NC0004979_4_FINAL_CSA Supplement 2_Appdx A_20160802

BORING NUMBER BG-4S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 12/21/15 COMPLETED 12/22/15 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
W �
c
o
e
}
to W
}
Y�
p
z
wv
Q
0 Z Q
W
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
Uz
0
W0
W
U
o3
QO
cn Z
W
O
0
Refer to adjacent well BG-4D for lithology
Hole Size:
6" 0'-94'
5
10
15
20
25

BORING NUMBER BG-4S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
wv
Q
-J� Q
>
0>
DESCRIPTION
REMARKS
° W
3
p
o U
QO
m0>
Uz
0
W0
W
U
O
o
W
25
Refer to adjacent well BG-4D for lithology
30
35
40
45
50

BORING NUMBER BG-4S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
wv
Q
-J� Q
>
0>
DESCRIPTION
REMARKS
° W
3
p
o U
QO
m0>
Uz
0
W0
W
U
O
o
W
50
Refer to adjacent well BG-4D for lithology
55
60
65
70
75

BORING NUMBER BG-4S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
wv
Q
-J� Q
>
0>
DESCRIPTION
REMARKS
° W
p
o U
QO
m0>
Uz
0
W
W0
W
U
O
o3
75
Refer to adjacent well BG-4D for lithology
r.
80
Boring Terminated at 94'
85
90
Screened Interval Set at 78.1'-93.1'
Monitoring Well Installed on 12/22/15
Bottom of borehole at 94.0 feet.

BORING NUMBER BG-4D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 12/18/15 COMPLETED 1/9/16 GROUND ELEVATION HOLE SIZE(S) 10, 5.5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell CHECKED BY �F DATE/TIME 1/11/2016 4:00:00 PM 85.30 ft
NOTES 1 DATE/TIME ---
w�
o
C
o
0
_
W
ce-
J>'
Y
C1'
c�
KJ
W v
w
]i
0 zj Q
O j
00 >
o'
DESCRIPTION
REMARKS
° W
—10
m0>
n0
E0
g�
0z
w
w
O
03
2
�z
ofof
0
(ML) SILT WITH SAND, red (1OR 6/3), dry,
Hole Size(s):
non -plastic, cohesive, sand fine grained and
10" 0'-103.2'
subangular, sparse mica (SAPROLITE)
5.5" 103.2'-118'
SD-1
84
5
Continued: Decreasing sand content with depth,
increasing mica, trace kaolin
10
Continued: Trace coarse sand to fine gravel,
subrounded
SD-2
120
15
Continued: Trace reddish yellow (7.5YR 6/6)
20
20'-22' Abundant Mn nodules, trace large
gravel
SD-3
120
25

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER BG-4D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
In
QO
UZ
W
W
U
O
o3
cn Z
of
25
(CL) CLAY, red (2.5YR 5/6) to (2.5YR 4/6), dry,
medium plasticity, cohesive, massive, micaceous
(SAPROLITE) (continued)
26' Gradational contact
30
(ML) SILT, red (2.5YR 5/6) to (2.5YR 4/6), dry,
non -plastic, cohesive, massive, trace fine sand,
micaceous (SAPROLITE)
SD-4
120
35
Continued: Grading to reddish yellow (7.5YR 6/6)
and then to light brown (7.5YR 4/4)
40
Continued: Increasing kaolin content
SD-5
120
45
50

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER BG-4D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
3:
Y�
CY
0z
d
>
m O a
O
O
Y
DESCRIPTION
REMARKS
z W
p
QO
UZ
W
W
U
O
o3
cn Z
of
50
(ML) SILT, light brown (7.5YR 4/4) grading to
pinkish gray (7.5YR 6/6), dry, non -plastic,
cohesive, massive (SAPROLITE)
SD-6
120
55
Continued: Decreasing mica content, kaolin absent
60
Continued: Grading to light brown (7.5YR 6/3) and
then to brown (7.5YR 5/3), dry, friable
SD-7
gg
65
70
(ML) SILT, light brownish gray (10YR 6/2), dry,
non -plastic, cohesive, abundant kaolin nodules up
SD-8
144
to 1/4" in diameter, sparse sand, trace mica, trace
Mn (SAPROLITE)
75

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER BG-4D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
3:
Y�
CY
0z
p
d
>
m O a
O
O
Y
DESCRIPTION
REMARKS
z W
QO
UZ
W
W
U
O
o3
cn Z
75
(ML) SILT, light brownish gray (10YR 6/2), dry,
non -plastic, cohesive, abundant kaolin nodules up
to 1/4" in diameter, sparse sand, trace mica, trace
Mn (SAPROLITE) (continued)
80
(ML) SANDY SILT, yellowish red (5YR 5/6), dry,
non -plastic, cohesive, granular texture, sand fine
to coarse, subangular to subrounded, trace Mn,
mica, and kaolin (SAPROLITE)
SD-9
120
Q
85
90
(SM) SILTY SAND, brown (7.5YR 413), dry to
SD-
moist, non -plastic, slightly cohesive, sand fine to
10
120
coarse, subangular to subrounded, sparse Mn and
kaolin, trace mica (SAPROLITE)
(ML) SILT, yellowish brown (10YR 5/6), dry,
95
non -plastic, cohesive, massive, trace fine sand
(SAPROLITE)
(ML) SILT, dark grayish brown (10YR 4/2), dry,
non -plastic, cohesive, massive, sparse fine sand
L
SD-
with few highly micaceous beds of weathered rock
11
60
(WEATHERED ROCK)

Zz
0
0
0
a
0
U
(n
a
Z
J
BORING NUMBER BG-4D
440
Charlotte,
S. Church Street,
NC2802-2075
Suite 900
PAGE
5 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy
Carolinas
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371
PROJECT LOCATION Gaston County NC
W j
c
o
0
W
CYz
Wp v
d 0
>
m O a
O
O
Y
DESCRIPTION
REMARKS
° W
UZ
w
W
U
O
o3
QO
(n Z
of
100
(ML) SILT and METADIABASE, very weak to
moderate, few strong fragments, dark gray (2.5Y
4/1) to very dark gray (2.5Y 3/1), very fine grained
Encountered SPT Refusal at 102; Reamed
SS - 1
50/0"
phaneritic, massive, few clay and sand beds
10" hole to depth of 103 ; Installed 6" PVC
(WEATHERED ROCK)
casing at 102' and grouted to surface on
12/21/15.
101'-106' Intensely fractured, trace Fe and Mn
staining on fracture surfaces, fractures
105
sub -horizontal and 900
106'-1 08.3'Slightly to moderately fractured
METADIORITE, very strong, black (2.5Y 2.5/1)
and white (N9.5), massive, fresh, competent,
(possible mechanical breaks)
slightly fractured, trace very dark gray (2.5Y 3/1)
RC-1
64
xenoliths (SOUND ROCK)
108.3'-112' Very intensely fractured,
sub -horizontal, very minor Mn staining
110
112'-113.1' Moderately fractured,
sub -horizontal, open, trace Mn staining, some
fractures mineralized
115
RC-2
63
Boring Terminated at 94'
Screened Interval Set at 106-111'
Monitoring Well Installed on 1/9/16
Bottom of borehole at 118.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 - BG-4D: Sample SC-3
Depth: 23.0' - 25.0' Date: 12/18/15
x �
toe
- 3
Photo 2 - BG-4D: Sample SC-4 Depth: 28.0' - 30.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
1

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — BG-4D: Sample SC-4 Depth: 31.0' - 33.0' Date: 12/18/15
Photo 4 — BG-4D: Sample SC-5 Depth: 38.0' — 40.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — BG-4D: Sample SC-6 Depth: 55.0' — 57.0' Date: 12/18/15
Photo 6 — BG-4D: Sample SC-8 Depth: 68.0' - 70.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
D"igb , k14 Plow.+
Izn�r'IS
Photo 7 — BG-4D: Sample SC-8 Depth: 71.0' - 73.0' Date: 12/18/15
Photo 8 — BG-4D: Sample SC-9 Depth: 78.0' - 80.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
4

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 9 — BG-4D: Sample SC-9 Depth: 88.0' - 90.0' Date: 12/18/15
Photo 10 — BG-4D: Sample SC-11 Depth: 99.0' — 100.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — BG-4D: Sample SC-11 Depth: 101.0' — 102.0' Date: 12/18/15
114
Df�E 1Z/��/15
Photo 12 — BG-4D: Sample SS-1 Depth: 102.0' - 102.2' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
6

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 13 — BG-411): Sample SC-12 Depth: 102.0' — 103.0' Date: 12/18/15
Photo 14 — BG-4D: Box 1 of 1 Depth: 103.0' - 118.0' Date: 01/08/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER BG-4BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 12/22/15 COMPLETED 1/8/16 GROUND ELEVATION HOLE SIZE(S) 10, 5.5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
w�
a�
C
o
0
_
W
J>'
Y
O
c�
KJ
W v
w �
]ice
0 zj Q
O Lu
p>
DESCRIPTION
REMARKS
° W
a0
m0>
n0
E0
03
g�
UZ
w
w
O
�z
0
Refer to adjacent well BG-4D for lithology from
Hole Size(s):
0'-100,
10,10'-111,
5.5" 111'-171'
5
10
15
20
25

BORING NUMBER BG-4BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
Hp
}
Y�
p
z
w-J�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
0 U
m0>
O
WU
U
o�
UZ
W
W
< O
0
25
Refer to adjacent well BG-4D for lithology from
0'-100,
30
35
40
45
50

BORING NUMBER BG-4BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
Hp
}
Y�
p
z
w-J�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
0 U
m0>
O
WU
U
o�
UZ
W
W
< O
0
50
Refer to adjacent well BG-4D for lithology from
0'-100,
55
60
65
70
75

BORING NUMBER BG-4BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wz
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
W
Lu
a0
m0><no
a�O
U
°
g-
UZ
w
w
O
o3
0
U)z0
cr
af
Ir
75
Refer to adjacent well BG-4D for lithology from
0'-100,
80
97'-100' Washed out, no recovery
85
90
95
100

BORING NUMBER BG-4BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 5 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
Wp v
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
w
W
U
O
o3
(n Z
of
of
W
100
METADIABASE, moderate strength, dark gray
00'-105' Intensely fractured, combination of
(2.5Y 4/1) to very dark gray (2.5Y 3/1), phaneritic
fractures and mechanical breaks
(WEATHERED ROCK)
RC-1
67
105
Slightly fractured, trace Mn mineralization,
METADIORITE, very strong, black (2.5Y 2.5/1)
and white (N9.5), phaneritic, massive (SOUND
trace healed fractures
ROCK)
RC-2
80
110
109.8'-110.6' Fracture, 700, open, Mn
mineralization, sparse pale olive (5Y 6/3)
mineralization on fracture surface
Installed 6" PVC casing to 111' on 1/5/16 and
grouted to surface
111.2'-112' Fracture, 601, open, Mn
mineralization, sparse pale olive (5Y 6/3)
mineralization on fracture surface
113.3'-114.1' Fracture zone, fresh, no staining,
RC-3
46
possibly mechanical
115
114.9'-115.2' Fracture zone, fresh, no staining,
possibly mechanical
120
120.4' Fracture, open, trace white
mineralization
120.8'-121.1' Fracture, open, 800, slight Mn
RC-4
100
Mineralization, moderately to slightly fractured
125

BORING NUMBER BG-4BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 6 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
o
0
_Uj
rr
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U)ZO
af
D
125
METADIORITE, very strong, black (2.5Y 2.5/1)
and white (N9.5), phaneritic, massive (SOUND
ROCK) (continued)
129', 130.8', 132.5' Healed fractures,
130
RC-5
100
sub -horizontal, indistinct pale olive (10Y 6/4)
nfilling
133'-133.7' Mechanical break zone, trace Mn
on some fracture surfaces
135
RC-6
88
1387-140.1' Healed fracture, 70°-80°, with
orthoclase infilling
140
RC-7
99
144'-147' Trace xenoliths 2"-4" in diameter
145
147' Fresh, slightly fractured
1492-151.5' Healed high angle fracture
150

BORING NUMBER BG-4BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 7 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
:�
UZ
w
w
O
o3
0
U) ZO
cr
af
of
150
METADIORITE, very strong, black (2.5Y 2.5/1)
and white (N9.5), phaneritic, massive (SOUND
ROCK) (continued)
RC-8
100
152'-157' Trace indistinct orthoclase -rich high
angle banding
152.6-154.2' Mechanical break zone, trace Mn
on some fracture surfaces
155
158.5'-161 Mechanical break zone, trace Mn
RC-9
100
on some fracture surfaces
160
1615-163.5' Slightly decomposed
METADIABASE, strong, black (5Y 2.5/1),
phaneritic, massive (SOUND ROCK)
METADIORITE, very strong, black (2.5Y 2.5/1)
and white (N9.5), phaneritic, massive, trace
165
RC-
87
epidote and trace orthoclase (SOUND ROCK)
10
170
Boring Terminated at 171'
Screened Interval Set at 159.8'-164.8'
Monitoring Well Installed on 1/8/16
Bottom of borehole at 171.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — BG-4BR: Sample RC-1 Depth: 97.0' - 106.0' Date: 01/07/16
Photo 2 — BG-4BR: Sample RC-2 Depth: 106.0' - 111.0' Date: 01/07/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs
'poet 2 0r 7
Photo 3 — BG-4BR: Box 1 of 7 Depth: 111.0' - 120.4' Date: 01/07/16
- — r
Photo 4 — BG-4BR: Box 2 of 7 Depth: 120.4' - 129.9' Date: 01/07/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — BG-4BR: Box 3 of 7 Depth 129.9' - 139.1' Date: 01/07/16
Photo 6 — BG-4BR: Box 4 of 7 Depth: 139.1' - 147.9' Date: 01/07/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
3

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs
Photo 7 — BG-4BR: Box 5 of 7 Depth: 147.9'-157.2' Date: 01/07/16
Photo 6 — BG-4BR: Box 6 of 7 Depth: 157.2' - 166.4' Date: 01/07-08/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
'4F,
Photo 7 — BG-4BR: Box 7 of 7 Depth: 166.4' - 171.0' Date: 01/08/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER AB-4BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 1 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 12/17/15 COMPLETED 12/22/15 GROUND ELEVATION HOLE SIZE(S) 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY M. Sheehan/D. Bishuk CHECKED BY DATE/TIME --
NOTES DATE/TIME --
W j
c
o
0
_
rW
�H�
Y�
CY
z
z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
w
W
U
O
o3
cn Z
of
of
0
(CL) LEAN CLAY WITH SAND, slightly mottled,
predominantly red (1 OR 5/6), moist, medium
plasticity, cohesive, highly weathered, micaceous
(SOIL)
SD-1
60
5----------------------
(SC) CLAYEY SAND, predominantly reddish
yellow (5YR 6/6), grading with depth to pinkish
gray (5YR 7/2), moist, medium plasticity,
cohesive, residuum grading downward to relic
rock fabric, highly weathered (SOIL)
10
SD-2
120
13-15': light brownish gray (10YR 6/2). More mafic
than above.
15
--------------------
(CL) LEAN CLAY, light olive gray (5YR 6/2), wet,
medium plasticity, cohesive, aphanitic, very thin (1
mm), Fe -oxide filled fractures, highly weathered.
20
SD-3
120
20-25': same as above but with visible Ca -feldspar
distributed throughout the matrix, metadiorite
schistose fabric (SAPROLITE)
25

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER AB-4BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y�
CY
z
z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
UZ
W
U
o3
QO
In Z
W
of
of
O
25
(CL) LEAN CLAY, light olive gray (5YR 6/2), wet,
medium plasticity, cohesive, aphanitic, very thin (1
mm), Fe-o)ade filled fractures, highly weathered.
(continued)
25': same as 20-25', highly weathered metadiorite
30
SD-4
120
35
40
SD-5
120
45
45-52.4': No sample recovery, driller ran water
while coring 45-55', no recovery of soil
50

Zz
0
0
0
a
U
H
0
a
Z
W
J
BORING NUMBER AB-4BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
Y�
Z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In Z
af
W
W
50
(CL) LEAN CLAY, light olive gray (5YR 6/2), wet,
medium plasticity, cohesive, aphanitic, very thin (1
mm), Fe -oxide filled fractures, highly weathered.
(continued)
--------------------
DIORITE, light bluish gray, medium grained, very
Top of rock at 52.4'
strong, fresh, competent
Large (8" wide) steeply included fracture at
52.4-54.0'
55
6" PVC casing set to 55.0' on 12/17/16; core
META -QUARTZ -DIORITE, very strong, light
bluish gray (1013 711), white (GLEY 1 8/N), bluish
55 to 105' using 3"xY sonic on 12/21/15
gray (513 5/1), Gray (GLEY 1 5/N & 6/N), bluish
black (5PB 2.5/1), Dark Greenish Gray (5GY 4/2),
pale yellowish green (5GY 6/4), and pale olive
(10Y 6/4), phaneritic, non -foliated, fracture
density is not reported due to excessive
mechanical fracturing by Roto-Sonic drilling
Core from 55 to 105' placed in core boxes.
method. Phenocrysts consist of albite and
moonstone plagioclase feldspar, smoky and milky
60
RC-1
84
quartz, amphibole, pyroxene, and muscovite,
partially open fractures with epidote mineralization
in the interval 60.5-64.5' bgs dipping at 400 and
550.
65
Same - except 0.5' thick, cross -cutting aplite
granitic dike at approximately 69-69.5', partially
open fractures with Fe -staining at 66.5-67' (451
dip) and 68-68.6' (350 dip); two open fractures at
69-69.5' (40° dip).
70
RC-2
55
A75

Zz
0
0
0
a
U
0
a
Z
J
BORING NUMBER AB-4BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W Z
c
o
0
_
rW
�H�
Y�
CY
Z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In Z
of
W
75
Same - except one partially open fracture with
epidote mineralization at 75-75.5' (85° dip)
80
RC-3
57
META -QUARTZ -DIORITE, very strong, light
bluish gray (1013 711), white (GLEY 1 8/N), Gray
(GLEY 1 5/N), bluish black (5PB 2.5/1), Dark
Greenish Gray (5GY 4/2), and pale yellowish
green (5GY 6/4), phaneritic, non -foliated,
massive, slightly decomposed to slightly
disintegrated, fracture density is not reported due
to excessive mechanical fracturing by Roto-Sonic
drilling method. Phenocrysts consist of albite and
moonstone plagioclase feldspar, smoky and milky
85
quartz, amphibole, pyroxene, and muscovite, Fe -
and Mn-stained fracture surfaces on numerous
recovered bedrock fragments.
Same - except slightly fractured; partially open
fracture with Mn-staining at 93-94' (551 dip) and
Fe -stained with epidote mineralization at 94.5-95'
90
RC-4
120
(401 dip)
95
Same - except remains slightly fractured, one
closed fracture infilled with epidote mineralization
at 100-100.5' (450 dip), numberous partially open
fractures with epidote mineralization in the interval
101-104.5' with dips at 150, 200, 300, and 700
100

BORING NUMBER AB-4BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075
PAGE 5 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371
PROJECT LOCATION Gaston County NC
W j
c
o
0
W
LLJ
z
Wp v
d 0
>
m O a
FD
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
UZ
w
U
03
QO
w
w
O
100
(n Z
105
115
Bottom of borehole at 105.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — AB-41BR: Sample SC-1 Depth: 0.0' - 5.0' Date: 12/17/15
Photo 2 — AB-4BR: Sample SC-1 Depth: 0.0' - 5.0' Date: 12/17/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
eam
y
WMW4s=., ..
Photo 3 — AB-41BR: Sample SC-2
/ a . ,._-W
Depth: 5.0' - 10.0'
Date: 12/17/15
Photo 4 — AB-4BR: Sample SC-2 Depth: 5.0' - 10.0' Date: 12/17/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
y
Photo 5 — AB-41BR: Sample SC-2 Depth: 5.0' - 10.0' Date: 12/17/15
Photo 6 — AB-4BR: Sample SC-2 Depth: 5.0' - 10.0' Date: 12/17/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 7 — AB-41BR: Sample SC-2 Depth: 5.0' - 10.0' Date: 12/17/15
Photo 8 — AB-41BR: Sample SC-2 Depth: 5.0' - 10.0' Date: 12/17/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 9 — AB-41BR: Sample SC-3 Depth: 15.0' - 25.0' Date: 12/18/15
Photo 10 — AB-41BR: Sample SC-3 Depth: 15.0' - 25.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — AB-41BR: Sample SC-3
Date: 12/18/15
Depth: 15.0' - 25.0'
Vir—
Photo 12 — AB-41BR: Sample SC-3 Depth: 15.0' - 25.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 13 — AB-41BR: Sample SC-3 Depth: 15.0' - 25.0' Date: 12/18/15
f I
as i �I1. � 7. � 7 •.i i.ti
45 46 147 143 J49 3,50 15T 152 753 f54
.1 .2 .3 .4 .5 .8 .7 .9 ,9
Photo 14 — AB-41BR: Sample SC-3 Depth: 15.0' - 25.0'
Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 15 — AB-41BR: Sample SC-4 Depth: 25.0' - 35.0' Date: 12/18/15
e i a
:
Photo 16 — AB-4BR: Sample SC-4 Depth: 25.0' - 35.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 17 — AB-41BR: Sample SC-4
Depth: 25.0' - 35.0' Date: 12/18/15
Photo 18 — AB-41BR: Sample SC-4 Depth: 25.0' - 35.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 19 — AB-41BR: Sample SC-5
Depth: 35.0' - 45.0'
Date: 12/18/15
Photo 20 — AB-41BR: Sample SC-5 Depth: 35.0' - 45.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ���
Appendix A, Sample Photographs
Photo 21 — AB-41BR: Sample SC-5
;St?
Depth: 35.0' - 45.0' Date: 12/18/15
a
Photo 22 — AB-41BR: Sample SC-5 Depth: 35.0' - 45.0'
Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 23 — AB-41BR: Sample SC-6 Depth: 45.0' - 55.0' Date: 12/18/15
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER AB-14BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 1/28/16 COMPLETED 2/10/16 GROUND ELEVATION HOLE SIZE(S) 10, 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY DATE/TIME 2/17/2016 8:05:00 AM 10.33 ft
NOTES 1 DATE/TIME ---
LL j
a
C
8
0
_Lu
rt
U)
3: H —1
}
>
Y 0�
o
ww
w o
zj Q
O w
0>
DESCRIPTION
REMARKS
° W
0
aU
m0>
n0
E0
03
g0
UZ
w
w
O
� Z
0
(ML) SILT, red (2.5YR 4/6), moist, non -plastic,
Hole Size(s):
non -cohesive, trace sand and mica (SOIL)
10" 0'-65.0'
9" 65.0'-84.0'
5" 84.0'-130.0'
(ML) SILT, red (2.5YR 5/8) and brownish yellow
(10YR 6/8), moist, non -plastic, non -cohesive,
SD-1
96
trace mica, indistinct relict foliation (SAPROLITE)
5
(ML) SILT, yellowish red (5YR 5/8) and yellow
(10YR 7/6), moist, non -plastic, non -cohesive,
micaceous, phaneritic, distinct relict foliation, Mn
nodules and veins (SAPROLITE)
(CL) CLAY, strong brown (7.5 YR 4/6), moist, low
10
plasticity, cohesive, aphanitic, massive
(SAPROLITE)
11.0'-17.5' Quartz pegmatite dike
(GW-GM) GRAVEL WITH SILT, white (N9), pale
orange yellow (10YR 9/2) and yellowish brown
(10YR 5/4), dry, gravel to cobble sized quartz
fragments (SAPROLITE/WEATHERED ROCK)
SD-2
96
15
(ML) SILT, light yellowish brown (70YR 6/4) and
white (N9), moist, non -plastic, non -cohesive,
phaneritic (SAPROLITE)
20
SD-3
120
25

BORING NUMBER AB-14BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U) Z
af
of
25
(ML) SILT, light yellowish brown (70YR 6/4) and
25.0' Weather Meta -Diorite parent rock
white (N9), moist, non -plastic, non -cohesive,
phaneritic (SAPROLITE) (continued)
Continued: abundant strong brown (7.5YR 5/6)
oxidized zones
30
(ML) SILT, light olive brown (2.5Y 5/4) and white
(N9), dry, non -plastic, non -cohesive, phaneritic,
sub -horizontal foliation (SAPROLITE)
SD-4
120
35
Continued: abundant strong brown (7.5YR 5/6)
oxidized zones with relict fractures and Mn
staining
40
SD-5
120
45
50

BORING NUMBER AB-14BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
o
0
_uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U) Z
a
50
(ML) SILT WITH SAND, light olive brown (2.5Y
50.0'-51.0' Relict fracture, 70°, clay filled, Fe
5/4), white (N9), and black (2.5Y 2.5/1), dry,
stained
non -plastic, non -cohesive, with coarse sand sized
fragments (SAPROLITE)
SD-6
120
55
58.0'-65.0' Weathered Meta -Diorite
(SW-SM) SAND WITH SILT, olive brown (2.5Y
4/3), dry, non -plastic, non -cohesive, fine to
interlayered with weathered Meta-Diabase
medium (SAPROLITE)
60
Continued: olive (5Y 4/3), predominantly fine
SD-7
120
65
65.0' Weather Meta-Diabase parent rock
(SW-SM) SAND WITH SILT AND GRAVEL,
grayish olive (10Y 5/2), dry, non -plastic,
non -cohesive, gravel sized fragments of Meta
Diabase (SAPROLITE/WEATHERED ROCK)
SD-8
116
70
75

Zz
0
0
0
a
0
U
H
0
a
Z
J
BORING NUMBER AB-14BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
Wp v
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
w
W
U
O
o3
cn Z
of
0'
W
75
(SW-SM) SAND WITH SILT AND GRAVEL,
grayish olive (10Y 5/2), dry, non -plastic,
non -cohesive, gravel sized fragments of Meta
Diabase (SAPROLITE/WEATHERED ROCK)
(continued)
80
SD-9
60
0.5'-82.0' Moderately to intensely broken
META-DIABASE, very strong, dark gray (N4),
aphanitic, non -foliated, massive
(mechanical)
82.0'-82.6' Intensely fractured, sub -horizontal
to 400, Mn stained
META -QUARTZ DIORITE, very strong, white (N9)
and black (N2.5), phaneritic, massive, greenish
bands from 85.3' to 85.5' (SOUND ROCK)
Reamed 9" hole to 84.0', installed 6" PVC
85
casing to 83.5', and grouted to surface; Began
sonic coring at 84.0'
RC-1
70
rv.
RC-2
93
89.0' Fracture, 400, epidote mineralization
RC-3
87
90
90.1', 90.3', and 90.5', Fractures, 300 to 600,
chlorite and epidote mineralization
META-DIABASE, very strong, dark gray (1\14),
aphanitic, non -foliated, massive, healed fractures
between 400 and 700 common (SOUND ROCK)
92.1'-92.5' Fracture zone, sub -horizontal to
near vertical, pyrite mineralization, core loss
92.6'-93.0' Fracture, 700, pyrite mineralization
95
RC-4
87
.:
97.2' Fracture, 30°, no staining
META -QUARTZ DIORITE, very strong, white (N9)
97.5' Possible zone of core loss
and black (N2.5), phaneritic, massive, greenish
bands 3" to 4" common throughout (SOUND
ROCK)
100

BORING NUMBER AB-14BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
o3
:�
UZ
w
w
O
0
U) ZO
cr
af
of
100
META -QUARTZ DIORITE, very strong, white (N9)
and black (N2.5), phaneritic, massive, greenish
bands 3" to 4" common throughout (SOUND
ROCK) (continued)
101.6' Fracture, 30°, no staining
102.0' Fracture, 30°, no staining
105
RC-5
100
107.1', 107.2', and 107.3', Fractures,
META-DIABASE, very strong, dark gray (1\14),
aphanitic, non -foliated, massive (SOUND ROCK)
horizontal, no staining
108.3' Fracture, 30°, chlorite and pyrite
mineralization
108.9' Fracture, sub -horizontal, trace chlorite
110
and pyrite
109.9' Fracture, 30°, chlorite and pyrite
mineralization
110.0' Fracture, sub -horizontal, chlorite and
pyrite mineralization
110.6' Fracture, 40°, chlorite mineralization
113.3', 113.6', and 113.8', Fractures, 30°, no
staining
META -QUARTZ DIORITE, very strong, white (N9)
115
RC-6
97
and black (N2.5), phaneritic, massive, xenoliths
common (SOUND ROCK)
120
120.6'-121.7' Fracture, 70°, chlorite
mineralization
125

440 S. Church Street, Suite 900
F)ICharlotte, NC 2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER AB-14BR
PAGE 6OF6
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv, NC
W j
c
o
0
W
Wp v
d 0
>
m O a
O
O
Y
DESCRIPTION
REMARKS
° W
UZ
W
U
o3
QO
w
O
125
100
META -QUARTZ DIORITE, very strong, white (N9)
and black (N2.5), phaneritic, massive, xenoliths
-
common (SOUND ROCK) (continued)
-
26.7'-128.2' Intensely broken (mechanical)
IABASE, very strong, dark gray (N4),
c, non -foliated, massive (SOUND R(
Bottom of borehole at 130.0 feet.
129.6-130.0' Very intensely fractured
Boring Terminated at 94'
Screened Interval Set at 90'-95'
Monitoring Well Installed on 2/10/16

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
Photo 1 — AB-14BR: Sample SC-1 Depth: 0.0' - 8.0' Date: 01/28/16
Photo 2 — AB-14BR: Sample SC-2 Depth: 8.0' - 18.0' Date: 01 /28/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

7�`>vj1Y,-,
�1• � ��•+tray re"r.-�r`'1� ,'.yy' S'�'�' „�y`�� Jl _ � � ' �'� :, �� �,'. "d.
t i`3Ff\"
✓' i �_ � � �� 4 �/.��.,,V iti4r..�«i" ��t [`a� ��`'�'P � 1.;0.�-`w1"(�{��y' ; � Y"� '�k` +�, $
- "� _ -K i. -5�.. _ � 'f}._ i ... i. * 1j.�,� • 'mar ". Pl''� w. . -. F ''rT. •. �

rInor
� � •� � � �AS'1, ,. iR
e
- - F� k a 6t
.. t'uS' i
-x
f �
-}J1
tit' 14 }'s* 'r#,✓ "i �'�,.�� ?�. J ��`-

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
hdrinc.com
Photo 7 — AB-14BR: Sample SC-7
Depth: 58.0' — 68.0' Date: 01 /28/16
Photo 8 — AB-14BR: Sample SC-8 Depth: 68.0' — 78.0'
440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
Date: 01 /28/16
4

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
%��t ��wefgy—/kllen 51.0.�+0+1
R&41 F3P,
Photo 9 — AB-14BR: Box 1 of 5 Depth: 84.0'-94.5' Date: 02/10/16
U 1Cetnercjy-1-ki r.
Box 3 0{' S
Photo 10 — AB-14BR: Box 2 of 5 Depth: 94.5' — 105.0' Date: 02/10/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
I IJ ail Y-
Photo 11 — AB-4BR: Box 3 of 5 Depth: 105.0' — 115.0' Date: 02/10/16
Photo 12 — AB-14BR: Box 4 of 5 Depth: 115.0' — 124.3' Date: 02/10/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 13 — AB-14BR: Box 5 of 5 Depth: 124.3' — 130.0' Date: 02/10/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER GWA-613A
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 12/14/15 COMPLETED 1/12/16 GROUND ELEVATION HOLE SIZE(S) 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY DATE/TIME 1/25/2016 10:40:00 AM 33.60 ft
NOTES Replacement for Well GWA-6D 1 DATE/TIME ---
wz
a�
C
o
0
_
W
ce-
J>'
Y
C1'
c�
KJ
W v
w �
]i
0 zj Q
O j
00 >
o'
DESCRIPTION
REMARKS
° W
a0
m0>
n0
E0
03
g�
0z
w
w
O
2
�z
0
(SP-SM) POORLY GRADED SAND WITH SILT,
red (1OR 5/8) grading downward to reddish yellow
(5YR 6/6), moist, non -plastic, non -cohesive, poor
Hole size(s): 9", 0-115.0,; 5", 115.0-126.0'
sprolitic fabric, fine grained (SAPROLITE)
SD-1
60
5
--------------------
(SP-SM) POORLY GRADED SAND WITH SILT,
predominantly red (2.5YR 5/6) grading downward
to light red (2.5YR 6/6), moist, non -plastic,
non -cohesive, fine to very fine grained, trace
msucovite (SOIL)
10
SD-2
120
15
--------------------
(SP-SM) POORLY GRADED SAND WITH SILT,
predominantly light red (2.5YR 6/6), moist,
non -plastic, non -cohesive, fine to very fine
grained, poor relic rock fabric, highly weathered
(SAPROLITE)
20
SD-3
144
25
C R�

BORING NUMBER GWA-6DA
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
LLl j
c
o
e
=
� o
HLu
C/)
HD
>-
r
p
z
0--
0
0 Q
j
p>
DESCRIPTION
REMARKS
° W
p
a0
�b
m0>
UZ
0
W0
U
o3
O
�
W
LU
0
25
(ML) SILT WITH SAND, mottled, very pale brown
(10YR 7/3), wet, low plasticity, cohesive, fine
grained, moderately relic rock fabric, highly
weathered micaceous (SAPROLITE)
30
SD-4
120
35
40
SD-5
96
45
45': same as above, moderate relic rock fabric with
weak foliation
50

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER GWA-613A
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
Y�
z
z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In Z
af
x
50
(ML) SILT WITH SAND, mottled, very pale brown
(10YR 7/3), wet, low plasticity, cohesive, fine
grained, moderately relic rock fabric, highly
weathered micaceous (SAPROLITE) (continued)
55
--------------------
(SP-SM) POORLY GRADED SAND WITH SILT,
Possible weathered diabase dike or sill.
light yellowish brown (2.5YR 6/4), moist,
Distinct textural and mineralogical change from
non -plastic, cohesive, fine grained, massive to
above.
weakly migmatitic, relic rock fabric, highly
weathered, infrequent manganese filled relic
fractures (SAPROLITE)
60
SD-7
120
--------------------
(SP-SM) POORLY GRADED SAND WITH SILT,
Bottom contact @ 64'
65
light gray (2.5YR 7/2), wet, non -plastic, cohesive,
fine, uniformly grained, well preseved igneous
(phaneritic) texture, highly weathered diorite
(SAPROLITE)
70
SD-8
120
75

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER GWA-613A
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y
CY
0z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
zo3
QO
UZ
W
W
U
O
In Z
of
75
(SP-SM) POORLY GRADED SAND WITH SILT,
light gray (2.5YR 7/2), wet, non -plastic, cohesive,
fine, uniformly grained, well preseved igneous
(phaneritic) texture, highly weathered diorite
(SAPROLITE) (continued)
75': same as above, thin, steeply inclined, Fe-o)ade
stained relic fracture present from —75-80'
(SAPROLITE)
80
SD-9
120
85
85': same as above, diorite -highly weathered
(SAPROLITE), No rock (PWR) fragments
90
SD -
10
120
----------------------
(SW-SM) WELL GRADED SAND WITH SILT,
95
olive brown (2.5YR 4/3), fine grained, highly
`weathered, possible diabase (SAPROLITE) _ J
Lost 95-105' core sample in hole on first
(SW-SM) WELL GRADED SAND WITH SILT,
attempt. Poorly recovery - appro)amately 4' on
wet, olive brown (2.5YR 4/3), fine to medium
second attempt
grained, highly weathered diabase (PWR)
100
SD -

BORING NUMBER GWA-613A
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
Wv
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
aU
m0><no
a�O
U
03
UZ
w
w
O
0
��
a
100
(SW-SM) WELL GRADED SAND WITH SILT,
Sample is highly disturbed from first recovery
wet, olive brown (2.5YR 4/3), fine to medium
attempt
grained, highly weathered diabase (PWR)
(continued)
105
Sharp contact with top of competent rock; thin
(5) zone of PWR above.
----------------------
META-QUARTZ DIORITE, very strong, light gray,
medium grained, non -foliated, isotropic, fresh to
slightly decomposed, competent (107-114'),
intensely fracturered from 114-115'.
110
SD -
12
120
i
Note: Bottom of 6" PVC casing at 114.0', cored
115
—1' grout below casing; casing set to 115' on
12/16/15
META -QUARTZ DIORITE, very strong, white
(N9-N8) and black (N2.5), phaneritic, massive to
very thinly foliated (WEATHERED/FRACTURED
ROCK)
117.5-1205: Intensely fractured
120
RC-1
56
Monitoring well installed 1/12/16, well screen
125
interval 119.0-124.0'

440 S. Church Street, Suite 900
Charlotte, NC2875
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-6DA
PAGE 6OF6
PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv. NC
W �
c
8-1
e
H
HW
�ZJ
Y�
C)
z
z�
w
W 0
j� Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
O
wO
U
o�
UZ
w
<0
Lu
0
IIRC - 2 20 Collap�e!
Bottom of borehole at 126.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-6DA: Box 1 of 1 Depth: 115.0' - 126.0' Date: 01/11-12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
1

BORING NUMBER GWA-16S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 1/12/16 COMPLETED 1/13/16 GROUND ELEVATION HOLE SIZE(S) 4, 7 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY M. Sheehan CHECKED BY 3--' DATE/TIME 1/12/2016 50.00 ft
NOTES 1 DATE/TIME 1/13/2016 36.00 ft
LLJ �
c
o
e
=
}
HLu
to w
}
p
z
wv
_j Q
-, D Q
>
p>
DESCRIPTION
REMARKS
° W
p
dU
QO
m0>
Uz
O
w
EO
w
U
O
o3
cn z
Cf
0
See boring log for GWA-16D for lithology
Drilled to 60' with 4" x 7" sonic system
5
10
15
20
25

BORING NUMBER GWA-16S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
wv
Q
-,� Q
j
p>
DESCRIPTION
REMARKS
° W
p
o U
QO
m0�
Uz
0
w
w0
W
U
0
o3
25
See boring log for GWA-16D for lithology
(continued)
30
1
35
40
r.
45
50

BORING NUMBER GWA-16S
440 S. Church Street, Suite 900
Charlotte, NC2802-2075
PAGE 3 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen
-Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION
Gaston County NC
W j
c
o
0
_
rW
�H�
Y�
z
z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
In
UZ
W
U
o�
QO
cn Z
w
of
O
50
See boring log for GWA-16D for lithology
(continued)
a
c�
z
w
55
J
Q
Z
LD
H
Q
Q
U
H
U
O
a
z
w
J
g 60
Bottom of borehole at 60.0 feet.
m
m
0
O
Q
a
i7
z
Y
0
O
a_
U
0
co
0
m
N
N
H
Q1
g
0
z
c�
0
J
Z
0
m
Q
Z
J
O
Q
U
2
H
O
z

BORING NUMBER GWA-16D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 1 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 1/7/16 COMPLETED 1/13/16 GROUND ELEVATION HOLE SIZE(S) 9, 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY M. Sheehan/D. Bishuk CHECKED BY DATE/TIME --
NOTES DATE/TIME --
W Z
c
o
0
_
rW
�H�
Y�
CY
Z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
UZ
W
U
o3
QO
cn Z
W
of
of
O
0
(CL) LEAN CLAY, red (1 OR 5/6), moist, medium
plasticity, cohesive, highly weathered,
structureless (SOIL)
SD-1
60
5
--------------------
(ML) SILT, reddish yellow (5YR 6/6), moist, low
plasticity, cohesive, highly weathered, diorite
saprolite, minor hydrothermal quartz fragments
from 14 to 16' (SAPROLITE)
10
SD-2
120
15
20
SD-3
120
25

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER GWA-16D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y
CY
0z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
QO
UZ
W
W
U
O
03
In Z
of
25
(SM) SILTY SAND, pale brown (10YR 6/3)
grading downward to light gray (10YR 7/1),
non -plastic, moist, non -cohesive, highly
weathered, no rock fragments, poor relic rock
(diorite) fabric (SAPROLITE)
30
SD-4
120
35
--------------------
(SP-SM) POORLY GRADED SAND WITH SILT,
uniformly mottled white and light gray (10YR 7/1),
loose (estimated), non -plastic, moist,
non -cohesive, moderately weathered, medium
grained sand, highly disintegrated, moderate relic
rock fabric (diorite) (SAPROLITE)
40
SD-5
120
45
--------------------
(SW-SM) WELL GRADED SAND WITH SILT,
uniformly mottled white and light brownish gray
(10YR 6/2), loose (estimated), non -plastic, moist
to wet, non -cohesive, moderately weathered,
medium grained sand, no rock fragments
(SAPROLITE)
L5O
_L

zz
0
S
0
a
0
U
H
U
O
a
z
W
J
BORING NUMBER GWA-16D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
Y�
z
z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In Z
af
x
50
(SW-SM) WELL GRADED SAND WITH SILT,
uniformly mottled white and light brownish gray
(10YR 6/2), loose (estimated), non -plastic, moist
to wet, non -cohesive, moderately weathered,
medium grained sand, no rock fragments
(SAPROLITE) (continued)
55
--------------------
(SW-SM) WELL GRADED SAND WITH SILT,
weakly mottled, grayish brown (2.5Y 5/2),
non -plastic, moist to wet, non -cohesive at bottom
of run/cohesive at top of run, medium to coarse
grained sand, few cobbles, poor relic rock (diorite)
fabric (SAPROLITE)
60
SD-7
120
65
Approbmately 24 inch seam of moderately
weathered to slightly decomposed, moderately
fractured diorite. Depth interval uncertain - 65-73'.
Recovered soil from below rock
70
SD-8
29
--- -----------------
SW-SM) WELL GRADED SAND WITH SILT,
gray (2.5Y 511), very loose (estimated),
non -plastic, moist, non -cohesive, sample highly
75
disturbed diorite saprolite (SAPROLITE)

zz
0
0
0
a
0
U
H
U
O
a
z
W
J
BORING NUMBER GWA-16D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y
CY
0z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
QO
UZ
W
W
U
O
03
In Z
of
75
(SW-SM) WELL GRADED SAND WITH SILT,
gray (2.5Y 5/1), very loose (estimated),
non -plastic, moist, non -cohesive, sample highly
disturbed diorite saprolite (SAPROLITE)
(continued)
80
SD-9
36
85
--------------------
DIORITE, moderately decomposed, thin diabase
seam (6") present at top of sample. Rock exhibits
weathered joints. Feldspars highly weathered.
92.5-95.0: Diabase, moderately to slightly
decomposed, highly weathered at bottom of core
run (PWR)
90
SD-
10
70
Top of Rock at 92'. 6" PVC set to 95' on 1/8/16
95
100

Zz
0
0
0
a
U
(n
0
a
Z
J
BORING NUMBER GWA-16D
440 S. Church Street,
Charlotte, NC2802-2075
Suite 900
PAGE 5 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Allen
-Post CSA Additional Assessment
PROJECT NUMBER 269371
PROJECT LOCATION
Gaston County NC
W j
c
o
0
W
Lu
Wp v
d 0
>
m O a
FD O
0 O
Y
DESCRIPTION
REMARKS
° W
UZ
w
W
U O
o�
QO
(n Z
100
68
META -QUARTZ -DIORITE, very strong, light
bluish gray (10B 7/1), white (GLEY 1 8/N), Gray
(GLEY 1 5/N), bluish gray (56 5/1), Dark
Greenish Gray (5GY 4/2), dark bluish gray (10B
4/1), bluish black (5PB 2.5/1), pale yellowish
green (5GY 6/4), reddish yellow (7.5YR 6/8), and
red (2.5YR 4/8), phaneritic, non -foliated, massive,
slightly decomposed, slightly disintegrated,
fracture density is not reported due to excessive
mechanical fracturing by Roto-Sonic drilling
105
method. Phenocrysts consist of albite and
moonstone plagioclase feldspar, smoky and milky
quartz, amphibole, pyroxene, and muscovite,
partially open fractures with epidote mineralization
and Fe- and Mn-staining at 96.5' (751 dip),
97.97.5' (300 dip), 99-99.4' (600 dip), and Fe- and
Mn-stained fracture surfaces on numberous
RC-2
50
broken pieces of recovered bedrock. (continued)
Same - except two partially open fractures with Fe
and Mn-staining at 106-107' (60° & 751 dips),
additional partially open fractures with epidote
mineralization on numerous broken pieces of
110
recovered bedrock within interval 108-110', one
closed fracture with epidote mineralization at
106.5-107.5' (75° dip). Grout intrusion at 108-1 0'
115
Bottom of borehole at 115.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-16D: Sample SC-1 Depth: 0.0' - 5.0'
Date: 01 /07/16
rS/74
�7E
l3aR�ry
DEPTa
S*1n ""
B�V'rTonn e
Photo 2 — GWA-16D: Sample SC-1 Depth: 0.0' - 5.0' Date: 01/07/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — GWA-16D: Sample SC-2 Depth: 5.0' - 15.0' Date: 01/07/16
f" ,.. f WWI
Photo 4 — GWA-16D: Sample SC-2 Depth: 5.0' - 15.0' Date: 01/07/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
MM�1II
laAft,
IMIMti
MMMM
Photo 5 — GWA-16D: Sample SC-2
Depth: 5.0' - 15.0' Date: 01/07/16
Photo 6 — GWA-16D: Sample SC-2 Depth: 5.0' - 15.0' Date: 01/07/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 7 — GWA-16D: Sample SC-3 Depth: 15.0' - 25.0' Date: 01/08/16
Photo 8 — GWA-16D: Sample SC-3 Depth: 15.0' - 25.0' Date: 01/08/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
ALLEN Sy
wr'. ]AN$luld
hegi +4. Gwa- %D
DEFT++: 13-gS Fr
Photo 9 — GWA-16D: Sample SC-3 Depth: 15.0' - 25.0' Date: 01/08/16
Photo 10 — GWA-16D: Sample SC-4 Depth: 25.0' - 35.0' Date: 01/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 - GWA-16D: Sample SC-4 Depth: 25.0' - 35.0' Date: 01/11/16
Photo 12 - GWA-16D: Sample SC-4 Depth: 25.0' - 35.0' Date: 01/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
k V
' .,;.
ago
M
Photo 13 — GWA-16D: Sample SC-5 Depth: 35.0' - 45.0' Date: 01/11/16
Photo 14 — GWA-16D: Sample SC-5 Depth: 35.0' - 45.0' Date: 01/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 15 — GWA-16D: Sample SC-6 Depth: 45.0' - 55.0' Date: 01/11/16
Photo 16 — GWA-16D: Sample SC-6 Depth: 45.0' - 55.0' Date: 01/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
If
Photo 17 — GWA-16D: Sample SC-6 Depth: 45.0' - 55.0' Date: 01/11/16
Photo 18 — GWA-16D: Sample SC-6 Depth: 45.0' - 55.0' Date: 01/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 19 — GWA-16D: Sample SC-6 Depth: 45.0' - 55.0' Date: 01/11/16
Photo 20 — GWA-16D: Sample SC-7 Depth: 55.0' - 65.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 21 — GWA-16D: Sample SC-7 Depth: 55.0' - 65.0' Date: 01/12/16
Photo 22 — GWA-16D: Sample SC-7 Depth: 55.0' - 65.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
55 56 57 58 59
Photo 23 — GWA-16D: Sample SC-7 Depth: 55.0' - 65.0'
e 65 b6
6T 68t 64 aTC
Date: 01 /12/16
Photo 24 — GWA-16D: Sample SC-8 Depth: 65.0' - 75.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ���
Appendix A, Sample Photographs
:. „NAM
f .&�
Photo 25 — GWA-16D: Sample SC-8 Depth: 65.0' - 75.0'
`!rid
• t r _ .d k th ;y °,
: r �
ky '
d V
{ � _ • - �. a ��`d" l �}
Date: 01 /12/16
Photo 26 — GWA-16D: Sample SC-8 Depth: 65.0' - 75.0' Date: 01/12/16
hdrinc.com
440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs FN
Mr -
Photo 27 — GWA-16D: Sample SC-9 Depth: 75.0' - 85.0' Date: 01/12/16
Photo 28 — GWA-16D: Sample SC-10 Depth: 85.0' - 95.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
SITEALLEN 5,
A I`E ; 7AN 12 2c
r3ORIJNI ; GWA-1,
DIFPTN= 85-95
Photo 29 — GWA-16D: Sample SC-10 Depth: 85.0' - 95.0' Date: 01/12/16
Photo 30 — GWA-16D: Sample SC-10 Depth: 85.0' - 95.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 31 — GWA-16D: Box 1 of 1 Depth: 95.0' - 110.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER GWA-17S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 1/5/16 COMPLETED 1/5/16 GROUND ELEVATION HOLE SIZE(S) 4, 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY M. Sheehan CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
LLJ �
c
o
e
=
}
HLu
to w
}
p
z
wv
_j Q
-, D Q
>
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
O
EO
U
o3
QO
Uz
w
w
O
cn z
Cf
0
See Boring Log for GWA-17D for lithology
Drilled 0-70' using 8"x9" sonic, drilled 70-85'
using 4"x6" sonic
5
10
15
20
25

BORING NUMBER GWA-17S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
wv
Q
-j� Q
j
0>
DESCRIPTION
REMARKS
° W
3
p
o U
QO
m0>
Uz
0
W
w0
W
U
0
o
25
See Boring Log for GWA-17D for lithology
(continued)
30
35
40
45
50

BORING NUMBER GWA-17S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
wv
Q
-j� Q
j
0>
DESCRIPTION
REMARKS
° W
3
p
o U
QO
m0>
Uz
0
W
w0
W
U
0
o
50
See Boring Log for GWA-17D for lithology
(continued)
55
60
65
70
75

BORING NUMBER GWA-17S
440 S. Church Street, Suite 900
Charlotte, NC2802-2075
PAGE 4 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen
-Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION
Gaston County NC
W j
c
o
0
_
rW
�H�
Y�
CY
z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
In
UZ
w
U
o�
QO
cn Z
w
of
O
75
See Boring Log for GWA-17D for lithology
(continue(l)
a
c�
z
w
80
J
Q
Z
LD
H
Q
Q
U
H
U
O
a
z
w
J
g 85
Bottom of borehole at 85.0 feet.
C,
0
O
Q
a
i7
z
Y
0
O
a_
U
0
co
0
m
N
N
H
Q1
g
0
z
c�
0
J
Z
O
m
Q
Z
J
O
Q
U
2
H
O
z

BORING NUMBER GWA-17D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 12/22/15 COMPLETED 1/6/16 GROUND ELEVATION HOLE SIZE(S) 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY M. Sheehan/D. Bishuk CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
w�
o
C
o
0
_
W
J>'
Y
O
c�
KJ
W v
w �
]ice
0 zj Q
O j
00 >
DESCRIPTION
REMARKS
° W
a0
m0>
n0
E0
03
g�
UZ
w
w
O
z
of
0
(CL) LEAN CLAY, red (1OR 5/6), moist, medium
plasticity, cohesive, highly weathered, very fine
grained (SOIL)
Drill method for surface casing 8" sonic core,
9" override casing; Drilling method for rock
core: 3" sonic core, 5" reaming casing
SD-1
60
5
5-15': same as above, grades downward to reddish
yellow (5YR 6/6). Occasional black manganese
oxide stains on relic fractures (SOIL)
10
SD-2
120
15
15-25': same as above, reddish yellow (5YR 6/6)
throughout core run. Highly weathered, no rock
fragments, MnOx staining on relic fractures
(SOIL)
20
SD-3
120
25

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER GWA-17D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y�
CY
z
z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In Z
of
of
25
(CL) LEAN CLAY, red (1 OR 5/6), moist, medium
plasticity, cohesive, highly weathered, very fine
grained (SOIL) (continued)
25-35': same as above, no rock fragments,
increasing grain size with depth (RESIDUUM)
30
SD-4
120
35
--------------------
(SM) SILTY SAND, brownish yellow (10YR 6/6)
grading downward to gray (10YR 5/1), moist, low
plasticity, cohesive, highly weathered, fine to
medium grained, very poor relic rock fabric
(RESIDUUM)
40
SD-5
120
45
--------------------
(ML) SILT WITH SAND, gray (10YR 511) grading
downward to mottled white and light gray (10YR
7/1), moist, non -plastic, predominantly
non -cohesive, highly weathered, no relic rock
fabric, no rock fragments
L5O

zz
0
0
0
a
0
U
H
U
O
a
z
W
J
BORING NUMBER GWA-17D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
Y�
z
z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In z
af
x
50
(ML) SILT WITH SAND, gray (10YR 5/1) grading
downward to mottled white and light gray (10YR
7/1), moist, non -plastic, predominantly
non -cohesive, highly weathered, no relic rock
fabric, no rock fragments (continued)
55
--------------------
(SM) SILTY SAND, uniformly mottled, light gray
(10YR 7/2), moist, non -plastic, cohesive,
moderately weathered, fine grained, moderate
relic diorite rock fabric (SAPROLITE)
60
SD-7
120
65
--------------------
(SM) SILTY SAND, predominantly light yellowish
brown (10YR 6/4), moist to dry, non -plastic,
non -cohesive, highly weathered, uniformly fine
grained, no relic rock fabric (SOIL)
70
SD-8
120
75

zz
0
0
0
a
0
U
H
U
O
a
z
W
J
BORING NUMBER GWA-17D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y
CY
0z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
QO
UZ
w
W
U
O
03
In Z
of
75
(SM) SILTY SAND, predominantly light yellowish
brown (10YR 6/4), moist to dry, non -plastic,
non -cohesive, highly weathered, uniformly fine
grained, no relic rock fabric (SOIL) (continued)
75-78': same as above, predominantly brownish
SD-9
60
yellow (10YR 6/6).
78-80': mottled white and gray (10YR 6/1)
(SAPROLITE)
80
--------------------
(SW-SM) SAND WITH SILT, light brownish gray
(2.5YR 6/2) moist, non -plastic, non -cohesive
(PARTIALLY WEATHERED ROCK)
SD-
60
10
85
No photos of SC-11 and SC-12 samples -
90
SD -
11
120
inadvertently discarded by drill crew
95
SD-
60
12
100

Zz
0
FL
0
a
U
0
a
Z
J
BORING NUMBER GWA-17D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 5 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
Wp v
d 0
>
m O a
O
O
Y
DESCRIPTION
REMARKS
° W
UZ
w
W
U
O
o3
QO
(n Z
of
100
Top of Rock at 100'
SD-
13
60
105
GROUT
6" PVC casing set to 105' on 1/4/16
META -QUARTZ -DIORITE, strong, light bluish
gray (10B 7/1), light bluish gray (10B 7/1), light
greenish gray (10GY 7/1), white (GLEY 1 8/N),
Gray (GLEY 1 5/N), bluish black (5PB 2.5/1), and
olive yellow (5Y 6/8), phaneritic, non -foliated,
massive, slightly decomposed, slightly
disintegrated, fracture density is not reported due
to excessive mechanical fracturing by Roto-Sonic
110
RC-1
42
drilling method. Phenocrysts consist of albite and
moonstone plagioclase feldspar, smoky and milky
Recovery on 105-115 core interval
quartz, amphibole, pyroxene, and muscovite,
approximately 18" less than minimum criteria
recovered rock is mostly broken pieces, some
for PW R
surfaces show evidence of partially open fractures
with Fe -staining and epidote and pyrite
`
mineralization.
115
Same, except one open fracture at 115' (60° dip)
and one closed fracture with quartz and pyrite
mineralization at 115.5' (201 dip)
METADIABASE, very strong, dark greenish gray
(5G 4/1), very dark greenish gray (5G 3/1),
greenish gray (5G 5/1 & 6/1),light greenish gray
(5G 7/1), white (N 9.5, N9, 7.5YR 8.5/1), light
bluish gray (513 711), and bluish black (5PB 2.5/1),
aphanitic, massive, slightly decomposed, slightly
disintegrated, fracture density is not reported due
120
RC-2
64
to excessive mechanical fracturing by Roto-Sonic
drilling method. Contains abundant mafic minerals
such as amphibole and pyroxene, abundant large
xenocrysts of metadiorite with thinly to intensely
banded foliation exist in metadiabase. Also,
coarsely recrystalized boudinages of metadiorite
incorporated into metadiabase, three partially open
fractures with pyrite and slight epidote
mineralization at 117' (501 dip), 117.5' (501 dip),
and 118.5' (55° dip).
125

440 S. Church Street, Suite 900
Charlotte, NC2875
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-17D
PAGE 6OF6
PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv. NC
H
w
p
125
W Z
�W
W o
dU
QO
ZJ
Q
m0>
UZ
c
j
O
W
o
p>
OE
W
e
U
0
DESCRIPTION
REMARKS
° W
o�
2
METADIABASE, very strong, dark greenish gray 125-135' competent rock
(5G 4/1), very dark greenish gray (5G 3/1),
greenish gray (5G 5/1 & 6/1), light greenish gray
(5G 7/1), white (N 9.5, N9, 7.5YR 8.5/1), light
bluish gray (513 7/1), and bluish black (5PB 2.5/1),
aphanitic, massive, slightly decomposed, slightly
disintegrated, fracture density is not reported due
to excessive mechanical fracturing by Roto-Sonic
drilling method. Contains abundant mafic minerals
such as amphibole and pyroxene, abundant large
130
xenocrysts of metadiorite with thinly to intensely
RC-3
97
banded foliation exist in metadiabase. Also,
coarsely recrystalized boudinages of metadiorite
incorporated into metadiabase, three partially open
fractures with pyrite and slight epidote
mineralization at 117' (50° dip), 117.5' (501 dip),
and 118.5' (550 dip). (continued)
Same, except numerous partially open fractures
with pyrite, some calcite, and traces epidote
mineralization throughout interval 125-134' at
J135
60-700 dips
ame, except numerous partially open fractures
with pyrite, some calcite, and trace epidote
mineralization throughout interval, 125-134' at
60°-70° dip
TQUARTZ-DIORITE, same as described for
JiE,tetal106-117', one partially open fracture wit
pidote mineralization at 134.2-134.6' (751 dip)
Bottom of borehole at 135.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-17D: Box 1 of 2 Depth: 105.0' - 125.0' Date: 01/06/16
Photo 2 — GWA-17D: Box 2 of 2 Depth: 125.0' - 135.0' Date: 01/06/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER GWA-18S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 1/9/16 COMPLETED 1/9/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
W �
c
o
e
=
} W
H W
U) W
H-
}
Y �
p
z
w�
0
_J D Q
j
p>
DESCRIPTION
REMARKS
° W
Q
dU
,20
m0�
UZ
0
�0
U
o3
U)O
W
W
0
0
Refer to adjacent well GWA-18D for lithology
Hole Size:
6" 0'-71'
5
10
15
20
25

BORING NUMBER GWA-18S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
w
0
0 z Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0�
O
WO
U
o3
QO
UZ
w
W
O
z
(Y
25
Refer to adjacent well GWA-18D for lithology
30
35
40
45
50

BORING NUMBER GWA-18S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
wv
Q
-,� Q
j
p>
DESCRIPTION
REMARKS
° W
p
o U
QO
m0�
Uz
0
W
W0
W
U
0
o3
50
Refer to adjacent well GWA-18D for lithology
55
Boring Terminated at 100'
Screened Interval Set at 87'-92'
60
65
70
Monitoring Well Installed on 1/8/16
Bottom of borehole at 71.0 feet.

BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 1/4/16 COMPLETED 1/8/16 GROUND ELEVATION HOLE SIZE(S) 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
LL j
a
C
8
0
_LLJ
rt
U)
3: H —1
}
>
Y 0�
o
ww
w o
0 zj Q
O w
U0 >
DESCRIPTION
REMARKS
° W
0
aU
m0>
n0
E0
03
g0
UZ
w
w
O
�z
0
(ML) SILT, red (2.5YR 5/8), moist, non -plastic,
Hole Size(s):
non -cohesive (SOIL)
9" 0'-85'
5" 85-100'
5
SD-1
42
10
(ML) SILT, reddish yellow (7.5YR 6/8), moist,
non -plastic, non -cohesive, Mn veins and nodules,
trace mica (SOIL)
15
SD-2
42
(ML) SILT, brownish yellow (10YR 6/6), moist,
20
non -plastic, non -cohesive, some mica, weathered
feldspar, relict foliation (SAPROLITE)
25

a
z
0
0
0
a
0
U
H
O
a
Z
W
J
BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
Lu
z
Wp v
d 0
>
m O a
FD
O
0 O
Y
DESCRIPTION
REMARKS
° W
UZ
w
W
U O
o3
QO
In Z
25
(ML) SILT, brownish yellow (10YR 6/6), moist,
non -plastic, non -cohesive, some mica, weathered
feldspar, relict foliation (SAPROLITE) (continued)
30
(ML) SILT WITH SAND, light yellowish brown
(10YR 6/4), moist, non -plastic, non -cohesive,
micaceous (vermiculite), with fine to coarse sand
sized weather feldspar, some quartz
(SAPROLITE)
35
SD - 4
60
40
45
SD-5
72
(ML) SILT, light brownish gray (2.5Y 6/2), dry,
non -plastic, non -cohesive, trace mica, trace fine
to coarse sand sized weathered feldspar
46'-48' Driller noted hard drilling
(SAPROLITE)
50

a
z
0
0
0
a
U
H
U
O
a
Z
W
J
BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y
CY
0z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In Z
50
(ML) SILT, light brownish gray (2.5Y 6/2), dry,
non -plastic, non -cohesive, trace mica, trace fine
to coarse sand sized weathered feldspar
(SAPROLITE) (continued)
55
SD-6
90
(ML) SILT WITH SAND, yellowish brown (10YR
5/4), dry, non -plastic, non -cohesive, with coarse
sand to gravel sized weather feldspar, quartz,
amphibole mica, occasional aphanitic laminae
(SAPROLITE)
60
(SM) SILTY SAND, brown (10YR 4/3), dry,
non -plastic, non -cohesive (SAPROLITE)
65
SD-7
108
(ML) SILT, light brownish gray (2.5Y 6/2), dry,
non -plastic, non -cohesive, trace mica, trace fine
to coarse sand sized weathered feldspar
(SAPROLITE)
(ML) SILT WITH SAND, pale brown (10YR 6/3),
dry, non -plastic, non -cohesive, with coarse sand
to gravel sized weather feldspar, quartz,
70
amphibole mica, occasional aphanitic laminae,
becomes more granular with increasing depth
(SAPROLITE)
75

BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
Y�
Z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In Z
af
x
75
(ML) SILT, olive gray (5Y 4/2), moist, non -plastic,
non -cohesive, with mica, trace fine gravel sized
rock fragments (SAPROLITE/WEATHERED
ROCK) (continued)
(ML) SILT WITH SAND, pale brown (10YR 6/3),
dry, non -plastic, non -cohesive, with coarse sand
to gravel sized weather feldspar, quartz,
amphibole mica, occasional aphanitic laminae,
becomes more granular with increasing depth
(SAPROLITE/WEATHERED ROCK)
80
SD-9
60
GW-GM) GRAVEL WITH SILT, dark greenish
gray (10Y 4/1), non -plastic, non-cohesivA_coars
85
gravel sized fragments of Metadiabase
(SAPROLITE/WEATHERED ROCK)5'
Borehole reamed to 9"; 6" PVC casing
METADIABASE, very strong, dark gray (N4),
installed and grouted to surface on 1/6/16
aphanitic, non -foliated, massive
85.5' Fracture, 301, no staining
(WEATHERED/FRACTURED ROCK
87'-88.5' Drilling rods dropped, lost circulation
RC-1
60
87'-90' Very intensely fractured and
mechanically broken, Fe and Mn Stained
90
90'-90.7' Two vertical fractures with quartz
mineralization
90.4'-92' Very intensely fractured and
mechanically broken, quartz mineralization on
fractures
92'-93' Drilling rods dropped
92'-94.3' Intensely fractured and mechanically
broken, no staining
95
RC-2
80
94.3'-96' Very intensely fractured and
mechanically broken, quartz mineralization on
fractures
96'-99.5' Very intensely broken, intensely
META -QUARTZ DIORITE, very strong, white (N9)
and black (N2.5), phaneritic, massive
weathered
(WEATHERED/FRACTURED ROCK)
99.6-100' Very intensely broken
METADIABASE, very strong, dark gray (N4),
Boring Terminated at 100'
aphanitic, non -foliated, massive
Screened Interval Set at 87'-92'
100
(WEATHERED/FRACTURED ROCK
Monitoring Well Installed on 1/8/16
Bottom of borehole at 100.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
T�E�rN: ,s l
CSonf��4
Photo 1 - GWA-18D: Sample SC-1 Depth: 5'
17XKF- iEIVERGY7-44F-N STATIC!
86R OUC, Na,: C WAgZD DATE: i� f
ui� Gad; � ire
Lliirw
Commf=�rr5; �DAIC��-x�oi�
1
.�_— ..�.
Date: 01 /04/16
Photo 2 - GWA-18D: Sample SC-1 Depth: 10' Date: 01/04/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
1

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
r ZD)(OJK F-- E AE C Y -ALLE Al ra-,oJRs*►
t21G GCc?: 'D�
camms►ur5; f �nte�4 x�`�
Photo 3 — GWA-18D: Sample SC-2 Depth: 15' Date: 01/04/16
7-)<JYE- ENERGY-A4F-IV STATIew
FORMIC,
2.IG GCd; `D
COMASANTS;-SO AiC& X60`
Photo 4 — GWA-18D: Sample SC-2
Depth: 20' Date: 01 /04/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
2

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
ti
Photo 5 — GWA-18D: Sample SC-3 Depth: 25' Date: 01/04/16
DUKE EA/C Rr-y-AtLt=N STATION
30
�pl4lC�u- X�rJ
Photo 6 — GWA-18D: Sample SC-3 Depth: 30' Date: 01/04/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
3

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
Y
DOKE ENERGY-AIL'F-n: STATION I,
Fop'wG No" GNA.12 !DATE: I/q/t5'
216 GcL�; T) 4c \\
Comm�uTS; Sd'���4 K%rJ
0
Photo 7 — GWA-1811): Sample SC-4
Depth:35' Date:01/04/16
Photo 8 — GWA-1811): Sample SC-4 Depth: 40' Date: 01/04/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 9 — GWA-18D: Sample SC-5 Depth: 45' Date: 01/05/16
Photo 10 — GWA-18D: Sample SC-5 Depth: 50' Date: 01/05/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
F
9
Z)(JJ(E ENERGY-AL.LF-N 5T4-rJCQ
36R(NG NO,. DATE: I/Sj
DEPTN,
z lG GCa ; , I-)
Photo 11 - GWA-1811): Sample SC-6 Depth: 55' Date: 01/05/16
I)(JkF- ENERGy-AU:Etu !,TATION
r 1)EP7P;
Photo 12 - GWA-1811): Sample SC-6 Depth: 60' Date: 01/05/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment �J1�
Appendix A, Sample Photographs
Photo 13 — GWA-18D: Sample SC-7 Depth: 65' Date: 01/05/16
Photo 14 — GWA-1811): Sample SC-7 Depth: 70' Date: 01/05/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs FN
Il:
Photo 15 — GWA-18D: Sample SC-8 Depth: 75' Date: 01/05/16
Photo 16 — GWA-1811): Sample SC-9 Depth: 80' Date: 01/05/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
� �"1•-T - 7� �_

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 17 — GWA-18D: Sample SC-9 Depth: 85' Date: 01/05/16
Photo 18 — GWA-1811): Box 1 of 2 Depth: 85.0'-97.0' Date: 01/7-8/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 19 — GWA-18D: Box 2 of 2 Depth: 97.0'-100.0' Date: 01/08/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
m

BORING NUMBER GWA-19S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 3/24/16 COMPLETED 3/24/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell CHECKED BY 3--' DATE/TIME 3/29/2016 8:45:00 AM 40.10 ft
NOTES 1 DATE/TIME 3/24/2016 8:30:00 AM 46.10 ft
W �
c
o
e
=
}
HW
to W
HD
}
Y�
p
z
wv
Q
Q
>
p>
DESCRIPTION
REMARKS
° W
p
dU
m0�
0
�0
U
o3
QO
Uz
w
w
0
cn z
0
See GWA-19D for lithologic description
5
10
15
20
25

BORING NUMBER GWA-19S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
HD
}
Ye
p
z
w0
0 z Q
j
p>
DESCRIPTION
REMARKS
° W
p
CL
m0�
O
wO
U
o3
QO
UZ
w
W
O
z
(Y
25
30
35
40
45
1
50

BORING NUMBER GWA-19S
440 S. Church Street, Suite 900
Charlotte, NC2802-2075
PAGE
3 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371
PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y�
z
z
a
O
DESCRIPTION
REMARKS
° W
Lu
In
d 0
m O >
O
0
Y
o�
QO
UZ
w
W
U
O
cn Z
50
a
c�
z
w
55
a
J
Q
Z
°
Well Installed 3/24/16- Screen 42.0-57.0'
0
(n
Bottom of borehole at 58.0 feet.
O
a
z
w
J
J
g
w
m
m
0
O
Q
a
i7
z
Y
0
O
3r
a_
U
0
co
0
m
N
N
H
Q1
g
0
z
c�
0
J
Z
O
m
z
Z
J
O
Q
U
2
H
O
z

BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 3/18/16 COMPLETED 3/23/16 GROUND ELEVATION HOLE SIZE(S) 10, 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell CHECKED BY �F DATE/TIME 3/29/2016 8:45:00 AM 43.10 ft
NOTES 1 DATE/TIME ---
LL j
a
C
o
0
_LLJ
rt
U)
3: H -1
}
>
Y 0�
o
ww
w o
zj Q
O w
0>
DESCRIPTION
REMARKS
° W
0
aU
m0>
n0
E0
03
g0
UZ
w
w
O
�ZO
D
0
(CH) CLAY, red (2.5YR 5/6), highly plastic, moist,
cohesive, roots near surface (SOIL)
Truck -mounted sonic 8" core. Cored from
surface.
All recovery longer than cored interval unless
otherwise noted, due to expansion
All contacts approximate
SD-1
84
8': Grading to reddish yellow (5YR 6/6), increasing
silt content
5
Gradational contact 9 to 12'
10
10" temporary casing installed to 10'
SD-2
120
(CL) CLAY, mottled reddish yellow (7.5YR 6/6)
and very pale brown (10YR 7/4), low plasticity,
moist, cohesive, common kaolin and Mn nodules
(SAPROLITE)
15
Grading to Strong Brown (7.5YR 5/8), increasing silt
content
20' - As above except mottled strong brown (7.5YR
Begin drilling with water at 17'
5/8) with yellow (10YR 7/6) mottles, micaceous
20
SD-3
120
25

BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
o
0
_uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U)z0
a
25
Gradational contact 25 to 27'
(ML) SILT, yellowish brown (10YR 5/6), dry,
non -plastic, cohesive, few Mn nodules
(SAPROLITE)
30
33': As above except abundant Mn nodules and
veins, kaolin nodules, moist, trace mica
SD-4
96
Relic structure evident
38-42': highly micaceous
35
40
SD-5
120
45
50

BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wz
o
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U) z0
of
af
of
50
Gradational contact, Composite colors
All contacts approximate
(CL) CLAY, light yellowish brown (10YR 6/4),
moist, low plasticity, cohesive, micaceous
(SAPROLITE).
Decreasing mica content
55
Relic diorite structure
(ML) SILT, light yellowish brown (10YR 6/4),
moist, non -plastic, cohesive, micaceous, little fine
to medium sand, with Mn and kaolin nodules
60
SD-7
120
(SAPROLITE)
63': Decreasing sand content
65
Gradational 67 to 70'
(ML) SANDY SILT, light olive brown (2.5YR 5/4),
moist, non -plastic, cohesive, with fine to medium
sand, trace coarse, micaceous (SAPROLITE)
70
SD-8
120
75

BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
o
0
_uj
rr
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U)z0
af
o
75
(SM) SILTY SAND, light olive brown (2.5Y 5/4),
moist, non -plastic, non -cohesive, fine to coarse
sand, trace fine gravel (SAPROLITE) (continued)
Residual soil, diabase parent
(CL) CLAY, olive (5YR 5/3), medium plasticity,
dry, cohesive, friable
82': As above except low plasticity with kaolin and
Mn nodules, fine to coarse sand, trace mica
80
SD-9
120
(SAPROLITE)
Residual soil, diorite parent
85
Sharp contact, approximate depth
(SM) SILTY SAND, grayish brown (2.5Y 5/2),
moist to wet, non -plastic, non -cohesive, fine to
coarse sand (SAPROLITE)
90
SD -
10
120
Gradational content 90 to 92'
(ML) SILT, olive gray (5YR 4/2), dry, non -plastic,
cohesive, trace fine sand, trace kaolin and Mn
veins (SAPROLITE)
Increasing sand content, fine to coarse
95
SC-11 Sample bag broke, lost —3' of sample
100
SD -

BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
o
0
_uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
aU
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U)ZO
af
D
100
64
METADIABASE, black (5Y 2.5/2), strong,
Slightly decomposed, open 80' fracture, Fe
aphanitic, massive (WEATHERED/FRACTURE
staining, approximate depth
ROCK)
(ML) SILT, dark grayish olive (10YR 4/2), moist,
non -plastic, non -cohesive (SAPROLITE)
Weathered diorite, some original structure
(SM) SILTY SAND, brown (7.5Y 5/4), dry,
105
non -plastic, non -cohesive, fine to coarse,
subrounded to angular (SAPROLITE)
retained
110
SD -
12
48
110.0-110.8': Approximate depth, fresh to
META -QUARTZ DIORITE, strong, black (1\11) and
white (N8), coarse grained, non -foliated
slightly decomposed, onion -skin weathering
(SM) SILTY SAND, brown (7.5Y 5/4), recovered
mostly as coarse sand and gravel, competent
pieces friable, oxidized
(SAPROLITE/WEATHERED ROCK)
Much of SC-12 washed out
115
115-117': Moderately to intensely fractured,
META -QUARTZ DIORITE, very weak to strong,
black (N1) and white (N9), partially recovered as
open, subvertical, Fe staining on fracture
sand and gravel (WEATHERED/FRACTURED
surfaces
ROCK)
-
55
117.8-120': trace xenoliths to 2", non -foliated
13
117.8-120': Unfractured
120
120-125': Fresh, slightly fractured
META -QUARTZ DIORITE, strong, black (N1) and
3/22/16 - 6" PVC casing installed to 120.5',
white (N9.5), secondary light red (2.5YR 6/6),
grouted to surface
coarse grained, non -foliated, trace xenoliths,
RC - 1
91
125-1257- weak to moderate
(WEATHERED/FRACTURED ROCK)
i..
123.3': Fracture, Open, 60°, trace Mn and Fe
staining. May be part of healed fracture at
123.6-124.5': Fracture, healed, quartz -filled,
125
1/8" thick

440 S. Church Street, Suite 900
Charlotte, NC2875
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-19D
PAGE 6OF6
PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv. NC
W Z
c
o
e
H
�W
ZJ
w
W o
dU
Q
j
p>
DESCRIPTION
REMARKS
° W
p
QZ
m0>
U
O
OE0
W
U
0
o�
O
W
125
125.7 Moderate to strong, trace pyrite (SOUND
125.0-125.7': Very intensely to intensely
ROCK)
fractured, trace quartz mineralization on
-
fracture surfaces
125.7-128.0': Intensely fractured,
-
subhorizontal, some quartz on fracture
surfaces (may be mostly mechanical)
-
127.8-135.0': Slightly fractured
127.8-129.8': Healed fracture, vertical with
1/2" quartz band (H=7)
130
RC-1
93
129.5 Pyrite absent
130.5-132.1': Healed fractures, subvertical
hairline, epidote infilling
.:.
125.0-128.0': RQD=O%
128.0-135.0': RQD=98%
Well installed 3/23/16 - screened interval
135
125.2-130.2' bgs
Bottom of borehole at 135.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-19D: Sample SC-1 Depth: 5.0' Date: 03/18/16
D 1-2MJCRG,�(
Photo 2 — GWA-19D: Sample SC-2 Depth: 10.0' Date: 03/18/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
-4
Photo 3 — GWA-19D: Sample SC-2 Depth: 15.0' Date: 03/18/16
I
Photo 4 — GWA-19D: Sample SC-3 Depth: 20.0' Date: 03/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
P
Photo 5 — GWA-19D: Sample SC-3
Depth:25.0' Date:03/19/16
Photo 6 — GWA-19D: Sample SC-4 Depth: 30.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
1
Photo 7 — GWA-19D: Sample SC-4 Depth: 35.0' Date: 03/21/16
Photo 8 — GWA-19D: Sample SC-5 Depth: 40.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 9 — GWA-19D: Sample SC-5 Depth: 45.0' Date: 03/21/16
Photo 10 — GWA-19D: Sample SC-6 Depth: 50.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — GWA-19D: Sample SC-6 Depth: 55.0' Date: 03/21/16
Photo 12 — GWA-19D: Sample SC-7 Depth: 60.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 13 — GWA-19D: Sample SC-7 Depth: 65.0' Date: 03/21/16
D Lww — WMGIe
AL EW `frWrs C>�-i
ftwI *1 C- -* G-v-IA- 19 D
DATE: Wz(/rt
DEP'r H -Io FT r
CC)g14C• ME'�H��.
Pum � -_ ►
Photo 14 — GWA-19D: Sample SC-8 Depth: 70.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
WEL
Photo 15 — GWA-19D: Sample SC-8 Depth: 75.0' Date: 03/21/16
Photo 16 — GWA-19D: Sample SC-9 Depth: 80.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Y
A�j.,
—A L- E 1 ,5,r, -Fj ©q
I RrrJ� OVA— IID
{
OepTH SS FT
CC O)JJC- me-T I4 O: SOWIC. Qy
Photo 17 — GWA-19D: Sample SC-9 Depth: 85.0'
Date: 03/21 /16
VW
Photo 18 — GWA-19D: Sample SC-10 Depth: 90.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 19 — GWA-19D: Sample SC-10 Depth: 95.0' Date: 03/21/16
Photo 20 — GWA-19D: Sample SC-11 Depth: 100.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 21 — GWA-19D: Sample SC-11 Depth: 105.0' Date: 03/21/16
Photo 22 — GWA-19D: Sample SC-11 Depth: 105.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 23 — GWA-19D: Sample SC-12 Depth: 110.0' Date: 03/21/16
Photo 24 — GWA-1911): Sample SC-12 Depth: 115.0' Date: 03/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 25 — GWA-19D: Sample SC-13 Depth: 115.0'-120.0' Date: 03/21/16
' L»K,G CUEi�j1(�
ACo�row�p,- fSr
p_oRi+�G
IBC- I (lZD.S- 125.p)
-
cwEeY Pop 84�
•.
Photo 26 — GWA-19D: Box 1 of 2 Depth: 120.5'-130.5' Date: 03/23/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
v'r
/�. T.E'�KC^/ RC: 2 (Lour) f2SG-135p ,
- hilElJ >;rparnw. ,n 2r q3'/ 124.�: s4/.
' rtarasks- Mr��Neur S?C-Z_
FarevrSG G-Wa.-}9P — ar
b3r�r~� ,,,
as
F
Me
Photo 27 — GWA-19D: Box 2 of 2 Depth: 130.5'-135.0' Date: 03/23/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER GWA-21 S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 2/8/16 COMPLETED 2/9/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell CHECKED BY �F DATE/TIME 2/9/2016 9:10:00 AM 27.60 ft
NOTES 1 DATE/TIME ---
H w
(n W
p
z
w v
w o
J
0 z Q
j
p>
DESCRIPTION
REMARKS
° W
p
aU
m0>
0
W0
U
o3
Uz
W
W
O
QO
cn z
0
Refer to adjacent well GWA-21 D for lithology
5
10
15
20
25

BORING NUMBER GWA-21 S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075
PAGE
2 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371
PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w-j�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
UZ
O
WU
U
o3
�O
W
LU
0
25
30
Boring terminated at 40', screened interval set
35
at 232-38.2', monitoring well installed 2/9/16
40
Bottom of borehole at 40.0 feet.

BORING NUMBER GWA-21 D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 1/28/16 COMPLETED 2/16/16 GROUND ELEVATION HOLE SIZE(S) 10, 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell, D. Campbell CHECKED BY DATE/TIME 2/18/2016 2:05:00 PM 33.55 ft
NOTES 1 DATE/TIME ---
LL j
a
C
o
0
_Lu
rt
U)
3: H -1
}
>
Y 0�
o
ww
w o
0 zj Q
O w
00 >
DESCRIPTION
REMARKS
° W
0
a0
m0>
n0
E0
03
g
<00
UZ
w
w
0
O
2
ui
Lu
0
CL) CLAY, dark reddish brown (5YR 3/4), moist,
Hole Size(s):
low plasticity, cohesive (SOIL)
10" 0' 10'
9" 10'-170'
(CL) CLAY, red (2.5YR 4/6), moist, medium
plasticity, cohesive, trace fine sand, muscovite,
5" 170'-183'
kaolin, and roots (SAPROLITE)
4' Few relict structures evident
5
SD-1
96
5' Relict diorite structure evident
(ML) SILT, red (2.5YR 4/6), moist, non -plastic,
cohesive, abundant kaolin and muscovite, trace
thin Mn veins (SAPROLITE)
7' Mn nodules and thin veins appear
10
(ML) SILT WITH SAND, light brown (7.5YR 6/4)
grading to very pale brown (10YR 7/3), dry,
non -plastic, cohesive, sand fine to medium,
angular to subangular, micaceous (SAPROLITE)
15
SD-2
120
20
Continued: Moist
20' Mn veins up to 0.5" thick, common Fe
staining
(ML) SILT, pale brown (10YR 6/3), moist,
non -plastic, cohesive, trace fine to coarse sand
(SAPROLITE)
25

BORING NUMBER GWA-21 D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
o
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U) ZO
af
of
25
(ML) SILT, pale brown (10YR 6/3), moist,
non -plastic, cohesive, trace fine to coarse sand
(SAPROLITE) (continued)
30
35
SD-4
120
(ML) SILT, light yellowish brown (2.5Y 6/3), moist
to wet, non -plastic, cohesive, phaneritic texture,
trace fine to medium quartz sand, common
40
muscovite, trace pyrite (SAPROLITE)
43' Decreasing Mn content, decreasing Fe
staining
45
SD-5
120
50

zz
0
0
0
a
U
H
O
a
z
W
J
BORING NUMBER GWA-21 D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
Wv
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
p
QO
UZ
w
W
U
O
03
l4 Z
of
of
W
50
(ML) SILT, light olive brown (2.5Y 5/4) and
reddish yellow (7.5YR 6/6), moist to wet,
non -plastic, cohesive, abundant kaolin and Mn
51' Fe stained throughout, Mn veins on relict
nodules (SAPROLITE)
fractures
55
SD-6
120
60
63' Few Fe and Mn mottles, Mn veins absent
Continued: Trace pyrite
65
SD-7
120
70
70' Few Fe and Mn mottles, common indistinct
(CL) CLAY, light yellowish brown (2.5Y 6/4),
moist, low to medium plasticity, cohesive
Fe staining
(SAPROLITE)
75

a
z
0
0
0
a
U
H
0
a
Z
W
J
BORING NUMBER GWA-21 D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
Lu
z
Wp v
d 0
>
m O a
FD O
0 O
Y
DESCRIPTION
REMARKS
° W
UZ
w
W
U O
o3
QO
l4 Z
75
76' Trace thin Mn veins on relict fractures, no
(CL) CLAY, light yellowish brown (2.5Y 6/3), dry,
medium plasticity, cohesive (SAPROLITE)
other relict structures evident
78' Fe stained, trace Mn
(CH) CLAY, light yellowish brown (2.5Y 6/3), dry,
medium to high plasticity, cohesive (SAPROLITE)
80
(CL) CLAY, pale brown (10YR 6/3), moist, low
plasticity, cohesive, trace fine to medium sand,
few kaolin and Mn veins (SAPROLITE)
81' Subdued Fe staining, relict diorite structure
evident
Continued: Low to medium plasticity
85
SD-9
120
85' Driller noted very hard drilling
86' Increasing Mn nodules, relict structure not
evident
90
90' Common Mn nodules and veins, trace Fe
(ML) SILT WITH SAND, light olive brown (2.5Y
5/4) to yellowish brown (10YR 5/4), dry, fine to
staining on thin relict fractures
medium sand, subangular, with few zones of sand
(SAPROLITE)
95
SD -
10
120
96' Common Mn veins and dendrites
(CL) CLAY, very pale brown (10YR 8/2), dry, low
to medium plasticity, cohesive, friable, with few
cemented nodules (SAPROLITE)
98.5-100' Driller noted easier drilling
100

BORING NUMBER GWA-21 D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
o3
:�
UZ
w
w
O
0
U) Z
af
of
100
(CL) CLAY, very pale brown (10YR 8/2), dry, low
to medium plasticity, cohesive, friable, with few
cemented nodules (SAPROLITE) (continued)
(ML) SANDY SILT, very pale brown (10YR 8/2) to
light brownish gray (10YR 6/2), moist, non -plastic,
non -cohesive, with trace angular aplite fragments
up to 3" in diameter (SAPROLITE)
104' Possible brecciated shear zone
105
SD -
11
120
(ML) SILT, yellowish brown (10YR 5/4), moist,
low plasticity, cohesive (SAPROLITE)
(ML) SANDY SILT, light yellowish brown (2.5Y
6/3), moist, low plasticity, cohesive, fine to coarse
sand, increasing clay content with depth
(SAPROLITE)
(ML) SANDY SILT, white (2.5Y 8/1) to olive
brown (2.5Y 4/3), dry, non -plastic, non -cohesive,
110
fine to medium sand (SAPROLITE)
SD-
60
12
Continued: Dry to moist, trace muscovite, friable,
increasing amphibole, quartz, and plagioclase
115
115' Relict diorite structure evident
Continued: With metadiabase fragments and
sparse angular quartz fragments
SD-
60
13
118' Highly decomposed diorite
120
(ML) SANDY SILT, white (2.5Y 8/1) to olive
brown (2.5Y 4/3), dry, non -plastic, non -cohesive,
fine to medium sand (SAPROLITE)
122' Possible brecciated shear zone
Continued: Grayish brown (10YR 5/2)
125
SD -

a
z
0
0
0
a
U
H
0
a
Z
W
J
BORING NUMBER GWA-21 D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 6 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
Y�
Z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In Z
af
X
125
126' Phaneritic texture, residuum from
(SW-SM) SAND WITH SILT, white (7.5YR 8/1)
and brown (7.5YR 5/2), dry, non -plastic,
weathered diorite
non -cohesive, with fine to coarse amphibole,
quartz, and plagioclase (SAPROLITE)
130
Continued: Trace clay nodules
133' Driller noted hard drilling
(ML) SANDY SILT, brown (7.5YR 5/4), dry,
non -plastic, non -cohesive, alternating 2'-4'
aphanitic and phaneritic zones with higher clay
135
SD -
15
120
content and low plasticity (SAPROLITE)
Continued: Increasing clay content
140
142' Gradational contact
(CL) CLAY, light olive brown (2.5Y 5/3), moist,
medium plasticity, cohesive, few zones of high
plasticity clay in 0.5" layers (SAPROLITE)
145
SD -
16
60
Continued: Interspersed 0.5" thick layers of
145' Cemented zones can be broken with
cemented (ML) SILT, dark olive brown (2.5Y 3/3)
hammer, some by hand with difficulty
150

a
z
0
0
0
a
U
H
0
a
z
W
J
BORING NUMBER GWA-21 D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 7 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
CYz
Wp v
d 0
>
m O a
O
O
Y
DESCRIPTION
REMARKS
° W
UZ
w
W
U
O
o3
QO
(n Z
0'
150
151' Driller noted very hard drilling
(ML) SILT WITH SAND, very dark grayish brown
(2.5Y 3/2), dry to moist, non -plastic,
non -cohesive, few low plasticity silt zones, trace
sand, trace small to large gravel, few light
brownish gray (2.5Y 6/3) clay nodules with
medium plasticity (SAPROLITE)
155
SD-
17
120
(ML) SILT WITH SAND, very dark gray (2.5Y
3/1), dry, non -plastic, cohesive, friable, few
cemented nodules (SAPROLITE)
160
160' Trace Fe staining
Continued: With gravel to cobble sized diabase
SD -
fragments up to 6" in diameter, trace clay nodules
18
96
165
168'-170' Driller noted hard, then soft, then
METADIORITE, strong to very strong, white
(7.5YR 8/1) and black (10YR 2/1), phaneritic,
hard drilling
RC-1
100
non -foliated (SOUND ROCK)
168.8' Fracture, 401, trace Mn staining
CL) CLAY, dark greenish gray (10GY 4/1), low
plasticity, cohesive, some fine to coarse sand
170
170' Borehole reamed to 9'; 6" PVC casing
(SAPROLITE)
installed to 168' and grouted to surface on
METADIORITE, very strong, white (7.5YR 8/1)
RC-2
100
2/13/16
and black (10YR 2/1), phaneritic, non -foliated
(SOUND ROCK)
171.7' Fracture, 400, epidote mineralization
175

440 S. Church Street, Suite 900
F)I Charlotte, NC 2875
Phone:[phone]
6700
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-21 D
PAGE 8OF8
PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv. NC
W Z
c
o
e
H
�W
ZJ
w
W o
dU
Q
j
p>
DESCRIPTION
REMARKS
° W
p
m0>
UZ
O
OE
W
U
o�
QO
W
0
175
93
METADIORITE, very strong, white (7.5YR 8/1)
and black (10YR 2/1), phaneritic, non -foliated
-
(SOUND ROCK) (continued)
175.8' Fracture, 400, trace Mn staining
176' Fracture, 300, diabase infilling
177.7' Fracture, 300, no staining I If:
179.7' Fracture, 400, chlorite mineralization, Fe
180 and Mn staining
180'-180.4' Fracture, 700, chlorite
RC - 4 100 mineralization, Fe and Mn staining
181.3' Fracture, 400, diabase infilling
Boring Terminated at 183'
Screened Interval Set at 177.5'-182.5'
Monitoring Well Installed on 2/16/16 ;..
Bottom of borehole at 183.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
Photo 1 — GWA-21D: Sample SC-1 Depth: 5' Date: 01/28/16
Photo 2 — GWA-21 D: Sample SC-2 Depth: 10' Date: 01 /28/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
` V �.
/ALL E+7 eiT4T rO!
G* C-\r lA- Z 10
' VA'TE Gt'2%2/IKO
C'a to c- MEYHCv : '51CIa l c T
jolt
�r
+r e
Photo 3 — GWA-21 D: Sample SC-2 Depth: 15' Date: 01 /28/16
Photo 4 — GWA-21 D: Sample SC-3 Depth: 20' Date: 01/28/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
9

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
'Illy
D uKz i 1E 4ZG f
ALLZjj �iTATSE�I.{
DATE'- U (I-Vv.
Cc�Rl�tc MErHOO: eolc>a'C
-fHc
Photo 5 — GWA-21 D: Sample SC-3 Depth: 25' Date: 01 /28/16
D �l�ia`i
G-WA-2rD
flarE : a� Iz��'ic�
,OjPT
R - 30
CCAJOC MC-TH;D' cac7�1►G �"
Photo 6 — GWA-21 D: Sample SC-4 Depth: 30' Date: 01/28/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 7 — GWA-21 D: Sample SC-4 Depth: 35' Date: 01 /29/16
Photo 8 — GWA-21 D: Sample SC-5 Depth: 40' Date: 01 /29/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
r
D ,-*C QXVE G'!
ALLir" yrAT iol.!
scsei�j& I©
bA.re., Oti2gr16
DEPTR • 45 F-r
Photo 9 - GWA-21 D: Sample SC-5 Depth: 45' Date: 01 /29/16
E �1' 4i
� uKE
Q.tEf�Gf.
lid. LXIJ
4erAT I6J
$cWt0G- C\tJA-?ID
ODATE :
n / 2q/I 6
DEPTH.
5v F'r
Coglor- Mrrpno'
Photo 10 - GWA-21 D: Sample SC-6 Depth: 50' Date: 01 /29/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
5

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 11 — GWA-21D: Sample SC-6 Depth: 55' Date: 01/29/16
Photo 12 — GWA-21 D: Sample SC-7 Depth: 60' Date: 01 /29/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Fj
.-7
ALLztj `rrATtc4j
URI;JG ik GWA_ Z i C).
DA"E : 01/z4/16
DEPTH. (o5 �- I
GDI?lQC ME'THW.
74C
Photo 13 - GWA-21 D: Sample SC-7 Depth: 65' Date: 01 /29/16
(�LLEI.l y'n4T tt�.[
URi0G -W GWA,-ZIO.
QATE :
DEPTH, -k� FT-
CoRtOc- McTr r : S:o►J ic. � F`
-Mc
Photo 14 - GWA-21 D: Sample SC-7 Depth: 70' Date: 01 /29/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
7

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 15 — GWA-21 D: Sample SC-8 Depth: 75' Date: 01 /29/16
Photo 16 — GWA-21 D: Sample SC-8 Depth: 80' Date: 01 /29/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
Photo 17 - GWA-21 D: Sample SC-9 Depth: 85' Date: 01/30/16
1)4,M q.iEKG�!
�,wI1jc- * C-\.1A-ZICC
QATG: fA/sOe%&
H . g o Fr
cog ni c- M E-THejO l -. � , �
(G'l� VP)
Photo 18 - GWA-21 D: Sample SC-9 Depth: 90'
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
Date: 01 /30/16

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
D U*2--
F 1ERGY
lS L4XI l
`5TAT 1671.E
U;1ei&IG * GWA-ZlD
DATE:
DI l -Ao'1&
rjFVT14.
95 FF
CoR lO c
-rHc
Photo 19 — GWA-21 D: Sample SC-10 Depth: 95' Date: 01/30/16
r 3 r;
Photo 20 — GWA-21D: Sample SC-10 Depth: 100' Date: 01/30/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
AU-Z'N i11 #A-C tE>kt
10 G- -w- GWA- Z I G
VATG : 01/ApA&
Dep-r o . 105 F-r
Photo 21 — GWA-21D: Sample SC-11 Depth: 105' Date: 01/30/16
i
Photo 22 — GWA-21D: Sample SC-11 Depth: 110' Date: 01/30/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
i
rr-
Al-l..ZIJ -7 rAT iC4.1.
G -W GWA- Z l D
DATE:
vepTra • 17
-Mc /
Photo 23 - GWA-21 D: Sample SC-13 Depth: 117' Date: 02/01 /16
Photo 24 - GWA-21 D: Sample SC-13 Depth: 120' Date: 02/01 /16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
iM

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
Q>o t tiS C- -W GWA- l O
17,ar� �. tiZ/ot /rU,
DEPTO , ;ZG
Co R i,J C M E`rHOO ! a t G
core.)
. "C
Photo 25 — GWA-21 D: Sample SC-14 Depth: 125' Date: 02/01/16
Photo 26 — GWA-21 D: Sample SC-14 Depth: 130' Date: 02/01/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
ALl ZIJ '5�A-r tCAJ
10 G- -*GWA I l ©
PATE : 07%'c rZ/'I( ,
DEPTH • V36 F F
CmQl�jc METHoot c3�JfG "
" ri4c
3
A
Photo 27 - GWA-21 D: Sample SC-15 Depth: 135' Date: 02/02/16
F. Dcne
wcg(;,!
$c>r< 10 G -*- GWA 7 l D
VATE :
02fCrz1
DEPTH •
14o F -
Photo 28 - GWA-21 D: Sample SC-15 Depth: 140' Date: 02/02/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
14

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
�
Fs
tee-
�•1�"RG�f •.
FS cttiIG- ik GWA- L[u?
VA -re -
071cz 'j(, `
�EPirN .
I'4-S F�
C40Rj4C
MVT+4�D: '� C�IJit
.:� "DWG f
Photo 29 — GWA-21 D: Sample SC-16 Depth: 145' Date: 02/02/16
Photo 30 — GWA-21 D: Sample SC-16 Depth: 150' Date: 02/02/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
15

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
•
rtG -W GWA 71D
oepTo • 155 FT -
Photo 31 — GWA-21 D: Sample SC-17 Depth: 155' Date: 02/02/16
l
Photo 32 — GWA-21 D: Sample SC-17 Depth: 160' Date: 02/03/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
D LAfIr E1JC-RG,(
A!-i ziul `fAT IC>"
$G)CEiILJG *- GWA-ZIr)
DATE: 02/03/1(0
DEPTO. 1&4 Fr
CoRmic- MCA:
�G
Photo 33 - GWA-21 D: Sample SC-18 Depth: 164'
Pop or-r- WEMG,(
AL,Eg -5rAT tc>.J
ew"a i &j C' -* GWA Z 1 C7
VATS: 02/03l1(0
oEPTM a UPS Fr
cpewc ME-THOO'
Photo 34 - GWA-21 D: Sample SC-18 Depth: 165'
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
Date: 02/03/16
Date: 02/03/16

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Nvet0G -OL- GWA I
VA -re - 02/03l 1(D
DEPTH • I (�-r
. e--C> W t C. 11
.Cc Q I#J C- ME`rN� '
f
Photo 35 — GWA-21 D: Sample SC-18 Depth: 168' Date: 02/03/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
18

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-21 D: Box 1 of 2 Depth: 168.0'-178.0' Date: 02/12-16/16
Photo 2 — GWA-21 D: Box 2 of 2 Depth: 178.0'-183.0' Date: 02/12-16/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
m

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 5/23/16 COMPLETED 6/6/16 GROUND ELEVATION HOLE SIZE(S) 9, 6, 4 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY J. Haramut CHECKED BY DATE/TIME 6/6/2016 8:14:00 AM 33.50 ft
NOTES 1 DATE/TIME ---
w�
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w �
0 zj Q
O j
00 >
DESCRIPTION
REMARKS
° W
a0
m0>
n0
E0
03
g�
UZ
w
w
O
�z
0
Refer to adjacent well GWA-21 D for lithology
0'-187'
5
10
15
20
25

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
Hp
}
Y�
p
z
w-j�
Q
jO
p>Lu
DESCRIPTION
REMARKS
° W
p
0 U
m0>
wU
U
o3
UZ
w
LU
< O
0
25
30
Y
35
40
45
50

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w-j�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
O
wU
U
o3
UZ
w
LU
�O
0
50
55
60
65
70
75

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
Hp
}
Ye
p
z
wv
Lu
-j� Q
j
p>
DESCRIPTION
REMARKS
° W
p
CL
m0>
O
wO
U
o3
QO
UZ
w
w
O
z
75
80
85
90
95
100

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
Hp
}
Ye
p
z
w-j�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
CL
m0>
O
0�O
U
o�
QO
UZ
w
w
O
z
(Y
100
105
110
115
120
125

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 6 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
H
}
HW
to W
�ZJ
Y�
p
C)
z
z�
w
W
-j❑ Q
j
p>
DESCRIPTION
REMARKS
° W
❑
CL
m0>
O
wU
U
o�
2�
UZ
w
LU
< O
0
125
130
135
140
145
150

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 7 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
Hp
}
Ye
p
z
w-j�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
CL
m0>
O
0�O
U
o�
QO
UZ
w
w
O
z
(Y
150
155
160
165
170
175

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 8 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w�
p�
_j � Q
>
0 >
DESCRIPTION
REMARKS
° W
p
dU
�b
m0>
UZ
0
W0
U
o3
O
�
W
�
0
175
180
187.4' 6" PVC casing installed
185
META -QUARTZ DIORITE, very strong, white
(8N), massive, slightly weathered, porphyritic
187'-197' Moderately fractured
granular texture (SOUND ROCK)
190
RC-1
94
195
197'-207' Moderately fractured
200

BORING NUMBER GWA-21 BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 9 OF 10
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
o
0
_Uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U)z0
a
200
META -QUARTZ DIORITE, very strong, white
(8N), massive, slightly weathered, porphyritic
granular texture (SOUND ROCK) (continued)
RC-2
100
Continued: gray (5N)
205
07'-208.3' Intensely fractured
Continued: fresh
208.3'-217 Slightly fractured
210
RC-3
100
'
:,•..:,
215
Continued: dark gray (4N)
217'-227' Slightly fractured
217'-237' Borehole collapse
219'-219.7' Meta-diabase dike
220
RC-4
100
225

440 S. Church Street, Suite 900
Charlotte, NC2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-21 BR
PAGE 10 OF 10
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv, NC
W j
c
o
0
_
rW
�H�
Y�
�
c�
z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
UZ
W
U
03
QO
W
O
225
META -QUARTZ DIORITE, very strong, white
(8N), massive, slightly weathered, porphyritic
granular texture (SOUND ROCK)
230
RC-5
90
235
Bottom of borehole at 237.0 feet.
-237' Slightly fractured
Boring Terminated at 237'
Screened Interval Set at 202'-207'
Monitoring Well Installed on 6/6/16

BORING NUMBER GWA-22S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 1/19/16 COMPLETED 1/20/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
�w
cnw
r
p
z
w v
w o
J
0 Z Q
j
p>
DESCRIPTION
REMARKS
° W
p
aU
m0>
Uz
0
W0
W
U
o3
QO
cn Z
w
Cf
O
0
Refer to adjacent well GWA-22D for lithology
Hole Size:
6" 0'-45'
5
10
15
20
25

BORING NUMBER GWA-22S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w-J�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
UZ
O
WU
U
o3
�O
W
W
0
25
Refer to adjacent well GWA-22D for lithology
30
35
40
Boring Terminated at 45'
Screened Interval Set at 22.1'-37.1'
45
Monitoring Well Installed on 1/20/16
Bottom of borehole at 45.0 feet.

BORING NUMBER GWA-22D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 1/12/16 COMPLETED 1/19/16 GROUND ELEVATION HOLE SIZE(S) 10, 5.5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY T. Campbell CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
w�
a�
C
o
0
_
W
J>'
Y
O
c�
KJ
W v
w
]ice
0 zj Q
O Lu
p>
DESCRIPTION
REMARKS
° W
—10
m0>
n0
E0
03
g�
UZ
w
w
O
�Z
0
JCL) CLAY WITH SAND, dark brown (7.5YR 3/2),
Hole Size(s):
moist, low plasticity, cohesive, fine sand
10,10'-111,
(TOPSOIL)
5.5" 111'-186'
(ML) SILT, red (2.5YR 4/6), moist, non -plastic,
cohesive, little fine sand, trace mica (SOIL)
SD-1
84
5
10
SD-2
120
(ML) SILT, mottled light brown (7.5YR 6/4) and
8'-14' Gradational contact
light red (2.5YR 6/6), moist, non -plastic, cohesive,
trace fine to coarse sand, with Mn veins
(SAPROLITE)
15
Continued: Increasing pale brown (2.5Y 7/4) kaolin
17' Increasing Mn content
content
Continued: Sand becoming coarse, subangular,
20
occurring in thin bands
21 ' Driller noted potential perched water zone
SD-3
120
25

BORING NUMBER GWA-22D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
8
0
_uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U)z0
a
25
(ML) SILT, mottled light brown (7.5YR 6/4) and
25' Decreasing Mn veins
light red (2.5YR 6/6), moist, non -plastic, cohesive,
trace fine sand (SAPROLITE)
Continued: Light yellowish brown (2.5Y 6/3), low
30
plasticity, trace fine sand, abundant kaolin
30' Highly weathered metadiorite
30'-35' Borehole collapsed, began adding
water to keep hole open
SD-4
120
35
Continued: Few mottles of yellowish red (5YR 5/6),
highly micaceous
40
SD-5
120
Continued: Non -plastic, increasing sand content
45
50

BORING NUMBER GWA-22D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wz
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U) z0
af
of
50
(ML) SILT, Light yellowish brown (2.5Y 6/3),
50' Increasing Mn content
moist, non -plastic, cohesive, fine subrounded to
subangular sand (SAPROLITE)
SD-6
120
Continued: Increasing sand content
55
59' Composite color
(ML) SANDY SILT, light reddish brown (5YR 6/3),
60
moist, non -plastic, cohesive, sand fine to medium,
subrounded to subangular, abundant kaolin, trace
pyrite and mica (SAPROLITE)
61' Highly weathered metadiorite, relict
structure evident
SD-7
120
65
70
SD-8
120
75

BORING NUMBER GWA-22D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wz
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U) z0
af
of
75
(ML) SANDY SILT, light reddish brown (5YR 6/3),
moist, non -plastic, cohesive, sand fine to medium,
subrounded to subangular, abundant kaolin, trace
pyrite and mica (SAPROLITE) (continued)
Continued: Decreasing moisture content, becoming
80
SD-9
120
friable
85
91' Sharp contact
90
(ML) SILT, grayish brown (2.5Y 5/2), dry, friable,
SD -
non -plastic, cohesive, trace fine sand
10
120
(SAPROLITE)
92' Driller noted hard drilling
93' Sharp contact, relict metadiorite structure
(ML) SILT WITH SAND, brown (7.5YR 4/2), dry,
friable, non -plastic, cohesive, fine to coarse sand,
evident, common Mn
subrounded, sparse kaolin (SAPROLITE)
95
(ML) SILT, grayish brown (2.5Y 5/2), dry, friable,
non -plastic, cohesive, trace fine sand
(SAPROLITE)
100

BORING NUMBER GWA-22D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
o
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
o3
:�
UZ
w
w
O
0
U) Z
cr
af
of
100
(ML) SILT, grayish brown (2.5Y 5/2), dry, friable,
SD-
non -plastic, cohesive, trace fine sand
11
96
(SAPROLITE) (continued)
101'-105' Sample not recovered on first run,
recovered on second attempt but disturbed
parent material not determined
105
(ML) SILT, grayish brown (2.5Y 5/2), non -plastic,
cohesive, trace fine sand, with few zones of
SD-
weathered diabase 0.5"-1" thick (SAPROLITE)
12
36
SS - 1
50/0
0
(SW) SAND, white (5YR 8/1), non -plastic,
non -cohesive, fine to coarse, subrounded to
subangular (SAPROLITE)
110
SD 13
18
ETADIORITE, weak, light brown (7.5YR),
phaneritic, pitted, fractured
(SAPROLITE/WEATHERED ROCK)
(ML) SANDY SILT, grayish brown (10YR 5/2),
RC - 1
53
non -plastic, cohesive, abundant Mn, kaolin, and
113.3' 6" PVC casing installed to 113.3' and
mica, trace pyrite (SAPROLITE)
grouted to surface on 1/13/16; Began 4"x6"
sonic coring at 111.5'
115
116' RC-2 not recovered on first attempt,
(CL) CLAY, brown (7.5YR 4/2), low to moderate
plasticity, cohesive (SAPROLITE)
recovered on second attempt
120
RC-2
36
125

BORING NUMBER GWA-22D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 6 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
o
0
_uj
rr
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U) Z
a
125
(CL) CLAY, brown (7.5YR 4/2), low to moderate
plasticity, cohesive (SAPROLITE) (continued)
126' RC-3 not recovered on first attempt,
recovered on second attempt
130
130' Abundant loose sand in top of RC-2 and
RC-3, source depth is questionable
RC-3
15
135
(ML) SANDY SILT, grayish brown (10YR 5/2),
non -plastic, cohesive, few in -situ very weak to
weak metadiorite fragments (SAPROLITE)
136' Composite color
136'-145' Driller noted alternating zones of
hard and soft drilling
140
RC-4
13
145
Continued: Metadiorite fragments becoming
common, very weak to moderate, very dark gray
(2.5Y 3/1) and white (2.5Y 8/1)
Very intensely to intensely fractured,
unconsolidated zones likely washed out
150

BORING NUMBER GWA-22D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 7 OF 8
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
H w
(n W
p
z
w v
w o
J
_j� Q
j
0>
DESCRIPTION
REMARKS
° W
p
d0
QO
m0>
Uz
o
W
Wo
W
0
03
150
(CL) CLAY, olive gray (5Y 5/2), medium plasticity,
150' Fractures predominantly sub -horizontal,
metadiorite fragments common (SAPROLITE)
broken into disk shaped fragments, likely
RC-5
31
mechanical breaks
155
i
160
RC-6
27
165
Continued: Metadiorite fragments becoming more
common
(CL) CLAY, grayish brown (10YR 5/2), moist,
medium plasticity, cohesive, trace fine sand
(SAPROLITE)
170
RC-7
50
171' Mottled Fe staining
175

440 S. Church Street, Suite 900
F)ICharlotte, NC 2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-22D
PAGE 8OF8
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv, NC
W j
c
o
0
W
Wp v
d 0
>
m O a
O
O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
w
W
U
O
o3
175
METADIABASE, strong, very dark gray (10YR
75'-176' Core is dry and dusty
3/1), aphanitic (WEATHERED/FRACTURED
-
ROCK)
180
180' Intensely to very intensely fractured,
METADIORITE, strong, black (N2.5) and white
(N9), fresh, phaneritic, trace xenoliths up to 2" in
abundant Mn and Fe staining on fractured
-
RC-8
86
diameter (SOUND ROCK)
surfaces
180'-186' Borehole collapsed after installation
-
of well screen
E1.1.7
Bottom of borehole at 186.0 feet.
Boring Terminated at 186'
Screened Interval Set at 1772-182.2'
Monitoring Well Installed on 1/19/16

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-22D: Sample SC-1 Depth: 5.0' Date: 01/12/16
Photo 2 — GWA-22D: Sample SC-2 Depth: 10.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
Photo 3 — GWA-22D: Sample SC-2 Depth: 15' Date: 01/12/16
Photo 4 — GWA-22D: Sample SC-3 Depth: 20.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 5 — GWA-22D: Sample SC-3 Depth: 25.0' Date: 01/12/16
D uKG EI. MQ(
-4
Photo 6 — GWA-22D: Sample SC-4 Depth: 30.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
3

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
— .— " itor_'.i
Photo 7 — GWA-2211): Sample SC-4 Depth: 35' Date: 01/12/16
ALLE$J '' 'AT IC*l
"toG* C—WAR-7-Zo
VAS : 01 /`z/ i c6
DEPTH: 4 o rT
CQt2WC McYHCO: Sc�tiIIG ,�
Photo 8 — GWA-2211): Sample SC-5 Depth: 40.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
Photo 9 — GWA-2211): Sample SC-5 Depth: 45.0' Date: 01/12/16
5D avr WMQG
Al 17'OJ 5�AT tali
U> ,el tjG * 'GWA- Z7L?
DATE: 01/1z/1b
Photo 10 — GWA-2211): Sample SC-6 Depth: 50.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
5

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
Photo 11 — GWA-22D: Sample SC-6 Depth: 55.0' Date: 01/12/16
Photo 12 — GWA-22D: Sample SC-7 Depth: 60.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
ALLE" `i'tpT cQl.i
UA? 10 Cr GWA- 7ZD
vATG: OVIZ/14'
Dora: US r-F
Coewc METHCO I So?J "-
Photo 13 — GWA-2211): Sample SC-7 Depth: 65.0' Date: 01/12/16
Photo 14 — GWA-2211): Sample SC-8 Depth: 70.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
7

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
F),—WZ FWERG^(
+IG GWA- ZZD
DEPTH : "i 5 Frt
Cog IQC VrHco •
Photo 15 — GWA-2211): Sample SC-8 Depth: 75.0' Date: 01 /12/16
U
ALLZjj �iTi4T �ol.l
tic, -w GWA- ZZD
DEPTH.- 'gD F�
mETFk�P'
Photo 16 — GWA-2211): Sample SC-9 Depth: 80.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
f�,l„ tilt �i-r¢,Tlol.i
¢�vQl0CG C JA- ZZD
DEPrN : 4g5 Fr
Co e w c M ETHCO !
Photo 17 — GWA-2211): Sample SC-9 Depth: 85.0' Date: 01 /12/16
� V .
Photo 18 — GWA-2211): Sample SC-10 Depth: 90.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
L>E WL'IZGs`(
'Aim
Photo 19 — GWA-2211): Sample SC-10 Depth: 95.0' Date: 01/12/16
A r
e �
DvKG WCVE G,(
?Ape IwC.- GWA- ZZD
CC)QI►JC ME"4cO!
'TI.1G
Photo 20 — GWA-2211): Sample SC-11 Depth: 100.0' Date: 01/12/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
I
t
uy
�� S7' EKE F3.l,E(ZGtif ,
ALLC" 4i 1'AT rE71 i
t sc';F IC- -W GWA- ZZD
1 tJ,4TE � rJl,riZ/ f b
DEPTH: jogs rT
cogs ci ME-rHco! 5c>IJtC.
t._
'1'1r1G i
Photo 21 - GWA-22D: Sample SC-11 Depth: 105.0' Date: 01/12/16
AL E&l SrATrE�I(
� rJG *- GWA- ZZ
L
Photo 22 — GWA-22D: Sample SS-1 Depth: 108.0' Date: 01/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment
Appendix A, Sample Photographs
fl-4=7 0AMGI(
(�,rt�u mortar ion
U;'lziNG * COW A- 27-fl
CO R Il.! C- M E`rNtip 5o IJ G Y
Photo 23 - GWA-2211): Sample SC-12
Jc- GVA-ZLID
ar- 3 _
'74, 0
U
Depth:108' Date:01/13/16
Photo 24 - GWA-2211): Box 1 of 3 Depth: 111.5-146.9'
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
Date: 01/18/16

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Additional Assessment ��
Appendix A, Sample Photographs
hdrinc.com
—
W+u
l
•E"CA?GY
S TA'!' 'j
aWA- ZZ O
PF
�'/l4iR6
'9i o-+QL.o
lz" 5 f 146 - 154 ter} C— f;,— � 1
FFes— 3r i irwo c i
Qw G 056 - 165 T
��r 27r ' •gQ❑ o/
_ Kull �i {IGL-I T4& FT}
1-
Photo 25 — GWA-22D: Box 2 of 3 Depth: 146.9'-176.0' Date: 01/18/16
Photo 26 — GWA-22D: Box 3 of 3 Depth: 176.0'-186.0' Date: 01/19/16
440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]
13

BORING NUMBER GWA-23S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 1/19/16 COMPLETED 1/19/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY DATE/TIME 1/26/2016 10:15:00 AM 26.20 ft
NOTES 1 DATE/TIME ---
2
o
e
H w
(n W
p
z
w v
w o
J
0 Z Q
j
p>
DESCRIPTION
REMARKS
° W
p
a0
m0>
0
W0
U
o3
Uz
W
W
0
QO
cn Z
0
Refer to adjacent well GWA-23D for lithology
Hole Size:
6" 0'-37.5'
5
10
15
20
25

440 S. Church Street, Suite 900
F)ICharlotte, NC 2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-23S
PAGE 2OF2
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv, NC
W j
c
o
0
W
Wp v
0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
d
QO
UZ
w
W
U
O
03
25
Refer to adjacent well GWA-23D for lithology
30
71
35
Boring Terminated at 37.5'
: A
-
Screened Interval Set at 20'-35'
...:
Monitoring Well Installed on 1/19/16
Bottom of borehole at 37.5 feet.

BORING NUMBER GWA-23D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 1/13/16 COMPLETED 1/21/16 GROUND ELEVATION HOLE SIZE(S) 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY DATE/TIME 1/25/2016 10:15:00 AM 25.00 ft
NOTES 1 DATE/TIME ---
LL j
a
C
o
0
_LLJ
rt
U)
3: H -1
}
>
Y 0�
o
ww
w o
zj Q
O w
0>
DESCRIPTION
REMARKS
° W
0
aU
m0>
n0
E0
03
g0
UZ
w
w
O
�z
0
(ML) SILT, red (10YR 4/8), moist, non -plastic,
Hole Size(s):
non -cohesive, trace mica (SOIL)
9" 0'-70'
5" 70'-83'
5
SD-1
48
(ML) SILT, pale yellow (5Y 8/2), moist,
non -plastic, non -cohesive, trace mica (SOIL)
10
15
SD-2
48
20
25

zz
0
0
0
a
0
U
H
U
O
a
z
W
J
BORING NUMBER GWA-23D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
Y�
z
z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
W
W
U
O
o3
In z
af
25
(ML) SILT, light yellowish brown (10YR 6/4) and
yellow (10YR 7/8), moist, non -plastic,
non -cohesive (SOIL)
30
(ML) SILT, light yellowish brown (10YR 6/4),
yellow (10YR 7/8), and black (10YR 7/8), moist,
non -plastic, non -cohesive, phaneritic
(SAPROLITE)
35
SD-4
101
(ML) SILT, pale brown (2.5Y 7/4) and yellow
(2.5Y 7/6), moist, non -plastic, non -cohesive,
40
aphanitic with Mn veins (SAPROLITE)
(ML) SILT, light yellowish brown (10YR 6/4),
45
SD-5
gg
yellow (10YR 7/8), black (10YR 2/1), and trace
white (N9), moist, non -plastic, non -cohesive,
phaneritic (SAPROLITE)
(ML) SILT, light brownish gray (2.5Y 6/2), moist,
non -plastic, non -cohesive, aphanitic
(SAPROLITE)
50

BORING NUMBER GWA-23D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 4
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
o
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U) ZO
af
of
50
(ML) SILT, light brownish gray (2.5Y 6/2), moist,
Ix
non -plastic, non -cohesive, aphanitic
(SAPROLITE) (continued)
52'-54.5' Driller noted soft drilling, rapid
advance
55
SD-6
93
55' Driller noted hard drilling
METADIABASE, very strong, very dark grayish
olive (10Y 3/2) and pale yellow (5Y 8/2), aphanitic,
thinly to very thinly foliated
(WEATHERED/FRACTURED ROCK)
(ML) SILT, light brownish gray (2.5Y 6/2), moist,
non -plastic, non -cohesive, aphanitic, with gravel to
cobble sized fragments of Metadiabase
(SAPROLITE/WEATHERED ROCK)
60
(ML) SILT WITH SAND, yellowish brown (10YR
5/4), moist, non -plastic, non -cohesive, phaneritic,
(SAPROLITE/WEATHERED ROCK)
(SW-SM) SAND WITH SILT AND GRAVEL, gray
(2.5Y 5/1), moist, fine to coarse with gravel sized
fragments of Metadiabase
(SAPROLITE/WEATHERED ROCK)
(ML) SILT WITH SAND, yellowish brown (10YR
65
SD-7
107
5/4), moist, non -plastic, non -cohesive, phaneritic,
(SAPROLITE/WEATHERED ROCK)
65.5' Driller noted hard drilling
META -QUARTZ DIORITE, very strong, white (N9)
and black (N2.5), phaneritic, massive
(WEATHERED/FRACTURED ROCK)
70
70' Borehole reamed to 9"; 6" PVC casing
installed to 69' and grouted to surface on
1/19/16
,.
70'-71.9' Very intensely fractured and
mechanically broken, Fe stained
72.5' Fracture, 301, Fe stained
73.9'-74.5' Fracture, 70°, Fe stained
i..
75

440 S. Church Street, Suite 900
F)I Charlotte, NC 2875
Phone:[phone]
6700
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-23D
PAGE 4OF4
PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv. NC
LLJ Z
c
o
e
H.-�
} W
�Lu
(n W
�ZJ
>-
YW
p
z
w
w o
dU
Q
j
p>
DESCRIPTION
REMARKS
° W
p
m0>
UZ
O
OE0
W
U
o�
QO
W
0
75
95
META -QUARTZ DIORITE, very strong, white (N9)
and black (N2.5), phaneritic, massive
-
(WEATHERED/FRACTURED ROCK) (continued)
-
6.8' Fracture, 300, Fe stained
80
WPM KI
METADIABASE, very strong, dark gray (N4),
aphanitic, non -foliated, massive
(WEATHERED/FRACTURED ROCK)
Bottom of borehole at 83.0 feet.
78.6'-80' Intensely to very intensely fractured
and mechanically broken, 300 to near vertical
fractures, Fe stained
80'-81.5' Intensely weathered, very intensely
fractured and mechanically broken
81.5'-83' Intensely fractured and mechanically
broken
Boring Terminated at 83'
Screened Interval Set at 77'-82'
Monitoring Well Installed on 1/21/16
.• x

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-23D: Sample SC-1 Depth: 0.0' - 10.0' Date: 01/13/16
Photo 2 — GWA-23D: Sample SC-2 Depth: 10.0' - 20.0' Date: 01/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ���
Appendix A, Sample Photographs
^r3
Photo 3 — GWA-23D: Sample SC-3 Depth: 20.0' - 30.0' Date: 01/13/16
Photo 4 — GWA-23D: Sample SC-4 Depth: 30.0' - 35.0' Date: 01/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ���
Appendix A, Sample Photographs
Photo 5 — GWA-23D: Sample SC-4 Depth: 30.0' - 40.0' Date: 01/13/16
Photo 6 — GWA-23D: Sample SC-4 Depth: 35.0'-40.0' Date: 01/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 7 — GWA-23D: Sample SC-5 Depth: 40.0' - 45.0' Date: 01/13/16
Photo 8 — GWA-23D: Sample SC-5 Depth: 40.0' - 50.0' Date: 01/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs FN
Photo 9 — GWA-2311): Sample SC-5 Depth: 45.0' - 50.0' Date: 01/13/16
Photo 10 — GWA-2311): Sample SC-6 Depth: 50.0' - 55.0' Date: 01/18/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — GWA-23D: Sample SC-6 Depth: 50.0' - 60.0' Date: 01/18/16
Photo 12 — GWA-23D: Sample SC-6 Depth: 55.0' - 60.0' Date: 01/18/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 13 — GWA-2311): Sample SC-7 Depth: 60.0' - 65.0' Date: 01/18/16
Photo 14 — GWA-2311): Sample SC-7 Depth: 60.0' - 70.0' Date: 01/18/16
hdrinc.com
440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs FN
Photo 15 — GWA-2311): Sample SC-7 Depth: 65.0'-70.0' Date: 01/18/16
Photo 16 — GWA-2311): Box 1 of 2 Depth: 70.0' - 80.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ���
Appendix A, Sample Photographs
Photo 17 — GWA-23D: Box 2 of 2 Depth: 80.0' - 83.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER GWA-24S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 3/1/16 COMPLETED 3/1/16 GROUND ELEVATION HOLE SIZE(S) 9, 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY DATE/TIME 3/15/2016 3:00:00 PM 36.50 ft
NOTES 1 DATE/TIME ---
aZ
_
~W
U) w
r
o
Z
w w
_j 00
_j D Q
j
p>
DESCRIPTION
REMARKS
° W
Q
dU
g0
m0>
UZ
0
�0
U
o3
U)O
W
Lu
0
0
See Log of GWA-24D for lithologic description
Boring advanced for purpose of installing
monitoring well. Holes sizes: 9", 0-10.0' and
6", 10.0-39.0'
5
10
15
20
25

440 S. Church Street, Suite 900
Charlotte, NC2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-24S
PAGE 2OF2
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv, NC
W j
c
o
0
_
rW
�H�
Y�
�
c�
z
LU
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
UZ
w
U
o�
QO
w
O
25
See Log of GWA-24D for lithologic description
(continued)
33� ,
001
Bottom of borehole at 39.0 feet.
Monitoring well installed 3/1/16. Well screen
interval 22.5-37.5'
17

BORING NUMBER GWA-24D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 2/18/16 COMPLETED 2/29/16 GROUND ELEVATION HOLE SIZE(S) 10, 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY DATE/TIME 3/15/2016 3:00:00 PM 37.40 ft
NOTES 1 DATE/TIME ---
LL j
a
C
o
0
_LLJ
rt
U)
3: H -1
}
>
Y 0�
o
ww
w o
zj Q
O w
0>
DESCRIPTION
REMARKS
° W
0
aU
m0>
n0
E0
03
g0
UZ
w
w
O
� Z
0
JCL) CLAY, dark reddish brown (5YR 3/4), moist,
\low plasticity, cohesive (SOIL) /
-------------------
(ML) SILT, red (2.5Y 4/8), moist, low plasticity,
Hole Sizes: 10", 0-10.0'; 9", 10.0-120.0'; 5",
cohesive (SOIL)
120.0-135.0'
SD-1
108
5
--------------------
(ML) SILT, red (7.5YR 4/8) and yellow (10YR
2/8), dry, low plasticity, cohesive, micaceous,
indistinct relict foliation (SAPROLITE)
10
SD-2
96
15
20
SD-3
108
25

ZZ
0
0
0
a
U
H
O
a
Z
W
J
BORING NUMBER GWA-24D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
Wp v
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
w
W
U
O
o3
cn Z
of
of
W
25
(ML) SILT, red (1 OR 5/8), yellow (10YR 8/6), and
black (10YR 2/1), dry, non -plastic, non -cohesive,
micaceous, phaneritic, trace Mn veins
(SAPROLITE)
As above, except brownish yellow (10YR 6/6), red
(1OR 5/8), and black (10YR 2/1), moist, trace
kaolin, sub -horizontal foliation
30
As above, with trace sand
SD-4
120
35
40
43.0-45.0': Relic fractures, 501
SD-5
120
45
--------------------
(ML) SILT, strong brown (7.5YR 5/6) and reddish
yellow (7.5YR 6/8), moist, low plasticity, cohesive,
aphanitic texture (SAPROLITE)
(ML) SILT, yellowish brown (10YR 5/4) and white
(N9.5), moist, non -plastic, non -cohesive,
micaceous, trace sand, phaneritic (SAPROLITE)
50

BORING NUMBER GWA-24D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
LL j
a
C
o
0
_uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U)ZO
af
D
50
(ML) SILT, yellowish brown (10YR 5/4) and white
(N9.5), moist, non -plastic, non -cohesive,
micaceous, trace sand, phaneritic (SAPROLITE)
(continued)
SD-6
120
55
55.0-58.0': Frequent Kaolin -filled relic
fractures
60
--------------------
(ML) SILT WITH SAND, as above, more granular,
stiffer, light olive brown (2.5Y 5/4), with pyrite,
horizontal foliation (SAPROLITE)
62.5': quartz vein, —1" thick
SD-7
120
65
70
SD-8
120
75

Zz
0
0
0
a
U
H
O
a
Z
J
BORING NUMBER GWA-24D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
Wv
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
p
QO
UZ
w
W
U
O
o3
cn Z
of
of
W
75
(ML) SILT WITH SAND, as above, more granular,
stiffer, light olive brown (2.5Y 5/4), with pyrite,
horizontal foliation (SAPROLITE) (continued)
(CL) CLAY, very dark grayish green (5Y 4/2),
80
SD-9
120
weathered diabase vein (SAPROLITE)
-- — — — — — — — -----
(CL) SANDY CLAY, olive gray (5Y 5/2), moist,
85
low plasticity, cohesive, with fine to medium sand,
abundant pyrite, mica, aphanitic (SAPROLITE)
90
SD-
10
60
- - - - - - - - - - - - - - - - - - - -
(ML) SILT WITH SAND, light olive brown (2.5Y
5/4), moist, non -plastic, non -cohesive,
micaceous, with sand, pyrite, phaneritic,
horizontal foliation (SAPROLITE)
95
--------------------
(CL) SANDY CLAY, olive (5Y 4/3), moist, low
plasticity, cohesive, with coarse sand to
SD -
granule -size diabase fragments (SAPROLITE)
11
50
sharp contract
100

a
z
0
0
0
a
U
H
O
a
z
W
J
BORING NUMBER GWA-24D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 5 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
v
W
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
p
QO
UZ
w
W
U
O
o3
l4 Z
of
of
W
100
SD-
36
(ML) SILT WITH SAND, light olive brown (2.5Y
Sharp contact at 100'
12
5/3) and white (N9.5), dry, non -plastic,
non -cohesive, weathered feldspar, amphibole,
quartz, phaneritic, with laminae of light olive
brown (2.5Y 5/4) clay (weathered diabase)
(SAPROLITE)
SD-
13
3
6
105
- - - - - - - - - - - - - - - - - - - -
(CL) CLAY, dark grayish olive (10Y 4/2), dry, low
plasticity, cohesive, aphanitic, with thin laminae of
dark grayish green (5GY 4/2) clay (weathered
diabase) (SAPROLITE)
SD-
14
108
110
----------------------
(ML) SILT, light brownish gray (2.5Y 6/2), moist,
115
SD -
60
15
non -plastic, non -cohesive, aphanitic, with gravel to
cobble sized fragments of Metadiabase
(SAPROLITE/WEATHERED ROCK)
--------------------
META-QUARTZ DIORITE, strong, white (7.5YR
8/1) and black (10YR 2/1), phaneritic,
non -foliated, slightly weathered
2/25/16, reamed 9" hole to 120.0'. installed 6"
120
SD-
30
(WEATHERED/FRACTURED ROCK)
PVC casing to 120.0', grouted to surface.
2/28/15, begin sonic coring from 121.5'
16
r:
121.9': Fracture, 201, Fe staining
122.2': Fracture, 201, Fe staining
122.2-122.6': Fracture, 600, Fe staining
123.4': Fracture, 100, trace Fe staining, pyrite.
124.1': Fracture, horizontal, trace Fe staining,
125
Pyrite

440 S. Church Street, Suite 900
Charlotte, NC2875
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
BORING NUMBER GWA-24D
PAGE 6OF6
PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv. NC
W Z
c
o
e
H
HW
ZJ
Y�
C)
z
z�
w
W
dU
Q
j
O
p>
W0
DESCRIPTION
REMARKS
OW
p
Q
m0>
UZ
w
w
U
0
o3:
O
125
META -QUARTZ DIORITE, strong, white (7.5YR
124.3': Fracture, 200, abundant pyrite, trace Fe
RC-1
67
8/1) and black (10YR 2/1), phaneritic,
staining
-
non -foliated, slightly weathered
126.0': Fracture, 200, trace pyrite, trace Fe
(WEATHERED/FRACTURED ROCK) (continued)
staining
-
126.5': Fracture, 300, trace Fe staining
126.5-127.3': Fracture, 700, pyrite, trace Fe
-
staining
130
METADIABASE, strong, dark gray (N4), aphanitic,
non -foliated, massive, pitted 131.5-133.2'
-
(WEATHERED/FRACTURED ROCK)
-
131.8': Fracture, 200, trace Fe staining
RC-2
80
132.1': Fracture, 200, Fe staining
132.1-132.5': Fracture 700, trace Fe, Mn
META -QUARTZ DIORITE, very strong, white (N9)
staining; 132.3': Fracture, 500, trace Fe, Mn
_
and black (N2.5), phaneritic, massive (SOUND
staining, 132.9': Fracture, 100, trace Fe
ROCK)
staining
135
Monitoring well installed 2/29/15; well screen
interval 123.0- 128.0'
Bottom of borehole at 135.0 feet.

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-24D: Sample SC-1 Depth: 5.0' Date: 02/18/16
Photo 2 — GWA-24D: Sample SC-2 Depth: 10.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — GWA-24D: Sample SC-2 Depth: 15.0' Date: 02/19/16
Photo 4 — GWA-24D: Sample SC-3 Depth: 20.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — GWA-24D: Sample SC-3 Depth: 25.0' Date: 02/19/16
Photo 6 — GWA-2411): Sample SC-4 Depth: 30.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs
Photo 7 — GWA-24D: Sample SC-4 Depth: 35.0' Date: 02/19/16
Photo 8 — GWA-24D: Sample SC-5 Depth: 40.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 9 — GWA-2411): Sample SC-5 Depth: 45.0' Date: 02/19/16
Photo 10 — GWA-2411): Sample SC-6 Depth: 50.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — GWA-2411): Sample SC-6 Depth: 55.0' Date: 02/19/16
Photo 12 — GWA-24D: Sample SC-7 Depth: 60.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 13 — GWA-24D: Sample SC-7 Depth: 65.0' Date: 02/19/16
Photo 14 — GWA-24D: Sample SC-8 Depth: 70.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs FN
Photo 15 — GWA-24D: Sample SC-8 Depth: 75.0' Date: 02/19/16
Photo 16 — GWA-24D: Sample SC-9 Depth: 80.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ���
Appendix A, Sample Photographs
Photo 17 — GWA-2411): Sample SC-9 Depth: 85.0' Date: 02/19/16
Photo 18 — GWA-2411): Sample SC-10 Depth: 90.0' Date: 02/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 19 — GWA-2411): Sample SC-11 Depth: 95.0' Date: 02/20/16
Photo 20 — GWA-2411): Sample SC-12 Depth: 100.0' Date: 02/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
-qW.F
Photo 21 — GWA-24D: Sample SC-13 Depth: 105.0' Date: 02/20/16
Photo 22 — GWA-24D: Sample SC-14 Depth: 110.0' Date: 02/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs
Dok-- E,nerj � Allen S4a4;cnrti
Re
Photo 23 — GWA-24D: Sample SC-15 Depth: 115.0' Date: 02/22/16
Photo 24 — GWA-24D: Sample SC-16 Depth: 119.0' Date: 02/22/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 25 — GWA-24D: Box 1 of 1 Depth: 121.5' - 135.0' Date: 02/26/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER GWA-24BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 3/1/16 COMPLETED 3/14/16 GROUND ELEVATION HOLE SIZE(S) 10, 9, 6, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY D. Campbell CHECKED BY �F DATE/TIME 3/15/2016 3:00:00 PM 38.10 ft
NOTES 1 DATE/TIME ---
LL j
a
C
o
0
_LLJ
rt
U)
3: H -1
}
>
Y 0�
o
ww
w o
zj Q
O w
0>
DESCRIPTION
REMARKS
° W
0
aU
m0>
n0
E0
03
g0
UZ
w
w
O
� Z
0
Hole Sizes: 10", 0-10.0'; 9", 10.0-120.0'; 6",
120.0-122.0'; 5", 122.0-169.5'
See Log of GWA-24D for lithologic description
0-117.0'
5
10
15
20
25

BORING NUMBER GWA-24BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w-j�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
UZ
O
wU
U
o3
�O
w
LU
0
25
See Log of GWA-24D for lithologic description
0-117.0' (continued)
30
35
40
45
50

BORING NUMBER GWA-24BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
Hp
}
Ye
p
z
wv
LLJ
-j� Q
j
p>
DESCRIPTION
REMARKS
° W
p
CL
m0>
O
wO
U
o3
QO
UZ
w
w
O
z
50
See Log of GWA-24D for lithologic description
0-117.0' (continued)
55
60
65
70
75

BORING NUMBER GWA-24BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
Hp
}
Y�
p
z
w-j�
Q
jO
p>LU
DESCRIPTION
REMARKS
° W
p
0 U
m0>
wU
U
o3
UZ
w
LU
< O
0
75
See Log of GWA-24D for lithologic description
0-117.0' (continued)
80
85
90
95
100

BORING NUMBER GWA-24BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wz
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U) z0
cr
af
of
100
See Log of GWA-24D for lithologic description
0-117.0' (continued)
105
--------------------
METADIABASE, strong, dark gray (N4), aphanitic,
110
115
massive, non -foliated
(WEATHERED/FRACTURED ROCK)
120
META -QUARTZ DIORITE, strong, white (7.5YR
3/3/16, reamed 9" hole to 120.0'; 3/4/16,
8/1) and black (10YR 2/1), phaneritic,
installed 6" PVC casing to 120.0' grouted to
non -foliated, slightly weathered
surface; 3/9/16, begin sonic coring from 122.0'
(WEATHERED/FRACTURED ROCK) — _ —
META -QUARTZ DIORITE, as above except very
strong, white (N9) and black (N2.5), fresh
(SOUND ROCK)
125

BORING NUMBER GWA-24BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 6 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
wZ
o
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
o3
:�
UZ
w
w
O
0
U)ZO
af
D
125
META -QUARTZ DIORITE, as above except very
RC-1
99
strong, white (N9) and black (N2.5), fresh
(SOUND ROCK) (continued)
130
130.4': Fracture 201, trace epidote
mineralization
131.3': Fracture 20°, trace epidote
mineralization
133.0': Fracture 201, trace pyrite, epidote
mineralization
RC-2
93
135
--------------------
METADIABASE, very strong, dark gray (N4),
136.0-136.4': Fractures (2) 55° and 70°, Fe
aphanitic, massive, non -foliated (SOUND ROCK)
staining, pitted
137.2': Fracture, 10°, Fe staining, pyrite
138.0-139.1': Fracture zone, horizontal - 40°
Fe staining, epidote mineralization (core loss
zone)
140
----------------------
META-QUARTZ DIORITE, very strong, white (N9)
139.5': Fracture, 30°, Fe staining
140.3': Fracture, 20°, Fe, Mn staining
and black (N2.5), phaneritic, non -foliated, massive
(SOUND ROCK)
141.5': Fractures (2), horizontal and 40°, Fe
staining
141.9': Fracture, 401, Fe, Mn staining
143.4' - Conta_ct_60'
METADIABASE, very strong, dark gray (N4), —
Fracture 20°, pyrite, epidote
RC-3
81
aphanitic, massive, non -foliated (SOUND ROCK)
mineralization
mineralization
mineralzatiotnre 10°, pyrite, epidote
145
--------------------
META -QUARTZ DIORITE, very strong, white (N9)
and black (N2.5), phaneritic, non -foliated, massive
(SOUND ROCK)
150

440 S. Church Street, Suite 900
Charlotte, NC2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269371
W Z
o
c
o
0
(n w
w�QmOofL
o
a
M
W0
IL
0
V>
0
Y
QO
UZ
W
0
(n Z
W
W
W
0_
RC -
BORING NUMBER GWA-24BR
PAGE 7OF7
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT LOCATION Gaston Countv, NC
DESCRIPTION
META -QUARTZ DIORITE, very strong, white (N9)
and black (N2.5), phaneritic, non -foliated, massive
(SOUND ROCK) (continued)
94 151.8 to 164.5': xenoliths common
155
-
RC-5
91
160
RC-
157.1': Quartz vein, 401, 2" thick
REMARKS
--------------------
METADIABASE, very strong, dark gray (N4), 64.5-165.0': Very intensely fractured
aphanitic, massive, non -foliated (SOUND ROCK)
100 165.5-166.4': Intensely fractured, intersecting
501 fractures
META -QUARTZ DIORITE, very strong, white (N9) inera Fracture, 600, Mn staining, epidote
m
and black (N2.5), phaneritic, non -foliated, massive mineralization
(SOUND ROCK)
169.2-7: Fracture, 600, Mn staining, E
Bottom of borehole at 169.5 feet. mineralization
Monitoring well installed 3/14/16, well
interval 160.6-165.5'
0
Z
0:�
0W
z3
0
2

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-24BR: Box 1 of 5 Depth: 122.0' - 131.3' Date: 03/09/16
Photo 2 — GWA-24BR: Box 2 of 5 Depth: 131.3' - 141.5' Date: 03/09/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ���
Appendix A, Sample Photographs
Photo 3 — GWA-24BR: Box 3 of 5 Depth: 141.5' - 149.5' Date: 03/09/16
Photo 4 — GWA-24BR: Box 4 of 5 Depth: 149.5' - 159.5' Date: 03/09/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Plant Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — GWA-24BR: Box 5 of 5 Depth: 159.5' - 169.5' Date: 03/09/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER GWA-26S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
DATE STARTED 1/27/16 COMPLETED 1/27/16 GROUND ELEVATION HOLE SIZE(S) 3, 5 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY M. Sheehan CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
LLJ �
c
o
e
=
}
HLu
to w
}
p
z
wv
_j Q
-, D Q
>
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
O
EO
U
o3
QO
Uz
w
w
O
cn z
Cf
0
See boring log for GWA-26D for lithology
5
10
15
20
25

BORING NUMBER GWA-26S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen - Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w0
0 z Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
UZ
O
wU
U
o3
�O
w
w
0
25
See boring log for GWA-26D for lithology
(continued)
30
Core Samples from 47-57' and 57-67' are wet
35
40
45
r
50

BORING NUMBER GWA-26S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075
PAGE 3 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen
-Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION
Gaston County NC
wz
a�
C
o
0
_
W
3:
Jam'
Y
O
c�
KJ
W v
w 0
� zj Q
o>
p>
DESCRIPTION
REMARKS
° W
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U)z0
cr
af
of
50
See boring log for GWA-26D for lithology
(continued)
55
60
65
Bottom of borehole at 67.5 feet.

BORING NUMBER GWA-26D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
DATE STARTED 1/20/16 COMPLETED 1/26/16 GROUND ELEVATION HOLE SIZE(S) 10, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY M. Sheehan/D. Bishuk CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
w�
a�
C
o
0
_
W
J>'
Y
O
c�
KJ
W v
w
]ice
0 zj Q
O Lu
p>
DESCRIPTION
REMARKS
° W
—10
m0>
n0
E0
03
g�
UZ
w
w
O
�Z
0
(CL) LEAN CLAY, red (2.5YR 4/8), moist,
medium plasticity, cohesive, highly weathered,
trace muscovite, no relic rock fabric (SOIL)
SD-1
60
5
--------------------
(ML) SILT, light brown (7.5YR 6/4), dry,
10
non -plastic, non -cohesive, highly weathered, very
SD-2
120
weathered, very uniform grain size, no relic rock
fabric (SOIL)
15
20.5-25.0': color change to red (2.5YR 5/6)
20
SD-3
120
25

zz
0
0
0
a
0
U
H
U
O
a
z
W
J
BORING NUMBER GWA-26D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
3:
Y�
CY
0z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
In
2
UZ
W
W
U
O
03
QO
cn Z
25
(SM) SILTY SAND, light yellowish brown (10YR
6/4), dry to moist, non -plastic, non -cohesive, no
relic rock fabric (SOIL)
----------------------
(SM) SILTY SAND, light yellowish brown (10YR
As shown in core photo, part of SC-4 sample
6/4) grading downward to pale brown (2.5YR 7/2),
lost to ground due to broken core sleeve
dry, non -plastic, non -cohesive, no relic rock fabric
in unconsolidated material. 0.5' lenses of fine to
medium grained, isotropic light white slightly
weathered quartz -feldspathic rock (SOIL)
30
SD-4
120
35
---------------------
(SP-SM) POORLY GRADED SAND WITH SILT,
pale brown (10YR 6/3), moist, non -plastic,
cohesive, highly weathered, moderate relic rock
fabric (diorite) (SAPROLITE)
40
Possible water table at 40'
SD-5
120
45
47': Well developed relic rock (diorite) fabric, highly
uniform, moderately weathered
50 ]
i
I
I
I

zz
0
0
0
a
U
H
O
a
z
W
J
BORING NUMBER GWA-26D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
v
W
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
p
QO
UZ
w
W
U
O
03
cn Z
of
0'
W
50
(SP-SM) POORLY GRADED SAND WITH SILT,
pale brown (10YR 6/3), moist, non -plastic,
cohesive, highly weathered, moderate relic rock
fabric (diorite) (SAPROLITE) (continued)
SD-6
120
55
57-67': Highly uniform
60
SD-7
120
65
--------------------
(SP-SM) POORLY GRADED SAND WITH SILT,
light brownish gray (2.5YR 6/2), wet, non -plastic,
predominantly non -cohesive, moderately
weathered, moderate relic rock fabric (diorite)
(SAPROLITE)
70
SD-8
120
75

zz
0
0
0
a
U
H
U
O
a
z
W
J
BORING NUMBER GWA-26D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
3:
Y�
CY
0z
Lu
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
z
In
2
UZ
W
U
03
QO
U) Z
W
O
75
(SP-SM) POORLY GRADED SAND WITH SILT,
light brownish gray (2.5YR 6/2), wet, non -plastic,
predominantly non -cohesive, moderately
weathered, moderate relic rock fabric (diorite)
(SAPROLITE) (continued)
77': trace felsic rock fragments, material is uniform
in color and texture
80
SD-9
120
85
90
SD -
10
120
95
--------------------
DIORITE, fresh, competent
100

Zz
0
0
0
a
U
(n
a
Z
w
J
BORING NUMBER GWA-26D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 5 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371 PROJECT LOCATION Gaston County NC
W j
c
o
0
W
z
Wp v
d 0
>
m O a
O
O
Y
DESCRIPTION
REMARKS
° W
UZ
w
W
U
O
o3
QO
(n Z
of
100
DIORITE, fresh, competent (continued)
SD-
30
11
Top of Rock at 104'
105
META -QUARTZ -DIORITE, very strong, light
Bottom of 6" PVC surface casing set at 107.0'
bluish gray (10B 7/1), white (GLEY 1 8/N), Gray
on 1/20/16
(GLEY 1 5/N), bluish black (5PB 2.5/1), dark
greenish gray (5GY 4/2), and pale yellow (5GY
6/4), phaneritic, non -foliated, massive, slightly
decomposed, slightly disintegrated, fracture
110
density is not reported due to excessive
mechanical fracturing by Roto-Sonic drilling
method. Phenocrysts consist of albite and
moonstone plagioclase feldspar, smoky and milky
quartz, amphibole, pyroxene, and muscovite, one
RC-1
35
partially open fracture with epidote mineralization
at 110-110.5' (60° dip), interval 111-117' is
moderate to highly weathered and moderate to
intensely fractured with Fe- and Mn- stained
fracture surfaces on numerous recovered bedrock
fragments.
115
120
RC-2
69
125

BORING NUMBER GWA-26D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075
PAGE 6 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Allen -Post CSA Additional Assessment
PROJECT NUMBER 269371
PROJECT LOCATION Gaston County NC
W j
c
o
0
_
rW
�H�
Y�
CY
z
z
a
O
DESCRIPTION
REMARKS
° W
Lu
d 0
m O >
O
0
Y
o3
QO
UZ
w
W
U
O
(n Z
of
of
W
125
Bottom of borehole at 127.0 feet.
a
(7
z
z
w
w
w
Q
J
Q
Z
H
Q
Q
U
H
U
O
a
z
w
J
J
g
w
m
m
0
O
Q
a
i7
z
Y
0
O
3r
a_
U
0
co
0
m
N
N
H
Q1
g
0
z
z
0
J
z
Z
w
0
m
Q
Z
J
O
Q
U
2
H
O
z

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-26D: Sample SC-1 Depth: 0.0' - 7.0' Date: 01/20/16
Photo 2 — GWA-26D: Sample SC-2 Depth: 7.0' - 17.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — GWA-26D: Sample SC-2 Depth: 7.0' - 17.0' Date: 01/20/16
Photo 4 — GWA-26D: Sample SC-2 Depth: 7.0' - 17.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — GWA-26D: Sample SC-3
Depth: 17.0' - 27.0' Date: 01/20/16
Photo 6 — GWA-26D: Sample SC-3 Depth: 17.0' - 27.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 7 — GWA-26D: Sample SC-3 Depth: 17.0' - 27.0' Date: 01/20/16
Photo 8 — GWA-26D: Sample SC-4 Depth: 27.0' - 37.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 9 — GWA-26D: Sample SC-4 Depth: 27.0' - 37.0' Date: 01/20/16
Photo 10 — GWA-26D: Sample SC-4 Depth: 27.0' - 37.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
F
IR
cITE.AL.LEn( SS
PATE -SAN 20 2014
"1414"bi r a0i06•. GWA-26T
:■ Ifil►flr
"WIN bE.P
�MYII SC-4
171
CM
Photo 11 — GWA-26D: Sample SC-4 Depth: 27.0' - 37.0' Date: 01/20/16
Photo 12 — GWA-26D: Sample SC-4 Depth: 27.0' - 37.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
A
Photo 13 — GWA-26D: Sample SC-4 Depth: 27.0' - 37.0' Date: 01/20/16
Photo 14 — GWA-26D: Sample SC-5 Depth: 37.0' - 47.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
R 9
f fR� i1
n-vawe+ •�
A
4
Photo 15 — GWA-26D: Sample SC-5 Depth: 37.0' - 47.0'
25 26 27 28 2.
Date: 01 /20/16
Photo 16 — GWA-26D: Sample SC-5 Depth: 37.0' - 47.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 17 — GWA-26D: Sample SC-5 Depth: 37.0' - 47.0' Date: 01/20/16
Photo 18 — GWA-26D: Sample SC-5 Depth: 37.0' - 47.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 19 — GWA-26D: Sample SC-6 Depth: 47.0' - 57.0' Date: 01/20/16
Photo 20 — GWA-26D: Sample SC-6 Depth: 47.0' - 57.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
40 E7 42 43 44 45.
Photo 21 — GWA-26D: Sample SC-6 Depth: 47.0' - 57.0' Date: 01/20/16
�N ISd
20 2014 1
►wA-261>
'7.0-57o Fr
Ss-6
Photo 22 — GWA-26D: Sample SC-6 Depth: 47.0' - 57.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
1 I
-- --- --- --- --- --- ---
Photo 23 — GWA-26D: Sample SC-6 Depth: 47.0' - 57.0' Date: 01/20/16
Photo 24 — GWA-26D: Sample SC-6 Depth: 47.0' - 57.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 25 — GWA-26D: Sample SC-7 Depth: 57.0' - 67.0' Date: 01/20/16
3 5 6 7 10
L 5 9
Photo 26 — GWA-26D: Sample SC-7 Depth: 57.0' - 67.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
'JoiZNk
I
t.
s
EY1 2s 'Lb 27 za 29 36 31 33 34 33 P i 335 39 40 41 43 44 45 46 41 4v 54 5t
v .] .A .Y Bj1 ..2 .3 .4 .5 G ] 2. 3 .4
Photo 27 — GWA-26D: Sample SC-7 Depth: 57.0' - 67.0' Date: 01/20/16
Photo 28 — GWA-26D: Sample SC-7 Depth: 57.0' - 67.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 29 — GWA-26D: Sample SC-7 Depth: 57.0' - 67.0' Date: 01/20/16
{y' r
Photo 30 — GWA-26D: Sample SC-7 Depth: 57.0' - 67.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 31 — GWA-26D: Sample SC-8 Depth: 67.0' - 77.0' Date: 01/25/16
A i _
EM
Photo 32 — GWA-26D: Sample SC-8 Depth: 67.0' - 77.0'
Date: 01 /25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
r . - r r., r
Photo 33 — GWA-26D: Sample SC-8
'u
Depth: 67.0' - 77.0'
Date: 01 /25/16
Photo 34 — GWA-26D: Sample SC-8 Depth: 67.0' - 77.0' Date: 01/25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
fr_ Yii
+ #v T
Photo 36 — GWA-26D: Sample SC-9 Depth: 77.0' - 87.0'
a9
y
Date: 01 /25/16
Date: 01 /25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 37 — GWA-26D: Sample SC-9 Depth: 77.0' - 87.0' Date: 01/25/16
C
Photo 38 — GWA-26D: Sample SC-10 Depth: 87.0' - 97.0' Date: 01/25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Is
s zo,c
,�zba
17r Ft
-Ic
U ibio
Photo 39 — GWA-26D: Sample SC-10 Depth: 87.0' - 97.0' Date: 01/25/16
Photo 40 — GWA-26D: Sample SC-10 Depth: 87.0' - 97.0' Date: 01/25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Allen Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 41 — GWA-26D: Sample SC-10 Depth: 87.0' - 97.0' Date: 01/25/16
Photo 42 — GWA-26D: Sample SC-11 Depth: 97.0' - 107.0' Date: 01/25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]