Updated Soil BTV Tech Memo, Belews Creek

TECHNICAL MEMORANDUM
Date: August 30, 2017 File: 1026.20.09G
To: Melonie Martin (Duke Energy)
Cc: Kathy Webb (SynTerra)
From: Craig Eady (SynTerra)c 1>-T--
Subject: Updated Background Threshold Values for Soil
Belews Creek Steam Station — Belews Creek, NC
An updated background soil dataset for the Belews Creek Steam Station (Belews Creek) and a
revised version of the Statistical Methods for Developing Reference Background Concentrations for
Groundwater and Soil at Coal Ash Facilities (statistical methods document) (HDR Engineering, Inc.
and SynTerra Corporation, May 2017) were provided to the North Carolina Department of
Environmental Quality (NCDEQ) on May 26, 2017. On July 7, 2017, NCDEQ issued a response
letter (Zimmerman to Draovitch, July 7, 2017) identifying soil and groundwater data for each
coal ash facility appropriate for use in statistical determination of background threshold values
(BTVs) for both media and required that Duke Energy provide these values within 30 days from
receipt of the letter for facilities submitting Comprehensive Site Assessments (CSAs) by October
31, 2017, and 60 days from receipt of the letter for remaining facilities. BTVs (reported as
provisional) along with the revised background soil dataset for the Belews Creek were
submitted to NCDEQ on August 4, 2017.
The revised background soil dataset used for determination of BTVs and submitted to NCDEQ
on August 4, 2017 met the minimum requirement of 10 valid samples for all constituents except
for antimony, selenium, and thallium because detection limits reported for these constituents
were greater than the North Carolina IHSB PSRG Protection of Groundwater (POG). To
address these requirements, additional soil samples were collected from background locations
on July 26, 2017 (Figure 1). Boring logs associated with additional soil samples were provided
in the August 4, 2017 submittal but are also included herein for ease of use (Attachment 1). An
up-to-date spreadsheet of background soil data that includes analytical results from the recent
newly acquired additional assessment samples are provided in Table 1. The updated
background dataset satisfies the minimum requirement of 10 valid samples. In addition,
detection limits less than the PSRG POG for antimony, selenium, and thallium were achieved
during laboratory analysis. The updated background dataset was screened for outliers prior to
statistical determinations. Updated BTVs were calculated for all constituents using formal UTL
statistics and are provided in Table 2.
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MEMO \Belews Creek \ Soil \ Updated Soil BTV Tech Memo, Belews Creek.docx

Updated Background Threshold Values for Soil
August 30, 2017
Belews Creek Steam Station Page 2 of 3
LIST OF FIGURES
Figure 1 Background Soil Sample Locations - Belews Creek Steam Station
LIST OF TABLES
Table 1 Unsaturated Background Soil Data Summary - Belews Creek Steam Station
Table 2 Background Threshold Values for Soil - Belews Creek Steam Station
LIST OF ATTACHMENTS
Attachment 1 Soil Boring Logs (Additional Samples)
P: \ Duke Energy Carolinas \ Statistics_CAMA \ Background Determinations for NCDEQ July 7 2017 \BTV TECH
MEMO \Belews Creek \ Soil \ Updated Soil BTV Tech Memo, Belews Creek.docx

Updated Background Threshold Values for Soil
August 30, 2017
Belews Creek Steam Station
FIGURE
P: \ Duke Energy Carolinas \ Statistics_CAMA \ Background Determinations for NCDEQ July 7 2017 \BTV TECH
MEMO \Belews Creek \ Soil \ Updated Soil BTV Tech Memo, Belews Creek.docx

Updated Background Threshold Values for Soil
August 30, 2017
Belews Creek Steam Station
TABLES
P: \ Duke Energy Carolinas \ Statistics_CAMA \ Background Determinations for NCDEQ July 7 2017 \BTV TECH
MEMO \Belews Creek \ Soil \ Updated Soil BTV Tech Memo, Belews Creek.docx

TABLE 1
UNSATURATED BACKGROUND SOIL DATA SUMMARY
BELEWS CREEK STEAM STATION
DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC
Analytical Parameter
PH
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Chloride
Chromium
Cobalt
Copper
Iron
Lead
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Nitratt) (as
Potassium
Selenium
Sodium
Strontium
Sulfate
Thallium
Vanadium
Zinc
Reporting Units
S.U.
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
PSRG Protection of Groundwater
NE
NE
0.9
5.8
580
63
45
3
NE
NE
360,000
0.9
700
ISO
270
NE
65
1
NE
130
NE
NE
2.1
NE
NE
NE
0.28
6
1200
Sample ID
Sample Collection
Date
Analytical Results
BG-1D (1-2)
3/26/2015
4.8 j
17400
---
' '- S
41.5
<15.5
0.89
<0.37-
131 j
<305-
28.7
1.7 j
11.9
38100
21.1
249
57.6
0.046
<3.1
1.3 j
F3&Sj
348
---
<311
1.9 j
<-305
---
54.9
13.2
BG-1D (11)
3/27/2015
5.7 j
5490
---
10.9
26.8
12.2 j
0.68
<0:47-
<195
<396
4.7
28.6 j-
4.5
12200
%7.3j-
677
1010
0.0063 j
8.9
12
<39.6j
540
---
<390
<3.9
<396
---
14.2
28.1
BG-ID (21)
3/27/2015
S.4j
6210 j+
---
7.5
50
13.2j
0.88
cOA?
<197
<400-
2.3
6.8
3.5
12400 j+
25.9
836
257 j+
<0.01
<3.9
2.1
<40j
567
2.2j
<393
<3.9
<400-
---
16
31.6
BG-1D (31)
3/27/2015
5.6j
12700
---
- 7
42.3
38.6
2.8
<0,42-
<174
<358-
17.1
37.9
9.8
40400
17.1
3300
871
<0.01
<3.5
c35:8-1
876
2.9j
<347
<3.5
<358-
---
50.9
BG-2D (1-2)
3/23/2015
5.5 j
13800
---
3.3 j
25.1
<18.9
0.32 j
<0:45-
428
<363
8.5
---
7.6
24100
18.7
678
53.1
0.064
<3.8
<1.9
<36.3j
199 j
---
<378
<3.8
<363-
---
46.6
10.5
BG-2D (10-12)
3/24/2015
5j
9670
---
2.7j
70.7
34..5j
0.86
<0-.42-
<173j
<-332-
5.3
5.5
8.1
32300
21.7
1060
245
0.015
<3.5j
<1.7
E3-5.2j
183j
3j
<346
<3.5j
-352-
---
105
14.2
BG-2D (20-22)
3/24/2015
5.1j
6680
---
<3.7
88.9
<18.5
0.29j
a0.45-
<185j
<367-
<1.9j
5
4.8
9570
11.3
1090
450
<0.01
<3.7j
<1.9
<36.7-1
949
---
<371
<3.7j
<367-
---
20
39.1
BG-2D (30-32)
3/24/2015
5.2j
7530
---
<4
91.9
<20.1
0.33j
<0-:48-
<201j
<-403-
<2j
5
1.8j
13000
6.6
1500
680
<0.01
<4j
<2
<40:3-j
1240
---
<402
<41
E403
---
27
20.1
BG-3S (1-2)
5/12/2015
5.4 j
14800
---
---
29.9
14 j
0.37
<-0.77-
158 j
<329-
15.9
---
12.9
27800
26.6
238
39.6
0.031
<3.2
4.1
<3-2.9j
343
---
<320
<3.2
<329
---
60
8.4
BG-3S (10-12)
5/12/2015
4.91
10000
---
---
32.3
20.9
0.75
<-0:31-
<189
<362-
21.5
15.6
14.3
44200
6.2 j
647
513
0.0095 j
<3.8
4.5
<363-j
<379
---
<379
<3.8
<-362-
---
141
21.2
BG-3S (20-22)
5/12/2015
5 j
9280
---
---
68.4
16.6
0.76
<B.73-
<152
<308-
15.4
8.1
28.5
36800
14.4
2620
216
<0.0097
<3
9.8
<30.8-j
2360
---
<304
<3
e308-
---
55.3
48.5
GWA-3D (34-35.5)
5/4/2015
7610
---
---
108
<19.3
0.97
<0:93-
-1050
<366-
1.1j
---
2
9110
6.4j
2080
460
<0.012
<3.9j
1.1j
-36.6j
1440
---
<386j
-13..4
<-386-
---
18.4
29.6
GWA 4S(45-47)
3/5/2015
4830
---
<2.8
79.5
5
0.52
599
<284
1j+
2.2j
2.8
7760
15.6
1320
383
<0.01
<0.56
1.1
F28.4j
1060
---
49.2j
4.3
<-284
---
9.4
20.3
GWA-12D (10-12)
4/15/2015
5.6 j
4320
---
---
26.6
<15.4
0.31
1 0.74
<154 j
<-315
<1.5 j
6.5
0.96 j
13.2
287
296
<0.0097 j
<3.1
<1.5 j
-31.5j
313
---
<308 j
<3.1 j
<3-15
---
---
8.5
GWA-12D (15-17)
4/15/2015
5.4 j
14300
---
<5.6
98.6
<13.9
0.39
<-0.67-
<139 j
<-281-
<1.4 j
2.9 j
1.8
7740
19.9
187
<0.0092 j
<2.8
<1.4 j
<28.1j
4230
---
<279 j
<2 88 j
<-28-1
---
<5.6
GWA-12D (20-22)
4/15/2015
5.3 j
11900
---
---
90.7
<14.5
0.43
<0:64
<145 j
<-265-
0.97 j
3.5 j
9.1
7870
14.7
3230
135
<0.009 j
<2.9
0.79 j
<-28 5j
2830
---
<289 j
<2.9 j
<285
---
8.2
43.6
GWA-12D (25-27)
4/15/2015
---
12200
---
---
82.5
<19.6
0.59
<0..94-
<196 j
<-402-
4.7
4.5 j
11.3
9790
12.8
3070
247
<0.013 j
<3.9
1.1 j
<40-.2-j
3310
---
<393 j
<3.9 j
<402-
---
10.6
43.6
BGSB-01(1-2)
07/26/2017
4.8
33000
<0.46
59-B
38
1.6
<8.1
<0.023
170j
3.4j
37
3.5
20
49000
29
610j
66 B
0.061j
0.98j
7.8
0.3
750
1.5
37j
2.5j
<12
0.38
64
19
BGSB-01(5-7)
07/26/2017
4.6
17000
<0.47
22-B
18
1.6
<2.4
<0.023
58j
1.9j
19
1.1
15
21000
44
490
39 B
<0.092
<1.9
6.4
0.089j
650
0.84j
32j
0.82j
<12
0.15
42
15
BGSB-01(10-12)
07/26/2017
4.7
15000
<0.6
9.1 B
47
1.4
<1.6
<0.03
27j
1.2j
6.9
5.8
5.2
12000
33
590
180 B
<0.091
0.56j
3.8
0.1j
620
1j
<160
0.76
<12
0.39
13
23
BGSB-01 (15-17)
07/26/2017
5.0
13000
<0.4
5.6 B
46
1.3
<3.8
<0.02
54j
<12
6.7
16
3.2
8700
30
610
230 B
<0.091
<3
3.7
0.074j
870
1.9
<380
1.9
<12
0.66
9.8
26
BGSB-01 (20-22)
07/26/2017
4.8
24000
<0.52
6.3 B
62
1.3
1.2 j
<0.026
<280
<11
5
21
5.2
11000
22
900
250
<0.09 M
0.97 j
6.2
<0.23
1900
1.5
<280
2.8
<11 M
0.6
8.6
44
BGSB-02 (1-2)
07/26/2017
4.9
16000
<0.37
3.9 B
14
0.28
<2.8
<0.019
380
4.2j
10
1.8
8.8
22000
14
540
59 B
<0.1
<2.2
2j
0.32
280
0.71j
<280
1.5
8j
0.14
65
13
BGSB-02 (10-12)
07/26/2017
4.6
1 13000
<0.51
1 0.5 j,B
27
0.27
<10
<0.026
<-10B0
<12
1.1j
1 4.8
3.6
11000
12
880j
110 B
<0.092
<8.1
<8.1
<0.23
440j
1.8
<-1-000
<4
<12
0.066j
35
8.1j
BGSB-02 (15-17)
07/26/2017
5.0
12000
<0.45
0.54 B
42
0.37
<17
0.025
260j
<11
2.6j
7.2
10
12000
22
1000j
490
<0.087
<13
<13
<0.23
730j
2.7
280j
<6.7
<11
0.19
24
23
BGSB-02 (20-22)
07/26/2017
5.0
21000
<0.57
1.2 B
70
0.51
<22
<0.029
450j
<12
7.8
7.2
19
17000
20
1400j
480
<0.097
<18
<18
0.076j
710j
4.5
360j
<9
<12
0.26
35
22
BGSB-02 (25-27)
07/26/2017
5.0
30000
<0.38
0.85 B
140
0.57
<23
<0.019
300j
<12
1.2j
6.2
9.2
14000
7.2
1400j
490
<0.089
<-19
<19
0.073j
990j
4.1
340j
<9.3
<12
0.27
18
20j
BGSB-02 (30-32)
07/26/2017
5.3
17000
<0.38
0.77 B
71
0.47
<8.8
0.033
200j
<12
3.6
17
4.8
14000
17
1700j
550 B
<0.1
<7.1
<7.1
0.08j
880
2.2
<880
<7.1
<12
0.34
23
15
BGSB-03 (1-2)
07/26/2017
5.0
17000
<0.41
3.2 B
22
0.39
<3.7
0.032
230
<11
20
1.4
9.5
22000
11
350
42 B
<0.09
0.51
2.5 j
0.084 j
440
0.56 j
<190
1.7
<11
0.1 j
37
14
BGSB-03 (5-7)
07/26/2017
5.0
17000
<0.3
2.8 B
38
0.56
<2.3
<0.015
47j
1.8j
5.1
6.7
9.9
9800
29
530
170 B
<0.082
0.81j
5.8
0.09j
840
0.96
<230
0.33j
<11
0.27
28
24
BGSB-03 (10-12)
07/26/2017
5.2
23000
<0.39
2.2 B
64
0.66
<13
<0.02
<1300
<12
27
31
13
25000
12
2100
540 B
<0.1
<10
6.1j
0.079j
1500
2.8
<1300
<5
<12
0.32
95
27
BGSB-03 (15-17)
07/26/2017
4.9
15000
<0.43
3.6 B
82
1.1
<12
0.032
<1200
<14
4.4
32
15
18000
13
2100
470 B
<0.1
<9.8
4.5j
<0.27
1200
5
<1200
<4.9
<14
0.65
99
21
BGSB-03 (20-22)
07/26/2017
4.9
19000 M
0.14j
4.9 B
53
5.9
<10 M
0.013j
H-000-M
<14
43 M
22
23 M
51000 M
9.8
1100
630 B,M
<0.11
<8.2 M
5.1j
0.083j
590j
2.5
<1000
<4.1
<14
0.2
280
34 M
GWASB-12 (5-7)
07/26/2017
4.4
11000
<0.42 M
6.7 B
16
0.36
<2.1
<0.021
110 j
2.2 j
9.4
1
9.6
11000
15
320
43 B
<0.096
1.2 j
1.5 j
0.11 j,M
360
1.1
<210
1
<13 M
0.14
20 M
13
GWASB-12 (10-12)
07/26/2017
4.6
8500
0.09 j
3.2 B
20
0.42
<2.9
<0.019
200 j
7 j
6.8
2
8.4
7100
16
360
130 B
<0.096
1.1 j
1.2 j
2:6P1
410
1.7
<290
1.6
8.7 j,M
0.099 j
12
12
GWASB-12(15-17)
07/26/2017
5.0
14000
<0.31
3.2 B
51
0.53
<9.2
<0.015
<920
<12
3.1
7
4.4
7200
14
440j
200 B
<0.089
<7.4
<7.4
0.072j
470j
2.8
<920
<3.7
<12
0.22
12
14
GWASB-12 (20-22)
07/26/2017
5.1
14000
<0.36
2 B
30
0.48
<42
0.016j
570j
1.2j
6.6j
2.7
8.1j
9900
21
1500j
380
<0.098
-E-34
<34
0.078j
12001
7.7
630j
e17
<12
0.17
8.4
161
GWASB-12 (25-27)
07/26/2017
5.5
14000
<0.32
1.2 B
46
0.59
<23
<0.016
290 j
<12
5.9
6.1
5.8
9500
12
810 j
230 B
<0.099
<9.1
<9.1
0.079 j
650 j
5.1
«1+ 0
<9.1
<12
0.18
9.9
13
Prepared by: JHG Checked by: BDR
Notes:
S4 - Indicates values omitted from dataset.
--- - Not applicable; non -detect concentration greater than PSRG Protection of Groundwater; value omitted
- Indicates data removed /identified as an outlier
< - Results not detected at concentrations which equal the laboratory's method reporting limit.
B - Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than IOX the concentration in the method blank.
j - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
j- - Estimated concentration, biased low.
j+ - Estimated concentration, biased high.
M - Matrix spike / matrix spike duplicate failure.
mg/kg - milligrams per kilogram
NE - Not established
PSRG Protection of Groundwater - NCDEQ IHSB Preliminary Soil Remediation Goals Table - October 2016
S.U. - Standard Units
P:\Duke Energy Carol inas\Statistics_CAMA\Background Determinations for NCDEQ July 7 2017\BTV TECH MEMO\Belews Creek\Soil\Tables\Copy of TABLE 1 - Belews Creek - Background Soil Data -Updated Page 1 of 1

TABLE 2
BACKGROUND THRESHOLD VALUES FOR SOIL
BELEWS CREEK STEAM STATION
DUKE ENERGY COROLINAS_ LLC_ RFLFW5 CREEK_ NC
Parameter
Reporting Unit
PSRG Protection of
Groundwater
BTV
pH*
S.U.
NE
4.3 - 5.8
Aluminum
mg/kg
NE
31253
Antimony
mg/kg
0.9
0.6
Arsenic
mg/kg
5.8
12.6
Barium
mg/kg
580
139
Beryllium
mg/kg
63
19.3
Boron
mg/kg
45
17
Cadmium
mg/kg
3
0.032
Calcium
mg/kg
NE
450
Chloride
mg/kg
NE
14
Chromium
mg/kg
360,000
41.1
Cobalt
mg/kg
0.9
51
Copper
mg/kg
700
28.4
Iron
mg/kg
150
40400
Lead
mg/kg
270
39.7
Magnesium
mg/kg
NE
3600
Manganese
mg/kg
65
1117
Mercury
mg/kg
1
0.1
Molybdenum
mg/kg
NE
9.8
Nickel
mg/kg
130
11.6
Nitrate (as N)
mg/kg
NE
0.3
Potassium
mg/kg
NE
2114
Selenium
mg/kg
2.1
5.44
Sodium
mg/kg
NE
393
Strontium
mg/kg
NE
9
Sulfate
mg/kg
NE
12
Thallium
mg/kg
0.28
0.852
Vanadium
mg/kg
6
127
Zinc
mg/kg
1200
51.8
Prepared by: JHG Checked by: MCM
Notes:
* - Upper and lower threshold values calculated for parameter
mg/kg - milligrams per kilogram
NE - Not Established
S.U. - Standard Unit
P:\Duke Energy Carolinas\Statistics_CAMA\Background Determinations for NCDEQ July 7 2017\BTV TECH MEMO\Belews
Creek\Soil\Tables\Copy of TABLE 2 - Belews Creek Soil BTVs_Updated Page 1 of 1

Updated Background Threshold Values for Soil
August 30, 2017
Belews Creek Steam Station
ATTACHMENT 1
SOIL BORING LOGS (ADDITIONAL SAMPLES
P: \ Duke Energy Carolinas \ Statistics_CAMA \ Background Determinations for NCDEQ July 7 2017 \ BTV TECH
MEMO \Belews Creek \ Soil \ Updated Soil BTV Tech Memo, Belews Creek.docx

PROJECT: Belews Creek
WELL / BORING NO: BGSBA
PROJECT NO: 1026.20
STARTED: 7/26/17 COMPLETED: 7/26/17
DRILLING COMPANY: Geologic Exploration
NORTHING: 929482.39 EASTING: 1686159.06
DRILLING METHOD: GeoProbe
G.S. ELEV: ft M.P. ELEV: NA ft
BOREHOLE DIAMETER: 3 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 22.0 ft BGS
NOTES:
LOGGED BY: A. Albert CHECKED BY: A. Lefitz
w
O
U
_
Q O
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DESCRIPTION
w
CL
2
<
O^
0 o
uj
U)
0 z
OJ D
m0
0 E
d Q
WELL
CONSTRUCTION
CL
Stiff, dark red orange silty clay, non -cohesive,
non -plastic.
5
CL
Stiff, dark red orange silty clay mottled with white tan
fine grained sand and some organic matter.
Non -cohesive, non -plastic.
10
SC
SM
Mostly fine-grained sand with red orange silty clay.
15
SC
SM
Mostly fine-grained sand with red orange silty clay and
intervals of white quartz partially weathered rock.
20 J.
ML
Dark brown red sandy silt grading to gray as depth
increases, bottom foot is partially weathered rock.
Geo robe refusal at 22 feet below ground surface.
25
30
35
40
45
Coordinates obtained with hand held GPS unit.
CLIENT: Duke Energy Carolinas, LLC
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Belews Creek, NC
���ra Greenville, South Carolina 29601
s)mPhone:864-421-9999 PAGE 1 OF 1

PROJECT: Belews Creek
WELL / BORING NO: BGSB-2
PROJECT NO: 1026.20
STARTED: 7/26/17 COMPLETED: 7/26/17
DRILLING COMPANY: Geologic Exploration
NORTHING: 929513.97 EASTING: 1687460.87
DRILLING METHOD: GeoProbe
G.S. ELEV: ft M.P. ELEV: NA ft
BOREHOLE DIAMETER: 3 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 35.0 ft BGS
NOTES:
LOGGED BY: A. Albert CHECKED BY: A. Lefitz
w
O
U
_
Q O
��
�
DESCRIPTION
w
CL
2
<
O^
0 o
Uj
U)
0 z
OJ D
m0
0 E
d Q
WELL
CONSTRUCTION
CL
ML
Stiff, red orange, silty clay with fill gravel at top of run.
Non -cohesive, non -plastic.
5
CL
ML
Stiff, red orange, silty clay with fill gravel at top of run
and more sandy layers than above. Clay sand mottling
fine grained sand and some organic matter.
Non -cohesive, non -plastic.
10
SM
Silty, fine-grained sand mottling large sandy interval in
bottom 1.5 feet. Uncosolidated, non -plastic.
15
SM
Silty, fine-grained sand mottling. Uncosolidated,
non -plastic.
20
Silty, fine-grained sand mottling, more fine-grained
SM
sandy layers than above. White, fine sand layer and
sandy bottom of run beginning at 23.6 feet below
ground surface. Uncosolidated, non -plastic.
25
SM
Silty, fine-grained sand mottling, more fine-grained
sandy layers than above and some quartz partially
weathered rock fragments. Uncosolidated, non -plastic.
30
Silty, fine-grained sand mottling, more fine-grained
SM
sandy layers than above and some quartz partially
weathered rock fragments. Dark gray partially
weathered rock at 33.2 feet below ground surface.
Non -cohesive, non -plastic.
35
40
45
Coordinates obtained with hand held GPS unit.
CLIENT: Duke Energy Carolinas, LLC
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Belews Creek, NC
���ra Greenville, South Carolina 29601
s)mPhone:864-421-9999 PAGE 1 OF 1

PROJECT: Belews Creek
WELL / BORING NO: BGSB-3
PROJECT NO: 1026.20
STARTED: 7/26/17 COMPLETED: 7/26/17
DRILLING COMPANY: Geologic Exploration
NORTHING: 922165.53 EASTING: 1680651.34
DRILLING METHOD: GeoProbe
G.S. ELEV: ft M.P. ELEV: NAft
BOREHOLE DIAMETER: 3 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 25.0 ft BGS
NOTES:
LOGGED BY: A. Albert CHECKED BY: A. Lefitz
w
O
U
_
Q O
eJ
�
DESCRIPTION
w
CL
2
<
O^
0 o
Uv
U)
0 z
OJ D
coo
0 E
d Q
WELL
CONSTRUCTION
CL
Stiff, red orange silty clay with organics, non -cohesive,
non -plastic.
5
CL
Stiff, dark red silty clay mottled with white tan fine sand
and some dark brown organic matter. Non -cohesive,
non -plastic.
10
CL
Stiff, dark red silty clay mottled with white tan fine sand
and less dark brown organic matter than above. Slightly
moist, non -cohesive, non -plastic.
15
SC
Fine sand mottled with orange to light red silty clay with
organic lenses.
20
SC
Fine sand mottled with orange to light red silty clay with
organic lenses and some layers of coarse sand with
quartz and mica grains.
25
30
35
40
45
Coordinates obtained with hand held GPS unit.
CLIENT: Duke Energy Carolinas, LLC
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Belews Creek, NC
���ra Greenville, South Carolina 29601
s)mPhone:864-421-9999 PAGE 1 OF 1

PROJECT: Belews Creek
WELL / BORING NO: GWASB-12
PROJECT NO: 1026.20
STARTED: 7/26/17 COMPLETED: 7/26/17
DRILLING COMPANY: Geologic Exploration
NORTHING: 922340.48 EASTING: 1683347.65
DRILLING METHOD: GeoProbe
G.S. ELEV: ft M.P. ELEV: NA ft
BOREHOLE DIAMETER: 3 IN
DEPTH TO WATER: ft TOC TOTAL DEPTH: 30.0 ft BGS
NOTES:
LOGGED BY: A. Albert CHECKED BY: A. Lefitz
w
O
U
_
Q O
��
�
DESCRIPTION
w
CL
2
<
O^
0 o
uj
U)
0 z
OJ D
m0
0 E
d Q
WELL
CONSTRUCTION
CL
Stiff, dark brown organic matter and light brown silty
sandy clay, slightly cohesive.
5
CL
Stiff, dark red brown organic matter, silty clay
transitioning to light tan, fine sand, mottling sand and
clay.
10
SC
Fine sand mottled with red orange clay and dark brown
organic matter, unconsolidated material with little
cohesion.
15
SC
Fine sand mottled with red orange clay and dark brown
organic matter, unconsolidated material with little
cohesion.
20
Increase in white tan fine sand. Bottom foot dark brown
SM
sandy silt with layer of coarse -grained sand. Mica,
quartz ends with orange silty clay, slight consolidation.
Thick layers of white, fine sand towards bottom foot of
run with quartz and mica grains.
25
Increase in white tan fine sand. Bottom foot dark brown
SM
sandy silt with layer of coarse -grained sand. Mica,
quartz ends with orange silty clay, slight consolidation.
Thick layers of white, fine sand towards bottom foot of
run with quartz and mica grains.
30
35
40
45
Coordinates obtained with hand held GPS unit.
CLIENT: Duke Energy Carolinas, LLC
SynTerra
148 River Street, Suite 220 PROJECT LOCATION: Belews Creek, NC
���ra Greenville, South Carolina 29601
s)mPhone:864-421-9999 PAGE 1 OF 1