/2017
due to high pH
BG-4D
X
BG-4S
BG-5BR
X
BG-5D
GWA-10BRU
Field parameters plus water level, if pH still high, not sample for
lab analyses.
GWA-10S
GWA-11D
GWA-11 S
GWA-12D
X
GWA-12S
X
GWA-13D
GWA-13S
GWA-14D
GWA-14S
GWA-15D
GWA-15S
X
GWA-1BRU
GWA-1 S
GWA-20BR
GWA-20DA
Riverbend Steam Station Pagel of 3 June 29, 2018

GWA-20S
GWA-21BR
GWA-21 D
GWA-21 S
GWA-22BR-A
X
GWA-22D
X
GWA-22S
X
GWA-23BR
Not Sample if pH is still high, but. please evaluate whether this
well should be replaced.
GWA-23DA
GWA-23 S
GWA-2BR
X
GWA-2BRU
X
GWA-2S
X
GWA-3BR
GWA-3D
GWA-3 SA
GWA-4BR
GWA-4D
X
GWA-4S
X
GWA-5D
GWA-5S
GWA-6D
X
GWA-6S
X
GWA-7BR
GWA-7D
GWA-7S
GWA-8D
X
GWA-8S
X
GWA-9BR
N
GWA-9D
X
GWA-9S
X
MW-10
X
MW-11DR
MW-11 SR
MW-13
MW-14
X
MW-15
MW-15BR
MW-15DA
MW-1D
MW-1S
Riverbend Steam Station Page 2 of 3 June 29, 2018

MW-2D
MW-2SA
MW-3D
MW-3S
MW-4D
MW-4S
MW-5D
MW-5S
MW-6D
MW-6S
MW-7BRA
X
MW-7D
X
MW-7SR
X
MW-8D
MW-8I
MW-8S
MW-9
X
MW-9BRA
X
MW-9DA
X
OB-1
Water level only
OB-2
Water level only
Minimum Parameters to be Analyzed
Aluminum
Boron
CTper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Riverbend Steam Station Page 3 of 3 June 29, 2018

Revised Roxboro Steam Electric Plant Interim Monitoring; Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
M
Regional Office Notes
water level only
ABMW-1
X
ABMW-1BR
X
ABMW-2
X
water level only
ABMW-2BR
X
ABMW-3
ABMW-3BR
ABMW-3BRL
ABMW-4
X
ABMW-4BR
X
ABMW-5
X
ABMW-5D
X
ABMW-6
ABMW-6BR
ABMW-7
water level only
ABMW-7BR
ABMW-7BRL
BG-1
X
BG-lBR
X
BG-1BRL
water level only
BG-1 BRLR
X
BG-2BR
X
CW-1
CW-2
X
CW-2D
X
CW-3
CW-3D
CW-4
CW-5
X
GMW-10
GMW-11
GMW-6
X
GMW-7
GMW-8
GMW-9
MW-1BR
MW-2BR
MW-3BR
X
Roxboro Steam Electric Plant Page 1 of 3 June 29, 2018

MW-4BR
MW-4BRL
water level only
MW-5BR
X
MW-5D
X
MW-6BR
X
MW-6D
X
MW-7BR
MW-8BR
MW-9BR
X
MW-IOBR
X
MW-11BR
X
MW-11D
X
MW-12BR
MW-13BR
X
MW-14BR
X
MW-15BR
X
MW-15D
X
MW-16BR
X
MW-17BR
X
MW-18BR
X
MW-18D
X
MW-19BRL
X
MW-2
X
MW-20BRL
MW-21BRL
water level only
MW-22BR
MW-22D
MW-23BR
water level only
MW-23BRR
MW-24BR
MW-25BR
MW-26BR
MW-27BR
MW-28BR
MW-29BR
MW-30BR
MW-31 BR
MW-32BR
MW-33BR
GPMW-1 S
GPMW-ID
Roxboro Steam Electric Plant Page 2 of 3 June 29, 2018

GPMW-1BR
GPMW-2D
GPMW-2BR
GPMW-3D
GPMW-3BR
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper Mercu
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
May
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Roxboro Steam Electric Plant Page 3 of 3 June 29, 2018

Revised L.V. Sutton Enerly Complex Interim Monitorin Plan — Groundwater On1F
Wells to be Sampled
Sample for
Radionuclides
M
Regional Office Notes
AW-lC
AW-2C
AW-2D
AW-3C
X
AW-4C
X
AW-5C
AW-5D
AW-6R-D
AW-6R-E
AW-7R-D
AW-08C
AW-09C
AW-09D
MW-05C
X
MW-05CD
X
MW-05D
X
MW-05R-E
MW-7C
MW-8
X
MW-8B
X
MW-8D
X
MW-8E
X
MW-11
MW-12R
MW-16D
MW-19
MW-20
MW-20D
MW-21C
MW-22B
MW-22C
MW-23B
MW-23C
MW-23D
X
MW-23E
X
MW-24R-B
MW-24R-C
MW-27B
MW-27C
X
L.V. Sutton Energy Complex Page 1 of 2 June 29, 2018

MW-28B
MW-28C
MW-31 R-C
X
MW-32C
X
MW-33C
X
MW-36C
X
MW-37B
X
MW-37C
X
MW-37CD
X
MW-37D
X
MW-37E
X
MW-38B
MW-38C
X
MW-38D
X
MW-39B
MW-39C
X
MW-39D
X
MW-40B
MW-40C
MW-40D
MW-41B
X
MW-41C
X
MW-41D
X
MW-41E
SMW-01 C
SMW-02C
SMW-03C
SMW-04C
SMW-5C
SMW-06C
SMW-06D
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Antimony
Calcium
Iron
Nickel
Strontium
Total CombinedUranium
Arsenic
Chloride
Lead
Potassium
Sulfate
Total Suspended
Solids
Barium
Chromium
Ma nesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
Total Dissolved
Zinc
Solids
L.V. Sutton Energy Complex Page 2 of 2 June 29, 2018

Revised W. H. Weatherspoon Power Plant Interim MonitorinE Plan — Groundwater OnIY
Wells to be
Sampled
Sample for Radionuclides
(X)
Regional Office Notes
AW-01D
AW-01I
AW-01 S
AW-02D
AW-02S
AW-03D
AW-03I
AW-03S
BW-01
BW-02S
X
BW-03D
X
BW-03I
X
BW-03S
X
BW-4D
X
BW-4I
X
BW4S
X
CCR-101-BG
CAMA
X
CW-01
CW-02
CW-03
X
MW-01
X
MW-02
X
MW-03
X
MW-04
X
MW-05
X
MW-06
X
MW-07
X
MW-33D
MW-33I
MW-33S
MW-41D
MW-41I
MW-52
X
MW-53D
MW-53I
X
MW-54D
MW-55D
W. H. Weatherspoon Power Plant Page 1 of 2 June 29, 2018

MW-55I X
PW-1 (DEP 2)
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
W. H. Weatherspoon Power Plant Page 2 of 2 June 29, 2018

NORTH CAROLINA
Roy COOPED EnidewmentalQuality
c
MICHAEL S. PEGAN
50"W"),
LINDA CULPEPPER
trtterbn Vir+eaor
September 28, 2018
Paul Draovitch
Senior Vice President
Environmental, Health & Safety
Duke Energy
526 South Church Street
Mail Code EC3XP
Charlotte, North Carolina 28202
Subject: Revised Interim Monitoring Plans for 14 Duke Energy Facilities
4'' Quarter 2018
Dear Mr. Draovitch:
The North Carolina Department of Environmental Quality (DEQ) is providing the attached revised
Interim Monitoring Plans (IMPs) for the respective coal ash facilities. Per our agreement, DEQ
will be providing Duke Energy with updated IMPs quarterly until the individual facility Corrective
Action Plans are approved or as directed otherwise by DEQ, and Duke Energy will include and
begin sampling any newly installed groundwater assessment wells as part of the facility IMP which
DEQ will formally include in the subsequent IMPs.
The attached IMPs only contain references to groundwater monitoring locations. DEQ may elect
to require establishment of surface water monitoring program in the future related to the ongoing
IMPs or corrective action performance monitoring. The requirement for an annual monitoring
report for each respective coal facility as set forth in the May 1, 2017 letter submitted will be due
April 30, 2019.
The attached revised facility IMPs shall be conducted on a quarterly basis pursuant to 15A NCAC
02L .0110, until Corrective Action Plans are approved for the individual facilities or as directed
otherwise by DEQ. The quarterly sampling events will be conducted in conjunction with planned
compliance monitoring sampling events for three quarters during the calendar year, supplemented
with an additional sampling event conducted at each facility in order to provide four rounds of
North Carolina Department of Environmental Quality I Division of Water Resources JAFOGW Section
512 North Salisbury Street 11636 Mail Service Center I Raleigh, North Carolina 27699-1636
919.707.9129

monitoring data to evaluate seasonal fluctuations during a year -long timeframe. If sampling an
individual groundwater location is problematic, please contact the appropriate Regional Office.
In order to optimize the groundwater monitoring at each facility, DEQ will be removing the
groundwater monitoring condition from the NPDES permits as they are reissued. Duke Energy
shall continue to monitor the compliance wells separately under the individual NPDES permits
until the NPDES permits are reissued with no groundwater monitoring condition. At that time,
the compliance wells shall continue to be monitored per the attached revised IMPS under the
authority of 15A NCAC 02L .0110.
DEQ is currently participating in reviews to optimize the groundwater monitoring programs at the
Duke Energy coal ash facilities. This review process will result in revisions to the current
groundwater monitoring programs until corrective action is implemented at the respective facilities
and may streamline the effort related to quarterly IMP changes.
If you have any questions, please feel free to contact the appropriate Regional Office or Steve
Lanter (Central Office), at [phone].
Sincerely,
r`
Jon Ri ard, Section Chief
Animal Feeding Operations and Groundwater
Attachments: Revised Interim Monitoring Plans for the 14 coal ash facilities
cc: WQROS Regional Offices
WQROS Central File Copy

Revised Allen Steam Station Interim Monitoring Plan — Groundwater Only
Sample for
Wells to be Sampled
Radionuclides
Regional Office Notes
M
AB-10D
AB-10S
Monitor cobalt and manganese concentrations
(increasing).
AB-11D
X
AB-12D
AB-12S
AB-13D
X
AB-13S
X
AB-14BR
AB-14D
AB-lR
AB-2
AB-20D
AB-20S
AB-21BRL
X
Sample to be analyzed for total boron and sulfate
AB-21D
onl .
AB-21 S
X
AB-21 SL
X
AB-21 SS
X
Duke Energy proposed installation of bedrock and
lower bedrock well to be installed near the AB-10
AB-22BRL
location and will be utilized for delineation
pui- poses for AB-22 meet' 8/30/2018 .
AB-22BR
AB-22D
AB-22S
AB-23BRU
Sample to be analyzed for total boron and sulfate
only.
AB-23S
AB-24BR
Sample to be analyzed for total boron and sulfate
AB-24D
only.
A13-24S
Monitor arsenic and iron concentrations
(increasing).
AB-24SL
Monitor boron and TDS concentrations (increasing
and boron close to 2L).
Sample to be analyzed for total boron and sulfate
AB-25BR
onl .
AB-25BRU
Sample to be analyzed for total boron and sulfate
only.
Allen Steam Station Page 1 of 5 September 28, 2018

Wells to be Sampled
Sample for
Radionuclides
(XI
Regional Office Notes
AB-25S
X
AB-25SS
X
AB-25SL
X
AB-26D
AB-26S
AB-27BR
AB-27D
AB-27S
Monitor iron and manganese concentrations
(increasing).
AB-28D
Elevated pH. Recommend additional development
may be beneficial in attempt to improve water
quality.
AB-28S
AB-29D
Monitor boron concentrations (increasing).
AB-29S
AB-29SS
AB-29SL
Elevated pH. Recommend additional development
may be beneficial in attempt to improve water
uali .
AB-2D
AB-30D
AB-30S
Monitor arsenic concentrations (increasing).
AB-31 S
AB-32D
Monitor boron and sulfate concentrations
(increasing).
AB-32S
AB-33D
X
Continues to exhibit water quality issues (elevated
pH). Pending IMP reduction discussions.
AB-33S
X
AB-33SS
X
AB-34D
AB-34S
Monitor sulfate and TDS concentrations
increasin ).
AB-35BR
X
AB-35D
Sample to be analyzed for total boron and sulfate
only.
AB-35PWS
X
AB-35S
X
AB-36D
AB-36S
AB-37D
AB-37S
AB-38BR
Allen Steam Station Page 2 of 5 September 28, 2018

Sample for
Wells to be Sampled Radionuclides
x
Regional Office Notes
- -
AB-38D
AB-38S
AB-38SS
AB-39D
AB-39S
AB-4BR
X
AB-4D
X
AB-4S
X
AB-5
AB-6A
X
AB-6R
X
Monitor total radium concentrations (increasing).
AB-9D
X
Monitor iron due significant increase observed last
sampling event 6/1/2018 .
AB-9S
X
BG-lDA
X
Note: BG-lD has been abandoned thus removed
from the IMP. BG-lDA was installed as
replacement well.
Monitor chromium concentrations.
BG-1 S
X
BG-2BRA2
X
Note: BG-2BR has been abandoned thus removed
from the IMP. BG-2BRA-2.was installed as
replacement well.
Continues to exhibit water quality issues (elevated
pH). Additional development may be beneficial in
attempt to improve water quality.
BG-2D
X
BG-2S
X
BG-3D
X
BG-3S
X
BG-4BR
X
BG-4D
X
BG-4S
X
GWA-14DA
Note: GWA-14D has been abandoned thus removed
from the IMP. GWA-14DA was installed as
replacement well.
Elevated pH. Additional development may be
beneficial in attempt to improve water quality.
GWA-14S
GWA-15D
GWA-15S
Allen Steam. Station Page 3 of 5 September 28, 2018

Wells to be Sampled
Sample for
Radionuclides
ill
Regional Office Notes
GWA-16D
GWA-16S
GWA-17D
X
GWA-17S
X
GWA-18D
GWA-18S
GWA-19D
Sample to be analyzed for total boron and sulfate
only; however, if water quality comes into
compliance, a full sample suite (per IMP) should be
collected at this location.
GWA-19S
GWA-1BR
X
GWA-ID
X
GWA-1 S
X
GWA-21BR
X
Note: GWA-21D has been abandoned thus removed
from the IMP. GWA-21DA was installed as
replacement well.
GWA-21DA
X
GWA-21 S
X
GWA-22D
GWA-22S
GWA-23D
Sample to be analyzed for total boron and sulfate
only; however, if water quality comes into
compliance, a full sample suite (per IMP) should be
collected at this location.
GWA-23S
X
GWA-24BR
GWA-24D
GWA-24SA
Note: GWA-24S has been abandoned thus removed
from the IMP. GWA-24SA was installed as
replacement well.
GWA-26D
GWA-26S
GWA-2D
X
GWA-2S
X
GWA-3BRA
X
Note: GWA-3BR has been abandoned thus removed
from the IMP. GWA-3BRA was installed as
replacement well.
Additional development may be beneficial in
.
attempt to iml)rove water quality.
GWA-3D
X
GWA-3S
X
Allen Steam Station Page 4 of 5 September 28, 2018

Sample for
Wells to be Sampled Radionuclides
GWA-4BR X
Regional Office Notes
Additional development may be beneficial in
attempt to improve water quality.
GWA-4D
X
GWA-4S
X
GWA-5BRA
X
Note: GWA-5BR has been abandoned thus removed
from the IMP. GWA-5BRA was installed as
replacement well.
Duke Energy proposed installation of lower bedrock
well for vertical delineation pugoses.
GWA-5D
X
GWA-5S
X
GWA-6BRA
X
X
Note: GWA-6BR has been abandoned thus removed
from the IMP. GWA-6BRA was installed as
replacement well.
Note: GWA-6D has been abandoned thus removed
from the IMP. GWA-6DA was installed as
replacement well.
GWA-6DA
GWA-6S
X
GWA-7D
X
Monitor TDS concentrations (increasing).
GWA-7S
X
GWA-8D
Monitor TDS concentrations (increasing).
GWA-8S
GWA-9BR
X
GWA-9D
X
GWA-9S X
Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Total Organic
Carbon
Alkalinity Cadmium
Hexavalent
Chromium
Molybdenum Sodium
Total
Antimony Calcium
Iron
Nickel Strontium
Combined
Uranium
Total
Arsenic Chloride
Lead
Potassium Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Allen Steam Station Page 5 of 5 September 28, 2018

Revised Asheville Steam Electric Plant Interim Monitoring Plan — Groundwater OnIN
Wells to be
Sampled
Sample for
Radionuclides
x
Regional Office Notes
ABMW-11 BR
AMW-1B
X
AMW-2A
AMW-213
water level only
AMW-3B
X
APZ-30
water level only
AS-5BR
redevelopment needed
AS-5BRL
redevelopment needed
B-1
water level only
B-IA
water level only
B-2
water level only
CB-1
X
CB-1BR
water level only
CB-1BRL
water level only
CB-1D
X
CB-2
CB-3R
X
CB-4
X
CB-4B
X
CB-5
CB-6
CB-7
CB-8
X
CB-8BR
X
CB-81)
water level only
CB-9
X
CB-9BR
X
CB-9SL
X
CCR-100SL
X
CCR-100BR
X
CCR-100BRL
X
CCR-101BR
X
CCR-102D
X
CCR-102S
X
CCR-103BR
CCR-103D
CCR-104D
X
Asheville Steam Electric Plant Page 1 of 4 September 28, 2018

CCR-105BR
CCR-105D
X
EXT-1
X
EXT-2
EXT-A
GW-1
X
GW-1BR
GW-lD
GW-2
X
GW-3
X
GW-4
X
GW-5
X
MW-3D
X
MW-5BR
MW-5D
MW-6BR
X
MW-6D
X
MW-6S
X
MW-7BR
water level only
MW-8BR
water level only
MW-8S
X
MW-9BR
X
MW-9D
X
MW-9S
X
MW-10
X
MW-11
MW-11D
MW-13BR
MW-13D
MW-14BR
MW-15A
X
MW-15BR
water level only
MW-15BRL
X
MW-15D
X
MW-16A
X
MW-16BR
X
MW-16BRL
X
MW-16BRLL
X
MW-16D
X
MW-17A
X
MW-17BRL
X
Asheville Steam Electric Plant Page 2 of 4 September 28, 2018

MW-18BR
X
MW-18BRL
X
MW-18D
X
MW-19BR
water level only
MW-20A
MW-20BR
X
MW-20BRL
X
MW-21D
X
MW-22BR
X
MW-22D
X
MW-23BR
MW-23DL
MW-23DU
MW-24S
X
MW-25BR
X
MW-25BRL
X
MW-25 S
MW-26BR
X
MW-26BRL
X
MW-26S
P-102
water level only
P-103
PZ-17BRL
X
PZ-17D
X
PZ-17S
X
PZ-19
X
PZ-22
X
Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Asheville Steam Electric Plant Page 3 of 4 September 28, 2018

Asheville Steam Electric Plant Page 4 of 4 September 28, 2018

Revised Belews Creek Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
Regional Office Notes
AB-lBR
AB-lD
AB-1 S
AB-2D
AB-2S
AB-3D
AB-3 S
AB-4BR
Measure all field parameters plus water level, if pH is still high, do
not sample for lab analyses
AB-4BRD
AB-4D
AB-4S
Measure all field parameters plus water level, if pH is still high, do
not sam )le for lab analyses
AB-4SL
AB-4SAP
AB-5D
AB-5 S
AB-5SL
AB-6D
AB-6S
AB-6SL
AB-7D
AB-7S
AB-8D
AB-8S
AB-8SL
AB-9BR
AB-913RD
Measure all field parameters plus water level, if pH is still high, do
not sam le for lab analyses
AB-9D
AB-9S
BG-1D
BG-1 S
X
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
BG-2BRA
BG-2D
X
BG-2S
X
Belews Creek Steam Station Page 1 of 4 September 28, 2018

BG-3D
BG-3S
GWA-10DA
GWA-10S
GWA-11D
GWA-11 S
GWA-12BR
GWA-12D
GWA-12S
GWA-16BR
Measure all field parameters plus water level, if pH is still high, do
not sample for lab analyses
GWA-16DA
GWA-16S
GWA-17D
GWA-17S
GWA-18D
GWA-18SA
GWA-19BR
GWA-19D
GWA-19SA
GWA-lBR
X
Measure all field parameters plus water level, if pH is still high, do
not sample for lab analyses
GWA-lD
X
GWA-1 S
X
GWA-20BR
GWA-20D
GWA-20SA
GWA-21D
GWA-21 S
GWA-22D
GWA-22S
GWA-23D
GWA-23 S
GWA-24BR
GWA-24D
X
GWA-24S
X
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
GWA-25BR
X
GWA-26BR
X
GWA-26D
X
GWA-26S
X
Belews Creek Steam Station Page 2 of 4 September 28, 2018

GWA-27BR
GWA-27D
GWA-27S
GWA-2D
Measure all field parameters plus water level, if pH is still high, do
not sample for lab analyses
GWA-2S
GWA-30D
X
GWA-30S
X
GWA-31 D
GWA-31 S
GWA-32D
GWA-32S
GWA-3D
GWA-3S
Measure water level if not dry; collect all filed parameters if
possible; if there is some water but not enough water for all
samples, please collect samples for boron, sulfate, chloride, TDS
only.
X
X
X
X
X
X
GWA-6D
GWA-6S
GWA-7D
GWA-7SA
GWA-8D
GWA-8S
GWA-9BR
GWA-9D
GWA-9S
MW-104BRA
MW-104D
MW-104S
MW-200BR
MW-200D
x
MW-200S
MW-201BR
MW-201 D
MW-202BR
MW-202D
MW-202S
MW-203BR
MW-203D
MW-203 S
MW-204D
MW-204S
Belews Creek Steam Station Page 3 of 4 September 28, 2018

MW-3 X
EX-OB-I
EX-OB-2
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Belews Creek Steam Station Page 4 of 4 September 28, 2018

Revised Buck Combined Cycle Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sample for
Sampled
Radionuclides
Regional Office Notes
M
AB -ID
AB-1 OBR
Monitor barium, boron, sulfate and vanadium
(increasing).
Monitor TDS concentrations (increasing).
AB-1 OBRL
Water quality continues to be an issue (elevated pH
indicative of grout contamination). Recommend
additional development prior to next sampling event.
AB-1 OD
Monitor boron concentrations (increasing).
AB-10S
Monitor chromium concentrations (significant
increase last sampling event).
AB-2BR
Sample to be analyzed for total boron and sulfate
onl .
AB-2D
X
AB-2S
X
AB-2SL
X
A13-3D
Monitor manganese concentrations (increasing).
A13-3S
Monitor arsenic, barium, iron, and manganese
concentrations (increasing).
Water quality continues to be an issue (elevated pH).
AB-4BRL
Recommend additional development prior to next
sampling event.
AB-4BRU
AB-4S
Monitor arsenic and manganese concentrations
(increasing).
Monitor iron and manganese concentrations
AB-4SL
(significantly increased during last event compared to
historical data).
Volume has been insufficient to collect sample since
AB-SBRU
X
2015. Continue to monitor water level during each
sampling event and if volume is sufficient for
sampling then collect the sample accordingly.
AB-5S
X
Monitor boron and iron concentrations (increasing).
AB-5SL
X
AB-6BRU
AB-7BRU
AB-7S
MRO is aware of the labeling inconsistency.
AB-8BRU
Please label the well correctly in the field to avoid
future discrepancies and sample accordingly.
AB-8S
Monitor arsenic and boron concentrations
(increasing).
Buck Combined Cycle Station Page 1 of 5 September 28, 2018

Wells to be
Sample for
Sampled
Radionuclides
Regional Office Notes
_ _[_x1
Note: AB-9BR has been abandoned thus removed
from the IMP. AB-9BRA was installed as
AB-9BRA
X
replacement well.
Monitor total radium concentrations (increasing).
Note: AB-9BRU has been abandoned thus removed
AB-9BRUA
X
from the IMP. AB-9BRUA was installed as
replacement well.
Water quality continues to be an issue (turbidity).
AB-9S
X
Recommend additional development prior to next
sampling,event.
AS-113
Monitor boron concentrations (increasing).
AS-1 S
Monitor nickel concentrations (increasing).
AS-2D
AS-3D
AS-3S
Monitor iron and manganese concentrations
(significantly increased during last sampling, event).
Note: BG-1BR has been abandoned thus removed
BG-1BRA
X
from the IMP. BG-1BRA was installed as
replacement well.
BG-1 S
X
Note: BG-11) has been abandoned thus removed from
the IMP. BG-lDA was installed as replacement well.
BG-1DA
X
Water quality still an issue (appears to be grout
contaminated). Recommend additional development
prior to next sampling event.
BG-2D
X
BG-2S
X
BG-3BRU
X
Monitor total radium concentrations (increasing).
BG-3 S
X
GWA-10D
GWA-10S
GWA-11D
GWA-11 S
GWA-12BRU
X
GWA-12S
X
GWA-13D
Monitor iron and TDS concentrations (increasing).
GWA-13SR
Volume has been insufficient to collect sample.
GWA-14BR
X
Continue to monitor water level during each sampling
event and if volume is sufficient for sampling then
collect the sample accordingly.
Buck Combined Cycle Station Page 2 of 5 September 28, 2018

Wells to be
Sampled
Sample for
Radionuclides
l
Regional Office Notes
GWA-14D
Sample to be analyzed for total boron and sulfate
only.
GWA-14S
X
GWA-15BR
X
Water quality continues to be an issue (elevated pH).
Recommend additional development prior to next
sampling event.
GWA-15D
X
Monitor total radium concentrations (increasing).
GWA-15S
X
GWA-16BR
X
GWA-16D
X
GWA-16S
X
GWA-17S
GWA-18DA
X
Note: GWA-18D has been abandoned thus removed
from the IMP. GWA-18DA was installed as
replacement well.
Per meeting on 8/30/2018, MRO and Duke Energy
agreed to redevelop well prior to next sampling event.
We will review results of next sampling event to
determine if reinstallation is necessary.
GWA-18S
X
GWA-19D
X
GWA-19S
X
GWA-ID
X
GWA-IS
X
Monitor chromium concentrations (increasing).
GWA-20D
X
GWA-20S
X
Monitor cobalt, iron, and manganese concentrations
(significantly increased during last sampling event as
com ared to historical data .
GWA-22D
X
GWA-2BRA
X
Note: GWA-2BR has been abandoned thus removed
from the I1VIP. GWA-2BRA was installed as
replacement well.
GWA-2BRU
X
Monitor total radium concentrations (increasing).
GWA-2S
X
GWA-3BR
X
GWA-3BRU
X
Monitor total radium concentrations (increasing).
GWA-3S
X
GWA-4D
X
GWA-4S
X
Monitor TDS concentrations (increasing).
GWA-SBRU
X
Monitor boron concentrations (increasing).
GWA-5 S
X
GWA-6BR
X
Buck Combined Cycle Station Page 3 of 5 September 28, 2018

Wells to be
Sample for
Sampled
Radionuclides
Regional Office Notes
(X)
Monitor sulfate and TDS concentrations (increasing).
This location warrants delineation. In meeting on
GWA-6BRL
X
8/30/2018, MRO and Duke Energy discussed
installation of a new bedrock well (closer to the
GWA-12 cluster) for purposes of horizontal and
vertical delineation. Please update MRO on status.
GWA-6BRU
X
Volume has been insufficient to collect sample since
GWA-6S
X
2016. Continue to monitor water level during each
sampling event and if volume is sufficient for
sampling then collect the sample accordingly.
GWA-7D
X
GWA-7S
X
GWA-8D
Note: GWA-9BR has been abandoned thus removed
from the IMP. GWA-9BRA was installed as
replacement well.
GWA-9BRA
X
Water quality continues to be an issue (elevated pH).
Recommend additional development prior to next
Sampling event.
GWA-9D
X
Monitor manganese concentrations (increasing).
GWA-9S
X
Monitor manganese concentrations (increasing).
MW-10D
MW-11BR
X
MW-11BRL
X
Monitor manganese concentrations (increasing).
Water quality continues to be an issue (turbidity).
MW-11D
X
Recommend additional development prior to next
sampling event.
MW-1 l S
X
MW-12D
Water quality continues to be an issue (turbidity).
MW-12S
Recommend additional development prior to next
sampling event.
MW-13D
MW-ID
MW-1 S
Monitor boron concentrations (increasing).
MW-3D
X
MW-3S
X
MW-4D
Monitor boron concentrations (increasing).
MW-4S
MW-51)
Monitor boron concentrations (increasing).
MW-5S
Buck Combined Cycle Station Page 4 of 5 September 28, 2018

Wells to be
Sample for
Sampled
Radionuclides
Regional Office Notes
MW-6BR
X
MW-6D
X
MW-6S
X
Monitor manganese concentrations (increasing).
MW-7D
MW-7S
Note: MW-8BR has been abandoned thus removed
from the IMP. MW-8BRA was installed as
replacement well.
MW-8BRA
X
Monitor sulfate and TDS concentrations (increasing).
Per meeting on 8/30/2018, MRO and Duke Energy
agreed to redevelop well prior to next sampling event.
We will review results of next sampling event to
determine if reinstallation is necess
MW-8D
X
MW-8S
X
MW-9D
X
MW-9S
X
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Buck Combined Cycle Station Page 5 of 5 September 28, 2018

Revised Cape Fear Steam Electric Plant Interim Monitoring_ Plan — Groundwater Onli
Wells to be
Sampled
Sample for
Radionuclides
(X
Regional Office Notes
ABMW-1
X
ABMW-lBR
X
ABMW-1 S
X
ABMW-2SL
ABMW-2SU
_
ABMW-3
X
ABMW-3BR
ABMW-3 SR
X
ABMW-4
X
ABMW-4S
X
ABMW-5BR
ABMW-5S
BGMW-4
X
BGTMW-4
X
CMW-01
X
CMW-02
CMW-03
X
CMW-5R
CMW-06
X
CMW-07
X
CMW-08
X
CTMW-01
X
CTMW-02
CTMW-07
CTMW-08
X
MW-10
X
MW-10BR
X
MW-10BRL
MW-10D
MW-11
X
MW-12
X
MW-12BR
MW-13
MW-15BR
X
MW-15SL
X
MW-15SU
X
MW-16BR
X
Cape Fear Steam Electric Plant Page 1 of 3 September 28, 2018

MW-16S
X
MW-17BR
MW-17SL
X
MW-17SU
X
MW-18S
X
MW-19S
MW-20BR
MW-20S
MW-21BR
MW-21 SL
X
MW-21 SU
X
MW-22BR
MW-22S
MW-23BR
MW-23D
X
MW-23S
X
MW-24BR
X
MW-24S
X
MW-5BRR
MW-6BR
X
MW-9
X
MW-9BR
X
PZ-1
PZ-10
PZ-2
PZ-3D
PZ-3S
PZ-4
PZ-5
X
PZ-6
PZ-7
PZ-8
Cape Fear Steam Electric Plant Page 2 of 3 September 28, 2018

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Ma nesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Cape Fear Steam Electric Plant Page 3 of 3 September 28, 2018

Revised James E. Rogers Energy Complex Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
AB-1BROR
Replaced AB-1BRO due to casing damage
AB -ID
AB -IS
AB-2BRO
AB-2D
AB-2S
AB-3BRUA
AB-3I
AB-3 S
X
AB-3 SLA
X
AB-4BR
AB-4D
AB-4S
X
AB-4SL
X
AB-5BR
AB-5BRU
AB-5 S
X
AB-6BR
AB-6D
AB-6S
X
AS-1D
AS-1 SB
AS-2BR
AS-2D
X
AS-2S
X
AS-3BRU
AS-4D
AS-4S
AS-5BR
AS-5BRU
AS-5S
AS-6BRA
AS-6D
AS-6S
AS-7BRA
AS-7D
AS-7S
X
James E. Rogers Energy Complex Page 1 of 6 September 28, 2018

AS-8D
AS-8S
BG 1-BRA
BG-1D
X
BG-1 S
X
BG-2D
Water level only
CCPMW-1D
X
CCPMW-1 S
X
CCPMW-2D
Water level only
CCPMW-2S
Water level only
CCPMW-3D
Water level only
CCPMW-3S
Water level only
CCPMW-4
Water level only
CCPMW-5
Water level only
CCPMW-6D
Water level only
Water level only
CCPMW-6S
CCPTW-lD
Water level only
CCPTW-1 S
Water level only
CCPTW-2
Water level only
CLMW-1
X
CLMW-2
CLMW-3D
X
CLMW-3S
X
CLMW-5D
CLMW-5S
CLMW-6
CLP-1
Water level only
CLP-2
Water level only
CLP-3
Water level only
CLP-4
Water level only
GWA-10D
GWA-10S
GWA-11BRU
X
GWA-11 S
X
GWA-12BRU
GWA-12S
GWA-13BR
GWA-14BR
GWA-14D
GWA-14S
GWA-1BRU
James E. Rogers Energy Complex Page 2 of 6 September 28, 2018

GWA-20BR
X
GWA-20D
X
GWA-20S
X
GWA-21 BR
X
GWA-21 BRU
X
GWA-21 S
X
GWA-22BRU
GWA-22S
X
GWA-23D
GWA-24BR
GWA-24D
GWA-24S
GWA-25 S
GWA-25D
Water level only
GWA-26S
GWA-26D
Water level only
GWA-27BR
X
GWA-27D-A
X
GWA-28BR
GWA-28BRU
GWA-28S
GWA-29BRA
GWA-29D
X
GWA-2BR
X
GWA-2BRU
X
GWA-2S
X
GWA-30BR
GWA-30BRU
Water level only
GWA-30S
GWA-31 BR -A
GWA-31D
GWA-32D
GWA-32BR
Water level only
GWA-33BR
GWA-33D
GWA-33S
GWA-34S
GWA-35D
GWA-35S
GWA-36D
X
GWA-36S
X
James E. Rogers Energy Complex Page 3 of 6 September 28, 2018

GWA-37D
GWA-37S
GWA-38D
GWA-38S
GWA-39S
Water level only
GWA-3D
X
GWA-40S
Water level only
GWA-42S
Water level only
GWA-43D
GWA-43 S
GWA-44BR
GWA-44D
GWA-44S
GWA-45D
Water level only
GWA-45 S
GWA-46D
GWA-47D
GWA-48BR
_
Water level only
GWA-4BR
GWA-4D
X
GWA-4S
X
GWA-51D
GWA-54D
GWA-54BRO
GWA-54S
GWA-56D
GWA-56S
GWA-5BRU
GWA-5 S
GWA-6S
GWA-6D
Water level only
MW-10D
MW-10S
MW-11BRO
Redevelop. Sample for boron only.
MW-11DA
MW-11 S
X
MW-20D
MW-20DR
MW-21BR
MW-21D
MW-22BR
James E. Rogers Energy Complex Page 4 of 6 September 28, 2018

MW-22DR
MW-23D
MW-23DR
MW-23S
MW-24D
X
MW-24DR
X
MW-25DR
MW-2D-A
MW-30D
X
MW-30DA
X
MW-30S
X
MW-32BR
X
MW-32D
X
MW-32S
X
MW-34S
MW-34BRU
MW-36BRU
MW-36S
MW-38BR
X
MW-38D
X
MW-38S
X
MW-40BRU
MW-40S
MW-42DA
MW-42S
MW-8D
MW-8S
X
U54D
U5-1 S
U5-2BR
U5-2D
X
U5-2S-SL-A
X
U5-4BRA
U5-4D
U5-4S
U5-5BR
U5-5D
X
U5-6D
U5-6S
U5-8BR
U5-8D
James E. Rogers Energy Complex Page 5 of 6 September 28, 2018

U5-8S
CCR12-S
CCR-12D
CCR-13D
CCR-15D
CCR-IB-1 S
CCR-IB-11)
CCR-IB-3S
CCR-IB-3D
CCR-U5-4S
Sample 1" Quarter 2018 only
CCR-U5-4D
Sample V Quarter 2018 only
CCR-7S
CCR-7D
AB-3-MA15
Pump test well.
AB-3-LA15
Pump test well.
AB-4-UA15
Pump test well.
AB-4-LA15
Pump test well.
CCR-7S
CCR-7D
CCR-8D
CCR-U5-3D
CCR-U5-3S
CCR-U5-4BR
AS7I
IB-6S
IB-6D
IB-7S
IB-7D
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Iron
Nickel
Carbon
Antimony
Calcium
Strontium
Total Combined
Potassium
Uranium
Arsenic
Chloride
Lead
Sulfate
Total Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
Total Dissolved
Zinc
Solids
James E. Rogers Energy Complex Page 6 of 6 September 28, 2018

Revised Dan River Combined C cle Station Interim Monitoring Plan — Groundwater Only
Sample for
Wells to be Sampled Radionuclides
(X)
BG-1 DA X
Regional Office Notes
_
Measure water level if not dry; collect all filed
parameters if possible; if there is some water but
not enough water for all samples, please collect
samples for boron, sulfate, chloride, TDS only.
BG-10D
X
BG-10S
X
BG-10BR
X
BG-5D
BG-5S
GWA-10D
GWA-12D
GWA-12S
GWA-14D
GWA-14S
GWA-15D
GWA-16D
GWA-16S
GWA-17D
GWA-20D
GWA-20S
GWA-4D
GWA-4S
GWA-5BR
GWA-SBRD
GWA-6D
X
GWA-6S
X
GWA-7D
GWA-7S
GWA-8BR
GWA-8D
GWA-8S
GWA-9D
X
GWA-9S
X
MW-12
X
MW-12D
X
MW-21D
X
MW-21 S
MW-22BR
Dan River Combined Cycle Station Page 1 of 2 September 28, 2018

MW-22D
X
MW-22S
X
MW-23BR
MW-23D
MW-317BR
MW-317BRL
Minimum Parameters to be Analvzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Dan River Combined Cycle Station Page 2 of 2 September 28, 2018

Revised H. F. Lee Energv Complex Interim Monitoring Plan — Groundwater Only
Wells to be Sample for
Sampled Radionuclides
M
ABMW-1
ABMW-1 S X
AMW-11BC
AMW-11 S
X
AMW-12BC
AMW-12S
AMW-13BC
AMW-13S
AMW-14BC
AMW-14S
AMW-15BC
AMW-15S
AMW-16BC
AMW-17BC
AMW-17S
AMW-18S
X
AMW-6RBC
AMW-9BC
AMW-19S
AMW-19BC
AMW-20S
AMW-20BC
AMW-21 S
AMW-21BC
AMW-22S .
AMW-22BC
AMW-23 S
AMW-23BC
BGMW-10
BGMW-9
BW-1
CCR-100S
X
CMW-10
CMW-5
CMW-6R
CMW-7
CMW-8
H. F. Lee Energy Complex Page 1 of 3 September 28, 2018

CTMW-1
CW-1
CW-2
CW-3
CW-4
DMW-1
DMW-2
DMW-3
IABMW-1
IABMW-1 S
X
IABMW-2S
IABMW-3
IABMW-3S
X
IMW-04BC
IMW-05BC
IMW-1BC
IMW-1 S
X
IMW-2BC
IMW-3BC
IMW-3S
X
IMW-4S
X
IMW-5S
X
LLMW-1
LLMW-1 S
LLMW-2
LLMW-2S
MW-1
MW-2
MW-3
X
SMW-3
SMW-4
SMW-5
IMW-6S
IMW-7S
H. F. Lee Energy Complex Page 2 of 3 September 28, 2018

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Sodium
Thallium
Total Organic
g
Carbon
Alkalinity
y
Hexavalent
Cadmium
Chromium
Molybdenum
Total
Antimony
Calcium Iron
Nickel
Strontium
Combined
_.
Uranium
Total
Arsenic
Chloride Lead
Potassium
Sulfate
Suspended
+
Sulfide
Solids
Vanadium
Barium
Chromium
Magnesium
Radium 226
Total
Beryllium
Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
H. F. Lee Energy Complex Page 3 of 3 September 28, 2018

Revised Marshall Steam Station Interim Monitorin Plan — Groundwater Onl
Wells to be Sampled
Sample for
Radionuclides
[ X)
Regional Office Notes
AB-10BR
AB-1 OD
AB-10S
AB-1 OSL
Monitor boron concentrations (increasing).
AB=11D
AB-11 S
AB-12BR
X
AB-12D
X
AB-12S
X
Monitor boron concentrations (increasing).
AB-12SL
X
AB-13D
AB-13S
AB-14D
Monitor boron concentrations (increasing).
AB-14DU
AB-14S
AB-15BR
AB-15D
AB-15S
AB-15SL
AB-16D
AB-16DU
AB-16S
AB-17D
AB-17S
AB-18D
Monitor boron, iron, manganese, sulfate, and TDS
concentrations (increasing).
AB-18DU
AB-18S
AB-1BRLL
X
AB-1BRL
X
Monitor boron and total radium concentrations
(increasing).
Duke proposed additional well installation for
delineation purposes.
AB-113R
X
Monitor boron, iron, manganese, TDS, and total
radium concentrations (increasing).
AB-lD
X
Monitor boron, TDS, and total radium
.
concentrations (increasing).
AB-1 S
X
Monitor total radium concentrations (increasing).
Marshall Steam Station Page 1 of 5 September 28, 2018

Sample for
Wells to be Sampled
Radionuclides
Regional Office Notes
(X)
AB-20D
AB-20S
_
Monitor boron concentrations (increasing).
AB-21 D
AB-21 S
Monitor arsenic, boron, chloride, and TDS
concentrations increasin .
AB-2D
X
Monitor total radium concentrations (increasing).
AB-2S
X
Monitor total radium concentrations (increasing).
AB-3D
AB-3S
AB-4D
AB-4S
Monitor selenium concentrations (significant
increase last event compared to historical data),
AB-4SL
AB-5BR
X
Monitor sulfate and TDS concentrations
(increasing).
AD-5D
X
AB-5DU
X
AB-5 S
X
AB-613RL
Monitor TDS concentrations (increasing).
Note: AB-6BR has been abandoned and thus
removed from the IMP. AB-6BRA was installed
as replacement well.
AB-6BRA
Water quality remains an issue (elevated pH).
Recommend additional well development prior to
next sampling event.
AB-6D
AB-6S
AB-7D
AB-7DU
AB-7S
AB-8D
AB-8DU
AB-8S
AB-9BR
AB-9D
AB-9S
AL-1BR
X
Monitor boron and TDS concentrations
L7 AL -ID
F:i
(increasing).
Marshall Steam Station Page 2 of 5 September 28, 2018

Wells to be Sampled
Sample for
Radionuclides
Regional Office Notes
AL -IS
X
AL-2BR
Monitor boron, chromium, sulfate, and TDS
concentrations (increasing).
AL-2BRL
AL-2BRLL
Duke proposed additional well installation for
delineation purposes.
AL-2D
AL-2S
AL-3BR
Water quality remains an issue (elevated pH).
Recommend additional well development prior to
next sampling event.
AL-3D
Monitor boron and chromium concentrations
increasin .
AL-3 S
AL-4BRL
Elevated pH. Recommend additional well
development prior to next sampling event.
AL-4BR
Monitor boron, sulfate and TDS concentrations
(increasing).
AL-4D
BG-1BRA
X
Note: BG-lBR has been abandoned and thus
removed from the IMP. BG-1BRA was installed
as replacement well.
BG-lD
X
BG-1 S
X
BG-2BR
X
BG-2S
X
BG-3BR
X
BG-3D
X
BG-3S
X
GWA-lBR
X
GWA-lD
X
GWA-1 S
X
GWA-2DA
Note: GWA-2D has been abandoned and thus
removed from the IMP. GWA-2DA was installed
as replacement well.
Need to discuss potential replacement.
GWA-2S
GWA-3D
GWA-3 S
Marshall Steam Station Page 3 of 5 September 28, 2018

Wells to be Sampled
GWA-4D
GWA-4S
Sample for
Radionuclides
A)
Regional Office Notes
GWA-5D
GWA-5S
GWA-6D
X
GWA-6S
X
GWA-7D
GWA-7S
GWA-8D
GWA-8S
Monitor chromium concentrations (increasing).
GWA-9BR
GWA-10D
GWA-10S
Monitor boron concentrations (slight increase).
GWA-11BR
X
GWA-11D
X
GWA-11 S
X
Sample to be analyzed for total boron and sulfate
only.
Sample to be analyzed for total boron and sulfate
only.
GWA-12BR
X
GWA-12D
GWA-12S
X
GWA-13DA
GWA-13S
GWA-14D
GWA-14S
GWA-15S
X
Monitor boron concentrations (increasing).
GWA-15D
X
MS-8
MS-10
X
MS-11
MS-13
MW-1
MW-10D
X
MW-10S
X
MW-11D
MW-1 lS
MW-12D
MW-12S
MW-13D
Marshall Steam Station Page 4 of 5 September 28, 2018

Sample for
Wells to be Sampled Radionuclides
_ x
MW-13S
MW-14BR X
MW-14D X
MW-14S X
Regional Office Notes
Monitor boron and TDS concentrations
(increasing).
Monitor cobalt concentrations (increasing).
Monitor chromium, iron, and TDS concentrations
increas'
MW-2
MW-3
MW-4
X
MW-4D
X
MW-5
MW-61)
X
Monitor boron concentrations (increasing).
MW-6S
X
MW-7
Water level only
MW-71)
X
Monitor boron concentrations (increasing).
MW-7S
X
MW-8D
X
Monitor TDS concentrations (increasing).
. MW-8S
X
Monitor TDS concentrations (increasing).
MW-9D
X
Monitor boron concentrations (increasing).
MW-9S
X
Monitor TDS concentrations (increasing).
OB-1 (Dry Ash Basin)
Monitor iron concentrations (significant increase).
OB-1 (Dry Ash Landfill)
Water level only
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Marshall Steam Station Page 5 of 5 September 28, 2018

Revised Ma\ o Steam Electric Plant Interim Monitoring Plan — Groundwater Only
Sample for
Wells to be Sampled Radionuclides
(X)
Regional Office Notes
ABMW-1 X
ABMW-2
ABMW-2BR
ABMW-2BRL
ABMW-3
ABMW-3S
ABMW-4X
X
Well was replaced due to storm runoff damage.
ABMW-4 was abandoned.
ABMW-4BR
ABMW-4D
BG-1
X
BG-2
X
CW-1
CW-lD
CW-2
X
CW-2D
X
CW-3
CW-4
CW-5
CW-6
X
MW-l0BR
X
MW-11BR
water level only
MW-12D
X
MW-12S
X
MW-13BR
MW-14BR
MW-15BR
water level only
MW-16BR
X
MW-16D
X
MW-16S
MW-18D
MW-18BR
MW-19D
MW-19BR
MW-2
MW-3
X
MW-3BR
Mayo Steam Electric Plant Page 1 of 2 September 28, 2018

MW-4
MW-5BR
MW-8BR
MW-9BR
water level only
MW-9BRL
Minimum Parameters to be Anal► zed
Aluminum
Boron
Copper
Meran
Selenium
Thallium
Total Organic
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Total
Beryllium
Cobalt Manganese
Radium 228
Dissolved
Zinc
Solids
Mayo Steam Electric Plant Page 2 of 2 September 28, 2018

Revised L.V. Sutton Enerzy Complex Interim Monitorin Plan — Groundwater Onl
Sample for
Wells to be Sampled Radionuclides
(x)
Regional Office Notes
_
_
AW-IC
AW-2C
AW-2D
AW-3C
X
AW-4C
X
AW-5C
AW-5D
AW-6R-D
AW-6R-E
AW-7R-D
AW-08C
AW-09C
AW-09D
MW-05C
X
MW-05CD
X
MW-05D
X
MW-05R-E
MW-7C
MW-8
X
MW-8B
X
MW-8D
X
MW-8E
X
MW-11
MW-12R
MW-16D
MW-19
MW-20
MW-20D
MW-21C
MW-22B
MW-22C
MW-23B
MW-23C
MW-23D
X
MW-23E
X
MW-24R-B
MW-24R-C
MW-27B
MW-27C
X
L.V. Sutton Energy Complex Page 1 of 2 September 28, 2018

MW-28B
MW-28C
MW-31R-C
X
MW-32C
X
MW-33C
X
MW-36C
X
MW-37B
X
MW-37C
X
MW-37CD
X
MW-37D
X
MW-37E
X
MW-38B
MW-38C
X
MW-38D
X
MW-39B
MW-39C
X
MW-39D
X
MW-40B
MW-40C
MW-40D
MW-41B
X
MW-41 C
X
MW-41D
X
MW-41 E
SMW-01 C
SMW-02C
SMW-03C
SMW-04C
SMW-5C
SMW-06C
SMW-06D
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Nickel
Strontium
Carbon
Total Combined
Antimony
Calcium
Iron
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
Total Suspended
Solids
Barium
Chromium
Magnesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
Total DissolvedSolids
Zinc
L.V. Sutton Energy Complex Page 2 of 2 September 28, 2018

Revised Riverbend Steam Station Interim Monitoring Plan — Groundwater Only
Wells to be
Sampled
_
AB-1D
Sample for
Radionuclides
(X)
Regional Office Notes
Measure all field parameters plus water level, if pH still high,
not sample for lab analyses.
AB -IS
Not sample. Please evaluate whether the well needs to be redeveloped
or replaced.
AB-2D
AB-2S
AB-8D
AB-8S
BG-1DA
BG-1 S
BG-2BR
BG-2D
BG-2S
BG-3D
BG-3S
BG-4BR
X
Not Sample. Please evaluate whether this well should be replaced
because the well has not been sample since 5/23/2017 due to high pH
BG-4D
X
BG-4S
X
BG-5BR
BG-5D
GWA-10BRU
Field parameters plus water level, if pH still high, not sample for lab
analyses.
GWA-10S
GWA-11D
GWA-11 S
GWA-12D
X
GWA-12S
X
GWA-13D
GWA-13S
GWA-14D
GWA-14S
GWA-15D
GWA-15S
X
GWA-1BRU
GWA-1 S
GWA-20BR
GWA-20DA
Riverbend Steam Station Page 1 of 3 September 28, 2018

GWA-20S
GWA-21BR
GWA-21D
GWA-21 S
GWA-22BR-A
X
GWA-22D
X
GWA-22S
X
GWA-23BR
Not Sample if pH is still high, but. please evaluate whether this well
should be replaced.
GWA-23DA
GWA-23S
GWA-2BR
X
GWA-2BRU
X
GWA-2S
X
GWA-3BR
GWA-3D
GWA-3SA
GWA-4BR
GWA-4D
X
GWA-4S
X
GWA-5D
GWA-5S
GWA-6D
X
GWA-6S
X
GWA-7BR
GWA-7D
GWA-7S
GWA-8D
X
GWA-8S
X
GWA-9BR
X
GWA-9D
X
GWA-9S
X
MW-10
X
MW-11DR
MW-11 SR
MW-13
MW-14
X
MW-15
MW-15BR
MW-15DA
MW-ID
MW-1 S
Riverbend Steam Station Page 2 of 3 September 28, 2018

Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
MercuIN
Molybdenum
I Selenium
Sodium
Thallium
Alkalinity
Cadmium
Hexavalent
Total Organic
Chromium
i
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Vanadium_
Barium
Chromium
Magnesium
Radium 226
Sulfide
Total
Beryllium Cobalt
Manganese
Radium 228
Dissolved
Zinc
Solids
Riverbend Steam Station Page 3 of 3 September 28, 2018

Revised Roxboro Steam Electric Plant Interim Monitorin Plan — Groundwater Onl
Wells to be
Sampled
Sample for
Radionuclides
(X)
Regional Office Notes
water level only
ABMW-1
X
ABMW-lBR
X
X
ABMW-2
water level only
ABMW-2BR
X
ABMW-3
ABMW-3BR
ABMW-3BRL
Abandoned as part of the WW redirect (leachate
work)
Abandoned as part of the W W redirect (leachate
work
ABMW-5
X
ABMW-5D
X
ABMW-6
ABMW-6BR
ABMW-7
water level only
ABMW-7BR
ABMW-7BRL
BG-1
X
BG-lBR
X
BG-1BRL
water level only
BG-1BRLR
X
BG-2BR
X
CCR-113D
Recently installed well for CCR program adds a
downgradient data point
CCR- 113BR
Recently installed well for CCR program adds a
downgradient data point
CW-1
CW-2
X
CW-2D
X
CW-3
CW-3D
CW-4
CW-5
X
GMW-10
GMW-11
GMW-6
GMW-7
X
Roxboro Steam Electric Plant Page 1 of 3 September 28, 2018

GMW-8R
Well replaced, GWM-8 was abandoned
GMW-9
MW-lBR
MW-2BR
MW-3BR
X
MW-4BR
MW-4BRL
water level only
MW-5BR
X
MW-5D
X
MW-6BR
X
MW-6D
X
MW-7BR
MW-8BR
MW-9BR
X
MW-10BR
X
MW-1 lBR
X
MW-11D
X
MW-12BR
MW-13BR
X
MW-14BR
X
MW-15BR
X
MW-15D
X
MW-16BR
X
MW-17BR
X
MW-18BR
X
MW-18D
X
MW-19BRL
X
MW-2
X
MW-20BRL
MW-21BRLR
Replaced, MW-21BRLR was abandoned
MW-22BR
MW-22D
MW-23BR
water level only
MW-23BRR
MW-24BR
MW-25BR
MW-26BR
MW-27BR
MW-28BR
MW-29BR
MW-30BR
Roxboro Steam Electric Plant Page 2 of 3 September 28, 2018

MW-31BR
MW-32BR
MW-33BR
GPMW-1 S
GPMW-ID
GPMW-1BR
GPMW-2D
GPMW-2BR
GPMW-3D
GPMW-3BR
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Ma esium
Radium 226
Sulfide
Vanadium
Total
Beryllium Cobalt Manganese
I
Radium 228
Dissolved
Zinc
_I
Solids
Roxboro Steam Electric Plant Page 3 of 3 September 28, 2018

Revised L.V. Sutton Energy Complex Interim Monitoring Plan — Groundwater Only
Wells to be Sampled
Sample for
Radionuclides
- A)
Regional Office Notes
- --
AW-1 C
AW-2C
AW-2D
AW-3C
X
AW-4C
X
AW-5C
AW-5D
AW-6R-D
AW-6R-E
AW-7R-D
AW-08C
AW-09C
AW-09D
MW-05C
X
MW-05CD
X
MW-05D
X
MW-05R-E
MW-7C
MW-8
X
MW-8B
X
MW-8D
X
MW-8E
X
MW-11
MW-12R
MW-16D
MW-19
MW-20
MW-20D
MW-21C
MW-22B
MW-22C
MW-23B
MW-23C
MW-23D
X
MW-23E
X
MW-24R-B
MW-24R-C
MW-27B
MW-27C
X
L.V. Sutton Energy Complex Page 1 of 2 September 28, 2018

MW-28B
MW-28C
MW-31 R-C
X
MW-32C
X
MW-33C
X
MW-36C
X
MW-37B
X
MW-37C
X
MW-37CD
X
MW-37D
X
MW-37E
X
MW-38B
MW-38C
X
MW-38D
X
MW-39B
MW-39C
X
MW-39D
X
MW40B
MW-40C
MW-40D
MW-41B
X
MW-41C
X
MW-41D
X
MW-41 E
SMW-01 C
SMW-02C
SMW-03C
SMW-04C
SMW-5C
SMW-06C
SMW-06D
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercury
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Antimony
Calcium
Iron
Nickel
Strontium
Total Combined
Uranium
Arsenic
Chloride
Lead
Potassium
Sulfate
Total Suspended
Solids
Barium
Chromium
Ma nesium
Radium 226
Sulfide
Vanadium
Beryllium
Cobalt
Manganese
Radium 228
Total Dissolved
Zinc
Solids
L.V. Sutton Energy Complex Page 2 of 2 September 28, 2018

Revised W. H. Weathersnoon Power Plant Interim MonitorinE Plan — Groundwater Only
Wells to be
Sampled
AW-01D
Sample for Radionuclides
��
Regional Office Notes
AW-01I
AW-01 S
AW-02D
AW-02S
AW-03D
AW-03I
AW-03S
BW-01
BW-02S
X
BW-03D
X
BW-03I
X
BW-03S
X
BW-4D
X
BW-4I
X
BW4S
X
CCR-101-BG
CAMA
X
CW-01
CW-02
CW-03
X
MW-01
X
MW-02
X
MW-03
X
MW-04
X
MW-05
X
MW-06
X
MW-07
X
MW-33D
MW-33I
MW-33S
MW-41D
MW-41I
MW-52
X
MW-53D
MW-53I
X
_
MW-54D
MW-55D
W. H. Weatherspoon Power Plant Page 1 of 2 September 28, 2018

MW-55I X
PW-1 (DEP 2)
Minimum Parameters to be Analyzed
Aluminum
Boron
Copper
Mercua
Selenium
Thallium
Alkalinity
Cadmium
Hexavalent
Molybdenum
Sodium
Total Organic
Chromium
Carbon
Total
Antimony
Calcium
Iron
Nickel
Strontium
Combined
Uranium
Total
Arsenic
Chloride
Lead
Potassium
Sulfate
Suspended
Solids
Barium
Chromium
Ma esium
Radium 226
Sulfide
Vanadium
Total
Beryllium Cobalt Manganese Radium 228
Dissolved
Zinc
Solids
W. H. Weatherspoon Power Plant Page 2 of 2 September 28, 2018

J y
Water Resources
Environmental Quality
June 15, 2018
Paul Draovitch
Senior Vice President
Environmental, Health & Safety
Duke Energy
526 South Church Street
Mail Code EC3XP
Charlotte, North Carolina 28202
Subject: Approval of Revised Background Threshold Values
Marshall Steam Station
Dear Mr. Draovitch:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
The North Carolina Department of Environmental Quality's (DEQ) Division of Water Resources
(DWR) has reviewed Duke Energy's calculated revised provisional background threshold values
(PBTVs) for soil and groundwater for the subject facility. DWR reviewed the calculated PBTVs based
on background data provided in the revised Comprehensive Site Assessment (January 2018), using the
Revised Statistical Methods for Developing Reference Background Concentrations for Groundwater
and Soil at Coal Ash Facilities dated May 26, 2017 and additional guidance provided in the December
7, 2017 email from Steve Lanter to Ed Sullivan and John Toepfer. DWR hereby approves all accepted
PBTVs for groundwater and soil as outlined in the attached tables. These accepted PBTVs shall
become the Background Threshold Values (BTVs) for the facility and will serve as a basis for the
proposed remedial alternatives in the upcoming Corrective Action Plans.
Per 15A NCAC 02L .0202(b)(3), where naturally occurring substances exceed the established
groundwater standard, the standard shall be the naturally occurring concentration as determined by the
Director. Therefore, BTVs calculated above the groundwater standards or Interim Maximum
Allowable Concentrations (IMACs) in accordance with the provisions in 15A NCAC 02L .0202 and
accepted by DWR, shall become the enforceable groundwater standard. Otherwise, the enforceable
groundwater standards shall be those listed under 15A NCAC 02L .0202(h) including any effective
IMAC s.
For soils, PBTVs that are calculated above the DEQ Division of Waste Management Inactive
Hazardous Sites Branch's (IHSB) Preliminary Soil Remediation Goals (PSRG) for the protection of
groundwater shall become the BTVs for use in developing an appropriate corrective action strategy.
For compounds that do not have an established PSRG, but do have a groundwater standard (i.e. chloride
and sulfate) pursuant to 15A NCAC 02L .0202, use the calculation provided in the PSRG table to
establish a PSRG if the required site -specific data are available. The PSRG table can found under the
IHSB website at: https:Hdeq.nc.gov/about/divisions/waste-management/Werf md-section/inactive-
hazardous-sites-program.
—'7�' Nothing C=pares ,.,
State of North Carolina I Environmental Quality I Division of Water Resources
Water Quality Regional Operations Section
1636 Mail Service Center I Raleigh, North Carolina 27699-1636
919-707-9129

The attached tables outline DWR's concurrence/non-concurrence with Duke Energy's proposed
calculated PBTVs for groundwater and soil. For all of Duke Energy's calculated PBTVs that are listed
as acceptable, DWR hereby approves those values. For those BTVs not found acceptable, justification
is provided on the attachment and Duke Energy is responsible for providing revised values for review
and approval. For any BTVs found to be unacceptable due to an inadequate dataset, Duke Energy shall
continue to collect data until an adequate dataset is achieved and a valid statistical calculation can be
performed.
Along with the specific comments provided on the attachments, DWR offers the following general
comments with regards to the BTVs:
• Please note that the IHSB's PSRG table was revised in February 2018. With respect to the
constituents being evaluated for the CSA, the following PSRG values have been revised.
o PSRG for Aluminum is currently 110,000 mg/kg.
o PSRG for Chromium is currently 3.8 mg/kg.
o PSRG for Molybdenum is currently 7.1 mg/kg.
o PSRG for Vanadium is currently 350 mg/kg.
DWR recognizes that, as new information is gathered going forward, the approved BTVs may be
refined. Thus, there will be need for a periodic review and recalculation of the BTVs. The timeframes
for the periodic review will be established by DWR at a later date and any revised BTVs will be subject
to approval by DWR's Director.
If you have any questions, please contact Brandy Costner (Mooresville Regional Office) at (704) 663-
1699 or Steve Lanter (Central Office) at [phone].
Sincerely,
Linda Culpepper, Director
Division of Water Resources
Attachments
cc: MRO WQROS Regional Office Supervisor
WQROS Central File Copy

Marshall Steam Station - Groundwater Background Threshold Values (6/15/2018)
Parameter
Reporting
Units
Duke Energy Calculated PBTVs from
CSA Report (January 31, 2018)
15A NCAC
Standard
or IMAC
DWR Concurrence (Acceptable/Not
Acceptable)
Comments
Flow Unit
Flow
Flow Unit
Shallow
Deep
Bedrock
Shallo,*
Deep
Bedrock
H
S.U.
4.6-6A
5.7-6.9
5.6-7.6
6.5-8.5
Acce lablc
Acceptable
Acceptable
Alkalini
mg/L
63
204
108
NE
Acceptable
Acceptable
Acceptable
Aluminum
jtL1.1,
757
128
300
NE
Accc table
Acceptable
Acceptable
juitirnorly
A91L
0.5
OS
0.5
1
Acceptable
Acceptable
Acceptable
Arsenic
jtF1,
0.4
0.6
0.6
10
Acceptable
Acceptable
Accr table
Barium
t 'L
310
127
435
700
Acceplable
Acceptable
Acceptable
Beryllium
lip -I.
0.2
0.1
1 0.2
4
Acceptable
Acceptable
Acceptable
Bicarbonate
mg'L.
63
204
108
NE
Acce table
Acceptable
Acceptable
Boron
L
50
50
50
700
Acceptable
Acceptable
Acceptable
Cadmium
i g L
0.08
0.08
0.08
2
Acceptable
Acceptable
Acceptable
Calcium
m '1
10.7
13.1
15
NE
Acceptable
Acceptable
Acceptable
CaT1113nate
m •IL
5
5
5
NE
Acceptable
Acceptable
Acceptable
Ebb ride
mg/L
5.5
4.7
4.5
250
Acceptable
Acceptable
Acceptable
Chromitim(VI)
L
5.7
3
3.9
NA
Acce table
Acceptable
Acce table
Chnimium
L
16.5
7.6
8.3
10
Acceptable
Acceptable
Acceptable
Cobalt
L
1.2
1.9
2.8
1
Acceptable
Accc table
Acce table
Copper
t 'L
3.8
2.8
4.2
1,000
Acec fable
Acceptable
Acceptable
Iron
L
744
272
792
300
Acceptable
Acceptable
Acce table
Lead
JLVIL
0.3
0.1
0.2
15
A[te Whle
Acceptable
Acceptable
Maemaiuni
nw!L
1.8
14.4
13.2
NE
Acceptable
Acceptable
Acceptable
Mattyaricsc
JIUL
75.3
141
26.6
50
Acceptable
Acceptable
Acceptable
Mercury
"L
0.2
0.2
0.2
1
Acceptable
Acceptable
Acceptable
Methane
jiv L
10
10
10
NE
Acce iable
Acceptable
Acceptable
Molybdenum
PgL
0.5
3.2
3
NE
Acceptable
Acceptable
Acceptable
Nickel
L
9.9
7.5
7.2
100
Acceptable
Acceptable
Acceptable
Nitralc+Nitrite
mg-N/L
2.7
1A
0.4
ll*
Acceptable
Acceptable
Potassium
mv.1
5
7.8
9.8
NE
I Acceptable
-Acceptable
Acceptable
Acceptable
Selenium
VgL
0.5
0.5
0.5
20
Acceptable
Acc table
Acceptable
Removed 10 as an outlier in the shallow
Sodium
m L
9.1
29.2
14
NE
Acce fable
Acceptable
Acceptable
Strontium
t • L
303
665
253
NE
Acc lablr
Acceptable
Acceptable
Sulfate
rML
4.2
17.7
18.4
250
Acceptable
Acceptable
Acceptable
Sulfide
m g IL
0.1
0.1
0.1
NE
Acceptable
Acceptable
Acceptable
TDS
mL/L
140
193
216
500
Acceptable
Acceptable
Acceptable
Thallium
jS L
0.1
0.1
0.1
0.2
Acceptable
Acceptable
Acceptable
Toc,
mvL
1
1
1
NE
Acceptable
Acceptable
Acce.table
Vanadium
L
5.6
3.8
16
0.3
Acceptable
Acceptable
Acceptable
Zinc
PPL
19.2
17
11.9
1,000
Acce sable
Acceptable
Acceptable
Radium (Total)
pCill,
3
2.8
5.7
NE
Accc tabk
Acceptable
Acceptable
Uranium (Total)
A&mL
0.0005
0.0005
0.0005
NE
Acceptable
Acceptable
Acceptable
NA - M1Or Appl�anl!
ND - Not Detected
NE - Not Established
mg/L - milligrams per liter
pCi/L - picocuries per liter
Radium (Total) - Radium-226 and Radium-228 combined
;The I SA NCAC 02L Standard is 10 mg/L for Nitrate and 1 mg/L for Nitrite (added for a total of I l mg/L)
S.U. - Standard Unit
TOC - Total Organic Carbon
TDS - Total Dissolved Solids
µg/mL - micrograms per milliliter
µg/L - micrograms per liter
Uranium (Total) - Uranium-233, Uranium-234, Uranium-236, and Uranium-238 combined
Page 1 of 1

Marshall
Steam Station - Soil
Background Threshold Values (6/15/2018)
Parameter
Reporting
Units
Duke Energy
Calculated PBTVs
from CSA Report
(January 31, 2018)
PSRG Protection of
Groundwater (as of
February 2018)
DWR Concurrence
(Acceptable/Not
Acceptable)
Comments
H
S.U.
4.7-6.1
NA
Acceptable
Aluminum
mwkg
56A37
110,000
Acceptable
Antimony
mg/kg
0.65
0.9
Acceptable
Arsenic
mg/kg
4.697
5.8
Acceptable
Barium
mg/kg
819
580
Acceptable
Beryllium
tn&g
3.9
63
Acceptable
Boron
mg/kg
8.7
45
Acceptable
Normal UTL=10.69
Cadmium
mg/kgmg?kg
0.11
3
Acceptable
Calcium
m k =
1.500
NE
Acceptable
Chloride
mg/kp,
13
NE*
Acceptable
Chromium
mg/kg
32.8
4
Acceptable
Cobalt
mg,kg
53.1
0.9
Acceptable
Copper
LaWkg
180
700
Acceptable
Iron
mg/kgmgikg
78,228
150
Acceptable
Lead
m
82.5
270
Acceptable
Magnesium
mgikg
32,462
NE
Acceptable
Manganese
mg/kg
2,872
65
Acceptable
Mercury
mg/kg
0.1
1
Acceptable
Molybdenum
mg/kg
3.5
7.1
Acceptable
Nickel
mg/kg
18.6
130
Acceptable
Normal UTL=19.55
Nitrate as N)
m
0.56
NE
Acceptable
Potassium
mg/-kgmg/-kg
29,937
NE
Acceptable
Selenium
m
1.77
2.1
Acceptable
Gamma UTL=2.44
Sodium
mg/kg
394
NE
Not Acceptable
Provide rationale on why the maximum concentration was used.
Strontium
mg/kg
7.53
NE
Acceptable
Normal UTL=8.59
Sulfate
mWkg
36
NE*
Acceptable
Thallium
my kg
1.1
0.28
Acceptable
Vanadium
m
210
350
Acceptable
Zinc
mg,-,-kgmg,-,-kg
125
1200
Acceptable
*Constituent has 2L Standard or IMAC. Use calculation in the PSRG table to determine value.
NA - Not applicable (dataset contains zero valid samples)
ND - Non -Detect
NE - Not Established
mg/kg - milligrams per kilogram
S.U. - Standard Unit