NC0000396_Offsite Assessment Boring Logs_20150823

PROJECT: Asheville Steam Plant
WELL / BORING NO: AMW-1 B
PROJECT NO: 1026.02.23
STARTED: 6/16/14 COMPLETED: 6/24/14
DRILLING COMPANY: Geologic Exploration
NORTHING: 641961.05 EASTING: 944768.25
DRILLING METHOD: DPT/Rock Core/Air Rotary/Air Hammer
ELEVATION 2080.53 ft MSL M.P. ELEV: 2083.58 ft MSL
BOREHOLE DIAMETER: 6"/10" IN
WATER: 40.78 ft TOC TOTAL DEPTH: 64.0 ft BGS
NOTES: 2" PVC Slotted Screen and Risers
LOGGED BY: T. Plating CHECKED BY: K. Webb
a
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DESCRIPTION
a
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WELL
WW
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Q
W—
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CONSTRUCTION
U
U
U
SM
SAND, silty, fill material, dark reddish brown, some
50
gravel, moist.
5
SILT, sandy, light brown, elastic, sand lenses and
MH
weathered material throughout, dark gray/black organic
50
-6" I.D. PVC Surface
layer @ 10' bgs, woody debris.
Casing, set at 30' bgs.
10
SAND, silty, light brown, some coarse sand from 10' to
ML
12' bgs, some gravel, interbedded sands, beginning to
80
reflect relict structure, wet at 10' bgs, less moist at
12-15' bgs.
15
Cement Grout
SILT, sandy, light gray with red mottling, highly
ML
weathered saprolite, dry at 16' bgs, becoming more
i
moist to 20' bgs.
20
CH
CLAY, brown.
light gray with red to brown mottling, highly _
CHCLAY,
SM
weathered sa rolite
SAND, light gray with red to brown mottling, highly
250z
weathered saprolite, increased oxidation, poorly grade
sand with some silt.
RK
DPT Refusal at 23' bgs.
"
MGN: Mica -Gneiss, gray.
i
30
—4" Borehole
-
MGN: Mica -Gneiss, hard, fine to medium grained,
closely spaced fractures, quartz, muscovite, biotite,
RK
plagioclase, mica gneiss / augen gneiss with abundant
94
35
pyrite, horizontal to shallow dipping fractures, notable
fresh fractures at 30'6", 314", and 32' bgs._
Cement Grout
RK
MGN: Mica -Gneiss, hard, fine to medium grained,
i closely spaced fractures, quartz, muscovite, biotite,
&.1-20-
plagioclase, mica gneiss / augen gneiss with abundant
40pyrite,
horizontal to shallow dipping fractures, quartz
I bearing vein encountered.
RK
MGN: Mica -Gneiss, hard, fine to medium grained,
95
=
closely spaced fractures, quartz, muscovite, biotite,
Bentonite
45
plagioclase, mica gneiss / augen gneiss with abundant
-"
pyrite, horizontal to shallow dipping fractures, notable
_
fresh fractures at 44'5" bgs, possible fractures at 41'6"
—and 38'7" bgs.
2" I.D. PVC Risers
MGN: Mica -Gneiss, hard, fine to medium grained,
50
_ "
closely spaced fractures, quartz, muscovite, biotite,
plagioclase, mica gneiss / augen gneiss with abundant
RK
pyrite, horizontal to shallow dipping fractures, notable
100
fractures close spaced between 47'-49' and 49'-51' bgs,
closely spaced at 49' bgs, and moderately closely
Sand Filter Pack
55—very
-
spaced between 51'-57' bgs.
---------------------------
MGN: Mica -Gneiss, hard, fine to medium grained,
closely spaced fractures, quartz, muscovite, biotite,
78
2" I.D. Slotted PVC
60—
plagioclase, mica gneiss / augen gneiss with abundant
Screen
RK
pyrite, horizontal to shallow dipping fractures, no
"
fractures from 57'-61'1" bgs, clay rich fault gouge, 2"
thick, very dark gray, moderately plastic, and saturated
-"
at 61'1" bgs.
65
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
PhoTerra n864-679-3711
Fax: PAGE 1 OF 1

PROJECT: Asheville Steam Plant
WELL / BORING NO: AMW-2A
PROJECT NO: 1026.02.23
STARTED: 6/26/14 COMPLETED: 6/26/14
DRILLING COMPANY: Geologic Exploration
NORTHING: 642100.64 EASTING: 945131.56
DRILLING METHOD: Air Rotary
ELEVATION 2104.95 ft MSL M.P. ELEV: 2107.93 ft MSL
BOREHOLE DIAMETER: 6" IN
WATER: 22.45 ft TOC TOTAL DEPTH: 30.0 ft BGS
NOTES: 2" PVC Slotted Screen and Risers
LOGGED BY: T. Plating CHECKED BY: K. Webb
a
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WELL
WW
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DESCRIPTION
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CONSTRUCTION
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5
Cement Grout
10
2" I.D. PVC Risers
i
Bentonite
15
Air hammer to 30' bgs, transition zone well, see well log
for AMW-2B for lithology description.
20
Sand Filter Pack
25
2" I.D. Slotted PVC
Screen
30
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
PhoTerra n864-679-3711
Fax: PAGE 1 OF 1

a
PROJECT: Asheville Steam Plant
PROJECT NO: 1026.02.23
DRILLING COMPANY: Geologic Exploration
DRILLING METHOD: DPT/Rock Core/Air Rotary/Air Hammer
BOREHOLE DIAMETER: 6"/10" IN
NOTES: Open borehole
U
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CD
WELL / BORING NO: AMW_2B
STARTED: 6/24/14 COMPLETED:
6/26/14
NORTHING: 642095.04
EASTING:
945124.96
ELEVATION 2104.09 ft MSL
M.P. ELEV:
2107.45 ft MSL
WATER: 89.50 ft TOC
TOTAL DEPTH:
94.0 ft BGS
LOGGED BY: T. Plating
CHECKED BY:
K. Webb
45
_''_
-'
O
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97
WELL
a n
CONSTRUCTION0a
SM SAND, silty, gravel present throughout, fill material,
brownish red with orange mottling, moist.
5 — —————————————————— — — — — ——
SAND, silty, gravel present throughout, sand and
SM gravel decreasing with depth, fill material, brownish red
with orange mottling, moist.
10
RK SAPROLITE, red/orange, completely weathered,
parent material.
15 — ------------------------
SAPROLITE, red/orange, completely weathered,
RK parent material, saturated at 18' bgs, gray below 18'
= bgs.
20 DPT Refusal at 20' bgs.
25
Air hammer to set surface casing, very weathered
RK oxidation apparent, light gray at 27' bgs, dark gray at
28' bgs.
30
70
35
40
_ -
_ -
T
_ _
RK
MGN: Mica -Gneiss, hard, fine grained, closely spaced
fractures, shallow dipping fractures, smooth and open
fractures, mica gneiss, pyrite with epidote present,
slight weathered fracture with very close joints at 36.5'
bgs, some pyrite present in fracture at 36.5' bgs, dry.
89
45
_''_
-'
RK
MGN: Mica -Gneiss, hard, fine grained, no notable
fractures or weathered zones, quartz veins, abundant
pyrite, dry.
97
6" I.D. PVC Surface
Casing, set at 34.' bgs.
Cement Grout
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
Phoe: 864-421-999
s mTerra Faxn864-679-3711 PAGE 1 OF 2

a
PROJECT: Asheville Steam Plant
PROJECT NO: 1026.02.23
DRILLING COMPANY: Geologic Exploration
DRILLING METHOD: DPT/Rock Core/Air Rotary/Air Hammer
BOREHOLE DIAMETER: 6"/10" IN
NOTES: Open borehole
U
d aU U
W <O U)DESCRIPTION
(D
WELL / BORING NO: AMW_2B
STARTED: 6/24/14 COMPLETED:
6/26/14
NORTHING: 642095.04
EASTING:
945124.96
ELEVATION 2104.09 ft MSL
M.P. ELEV:
2107.45 ft MSL
WATER: 89.50 ft TOC
TOTAL DEPTH:
94.0 ft BGS
LOGGED BY: T. Plating
CHECKED BY:
K. Webb
completely weathered, muscovite grains visible due to
0
z
preferential weathering, dry. Video logging confirmed
7)0,,i
weeping fractures at 54.8' and 57.8' bgs.
O
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WELL
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CONSTRUCTION
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RK_L----------------------
55
-
MGN: Mica -Gneiss, hard, fine grained, shallow dipping
-"
fractures, notable fracture at 53.5'-54' bgs, severely
RK
weathered zone with iron staining present, feldspar
_
completely weathered, muscovite grains visible due to
80
-
preferential weathering, dry. Video logging confirmed
-'
weeping fractures at 54.8' and 57.8' bgs.
60
`
65
70
75
85
90
95
100
6" Open Borehole
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
Phos)mTerra Fax: n864-679-3711 PAGE 2 OF 2
-
Air hammer to 94.55' bgs, cuttings similar to above
_
(MGN: Mica -Gneiss), dry. Video logging revealed
RK
weathered area, weeping at 82' bgs, and fracrured
_
zone, tight fractures shallow dipping and closely
80
:-
spaced with no apparent flow at 86'-88' bgs.
85
90
95
100
6" Open Borehole
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
Phos)mTerra Fax: n864-679-3711 PAGE 2 OF 2

PROJECT: Asheville Steam Plant
WELL / BORING NO: AMW-3A
PROJECT NO: 1026.02.23
STARTED: 7/7/14 COMPLETED: 7/7/14
DRILLING COMPANY: Geologic Exploration
NORTHING: 641987.41 EASTING: 948032.19
DRILLING METHOD: Mud Rotary
ELEVATION 2169.87 ft MSL M.P. ELEV: 2173.37 ft MSL
BOREHOLE DIAMETER: 5.875" IN
WATER: 9.20 ft TOC TOTAL DEPTH: 72.0 ft BGS
NOTES: 2" PVC Slotted Screen and Risers
LOGGED BY: K. Webb CHECKED BY: T. Plating
a
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WELL
wo
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DESCRIPTION
Q
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CONSTRUCTION
U
U
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5-
10-
101520
15-
20-
-
Cement Grout
25-
30—
2" I.D. PVC Risers
-2"
35
See lithology for well AMW-3B, rock ledges
encountered at 38', 41', and 45' bgs, hard rock
encountered at 72' bgs (4,000 lbs. of down pressure).
40-
04550Bentonite
45-
50—
Bentonite
55-
56065
60-
65—
—Sand Filter Pack
2" 1. D. Slotted PVC
Screen
70
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
s mTerra Faxn8864-679-3711 PAGE 1 OF 1

PROJECT: Asheville Steam Plant
WELL / BORING NO: AMW-3B
PROJECT NO: 1026.02.23
STARTED: 6/30/14 COMPLETED: 7/7/14
DRILLING COMPANY: Geologic Exploration
NORTHING: 641985.98 EASTING: 948035.66
DRILLING METHOD: DPT/HSA/Mud Rotary/Rock Core/Air Hammer
ELEVATION 2173.00 ft MSL M.P. ELEV: 2173.00 ft MSL
BOREHOLE DIAMETER: 6/12"/6/7.875" IN
WATER: 7.92 ft TOC TOTAL DEPTH: 98.0 ft BGS
NOTES: 2" PVC Slotted Screen and Risers
LOGGED BY: A. Yonkofski CHECKED BY: K. Webb
a
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WELL
WW
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DESCRIPTION
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CONSTRUCTION
U
U
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ML
SILT, ORGANIC, brown.
—
—————————————————— — — — — ——
.`.,
100
/4
ML
SILT, light tan with some orange mottling, moist
5
CL
CLAY, gray, saturated.
80
SW
SAND, gray, well graded, fine to coarse grained sand
SC
with some gravel and clay.
CL
CLAY, gray with orange mottling, grading into saprolite
10
44
at 12' bgs.
—
------------------------.`.,
50
15
6" I.D. PVC Surface
Casing, set to 80' bgs.
50
SAPROLITE, orange, grading downwards to brown with
20
-
orange and black mottling, relict structure readily
RK
apparent, more gray with depth, gray/brown to
brown/red foliation, cave in prevented further use of
Direct Push Technology, switched to Hollow Stem
60
Augers.
25
Cement Grout
60
30
35
SC
SAND, silty, clayey, brown/tan, some small gravel, fine
SM
grained sand, few fines, cohesive, low plasticity,
micaceous, wet.
40
2" 1. D. PVC Risers
_
RK
Weathered rock, no sample return.
Auger refusal.
45
MH
SILT, brown, trace amount of clay and fine grained
sand, micaceous, cohesive, high plasticity, moist/wet.
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
PhosynTerra n864-679-3711
Fax: PAGE 1 OF 2

a
PROJECT: Asheville Steam Plant
PROJECT NO: 1026.02.23
DRILLING COMPANY: Geologic Exploration
DRILLING METHOD: DPT/HSA/Mud Rotary/Rock Core/Air
BOREHOLE DIAMETER: 6/12"/6/7.875" IN
NOTES: 2" PVC Slotted Screen and Risers
U
aU
W <O U)DESCRIPTION
CD
61%1
WELL / BORING NO: AMW_3B
STARTED: 6/30/14 COMPLETED:
7/7/14
NORTHING: 641985.98
EASTING:
948035.66
ELEVATION 2173.00 ft MSL
M.P. ELEV:
2173.00 ft MSL
WATER: 7.92 ft TOC
TOTAL DEPTH:
98.0 ft BGS
LOGGED BY: A. Yonkofski
CHECKED BY:
K. Webb
a-
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WELL
Q
W
m �0
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CONSTRUCTION
U
Q�
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60 ] MH SILT, brown, trace amount of clay and fine grained
sand, micaceous, cohesive, high plasticity, moist/wet.
(continued)
65
2" I.D. PVC Risers
70
Weathered rock encountered at 74' bgs.
VA1.
80—Bedrock encountered at 78' bgs, roller cone refusal at
81.5' bgs.
RK ROCK, coarse grained quartz rich and coarse grained
mica rich rock, core consistent with garnet mica schist
maooed in the area and on the around surface.
85 � I , I— Bentonite
90 � Air rotary to final well depth of 98' bgs.
95
—Sand Filter Pack
2" I.D. Slotted PVC
Screen
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
PhoTerra Fax: n864-679-3711 PAGE 2 OF 2

PROJECT: Asheville Steam Plant
WELL / BORING NO: APZ-30
PROJECT NO: 1026.02.23
STARTED: 6/17/14 COMPLETED: 6/20/14
DRILLING COMPANY: Geologic Exploration
NORTHING: 642200.8 EASTING: 944983.63
DRILLING METHOD: DPT/Rock Core/Air Rotary/Air Hammer
ELEVATION 2100.31 ft MSL M.P. ELEV: 2103.50 ft MSL
BOREHOLE DIAMETER: 6'710" IN
WATER: (Dry) ft TOC TOTAL DEPTH: 218.0 ft BGS
NOTES: Open borehole
LOGGED BY: T. Plating CHECKED BY: K. Webb
a
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DESCRIPTION
a
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a
WELL
wo
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Q
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CONSTRUCTION
U
U
U
RK
SAPROLITE, red with orange mottling, highly
weathered.
6" I.D. PVC Surface
5
_
RK
___________ ____________
SAPROLITE, light gray, highly weathered micaceous
Casing, set at 20' bgs.
RK
zone, moist but not saturated throughout.
o _ _ _ _ _ /
_
SAPROLITE, light gray, highly weathered, less fine
(clay) material with depth, medium to coarse sand,
relict rock structure.
10
Cement Grout
DPT refusal at 8' bgs.
-
RK
MGN: Mica -Gneiss, light gray to gray, oxidation present
_
on fractured surface.
15
-
MGN: Mica -Gneiss, hard, gray, fine to medium grained,
closely spaced fracture, quartz, plagioclase, muscovite,
-
RK
pyrite mineralization, shallow dipping fractures along
73
20
-'
foliation, notable fresh fractures at approximately 15',
-"
16'2", and 16'8" bgs.
25
MGN: Mica -Gneiss, hard, fine to medium grained,
-X
closely spaced fractures, quartz, plagioclase,
RK
muscovite, mica gneiss / augen gneiss with pyrite
100
-
mineralization, shallow dipping fractures along foliation,
=
notable fresh fractures at approximately 23'8", 242",
30
and 25' bgs.
MGN: Mica -Gneiss, hard, fine to medium grained,
35
-
closely spaced fractures, quartz, plagioclase,
-
muscovite, mica gneiss / augen gneiss with pyrite
-
RK
mineralization and weathered garnet, shallow dipping
98
_
fractures along foliation, notable fresh to slightly
40
weathered fractures at approximately 33', 33'6", 37',
_
and 38'4" bgs.
45
-
MGN: Mica -Gneiss, hard, fine to medium grained,
closely spaced fractures, quartz, plagioclase,
-
RK
muscovite, mica gneiss / augen gneiss with pyrite
94
_
mineralization and weathered garnet, shallow dipping
50
fractures along foliation, no notable fractures.
"
55
MGN: Mica -Gneiss, gray, darkening with depth, fine to
- -
medium grained, closely spaced fractures, mica gneiss
-'
RK
/ augen gneiss with pyrite mineralization, shallow
96
-
dipping fractures along foliation, notable fracture zones
=
between 53'-54' and 55'-58' bgs, very slight weathering,
60
softest zone/quickest coring rate.
65
-
RK
MGN: Mica -Gneiss, gray, darkening with depth, dry
fractures at 87'-89' bgs.
70
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
Phos
n864-679-3711
mTerra Fax: PAGE 1 OF 3

a
PROJECT: Asheville Steam Plant
PROJECT NO: 1026.02.23
WELL / BORING NO: APZ-30
STARTED: 6/17/14
COMPLETED:
6/20/14
DRILLING COMPANY: Geologic Exploration
NORTHING: 642200.8
EASTING:
944983.63
DRILLING METHOD: DPT/Rock Core/Air Rotary/Air Hammer
ELEVATION 2100.31 ft MSL
M.P. ELEV:
2103.50 ft MSL
BOREHOLE DIAMETER: 6'710" IN
WATER: (Dry) ft TOC
TOTAL DEPTH:
218.0 ft BGS
NOTES: Open borehole
LOGGED BY: T. Plating
CHECKED BY:
K. Webb
a
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WELL
W
Q
DESCRIPTION
w --
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CONSTRUCTION
p
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W
M
80
85
90
95
MGN: Mica -Gneiss, gray, darkening with depth, dry
RK fractures at 87'-89' bgs. (continued)
100
105
110
115
6" Open Borehole
120
125
130 MGN: Mica -Gneiss, cuttings become dark gray at
RK 121.5' bgs, rough drilling at 128' bgs, cuttings appear to
have very slight weathering at 128' bgs.
135
140
145 MGN: Mica -Gneiss, rough drilling at 142' bgs, cuttings
RK very fine dust and show slight weathering at 149'-154'
bgs.
CLIENT: Duke Energy Progress
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Arden, NC
synTerra Faxn864-679-3711 PAGE 2 OF 3

PROJECT: Asheville Steam Plant
PROJECT NO: 1026.02.23
DRILLING COMPANY: Geologic Exploration
DRILLING METHOD: DPT/Rock Core/Air Rotary/Air Hammer
BOREHOLE DIAMETER: 6"/10" IN
NOTES: Open borehole
U
d aU U
W <O U)DESCRIPTION
0
WELL / BORING NO: APZ_30
STARTED: 6/17/14
COMPLETED:
6/20/14
NORTHING: 642200.8
EASTING:
944983.63
ELEVATION 2100.31 ft MSL
M.P. ELEV:
2103.50 ft MSL
WATER: (Dry) ft TOC
TOTAL DEPTH:
218.0 ft BGS
LOGGED BY: T. Plating
CHECKED BY:
K. Webb
-n
O
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7m(0
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WELL
w �-
m0
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CONSTRUCTION
U
MGN: Mica -Gneiss, rough drilling at 142' bgs, cuttings
RK very fine dust and show slight weathering at 149'-154'
155 bgs. (continued)
160
165
170
175
180
185-jj RK MGN: Mica -Gneiss, larger and darker cuttings at
169'-174' bgs, cuttings very slightly weathered at
174'-179' bgs.
190
195
a
200
F
ai
J
205
z
'a
c�
LU 210
J
J_
i
W
S
U)
�
215
W
0
0
CE
9 220
RK I MGN: Mica -Gneiss, dust return at 214' bgs.
z CLIENT: Duke Energy Progress
54
18 River Street, Suite 220 PROJECT LOCATION: Arden, NC
¢ s]mTerra Phone: [phone]
0 Fax: [phone] PAGE 3 OF 3