NC0004987_MSS_Appendix F_20191231

Corrective Action Plan Update December 2019
Marshall Steam Station
APPENDIX F
FRACTURED BEDROCK EVALUATION
SynTerra

L,
synTerra
FRACTURED BEDROCK EVALUATION
MARSHALL STEAM STATION
8320 EAST CAROLINA HIGHWAY 150
TERRELL, NC 28682
DECEMBER 2019
PREPARED FOR
DUKE
ENERGY:
CAROLINAS
DUKE ENERGY CAROLINAS, LLC
i
eggy Altman
'roject Geologist
Brian Wilker, NC LG 2546
Project Manager

Fractured Bedrock Evaluation December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station SynTerra
TABLE OF CONTENTS
SECTION PAGE
1.0
INTRODUCTION........................................................................................................1-1
2.0
LINEAMENT EVALUATION...................................................................................2-1
2.1
Imagery Selection......................................................................................................2-1
2.2
Lineament Selection and Summary........................................................................
2-1
3.0
DEEP BEDROCK EVALUATION FIELD PROCEDURES AND
IMPLEMENTATION..................................................................................................
3-1
3.1
Purpose.......................................................................................................................
3-1
3.2
Drilling Methodology and Well Design................................................................
3-1
3.3
Well Development....................................................................................................
3-4
3.4
Hydraulic Conductivity Measurements................................................................
3-4
3.5
Deep Bedrock Groundwater Sampling..................................................................
3-4
4.0
BEDROCK FRACTURE EVALUATION METHODS ..........................................
4-1
4.1
Flow Profile Characterization.................................................................................
4-1
4.2
Fracture Hydraulic Apertures.................................................................................4-2
4.3
Fracture Spacing........................................................................................................4-3
4.4
Fracture Orientation Plots and Statistics...............................................................
4-4
4.5
Summary of Bedrock Fracture Characteristics.....................................................
4-6
4.6
Implications of Bedrock Fracture Network for Groundwater Flow..................4-6
5.0
BEDROCK MATRIX DIFFUSION EVALUATION..............................................5-1
5.1
Sample Selection........................................................................................................5-1
5.2
Matrix Porosity and Bulk Density..........................................................................
5-1
5.3
Petrographic Evaluation..........................................................................................
5-2
5.4
Implications of Bedrock Matrix Characteristics for Groundwater ....................
5-2
6.0
REFERENCES...............................................................................................................
6-1
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LIST OF FIGURES
Figure 1A USGS Map without Lineaments
Figure 1B
USGS Map with Lineaments
Figure 2A
1950 Aerial Photograph without Lineaments
Figure 2B
1950 Aerial Photograph with Lineaments
Figure 3
Deep Bedrock Evaluation Locations
Figure 4
Hydraulic Conductivity Vertical Profiles
Figure 5
Hydraulic Aperture Vertical Profiles
Figure 6
Fracture Spacing Vertical Profile
Figure 7
General Cross Sections
LIST OF TABLES
Table 1 Analytical Results for Deep Bedrock Wells
Table 2 Porosity and Bulk Density Results
LIST OF ATTACHMENTS
SynTerra
Attachment A Boring Logs, Well Construction Records, and Well Development
Logs
Attachment B USGS FLASH Results and Calculations
Attachment C Geophysical Logging Report
Attachment D Petrographic Evaluation of Core Samples
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LIST OF ACRONYMS
02L
North Carolina Administrative Code, Title 15A, Subchapter 02L,
Groundwater Classification and Standards
ASTM
American Society for Testing and Materials
bgs
below ground surface
CAP
Corrective Action Plan
Core Labs
Core Laboratories
COI
constituent of interest
CSA
Comprehensive Site Assessment
Duke Energy
Duke Energy Carolinas, LLC
en
hydraulic aperture
FLASH
Flow -Log Analysis of Single Holes
g
acceleration due to gravity
g
gram
g/cm3
grams per cubic centimeter
GEL
GEL Solutions
gpm
gallons per minute
HPF
heat pulse flowmeter
I.D.
inner diameter
IMP
Interim Monitoring Plan
Kd
constituent partition coefficient
µ
viscosity of water
µg/L
micrograms per liter
µm
microns
mm
millimeters
MSS/Station
Marshall Steam Station (refers to actual facility)
n
number of individual fractures in a flow layer
NCAC
North Carolina Administrative Code
NCDENR
North Carolina Department of Environment and Natural Resources
NTU
nephelometric turbidity unit
pW
density of water
PVC
polyvinyl chloride
Q
flow rate
ro
radius of influence
rw
radios of borehole
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LIST OF ACRONYMS (CONTINUED)
well drawdown
SAEDACCO South Atlantic Environmental Drilling and Construction Company
Site/Marshall Marshall Steam Station (refers to entire property)
SP spontaneous potential
SPR single point resistance
T transmissivity
TD total depth
USGS United States Geological Survey
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1.0 INTRODUCTION
This report provides a detailed characterization of the bedrock near the ash basin at
Marshall Steam Station (Marshall, MSS, Station, or Site). The characterization is based
on additional evaluation of lineaments, the bedrock fracture system, and the bedrock
matrix. The information in this report supplements information presented in the
Comprehensive Site Assessment (CSA) Update (SynTerra, 2018). This report also
supports the development of groundwater remediation alternatives as part of the
Marshall Corrective Action Plan (CAP).
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2.0 LINEAMENT EVALUATION
To supplement the CSA bedrock characterization and support the CAP for the ash basin
at Marshall, SynTerra evaluated lineaments in the vicinity of the ash basin. Lineaments
are linear features at ground surface that might have resulted from underlying bedrock
fractures, fracture zones, faults, or other geologic structures. Lineaments represent the
approximate area of possible preferential groundwater flow zones in bedrock.
2.1 Imagery Selection
Aerial imagery and topographic information used for the lineament evaluation met the
following criteria:
• The scale and resolution are sufficiently detailed to identify apparent linear
features not caused by anthropogenic activity.
• The topographic map (1962) and aerial image (1950 aerial) used for the
evaluation were produced before ash basin construction in 1963.
Details pertaining to the topographic map and aerial image include:
• Topographic map - Duke Power Company-1962a. Plant Marshall - Units 1 & 2,
Site Plan, Drawing No. M-1, Revision 15, March 19, 1987. Surface topography
was overlain on the 2016 Lake Norman Quadrangle 7.5 Minute Series. Scale
1:24,000. (Figure 1A)
• Aerial photograph - The November 13, 1950, photograph was obtained from the
United States Geological Survey (USGS) Earth Explorer website at
http://earthexplorer.usgs.gov. (Figure 2A)
2.2 Lineament Selection and Summary
As provided by USGS (Clark et al., 2016), the features used to identify the lineaments for
this evaluation include:
• Linear topographic features
• Straight stream segments
• Aligned gaps in ridges
• Vegetation
Areas near the Marshall ash basin north of Highway 150, east of Sherrills Ford Road,
and south of Island Point Road were visually reviewed to identify linear features. The
selected aerial photograph and topographic map were evaluated separately.
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Lineaments identified on the 1962 topographic survey map are presented on Figure 1B,
and lineaments identified on the 1950 aerial photograph are presented on Figure 2B.
Lineament orientations from each image have been summarized using a 360-degree
compass rose diagram to identify general trends.
Observations from the topographic survey and aerial photograph review are
summarized as follows:
1962 Topographic Survey
• 26 linear features identified
• Primary group oriented northeast — southwest with 42 percent of the identified
lineaments between azimuths of 26 degrees and 63 degrees
1950 USGS Aerial Photograph
• 24 linear features identified
• Primary group oriented northeast — southwest with 63 percent of the identified
lineaments between azimuths of 17 degrees and 64 degrees
There is general agreement on 13 linear features identified with the topographic survey
and aerial photograph (approximately 50 percent).
These data indicate a predominant lineament orientation of northeast -southwest, with
relatively fewer cross -cutting lineaments of various orientations.
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3.0 DEEP BEDROCK EVALUATION FIELD PROCEDURES AND
IMPLEMENTATION
3.1 Purpose
To refine the ash basin Site conceptual model and further improve the accuracy of
model predictions being prepared for the CAP, additional bedrock wells were installed
adjacent to the ash basin dam and in areas of known impact. The locations selected for
additional bedrock evaluation are presented on Figure 3. The scope of work described
in the following text was implemented to evaluate deep bedrock groundwater quality
near the ash basin and to further refine the understanding of the bedrock fracture
system and hydraulic properties in the area.
3.2 Drilling Methodology and Well Design
Monitoring wells were installed in accordance with 15A North Carolina Administrative
Code (NCAC) 02C .0108 Standards of Construction: Wells Other Than Water Supply. Prior to
the start of drilling activities, subsurface utility scans were conducted in the area of the
proposed borings. South Atlantic Environmental Drilling and Construction Company
(SAEDACCO) conducted drilling, under contract to Duke Energy Carolinas, LLC (Duke
Energy). A qualified scientist oversaw drilling and well installation. Boring
advancement and well design/installation were similar at five of the six deep bedrock
evaluation locations. Unique conditions that were encountered at the AB-2 location
required slight variations in drilling technique and well design. The following
description applies to the five locations at which boring advancement and well
design/installation were similar:
Mud rotary drilling techniques were used to drill through unconsolidated material to
refusal (top of bedrock) at each location. These borings measured 143/4 inches in
diameter. A permanent 10-inch diameter, schedule 80 flush -joint threaded polyvinyl
chloride (PVC) outer casing was installed to the depth of mud rotary refusal. The
casing was fitted with a grout shoe seated into the top of rock and tremie-grouted into
place. Any casings that exceeded 100 feet were grouted in at least two lifts with
approximately 80 feet per lift. After the grout cured (at least 24 hours), pneumatic air
hammer technology was used to advance the boring through the 10-inch casing to a
target depth. The target depth was approximately 30 feet below the screen interval of
the deepest adjacent monitoring well where constituent of interest (COIs) were detected
at concentrations greater than standards in [North Carolina Administrative Code (NCAC),
Title 15A, Subchapter 02L, Groundwater Classification and Standards (02L)]. Once the boring
reached its target depth, a 6-inch diameter, schedule 80 flush -joint threaded PVC casing
was installed and tremie-grouted into place. Any casings that exceeded 100 feet were
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grouted in at least two lifts with approximately 80 feet per lift. After the grout cured (at
least 24 hours), the borings were advanced to a prescribed total depth (TD) of either 300
feet below ground surface (bgs) (AB-10BRL, AL-1BRL, MW-14BRL) or 500 feet bgs (AB-
1BRLLL, AL-2BRLLL). Target TD intervals were initially determined by data needs for
flow and transport model calibration of vertical impact predictions and refined in the
field based on observations during drilling.
At AB-2BR, refusal was encountered at 12 feet bgs. The shallow refusal was attributed
to large boulders that were removed from the dam area and placed in the vicinity of
AB-2 during dam construction. Pneumatic air hammering was used to advance the
boring through the obstruction to approximately 28 feet bgs. Rotary sonic drilling was
then used. A 10-inch temporary steel casing was used to help seal the borehole and
enhance recirculation for boring advancement. The temporary steel casing of the sonic
drilling mitigated the need to install a permanent 10-inch PVC outer casing. The boring
was advanced to approximately 110 feet bgs, or 14 feet below the bottom of the screen
at adjacent well AB-2D. A permanent 6-inch diameter schedule 80 flush -joint threaded
PVC casing was installed and grouted at that depth. After the grout cured (at least 24
hours), the boring was advanced via air hammer through the 6-inch casing to the target
TD of 300 feet bgs.
During the air hammer boring advancement below the 6-inch PVC casing at all
locations, the field scientist noted potential fractures based on driller and drill rig
observations. Estimated yield of water -bearing zones was determined through
downhole circulation after each 10-foot run. Upon determination of a potential water -
bearing fracture or fracture zone [yielding approximately 1 gallon per minute (gpm) or
more], a sample was collected by air -lifting formation water from the borehole. The
sample was screened for boron with a Hach TNT877 spectrophotometer. Samples were
field -filtered with a 0.45 micron (µm) filter to reduce influence of turbidity (i.e.,
suspended solids) on screening results. The Hach TNT877 test kit enables detection of
boron concentrations from 50 micrograms per liter (µg/L) to 2,500 µg/L. The presence
or absence of boron at depth is significant for refining groundwater model assumptions.
The 02L standard for boron (700 µg/L) was considered during well design.
Field boron screening results were considered during boring advancement. Screening
results are representative of a composite sample from the length of open borehole.
Boron was detected at concentrations greater than 700 µg/L at depths that were already
screened with existing wells and at some depths below the deepest existing well at AB-1
(AB-1BRLL, 205 feet bgs). Borings were advanced until reaching the prescribed TD to
help delineate the vertical extent of boron to concentrations less than the regulatory
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standard. Vertical evaluation at each location was deemed complete when the specified
TD was reached. Field screening results from each boring at TD indicated
concentrations less than the regulatory standard.
After reaching TD in each borehole, geophysical logging was conducted using the
following downhole tools: acoustic televiewer, optical televiewer, caliper, fluid
conductivity, fluid temperature, single point resistance (SPR), spontaneous potential
(SP), and heat pulse flowmeter (HPF). At two of the locations (AB-1BRLLL and AL-
2BRLLL) where elevated constituent concentrations had been identified, geophysical
logging was completed in the "upper" or "top" portion of open borehole prior to
installing the 6-inch inner casing. After the inner casing was installed and drilled
through to TD, the 'lower" or "bottom" section of the open borehole was logged. HPF
data were collected during non -pumping (ambient) conditions and pumping
conditions, except in the lower portions of boreholes AB-1BRLLL and AL-2BRLLL. Due
to flowing artesian conditions, only ambient flow HPF data were collected in the lower
portions of AB-1BRLLL and AL-2BRLLL.
At each deep bedrock well, with the exception of MW-14BRL (screen 288-298 feet bgs),
some interval of open borehole was backfilled with a bentonite clay plug. The purpose
of the backfilling was to facilitate well installation at the desired screened interval based
on field boron screening and geophysical logs. Well materials were hung (suspended
from a lift ring) to avoid casing deflection while the wells were constructed.
Screen intervals were selected based on the deepest water -bearing fracture zone and (if
applicable) the lesser of boron concentrations reported from the field screening process.
Each well consists of a 2-inch inner diameter (I.D.) schedule 40 flush -joint threaded 10-
foot prepacked screen. Screens have 0.010-inch-wide slots and were packed in the field
with a No. 2 sand filter pack. The annular space between the borehole wall/inner casing
and prepacked well screens for each of the wells was also filled with No. 2 sand filter
pack. The sand pack extends 2-3 feet above the top of the prepacked screen at each
well.
The well seal consists of at least 3 feet of coated pelletized bentonite. In some cases, an
extensive (ranging up to approximately 160 feet thick at AB-1BRLLL) column of
bentonite plug was placed above the sand pack to mitigate risk of grout intrusion into
interconnected fractures of adjacent well screens.
The remainder of the annular space was backfilled into the outer casing with
AquaGuard® via tremie pipe to reduce the risk of grout impacts. Portland cement
grout was used within the outer casing to fill the remaining annular space to ground
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surface. If the annulus was longer than 100 feet, grouting was conducted in lifts of
approximately 80 feet at a time.
Monitoring wells were completed with above -ground aluminum protective casings,
locking caps, and well tags. The protective covers were secured and completed in a
concrete collar and a minimum 2-square-foot concrete pad with bollards (with the
exception of AB-113RLLL). Due to the high traffic area on the northern portion of the ash
basin dam, AB-1BRLLL was completed with a highway -grade flush mounted vault.
The geologic logs and well installation details are provided in Attachment A.
3.3 Well Development
Installed monitoring wells were developed via air -lifting techniques (i.e., air compressor
and tremie pipe). The drilling contractor conducted development until water quality
indicator parameters (e.g., conductivity, pH, temperature) were generally stable and
turbidity was measured at acceptable levels [10 nephelometric turbidity units (NTUs) or
less]. The geologic logs, well installation details, and development records — which
include development method(s), water volume removed, and field measurements of
temperature, pH, conductivity, and turbidity — are provided in Attachment A.
3.4 Hydraulic Conductivity Measurements
Slug tests were conducted at each screened interval after well completion. Multiple
falling and rising head tests were completed at four of the six deep bedrock wells.
Artesian conditions are present at AB-1BRLLL and A13-213R; therefore, only rising head
tests could be completed at these locations. The artesian conditions are expected
because the wells are located immediately downgradient of the dam. Slug tests were
performed in general accordance with American Society for Testing and Materials
(ASTM) D4044-96 Standard Test Method (Field Procedure) for Instantaneous Change in Head
(Slug) Tests for Determining Hydraulic Properties of Aquifers and in general accordance
with North Carolina Department of Environment and Natural Resources (NCDENR)
Performance and Analysis of Aquifer Slug Test and Pumping Test Policy, dated May 31, 2007.
3.5 Deep Bedrock Groundwater Sampling
After well installation, development, and slug testing, groundwater was collected at
each well for a suite of chemistry analysis [Interim Monitoring Plan (IMP) parameter
list]. The wells were sampled after water quality parameters stabilized (per the Low
Flow Sampling Plan for Duke Energy Facilities, June 2015). Preliminary results indicate
boron concentrations were less than the lab reporting limit (50 µg/L) at five of the six
wells. The boron results for one location were slightly greater than the lab reporting
limit — 55.3 µg/L at AB-1BRLLL. Analytical results for the six deep bedrock wells are
presented in Table 1.
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4.0 BEDROCK FRACTURE EVALUATION METHODS
Deep bedrock borehole logging data was used to characterize the general depths of
flow zones (to target for monitoring well screen placement), hydraulic conductivity, the
hydraulic apertures of fractures and fracture spacing, and the in -situ orientations of
bedrock fractures. These evaluations provide a comprehensive assessment of the
bedrock fracture system in support of the CAP.
4.1 Flow Profile Characterization
FLASH (Flow -Log Analysis of Single Holes), a computer program developed by the
USGS, uses HPF data for ambient and pumping conditions to estimate transmissivity
profiles along single boreholes (Day -Lewis and others, 2011). FLASH software was
used to analyze the HPF data from the deep bedrock boreholes and generate a
transmissivity profile for each logged borehole. To produce a unique fit to the data,
FLASH estimates either transmissivity or radius of influence. All model iterations used
an estimated radius of influence of 1,000 feet. Calculated transmissivity results are
relatively insensitive to this parameter, but a conservatively large estimate was selected
in order to produce conservatively high estimates for transmissivity. The "objective
function" for the FLASH code incorporates the mean squared error between interpreted
(from borehole HPF data) and predicted flow profiles and the sum of squared
differences between the water level in the borehole and the far -field head. For each
borehole, the automated solver in FLASH ran until the objective function reached a
minimum value.
Total transmissivity for each borehole was also calculated using the Thiem Equation for
steady-state flow to a well in a confined aquifer (Thiem, 1906):
T
_ Q (ro l
In
27c(s) \rWl
where T is transmissivity, Q is flow rate, s is drawdown, n is radius of influence, and rw
is the radius of the borehole. For boreholes with a Thiem-calculated transmissivity that
was greater than the FLASH estimated total transmissivity, the transmissivity values for
borehole intervals from FLASH were scaled up proportionally to produce a total
FLASH transmissivity equal to the transmissivity value calculated for the entire
borehole.
Results from FLASH analysis of the HPF data from six boreholes are presented in detail
in Attachment B. Transmissivity values for individual bedrock intervals were divided
by interval vertical length to calculate hydraulic conductivity values, which are
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illustrated versus depth below top of bedrock on Figure 4. Measured deep bedrock
hydraulic conductivity values based on FLASH analysis range from approximately 0.02
feet per day to 510 feet per day. In general, bedrock hydraulic conductivity decreases
with increasing depth below the top of bedrock. For comparison, Figure 4 also shows
hydraulic conductivity based on slug test results for the completed deep bedrock
monitoring wells, which were screened at deep bedrock intervals with notable
fractures. Although the slug test data are fewer than the extensive FLASH -based
dataset, they fit within the upper portion of the general data distribution based on
FLASH analysis.
Most of deep bedrock borehole intervals did not indicate any notable transmissivity (or
hydraulic conductivity) based on HPF data; therefore, data related to those borehole
intervals are not included in this analysis. In addition, monitoring wells were installed
at depths interpreted to have the most significant water -bearing fractures. Therefore,
the overall hydraulic conductivity of the bedrock fracture system is less than suggested
by the data shown on Figure 4.
4.2 Fracture Hydraulic Apertures
Transmissivity data generated by FLASH were also used to estimate the average
hydraulic aperture (eh) for individual bedrock intervals applying the local cubic law
(Steele, 2006):
12Tµ
eh =
FPW9n
where T is transmissivity, µ is the viscosity of water, pw is the density of water, g is the
acceleration due to gravity, and n is the number of individual fractures in the flow
layer. Bedrock fractures are rough, so fracture widths (apertures) vary at different
points within the fracture. The hydraulic aperture is the width of an idealized parallel -
plate opening with the same transmissivity as an actual, rough -walled fracture, and it is
approximated by the geometric mean of the individual aperture values within the
fracture (Keller, 1998).
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Average hydraulic apertures were estimated for each deep bedrock borehole interval
with a transmissivity greater than zero. The number of fractures in each zone was
determined from the fracture summary table provided in the geophysical evaluation
report by GEL Geophysics, LLC (GEL) (Attachment Q. Only "open major" and "open
minor" fractures identified by GEL were included in the fracture count for each zone;
"closed" fractures were excluded. For layers without any identified open fractures but
with measurable transmissivity, one fracture was assumed present.
Based on HPF data and FLASH analysis, estimated mean hydraulic apertures of
bedrock fractures at the Site range from approximately 0.05 millimeters (mm) to 1.08
mm (50 to 1,080 micrometers, or microns) (Figure 5). In general, within the top 250 feet
of bedrock, hydraulic apertures range from approximately 0.05 mm to 0.9 mm, with a
midpoint of approximately 0.4 mm. At depths between 250 feet and 400 feet below the
top of rock, measured fracture apertures range from approximately 0.05 mm to 0.1 mm.
For comparison, Figure 5 also shows fracture apertures based on slug test results and
fracture logging data for the completed deep bedrock monitoring wells. Although these
data are fewer than those from the extensive FLASH based dataset, they fit within the
overall data distribution based on FLASH analysis.
As noted above, many of the bedrock borehole intervals logged using heat -pulse
flowmeter did not indicate any significant contribution to flow within the borehole.
Most of those intervals had interpreted open fractures but indicated negligible
(approximately zero) transmissivity; therefore, data from those intervals were not used
in fracture aperture calculations. Those depth intervals have hydraulic apertures near
zero. This fracture aperture evaluation represents only the most transmissive fractures
within each logged bedrock borehole. The overall apertures within the bedrock fracture
system are less than suggested by the data shown on Figure 5.
4.3 Fracture Spacing
Fracture spacing for each borehole interval was calculated by dividing the length of the
interval by the number of open fractures identified in that interval. For intervals that do
not have any identified open fractures and had an estimated transmissivity of zero, it is
assumed that there are no fractures in that interval; therefore, no fracture spacing was
calculated for that interval.
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Televiewer logging results (discussed below) from the combined dataset indicated
approximately 260 open fractures in 1,431 vertical feet of logging at the eight logged
bedrock boreholes, which indicates an overall average spacing of 5.5 feet (vertical
separation) between fractures. In addition, the frequency of dipping bedrock fractures
is greater than that indicated in vertical borehole data (Morin and others, 1997). Within
the investigated depth intervals, the bedrock at the Site is extensively fractured. As
indicated on the geophysical logs, fractures of various orientations often were identified
within short vertical intervals, indicating that fractures of various orientations intersect
one another and produce an overall, interconnected fracture network.
Figure 6 shows the mean vertical spacing of open fractures in bedrock intervals as a
function of depth below the top of rock, and indicates that fracture spacing is relatively
consistent with depth below the top of rock.
4.4 Fracture Orientation Plots and Statistics
GEL measured in -situ bedrock fractures at eight deep bedrock boreholes using a
combination of optical televiewer and acoustic televiewer. Data are summarized as
bedrock fracture tables, stereonet plots, and rose diagrams of fracture orientation
statistics in Attachment C. GEL classified each identified fracture as either "closed,"
"minor open," or "major open" based on flow logging or other evidence. The two
"open" classes were evaluated in terms of orientation; "closed" fracture orientations
were compared qualitatively.
Bedrock fracture orientations logged at each deep bedrock borehole indicate the
following general consistencies from location to location:
• Fractures most frequently strike toward the northeast, and dip gently to
moderately toward the southeast. The mean strike of open fractures at each
location was between north 14 degrees east (N14E) and N60E.
• The mean dip of open fractures at the logged locations was generally between 12
degrees and 42 degrees toward the southeast from borehole to borehole.
• Overall, televiewer logging results from the combined dataset indicated the
following statistics for the approximately 250 open fractures observed in 1,400
vertical feet of logging at the eight logged bedrock boreholes:
o Mean fracture strike direction (azimuth) approximately N37E
o Mean fracture dip angle below the horizontal plane approximately 30 degrees
toward the southeast
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• Secondary sets of cross -cutting fractures were also observed:
o Nearly horizontal fractures with dip angles of 10 degrees or less —
approximately 18 percent
o Fractures that strike northeast and dip toward the northwest —
approximately 10 percent
o Fractures that strike west-northwest and dip steeply south, or strike east-
northeast and dip steeply north — approximately 4 percent
Cross -sections presented on Figure 7 illustrate the predominant fracture set
(approximate strike N37E, dip 30SE) and the most abundant secondary fracture set,
which has dip angles of 10 degrees or less (approximately horizontal). These cross
sections have 5x vertical exaggeration, so the illustrated predominant fracture dip is
greater than the actual dip within the plane of the cross-section. For each cross-section,
the apparent dip of the predominant fracture set was first calculated along the general
orientation (bearing) of the cross-section; vertical exaggeration was then applied to the
calculated apparent dip. The near -horizontal fractures are all shown as horizontal for
simplicity.
The relative lengths of fractures shown on the cross -sections decrease with depth to
illustrate that, at a conceptual level, the degree of overall fracturing decreases with
depth. However, the length and spacing of fractures are conceptual and qualitative. As
noted above, the overall average vertical spacing between open fractures is
approximately 5.5 feet; therefore, fractures at the Site are too numerous to illustrate on
the cross -sections. In -situ fracture lengths are impractical to measure, but Gale (1982)
suggested that typical fracture lengths might be on the order of 3 to 4 times the fracture
spacing.
In addition to the fractures that were interpreted to be "major open" and "minor open,"
numerous interpreted "closed" fractures were reported, and their orientations were
generally consistent with those of the open fractures. However, since closed fractures
would not be expected to transmit groundwater flow, they were not included in the
assessment of fracture hydraulic aperture and spacing. The fractures observed via
televiewer and in core samples were mostly parallel to metamorphic foliation, where
present.
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4.5 Summary of Bedrock Fracture Characteristics
Overall, the bedrock hydraulic conductivity near the ash basin decreases with
increasing depth below the top of rock. This finding is consistent with the literature.
Gale (1982) showed that bedrock well yield and fracture permeability decrease
systematically as a function of depth. Neretnieks (1985) also showed a systematic
decline in bulk bedrock hydraulic conductivity with increasing depth.
Fracture spacing in the logged intervals of the bedrock are relatively consistent with
depth below the top of rock. This finding is consistent with data reported for a variety
of rock types by Snow (1968).
Overall, calculated fracture apertures decrease with increasing depth in the deep
bedrock. This finding is also consistent with information reported in the literature.
Snow (1968) published fracture aperture as a function of depth for several rock types,
including crystalline rocks such as granite, gneiss, and schist, and concluded that
fracture apertures generally decrease with increasing depth. With increasing depth, the
weight of the overlying rock increases. This increases the effective stress and causes the
fracture walls to deform and flatten, reducing fracture apertures with increasing depth.
The predominant bedrock fracture set near the ash basin strikes northeast -southwest,
which is consistent with the results of the lineament evaluation; furthermore, this
fracture set dips to the southeast. The most abundant secondary fracture set is nearly
horizontal. Fewer cross -cutting fractures were also observed, with various orientations.
4.6 Implications of Bedrock Fracture Network for Groundwater
Flow
Based on the predominant orientations of lineaments and bedrock fractures, horizontal
groundwater flow within the bedrock might occur preferentially toward the general
northeast and southwest directions (the predominant strike of bedrock fractures). The
difference in hydraulic conductivity and flow as a function of map direction is referred
to as anisotropy. Horizontal flow rates in the perpendicular map directions (northwest
and southeast) are expected to be comparatively less. However, the presence of cross-
cutting fractures, including a near -horizontal secondary fracture set, suggests that flow
can also occur in the directions of northwest -southeast. The current groundwater flow
model for the ash basin does not simulate plan -view anisotropy; therefore, it might
overestimate the bedrock hydraulic conductivity in the southeast direction and
simulated plume extent beneath Lake Norman. In areas where the vertical hydraulic
gradient is downward, as observed within the upper bedrock during ambient HPF data
collection at location AL-2BRLLL to a depth of approximately 300 feet, a component of
down -dip groundwater flow toward the southeast is expected.
Page 4-6

Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
SynTerra
The observed decline in bedrock hydraulic conductivity and hydraulic aperture with
increasing depth is consistent with expectations based on the literature and indicates
that the overall volumetric rate of groundwater flow in the bedrock decreases with
depth. Thus, although boron has been detected in groundwater at depths up to 320 feet
below the top of bedrock (63.3 µg/L in AB-1BRLLL, adjacent to the dam), at that depth
the overall mass flux of boron in the bedrock fractures is considerably less than that of
the more permeable, shallower bedrock. In addition, generally upward hydraulic
gradients and upward ambient HPF logging results have been identified at depths of
300 feet or more, limiting the depth of the boron plume in bedrock.
Page 4-7

Fractured Bedrock Evaluation December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station SynTerra
5.0 BEDROCK MATRIX DIFFUSION EVALUATION
Bedrock rock core samples were collected and analyzed by Core Laboratories (Core
Labs) for porosity and bulk density. Core Labs also conducted thin section
petrographic evaluation of each rock core sample. Data provided by Core Labs was
used in evaluating the potential effect of matrix diffusion on constituent flow and
transport within the fractured bedrock system.
5.1 Sample Selection
Seven rock core samples were selected from two locations, AL-2 and AB-1, which
represent the deepest known extent of affected bedrock groundwater (Figure 3).
Samples were chosen from intervals of rock core with the most significantly weathered
fractures to ensure analysis was representative of fracture flow conditions. Sample
locations and depth intervals are:
• AB-1:
o 100 feet bgs
o 151 feet bgs
o 204 feet bgs
• AL-2:
0 150 feet bgs
0 203 feet bgs
0 260 feet bgs
0 300 feet bgs
5.2 Matrix Porosity and Bulk Density
Core Labs prepared samples by pulling one -inch diameter plugs drilled into the rock
core and trimming into right cylinders with a diamond -blade trim saw. Samples were
then cleaned by Soxhlet extraction and oven dried at 240' F to weight equilibrium [+/-
0.001 gram (g)].
Rock core samples were analyzed for porosity using Boyle's Law technique by
measuring grain volume and pore volume at ambient conditions. Grain density values
were calculated by direct measurement of grain volume and weight on the dried plug
samples. Grain volume was measured by Boyle's Law technique.
Page 5-1

Fractured Bedrock Evaluation December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
SynTerra
Results from the matrix porosity and bulk density analysis are presented in Table 2.
The reported matrix porosity values ranged from 0.83 percent to 5.82 percent with an
average of 2.66 percent. Bulk density ranged from 2.607 grams per cubic centimeter
(g/cm3) to 2.752 (g/cm3), with an average of 2.696 (g/cm3).
5.3 Petrographic Evaluation
Thin sections were prepared by impregnating the samples with epoxy to augment
cohesion and to prevent loss of material during grinding. Each thinly sliced sample
was mounted on a slide and ground to an approximate thickness of 30 µm. Thin
sections were stained to aid in mineral identification and analyzed using standard
petrographic techniques. The thin section petrographic evaluation results are presented
in Attachment D.
Core Labs classified all samples as igneous rocks. Based on the relative abundances of
minerals (quartz, alkali feldspar, and plagioclase), the igneous rocks were classified as
granodiorite, tonalite, monzonite, and quartz monzonite. Plagioclase crystals are
extensively or locally altered into sericite/illitic clays in all of the thin section samples.
The illitic clays are present in some moldic pores and fractures.
5.4 Implications of Bedrock Matrix Characteristics for Groundwater
Flow and Transport
The reported matrix porosity values are within the range of those reported for
crystalline rocks in the literature (Freeze and Cherry, 1979; L6fgren, 2004; Zhou, Liu, &
Molz, 2008; Ademeso, Adekoya, & Olaleye, 2012). The presence of measurable matrix
porosity suggests that matrix diffusion contributes to plume retardation at the site
(Lipson, Kueper, & Gefell, 2005). In addition, the identification of sericite (a mixture of
muscovite, illite, or paragonite produced by hydrothermal alteration of feldspars) in
both samples indicates the bedrock has some capacity to sorb boron and other elements
associated with coal ash. The influences of matrix diffusion and sorption are implicitly
included in the groundwater flow and transport model as a component of the
constituent partition coefficient (Kd) term used for the bedrock layers model.
Page 5-2

Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station SynTerra
6.0 REFERENCES
Ademeso, O.A., J.A. Adekoya and B.M. Olaleye. (2012). The Inter -relationship of Bulk
Density and Porosity of Some Crystalline Basement Complex Rocks: A Case
Study of Some Rock Types In Southwestern Nigeria. Journal of Engineering, Vol.
2, No. 4, pp. 555-562
Clark, S.F., Moore, R.B., Ferguson, E.W., Picard, M.Z. (2016). "Criteria and Methods for
Fracture Trace Analysis of the New Hampshire Bedrock Aquifer." U.S.
Geological Survey Open File Report 96-479.
Day -Lewis, F.D., C.D. Johnson, F.L. Paillet, and K.J. Halford. (2011). FLASH: A Computer
Program for Flow -Log Analysis of Single Holes. Computer software. Version 1.0. U.S.
Geological Survey.
Duke Energy. (2015). Low Flow Sampling Plan, Duke Energy Facilities, Ash Basin
Groundwater Assessment Program, North Carolina.
Freeze, R.A. and J.A. Cherry. (1979). Groundwater. Prentice -Hall, Inc. Englewood Cliffs,
New Jersey. 604 p.
Gale, J.E. (1982). Assessing the permeability characteristics of fractured rock. Geological
Society of America Special paper 189.
Keller, A., (1998). High -resolution, non-destructive measurement and characterization
of fracture apertures. Int. J. Rock Mech. Min. Sci., 35(8), pp. 1037-1050.
Lipson, D.S, B.H. Kueper and M.J. Gefell. (2005). Matrix diffusion -derived plume
attenuation in fractured bedrock. Ground Water, Vol. 43, No. 1, pp. 30-39.
L6fgren, M. (2004). Diffusive properties of granitic rock as measured by in -situ
electrical methods. Doctoral Thesis, Department of Chemical Engineering and
Technology Royal Institute of Technology, Stockholm, Sweden.
Morin, R.H., G.B. Carleton, and S. Poirier. (1997). Fractured -Aquifer Hydrogeology
from Geophysical Logs; The Passaic Formation, New Jersey. Ground Water, 35(2),
328-338.
Neretnieks, I. (1985). Transport in fractured rocks. Hydrology of Rocks of Low
Permeability. Memoirs. International Association of Hydrogeologists, v. XVII,
part 1 of 2, pp. 301-318.
Page 6-1

Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
SynTerra
Snow, D.T. (1968). Rock fracture spacings, openings, and porosities." J. Soil Mech.
Found. Div., Proc. Amer. Soc. Civil Engrs., v. 94, pp. 73-91.
Steele, A., D.A. Reynolds, B.H. Kueper, and D.N. Lerner. (2006). "Field determination of
mechanical aperture, entry pressure and relative permeability of fractures using
NAPL injection." Geotechnique 56, no. 1:pp. 27-38.
SynTerra. (2018). Comprehensive Site Assessment Update — Marshall Steam Station —
January 2018. Terrell, NC.
Thiem, G. (1906). Hydrologische methoden. Leipzig: Gebhardt.
Zhou, Q., H.H. Liu and F.J. Molz. (2008). Field -scale effective matrix diffusion
coefficient for fractured rock: results from literature survey. Lawrence Berkeley
National Laboratory. https:Hescholarship.org/uc/item/3dw5c7ff.
Page 6-2

Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
TABLES
SynTerra

TABLE 1
ANALYTICAL RESULTS FOR DEEP BEDROCK WELLS
FRACTURED BEDROCK EVALUATION
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
Analytical Parameters
pH
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Chloride
Chromium
(VI)
Chromium
Cobalt
Iron
Lithium
Manganese
Molybdenum
Nickel
Selenium
Strontium
Sulfate
Thallium
Total
Dissolved
Solids
Total
Radium
Vanadium
Reporting Units
S.U.
µg/L
µg/L
µg/L
µg/L
µg/L
µg/L
Ong/L
µg/L
µg/L
µg/L
µg/L
µg/L
µg/L
µg/L
µg/L
µg/L
µg/L
mg/L
µg/L
mg/L
pCi/L
µg/L
15A NCAC 02L Standard
6.5-8.5
1*
10
700
4*
700
2
250
10
10
1*
300
NE
50
NE
100
20
NE
250
0.2*
500
5^
0.3*
Background Threshold Values
5.6-7.8
1
1.1
840
1
50
1
3.6
8.1
11.2
2.6
1,220
11.4
330
3.7
8
1
313
22.1
0.2
195
6.43
25.8
Sample ID
Screen Interval
(ft bgs)
Sample
Collection Date
Analytical Results
AB-01BRLLL
403 -413
02/05/2019
7.4
<1
1.66
84
<1
61
<1
6.3
0.025
<1
<1
140
9
325
0.825j
0.929j
0.336j
1140
81
<0.2
320
5.37
0.553
AB-01BRLLL
403 - 413
02/27/2019
7.6
<0.5
1.4
80.8
<0.1
63.3
<0.08
5.7
<0.025
<0.5
0.23
130
8
286
0.84
0.65
<0.5
1100
87.2
<0.1
349
6.29
0.42
AB-OIBRLLL
403 - 413
05/21/2019
7.4
<0.5
1.4
74.9
<0.1
55.3
<0.08
5.4
<0.025
<0.5
0.11
94.9
7.5
302
0.52
0.4 j
<0.5
1030
85.5
<0.1
352
5.21
<0.3
AB-02BR
290- 300
01/24/2019
7.6
<1
0.364 j
4.985 j
<1
<50
<1
2.2
<0.025
<1
<1
6.738 j
3.825 j
22
0.923 j
<1
<1
1100
110
<0.2
300
4.604
0.118 j
AB-02BR
290 - 300
02/26/2019
7.8
<0.5
0.39
5.6
<0.1
<50
<0.08
2.6
<0.025
<0.5
<0.1
<50
4.5
24.6
0.96
<0.5
<0.5
1200
100
<0.1
300
NA
<0.3
AB-02BR
290 - 300
05/22/2019
7.6
<0.5
0.5 B,BC
5.5
<0.1
24 j
<0.08
3
0.025
<0.5 BC
0.22
<50
3.5
26.7
0.94
0.34 j
<0.5
1120
93.8
<0.1
460
3.12
0.29 j,B,BC
AB-IOBRL
250 - 260
01/23/2019
8.0
<1
7.85
36
<1
17.193 j
<1
7
0.038
<1
<1
54 B2
3.315 j
41
3.36
<1
<1
3870
110
<0.2
340
8.72
0.387
AB-IOBRL
250- 260
02/27/2019
7.7
<0.5
6.9
32.5
<0.1
<50
<0.08
6.8
0.041
<0.5
0.088 j
96.9
1.8 j
39.6
2.2
0.3 j
<0.5
3700
69.6
<0.1
358
NA
0.58
AB-IOBRL
250- 260
05/20/2019
7.7
<0.5
5.4
30.7
<0.1
18.6 j
<0.08
4.8
0.032
<0.5
<0.1
39.6 j
2.6
36.3
0.92
<0.5
<0.5
3750
86.6 M1
<0.1
325
7.63
<0.3 BC
AL-01BRL
265 - 275
01/23/2019
7.7
<1
1.05
93
<1
<50
<1
4.1
<0.025
<1
<1
155 B2
11
356
6.51
0.624 j
<1
1430
230
<0.2
460
28.41
1.02
AL-01BRL
265- 275
02/26/2019
7.4
<0.5
1.3
94.4
<0.1
<50
<0.08
3.7
0.025
<0.5
0.14
142
10.1
346
6.2
0.74
<0.5
1440
228
<0.1
482
40.1
0.56
AL-01BRL
265 - 275
05/21/2019
7.3
<0.5
1.7
86.3
<0.1
13.7 j
<0.08
3.7
<0.025
0.47 j
0.21
198
8.5
394
4.5
0.72
<0.5
1330
214
<0.1
480
29.9
0.82
AL-02BRLLL
480 - 490
02/05/2019
7.8
<1
7.03
218
<1
24.333 j
<1
22
0.027
0.932 j
<1
773
4.566 j
218
2.8
0.835 j
<1
1170
140
<0.2
430
1.624
1.01
AL-02BRLLL
480 - 490
02/27/2019
7.9
<0.5
4.4
158
<0.1
<50
<0.08
16.9
<0.025
0.68
0.13
307
3.5
160
1.6
0.63
<0.5
973
97.1
<0.1
374
NA
0.8
AL-02BRLLL
480 - 490
05/22/2019
7.9
<0.5
7 BC
137
<0.1
38.2j
<0.08
23.5
0.045
1 BC
0.22
231
2.7
149
0.44j
1.1
<0.5
927
149
<0.1
<50
6.31
0.68 B,BC
MW-14BRL
288 - 298
01/24/2019
7.4
<1
0.499j
229
<1
<50
<1
2.2
<0.025
0.873j
<1
575
4.945j
15
1.21
0.673j
<1
272
10
<0.2
210
5.68
7.56
MW-14BRL
288 - 298
02/26/2019
7.6
<0.5
0.34
228
<0.1
<50
<0.08
2.3
<0.025 RI
<0.5
<0.1
27.6 j
5.8
2.7 j
1.7
0.39 j
<0.5
289
10.4
<0.1
211
5.57
5.5
MW-14BRL
288 - 298
05/20/2019
7.5
<0.5
0.58
224
<0.1
<50
<0.08
2.2
0.025
<0.5
<0.1
46.4 j
4.6
2.6 j
1.4
0.69
<0.5
278
9.9
<0.1
206
5.51
5.7 BC
Notes:
Background Threshold Values updated with Background Results through December 2018.
* - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April 1, 2013.
^ - Federal MCL.
< - concentration not detected at or above the adjusted reporting limit.
µg/L - micrograms per liter
B - Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than 10X the concentration in the method blank. Analyte concentration in sample could be due to blank contamination.
B2 - Target analyte was detected in blank(s) at a concentration greater than 1/2 the reporting limit but less than the reporting limit. Analyte concentration in sample is valid and may be used for compliance purposes.
BC - The same analyte was detected in an associated blank at a concentration above 1/2 the reporting limit but below the laboratory reporting limit.
j - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
Al - Matrix spike recovery was high: the associated Laboratory Control Spike (LCS) was acceptable.
mg/L - milligrams per liter
NA - Not available or Not Applicable
NE - Not established
NM - Not measured
pCi/L - picocuries per liter
R1 - Relative Percent Difference (RPD) value was outside control limits.
S.U. - Standard Units
Prepared by: PWA Checked by: GRK
Page 1 of 1

TABLE 2
POROSITY AND BULK DENSITY RESULTS
FRACTURED BEDROCK EVALUATION
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
Sample ID
Depth
(ft)
Porosity
(%)
Grain Density
(g/=m3)
Bulk Density
(g/=m3)
AB-1
100
1.23
2.692
2.662
AB-1
151
1.19
2.729
2.698
AB-1
204
0.83
2.772
2.752
AL-2
150
5.82
2.742
2.607
AL-2
203
2.93
2.780
2.708
AL-2
260
3.11
2.797
2.718
AL-2
300
3.49
2.824
2.732
Prepared by: AKM Checked by: PWA
Notes:
1. 1.0 inch diameter plugs were drilled and trimmed into right cylinders with a diamond -blade trim saw.
2. Plugs selected for routine core analysis were cleaned by Soxhlet extraction cycling between a chloroform /methanol
(87:13) azeotrope and methanol.
3. Samples were oven dried at 2400 F to weight equilibrium (+/- 0.001 g).
4. Porosity was determined using Boyle's Law technique by measuring grain volume & calculating pore volume at ambient
conditions.
5. Grain density values were calculated using Boyle's Law technique by direct measurement of grain volume and weight
on dried plug samples.
ft - feet
g/cm3 - gram per cubic centimeter
Page 1 of 1

Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
FIGURES
SynTerra

k�j
y
SOURCES: r �.
2016 LAKE NORMAN AND TROUTMAN USGS TOPOGRAPHIC MAPS OBTAINED FROM THE USGS STORE AT
hUp://store.usgs.gov/b2c_usgs/b2c/start/%%%28xcm=r3standardpilreN_prd%%%29/.do AND MODIFIED WITH
PRE -BASIN CONTOURS OBTAINED FROM A DUKE POWER COMPANY-1962a PLANT MARSHALL-UNITS 1 & 2 SITE PLAN, /
DRAWING NO. M-1, REVISION 15, DATED MARCH 19, 1987. v �. (( k i'
DUKE GRAPHIC SCALE
1000 0 1000 2000 FIGURE 1 A
40) ENERGY IN FEET
CAROLINAS DRAWN BY., J. CHASTAIN DATE: 11/8/2019
USGS MAP WITHOUT LINEAMENTS
REVISED BY:- DATE:- FRACTURED BEDROCK EVALUATION
10 CHECKED BY: P.. ALTMN DATE: 11/8/2019 MARSHALL STEAM STATION
APPROVED BY: P. ALTMAN DATE: 11/8/2019
PROJECT MANAGER: B. WILKER TERRELL, NORTH CAROLINA
synTerra F www.synterracorp.com

`-\ U
0
C,
O
m
1
LINEAMENT ORIENTATION SUMMARY
oo
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MARSHALL STEAM
STEAM STATION
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v
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180°t-
RANGE OF PREDOMINANT ORIENTATIONS
SOURCES:
2016 LAKE NORMAN AND TROUTMAN USGS TOPOGRAPHIC MAPS OBTAINED FROM THE USGS STORE AT
hUp://store.usgs.gov/b2c_usgs/b2c/start/%%%28xcm=r3standardpilreN_prd%%%29/.do AND MODIFIED WITH
PRE -BASIN CONTOURS OBTAINED FROM A DUKE POWER COMPANY-1962a PLANT MARSHALL-UNITS 1 & 2 SITE PLAN, /
DRAWING NO. M-1, REVISION 15, DATED MARCH 19, 1987.
DUKE GRAPHIC SCALE
1000 0 1000 2000 FIGURE 1 B
40) ENERGY IN FEET
CAROLINAS DRAWN BY., J. CHASTAIN DATE: 11/8/2019
USGS MAP WITH LINEAMENTS
REVISED BY:- DATE:- FRACTURED BEDROCK EVALUATION
CHECKED BY: P.N DATE: 11/8/2019 MARSHALL STEAM STATION
APPROVED BY: P.. ALTMALTMAN DATE: 11/8/2019
410 PROJECT MANAGER: B. WILKER TERRELL, NORTH CAROLINA
synTerra F www.synterracorp.com
90°

I
� II
JJ iSURFACE IMP
FUTURE MARSHALL
STEAM STATION
�U
NOVEMBER 13, 1950 AERIAL PHOTOGRAPH OBTAINED FROM THE USGS EARTH EXPLORER WEB SITE AT
(' DUKE
* ENERGY
CAROLINAS
16,
synTena
GRAPHIC SCALE
1000 0 1000 2000
IN FEET
DRAWN BY: J. CHASTAIN DATE: 11/8/2019
REVISED BY: - DATE: -
CHECKED BY: P. ALTMAN DATE: 11/8/2019
APPROVED BY: P. ALTMAN DATE: 11/8/2019
PROJECT MANAGER: B. WILKER
www.synterracorp.com
LAKE
y
OF
1% �/ FUTURE LAKE NORMAN
I
t
FIGURE 2A
1950 AERIAL PHOTOGRAPH
WITHOUT LINEAMENTS
FRACTURED BEDROCK EVALUATION
MARSHALL STEAM STATION
TERRELL, NORTH CAROLINA

LINEAMENT ORIENTATION SUMMARY
0°
A
6A
270° 90,
S&e
� II
I--,MA\
JJ iSURFACE IMP
FUTURE SHORELINE OF
LAKE NORMAN
y
ASH BASIN
i
�J
\f
FUTURE
i afL'wSTEAM
h�
6ry.
180°
RANGE OF PREDOMINANT ORIENTATIONS
SOURCE:
NOVEMBER 13, 1950 AERIAL PHOTOGRAPH OBTAINED
FROM THE USGS EARTH EXPLORER WETSIlEAl
http://earthexplomr.usgs.gov/
DUKE
GRAPHIC SCALE
40)
soon O s000 2000
ENERGY
IN FEET
CAROLINAS
DRAWN BY: J. CHASTAIN DATE: 11/8/2019
REVISED BY: - DATE: -
CHECKED BY: P.ADATE: 11/8/2019
APPROVED BY: P. ALTMAN DATE: 11/8/2019
ALTMA
PROJECT MANAGER: B. WILKER
synTerra
F www.synterracorp.com
Oro �
J .-a-
a
FIGURE 2B
1950 AERIAL PHOTOGRAPH
WITH LINEAMENTS
FRACTURED BEDROCK EVALUATION
MARSHALL STEAM STATION
TERRELL, NORTH CAROLINA

r.00
I
1.0000
0 0000
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Z' c
1 a ;
wnTerra
0,
.1000'
100010•
/♦♦
GRAPHIC SCALE
490 0 490 980
(IN FEET)
DRAWN BY: C. WYATT DATE: 08/16/2019
REVISED BY: C. WYATT DATE:
CHECKED BY: E. WEBSTER DATE: 12/16/2019
APPROVED BY: B. WILKER DATE: 12/16/2019
PROJECT MANAGER: B. WILKER
LEGEND
O DEEP BEDROCK EVALUATION LOCATION
- ROCK CORE SAMPLE LOCATION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
STRUCTURAL FILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL COMPLIANCE BOUNDARY
- - DUKE ENERGY CAROLINAS PROPERTY LINE
3111, STREAM (MCKIM & CREED)
F,07� WETLAND (MCKIM & CREED)
NOTES
1. THE WATERS OF THE US DELINEATION HAS NOT BEEN APPROVED BY THE US
ARMY CORPS OF ENGINEERS AT THE TIME OF THE MAP CREATION. THIS MAP IS NOT
TO BE USED FOR JURISDICTIONAL DETERMINATION PURPOSES. THE WETLANDS AND
STREAMS BOUNDARIES WERE OBTAINED FROM STREAM AND WETLAND
DELINEATION CONDUCTED BY MCKIM & CREED MARCH 2O16.
2. PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY CAROLINAS
3. AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 26, 2018.
IMAGE COLLECTED ON MARCH 30, 2018.
4. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NAD83).
FIGURE 3
DEEP BEDROCK EVALUATION LOCATIONS
FRACTURED BEDROCK EVALUATION
MARSHALL STEAM STATION
TERRELL, NORTH CAROLINA
m

1.0E+03
1.0E+02
T
3
C
0
u
u
0 1.0E+00
1.0E-01
1.0E-02
0 50 100 150 200 250 300 350 400
Depth (Feet Below Top of Bedrock)
•AB-10BRL FLASH
OAB-10BRL SLUG
*AL-1BRL FLASH
OAL-1BRL SLUG
• MW-14BRL FLASH
MW-14BRL SLUG
*AL-2BRLLL FLASH
OAL-2BRLLL SLUG
•AB-1BRLLL FLASH
OAB-1BRLLL SLUG
OAB-26R SLUG
NOTES
\L
t DUKE
DRAWN BY: P.ALTMAN DATE:04/15/2019
1. FLASH hydraulic Conductivity values calculated from FLASH
REVISED BY: P. ALTMAN DATE: 11/04/2019
FIGURE 4
estimated transmissivit values.
y
ENERGY..
CHECKED BY: A.LEFITZ DATE:11/07/2019
HYDRAULIC CONDUCTIVITY
2. SLUG hydraulic conductivity values estimated from slug
_iNAS
APPROVED BY: W.GERALD DATE:11/11/2019
VERTICAL PROFILE
test data.
PROJECT MANAGER: B. WILKER
FRACTURED BEDROCK EVALUATION
3. No FLASH analysis was conducted for A13-213R because heat
tip
MARSHALL STEAM STATION
pulse flow meter data was not collected under pumping
conditions.
rra
synTer7
TERRELL, NORTH CAROLINA
www.synterracorp.com

1.2
•
1.0
• •AB-10BRL FLASH
OAB-10BRL SLUG
0.8 O •AL-16RL FLASH
•
1 OAL-16RL SLUG
• •O
� • MW-146RL FLASH
L
L 0 MW-14BRL SLUG
a 0.6 • GAL-2BRLLL FLASH
U_ •
7
� OAL-2BRLLL SLUG
• • • • •AB-1BRLLL FLASH
•
0.4 OAB-1BRLLL SLUG
• • • 0AB-26R
O
•
•
0.2 •
•
•" O
r, • •O
0.0
0 50 100 150 200 250 300 350 400
Depth (Feet Below Top of Rock)
NOTES:
f�LI\LDUKE
DRAWN BY: P.ALTMAN DATE:04/15/2019
1. FLASH hydraulic aperture values calculated from FLASH
�'±
REVISED BY: P. ALTMAN DATE: 11/04/2019
FIGURE 5
estimated transmissivity values.
ENERGY:
CHECKED BY: A.LEFITZ DATE:11/07/2019
HYDRAULIC APERTURE
2. SLUG hydraulic aperture values estimated from slug test
CAPOLINAS
APPROVED BY: W.GERALD DATE:11/11/2019
VERTICAL PROFILE
data.
PROJECT MANAGER: B. WILKER
FRACTURED BEDROCK EVALUATION
3. No FLASH analysis was conducted for A13-213R because heat
tip
MARSHALL STEAM STATION
pulse flow meter data was not collected under pumping
conditions.
synTerra
TERRELL, NORTH CAROLINA
www.synterracorp.com

30
25
20
15
10
5
50 100
NOTES:
1. Fracture spacing data shown above are specific to relatively
transmissive bedrock intervals identified based on HPF logging
and FLASH analysis.
2. Fracture spacing calculated by dividing the length of the
interval by the number of open fractures identified in that
interval.
150 200
250 300
350
Depth (Feet Below Top of Rock))
DUKE
DRAWN BY: P. ALTMAN
DATE:04/15/2019
�'±
REVISED BY: P. ALTMAN
DATE: 11/04/2019
ENERGY:
CHECKED BY: A. LEFITZ
DATE: 11/07/2019
CAPOLINAS
APPROVED BY: W. GERALD
DATE: 11/11/2019
PROJECT MANAGER: B. WILKER
t'
synTem
www.synterracorp.com
*AB-10BRL
•AL-1BRL
MW-14BRL
•AL-2BRLLL
• AB-1BRLLL
400
FIGURE 6
FRACTURE SPACING
VERTICAL PROFILES
FRACTURED BEDROCK EVALUATION
MARSHALL STEAM STATION
TERRELL, NORTH CAROLINA

Figure 7
Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
ATTACHMENT A
SynTerra
BORING LOGS, WELL CONSTRUCTION RECORDS
AND WELL DEVELOPMENT LOGS

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
ABABRLLL
PROJECT NO: 1026.18.12
STARTED: 12/12/2018
COMPLETED: 1/18/2019
DRILLING COMPANY:
SAEDACCO
NORTHING: 681586.363
EASTING: 1417714.44
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 775.703
M.P. ELEV: 775.451
BOREHOLE DIAMETER:
12"/30"/6"
DEPTH TO WATER:
Artesian
TOTAL DEPTH: 500'
NOTES:
LOGGED BY:
4/12/2019 CHECKED BY: BOW
Caliper
V
5.5
(n) 8.0
W
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 1.0
w
(g I
�
HPF-Pu�mping�
0.0 0
Own)po
LL gpo
I.
E
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
Fill: Rip rap, large gravel
i
i
i
Clay: Clay, reddish brown with grey (5YR 4/4),
with trace silt, blocky, massive (FILL)
/
/
CH
T T :
Silty Sand: Silty SAND, very fine to fine grained,
T T
orangeish-grey with white mottling (7.5YR 4/6),
T T
micaceous, saprolitic in part
T T'
SM
T T •
/
T T •
/
/
Sand: SAPROLITE as sand, fine to coarse grained,
brownish grey with white inclusions (10YR 6/6),
SP-SM
silty in part, occasional gravel inclusions of partially
weathered rock, trace clay, relic rock fractures in
part
T T
T.'
T T
SM
Silty Sand: SAPROLITE as silty sand, fine to coarse
T T .
grained, yellowish brown (10YR 5/6), clay in part,
tight, laminated to thinly bedded
PWR: PARTIALLY WEATHERED ROCK,
coarse -grained to gravel, brown (7.5YR 4/3), brittle
to weak, micaceous, laminated to thinly bedded
'
Auger refusal @ 77' bgsAll
------------------------- - - - - -'
Gneiss: Biotite GNEISS, dark greenish grey (GLEY
1 4/10Y), fairly competent rock
85' Water -producing fracture zone. Field boron
screening = 1117 ug/L
mum
/
/
/
'
/
Gneiss: Grantic GNEISS, light blueish grey (GLEY 2
7/513), fine to very fine grained, Fe staining, weak,
/
micaceous
'
125' Water -producing fracture zone. Field boron
Well Cap
2" SCH 40 PVC
Riser
Grout
Grouted 10"
SCH 80 Surface
Casing
10" SCH 80 PVC
Surface Casing
6" SCH 80 PVC
Surface Casing
Aquaguarded 2"
Well
Grouted 6" SCH
80 Surface
Casing
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 1 OF 4

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
ABABRLLL
PROJECT NO: 1026.18.12
STARTED: 12/12/2018
COMPLETED: 1/18/2019
DRILLING COMPANY:
SAEDACCO
NORTHING: 681586.363
EASTING: 1417714.44
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 775.703
M.P. ELEV: 775.451
BOREHOLE DIAMETER:
12"/30"/6"
DEPTH TO WATER:
Artesian
TOTAL DEPTH: 500'
NOTES:
LOGGED BY:
4/12/2019 CHECKED BY: BOW
Caliper
V
5.5
(n) 8.0
W
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 1.0
w
(g 1
�
HPF-Pu�mping�
0.0 0
Own)po
LL gpo
screening = lUbb ug/L
130 Schist: Mica SCHIST, dark grey (GLEY 1 4/N), fine
135 to medium grained, very strong
140 Gneiss: Granitic GNEISS, greenish black (GLEY 2
2.5/513G), fine grained, very strong
145
Auger refusal @ 140' bgs
150
155
160
165
Gneiss: Continue as Granitic GNEISS
170 165-170' Fracture zone. Producing 10-15 gallons
per minute
175 Schist: Quartz SCHIST, greenish grey (GLEY 1
180 6/10Y), fine grained
170' Water -producing fracture zone. Field boron
185 screening = 1836 ug/L
190
195 195' Water -producing fracture zone. Field boron
screening = 1555 ug/L
200
Diorite: Meta -Quartz DIORITE, mostly aphanitic,
205 very slight weathering, vuggy, pyrite and chlorite
210 mineralization present
Gneiss: Biotite GNEISS, dark greenish grey,
215 fine-grained, very strong
220 220' Water -producing fracture zone. Field boron
screening = 1568 ug/L
225
230
235 -
Gneiss: Continue as Biotite GNEISS, fractured,
240 pyrite mineralization present
238' Water -producing fracture zone. Field boron
245 screening = 1756 ug/L
245' Water -producing fracture zone. Field boron
250 _ screening = 922 ug/L
Aquaguarded 2"
Well
6" SCH 80 PVC
Surface Casing
2" SCH 40 PVC
Riser
Bentonite Seal
41011 SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 2 OF 4

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
ABABRLLL
PROJECT NO: 1026.18.12
STARTED: 12/12/2018
COMPLETED: 1/18/2019
DRILLING COMPANY:
SAEDACCO
NORTHING: 681586.363
EASTING: 1417714.44
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 775.703
M.P. ELEV: 775.451
BOREHOLE DIAMETER:
12"/30"/6"
DEPTH TO WATER:
Artesian
TOTAL DEPTH: 500'
NOTES:
LOGGED BY:
4/12/2019 CHECKED BY: BOW
Caliper
V
5.5
(n) 8.0
W
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 1.0
w
(g I
�
HPF-Pu�mping�
0.0 0
Own)
po LL gpo
255
260
265
270
275
280
285
290
295
300
305
310
315
320
325
330
335
340
345
350
355
360
365
370
375
380
IDiorite: Meta -Quartz DIORITE, grey and milky
white, medium -grained
Gneiss: Biotite GNEISS, dark greenish grey,
fine-grained, pyrite mineralization present
Diorite: Meta -Quartz DIORITE, grey and milky
white, medium -grained
Diorite: Continue as Meta -Quartz DIORITE
323-327' Water -producing fracture zone. Field
boron screening = 825 ug/L
Gneiss: Biotite GNEISS, dark greenish grey,
fine-grained, fresh
Gneiss: Continue as Biotite GNEISS
385' Water -producing fracture zone. Field boron
screening = 712 ug/L
2" SCH 40 PVC
Riser
Bentonite Seal
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
3ynTerra Phone: [phone] PAGE 3 OF 4

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
ABABRLLL
PROJECT NO: 1026.18.12
STARTED: 12/12/2018
COMPLETED: 1/18/2019
DRILLING COMPANY:
SAEDACCO
NORTHING: 681586.363
EASTING: 1417714.44
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 775.703
M.P. ELEV: 775.451
BOREHOLE DIAMETER:
12"/30"/6"
DEPTH TO WATER:
Artesian
TOTAL DEPTH: 500'
NOTES:
LOGGED BY:
4/12/2019 CHECKED BY: BOW
Caliper
V
5.5
(n) 8.0
W
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 1.0
w
(g 1
�
HPF-Pu�mping�
0.0 0
Own)po
LL gpo
385
390
395
400
405
410
415
420
425
430
435
440
445
450
455
460
465
470
475
480
485
490
495
500
Diorite: Meta -Quartz DIORITE, grey and milky
white, medium -grained
Schist: Mica SCHIST, dark grey (GLEY 1 4/N), fine
to medium grained, pyrite mineralization present,
olivine, very strong
416' Water -producing fracture zone. Field boron
screening = 295 ug/L
Diorite: Meta -Quartz DIORITE, grey and milky
white, medium -grained
Gneiss: Biotite GNEISS, dark greenish grey,
fine-grained
11 Schist: Mica SCHIST, dark grey (GLEY 1 4/N), fine
to medium grained, pyrite mineralization present
451-460' Easy drilling. Water -producing fracture
zone.
Field boron screening = 480 ug/L
489' Water -producing fracture zone. Field boron
screening = 462 ug/L
Boring total depth at 500' bgs
Bentonite backfill to 413' bgs to facilitate well
construction
Screen interval 403-413' bgs
2" SCH 40 PVC
Riser
Bentonite Seal
Sand Pack
2" Slotted Well
Screen
Sand Pack
Bentonite
Backfill
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 4 OF 4

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AB-2BR
PROJECT NO: 1026.18.12
STARTED: 11/13/2018
COMPLETED: 12/7/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 680491.422
EASTING: 1417106.035
DRILLING METHOD:
Mud rotary/Air rotary/Sonic
G.S. ELEV: 778.134
M.P. ELEV: 781.059
BOREHOLE DIAMETER:
10"/8"/6"
DEPTH TO WATER:
Artesian
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.5
(n) 7.0
W
^
_
0
DESCRIPTION
>
U 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 1.0
w
a
p�
I9 I
a
��n ■
0° LL 90°
I.
E
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
Cement: Concrete
SM
Sand: Silty SAND, light yellowish brown, fine
grained, with occasional large grantic boulders,
micaceous (FILL)
Minimumal recovery. Soil lost to formation.
Sandy Silt: Sandy SILT, light tan to brown,
micaeous, with traces of clay (FILL)
ML
T T :
T T
. T T
. T T
T T
. T T
. T T
. T T
. T T
T T'
Silty Sand: Silty SAND, Reddish brown, moist,
noncohesive, micaceous (FILL)
SM
FT
•
.
Sand and Silt: SAND with silt, Dark grey and
brown, noncohesive, partially weather rock
fragments in parts (SAPROLITE/WEATHERED
ROCK)
Sp-SM
Gneiss: Biotite GNEISS, dark grey and milky white,
medium to coarse grained
Gneiss: Biotite GNEISS, dark grey and milky white,
fine to medium grained
Well Cap
Grouted 2" Well
to Surface
Grouted 6" SCH
80 Surface
Casing
6" SCH 80 PVC
Surface Casing
2" SCH 40 PVC
Riser
Aquaguard
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 1 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AB-2BR
PROJECT NO: 1026.18.12
STARTED: 11/13/2018
COMPLETED: 12/7/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 680491.422
EASTING: 1417106.035
DRILLING METHOD:
Mud rotary/Air rotary/Sonic
G.S. ELEV: 778.134
M.P. ELEV: 781.059
BOREHOLE DIAMETER:
30"/8"/6"
DEPTH TO WATER:
Artesian
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.5
(n) 7.0
W
^
_
DESCRIPTION
>
(A 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 1.0
Lu
a
p�
I9 )
a
�pn ■
0° LL 90°
130
125' Fracture zone. Minimal water produced
135
140
145
150
155
160
172-180' Water -producing fracture zone. Field
boron screening = 397 ug/L
165
170
175
180
Granite: Meta -GRANITE, dark grey with pink and
185
milky white, medium to coarse grained
190
195
200
205
'
212.5-216' Water -producing fracture zone. Field
210
` `
boron screening <50 ug/L
215
221.5' Minor fracture zone
220
225
Gneiss: Biotite GNEISS, dark grey and milky white,
230
fine to medium grained
235
237-240' Water -producing fracture zone. Field
240
boron screening <50 ug/L
245
250
Aquaguard
2" SCH 40 PVC
Riser
Bentonite Seal
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 2 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AB-2BR
PROJECT NO: 1026.18.12
STARTED: 11/13/2018
COMPLETED: 12/7/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 680491.422
EASTING: 1417106.035
DRILLING METHOD:
Mud rotary/Air rotary/Sonic
G.S. ELEV: 778.134
M.P. ELEV: 781.059
BOREHOLE DIAMETER:
30"/8"/6"
DEPTH TO WATER:
Artesian
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.5
(n) 7.0
W
^
_
DESCRIPTION
>
(A 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 1.0
Lu
a
p�
I9 I
a
�pn ■
0° LL 90°
255 Gneiss : Continue as Biotite GNEISS
260 1" 256' Fracture zone. Insignificant water production
265
270
275
280
285 298' Water -producing fracture zone.
Field boron screening <50 ug/L
290 Boring total depth at 300' bgs
Screen interval 290-300' bgs
295
300
Bentonite Seal
2" SCH 40 PVC
Riser
Sand Pack
Rubber Seal
2" Well Screen
41p SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
SynTerra Phone: [phone] PAGE 3 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AB-1OBRL
PROJECT NO: 1026.18.12
STARTED: 10/17/2018
COMPLETED: 11/13/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683732.389
EASTING: 1415493.293
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 799.345
M.P. ELEV: 801.587
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
5.90,
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.0
(n) 6.0
w
^
_
DESCRIPTION
>
(A 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.00 0.02
w
a
o
Ig I
=
a
HPF-Pumping
0.0 2
o
(9�)
po u. gpo-1111
I.
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
Ash: ASH as silty SAND, dary grey, noncohesive
SM
6
Sand: SAND with silt and gravel, light brown, with
organics, noncohesive, fine to medium grained
Sp-SM
(FILL)
Gneiss: Biotite GNEISS, dark grey and milky white,
medium grained, moderate to strong
Auger refusal @ 63' bgs
Gneiss: Continue as Biotite GNEISS
115' Orthoclase lens, easier drilling
120-130' Chlorite present on fracture surfaces
Well Cap
Grouted 2" Well
to Surface
Grouted 10"
SCH 80 PVC
Surface Casing
10" SCH 80 PVC
Surface Casing
Grouted 6" SCH
80 PVC Surface
Casing
6" SCH 80 PVC
Surface Casing
Aquaguard
2" SCH 40 PVC
Riser
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
3ynTerra Phone: [phone] PAGE 1 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AB-1OBRL
PROJECT NO: 1026.18.12
STARTED: 10/17/2018
COMPLETED: 11/13/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683732.389
EASTING: 1415493.293
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 799.345
M.P. ELEV: 801.587
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
5.90,
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.0
(n) 6.0
w
^
_
DESCRIPTION
>
(A 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.00 0.02
w
a
o
Ig I
=
a
gpo
O.OHPF-PPumpin2
o
Own)
u. gpo
130
135
140
145
150
155
160
165
170
175
180
185
190
195
200
205
210
215
220
225
230
235
240
245
250
135' Fracture zone. Insignificant water production
Gneiss: Continue Biotite GNEISS, dark grey and
white, medium grained, dry
Gneiss: Biotite GNEISS, dary grey to black,
medium grained
205-210' Fracture zone, minor water production.
Field boron screening = 244 ug/L
254-260' Water -producing fracture zone. Field
boron screening = 230 ug/L
Grouted 6" SCH
80 PVC Surface
Casing
6" SCH 80 PVC
Surface Casing
Aquaguard
2" SCH 40 PVC
Riser
Bentonite Seal
Sand Pack
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 2 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AB-1OBRL
PROJECT NO: 1026.18.12
STARTED: 10/17/2018
COMPLETED: 11/13/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683732.389
EASTING: 1415493.293
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 799.345
M.P. ELEV: 801.587
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
5.90'
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.0
(n) 6.0
w
^
_
DESCRIPTION
>
(A 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.00 0.02
w
a
o
Ig I
=
a
HPF-Pumping
0.0 2
o
Own)po
u. gpo-1111
255 - 1 t
Gneiss: Continue as Biotite GNEISS
260
265 }
270
275
280
285 Boring total depth @ 300' bgs
290 Bentonite backfill to 263' bgs to facilitate well
construction
295 Screen interval 250-260' bgs
300
2" Well Screen
Sand Pack
Sand Pack
Backfill
Bentonite
Backfill
41p SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 3 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AL-iBRL
PROJECT NO: 1026.18.12
STARTED: 10/30/2018
COMPLETED: 11/15/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683171.245
EASTING: 1417000.996
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 813.294
M.P. ELEV: 815.409
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
33.82'
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.9
(n) 6.5
w
^
_
DESCRIPTION
>
(A 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.00 0.04
w
a
o
Ig I
=
a
gpo
O.OHPF-PPumpin0
o
(9�)
u. gpo
I.
E
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
Ash: ASH, silty sand, very dark grey, noncohesive
SM
(LANDFILL)
\
—
Sand and Silt: SAND with silt, yellowish brown, fine
—=
to medium grained, moist, noncohesive,
micaceous (SOIL)
SP-SM
—
Sand and Silt: SAND with silt and gravel, yellowish
. ,
brown, fine to medium grained, soft, moist,
noncohesive (SAPROLITE)
Gravel and Sand: SAND with gravel, white to light
SP-SM
yellowish brown, fine to medium grained, most,
!... ....
noncohesive (SAPROLITE)
SP
PWR: PARTIALLY WEATHERED ROCK as Silty
SAND with gravel, light brownish grey, medium to
coarse grained, moist, micaceous
Diorite: Meta -Quartz DIORITE, light grey and
white, strong
Auger refusal @ 70' bgs
77-85' Very Strong, fresh
85-96' Fracture zone. Insignificant water
production
Gneiss: Biotite GNEISS, white and blueish white,
medium to coarse grained, fresh, very strong
Well Cap
Grouted 2" Well
to Surface
2" SCH 40 PVC
Riser
Grouted 10"
SCH 80 PVC
Surface Casing
10" SCH 80 PVC
Surface Casing
Grouted 6" SCH
80 PVC Surface
Casing
6" SCH 80 PVC
Surface Casing
Aquaguard
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
3ynTerra Phone: [phone] PAGE 1 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AL-iBRL
PROJECT NO: 1026.18.12
STARTED: 10/30/2018
COMPLETED: 11/15/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683171.245
EASTING: 1417000.996
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 813.294
M.P. ELEV: 815.409
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
33.82'
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.9
(n) 6.5
w
^
_
DESCRIPTION
>
(A 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.00 0.04
w
a
o
Ig I
=
a
gpo
O.OHPF-PPumpin0
o
Own)
u. gpo
130
135
140
145
150
155
160
165
170
175
180
185
190
195
200
205
210
215
220
225
230
235
240
245
250
Gneiss: Continue as Biotite GNEISS, white and
blueish white, medium to coarse grained
178' Water -producing fracture zone. Field boron
screening = 204 ug/L
Gneiss: Continue as Biotite GNEISS, white and
blueish white, medium to coarse grained
227' Water -producing fracture zone. Field boron
screening < 50 ug/L
Grouted 6" SCH
80 PVC Surface
Casing
6" SCH 80 PVC
Surface Casing
Aquaguard
2" SCH 40 PVC
Riser
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 2 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AL-iBRL
PROJECT NO: 1026.18.12
STARTED: 10/30/2018
COMPLETED: 11/15/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683171.245
EASTING: 1417000.996
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 813.294
M.P. ELEV: 815.409
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
33.82'
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.9
(n) 6.5
w
^
_
DESCRIPTION
>
(A 0
j
F
WELL CONSTRUCTION
HPF-Ambient
0.00 0.04
w
a
o
Ig I
=
a
O.OHPF-PPumpin0
o
iOwn)gpo
u. gpo
255
Gneiss: Continue as Biotite GNEISS, white and
260 Pq blueish white, medium to coarse grained
265 �—LN 259' Significant water -producing fracture zone.
Field boron screening = 227 ug/L
270
275
280
285 Boring total depth @ 300' bgs
290]F_� Bentonite backfill to 277' bgs
Screen interval 265-275' bgs
295
300
Aquaguard
Bentonite Seal
Sand Pack
2" Well Screen
Sand Pack
Backfill
Bentonite
Backfill
41p SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
symTerra Phone: [phone] PAGE 3 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AL-2BRLLL
PROJECT NO: 1026.18.12
STARTED: 10/17/2018
COMPLETED: 11/15/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 684635.231
EASTING: 1414836.027
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 913.009
M.P. ELEV: 915.811
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
104.40'
TOTAL DEPTH: 500'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.5
(n) 5.8
W
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
-0_3 0.1
w
(9 I
�
_
HPF-Pu�mpin9
0.0 0.4
Own)po
LL gpo
I.
E
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
Sand: Silty SAND, light brown, dry, non -plastic,
SM
%.
noncohesive (FILL)
V v Ash: ASH as silty SAND, Grey, dry, non -plastic,
noncohesive (LANDFILL)
SM
Sand: Silty SAND, reddish brown, non -plastic,
SM
noncohesive (FILL)
Sand: SAND with gravel, reddish yellow,
non -plastic, noncohesive (SAPROLITE)
SP
Well Cap
Grouted 2" Well
to Surface
2" SCH 40 PVC
Riser
6" SCH 80 PVC
Surface Casing
Grouted 10"
SCH 80 Surface
Casing
10" SCH 80 PVC
Surface Casing
Grouted 6" SCH
80 Surface
Casing
Aquaguard
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 1 OF 4

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AL-2BRLLL
PROJECT NO: 1026.18.12
STARTED: 10/17/2018
COMPLETED: 11/15/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 684635.231
EASTING: 1414836.027
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 913.009
M.P. ELEV: 915.811
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
104.40'
TOTAL DEPTH: 500'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.5
(n) 5.8
W
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
-0_3 0.1
w
(9 I
�
_
HPF-Pu�mpin9
0.0 0.4
Own)po
LL gpo
130
135
140
145
150
155
160
165
170
175
180
185
190
195
200
205
210
215
220
225
230
235
240
245
250
Gneiss: Biotite GNEISS, dark grey, milky white, and
reddish brown from oxidation, fine-grained
Gneiss: Biotite GNEISS, dark grey and milky white,
fine-grained ' 6" SCH 80 PVC
193-197' Water -producing fracture zone Surface Casing
203' Fracture zone. Insignificant water production
\ 2" SCH 40 PVC
207-212' Minor fracture zone noted during drilling.
Riser
Insignificant water production
215 217' Minor fracture zone noted during drilling.
All
Aquaguard
Insignificant water production
218-220' Minor fracture zone noted during drilling.
Insignificant water production
Grouted 6" SCH
'-
80 Surface
Casing
Diorite: Meta -Quartz DIORITE, very light grey,
medium -grained
Gneiss: Biotite GNEISS, dark grey and milky whie,
fine grained, fresh
_
243' Fracture zone. Insignificant water production
253' Fracture zone. Insignificant water production
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 2 OF 4

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AL-2BRLLL
PROJECT NO: 1026.18.12
STARTED: 10/17/2018
COMPLETED: 11/15/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 684635.231
EASTING: 1414836.027
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 913.009
M.P. ELEV: 915.811
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
104.40'
TOTAL DEPTH: 500'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.5
(n) 5.8
W
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
-0_3 0.1
w
(9 I
�
_
HPF-Pu�mpin9
0.0 0.4
Own)po
LL gpo
255
260
265
270
275
280
285
290
295
300
305
310
315
320
325
330
335
340
345
350
355
360
365
370
375
380
260-261' Water -producing fracture zone
Gneiss: Continue as Biotite GNEISS
278-282' Water -producing fracture zone
289' Fracture zone. Insignificant water production
311-315' Fracture zone. Insignificant water
production
Diorite: Meta -Quartz DIORITE, very light grey,
medium -grained
Gneiss: Biotite GNEISS, dark grey and milky white,
fine-grained, fresh
340' Fracture zone. Insignificant water production
345' Fracture zone. Insignificant water production
6" SCH 80 PVC
Surface Casing
Grouted 6" SCH
80 Surface
Casing
Aquaguard
2" SCH 40 PVC
Riser
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 3 OF 4

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
AL-2BRLLL
PROJECT NO: 1026.18.12
STARTED: 10/17/2018
COMPLETED: 11/15/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 684635.231
EASTING: 1414836.027
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 913.009
M.P. ELEV: 915.811
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
104.40'
TOTAL DEPTH: 500'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.5
(n) 5.8
W
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
-0_3 0.1
w
(9 1
�
_
HPF-Pu�mpin9
0.0 0.4
Own)po
LL gpo
385 Diorite: Meta -Quartz DIORITE, milky white,
quartz -rich, aphanitic
390 Gneiss: Biotite GNEISS, dark grey and milky white,
fine-grained, fresh
395
400
403-407' Fracture zone. Insignificant water
405 production. Field boron screening <50 ug/L
410 - Diorite: Meta -Quartz DIORITE, milky white,
quartz -rich, aphanitic
415 Gneiss: Biotite GNEISS, dark grey and milky white,
420 fine-grained, fresh
414-419' Fracture zone. Insignificant water
425 production
419-432' Easier drilling. No water production
430 455-462' Fracture zone. No water production
435
440
445
450
455
460
465
470
475 Diorite: Meta -Quartz DIORITE, milky white,
480 quartz -rich, aphanitic
Gneiss: Biotite GNEISS, dark grey and milky white,
485 fine-grained, fresh
490 481-489' Water -producing fracture zone
492-494' Water -producing fracture zone. Field
495 boron screening = 271 ug/L
Boring total depth @ 500' bgs
500 Sand backfill to 490' bas
Aquaguard
2" SCH 40 PVC
Riser
Bentonite Seal
Sand Pack
2" Well Screen
Sand Pack
Backfill
41p SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 4 OF 4

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
MW-14BRL
PROJECT NO: 1026.18.12
STARTED: 11/28/2018
COMPLETED: 12/12/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683633.297
EASTING: 1416982.707
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 809.051
M.P. ELEV: 811.765
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
27.99'
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.0
(n) 6.0
w
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 0.0
w
(9 I
�_
HPF-Pu�mpin9
0.0 0.8
(9�)
po LL gpo
I.
E
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
T T :
Silty Sand: Silty SAND, red (2.5YR 4/6), dry
T T
noncohesive, micaceous (SOIL)
SM
`
T T :
Silty Sand: Silty SAND, brown (7.5YR 5/6), dry,
T T
micaceous (SOIL)
TT'
SM
T T
T
Sand and Silt: SAND with silt, dense, reddish
/
yellow (7.5YR 6/6), mosit, with relic structure
SP SM
(SAPROLITE)
Sand and Silt: Continued as above except Brown
_
—
(7.5YR 4/4), wet
Sp-SM
/
Gneiss: Biotite GNEISS, white and blueish black,
medium grained
Auger refusal @ 56' bgs
/
/
/
/
/
/
Granite: Meta -GRANITE, dark grey to milky white,
/
medium to coarse grained
/
92' Water -producing fracture zone
/
/
/
/
/
Gneiss: Biotite GNEISS, white and blueish black,
Medium grained
;
Well Cap
Grouted 2" Well
to Surface
Grouted 10"
SCH 80 PVC
Surface Casing
10" SCH 80 PVC
Surface Casing
Grouted 6" SCH
80 PVC Surface
Casing
2" SCH 40 PVC
Riser
6" SCH 80 PVC
Surface Casing
Aquaguard
41P SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
3ynTerra Phone: [phone] PAGE 1 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
MW-14BRL
PROJECT NO: 1026.18.12
STARTED: 11/28/2018
COMPLETED: 12/12/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683633.297
EASTING: 1416982.707
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 809.051
M.P. ELEV: 811.765
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
27.99'
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.0
(n) 6.0
w
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 0.0
w
(9 1
�_
HPF-Pu�mpin9
0.0 0.8
Own)po
LL gpo
130
135
140
Gneiss: Same as above. Biotite GNEISS
145
150
155
160 167-168' Water -producing fracture zone.Field
boron screening = 400 ug/L
165
170
175 Gneiss: Continued Biotite GNEISS, weak rock
176' Fracture zone. Insignificant water production
180
186' Fracture zone. Insignificant water production
185
190
Gneiss: Continued Biotite GNEISS, strong to very
195 strong rock
200
205
210 Gneiss: Continued Biotite GNEISS, soft rock,minor
fracture zone, minimal additional water produced
215
220 Gneiss: Continued Biotite GNEISS, greyish White,
quartz -rich lens
225 Gneiss: Continued Biotite GNEISS, strong to very
strong rock
230
235
Granite: Meta -GRANITE, dark grey to milky white
240 with pink and green, medium to coarse grained, Fe
staining present
245
242' Minor fracture zone. Insignificant water
250 production
6" SCH 80 PVC
Surface Casing
Grouted 6" SCH
80 PVC Surface
Casing
2" SCH 40 PVC
Riser
Aquaguard
41011 SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
ynTerra Phone: [phone] PAGE 2 OF 3

PROJECT: Marshall Steam Station - Deep Bedrock Wells
WELL/BORING NO:
MW-14BRL
PROJECT NO: 1026.18.12
STARTED: 11/28/2018
COMPLETED: 12/12/2018
DRILLING COMPANY:
SAEDACCO
NORTHING: 683633.297
EASTING: 1416982.707
DRILLING METHOD:
Mud rotary/Air rotary
G.S. ELEV: 809.051
M.P. ELEV: 811.765
BOREHOLE DIAMETER:
12"/10"/6"
DEPTH TO WATER:
27.99'
TOTAL DEPTH: 300'
NOTES:
LOGGED BY:
ECW
CHECKED BY: BOW
Caliper
V
5.0
(n) 6.0
w
^
_
a 0
DESCRIPTION
>
V H
j
F
WELL CONSTRUCTION
HPF-Ambient
0.0 0.0
w
(9 I
�_
HPF-Pu�mpin9
0.0 0.8
Own)po
LL gpo
255 Gneiss: Biotite GNEISS, white and blueish black,
medium grained
260
Granite: Meta -GRANITE, dark grey and milky
265 white, massive, fine to medium grained
270 Gneiss: Biotite GNEISS, white and blueish black,
medium to coarse grained
275
280
285
290 295' Water -producing fracture zone. Field boron
screening <50 ug/L
295 Boring total depth @ 300' bgs
Screen interval 288-298' bgs
300
Aquaguard
2" SCH 40 PVC
Riser
Bentonite Seal
Sand Pack
2" Well Screen
41p SynTerra CLIENT: Duke Energy Carolinas, LLC
148 River Street, Suite 220 PROJECT LOCATION: Terrell, NC
Greenville, South Carolina 29601
symTerra Phone: [phone] PAGE 3 OF 3

WELL CONSTRUCTION RECORD
Thh FOrnI S-0n be used FN 5i ngk 9r m ll ipk wells
1. Wdl Cantractor Informallon:
Rich Lemire
Well {orlilrixilyr tininIC
2593A
NC Well Corlr,,IciorCerlikoLiorkNinikber
SAEDACCO Inc
{'mlkpui4 NanIC
2, Wtil C,,0n%tFVCti0H Psrgeit �l
List Lffli7pp6 aWr i6ell plairnri t1_Y'. Cfwjlf4'_ .52dw, YaFiunre, ffWGR rjr.0
3, WJ11 Use {cheer, w 0l u ale):
MAIg,Timultural O 11micipaVFttblic
OGeDihemtal tHeaultKocling Apply) OResidenlial WaluSupph, (single)
0I1KfUSnia1fCOD1nMc1ial DResidential Waler 5uppb: (shared)
❑lrri tion
Nom-wstff Su P�y Well:
phlpnilnr-44 ❑RCctr3 Cr}'
QAglriCCF RCcha%g
13AS111ikF Storage aTxJ RCCG%v7
❑AgilifQF T
❑ExivEim ffiml TrxhnGLpg.%-
❑GJ odkernml iC lased Limp)
❑Gmdtemlal ftAwiR-'Cboline Rrwnsl
❑GroUndvl'AICF 'RC1k"i714iGn
❑Salinity Hafiiu
❑540rrm atCr E"Lnagc
11,151" Kc-CorMml
❑TFacrr
❑OIILer WXDI9ifi D2Idu1 -" 1 1
4. D4te WeII(s) Conkplelcd, 12/20/2018 Well TDB AB-10BRL
5r1_ %}VL11A1ratien:
DUKE ENERGY
MARSHALL PLANT
Facilil} C1 ' - I � = r, Facllil+' 1T)k fif afpplimhlet
8320 NC-150 Sherrills Ford, NC 28673 Catawba Count,
SHERRILLS FORD, NC, 28673 Physical Address_ City_ and Zip
CATAWBA
For Frworiki14'sc ON I.Y:
rRQ.M I
T4
RF:ti{'HCP 11{}
11.0UTER CASINO For
akY14 asrd ncls
06t LIKER L!
Ncabk
FROM
TO
pf#bMR
ICK., M
I MATFRTAI•
0 fL.
62' fL
10" in,
SCH80
PVC
i6. MFR CALSI NG OR 7T'RING 4VM1k-FJkkal dusedauulr
FRO TO� 7TIICINF.SS MATERIAL
0 is.
158' FL
6" "�
SCH80
PVC
0 F4
250' rti
2" iwr,
SCH40
PVC
250'ft� 1
260' f1•
2" ia.
010
PVC
rL
ft.
ia.
rSCH40
it1. GMUT
FAON
TO
MATEMAL
TM7LALTHQT 51ET1I01P d hNOL:NT
030' D-
247' fL
AQUA GUARD
TREMMIE
0 4.
30, k
PORTLAND
TREMMIE
263 1141300
I'L
BENTONITE
POURED
VR4111 j 14 MILTFRIA3. F:'r3MAC'}'ME-41-MYTHEM
247' Or 263' ft, SAND #2
i ft. ft,
ln. DR11LLIDFG
lAG allach
J1d4filianHI wheel, it r me
rR0'H
TO
OF.S(' RIFT 1fjN. Su6r,%Ar,
0 (L
62 fL
RED SILTY CLAYS
62' fL
300 ft
ROCK
ft,
rt
fL
fL
rl,
rt,
fi,
Fw
Ft,
BENTONITE BOTTOM 300'-263' AND 242'-247' 1
Gummy PARC1 IdCnlsf" iun No fR1_^1}
ib. l.pTitu& Arul 1.nngitaliC in IICgmrdmiFmU*1wci)nIIF. nr ck-cimnl degrocs:
22, CrrdFieatian:
4IFIACIS JkJrJ I51t hV1113vl IN Milk k 111
35.593739 N 80.965932 }}'
lid
vVC� 12/20/2018 .
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6. Is i aivI Ihrt weIllJlk 5OFunrku ent u r 111'emportlry
BT ri nm Jlru f frd'Fd n- Lw rh r the wd Y Ir y wrm nuaYrnn'redr iR ff xwrUm c[
_ s x 1�'r. rrf.�� +�. + � l
%'Jr1r fS�i JYG'1tls 02C ,Ufr1�P Pr � i,+t JYG'11L' {��' ,� 14'efJ �OJrdtRJCG41r StaRlfardb �rJld rlllrr a
7. is that a rrimir to an exisvtn%wrell. --J'Ycx Ilr [@ Nip
"y of rAii rem Fd hm .5€FH wAli" ra Aw givgi Sri jwn
1f 0fs Jx rr frl*iir, f+y,,wr trei,ww i-di o, t+ fun riche rnlor7,wWai 4mrl exgifabi rAe ownwFe of rAr
repair under il7f FCfAf rky.ya-iiaR OF rm the r5ea-k of rfii.-e fo J31.
y y 1 y i �y 1
23', She d iaWho n or ad♦311II nal well drfaik;
You may 3kse take back of this page to provide additional wdl site details or well
S.1lumhcraf wills fiiktlslt trtd: 1
WnsiYurCioll details. You rria_+' also auachaddilicmat pages if uecessan .
for Irtkke(Je JrtfeerJwi of rJfxl-warer u' ' wetly ONLY mrA die senrra 7so% s Aw. }%,4 [aid
,iabmirime form.
SUBMITTAL fNSTUCT7ONS
9. Tolid Trtll depth be&m loll$ surfikm 260' (fi,)
24a. Ear All Wrilx: Subniii Iius farm wilbin xU days of compkiioo of wet I
FoFrrtilirlRjC wetk IfsrrrDdrf.0f rjdi femrle.w wpfe,- 3@Z47iiJ' Lgmd 2@;AR}
Con5lnlCt1pn to 4hc folLouing-
IU.Stuicn�4erle�ell5rtloli' h} ofcJilih 26' IIy,I
birixiunaFWgur kezources, Informatirm VruccsuiuV, Unit,
If M]Oefi Ir'd es 4410 a CUdOW. uu' "+
16171Nait :SCrt'irC {_Cuter, Raleigh, i4C 27699-1617
11. Bmrhole diameter: 14.3/4"-5. 5" gmj
tab. For Iniectios Weill ONLY: In addition io sending 4he foTt;r1 to e1w address in
24a nb(we. also VhMit a cop of this farm within zp days of cDnipleiiott of t++ell
I L WC1l CORIilrnCj0rp rllothod, MUD ROTARY/AIR
conSlruuLiall 11) like 15000„'illg:
4i.e. ailptr. nAaFy, cable_ diem pushctc.l
Dh'ision oRV4'xter RrnourcrN.lfrtJcrpvuod Iojcclioll Control Program,
FOR WATER SUPPLY WELLS ONLY.
1636 Mail Srr vilx'Center. Raleith, NC 23699-1636
13a Vio(I (qm) ?Nahrull of test'
24r- For W4W Sp * 1n"1X1`ion Vtr'ft
Also Submit One Copy of this form %tiithin 30 days ofconrplelion of
13b. DWHR-criun Ilper Amount:
wdl cnosinirtian to the ¢rnmr; health depurait t of the rrxuay whom
-
QVFk5 TpCtW
Faiin GW-L Nonh Caroli as D,pernnrJlt DIEM iloiUMILI 31d Narilra] %.wu1ccs - Dii rs roe of Woor Raney Rt, Iscd ALIgust 2913

WELL CONSTRUCTION RECORD
Thh FOrn1 S-0n be used FN 5i ngk 9r m ll ipk wells
1. Wdl Cantractor Informallon:
Rich Lemire
Well {orlilrixilyr tininIC
2593A
NC Well CorlrmorCerlikoLiorkNiolkber
SAEDACCO Inc
{'MikpuiF NanIC
2, Wtil C,,0n%tFVCti0H Psrgeit �l
List afTl i7pp6 aWr i6ell plairnri t1_Y'. Cfwjlfy'_ .52dw, YaFiunre, ffWGR rjr.0
3, W41 Use (check w 01 u ney
MAIg,Tii:ultural O 11micipala"Wic
OGeDihemtal tHeati kKocling Apply) OResidenital WaluSupph, (single)
0IIIdus4ria1fCOD1nMU1ial DResiden(ial Waler 5uppb: (shar+edp
❑lrri tion
Nom-wstff Su P�y Well:
phlpnilnrin.Lz ❑RCctr3 Cr}'
QAglriCCF RCcha%g
13AS111ikF Storage aTxJ RCCG%v7
❑AgllifQF T
❑ExivEimCnini TrxhnGLpg.%-
❑Geodkernml IC'Insed Limp)
❑Gmdkemral McAnneCboline Rrwnsl
❑GroUndvl'AICF 'RC1k"i714iGn
❑Salinity Hafiiu
❑540rrm atCr E"Lnagc
11,151" Kc-CorMml
❑TFacrr
❑OIILer WXDI9ifi Dikiu1 -" 1 1
4. Ditte WeII(s) Conkplelcd; 12/19/2018 well TDB AL-2BRLLL
50_ k}cL11A1ratinn:
DUKE ENERGY
MARSHALL PLANT
Facilil} C1 ' - I � = r, Facllil+' 1T)k fif avplimhlet
8320 NC-150 Sherrills Ford, NC 28673 Catawba Count,
SHERRILLS FORD, NC, 28673 Physical Address_ City_ and Zip
CATAWBA
Gummy PARC1 IdCsilsf yliun No. (PIN)
For Frworikil 4rw ON I.Y:
rRQ.M I
T4
RF:ti{'HCP 11{}
11.0UTER CASING For
akil4 asral ncls
06t LIKER L!
Ncabk
FROM
TO
pf#bMR
ICK., M
I MATFRTAI•
0 fL.
140' FL
10" io,
I SCH80
PVC
]b. MFR CALSI NG OR 7T'RING 4VM1k-FJlkal dusedauup
FRO TO� 7TIICINF.S4 MATERIAL
0 is.
375' FL
6" "�
SCH80
PVC
0 F4
480' Fti
2" ii1k
SCH40
PVC
480'ft�
490' f1•
2" ia.
010
PVC
ft
ft.
ia.
rSCH40
18. CII UT
FROM
T4
NATEMAL
EMRT,ALTHQT 5IEn10D d hNOL:NT
90' D-
472 FL
AQUA GUARD
TREMMIE
0 4.
90' &
PORTLAND
TREMMIE
472 t4
477 FL
BENTONITE
POURED
rRoll 113 MATFRL43. F:'r3MAC'}'ME-41-MYTH n
477' Or 500' rt, SAND #2
3n, DRILL1MG LOG fal4mh alddilionHI sheet, it nrcemml
0 Ft. 140' A. COAL ASH
140' (L 500' F4, ROCK
R, rL
R. FL
Fi. Fr.
Tx, ri,
IBENTONITE BOTTOM 490'-500'SET WELL AND BENTONITE I
A
ib.1-mitmic Awl 1 nng4wpv in IICXr'xwinrmr#CS skmon11s nr kwin u1 IlegrCi'S.
22, ('erdfirailn:
41fKCIS fs_ L1 I51t IiWI1113vl IN Milk k 111
35.593739 N 80.965932 }}'
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vVC� 12/19/2018 .
SigmffwFc arc-cFti _ %mi Canlracwi Dak
6.11s i afvI Ihrt welllJik 5OFunrku ent u r 111'emporllry
1r,, rigmy dlrufr f Jrd',,by,YFii# rh r the wd4mo Iri01Y (wemi nuaYrnn'redr iR ffdxwmm c[
%'Jr1r fS�i JYG'lt tv' 02C ,Ufr1�P Pr � i,+t JYG'11L' {��' ,�i[717 WeU {'OJdtRlCG41r Sta Rll'af�b arJld rlallr a
7. is that a rrimir to an exisvtn%wril. --J'Ycx Ilr [@ Nil
"y of Fhii rem Fd hm .5€FH wAli" ra Aw givgi �r jwn
1f 0fs Jx rr frl*iir, f+y,,wr trei,ww i-di o, t+ fun riche rnlor7,wWai 4mrl exgifabi rAe ownwFe of rAr
repair under il7f FCfAf rky.ya-iiaR OF rm the r5ea-k of rfii.-e fo J31.
y y 1 `� y �y 1
23, She d iawk klnl or addlllmuil well arrant:
You may 3kse t31e back of This page to provide additional wdl site details or well
S.1l umhcr of wa`Ils toueilttirctrtd: 1
WnSIf irliorl details. You rria_+' also auach addilicmat pages if uecessan .
for Irtkin(e JrtfeerJwi of rorvi-wbrer mph- weth ONLY mrA die seaera 7so% s Aw. }%,4 [aid
Aabmirimeform.
SUBMITTAL INSTUCF7ONS
9. Tolid wtll depth be&m loll$ surfom 490' (,)
24a. Ear All Wrilx: Subniii Iles farm williin xU Days of compkiioo of wet I
FoFrrrilirlpiC wetk IfsrarDdrf.0f rjdi femrle.w wpfe,- 3@ZM' Lgmd 2@;AR)
Con5lnirtipn to 4hc FoRmting-
l U. Stztir weer levri below h}p. of casing, 141' (fiJ
bi%-Wun aFVI'atr:r kezources, Informatiou Frnccsuiog Unit,
If M]Oefi Ir, rl es 4410 a CUdOW. uu' "4 "
16171Nait Sirsiee {_Cuter, Raleigh, i4C 17699-1617
11. Bmrhole diameter: 14.3/4"-5. 5" gmj
tab. For Iniectiaa Weill ONLY: In addition io sending 4he form to elk: address in
24a nb(we. also submit a cop of this farm within zp days of C6nipleiioil of t++ell
I L WCjj CORIijrnCt10r1 "lief od, MUD ROTARY/AIR
cooSlYuuLii nl 11) like 15000„'irkg:
4i.e. ailptr. nAaFy, cable_ diem pushcic.l
Dh'isiotl oRV4'xter RrAourcr>,.lfeldcrpvuod Iojcclioll Control Program,
FOR WATER SUPPLY WELLS ONLY.
1636 Mail Srrvirx'Center. R.21 th, NO 23699-1636
13at, Vio(I (qm) ?Nahrull of test'
24r- For Wj4W Sp * In"gtriou V4'ft
Also Submit One Copy of this form %tiithin 30 days of conrp4el ion of
13b. bi.inkc6in hper Amount:
wdl cnoslnrctian to the ¢rnmr; health depurait t of the rrxua' whom
-
QVFk5 TpCtW
Faiin GW-L Nonh Caroli as D.�riflkCJIE DIEM iloiUMILI 31d N111" %.Wurecs - Dii as roe of Woor Ravin Rt, Iscd AL&MIt 2913

WELL CONSTRUCTION RECORD
Thh FOrn1 S-0n be used FN 5i ngk 9r m ll ipk wells
1. WdI Cantractor Informallon:
Rich Lemire
Well {orlilrixilyr tininIC
2593A
NC Well Corlr,,IciorCerlikoLionNinikber
SAEDACCO Inc
{'Mikpui} NanIC
2, Wtil C,,OnstFVCti0n Psrgeit fl
List Lffli7pp6 aWr i6ell plairnri t1_Y'. Cfwjlf4'_ .52dw, YaFiunre, ffWGR rjr.0
3, Wv11 Use (check w 0l u ney
MAlgmultural O 11micipaVFttblic
OGeDihemtal tHeaultKocling Apply) OResidenital WaluSupph, (single)
0I1KfUSnia1fCol1merc1ial DResiden(ial Waler Suppb: [shllnA
❑lrri tion
Nom-wstff Su P�y Well:
phlpnilnr-44 ❑RCctr3 Ca}'
QAglriCCF RCcha%g
13AS111ikF Storage aTxJ RCCG%v7
❑AgilifQF T
❑ExivEim ffiml TrxhnGLpg.%-
❑Geodlernml IClosed Limp)
❑Gmdtennal ftAwiR-'Cboline Rrwn11
❑GroUndvl'AICF 'RC1k"i714iGn
❑Sahnity Hafiiu
❑540rrm atCr E"Lnagc
11,151" Kc-CorMml
❑TFacrr
❑OIILer WXDI9ifi Dildu1 -" 1 1
4. D4te Wells) Conlplelcd, 12-12-2018 Well TDB MW-14 BRL
5r1_ %}VL11A1ratien:
DUKE ENERGY
MARSHALL PLANT
Facilil} Ca ' - I � = r, Facilil,' 1Dk fif afpplimhlet
8320 NC-150 Sherrills Ford, NC 28673 Catawba Count,
SHERRILLS FORD, NC, 28673 Physical Address_ City_ and Zip
CATAWBA
For Frworiki14'sc ON I.Y:
rRQ.M I
T4
RF:ti{'HCP 11{}
11.0UTER CASINO For
ouW rasnl ncls
06t LIKER {it
lkabk
FROM
TO
pf#bMR
ICK., M
I MATFRTAI•
0 fL.
56' fL
10" in,
SCH80
PVC
i6. MFR CALSI NG OR 7T'RING 4VM1k-FJllal dusedauulr
FRO TO� 7TIICINF.S4 MATERIAL
0 is.
136' FL
6" "�
SCH80
PVC
0 F4
288 iti
2" �
SCH40
PVC
288'ft� 1
298' f1,
2" ia.
010
PVC
1t.
ft.
ia.
rSCH40
10. CMUT
FROM
To
NATEMAL
EM7LACSMQT 51FT1I01P L AMOL:NT
24' R
276' R.
AQUA GUARD
TREMMIE
0 0.,
24' IL
PORTLAND
TREMMIE
276' t4
286' FL
BENTONITE
POURED
FR4711 j 14 MILTFRrAJ. F:'r]MAC'}'ME-41'11}'THEM
286 Or 301' ft, SAND #2
i ft. ft,
0 (L
56' rL
RED SILTY CLAYS
56' fL
301' fL
ROCK
(L,
rL
fL
ft
rl,
rt,
fi.
Fw
Fa,
rt,
IL REMAXKS
BENTONITE ABOVE SCREEN 276-2861.
Gummy PARC1 IdCsilsf yliun Na fPIN^
ib. l.plitu& Arul 1.nngitaliC in IICgmrdmiFmU*1wci)nIIF. nr ck-cimnl degrocs:
22, CrrdFieatian:
4IFIACIS fs_IrJ IrIk: IiW911I3S IN Milk k 111
35.593739 N 80.965932 W
v�C� 12/18/2018 .
SigmffwFc arCclti _ %mi Canlracwi Dak
6. Is i aivI Ihrt weIllJlk 5OFunrku ent u r 111'emporury
BT ri nm alru f frd'Fd n- Lw rh r the wd Y Iri01Y wrm L,VRYii -Jedr iR ff xwrUm c[
_ s x 1�'r. rrf.�� +�. + � l
%'Jere fS�i JYG'1tls 02C ,Ufr1�P Pr � i,+t JYG'11L' {��' ,� 14'efJ �OJrdtRJCG41r StaRll'af�b �rJld rlJlrr a
7. is diiN a rrimir to an exisvtn%wrell. --J'Ycx Ilr 19 Nip
"y of rAii term Fd hm .5€FH wAli" ra Aw givgi Sri jwn
If Mfs Jx rr frl*iir, f+y,,wr trei,ww i-di o, t+ fun riche rnlor7,wWai 4mrl exgifabi rAe ownwFe of rAr
repair under il7f FCfAf rky.ya-iiaR OF rm the r5ea-k of rfii.-e fo JII.
y y 1 y i �y 1
23', She 1 iaWhom or Jdi3l1Ional well drfaik;
You may ,Ise t31e back of this page to provide additional wdl site details or well
S.1lumhcraf wills i1ltlsll tld: 1
WnsiYurCiorl details. You rria_+' also auachaddilicmat pages if uecessan .
for Irtkke(Je JrtfeerJwi of rJFNI-warer u' ' weth ONLY mrA My seaera 7so% s Aw. }%,4 [aid
Aabmirrr eform.
SUBMITTAL INSTUCTIONS
9. Tolid Trtll depth be&m laud surfikm 298' (,�
24a. Ear All Wrilx: Subniii Iius farm williin xU Days of compkiioo of wet I
FoFrrtilirlRjC wetk IfsrrrDdrf.0f rjdi femrle.w wpfe,- 3@ZM' Lgmd 2@;AR}
Con5lniCt1pn to 4hc folLouing-
l U. Stair weer levri belaW h}p. of calsihr 26lly,l
birixiun aFVI'ater kezources, lnformatiou Fruccsuiog Unit,
If M]Oefi Ir'd es 44I014' CUdOW. uu' "+
1617 Mail 9crt'irC {_Cuter, Raleigh, 1iC 27699-1617
11. Bmrhole dismrror, 14.3/4"-5. 5" gmj
tab. For Iniectios Weill ONLY: In addition io sending 4he fom to e1w address in
24a nb(we. also submit a cop of this farm within zp days of Canipleiioil of t++ell
I L WCjj CORIijrnCt10r1 nlpethod, MUD ROTARY/AIR
conSlYuuLii nl 11) lire 15000wirlg:
4i.e. ail--,'tr. nAaFy, cable_ diem pushctc.l
Dh'isiotl oRV4'xter RrnourcrN.lfrtJcrpvuod Iojcclioll Control Program,
FOR WATER SUPPLY WELLS ONLY.
1636 Mail Srr virx'Center. Raleith, NC 23699-1636
13a vioai (qm) Mahnd of test'
24r- For W4W Sp * 1n"1X1`iou V4'CLIs:
Also Submit One Copy of this forni %tiithin 30 days of conrp4el ion of
13b. but HR-C#iqm 11per Amount:
wdl cnoslnirtian to ttm ¢rnmr; health depurait t of the rrxuay whom
-
Cpn5MCtW
Faiin GW-L Nonh Carali as D,pernnrJlt DIEM iloiUMILI 31d Narilra] %.wu1ccs - Dii rs roe of Woor Ravu1M, Rt, Iscd ALIgust 2913

WELL CONSTRUCTION RECORD
Thh FOrnI S-0n be used FN 5i ngk 9r m ll ipk wells
1. Wdl Cantractor Informallon:
Rich Lemire
Well {orlilrixilyr tininIC
2593A
NC Well Corlr,,IciorCerlikoLiorkNinikber
SAEDACCO Inc
{'mlkpui4 NanIC
#, Wtil C,,0n%tFVCti0H Psrgeit �l
List Lffli7pp6 aWr i6ell plairnri t1_Y'. Cfwjlf4'_ .52dw, YaFiunre, ffWGR rjr.0
3, WJ11 Use {cheer, w 0l u ale):
MAlg,Tii:ultural O 11micipaVFttblic
OGeDihemtal tHeaultKocling Apply) OResidenlial WaluSupph, (single)
0I1Kflsnia1fCol1merc1ial DResiden(ial Waler 5uppb: [sharedp
❑lrri tion
Nom-wstff Su P�y Well:
phlpnilnr-44 ❑RCctr3 Cr}'
QAglriCCF RCcha%g
13AS111ikF Storage aTxJ RCCG%v7
❑AgilifQF T
❑ExivEim ffiml TrxhnGLpg.%-
❑GeodkernmL lC'luxed Limp)
❑Gmdlemlal ftAwiR'1Cboline Rrwnsl
❑GroUndvl'AICF 'RC1k"iajiGn
❑Sahnity Hafiiu
❑540rrm atCr E"Lnagc
11,151" Kc-CorMml
❑Tray T
❑oilier 4mlain Doder #21 1
4. D4te WeII(s) Conkplelcd, 12/21/2018 well 1Dp ALIBRL
5rI_ %}VL11A0VAtNln:
DUKE ENERGY
MARSHALL PLANT
Facilil} C1 ' - I � = r, Facllil+' 1T)k fif afpplimhlet
8320 NC-150 Sherrills Ford, NC 28673 Catawba Count,
SHERRILLS FORD, NC, 28673 Physical Address_ City_ and Zip
CATAWBA
For Frworiki14'sc ON I.Y:
rRQ.M I
T4
RF:ti{'HCP 11{}
]&oLrTER CASING For
akYt4 asrd ncls
06t LIKERfif
Ncabk
FROM
TO
pf#bMR
ICK., M
I MATFRTAI•
0 fL.
70' fL
10" in,
SCH80
PVC
i6. MFR CALSI NG OR 7T'RING 4VM1k-FJkkal dusedauulr
FRO TO� 77fffiNF.S4 MATERIAL
0 is.
151' FL
6"
SCH80
PVC
0 F4
265 rti
2" iwr,
SCH40
PVC
265'FL
275' f1•
2" ia.
010
PVC
rL
ft
ia.
rSCH40
it1.I;II UT
FAON
To
MATEMAL
TM?LACEHQT 51FTII01P L hNOL:NT
35' ft-
258' fL
AQUA GUARD
TREMMIE
0 4.
35' n
PORTLAND
TREMMIE
258 1141263
rl,
BENTONITE
POURED
rRoll 1
4 MATFRL43. F:'r3MAC'}'ME-41-MYTH n
263' ftr 277' fi, SAND #2
tt, ft.
3n, D1i3LL1MG LOG fat4mh addilionHI sty , if nrcemml
0 (L
70' fL
RED SILTY CLAYS
70' fL
300' ft
ROCK
fe,
rt
fL
fL
rl,
rt,
1i,
Fr.
Fa,
BENTONITE BOTTOM 277'-300',TOP 258'-263' 1
Gummy PARC1 IdCsilsf tyliun Na fR1_^1}
ib. l.plitu& Arul 1.nngitaliC in tl+vgl' rdmilkvU*1wci)ntlJ` nr ck-cimnl degrocs:
22, CrrdFieatian:
4IFIACIS fs_IrJ I51t hV1113vl IN Milk kn11
35.593739 N 80.965932 }}'
vVC� 12/21/2018 .
SigmffwFc arCclti _ %mi Canlracwi Dak
6. Is i afvI Ihrt welllJik 5OPer-manent u r 111'emporllry
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_ s x 1�'r. rrf.�� +�. + � l
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7. is that a rrimir to an exisvtn%wrell. --J'Ycx Ilr 19 Nip
"y of rAii term Fd hm .5€FH wAli" ra Aw givgi Sri jwn
If Mfs Jx rr frl*iir, f+y,,wr trei,ww i-di o, t+ fun riche rnlor7,wWai 4mrl exgifabi rAe ownwFe of rAr
repair under il7f FCfAf rky.ya-iiaR OF rm the r5ea-k of rfii.-e fo ui.
y y 1 y i �y 1
23', She d iaWhom or 3klidtllmull well drfaik;
You may 3kse tlke back of this page to provide additional wdl site details or well
S.1lumhcraf wills toueilttilctrtd: 1
WnsirurCioll details. You rria_+' also auachaddilicmat pages if uecessan .
for Irtkke(Je JrtfeerJwi of rJfxl-warer u' ' wetly ONLY mrA air senrra 7so% s Aw. }%,4 [aid
Aabmirrr eform.
SUBMITTAL INSTUCTIONS
9. Tolid Trtll depth be&m loll$ surflkm 275' (l'I,)
24a. Ear All Wrilx: Subniii Iius faro) wilbin 0 days of compkiioo of wet I
FoFrrrilirlRjC wetk IfsrrrDdrf.0f rjdi femrle.w wpfe,- 3@Z47it+' Lgmd 2@;AR)
Con5lnlCt1pn to 4hc folLouing-
IU.Stuicn�4erle�ell5rtloli' h} ofcJilih 26' lly,I
bir6iun ofWgur kezources, Informatirm VruccsuiuV, Unit,
If M]Oefi Ir, rl es 44I014' CUdOW. uu' "+
16171Nait :SCrt'irC {_Cuter, Raleigh, i4C 27699-1617
11. Bmrhole diameter: 14.3/4"-5. 5" gmj
tab. For Iniectiaa Weill ONLY: In addition io sending 4he fom to e1w address in
24a nb(we. also VhMit a cop of this farm within zp days of Canipleiioil of t++ell
I L WC1l COnlllrnetiort nlothod, MUD ROTARY/AIR
conSlruuLiall 11) like 15000„'illg:
4i.e. ailptr. nAaFy, cable_ diem pushctc.l
Dh'isiott oRV4'xter RrAourcr>,.lfeldcrpvuod lojcctioll Control Program,
FOR WATERSGPPLY WELLS ONLY.
1636 Mail Srrvilx'Center. Raleith, NC 27699-1636
13a Vio(I (qm) Mahnd of test'
24r- For W4W Sp * 1n"1X1`ion Vtr'ft
Also Submit One Copy of this folrrl %tiithin 30 days ofconrplelion of
13b. DWHR-c#iun Ilper Amount:
wdl cnosinirtian to the ¢rnmr; health depurait t of the rrxuay whom
-
Faiin GW-L Nonh Caroli as D,pariflkCJIE DIEM iioiUMILI aid Narilra] %.wu1ccs - Dii rs roe of Woor Raney Rt, Iscd ALIgust 2913

WELL CONSTRUCTION RECORD
Thh FOFnI S-0n be used Fax 5i ngk 9r m ll ipk wells
1. Wdl Cantractor Informallon:
Rich Lemire
Well {orlilrixil 7 tininm4
2593A
NC Well Corlr,,IciorCerlikoLiorkNinikber
SAEDACCO Inc
{'mlkpui4 NanIC
#, Wtil C,,0n%tFVCti0H Psrgait fl
List Lffli7pp6 aWr i6ell plairnri t1_Y'. Cfwjlf4'_ .52dw, YaFiunre, ffWGR rjr.0
3, W41 Use (check w 01 u ney
MAlg,Timultural O 11micipaVFttblic
OGeOihemtal tHeatiltKocling Apply) OResidenlial WaluSupph, (single)
0I1Kflsnia1fCOD1nMc1ial DResiden(ial Waler 5uppb: [sharedp
❑lrri tion
Nom-wstff Su P�y Well:
phlpnilnrin.Lz ❑RCctr3 Ca}'
QAglriCCF RCcha%g
13Aq11ikF Storage aTxJ RCCG%v7
❑Agf1ifCF T
❑ExivEimCnini TrxhnQLpg.%-
❑Geodkernml lC'losed Limp)
❑Gmdkennal McAnneCboline Rrwnsl
0GF0Unda't4CF 1RC1k"iajiGn
❑Sahnity Darni r
❑540rrm atCr E"Lnagc
❑Tray T
❑oilier 4explain under #21 1
4. Ditte WeII(s) Conkpleled, 1/03/2018 We11 1Du AB-2BR
SJI_ %�VLI 1A0rat6e11:
DUKE ENERGY
MARSHALL PLANT
Facilil} Ca ' - I � = r, Facllil+' 1T)k fif afpplimhlet
8320 NC-150 Sherrills Ford, NC 28673 Catawba Count,
SHERRILLS FORD, NC, 28673 Physical Address_ City_ and Zip
CATAWBA
For Frworiki14'sc ON I.Y:
FRQ.M I
T4
RE:ti{'HCP 11{}
11.0UTER CASING Far 1akYt4
asrd ncls
G LIKER L!
Ncabk
FROM
TO
pf#bMR
T 7711CK., M
I MAITRTAI•
0 fL.
110 fL
6" in,
SCH80
PVC
]b. MFR CALSI NG OR 7T'RING 4VM1k-FJkkal dused4um!p
FROM TO� 7T1f iNF.S4 MATERIAL
0 is.
110' FL
6"
SCH80
PVC
0 F4
290' fti
2" iwr,
SCH40
PVC
290'1t�
300' (1•
2" ia.
010
PVC
R
it
ia.
rSCH40
its. CIIU47'F
FROM
T4
NATEMAL
TM7LACEHQT 3IEn101P d AMOL:NT
20' (L
149' FL
AQUA GUARD
TREMMIE
0 0.,
20' &
PORTLAND
TREMMIE
149' t4
287 FL
BENTONITE
POURED
VR4711
14
j MATFRL43.
E:'r3MAC'}'ME-41-MYTHEM
287'
Or
300'
fi,
SAND
#2
tt,
fr,
3n, DR11LL1f1;
lAG OaUl Iaeh
4ld4filiomI wheel, it rCmezlari
FRO-4
TU
PF.y['REPT1fJN ikuhr,%Ardnwn, VdVnK:6j5pC. pxmirl mimc',cwt.I
0
fL
88'
fL
FILL/RED SILTY SAND
88'
(L
300
fL
ROCK
fe,
rL
fL
fL
fi.
ft,
Fi.
Fr.
Tx,
ri,
BENTONITE FROM 149' TO 287'.ARTISIAN WELL
Comm y PARC1 IdCsilsf yiivri No fR1_^1}
ib. l.plitu& Arul 1.nngitaliC in tlavgl'eeslminrrU*1wCE}ntlF. or ck-cimnl degrocs:
22, CrrdFieatian:
41fKCIS fs_IrJ I51t hV1113vl' IN Milk kn11
35.593739 N 80.965932 }}'
vVC� 1/3/2019
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6. Is i aivI Ihrt welll&k 5OPer-manent u r 111'emportlry
BT ri AM alru f frd'rd n- Lw rh r the ,red Y m y wrrr nuaYrnn'redr iR d xvrAmOiY
_ s x 1�'r. rrf.�� +�. + � l
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7.lsthazarrimirtaanexisvtn%wrell. --J'Ycx Ilr [@Nip
"yofrAiirem Fdhmld'.5rm wAli"raAwgivgi�rijwn
1f 0fs Jx rr frl*iir, f+y,,wr trei,ww i-di o, t+ fun riche rnlor7,wWai 4mrl exgifabi rAe ownwre of rAr
repair under il7f FCfAf rky.ya-iiaR OF rm the r5ea-k of rfii.-e fo ui.
y y 1 y �y 1
23', She d iaWho n or 3klidlllmull well drfaik;
You may 3kse take back of this page to provide additional wdl site details or well
S.1lumhcraf wills fiiktlslt trtd: 1
CDnsiYurLioll details. You rria_+' also auachaddilicmat pages if uecessan .
for mtkke(Je JrtfeerJwi of rJfxl-warer u' ' weth ONLY mrA air seaera 7so%o Aw. }%,4 [aid
Aabmirime form.
SUBMITTAL CNSTUCT7ONS
9. Tolid Trtll depth be&m mall$ surfom 300' (b,)
24a. Ear All Wrilx: Subniii Iius faros wilbin xU days of compkiioo of wet I
FoFrrtilirlRjC wetk IfsrrrDdrf.0f rjdi femrle.w wpfe,- 3@ZM' Lgmd 2@;AR}
Con5lnlCt1pn tajhc FoRmting-
l U. Suair weer levri below lop. of caisihey +3.8' IIy,I
birixiun aFVI'ater kezources, Informatiou lhrocessiog Unit,
If M]Oe.fi Ir' d es 441O a CUdO g_ uu' "4 "
16171Nait :SCrt'irC {_Cuter, Raleigh, i4C 17699-1617
11. Bmrhale dismrrcr: 10"/5. 5" (ilk)
tab. For Iniectiaa Weill ONLY: In addition io sending 4he fom to e1w address in
24a nbm'e. also submit a cop of this farm within zp days of Canipleiioil of t++ell
IL WCjj CORIijrnCt10rt nli3$1 od, SONIC/AIR
conSlYuuLiall 11) like 15000„'illg:
4i.e. ailptr. nAaFy, cable_ diem pushctc.}
Dh'ision oRV4'xter RrAourcrN.lfrtJcrpvuod lojcctioll Control Program,
FOR WATER SUPPLY WELLS ONLY.
1636 Mail Srr vilx'Center. Ikaleith, NC 23699-1636
13at, Vida (tlpml) ?NahrA of test'
24r- For Witter' Sp * Fn"gtriun V4'CLIs:
Also subulit One Copy of this form %tiithin 30 days of conrp4el ion of
13b. bimink-cliqm Ilper Amount:
wdl cnosinirtian to the cower; health depurait t of the rrlwuay whom
-
Qp11j'MCtW
Faiin GW-L Nonh Caroli as D.pernnrJIE DIEM iloiUMILI aid N11011 %.Wurccs - Dii rs roa of Woor Ravul!�, Rt, Isild ALIgust 2913

WELL CONSTRUCTION RECORD
Thh FOrn S-0n be usod FN 5i ngk 9r m0l iuk wells
1. Well Contractor Informallon:
John Eisenman
WC-)l -COP4rdd DT t+iAFM
4439-A
NC Well Corlr.morCerlikoLiorkNiollber
SAEDACCO Inc
{'mlkpui4 NanIC
2, Wtil C',011jtFVCti0H Psrgeit fl
List lfll d7pp6i aWr i6ell plairdes t1_Y'. Cf1YIlh'..52dw, Yariunre, ffWGR rjr.0
3, Wv11 Use {cheer, w 0l u ale):
ElAIg,Timulturifl ON11 nicipala"Wic
OGeDlhemtal tHealiFkKoaling Apply) OResidenital WaluSupph, (single)
0I1KfUSnia1fCOD1nMU1ial DResiden(ial Waler Suppb: (shliredI
❑lrri tion
)glom-;' stff Suy Well:
phlpniiof- Lz ❑RCctr3 CT}'
QAglriCCF RCcha%g
13AS111ikF SIOTage ATsd RCCG%v7
❑AgllifQF T
❑ExivEim ffiml TrxhnGLpg.%-
❑Geodkernml lC'luxed Limp)
❑Gmdkemlal McAnneCboline Rrwn11
❑GroUndvl'AICF 'RCIk"iaji9n
❑Sahnity Haniu
❑540rrm atCr E"Lnagc
11,151" Kc-CorMml
❑TFacrr
❑01lker WXDI9ifi Dikiu1 -" 1 1
4. Ditte WeII(s) Conkpleled; 1-15-19 Well Typ AB-1BRLLL
5rI_ k}cLI LAkCatllkn:
DUKE ENERGY
MARSHALL PLANT
Facilil} Ca ' - I � = r, Facllil+' 1T)k t;f avplimhlep
8320 NC-150 Sherrills Ford, NC 28673 Catawba Count,
SHERRILLS FORD, NC, 28673 Physical Address_ City- and Zip
CATAWBA
Cuotlq}' PARC1 IdCsilsf tyliun No. (PIN)
ib, l.plitu& ilwl 1.nngitPdv in IICgmrdminvU*1 cnndF. nr ck-cimRl degrocs:
;IfKCIS fs_IJ I51tIiW'l1113l'1%%I111h:kn1l
For Lw i,,l 4rsc ON I.Y:
rRQ.M I
T4
RF:ti{'HCP 11{}
]1.OUTER CASINO for
akYll asrd ncls
06t LIKERfif
Neabk
FROM
TO
Rf#bMR
ICK., M
I MAITRTAI•
0 fL.
80 fL
10" in,
SCH80
PVC
i6. MFR CALSI NG OR 71'RING 4VM1k-rvlkal duseda�rulr
FRO TO 9TIICINF.Ss MATERIAL
0 is.
242 FL
6
SCH80
PVC
0 F4
413' k
2" i0k
SCH40
PVC
413'FL 1 403' f1• 2" ia. 010 rSCH40 PVC
R ft I ia.
10. CMUT
FROM TO MATEMAL TM7LALTHLNT 31LT1101P d hNOL:NT
234 (L 3 iL AQUA GUARD TREMMIE
4. rlp
04 rl,
TV. SAN DIGPLAVEL PA[ K if I!
rRoll lr] MATFRL43. F:'r]MACTAIF: tiTMFTllrin
F16t. 397 ft, SAND #2
t,ft.
MCI DG fal4mh alddiliolkal ill , if nC'e£51 ml
0 fL
90 rL
silt/clay
90 fL
501' fL
ROCK
(e,
rL
fL
ft
rl,
rl
lZ.
Fr.
rx,
ik,
IBENTONITE BOTTOM OF HOLE FROM 501-416 THEN I
ABOVE S
22, Cserif-wz6an:
35.593739 80.965932 }}'�w
1-19-19
Sismrlalcnf" �v�r.•;:�--' —� Ualc
6.11s jars) Ihrt well)&k 5OFunnarlent ur 111'emporar}'
?? ,`° ; ? dunrrnfe'rdy! in acx ordmurr $s signo�� driT fw,K �f.� h:
%Yrltfs JVCACO2C.'�; �• eiLR. ",L4',0 Wet; CzmfrwrimSraWants4vdATra
7. is thin a repair to an exist n%wrell. --J'Ycx Ikr 19 Nip
crpy 4f rhii nw Fd hm .5rm wmi" r+ Abe nrll!.mwn
f/fhfs rx rr wroth, f+y,,wr trei,ww i-di o, t+ fan riche eirlorY weWai 4mrl expfabi rAe ownwre of Me
repair under A71 Finarky.ya-iian OF rm fhe heal of ffii.-e fo ui.
y y 1 y i �y 1
23, She d laWk am Or addlllmkal well dtfalli:
You may ,kse like back of This page to provide additional wdl site details or well
S.1l umhcr of wills tOnalttirctld: 1
WnsirurCion details. You rria_+' also auach addilicmat pages if uecesssn .
for mtkke(Je rrtfeerlwi of r1rvi-wbrer u' ' 4eth ONLY mrll rflr seaeraorrso%w. Sou. }%,4 [aid
Aabmirm,r form.
SUBMITTAL INSTUCF7ONS
9. Totid wtll depth be&m laud surfam 413 (,�
24a. Ear All Wrilx: Subaru) lies farm wilbin 0 days of compkiioo of well
FoFxriliflRjC wetly Irsrrrff drfubi f Ef0F mr 1ey( wpfe,- ?@ZM' awlf 2@;AR)
Con5lmCt1pn to the folLouing-
IU. Stitir weer levri below h}p. Of casihey +1 (fl.l
bi%-Wun aFVI'ater kezources, lnformatiou Fruccsuiog Unit,
If nlelrrfi fir, d es 4410l4' CUdOW. uu' '•+ "
1617 Mail 9crt'irz Center, Raleigh, XC 27699-1617
11. Bmrhole diameter: 14.3/4"-5. 5" gmj
tab. For Iniectiaa Weill ONLY: In addition io sending the fum 1D e1w address in
24a nbm'e. also submit a cop of this form within zp days of canipleiioik of t++ell
I L WCII CORIilrnetiorl rnbthod, MUD ROTARY/AIR
cooSlYuuLiink Lo' like 15000wiakg:
4i.e. ail--,'tr. renal}', cable_ diem pushcic.)
Dh'ision o£V4'xter Rrnourcr>,.ltrtdcrpvuod lojcctioll Control Program,
FOR WATERSGPPLY WELLS ONLY.
1636 Mail Srrvilx'Center. Raleith, NC 23699-1636
13A. vioai (qm) ? ahrid of test'
24r- For Wj4W SP * In"gtrion V4'tft
Also submit One copy of this fumnl %tiithin 30 days of conrp4el ion of
13b. bi.inkc6in hper Amount:
wdl cnoslnlctian to the ¢rnmr; health depurait t of the rouF y whem
-
Can5MCtW
Faiin GW-L Nonh Carolina Dk.�pariflkCJIE DIEM iloiuikrlu aid Hari" %.WU ccs - DiirsroeorWoor Ravin Rt, Iscd AL&MIt2u13

GROUNDWATER WELL DEVELOPMENT
DUKE ENERGY- PROGRESS, INC
0
synTerra
148 River Street, Suite 220
Greenville, South Carolina 29601
[phone] . [phone] Fax
www.synTerracorp.com
WELL DEVELOPMENT LOG
FIELD PERSONNEL:
WEATHER: ❑ SUNNY OVERCAST ❑ RAIN TEMPERATURE (APPROX):g0 F
WELL ID: - I&,LL,
MEASURING POINT: TOC
WELL DIAMETER: 2 IN
WELL DEPTH: (FT)
DEPTH TO WATER: (FT)
DEVELOPMENT METHOD:
NOTES: , 1-. K
START DEVELOPMENT TIME/DATE: l a I 1 2 1 V
END DEVELOPMENT TIME/DATE: Jq I Zb
TOTAL VOL PURGED:
❑ Grundfos Pump ❑ 12 Volt Pump ❑ Polyethylene Bailer V& A. C L ITT
DATE
TIME
I
TEMPERATURE
VOL
(° Celsius)
DO
CONDUCTANCE pH
ORP*
i
TURBIDITY*
NOTES
(NTU)
0•�
(mg/L)
(VS/CM)
(su)
(mV)
du
�Z
/00
/
'
,-a
7.1
130b
SO
,r
A06
?1'1
- z I
III(,
3► D
Zoo
1
-7.
*4 1
- 7-r
320
300
Li 3 7
-7.4
- z
1 Z
^
O
LA
_ Z
34 •`at
330
�p
,o-
H 2S
-11b1�)
- 3
31.1
,cif tl,� -P 11
0
`^
1 VA
-za O
.19
— I '3
`
ceA 6, k+-V ItGGD
100
'^'700
��
y 3 3
-A or
- i
1 sA
AID
�"'lj"� i
0111
He`d
"].92
—2'1
14-
PTO
11• Z
b ble s teL+ s 1
� s.�.tIKVT.eS
4vYb ® -Ti,
COMMENTS: FIELD VEHICLE ACCESSIBLE ❑ YES ❑ NO
TO
ID.c�14+C. 1.,� �� Z�b
d.R. 4 `fwrk jl, J4 flu� w�
Associated midday/end-of-day DO, conductivity, pH within range? (See cafjbration sheet for this sample datdTb YES ❑ NO. CC I .
If NO, which parameter . NOTE that reported data should be considered as flagged accordingly.
* SynTerra is not NC -certified for these parameters. Data collected for information purposes only
WELL TAG PROTECTIVE CASING LOCK CAP CONCRETE PAD
.... ..........
❑ GOOD! ❑ BAD ❑ NONE ❑ GOOD — ❑ BAD ❑ NONE 1 ElGOOD BAD ❑ NONE [IGOOD []BAD ❑ NONE ❑ GOOD ❑ BAD NONE
V\ LA DO wc:1,t,
p6-fr+i a 4DO' — 3.09 •v396,91164
0
f3r� F��r"� IhG
caws is -/^�l ; c �t�,r►K�
4i"oI I
P:IDuke Energy Progress.1026100 FIELD PAPERWORK1Well Development Log.doc

GROUNDWATER MONITORING
WELL DEVELOPMENT
DUKE ENERGY
10
synTerra
148 River Street, Suite 220
Greenville, South Carolina 29601
[phone] . [phone] Fax
www.synTerracorp.com
WELL DEVELOPMENT LOG
FIELD PERSONNEL:
WEATHER: ❑ SUNNY ❑ OVERCAST G RAIN TEMPERATURE (APPROX): iveF
WELL ID: B. 2-K
MEASURING POINT: TOC
WELL DIAMETER: 2 IN
WELL DEPTH: 30D (FT)
DEPTH TO WATER: (FT) . A e-,ecsk,
DEVELOPMENT METHOD: ❑ Grundfos Pump
NOTES:
START DEVELOPMENT TIME/DATE: � 1ys
END DEVELOPMENT TIME/DATE:
TOTAL VOL PURGED:
ID .,wit vpl � w9o,G l
❑ 12 Volt Pump ❑ Polyethylene Bailer
DATE
TIME
VOL
TEMPERATURE DO
CONDUCTANCE
pH
ORP`
TURBIDITY"
NOTES
(° Celsius)
(mg/L)
(µS/cm)
(su)
(mV)
(NTU)
33aj
cf. 66
1 751
5b.9 z
--,3(p • L
2,70
rew S
PI D
3 O
/
D
'R
9:6-3
'_ / ?
, Q t
l /6 la/ e
�7
C��r
74.5
i . ` �'-)
66 rb .M
� ten♦.
1-
COMMENTS: FIELD VEHICLE ACCESSIBLE 0 YES ❑ NO
Associated midday/end-of-day DO, conductivity, pH within range? (See calibration sheet for this sample date) ❑ YES ❑ NO.
If NO, which parameter . NOTE that reported data should be considered as flaiaged accordingly.
" SynTerra is not NC -certified for these parameters. Data collected for information purposes only
WELL ROTECTIVE CASING LOCK CAP CONCRETE PAD
C,OOD ❑B�AD�GOOD ❑BAD ❑NONE GOOD II ❑NONE OOD ❑BAD ❑NONE OOD ❑BAD I ❑NONE
frl
,ate,
C:1UserslbwilkerlDocumentslWell Development Log.doc

GROUNDWATER MONITORING
WELL DEVELOPMENT
DUKE ENERGY
WIELL DEVELOPMENT LOG
410
FIELD PERSONNEL:
synTerra
WEATHER: ❑ SUNNY ❑ OVERCAST V&IN TEMPERATURE (APPROX): /U quF
148 River Street, suite 220
Greenville, South Carolina 29601
NOTES: �' #� [C,
T
(864) 42.1-999991964) 421-9909 Fax
www.synTerracorp.com
_ — — — -
WELL ID: fib I J96A&
START DEVELOPMENT TIME/DATE:
MEASURING POINT: TOC
END DEVELOPMENT TIME/DATE:
WELL DIAMETER: 2 IN
TOTAL VOL PURGED: ZZ
WELL DEPTH: CJ (FT)
1 I _ 1
vIi3Y�4�
DEPTH TO WATER: `� Z ii-T,
V
C
(
DEVELOPMENT�. ME 1100 [IGrundfos Pump ❑ 12 Volt Pump ❑Polyethylene Bailer
TEMPERATURE
DO
CONDUCTANCE
pH
ORP'
TURBIDITY'
NOTES
DATE
TIME
VOL
_
(° Celsius)
L
(mg/L)
(AS/CM)
(su)
(mV)
(NTU)
,
,�-
v
?
�t
-s�
- -
0
I
I
rIo
CorL
�82,
t�!• 4.
VA
q,IS
ICI
0 r
j
2-1� �I
—US-, —I
q,-1
W94-
a2
I
6
COMMENTS:
NO
Associated midday/end-of-day DO, conductivity, pH within range? (See calibration sheet for this sample date) ❑ YES ❑ NO.
If NO, which arameter NOTE Chat reported data should be considered as flagged accordingly.
* SynTerra is not NC -certified for these parameters. Data collected for information purposes only
PROTECTIVE CASING LOCK CAP CONCRETE PAD
WELL TAG - -
❑ GOOD ❑BAD ��]%NONE OD ❑BAD �❑ NONE ❑GOOD qNE DOD ❑BAD ❑NONE OOD ❑BAD ❑NONEBAD
C:\Users\bwilker\Documents\Well Development Log.doc

GROUNDWATER MONITORING
WELL DEVELOPMENT
DUKE ENERGY
WELL DEVELOPMENT LOG
synTerra
148 River Street, Suite 220
Greenville, South Carolina 29601
[phone] • [phone] Fax
www.5ynTerracorp.com
WELL ID: L — I PIL
MEASURING POINT: TOC
WELL DIAMETER: 2 IN
WELL DEPTH: 271 JQI(FT)
DEPTH TO WATER: 3;2 iFT)
DEVELOPMENT METHOD:
FIELD PERSONNEL:
WEATHER: ❑ SUNNY O'MVERCAST ❑ RAIN TEMPERATURE (APPROX): ' F
NOTES: t1►r r JJF A� CC CI
START DEVELOPMENT TIME/DATE:
END DEVELOPMENT TIME/DATE: # 'Z 6
TOTAL VOL PURGED: ` J
31.SiCtilons
❑ Grundfos Pump ❑ 12 Volt Pump ❑ Polyethylene Bailer
DATE
TIME
VOL
TEMPERATURE
I* Celsius)
DO
CONDUCTANCE
pH
ORP*
TURBIDITY*
NOTES
(mg/L)
(PS/CM)
(su)
(mV)
(NTU)
�1
ct-(30
7-1
PE IQ
24.2
��.5� ►�
'L l
lo
-i6
S
Cy"
f
b n
COMMENTS: FIELD VEHICLE ACCESSIBLE,0 YES ❑ NO
Associated midday/end-of-day DO, conductivity, pH within range? (See calibration sheet for this sample date) ❑ YES ❑ No.
If NO, which parameter . NOTE that reported data should be considered as flagged accordingly.
* SynTerra is not NC -certified for these parameters. Data collected for information purposes only
WELL TAG PROTECTIVE CASING I LOCK CAP
--
❑ GOOD ❑BAD NE OOD ❑BAD ❑NONE ❑ GOOD BAD NONE GOOD ❑ BAD ❑ NONE
C:\Users\bwilker\Documents\Well Development Log.doc
CONCRETE PAD
GOOD ❑ BAD ❑ NONE

GROUNDWATER MONITORING
WELL DEVELOPMENT
DUKE ENERGY
WnTerra
148 River Street, Suite 220
Greenville, South Carolina 29601
[phone] • [phone] Fax
www.synTerracorp.com
WELL DEVELOPMENT LOG
'� )
FIELD PERSONNEL: 7C- W
WEATHER: ❑ SUNNY q&VERCAST ❑ RAIN TEMPERATURE (APPROX�� F
NOTES: 4,r Z rb n
WELL ID: 77 L Z G LLI L
MEASURING POINT: TOC
WELL DIAMETER: 2 IN
WELL DEPTH:
DEPTH TO WATER:
START DEVELOPMENT TIME/DATE:
END DEVELOPMENT TIME/DATE:
(FT)
M(Fr) y To,)
TOTAL VOL PURGED
j r -2- Iq•-/S
z (� 5'5
6��-
DEVELOPMENT METHOD: ❑ Grundfos Pump ❑ 12 Volt Pump ❑ Polyethylene Bailer
DATE
TIME
VOL
TEMPERATURE
(° Celsius)
DO
(mg/L)
CONDUCTANCE
(PS/CM)
pH
ORP"
TURBIDITY"
NOTES
(su)
(mV)
(NTU)
12-1
ze,
`f S S
(� , �
�,��
3�3
�
a�. -
9.,3-1-
3.s •L.
(5P-
--
A,6
D,O
-2+(�
rye e
. d
'Ld
� 0
400 IT5&,
I'
1515
1' 3•d5
,
151S`0
5 ; . ,
, I
1�1 &3—
3, -S
COMMENTS: FIELD VEHICLE ACCESSIBLEOYES ❑ NO
Associated midday/end-of-day DO, conductivity, pH within range? (See calibration sheet for this sample date) ❑ YES ❑ NO.
If NO, which arameter . NOTE that reported data should be considered as flagged accordingly.
" SynTerra is not NC -certified for these parameters. Data collected for information purposes only
WELL TAG
PROTECTIVE CASING LOCK
CAP CONCRETE PAD
_............. _
... ........ — -- ---
❑ GOOD I ❑ BAD ❑ NONE
ODD ❑ BAD ❑ NONE ❑ GOOD ❑ NONE
OOD ❑ BAD ❑NONE GOOD ❑ BAD ❑ NONE
I
C:Wserslbwilker0ocumentslWell Development Log.doc

Instrument Calibration Log
1417 SynTerra Corporation
148 River Street, Suite 220
synTerra Greenville, South Carolina 29601
NC Field Parameter Certification No. SS91
Instrument ID: YSI Professional Plus
Serial #: /a�1�+'�s�Kr sls.� Date:
Analyst: Location: l /
pH Initial Calibration (standard units)
Reference Method: SW846 9040C
Cal. Time
Cal. Buffer
Cal. Buffer
Cal Buffer
Check Buffer Measured
Value
4.0 1
7.0
10.0
-71
*pH buffer checks are to be within ± 0.1 pH units of the standards true value
4 Buffer Reference: 10 Buffer Reference:
7 Buffer Reference: Check Buffer Reference:
nH Calibration Check lstandard unitsl
Time
Check Buffer True Value
*Check Buffer Measured Value
Mid -Day
7.0
End -of -Day
7.0
Other
*pH buffer checks are to be within ± 0.1 pH units of the standards true value
Check Buffer Reference: Action Required:
Specific Conductance (umhos/cm)
Reference Method: SW846 9050A
Time Calibration Standard True Value Verification standard Measured Value
Initial Cal I ZD(s A-4W)- / 1423
Mid -Day 1409
End -of -Day I I 1409
*Verification standard ± 10 percent of the standards true value
Calibration Standard Reference: Verification Standard Reference:
Action Required:
Dissolved Oxygen (mg/L)
Reference Method: SM 4500 CI G-2001
Time
Temp
Barometric
Meter DO
Correction
DO at
Theoretical T
°C
Pressure (mm
Reading
Factor
Temperature
DO
H
m L
m L
m L
Initial*
r2D$
, [%
7y�� 3
/b,b�
/v.31
�v. /c"
Mid -Day
End -of -
Da
*Initial meter calibration
Theoretical DO = DO from "Dissolved Oxygen Meter Calibration Verification' Table at ambient temp X Correction Factor at Barometric Pressure
Theoretical DO and Meter DO reading within ± 0.5 mg/l, if not recalibrate meter.
Action Required:
P:1Duke Energy Progress.1026100 FIELD PAPERWOWCalibration FormslNC Instrument Calibration Form Rev7 Prof Plus.doc

GROUNDWATER MONITORING
WELL DEVELOPMENT
DUKE ENERGY
WELL DEVELOPMENT LOG
synTe ra
148 River Street, Suite 220
Greenville, South Carolina 29601
[phone] • [phone] Fax
www.synTerracorp.com
WELL ID: 'o
MEASURING POINT:
TOC
WELL DIAMETER:
2 IN
WELL DEPTH:
z�f� (FT)
DEPTH TO WATER:
77ri'al (FT)
DEVELOPMENT METHOD:
FIELD PERSONNEL:
WEATHER: ❑ SUNNY Ci3 OVERCAST ❑ RAIN TEMPERATURE (APPROX):
NOTES:
START DEVELOPMENT TIME/DATE: r � yz `f
END DEVELOPMENT TIME/DATE: f�
TOTAL VOL PURGED:
❑ Grundfos Pump ❑12 volt Pump ❑ Polyethylene Bailer
DATE
TIME
TEMPERATURE
VOL
7 i-- (° Celsius)
DO
CONDUCTANCE
(145/Cm)
pH
ORP'
TURBIDITY"
NOTES
(mg/L)
(su)
(mv)
(NTU)
9
141V
,3yq— I
157
4(, 3 3
t t-s
7.83
— 37. 2
13-2
�
b
-
�YG. 2
g.oZ
—G r
X- 7Z
a<7 r�.v
O.f
Zy
—3.
1 .lb. l
i3Vu
9-36
s
g.2y
-G$/
z.ZI
725-
A911
eal ron . .C6+
COMMENTS: FIELD VEHICLE ACCESSIBLE ['YES ❑ NO
Associated midday/end-of-day DO, conductivity, pH within range? (See calibration sheet for this sample date) ❑ YES ❑ No.
If NO, which parameter . NOTE that reported data should be considered as flagged accordingly.
SynTerra is not NC -certified for these parameters. Data collected for information purposes only
WELL TAG
OTECTIVE CASING
/
LOCK
CAP
CONCRETE PAD
OD ❑ BAD
❑ NONE
GOOD
❑ BAD
❑ NONE
��
Ly000D
BO
❑ NONE GOOD
❑ BAD
❑ NONE f
j
LpI GOOD 1 ❑ BAD i ❑ NONE
X
4L
C:\Users\bwilker\Documents\Well Development Log.doc

Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
ATTACHMENT B
SynTerra
USGS FLASH RESULTS AND CALCULATIONS

we--. Marshall AB-1BRLLLIUnperl
Elevation of measuring point [FT]
0
Number of Flow zones[-]
19
Well diameter [IN]
9
Dmwdown [FT]
0.30
Depth to ambient water level [FT]
2.6
Depth at bottom of casing [FT]
76.3
Depth at bottom of well [FT]
240.9
Radius of influence (Rp) [FT]
1000.0
Total tmnsmissivity (Tew) [FT'/day]
211.36
Flow above layer bottom depths
Bottom Depth IFT7 Ambient [GPM] Stressed IG
Estlmele Trelis1111HIl ry 1
I
Estimate ROI
C' Solve whhout ReSlularizatlon
C' SGlvewltll RequMRzetion
ABS(Ah) maximum 5.00E+00
Regularization weight 1.00E-04
Tfa- inimu-H 1.00E-09
Ah rFTI Farfield Mad
89
0.3742
0.5198
0.00
0.00
-2.60
99
0.4227
0.7275
0.00
0.00
-2.60
109
0.5198
0.8027
0.00
0.00
-2.66
119
0.5198
0.8027
0.00
0.00
-2.60
129
0.5612
0.8027
0.00
0.00
-2.66
139
0.5612
0.7275
0.00
0.00
-2.60
149
0.5198
0.7275
0.00
0.00
-2.60
159
0.5198
0.6087
0.00
0.00
-2.66
164
0.4227
0.8922
0.64
0.31
-2.29
169
0.4834
0.2628
0.00
0.00
-2.60
179
0.4834
0.2414
0.13
1.56
-1.04
184
0.3022
0.1748
0.00
0.00
-2.66
189
0.1551
0.1058
0.00
0.00
-2.60
199
0.1865
0.1204
0.00
0.00
-2.66
209
0.2414
0.1204
0.00
0.00
-2.60
220
0.1357
0.0612
0.09
1.82
-0.78
229
0.1103
0.0320
0.00
0.00
-2.60
239
0.0590
0.0000
0.00
0.00
-2.60
MSE [GPMrJ 8.106789E-03
Ambient W L [FT]
Pumped WL[FT]
FRACTURES:
19
1e
17
1a
1s
14
13
12
11
10
Depth
Sum Tye, 1.000 Sum dh42 6.7077792390299
Estimated Ttotal[FT'/day] 211.297 Regulerized Misfit 0.01
Ambient Stressed Ambient Stressed
Flow above Flow above Error Error Zone T Fraction of..I
79.34
0.390
0.652
0.061
-0.091
28.335
0.134
89.23
0.498
0.725
-0.123
-0.205
0.000
0.006
99.31
0.498
0.725
-0.075
0.003
0.000
0.000
109.31
0.498
0.725
0.022
0.078
0.000
0.006
119.22
0.498
0.725
0.022
0.078
0.000
0.000
129.21
0.498
0.725
0.064
0.078
0.000
0.006
139.40
0.498
0.725
0.064
0.003
0.000
0.000
149.32
0.498
0.725
0.022
0.003
0.000
0.006
159.42
0.498
0.725
0.022
-0.116
0.000
0.000
164.33
0.498
0.725
-0.075
0.167
135.736
0.642
169.25
0.326
0.385
0.157
-0.122
0.000
0.000
179.41
0.326
0.385
0.157
-0.143
28.010
0.133
184.28
0.145
0.169
0.157
0.006
0.000
0.000
189.43
0.145
0.169
0.010
-0.063
0.000
0.006
199.37
0.145
0.169
0.042
-0.048
0.000
0.000
209.48
0.145
0.169
0.097
-0.048
0.000
0.000
219.52
0.145
0.169
-0.009
-0.108
19.217
0.091
229.48
0.000
0.000
0.110
0.032
0.000
0.006
239.25
0.000
0.000
0.059
0.000
0.000
0.000
Ambient Flow Profile
Pumped
Flow Profile
Upward Flow, in GPM
Upward
Flow, in GPM
•
'
t
1
jI
T
Lfi
o
�
c
II
•
z
iI
1
AB lBRLLL (Upper) UPDATED

AB-1BRLLL (Upper) FLASH Results and Individual Hydraulic Aperture Values
Flow
layer in
Flash
Depth
(feet bgs)
Depth
(feet BTOR)
Depth of Center of
Interval
(feet BTOR)
Interval
Lenth
(feet)
# of
Fractures in
Flow Layer
Fracture Spacing
in Interval
(feet)
Fraction of
Total
Transmissivity
Transmissivity
(ft2/day)
CALIBRATED
Transmissivity
(ft2/day)
Transmissivity
(m /s)
Hydraulic
Conductivity
(feet/day)
Viscosity of Water,
p2
(N s/m2)
Density of
Water, pwa
(kg/ma)
Acceleration
due to
Gravity, g
Hydraulic
Aperture, eh
(m)
Hydraulic
Aperture, es
(mm)
1
79.34
9.34
7.82
3.04
1
3.04
0.13
28.33
108.03
1.16E-04
3.56E+01
1.20E-03
999.33
9.8
5.55E-04
0.55
2
3
89.23
99.31
19.23
29.31
14.28
24.27
9.89
10.08
1
1
9.89
0.00
0.00
0.00
0.00
0.00
0.00
4
109.31
39.31
34.31
10.00
2
5.00
0.00
0.00
0.00
5
119.22
49.22
44.27
9.91
1
0.00
0.00
0.00
6
129.21
59.21
54.22
9.99
1
0.00
0.00
0.00
7
139.40
69.40
64.30
10.19
6
1.70
0.00
0.00
0.00
8
149.32
79.32
74.36
9.92
4
2.48
0.00
0.00
0.00
9
159.42
89.42
84.37
10.10
1
0.00
0.00
0.00
10
1 164.33
94.33
1 91.87
4.91
1 1
4.91
0.64
1 135.74
517.52
5.56E-04
1.05E+02
1.20E-03
999.33
9.8
9.36E-04
0.94
11
169.25
99.25
96.79
4.92
2
2.46
0.00
0.00
0.00
12
179.41
109.41
104.33
10.16
1
10.16
0.13
28.01
106.79
1.15E-04
1.05E+01 1.20E-03 999.33 9.8
5.53E-04
0.55
13
184.28
114.28
111.85
4.87
1
4.87
0.00
0.00
0.00
14
189.43
119.43
116.85
5.14
8
0.64
0.00
0.00
0.00
15
199.37
129.37
124.40
9.95
3
3.32
0.00
0.00
0.00
16
17
209.48
219.52
139.48
149.52
134.43
144.50
10.11
10.04
5
3
2.02
3.35
0.00
0.09
0.00
19.22
0.00
73.27
7.88E-05
Z7.30E+00J1.20E-03J999.33
9.8
3.38E-04
0.34
18
19
229.48
239.25
159.48
169.25
154.50
164.37
9.97
9.77
9
6
1.11
1.63
0.00
0.00
0.00
0.00
0.00
0.00
Flow Layer
in FLASH
AMBIENT FLOW
PUMPED FLOW
AWDepth
(FT)
69
Q (GPM)
0.00E+00
Depth (FT)
69
Q (GPM)
1.18E-01
1
79
4.51E-01
79
5.61E-01
2
89
3.74E-01
89
5.20E-01
3
99
4.23E-01
99
7.27E-01
4
109
5.20E-01
109
8.03E-01
5
119
5.20E-01
119
8.03E-01
6
129
5.61E-01
129
8.03E-01
1
139
5.61E-01
139
7.27E-01
8
149
5.20E-01
149
7.27E-01
9
159
5.20E-01
159
6.09E-01
10
164
4.23E-01
164
8.92E-01
11
169
4.83E-01
169
2.63E-01
12
179
4.83E-01
179
2.41E-01
13
184
3.02E-01
184
1.75E-01
14
189
1.55E-01
189
1.06E-01
35
199
1.86E-01
199
1.20E-01
36
209
2.41E-01
209
1.20E-01
17
220
1.36E-01
219
6.12E-02
38
229
1.10E-01
229
3.20E-02
19
239
5.90E-02
239
0.00E+00
Total Transmissivity Calculated from Thiem Equation
Q (gpm) ft2 da Drawdown, s (ft) R. (ft) P. (in) R,., (ft) T Tu ft2/da
1 192.5 0.3 1000 4.5 0.375 805.62
Notes:
1. Following a logarithmic sensitivity analysis of the FLASH model to radius of influence, a conservative value of 1000 feet was
used.
2. Objective function, F, for model incoporates mean squared error (MSE) between interpreted and predicted flow profiles
and the sum of squared differences (4h) between the borehole's water level and far -field heads. Model objective is to
minimize F: therefore. a value closer to zero indicates a better fit.
3. Model was run until no more iterations produced changes in output.
4. FLASH Software: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.l, 2011, FLASH: A Computer Program for
Flow -Loa Analysis of Sinale Holes v1.0: U.S. Geological Survey Software Release, 07 March 2011.
5. FLASH Report: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.l., 2011, A computer program for Sow -log
analysis of single holes (FLASH): Ground Water, https://dx.dol.org/10.1111/j.1745-6584.2011.00798.x
6. Highlighted cells indicate Flow levels that do not have any observed open fractures and did not contribute to total
trai issivity. These depth intervals were not used for fracture spacing versus depth below top of rock Figure because it is
assumed that there are no fractures in these intervals.
FLASH Total T and Fit Parameters
Radius of
Transmissivity,
Influence, Re
TTorel
MSE
Oh
F
(ft)
(ft'/day)
1000
211.30
B.11E-03
6.702
8.78E-03

FLASH - Flow Log Analysis of Sing
REQUIRED weuname. Marshall AB-tOBRL
NPUT:
Elevation of measuring point [FT]
0
Number of Flow zones[-]
15
Well diameter [IN]
5.8
Drawdown [FT]
1955.
Depth to ambient water level [FT]
5.5
Depth at bottom of casing [FT]
159.1
Depth at bottom of well [FT]
299.2
Radius of influence (R.) [FT]
1000.0
Total tmnsmissivity (Tow) [FT2/day]l
10.96
Flow above layer bottom depths
jSonom Depth IFTI Ambiem [GPM] Stressed IG
c'tG[:YLS7
Holes Ambient Flow Profile
upward Flow, in GPM
1 Solver n Estimate TlensmisslVlry
n Estimate ROI
O Solve without Regularization
C' Solvewltll Requla Rzation
ABS(Ah) maximum 5.00E+00
Regularization weight 1.00E-04
Tfa— minimum[ - ] 1.00E-09
IDl dh rFTI Farfield Mad rFTI
2. 1 • I I xw
MSE 1GPM1
2.226981E-03
Sum Tow. 1.000
Sum e1h^2
0.0775936272240
Ambient W L [FT]
Estimated
Ttotal [FT2/day] 10.959
Re9ulsrizod Misfit
0.00
Pumped WL[FT]
-25.05
Ambient
Stressed Ambient
Stressed
Depth
Flow above
Flow above Error
Error
Zone T
Fraotlon of toml
FRACTURES:
[FT]
[GPM]
[GPM] [GPM]
[GPM]
[FT -/day]
trallsmisslvlly
1a
14
13
12
11
10
1 11 •�
1 11
1 1
1 111
1 111
111•�
111
11
1111
1111
111•�
111�
11
1111
1111
111•�
111.
11
1111
1111
®'•"
1111
11 •
11
I111
1 •1
11
•11
1111
11
11
111
1111
1111
Pumped Flow Profile
Upward Flow, in GPM
A&1013RL UPDATED

AB-10BRL FLASH Results and Individual Hydraulic Aperture Values
Flow
Layer In
Flash
Depth
(lest bgs)
Depth
(lest BTOR)
Depth of Center
of Interval
(feet BTOR)
Interval Lenth
(feet)
7t o! Fractures
In Flow Layer
Fracture
Spacing In
Interval
(feet)
Fraction o! Total
Transmissivity
Transmissivity
(ft'/day)
CALIBRATED
Transmissivity
( ftz/day)
Transmissivity
(rnz/s)
Hydraulic
Conductivity
(feet/day)
Viscosity of
Water, 2)
(N s/m
Density of
Water, pw3
(kg/m3)
Acceleration
due to Gravity,
g
(m/s')
Hydraulic
Aperture,
en
(m)
Hydraulic Aperture,
en
(mm)
1
160.17
98.17
97.64
1.07
1
0.00
0.000
2
169.75
107.75
102.96
9.58
1
0.00
0.000
3
179.95
117.95
112.85
10.19
3
3.40
0.00
0.000
0.000
4
189.27
127.27
122.61
9.32
6
1.55
0.00
0.000
0.000
5
199.94
137.94
132.60
10.67
8
1.33
0.00
0.000
0.000
6
209.63
147.63
1 142.79
9.69
4
2.42
0.00
0.000
0.000
7
8
219.56
229.13
157.56
167.13
152.60
162.34
9.93
9.56
1
4
9.93
2.39
0.00
0.00
0.000
0.000
0.000
0.000
9
239.46
177.46
172.29
10.33
1
10.33
0.13
1.474
2.126
2.29E-06
2.06E-01
1.20E-03
999.33
9.8
1.50E-04
0.15
10
249.54
187.54
182.50
10.09
3
3.36
0.71
7.820
11.275
1.21E-05
1.12E+00
1.20E-03
999.33
9.8
1.81E-04
0.18
11
259.37
197.37
192.46
9.83
5
1.97
0.12
1.282
1.849
1.99E-06
1.88E-01
1.20E-03
999.33
9.8
8.36E-05
0.08
12
269.66
207.66
202.52
10.29
4
2.57
0.01
0.160
0.231
2.49E-07
2.25E-02
1.20E-03
999.33
9.8
4.51E-05
0.05
13
14
280.08
290.01
218.08
228.01
212.87
223.05
10.42
9.93
1
1
10.42
9.93
0.00
0.00
0.000
0.000
0.000
0.000
15
296.86
234.86
231.44
6.85
1
6.85
0.02
0.222
0.320
3.44E-07
4.67E-02
1.20E-03
999.33
9.8
1 7.97E-05
0.08
Pen
Fractures
Flow Layer in
Identified by
TEL
FLASH
172
172
3
175
180
181
4
185
186
189
190
190
192
194
194
5
195
195
196
199
201
203
6
203
207
216
7
223
226
8
227
230
232
9
247
248
10
250
253
257
11
259
260
260
262
263
12
268
268
274
13
298
14
Total Transmissivity Calculated from Thiem Equation
m ft3 da ws ft Drawdon, R. (ft) % (in) Rw (ft) 7 ft'/da
Notes:
1. Following a logarithmic sensitivity analysis of the FLASH model to radius of influence, a conservative value of 1000 feet was
s
p2. ed. Objective function, F, for model Incoporates mean squared error (MSE) between interpreted and predicted flow profiles and the
sum of squared differences (Ah) between the borehole's water level and far -field heads. Model objective Is to minimize F;
therefore. a value closer to zero Indicates a better fit.
3. Model was run until no more iterations produced changes in output.
4. FLASH Software: Day -Lewis, F.D., Johnson, C. D., pallet, F.L., and Halford, K.J, 2011, FLASH: A Computer Program for Flow -
Loa Analvsis of Sinale Holes vl.0: U.S. Geoloaical Survev Software Release. 07 March 2011.
5. FLASH Report: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J., 2011, A computer program for flow -log analysis
of single holes (FLASH): Ground Water, https://dx.doi.org/10.1111/j.1745-6584.2011.00798.x
6. Highlighted cells indicate flow levels that do not have any observed open fractures and did not contribute to total transmissivity.
These depth Intervals were not used for fracture spacing versus depth below top of rock figure because it is assumed that there are
no fractures in these Intervals.
FLASH Total T and Fit Parameters
Radius of
Influence, R.
(ft)
TransmisslVlty,
TTOTAL
(ft'/day)
MSE
Ah
F

FLASH - Flow Log Analysis of Single Holes LAOAmbient
o
Flow Profile
Upward Flow, in GPM
ir
c
Pumped Flow Profile
Upward Flow, in GPM
I •
1
REQUIRED Wril-, Marshall AL-iBRL
INPUT:0.00
Elevation of measuring point [FT] 0 un Solver j n EsUrn ale Trati9misslVlry
Number of Flow zones[-] 18 0Estimate ROl
Well diameter [IN] 5.9
Dmwdown [FT] 0.10
Depth to ambient water level [FT] 32.7 O SOW without ReguMrl2atlon
Depth at bottom of casing [FT] 150.5
Depth at bottom of well [FT] 299.7 C' SGlvewltll RequMRzatlon
Radius of influence (Ro) [FT] 1000.0
Total tmnsmissivity (T..) [FT'/day] 1913,87
ABS(Ah) maximum 5.00E+00
Regularization weight 1.00E-04
Tranormmimvm [-) 1.00E-09
Flow above layer bottom depths
FRACTURES Bottom Depth [FT1 Ambient [GPM] Stressed [GPM] Tfactor [FT -ID] Ah [FT] Farrield Mad [FT]
[8 160 0.0057 0.7138 0.00 0.00 -32.70
17
19
t5
14
11
10
9
8
6
5
a
3
2
t
MSE [GPMrJ 5.766076E-04 Sum Tye, 1.000 Sum dh^2 0.0370082843068
Ambient W L [FT] -32.70 Estimated Ttotal [FT'/day] 1913.868 Rg.lerized Mlsflt 0.00
Pumped WL[FT] -32.80
Ambient Stressed Ambient Stressed
Depth Flow above Flow above Error Error Zone T Fraction of ..IFRACTURES: [FT] [GPM] [GPM] [GPM] [GPM] [FT'/day] tratrsmisslvlly
18
It
9
s
7
5
Dashed lines
indi-le inte nkeiena of maeaured
eels.
adid lines
indeatesimuletea las.
169
0.0086
0.7138
0.00
0.00
-32.70
175
0.0409
0.7768
0.00
0.00
-32.70
179
0.0220
0.7338
0.00
0.00
-32.70
189
0.0202
O.Sza2
0.00
0.00
-32.70
.017
-0.061
0.000
0.000
AL-18RL UPDATED

AL-1BRL FLASH Results and Individual Hydraulic Aperture Values
Flow
Layer Ln
Flash
Depth
feet b e
( g)
Depth
feet BTOR
( )
Depth of Center of
p
Interval
(feet BTOR)
Interval
Lenth
(feet)
# of
Fractures in
Flow Layer
Fracture S pacing in
Into
(feet)
Fraction of Total
Transmissivit y
Transmissivity
(fta/day)
CALIBRATED
Transmissivity
(ft�/day)
Transmissivity
(m:/s)
H draulic Viscosity of Water,
y
Conductivity p3
(feet/day) (N s/m�)
Density of Acceleration
Y
due to
Water, pw' Gravi
(kg/.3) (m/Sing
Hydraulic Hydraulic
Aperture, eh Aperture, eh
(m) (mm)
1
159.54
94.54
90.02
9.04
1
0.00
0.00
0.00
2
169.37
104.371
99.46
9.83
1
0.00
0.00
0.00
3
174.79
109.785
107.08
5.41
1
0.00
0.00
0.00
4
179.33
114.327
112.06
4.54
1
4.54
0.00
0.00
0.00
5
189.40
124.396
119.36
10.07
1
10.07
0.00
0.00
0.00
6
199.34
134.342
129.37
9.95
1
0.00
0.00
0.00
7
209.95
144.952
139.65
10.61
1
0.00
0.00
0.00
8
9
219.60
229.78
154.595
164.779
149.77
159.69
9.64
10.18
1
1
0.00
0.00
0.00
0.00
0.00
0.00
30
SS
239.38
249.83
174.38
184.826
169.58
179.60
9.60
10.45
1
1
9.60
10.45
0.00
0.08
0.00
143.84
0.00
230.12
2.47E-04
2.20E+01 1.20E-03
999.33 9.8
7.14E-04 0.71
12
254.39
189.389
187.11
4.56
3
1.52
0.07
135.37
216.56
2.33E-04
4.75E+01 1.20E-03
999.33 9.8
4.85E-04 0.49
13
259.07
194.066
191.73
4.68
3
1.56
0.78
1491.80
2386.55
2.57E-03
5.10E+02 1.20E-03
999.33 9.8
1.08E-03 1.08
14
268.88
203.884
198.98
9.82
6
1.64
0.05
102.97
164.73
1.77E-04
1.68E+01 1.20E-03
999.33 9.8
3.52E-04 0.35
15
16
17
1 274.47
279.22
289.13
209.466
214.217
224.132
1 206.68
211.84
219.17
5.58
4.75
9.92
2
1
1
2.79
0.00
0.00
0."
0.00
0.00
0.00
0.00
N.
0.00
18
294.46
229.457
226.79
5.32
1
5.32
0.02
39.88
63.80
6.86E-OS
1.20E+O1 1.20E-03
999.33 9.8
4.66E-04 0.47
Fractures Flow Layer in
Identified by FLASH
Screen
Interval
Flow Layer
m FLASH
AMBIENT FLOW
PUMPED FLOW
Depth (FT)
139
Q (GPM)
0.0061
Depth (FT)
140
Q (GPM)
0.879
149
0.0066
150
0.803
1
160
0.0057
160
0.714
2
169
0.0086
170
0.714
3
175
0.0409
175
0.777
4
179
0.0220
180
0.734
5
189
0.0202
190
0.824
6
199
0.0204
200
0.777
7
210
0.0223
210
0.734
8
220
0.0231
220
0.803
9
230
0.0264
230
0.803
10
239
0.0281
239
0.824
11
250
0.0316
250
0.824
12
254
0.0392
255
0.734
13
259
0.0167
260
0.659
14
269
0.0186
270
0.075
15
274
0.030
275
0.042
16
279
0.0308
280
0.035
17
289
0.0258
1 290
0.039
18
294
0.0271
1 294
0.046
Total Transmissivity Calculated from Thlem Equation
Q (gpm) ft3 da Drawdown, s (ft) R. (ft) R. (in) Rw (ft) T ft2/da
1.2 231 0.1 1000 1 2.9 0.242 3061.75
Not",
1. Following a logarithmic sensitivity analysis of the FLASH model to radius of influence, a conservative value of 1000 feet was used.
2. Objective function, F, for model incoporates mean squared error (MSE) between interpreted and predicted flow profiles and the
m of squared differences (Oh) between the borehole's water level and far -field heads. Model objective is to minimize F; therefore, a
value closer to zero indicates a better fit.
3. Model was run until no more iterations produced changes in output.
4. FLASH Software: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J, 2011, FLASH: A Computer Program for Flow -Log
Analysis of Sinale Holes v1.0: U.S. Geological Survey Software Release, 07 March 2011. httos://dx.doi.om/10.5066/F7319SZC.
5. FLASH Report: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J., 2011, A computer program for flow -log analysis of
single holes (FLASH): Ground Water, https://dx.doi.org/10.1111/J+.1745-6584.2011.00798.x
6. Highlighted cells indicate flow levels that do not have any observed open fractures and did not contribute to total transmissivity.
These depth intervals were not used for fracture spacing versus depth below top of rock figure because it is assumed that there are no
fractures in these intervals.
FLASH Total T and Fit Parameters
Radius of Transmissivity,
Influence, R. TTv
MSE
Ali
F
(ft) (ft2/day)
1000
1913.87
0.001
0.031
0.001

wellname. Marshall AL-2BRLLL (Lower)
Elevation of measuring point [FT]
0
Number of Flow zones[-]
13
Well diameter [IN]
5.5
Drawdown [FT]
24.20
Depth to ambient water level [FT]
116.9
Depth at bottom of casing [FT]
373.9
Depth at bottom of well [FT]
501.6
Radius of influence (Ra) [FT]
1000.0
Total tmnsmissivity (Tew) [FT'/day]
2.56
Flow above layer be =depths
Soaom Depth IFT7 Ambient [GPM] Stressed IG
Esllmele Trelis1111HIl ry 1
I
Estimate ROI
O Solve whhout ReSluladzatlon
C' SGlvewltll Requ MRzallon
ABS(Ah) maximum 5.00E+00
Regularization weight 1.00E-04
Tfa—minimum[-) 1.00E-09
Ah rFTI Farfield Mad
MSE[GPN19 5.794021E-04
Ambient W L [FT]-116.90
Pumped WL[FT]-141.10
FRACTURES:
13
12
11
10
Depth
Sum Tyr 1.000 Sum Ah42 0.0349043385565
Estimated Ttotal[FTa/day] 2.565 Regularized Misfit 0.00
Ambient Stressed Ambient Stressed
Flow above Flow above Error Error Zone T Fraction o1'..1
•11:
111
1 1
111
11
1111
1111
111
1 1
111
11�•
1111
1111
11
111
1 1
111:
I I
1111
1111
1 11
�
1 11
1 1 1
1 111
1 111
1 I
111
�
111:
11
1111
1111
1111
11
111:
111
1111
1111
Ambient Flow Profile
Pumped Flow Profile
Upward Flow, in GPM
Ov.
Upward Flow, in GPM
•
a
a
r
0
0
�
AL-2BRLLL (Lower) UPDATED

AL-2BRLLL (Lower) FLASH Results and Individual Hydraulic Aperture Values
Flow
Layer!
Flash
Depth
(feet bgs)
Depth
(feet BTOR)
Depth of Center of
p
Interval
feet BTOR
( )
Interval
Lenth
(feet)
feet
# of
Fractures in
Layer
Flow La
Fracture S pacing in
Interval
(feet)
feet
Fraction of Total
Transmissivity
Transmissivity
(ft�/day)
CALIBRATED
Transmissivity
ft� da
( / Y)
Transmissivity
(ma/s)
Hydraulic
y
Conductivity
(feet da
/ Y)
Vi5<oaity of
Water, W.
N 5
( /m�)
Density of
Y
Water, p„,'
(k9/m')
Acceleration
due to
Gravityg
(m/s)
Hydraulic
Aperture, eh
(m)
Hydraulic
Aperture, eh
(mm)
1
380.06
250.06
246.98
6.16
1
6.16
0.14
0.37
0.44
4.68E-07
7.07E-02
1.20E-03
999.33
9.8
8.83E-05
0.09
2
390.08
260.08
255.07
10.03
1
0.00
0.00
0.00
3
400.30
270.30
265.19
10.21
1
0.00
0.00
0.00
4
410.33
280.33
275.31
10.03
1
10.03
0.00
0.00
0.00
_77777777"
5
420.21
290.21
285.27
9.88
3
3.29
0.00
0.00
0.00
6
430.04
1 300.04
295.12
9.83
1 1
0.00
0.00
1 0.00
7
439.23
309.23
304.63
9.19
1 1
9.19
0.09
0.23
0.27
2.89E-07
2.92E-02
1.20E-03
999.33
9.8
7.52E-05
0.08
8
450.38
320.38
314.80
11.15
1
0.00
0.00
0.00
9
458.59
328.59
324.48
8.21
1
8.21
0.08
0.21
0.25
2.67E-07
3.02E-02 1.20E-03 999.33 9.8
7.33E-05
0.07
10
470.20
340.20
334.39
11.60
2
5.80
0.00
0.00
0.00
11
479.86
349.86
345.03
9.67
2
4.83
0.62
1.59
1.87
2.01E-06
1.94E-01 1.20E-03 999.33 9.8
1.14E-04
0.11
12
490.19
360.19
355.02
10.33
5
2.07
0.00
0.00
0.00
13
499.95
369.95
365.07
9.76
2
4.88
0.07
0.18
0.21
2.25E-07
2.15E-02 1.20E-03 999.33 9.8
5.49E-05
0.05
Open
Fractures
Flow Layer in
Identified by
FLASH
EL
403
4
416
417
5
419
451
9
465
466
10
474
6Tr.
11
411
Screen
482
12
484
487
Interval
489
1492 1 13 1
In FLASH
Flow Layerj400
MBIENT FLOW
PUMPED FLOW
Depth
Q (GPM)
6.90E-03
Depth (FT)
370
Q (GPM)
1.39E-01
1
5.53E-03
380
2.45E-01
2
7.78E-03
390
1.96E-01
3
7.35E-03
400
2.13E-01
4
8.14E-03
410
1.64E-01
5
9.00E-03
420
1.54E-01
6
9.66E-03
430
2.33E-01
7
439
1.07E-02
440
2.98E-01
8
450
5.70E-03
450
1.78E-01
9
459
7.40E-03
461
1.98E-01
10
470
9.35E-03
470
1.56E-01
31
480
8.73E-03
480
1.80E-01
12
1 490
1 8.14E-03
490
1.62E-02
13
1 500
1 1.47E-02
Soo
1.80E-02
Total Transmissivity Calculated from Thiem Equation
Q (gpm) Q (ft3/day) Drawdown, s (ft) R. (ft) R.(in) Rw (ft) T (ft3/day)
0.3 57.75 25.4 1000 2.75 0.229 3.03
Notes:
1. Following a logarithmic sensitivity analysis of the FLASH model to radius of influence, a conservative value of 1000 feet was used.
2. Objective function, F, for model incoporates mean squared error (MSE) between interpreted and predicted flow profiles and the sum of
squared differences (Oh) between the borehole's water level and far -field heads. Model objective is to minimize F; therefore, a value
closer to zero indicates a better fit.
3. Model was run until no more iterations produced changes in output.
4. FLASH Software: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J, 2011, FLASH: A Computer Program for Flow -Log
Analysis of Sinqle Holes v1.0: U.S. Geoloqical Survey Software Release, 07 March 2011, https://dx.doi.orq/10.5066/F7319SZC.
5. FLASH Report: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J., 2011, A computer program for Sow -log analysis of
single holes (FLASH): Ground Water, https://dx.doi.org/10.1111/j.1745-6584.2011.00798.x
6. Highlighted cells indicate Flow levels that do not have any observed open fractures and did not contribute to total transmissivity.
These depth intervals were not used for fracture spacing versus depth below top of rock figure because it is assumed that there are no
fractures in these intervals.
FLASH Total T and Fit Parameters
Radius of
Transmissivity,
Influence, R.
TT-L
MSE
Ah
F
(ft)
(ft'/day)
1000
2.58
5.79E-04
0.035
5.83E-04

FLASH - Flow Log Analysis of Single Holes LAO
4-1
1-14
REQUIRED Wriiname. Marshall AL-2BRLLL (Upped
INPUT:
Elevation of measuring point [FT] 0 tun Solver n Esllm ale Tral11,111 lVlry
Number of Flow zones [-] 27 Estimate ROl
Well diameter [IN] 9
Drawdown [FT] 0.20
Depth to ambient water level [FT] 118.2 C, SOW without Reg uMrl2atlon
Depth at bottom of casing [FT] 133.7
Depth at bottom of well [FT] 372.9 C' Solvewilh RequMRzatlon
Radius of influence (Rp) [FT] 1000.0
Total tmnsmissivity (T..) [FT'/day] 474,68
ABS(Ah) maximum 5.00E+00
Regularization weight 1.00E-04
Tfe-minimum[-) 1.00E-09
Flow above layer bottorn depths
FRACTURES Bottom Depth [FT1 Ambient [GPM] Stressed [GPM] Tfactor [FT -ID] Ah [FT] Fairfield Mad [FT]
27 160-0.0123 0.3787 0.03 0.07-118.13
28
25
24
23
22
21
20
19
18
17
18
15
is
13
12
11
10
6
5
a
a
2
t
SIMULATED PROFILES (DO NOT EDIT)
MSE [GPM' 8.755519E-04 Sum Tye, 1.000 Sum dhA2 0.2985a21504378
Ambient W L [FT]-116.20 Estimated Ttotal [FT'/day] 474.678 Regularized Misfit 0.00
Pumped WL[FT] -116.40
Ambient Stressed Ambient Stressed
Depth Flow above Flow above Error Error Zone T Fraction of..I
FRACTURES: [FT] [GPM] [GPM] [GPM] [GPM] [FT -/day] tratrsmisslvlly
2]
28
25
24
23
22
21
20
19
18
17
18
15
14
13
12
11
10
9
e
7
8
5
4
3
z
1
De aline
indi-W into retatiena of measured
eels.
aditl lines
indic-innuleted lea.
165
-0.0143
0.3576
0.03
0.10
-118.10
170
-0.0215
0.3355
0.00
0.00
-118.20
ISo
-o.oass
o.3n6
0.17
0.03
-118.17
190
-0.0298
o.z666
0.12
0.13
-118.07
195
-0.0379
0.1747
0.10
0.40
-117.80
zoo
-0.1715
0.0807
0.00
0.00
-118.20
z10
-o.1o7s
o.oaas
0.00
0.00
-118.20
zzo
-0.1836
o.u91
0.21
-0.07
-118.27
230
-0.1136
0.0149
0.00
0.00
-118.20
za0
-0.09a2
0.0257
0.00
0.00
-118.20
zso
-o.1ao7
o.o11s
0.04
-0.17
-118.37
260
-0.1063
0.0286
0.00
0.00
-118.20
270
-0.0650
0.0131
0.00
0.00
-118.20
280
-0.0398
0.0146
0.00
0.00
-118.20
z90
-0.0875
0.0186
0.00
0.00
-118.20
295
-0.2689
0.0138
0.00
0.00
-118.20
300
-0.0481
0.0332
0.17
-0.21
-118.41
309
-0.0379
0.0196
0.00
0.00
-118.20
320
-0.0359
0.0223
0.00
0.00
-118.20
331
-0.0305
0.0256
0.13
-0.15
-118.35
335
0.0117
-0.0098
0.00
0.00
-118.20
340
0.0140
0.0164
0.00
0.00
-118.20
345
0.0000
0.02z0
0.00
0.01
-118.19
350
0.0000
0.0000
0.00
0.00
-118.20
360
0.0086
0.0076
0.00
0.00
-118.20
370
o.om1
o.olos
0.01
0.09
-118.11
159.65
-0.016
0.376
0.004
0.002
14.232
0.030
164.50
-0.021
0.360
0.006
-0.003
13.132
0.026
1fi9.90
-0.026
0.344
0.005
-0.009
0.000
0.000
180.05
-0.026
0.344
-0.019
0.014
80.613
0.170
189.93
-0.035
0.269
0.005
-0.002
54.666
0.115
194.97
-0.064
0.194
0.026
-0.019
48.385
0.102
200.26
-0.143
0.075
-0.028
0.006
0.000
0.000
210.31
-0.143
0.075
0.036
-0.030
0.000
0.000
220.24
-0.143
0.075
-0.040
0.045
98.190
0.207
230.03
-0.116
0.021
0.002
-0.006
0.000
0.000
240.10
-0.116
0.021
0.022
0.005
0.000
0.000
250.43
-0.116
0.021
-0.025
-0.010
17.693
0.038
259.96
-0.103
0.019
-0.003
0.010
0.000
0.000
269.74
-0.103
0.019
0.038
-0.006
0.000
0.000
280.10
-0.103
0.019
0.063
-0.004
0.000
0.000
290.03
-0.103
0.019
0.015
0.000
0.000
0.000
295.19
-0.103
0.019
-0.ifi6
-0.005
0.000
0.000
300.14
-0.103
0.019
0.055
0.014
79.045
0.167
308.96
-0.034
0.022
-0.003
-0.002
0.000
0.000
320.38
-0.034
0.022
-0.001
0.000
0.000
0.000
330.67
-0.034
0.022
0.004
0.004
60.538
0.128
335.02
0.003
0.009
0.009
-0.019
0.000
0.000
340.09
0.003
0.009
0.011
0.007
0.000
0.000
344.94
0.003
0.009
-0.003
0.013
0.885
0.002
350.07
0.003
0.006
-0.003
-0.008
0.000
0.000
359.77
0.003
0.008
0.006
-0.001
0.000
0.000
370.03
0.003
0.006
0.005
0.002
6.899
0.015
Ambient Flow Profile
Pumped Flow Profile
Upwartl Flow, in GPM
Upwartl Flow, in GPM
1
spa
.zso
o
I
c
AL-2BRLLL (Upper) UPDATED

AL-2BRLLL (Upper) FLASH Results and Individual Hydraulic Aperture Values
Flow
Layer in
Flash
Depth
(feet bgs)
Depth
(feet BTOR)
Depth of Center of
Interval
(feet BTOR)
Interval
Leath
(feet)
# of
Fractures in
Flow Layer
Fracture Spacing in
Interval
(feet)
Fraction of Total
Transmissivity
Transmissivity
(ft2/day)
CALIBRATED
Transmissivity
(ftz/day)
Transmissivity
(m2/a)
Hydraulic
Conductivity
(feet/day)
Viscosity of Water,
pa
N s
( /m2)
as
Density of
Water, p,,.3
(kg/m2)
Acceleration due
to Gravity, g
(m/s2)
Hydraulic
Aperture, a,
(m)
Hydraulic
Aperture, a,
(mm)
1
159.85
29.85
16.77
26.15
1
26.15
0.03
14.23
54.35
5.84E-05
2.08E+00
1.20E-03
999.33
9.8
4.41E-04
0.44
2
164.50
34.50
32.17
4.65
1
4.65
0.03
13.13
50.15
5.39E-05
1.08E+01
1.20E-03
999.33
9.8
4.30E-04
0.43
3
4
169.90
180.05
39.90
50.05
37.20
44.98
5.40
10.15
1
1
10.15
0.00
0.17
0.00
80.81
0.00
308.60
3.32E-04
3.04E+01
1.20E-03
999.33
9.8
7.87E-04
0.79
5
189.93
59.93
54.99
9.88
8
1.23
0.12
54.67
208.75
2.24E-04
2.11E+01
1.20E-03
1.20E-03
999.33
9.8
9.8
3.46E-04
0.35
6
194.97
64.97
62.45
5.04
5
1.01
0.10
48.38
184.77
1.99E-04
3.66E+01
999.33
3.88E-04
0.39
7
200.26
70.26
67.61
5.29
5
1.06
0.00
0.00
0.00
B
210.31
80.31
75.28
10.05
3
3.35
0.00
0.00
0.00
9
220.24
90.24
85.28
9.93
3
3.31
0.21
98.19
374.96
4.03E-04
3.77E+01
1.20E-03
999.33
9.8
5.83E-04
0.58
10
230.03
100.03
95.14
9.78
1
0.00
0.00
0.00
11
240.10
110.10
105.06
10.07
1
0.00
0.00
0.00
12
250.43
120.43
115.26
10.33
1
10.33
0.04
17.89
68.33
7.35E-05
6.61E+00
1.20E-03 999,33 9.8
4.76E-04
OAS
13
259.96
129.96
125.19
9.53
1
0.00
0.00
0.00
14
269.74
139.74
134.85
9.78
1
9.78
0.00
0.00
0.00
15
280.10
150.10
144.92
10.36
1
10.36
0.00
0.00
0.00
16
290.03
160.03
155.06
9.92
4
2.48
0.00
0.00
0.00
17
295.19
1 165.19
162.61
5.17
1
5.17
0.00
0.00
0.00
18
300.14
170.14
167.67
4.95
1
4.95
0.17
79.05
301.85
3.25E-04
6.10E+01
1.20E-03
999.33
9.8
7.82E-04
0.78
19
308.96
178.96
174.55
8.82
1
0.00
0.00
0.00
20
320.38
190.38
184.67
11.42
1
0.00
0.00
0.00
21
330.67
200.67
195.53
10.29
1
10.29
0.13
60.54
231.18
2.49E-04
2.25E+01
1.20E-03 999.33 9.8
7.15E-04
0.72
22
335.02
205.02
202.84
4.35
1
4.35
0.00
0.00
0.00
23
340.09
210.09
207.56
5.07
1
0.00
0.00
0.00
24
344.94
214.94
212.51
4.85
1
4.85
0.00
0.88
3.38
3.63E-06
6.97E-01
1.20E-03 999.33 9.8
1.75E-04
0.17
25
350.07
220.07
217.50
5.13
1
0.00
0.00
0.00
26
359.77
229.77
224.92
9.70
1
0.00
0.00
0.00
27
370.03
240.03
234.90
10.27
1
10.27
0.01
6.90
26.34
2.83E-05
2.57E+00
1.20E-03
999.33
9.8
3.47E-04
0.35
Open
Fractures
Flow Layer in
Identified by
OIL
FLASH
143
1
183
5
185
185
187
188
188
188
190
191
191
6
192
193
194
195
196
7
198
199
200
201
202
8
2215
22200
9
220
243
12
26565
19
279
15
281
16
281
281
289
291
17
296
18
332
1 22
Flow Layer in
FLASH
AMBIENT FLOW
PUMPED FLOW
Depth (FT)
(GPM)
Depth (FT)
(GPM)
1
160
-1.23E-02
160
3.79E-01
2
165
-1.43E-02
165
3.58E-01
3
170
-2.15E-02
170
335E-01
4
180
-4.55E-02
180
3.58E-01
5
190
-2.98E-02
191
2.67E-01
6
195
-3.79E-02
195
1.75E-01
7
200
-1.72E-01
200
8.07E-02
8
210
-1.07E-01
210
4.45E-02
9
220
-1.84E-01
220
1.19E-01
10
230
-1.14E-01
230
1.49E-02
11
240
-9.42E-02
240
2.57E-02
12
250
-1.41E-01
250
1.15E-02
13
260
-1.06E-01
260
2.86E-02
14
270
-6.50E-02
270
131E-02
IS
280
-3.98E-02
280
1.46E-02
16
290
-8.75E-02
290
1.86E-02
17
295
-2.69E-01
295
1.38E-02
IB
300
-4.81E-02
300
3.32E-02
19
309
-3.79E-02
310
1.96E-02
20
320
1 -3.59E-02
320
2.23E-02
21
331
-3.05E-02
330
2.56E-02
22
335
1.17E-02
335
-9.77E-03
23
340
1.40E-02
340
1.64E-02
24
345
0.00E+00
345
2.20E-02
25
350
0.00E+00
351
0.00E+00
26
360
8.64E-03
360
7.55E-03
27
370
1 7.12E-03
1 370
1 1.05E-02
Total Transmissivity Calculated from Thiem Equation
(glint) fe da Drawdown, s (IllRo (IllR„ (in) Rw (ft) T Vey)
1.5 188.15 0.2 1000 4.5 0.375 1812.64
Notes:
1. Following a logarithmic sensitivity analysis of the FLASH model to radius of influence, a conservative value of 1000 feet was Used.
2. Objective function, F, for model incoporates mean squared error (MSE) between interpreted and predicted flow profiles and the sum of
squared differences (Ah) between the borehole's water level and far -field heads. Model objective Is to minimize F; therefore, a value closer
to zero indicates a better fit.
3. Model was run until no more Iterations produced changes In output.
4. FLASH Software: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J, 2011, FLASH: A Computer Program for Flow -Log Analysis
of Single Holes v1.0: U.S. Geological Survey Software Release, 07 March 2011, https://dx.dol.orq/10.5066/F73195ZC.
5. FLASH Report: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J., 2011, A computer program for Flow -log analysis of single
holes (FLASH): Ground Water, https://dx.doi.org/10.1111/j-.1745-6584.2011.00798..
6. Highlighted cells Indicate flow levels that do not have any observed open fractures and did not contribute to total transmissivlty. These
depth intervals were not used for fracture spacing versus depth below top of rock figure because it is assumed that there are no fractures in
these Intervals.
FLASH Total T and Fit Parameters
Radius of
Transmissivity,
Influence, R.
TTML
MSE
Ah
F
(rc)
(112/day)
1000
474.68
6.76E-04
0.299
9.05E-04

Wellname. Marshall MW-14BRL
Elevation of measuring point [FT]
0
Number of flow zones[-]
17
Well diameter [IN]
5.5
Drawdown [FT]
9.30
Depth to ambient water level [FT]
25.2
Depth at bottom of casing [FT]
136
Depth at bottom of well [FT]
301
Radius of influence (Ra) [FT]
1000.0
Total tmnsmissivity (Tew) [FT'/day]
18,19
Flow above layer bottom depths
Bottum Depth IFT7 Ambient [GPM] Stressed IG
[-0' Estimate Trana11111551VI1T I
n Estlmate ROI 1
CI S01 ra whhout Regularl2atlon
C' SGIvewltlt Requ Mrinflon
ABS(Ah) maximum 5.00E+00
Regularization weight 1.00E-04
Tfarmrmmimum[-) 1.00E-09
Ah rFTI Farfield Mad
MSE [GPMaJ 7.817393E-05
Ambient W L [FT] -25.20
Pumped WL[FT] -34.50
FRACTURES:
17
18
1s
14
13
12
11
10
Depth
Sum Tye, 1.000 Sum AhA2 0.0468383080308
Estimated Ttotal[FTa/day] 18.190 Retlularized Misfit 0.00
Ambient Stressed Ambient Stressed
Flow above Flow above Error Error Zone T Fraotlon of toml
140.11
0.005
0.664
-0.005
0.000
1.514
0.083
149.77
0.005
0.609
0.002
0.000
0.000
0.000
160.30
0.005
0.609
0.002
0.000
8.040
0.442
170.03
0.005
0.318
0.004
0.000
0.260
0.014
180.42
0.005
0.308
0.002
-0.020
0.000
0.000
190.03
0.005
0.308
0.003
-0.006
0.000
0.000
200.00
0.005
0.308
0.003
0.026
0.455
0.025
210.12
0.005
0.292
0.001
-0.017
0.000
0.000
219.84
0.005
0.292
0.003
0.010
0.000
0.000
230.07
0.005
0.292
0.002
-0.004
0.000
0.000
240.15
0.005
0.292
0.002
0.010
1.386
0.076
249.76
0.005
0.241
0.002
0.000
0.000
0.000
260.06
0.005
0.241
0.006
0.000
0.000
0.000
270.14
0.005
0.241
0.002
0.000
0.466
0.026
280.00
0.005
0.224
0.003
-0.018
0.000
0.000
290.13
0.005
0.224
0.001
0.017
5.734
0.315
297.95
0.000
0.012
0.016
0.001
0.333
0.018
Ambient Flow Profile
Pumped
Flow Profile
Upward Flow, in GPM
Upward Flow, in GPM
•
•
S
•
MW-14BRL UPDATED

MW-14BRL FLASH Results and Individual Hydraulic Aperture Values
Flow
Layer in
Flash
Depth
(feet bgs)
Depth
(feet BTOR)
Depth of Center of
p
Interval
feet BTOR
( )
Interval
Lenth
feet
(feet)
# of
Fractures in
Flow La
Layer
Fracture 5 pacing in
Interval
(feet)
feet
Fraction of Total
Transmissivity
Transmissivity
(ft�/day)
CALIBRATED
Transmissivity
(ft'/day)
Transmissivity
(mx/e)
Hydraulic
y
Conductivity
(feet/day)
Viscosity of Density Of
ty
Water, p' Water, pw3
N s
C /mz) (k9/m')
Acceleration
due to
Gravity, g
(m/s)
Hydraulic
Aperture, eh
(m)
Hydraulic
Aperture, eh
(mm)
1
140.11
85.11
83.06
4.11
2
2.06
9.66
0.08
1.51
2.23
2.39E-06
5,42E-01
1.20E-03 999.33
9.8
1.21E-04
0.12
2
149.77
94.77
89.94
9.66
1
0.00
0.44
0.00
8.04
0.00
11.82 1.27E-05 1.12E+00
2.65E-04
1.20E-03 999.3309.88.46E-05
0.27
3
160.30
105.30
100.04
10.53
1
10.53
4
170.03
115.03
110.17
9.73
1
9.73
0.01
0.26
0.38 4.12E-07 3.93E-02
1.20E-03 999.33
0.08
5
180.42
125.42
135.03
120.22
130.22
10.39
9.61
1
1
0.00
0.00
0.00
0.00
000190.03
0.007
200.00
145.00
140.01
9.97
1
9.97
0.03
0.46
0.67 7.20E-07 6,72E-02
1.20E-03 999.331.02E-04
0.10
8
9
210.12
219.84
155.12
164.84
150.06
159.98
10.12
9.73
1
1
0.00
0.00
0.00
0.00
0.00
0.00
10
230.07
175.07
169.95
10.22
1
0.00
0.00
0.00
11
240.15
185.15
180.11
10.09
1
10.09
0.08
1.39
2.04
2.19E-06
2,02E-01
1.20E-03 999.33 9.8 1.48E-04
0,15
12
249.76
194.76
189.96
9.61
1
0.00
0.00
0.00
13
260.06
205.06
199.91
10.30
1
10.30
0.00
0.00
0.00
14
270.14
215.14
210.10
10.08
1
10.08
0.03
0.47
0.68 7.36E-07 6.80E-02
1.20E-03 999.33 9.8 1.03E-04
0.10
15
280.00
225.00
220.07
9.87
4
0.00
0.00
0.00
16
290.13
235.13
230.07
10.13
1
10.13
0.32
5.73
8.43
9.07E-06
8.32E-01
1.20E-03 999.33 9.8 2.37E-04
0.24
17
297.95
242.95
239.04
7.82
6
1.30
0.02
0.33
0.49
5.26E-07
6.26E-012
1.20E-03 999.33 9.8 5.05E-05
0.05
Fractures Flow Layer in
Identified by FLASH
Screen
Interval
Flow Layer
In FLASH
AMBIENT FLOW
PUMPED FLOW
Depth FT
130
Q GPM
0.0084
De h FT
130.08
GPM
0.7275
1
140
0.0000
140.10
0.6636
2
150
0.0065
149.92
0.6087
3
160
0.0067
159.94
0.6087
4
170
0.0085
169.89
0.3177
5
180
0.0071
180.09
0.2880
6
190
0.0075
189.77
0.3022
7
200
0.0081
200.65
0. 3348
8
210
0.0060
209.81
0.2749
9
220
0.0084
220.29
0.3022
10
230
0.0074
230.21
0.2880
11
240
0.0066
240.13
0.3022
12
250
0.0072
250.17
0.2414
13
260
0.0105
260.13
0.2414
14
270
0.0068
270.35
0.2414
35
280
0.0080
280.07
0.2069
16
290
0.0056
290.01
1 0.2414
17
298
1 0.0160
297.87
1 0.0127
Total Transmissivity Calculated from Thiem Equation
m fta da Drawdown, s fit R. (ft) R„, (in) R., (ft) 7 ft'/da
1 192.5 9.6 1000 2.75 1 0.229 1 26.75
Notes:
1. Following a logarithmic sensitivity analysis of the FLASH model to radius of influence, a conservative value of 1000 feet was used.
2. Objective function, F, for model incoporates mean squared error (MSE) between interpreted and predicted flow profiles and the
sum of squared differences (4h) between the borehole's water level and far -field heads. Model objective is to minimize F; therefore, a
value closer to zero indicates a better fit.
3. Model was run until no more iterations produced changes in output.
4. FLASH Software: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J, 2011, FLASH: A Computer Program for Flow -Log
Analysis of Sinqle Holes v1.0: U.S. Geoloqical Survey Software Release, 07 March 2011, https://dx.doi.orq/10.5066/F7319SZC.
5. FLASH Report: Day -Lewis, F.D., Johnson, C. D., Paillet, F.L., and Halford, K.J., 2011, A computer program for Flow -log analysis of
single holes (FLASH): Ground Water, https://dx.doi.org/10.1111/j.1745-6584.2011.00798.x
6. Highlighted cells indicate Flow levels that do not have any observed open fractures and did not contribute to total transmissivity.
These depth intervals were not used for fracture spacing versus depth below top of rock figure because it is assumed that there are
no fractures in these intervals.
FLASH Total T and Fit Parameters
Radius of
Transmissivity,
Influence, ttu
7roru
MSE
All
F
(ft)
(ft�/daY)
1000
18.19
7.82E-OS
0.047
6.29E-05

Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
ATTACHMENT C
GEOPHYSICAL LOGGING REPORT
SynTerra

Solutions
821 Livingston Court, Suite E
Marietta, GA 30067
770.980.1002
Geophysical Logging Report
AB-1BRLLL, AB-2BR, AB-10BRL, AL-113RL, AL-2BRLLL, and MW-14BRL
Marshall Steam Station, Sherrills Ford, North Carolina
Performed for:
SynTerra
March 12, 2019
problem solved

Geophysical Logging Report, AB-1BRLLL, AB-213R, AB-10BRL, AL-1BRL, AL-2BRLLL, MW-14BRL
Marshall Steam Station, Sherrills Ford, North Carolina
TABLE OF CONTENTS
Section Page
SignaturePage..................................................................................................................................ii
ExecutiveSummary.........................................................................................................................iii
1.0 Introduction........................................................................................................................... 1
2.0 Equipment and Methodology................................................................................................ 1
2.1 Acoustic Televiewer...................................................................................................... 1
2.2 Optical Televiewer........................................................................................................ 2
2.3 3-Arm Caliper................................................................................................................ 2
2.4 Fluid Temperature........................................................................................................ 2
2.5 Fluid Conductivity......................................................................................................... 2
2.6 Single Point Resistance(SPR)........................................................................................ 3
2.7 Spontaneous Potential (SP).......................................................................................... 3
2.8 Heat Pulse Flowmeter(HPF)......................................................................................... 3
3.0 Field Procedures.................................................................................................................... 3
4.0 Data Processing and Results.................................................................................................. 4
Appendices
Appendix 1 Fracture Summary Table
Appendix 2 Schmidt Stereonets and Rose Diagrams
Appendix 3 Heat Pulse Flowmeter Logs and Fracture Characteristics
Appendix 4 Geophysical Logs
problem solved

Geophysical Logging Report, AB-1BRLLL, AB-213R, AB-10BRL, AL-1BRL, AL-26RLLL, MW-14BRL March 12, 2019
Marshall Steam Station, Sherrills Ford, North Carolina (synt00118) Page ii
SIGNATURE PAGE
This report, entitled "Geophysical Logging Report —AB-1BRLLL, AB-2BR, AB-10BRL, AL-1BRL, AL-2BRLLL,
MW-14BRL, Marshall Steam Station, Sherrills Ford, North Carolina" has been prepared for SynTerra located in
Greenville, South Carolina. It has been prepared under the supervision of Mr. Jorgen Bergstrom at the
request of and the exclusive use of SynTerra. This report has been prepared in accordance with accepted
quality control practices and has been reviewed by the undersigned.
GEL Solutions, LLC
A Member of the GEL Group, Inc.
Jorgen Bergstrom, P.Gp.
Senior Geophysicist
Nicholas Rebman
Geophysical Specialist
March 12, 2019
Date
problem solved

Geophysical Logging Report, AB-1BRLLL, AB-2BR, AB-10BRL, AL-1BRL, AL-2BRLLL, MW-14BRL March 12, 2019
Marshall Steam Station, Sherrills Ford, North Carolina (synt00118) Page iii
EXECUTIVE SUMMARY
GEL Solutions performed geophysical borehole logging services in six borings located at Marshall Steam
Station in Sherrills Ford, North Carolina. The field investigations were performed between October 24, 2018
and December 19, 2018 during several, separate mobilizations. This investigation was conducted to aid
SynTerra in evaluating potential pathways for groundwater migration through fractured bedrock at the site.
The geophysical logs consisted of acoustic televiewer, optical televiewer, caliper, fluid conductivity, fluid
temperature, single point resistance (SPR), spontaneous potential (SP), and heat pulse flowmeter (HPF).
Logging of the upper parts of AB-1BRLL and AL-2BRLLL was conducted before setting the second casing, and
before reaching the total depth. Logging of the lower parts of AB-1BRLL and AL-2BRLLL was conducted after
setting the second casing and reaching the total depth. HPF logging was conducted under ambient conditions
for all wells, and under pumping conditions for all wells except AB-1BRLLL and AB-2BR since these two borings
exhibited artesian conditions.
The logging data was analyzed to determine the location and orientation of fractures and other features.
In addition to these data sets, synthetic caliper logs were calculated from the acoustic televiewer travel time
data to aid in the interpretation. The logs were analyzed for fractures and other features. Dip and azimuth (dip
direction) were calculated for each detected fracture based on the televiewer dataset. HPF data was analyzed
to detect water producing fractures.
problem solved

Geophysical Logging Report, AB-1BRLLL, AB-2BR, A13-10611L, AL-1BRL, AL-2BRLLL, MW-14BRL March 12, 2019
Marshall Steam Station, Sherrills Ford, North Carolina (synt00118) Page 1
1.0 INTRODUCTION
GEL Solutions performed geophysical borehole logging services in six borings located at Marshall Steam
Station in Sherrills Ford, North Carolina. The geophysical logs consisted of acoustic and optical televiewer, 3-
arm caliper, fluid conductivity, fluid temperature, single point resistance (SPR), spontaneous potential (SP), and
heat pulse flowmeter (HPF). The field investigation was performed between October 24, 2018 and December
19, 2018. The logging data was analyzed to determine the location and orientation of fractures and other
features. In addition to these data sets, synthetic caliper logs were calculated from the acoustic televiewer
travel time data to aid in the interpretation.
2.0 EQUIPMENT AND METHODOLOGY
The information below is an overview of the geophysical methodologies used for this investigation. The
intent of this overview is to give the reader a better understanding of each method, and background information
as to what is actually measured, the resolution of the method, and the limitations imposed by site -specific
subsurface conditions.
2.1 Acoustic Televiewer
Acoustic televiewer (ATV) logging produces a high resolution, magnetically oriented digital image of the
borehole wall to map the location and orientation of intersecting fractures, foliations, and lithologic contacts.
The Acoustic televiewer tool emits a rotating, narrow, acoustic beam that is reflected off the borehole wall.
The travel time and amplitude of the reflected wave are recorded by the tool and used to create borehole
images. Both datasets are useful for identifying the location and orientation of fractures. The amplitude of the
reflected signal will decrease at the location of fractures and the travel time will increase. The travel time data
can also be used for developing a high resolution caliper log for a more comprehensive analysis of fractures.
Acoustic televiewers can only be used in fluid filled boreholes. However, the fluid does not have to be optically
clear for the method to work.
When operating the ATV, a "time window" is set based on the borehole diameter. The time window is
the time interval in which the ATV instrument searches for an echo from the borehole wall. For smaller
increases in borehole diameter around fractures and sections of weaker rock, the ATV typically records an
accurate borehole diameter (correlates well with three -arm caliper data). However, if borehole openings are
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Geophysical Logging Report —AB-1BRLLL, A13-2611, AB-10BRL, AL-1BRL, AL-2BRLLL, MW-14BRL March 12, 2019
Marshall Steam Station, Sherrills Ford, North Carolina (synt00118) Page 2
much larger than the borehole diameter, the echo from the borehole wall may fall outside the time window, or
be too weak to be detected. In these situations, borehole diameters recorded with ATV may be inaccurate.
Since ATV only records the reflection from the borehole wall, the data cannot be used to determine how far a
fracture extends from the borehole. The acoustic televiewer has a vertical resolution of 2 millimeters.
2.2 Optical Televiewer
Optical televiewer (OTV) logging is used to record and digitize a 360-degree color image of the borehole
wall. Planar features such as fractures, foliation, and lithologic contacts can be identified directly on the
images. The tool is magnetically oriented in order to determine the orientation of features. Televiewers have a
vertical resolution of 2mm, which is significantly better than many other geophysical tools. As a result, it is able
to see features other tools cannot resolve. Optical images can be collected above or below the water surface,
provided the water is sufficiently clear for viewing the borehole wall.
2.3 3-Arm Caliper
Caliper logging is used to generate a profile of the borehole diameter with depth. The tool measures the
borehole diameter using three spring -loaded arms. Narrow enlargements in the borehole diameter can, in
most cases, be attributed to fractures. Caliper logging can be conducted above and below the water surface.
2.4 Fluid Temperature
Fluid temperature logging is used to identify where water enters or exits the borehole. In the absence of
fluid flow, a gradual increase on water temperature of approximately 1°F per 100 feet of depth is expected.
Rapid changes in the fluid temperature indicate water -producing or water -receiving zones. Little or no
temperature gradient indicates intervals of vertical flow.
2.5 Fluid Conductivity
Fluid conductivity logging is used to measure the electrical conductivity of the fluid in the borehole.
Variations in fluid conductivity can be contributed to concentration variations of dissolved solids. These
differences can occur when sources of water have contrasting chemistry and have come from different
transmissive zones. Fluid temperature and conductivity are measured concurrently using the same logging
tool.
problem solved

Geophysical Logging Report —AB-1BRLLL, A13-2611, AB-10BRL, AL-1BRL, AL-2BRLLL, MW-14BRL March 12, 2019
Marshall Steam Station, Sherrills Ford, North Carolina (synt00118) Page 3
2.6 Single Point Resistance (SPR)
Single point resistance logging involves passing an alternate current between a surface electrode and a
probe electrode and measuring the voltage difference created by the current. SPR is then calculated using
Ohm's law. SPR is the sum of cable resistance, and the resistance based on the composition of the medium,
the cross sectional area and length of the path through the medium. Therefore, the single point resistance log
does not provide quantitative data. In general, SPR increases with increasing grain size and decreases with
increasing borehole diameter, fracture density, and the concentration of dissolved solids in the water. Single -
point resistance logs are useful in the determination of lithology, water quality, and location of fracture zones
2.7 Spontaneous Potential (SP
SP logging is conducted to measure naturally occurring voltage differences along a borehole. The method has
been found useful for delineating sandstone/shale layering and other boundaries between permeable and
impermeable beds. The measurements are made with reference to an electrode at ground level. Therefore, SP
logging does not provide quantitative data.
2.8 Heat Pulse Flowmeter (HPF)
HPF logging measures the direction and rate of vertical fluid flow in a borehole by heating up a small
volume of water and monitoring temperature variations as the heated water moves with the fluid flow in the
borehole. Under ambient conditions, differences in hydraulic head between two transmissive fractures
produce vertical flow in the borehole. However, if the hydraulic head is the same, no flow will occur under
ambient conditions. Therefore, HPF logging is also conducted under low -rate pumping conditions. HPF
readings are point readings at the location of fractures. The location and number of these readings can be
determined after analyzing the other geophysical logs for fractures. HPF can be used for measuring vertical
flows in the borehole between 0.005 gallons per minute (gpm) and approximately 1.5 gpm. In HPF data,
upward flow is shown as positive flow, and downward flow is shown as negative flow.
3.0 FIELD PROCEDURES
All GEL Solutions activities on -site were supervised by a senior geophysicist. For this investigation, GEL
Solutions used a Mount Sopris Matrix logging system. Logging of the upper parts of AB-1BRLL and AL-2BRLLL
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Geophysical Logging Report -AB-1BRLLL, A13-21311, A13-101311L, AL-11311L, AL-213RLLL, MW-14BRL March 12, 2019
Marshall Steam Station, Sherrills Ford, North Carolina (synt00118) Page 4
was conducted before setting the second casing. Logging of the lower parts of A13-1131ILL and AL-2BRLLL was
conducted after setting the second casing and advancing the boring to the total depth. Pumping tests during
HPF testing were conducted using a Grundfos Redi-Flow-2 water pump with variable speed control box and an
in -situ Mini -Troll pressure transducer with logging capabilities. The pump is placed in the casing above the
open hole section of the borehole. HPF logging under pumping conditions commenced after the borehole
water level had stabilized. HPF logging was conducted at every 10 feet throughout the logging intervals under
ambient and pumping conditions. More closely spaced readings were then conducted at sections with abrupt
changes in flow. HPF logging was conducted under ambient conditions for all wells, and under pumping
conditions for all wells except A13-113RLLL and A13-213R since these two borings exhibited artesian conditions. A
summary of the configuration of the boreholes, pumping rates, and water levels is provided below. All depth
measurements are referenced from the ground surface. All borings are surface cased and open hole below the
casing.
Logging Configuration Summary
Well ID:
AB-1BRLLL
(TOP)
AB-1BRLLL
(BOTTOM)
AB-2BR
AB-10BRL
Casing material:
PVC
PVC
PVC
PVC
Casing diameter (in):
10.0
6.0
6.0
6.0
Open hole (ft):
76.3-240.9
241.6-498.5
110.7-299.0
159.1-299.2
Open hole diameter (in):
9.0
5.5
5.5
5.5
Pumping rate (gpm):
1.0
Artesian
well
Artesian
well
1.2
Pump depth (ft):
28
N/A
N/A
35
Water level before pumping (ft):
2.6
N/A
N/A
5.5
Water level at equilibrium (ft):
2.9
N/A
N/A
25.0
Well ID:
AL-1BRL
AL-2BRLLL
(TOP)
AL-2BRLLL
(BOTTOM)
MW-14BRL
Casing material:
PVC
PVC
PVC
PVC
Casing diameter (in):
6.0
10.0
6.0
6.0
Open hole (ft):
150.5-299.7
133.7-372.9
373.9-501.6
136.0-301.0
Open hole diameter (in):
5.9
9.0
5.5
5.5
Pumping rate (gpm):
1.2
1.5
0.3
1.0
Pump depth (ft):
60
150
150
50
Water level before pumping (ft):
32.7
118.2
116.9
25.2
Water level at equilibrium (ft):
32.8
118.4
141.1
34.8
problem solved

Geophysical Logging Report —AB-1BRLLL, AB-2BR, AB-10BRL, AL-1BRL, AL-2BRLLL, MW-14BRL March 12, 2019
Marshall Steam Station, Sherrills Ford, North Carolina (synt00118) Page 5
4.0 DATA PROCESSING AND RESULTS
The logs were analyzed for fractures and other features using WellCAD software, manufactured by
Advanced Logic Technology. The travel time data from the acoustic televiewer log was used to develop a
maximum caliper log. Fractures were interpreted through a complete data analysis of all logs. Dip and azimuth
(dip direction) were calculated for each detected fracture. The fracture data was corrected from apparent to
true dip and azimuth using deviation logs included with the televiewer dataset, and from magnetic north to
true north by rotating the fracture azimuths 7.4° counterclockwise. Magnetic north is 7.4° west of true north at
the site (according to National Oceanic and Atmospheric Administration). The reported azimuth or dip
direction is measured clockwise from true north (Figure 1). A fracture summary table including fracture
attributes is provided in Appendix 1. Dominating water producing fractures based on flow logging or other
evidence are highlighted and shown in bold and italics text. Minor water producing fractures based on flow
logging are shown in bold.
Schmidt stereonets (lower hemisphere) with fracture characteristics and fracture rose diagrams are
presented on Appendix 2. HPF logs and fracture characteristics are shown on Appendix 3. All logs are
presented on Appendix 4. All depths are referenced from ground surface.
Fast
Relations beirpm Dip and A�bvwb angle
Figure 1: Explanation of azimuth and dip for fractures
problem solved

APPENDIX 1

Marshall Steam Station, Sherrills Ford, North Carolina
Fracture Data from Geophysical Logging
AB-1BRLLL
Depth Azimuth Dip
ft deg deg
80.3 255 25
81.3 98 11
81.7 142 24
82.3 59 12
85.7 135 33
86.3 147 40
87.0 137 40
88.4 150 37
88.6 161 30
89.4 47 9
89.9 149 41
93.6 45 2
94.8 287 8
95.5 262 8
96.3 309 28
98.0 323 26
99.5 324 18
100.2 350 14
100.3 359 13
100.4 354 14
100.5 90 18
100.7 84 22
101.1 40 21
102.5 344 6
103.5 147 62
104.1 330 19
104.6 175 62
105.0 347 3
105.7 196 11
106.3 91 69
106.7 271 17
107.0 128 37
107.6 268 17
108.8 21 1
109.1 177 64
109.8 274 10
110.0 278 13
110.5 102 33
111.4 73 31
111.7 107 30
112.0 85 45
112.5 49 11
112.8 119 64
114.2 345 16
116.5 342 3
117.3 352 13
118.4 329 5
119.3 355 10
120.2 326 11
120.6 351 4
121.3 336 11
121.6 347 11
122.2 321 13
122.7 142 6
131.7 117 56
132.2 117 55
133.1 342 4
133.4 153 19
133.9 128 36
134.4 113 40
136.0 106 70
137.2 86 74
137.5 309 12
137.8 300 20
138.0 281 22
139.0 60 67
140.2 127 36
AB-1BRLLL
Depth Azimuth Dip
ft deg deg
140.8 114 54
143.1 88 12
144.1 164 23
144.8 109 20
145.8 102 27
146.1 114 60
147.1 102 25
147.1 109 54
147.9 90 42
148.1 98 32
151.0 134 50
151.6 346 48
152.0 10 4
152.6 126 32
152.9 121 42
154.6 79 44
155.1 98 34
155.9 54 29
156.5 93 31
156.6 190 83
157.8 81 42
158.8 81 47
159.2 113 38
163.3 105 37
163.9 127 41
163.9 327 82
164.5 302 48
165.3 91 39
165.7 197 86
167.2 194 85
167.7 110 33
171.3 298 28
172.4 201 79
173.7 98 23
175.4 115 36
175.5 112 33
175.7 115 38
177.8 114 38
181.3 154 71
181.6 ill 63
186.2 134 19
186.2 121 47
186.4 117 60
187.2 149 70
187.3 58 54
187.6 129 72
188.4 104 60
189.2 111 61,
190.7 123 59
197.0 123 51
197.1 117 53
200.3 14 7
201.5 358 11
202.7 309 30
203.7 128 37
206.6 342 89
210.7 112 74
210.8 98 63
211.5 28 23
212.0 71 38
212.2 93 43
212.8 93 58
213.0 86 56
213.1 255 48
213.3 94 57
213.6 91 47
213.7 140 77
AB-1BRLLL
Depth
Azimuth
Dip
ft
deg
deg
217.8
91
41
218.1
106
29
219.5
99
47
219.9
96
47
220.0
95
50
220.2
102
50
220.4
114
46
220.7
117
44
221.8
93
4
222.4
127
45
223.1
112
32
223.5
87
28
223.9
106
31
224.5
112
41
224.9
107
45
225.2
93
44
225.4
97
49
225.8
108
43
226.4
112
41
226.7
97
51
227.0
110
45
227.5
115
54
227.8
342
80
228.5
108
51
229.8
351
41
229.9
91
48
230.7
327
49
231.6
137
38
233.0
ill
59
233.5
124
58
235.1
92
44
235.7
271
24
236.4
293
32
236.7
163
65
236.9
124
70
237.3
88
54
237.5
101
54
v
237.8
108
45
n
238.1
107
47
j
J
239.3
120
73
239.6
188
64
m
239.7
109
40
239.7
156
71
239.8
307
11
241.2
191
83
a
242.0
187
85
0
243.1
122
49
J
244.7
140
27
244.9
136
49
m
�
m
245.7
114
37
¢
246.0
130
46
246.2
171
44
247.5
121
47
247.5
329
24
247.5
192
81
247.8
83
54
248.0
196
82
248.1
81
47
248.3
84
48
248.9
118
57
249.6
94
60
249.9
81
52
250.0
75
51
250.5
81
53
251.1
79
52
251.4
87
59
252.2
31
57
AB-1BRLLL
Depth Azimuth Dip
ft deg deg
252.7 103 17
253.4 57 35
253.6 58 37
253.9 120 5
254.0 70 35
255.4 340 75
255.7 96 49
255.9 86 44
256.1 97 44
256.9 12 4
257.9 126 43
259.4 128 40
259.5 131 46
262.9 117 4
263.7 301 7
264.3 10 8
264.8 101 44
264.9 130 48
266.3 135 73
267.2 106 51
267.5 117 44
268.3 122 33
268.7 78 37
269.1 139 19
269.2 125 20
270.6 157 66
270.8 147 59
271.0 123 60
271.6 126 55
271.8 118 52
272.0 123 50
272.2 130 49
273.5 152 47
273.7 113 41
274.1 121 45
274.2 120 58
274.4 128 56
275.2 93 69
276.3 129 49
276.7 125 44
277.1 134 55
277.3 135 68
277.5 131 65
277.8 133 63
278.2 132 73
278.7 146 65
279.3 57 25
279.5 137 29
279.7 120 46
280.0 130 37
280.2 121 61
281.6 91 47
286.0 335 75
286.0 131 34
286.0 126 34
286.2 140 39
286.3 140 34
290.2 340 23
290.7 60 62
291.6 227 44
293.1 11 13
293.9 102 40
294.1 93 43
296.2 120 53
298.7 344 27
299.3 157 47
300.9 26 76
Major open fractures are highlighted and shown in bold and italics text. Minor open fractures are shown in bold. Closed fractures are shown in plain text.

Marshall Steam Station, Sherrills Ford, North Carolina
Fracture Data from Geophysical Logging
AB-1BRLLL
Depth Azimuth Dip
ft deg deg
302.2 313 70
307.5 52 19
308.9 343 47
312.1 133 47
313.9 354 14
320.6 356 17
323.7 159 43
323.8 156 43
324.3 144 43
324.7 157 33
324.8 153 28
326.2 85 59
326.3 207 4
328.1 140 32
339.4 81 37
340.8 122 35
345.5 131 39
345.8 140 42
348.3 114 51
348.6 137 43
349.4 113 45
352.3 339 15
352.6 119 15
353.0 92 14
354.3 298 9
356.2 92 54
356.3 96 51
356.7 107 52
357.1 136 21
357.6 104 25
359.8 105 52
360.3 105 55
361.1 117 5
361.5 110 41
362.5 12 72
362.9 327 49
363.6 131 79
367.6 44 6
368.1 259 14
369.3 145 45
371.3 186 27
376.4 141 42
379.6 202 43
381.2 139 56
384.9 146 35
385.1 136 39
385.6 181 25
386.4 132 46
386.8 130 45
387.4 91 4
387.5 134 37
387.7 140 43
392.4 128 38
393.1 103 42
397.6 106 5
397.7 171 34
400.3 114 42
400.5 116 55
401.1 256 69
401.3 100 61
401.5 99 65
401.7 109 69
403.3 103 41
404.2 130 38
404.5 112 48
404.7 127 56
405.6 135 40
AB-1BRLLL
Depth Azimuth Dip
ft deg deg
406.1 137 17
408.2 148 24
410.5 161 51
410.7 151 50
410.8 151 46
411.0 152 46
411.1 155 46
411.9 172 30
412.5 153 54
413.2 146 51
414.2 176 30
414.7 152 25
415.8 114 57
416.1 123 58
416.3 113 66
417.2 225 35
420.9 133 48
421.0 132 48
422.9 71 7
423.7 133 83
424.2 59 11
428.9 68 47
429.2 359 8
430.5 315 63
430.8 130 35
432.0 320 45
434.6 322 58
440.7 146 38
442.2 138 53
442.6 305 50
443.6 171 77
443.7 70 4
444.5 164 60
447.0 135 62
447.6 304 40
447.7 125 68
448.3 196 55
448.5 164 50
448.7 153 59
449.1 143 48
450.2 206 41
450.6 172 44
451.2 145 41
451.3 136 40
451.7 135 34
452.2 136 52
452.6 106 40
453.5 141 57
454.5 142 44
455.1 135 54
456.3 148 49
456.9 137 50
458.0 302 68
458.3 128 64
459.3 96 84
459.7 127 48
459.8 118 53
459.9 113 47
460.2 105 83
460.9 122 67
461.7 126 56
462.3 125 55
464.8 137 10
466.5 136 48
467.3 178 37
467.5 177 30
469.2 178 84
AB-1BRLLL
Depth
Azimuth
Dip
ft
deg
deg
469.2
230
25
471.9
114
76
473.5
206
11
475.4
302
55
476.2
127
55
478.6
129
30
481.1
207
41
482.8
302
36
485.5
143
54
486.5
123
37
487.8
117
62
489.8
131
53
490.0
122
57
490.4
138
51
491.5
141
41
491.7
326
20
491.8
144
48
493.3
127
51
AB-26R
Depth Azimuth Dip
ft deg deg
121.3 308 27
122.4 140 45
125.3 154 42
125.7 146 43
127.0 188 81
135.9 326 11
144.2 147 54
145.1 147 51
145.2 161 55
146.1 168 26
147.2 148 37
147.2 145 48
147.7 346 13
147.9 125 39
148.3 117 52
148.8 354 10
149.4 126 49
155.4 150 65
156.9 134 63
162.3 324 18
171.7 147 42
172.5 120 41
175.3 112 43
177.3 143 56
178.7 354 38
179.2 335 41
179.3 335 76
181.1 136 47
181.1 355 21
182.5 119 42
185.7 117 44
186.3 125 45
186.7 123 50
186.7 172 32
187.8 114 56
188.6 128 53
188.8 120 54
189.1 125 54
189.5 126 62
189.5 120 71
191.3 124 46
191.9 119 55
193.1 122 65
193.3 120 63
194.0 123 54
202.7 139 55
203.6 331 28
205.3 146 60
206.2 14 7
208.0 350 11
208.2 354 7
210.8 134 51
212.0 186 11
212.3 306 18
212.6 135 52
212.8 134 59
213.2 194 85
213.6 109 37
214.8 158 66
215.7 130 53
216.3 127 37
217.7 109 50
218.6 113 48
218.9 123 52
219.3 125 54
220.3 125 45
220.5 143 49
Major open fractures are highlighted and shown in bold and italics text. Minor open fractures are shown in bold. Closed fractures are shown in plain text.

Marshall Steam Station, Sherrills Ford, North Carolina
Fracture Data from Geophysical Logging
AB-2BR
Depth
Azimuth
Dip
ft
deg
deg
221.4
21
14
221.6
136
41
223.5
320
49
225.9
132
47
226.6
120
38
227.8
112
41
231.5
146
44
233.8
12
13
235.1
340
9
235.4
315
15
237.7
354
6
238.1
123
50
238.6
130
52
238.8
129
54
238.9
188
84
239.7
116
52
240.2
117
48
241.5
330
58
243.2
129
46
247.2
6
8
248.6
117
48
250.1
348
9
250.4
204
5
252.3
201
86
254.5
40
19
256.5
9
10
258.3
154
55
260.0
153
53
260.8
129
51
262.3
182
83
263.4
322
26
264.2
193
89
264.7
117
44
264.7
194
84
268.0
311
25
268.9
189
89
269.2
354
7
269.2
133
48
269.4
356
9
272.8
124
43
272.8
113
53
273.6
330
31
273.7
330
27
274.5
322
21
276.0
99
1
277.5
139
36
278.7
129
50
278.8
134
51
279.8
129
42
285.5
337
15
293.5
243
53
297.0
122
43
297.9
132
40
AB-IOBRL
Depth Azimuth Dip
ft deg deg
158.7 186 76
159.4 114 33
161.3 141 27
161.4 131 27
161.8 142 32
162.4 133 36
162.8 190 83
163.1 17 32
166.9 149 54
170.4 158 44
171.0 162 37
171.2 195 67
171.8 135 27
172.4 153 33
172.8 136 36
173.1 108 47
173.7 129 51
174.0 137 55
174.2 138 51
175.1 139 64
175.9 149 50
176.5 120 35
179.0 142 65
180.2 130 55
180.8 305 14
181.2 144 67
184.1 146 45
184.1 149 46
184.6 121 47
185.9 146 66
187.5 144 53
187.8 138 50
188.5 310 28
189.1 158 48
189.9 292 28
190.4 112 36
191.5 133 46
193.5 153 42
193.7 151 41
195.1 277 31
195.1 293 10
195.4 148 48
195.9 284 14
198.5 291 28
200.5 326 14
202.6 134 53
202.7 134 63
207.2 265 14
215.6 132 52
222.8 25 2
226.1 111 17
226.7 52 5
229.9 123 2
232.0 145 4
232.3 134 49
232.6 68 12
232.7 70 1
236.7 52 7
244.4 149 32
244.6 138 33
245.0 137 8
246.2 143 12
247.0 341 74
247.7 149 8
249.9 346 15
252.9 41 1
257.1 156 4
AB-10BRL
Depth
Azimuth
Dip
ft
deg
deg
259.1
287
6
259.6
155
21
259.7
136
48
261.6
246
5
262.6
320
28
267.7
271
19
268.2
130
58
273.8
17
3
273.9
144
2
275.5
346
5
277.0
358
6
281.7
132
11
283.1
130
50
298.4
285
9
AL-1BRL
Depth
Azimuth
Dip
ft
deg
deg
160.2
347
78
161.3
343
70
163.6
201
38
169.9
149
53
171.0
16
11
174.5
323
11
177.2
182
39
177.6
165
37
178.0
157
47
178.5
342
75
179.3
118
39
179.9
89
56
180.5
113
68
181.4
134
50
181.7
127
57
182.1
115
65
182.4
344
80
182.6
134
49
182.9
137
49
183.3
126
49
183.5
145
25
184.3
178
20
208.5
178
13
209.5
342
4
218.3
174
15
223.7
45
8
226.6
75
12
226.9
349
61
229.9
355
9
230.9
358
72
231.2
199
86
232.0
195
85
237.0
349
82
241.6
322
20
244.8
336
15
245.0
331
14
246.8
343
14
252.6
128
39
252.9
149
28
253.2
158
33
256.4
149
27
257.0
168
46
257.5
177
37
260.4
359
16
262.1
274
18
262.5
347
80
262.5
139
70
268.4
23
75
269.0
346
71
270.1
123
49
270.9
122
41
271.4
132
37
280.9
191
37
283.6
306
47
283.7
107
8
285.9
335
23
291.9
340
73
297.2
150
35
297.8
146
34
Major open fractures are highlighted and shown in bold and italics text. Minor open fractures are shown in bold. Closed fractures are shown in plain text.

Marshall Steam Station, Sherrills Ford, North Carolina
Fracture Data from Geophysical Logging
AL-2BRLLL
Depth Azimuth Dip
ft deg deg
142.6 122 86
147.4 101 45
147.6 0 71
149.3 124 47
154.0 163 16
163.6 350 3
164.8 123 58
165.5 143 51
171.0 186 73
171.3 129 9
173.2 122 8
173.7 138 26
175.3 173 76
183.3 161 20
185.2 132 19
185.4 141 14
187.1 19 2
187.6 38 2
187.9 360 3
188.3 359 3
189.8 263 4
190.5 332 4
190.6 134 20
191.5 291 5
193.5 124 13
194.4 245 7
195.3 134 1
195.6 127 19
197.7 335 4
199.2 115 4
200.2 93 7
200.6 319 4
201.8 119 10
203.7 119 45
208.2 15 8
209.7 130 38
210.3 246 5
213.7 169 13
213.9 150 19
214.9 173 19
219.8 322 44
219.8 125 35
221.3 118 18
230.9 119 40
242.6 148 10
243.2 268 5
244.6 141 44
263.0 130 38
263.8 149 38
265.4 275 57
276.0 135 40
276.5 113 48
278.8 108 49
279.6 149 40
279.9 153 38
280.1 124 39
280.2 120 25
280.4 114 26
280.6 105 22
281.0 143 24
281.4 115 47
281.7 133 21
281.9 130 33
282.2 103 51
289.4 194 23
291.1 301 5
295.7 97 3
AL-2BRLLL
Depth
ft
Azimuth
deg
Dip
deg
299.9
130
16
305.0
208
83
314.7
133
26
315.1
145
30
318.9
136
14
321.6
125
5
^
`w
327.8
10
5
CL
c
328.5
150
28
329.0
150
35
329.8
297
28
N
330.6
305
46
331.4
122
42
332.2
128
35
403.1
88
17
^
v
408.1
271
20
0
409.0
153
19
-J
412.1
182
83
s
415.7
119
26
CO
N
417.3
153
19
419.1
159
17
J
423.4
111
23
426.8
167
84
430.4
150
16
430.8
137
17
433.8
143
26
434.4
162
77
437.6
157
66
450.8
108
56
453.5
135
77
465.1
333
15
467.6
176
75
474.0
120
51
476.3
283
17
481.0
162
28
481.7
234
14
483.5
266
5
486.9
314
43
488.9
123
39
491.9
104
61
492.1
231
9
MW-14BRL
Depth
Azimuth
Dip
ft
deg
deg
137.6
47
3
138.5
138
22
141.7
133
56
152.0
132
42
152.4
138
22
157.5
125
29
167.6
297
47
173.9
173
38
174.2
153
36
181.3
151
30
187.5
141
89
197.2
195
83
204.3
146
33
213.9
148
38
214.6
151
39
225.6
162
42
226.5
168
40
227.2
131
39
239.3
149
50
242.0
144
37
243.7
129
36
252.2
197
78
253.2
161
47
253.9
171
74
256.3
156
59
256.8
170
47
257.0
175
60
257.1
177
71
258.7
153
53
259.2
156
52
260.1
156
37
260.4
0
9
260.5
350
37
261.4
8
30
261.6
302
28
261.8
183
39
269.9
145
41
277.6
275
7
278.9
129
39
279.4
274
21
286.1
115
39
288.8
127
39
290.4
89
26
292.2
302
6
294.0
119
34
294.7
95
29
297.4
85
29
300.1
121
44
Major open fractures are highlighted and shown in bold and italics text. Minor open fractures are shown in bold. Closed fractures are shown in plain text.

APPENDIX 2

Depth Fractures Poles - Dip - Lower Hemisphere Great Circles - Strike - Lower Hemisphere
1ft:600ft 0 90 Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
75
100
Well ID:
125
AB-1 BRLLL
150
175
200
Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
Depth: 73.43 [ft] to 508.86 [ft] Depth: 73.03 [ft] to 508.86 [ft]
225
0° o.
/i
10 0 -50-
250
0 _ �0—
30 / 30`
ZI° f k' Zj —
�o
275
m
-__ 10 , 80 270" 10 2 30-40-50-60-70-80 90" 270' 20 30-40 50 80 0¢
90°
/ 1
1
300
325
- -
180`
Counts Dip[deg] Azi[deg] Counts Dip[deg] Strike[deg]
350
Mean 420 35.13 120.84 Mean 420 35.13 30.84
314 33.77 121.55 0 314 33.77 31.55
0 92 37.70 116.98 0 92 37.70 26.98
375
0 14 41.67 127.25 0 14 41.67 37.25
400
Major open fracture
�— Minor open fracture
425
Closed fracture
450
475
500
Page 1

Depth Fractures Poles - Dip - Lower Hemisphere Great Circles -Strike - Lower Hemisphere
1ft:500ft 0 90 Schmidt Plot - LH - Type Schmidt Plot - LH - Type
75
100
125
150
Schmidt Plot - LH - Type
Schmidt Plot - LH - Type
Depth: 106.76 [ft] to 314.60 [ft]
0�
Depth: 107.09 [ft] to 315.42 [ft]
01
0
70
_-80
175
0
i
0
60
0
/ / 50 -�
/ 0
30
2I0
30 X`
200
10
270° 10-20-30-40-W60-70-8 90,
10
270. 10-20-30-40�50}60-70-8090,
Well ID:
AB2-BR
225
180,
Counts Dip[deg] Azi[deg]
180, --
Counts Dip[deg] Azi[deg]
250
Mean 120 36.72 131.53
Mean 120 36.72 131.53
O 102 36.97 130.94
O 102 36.97 130.94
(7 16 32.08 136.91
O 16 32.08 136.91
275
O 2 41.84 126.93
4) 2 41.84 126.93
300
325
Page 1

Depth Fractures Poles - Dip - Lower Hemisphere Great Circles - Strike - Lower Hemisphere
1ft:500ft 0 90 Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
125
Well ID:
150
AB-10BRLSchmidt
Schmidt Plot - LH - Type Plot (Strike) - LH - Type
Depth: 138.55 [ft] to 317.19 [ft] Depth: 138.06 [ft] to 316.70 [ft]
0° 0°
175
80 80
0 70
� 7I
� 1
i 50 50
0 0
200
30 30
20 20
i
10 10
270° 10 0-30-40-50-60-70-80 90° 270° 10-20-30-40-50-60-70-80 90°
225
180, 180'
Counts Dip[deg] Azi[deg] Counts Dip[deg] Strike[deg]
275
Mean 81 24.71 141.70 Mean 81 24.71 51.70
41 34.11 141.95 G 41 34.11 51.95
O 39 11.76 146.21 0 39 11.76 56.21
300
O 1 1.07 40.87 0 1 1.07 310.87
Major fracture
open
325
Minor open fracture
• Closed fracture
Page 1

Depth Fractures Poles - Dip - Lower Hemisphere Great Circles - Strike - Lower Hemisphere
1ft:500ft 0 90 Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
125
Well ID:
150
AL-1 BRL
Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
Depth: 129.40 [ft] to 326.25 [ft] Depth: 130.54 [ft] to 326.90 [ft]
0° 0.
175
60 _ 80
�70�— —'
-- 70
0� �.//
0
• 50 5I
0 0
200
30 1
_-30 -
/
20 / 0
10 10
I
'
270° 10 0-30-40-50-60-70-60 90° 270' I10-20f30 0 50 0-70 Oi� 90"
225
2 5 0
180, --
275
130,
Counts Dip[deg] Azi[deg] Counts Dip[deg] Strike[deg]
Mean 59 27.46 145.95 Mean 59 27.46 55.95
O 40 17.67 145.39 O 40 17.67 55.39
O 17 37.02 150.49 0 17 37.02 60.49
300
0 2 45.00 122.68 0 2 45.00 32.68
Major open fracture
325--
Minor open fracture
• Closed fracture
Page 1

Depth Fractures Poles - Dip - Lower Hemisphere Great Circles - Strike - Lower Hemisphere
1ft:600ft 0 90 Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
75
100
Well ID:
125
AL-2BRLLL
150
175
200
225
Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
Depth: 119.29 [ft] to 513.78 [ft] Depth: 119.49 [ft] to 514.17 [ft]
250
o° 0°
°
70�
O - 70-
o 0--X
1-
50 50 �
275
0 0
30 30 I
/ 1 0 0
300
i
10 110
270° 10 01-30-40-50-60-70-80 90° 270° _ 10-20-30 0-50-60-70-80-1 90°
325
350
,=
180° 180°
Counts Dip[deg] Azi[deg] Counts Dip[deg] Strike[deg]
375
Mean 107 19.38 136.56 Mean 107 19.38 46.56
O 47 12.17 128.28 O 47 12.17 38.28
400
57 26.99 139.82 57 26.99 49.82
O 3 11.94 194.03 • 3 11.94 104.03
425
Major open fracture
Minor open fracture
450
Closed fracture
475
500
Page 1

Depth Fractures Poles - Dip - Lower Hemisphere Great Circles - Strike - Lower Hemisphere
1ft:500ft 0 90 Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
125
Well ID:
MW-14BRL
150
Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
Depth: 128.22 [ft] to 315.22 [ft] Depth: 128.22 [ft] to 316.70 [ft]
0° 0°
175
0 80 _
° 70
0
50 / J- -
50
0
• 0
30 30
200
2 1 0 2
10 10
270° 10-2 30-40-50--60-70-80 90° 270° 10-20-30-40 50: 70 80 90°
225
�V -
250
- -
180" 180'.
Counts Dip[deg] Azi[deg] Counts Dip[deg] Strike[deg]
275
Mean 48 33.61 148.29 Mean 48 33.61 58.29
O 12 33.02 141.82 O 12 33.02 51.82
34 35.06 151.54 34 35.06 61.54
O 2 12.04 330.51 0 2 12.04 240.51
300
Major open fracture
325--
Minor open fracture
• Closed fracture
Page 1

Depth All Fractures Poles - Dip - Lower Hemisphere Great Circles - Strike - Lower Hemisphere
1ft:600ft 0 90 Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
75
100
Well ID:
125
All Wells
150
175
200
Schmidt Plot - LH - Type Schmidt Plot (Strike) - LH - Type
Depth: 70.87 [ft] to 513.78 [ft] Depth: 70.87 [ft] to 514.17 [ft]
225
0° 6..
--
so - -a0— -\
io
60 -do-- X
O
250
ego —5�6-
y
30 30�
/ x
20 O 2\
0
\ II
275
I
0 1
2780 90° 270° 0-20-30-40-50-60-70-80" 90°
I
300
325
--------- -----
180° 80"
Counts Dip[deg] Azi[deg] Counts Dip[deg] Strike[deg]
350
Mean 835 30.95 128.79 Mean 835 30.95 38.79
588 32.51 129.70 588 32.51 39.70
375
O 223 26.37 126.40 O 223 26.37 36.40
0 24 35.16 127.88 0 24 35.16 37.88
400
425
Major open fracture
Minor open fracture
450
Closed fracture
475
500
Page 1

Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:1000ft 0 90 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
100
150
Azimuth -Absolute (Count)
Depth: 63.45 [ft] to 521.65 [ft]
200
0o
Dip Count -Absolute (Count)
Depth: 63.45 [ft] to 522.97 [ft]
0°
250
0
444452
Well ID:
ad
AB-1 BRLLL
300
18(90
Counts: 420.00
350
Mean (3D): 35.13
180°
Min: 1.03
Components: Azimuth
Max: 89.46
Counts: 420.00
400
Mean (3D): 120.84
Min: 9.70
Max: 359.26
450
500
Page 1

Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:500ft 0 90 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
75
100
125
Azimuth -Absolute (Count)
150
Depth: 99.54 [ft] to 317.52 [ft]
0°
Dip Count -Absolute (Count)
175
Depth: 99.87 [ft] to 318.18 [ft]
0°
200
11222
Well ID:
AB-2BR
3:3140
225
Counts: 120.00
Mean (3D): 36.72
180'
Min: 1.40
250
Components: Azimuth
Max: 88.77
Counts: 120.00
Mean (3D): 131.53
Min: 5.83
275
00
I
Max: 355.89
300
325
Page 1

Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:500ft 0 90 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
125
150
Azimuth -Absolute (Count)
Depth: 124.80 [ft] to 324.61 [ft]
175
0o
14
Dip Count -Absolute (Count)
Depth: 125.13 [ft] to 324.77 [ft]
0o Well ID:
200
18 AB-10BRL
i c
1 �14
i
225
2 5 0
108
Counts: 81.00
Mean (3D): 24.71
180'
Min: 1.07
Components: Azimuth
Max: 82.63
275
Counts: 81.00
Mean (3D): 141.70
Min: 16.73
Max: 358.08
300
325
Page 1

Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:500ft 0 90 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
150
Azimuth -Absolute (Count)
175
Depth: 139.70 [ft] to 317.52 [ft]
0°
Dip Count -Absolute (Count)
Depth: 140.03 [ft] to 318.18 [ft]
200
0°
Well ID:
AL-1 BRL
8
A1k
225
250
10
0
Counts: 59.00
Mean (3D): 27.46
180°
Min: 4.14
Components: Azimuth
Max: 85.52
275
Counts: 59.00
Mean (3D): 145.95
Min: 15.64
Max: 358.71
300
325
Page 1

Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:1000ft 0 90 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
100
150
Azimuth -Absolute (Count)
200
Depth: 101.05 [ft] to 521.65 [ft]
0°
18
Dip Count -Absolute (Count)
Depth: 100.39 [ft] to 522.97 [ft]
250
i
0°
Well ID:
AL-2BRLLL
300
d1f18
AaV2224
350
Counts: 107.00
Mean (3D): 19.38
180,
Min: 1.13
400
Components: Azimuth
Max: 85.78
Counts: 107.00
Mean (3D): 136.56
Min: 0.21
450
Max: 359.50
500
Page 1

Depth Fractures Rose Diagram - Dip Direction Rose Diagram - Dip
1ft:500ft 0 90 Azimuth - Absolute (Count) Dip Count - Absolute (Count)
100
125
150
Azimuth -Absolute (Count)
Depth: 120.87 [ft] to 317.52 [ft]
0°
175
Dip Count -Absolute (Count)
Depth: 120.54 [ft] to 318.18 [ft]
200
0°
1
6
Well ID:
MW-14BRL
225
16
Counts: 48.00
250
Mean (3D): 33.61
180°
Min: 3.12
04
Components: Azimuth
Max: 89.30
Counts: 48.00
275
Mean (3D): 148.29
Min: 0.13
Max: 350.48
300
325
Page 1

APPENDIX 3

Depth Caliper - max from ATV Fractures HPF Ambient
1ft:250ft 8.5 in 11 0 90 0 gpm 1
Caliper HPF Pumping
8.5 in. 11 0 gpm 1
75.0
Bottom of
Casing
80.0
85.0
90.0
Well ID:
AB-1 BRLLL (Top)
95.0
100.0
105.0
110.0
115.0
120.0
125.0
130.0
135.0
140.0
145.0
Major open fracture
Minor open fracture
Closed fracture
150.0
155.0
160.0
165.0
170.0
175.0
180.0
185.0
190.0
195.0
200.0
205.0
210.0
215.0
220.0
225.0
230.0
235.0
240.0
Page 1

Depth Caliper - max from AN Fractures HPF - Ambient
1ft:200ft 5.5 in 8 0 90 0 gpm 1
235.0
240.0
Bottom of Casing
245.0
250.0
Well ID:
AB-1 BRLLL
(Bottom)
255.0
260.0
265.0
270.0
275.0
280.0
Major open fracture
Minor open fracture
Closed fracture
I
285.0
290.0
295.0
300.0
305.0
310.0
315.0
320.0
325.0
330.0
335.0
340.0
345.0
350.0
355.0
360.0
365.0
370.0
375.0
380.0
385.0
Page 1

Depth Caliper - max from AN Fractures HPF - Ambient
1ft:200ft 5.5 in 8 0 90 0 9pm 1
395.0
400.0
405.0
410.0
415.0
420.0
425.0
430.0
435.0
440.0
445.0
450.0
455.0
460.0
465.0
470.0
475.0
480.0
485.0
490.0
495.0
Page 2

Depth Caliper Fractures HPF - Ambient
ft • 1 ft:200
5.5 in 6.5 0 90 0 gpm 1
Caliper -max from AN
5 in 8
105.0
110.0
115.0
WELL ID:
AB-2 BR
Bottom of Casing
120.0
125.0
130.0
135.0
140.0
145.0
150.0
155.0
160.0
165.0
170.0
Major open fracture
Minor open fracture
Closed fracture
,
175.0
180.0
185.0
190.0
195.0
200.0
205.0
210.0
215.0
220.0
-40
225.0
230.0
235.0
240.0
245.0
Page 1

255.0
260.0
265.0
270.0
275.0
280.0
285.0
290.0
295.0
300.0
Page 2

Depth Caliper - max from ATV Fractures HPF - Ambient
1ft:200ft 5.5 in 6.5 0 90 0 gpm 1
Caliper HPF - Pumping
5.5 in 6 0 gpm 1
Bottom of Casing
160.040
170.0
Well ID:
AB-10BRL
180.0
190.0
200.0
Major open fracture
�— Minor open fracture
Closed fracture
210.0
220.0
230.0
240.0
250.0
260.0
270.0
280.0
290.0
Page 1

Depth Caliper - max from ATV Fractures HPF - Ambient
1ft:220ft 5 in 6.5 0 90 0 gpm 1
Caliper HPF - Pumping
5.6 in 6.2 0 gpm 1
150.0
Well ID:
AL-1 BRL
Bottom of Casing
160.0
170.0
180.0
190.0
200.0
Major open fracture
Minor open fracture
f Closed fracture
210.0
220.0
230.0
240.0
250.0
260.0
270.0
280.0
290.0
Page 1

Depth Caliper - max from AN Fractures HPF - Ambient
1ft:200ft 8 in 12 0 90 -0.3 gpm 0.4
Caliper HPF - Pumping
8.5 in 9.5 -0.3 gpm 0.4
130.0
Well ID:
AL-2 BRLLL
Upper
Bottom of Casing
140.0
150.0
160.0
170.0
Y-
180.0
190.0
200.0
210.0
220.0
230.0
240.0
250.0
Major open fracture
�-- Minor open fracture
Closed fracture
Page 1

260.0
270.0
280.0
290.0
300.0
310.0
320.0
ICICIiail
340.0
350.0
360.0
370.0
Page 2

Depth Caliper - max from ATV Fractures HPF - Ambient
1ft:200ft 5.3 in 7 0 90 0 gpm 0.3
Caliper HPF - Pumping
5.3 in 5.7 0 gpm 0.3
370.0
Well ID:
AL-2BRLLL
(Lower)
Bottom of Casing
380.0
390.0
400.0
410.0
420.0
Major open fracture
Minor open fracture
Closed fracture
I
430.0
4V
440.0
450.0
460.0
470.0
480.0
490.0
500.0
Page 1

Depth Caliper Fractures HPF - Ambient
1ft:250ft 5.2 in. 6 0 90 0 gpm 0.8
Caliper - max from AN HPF - Pumping
5 in 7 0 gpm 0.8
130.0
Bottom of Casing
135.0
140.0
145.0
150.0
155.0
160.0
Well ID:
MW-14 BRL
165.0
170.0
175.0
180.0
185.0
190.0
195.0
200.0
205.0
Major open fracture
Minor open fracture
closed fracture
210.0
215.0
220.0
225.0
230.0
235.0
240.0
245.0
250.0
255.0
260.0
265.0
270.0
275.0
280.0
285.0
290.0
-
295.0
300.0
Page 1

APPENDIX 4

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Fractured Bedrock Evaluation
December 2019
Duke Energy Carolinas, LLC — Marshall Steam Station
ATTACHMENT D
SynTerra
PETROGRAPHIC EVALUATION OF CORE SAMPLES

PETROLEUM SERVICES
Petrographic Evaluation
Of Core Samples
SynTerra Corporation
1026.18-Marshall Project
July 2019
Core Laboratories, Inc.
Houston Advanced Technology Center
6316 Windfern Road
Houston, Texas 77040
Houston ATC Job File No.: 1902024G
The analytical results, opinions or interpretations contained in this report are based upon information and material supplied by the client for whose
exclusive and confidential use this report has been made. The analytical results, opinions or interpretations expressed represent the best judgment of
Core Laboratories. Core Laboratories, however, makes no warranty or representation, expressed or implied, of any type, and expressly disclaims
same as to the productivity, proper operations or profitableness of an oil, gas, coal or other mineral, property, well or sand in connection with which
such report is used or relied upon for any reason whatsoever. This report shall not be reproduced, in whole or in part, without the written approval of
Core Laboratories.

PETROGRAPHIC SUMMARY
Seven core samples from 1026.18-Marshall project were selected for thin section
petrographic analysis (Table 1). The analytical program and petrographic summary
are presented in Table 1. Thin section photomicrographs and descriptions are
provided in Plates 1 — 7.
• Seven samples are all igneous rocks. These igneous rocks are classified as
granodiorite, tonalite, monzonite, and quartz monzonite (Table 1), based on
the relative abundances of minerals (quartz, alkali feldspar, and plagioclase).
• Plagioclase crystals are locally altered into sericite/illitic clays (Plates 1 B, 2B,
3B, 4B). The illitic clays are locally present in some moldic pores (Plates 1A,
3B, 4A, 5B, 6B, 7A) and fractures (Plate 4B).
• Macropores are rare, and consist of dissolution intracrystal, moldic and
fracture pores. Micropores are probably rare to minor in abundance and
associated with some illitic clays.
Thank you for choosing Core Laboratories to perform this study. Please feel free
to contact us if you have any questions or comments concerning this report.
Sincerely,
Yong Q. Wu PhD
Staff Geologist
Reservoir Geology
Core Laboratories - Houston
Phone: [phone]
E-mail: Yong.Wu(@corelab.com

ANALYTICAL PROCEDURES
THIN SECTION PETROGRAPHY
Thin sections were prepared by first impregnating the samples with epoxy to augment
cohesion and to prevent loss of material during grinding. Each thinly sliced sample was
mounted on a frosted glass slide and then grounded to an approximate thickness of 30
microns. The thin sections were stained with the following: Alizarin Red-S to
differentiate calcite (stains red) from clear dolomite (does not stain); potassium
ferricyanide to identify ferroan dolomite (stains dark blue) and ferroan calcite (stains
purple to dark blue depending on acid concentration and iron content of the sample).
They were also stained with sodium cobaltinitrite for potassium feldspar (stains yellow).
The thin sections were analyzed using standard petrographic techniques.
Igneous rock classification scheme is as follows (Q = quartz; A = alkali feldspar; P =
plagioclase; F = feldspathoid):
quaicz
alkah feldspar
Syen11P
alkalifeklspar S
syenife A
fa���ng
alkali r,.0 par
syenlfe
0
F
quadz diorlie
rplariz gabhrn
quarizarnorthome
gabbro
diorite
P anorthosite
fd,&Lwar ing gabbre
foid bearingdionle
foid-bearing wWh&we

TABLE 1
SynTerra Corp., 1026.18-Marshall Project
ANALYTICAL PROGRAM AND SAMPLE SUMMARY
Sample No.:
Sample ID:
TS
Lithology:
Classification (QAPF):
Plate No.
1
AB-1(100)
X
Igneous Rock
Granodiorite
1
2
AB-1(151)
X
Igneous Rock
Granodiorite / Tonalite
2
3
AB-1(204)
X
Igneous Rock
Tonalite
3
4
AL-2(150)
X
Igneous Rock
Quartz Monzonite
4
5
AL-2(203)
X
Igneous Rock
Monzonite
5
6
AL-2(260)
X
Igneous Rock
Monzonite
6
7
AL-2(300)
X
Igneous Rock
Monzonite
7

PLATE 1
Thin Section Petrography
Company: SynTerra Corp. Sample Description
Project: 1026.18-Marshall Lithology: Igneous Rock
Location: na
Sample No.: 1 Classification (QAPF): Granodiorite
Sample ID: AB-1(100) Crystal Size (mm): 1.48
Structures:
A massive, fractures
Zr,, . •
t� A
Principal Minerals:
abundant plagioclase; moderate potassium feldspar;
Plag `A Bi abundant quartz; moderate biotite
r; 1p
I P i+ F
Accessory Minerals:
a !`1
" Ser Py rare muscovite, zircon, pyrite, and apatite
4
:1 r Groundmass:
na
`nx Fr Alteration and Replacement:
rare to minor plagioclase crystals are altered into sericite
' 1 mm and/or illitic clays; rare illitic clays partly fill moldic pores
B Pore Types:
rare dissolution intracrystal, moldic and fracture pores
Fr
Plag
Sher
' � lw. r
• G y i
7FPhotomicrograph Caption
+n ; "; r •!E The principal minerals are plagioclase (Plag), quartz (Q), K-
f 4 feldspar KF; stainedyellow) and biotite Bi in this igneous
0.1 mm rock (granodiorite). These mineral crystals show an
interlocking fabric. Accessory minerals are zircon (Zr),
pyrite (Py), apatite (Ap) and muscovite. The plagioclase is
locally altered into sericite/illitic clays (Ser). Macropores are
rare, and consist of dissolution intracrystal (IP), moldic (MP)
and fracture (Fr) pores. Some moldic pores are partly filled
with illitic clays (IL). It appears that fractures have no
Relative Abundances: obvious fillings. Micropores are probably rare to minor in
Rare <1% abundance and associated with some illitic clays. The
Minor 1-5% green box in Image A indicates the location of Image B.
Moderate 5-10%
Common 10-20%
HCnore„�b Abundant >20%

PLATE 2
Thin Section Petrography
Company: SynTerra Corp.
Project: 1026.18-Marshall
Location: na
Sample No.: 2
Sample ID: AB-1(151)
me r "IK .�
1 mm
B
0^1 mm
Relative Abundances:
Rare
<1 %
Minor
1-5%
Moderate
5-10%
Common
10-20%
HESERVOIR Abundant
>20%
Sample Description
Lithology: Igneous Rock
Classification (QAPF): Granodiorite / Tonalite
Crystal Size (mm): 0.27
Structures:
massive
Principal Minerals:
abundant plagioclase; minor potassium feldspar; abundant
quartz; abundant biotite
Accessory Minerals:
rare muscovite, zircon, pyrite, apatite and garnet
Groundmass:
na
Alteration and Replacement:
moderate plagioclase crystals are altered into sericite
and/or illitic clays; rare biotite crystals are altered into
chlorite
Pore Types:
rare dissolution intracrystal and moldic pores
Photomicrograph Caption
Plagioclase (Plag) is the most abundant mineral, followed
by quartz (Q), biotite (Bi) and K-feldspar (KF; stained pale
yellow) in this igneous rock (granodiorite or tonalite). These
mineral crystals are relatively small and show an
interlocking fabric. Accessory minerals include garnet (Gn),
zircon (Zr), pyrite (Py), apatite and muscovite. Many
plagioclase crystals are heavily altered into sericite/illitic
clays (Ser), as shown in the lower half of Image A (below
dashed lines). Macropores are rare, and consist of
dissolution intracrystal (IP) and moldic pores.
Micropores are probably rare to minor in abundance and
associated with some illitic clays. The green box in Image A
indicates the location of Image B.

PLATE 3
Thin Section Petrography
Company: SynTerra Corp.
Project: 1026.18-Marshal I
Location: na
Sample No.: 3
Sample ID: AB-1(204)
I_1
Plag A,
- -4.' Bi
! y'% — -► i
IP. t _
Zr
�1 mm
!'7 P
B
�
Plag
Core Lah
RESERVOIR OPTIMIZATION
Plag
u
Relative Abundances:
Rare
<1 %
Minor
1-5%
Moderate
5-10%
Common
10-20%
Abundant
>20%
Sample Description
Lithology: Igneous Rock
Classification (QAPF): Tonalite
Crystal Size (mm): 0.63
Structures:
massive
Principal Minerals:
abundant plagioclase; rare potassium feldspar; abundant
quartz; moderate biotite
Accessory Minerals:
rare amphibole, zircon, pyrite, and apatite
Groundmass:
na
Alteration and Replacement:
rare to minor plagioclase crystals are altered into sericite
and/or illitic clays; rare biotite crystals are altered into
chlorite; rare illitic clays partly fill moldic pores
Pore Types:
rare dissolution intracrystal and moldic pores
Photomicrograph Caption
The principal minerals are plagioclase (Plag), quartz (Q),
and biotite (Bi) in this igneous rock (tonalite). These mineral
crystals show an interlocking fabric. Accessory minerals are
zircon (Zr), pyrite (Py), apatite (Ap) and amphibole. The
plagioclase is locally altered into sericite/illitic clays (Ser).
Macropores are rare, and consist of dissolution intracrystal
(IP) and moldic (MP) pores. Some moldic pores are partly
filled with illitic clays (IL). Micropores are probably rare to
minor in abundance and associated with some illitic clays.
The green box in Image A indicates the location of Image
B.

PLATE 4
Thin Section Petrography
Company: SynTerra Corp.
Project: 1026.18-Marshall
Location: na
Sample No.: 4
Sample ID: AL-2(150)
AA
ram` !`
Plaq
'IP
t j
B
_
Jr t� trY
y
.�.
Plag
."
t-
Fr
Ser
KF ^~
.. Ap
c
0.1 mm
Relative Abundances:
Rare
<1 %
Minor
1-5%
Moderate
5-10%
Common
10-20%
HCnore„�b Abundant
>20%
Sample Description
Lithology: Igneous Rock
Classification (QAPF): Quartz Monzonite
Crystal Size (mm): 0.85
Structures:
massive, fractures
Principal Minerals:
abundant plagioclase; abundant potassium feldspar;
moderate quartz; common biotite
Accessory Minerals:
rare sphene, amphibole, zircon, and apatite
Groundmass:
na
Alteration and Replacement:
rare to minor plagioclase crystals are altered into sericite
and/or illitic clays; rare illitic clays partly fill moldic pores and
fractures
Pore Types:
rare dissolution intracrystal, moldic and fracture pores
Photomicrograph Caption
Plagioclase (Plag) and K-feldspar (KF; stained yellow) are
the most abundant minerals, followed by biotite (Bi) and
quartz (Q) in this igneous rock (quartz monzonite). These
mineral crystals exhibit an interlocking fabric. Accessory
minerals include sphene (Sph), amphibole (Am), zircon and
apatite (Ap). Some plagioclase crystals are heavily altered
into sericite/illitic clays (Ser). Macropores are rare, and
consist of dissolution intracrystal (IP), moldic (MP) and
fracture (Fr) pores. Some moldic pores and fractures are
partly filled with illitic clays (IL). Micropores are probably
rare to minor in abundance and associated with some illitic
clays. The green box in Image A indicates the location of
Image B.

PLATE 5
Thin Section Petrography
Company: SynTerra Corp.
Project: 1026.18-Marshall
Location: na
Sample No.: 5
Sample ID: AL-2(203)
A
a
B
KF
Fqt
-�-:ySph
p\� IP
Or .
KF
1 mm
S
Relative Abundances:
Rare
<1 %
Minor
1-5%
Moderate
5-10%
Common
10-20%
HESERVOIR Abundant
>20%
Sample Description
Lithology: Igneous Rock
Classification (QAPF): Monzonite
Crystal Size (mm): 0.76
Structures:
massive
Principal Minerals:
abundant plagioclase; common potassium feldspar; minor
quartz; abundant biotite
Accessory Minerals:
rare sphene, amphibole, zircon, and apatite
Groundmass:
na
Alteration and Replacement:
rare to minor plagioclase crystals are altered into sericite
and/or illitic clays; rare illitic clays partly fill moldic pores
Pore Types:
rare dissolution intracrystal and moldic pores
Photomicrograph Caption
The principal minerals are plagioclase (Plag), biotite (Bi), K-
feldspar (KF; stained yellow) and quartz in this igneous
rock (monzonite). These mineral crystals show an
interlocking fabric. Accessory minerals are sphere (Sph),
amphibole, zircon and apatite (Ap). The plagioclase is
rarely altered into sericite/illitic clays. Macropores are rare,
and consist of dissolution intracrystal (IP) and moldic (MP)
pores. Note some moldic pores are partly filled with illitic
clays (IL). Micropores are probably rare to minor in
abundance and associated with some illitic clays. The
green box in Image A indicates the location of Image B.

PLATE 6
Thin Section Petrography
Company: SynTerra Corp. Sample Description
Project: 1026.18-Marshall Lithology: Igneous Rock
Location: na
Sample No.: 6 Classification (QAPF): Monzonite
Sample ID: AL-2(260) Crystal Size (mm): 1.04
Structures:
A massive
`Ap T" 41
w , r,.
r
B
Relative Abundances:
Rare
<1 %
Minor
1-5%
Moderate
5-10%
Common
10-20%
HESERVOIR Abundant
>20%
T
i
Principal Minerals:
abundant plagioclase; abundant potassium feldspar; minor
quartz; common biotite
Accessory Minerals:
rare sphene, amphibole, zircon, and apatite
Groundmass:
na
Alteration and Replacement:
rare to minor plagioclase crystals are altered into sericite
and/or illitic clays; rare illitic clays partly fill moldic pores
Pore Types:
rare dissolution intracrystal and moldic pores
Photomicrograph Caption
Plagioclase (Plag) and K-feldspar (KF; stained yellow) are
the most abundant minerals, followed by biotite (Bi) and
quartz (Q) in this igneous rock (monzonite). These mineral
crystals display an interlocking fabric. Accessory minerals
include sphene (Sph), amphibole (Am), zircon and apatite
(Ap). The plagioclase is rarely altered into sericite/illitic
clays. Macropores are rare, and consist of dissolution
intracrystal (IP) and moldic (MP) pores. Some moldic pores
are partly filled with illitic clays (IL). Micropores are probably
rare to minor in abundance and associated with some illitic
clays. The green box in Image A indicates the location of
Image B.

PLATE 7
Thin Section Petrography
Company: SynTerra Corp.
Project: 1026.18-Marshall
Location: na
Sample No.: 7
Sample ID: AL-2(300)
A
x
Plag .
`o
`_.. Sph ,
A
mm
B
s.
Plag
lie
Ser
�,� h►� .
Relative Abundances:
Rare
<1 %
Minor
1-5%
Moderate
5-10%
Common
10-20%
HESERVOIR Abundant
>20%
Sample Description
Lithology: Igneous Rock
Classification (QAPF): Monzonite
Crystal Size (mm): 1.13
Structures:
massive
Principal Minerals:
abundant plagioclase; abundant potassium feldspar; minor
quartz; abundant biotite
Accessory Minerals:
rare sphene, amphibole, zircon, and apatite
Groundmass:
na
Alteration and Replacement:
minor plagioclase crystals are altered into sericite and/or
illitic clays; rare illitic clays partly fill moldic pores
Pore Types:
rare dissolution intracrystal and moldic pores
Photomicrograph Caption
The principal minerals are plagioclase (Plag), K-feldspar
(KF; stained yellow) and biotite (Bi) in this igneous rock
(monzonite). These mineral crystals show an interlocking
fabric. Accessory minerals are sphene (Sph), amphibole
(Am), zircon and apatite (Ap). The plagioclase is locally
altered into sericite/illitic clays (Ser). Macropores are rare,
and consist of dissolution intracrystal and moldic (MP)
pores. Some moldic pores are partly filled with illitic clays
(IL). Micropores are probably rare in abundance and
associated with some illitic clays. The green box in Image A
indicates the location of Image B.