NC0004774_4_FINAL_CSA Supplement 2_Buck_Appendix A_20160802

BORING NUMBER GWA-1 SB
440 S. Church Street,
Charlotte, NC28202-2075
Suite 900
PAGE
1 OF 1
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376
PROJECT LOCATION Rowan County NC
DATE STARTED 1/18/16
COMPLETED 1/19/16 GROUND ELEVATION HOLE SIZE(S) 4.75 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic
GROUND WATER LEVELS:
LOGGED BY B. Doran
CHECKED BY �F DATE/TIME 1/18/2016 4:25:00 PM 5.20 ft
NOTES
1 DATE/TIME ---
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DESCRIPTION
REMARKS
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(CL) SANDY CLAY WITH GRAVEL, Medium,
Sonic Drilling, Therefore Densities are
Brown (7.5YR 4/4), Low Plasticity, Moist,
Estimates. Advanced 4.75" Barrel with no
Cohesive, Minor Mica (SOIL)
Sonic Casing
1.0'-2.0' SPLP Sample Obtained
AU-1
5
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
(ML) SILT WITH SAND, Soft to Medium, Light
5.2' Water Level 1/18/16 Measured During
-
Olive Brown (2.5Y 5/4) to Olive (5Y 5/4),
Drilling
Non -Plastic, Wet, non -cohesive, Micaceous, Relic
Fe Staining
Rock Texture (SAPROLITE)
5.0'-7.0' SPLP Sample Obtained
SD-1
40
Continued: Yellowish Brown (10YR 5/8) and Very
9.0' Fe Staining Abundant
10
Dark Grayish Green (5GY 3/2), Relic Veining
(SAPROLITE)
SD-2
70
12.0'-14.0' SPLP Sample Obtained
Boring Terminated at 15.0' BGS
15
Grouted to Surface 1/19/16
Bottom of borehole at 15.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-1SB: Sample SC-1 Depth: 5.0' - 10.0' Date: 01/19/16
Photo 2 — GWA-1SB: Sample SC-2 Depth: 10.0'-15.0' Date: 01/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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BORING NUMBER GWA-2S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 2/2/16 COMPLETED 2/3/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY B. Doran CHECKED BY DATE/TIME 2/4/2016 10:35:00 AM 20.05 ft
NOTES 1 DATE/TIME ---
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DESCRIPTION
REMARKS
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(CL) CLAY WITH SAND, Stiff, Red (2.5YR 4/6),
Sonic 4.75" Barrel with 6" Sonic Casing
medium plasticity, moist, cohesive (SOIL)
Advanced from Surface. Densities are
Estimates
0'-4.0' Contains roots
0'-7.5' Fe staining throughout
SD-1
65
Continued: Plasticity decreasing with depth
--------------------
(ML) SANDY SILT, medium to soft, red (2.5YR
Contact transitional
5
5/8), non -plastic, moist, non -cohesive (SOIL)
SD-2
43
(SW-SM) SAND WITH SILT, medium dense to
loose, reddish yellow (7.5YR 7/6), non -plastic,
moist, non -cohesive, relic rock texture
(SAPROLITE)
9.0' Trace Fe staining
10
Continued: Very pale brown (10YR 7/4), decreasing
silt with depth
SD-3
48
15
Continued: Wet
Continued: Mottled black (10YR 2/1), dark red (1OR
16.2 Fe and Mn staining
3/6), and reddish brown (2.5YR 4/4), micaceous,
SD-4
61
contains thin beds of quartz gravel and trace clay
Quartz gravel absent
20
19.4' Water level from adjacent GWA-2BRU
2/2/16 before drilling
20.7' Water level from adjacent GWA-2BR
2/2/16 before drilling
SD - 5
66
...
25

440 S. Church Street, Suite 900
F)ICharlotte, NC 2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269376
BORING NUMBER GWA-2S
PAGE 2OF2
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT LOCATION Rowan Countv. NC
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DESCRIPTION
REMARKS
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Quartz gravel absent (confinued)
SD-6
68
:.
30
.• 2
-
SD-7
64
(SW) SAND, loose to medium dense, light red
(2.5YR 7/6) mottled black (10YR 2/1) and pinkish
;..
-
gray (7.5YR 7/2), non -plastic, wet, non -cohesive,
micaceous (SAPROLITE)
Monitoring well installed on 2/3/16
-
Screened interval set at 15.0'-30.0' BGS
:.
35
Boring terminated at 35.0' BGS
Bottom of borehole at 35.0 feet.

BORING NUMBER GWA-6SB
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 1/14/16 COMPLETED 1/14/16 GROUND ELEVATION HOLE SIZE(S) 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY DATE/TIME ---
NOTES DATE/TIME 1/14/2016 1:00:00 PM 39.30 ft
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DESCRIPTION
REMARKS
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(ML) SILT, red (2.5YR 4/6), moist, medium
plasticity, cohesive, micaceous
1'-2' SPLP-1 sample collected
SD-1
72
5
SD-2
48
(ML) SILT WITH SAND, strong brown (7.5YR
4/6), moist, non -plastic, non -cohesive, micaceous
10
11' Organic rich layer with roots —6" thick
SD-3
60
15
SD-4
60
Continued: yellowish brown (10YR 5/4)
20
SD-5
60
25

BORING NUMBER GWA-6SB
440 S. Church Street,
Charlotte, NC28202-2075
Suite 900
PAGE
2 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376
PROJECT LOCATION Rowan County NC
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REMARKS
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25-26' Organic rich layer
(ML) SANDY SILT, pale brown (2.5YR 8/3), dry,
non -plastic, non -cohesive
SD-6
60
30
(SW) SAND WITH GRAVEL, pale brown (2.5YR
8/3), dry, non -plastic, non -cohesive
SD-7
60
35
36' Red clay seam, tree root in core sample
SD-7
60
37'-39' SPLP-2 sample collected
38' Gravel content increased
1
40
40'-42' SPLP-3 sample collected
SD-8
24
Boring terminated at 42' and grouted to
surface
Bottom of borehole at 42.0 feet.

BORING NUMBER GWA-13S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
DATE STARTED 1/20/16 COMPLETED 1/20/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY B. Doran CHECKED BY DATE/TIME ---
NOTES DATE/TIME 1/20/2016 8:45:00 AM 22.50 ft
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DESCRIPTION
REMARKS
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See GWA-13D for Lithologic Description
Well dry; abandoned 3/3/16
5
1
10
15
20
25

440 S. Church Street, Suite 900
F)ICharlotte, NC 2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269376
BORING NUMBER GWA-13S
PAGE 2OF2
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT LOCATION Rowan Countv. NC
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DESCRIPTION
REMARKS
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25
See GWA-13D for Lithologic Description
;
30
Bottom of borehole at 31.0 feet.
Boring Terminated at 31'
Screened Interval Set at 15'-30'
Monitoring Well Installed on 1/20/16, ::::'
Abandoned on 3/3/16 i

BORING NUMBER GWA-13SR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
DATE STARTED 3/3/16 COMPLETED 3/4/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY B. Doran CHECKED BY DATE/TIME 3/4/2016 8:45:00 AM 31.00 ft
NOTES 1 DATE/TIME ---
az
=
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DESCRIPTION
REMARKS
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See GWA-13D for Lithologic Description
Boring drilled to replace dry well at GWA-13S
5
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f.
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10
15
20
25

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BORING NUMBER GWA-13SR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075
PAGE
2 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376
PROJECT LOCATION Rowan County NC
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DESCRIPTION
REMARKS
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25
See GWA-13D for Lithologic Description
30
Y
35
Boring Terminated at 40.2'
Screened Interval Set at 25'-40'
40
Monitoring Well Installed on 3/4/16
Bottom of borehole at 40.2 feet.

BORING NUMBER GWA-13D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 1/19/16 COMPLETED 2/1/16 GROUND ELEVATION HOLE SIZE(S) 10.75, 7 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY B. Doran CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
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DESCRIPTION
REMARKS
° W
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0
(CL) SANDY CLAY, soft, red (2.5YR 4/8), low
Hole Size:
plasticity, moist, cohesive (SOIL)
10.75" 0'-48'
7" 48'-53.5'
5" 53.5'-70'
Sonic Drilling, Therefore Densities are
AU-1
Estimated
(ML) SANDY SILT, Soft, Red (2.5YR 4/8)
Contains Roots from Surface, Abundant Fe
non -plastic, moist, non -cohesive (SOIL)
Staining
Contact Transitional
5
Contact Transitional Over 1'
(SP-SM) SAND WITH SILT, loose, yellowish red
(5YR 5/6), non -plastic, moist, non -cohesive,
fine-grained sand (SOIL)
7' - Trace relic foliation
SD-1
60
10
Fe Staining Less Abundant
SD-2
57
15
Contact Transitional Over 1'
(SW) SAND, medium dense, yellowish brown
(10YR 5/4), non -plastic, moist, non -cohesive,
quartz -rich sand (ALLUVIUM)
SD-3
48
18.0' Water Table Per Sample
Trace Fe and Mn staining
20
SD-4
71
22.5' Water level 1/20/16 8:45 before drilling
Fe staining abundant, Mn staining absent
25

BORING NUMBER GWA-13D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
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DESCRIPTION
REMARKS
° W
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(SP-SM) SAND WITH SILT, medium dense,
yellowish brown (10YR 5/6), non -plastic, wet to
moist, non -cohesive, micaceous, distinct relic
foliation (SAPROLITE) (continued)
Continued: Contains relic quartz veins and granular
SD-5
55
rock texture, decreasing silt with depth
30
SD-6
62
Continued: Dense, moist, trace fine gravel
(SAPROLITE)
35
Contact transitional over 2'
(SW) SAND, dense, dark yellowish brown (10YR
4/6), non -plastic, moist, non -cohesive, micaceous
Fe staining throughout
(SAPROLITE)
SD-7
60
37.0' Driller note: formation taking water
40
Continued: medium dense, yellowish brown (10YR
5/4), wet (SAPROLITE)
SD-8
42
45
SD-9
62
Continued: dark gray (10YR 4/1), trace gravel
48.0' Difficult drilling
(SAPROLITE)
INTERMEDIATE METAVOLCANIC, strong, bluish
gray (10B 5/1), fine phaneritic, massive
50

BORING NUMBER GWA-13D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
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DESCRIPTION
REMARKS
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INTERMEDIATE METAVOLCANIC, strong, bluish
Sonic 10.75" casing advanced 0'-48', 7" sonic
gray (10B 5/1), fine phaneritic, massive
barrel advanced to 53.5'
(continued)
50.8' 6" PVC casing installed, grouted to
SD-
42
surface 1/27/16
10
Continued: Weakly foliated
RC-1
100
55
54.9' Joint: Dip 60°, Tight, Healed, Fe Stained
RC-2
98
Contact: Dip 70'
FELSIC METAVOLCANIC, Strong to very strong,
From 58.3' fresh, unfractured to slightly
bluish gray (5pb 6/1), phaneritic, foliated
fractured
60
61.0'-61.5' Shear Zone: Dip 60°, Healed,
RC-3
72
Biotite, Epidote(?), Chlorite(?), Pyrite
Mineralized
61.4' Joint: Dip 75°, tight, pyrite mineralized,
slicken sided
61.5'-62.9' likely location of core loss
65
64.5'-70.0' all breaks considered mechanical.
4.3' slipped core from SC-4 retrieved with
SC-5
RC-4
80
Monitoring well installed on 2/1/16
VBoring
Screened interval set at 60'-65' BGS
RC - 5
100
70
terminated at 70.0' BGS
Bottom of borehole at 70.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-13D: Sample SC-1 Depth: 5.0' - 10.0' Date: 01/19/16
Photo 2 — GWA-13D: Sample SC-2 Depth: 10.0' - 15.0' Date: 01/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — GWA-13D: Sample SC-3 Depth: 15.0' - 20.0' Date: 01/19/16
Photo 4 — GWA-13D: Sample SC-4 Depth: 20.0' - 25.0' Date: 01/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — GWA-13D: Sample SC-5 Depth: 25.0' - 30.0' Date: 01/19/16
Photo 6 — GWA-13D: Sample SC-6 Depth: 30.0' - 35.0' Date: 01/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 7 — GWA-13D: Sample SC-7 Depth: 35.0' - 40.0' Date: 01/19/16
Photo 8 — GWA-13D: Sample SC-8 Depth: 40.0' - 45.0' Date: 01/20/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 9 — GWA-13D: Sample SC-9 Depth: 45.0' - 50.0' Date: 01/20/16
Photo 10 — GWA-13D: Box 1 of 2 Depth: 53.5'-64.5' Date: 01/30/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — GWA-13D: Box 2 of 2 Depth: 64.5'-70.0' Date: 02/01/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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BORING NUMBER GWA-14S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075
PAGE 1 OF 1
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376
PROJECT LOCATION Rowan County NC
DATE STARTED 3/4/16 COMPLETED 3/4/16
GROUND ELEVATION HOLE SIZE(S)
6 inches
DRILLING CONTRACTOR Cascade Drilling L.P.
NORTHING EASTING
DRILLING METHOD Sonic
GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY
DATE/TIME ---
NOTES
DATE/TIME 3/4/2016 3:15:00 PM 3.50 ft
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DESCRIPTION
REMARKS
° W
0
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E0y
03
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0
See GWA-14BR for Lithologic Description
5
Boring Terminated at 15'
r.'
10
Screened Interval Set at 4'-14'
15
Monitoring Well Installed on 3/4/16
..
Bottom of borehole at 15.0 feet.

BORING NUMBER GWA-14D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 2/18/16 COMPLETED 3/4/16 GROUND ELEVATION HOLE SIZE(S) 10.75, 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
LL j
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DESCRIPTION
REMARKS
° W
0
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03
g0
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w
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0
See GWA-14BR for Lithologic Description 0'-40'
Hole Size(s):
10.75" 0'-15'
9" 15'-56.5'
5" 56.5'-74'
5
10
15
20
25

BORING NUMBER GWA-14D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
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8
0
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3: H
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DESCRIPTION
REMARKS
° W
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0-
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25
See GWA-14BR for Lithologic Description 0'-40'
30
35
40
(ML) SILT WITH GRAVEL, strong brown (7.5YR
5/8) and olive (5Y 5/3), moist, non -plastic,
non -cohesive (SAPROLITE)
SD-1
60
45
Continued: Very dark grayish olive (10Y 3/2)
45' Color changes, gravel content increases
SD-2
42
49' Rock can be crumbled by hand with few
hard, weathered, and oxidized fragments
50
throughout

BORING NUMBER GWA-14D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 3
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
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3: H
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DESCRIPTION
REMARKS
° W
0
0-
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(ML) SILT WITH GRAVEL, olive gray (5Y 4/2),
Dry, very loosely consolidated, heavily
IX
dry, non -plastic, non -cohesive
orange/brown oxidation, highly decomposed
SD-3
60
(SAPROLITE/WEATHERED ROCK) (continued)
52.5-54.5': Clay -rich zone relative to silt -rich
49-52.5', soil/saprolite and rock interface - 54.5'
55
SD-4
36
54.5'-56.5' Rock is mechanically fractured,
powdered, and pulverized
INTERMEDIATE METAVOLCANIC, strong, white
and dark gray, phaneritic, massive, fresh
(WEATHERED/FRACTURED ROCK)
56.5' 6" PVC casing installed and grouted to
surface on 3/2/16
RC-1
80
54.5'-74' Rock is fresh, no staining or oxidation
present
58.5' Poor recovery, fractures are
60
mechanically induced due to excessive
hammering required to retrieve sample from
core barrel
RC-2
40
65
70
RC-3
78
MAFIC METAVOLCANIC, strong, very dark gray,
aphanitic, fresh (SOUND ROCK)
Boring Terminated at 74'
Screened Interval Set at 58.7'-63.7'
Monitoring Well Installed on 3/4/16
Bottom of borehole at 74.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
$uCK 'DAM GAPTO
"(1 /�'rCiP'`,
T u+c CA'ANt Rc 1 5do.5 58.5' 2C o2:58.5 (ck,5'
_ ,t
15°x. �eFl p fC•3 6,96' 74'
II 'Dmtu 31 k�: hog
l `tr.w_ c'. C. onn: Kr,l Per.. 78l1
Photo 1 — GWA-14D: Box 1 of 1 Depth: 56.5' - 74.0' Date: 03/04/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-13D: Box 1 of 2 Depth: 53.5'-64.5' Date: 01/30/16
Photo 2 — GWA-13D: Box 2 of 2 Depth: 64.5'-70.0' Date: 02/01/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

BORING NUMBER GWA-14BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 2/10/16 COMPLETED 2/18/16 GROUND ELEVATION HOLE SIZE(S) 10.75, 9.25, 8, 5 inc
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY B. Doran CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
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DESCRIPTION
REMARKS
° W
0
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0
(ML) SILT WITH SAND, Medium to Stiff, Strong
Hole Size(s):
Brown (7.5YR 4/6), Non -Plastic, Moist,
10.75" 0'-45'
non -cohesive (SOIL)
9.25" 45'-47'
8" 47'-56.5'
5" 56.5-105'
SD-1
55
0'-8' Roots, sparse Mn staining
5
(SM) SILTY SAND WITH GRAVEL, Dense,
Strong Brown (7.5YR 4/6), Non -Plastic, Moist,
non -cohesive, Fine to Medium -Grained Gravel of
-
Quartz, Relic Rock Texture (SAPROLITE)
SD-2
53
Continued: Decreasing Gravel with Depth
7.5' Increased Mn staining
8'-9' Trace dark grayish green (5GY 4/2)
staining
10
SD-3
64
--------------------
(SW-SM) SAND WITH SILT AND GRAVEL,
Dense, Yellowish Brown (10YR 5/6) and Very
Pale Brown (10YR 8/3), Non -Plastic, Moist to
15
Wet, non -cohesive, Micaceous, Relic Rock
Texture and Foliation (SAPROLITE)
Continued: Gravel Trace, Medium Dense, Yellowish
Brown (10YR 5/4)
SD-4
53
20
Continued: Gravel Absent, Dense
SD-5
62
25

BORING NUMBER GWA-14BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
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REMARKS
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Continued: Gravel Absent, Dense (continued)
SD-6
64
Contact Transitional over 3'
(SW) SAND, Medium Dense to Dense, Strong
Brown (7.5YR 5/6), Non -Plastic, Moist to Wet,
30
non -cohesive, Micaceous (SAPROLITE)
Continued: Greenish Gray (10GY 3/1), Thinly
Bedded
SD-7
58
35
SD-8
57
Continued: Friable with Gravel, Dry to Moist
40
39.4' Fe staining throughout with healed
fractures and high angle joints
INTERMEDIATE METAVOLCANIC, Weak to
Strong, Reddish Yellow (7.5YR 6/6) and Dark
Gray (7.5YR 4/1), Fine Phaneritic, Foliated
(WEATHERED ROCK)
SD-9
50
45
44.5' Fresh, intensely fractured, some Fe
staining and mineralization on high angle joints
INTERMEDIATE METAVOLCANIC, Strong, Dark
Gray (7.5YR 4/1), Fine Phaneritic, Foliated
SD-
10
45
50

BORING NUMBER GWA-14BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
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DESCRIPTION
REMARKS
° W
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INTERMEDIATE METAVOLCANIC, Strong, Dark
0'-55' 3 joints, dip 80°, tight, fresh,
Gray (7.5YR 4/1), Fine Phaneritic, Foliated
slickensided,
(continued)
SD-
11
Continued: Dark Bluish Gray (5PB 4/1)
55
556" PVC casing installed and grouted to
SD-
12
100
surface on 2/13/16
RC-1
60
60'-65' Fresh, moderately to intensely
fractured; 3 joints, dip 80°, tight to partially
open, fresh to slight Fe mineralization
RC-2
72
Continued: Banded, Brecciated
Bands: Dip 70'
65
Contact Transitional over 3'
Alternating bands of:
INTERMEDIATE METAVOLCANIC, Strong, Very
65' Bands dip 60'
Dark Gray (N3), Fine Phaneritic, Weakly Foliated
66' Joint, dip 601, partially open, Fe staining in
(SOUND ROCK)
mechanically broken zone
RC-3
84
and
FELSIC METAVOLCANIC, Strong, White (N8.5),
Phaneritic, Weakly Foliated (SOUND ROCK)
69.2' Joint, dip undulating 80°-90°, tight,
70
epidote mineralization
70'-75' Fresh, unfractured
RC-4
86
From 73': Bands becoming thicker with undulating
boundaries
75

BORING NUMBER GWA-14BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 5
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
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REMARKS
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75
Alternating bands of:
INTERMEDIATE METAVOLCANIC, Strong, Very
Dark Gray (N3), Fine Phaneritic, Weakly Foliated
6.1' Joint, dip 80°, open, epidote
(SOUND ROCK)
mineralization
RC-5
94
and
77.5' Joint, dip 75°, open, slickensided
FELSIC METAVOLCANIC, Strong, White (N8.5),
Phaneritic, Weakly Foliated (SOUND ROCK)
(continued)
80
79.6' Joint, dip 60° partially open, mineralized,
Fe stained
81.1'-85' 4 Joints, dip 70°-90°, tight to partially
:.
open, slickensided, mineralized
RC-6
93
i..
84'-85' Fracture zone, recovered as rubble,
MAFIC METAVOLCANIC, Strong, Greenish Black
85
(10Y 2.5/1), Phaneritic, Foliated (SOUND ROCK)
slickensides evident, fractures mineralized
85-90' 5 Joints, dip 701-90°, tight to partially
open, slickensided, mineralized
RC-7
90
90.5'-95' Fresh, unfractured
RC-8
92
95
94.7' Joint, dip 80°, tight, trace Fe
mineralization
RC-9
100
98.4' Joint, dip 801, tight
98.5'-105' All fractures interpreted as
mechanical
100
1
1
1
1
1
1

440 S. Church Street, Suite 900
F)ICharlotte, NC 2802-2075
Phone:[phone]
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CLIENT Duke Energy Carolinas
PROJECT NUMBER 269376
BORING NUMBER GWA-14BR
PAGE 5OF5
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT LOCATION Rowan Countv. NC
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DESCRIPTION
REMARKS
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MAFIC METAVOLCANIC, Strong, Greenish Black
(10Y 2.5/1), Phaneritic, Foliated (SOUND ROCK)
-
(continued)
R
94
0
,oring Terminated at 105'
Screened Interval Set at 83'-88'
Monitoring Well Installed on 2/18/16
Bottom of borehole at 105.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-14BR: Sample SC-1 Depth: 0.0' - 5.0' Date: 02/10/16
Photo 2 — GWA-14BR: Sample SC-2 Depth: 5.0' - 10.0' Date: 02/10/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — GWA-14BR: Sample SC-3 Depth: 10.0' - 15.0' Date: 02/10/16
Photo 4 — GWA-14BR: Sample SC-4 Depth: 15.0' - 20.0' Date: 02/10/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — GWA-14BR: Sample SC-5 Depth: 20.0' - 25.0' Date: 02/10/16
Photo 6 — GWA-14BR: Sample SC-6 Depth: 25.0' - 30.0' Date: 02/10/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment
Appendix A, Sample Photographs FN
Photo 7 — GWA-14BR: Sample SC-7 Depth: 30.0' - 35.0' Date: 02/11/16
Photo 8 — GWA-14BR: Sample SC-8 Depth: 35.0' - 40.0' Date: 02/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 9 — GWA-14BR: Sample SC-9
Depth: 40.0' -45.0' Date: 02/11 /16
Photo 10 — GWA-14BR: Sample SC-10 Depth: 45.0' - 50.0' Date: 02/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — GWA-14BR: Sample SC-11 Depth: 50.0' - 55.0' Date: 02/12/16
I3UCK STEAM 5TAT10N
130RIN(�% GwA-r4BR
SAMPLE;
R�Cav¢RY,�o
CArE.
Photo 12 — GWA-14BR: Sample SC-12 Depth: 55.0' - 56.5' Date: 02/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 13 — GWA-14BR: Box 1 of 4 Depth: 56.5' - 71.7' Date: 02/16/16
Photo 14 — GWA-14BR: Box 2 of 4 Depth: 71.7' - 82.7' Date: 02/16/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 15 — GWA-14BR: Box 3 of 4 Depth: 82.7' - 95.0' Date: 02/16/16
Photo 16 — GWA-14BR: Box 4 of 4 Depth: 95.0' - 105.0' Date: 02/16/16
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BORING NUMBER GWA-15S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 1
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
DATE STARTED 3/10/16 COMPLETED 3/10/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
W �
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e
=
} W
H W
U) W
H-
}
Y �
p
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DESCRIPTION
REMARKS
° W
p
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m0�
0
�0
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,20
UZ
W
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0
0
See GWA-15D for Lithologic Description
5
Boring terminated at 20', screened interval set
10
15
at 3'-18', monitoring well installed 3/10/16
20
Bottom of borehole at 20.0 feet.

BORING NUMBER GWA-15D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 5
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 3/5/16 COMPLETED 3/10/16 GROUND ELEVATION HOLE SIZE(S) 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY DATE/TIME ---
NOTES DATE/TIME 3/7/2016 8:30:00 AM 3.70 ft
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DESCRIPTION
REMARKS
° W
0
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g0
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0
(OL/OH) SANDY ORGANIC SOIL, dark yellowish
brown (10YR 5/6), moist, non -plastic,
`non -cohesive, contains roots _ _ _ _ _ _ _ 7
0-78': 4" sample x 6" casing, then 9" to ream
(SP-SM) POORLY GRADED SAND WITH SILT,
hole open
strong brown (7.5 YR 5/8), moist, non -plastic,
0 10': drilled dry; 19': began using water;
non -cohesive, roots 2.54
78-117': 3" sample x 5"casing
1
5
SD-1
108
4.5': End of organic material
(SW-SM) WELL GRADED SAND WITH SILT,
light gray (2.5Y 7/1), and olive yellow (25Y 7/6),
moist, non -plastic, non -cohesive, colors are
mottled, light gray more abundant
10
Sharp contact at 10'
10-12': Colors are mottled
(CH) FAT CLAY WITH SAND, light gray (5Y 7/1)
with wispy lightly yellowish brown (10YR 6/4),
moist high plasticity, cohesive
Sharp contact at 12'
(SP) POORLY GRADED SAND, light yellowish
brown (25Y 6/4), wet, non -plastic, non -cohesive
SD-2
106
15
Alluvial cobble (—fist sized)
harp contact at 16'
(ML) SILT WITH SAND, yellowish brown (10YR
5/4), moist, non -plastic, non -cohesive
Sharp contact at 19'
(CH) FAT CLAY WITH SAND, light gray (5Y 7/1)
20
with wispy lightly yellowish brown (10YR 6/4),
moist high plasticity, cohesive
Sharp contact at 21.5'
(ML) SILT WITH SAND, light olive brown (2.5Y
5/3), moist, non -plastic, non -cohesive
(SAPROLITE)
SD-3
127
25

BORING NUMBER GWA-15D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 5
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
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0
_UJ
rt
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3: H
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DESCRIPTION
REMARKS
° W
0
0-
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a
25
(ML) SILT WITH SAND, light olive brown (2.5Y
5/3), moist, non -plastic, non -cohesive
(SAPROLITE) (continued)
30
35
SD-4
120
38.5': Color begins to change slightly greenish,
black staining (Mn), weathered rock, Color
40
continues to 42'
42.5-43.5': Gravelly layer in the saprolite
SD-5
66
45
45.5-46': Another gravely layer
(SW-SM) WELL GRADED SAND WITH SILT,
SC-6: Three attempts, poorly recovered
light olive brown (2.5Y 4/6), dry, non -plastic,
"jumbled" sample
non -cohesive (SAPROLITE)
SD-6
42
50

BORING NUMBER GWA-15D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 5
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
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0
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3: H
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DESCRIPTION
REMARKS
° W
0
0-
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50
(SW-SM) WELL GRADED SAND WITH SILT,
Material lost in SC-7/SC-8, approximately
light olive brown (2.5Y 4/6), dry, non -plastic,
46-56'
non -cohesive (SAPROLITE) (continued)
SD-7
18
55
SD-8
36
60
SC-9: Gravel and cobble clasts in upper 0.5' of
run; depth uncertain due to poor recovery
(SW-SM) WELL GRADED SAND WITH SILT,
light olive brown (2.5Y 5/6), moist, non -plastic,
non -cohesive, with layers of LEAN CLAY with
SAND, dark grayish brown (2.5Y 4/2), low
plasticity, moist, cohesive; also many —1/4" thick
SD-9
30
lean clay with sand layers (SAPROLITE)
(SW -SC) WELL GRADED SAND WITH CLAY,
65
yellowish brown (10YR 5/6), dry, non -plastic,
non -cohesive (SAPROLITE)
SD -
10
54
70
69.5-73': Continued Saprolite with same Lean Clay
with Sand layers as SC-9
SD-
51
11
(SP) POORLY GRADED SAND, olive brown (25Y
4/3), moist, non -plastic, non -cohesive
75

BORING NUMBER GWA-15D
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 4 OF 5
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
W j
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0
W
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Wp v
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DESCRIPTION
REMARKS
° W
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75
12
54
WEATHERED ROCK, can't be indented with
fingernail, crumbles apart by hand with moderate
difficulty, pervasive orange/brown Fe
staining/oxidization, appears intermediate-felsic,
mica -rich
78': Depth to set 6" casing after weathered
D -
SD-
24
rock that would have yielded auger refusal
reached, set and grouted @ 78' on 3/8/16
80
80-94': Poorly graded sand recovered in upper
80-94': Initially drilled 80-90' but core barrel
moist 3.0' of material recovered, with such poor
was empty when extracted; went back down
recovery, uncertain of where it came from, returns
and overdrilled to 94' to get recovery
to weathered rock for remainder of recovered
material in the core run, sand is light yellowish
brown (2.5Y-6/3)
85
Very poor recovery throughout SC-14 and
SC-15 until reaching rock; true depth of
contact into rock may be off with poor recovery
in SC-15 (may have lost core)
SD -
88
14
90
95
SD-
5
1100
15

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0
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BORING NUMBER GWA-15D
440
Charlotte,
S. Church Street,
NC2802-2075
Suite 900
PAGE
5 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy
Carolinas
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376
PROJECT LOCATION Rowan County NC
W j
c
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0
W
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Wp v
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m O a
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DESCRIPTION
REMARKS
° W
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03
(n Z
of
of
W
100
WEATHERED ROCK, can't be indented with
fingernail, crumbles apart by hand with moderate
difficulty, pervasive orange/brown Fe
staining/oAdization, appears intermediate-felsic,
mica -rich (continued)
Appro)dmate contact @ 103.5'
INTERMEDIATE METAVOLCANIC, strong,
dark -gray and white, aphanitic, foliated
C-1: Moderately decomposed in first 2.0'
105
recovered with heavy orange/brown staining,
and then only slightly decomposed for last 2.5'
(only minor staining), intensely fractured, but
most appear mechanical, lost core can't be
determined with confidence
RC-1
75
110
RC-2: Fresh rock, very minor staining, poor
recovery possibly due to vertical fractures,
drilled with difficulty, bit came out damaged,
did not drill deeper due to fresh rock
110-117': Hole cleaned out multiple times and
cave continued; reasoning for hole cave/rock
cuttings 110-117'
RC-2
115
pH 5.5 SU at 8:30 on 3/10/16 from area where
screen was set
Bottom of borehole at 117.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ���
Appendix A, Sample Photographs
Photo 1 — GWA-15D: Sample SC-1 Depth: 0.0' - 5.5'
OcgegafE GWA IT V
w
Date: 03/05/16
`-w- i�
Photo 2 — GWA-15D: Sample SC-1 Depth: 5.5' - 10.0' Date: 03/05/16
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
19
Photo 3 — GWA-15D: Sample SC-2
Depth: 10.0'-15.0'
Date: 03/05/16
Photo 4 — GWA-15D: Sample SC-2 Depth: 15.0' - 19.0' Date: 03/05/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — GWA-15D: Sample SC-3 Depth: 19.0' - 26.0' Date: 03/05/16
BagEr+cvF GWA-I5D
aIb-3
?�cnvveer as ae
'*Aft: 3f5]Tdo
Photo 6 — GWA-15D: Sample SC-3 Depth: 26.0' - 30.0' Date: 03/05/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
M►4
LL-M— i ■ ■ -Y
Photo 7 — GWA-15D: Sample SC-4
Depth: 30.0' - 40.0'
Date: 03/05/16
"
Photo 8 — GWA-15D: Sample SC-5 Depth: 40.0' - 46.0' Date: 03/05/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
MA 57EAM sTA'rTay =
BORE# +n CWA-15D
5/ r
�
Photo 9 — GWA-15D: Sample SC-6 Depth: 46.0' - 51.0' Date: 03/05/16
S
1. V0'..
Photo 10 — GWA-15D: Sample SC-7 Depth: 51.0' - 54.5' Date: 03/05/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — GWA-15D: Sample SC-8 Depth: 54.5' - 59.5' Date: 03/05/16
IS 17 19
*yty 29 7 1 12 1 3 Gr;
4
Photo 12 — GWA-15D: Sample SC-9 Depth: 59.5' - 64.0' Date: 03/07/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
1 v
Photo 13 — GWA-15D: Sample SC-10 Depth: 64.0' - 69.5'
Date: 03/07/16
Photo 14 — GWA-15D: Sample SC-11 Depth: 69.5' - 73.0' Date: 03/07/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 15 — GWA-15D: Sample SC-12 Depth: 73.0' - 77.5' Date: 03/07/16
Photo 16 — GWA-15D: Sample SC-13 Depth: 77.5' - 80.0' Date: 03/09/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 17 — GWA-15D: Sample SC-13 Depth: 77.5' - 80.0' Date: 03/09/16
Photo 18 — GWA-15D: Sample SC-14 Depth: 80.0' - 94.0' Date: 03/09/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
TEAM SrATTO,
�C7�IA-15 D
8o-9y '
&P N�h�'•9a'ure
�re�ar�9y,
b�4o lojtf (teo47"
Photo 19 — GWA-15D: Sample SC-14 Depth: 80.0' - 94.0' Date: 03/09/16
I
Photo 20 — GWA-15D: Sample SC-15 Depth: 94.0' - 104.0' Date: 03/09/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 21 — GWA-15D: Box 1 of 1 Depth: 103.5' - 117.0' Date: 03/10/16
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BORING NUMBER GWA-17S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 3/1/16 COMPLETED 3/2/16 GROUND ELEVATION HOLE SIZE(S) 10.75, 6, 4.88 inche
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY B. Doran CHECKED BY DATE/TIME ---
NOTES DATE/TIME 3/2/2016 8:45:00 AM 31.60 ft
LL j
a
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0
_Lu
rt
U)
3: H -1
}
>
Y 0�
o
ww
w o
0 zj Q
O w
U0 >
DESCRIPTION
REMARKS
° W
0
aU
m0>
n0
E0
03
g0
UZ
w
w
O
�z
of
0
(CL) CLAY WITH SAND, yellowish red (5YR 5/8),
Hole Size(s):
moist to dry, low plasticity, cohesive (SOIL)
10.75" 0'-10'
6" 10'-34.5'
4.88" 34.5'-39.5'
0' Fe staining throughout boring; 0'-20' Roots
ck
present
(SP-SM) SAND WITH SILT, reddish yellow
(7.5YR 6/6), mottled dark brown (7.5YR 3/4),
moist, non -plastic, non -cohesive, micaceous,
5
SD-1
74
laminated, fine grained sand (SOIL)
(CL) CLAY WITH SAND, red (2.5YR 4/8), wet,
low plasticity, cohesive, micaceous, fine grained
sand (SOIL)
8.4' Perched water encountered
10
10.8' Trace Fe staining
(SM) SILTY SAND, light yellowish brown (10YR
6/4), dry, non -plastic, non -cohesive, micaceous
(SAPROLITE)
15
SD-2
56
20
Continued: Moist
SD-3
53
Continued: Trace gravel, dense
24' Driller noted harder drilling
25

440 S. Church Street, Suite 900
Charlotte, NC2875
Phone:[phone]
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CLIENT Duke Energy Carolinas
PROJECT NUMBER 269376
BORING NUMBER GWA-17S
PAGE 2OF2
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT LOCATION Rowan Countv. NC
W Z
c
o
e
H
HW
ZJ
Y�
C)
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Z�
w
W
dU
Q
j
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DESCRIPTION
REMARKS
OW
p
m0>
UZ
O
W0
w
U
o�
QO
w
0
25
(SM) SILTY SAND, light olive brown (2.5Y 5/4),
25' Sample saturated, but borehole dry to 30'
wet, non -plastic, non -cohesive, micaceous, trace
-
moderately to extremely weathered rock
fragments (SAPROLITE)
SD-4
48
30II 1 I I 1 1 1
nil
1
INTERMEDIATE METAVOLCANIC, strong, bluish 31.5' Fresh, moderately fractured
black (10B 2.5/1) phaneritic, intensely foliated 31.5'-35.2' Joints, 800, tight, Fe stained,
54 with minor felsic bands, gneissic mineralized; Foliation dips at 850
Bottom of borehole at 39.5 feet.
35'-39.5' Joints, 800, tight, Fe stained,
mineralized
Boring Terminated at 39.5'
Screened Interval Set at 28'-38'
Monitoring Well Installed on 3/2/16

1 71�41�
Aw
714
�
7
.� ;+ _ 4.�a. f � ��� r t '. ,.✓ ! +fr sir 1
of � 'r� YT •v � �ti
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44
t

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
$u", Sl EAf9 `TP'IID1
poaltic, % CaWA J} D
SWOL.0 I JC;.3
REGbMCRY� 53_'
t?ATV-: 3111ju
Photo 3 — GWA-17S: Sample SC-3 Depth: 20.0' - 25.0' Date: 03/01/16
Photo 4 — GWA-17S: Sample SC-4 Depth: 25.0' - 30.0' Date: 03/01/16
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BORING NUMBER GWA-18S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
DATE STARTED 1/27/16 COMPLETED 1/30/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling, L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY AT DATE/TIME 2/16/2016 60.00 ft
NOTES 1 DATE/TIME ---
W �
c
o
e
=
} W
H W
U) W
H-
}
Y �
p
z
w_j
00
_j D Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0�
0
�0
U
o3
,20
UZ
W
W
U)O
0
0
See GWA-18D for Lithologic Description
5
10
15
20
25

BORING NUMBER GWA-18S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 6
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w_
0
0 z Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
O
wU
U
o3
UZ
w
LU
�O
0
25
30
35
40
45
50

BORING NUMBER GWA-18S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w_
0
0 z Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
O
wU
U
o3
UZ
w
LU
�O
0
50
55
60
65
70
75

BORING NUMBER GWA-18S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w_
0
0 z Q
j
p>
DESCRIPTION
REMARKS
° W
p
dU
m0>
O
wU
U
o3
UZ
w
LU
�O
0
75
80
85
90
95
1100

BORING NUMBER GWA-18S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 6
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
W �
c
o
e
=
}
HW
to W
H�
}
Y�
p
z
w-,�
Q
j
p>
DESCRIPTION
REMARKS
° W
p
a0
m0�
0
w0
U
o3
�b
UZ
w
LU
O
�
0
100
105
110
115
120
125

440 S. Church Street, Suite 900
F)ICharlotte, NC 2802-2075
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269376
BORING NUMBER GWA-18S
PAGE 6OF6
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT LOCATION Rowan Countv. NC
W j
c
o
0
W
z
v
a
O
DESCRIPTION
REMARKS
OW
Wp
d 0
m O
O
Z
Y
3
0
g�
UZ
w
W
O
0
cQ Z
of
0'
W
Mill
111111011
Bottom of borehole at 138.0 feet.
Boring terminated at 138', screened interval
set at 127'-137', monitoring well installed
1/30/16 .:

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-18S: Sample SC-6 Depth: 60.0' - 70.0' Date: 01/29/16
Photo 2 — GWA-18S: Sample SC-7 Depth: 70.0' - 80.0' Date: 01/29/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — GWA-18S: Sample SC-8
Uaiq Gvp
W.4-185
46 ;
Depth: 80.0' - 90.0' Date: 01 /29/16
Photo 4 — GWA-18S: Sample SC-9 Depth: 90.0' - 100.0' Date: 01/29/16
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BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 1/15/16 COMPLETED 1/30/16 GROUND ELEVATION HOLE SIZE(S) 8, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
LL j
a
C
o
0
_Lu
rt
U)
3: H -1
}
>
Y 0�
o
ww
w o
0 zj Q
O w
U0 >
DESCRIPTION
REMARKS
° W
0
aU
m0>
n0
E0
03
g0
UZ
w
w
O
�z
of0
(CL) CLAY, red (2.5YR 4/6), moist, medium
Hole Size(s):
plasticity, cohesive (SOIL)
8" 0'-139'
5" 139'-155'
0'-5' Hand augered
AU-1
60
(CL) SANDY CLAY, red (2.5YR 4/6), moist,
medium plasticity, cohesive (SOIL)
5
(ML) SILT WITH SAND, red (2.5YR 4/8), moist,
non -plastic, non -cohesive, slightly micaceous
(SOIL)
SD-1
60
10
15
SD-2
120
(ML) SANDY SILT, light yellowish brown (10YR
6/4), moist, non -plastic, non -cohesive
(SAPROLITE)
20
25

BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
a
C
o
0
_uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U)z0
a
25
(ML) SANDY SILT, light yellowish brown (10YR
25' Few 1" clay seams
6/4), moist, non -plastic, non -cohesive
(SAPROLITE) (continued)
30
(ML) SILT WITH SAND, yellowish brown (10YR
5/4), moist, non -plastic, non -cohesive
(SAPROLITE)
35
SD-4
120
40
45
SD-5
120
50

BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
a
C
o
0
_uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U)z0
a
50
(ML) SILT WITH SAND, yellowish brown (10YR
5/4), moist, non -plastic, non -cohesive
(SAPROLITE) (continued)
55
SD-6
120
60
65
SD-7
120
Continued: yellowish brown (10YR 5/4)
(ML) SANDY SILT, yellowish brown (10YR 5/4),
70
moist, non -plastic, non -cohesive (SAPROLITE)
75

BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 7
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
a
C
8
0
_uj
rr
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U)z0
a
75
(ML) SANDY SILT, yellowish brown (10YR 5/4),
moist, non -plastic, non -cohesive (SAPROLITE)
(continued)
78'-79' Driller noted drastic change in
hardness of drilling
80
80' Sample holds shape instead of crumbling
(ML) SILT WITH SAND, light olive brown (2.5Y
5/3), moist, non -plastic, non -cohesive
apart
(SAPROLITE)
85
SD-9
120
90
94'-97' Abundant white powdery substance
95
SD-
10
120
present in sample
100

BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 5 OF 7
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
a
C
o
0
_uj
rt
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
g�
UZ
w
w
O
o3
0
U)z0
a
100
(ML) SILT WITH SAND, light olive brown (2.5Y
5/3), moist, non -plastic, non -cohesive
(SAPROLITE) (continued)
105
SD -
11
120
(ML) SANDY SILT, light olive brown (2.5Y 5/4),
dry, non -plastic, non -cohesive (SAPROLITE)
(ML) SILT WITH SAND, dark yellowish brown
(10YR 4/4), moist, non -plastic, non -cohesive
(SAPROLITE)
110
115
SD -
12
120
120
125
SD -

BORING NUMBER GWA-18D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 6 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
a
C
o
0
_uj
rr
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
O w
p>
DESCRIPTION
REMARKS
° W
0
aU
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
U) z0
af
of
125
(ML) SILT WITH SAND, dark yellowish brown
(10YR 4/4), moist, non -plastic, non -cohesive
(SAPROLITE) (continued)
130
Continued: olive brown (2.5Y 4/3)
SD-
36
14
(SW-SM) SAND WITH SILT, dark gray (5Y 6/6),
moist, non -plastic, non -cohesive (SAPROLITE)
SD-
36
MAFIC METAVOLCANIC, strong, very dark gray
(5Y 4/1), aphanitic to phaneritic, slightly foliated,
135
15
134.5' Sharp, 45° contact
fresh (WEATHERED/FRACTURED ROCK)
SD-
36
137' 6" PVC casing installed and grouted to
16
surface
140
RC-1
58
142.5' Joint, 601, rough, clean
145
144.5'-145' 3 Joints, 601, rough, clean
i..
.z
150

440 S. Church Street, Suite 900
F)I Charlotte, NC 2875
Phone:[phone]
6700
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas
PROJECT NUMBER 269376
BORING NUMBER GWA-18D
PAGE 7OF7
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT LOCATION Rowan Countv. NC
W Z
c
o
e
H
HW
ZJ
Y�
C)
z
z�
w
W
dU
Q
j
p>
DESCRIPTION
REMARKS
OW
p
QO
m0>
UZ
O
w
W0
w
U
0
o�
150
MAFIC METAVOLCANIC, strong, very dark gray
(5Y 4/1), aphanitic to phaneritic, slightly foliated,
-
fresh (WEATHERED/FRACTURED ROCK)
(continued)
152' Shear zone, 450, clean, undulating
••z
A
Boring Terminated at 155'
Screened Interval Set at 148'-153'
Monitoring Well Installed on 1/30/16
Bottom of borehole at 155.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-18D: Sample SC-1 and SC-2 Depth: 0.0'-20.0' Date: 01/15/16
Photo 2 — GWA-18D: Sample SC-1 to SC-5 Depth: 0.0'-50.0' Date: 01/15/16
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — GWA-18D: Sample SC-14 Depth: 130.0' - 133.0' Date: 01/19/16
Photo 4 — GWA-18D: Sample SC-15 Depth: 133.0' - 136.0' Date: 01/19/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
�^ �TYnM ��.5�I3lv'{roM
Photo 5 — GWA-18D: Box 1 of 1 Depth: 134.5' - 155.0' Date: 01/28/16
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BORING NUMBER GWA-19S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 2/13/16 COMPLETED 2/12/16 GROUND ELEVATION HOLE SIZE(S) 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY DATE/TIME 2/13/2016 10:20:00 AM 40.00 ft
NOTES 1 DATE/TIME ---
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GP) GRAVEL and topsoil, (FILL)
0'-5' Hand augered to clear utilities
(ML) SILT WITH SAND, red (2.5YR 4/8), moist,
low plasticity, cohesive (SOIL)
AU-1
(SP) SAND, red (2.5YR 5/8), moist, non -plastic,
non -cohesive (SOIL)
Continued: Reddish yellow (5YR 7/6), dry
5
Continued: Red (2.5YR 4/8), moist
SD-1
60
Continued: Reddish yellow (5YR 7/6), dry
Dry from 7-40'
Continued: Pinkish white (5YR 8/2), dry
Continued: Reddish yellow (5YR 7/6), dry
10
Continued: Very pale brown (10YR 8/3)
Continued: Reddish yellow (5YR 7/6)
15
SD-2
120
Continued: Very pale brown (10YR 8/3)
(ML) SILT, white, pink, brown, dark brown, and
20
pale brown, dry, non -plastic, non -cohesive
(SAPROLITE)
(ML) SILT WITH SAND, pale red (2.5YR 7/2),
dry, non -plastic, non -cohesive (SAPROLITE)
25

BORING NUMBER GWA-19S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 2
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
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DESCRIPTION
REMARKS
° W
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(ML) SILT WITH SAND, pale red (2.5YR 7/2),
dry, non -plastic, non -cohesive (SAPROLITE)
(continued)
30
Continued: Pinkish white (2.5YR 8/2)
30'-34' Sample begins to maintain structure,
difficult to crumble by hand
SD-4
60
35
35'-40' Gravel in sample is weathered rock
(ML) SILT WITH GRAVEL, white (2.5YR 8/1),
dry, non -plastic, non -cohesive
(SAPROLITE/WEATHERED ROCK)
SD-5
60
40
(SP) SAND, light yellowish brown (10YR 6/4),
wet, non -plastic, non -cohesive
(SAPROLITE/WEATHERED ROCK)
(SP) SAND WITH GRAVEL, pinkish gray (7.5YR
6/2), moist, non -plastic, non -cohesive
(SAPROLITE/WEATHERED ROCK)
(ML) SILT WITH GRAVEL, pinkish white (2.5YR
8/2), dry, non -plastic, non -cohesive
(SAPROLITE/WEATHERED ROCK)
45
SD-6
120
(SP-SM) SAND WITH SILT AND GRAVEL, pale
brown (2.5Y 7/4), dry, non -plastic, non -cohesive
(SAPROLITE/WEATHERED ROCK)
(ML) SILT, pale olive (10Y-5Y 6/4), moist, low
plasticity, cohesive (SAPROLITE/WEATHERED
Boring Terminated at 50'
ROCK)
Screened Interval Set at 39.8'-49.8'
50
Monitoring Well Installed on 2/13/16
Bottom of borehole at 50.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
BUCK STEAM SMT16N
f
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Photo 1 — GWA-19S: Sample SC-1 Depth: 0.0' - 1.0' Date: 02/13/16
Photo 2 — GWA-19S: Sample SC-1 Depth: 5.0'-10.0' Date: 02/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
b
Photo 3 — GWA-19S: Sample SC-2 Depth: 10.0' - 20.0' Date: 02/13/16
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Photo 4 — GWA-19S: Sample SC-3 Depth: 20.0' - 30.0' Date: 02/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 5 — GWA-19S: Sample SC-4 Depth: 30.0' - 35.0' Date: 02/13/16
Photo 6 — GWA-19S: Sample SC-5 Depth: 35.0'-40.0' Date: 02/13/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 7 — GWA-19S: Sample SC-6 Depth: 40.0' - 50.0' Date: 02/16/16
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BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 2/13/16 COMPLETED 2/19/16 GROUND ELEVATION HOLE SIZE(S) 9, 5, 4 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
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DESCRIPTION
REMARKS
° W
0
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03
g0
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See GWA-19S for Lithologic Description 0'-50'
Hole Size:
9" 0'-85'
5" 85-95'
4" 95'-105'
5
10
15
20
25

BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 5
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County, NC
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REMARKS
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See GWA-19S for Lithologic Description 0'-50'
30
35
40
45
50

BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 3 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
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REMARKS
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0
0-
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50
(ML) SILT WITH SAND, dark grayish green (5GY
4/2), moist, low plasticity, cohesive, some gravel
(SAPROLITE)
Continued: Yellowish brown (10YR 5/6)
54-54.5' - Continued: 0.5' thick layer of weathered
55
SD-1
108
rock, weak, white (5Y 8/1), phaneritic
60
(ML) SILT, pale brown (10YR 6/3), dry,
non -plastic, non -cohesive (SAPROLITE)
65
SD-2
120
70
Continued: Olive brown (2.5Y 4/3)
70'-79' Driller noted multiple zones of hard
drilling. Stopped SC-3 run at 79' due to 1' thick
lens.
72'-74' Gravel is felsic in nature, very strong,
(CH) GRAVELLY CLAY, olive (5Y 5/3), moist,
high plasticity, cohesive (SAPROLITE)
and phaneritic
SD-3
108
(ML) SILT, olive brown (5YR 5/3), dry,
75
non -plastic, non -cohesive (SAPROLITE)

BORING NUMBER GWA-19D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 5
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
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REMARKS
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5.5-80': Maintains partial structure but can be
(ML) SILT, dark grayish green (5GY 4/2),
non -plastic, non -cohesive (SAPROLITE)
crumbled by hand to a powder (silt
classification non -plastic, possible dike)
78.5': Gravel at end of SC-3, color also begins to
brown slightly. Stays brown/grayish green until 80'
80
(CL) SANDY CLAY WITH GRAVEL, dark grayish
olive (10Y 4/2), wet, medium plasticity, cohesive
(SAPROLITE)
SD-4
60
(ML) SILT WITH GRAVEL, olive brown (2.5Y
4/3), moist, non -plastic, non -cohesive
(SAPROLITE)
83' Gravel content increases drastically
84' 6" PVC Casing installed and grouted to
FELSIC METAVOLCANIC, strong, pinkish gray
85
(7.5YR 6/2), phaneritic, massive, fresh
(WEATHERED/FRACTURED ROCK)
surface on 2/17/16
84'-87' Trace Fe and Mn staining
85'-86' Intensely fractured
86'-87' Very intensely fractured
86' Joint, 0° open, Fe and Mn stained
(ML) SILT, light olive brown (2.5Y 5/3), moist,
RC - 1
100
non -plastic, non -cohesive (SAPROLITE)
90
MAFIC METAVOLCANIC, strong, black (N2.5),
phaneritic to aphanitic, foliated, schistose
(WEATHERED/FRACTURED ROCK), possible
dike
91.2'-100' Trace Fe and Mn staining
FELSIC METAVOLCANIC, strong, pinkish gray
(7.5YR 6/2), phaneritic, massive, fresh, minor
Fe/Mn staining on joints
(WEATHERED/FRACTURED ROCK)
Driller notes lost core was after mafic dike in
fractured zone (did not drill through soft
saprolite continued from previous run). 55°
95
RC-2
62
joints along foliation plans at 90' and 91.2'
100

440 S. Church Street, Suite 900
F)ICharlotte, NC 2802-2075
Phone:[phone]
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CLIENT Duke Energy Carolinas
PROJECT NUMBER 269376
BORING NUMBER GWA-19D
PAGE 5OF5
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT LOCATION Rowan Countv. NC
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REMARKS
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100
MAFIC METAVOLCANIC, strong, black (N2.5),
phaneritic to aphanitic, foliated, schistose
(SOUND ROCK)
FELSIC METAVOLCANIC, strong, pinkish gray
RC-3
100
(7.5YR 6/2), phaneritic, massive, fresh (SOUND
ROCK)
oring Terminated at 105'
Screened Interval Set at 86.8'-91.8'
105
Monitoring Well Installed on 2/19/16
Bottom of borehole at 105.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-19D: Sample SC-1
is �s7-71
71
Depth: 50.0' - 60.0' Date: 02/16/16
Photo 2 — GWA-19D: Sample SC-2 Depth: 60.0'-70.0' Date: 02/16/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment L—U%"j
Appendix A, Sample Photographs
F
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Photo 3 — GWA-1911): Sample SC-3 Depth: 70.0' - 79.0' Date: 02/16/16
Photo 4 — GWA-1911): Sample SC-4 Depth: 79.0' - 85.0' Date: 02/16/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
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BORING NUMBER GWA-20S
440 S. Church Street, Suite 900
Charlotte, NC28202-2075
PAGE 1 OF 1
Phone:[phone]
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CLIENT Duke Energy Carolinas
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376
PROJECT LOCATION Rowan County NC
DATE STARTED 2/12/16 COMPLETED 2/12/16
GROUND ELEVATION HOLE SIZE(S)
5 inches
DRILLING CONTRACTOR Cascade Drilling L.P.
NORTHING EASTING
DRILLING METHOD Sonic
GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY
DATE/TIME ---
NOTES
DATE/TIME ---
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DESCRIPTION
REMARKS
° W
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See GWA-20D for Lithologic Description
5
Boring Terminated at 15.5'
r.'
10
15
Screened Interval Set at 4'-14'
Monitoring Well Installed on 2/12/16
Bottom of borehole at 15.5 feet.

BORING NUMBER GWA-20D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 2
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 2/11/16 COMPLETED 2/20/16 GROUND ELEVATION HOLE SIZE(S) 9, 5 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY O. Brown CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
LL j
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0
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DESCRIPTION
REMARKS
° W
0
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03
g0
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w
w
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0
(SP-SM) SAND WITH SILT, dark brown (10YR
Hole Size(s):
3/3), moist, non -plastic, non -cohesive (SOIL)
9" 0'-43.5'
5" 43.5-49'
(CL) CLAY WITH SAND, dark yellowish brown
(10YR 4/6), moist, medium plasticity, cohesive
0'-5' Hand augered to clear utilities
(SOIL)
AU-1
(CH) CLAY, yellowish brown (10YR 5/8), moist,
high plasticity, cohesive (SOIL)
5
SD-1
24
Sharp contact at 9.5'
(SM) SILTY SAND, olive yellow (5Y 6/6) and dark
grayish brown (2.5Y 5/2), wet, non -plastic,
10
9.5' Presence of water very apparent, water
level stabilized at 4.5' after leaving hole open
non -cohesive (SOIL)
(SP-SM) SAND WITH SILT AND GRAVEL, light
olive brown, (2.5Y 5/6), wet, non -plastic,
non -cohesive (SOIL)
(SP-SM) SAND WITH SILT, light olive brown,
15
SD-2
120
(2.5Y 5/6), wet, non -plastic, non -cohesive (SOIL)
20
25

BORING NUMBER GWA-20D
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 2 OF 2
Phone:[phone]
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CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
a
C
o
0
_uj
rt
U)
3: H
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>
Y
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w 0
� zj Q
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DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
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g�
UZ
w
w
O
0
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a
25
(SP-SM) SAND WITH SILT, light olive brown,
(2.5Y 5/6), wet, non -plastic, non -cohesive (SOIL)
(continued)
Sharp contact at 29'
(ML) SANDY SILT, dark yellowish brown (10YR
9'-30' Fist sized cobbles present
30
4/4), moist, low plasticity, cohesive (SAPROLITE)
SD-4
60
34'-35' Fist sized cobbles present
35
(ML) SANDY SILT, dark yellowish brown (10YR
4/6), moist, non -plastic, non -cohesive
35.5' 6" PVC casing installed and grouted to
(SAPROLITE/WEATHERED ROCK), Interbeds of
surface on 2/12/16
rock are 0.5' to 1.0' thick, some lithology as below
;
39.5'
SD-5
54
40
INTERMEDIATE METAVOLCANIC, strong, very
dark greenish gray (10Y 3/1), massive, fresh
(WEATHERED/FRACTURED ROCK)
SD-6
33.E
45
RC-1
73
Boring Terminated at 49'
Screened Interval Set at 37.7'-42.7'
Monitoring Well Installed on 2/20/16
Bottom of borehole at 49.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — GWA-20D: Hand Auger Depth: 0.0' - 5.0' Date: 02/11/16
Photo 2 — GWA-20D: Sample SC-1 Depth: 5.0' - 10.0' Date: 02/11/16
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Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 3 — GWA-20D: SC-2 Depth: 10.0' - 20.0' Date: 02/11/16
Photo 4 — GWA-20D: SC-3 Depth: 20.0' - 30.0' Date: 02/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
BCFF urc
QFen E ev
Photo 5 — GWA-20D: Sample SC-4 Depth: 30.0' - 35.0' Date: 02/11/16
Photo 6 — GWA-20D: SC-5 Depth: 35.0' - 39.5' Date: 02/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 7 — GWA-20D: SC-6 Depth: 39.5' - 43.5' Date: 02/11/16
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BORING NUMBER MW-6BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 1 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
DATE STARTED 1/21/16 COMPLETED 2/10/16 GROUND ELEVATION HOLE SIZE(S) 6 inches
DRILLING CONTRACTOR Cascade Drilling L.P. NORTHING EASTING
DRILLING METHOD Sonic GROUND WATER LEVELS:
LOGGED BY B. Doran CHECKED BY DATE/TIME ---
NOTES DATE/TIME ---
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DESCRIPTION
REMARKS
° W
0
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03
g0
UZ
w
w
O
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of
0
(ML) SANDY SILT WITH GRAVEL, soft, dark
reddish brown (5YR 3/4), moist, low plasticity,
cohesive, trace clay, organic rich (SOIL)
Sonic Drilling 4" sampler, 6" sonic (0-109.5')
casing. All densities are estimated. From 0' Fe
staining throughout
AU-1
— — — — — — — — — — — — — — — — — — — —
(ML) SANDY SILT, soft, yellowish red (5YR 5/8),
wet, non -plastic, non -cohesive, micaceous, Mn
5
nodules (SOIL)
0-110': Reamed with 9" casing (to set 6" PVC
casing); 110-113': 8" core bit; 113-116': 3"
core bit, chased with 5" casing
Large Mica crystals associated with Mn
Nodules and lenses
SD-1
61
0-141.9': Grout
10
Increasing silt with depth
1.0'- transitional over —2'--------J
(ML) SILT WITH SAND, soft to medium, yellowish
red (5YR 5/8), wet, non -plastic, non -cohesive,
SD-2
60
micaceous, Mn nodules, relic wavy foliation and
rock texture (SAPROLITE)
15
SD-3
45
From 19.0': relic rock texture is very distinct,
20
mottled Fe staining, less extensive
From 20': Mn absent
SD - 4
38
From 22.0': As above, medium, strong brown
(7.5YR 5/6), sand becoming coarser
25

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BORING NUMBER MW-6BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 2 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
W j
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0
W
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Wv
d 0
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m O a
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0 O
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DESCRIPTION
REMARKS
° W
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p
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w
W
U
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03
In Z
of
of
25
(ML) SILT WITH SAND, soft to medium, yellowish
red (5YR 5/8), wet, non -plastic, non -cohesive,
micaceous, Mn nodules, relic wavy foliation and
rock texture (SAPROLITE) (continued)
From 26.0': As above, medium to stiff, light
SD-5
62
yellowish brown (2.5Y 6/4) and yellowish brown
(10YR 5/4)
30
From 29.5': As above, soft, light olive brown (2.5Y
5/4), mottled strong brown (7.5YR 4/6), fine to
medium -grained sand
SD-6
60
35
From 37.3': As above, medium, light yellowish
SD-7
55
brown (2.5Y 6/4), mottled strong brown (7.5YR
5/8), medium grained sand
40
From 41.0': As above, pale brown (2.5Y 7/3) and
black (2.5Y 2.5/1)
SD-8
58
From 42.8': As above, olive brown (2.5Y 4/4), fine
grained sand
45
SD-9
60
From 49.2': As above, dense
50

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BORING NUMBER MW-6BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 3 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
W j
c
o
0
W
z
Wv
d 0
>
m O a
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0 O
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DESCRIPTION
REMARKS
° W
z
p
QO
UZ
w
W
U
O
03
U) Z
of
0'
W
50
(SP-SM) POORLY GRADED SAND WITH SILT,
loose to medium dense, black (2.5Y 2.5/1) and
Grayish Brown (10YR 5/2), wet, non -plastic,
non -cohesive, micaceous, some Fe staining
(SAPROLITE) (continued)
SD-
60
51.0-52.0': Mn and Fe nodules of fine to medium
10
gravel
52.5': As above, dark grayish brown (10YR 4/2)
55
SD -
65
11
(ML) SILT WITH SAND, medium dense, dark
yellowish brown (10YR 4/4), wet, non -plastic,
non -cohesive, micaceous, continued mottled Fe
60
staining (SAPROLITE)
59.0-59.4': Seam of (CL) CLAY WITH GRAVEL,
medium to stiff, dark brown (10YR 3/3), medium
plastic, wet, cohesive, fine to coarse -grained
angular gravel
transitional over 3'
12
72
— -- -- — — — — — — --
(SW-SM) WELL GRADED SAND WITH SILT,
medium dense to dense, dark yellowish brown
(10YR 414), wet, non -plastic, non -cohesive
(SAPROLITE)
65
From 67.5': As above, dense
SD -
13
53
70
SD-
69
14
From —74': Difficult drilling
75

BORING NUMBER MW-6BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 4 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
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0
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DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
o3
g�
UZ
w
w
O
0
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a
75
(SW-SM) WELL GRADED SAND WITH SILT,
Difficulty extracting sample from barrel
medium dense to dense, dark yellowish brown
(10YR 4/4), wet, non -plastic, non -cohesive
(SAPROLITE) (continued)
SD-
70
15
80
(SW) WELL GRADED SAND, dense to very
dense, brown (10YR 4/3), moist, non -plastic,
non -cohesive, trace fine gravel (SAPROLITE)
SD-
66
16
85
SD-
56
17
From 89': As above, very dark grayish brown (10YR
90
3/2)
SD-
57
18
From 94.2': As above, mottled dark yellowish
Mottled Fe staining
95
brown, mottled Fe staining (10YR 4/6)
SD-
65
19
100

BORING NUMBER MW-6BR
440 S. Church Street, Suite 900
Charlotte, NC2802-2075 PAGE 5 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
W j
c
o
0
W
z
Wp v
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
QO
UZ
w
W
U
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o3
(n Z
of
0'
W
100
(SW) WELL GRADED SAND, dense to very
dense, brown (10YR 4/3), moist, non -plastic,
non -cohesive, trace fine gravel (SAPROLITE)
(continued)
- 20
57
INTERMEDIATE METAVOLCANIC, strong, bluish
black (1013 2.5/1) and white (8.5/N) phaneritic,
massive
Interbedded with (SW) WELL GRADED SAND, very
dense, dark grayish brown (10YR 4/3), Dry to
105
Moist, Non -plastic, Non -cohesive, trace gravel
(WEATHERED ROCK)
103.2-103.8, 104.2-105.0 (SW)
105-106.4': Pulverized rock
SD-
21
54
- 108.5': Last well graded sand interbed and/or
weathered rock
110
09.5' - Transitional Contact
09.5-113': Labeled "Sonic-22" rather than RC
because rock drilled only to overdrill for 6" PVC
MAFIC VOLCANIC, strong, very dark gray
(GLEY1-3/N), phaneritic, massive
casing install
SD-
22
42
INTERMEDIATE METAVOLCANIC, strong, black
114': Joint, 651, light staining, rough
115
(5Y 2.5/1) and light gray (GLEY1 7/N) phaneritic,
massive, slightly fractured
RC-1
82
117', 117.3', 1185: Shears, 150, greenish
oxidation/staining, undulating, dry with staining
120
RC-2: No natural fractures apparently, broken
core due to mechanical forces, no staining
RC-2 was re -drilled after first attempt to extract
core failed. Overdriving caused poor
recovery/RQD
125

BORING NUMBER MW-6BR
440 S. Church Street, Suite 900
Charlotte, NC28202-2075 PAGE 6 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy Carolinas PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376 PROJECT LOCATION Rowan County NC
LL j
a
C
o
0
_uj
rr
U)
3: H
}
>
Y
o
ww
w 0
� zj Q
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DESCRIPTION
REMARKS
° W
0
0-
m0><no
a�O
U
o3
g�
UZ
w
w
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0
U)z0
a
125
INTERMEDIATE METAVOLCANIC, strong, black
(5Y 2.5/1) and light gray (GLEY1 7/N) phaneritic,
massive, slightly fractured (continued)
130
C-3: 0.6' of lost core interpreted at bottom of
run where core may have broken off slightly
higher
133.5': Becomes noticeably more coarse -grained,
still strong massive
135
RC-3
94
135.3': Shear, 20°, tight, greenish, mineralized
coating
140
140.0': Becomes even more coarse -grained than
133.5-140'
145
RC-4
90
144.7': Joint, 25°, tight, slight white, powdery
mineralized coating; appears a mechanically
induced fracture along healed fracture
146.8-148': Core becomes intensely fractured,
orange/brown Fe -oxidized stains
148-149': Core is very intensely fractured,
Lost core in RC-4 interpreted at end of run
orange/brown, Fe -oxidation stains and
from 146.8-150'
mineralization, continues to 152'
150

a
z
O
L
0
0
a
U
H
U
O
a
Y
U
BORING NUMBER MW-6BR
440
Charlotte,
S. Church Street,
NC2802-2075
Suite 900
PAGE
7 OF 7
Phone:[phone]
hdrinc.com/follow-us
CLIENT Duke Energy
Carolinas
PROJECT NAME Buck - Post CSA Additional Assessment
PROJECT NUMBER 269376
PROJECT LOCATION Rowan County NC
W j
c
o
0
W
z
Wv
d 0
>
m O a
O
0 O
Y
DESCRIPTION
REMARKS
° W
p
QO
UZ
w
W
U
O
o3
In Z
of
of
150
INTERMEDIATE METAVOLCANIC, strong, black
50-150.5': Blue, green, brown, orange
(5Y 2.5/1) and light gray (GLEY1 7/N) phaneritic,
colored mineralization (heavy) (continuation of
massive, slightly fractured (continued)
148-149')
150.5-155': Vertical (00), Shear, tight, green
mineralization
....:
152': Intermediate metavolcanic becomes more fine
grained again (as was up to 1335); 152-157':
Sand below screen
:
155
RC-5: Lost core interpreted at bottom of hole
due to continued coarse -grained textures and
heavy mineralization and staining from end of
RC-4 into RC-5; and continuous vertical shear
from 150.5-155'
RC-5
79
157-165': Bentonite backfill
160
With exception of 1xvertical joint, all other
breaks in last 4' of core are mechanical
fractures
Set well and grouted 2/10/16
165
Bottom of borehole at 165.0 feet.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 1 — MW-6BR: Sample SC-1 Depth: 5.0' - 10.0' Date: 01/21/16
Photo 2 — MW-6BR: Sample SC-2 Depth: 10.0' - 15.0' Date: 01/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

v
r
-
r]t
A ram, .�°[�,♦. �ny�'-�.� _ -��_i� J:.. �,.v *1 s,i :�
_ ,•7.
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;
s �����.

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
FrI
Photo 5 — MW-6BR: Sample SC-5 Depth: 25.0' - 30.0' Date: 01/21/16
Photo 6 — MW-6BR: Sample SC-6 Depth: 30.0' - 35.0' Date: 01/21/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 7 — MW-6BR: Sample SC-7 Depth: 35.0' - 40.0' Date: 01/21/16
(
Photo 8 — MW-6BR: Sample SC-8 Depth: 40.0' - 45.0'
µirk( ire .tid.ti-��
Date: 01 /21 /16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

4

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 11 — MW-6BR: Sample SC-11 Depth: 55.0' - 60.0' Date: 01/21/16
Photo 12 — MW-6BR: Sample SC-12 Depth: 60.0' - 65.0' Date: 01/25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 13 — MW-6BR: Sample SC-13
�;ri J'I viir.
- g _,A
Photo 14 — MW-6BR: Sample SC-14
Depth: 65.0' - 70.0'
.W. 1 1
Date: 01 /25/16
Depth: 70.0' - 75.0' Date: 01/25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
Photo 15 — MW-6BR: Sample SC-15
-f R
NId ' J
Depth: 75.0' - 80.0'
- I
Photo 16 — MW-6BR: Sample SC-16 Depth: 80.0' - 85.0'
Iffr -' If
Date: 01 /25/16
IC
Date: 01/25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
JM
1
Photo 17 — MW-6BR: Sample SC-17 Depth: 85.0' - 90.0' Date: 01/25/16
r.
141F _ AIL.
Photo 18 — MW-6BR: Sample SC-18
Moll—
''e
Depth: 90.0' - 95.0'
Date: 01/25/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
IR, • .. �! t
Photo 19 — MW-6BR: Sample SC-19 Depth: 95.0' - 100.0' Date: 01/25/16
.. 60RVl16 . �M W ��lelSk i
., a"cco ceu6�s i�5
Photo 20 — MW-6BR: Sample SC-20 Depth: 100.0' - 105.0' Date: 01/26/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
- Y�
DORINp: IiN/-cna�
x `
.,j _
DEPrN: 4ai.5.
R ECOYCRY:f38/Y s0q
'a!
-
.
-
-
-�
Photo 21 — MW-6BR: Sample SC-21
Dine Energy �, �-�.
Q)uck 5�am `�Fu}ion (Dnt} 1!3 - l�b .
$arin�lb hi 613ii �cmverp: Yl,')/
�tti 1133 — 1�4Zbs 7W
Depth: 105.0' - 109.5'
< Ty 731
Ob, -31, =0
-,CeMandes eF r�dn m
next bel.
�Ir
Date: 01 /26/16
r
Photo 22 — MW-6BR: Box 1 of 5 Depth: 113.0'-124.0' Date: 02/10/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
�Rati '- lti�vCr� Zewy.,y:44
;�, Rc��:947
Ick iwPalxF
nag my.
1 13W+
2
Photo 2 — MW-6BR: Box 2 of 5
Rc-3 RC-q
130- (40'
44 % IZ�146
1 ` 1 4oY
Cl t>'9'�i
Depth:124.0'-136.3' Date:02/11/16
ey
ad�
3i. s' . h)
Photo 3 — MW-6BR: Box 3 of 5 Depth: 136.3' - 146.7' Date: 02/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]

Duke Energy Carolinas, LLC I Buck Steam Station - CSA Groundwater Assessment ��
Appendix A, Sample Photographs
il�E EfiERGY
b.lik (ATAGAP
^� MW
(�/
IK0 150'
/;o'-1(6
W&7-157'
K«v«y: 901
Reen�<7 9l
,,1. 5
Kai �,vt
Rib o 57/
I
02.11.201
Photo 4 — MW-6BR: Box 4 of 5 Depth: 146.7' - 157.0' Date: 02/11/16
.Nw6
MW we
rs7' )� r �.�� y : 79% a
a a� K06 57/ •
Photo 5 — MW-6BR: Box 5 of 5 Depth: 157.0' - 165.0' Date: 02/11/16
hdrinc.com 440 S Church Street, Suites 900 & 1000, Charlotte, NC 28202-2075
[phone]