NC0003433_Table 12-3 Background Wells GW Results_20150902

TABLE 12-3
RISK SCREENING TABLE: BACKGROUND GROUNDWATER DATA
CAPE FEAR STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, MONCURE, NC
Analytical Parameter
Redox
As
PH
Water
Level
Temp
Spec
Cond
DO
ORP
Turbidity
Ferrous
Iron
Alkalinity
Aluminum
Antimony
Arsenic
Barium
Beryllium
gi-
carbonate
Alkalinity
Boron
Cadmium
Calcium
Carbonate
Alkalinity
Chloride
Chromium
Cr(III)/Cr(VI)
Cobalt
Copper
DIS
TOT
DIS
TO
DIS
TOT
DIS
TOT
DIS
TOT
DIS
TOT
DIS
TOT
TOT
DIS
TOT
DIS
TOT
DIS
TOT
Reporting Units
None
S.U.
ft
Deg C
u/cros
mg/I
mV
NTU
mg/I
mg/I
ug/I
ug/I
ug/I
ug/1
ug/I
ug/I
ug/I
ug/1
ug/I
ug/I
mg/1
ug/I
ug/I
ug/I
ug/I
mg/I
mg/l
mg/1
ug/I
ug/I
ug/I
ug/1
mg/I
mg/1
SSA NCAC 02L Standard
NE
6.5-8.5
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
NE
1*
NE
10
NE
700
NE
4*
NE
NE
700
NE
2
NE
NE
250
NE
10
NE
1*
NE
1
Sample ID
Sample
Collection Date
Field Parameters
Analytical Results
SURFICIAL
BGMW-04
03/04/2015
NM
5.9
14.49
14
189
1.33
70
8.11
NM
NA
NA
462
NA
<1
NA
<1
NA
31
NA
NA
NA
NA
<50
NA
<1
NA
NA
8.3
NA
<5
NA
NA
NA
0.007
BGMW-04
06/08/2015
NM
5.7
16.20
18
188
1
97
9.85
NM
31.9
NA
3970
NA
<1
NA
<1
NA
91
NA
<1
31.9
NA
482
NA
<1
11.1
<5
9.3
NA
<5
NA
<1
NA
<0.005
MW-15SU
05/29/2015
NM
4.6
10.47
24
2530
2.22
371
4.1
NM
11
NA
6850
NA
<1
NA
2.47
NA
29
NA
10
11
NA
<50
NA
1.21
147
<10
51
NA
3.39
NA
387
NA
0.0307
MW-15SL
05/29/2015
Anoxic
6.0
10.58
18
329
0.1
116
4.97
NM
47
58
76
<1
<1
2.37
2.4
76
76
<1
<1
47
<50
<50
<1
<1
10
<10
6.3
<1
<1
19.8
21.1
<0.001
<0.001
MW-15SL
06/30/2015
Anoxic
6.1
10.44
19
282
0.3
-61
5.26
4.5
58
71
161
<1
<1
1.77
1.91
67
69
<1
<1
58
<50
<50
<1
<1
7.21
<10
7.6
<1
<1
12
12.3
<0.001
<0.001
MW-16S1l,'l
05/20/2015
Anoxic
6.2
2.19
17
978
16.6
111
4.26
NM
84
<5
110
<1
<1
<1
<1
159
160
<1
<1
84
217
140
<1
<1
59.9
<10
210
<1
<1
5.31
3.52
<0.001
<0.001
MW-16S DUP
05/20/2015
Anoxic
6.2
2.19
17
978
16.6
111
4.26
NM
83
<5
64
<1
<1
<1
<1
156
162
<1
11
83
202
140
<1
<1
59.7
<10
200
<1
<1
5.19
3.9
<0.001
<0.001
BEDROCK
BGTMW-04
03/04/2015
NM
7.7
15A2
14
321
0.8
48
0.46
NM
NA
NA
11
NA
<1
NA
<1
NA
128
NA
NA
NA
NA
<50
NA
<1
NA
NA
17
NA
<5
NA
NA
NA
<0.005
BGTMW-04
06/08/2015
NM
8.1
16.63
20
310
2.3
-43
2.54
NM
122
NA
44
NA
<1
NA
3.05
NA
129
NA
<1
122
NA
<50
NA
<1
28.5
<5
16
NA
<5
NA
<1
NA
<0.005
MW-0911,2l
06/30/2015
Anoxic
5.7
14.20
21
1049
0.23
101
3.21
1.5
83
6
16
<1
<1
<1
<1
80
76
<1
<1
82
<50
<50
<1
<1
68.9
<10
240
<1
<1
4.56
6.7
<0.001
<0.001
MW-09BRIt,zi
05/30/2015
Mixed (anoxic)
7.7
17.46
19
706
0.12
-238
2.1
NM
160
82
138
<1
<1
<1
<1
416
420
<1
<1
160
<50
<50
<1
<1
60.3
<10
120
<1
<1
<1
<1
<0.001
<0.001
MW-15BR
06/01/2015
NM
8.2
10.87
21
410
1.52
-71
4.75
NM
150
51
7
<5
<1
6.44
6.76
424
429
<5
<1
150
<50
<50
<5
<1
34.4
<10
NA
<5
<1
<5
<1
<0.005
<0.001
MW-15BR
06/30/2015
Mixed (oxic-anoxic)
7.9
9.62
18
431
0.52
137
2.32
0
130
15
30
<1
<1
6.6
6.07
369
398
<1
<1
130
<50
<50
<1
<1
31.9
<10
13
<1
<1
<1
<1
<0.001
<0.001
MW-16BRl1'2l
05/20/2015
Mixed (anoxic)
7.7
53.91
16
589
0.17
-149
4.83
NM
180
6
118
<1
<1
2.59
2.5
352
360
<1
<1
170
51
51
<1
<1
41.1
<10
37
<1
<1
<1
<1
<0.001
0.0025
Detections/Samples
---
---
---
---
---
---
---
---
---
12/12
7/9
14/14
0/9
0/14
5/9
7/14
9/9
14/14
0/9
1/12
12/12
3/9
4/14
0/9
1/14
12/14
0/12
13/13
0/9
1/14
5/9
6/12
0/9
3/14
Average Background
Concentrations (Detections Only)
___
___
___
___
___
___
___
___
---
87.7
36
804
---
---
3.30
3.15
210
171
---
10
87
118
163
---
1.21
43.1
---
67
---
3.39
7.8
62
---
0.010
Maximum Concentration
---
---
---
---
---
---
---
---
---
180.0
82
6850
---
---
6.60
6.76
424
429
---
10
170
217
482
---
1.21
147.0
---
240
---
3.39
19.8
387
---
0.031
Number of Backgroundwater
Samples that are Greater Than
NCAC 2L
---
---
---
---
---
---
---
---
---
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
6
0
0
Notes:
0- Bold highlighted concentration indicates exceedance of the 15A NCAC 02L, Appendix
2, April 1, 2013.
ORP = Oxidation Reduction Potential mg/I = milligrams per liter
ug/I = microgram per liter
DIS = Dissolved mg-N/L = milligram nitrogen per liter
umhos/cm = micro mhos per centimeter
TOT = Total my = millivolts
Spec Cord = Specific Conductance
Temp = Temperature NE = Not established
NM = Not Measured
DO = Dissolved Oxygen NTU = nephelometric turbidity unit
ft = feet
Deg C = Degree Celsius S.U. = Standard Unit
--- = Not applicable
< = concentration not detected at or above the reporting limit.
NA = Not analyzed
* - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013.
Note 1: Hexavalent chromium concentration is less than EPA
screening value for tapwater (0.035 ug/L). See Table 10-3 (USEPA
Regional Screening Levels [RSLs] rev., June 26, 2015)
Note 2: Sampling for hexavalent chromium was conducted
independent of site assessment sampling.
Prepared by: BE MAH Checked by: VTV
P:\Duke Energy Progress.1026\503. Cape Fear Ash Basin GW Assessment\3.11 CSA Reporting\Tables\Table 12-3 Background Wells GW Results.xlsx page 1 of 2

TABLE 12-3
RISK SCREENING TABLE: BACKGROUND GROUNDWATER DATA
CAPE FEAR STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC, MONCURE, NC
Analytical Parameter
Iron
Lead
Magnesium
Manganese
Mercury
Methane
Molybdenum
Nickel
Nitrate
(as N)
Potassium
Selenium
Sodium
Strontium
Sulfate
Sulfide
Thallium
Total
Dissolved
Solids
Total
Organic
Carbon
Total
Suspended
Solids
Vanadium
Zinc
DIS
TOT
DIS
TOT
TOT
DIS
TOT
DIS
TOT
DIS
TOT
DIS
TOT
TOT
DIS
TOT
TOT
DIS
TOT
DIS
TOT
DIS
TOT
DIS
TOT
Reporting Units
ug/I
ug/I
ug/I
ug/I
mg/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
mg-N/L
mg/I
ug/I
ug/I
mg/I
mg/I
mg/I
mg/I
mg/I
ug/I
ug/I
mg/I
mg/I
mg/I
ug/I
ug/I
mg/I
mg/I
15A NCAC 02L Standard
NE
300
NE
15
NE
NE
So
NE
1
NE
NE
NE
NE
100
30
NE
NE
20
NE
NE
NE
250
NE
NE
0.2*
Soo
NE
NE
NE
0.3-
NE
1
Sample ID
Sample
Collection Date
Analytical Results
UPPER SURFICIAL
BGMW-04
03/04/2015
NA
360
NA
<1
NA
NA
11
NA
<0.05
NA
NA
NA
NA
<5
NA
NA
NA
<1
NA
NA
NA
25
NA
NA
<0.2
140
NA
NA
NA
NA
NA
<0.005
BGMW-04
06/08/2015
NA
3810
NA
1.22
7.11
NA
49
NA
<0.05
NA
NA
<1
NA
<5
3.5
0.339
NA
<1
18.1
NA
NA
26
NA
NA
<0.2
150
NA
<5
NA
NA
NA
0.007
MW-15SU
05/29/2015
NA
2490
NA
2.48
82.3
NA
33700
NA
<0.05
<10
NA
<1
NA
ISO
0.623
0.623
NA
1.45
293
NA
1.27
1600
<1
NA
0.218
NA
7.4
NA
NA
4.57
NA
0.288
MW-15SL
05/29/2015
45000
45500
<1
<1
3.62
4600
4560
<0.05
<0.05
11
<1
<1
1.53
1.69
0.018
1.57
<1
<1
15.6
0.132
0.133
80
<0.1
<0.2
<0.2
210
1.3
27
<0.3
<0.3
0.005
<0.005
MW-15SL
06/30/2015
37300
38400
<1
<1
2.88
3800
3860
<0.05
<0.05
<10
<1
<1
<1
<1
0.026
1.42
<1
<1
15.5
0.113
0.114
52
<0.1
<0.2
<0.2
190
1.2
30
<0.3
0.383
<0.005
<0.005
MW-16SI','l
05/20/2015
35
93
<1
<1
26
319
202
<0.05
<0.05
<10
<1
<1
5.14
3.14
0.018
0.992
<1
<1
83.1
0.428
0.624
44
<0.1
<0.2
<0.2
630
0.706
<5
0.954
1.1
0.005
<0.005
MW-16S DUP
05/20/2015
33
72
<1
11
26
305
207
<0.05
<0.05
110
<1
<1
4.59
2.95
1 0.015
0.943
<1
<1
82.2
0.41
0.627
44
10.1
<0.2
<0.2
620
0.747
<5
0.827
1.05
<0.005
<0.005
BEDROCK
BGTMW-04
03/04/2015
NA
111
NA
<1
NA
NA
172
NA
<0.05
NA
NA
NA
NA
<5
NA
NA
NA
<1
NA
NA
NA
5.7
NA
NA
<0.2
180
NA
NA
NA
NA
NA
<0.005
BGTMW-04
06/08/2015
NA
57
NA
<1
8.14
NA
59
NA
<0.05
NA
NA
4.22
NA
<5
0.05
2.28
NA
<1
22.1
NA
NA
8.1
NA
NA
<0.2
180
NA
<5
NA
NA
NA
<0.005
MW-0911'2l
06/30/2015
1130
1800
<1
<1
30.3
792
826
<0.05
<0.05
25
<1
<1
2.21
1.8
<0.01
0.962
<1
<1
61.4
0.506
0.538
41
<0.1
<0.2
<0.2
660
1.3
<5
<0.3
<0.3
0.01
0.01
MW-09BRIt,2i
05/30/2015
268
441
<1
<1
24.1
805
829
<0.05
<0.05
<10
<1
<1
<1
<1
<0.01
2.1
<1
<1
37.2
0.68
0,677
7.9
<0.1
<0.2
<0.2
410
0.517
5
<0.3
<0.3
0.017
<0.005
MW-15BR
06/01/2015
<10
<10
<5
<1
8.49
72
72
<0.05
<0.05
14
16.9
17
<5
<1
NA
1.48
<5
2.02
36.7
0.498
0.501
NA
<0.1
<1
<0.2
NA
NA
NA
1.81
1.73
<0.005
<0.005
MW-15BR
06/30/2015
15
31
<1
<1
8.24
65
69
<0.05
<0.05
<10
11.8
11.5
<1
<1
2.7
1.69
1.95
1.98
42.9
0.469
0.493
37
<0.1
<0.2
<0.2
260
0.371
<5
2
1.82
<0.005
<0.005
MW-1680,2I
05/20/2015
187
329
<1
<1
13.9
332
326
<0.05
<0.05
11
2.89
2.97
<1
<1
<0.01
2.49
<1
<1
57.3
0.494
0.505
41
<0.1
<0.2
<0.2
340
0.892
<5
<0.3
<0.3
<0.005
<0.005
Detections/Samples
8/9
13/14
0/9
2/14
12/12
9/9
14/14
0/9
0/14
4/10
3/10
4/12
4/9
5/14
8/11
12/12
1/9
3/14
12/12
9/9
10/10
13/13
0/10
0/9
1/14
12/12
9/9
3/10
4/10
6/10
4/9
3/14
Average Background
Concentrations (Detections Only)
9330
6678
---
1.85
18.5
1109
2996
---
---
12
10.5
8.9
3.36
31.9
0.87
1.41
1.95
1.82
63.8
0.418
0.548
154.7
---
---
0.218
330
1.60
15.5
1.40
1.78
0.009
0.102
Maximum Concentration
45000
45500
---
2.48
82.3
4600
33700
---
---
25
16.9
17.0
5.14
ISO
3.50
2.49
1.95
2.02
293.0
0.680
1.27
1600
---
---
0.218
660
7.40
30.0
2.00
4.57
0.017
0.288
Number of Backgroundwater
Samples that are Greater Than
NCAC 2L
0
8
0
0
0
0
12
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
1
3
0
0
0
6
0
0
Notes:
0 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L, Appendix 2, April 1, 2013
ORP = Oxidation Reduction Potential
mg/I = milligrams per liter
ug/I = microgram per liter
DIS = Dissolved
mg-N/L = milligram nitrogen per liter
umhos/cm = micro mhos per centimeter
TOT = Total
my = millivolts
Spec Cord = Specific Conductance
Temp = Temperature
NE = Not established
NM = Not Measured
DO = Dissolved Oxygen
NTU = nephelometric turbidity unit
ft = feet
Deg C = Degree Celsius
S.U. = Standard Unit
--- = Not applicable
< = concentration not detected at or above
the reporting limit.
NA = Not analyzed
* - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013.
Note 1: Hexavalent Chromium concentration is less than EPA screening
value for tapwater (0.035 ug/L). See Table 10-3 (USEPA Regional
Screening Levels [RSLs] rev., June 26, 2015)
Note 2: Sampling for hexavalent chromium was conducted independent
of site assessment sampling.
Prepared by: BE MAH Checked by: VTV
P:\Duke Energy Progress.1026\503. Cape Fear Ash Basin GW Assessment\3.11 CSA Reporting\Tables\Table 12-3 Background Wells GW Results.xlsx page 2 of 2