IMP Update November 2019 - Compiled

�DUKE
� ENERGY.
November 26, 2019
North Carolina Department of Environmental Quality
Division of Water Resources
Attn: Mr. Rick Bolich
1636 Mail Service Center
Raleigh, NC 27699-1636
Subject: Optimized Interim Monitoring Plans (IMP) — Update
Dear Mr. Bolich:
410 S. Wilmington Street.
Raleigh, NC 27601
Mailing Address
Mail Code NC 15
Raleigh, NC27601
919-546-7863
Duke Energy (Duke) submits updates to the optimized Interim Monitoring Plans and requests approval
from the North Carolina Department of Environmental Quality (DEQ) by end of the yearsuch that sampling
can continue starting January 2020. Duke understands DEQ had questions regarding groundwater
sampling for speciation and dissolved constituents. The purpose of these updates is to remove that
confusion along with modify monitoring well list due to abandonments and/or installs recently completed.
The enclosed Tables 2.1 through 2.14 identify which wells are sampled for which constituents and whether
they are sampled semi-annually or quarterly. Duke will submit Table 3 to DEQ at a later date as our
internal sampling team is finalizing the 2020 schedule. Table 3 will identify what months during a quarter
sampling is to take place along with when the quarterly data update to DEQ will be submitted (end of
month). If you have any questions or need any clarification regarding the information provided, feel free
to contact me at [e-mail] or at 919-546-7863 at your convenience.
Respectfully submit d,
hn Toepfer, P.E.
Lead Engineer, Duke Energy EHS CCP
Waste & Groundwater Programs
cc/att (via email): Mr. Eric Smith and Steve Lanter— DEQ Central Office
Ms. Brandy Costner— Mooresville Regional Office
Ms. Shuying Wang— Winston-Salem Regional Office
Mr. Ted Campbell — Asheville Regional Office
Mr. Eric Rice — Raleigh Regional Office
Mr. Will Hart —Washington Regional Office
Mr. Geoff Kegley —Wilmington Regional Office
Mr. Kent White — Fayetteville Regional Office
Mr. Ed Sullivan and Bryan Moeller - Duke Energy

November 26, 2019
Page 2
Ms. Kathy Webb — SynTerra Corp.
Attachments: Tables 1—Summary of Analytical Parameters for Newly Installed Wells
Table 2.1—Summary of Wells, Frequency & Parameters — Allen
Table 2.1A—Additional Source Area Wells - Allen
Table 2.2—Summary of Wells, Frequency & Parameters —Asheville
Table 2.3 — Summary of Wells, Frequency & Parameters — Belews Creek
Table 2.3A - Additional Source Area Wells — Belews Creek
Table 2.4 — Summary of Wells, Frequency & Parameters — Buck
Table 2.5 — Summary of Wells, Frequency & Parameters — Cape Fear
Table 2.6 — Summary of Wells, Frequency & Parameters — Cliffside
Table 2.6A - Additional Source Area Wells - Cliffside
Table 2.7 — Summary of Wells, Frequency & Parameters — Dan River
Table 2.8 — Summary of Wells, Frequency & Parameters — HF Lee
Table 2.9 — Summary of Wells, Frequency & Parameters — Marshall
Table 2.10 —Summary of Wells, Frequency & Parameters — Mayo
Table 1.10A - Additional Source Area Wells - Mayo
Table 2.11— Summary of Wells, Frequency & Parameters — Riverbend
Table 2.12 — Summary of Wells, Frequency & Parameters — Roxboro
Table 2.12A - Additional Source Area Wells - Roxboro
Table 2.13—Summary of Wells, Frequency & Parameters —Sutton
Table 2.14 — Summary of Wells, Frequency & Parameters — Weatherspoon

TABLE 1
IMP Optimization
Summary of Analytical Parameters for Newly Installed Wells and 1st Semi -Annual Event
(to begin Q1 2020)
For each of Duke Energy's 14 North Carolina facilities, new wells installed as part of the CAMA program will be monitored quarterly.
Samples from these wells will be analyzed for parameters formerly included as part of the 4th Quarter 2018 IMP and additional
constituents analyzed voluntarily. After four quarterly events, the monitoring frequency and/or parameter list for the new wells will be
re-evaluated with NCDEQ and may be reduced and/or optimized. A summary of analytical parameters to include under this criteria is
provided below.
SUMMARY OF ANALYTICAL PARAMETERS FOR NEWLY INSTALLED WELLS
AND 1st SEMI-ANNUAL SAMPLING EVENT (SITE -WIDE)
Minimum CAMA Parameters per Q4 2018 IMP (22)
Additional Voluntary Parameters (4)
[Total and dissolved^ metals]
Aluminum^
Iron
Lead
Fluoride
Nitrate + Nitrite
Antimony^
Lithium^
Phosphorus, dissolved only^
Arsenic^
Manganese
Barium^
Mercury^
Beryllium"
Molybdenum^
Boron
Nickel^
Cadmium"
Selenium^
Chromium, total^
Strontium^
Chromium, hexavalent
Thallium^
Cobalt^
Vanadium^
Copper
Zinc^
^Dissolved metals will be analyzed
once per year during the 1st semi-
annual sampling event.
^Dissolved metals will be analyzed once per
year during the 1st semi-annual sampling
event.
Additional Water Quality Parameters (13)
Additional Voluntary Field Parameters (7)
Alkalinity (CO3/HCO3)
Sodium, total
Sulfate
Dissolved Oxygen (DO)
Redox Potential (Eh)
Specific Conductance
Calcium, total
Oxidation -Reduction
Potential (ORP)
Chloride
Sulfide
Temperature
Magnesium, total
Total Dissolved Solids (TDS)
pH
Turbidity
Potassium, total
Total Organic Carbon (TOC)
Total Radium
Total Uranium (233+234+236+238)
(226+228)
Total Suspended Solids (TSS)

Table 2.1- Allen
Wells for Quarterly
Monitoring (36)
AB-10BR*/ BRL*
AB-40SS* / D*
AB-41SS* / D*
AB-42AP* / SS* / D*
AB-43AP* / SS* / D*
AB-44AP* / SS* / D*
CCR-26S*
CP-3S*/D*
CP-5S*/D*
CP-6S*/D*
GWA-3BRL*
GWA-4BRL*
GWA-5BRL*
GWA-6BRL*
GWA-27S* / D*
GWA-28S* / D* / BR*
GWA-29S* / D* / BR*
GWA-30S* / D*
Allen Steam Station - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (123)
AB-04S / D / BR
CP-2S/D
AB-06R
CP-4S/D
AB-09S / D
CP-6BR
AB-10S / D
GWA-01S / D / BR
AB-12S / D
GWA-02S / D
AB-13S / D
GWA-03S / D / BRA
AB-14D / BR
GWA-04S / D / BR
GWA-05S / D / BRA
AB-20S / D
AB-21S / SL / SS / D** / BRL
GWA-06S / DA / BRA
AB-22S / D / BR / BRL
GWA-07S / D
AB-24S / SL / D** / BR
GWA-08S
AB-25S / SL / SS / BRU** / BR**
GWA-09S / D / BR
AB-26S / D
GWA-14S / DA**
AB-29SS
GWA-15S / D
AB-30S
GWA-16S / D
AB-32S / D
GWA-19S / D
AB-33S / SS / D1
GWA-21S / DA / BR
AB-34S / D
GWA-22S / D
AB-35S / PWS / D** / BR
GWA-23S / D
AB-36S / D
GWA-24SA / D / BR
AB-37S / D
GWA-26S / D
AB-38S / SS / D / BR
AB-39S / D
BG-1S / DA / BR
BG-2S / D / 2BRA2
BG-3S / D
BG-4S / D / BR
1st semi-annual
sampling event to be
analyzed for parameters
in Table 1.
CCR-16BR
CCR-26D / BR
CP-1S/D
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (36)
2018 CSA Update COls
Water Quality Parameters
Field Parameters
(Total and dissolvedA metals)
(Total and dissolvedA metals)
Antimony^
----------------------------------
Manganese
------------------------
AluminumA
------------------------------------------
Dissolved Oxygen (DO)
----------------------------
Arsenic^
MolybdenumA
Alkalinity (CO3/HCO3)
Oxidation-Reduction
----------------------------------
Beryl JiUMA
----------------------------------
------------------------
NickelA
------------------------
-------------------------------------------
Calcium
------------------------------------------
Potential (ORP)
------------------------------
Boron A
Selenium^
Chloride
pH
----------------------------------
CadmiumA
------------------------
StrontiumA
-------------------- ----------------------
Fluoride
----------------------------
Redox Potential (Eh)
----------- ------------------------------------------------
Chromium (total)^
----------------------------------
Sulfate
------------------------
------------------------------------------
Magnesium
------------------------------------------
----------------------------
Specific Conductance
----------------------------
Chromium (hexavalent)
----------------------------------
Thallium^
------------------------
Nitrate + Nitrite
------------------------------------------
Temperature
-----------------------------
Coba ItA
Total Dissolved
Potassium
Turbidity
----------------------------------
Iron
Solids (TDS)
------------------------------------------
Sodium
----------------------------
----------------------------------
Lithi UMA
------------------------
Vanadium^
------------------------------------------
Total Organic Carbon (TOC)
----------------------------
A Dissolved metals will be analyzed once per year
during the 1st semi-annual sampling event.
Water Level Only (23)
AB-01R
AB-02/D
AB-05
AB-06A
AB-11D
AB-23S / BRU
AB-27S /D / BR
AB-28S / D
AB-29S / SL / D
AB-30D
AB-31S
GWA-08 D
GWA-17S / D
GWA-18S / D
Comprehensive water level sweeps will
occur semi-annually and will include
wells in Quarterly, Semi -Annual, and
Water Level Only lists.
To Be Replaced
No well replacements planned
at this time
To be Abandoned (1)
GWA-6D
Discontinued Parameters
(10)
Proposed (non -COI)
Constituents to be
Discontinued
Barium
Copper
Lead
Mercury
Nitrate as N
Total Radium (226+228)
Sulfide
Total Suspended Solids (TSS)
Total Uranium
Zinc
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
Cols = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ= North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under
Quarterly for respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the 4th Quarter 2018
IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the new wells will be re-evaluated with
NCDEQ and may be reduced and/or optimized. Replacement wells will not be considered "new wells" and will follow the respective monitoring protocol for the well in which they replace.
** Denotes well was sampled for Boron and Sulfate only in historic versions of the IMP due to elevated pH. Respective well is proposed to remain a Boron- and Sulfate -only sample if
location is proposed to remain in the IMP.
i Well re -development has historically been conducted with favorable results. Recent results indicate pH values are increasing. Further well re -development will be conducted to re-
establish groundwater quality in the monitoring well.
Wells in bold are ash basin wells that may become restricted in 2020 at any time due to stability concerns from decanting/construction activities. Data submittals will
identify any wells that were not sampled as a result.

Table 2.1A - Allen
Allen Steam Station - Additional Source Area Wells
Wells for Quarterly
Monitoring (12)
GP-1S/D
G P-2S/D
G P-3S/D
G P-4S/D
G P-SS/D
G P-6S/D
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (0)
AL Quarterly & Semi -Annual Parameters for Additional Source Area Wells
Additional source area wells will be analyzed for parameters in Table 1.
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ = North Carolina Department of Environmental Quality
+Semi -Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under
Quarterly for respective events.

Table 2.2 - Asheville
Wells for Quarterly Monitoring (32)
CB-6
MW-9D1
CB-7
MW-9BR1
CB-81
M W-16A1
CB-8BR1
MW-16D1
CCR-101BR1
MW-16BR1
CCR-102S1
MW-16BRL1
CCR-102D1
MW-16BRLL1
CCR-103 D
M W-17A1
CCR-103BR
MW-17BRL1
CPA-5D*/BR*
MW-20BR1
CPA-6D*/BR*
MW-20BRL1
EXT-011
EXT-02
EXT-A
GW-21
MW-5D
MW-5BR
M W-8S1
M W-9S1
Asheville Steam Electric Plant - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
- November 2019
Wells for Semi -Annual Monitoringt (57)
AMW-03B1
CCR-105BR
MW-18BRL
AS-5BR**
GW-11
MW-20A
CB-11
GW-11)
MW-24S1
CB-1D1
GW-1BR
MW-25S
CB-3R1
GW-31
MW-25BR
CB-41
GW-41
MW-25BRL
CB-4B1
MW-31)1
MW-26S
CB-5
MW-6S1
MW-26BR1
CB-9
MW-61)1
P-103
CB-9SL
MW-6BR1
PZ-17S1
CB-9BR
MW-101
PZ-17D1
CCR-100SL1
MW-11
PZ-17BRL
CCR-100BR1
MW-11D
PZ-19
CCR-100BRL1
MW-13D
CCR-104D1
MW-13BR
CCR-105D1
MW-15A1
CPA-1D2/BR2
MW-15D1
CPA-21)2/BR2
MW-15BRL1
CPA-3D2/BR2
MW-18D
CPA-4D2/BR2
MW-18BR1
1st semi-annual sampling event to be analyzed for parameters in
Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (36)
Water Quality Parameters
(Total and dissolved^ metals)
IL
Field Parameters
Alkalinity (CO3/HCO3)
Fluoride
Strontium^
Sulfate
Dissolved Oxygen (DO)
Antimony^
Iron
Oxidation -Reduction
Potential (ORP)
Arsenic^
Lithium^
Thallium^
Beryllium^
Magnesium
Total Dissolved Solids (TDS)
pH
Boron
Manganese
Total Organic Carbon (TOC)
Redox Potential (Eh)
Cadmium^
Molybdenum^
Total Radium' (226+228)
Specific Conductance
Calcium
Nickel^
Vanadium^
Temperature
Chloride
Nitrate+Nitrite
Turbidity
Chromium (total)^
Potassium
^Dissolved metals will be analyzed once per
year during the 1st semi-annual sampling
event.
Chromium (hexavalent)
Selenium^
Cobalt^
Sodium
Water Level Only (25)
MW-14BR
CB-1BR/BRL
MW-23DU
CB-2
MW-23DL
CB-81)
MW-23BR
GW-5
AMW-113
MW-7BR
ABMW-11BR
MW-15BR
AMW-2A
MW-19BR
AMW-213
P-102
APZ-30
EXT-D
B-1
MW-8BR
B-1-A
MW-26BRL
B-2
AS-5BRL
Comprehensive water level sweeps will occur semi-
annually and will include wells in Quarterly, Semi -
Annual, and Water level Only lists.
To Be Installed (4)
CPA-5D/BR and CPA-6D/BR planned to be
added as new wells downgradient of the
coal pile in 2019.
To be Abandoned (4)
CPA-2D/BR and CPA-4D/BR are planned
to be abandoned in early 2020.
Discontinued Parameters (2)
Proposed (non -COI) Constituents
to be Discontinued
Nitrate as N
Total Uranium
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ= North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under Quarterly for
respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the 4th
Quarter 2018 IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the new wells will
be re-evaluated with NCDEQ and may be reduced and/or optimized. Replacement wells will not be considered "new wells" and will follow the respective monitoring protocol for
the well in which they replace.
** Denotes well with high pH. If well is on quarterly or semi annual sampling, sampled for Boron and Sulfate only due to elevated pH. Respective well is proposed to remain a
Boron- and Sulfate -only sample if location is proposed to remain in the IMP. However, if the pH improves with redevelopment those wells will be sampled for the full suite of Cols
and water quality parameters proposed herein IF pH is within compliance.
1 Wells to be sampled for total radium, in addition to water quality parameters noted.
Wells in vincinity of coal pile. Samples from these wells will be analyzed for parameters on Table 1.

Table 2.3 - Belews Creek
Belews Creek Steam Station - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
LWells for Quarterly Monitoring (38)
�jj
AB-2BR*
GWA-18SA
AB-4S/SAP/LowerAsh/D/BR/BRD
GWA-19SA/D
AB-6SL
GWA-20SA2/D'
A113-7S
GWA-21S/D
CCR-2S2/D
GWA-27S/D'
CCR-13S*/D*/BR*
LRB-01S/D/BR
EXOB-01
LRB-02S/D/BR
EXOB-02
MW-104BRA*'
GWA-01S
MW-200BR
GWA-10S1
M W-04
GWA-11S/D
Replaced (1)
MW-104BR (replaced by MW-
104BRA)
Wells for Semi -Annual Monitoringt (52)
AB-1BR
GWA-27BR
AB-2Sz/D
GWA-30S/D
AB-3 D
GWA-31S/D
BG-01S2/D
GWA-32S/D
BG-02S/D/BRA
GWA-3S2
BG-03S/D
GWA-6S
GWA-01 D/BR* *
GWA-7SA
GWA-10DA
GWA-8S/D
GWA-16S/DA/BR**
GWA-9BR
GWA-17S
MW-03
GWA-18D
M W-20OS/D
GWA-19BR**
MW-202S/D/BR'
GWA-20BR
MW-204D
GWA-22S/D
1st semi-annual sampling event to
be analyzed for parameters in
Table 1.
GWA-23S/D
GWA-24S2/D/BR
GWA-25BR
GWA-26S/D/BR
bandoned (2)
CP 4BR(10/24/19)
SFMW-4BR (10/24/19)
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (38)
2017 CSA Update COls
Water Quality Parameters
Field Parameters
(Total and dissolved^ metals)
(Total and dissolved^ metals)
Antimony
--------------------------------------
Iron
------------------------------------
Aluminum^
--------------------------------------
Dissolved Oxygen (DO)
----------------------------------------
Arsenic^
Manganese^
Alkalinity (CO3/HCO3)
Oxidation -Reduction Potential
--------------------------------------
Barium^
------------------------------------
Molybdenum^
--------------------------------------
Calcium
(ORP)
--------------------------------------
Beryllium^
--------------------------------------
------------------------------------
Selenium^
------------------------------------
--------------------------------------
Fluoride
--------------------------------------
----------------------------------------
pH
-----------------------------------------
Boro
Strontium^
Lithium^
Redox Potential (Eh)
--------------------------------------
Cadmium^
--------------------------------------
------------------------------------
Sulfate
------------------------------------
--------------------------------------
Magnesium
--------------------------------------
-----------------------------------------
Specific Conductance
-----------------------------------------
Chloride
--------------------------------------
Total Dissolved Solids (TDS)
------------------------------------
Nitrate + Nitrite
--------------------------------------
Temperature
-----------------------------------------
Chromium (total)^
Thallium^
Potassium
Turbidity
--------------------------------------
Chromium (hexavalent)
------------------------------------
Vanadium^
---------- ---- --------------- ---------
Total Radium' (226 + 228)
-----------------------------------------
------------------------------------------
--------------------------------------
Coba ItA
------------------------------------
--------------------------------------
Sodium
--------------------------------------
Ca-
Total Organic Carbon
TotalOrganic
-----------------------------------------
Dissolved metals will be analyzed once per year during the 1st
---- ---T ---
i ---------
-----------------------------------------
semi-annual sampling event.
Total Uranium
-----------------------------------------
(233+234+236+238)
LWaterevel Only (36)
AB-1S/D/BRD3
AB-2BRD3
AB-3S/BR3
AB-4SL
AB-5S/SL/D
AB-6S/D
AB-7D
AB-8S/SL/D
AB-9S/D/BR/BRD
GWA-2S/D
GWA-3 D
GWA-6D
GWA-7D
GWA-9S/D
GWA-17D
MW-104S/D
MW-201D/BR
MW-203S/D/BR
M W-204S
Comprehensive water level sweeps will occur semi-
annually and will include wells in Quarterly, Semi -
Annual, and Water Level Only lists.
Discontinued Parameters (10) 1
I Proposed (non -COI) Constituents to I
be Discontinued
Copper
--------------------------------------------------
Lead
--------------------------------------------------
Mercury
--------------------------------------------------
Methane
--------------------------------------------------
Nickel
--------------------------------------------------
Nitrate as N
--------------------------------------------------
Phosphorus Sulfide
Suspended Solids (TSS)
----------------------Zinc---
--------
= Interim Monitoring Plan
CSA = Comprehensive Site Assessment
Cols = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ= North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under
Quarterly for respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the
4th Quarter 2018 IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the
new wells will be re-evaluated with NCDEQ and may be reduced and/or optimized. Replacement wells will not be considered "new wells" and will follow the respective
monitoring protocol for the well in which they replace.
** Denotes well with high pH. If well is on quarterly or semi annual sampling, sampled for Boron and Sulfate only due to elevated pH. Respective well is proposed to
remain a Boron- and Sulfate -only sample if location is proposed to remain in the IMP. However, if the pH improves with redevelopment those wells will be sampled for the
full suite of Cols and water quality parameters proposed herein IF pH is within compliance.
1 -Wells to be sampled for total radium and total uranium, in addition to water quality parameters noted. If results are less than the Federal MCL, revaluation may indicate
historical exceedances are anomalous and a revision to the routine monitoring plan will be considered. Background well cluster MW-202S/D/BR will also be included in
semiannual sampling of total radium and total uranium for ongoing comparative purposes.
z - Wells have at times been been historically dry (i.e. no available water for sampling). Collect water level and sample if suffcient water for sampling.
3 - Low flow wells (0.02-0.03 gpm drawdown sampling range) with high pH (11.1- 12.6 S.U.)
Wells in bold are ash basin wells that may become restricted in 2020 at any time due to stability concerns from decanting/construction activities. Data submittals will
identify any wells that were not sampled as a result.

Table 2.3A - Belews Creek
Belews Creek Steam Station - Additional Source Area Wells
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Quarterly Monitoring (33) 1i
CCR-FGD-11S/D
GP-11BR
CCR-FGD-12S/D
GP-12BR
CP-1S/D/BR
GP-13S/D/BR
CP-2S/D/BR
CP-3S/D/BR
CP-4S/D
CP-5S/D/BR
CP-6S/D/BR
CP-7S/D/BR
CP-8BR
G P-10S/D/B R
Wells for Semi -Annual Monitoringt (0)
Quarterly & Semi -Annual Parameters for Additional Source Area Wells
Additional source area wells will be analyzed for parameters in Table 1.
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ= North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include
the wells listed under Quarterly for respective events.

Table 2.4 - Buck
Wells for Quarterly
Monitoring (31)
AB-04S
AB-05S
AB-09BRA1
BG-01 DA
CPA-1S*/D*/BR*
CPA-2S*/D*/BR*
CPA-3S*/D*/BR*
CPA-4D*/BR*
CPA-5S*/D*/BR*
CPA-6BR*
GWA-01Sz
GWA-09SA */ DA*/ BRAA*
GWA-10S / D
GWA-14D
GWA-15BR3
GWA-19BR*
M W-01 D4
M W-08 B RA5
MW-11BRL
Buck Steam Station - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (62)
AB-04SL
GWA-18S / DA
AB-05SL
GWA-19S / D
AB-06BRU
GWA-20S2 / D
AB-07S / BRU
GWA-22D
AB-8S6 / BRU
M W-03S / D
AB-09S' / BRUA
M W-04S / D
BG-01S / BRA
MW-5S / D
BG-02S / D
M W-06BR
BG-03S / BRU
MW-07S / D
GWA-01D
MW-08S / D
GWA-02S / BRA / BRU
MW-09S / D
GWA-7S / D
MW-11S / D / BR
GWA-8D
MW-12S / D
GWA-11S / D
MW-13D
GWA-12S / BRU
GWA-13SR2 / D
GWA-14S / D
GWA-15S / D
GWA-16S5 / D/ BR
GWA-17S
1st semi-annual sampling event to be analyzed for
parameters in Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (34)
Water Quality
Parameters (Total and dissolved^ metals)
Field Parameters
Alkalinity (CO3/HCO3)
Chromium (hexavalent)
Phosphorus, dissolved
Potassium
Dissolved Oxygen (DO)
Aluminum^
Cobalt^
Oxidation -Reduction
Potential (CRP)
Antimony^
Fluoride
Selenium^
Arsenic^
Iron
Sodium
pH
Barium^
Lithium^
Strontium^
Redox Potential (Eh)
Boron
Magnesium
Sulfate
Specific Conductance
Calcium
Manganese
Thallium^
Temperature
Chloride
Nickel^
Total Dissolved Solids (TDS)
Turbidity
Chromium (total)^
Nitrate + Nitrite
Vanadium^
Dissolved metals will be analyzed once per year during the 1st semi-annual sampling
event
Water Level Only (7)
AB-04BRU
AB-05 B R U
GWA-06S
GWA-14BR
M W-01S
M W-06 D
M W-06S
Comprehensive water level sweeps
will occur semi-annually and will
include wells in Quarterly, Semi -
Annual and Water Level Only lists.
To Be Replaced (3)
AB-4BRL
BG-1DA
GWA-14D
To be Abandoned (0)
No well abandonments
planned at this time.
Discontinued Parameters
(14)
Proposed (non -COI)
Constituents to be
Discontinued
Beryllium
Cadmium
Copper
Lead
Mercury
Methane
Molybdenum
Nitrate as N
Total Radium (226 + 228)
Sulfide
Total Organic Carbon (TOC)
Total Suspended Solids (TSS)
Total Uranium
Zinc
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ= North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under
Quarterly for respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the
4th Quarter 2018 IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the
new wells will be re-evaluated with NCDEQ and may be reduced and/or optimized. Replacement wells will not be considered "new wells" and will follow the respective
monitoring protocol for the well in which they replace.
1 Quarterly until antimony and chromium have stabilized. 5 Monitor sulfate and TDS closely
Z Monitor chromium closely 6 Monitor barium closely
3 Quarterly due to pH and TDS
7 Monitor turbidity when sampling and if necessary do additional
development to ensure representative samples are being collected.
4 Erratic boron concentration; sample quarterly until stabilized
Wells in bold are ash basin wells that may become restricted in 2020 at any time due to stability concerns from decanting/construction activities. Data submittals will
identify any wells that were not sampled as a result.

Wells for Quarterly
Monitoring (22)
CPBG-1S* / BR*
CP-2S* / BR*
CP-3S* / BR*
CP-4S* / BR*
CP-5S* / BR*
CP-6S* / BR*
CP-7S* / BR*
CP-8S* / BR*
CP-9S* / BR*
CP-10S* / BR*
CP-11S* / BR*
Table 2.5 - Cape Fear
Cape Fear Steam Electric Plant - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (64)
ABMW-01/S/BR
MW-17SU / SL/ BR
ABMW-02SU / SL
MW-21SU / SL / BR
ABMW-03 / SR / BR
MW-22S / BR
ABMW-04 / S
MW-23S / D / BR
ABMW-05S / BR
MW-24S / BR
BGMW-04
MW-25BR / BRL / BRLL
BGTM W-04
PZ-01
CMW-01
PZ-02
CMW-02
PZ-03S / D
CMW-03
PZ-04
CMW-05 R
PZ-05
CMW-06
PZ-06
CMW-07
PZ-08
CMW-08
CTM W-01
CTM W-02
CTM W-07
CTM W-08
MW-06BR
1st semi-annual sampling
event to be analyzed for
parameters in Table 1.
MW-09 / BR
MW-10 / D / BR / BRL
MW-11
MW-12 / BR
MW-15SU / SL / BR
MW-16S / BR
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (35)
Water Quality Parameters
Field Parameters
(Total and dissolved^ metals)
Alkalinity (CO3/HCO3)
Chromium (total)^
Potassium
Dissolved Oxygen (DO)
----------------------------------
Alumin UMA
----------------------------------
Chromium (hexavalent)
------------------------------------------
Selenium^
--------------------------------
Oxidation -Reduction
----------------------------------
Antimony^
----------------------------------
----------------------------------
Cobalt^
----------------------------------
------------------------------------------
Sodium
------------------------------------------
Potential (ORP)
-------------------------------
Arsenic^
Iron
Strontium^
pH
----------------------------------
Bari
----------------------------------
----------------------------------
Magnesium
----------------------------------
------------------------------------------
Sulfate
------------------------------------------
-------------------------------
Redox Potential (Eh)
-------------------------------
Beryl
----------------------------------
Manganese
----------------------------------
Thallium^
------------------------------------------
Specific Conductance
-------------------------------
Boron
Molybdenum^
Total Dissolved Solids (TDS)
Temperature
----------------------------------
Calcium
----------------------------- ----
----------------------------------
Nickel^
----------------------------------
------------------------------------------
Total Organic Carbon
------------------------------------------
-------------------------------
Turbidity
-------------------------------
Chlorid-e
Nitrate + Nitrite
Vanadium^
^ Dissolved metals will be analyzed once per year during the
--------------- ---------------------------
Zinc^
-------------------------------
1st semi-annual sampling event.
------------------------------------------
-------------------------------
Water Level Only (10)
ABMW-5
MW-13
MW-18S
MW-19S
MW-20S / BR
MW-5BRR
PZ-07
PZ-09
PZ-10
Comprehensive water level sweeps will
occur semi-annually and will include
wells in Quarterly, Semi -Annual and
Water Level Only lists.
To Be Replaced
No well replacements planned
at this time
ABMW-01/S/BR
PZ-6
Discontinued Parameters (9)
Proposed (non -COI)
Constituents to be
Discontinued
Cadmium
Copper
Lead
Mercury
Nitrate as N
Total Radium (226+228)
Sulfide
Total Suspended Solids (TSS)
Total Uranium
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ = North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under Quarterly for
respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the 4th
Quarter 2018 IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the new wells will
be re-evaluated with NCDEQ and may be reduced and/or optimized. Replacement wells will not be considered "new wells" and will follow the respective monitoring protocol for
the well in which they replace.
Wells in bold are ash basin wells that may become restricted in 2020 at any time due to stability concerns from decanting/construction activities. Data submittals will identify any
wells that were not sampled as a result.

Wells for Quarterly Monitoring (77)
AB-1S'/D'
GWA-32D2 / BR2
AB-7S*/BRU*/BR*
GWA-33S"' / D1,2/ BR1,2
AB-8S*/I*/BRU*/BR*
GWA-38S2/D2
AS-1D'
GWA-395*
AS-2S'
GWA-405*
AS-7D' / BRB*
GWA-425
AS-8BR*
GWA-43S2 / D2
AS-9D*/BR*
GWA-4452 / D'/ BR
CCR-IB-3S2 / D2 /BR2
GWA-545/D/BRO
CLMW-2
GWA-56S2 / D2
CLMW-3S'/D'
GWA-575*/BRU*/BR*
GWA-2BRA'*
GWA-58S*/BRU*/BR*
GWA-10S2/D2
GWA-59D*/BR*
GWA-11S''2/ BRU''2/BR2/BRL'
GWA-62BRU*/BR*
GWA-13BR2
GWA-63S*/BRU*
GWA-1452 / D'/ BR
IB-752/D'
GWA-20D'
MW-20D'
GWA-21S'/BRU'/BR'
MW-23S2 / D2 / DR2
GWA-22S'
U5-2S-SLB*
Table 2.6 - Cliffside
Cliffside Steam Station - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (170)
AB-1BROR'
GWA-113RU
IB-65/D
AB-25'/D'/BRO'
GWA-2S'/ BRU'
MW-115'/DA/BRO/BRL
AB-3S'/SL'/MA15/I'/BRUA/BR/BRA
GWA-3D'
MW-2DA
AB-4S'/SL'/D/BR
GWA-4S'/ D'
MW-85'/ D
AB -SS'/ BRU / BR
GWA-5S / BRU
MW-105 / D
AB-6S'/ D / BR
GWA-12S / BRU
MW-20DR'
AS-1SB'
GWA-20S'/BR'
MW-21D/BR
AS-2D'/ BR
GWA-21BRL
MW-22BR / DR
AS-313RU
GWA-22BRU
MW-24D'/ DR'
AS-4S/D
GWA-23D
MW-25DR
AS-5S / BRU / BR
GWA-24S / D / BR
MW-30S'/ D' / DA'
AS-65 / D / BRA
GWA-25S
MW-32S' / D' / BR'
AS-7S'/I/BRL
GWA-265
MW-34S / BRU
AS-8S/D
GWA-27DA'/ BR'
MW-36S / BRU
BG-1S'/ D'/BRA
GWA-285 / BRU / BR
MW-38S'/ D'/ BR'
CCR-IB-15 / D
GWA-29D'/ BRA
MW-405 / BRU
CCR-U5-3S' / D'
GWA-30S / BR
MW-42S / DA
CCR-U5-4S / D / BR
GWA-31D / BRA
U5-1S / D
CCR-3BR
GWA-34S/BR
U5-2S-SLA' / D'/ BR'
CCR-6S / D
GWA-35S / D
U5-45 / D / BRA
CCR-7S' / D'
GWA-36S'/ D'
U5-5D'/ BR
CCR-8D' / BR
GWA-37S / D
U5-6S / D
CCR-9D
GWA-45D
U5-85 / D / BR
CCR-125 / D / BR
GWA-46D
CCR-13D
GWA-47D
CCR-15D
GWA-48BR
CLMW-1'
GWA-51D
CLMW-5S
GWA-64BRL
CLMW-6
GWA-65BR/BRL
CLP-1
GWA-66BRL
CLP-2
GWA-67BR/BRL
GWA-68BRL
1st semi-annual sampling event to be analyzed for parameters in Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (36) IL
2018 CSA Update COls
(Total and dissolved^ metals)
kArniCA
Water Quality Parameters
(Total and dissolved- metals)
Field Parameters
Total Uranium'
(233+234+236+238)
Aluminum^
Dissolved Oxygen (DO)
Boron
Alkalin'ty(CO3/HCO3)
Oxidation -Reduction
Chromium (total)^
Vanadium^
BariumA
Potential (ORP)
Chromium (hexavalent)
Beryllium^
pH
Cobalt^
Calcium
Redox Potential (Eh)
Iron
Chloride
Specific Conductance
Manganese^
Fluoride
Temperature
Total Radium' (226+228)
Lithium^
Turbidity
Strontium^
Magnesium
Sulfate
Nitrate + Nitrite
Thallium^
Potassium
Total Dissolved Solids (TDS)
Selenium^
A Dissolved metals will be analyzed once per year during the 1st
semi-annual sampling event.
Sodium
Phosphorus, dissolved
Total Organic Carbon (TOC)
Water Level Only (20)
AB-4UA15/LA15
BG-2D
CCPMW-2S / D
CCPMW-3S / D
CCPMW-4
CCPMW-5
CCPMW-6S / D
CCPTW-1S / D
CCPTW-2
GWA-6S / D
GWA-25D
GWA-26D
GWA-30BRU
GWA-455
Comprehensive water level sweeps will
occur semi-annually and will include wells
in Quarterly, Semi -Annual and Water
Level Only lists.
Replaced (3)
AS-7BRA (replaced by AS-7BRB)
GWA-2BR (replaced by GWA-2BRA)
U5-2S-SLA
CLMW-5D
MW-4D
MW-7D
MW-11D
AB-9S / D / BR
Discontinued Parameters (10)
Proposed (non -COI) Constituents
to be Discontinued
Antimony
Cadmium
Copper
Lead
Mercury
Molybdenum
Nickel
Sulfide
Total Suspended Solids (TSS)
Zinc
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ = North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under Quarterly for respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the 4th Quarter 2018 IMP and additional
constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the new wells will be re-evaluated with NCDEQ and may be reduced and/or
optimized.
**Wells were previously approved by DEQto be sampled for boron and sulfate only in historic versions of the IMP due to elevated pH. Wells that exhibit elevated pH are proposed to remain a boron-and-
sulfate- only sample location; however, if the pH improves with redevelopment to fall :58.5 at such well, the well will be sampled for the complete appropriate parameter suite for that well; i.e. "optimized non -
new well' or "new well' lists as proposed herein. No wells are currently flagged with this note but may be in the future.
' Wells to be sampled for total radium and total uranium, in addition to water quality parameters noted.
ZWell is sampled as part of CAMA Ash Basin IMP. Data is used for evaluating additional source units. These wells will be analyzed for parameters in Table 1.
Wells in bold are ash basin wells that may become restricted in 2020 at any time due to stability concerns from decanting/construction activities. Data submittals will identify any wells that were not sampled as
a result.

Wells for Quarterly Monitoring (24)
CP-11)
GP-1BR
CP-2S/BRU/BR
GP-2BRU/BR
CP-3S/BR
GP-3S/BR
CP-4S/BRU
GP-4S/BR
CP-5S/I/BR
GWA-60BRU/BR
CP-6S/BR
GWA-61BRU/BR
Table 2.6A - Cliffside
Cliffside Steam Station - Additional Source Area Wells
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (0)
Quarterly & Semi -Annual Parameters for Additional Source Area Wells
Additional source area wells will be analyzed for parameters in Table 1.
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
CON = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ= North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the
wells listed under Quarterly for respective events.

Table 2.7 - Dan River
Dan River Steam Station - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Quarterly Monitoring (45)
CPA-1S*/D*/BR*
CTA-3S*/D*/BR*
CPA-2S*/D*/BR*
CWA-1S*/D*/BR*
CPA-3S*/BR*
CWA-2S*/D*/BR*
CPA-4D*/BR*
CWA-3S*/D*/BR*
CPA-5D*/BR*
CWA-4S*/D*/BR*
CPA-6S*/D*/BR*
CWA-5S*/D*/BR*
CPA-7BR*
CWA-6S*/D*/BR*
CTA-1S*/D*/BR*
GWA-7BR*
CTA-2S*/D*/BR*
GWA-12BR*
Wells for Semi -Annual Monitoringt (51)
BG-1DA
GWA-15D
------------------------------------------
BG-5S/D
------------------------------------------
-----------------------------
GWA-16S/D
-----------------------------
BG-10S/D/BR
GWA-17D
------------------------------------------
CCR-03S/D
------------------------------------------
-----------------------------
GWA-20S/D
-----------------------------
G WA-4S/D
------------------------------------------
LF-CCR-04S/D
-----------------------------
GWA-5BR/BRD
------------------------------------------
LF-CCR-05S/D
-----------------------------
GWA-6S/D/BR
------------------------------------------
MW-12/D
-----------------------------
GWA-7S/D
------------------------------------------
MW-20S/D
-----------------------------
GWA-8S/D/BR
------------------------------------------
MW-21S/D
-----------------------------
GWA-9S/D/BR
------------------------------------------
MW-22S/D/BR
-----------------------------
GWA-10D
MW-23D/BR
------------------------------------------
GWA-12S/D
------------------------------------------
-----------------------------
MW-317BR/BRL
----- ------------------------
GWA-14S/D
1st semi-annual sampling event to be analyzed for parameters
in Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (35)
2018 CSA Update CON
Water Quality Parameters
Field Parameters
(Total and dissolved^ metals)
(Total and dissolved^ metals)
Antimony^
-------------------------------------------------------------------------
Manganese
Aluminum^
------------------------------------------
Dissolved Oxygen (DO)
------------------------------
Arsen iCA
Molybdenum^
Alkalinity (CO3/HCO3)
Oxidation -Reduction
Beryllium^
----------------------------------
-------------------------------------
Nickel^
--------------------------------------
------------------------------------------
Calcium
------------------------------------------
Potential (ORP)
------------------------------
Boron ^
--------------
Selenium^
--------------------------------------
Chloride
------------------------------------------
H
-----------------------------
y------------------
Ber Ilium^
----------------------------------
Strontium^
--------------------------------------
Fluoride
------------------------------------------
Redox Potential Eh
-----------------------------
Chromium (total)^
Sulfate
Lithium^
Specific Conductance
----------------------------------
Chromium (hexavalent)
----------------------------------
--------------------------------------
Total Dissolved Solids (TDS)
--------------------------------------
------------------------------------------
Magnesium
------------------------------------------
-----------------------------
Temperature
------------------- --------
Cobalt^
Vanadium^
Nitrate + Nitrite
------------------------------------------
Turbidity
----------------------------------
Iron A
--------------------------------------
Phosphorus, dissolved
------------------------------
^ Dissolved metals will be analyzed once per year during the
------------------------------------------
Potassium
-----------------------------
1st semi-annual sampling event.
------------------------------------------
Sodium
P = Interim Monitoring Plan
4 = Comprehensive Site Assessment
Is = Constituents of Interest
MA = Coal Ash Management Act
DEQ = North Carolina Department of Environmental Quality
Water Level Only (1)
GWA-10S
Comprehensive water level
sweeps will occur semi-
annually and will include wells
on Quarterly, Semi -Annual, and
Water Level Only lists.
To be Replaced
No well replacements planned
at this time.
o be Aband0ne
No well abandonments
planned at this time.
Discontinued Parameters
13
Proposed (non -COI)
Constituents to be
Discontinued
Barium
Cadmium
Copper
Lead
Mercury
Nitrate as N
Total Radium (226+228)
Sulfide
Thallium
Total Organic Carbon (TOC)
Total Suspended Solids (TSS)
Total Uranium
Zinc
+Semi -Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under Quarterly for
respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the 4th Quarter
2018 IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the new wells will be re-
evaluated with NCDEQ and may be reduced and/or optimized. Replacement wells will not be considered "new wells" and will follow the respective monitoring protocol for the well in
which they replace.

Wells for Quarterly
Monitoring (19)
Active Basin
CMW-5
DMW-2
MW-1
MW-3
Inactive Basins
DMW-3
IABMW-3S
IMW-4S
Coal Pile
CP-1S*/D*
CP-2S*/D*
CP-3S*/D*
CP-4S*/D*
CP-5S*/D*
CP-6S*/D*
Table 2.8 - H.F. Lee
H.F. Lee Energy Complex - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (57)
EL
Active Basin
Inactive Basins
AMW-6RBC
IABMW-1/S
AMW-11S/BC
IABMW-2/S
AMW-12S/BC
IABMW-3
AMW-13S/BC
IMW-1S/BC
AMW-14S/BC
IMW-2BC
AMW-15S/BC
IMW-3S/BC
AMW-16BC
IMW-4BC
AMW-17S/BC
IMW-5S/BC
AMW-18S
IMW-6S
AMW-19S/BC
IMW-7S
AMW-20S/BC
SMW-3
AMW-22S/BC
SMW-4
AMW-23S/BC
BW-1
BG M W-9
CW-1
CCR-100S
CW-3
CCR-104S
CW-4
CCR-106S
SMW-S
CMW-6/6R
1st semi-annual sampling
event to be analyzed for
parameters in Table 1.
CTMW-1
MW 2
LOLA
LLMW-1/S
LLMW-2/S
JOWL Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (33)
Water Quality Parameters (Total and dissolved^ metals)
Field Parameters
Alkalinity (CO3/HCO3)
Calcium
Nitrate + Nitrite
Dissolved Oxygen (DO)
------------------------------------
Aluminum^
-----------------------------------
Chloride
-------------------------------------
Phosphorus, dissolved
-------------------------------
Oxidation-Reduction
------------------------------------
Antimony^
-----------------------------------
Chromium (total)^
-------------------------------------
Potassium
Potential (ORP)
------------------------------------
Arsenic^
-----------------------------------
Chromium (hexavalent)
-------------------------------------
Selenium^
-------------------------------
pH
------------------------------------
BariUMA
-----------------------------------
Cobalt^
-------------------------------------
Sodium
.....
Redox Potential (Eh)
------------------------------------
Boron^
-----------------------------------
Fluoride
-------------------------------------
Strontium^
-------------------------------
Specific Conductance
^Dissolved metals will be
-----------------------------------
Iron^
-------------------------------------
Sulfate
-------------------------------
Te_ mperature __
analyzed once per year during
Lithium^_
-------------- --
Thallium^
------------- --------------------- ---
Turbidity
------------ --
the 1st semi-annual sampling
Magnesium
Total Dissolved Solids (TDS)
- - - -
-------------------------------
event.
Manganese^
Vanadium^
Water Level Only (9)
Active Basin
AMW-9BC
AMW-21S/BC
BGMW-10
CMW-7
CMW-8
CMW-10
DMW-1
Inactive Basins
CW-2
Comprehensive water level sweeps will
occur semi-annually and will include
wells on Quarterly, Semi -Annual and
Water Level Only lists.
JW To Be Replaced
No well replacements planned
at this time
Wells within the footprint of
the Active Basin are slated for
abandonment in 2020.
ABM W-1/S/D
PZ-2
PZ-3
Discontinued Parameters
(15)
Proposed (non -COI)
Constituents to be
Discontinued
Beryllium
Cadmium
Copper
Lead
Mercury
Methane
Molybdenum
Nickel
Nitrate as N
Total Radium (226+228)
Sulfide
Total Organic Carbon (TOC)
Total Suspended Solids (TSS)
Total Uranium
Zinc
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COIs = Constituents of Interest
LAMA = Coal Ash Management Act
NCDEQ= North Carolina Department of Environmental Quality
t5emi-Annual monitoring events are scheduled to be performed concurrently with two quarterly monitoring events per year and will include the wells listed under "Wells for
Quarterly Monitoring" for respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the 4th
Quarter 2018 IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the new wells
will be re-evaluated with NCDEQ and may be reduced and/or optimized. Replacement wells will not be considered "new wells" and will follow the respective monitoring protocol
for the well in which they replace.
Wells in bold are ash basin wells that may become restricted in 2020 at any time due to stability concerns from decanting/construction activities. Data submittals will identify
any wells that were not sampled as a result.

Wells for Quarterly Monitoring
(48)
AB-1S'/D'/BR'/BRL'/B RLL'/B RLLL'
AB-10SL/D/BR/BRL'
AL-1S'/D'/BR'/BRL'
AL-2S/D/BR/BRL/BRLL/BRLLL'
AL-3S/D/BR
AL-4D/BR/BRL
CP-1S/D/BR
CP-2S/D
CP-3S/D
GWA-15S'/D'
PVSF-15/D/BR
PVSF-2S/D/BR/BRL
PVSF-3S'/D'/BR'
PVSF-45' D' BR'
Table 2.9 - Marshall
Marshall Steam Station - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (103)
A J
AB-2S'/D'/BR'
GWA-4S/D
AB-3S/D
GWA-5S/D
AB-SS'/D'/DU'/BR'
GWA-6S/D
AB-6S/D/BRA/BRL
GWA-7S/D
AB-7DU
GWA-8S/D
AB-8DU
GWA-9B R
AB-9S/D/BR
GWA-10S/D
AB-12S'/SL'/D'/BR'
GWA-11S'/D'/BR'
AB-14S/D/DU
GWA-12S'/D* */BR'
AB-1SSL/D/BR
GWA-13S/DA**
AB-16DU
GWA-145/D
AB-20S/D
ILF-15/D/BR
AB-21S/D
ILF-25/D/BR
BG-1S'/D'/BRA'
MW-1
BG-25'/BR'
MW-4'/D'
BG-35'/D'/BR'
M W-65'/D'
CCR-9S/DA
MW-75'/D'
GP-1S/D
MW-8S'/D'
GP-25/D
MW-9S'/D'
G P-3S/D
M W-12S/D
GWA-1S/D/BR
M W-13S/D
GWA-2DA
M W-145/D/BR'/BRL'
GWA-35/D
1st semi-annual sampling event to be analyzed for parameters in Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (38)
2018 CSA Update COls
(Total and dissolved^ metals)
Water Quality Parameters
(Total and dissolved^ metals)
Field Parameters
Antimony^
Manganese^
Aluminum^
Dissolved Oxygen (DO)
Arsenic^
Molybdenum^
Alkalinity (CO3/HCO3)
Oxidation -Reduction Potential (ORP)
Barium^
Nickel^
Calcium
pH
Beryllium^
Total Radium' (226+228)
Fluoride
Redox Potential (Eh)
Boron^
Selenium^
Lithium^
Specific Conductance
Cadmium^
Strontium^
Magnesium
Temperature
Chloride
Sulfate
Nitrate + Nitrite
Turbidity
Chromium (total)^
Total Dissolved Solids (TDS)
Potassium
Chromium (hexavalent)
Thallium^
Sodium
Cobalt^
Vanadium^
Total Organic Carbon (TOC)
Iron^
A Dissolved metals will be analyzed once per year during the 1st semi-
annual sampling event.
Notes:
IMP = Interim Monitoring Plan
---------------------------------------------------------------------------------------------------------------------------------------------
CSA = Comprehensive Site Assessment
---------------------------------------------------------------------------------------------------------------------------------------------
COls = Constituents of Interest
---------------------------------------------------------------------------------------------------------------------------------------------
CAMA = Coal Ash Management Act
---------------------------------------------------------------------------------------------------------------------------------------------
NCDEQ = North Carolina Department of Environmental Quality
---------------------------------------------------------------------------------------------------------------------------------------------
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will
include the wells listed under Quarterly for respective events.
---------------------------------------------------------------------------------------------------------------------------------------------
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for
parameters formerly included as part of the 4th Quarter 2018 IMP and additional constituents analyzed voluntarily (see Table 1).
After four quarterly events, the monitoring frequency and/or parameter list for the new wells will be re-evaluated with NCDEQ and
may be reduced and/or optimized. Replacement wells will not be considered "new wells" and will follow the respective monitoring
protocol for the well in which they replace.
---------------------------------------------------------------------------------------------------------------------------------------------
** Wells to be analyzed for boron and sulfate only due to elevated pH.
---------------------------------------------------------------------------------------------------------------------------------------------
' Wells to be sampled for total radium (226+228), in addition to water quality param-eters- noted.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2 Well currently included on IMP list that is proposed to be removed from IMP (CAMA) sampling; will continue to be
sampled under applicable landfill permit requirements.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Wells in bold are ash basin wells that may become restricted in 2020 at anytime due to stability concerns from
decanting/construction activities. Data submittals will identify any wells that were not sampled as a result. I
Water Level Only (27)
AB-4S/SL/D
AB-7S/D
AB-8S/D
AB-10S
AB-11S/D
AB-13S/D
AB-16S/D
GWA-2S
MS-82
MS-102
MS-112
MS-132
MW-22
M W-32
M W-52
M W-10S/D
M W-11S/D
OB-1 (Ash Basin)
Comprehensive water level sweeps will occur semi-
annually and will include wells on Quarterly, Semi -
Annual and Water Level Only lists.
AB-17S/D 7
AB-185/D/DU
To Be Replaced (2)
AB-17S/D
Discon rs (8)
Proposed (non -COI) Constituents to be
Discontinued
Copper
Lead
Mercury
Nitrate as N
Sulfide
Total Suspended Solids(TSS)
Total Uranium
Zinc

Wells for Quarterly
Monitoring (3)
I CW-21/D'
CCR-102BR-BG
Table 2.10 - Mayo
Mayo Steam Electric Plant - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitorin
la
ABMW-11
MW-31
ABW-2/BR/BRL
MW-3BR
ABMW-3/S
MW-5BR
ABMW-4X/D/BR
MW-9BRL
BG-1'
MW-12S' / D1
BG-2'
MW-13BR
CW-1 / D
MW-16S / D' / BR'
CW-3
MW-18D / BR
CW-4
MW-19D / BR
CW-5
MW-104BRM/BRL
CW-61
MW-2
MW-105BRM
1st semi-annual sampling event to be analyzed for parameters
in Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (32)
2017 CSA Update COls
Water Quality Parameters
Field Parameters
(Total and dissolved^ metals)
Arsenic^
Molybdenum^
Alkalinity (CO3/HCO3)
Dissolved Oxygen (DO)
----------------------------------
Bariu MA
----------------------------------
Total Radium' (226 + 228)
------------------------------------------
Calcium
-----------------------------
Oxidation-Reduction
----------------------------------
Boron A
----------------------------------
Strontium^
-------------------------------------------
Chloride
Potential (ORP)
----------------------------------
Chromium (total)^
----------------------------------
----------------------------------
Sulfate
----------------------------------
---------------- --------------------------
Fluoride
------------------------------------------
----------------------------
pH
----------------------------
---Chromium-----(hexavalent)-
-------------------------------------------------------------------------------------
Solids (TDS)
Total-Dissolved -
Magnesium
--------------
Redox Potential (Eh)
----------------------------
Cobalt^
----------------------------------
Total Uranium'
Nitrate + Nitrite
------------------------------------------
Specific Conductance
----------------------------
Iron^
(233+234+236+238)
Potassium
Temperature
-------------- -------------------------------------------------------
Lithium^
Vanadium^
------------------------------------------
Sodium
----------------------------
Turbidity
----------------------------------
Manganese
----------------------------------
--------- Total Organic -----------------Carbon ----------------
----------------------------
A Dissolved metals will be analyzed once per year during the
------------------------------------------
------------------------------------------
----------------------------
----------------------------
1st semi-annual sampling event.
Water Level Only
M W-4
MW-8BR
MW-10BR
MW-14BR
MW-103BRL
MW-105BRL
MW-107BRL
Comprehensive water level sweeps will
occur semi-annually and will include
wells on Quarterly, Semi -Annual and
Water Level Only lists.
To Be Replaced
No well replacements planned
at this time
To be Abandoned
No well abandonments
planned at this time
Discontinued Parameters
(14)
Proposed (non -COI)
Constituents to be
Discontinued
Aluminum
Antimony
Beryllium
Copper
Cadmium
Lead
Mercury
Nickel
Nitrate as N
Selenium
Sulfide
Thallium
Total Suspended Solids
Zinc
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
Cols = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ = North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under Quarterly for
respective events.
1 Wells to be sampled for total radium (226 + 228), in addition to water quality parameters noted. If concentrations are greater than the Federal MCL, sample quarterly. If
concentrations are less than the Federal MCL, reduce total radium sampling to semi-annually and reevaluate historical exceedances as possibly anomalous. If determined to be
anomalous, discontinue sampling for total radium. Background wells BG-1 and BG-2 will also be included in semiannual sampling of total radium for ongoing comparative
purposes.
Wells in bold are ash basin wells that may become restricted in 2020 at any time due to stability concerns from decanting/construction activities. Data submittals will identify any
wells that were not sampled as a result.

Wells for Quarterly
Monitoring (18)
CPA-ID/BR
CPA-2 D/B R
CPA-3 D/B R
CPA-4D
CPA-5S/D/BR
CPA-7D
GYP-1D
GYP-2BR
GYP-3D/BR
GYP-4D
GYP-5D/BR
Table 2.10A - Mayo
Mayo Steam Electric Plant - Additional Source Area Wells
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (0)
Quarterly & Semi -Annual Parameters for Additional Source Area Wells
Additional source area wells will be analyzed for parameters in Table 1.
MP = Interim Monitoring Plan
;SA = Comprehensive Site Assessment
;Ols = Constituents of Interest
;AMA = Coal Ash Management Act
= North Carolina Department of Environmental Quality
Water Level Only (1)
I GYP-1BR I
emi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under
iarterly for respective events.

Wells for Quarterly
Monitoring (21)
CPA-1S/D
CPA-2S/D
CPA-3S/D
CPA-4S
CPA-5S/D
CPA-6S
CPA-7S/D
GWA-11S/D
GWA-12S/D
GWA-20S
GWA-2BRU
GWA-3SA/D/BR
Table 2.11 - Riverbend
Riverbend Steam Station - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
- November 2019
Wells for Semi -Annual Monitoringt (70)
AB-8S/D
GWA-21S/D/BR
BG-1S/DA
GWA-22S/D/BRA
BG-4S/D
MW-1S/D
BG-5D/BR
MW-2SA/D
GWA-1S/BRU
MW-3S/D
GWA-2S/BR
MW-4S/D
GWA-4S/D/BR
MW-5S/D
GWA-5S/D
MW-6S/D
GWA-6S/D
M W-7SR/D/BRA
GWA-7S/D/BR
MW-8S/I/D
GWA-8S/D
M W-9/9 DA/9 B RA
GWA-9S/D/BR
MW-10
GWA-10S/BRU
MW-11SR/DR
GWA-13S/D
M W-13
GWA-14S/D
GWA-20DA/BR
M W-14
MW-15/15DA/156R
1st semi-annual sampling event to be analyzed for parameters in
Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (33)
E
2018 CSA Update COls
(Total and dissolved^ metals)
Water Quality Parameters
(Total and dissolved^ metals)
____j
Field Parameters
Antimony^
Iron
Aluminum^
Dissolved Oxygen (DO)
Arsenic^
Manganese
Alkalinity (CO3/HCO3)
Oxidation -Reduction
Potential (ORP)
Beryllium^
Strontium^
Cadmium^
Boron
Sulfate
Calcium
pH
Chromium (total)^
Total Dissolved Solids
(TDS)
Magnesium
Redox Potential (Eh)
Chromium (hexavalent)
Molybdenum^
Nickel^
Specific Conductance
Temperature
Cobalt^
Vanadium^
^ Dissolved metals will be analyzed once per year during
the 1st semi-annual sampling event.
Nitrate + Nitrite
Turbidity
Phosphorus, dissolved
Potassium
Sodium
Thallium^
Zinc^
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ = North Carolina Department of Environmental Quality
Water Level Only (8)
BG-2S/D/BR
BG-3S/D
BG-4BR
OB-1
O B-2
Comprehensive water level sweeps
will occur semi-annually and will
include wells on Quarterly, Semi -
Annual and Water Level Only lists.
To Be Replaced (9)
GWA-9BRA
GWA-15SA/DA
GWA-20BRA
GWA-22SA
GWA-23 SA/DAA/BRA
M W-4SA
Abandoned(Z)
GWA-15S/D
Discontinued Parameters
(12)
Proposed (non -COI)
Constituents to be
Discontinued
Barium
Chloride
Copper
Lead
Mercury
Nitrate as N
Total Radium (226+228)
Selenium
Sulfide
Total Organic Carbon (TOC)
Total Suspended Solids (TSS)
Total Uranium
nual monitoring events are scheduled to be performed concurrently with two of the Quarterly monitoring events and will include the wells listed under Quarterly for respective

Wells for Quarterly Monitoring (24)
ABMW-07BRLL*
MW-37D*
HWMW-01BR*
MW-37S*
MW-01BRL*
MW-39BR*
MW-21BRLR
MW-39D*
MW-34BR*
MW-108BRL*
MW-34D*
MW-108BRLL*
MW-35BR*
MW-205BRL*
MW-35D*
MW-205BRLL*
MW-35S*
MW-205BRLLL*
MW-36BR*
MW-208BRL*
MW-36D*
MW-208BRLL*
MW-37BR*
MW-208BRLLL*
Table 2.12 - Roxboro
Roxboro Steam Electric Plant - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Semi -Annual Monitoringt (76)
ABMW-011
GMW-09
MW-1SBR1
ABMW-01BR'
GMW-10
MW-15D1
ABMW-02'
GMW-11
MW-16BR1
ABMW-02BR'
GPMW-1BR
MW-17BR1
ABMW-03
GPMW-1D
MW-18BR1
ABMW-03BR
GPMW-1S
MW-18D1
ABMW-03BRL
GPMW-2BR
MW-19BRL1
ABMW-05D'
GPMW-2D
MW-20BRL
ABMW-06
GPMW-3BR
MW-22BR
ABMW-06BR
GPMW-3D
MW-22D
ABMW-07BR
MW-01BR
MW-23BRR
ABMW-07BRL
MW-021
MW-24BR
BG-011
MW-02BR
MW-26BR
BG-01BR1
MW-03BR1
MW-27BR
BG-01BRLR1
MW-04BR
MW-28BR
BG-2BR1
MW-05BR1
MW-29BR
CCR-113BR
MW-05D1
MW-30BR
CCR-113D
MW-06BR1
MW-31BR
CW-01
MW-06D1
MW-32BR
CW-021
MW-07BR
MW-33BR**
CW-02D1
MW-08BR
1st semi-annual
sampling event to be
analyzed for parameters
in Table 1
CW-03
MW-09BR1
CW-03D
MW-10BR1
CW-04
MW-11BR1
CW-051
MW-11D1
GMW-06
MW-12BR
GMW-07
MW-13BR1
GMW-8R
MW-14BR'
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (34)
2017 CSA Update CON
(Total and dissolved^ metals)
ILAntimonyA
Water Quality Parameters
(Total and dissolved^ metals)
Field Parameters
Sulfate
Aluminum^
Boron
Total Dissolved Solids (TDS)
Alkalinity (CO3/HCO3)
Dissolved Oxygen (DO)
Chromium (total)^
Total Uranium'
(233+234+236+238)
Arsenic^
Oxidation -Reduction
Potential (ORP)
Chromium (hexavalent)
Calcium
Cobalt^
Vanadium^
Chloride
pH
Iron
Fluoride
Redox Potential (Eh)
Manganese
Lithium^
Specific Conductance
Molybdenum^
Magnesium
Temperature
Selenium^
Nitrate + Nitrite
Turbidity
Strontium^
Potassium
^ Dissolved metals will be analyzed once per year during the
1st semi-annual sampling event.
Total Radium' (226 + 228)
Sodium
Total Organic Carbon (TOC)
Water Level Only (2)
ABMW-05
MW-25BR
Comprehensive water level sweeps will
occur semi-annually and will include
wells on Quarterly, Semi -Annual and
Water Level Only lists.
To Be Replaced
No well replacements planned at
this time
No well abandonments planned
this time.
Discontinued Parameters (12)
Proposed (non -COI) Constituents
to be Discontinued
Barium
Beryllium
Copper
Cadmium
Lead
Mercury
Nickel
Nitrate as N
Sulfide
Thallium
Total Suspended Solids (TSS)
Zinc
s:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ = North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under Quarterly for
respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the 4th
Quarter 2018 IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the new wells
will be re-evaluated with NCDEQ and may be reduced and/or optimized.
** Denotes well with high pH. If well is on quarterly or semi annual sampling, sample for Boron and Sulfate only due to elevated pH. Respective well is proposed to remain a
Boron- and Sulfate -only sample if location is proposed to remain in the IMP. However, if the pH improves with redevelopment, those wells will be sampled for the full suite of
COls and water quality parameters proposed herein if pH is within compliance.
1 Wells to be sampled for total radium and total uranium, in addition to water quality parameters noted.
Wells in bold are ash basin wells that may become restricted in 2020 at any time due to stability concerns from decanting/construction activities. Data submittals will identify any
wells that were not sampled as a result.

Table 2.12A - Roxboro
Roxboro Steam Electric Plant - Additional Source Area Wells
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Quarterly Monitoring (16)
CPA-1BR
CPA-4BR
CPA -ID
CPA-41D
CPA -IS
CPA-4S
CPA-2BR
CPA-5BR
CPA-2 D
CPA-5 D
CPA-2S
CPA-6BR
CPA-3BR
CPA-61D
CPA-31D
CPA-6S
Wells for Semi -Annual Monitoringt (0)
Quarterly & Semi -Annual Parameters for Additional Source Area Wells
Additional source area wells will be analyzed for parameters in Table 1.
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls = Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ = North Carolina Department of Environmental Quality
nual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under Quarterly for
events.

Table 2.13 - Sutton
L.V. Sutton Energy Complex - IMP Optimization
Summary of Wells, Frequency, & Parameters
(to begin Q1 2020)
Modification - November 2019
Wells for Quarterly Monitoring (38)
Wells for Semi -Annual Monitoringt (51
CCR-110B
MW-15RB*
AW-03C
MW-24RC
CCR-110C
M W-15 RC*
AW-04C
M W-27B
CCR-112 B
M W-33C
AW-05C
M W-27C
CCR-112C
M W-41B
AW-08C
M W-28C
CCR-114B
MW-45B*
AW-09C
MW-31R-C
CCR-114C
MW-45C*
MW-05B
MW-36B
CCR-115B
MW-46B*
MW-05C
MW-36C
CCR-115C
MW-46C*
MW-05CD
MW-37B
FPA-02B*
MW-50B*
MW-05D
MW-37C
FPA-02C*
M W-50C*
M W-05R-E
M W-37CD
FPA-03B*
MW-41C
MW-07C
MW-37D
FPA-03C*
MW-41D
MW-08B
MW-37E
FPA-04B*
MW-43B*
MW-08
MW-38C
FPA-04C*
MW-43C*
MW-08D
MW-39C
FPA-09 B*1
M W-44B*
M W-08E
M W-40C
FPA-09C* 1
M W-44C*
M W-16
M W-41B
MW-08B
SMW-01C
MW-16D
MW-41C
MW-08D
SMW-02C
MW-20
MW-41D
MW-12R
SMW-03C
MW-20D
MW-41E
MW-21C
SMW-01B
MW-22C
SMW-04C
MW-23B
SMW-05B
MW-23C
SMW-05C
MW-23D
SMW-06B
MW-23E
SMW-06C
MW-24RB
1st semi-annual sampling event to be analyzed for parameters in Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (31)
2018 CSA Update CON
Water Quality Parameters
Field Parameters
(Total and dissolved^ metals)
(Total and dissolved^ metals)
Arsenic^
Strontium^
Alkalinity (CO3/HCO3)
Dissolved Oxygen (DO)
------------------------------------
Boron^
-------------------------------------------
Sulfate
----------------------------------------------------
Aluminum^
-----------------------------------
Oxidation-Reduction
------------------------------------
Chloride
-------------------------------------------
TDS (Total Dissolved Solids)
----------------------------------------------------
Barium^
Potential (ORP)
------------------------------------
Chromium (hexavalent)
-------------------------------------------
Vanadium^
----------------------------------------------------
Calcium
-----------------------------------
Redox Potential (Eh)
------------------------------------
Cobalt^
------------------------------------
-------------------------------------------
-------------------------------------------
----------------------------------------------------
Lithium^
----------------------------------------------------
-----------------------------------
Specific Conductance
-----------------------------------
Iron^
------------------------------------
-------------------------------------------
Fluoride
----------------------------------------------------
Temperature
-----------------------------------
Manganese^
------------------------------------
-------------------------------------------
Magnesium
----------------------------------------------------
Turbidity
-----------------------------------
Molybdenum^
------------------------------------
-------------------------------------------
Nitrate + Nitrite
----------------------------------------------------
-----------------------------------
pH
------------------------------------
-------------------------------------------
Potassium
----------------------------------------------------
-----------------------------------
Selenium^
Sodium
----------------------------------------------------
Total Organic Carbon (TOC)
----------------------------------------------------
-----------------------------------
-----------------------------------
A Dissolved metals will be analyzed
once per year during the 1st
semi-annual
sampling event.
P = Interim Monitoring Plan
---------------------------------------------------------------
4 = Comprehensive Site Assessment
Is = Constituents of Interest
---------------------------------------------------------------
MA = Coal Ash Management Act
DEQ= North Carolina Department of Environmental Quality
Water Level Only
(20)
AW-01C
AW-02C
AW-02D
AW-05D
AW-06R-D
AW-06R-E
AW-07R-D
AW-09D
MW-11
MW-19
MW-22B
MW-28B
MW-32C
MW-38B
MW-38D
MW-39B
MW-39D
MW-40B
M W-40D
SMW-06D
Comprehensive water level sweeps will occur
semi-annually and will include wells on
Quarterly, Semi -Annual and Water Level Only
lists.
To Be Replaced
No well replacements planned at this
time.
IDiscontinued Parameters (16)
IProposed (non -COI) I
Constituents to be Discontinued
Antimony
•-------------------
Beryllium
•-------------------
Cadmium
•-------------------
Chromium (total
Lead
Mercury
Nickel
Nitrate as N
Phosphorus
Total Radium (226+228)
------------Sulfide------------•
Thallium
Total Suspended Solids (TSS)
Total Uranium
Zinc
nual monitoring events are scheduled to be performed concurrently with two Quarterly monitoring events per year and will include the wells listed under Quarterly for respective events.
*New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly included as part of the 4th Quarter 2018 IMP and additional
:onstituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring frequency and/or parameter list for the new wells will be re-evaluated with NCDEQ and may be reduced and/or optimized.
Replacement wells will not be considered "new wells" and will follow the respective monitoring protocol for the well in which they replace.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- Revised from March 2019 IMP (after well installation): well FPA-16 is now labeled FPA-913 and FPA-1C is now labeled FPA-9C.

Wells for Quarterly
Monitoring (19)
BW-4DA*
CPA-1S*/I*
CPA-21 *
CPA-3S*/I*
CPA-4S*/I *
CPA-5S*/I*
CPA-6S*/I *
CPA-7S*/I*
CPA-8S*/I*
M W-5511
PW-1 (DEP #2)
PZ-103*
Table 2.14 - Weatherspoon
Weatherspoon Power Plant - IMP Optimization
Summary of Wells, Frequency & Parameters
(to begin Q1 2020)
Modification Request - November 2019
Wells for Semi -Annual Monitoringt (26)
AW-02S
CW-31
AW-03S/I
MW_11
AW-04S
M W-2'
AW-05S
M W-3'
AW-06S
M W-4'
BW-2S1
MW-5'
BW-3S1/11
MW-33S/l/D
BW-4S1/11
M W-411
BW-5S
MW-521
CCR-101-BG'
CCR-107'
CW-2
1st semi-annual sampling event to be analyzed
for parameters in Table 1.
Optimized Quarterly & Semi -Annual Parameters for "non -new wells" (39)
Water Quality Parameters
Field Parameters
(Total and dissolved^ metals)
Alkalinity (CO3/HCO3)
Lithium^
Vanadium^
Dissolved Oxygen (DO)
--------------------------------------------------------------
Aluminum^
--------- ---------------------
Magnesium
•------------------------------
-----------------------------------------------------------
Total Uranium'
Oxidation -Reduction
Arsenic^
------------------------------
Manganese
-------------------------------
(233+234+236+238))
-----------------------------------------------------------
Potential (ORP)
Barium^
--------------------------------------------------------------
Molybdenum^
Zinc^
-----------------------------------------------------------
pH
Beryllium^
Nickel^
Redox Potential (Eh)
Boron
Nitrate + Nitrite
Specific Conductance
------------------------------
Calcium
-------------------------------
Potassium
-----------------------------
-----------------------------
Temperature
Chloride
Total Radium' (226 + 228)
Turbidity
---------- ----------------------
Chromium (total)^
------------------------------
Selenium^
-----------------------------------------------------------
------------------------------
Chromium (hexavalent)
-------------------------------
Sodium
-----------------------------------------------------------
Cobalt^
Strontium^
------------------------------
Copper A
--------------------
Sulfate
--------------------------------------------------------------
Fluoride-
Thallium^
--------- ---------
•------------------------------
^ Dissolved metals will be analyzed once per year
Iron
Total Dissolved Solids
____________
during the 1st semi-annual sampling event.
Lead
(TDS)
Water Level Only (16)
AW-01S/l/D
AW-02D
AW-03D
BW-01
BW-3D
BW-4D
CW-1
M W -6
M W-7
MW-41D
MW-531/D
M W-54D
MW-55D
Comprehensive water level sweeps will
occur semi-annually and will include
wells on Quarterly, Semi -Annual and
Water Level Only lists.
Replaced (2)
MW-6 (replaced by CCR-107)
MW-7 (replaced by CCR-107)
Discontinued Parameters (7)
Antimony
Cadmium
Mercury
Nitrate as N
Sulfide
Total Organic Carbon (TOC)
Total Suspended Solids (TSS)
Notes:
IMP = Interim Monitoring Plan
CSA = Comprehensive Site Assessment
COls - Constituents of Interest
CAMA = Coal Ash Management Act
NCDEQ = North Carolina Department of Environmental Quality
tSemi-Annual monitoring events are scheduled to be performed concurrently with two of the quarterly monitoring events and will include the wells
listed under Quarterly for respective events.
* New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly
included as part of the 4th Quarter 2018 IMP and additional constituents analyzed voluntarily (see Table 1). After four quarterly events, the monitoring
frequency and/or parameter list for the new wells will be re-evaluated with NCDEQ and may be reduced and/or optimized. Replacement wells will not
be considered "new wells" and will follow the respective monitoring protocol for the well in which they replace.
11 Wells to be sampled for total radium (226 + 228) and total uranium (233 + 234 + 236 + 238), in addition to water quality parameters noted.