NC0038377_1-Boring and Well Diagrams_20150902

PROJECT: Mayo Station
WELL / BORING NO: AB-01
PROJECT NO: 1026.105
STARTED: 3/19/15 COMPLETED: 3/19/15
DRILLING COMPANY: Cascade Drilling
NORTHING: EASTING:
DRILLING METHOD: GeoProbe
G.S. ELEV: ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 68.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
WW
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<
U
DESCRIPTION
o
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WELL
CONSTRUCTION
No recovery.
BOTTOM ASH, gray, loose, dry, mostly fine to coarse
rained sand
.
5
10
.
BOTTOM ASH, moist at 12.4'.
15
BOTTOM ASH, gray/tan, loose, saturated, fine to
coarse grained sand/gravel.
FLY ASH, gray, moderately dense, saturated, mostly
fine sand, few silt.
20
.
No recovery.
BOTTOM ASH, mottled, Dense, saturated, mostly fine
to coarse grained sand.
FLY ASH, gray, dense, saturated, mostly fine grained
sand.
BOTTOM ASH, loose, saturated, mostly coarse sand to
ravel.
FLY ASH, same as 21.8 ft.
25
No recovery.
BOTTOM ASH, same as 22.2 ft.
FLY ASH, same as 21.8 ft.
BOTTOM ASH, same as 22.2 ft.
FLY ASH, same as 21.8 ft.
30
No recovery.
BOTTOM ASH, same as 22.2 ft.
Mix of BOTTOM and FLY ASH, dark gray, saturated,
moderately dense, mostly fine sand, little coarse
777
35
grained sand, little silt.
No recovery.
BOTTOM ASH, same as 22.2 ft.
FLY ASH, dark gray, saturated, moderately dense.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenville, South Carolina 29601
s)mTerm Phone:[phone] PAGE 1 OF 2

PROJECT: Mayo Station
PROJECT NO: 1026.105
DRILLING COMPANY: Cascade Drilling
DRILLING METHOD: GeoProbe
BOREHOLE DIAMETER: 2 IN
NOTES:
U
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W <O ? DESCRIPTION
CD
lel7
50
6101
60
M-1
70
WELL / BORING NO: AB-01
STARTED: 3/19/15
NORTHING:
G.S. ELEV:
ft
DEPTH TO WATER: ft TOC
LOGGED BY:
J. Wylie
a
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FLY ASH, dark gray, saturated, moderately dense.
(continued)
No recovery.
FLY ASH.
No recovery.
Ash material from hole collapse.
No recovery.
4 in. layer of FLY ASH over BOTTOM ASH.
MIL SILT, mottled, orange, tan, wet, dense, saprolitic at
67.3-68 ft.
COMPLETED: 3/19/15
EASTING:
M.P. ELEV: ft
TOTAL DEPTH: 68.0 ft BGS
CHECKED BY: E. Black
WELL
CONSTRUCTION
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
GreenvTerms Phone: l864 421 9999 Carolina 29601 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: AB-02
PROJECT NO: 1026.105
STARTED: 3/18/15 COMPLETED: 3/18/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012778.26 EASTING: 2030477.81
DRILLING METHOD: GeoProbe
G.S. ELEV: 490.68 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 37.2 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
w
p
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Q O
of
CD
U)
DESCRIPTION
Q�
p
mO
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CONSTRUCTION
No recovery.
BOTTOM ASH, dark gray, moist, mostly fine to coarse
sand.
5
.
No recovery.
BOTTOM ASH, dark gray, moist, mostly fine to coarse
sand, some gravel/coal fragments.
10
BOTTOM ASH, same as above at 8 ft.
FLY ASH, black, saturated, mostly fine sand, little silt,
dense.
15
BOTTOM ASH, same as above.
No recovery.
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
20
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
25
No recovery.
30
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
No recovery.
35
ML
SILT, tan, moise, mostly silt with some fine to medium
sand.
Mottled tan/gray, dry, very dense, weathered gneiss.
(SAPROLITE)
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: AB-03
PROJECT NO: 1026.105
STARTED: 3/18/15 COMPLETED: 3/18/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012714.21 EASTING: 2030856.72
DRILLING METHOD: GeoProbe
G.S. ELEV: 497.34 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 48.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
w
p
U
Q O
of
CD
U)
p
DESCRIPTION
Q�
p
m O
0
a Q
WELL
CONSTRUCTION
No recovery.
BOTTOM ASH, black, dry, loose, mostly fine to
medium sand, poorly graded with some small gravel.
5
No recovery.
FLY ASH, dark gray, wet, silt.
BOTTOM ASH, medium grained, loose, dry, mostly fine
10
to coarse sand with some small gravel.
No recovery.
�Hole colla se material.
_
FLY ASH, dark ra , dry, most) silt, few fine sand.
Same as 8.6'.
FLY ASH, dark gray, moist, mostly silt, few clay.
15
BOTTOM ASH, medium gray, mostly fine sand, moist,
little silt.
^i, c
20
BOTTOM ASH, light to medium gray with tan and
brown, dry, mostly fine to coarse sand with gravel
feces.
FLY ASH, ra , wet, mostIv silt, few fine sand.
BOTTOM ASH, light to medium gray, moist, mojtto
to coarse sand, few silt.
FLY ASH, dark gray, saturated, mostly silt, few
coarse sand.
BOTTOM ASH, light green/gray, medium to coarse
sand, moist, loose.
25
FLY ASH, medium to dark gray, mostly silt, moist,
some fine sand.
.
BOTTOM ASH same as 21.3 ft.
FLY ASH, same as 23.3 ft.
BOTTOM ASH same as 21.3 ft.
FLY ASH, same as 23.3 ft.
BOTTOM ASH, gray, loose, fine to coarse sand, mois
with small lens of silt and gravel 25.6-25.8 ft. .
30
Interbedded FLY and BOTTOM ASH.
FLY ASH, dark gray, wet/saturated, silt.
35
Interlayered and interbedded FLY ASH and BOTTOM
ASH layers, recovery only a few inches thick.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: AB-03
PROJECT NO: 1026.105
STARTED: 3/18/15 COMPLETED: 3/18/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012714.21 EASTING: 2030856.72
DRILLING METHOD: GeoProbe
G.S. ELEV: 497.34 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 48.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
U
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WELLpDESCRIPTION
WW
<
W
ION
CONSTRUCT
(D
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U
SC
SAND, tan to gray, medium to coarse sand with fine
sand and silt, few small gravel, moist.
MIL
SILT, medium to dark gray, mostly silt, some fine sand,
saturated.
--- --
SP
SAND, silty, greenish brown (2.5 YR 5/2), little clay,
moist, some roots/organic matter.
45
ML
SAND, silty, light yellowish brown )2.5 YRE e
clay, moist, low plasticit .
CLAY, silty, yellowish red (5 YR 5/6), moi
plasticity.
Hole collapse material from 4546.2 ft. and 46.2-47.4
ft.. Yellowish red 5 YR 5/6 clav with little silt.
47.4-48 ft. (SAPROLITE)
50
55
60
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: AB-04
PROJECT NO: 1026.105
STARTED: 3/17/15 COMPLETED: 3/17/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012345.36 EASTING: 2030478.85
DRILLING METHOD: GeoProbe
G.S. ELEV: 488.76 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 60.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
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U
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DESCRIPTION
o
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WELL
CONSTRUCTION
No recovery, BOTTOM ASH on surface.
FLY ASH (GLEY1 2.5/N), black, dry, dense, mostly fine
sand, few clay.
SP
SAND, sharp contact, grey, (10 YR 5/1), moist,
moderately dense, mostly fine to coarse, poorly graded
5
sand, little silt/clay.
No recovery.
BOTTOM ASH, same as above, except saturated at 8
ft.
10
BOTTOM ASH, same as above except last six inches
has small gravel sized pieces of rock mixed in.
FLY ASH, (GLEY 5/N), saturated, dense to moderately
dense, interlayered zones (1-4 in.) thick of poorly
sorted sand, mostly fine sand, little silt.
15
No recovery.
20
BOTTOM ASH, same as 10-11.8 ft., saturated from
20-22.1 ft.
FLY ASH, gray, loose, saturated/soupy, mostly fine
sand, little silt, "salt and pepper" color/appearance.
25
No recovery.
30
FLY ASH, same as 15 ft., very saturated/soupy,
alternating layers of fine sand and silt, "salt and
pepper" appearance.
35
.
FLY ASH, same as above.
CLIENT: Duke Energy Progress, LLC.
ra
48 Rver Street, Suite 220 PROJECT LOCATION: Roxboro, NC
148 River
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: AB-04
PROJECT NO: 1026.105
STARTED: 3/17/15 COMPLETED: 3/17/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012345.36 EASTING: 2030478.85
DRILLING METHOD: GeoProbe
G.S. ELEV: 488.76 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 60.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
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WELL
w
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DESCRIPTION
a Q
CONSTRUCTION
p
X
(D
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FLY ASH, same as above.
45
No recovery.
FLY ASH, same as 35 ft.
50
FLY ASH, same as 35 ft.
55
No recovery.
MIL
SILT/PARTIALLY WEATHERED ROCK, (2.5 YR 4/2),
CL
dark grayish brown, saturated, dense, mostly silt with
clay, little coarse sand grading down to rock fragments
in last 8 in. of recove sa rolite
60
Boring terminated at 60 ft. Bentonite added to boring
from 54 to 60 ft. to facilitate well construction.
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-01
PROJECT NO: 1026.105
STARTED: 6/2/15 COMPLETED: 6/2/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012988.38 EASTING: 2029253.96
DRILLING METHOD: Hand Auger
G.S. ELEV: 481.11 ft M.P. ELEV: 483.81 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 13.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
w
p
U
Q O
0
U)
p
DESCRIPTION
2
0 o
u
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m0
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CONSTRUCTION
Grout
�— Bentonite seal
5-
-..ASH
FLY ASH.
>,
2" Sch. 40 threaded PVC
riser
Sand Pack
2" pre -packed well screen
10
ML
SILT, mottled, gray/tan, moist, mostly silt, little fine
sand, few clay. Root noted at 13.5 ft. SAPROLITE .
15
20
25
30
35
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 1 OF 1

PROJECT: Mayo Station
PROJECT NO: 1026.105
WELL / BORING NO: ABMW-02
STARTED: 5/30/15 COMPLETED: 5/31/15
DRILLING COMPANY: Cascade Drilling
DRILLING METHOD: Rotary Sonic
BOREHOLE DIAMETER: 6 IN
NOTES:
NORTHING: 1012778.26 EASTING: 2030477.81
G.S. ELEV: 490.68 ft M.P. ELEV: 492.90 ft
DEPTH TO WATER: ft TOC TOTAL DEPTH: 41.2 ft BGS
LOGGED BY: J. Wylie CHECKED BY: E. Black
W
p
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of
CD
p
DESCRIPTION
2
<
0
OJ p
mO
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CONSTRUCTION
5
10
15
20
25
30
35
.
No recovery.
Grout
2" Sch. 40 threaded PVC
riser
�— Bentonite seal
—Sand Pack
2" pre -packed well screen
BOTTOM ASH, dark gray, moist, mostly fine to coarse
sand.
No recovery.
BOTTOM ASH, dark gray, moist, mostly fine to coarse
sand, some gravel/coal fragments.
BOTTOM ASH, same as above at 8 ft.
FLY ASH, black, saturated, mostly fine sand, little silt,
dense.
BOTTOM ASH, same as above.
No recovery.
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
No recovery.
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
No recovery.
ML
SILT, tan, moise, mostly silt with some fine to medium
sand.
Mottled tan/gray, dry, very dense, weathered gneiss.
(SAPROLITE)
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Ter Phone:l864 421 99lle, South 9 Carolina 29601 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-02
PROJECT NO: 1026.105
STARTED: 5/30/15 COMPLETED: 5/31/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012778.26 EASTING: 2030477.81
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 490.68 ft M.P. ELEV: 492.90 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 41.2 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
of
CD
Q�
m0
45
I
50
55
60
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lina 29601
Greenvlle, South CaroTerra
Phone:l864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-02BR
PROJECT NO: 1026.105
STARTED: 5/28/15 COMPLETED: 6/3/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012781.97 EASTING: 2030476.42
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 490.65 ft M.P. ELEV: 493.85 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 120.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
W
p
U
Q O
Q
C�
p
DESCRIPTION
2
<
0
OJ p
mO
a Q
CONSTRUCTION
No recovery.
BOTTOM ASH, dark gray, moist, mostly fine to coarse
sand.
5
.
No recovery.
BOTTOM ASH, dark gray, moist, mostly fine to coarse
sand, some gravel/coal fragments.
10
BOTTOM ASH, same as above at 8 ft.
FLY ASH, black, saturated, mostly fine sand, little silt,
dense.
15
BOTTOM ASH, same as above.
No recovery.
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
20
2" Sch. 40 threaded PVC
BOTTOM ASH, same as above.
riser
FLY ASH, same as above 12.3 ft.
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
25
No recovery.
30
BOTTOM ASH, same as above.
FLY ASH, same as above 12.3 ft.
No recovery.
35
ML
SILT, tan, moise, mostly silt with some fine to medium
sand.
Mottled tan/gray, dry, very dense, weathered GNEISS.
(SAPROLITE)
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 4

PROJECT: Mayo Station
WELL / BORING NO: ABMW-02BR
PROJECT NO: 1026.105
STARTED: 5/28/15 COMPLETED: 6/3/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012781.97 EASTING: 2030476.42
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 490.65 ft M.P. ELEV: 493.85 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 120.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
WQ
p
U
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of
CD
p
DESCRIPTION
0
O
Jp
m0
WELL
CONSTRUCTION
Grout
6" PVC surface casing
45
Mottled, dark brown, tan, gray, and black, very dense,
dry, saprolitic (schist).
50
Same as above.
55
Same as above.
60
Same as above, strong relict structure, more gneissic
structure/texture.
65
_
RK
Same as above, becoming harder with depth, mostly
rock fragments above 66 W, schistose texture,
saprolite/partially weathered rock contact at 67 ft.
70
No recovery.
75
No recovery from 75-77 ft.
RK
Partially weathered rock/bedrock transition from 77-80
ft. Hard, fresh to slightly weathered GRANITIC
GNEISS, iron and manganese staining on joint
surfaces, dry.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 2 OF 4

PROJECT: Mayo Station
WELL / BORING NO: ABMW-02BR
PROJECT NO: 1026.105
STARTED: 5/28/15 COMPLETED: 6/3/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012781.97 EASTING: 2030476.42
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 490.65 ft M.P. ELEV: 493.85 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 120.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
w
p
U
=c7
Q 0
o
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U)
p
DESCRIPTION
a
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WELL
CONSTRUCTION
Black with thin white bands on folliations, fresh,
PHYLLITE fracture breaks along planes of foliation, top
of bedrock designated at —80 ft.
85
Hard, slightly weathered to fresh, medium grained,
"
GRANITIC GNEISS.
�— Bentonite seal
90
_
Hard, fresh, medium grained, GRANITIC GNEISS, few
closely spaced tight breaks along foliation planes with
no staining or mineralization. High angle fracture at
90.8-91 ft. with mineralized joint surface. Vertical
95
_ -"
fracture/intersecting horizontal fracture at 94.4-95 ft.,
brownish -red surface staining on joint plane. 95-96' no
recovery, 97-100 ft. hard, fresh to slightly weathered,
medium grained GRANITIC GNEISS fractures at 97.3,
99 (healed), 99.3-99.6 ft. Joint surfaces, stained
-
reddish -brown.
Sand Pack
100
2" pre -packed well screen
-
Hard, GRANITIC GNEISS, weathered with abundant
- " -
fractures and reddish brown mineralization, mostly
healed fracture in bottom 6-8".
Abrupt rock change/contact. Black, fresh, fine grained
105
HORNBLENDE GNEISS with 90% mafic minerals with
reddish orange staining on felsic crystallization.
Quartzite vein.
Hard, GRANITIC GNEISS, moderately weathered with
horizontal and vertical fractures some healed).
110
No recovery.
Moderate to severely weathered, dark gray
115
GRANITOID GNEISS, grades into more felsic light gray
GRANITOID GNEISS with some horizontal and vertical
fractures and red -orange mineralization/staining at
joints.
Light gray, moderately weathered GRANITOID
GNEISS with moderate to high angle bedding planes.
Horizontal fractures at 117.5, 118.2, 118.5, and 119 ft.
Sharp co tact into dark gray, fine grained PHYl I ITF
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 3 OF 4

PROJECT: Mayo Station
WELL / BORING NO: ABMW-02BR
PROJECT NO: 1026.105
STARTED: 5/28/15 COMPLETED: 6/3/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012781.97 EASTING: 2030476.42
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 490.65 ft M.P. ELEV: 493.85 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 120.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
O
WELL
w
Q
p
DESCRIPTION
0
Jp
CONSTRUCTION
p
of
CD
m0
\_wvith Mighangle rough oin rom -
Boring terminated at 120 ft. Bentonite added to boring
from 106-120 ft. to facilitate well construction.
125
130
135
140
145
150
155
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 4 OF 4

PROJECT: Mayo Station
WELL / BORING NO: ABMW-03
PROJECT NO: 1026.105
STARTED: 5/18/15 COMPLETED: 5/19/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012714.21 EASTING: 2030856.72
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 497.34 ft M.P. ELEV: 500.17 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 40.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
W
p
U
Q O
of
CD
p
DESCRIPTION
2
<
0
OJ p
m O
a Q
CONSTRUCTION
No recovery.
BOTTOM ASH, black, dry, loose, mostly fine to
medium sand, poorly graded with some small gravel.
5
No recovery.
FLY ASH, dark gray, wet, silt.
BOTTOM ASH, medium grained, loose, dry, mostly fine
10
to coarse sand with some small gravel.
No recovery.
Hole colla se material.
_
FLY ASH, dark ra , dry, mostlysilt, few fine sand.
Same as 8.6'.
FLY ASH, darkgray,moist, mostlysilt, few clay.
15
Grout
BOTTOM ASH, medium gray, mostly fine sand, moist,
lile silt.
^i, c
20
TTOM ASH, light to medium gray with tan and
tVb�rown,dry, mostly fine to coarse sand with gravel
ces.2"
Sch. 40 threaded PVC
riser
Y ASH, ra , wet, mostIv silt, few fine sand.
BOTTOM ASH, light to medium gray, moist, mosjto
to coarse sand, few silt.
FLY ASH, dark gray, saturated, mostly silt, few fi
coarse sand.
BOTTOM ASH, light green/gray, medium to coarse
sand, moist, loose.
25
FLY ASH, medium to dark gray, mostly silt, moist,
some fine sand.
BOTTOM ASH same as 21.3 ft.
FLY ASH, same as 23.3 ft.
BOTTOM ASH same as 21.3 ft.
FLY ASH, same as 23.3 ft.
BOTTOM ASH, gray, loose, fine to coarse sand, mois
with small lens of silt and ravel 25.6-25.8 ft. .
30
Interbedded FLY and BOTTOM ASH.
FLY ASH, dark gray, wet/saturated, silt.
�— Bentonite seal
35
Interlayered and interbedded FLY ASH and BOTTOM
ASH layers, recovery only a few inches thick.
—Sand Pack
2" pre -packed well screen
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-03
PROJECT NO: 1026.105
STARTED: 5/18/15 COMPLETED: 5/19/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012714.21 EASTING: 2030856.72
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 497.34 ft M.P. ELEV: 500.17 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 40.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
OJ
w
Q
p
DESCRIPTION
o
p
a Q
CONSTRUCTION
p
w
CD
m0
45
50
55
60
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lina 29601
Greenvlle, South CaroTerra
Phone:l864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-03S
PROJECT NO: 1026.105
STARTED: 5/20/15 COMPLETED: 5/20/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012718.52 EASTING: 2030858.24
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 497.33 ft M.P. ELEV: 500.30 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 68.0 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
WQ
p
U
of O
CD
DESCRIPTION
0
O
Jp
m0
a n
CONSTRUCTION
No recovery.
BOTTOM ASH, black, dry, loose, mostly fine to
medium sand, poorly graded with some small gravel.
5
No recovery.
FLY ASH, dark gray, wet, silt.
BOTTOM ASH, medium grained, loose, dry, mostly fine
10
to coarse sand with some small gravel.
No recovery.
Hole collapse material.
FLY ASH, dark gray, dry, most) silt, few fine sand.
Same as 8.6 ft.
FLY ASH, dark gray,moist, mostly silt, few clay.
15
BOTTOM ASH, medium gray, mostly fine sand, moist,
little silt.
BOTTOM ASH, light to medium gray with tan and
brown, dry, mostly fine to coarse sand with gravel
20
ieces.
FLY ASH, ra , wet, mostIv silt, few fine sand.
BOTTOM ASH, light to medium gray, moist, mostlIto
to coarse sand, few silt.
FLY ASH, dark gray, saturated, mostly silt, few fin
coarse sand.
Grout
BOTTOM ASH, light green/gray, medium to coarse
sand, moist, loose.
25
FLY ASH, medium to dark gray, mostly silt, moist,
some fine sand.
BOTTOM ASH same as 21.3 ft.
FLY ASH, same as 23.3 ft.
BOTTOM ASH same as 21.3 ft.
FLY ASH, same as 23.3 ft.
BOTTOM ASH, gray, loose, fine to coarse sand, mois
with small lens of silt and ravel 25.6-25.8 ft. .
30
2" Sch. 40 threaded PVC
riser
Interbedded FLY and BOTTOM ASH.
FLY ASH, dark gray, wet/saturated, silt.
35
Interlayered and interbedded FLY ASH and BOTTOM
ASH layers, recovery only a few inches thick.
CLIENT: Duke Energy Progress, LLC.
ra
48 Rver Street, Suite 220 PROJECT LOCATION: Roxboro, NC
148 River
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-03S
PROJECT NO: 1026.105
STARTED: 5/20/15 COMPLETED: 5/20/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012718.52 EASTING: 2030858.24
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 497.33 ft M.P. ELEV: 500.30 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 68.0 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
a
WW
U
o
<
U
DESCRIPTION
o
Q
U
O oi
W `�
p z
m O
U
o f
a n
WELL
CONSTRUCTION
SC
SAND, tan to gray, medium to coarse sand with fine
sand and silt, few small gravel, moist.
MIL
SILT, medium to dark gray, mostly silt, some fine sand,
saturated.
45
SP
SP
�_MLJ
SAND, silty, greenish brown (2.5 YR 5/2), little clay,
moist, some roots/organic matter.
SAND, silty, light yellowish brown )2.5 YR, 6/4), some
clay, moist, low plasticity.
CLAY, silty, yellowish red (5 YR 5/6), moist, medium
plasticity.
Bentonite seal
Yellowish red (5 YR 5/6) clay with little silt. From
47.4-48 ft. (SAPROLITE)
MIL
SILT, loose, strong brown, (7.5 YR 5/6), moist, some
sand.
50
MIL
SILT, yellowish brown, (10 YR, 5/8), medium dense,
moist, trace fine sand.
55
—Sand Pack
2" pre packed well screen
MIL
SILT, reddish brown, (5 YR, 5/4), most, trace fine sand,
mottled. (SAPROLITE)
MIL
SILT, yellowish brown, (10 YR, 5/8), moist, trace fine
sand, thinly bedded. (SAPROLITE)
SM
SAND, brown, (7.5 YR, 5/4), loose, moist, little clay.
(SAPROLITE)
60
MIL
SILT, dense, brown, (7.5 YR, 5/4) moist, fine sand,
iron and manganese staining, infrequent relic texture.
(SAPROLITE)
65
MIL
Same as 60.5-65 ft. except dry, more relict structure,
SAPROLITE/PARTIALLY WEATHERED ROCK,
contact at 68 ft.
Borning terminated at 68 ft. Bentonite added to boring
from 61 to 68 ft. to facilitate well construction.
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
Terra
Phone:Greenvl864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-04
PROJECT NO: 1026.105
STARTED: 5/30/15 COMPLETED: 5/30/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012345.36 EASTING: 2030478.85
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 488.76 ft M.P. ELEV: 491.44 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 60.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
ww
U
o 0
<
U)
DESCRIPTION
a
Q
O oi
w
p z
in 0
o 0. f
a 0.
WELL
CONSTRUCTION
No recovery, BOTTOM ASH on surface.
FLY ASH (GLEY1 2.5/N), black, dry, dense, mostly fine
sand, few clay.
SP
SAND, sharp contact, grey, (10 YR 5/1), moist,
moderately dense, mostly fine to coarse, poorly graded
5
sand, little silt/clay.
No recovery.
BOTTOM ASH, same as above, except saturated at 8
ft.
10
BOTTOM ASH, same as above except last six inches
has small gravel sized pieces of rock mixed in.
FLY ASH, (GLEY 5/N), saturated, dense to moderately
dense, interlayered zones (1-4 in.) thick of poorly
sorted sand, mostly fine sand, little silt.
15
No recovery.
20
2" Sch. 40 threaded PVC
BOTTOM ASH, same as 10-11.8 ft., saturated from
20-22.1 ft.
riser
Grout
FLY ASH, gray, loose, saturated/soupy, mostly fine
sand, little silt, "salt and pepper" color/appearance.
25
_.
No recovery.
30
FLY ASH, same as 15 ft., very saturated/soupy,
alternating layers of fine sand and silt, "salt and
pepper" appearance.
35
.
FLY ASH, same as above.
CLIENT: Duke Energy Progress, LLC.
ra
48 Rver Street, Suite 220 PROJECT LOCATION: Roxboro, NC
148 River
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-04
PROJECT NO: 1026.105
STARTED: 5/30/15 COMPLETED: 5/30/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012345.36 EASTING: 2030478.85
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 488.76 ft M.P. ELEV: 491.44 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 60.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
Of
CD
Q�
mO
FLY ASH, same as above.
�—Bentonite seal
45
No recovery.
FLY ASH, same as 35 ft.
Sand Pack
50
2" pre packed well screen
FLY ASH, same as 35 ft.
55
No recovery.
ML
SILT/PARTIALLY WEATHERED ROCK, (2.5 YR 4/2),
-
CL
dark grayish brown, saturated, dense, mostly silt with
clay, little coarse sand grading down to rock fragments
in last 8 in. of recove sa rolite
60
Boring terminated at 60 ft. Bentonite added to boring
from 54 to 60 ft. to facilitate well construction.
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
Terra
Phone:Greenvl864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-04BR
PROJECT NO: 1026.105
STARTED: 5/27/15 COMPLETED: 6/4/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012348.07 EASTING: 2030473.02
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 488.62 ft M.P. ELEV: 491.61 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 108.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a o
w
U
o 0
U
DESCRIPTION
a
U
O
oip
w
m O
U
a
WELL
CONSTRUCTION
No recovery, BOTTOM ASH on surface.
FLY ASH (GLEY1 2.5/N), black, dry, dense, mostly fine
sand, few clay.
SP
SAND, sharp contact, grey, (10 YR 5/1), moist,
moderately dense, mostly fine to coarse, poorly graded
5
sand, little silt/clay.
No recovery.
BOTTOM ASH, same as above, except saturated at 8
ft.
10
BOTTOM ASH, same as above except last six inches
has small gravel sized pieces of rock mixed in.
FLY ASH, (GLEY 5/N), saturated, dense to moderately
dense, interlayered zones (1-4 in.) thick of poorly
sorted sand, mostly fine sand, little silt.
15
No recovery.
20
.
BOTTOM ASH, same as 10-11.8 ft., saturated from
20-22.1 ft.
FLY ASH, gray, loose, saturated/soupy, mostly fine
sand, little silt, "salt and pepper" color/appearance.
25
'
No recovery.
30
6" PVC surface casing
2" Sch. 40 threaded PVC
riser
FLY ASH, same as 15 ft., very saturated/soupy,
alternating layers of fine sand and silt, "salt and
pepper" appearance.
35
FLY ASH, same as above.
CLIENT: Duke Energy Progress, LLC.
ra
48 Rver Street, Suite 220 PROJECT LOCATION: Roxboro, NC
148 River
lina 29601
Greenvlle, South CaroTerra
Phone:l864 421 9999 PAGE 1 OF 3

PROJECT: Mayo Station
WELL / BORING NO: ABMW-04BR
PROJECT NO: 1026.105
STARTED: 5/27/15 COMPLETED: 6/4/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012348.07 EASTING: 2030473.02
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 488.62 ft M.P. ELEV: 491.61 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 108.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
Of
CD
0�
m0
FLY ASH, same as above.
Grout
45
No recovery.
FLY ASH, same as 35 ft.
50
FLY ASH, same as 35 ft.
55
SAPROLITE, no recovery, washed out from water
added to stabilize borehole.
60
PARTIALLY WEATHERED ROCK, broken
rock/fragments of GNEISS, quartzite, schistose rock
with abundant iron staining.
'
IFI' /1\,
PARTIALLY WEATHERED ROCK/QUARTZITE
GNEISS and SCHIST, rock fragments with abundant
stainin
65
Hard, fresh, medium grained GRANITIC GNEISS, no
joints, a few fresh breaks at foliation planes.
BEDROCK
Hard, medium, gray -green with white -tan,
_
medium -coarse grained GRANITE to GRANITIC
-
GNEISS, moderate weathering evident by rounded
- `
edges and some healed fractures, some small gravel
sized quartzite, and few medium pyrite crystals
70
throughout.
-
Very hard, fresh, coarse grained GRANITIC GNEISS,
-
no fractures or joints noted, no staining or
mineralization.
75
Hard, fresh, medium grained GRANITIC GNEISS, no
fractures orjoints noted, some breaks along cleavage,
no staining noted.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 2 OF 3

PROJECT: Mayo Station
WELL / BORING NO: ABMW-04BR
PROJECT NO: 1026.105
STARTED: 5/27/15 COMPLETED: 6/4/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012348.07 EASTING: 2030473.02
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 488.62 ft M.P. ELEV: 491.61 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 108.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
p
DESCRIPTION
p
a Q
CONSTRUCTION
p
X
(D
Q�
m0
Hard, fresh, medium grained GRANITIC GNEISS, no
fractures orjoints noted, some breaks along cleavage,
- -
no staining noted. (continued)
85
Calcite - healed joint at 77 ft., quartzite veins (1/2 in.)
from 80-80.5 ft., light olive-green mineralization from
86.5-87 ft., moderately dipping joints from 79.2-79.4 ft.,
79.5-79.6 ft.,80.7-81.0 ft., and 82.5 ft.
90
Low to moderate dipping joints at 91.7, 93.5, and 97.8
Bentonite seal
ft., moderate to high angle joints at 94.8-95.1,
95.3-95.6, and 96.4-96.7 ft., and vertical joints at
95.9-96.3 ft., vertical joint healed from 89-90.5 ft.
95
100
-
Moderately fresh, hard, medium gray -green, GRANITIC
_-
GNEISS with secondary mineralization of calcite in
an Pack
-
healed joints at 100.5-101 ft., and sub horizontal, olive
- \
green secondary mineralization throughout 99.5-101.3
ft., pyrite throughout.
105
110
115
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 3 OF 3

PROJECT: Mayo Station
WELL / BORING NO: ABMW-04D
PROJECT NO: 1026.105
STARTED: 5/30/15 COMPLETED: 5/31/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012350.06 EASTING: 2030467.97
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 488.68 ft M.P. ELEV: 491.50 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 64.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a o
w
U
o 0
U
DESCRIPTION
a
U
O
oip
w
m O
U
a
WELL
CONSTRUCTION
No recovery, BOTTOM ASH on surface.
Nk
FLY ASH (GLEY1 2.5/N), black, dry, dense, mostly fine
sand, few clay.
SP
SAND, sharp contact, grey, (10 YR 5/1), moist,
moderately dense, mostly fine to coarse, poorly graded
ox
5
sand, little silt/clay.
No recovery.
BOTTOM ASH, same as above, except saturated at 8
ft.
10
BOTTOM ASH, same as above except last six inches
has small gravel sized pieces of rock mixed in.
FLY ASH, (GLEY 5/N), saturated, dense to moderately
dense, interlayered zones (1-4 in.) thick of poorly
sorted sand, mostly fine sand, little silt.
15
No recovery.
20
.
BOTTOM ASH, same as 10-11.8 ft., saturated from
20-22.1 ft.
FLY ASH, gray, loose, saturated/soupy, mostly fine
sand, little silt, "salt and pepper" color/appearance.
Grout
25
-
'
rx
No recovery.
6" PVC surface casing
2" Sch. 40 threaded PVC
riser
30
,.
FLY ASH, same as 15 ft., very saturated/soupy,
alternating layers of fine sand and silt, "salt and
pepper" appearance.
35
FLY ASH, same as above.
CLIENT: Duke Energy Progress, LLC.
ra
48 Rver Street, Suite 220 PROJECT LOCATION: Roxboro, NC
148 River
Greenvlle, South Carolina 29601
,synTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: ABMW-04D
PROJECT NO: 1026.105
STARTED: 5/30/15 COMPLETED: 5/31/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1012350.06 EASTING: 2030467.97
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 488.68 ft M.P. ELEV: 491.50 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 64.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
=c7
U)
a
O^
o
�z
OJ
p E
WELL
w
Q 0
p
DESCRIPTION
U
p
a Q
CONSTRUCTION
p
�
CD
�V
m0
FLY ASH, same as above.
45
No recovery.
FLY ASH, same as 35 ft.
50
Bentonite seal
FLY ASH, same as 35 ft.
55
SAPROLITE, no recovery, washed out from water
added to stabilize borehole.
2" pre -packed well screen
—Sand Pack
60
PARTIALLY WEATHERED ROCK/QUARTZITE
GNEISS and SCHIST, rock fragments with abundant
staining.
-
BEDROCK, sharp contact at 62.5 ft. Hard, fresh,
medium grained GRANITIC GNEISS. No joints
observed, a few fresh breaks along foliation planes.
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-03BR
PROJECT NO: 1026.105
STARTED: 2/6/15 COMPLETED: 2/6/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015654.41 EASTING: 2031278.02
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 435.58 ft M.P. ELEV: 438.37 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 77.0 ft BGS
NOTES:
LOGGED BY: B. Wilker CHECKED BY: J. Wylie
W
p
U
0-
Q O
o
0
0
p
DESCRIPTION
a
<
O^
U o
WV
0 Z
OJ p
m0
0 E
a Q
WELL
CONSTRUCTION
SAND, moist, low -medium plasticity, cohesive, massive
with granular secondary soil structures, fine -coarse
sand in silty clay matrix, slight mottling, light yellowish
CL
MIL
brown, 10 YR 4/5 , some organic material resent.
SAND/SILT moist, low plasticity, light yellowish brown
(10 YR 6/4), matrix with mottling, 30% light olive gray
(5Y 6/2), <10% strong brown (7.5 YR 5/6), dense
5
mottling.
10
MLS
SANDY SILT, loose, yellowish brown (10 YR 5/4),
dry -moist, non plastic, non cohesive with few
non -uniform fine to coarse sand. (SAPROLITE)
15
SILTY SAND, greenish -brown (2.5 YR 5/2), 70%,
20
SM
medium -coarse grained, wet, non plastic, non
cohesive, medium -coarse gravel (saprolite) inclusions,
little non -uniform coarse gravel saprolite, some
pulverized saprolite.
2" Sch. 40 threaded PVC
riser
CL
SANDY CLAY, light brownish gray (2.5 YR 6/2),
medium -low plasticity, cohesive, massive with few
non -uniform coarse sand.
-
Highly weathered partially weathered rock, pulverized
by sonic rig vibration, significant iron staining.
Partially weathered rock, brownish black/dark brown,
25
phyllitic structure present.
-
Same as above, with more severe weathering, argillic
(clay -structure) from weathering.
_
Same as above mixed with silty clay (5Y 4/1), dark
30
gray, medium -low plasticity, cohesive, massive.
Grout
Hard, dark gray, fine grained PHYLLITE, some tight
smooth joints with iron staining, very thin, low angle
foliation.
Hard, slight -very slight weathering, GRANITIC
35
_0
GNEISS,light gray, open, smooth, moderately dipping
high angle joints. Fractures 33.25 ft. high angle
-
fracture, 35.2-35.5 ft. moderately dipping fracture,
_
35.7-35.9 ft. moderately dipping fracture. Contact at 36
ft. with quartzite vein with iron staining in very thin
_ -
veins. 36-41 ft. moderately dipping to high angle joints
with iron staining present, light green mineralization
_
(<5%) in granite (chlorite?).
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-03BR
PROJECT NO: 1026.105
STARTED: 2/6/15 COMPLETED: 2/6/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015654.41 EASTING: 2031278.02
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 435.58 ft M.P. ELEV: 438.37 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 77.0 ft BGS
NOTES:
LOGGED BY: B. Wilker CHECKED BY: J. Wylie
U
O
O
WELL
W
p
DESCRIPTION
00-
Jp
CONSTRUCTION
p
C�
m0
-
Hard, very slightly weathered, light gray GRANITIC
GNEISS, open, steeply dipping joints, mineralization on
45
joint surfaces observed.
50
y
-%
Soft zone —47-51 ft., hard, very slightly weathered, light
gray, GRANITE, open, steeply dipping.
55
60
_
Hard, very slightly weathered, GRANITIC GNEISS, with
-
schistose layers (infrequent), low angle foliation,
- `
quantize vein 65-65.5', infrequent pyrite crystals.
�— Bentonite seal
65
-
—Sand Pack
70
Hard, very slight weathering, light to dark gray, medium
2" pre packed well screen
-
grained GRANITIC GNEISS, with phyllitic
_\
foliation/layers, mostly tight, few open, close shallow
--
joints.
75
-
Boring terminated at 77 ft. Bentonite added from 75.1
to 77 ft. to facilitate well installation.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-05BR
PROJECT NO: 1026.105
STARTED: 1/29/15 COMPLETED: 1/29/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015146.3 EASTING: 2029179.66
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 508.74 ft M.P. ELEV: 511.40 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 67.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
WW
U
o 0
<
U
U)
DESCRIPTION
a
Q
U
O oi
W `�
p z
m 0
U
o 0. f
a 0.
WELL
CONSTRUCTION
CL
SILTY CLAY, dry, few sand.
Very weak (brittle), wet, very pale brown (10 YR 7/4),
yellowish red (5 YR 4/6). black (5 YR 2.5/1), platy,
schistose texture, intensely foliated, moderately -highly
-
decom osed, PARTIALLY WEATHERED ROCK.
5
-
Partially weathered rock.
10
Hard GNEISS, medium -medium severe weathering,
_ -
white/light colored minerals, dark black, heavily
15
weathered, preferential weathering along mica foliation,
heavily fractured, closely spaces, mostly smooth, iron
staining present, some tight, some open, steep -vertical
joints.
20
Gradational change from severe to slight weathering.
25
_ - -
- -
Grout
-'
Hard, slight -moderate weathering, gray, medium to
2" Sch. 40 threaded PVC
coarse grained GRANITIC GNEISS with trace of green
riser
mineralization, very close to close, mostly horizontal to
-
low angle, rough, open joints, highly fractured, joints
are iron stained, thinly foliated.
30
Same as above, except very slight weathering.
Same as above, except unfractured.
No recovery.
35
GRANITIC GNEISS except vertical steeply dipping
-
_\
fractures from 39.5-42 ft., rough open, close joints,
moderately fractured with iron staining present in
fractures.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-05BR
PROJECT NO: 1026.105
STARTED: 1/29/15 COMPLETED: 1/29/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015146.3 EASTING: 2029179.66
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 508.74 ft M.P. ELEV: 511.40 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 67.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
WW
U
<
a
Oa
W
WELLpDESCRIPTION ION
CONSTRUCT
Same as above, except thin to very thin vertical and
sub vertical healed fractures present.
Sharp contact at 43.5 ft., medium hard, very slight
weathering, dark gray/black, fine grained, PHYLLITE,
45
unfractured except some along foliation planes,
foliation is very thin and moderately dipping.
44.5 ft. Quartzite and calcite filled vein with possible
rite inclusions. 45.3 ft. GRANITIC GNEISS intrusio .
Hard, very slight weathering, very light gray, fine
grained PHYLLITE, unfractured, intensely foliated with
very thin, horizontal to low angle foliation. Sharp
50
contact at 51.5 ft.
Hard, gray -green, fresh, very fine grained PHYLLITE,
mainly biotite possibly altering to chlorite?. Sub -vertical
fracture at 53 ft. with secondary mineralization (pale
pink mineral), vertical healed fracture possibly fille
with calcite.
Bentonite seal
-
=
55
-
Sharp contact, hard, light gray, slight weathering,
fine -medium grained, BIOTITE GNEISS with mylonitic
texture, rough, very close, joints occuring mainly along
foliation plane, thinly foliation with low angles to
horizontal orientation.
Same as above, except pale light green mineralization
observed.
Same as above, vertical and subvertical fractures with
iron staining along joint places observed at 57 ft. (5 in.
fracture), 59 ft. (6 in. fracture), vertical fractures
60
\ \
_
—Sand Pack
2" pre -packed well screen
_
-
- `
observed at 60 ft. (7 in. fracture), 61 ft. (11 in.
fracture), 62-63.5 ft. fracture), 64.5 ft. (4 in. fracture),
66 ft. (5.3 in. fracture). At 59.8 ft. low angle healed
65
_-
-
fracture, 61.5 ft. feldspar inclusion (3/8 in. wide, 1.5 in.
long), 65 ft. phyllite inclusion, 62-66 ft. very small (1-2
mm) pyrite inclusions.
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-06BR
PROJECT NO: 1026.105
STARTED: 4/13/15 COMPLETED: 4/13/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014756.09 EASTING: 2033040.31
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 461.70 ft M.P. ELEV: 463.99 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 100.0 ft BGS
NOTES:
LOGGED BY: K. Webb CHECKED BY: J. Wylie
U
O
O
WELL
WQ
p
DESCRIPTION
0
Jp
CONSTRUCTION
p
of
(D
m0
5-
MIL
SILT, tan to orange brown, fine grained silt.
(SAPROLITE)
10
2" Sch. 40 threaded PVC
riser
Same as above, moist, more clay. (SAPROLITE)
15
_
PARTIALLY WEATHERED ROCK, dry, medium
tan -gray silt.
Severely weathered, GRANITIC GNEISS ? with iron
- -
staining along foliations.
20
-
Weathered, coarse grained GRANITE.
25
-
Same as above.
'
30
-
Grades from felsic and coarse grained to more mafic
and fine grained GRANITE. Grades to 32-35 ft. dark
gray, foliated PHYLLITIC MYLONITE, vugs and pits
common, pyrite present.
35
-
GRANITE, mafic, with feldspar near 35 ft. Grades to
-'
35-39 ft., GRANITIC GNEISS with many vertical to
horizontal fractures most with iron staining.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s)mTerra Phone:l864 421 9999 PAGE 1 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-06BR
PROJECT NO: 1026.105
STARTED: 4/13/15 COMPLETED: 4/13/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014756.09 EASTING: 2033040.31
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 461.70 ft M.P. ELEV: 463.99 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 100.0 ft BGS
NOTES:
LOGGED BY: K. Webb CHECKED BY: J. Wylie
U
O
O
WELL
WQ
p
DESCRIPTION
0
Jp
CONSTRUCTION
p
X
C�
m0
Grades to 39-45 ft. mylonitic GRANITIC GNEISS (more
Grout
mafic, less joints).
45
_ -
Dense, fine grained dark gray matrix, same as above.
At 48 ft. mylonitic piece with quartz and calcite fracture
-
filling pyrite, heavy (manganese), black staining on
calcite.
50
-
Very dense, greenish gray, fine grained GRANITE with
pink and white quartz lenses and linear fractures, no
noticeable weathering.
55
-
-
Same as above, fine grained dark gray
=,
GNEISS/GRANITE with pyrite along planes. Gray
crumbled mylonitic GNEISS.
60
-
Same as above, fine grained dark gray GNEISS, with
-'
fine pyrite flakes. Black, PHYLLITE with calcite along
-'
some foliation planes.
65
No recovery.
70
"=
Medium -dark gray PHYLLITE with white quartz lenses.
mylonitic.
75
Same as above.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 2 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-06BR
PROJECT NO: 1026.105
STARTED: 4/13/15 COMPLETED: 4/13/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014756.09 EASTING: 2033040.31
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 461.70 ft M.P. ELEV: 463.99 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 100.0 ft BGS
NOTES:
LOGGED BY: K. Webb CHECKED BY: J. Wylie
a
U
o
a
O oi
p z
o f
WELL
WW
<
DESCRIPTION
Q
W `�
m O
o n
CONSTRUCTION
U
U
U
Same as above. PEGMATITE zone at 80 ft., pink
recrystalized quartzite with 1 in. band of
GREYWACKE, then into mylonitic PHYLLITE.
85
�— Bentonite seal
Medium dark gray to green PHYLLITE.
90
Same as above, PHYLLITE.
an Pack
95
2" pre -packed well screen
-
-'
White quartzite and felsic GRANITIC GNEISS.
100
105
110
115
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 3 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-U%BR
PROJECT NO: 1026.105
STARTED: 4/23/15 COMPLETED: 4/23/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014311.86 EASTING: 2034175.46
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 451.21 ft M.P. ELEV: 453.50 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 77.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
wo
U
a 0
<
U
U)
DESCRIPTION
d
Q
U
O oi
w `�
p z
m 0
U
o f
a n
WELL
CONSTRUCTION
SILT, brownish yellow (10 YR 6/6), dry, mostly silt,
some rock pieces (gravel size), grades to light gray, (10
YR 7/2), dry, mostly silt with rock pieces (up to 3 in.
MIL
long) at 3 ft. (SAPROLITE)
5
Hard, very severely weathered gneissic MYLONITE
abundant breaks along foliation planes from 5-7 ft.
(PARTIALLY WEATHERED ROCK)
10
-
PARTIALLY WEATHERED ROCK, hard (with soft
=
zones), very severely weathered fine grained
GRANITIC/GNEISS MYLONITE. Abundant
breaks/joints mostly horizontal foliation planes,
=
abundant iron staining.
15
20
=
Same as above, PARTIALLY WEATHERED ROCK, ,
some zones are slightly more felsic, but all is mylonitic
and very weathered.
25
30
Grout
_
Hard, fresh to slightly weathered, MYLONITIC
-
GNEISS. Bottom 2 ft. of run (35-37 ft.) has abundant
fractures in multiple orientations.
35
-
Same as 35-37 ft., hard, fresh, felsic.
2" Sch. 40 threaded PVC
riser
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-U%BR
PROJECT NO: 1026.105
STARTED: 4/23/15 COMPLETED: 4/23/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014311.86 EASTING: 2034175.46
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 451.21 ft M.P. ELEV: 453.50 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 77.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
WW
U
o
<
U
DESCRIPTION
a
Q
U
O oi
W `�
p z
m O
U
o f
o n
WELL
CONSTRUCTION
Hard, fresh, aphanitic, PHYLLITE when wet, dark
grayish green (5G 4/1), massive, some dissolution
evident at 38.2 ft., tight joints with iron staining from
38.5-39.2 ft., fresh joints 42-44 ft., mylonite inclusions
at 39.8 and 40.1-41.1 ft., sharp contact GNEISS with
QUARTZITE at 44.7 ft., MYLONITIC PHYLLITE below
45
44.9 ft., pyrite. continued
Moderately hard to hard, very slightly weathering to
fresh, medium to medium dark gray, mylonitic
_
PHYLLITE, little pyrite, grades to
-
Hard, fresh, medium dark gray, mafic GNEISS (few
50
feldspar).
Sharp, moderate dipping contact from mafic rich
granitoid-quartzite vein .25 in. with GRANITIC GNEIS
zone of —1.5 in., sharp moderate dipping contact with
dark gray AMPHIBOLITE.
Hard, fresh, dusky green (5G 3/2), to grayish
blue-green (56 5/2), medium to coarse grained,
55
GREENSCHIST, ? moderate dipping to high angle,
tight joints along foliation at 49.8-51.5, 51.5-51.7,
52.5-52.8, 54.4-54.8, 56.3-56.9 ft., and vertical tight
i
joint at 55.5-56.1 ft., few pyrite some healed joints with
calcite throughout.
60
Same as above, GREENSCHIST ? with a dark gray to
black zone of more aphanitic material, AMPHIBOLITE
? from 59.9-60.7 ft., high angle tight joints along planes
of foliation at 57.6-58, 57.7-58.2, 58.3-58.6 ft., foliation
/
goes from high angle to low angle from 62-64 ft..
Bentonite seal
65
-
_
Hard, fresh, GRANITIC GNEISS (65.7-67 ft.), hard,
moderately weathered to fresh, medium -dark gray,
aphanitic with quartzite inclusion, tight foliation,
-
AMPHIBOLITE, some iron staining, pyrite veins and
crystals.
Same as 65.7-67 ft.
_-,
52''
70
>`—Sand Pack
Sharp contact at a high dipping angle with felsic
GRANITE to granitoid GNEISS (71.3'), quartzite vein
1.5" thick.
2" pre -packed well screen
_
Very hard, slightly weathered to fresh, light gray -white,
felsitic granite to granitoid GNEISS, medium grained
-
with tight to open, rough, manganese stained joints,
75
-
vertical joint 70-70.4 ft., horizontal to high angle joint
70.6, 70.9, and 71.7-72 ft., grades to hard, fresh,
-
medium dark gray PHYLLITE with open smooth to
rough horizontal to high angle joints.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-07D
PROJECT NO: 1026.105
STARTED: 4/25/15 COMPLETED: 4/25/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014307.45 EASTING: 2034169.17
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 451.17 ft M.P. ELEV: 453.94 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 32.5 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
a
wo
U
a 0
<
U
U)
DESCRIPTION
d
Q
U
O oi
w `�
p z
m 0
U
o f
a n
WELL
CONSTRUCTION
SILT, brownish yellow (10 YR 6/6), dry, mostly silt,
some rock pieces (gravel size), grades to light gray, (10
YR 7/2), dry, mostly silt with rock pieces (up to 3 in.
MIL
long) at 3 ft. (SAPROLITE)
5
Hard, very severely weathered gneissic MYLONITE,
abundant breaks along foliation planes from 5-7 ft.
(PARTIALLY WEATHERED ROCK)
2" Sch. 40 threaded PVC
riser
-
Grout
10
-
PARTIALLY WEATHERED ROCK, hard (with soft
=
zones), very severely weathered fine grained
GRANITIC/GNEISS MYLONITE. Abundant
breaks/joints mostly horizontal foliation planes,
=
abundant iron staining.
15
�— Bentonite seal
20
-
=
Same as above, PARTIALLY WEATHERED ROCK,
some zones are slightly more felsic, but all is mylonitic
and very weathered.
25
Sand Pack
2" pre -packed well screen
30
35
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: MW-08BR
PROJECT NO: 1026.105
STARTED: 2/11/15 COMPLETED: 2/14/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014440.25 EASTING: 2034593.99
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 467.27 ft M.P. ELEV: 466.99 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 86.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
w
p
U
Q O
�
U)
p
DESCRIPTION
�
p
m0
a Q
WELL
CONSTRUCTION
I
MIL
SILT, brown (10 YR 5/3), dry, mostly silt, few fine sand,
fill?.
5
10
SILT, yellowish brown (10 YR 5/4), dry, mostly silt, few
MIL
low plastic clay, few fine to coarse grained sand, road
gravel infrequently noted, fill. 12.5-13 ft. strong brown
(7.5 YR 5/8) dry, silt, few coarse grained sand,
micaceous.
15
ML
SILT, yellowish brown (10 yr 5/4), dry.
MIL
SILT, yellowish red (5 YR 5/6), dry, some clay, mostly
as mica, some relict structure, grades to
20
MIL
SILT, mottled (tan/brown/yellowish brown), dry, some
rock fragments, feldspars weathering to clay (some
clay).
>
6" PVC surface casing
25
ML
SILT, brown (10 YR 4/3), dry, abundant mica, obviously
relict texture. (SAPROLITE)
Grout
�2" Sch. 40 threaded PVC
riser
30
ML
SILT, light yellowish brown (2.5 YR 6/3), moist, little
cla SAPROLITE
PARTIALLY WEATHERED ROCK, highly fractured and
35
=
MHard,
weathered with abundant iron staining, GRANITIC
GNEISS.
`
_
moderately weathered, light gray, fine to medium
grained GRANITIC GNEISS, smooth, mostly open
-
joints with iron and manganese staining, shallow to
high angle joints.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-08BR
PROJECT NO: 1026.105
STARTED: 2/11/15 COMPLETED: 2/14/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014440.25 EASTING: 2034593.99
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 467.27 ft M.P. ELEV: 466.99 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 86.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
=c7
U)
a
O^
o
�z
OJ
p E
WELL
w
Q 0
p
DESCRIPTION
U
p
a Q
CONSTRUCTION
p
�
C�
�V
m0
15
Hard, moderately weathered, light gray, fine to medium
grained GRANITIC GNEISS, smooth, mostly open
_
joints with iron and manganese staining, shallow to
45
high angle joints. (continued)
No recovery.
50
Tan, brown, soft, highly weathered, fine grained MICA
SCHIST, strongly foliated, some close joints present
with manganese black staining.
Hard, moderately weathered, light gray, fine to medium
grained mylonitic GRANITIC GNEISS, open joints with
55
iron staining.
No recovery.
Hard, moderately weathered, light gray, fine to medium
Bentonite seal
grained GRANITIC GNEISS, open joints, shallow to
steeply dipping.
�
Coarse gravel/rock fragments (gneiss/quartzite) with
60
coarse sand intermixed. Grades to
Wet, poorly graded gravel with sand, appears to be
/
zone of fractured and stressed quartzite and parent
—Sand Pack
RX
rock in a coarse sand matrix. Some quartzite is
65
stressed with mylonitic texture indicating structural
2" pre -packed well screen
i
stress/strain.
70
_
Very hard, moderately weathered, white, black, pink
-
GRANITIC GNEISS with quartz vein, some broken
-
fragments, difficult to distinguish joints.
75
No recovery.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lina 29601
synTerra Phone:llle864 421 9999 PAGE 2 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-08BR
PROJECT NO: 1026.105
STARTED: 2/11/15 COMPLETED: 2/14/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014440.25 EASTING: 2034593.99
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 467.27 ft M.P. ELEV: 466.99 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 86.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
of
CD
Q�
m0
"• '' `'
Light gray, very hard, fresh with some small pyrite
crystals, some small pits, several high anglejoints
along bedding planes. Mylonitic
META/ARGILLITE/METAVOLCANIC rock?, fine
grained, a few inclusions of mafic rock, PHYLLITE on
85
some foliation breaks. (continued)
Very hard, fresh, light gray, fine grained to aphanitic
-
MYLONITE.
Boring terminated at 86.5 ft. Bentonite added to boring
from 67.7 to 86.5 ft. to facilitate well construction.
90
95
100
105
110
115
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 3 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-08D
PROJECT NO: 1026.105
STARTED: 2/14/15 COMPLETED: 2/14/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014443.85 EASTING: 2034599.43
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 467.04 ft M.P. ELEV: 466.89 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 41.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
w
p
U
Q O
�
U)
p
DESCRIPTION
�
p
m0
a Q
WELL
CONSTRUCTION
MIL
SILT, brown (10 YR 5/3), dry, mostly silt, few fine sand,
fill?.
5
10
SILT, yellowish brown (10 YR 5/4), dry, mostly silt, few
MIL
low plastic clay, few fine to coarse grained sand, road
gravel infrequently noted, fill. 12.5-13 ft. strong brown
(7.5 YR 5/8) dry, silt, few coarse grained sand,
micaceous.
2" Sch. 40 threaded PVC
15
riser
Grout
MIL
SILT, yellowish brown (10 yr 5/4), dry.
MIL
SILT, yellowish red (5 YR 5/6), dry, some clay, mostly
as mica, some relict structure, grades to
20
SILT, mottled (tan/brown/yellowish brown), dry, some
MIL
rock fragments, feldspars weathering to clay (some
clay).
25
ML
SILT, brown (10 YR 4/3), dry, abundant mica, obviously
relict texture. (SAPROLITE)
30—
Bentonite seal
MIL
SILT, light yellowish brown (2.5 YR 6/3), moist, little
clay. SAPROLITE
PARTIALLY WEATHERED ROCK, highly fractured and
35
=
weathered with abundant iron staining, GRANITIC
GNEISS.
Sand Pack
2" pre -packed well screen
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: MW-08S
PROJECT NO: 1026.105
STARTED: 2/16/15 COMPLETED: 2/16/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014446.92 EASTING: 2034603.67
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 466.94 ft M.P. ELEV: 466.87 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 30.1 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
p
DESCRIPTION
p
a Q
CONSTRUCTION
p
�
�
m0
ML
SILT, brown (10 YR 5/3), dry, mostly silt, few fine sand,
fill?.
5
Grout
10
SILT, yellowish brown (10 YR 5/4), dry, mostly silt, few
low plastic clay, few fine to coarse grained sand, road
ML
gravel infrequently noted, fill. 12.5-13 ft. strong brown
(7.5 YR 5/8) dry, silt, few coarse grained sand,
micaceous.
15
2" Sch. 40 threaded PVC
riser
ML
SILT, yellowish brown (10 yr 5/4), dry.
ML
SILT, yellowish red (5 YR 5/6), dry, some clay, mostly
as mica, some relict structure, grades to
20
SILT, mottled (tan/brown/yellowish brown), dry, some—Bentonite
seal
ML
rock fragments, feldspars weathering to clay (some
clay).
25
ML
SILT, brown (10 YR 4/3), dry, abundant mica, obviously
—Sand Pack
relict texture. (SAPROLITE)
2" pre -packed well screen
30
35
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: MW-09BR
PROJECT NO: 1026.105
STARTED: 4/9/15 COMPLETED: 4/11/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1013360.32 EASTING: 2033864.48
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 492.85 ft M.P. ELEV: 495.39 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 66.0 ft BGS
NOTES:
LOGGED BY: R. Graziano CHECKED BY: J. Wylie
Z
WW
U
0
DESCRIPTION
a
Ooi
W
p
m 0
o
faoU)
a 0. 0.
WELL
CONSTRUCTION
TOPSOIL
GNEISS, weak, oxidized iron and manganese staining,
schistose to gneissic, thinly foliated, moderate to highly
decomposed, highly fractured throughout. 1-5' is
pulverized because of lack of water used in sonic
drilling, fractures that are apparent tend to be extremely
narrow to very narrow, rough to smooth joints with
5
some iron and manganese surface staining on
unhealed joints, dry.
_
WR
Partially weathered rock, crumbles in hand, same as
1-4'.
WR
Partially weathered rock to saprolite.
10
Saprolite, clayey.
Competent rock, schistose GNEISS, iron and
- -
manganese staining, thinly foliated.
15
Micaceous saprolite.
WR
Weathered rock, gneissic/schistose, same as 11-14'.
Slightly foliated, GNEISSIC/GRANITE.
20
GNEISSIC/GRANITE, somewhat porous and vuggy,
highly stained.
Grout
-
GNEISSIC/GRANITE, more quartz than 17-19', highly
stained.
2" Sch. 40 threaded PVC
25
-
riser
30
- -
Same as above, few vugs.
Brown, micaceous, broken pieces, soft. (MICA
35
SCHIST
Brown, micaceous, thin black layers. (MICA SCHIST)
Partially weathered rock, similar to 16-20'.
Same as 35-36'.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-09BR
PROJECT NO: 1026.105
STARTED: 4/9/15 COMPLETED: 4/11/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1013360.32 EASTING: 2033864.48
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 492.85 ft M.P. ELEV: 495.39 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 66.0 ft BGS
NOTES:
LOGGED BY: R. Graziano CHECKED BY: J. Wylie
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
Of
CD
Q�
m0
Same as 35-36'. (continued)
Partially weathered rock, some clay/silt, foliated.
�— Bentonite seal
Green, micaceous partially weathered rock, like 42-44',
45
-
fewer with medium to large gravel sized rock
fragments.
50
Competent rock, GRANITIC GNEISS, iron staining and
fractures.
Ix an Pack
2" pre -packed well screen
55
60
Competent rock, granitic gneiss.
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-10BR
PROJECT NO: 1026.105
STARTED: 2/24/15 COMPLETED: 2/24/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1011436.41 EASTING: 2032770.9
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 513.47 ft M.P. ELEV: 513.39 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 65.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
WW
U
<
U
UOo a
W
U
WELLpDESCRIPTION
ION
CONSTRUCT
MIL
SILT, yellowish brown (10 YR 5/6), dry, few fine -coarse
grained sand.
CL
CLAY, mottled, light gray (2.5 YR 7/1), brownish yellow
CH
(10 YR 6/6) 30%, dry, mostly clay, some silt, cohesive
massive structure.
5
LLY WEATHERED ROCK, soft, moderately
iron and manganese staining,
coarse grained, pulverized joints and fracture ,o
�s�evereeathering,
Moderately -severe to severely weathered,
medium -coarse grained with abundant mica, pulverized
-
fractures and joints are unable to classify, iron and
manganese staining, grades to
10
9.5-11.5 ft. GRANITIC GNEISS parent rock,
medium -moderate hard, moderately severe weathering,
medium -coarse grained, pulverized, pieces with visible
joints were smooth with significant staining (iron and
manganese), high angle banding. 11.5-13.5' brown (10
77
YR 4/3), dry, mostly silt, abundant mica, obvious relict
structure. (SAPROLITE)
15
20
"
Grout
25
Hard, slightly weathered, light gray, fine -medium
grained, open joints that are smooth, rough, low -high
_
angle, GRANITIC GNEISS, there was a loss from
_ -
28.5-31 ft., high angle to vertical fractures at 25.5, 27,
33-33.5, and 34-34.5 ft.
30
2" Sch. 40 threaded PVC
riser
35
Same as above, more weathered, iron and manganese
staining in open and rough joints. Vertical fractures at
_
-
41-41.5, 41.5-42.5, and 42.75-43 ft., horizontal
-
fractures along bedding plane at 44 ft. and coarse
gravel with abundant iron and manganese staining from
-
44-45.5 ft.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-10BR
PROJECT NO: 1026.105
STARTED: 2/24/15 COMPLETED: 2/24/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1011436.41 EASTING: 2032770.9
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 513.47 ft M.P. ELEV: 513.39 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 65.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
Of
C�
Q�
m0
Same as above, more weathered, iron and manganese
staining in open and rough joints. Vertical fractures at
_ -
41-41.5, 41.5-42.5, and 42.75-43 ft., horizontal
fractures along bedding plane at 44 ft. and coarse
gravel with abundant iron and manganese staining from
�— Bentonite seal
45
- -
44-45.5 ft. (continued)
-
Hard, moderately severe weathering, medium -coarse
50
_
grained GRANITIC GNEISS, tight -open, smooth to
-
rough joints, iron and manganese staining, coarse
-
gravel sized pieces grading into competent rock,
severe vertical joints throughout.
2" pre -packed well screen
55
—Sand Pack
Same as above.
-''
Hard -very hard, slightly weathered, fine -medium
60
grained, GRANITIC GNEISS, smooth -rough, open
-
joints with iron and manganese staining, some
secondary and mineralization in joints at 65', few pyrite
- " -
in 61.5-65.5', chlorite and epidote found from
-''
64.5-65.5', high angle vertical fractures from 63-63.6,
-"
some high angle fractures from 64-64.5.
65
-
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South lina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-11 BR
PROJECT NO: 1026.105
STARTED: 4/14/15 COMPLETED: 4/16/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1010083.75 EASTING: 2027497.4
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 524.34 ft M.P. ELEV: 527.36 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 95.0 ft BGS
NOTES:
LOGGED BY: K. Webb CHECKED BY: J. Wylie
WQ
p
U
O
of
CD
p
DESCRIPTION
0
O
Jp
m0
WELL
CONSTRUCTION
CL
CLAY, very stiff, medium brown.
CL
CLAY, stiff, medium brown clay to 4', loose medium
brown silt and clay, very damp to 5'.
5
MIL
SILT, stiff to loose, medium brown silt and clay with
rock fragments at 10 ft.
10
2" Sch. 40 threaded PVC
riser
CL
CLAY with sand, layered fine gray clay and medium
brown to gray sand, transitioning from saprolite to
weathered rock, very tight and dry.
15
CL
MIL
CLAY/SILT, dark brown silty clay grading to dark brown
clayey silt.
20
CL
MIL
Same as above.
25
PARTIALLY WEATHERED ROCK, large weathered
_
rock fragments at 25 ft., medium brown -blue gray silt
and clay and rock fragments below, dry.
30
_
Same as above, more dry rock fragments.
35
Dense, stiff, medium gray CLAY from 35-36 ft.
CL
Some medium brown SILT WITH CLAY and rock
fragments from 36-37.5 ft.
Medium gray SILT and rock fragments from 37.5-40 ft.
Grout
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-11 BR
PROJECT NO: 1026.105
STARTED: 4/14/15 COMPLETED: 4/16/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1010083.75 EASTING: 2027497.4
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 524.34 ft M.P. ELEV: 527.36 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 95.0 ft BGS
NOTES:
LOGGED BY: K. Webb CHECKED BY: J. Wylie
a
U
a
Oa oip
WELL
WW
0
<
U
DESCRIPTION
W
m O
n
ION
CONSTRUCT
U
U
U
Same as above, layer of dense stiff medium gray clay
from 40-44', competent rock, dark green PHYLLITE
from 44-45 ft.
45
Dark greenish gray, fine grained GRANITIC GNEISS to
49 ft., vertical fracture at 50 ft.
50
Fresh, very hard, dark green gray, fine -medium grained
GABBRO?/ ANDESITE? with round hornblende?
pieces with pyrite at 55 ft. — 1/2 in. diameter with
-. •:-: \ .I\.:
quartz lens, very hard.
o•:
Same as above, lenses of quartzite.
65
-
Same as above, with quartzite lenses, pyrite, calcite
intrusion and possible epidote 69-71 ft.
70
•::.
Dark gray green, extremely hard, fresh, porphyritic
hornblende ANDESITE or GABBRO with little PYRITE
and OLIVINE in healed joints.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 2 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-11 BR
PROJECT NO: 1026.105
STARTED: 4/14/15 COMPLETED: 4/16/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1010083.75 EASTING: 2027497.4
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 524.34 ft M.P. ELEV: 527.36 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 95.0 ft BGS
NOTES:
LOGGED BY: K. Webb CHECKED BY: J. Wylie
U
O
U)
WELL
w
Q
p
DESCRIPTION
p
0
a Q
CONSTRUCTION
p
Of
CD
Q�
m
en oni a sea
Same as above.
85
�•��
—Sand Pack
2" pre -packed well screen
90
95
100
105
110
115
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
Greenvsy"Terra l864
Phone: [phone] PAGE 3 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-12D
PROJECT NO: 1026.105
STARTED: 4/27/15 COMPLETED: 4/28/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1008654.13 EASTING: 2029191.43
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 588.17 ft M.P. ELEV: 588.02 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 97.5 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
w
p
U
Q O
of
(D
U)
DESCRIPTION
Q�
p
mO
a Q
WELL
CONSTRUCTION
MIL
SILT, dense, red (2.5 YR 4/6) with yellowish brown (10
YR 5/6) mottling, silt, trace clay, dry to massive from
0-2 ft, dense red (2.5 YR 4/6) silt, trace clay.
5
SILT, same as 2-6 ft. from 6-7.5, 7.5-9 ft. same as 0-2
i
10
ft., 9-12.5 ft. dense, mottled 30%, reddish yellow (7.5
MIL
YR 5/6) 30%, strong brown (7.5 YR 5/8) 20%, white
GLEY1 8/N) 15%, red (2.5 YR 4/8) silt, trace fine sand,
saprolite, mottled, ozidized, 12.5-16 ft. same as 9-12.5
ft. with more red (2.5 YR 4/8) and more defined parent
structure. (SAPROLITE)
15
16-20.5 ft. same as 12.5-16 ft., 20.5-25 ft. medium
20
dense to dense, mottled red (2.5 YR 4/6), strong brown
MIL
(7.5
(7.5 YR 5/6), black (10 YR 2/1), white (GLEY1 8/N),
silt, dry thinly bedded to bedded fabric,
micaceous 25-26 ft. medium dense, 90%, red (2.5 YR
4/6), 10% white (GLEY 1 8/N), thinly bedded to
bedded, silt. (SAPROLITE)
25
i
30
26-28.5 ft. same as 20.5-25 ft., with bedded vertical
structure and moist, 28.5-36 ft. medium, dense 40%,
yellowish brown (10 YR 45/6), 20% light gray (2.5 YR
7/1) 10% black (2.5 YR 2.5/1), 30% olive yellow (2.5
YR 6/6) thinly bedded to bedded, silt with trace of fine
2" Sch. 40 threaded PVC
riser
sand and clay. (SAPROLITE)
35
ML
Grout
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-12D
PROJECT NO: 1026.105
STARTED: 4/27/15 COMPLETED: 4/28/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1008654.13 EASTING: 2029191.43
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 588.17 ft M.P. ELEV: 588.02 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 97.5 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
of
(D
Q�
m0
MIL
36-41.5 ft. medium dense to dense, 10% yellow (10 YR
7/8), 15% light olive brown (2.5 YR 5/4), 70% light gray
(5 YR 7/1), 15% yellowish red (5 YR 5/6), moist, low
plasticity, thinly bedded, silt, little clay, 41.5-46 ft.
45
dense, stiff, 40% light olive brown, 15% yellow (2.5 YR
8/6) and (10 YR 7/8), 35% white (10 YR 8/1), 10%
black (10 YR 3/1), silt, moist to dry, thinly bedded.
SAPROLITE continued
50
MIL
Same as 36-41.5 ft. with small gravel sized pieces of
quartz and black (10 YR 2/1), <5%.
55
60
Same as 36-41.5 ft. with medium gray quartzite, small
to medium gravel throughout from 56-60', from 60-66 ft.
MIL
medium dense to loose, soft light gray (10 YR 7/2), silt
with little fine sand, dry, likely some bedded structure
but pulverized due to drilling.
65
MEN/m/l/
Top 7 ft. drilled with water, no recovery, bottom 8 ft.
70
drilled dry, medium dense -dense, medium stiff, very
dark grayish brown (10 YR 3/2), with dark yellowish
brown (10 YR 4/4), silty with little trace clay, platy,
/j
moist, thinly bedded to laminated, with mica prevalent
throughout, MICA SCHIST, highly weathered, light to
medium gray.
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 2 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-12D
PROJECT NO: 1026.105
STARTED: 4/27/15 COMPLETED: 4/28/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1008654.13 EASTING: 2029191.43
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 588.17 ft M.P. ELEV: 588.02 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 97.5 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
Of
C�
Q�
m0
-
76-79 ft. same as 66-78 ft. but dense and dry. 79-83 ft
Bentonite seal
soft to medium hardness, moderate to severe
-
weathering, partially weathered rock, BIOTITE
_
GNEISS, fine to medium grained iron and manganese
staining, joint/fracture locations cannot be determined
-
because most material is pulverized with powder, small
85
to large gravel sized, partially weathered rock, dry,
-
83-84 ft. grades to back to dark MICA SCHIST, 84 86
`
XXXI §R/'�"'
ft. same as 76-79 ft. continued
11
'- -
86-92.5 ft, same as 76-79, 92.5-96 ft. hard, dry,
90
moderate to severely weathered, BIOTITE GNEISS,
-
fine to medium grained, medium gray with iron and
Sand Pack
_
manganese staining, joint/fracture locations
indetermined with medium to large gravel pieces
2" pre -packed well screen
throughout, 96-97.5' ft. same as 92-96 ft.
95
100
105
110
115
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 3 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-12S
PROJECT NO: 1026.105
STARTED: 4/28/15 COMPLETED: 4/28/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1008653.91 EASTING: 2029202.47
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 587.48 ft M.P. ELEV: 587.38 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 56.0 ft BGS
NOTES:
LOGGED BY: J. Mahan CHECKED BY: J. Wylie
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
of
(D
Q�
mO
SILT, dense, red (2.5 YR 4/6) with yellowish brown (10
MIL
YR 5/6) mottling, silt, trace clay, dry to massive from
0-2 ft, dense red (2.5 YR 4/6) silt, trace clay.
5
i
SILT, same as 2-6 ft. from 6-7.5, 7.5-9 ft. same as 0-2
10
ft., 9-12.5 ft. dense, mottled 30%, reddish yellow (7.5
YR 5/6) 30%, strong brown (7.5 YR 5/8) 20%, white
MIL
GLEY1 8/N) 15%, red (2.5 YR 4/8) silt, trace fine sand,
saprolite, mottled, ozidized, 12.5-16 ft. same as 9-12.5
ft. with more red (2.5 YR 4/8) and more defined parent
structure. (SAPROLITE)
15
Grout
16-20.5 ft. same as 12.5-16 ft., 20.5-25 ft. medium
20
dense to dense, mottled red (2.5 YR 4/6), strong brown
(7.5 YR 5/6), black (10 YR 2/1), white (GLEY1 8/N),
MIL
moist, silt, dry thinly bedded to bedded fabric,
micaceous 25-26 ft. medium dense, 90%, red (2.5 YR
4/6), 10% white (GLEY 1 8/N), thinly bedded to
bedded, silt. (SAPROLITE)
25
2" Sch. 40 threaded PVC
riser
i
26-28.5 ft. same as 20.5-25 ft., with bedded vertical
30
structure and moist, 28.5-36 ft. medium, dense 40%,
yellowish brown (10 YR 45/6), 20% light gray (2.5 YR
7/1) 10% black (2.5 YR 2.5/1), 30% olive yellow (2.5
YR 6/6) thinly bedded to bedded, silt with trace of fine
sand and clay. (SAPROLITE)
35
�—
Bentonite seal
MIL
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-12S
PROJECT NO: 1026.105
STARTED: 4/28/15 COMPLETED: 4/28/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1008653.91 EASTING: 2029202.47
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 587.48 ft M.P. ELEV: 587.38 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 56.0 ft BGS
NOTES:
LOGGED BY: J. Mahan CHECKED BY: J. Wylie
U
O
U)
WELL
w
Q
DESCRIPTION
a Q
CONSTRUCTION
p
of
CD
Q�
m0
MIL
36-41.5 ft. medium dense to dense, 10% yellow (10 YR
7/8), 15% light olive brown (2.5 YR 5/4), 70% light gray
(5 YR 7/1), 15% yellowish red (5 YR 5/6), moist, low
plasticity, thinly bedded, silt, little clay, 41.5-46 ft.
Sand Pack
45
dense, stiff, 40% light olive brown, 15% yellow (2.5 YR
2" pre packed well screen
8/6) and (10 YR 7/8), 35% white (10 YR 8/1), 10%
black (10 YR 3/1), silt, moist to dry, thinly bedded.
SAPROLITE continued
50
MIL
Same as 36-41.5 ft. with small gravel sized pieces of
quartz and black (10 YR 2/1), <5%.
55
Boring terminated at 56 ft. Bentonite added from 51 to
56 ft. to facilitate well construction.
60
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-13BR
PROJECT NO: 1026.105
STARTED: 4/15/15 COMPLETED: 4/15/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1013587.37 EASTING: 2027633
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 526.67 ft M.P. ELEV: 528.83 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 107.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
WQ
p
U
O
of
(D
p
DESCRIPTION
0
O
Jp
m0
WELL
CONSTRUCTION
CL
CLAY, moist, yellowish red (5 YR 5/6), mostly low
plastic clay.
MIL
SILT, dry, pale brown (2.5 YR 4/3), mostly micaceous
silt, little fine sand.
5
MIL
Same as 2.5-4' ft., some small crumbling rock, schist
fragments.
10
2" Sch. 40 threaded PVC
riser
MIL
SP
SILT, dry, very pale brown (10 YR 7/4), mostly silt,
some sand.
15
20
ML
Sp
Same as 2-17 ft.
25
30
ML
Sp
Same as 2-17 ft. and 17-27 ft.
35
SP
SAND, grades to moist, light brown (7.5 YR 6/4),
mostly fine to medium sand, some little silt.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-13BR
PROJECT NO: 1026.105
STARTED: 4/15/15 COMPLETED: 4/15/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1013587.37 EASTING: 2027633
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 526.67 ft M.P. ELEV: 528.83 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 107.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
O
WELL
WQ
p
DESCRIPTION
0
Jp
CONSTRUCTION
p
of
CD
m0
Grout
MIL
SILT, grades to dry, brown (7.5 YR 5/3), mostly
micaceous silt, schistose texture, saprolitic.
45
50
47-49 ft. same as 40-47 ft. except becoming less
schistose/saprolitic., 49-52 ft. grades to partially
-
weathered rock -silt with abundant rock fragments,
52-54 ft. mostly rock fragments, 54-57 ft. very severely
weathered granitic gneiss, iron staining noted on joint
-
surfaces and foliation planes.
55
60
-
=
Same as 54-57 ft., severely weathered, very broken up,
GRANITIC GNEISS, abundant iron staining and
discoloration.
65
70
_, ;
67-68 ft. GRANITIC GNEISS, 68 ft. 68-74 ft.
weathered, light gray, aphanitic recrystalized, massive
-
QUARTZITE ?, abundant fractures and abundant
_\
secondary mineralization, joint surfaces with iron
--
staining abundant, large fracture filled with pyrite
crystals, shows evidence of significant strain/stress.
75
-
CLIENT: Duke Energy Progress, LLC.
ra
48 Rver Street, Suite 220 PROJECT LOCATION: Roxboro, NC
148 River
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 2 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-13BR
PROJECT NO: 1026.105
STARTED: 4/15/15 COMPLETED: 4/15/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1013587.37 EASTING: 2027633
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 526.67 ft M.P. ELEV: 528.83 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 107.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
Of
CD
Q�
m0
Hard weathered rock, MYLONITE, unable to determine
parent rock, rock color varies from black to light gray,
many joints, most iron stained surfaces throughout run,
85
- -
rock is recrystalized (similar to 68-74 ft.) from approx
82-84 ft., 85-87 ft. hard, moderately weathered, fine
�— Bentonite seal
-
grained GRANITIC GNEISS, joint surfaces with iron
staining. continued
90
-
Medium bluish gray (56 5/1) GRANITIC GNEISS with
_
pyrite inclusions, 90.5-93.2 ft.
—Sand Pack
2" pre -packed well screen
95
-
100
Strong, gneissic, slightly weathered, GRANITIC
GNEISS, moderately fractured joints, high angle to
-
vertical, some healed fractures and epidote or pale
_\
green orthoclase secondary mineralization, manganese
--
staining at open fractures at 100, 102-102.25,
103.5-104.5, and 105.6-105.8 ft.
105
-
Boring terminated at 107 ft. Bentonite added from 100
to 107 ft to facilitate well construction.
110
115
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 3 OF 3

PROJECT: Mayo Station
WELL / BORING NO: MW-14BR
PROJECT NO: 1026.105
STARTED: 2/4/15 COMPLETED: 2/4/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015432.97 EASTING: 2028964.7
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 517.76 ft M.P. ELEV: 520.75 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 46.5 ft BGS
NOTES:
LOGGED BY: B. Wilker CHECKED BY: J. Wylie
U
O
O
WQ
DESCRIPTION
0
Jp
a n
CONSTRUCTION
p
of
0
m0
-
Soft -medium hard, severely weathered, brown -black to
dark gray, medium to fine grained partially weathered
rock, intensely foliated, platy structure.
5
10
=
Hard -moderately severe weathering, dark gray,
Grout
_
fine -medium grained GRANITIC GNEISS, rough, open
2" Sch. 40 threaded PVC
-
iron stained, shallow to moderately dipping close to
-
medium close joints. Preferential weathering along
riser
foliation planes, very thin, low angle foliation.
15
20
Same as above, joints are steeply -steeply dipping,
-
close to very close, slightly less weathering with more
_
feldspar present, very thin, steeply dipping foliation in
places.
�— Bentonite seal
25
30`
Lost —28-32 ft., driller observed a soft unconsolidated
—Sand Pack
_
layer. 26.5-28 ft. hard, slight weathering, gray, fine to
-
medium grained GRANITIC GNEISS, contact at 27 ft.
2" pre -packed well screen
-
with PHYLLITE (' 1.5 in. intrusion), very thin foliation,
contact at 27.5 ft. with massive PEGMATITE vein.
35
Very hard -hard, fresh, very slight weathering, light
gray, fine -medium grained GRANITIC GNEISS, very
_
close, tight, steeply dipping healed fractures
-
(quartzite?), clasts of very fine grained biotite occurring
-
throughout, close -open, steeply dipping joints, K-spar
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-14BR
PROJECT NO: 1026.105
STARTED: 2/4/15 COMPLETED: 2/4/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015432.97 EASTING: 2028964.7
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 517.76 ft M.P. ELEV: 520.75 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 46.5 ft BGS
NOTES:
LOGGED BY: B. Wilker CHECKED BY: J. Wylie
U
O
U)
WELL
w
Q
p
DESCRIPTION
p
a Q
CONSTRUCTION
p
C�
m0
present on joint surfaces.
Very hard -hard, fresh, very slight weathering, light
gray, fine -medium grained GRANITIC GNEISS, very
close, tight, steeply dipping healed fractures
45
- _
(quartzite?), clasts of very fine grained biotite occurring
throughout, close -open, steeply dipping joints, K-spar
present on joint surfaces. (continued)
Boring terminated at 46.5 ft. Bentonite added from
35.5 to 46.5 ft. to facilitate well construction.
50
55
60
65
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lina 29601
Greenvlle, South CaroTerra
Phone:l864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-15BR
PROJECT NO: 1026.105
STARTED: 5/9/15 COMPLETED: 5/12/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1016021.83 EASTING: 2031813.2
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 460.94 ft M.P. ELEV: 460.92 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 78.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
of
(D
Q�
m0
MIL
SILT, yellowish brown (10 YR 5/6), moist, mostly silt,
few clay, few quartz fragments.
MIL
Same as above, less clay, very dense.
5
e
SILT, pink (7.5 YR 7/3), dry, dense, silt, few clay, rock,
MIL
highly weathered fragments, at 8.5 ft., PARTIALLY
WEATHERED ROCK.
10
Brown, highly weathered rock fragments in silt/clay
matrix, rocks are schistose with granitoid and quartzite
interspersed, very dry, PARTIALLY WEATHERED
ROCK.
15
Dark brown, moist, schistose, highly weathered,
partially weathered rock from 13.5-15.5 ft., grades to
_
light colored granitoid/phyllitic fragments, partially
weathered from from 15.5-18 ft., at 18 ft. competent
rock fragments.
20
Light gray with tan, hard, severely weathered mylonitic
GRANITIC GNEISS, partially weathered rock/bedrock.
Grout
2" Sch. 40 threaded PVC
riser
25
Contact at 23.5 ft., black, very weathered PHYLLITE,
iron stained joints/fractures, partially weathered
rock/bedrock.
30
_
-
Hard, moderately weathered mylonitic GRANITIC
-
GNEISS, close, high angle fractures, horizontal fracture
in top 18 in. of run.
35
_
-
Banded, hard, fresh, medium to fine grained GRANITIC
-
GNEISS, excellent ??, one close, high angle fracture,
tight with iron staining at —36.5 ft.
`
Same as above, GRANITIC GNEISS, high angle
-
fracture at 42 ft. (4' long, healed), vertical fracture
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-15BR
PROJECT NO: 1026.105
STARTED: 5/9/15 COMPLETED: 5/12/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1016021.83 EASTING: 2031813.2
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 460.94 ft M.P. ELEV: 460.92 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 78.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
w
U
Q O
U)
DESCRIPTION
p
a Q
WELL
p
p
m0
CONSTRUCTION
C�
42.5-43.2 ., mostly healed, close/tight.
Same as above, GRANITIC GNEISS, high angle
- " -
fracture at 42 ft. (4' long, healed), vertical fracture
42.5-43.2 ft., mostly healed, close/tight. (continued)
'
-
Same as above, GRANITIC GNEISS, zone of
45
-
moderately dipping to subvertical fracture from
—43.5-45 ft., iron and manganese staining.
Bentonite seal
-
Same as above, GRANITIC GNEISS, close, tight, high
50
angle to almost vertical fractures at 49.3-49.6,
-
49.7-50.2, 50.6-51.1, 52.2-52.9, and 53-53.5 ft..
-
Fractures have secondary mineralization (purple in
color), but not iron or manganese staining, fracture
surfaces are very fresh indicating absence of saturated
conditions.
55
Same as above, GRANITIC GNEISS, except rock is
-
slightly weathered, close, tight to open vertical to
-
subvertical fractures from 53.5-54.2, 54.5-55.3,
55.3-56, and 56.6-56.8 ft. Fracture planes are both
-
manganese and iron stained between 53.5-56 ft.
—Sand Pack
2" pre -packed well screen
60
_
Same as above, GRANITIC GNEISS, except multiple
horizontal to vertical fractures most with iron staining,
rock is slightly more weathered than seen in last few
runs.
-
Hard, light grey, GRANITIC GNEISS with few
65
-
feldspars, hornblende as the dominate mafic mineral,
and a vertical fracture at 67.5 ft. with iron staining.
70
_
-
Same as 63.5-38.5 ft. with high angle fracture from
-
71.2-71.7 ft. with iron staining, horizontal, rough with
manganese staining at 70.1 ft.
75
"
Same as above, with high angle rough joint from 74-75
ft.
Boring terminated at 78.5 ft. Bentonite added from 64
to 78.5 ft. to facilitate well installation.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-16BR
PROJECT NO: 1026.105
STARTED: 4/27/15 COMPLETED: 5/6/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015664.5 EASTING: 2032645.73
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 367.83 ft M.P. ELEV: 371.30 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 65.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
WQ
p
U
O
of
0
DESCRIPTION
0
O
Jp
m0
a Q
CONSTRUCTION
CL
SP
CLAY, dark brown, wet, mostly clay with fine sand,
manganese staining/mottled at 2.5 ft. (ALLUVIUM)
SC
SAND, brown, wet, fine sand, medium to coarse sand,
fine to coarse gravel. (ALLUVIUM)
5
SC
Same as above.
MIL
SP
SILT, brown, dry, mostly silt with fine to coarse grained
sand.
10
SILT, light gray/gray, moist, mostly silt, some clay,
micaceous, with coarse grained sand, rock fragments
from 10-12 ft., then some relict structure seen from
12-13.5 ft. (SAPROLITE)
Same as 12-13.5'.
15
Same as 12-15'.
20
Same as above except more rock fragments present,
Grout
highly weathered, moist from —19-22 ft. (SAPROLITE)
6" PVC surface casing
25
Same as 20-25 ft., possible small zone of water
between 27-28 ft.
30
—2" Sch. 40 threaded PVC
riser
Same as above, saprolite directly above partially
weathered rock.
35
35-36.5 ft. no recovery, 36.5-38 ft. dark brown,
saturated, rock fragments with silt/clay, partially
weathered rock, 38-40 ft. hard, weathered mylonitic
gneiss and pink, recrystalized, quartzite, heavilyjointed
and discolored, (black, purple, and red), partially
weathered rock.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
South Carolina 29601
Ter
Phone:l864 421 99lle,
9 PAGE 1 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-16BR
PROJECT NO: 1026.105
STARTED: 4/27/15 COMPLETED: 5/6/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015664.5 EASTING: 2032645.73
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 367.83 ft M.P. ELEV: 371.30 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 65.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
U)
WELL
w
Q
p
DESCRIPTION
p
a Q
CONSTRUCTION
p
C�
m0
Hard, very weathered to fresh, fine grained GRANITIC
GNEISS, many open stained iron and manganese
joints, some more competent zones from 4142' and
43-44 ft.
45
Bentonite seal
-
Hard, slightly weathered fine to medium grained
-'
GRANITIC GNEISS, fewerjoints, iron and manganese
staining, some healed fractures.
50
"
Same as above from 50-54.5 ft., hard, fresh, black, fine
grained PHYLLITE, right below phyllite is broken up
phyllite pieces in a dark gray silty matrix.
2" pre -packed well screen
Sand Pack
55
-
Same as above from 55-56 ft. Hard, fresh, mylonitic
-
GRANITIC GNEISS with pink, recrystalized
-'
zones/quartzite vein from 56-58.5 ft., hard, fresh, dark
gray/black, mylonitic PHYLLITE or AMPHIBOLITE,
minimal joints, iron staining and pyrite present.
60
- "
Mylonitic GRANITIC GNEISS with quartzite veins from
-'
60-62 ft., black, hard, mylonitic PHYLLITE or
-"
AMPHIBOLITE, minimal joining from 62-65 ft.
65
Boring terminated at 65 ft. Bentonite added from 59.5
to 65 ft. to facilitate well construction.
70
75
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 2 OF 2

PROJECT: Mayo Station
WELL / BORING NO: MW-16D
PROJECT NO: 1026.105
STARTED: 5/6/15 COMPLETED: 5/6/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015659.09 EASTING: 2032643.26
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 367.74 ft M.P. ELEV: 371.21 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 39.0 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
W
p
U
QO
of
0
DESCRIPTION
0
O
Jp
m0
a n
CONSTRUCTION
CL
SP
CLAY, dark brown, wet, mostly clay with fine sand,
manganese staining/mottled at 2.5 ft. (ALLUVIUM)
SC
SAND, brown, wet, fine sand, medium to coarse sand,
fine to coarse gravel. (ALLUVIUM)
5
SC
Same as above.
MIL
SP
SILT, brown, dry, mostly silt with fine to coarse grained
sand.
10
2" Sch. 40 threaded PVC
SILT, light gray/gray, moist, mostly silt, some clay,
micaceous, with coarse grained sand, rock fragments
riser
Grout
from 10-12 ft., then some relict structure seen from
12-13.5 ft. (SAPROLITE)
Same as 12-13.5'.
15
Same as 12-15'.
20
Same as above except more rock fragments present,
highly weathered, moist from —19-22 ft. (SAPROLITE)
�— Bentonite seal
25
Same as 20-25 ft., possible small zone of water
between 27-28 ft.
30
Same as above, saprolite directly above partially
weathered rock.
—Sand Pack
2" pre -packed well screen
35
35-36.5 ft. no recovery, 36.5-38 ft. dark brown,
saturated, rock fragments with silt/clay, partially
weathered rock, 38-40 ft. hard, weathered mylonitic
gneiss and pink, recrystalized, quartzite, heavilyjointed
and discolored, (black, purple, and red), partially
weathered rock.
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
s mTerra Phone:l864 421 9999 PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: MW-16S
PROJECT NO: 1026.105
STARTED: 5/6/15 COMPLETED: 5/6/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1015654.53 EASTING: 2032640.89
DRILLING METHOD: Rotary Sonic
G.S. ELEV: 367.94 ft M.P. ELEV: 371.11 ft
BOREHOLE DIAMETER: 6 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 8.5 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
U
O
O
WQ
DESCRIPTION
0
Jp
a Q
CONSTRUCTION
p
of
CD
m0
CL
CLAY, dark brown, wet, mostly clay with fine sand,
X,
Grout
SP
manganese staining/mottled at 2.5 ft. (ALLUVIUM)
SC
SAND, brown, wet, fine sand, medium to coarse sand,
Bentonite seal
fine to coarse gravel. (ALLUVIUM)
2" Sch. 40 threaded PVC
5
riser
-
-
SC
Same as above.
2" pre -packed well screen
Sand Pack
10
15
20
25
30
35
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: SB-01
PROJECT NO: 1026.105
STARTED: 3/4/15 COMPLETED: 3/4/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1014673.52 EASTING: 2029058.42
DRILLING METHOD: GeoProbe
G.S. ELEV: 527.46 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 18.5 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
a
WW
U
<
U
UOa a
W
U
WELLpDESCRIPTION
ION
CONSTRUCT
---
TOPSOIL.
SILT, brown, (7.5 YR 4/5), dry, mostly silt, few clay.
MIL
MIL
SILT, yellow brown, (10 YR 5/4), dry, few fine sand.
5-
MIL
SILT, reddish yellow, (5 YR 6/6), dry, few find sand.
(SAPROLITE)
zz
10
MIL
SILT, reddish yellow, (7.5 YR 6/6), dry, mostly silt with
clay. SAPROLITE-SCHIST
MIL
SILT, very dark brown, (10 YR 8/4), dry. few clay.
(SAPROLITE-GNEISS)
15
ML
Sp
SILT, yellowish brown, (10 YR) dry, most silt with fine
to medium sand, saprolite, has relict structure.
(SAPROLITE-GNEISS)
Geoprobe refusal at 18.5 ft.
20
25
30
35
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 1 OF 1

PROJECT: Mayo Station
PROJECT NO: 1026.105
DRILLING COMPANY: Cascade Drilling
DRILLING METHOD: GeoProbe
BOREHOLE DIAMETER: 2 IN
NOTES:
U
d 0 a
o <O U ? DESCRIPTION
(D
TOPSOIL
61
10
15
20
25
30
35
WELL / BORING NO: SB-02
STARTED: 3/3/15
NORTHING:
1011804.38
G.S. ELEV:
555.10 ft
DEPTH TO WATER: ft TOC
LOGGED BY:
E. Black
a
0Z
O^
o E
Q
0
o n
uj
m
MIL SILT, mottled, mostly silt, pale brown (2.5 YR 7/3)
yellowish red (5 YR 4/6) strong brown (7.5 YR 5/6).
MIL I SILT, same as above, little fine sand, relict structures.
Same as above.
MIL I Same as 10-10.5'.
SAPROLITE - GRANITIC GNEISS, light yellowish
brown, (10 YR 6/4).
Geoprobe refusal at 16 ft.
COMPLETED: 3/3/15
EASTING: 2029242.07
M.P. ELEV: ft
TOTAL DEPTH: 16.0 ft BGS
CHECKED BY: J. Wylie
WELL
CONSTRUCTION
CLIENT: Duke Energy Progress, LLC.
lo SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
GreenvTerms Phone: l864 421 9999 Carolina 29601 PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: $B-03
PROJECT NO: 1026.105
STARTED: 3/4/15 COMPLETED: 3/4/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1010721.64 EASTING: 2028636.83
DRILLING METHOD: GeoProbe
G.S. ELEV: 555.96 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 19.5 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
U
O
U)
WELL
w
Q
DESCRIPTION
p
a Q
CONSTRUCTION
p
Of
CD
Q�
m0
TOPSOIL
SAND/GRAVEL, intermixed. (FILL/REWORKED SOIL)
5
ASH, moist.
SAND, GRAVEL, clayey. (FILL/REWORKED SOIL)
10
CLAY/SAND/GRAVEL, interbedded.
(FILL/REWORKED SOIL)
15
SILT/CLAY, structureless silt/clay with pieces of grass,
wood, burnt vegetation, mud and gravel intermixed.
(FILL/REWORKED SOIL)
20
Geoprobe refusal at 19.5 ft.
25
30
35
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lle, South Carolina 29601
GreenvsynTerra l864
Phone: [phone] PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: $B-04
PROJECT NO: 1026.105
STARTED: 3/3/15 COMPLETED: 3/3/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1011436.41 EASTING: 2032770.9
DRILLING METHOD: GeoProbe
G.S. ELEV: 513.47 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 4.5 ft BGS
NOTES:
LOGGED BY: E. Black CHECKED BY: J. Wylie
a
U
a
WELLpDESCRIPTION
WW
<
W
ION
CONSTRUCT
U
UOa
U
MIL
SILT, yellowish brown (10 YR 5/6), dry, few fine to
coarse grained sand.
CL
CLAY, mottled, light gray (2.5 YR 7/1), brownish yellow
CH
(10 YR 6/6) 30%, dry, mostly clay, some silt, cohesive
structure.
5
THERED ROCK, soft, moderately r
�severeweoathering,
iron and manganese staining,rained.
Geoprobe refusal at 4.5 ft.
10
15
20
25
30
35
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
Greenvlle, South Carolina 29601
.synTerra Phone:l864 421 9999 PAGE 1 OF 1

PROJECT: Mayo Station
PROJECT NO: 1026.105
DRILLING COMPANY: Cascade Drilling
DRILLING METHOD: GeoProbe
BOREHOLE DIAMETER: 2 IN
NOTES:
U
d a0 U
o <O ? DESCRIPTION
(D
61
10
15
20
25
30
35
WELL / BORING NO: SB-05
STARTED: 3/3/15
NORTHING:
1013889.72
G.S. ELEV:
498.41 ft
DEPTH TO WATER: ft TOC
LOGGED BY:
E. Black
a
0z
O^
o E
Quj
a n
m 0
TOPSOIL, 10 YR 7/3 , light pale brown.
SAND with SILT, dry, poorly graded sand with silt,
SM medium fine to medium sand, few coarse sand, some
silt, saprolitic.
SM Same as above.
MIL SILT, yellowish brown (10 YR 6/4), some clean clay,
little to fine sand, moist.
SM SAND, some silt, mottled, dry, mostly medium to
coarse, saprolitic.
SC SAND, little silt, very pale brown, (10 YR 8.5/2), dry,
mostly fine to medium, saprolitic.
Geoorobe refusal at 14.0 ft.
COMPLETED: 3/3/15
EASTING: 2032752.66
M.P. ELEV: ft
TOTAL DEPTH: 14.0 ft BGS
CHECKED BY: J. Wylie
WELL
CONSTRUCTION
CLIENT: Duke Energy Progress, LLC.
lo SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
GreenvTerms Phone: l864 421 9999 Carolina 29601 PAGE 1 OF 1

PROJECT: Mayo Station
WELL / BORING NO: $B-06
PROJECT NO: 1026.105
STARTED: 3/4/15 COMPLETED: 3/4/15
DRILLING COMPANY: Cascade Drilling
NORTHING: 1013260.46 EASTING: 2032531.74
DRILLING METHOD: GeoProbe
G.S. ELEV: 510.62 ft M.P. ELEV: ft
BOREHOLE DIAMETER: 2 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 2.2 ft BGS
NOTES:
LOGGED BY: J. Wylie CHECKED BY: E. Black
a
U
a
WELLpDESCRIPTION
WW
<
W
ION
CONSTRUCT
U
UOa
U
P M
SAND, pale brown, (2.5 YR 7/3), dry, mostly fine to
medium sand, some silt, poorly graded.
Geoprobe refusal at 2.2 ft.
5
10
15
20
25
30
35
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
lina 29601
Greenvlle, South CaroTerra
Phone:l864 421 9999 PAGE 1 OF 1

PROJECT: Mayo Station
PROJECT NO: 1026.105
DRILLING COMPANY: Cascade Drilling
DRILLING METHOD: GeoProbe
BOREHOLE DIAMETER: 2 IN
NOTES:
U
d a0 U
W <O ? DESCRIPTION
0
61
10
15
20
25
30
35
WELL / BORING NO: SB-07
STARTED: 5/7/15
NORTHING:
1014951.28
G.S. ELEV:
379.63 ft
DEPTH TO WATER: ft TOC
LOGGED BY:
E. Black
a
0z
O^
o E
QW�
a n
m0
TOPSOIL, medium brown -gray, mostly silt, few fine
MIL sand, moist.
SILT, medium yellowish brown, mostly silt, some fine
MILsand, moist to dry.
SLT, gray, dark reddish brown, orange -yellow, little fi
>PG to medium grained sand, medium grained gravel
uartzite dry. Some manganese staining.
SANDY SILT, dark brown, sandy silt with medium
ravel(quartzite).
SAND/GRAVEL, dark yellowish brown, mostly mediu
MIL to coarse sand, some small gravel, wet. (ALLUVIUM
Same as above. (ALLUVIUM)
MIL �_ Same as 1.7-2.8'
COMPLETED: 5/7/15
EASTING: 2032000.18
M.P. ELEV: ft
TOTAL DEPTH: 8.0 ft BGS
CHECKED BY: J. Wylie
WELL
CONSTRUCTION
CLIENT: Duke Energy Progress, LLC.
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Roxboro, NC
GreenvTerms Phone: l864 421 9999 Carolina 29601 PAGE 1 OF 1

SynTerra
KEY TO SYMBOLS
148 River Street, Suite 220
Greenville, SC 29601
sy"Terra 864-421-9999
864-421-9909
CLIENT Duke Energy Progress LLC. PROJECT NAME
Mayo Station
PROJECT NUMBER 1026.105 PROJECT LOCATION Roxboro, NC
LITHOLOGIC SYMBOLS
SAMPLER SYMBOLS
(Unified Soil Classification System)
Grab Sample
ASH -COAL: Coal Ash
IMCL:
USCS Low Plasticity Clay
,
Shelby Tube
CLAY_TTC: TTC Clay
CL-ML: USCS Low Plasticity Silty Clay
WELL CONSTRUCTION SYMBOLS
CLS: USCS Low Plasticity Sandy Clay
FILL: Fill (made ground)
Bentonite Seal (Cased Well)
ML: USCS Silt
Cement Seal
MLS: USCS Sandy Silt
Filter Pack (Cased Well)
RK Pulverized Rock
Well Casing
❑
SAND—TTC. TTC Sand
ILTWell
SANDST_TTC: TTC Silty Sand
Screen (Cased Well)
SILT—TTC: TTC Silt
H
Well Casing
SM: USCS Silty Sand
SPG: USCS Poorly -graded Gravelly
o
Sand
USGS 701: Metamorphism
'
USGS 702'. Quartzite
ABBREVIATIONS
BGS -BELOW
GROUND SURFACE
PID PHOTOIONIZATION DETECTOR
G.S. -GROUND
SURFACE
ppm PARTS PER MILLION
M.P. -MEASURING
POINT
TOC -TOP
OF CASING
USCS-
UNIFIED SOIL CLASSIFICATION SYSTEM
— Water Level at Time
ft
FEET
Drilling, or as Shown
IN
INCHES
Water Level at End of
Drilling, or as Shown
Z Water Level After 24
Hours, or as Shown